/* roulang page: index */
/* ===== design tokens ===== */
:root {
  --bg: #070B14;
  --bg-deep: #050810;
  --panel: #0C1428;
  --panel-light: #101A32;
  --primary: #0B6FF0;
  --primary-bright: #2F7DFF;
  --accent: #25D1DA;
  --accent-soft: rgba(37, 209, 218, 0.12);
  --blue-light: #35C9FF;
  --amber: #FFB547;
  --border: rgba(255, 255, 255, 0.14);
  --border-soft: rgba(255, 255, 255, 0.08);
  --glass: rgba(255, 255, 255, 0.05);
  --glass-strong: rgba(255, 255, 255, 0.08);
  --highlight-border: rgba(37, 209, 218, 0.35);
  --text-main: #FFFFFF;
  --text-body: #CDD9E8;
  --text-muted: #8A97AC;
  --text-faint: #56637A;
  --r-small: 8px;
  --r-card: 14px;
  --r-large: 20px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 14px 40px rgba(0, 0, 0, 0.45);
  --container: 1200px;
  --header-h: 72px;
  --font-ch: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* ===== reset & base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  font-family: var(--font-ch);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.no-scroll {
  overflow: hidden;
}

img {
  max-width: 100%;
  display: block;
  border-radius: var(--r-card);
}

a {
  color: var(--text-main);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent);
}

button, input, select, textarea {
  font-family: inherit;
  font-size: 1rem;
}

ul, ol {
  list-style: none;
}

.container {
  width: min(100% - 48px, var(--container));
  margin-inline: auto;
}

.section {
  padding: 96px 0;
}

.section-head {
  margin-bottom: 44px;
  max-width: 760px;
}

.section-head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.section-head .eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

.section-head h2 {
  color: var(--text-main);
  font-size: clamp(30px, 4vw, 36px);
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: 0;
  position: relative;
}

.section-head h2 .dot-line {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(37, 209, 218, 0.8);
  margin-left: 8px;
  vertical-align: middle;
}

.section-head p {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.8;
  margin-top: 14px;
}

/* ===== glass card common ===== */
.glass-card {
  position: relative;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--r-card);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.glass-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 24px;
  right: 24px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  pointer-events: none;
}

.glass-card:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 209, 218, 0.35);
  box-shadow: var(--shadow-hover);
}

/* ===== buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: 999px;
  font-weight: 600;
  line-height: 1;
  padding: 16px 30px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.25s ease;
  text-align: center;
}

.btn i {
  font-size: 14px;
}

.btn-primary {
  color: #F5F9FF;
  border: none;
  background: linear-gradient(135deg, var(--primary-bright), var(--primary) 55%, #0A5FD9);
  box-shadow: 0 0 20px rgba(37, 209, 218, 0.25), 0 6px 18px rgba(11, 111, 240, 0.32);
}

.btn-primary:hover {
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(37, 209, 218, 0.42), 0 12px 24px rgba(11, 111, 240, 0.38);
}

.btn-primary:active {
  transform: translateY(0.5px);
  box-shadow: 0 0 10px rgba(37, 209, 218, 0.18), 0 4px 12px rgba(11, 111, 240, 0.2);
}

.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.text-link:focus-visible,
.nav-chip:focus-visible,
.nav-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #E6EEF7;
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  border-color: rgba(37, 209, 218, 0.55);
  color: var(--accent);
  background: rgba(37, 209, 218, 0.08);
  transform: translateY(-2px);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--text-body);
  font-weight: 500;
  transition: color 0.2s ease, gap 0.2s ease;
}

.text-link i {
  transition: transform 0.2s ease;
}

.text-link:hover {
  color: var(--accent);
}

.text-link:hover i {
  transform: translateX(3px);
}

/* ===== badge / chip ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  background: rgba(37, 209, 218, 0.12);
  border: 1px solid rgba(37, 209, 218, 0.28);
  border-radius: 999px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.badge i {
  font-size: 11px;
}

.badge-neutral {
  background: rgba(53, 201, 255, 0.1);
  border-color: rgba(53, 201, 255, 0.25);
  color: var(--blue-light);
}

/* ===== header / nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(7, 11, 20, 0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  gap: 9px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.01em;
  font-size: 20px;
  line-height: 1;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(145deg, var(--accent), var(--primary));
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  box-shadow: 0 0 16px rgba(37, 209, 218, 0.3);
}

.brand:hover {
  color: var(--text-main);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}

.header-nav::-webkit-scrollbar {
  display: none;
}

.nav-chip {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
  border: 1px solid transparent;
  background: transparent;
  position: relative;
  transition: all 0.22s ease;
}

.nav-chip i {
  font-size: 13px;
  opacity: 0.9;
}

.nav-chip:hover {
  color: var(--accent);
  background: rgba(37, 209, 218, 0.08);
  border-color: rgba(37, 209, 218, 0.2);
}

.nav-chip.active {
  color: var(--accent);
  background: rgba(37, 209, 218, 0.12);
  border-color: rgba(37, 209, 218, 0.3);
  font-weight: 600;
}

.nav-chip.active::after {
  content: "";
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: -1px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  box-shadow: 0 0 10px rgba(37, 209, 218, 0.6);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.header-cta {
  padding: 11px 22px;
  font-size: 14px;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--r-small);
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  cursor: pointer;
}

.nav-toggle i {
  font-size: 18px;
}

.mobile-nav {
  display: none;
}

/* ===== hero ===== */
.hero {
  position: relative;
  min-height: 92vh;
  padding: calc(var(--header-h) + 64px) 0 90px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(1000px 420px at 75% -10%, rgba(37, 209, 218, 0.1), transparent 60%),
    radial-gradient(900px 500px at 0% 0%, rgba(11, 111, 240, 0.16), transparent 45%),
    radial-gradient(rgba(255, 255, 255, 0.35) 1px, transparent 1px);
  background-size: auto, auto, 24px 24px;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 11, 20, 0.62) 0%, rgba(7, 11, 20, 0.86) 80%, var(--bg) 100%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 60px;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 15px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  color: var(--text-body);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  backdrop-filter: blur(8px);
}

.hero-kicker .pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(37, 209, 218, 0.6);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(37, 209, 218, 0.45); }
  70% { box-shadow: 0 0 0 10px rgba(37, 209, 218, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 209, 218, 0); }
}

.hero h1 {
  margin-top: 24px;
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.25;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.hero h1 .text-accent {
  color: var(--accent);
  position: relative;
}

.hero-sub {
  margin-top: 22px;
  max-width: 540px;
  font-size: 18px;
  line-height: 1.85;
  color: #DCE6F2;
}

.hero-actions {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.hero-mini-note {
  margin-top: 26px;
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  color: var(--text-muted);
  font-size: 13px;
}

.hero-mini-note span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-mini-note i {
  color: var(--accent);
  font-size: 11px;
}

/* hero visual */
.hero-visual {
  position: relative;
  z-index: 2;
}

.hero-window {
  background: rgba(13, 20, 36, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--r-large);
  padding: 16px 18px 20px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(14px);
  overflow: hidden;
}

.hero-window .bar {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 14px;
}

.hero-window .bar i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: block;
}

.hero-window .bar i:nth-child(1) { background: #FF5F57; }
.hero-window .bar i:nth-child(2) { background: #FEBC2E; }
.hero-window .bar i:nth-child(3) { background: #28C840; }

.hero-window .bar span {
  margin-left: 10px;
  color: var(--text-faint);
  font-size: 11px;
  font-family: monospace;
}

.hero-window .screen-box {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hero-window .mini-stat {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-window .mini-stat .num {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.hero-window .mini-stat .txt {
  font-size: 13px;
  color: var(--text-muted);
}

.hero-image-wrap {
  margin-top: 14px;
}

.hero-image-wrap img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: var(--r-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-float-card {
  position: absolute;
  right: -20px;
  bottom: -28px;
  background: rgba(16, 24, 45, 0.7);
  border: 1px solid rgba(37, 209, 218, 0.3);
  border-radius: 14px;
  padding: 15px 18px;
  backdrop-filter: blur(16px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-float-card .icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 18px;
}

.hero-float-card .text span {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
}

.hero-float-card .text strong {
  font-size: 15px;
  color: var(--text-main);
}

/* ===== metrics ===== */
.metrics-section {
  padding: 56px 0 0;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.metric-card {
  padding: 24px 26px 20px;
  position: relative;
  overflow: hidden;
}

.metric-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 18px;
  width: 44px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.metric-card .metric-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 6px;
}

.metric-card .metric-value {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--text-main);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.metric-card .metric-unit {
  font-size: 14px;
  color: var(--text-muted);
  margin-left: 6px;
  font-weight: 500;
}

.metric-card .metric-icon {
  font-size: 18px;
  color: var(--blue-light);
  opacity: 0.88;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: rgba(53, 201, 255, 0.09);
  border: 1px solid rgba(53, 201, 255, 0.2);
}

.metric-card .divider-line {
  height: 1px;
  background: rgba(255, 255, 255, 0.1);
  margin: 14px 0 12px;
}

.metric-card .metric-desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-muted);
}

/* ===== showcase / matrix ===== */
.matrix-section {
  position: relative;
}

.matrix-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.matrix-grid .matrix-card--featured {
  grid-column: span 2;
  background-image: linear-gradient(180deg, rgba(8, 13, 26, 0.4), rgba(8, 13, 26, 0.9)), url('/assets/images/coverpic/cover-2.png');
  background-size: cover;
  background-position: center;
}

.matrix-grid .matrix-card:nth-child(5) {
  grid-column: span 2;
}

.matrix-grid .matrix-card:nth-child(6) {
  grid-column: span 2;
}

@media (min-width: 1025px) {
  .matrix-grid .matrix-card--featured {
    min-height: 320px;
  }
  .matrix-grid .matrix-card {
    min-height: 220px;
  }
}

.matrix-card {
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 18px;
  min-height: 220px;
}

.matrix-card .card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.matrix-card .card-icon {
  font-size: 20px;
  color: var(--accent);
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(37, 209, 218, 0.1);
  border: 1px solid rgba(37, 209, 218, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.matrix-card h3 {
  color: var(--text-main);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 6px;
}

.matrix-card p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.matrix-card .card-link-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-top: auto;
}

.matrix-card .card-link-row .chip-tag {
  font-size: 11px;
  color: var(--text-muted);
}

.matrix-card--featured .section-snapshot {
  padding: 14px 0 0;
}

.matrix-card--featured h3 {
  font-size: 26px;
}

.matrix-card--featured p {
  font-size: 15px;
  max-width: 420px;
}

/* ===== split compare ===== */
.compare-section {
  position: relative;
}

.compare-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 14px;
}

.compare-col {
  border-radius: var(--r-large);
  padding: 32px 30px 30px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow);
}

.compare-col h3 {
  font-size: 21px;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 20px;
}

.compare-col h3 .box-no {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
}

.compare-col--primary {
  background: linear-gradient(180deg, rgba(37, 209, 218, 0.12), rgba(11, 111, 240, 0.05));
  border-color: rgba(37, 209, 218, 0.25);
}

.compare-col--primary h3 .box-no {
  background: var(--accent-soft);
  border-color: rgba(37, 209, 218, 0.35);
  color: var(--accent);
}

.compare-list li {
  display: flex;
  gap: 12px;
  padding: 15px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.1);
  font-size: 15px;
  line-height: 1.7;
}

.compare-list li:last-child {
  border-bottom: none;
}

.compare-list .state-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
}

.compare-list .state-icon --minus {
  background: rgba(255, 181, 71, 0.16);
  color: var(--amber);
}

.compare-list .state-icon--minus {
  background: rgba(255, 181, 71, 0.16);
  color: var(--amber);
}

.compare-list .state-icon--plus {
  background: rgba(37, 209, 218, 0.16);
  color: var(--accent);
}

.compare-list strong {
  color: var(--text-main);
  font-weight: 600;
}

.compare-list span {
  color: var(--text-muted);
}

.compare-note {
  margin-top: 22px;
  padding: 12px 16px;
  border-radius: var(--r-card);
  background: rgba(255, 181, 71, 0.1);
  border: 1px solid rgba(255, 181, 71, 0.2);
  color: var(--amber);
  font-size: 14px;
  display: flex;
  gap: 10px;
  align-items: center;
}

.compare-note i {
  font-size: 14px;
  color: var(--amber);
}

/* ===== access steps ===== */
.steps-section {
  background:
    linear-gradient(180deg, rgba(11, 111, 240, 0.06), rgba(7, 11, 20, 0)),
    radial-gradient(circle at 50% 0%, rgba(53, 201, 255, 0.1), transparent 45%);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}

.step-card {
  position: relative;
  padding: 28px 24px 24px;
  border-radius: var(--r-card);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.step-card:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 209, 218, 0.32);
  background: rgba(37, 209, 218, 0.06);
}

.step-card .step-num {
  counter-increment: step;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--accent-soft);
  border: 1px solid rgba(37, 209, 218, 0.3);
  color: var(--accent);
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 16px;
  font-variant-numeric: tabular-nums;
}

.step-card .step-num::after {
  content: counter(step);
}

.step-card h4 {
  color: var(--text-main);
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 9px;
  line-height: 1.4;
}

.step-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ===== update posts / cms ===== */
.update-section {
  position: relative;
}

.update-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 10px;
}

.post-card {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: var(--r-card);
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  height: 100%;
}

.post-card:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 209, 218, 0.35);
  box-shadow: var(--shadow-hover);
}

.post-thumb {
  position: relative;
  height: 150px;
  overflow: hidden;
}

.post-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
}

.post-thumb .badge-on-img {
  position: absolute;
  top: 12px;
  left: 12px;
}

.post-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 20px 20px 16px;
}

.post-body h3 {
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-main);
  font-weight: 600;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-body h3 a {
  color: inherit;
}

.post-body h3 a:hover {
  color: var(--accent);
}

.post-body .post-excerpt {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}

.post-meta {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 13px;
}

.post-meta .meta-time {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--text-faint);
}

.post-meta .meta-time i {
  font-size: 12px;
}

.post-more .text-link {
  font-size: 13px;
}

/* empty state */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 56px 20px;
  border: 1px dashed rgba(255, 255, 255, 0.2);
  border-radius: var(--r-large);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-muted);
  text-align: center;
  gap: 12px;
}

.empty-state i {
  font-size: 40px;
  color: var(--text-faint);
}

.empty-state .empty-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-body);
}

.empty-state p {
  font-size: 14px;
  color: var(--text-faint);
}

/* ===== faq ===== */
.faq-section {
  background: linear-gradient(180deg, transparent, rgba(11, 111, 240, 0.06), transparent);
}

.faq-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.4fr;
  gap: 48px;
  align-items: flex-start;
}

.faq-intro-panel {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--r-large);
  padding: 30px 26px;
  box-shadow: var(--shadow);
}

.faq-intro-panel .faq-live-title {
  font-size: 18px;
  line-height: 1.6;
  color: var(--text-main);
  margin: 14px 0 8px;
  min-height: 58px;
  font-weight: 600;
}

.faq-intro-panel p {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 18px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--r-card);
  transition: border-color 0.25s ease, background 0.25s ease;
  overflow: hidden;
}

.faq-item[open] {
  border-color: rgba(37, 209, 218, 0.35);
  background: rgba(255, 255, 255, 0.06);
}

.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 22px;
  cursor: pointer;
  color: var(--text-main);
  font-weight: 600;
  font-size: 16px;
  transition: color 0.2s;
  position: relative;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary .dot {
  width: 8px;
  height: 8px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px rgba(37, 209, 218, 0.7);
}

.faq-item[open] summary {
  color: var(--accent);
}

.faq-item summary .faq-icon {
  margin-left: auto;
  font-size: 14px;
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  transition: transform 0.25s ease;
}

.faq-item[open] summary .faq-icon {
  transform: rotate(45deg);
  background: var(--accent-soft);
  color: var(--accent);
}

.faq-answer {
  padding: 0 22px 20px 44px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
}

.faq-answer a {
  color: var(--accent);
  border-bottom: 1px solid rgba(37, 209, 218, 0.3);
}

.faq-answer a:hover {
  color: #fff;
  border-color: #fff;
}

/* ===== contact form ===== */
.contact-section {
  position: relative;
  overflow: hidden;
}

.contact-shell {
  display: grid;
  grid-template-columns: 0.9fr 1.2fr;
  gap: 44px;
  border-radius: 24px;
  padding: 46px 48px;
  background:
    linear-gradient(145deg, rgba(11, 111, 240, 0.22), rgba(7, 11, 20, 0.92) 65%),
    linear-gradient(180deg, rgba(37, 209, 218, 0.06), transparent 55%),
    url('/assets/images/backpic/back-3.png');
  background-color: #0c1428;
  background-size: cover;
  background-position: center;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: var(--shadow-hover);
  position: relative;
  overflow: hidden;
}

.contact-shell::before {
  content: "";
  position: absolute;
  right: -220px;
  top: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(37, 209, 218, 0.15), transparent 65%);
  pointer-events: none;
}

.contact-info {
  position: relative;
  z-index: 1;
}

.contact-info h2 {
  color: var(--text-main);
  font-size: clamp(24px, 3.4vw, 32px);
  line-height: 1.45;
  margin-bottom: 18px;
  font-weight: 700;
}

.contact-info .lead {
  color: var(--text-body);
  opacity: 0.88;
  font-size: 16px;
  margin-bottom: 26px;
  line-height: 1.8;
}

.contact-li {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-bottom: 30px;
}

.contact-li li {
  display: flex;
  align-items: center;
  gap: 13px;
  font-size: 15px;
  color: #DCE5F0;
}

.contact-li .li-icon {
  width: 28px;
  height: 28px;
  border-radius: 9px;
  background: var(--accent-soft);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
}

.contact-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.contact-trust .trust-pill {
  padding: 8px 13px;
  font-size: 13px;
  color: var(--text-body);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.contact-trust .trust-pill i {
  color: var(--accent);
  font-size: 12px;
}

.contact-form-card {
  position: relative;
  z-index: 1;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--r-large);
  padding: 26px;
  backdrop-filter: blur(18px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-bottom: 14px;
}

.form-group label {
  font-size: 14px;
  color: var(--text-body);
  font-weight: 500;
}

.form-group label .req {
  color: var(--accent);
  margin-left: 4px;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 10px;
  color: var(--text-main);
  padding: 13px 16px;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  width: 100%;
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%238A97AC' d='M6 8 0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 38px;
}

.form-group select option {
  background: #101a32;
  color: var(--text-body);
}

.form-group textarea {
  min-height: 90px;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-faint);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(37, 209, 218, 0.28), 0 0 18px rgba(37, 209, 218, 0.12);
}

.form-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.form-bottom .btn {
  padding: 14px 34px;
}

.form-bottom .form-tip {
  font-size: 13px;
  color: var(--text-faint);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.form-bottom .form-tip i {
  color: var(--accent);
  font-size: 12px;
}

/* ===== final cta ===== */
.final-cta-section {
  padding: 80px 0;
  text-align: center;
  position: relative;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center 70%;
}

.final-cta-section .cta-bg-mask {
  position: absolute;
  inset: 0;
  background: rgba(5, 8, 16, 0.72);
}

.final-cta-card {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 30px 42px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 28px;
  backdrop-filter: blur(14px);
}

.final-cta-card h2 {
  color: var(--text-main);
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0;
}

.final-cta-card h2 .cta-accent {
  color: var(--accent);
}

.final-cta-card p {
  color: #A9B7CC;
  font-size: 16px;
  margin-top: 18px;
  margin-bottom: 26px;
  line-height: 1.8;
}

.final-cta-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

/* ===== footer ===== */
.site-footer {
  position: relative;
  background: var(--bg-deep);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-main {
  display: grid;
  grid-template-columns: 1.2fr 1.3fr 1.1fr;
  gap: 40px;
  padding: 56px 0 42px;
}

.footer-brand {
  display: flex;
  align-items: flex-start;
  flex-direction: column;
  gap: 18px;
}

.footer-brand .f-desc {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
  max-width: 280px;
}

.footer-brand .f-contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14px;
  color: var(--text-body);
}

.footer-brand .f-contact a {
  color: var(--text-body);
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.footer-brand .f-contact a:hover {
  color: var(--accent);
}

.footer-link-group h4 {
  color: var(--text-main);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 19px;
  letter-spacing: 0;
}

.footer-link-group h4::after {
  content: "";
  display: block;
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  margin-top: 5px;
  border-radius: 2px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 14px;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 5px;
}

.footer-guide-desc {
  margin-top: 15px;
  font-size: 13px;
  color: var(--text-faint);
  line-height: 1.7;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 18px 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--text-faint);
  font-size: 13px;
}

.footer-bottom .copyright {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-bottom .tech {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-bottom a {
  color: var(--text-faint);
}

.footer-bottom a:hover {
  color: var(--accent);
}

.footer-bottom i {
  font-size: 12px;
  margin-right: 4px;
}

/* ===== scroll top ===== */
.scroll-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 90;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(13, 20, 38, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--text-body);
  backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.25s ease;
  box-shadow: var(--shadow);
}

.scroll-top.show {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.scroll-top:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ===== responsive ===== */
@media (max-width: 1200px) {
  .brand {
    font-size: 18px;
  }
  .brand-mark {
    width: 31px;
    height: 31px;
  }
  .header-nav {
    gap: 2px;
  }
  .nav-chip {
    padding: 9px 13px;
    font-size: 14px;
  }
  .hero-grid {
    gap: 36px;
  }
  .metrics-grid {
    gap: 16px;
  }
  .matrix-grid {
    gap: 18px;
  }
  .steps-grid {
    gap: 18px;
  }
  .faq-layout {
    gap: 28px;
  }
  .contact-shell {
    padding: 40px 36px;
    gap: 34px;
  }
}

@media (max-width: 1024px) {
  .hero {
    padding-top: calc(var(--header-h) + 44px);
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 52px;
  }
  .hero-sub {
    max-width: 680px;
  }
  .hero-window {
    max-width: 620px;
    margin: 0 auto;
  }
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .update-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .matrix-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .matrix-grid .matrix-card--featured {
    grid-column: span 2;
  }
  .matrix-grid .matrix-card:nth-child(5) {
    grid-column: span 2;
  }
  .matrix-grid .matrix-card:nth-child(6) {
    grid-column: span 1;
  }
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .faq-intro-panel {
    position: static;
    display: none;
  }
  .contact-shell {
    grid-template-columns: 1fr;
    padding: 34px 28px;
  }
  .footer-main {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 767px) {
  .container {
    width: min(100% - 32px, var(--container));
  }

  .section {
    padding: 56px 0;
  }

  .site-header {
    height: 64px;
  }

  .header-inner {
    height: 64px;
  }

  .header-nav {
    display: none;
  }

  .header-cta {
    display: none !important;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .mobile-nav {
    display: block;
  }

  .mobile-nav .mnav-panel {
    position: fixed;
    top: 63px;
    left: 12px;
    right: 12px;
    z-index: 999;
    background: rgba(13, 19, 34, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--r-card);
    padding: 14px;
    box-shadow: var(--shadow-hover);
    backdrop-filter: blur(22px);
    transform: translateY(-16px);
    opacity: 0;
    pointer-events: none;
    transition: all 0.2s ease;
  }

  .mobile-nav.open .mnav-panel {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-nav .mnav-panel a {
    display: flex;
    align-items: center;
    gap: 13px;
    padding: 11px 10px;
    color: var(--text-body);
    font-size: 14px;
    border-radius: 10px;
  }

  .mobile-nav .mnav-panel a:hover,
  .mobile-nav .mnav-panel a.active {
    color: var(--accent);
    background: rgba(37, 209, 218, 0.08);
  }

  .mobile-nav .mnav-panel a i {
    width: 18px;
    text-align: center;
  }

  .hero {
    min-height: auto;
    padding: calc(var(--header-h) + 34px) 0 52px;
  }

  .hero h1 {
    font-size: 30px;
  }

  .hero-sub {
    font-size: 16px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-mini-note {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .hero-float-card {
    right: 0;
  }

  .matrix-grid,
  .steps-grid {
    grid-template-columns: 1fr;
  }

  .matrix-grid .matrix-card--featured {
    grid-column: span 1;
    min-height: 260px;
  }

  .matrix-grid .matrix-card:nth-child(5),
  .matrix-grid .matrix-card:nth-child(6) {
    grid-column: span 1;
  }

  .update-grid {
    grid-template-columns: 1fr;
  }

  .compare-box {
    grid-template-columns: 1fr;
  }

  .compare-col {
    padding: 24px 20px 22px;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    padding: 18px 0;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .form-bottom .btn {
    width: 100%;
  }

  .contact-shell {
    padding: 26px 20px;
    border-radius: var(--r-large);
  }

  .contact-trust {
    flex-direction: column;
    align-items: flex-start;
  }

  .scroll-top {
    right: 16px;
    bottom: 16px;
    width: 42px;
    height: 42px;
  }
}

@media (max-width: 420px) {
  .brand {

  }

  .nav-toggle {
    width: 40px;
    height: 40px;
  }

  .hero-window {
    padding: 14px;
  }

  .hero-window .mini-stat .num {
    font-size: 18px;
  }

  .hero-window .mini-stat .txt {
    font-size: 12px;
  }

  .hero-image-wrap img {
    height: 160px;
  }

  .metric-card {
    padding: 18px 16px 16px;
  }

  .metric-card .metric-value {
    font-size: 28px;
  }

  .metric-card .metric-desc {
    font-size: 13px;
  }

  .section-head h2 {
    font-size: 24px;
  }

  .faq-item summary {
    font-size: 15px;
    padding: 16px 14px;
  }

  .faq-answer {
    padding: 0 16px 18px 34px;
  }

  .post-cert-meta {
    flex-wrap: wrap;
  }
}

/* roulang page: article */
:root {
  --bg-deep: #080d1a;
  --bg-soft: #0c1428;
  --bg-card: rgba(255,255,255,.055);
  --bg-card-hover: rgba(255,255,255,.085);
  --line: rgba(255,255,255,.14);
  --line-bright: rgba(37,209,218,.35);
  --primary: #0b6ff0;
  --accent: #25d1da;
  --accent-soft: rgba(37,209,218,.12);
  --accent-2: #35c9ff;
  --amber: #ffb547;
  --text: #fff;
  --body-text: #cdd9e8;
  --muted: #8a97ac;
  --faint: #56637a;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --shadow: 0 8px 24px rgba(0,0,0,.35);
  --shadow-deep: 0 14px 40px rgba(0,0,0,.45);
  --page-w: 1200px;
  --header-h: 72px;
  --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", -apple-system, "Segoe UI", sans-serif;
  --mono: "SF Mono", "JetBrains Mono", "Cascadia Code", Consolas, monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg-deep);
  color:var(--body-text);
  font-family:var(--font-main);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{content:"";position:fixed;inset:0;background-image:radial-gradient(circle at 20% 10%,rgba(11,111,240,.08),transparent 26%),radial-gradient(circle at 80% 0%,rgba(37,209,218,.06),transparent 30%);pointer-events:none;z-index:0}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button,input,textarea,select{font-family:inherit}
ul,ol{list-style:none}
.container{max-width:var(--page-w);margin:0 auto;padding:0 24px;position:relative;z-index:2}
::selection{background:rgba(37,209,218,.24)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}

/* ===== Header ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  height:var(--header-h);
  background:rgba(6,10,22,.92);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(255,255,255,.12);
  transition:box-shadow .3s ease;
}
.header-inner{max-width:var(--page-w);margin:0 auto;padding:0 24px;height:100%;display:flex;align-items:center;gap:28px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:22px;font-weight:700;color:#fff;letter-spacing:.5px;white-space:nowrap}
.brand-mark{
  width:38px;height:38px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(11,111,240,.85),rgba(37,209,218,.75));
  font-size:16px;font-weight:800;letter-spacing:.2px;color:#fff;
  box-shadow:0 0 18px rgba(37,209,218,.3);
}
.brand small{font-size:12px;font-weight:600;color:var(--muted);display:block;line-height:1.2}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.header-nav{display:flex;align-items:center;gap:6px;flex:1;justify-content:center;flex-wrap:wrap}
.nav-chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 14px;border-radius:999px;
  background:transparent;border:1px solid transparent;
  color:var(--muted);font-size:14px;font-weight:500;
  transition:all .25s ease;white-space:nowrap;
}
.nav-chip i{font-size:13px;opacity:.9}
.nav-chip:hover{color:#fff;background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.14);transform:translateY(-1px)}
.nav-chip.active{
  color:var(--accent);
  background:var(--accent-soft);
  border-color:rgba(37,209,218,.3);
  box-shadow:inset 0 -2px 0 rgba(37,209,218,.4),0 0 14px rgba(37,209,218,.08);
}
.header-cta{margin-left:auto}
.btn{
  border-radius:10px;border:none;cursor:pointer;font-weight:600;font-size:15px;
  padding:11px 22px;transition:all .25s ease;display:inline-flex;align-items:center;gap:8px;
}
.btn-primary{
  color:#f5f9ff;
  background:linear-gradient(125deg,#0a6cf5 10%,#309fea 70%,#25d1da 115%);
  background-size:150% 150%;
  box-shadow:0 0 20px rgba(37,209,218,.3),0 4px 18px rgba(11,111,240,.25);
}
.btn-primary:hover{background-position:90% 20%;transform:translateY(-1px);box-shadow:0 0 28px rgba(37,209,218,.42),0 6px 24px rgba(11,111,240,.3)}
.btn-primary:active{transform:translateY(.5px);box-shadow:0 0 12px rgba(37,209,218,.2)}
.btn-ghost{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.2);color:#e9f2fb;
}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);background:rgba(37,209,218,.08)}
.btn-lg{padding:14px 28px;font-size:16px}
.btn-sm{padding:8px 14px;font-size:13px;border-radius:8px}
.header-toggle{display:none;border:0;background:rgba(255,255,255,.05);width:40px;height:40px;border-radius:10px;cursor:pointer;position:relative}
.header-toggle svg{width:18px;height:18px;stroke:#cdd9e8}

/* ===== Hero Banner Post ===== */
.post-hero{
  position:relative;
  padding:52px 0 30px;
  background:linear-gradient(180deg,rgba(8,13,26,.8),rgba(12,20,40,.55)),url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.post-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(53,201,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(53,201,255,.08) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(circle at 75% 20%,#000,transparent 60%);pointer-events:none}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--muted);margin-bottom:22px}
.breadcrumb a{color:var(--muted);transition:color .2s}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb i{font-size:12px;color:#445;opacity:.5}
.crumb-current{color:var(--body-text);overflow:hidden;text-indent:0;text-overflow:ellipsis;white-space:nowrap;max-width:220px;display:inline-block}
.hero-card-line{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px}
.blog-cat{
  background:var(--accent-soft);color:var(--accent);
  font-size:13px;font-weight:700;padding:4px 13px;border-radius:999px;
  display:inline-block;border:1px solid rgba(37,209,218,.3);
}
.blog-date{font-size:14px;color:var(--muted)}
.blog-date i{margin-right:6px;color:var(--accent)}
.post-hero h1{
  font-size:38px;line-height:1.3;font-weight:700;color:#fff;
  max-width:820px;margin-bottom:14px;letter-spacing:.6px;
}
.post-hero p.article-excerpt{font-size:17px;color:#b9c9da;line-height:1.8;max-width:820px;margin-bottom:22px}

/* ===== Post Layout ===== */
.post-wrap{padding:46px 0 90px}
.post-grid{display:grid;grid-template-columns:minmax(0,1fr) 304px;gap:48px;align-items:start}
.post-main{min-width:0;background:var(--bg-card);border-radius:var(--radius-lg);border:1px solid rgba(255,255,255,.1);overflow:hidden;padding:44px 42px}
.post-body{
  color:#c6d5e6;font-size:16px;line-height:1.85;
}
.post-body h2,.post-body h3,.post-body h4{color:#fff;line-height:1.5;margin-top:1.8em;margin-bottom:.7em;font-weight:700;letter-spacing:.2px}
.post-body h2{font-size:27px;padding-bottom:12px;border-bottom:1px dotted rgba(255,255,255,.12);position:relative}
.post-body h2::before,.post-body h3::before{content:"";display:inline-block}
.post-body h3{font-size:22px;padding-left:13px;border-left:3px solid var(--accent)}
.post-body p{margin-bottom:1.6em}
.post-body ul,.post-body ol{margin:0 0 1.7em;padding-left:22px;color:#c6d5e6}
.post-body ul{list-style:none}
.post-body li{position:relative;margin-bottom:.55em;padding-left:10px}
.post-body ul li::before{content:"";position:absolute;left:-8px;top:.65em;width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 7px rgba(37,209,218,.6)}
.post-body ol{list-style:decimal}
.post-body blockquote{
  border-left:4px solid var(--accent);
  background:rgba(37,209,218,.06);
  background-image:linear-gradient(135deg,rgba(255,255,255,.03),rgba(37,209,218,.06));
  padding:18px 24px;
  margin:1.7em 0;
  border-radius:0 var(--radius) var(--radius) 0;
  color:#d6e4f5;font-style:normal;
}
.post-body blockquote p{margin-bottom:0}
.post-body code{font-family:var(--mono);background:rgba(255,255,255,.1);padding:2px 7px;border-radius:6px;font-size:.9em;color:#9ff6ff}
.post-body pre{background:#0c1428;border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:20px;overflow-x:auto;margin:1.6em 0;box-shadow:var(--shadow)}
.post-body pre code{background:none;border:0;padding:0;color:#d7e5f5;font-size:14px;line-height:1.7}
.post-body img{border-radius:16px;margin:1.6em 0;border:1px solid rgba(255,255,255,.15);box-shadow:var(--shadow)}
.post-body figure{margin-bottom:1.6em}
.post-body figure img{margin-bottom:6px}
.post-body figcaption{font-size:13px;color:var(--muted)}
.post-body table{width:100%;border-collapse:separate;border-spacing:0;margin:1.6em 0;font-size:14px;border:1px solid rgba(255,255,255,.18);border-radius:10px;overflow:hidden}
.post-body th,.post-body td{padding:10px 14px;text-align:left;border-bottom:1px solid rgba(255,255,255,.08)}
.post-body th{background:rgba(255,255,255,.1);color:#fff;font-weight:600}
.post-body tr:last-child td{border-bottom:0}
.post-body a{color:var(--accent);border-bottom:1px solid rgba(37,209,218,.4);word-break:break-all}
.post-body a:hover{color:var(--accent-2);border-bottom-color:var(--accent-2)}
.post-body hr{border:none;border-top:1px solid rgba(255,255,255,.15);margin:2em 0}
.post-editorial-note{display:block;margin-top:40px}

/* ===== Aside ===== */
.post-aside{display:flex;flex-direction:column;gap:20px;position:sticky;top:calc(var(--header-h) + 20px)}
.aside-card{background:var(--bg-card);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:22px;backdrop-filter:blur(12px);transition:transform .25s ease,border-color .25s;box-shadow:var(--shadow)}
.aside-card:hover{transform:translateY(-3px);border-color:rgba(37,209,218,.35)}
.c-sidecard{}
.c-sidecard-cover{margin:-22px -22px 14px;border-radius:20px 20px 0 0;position:relative;min-height:104px;background:linear-gradient(135deg,rgba(37,209,218,.08),rgba(11,111,240,.2)),url('/assets/images/coverpic/cover-4.webp') center/cover no-repeat;overflow:hidden}
.aside-card h3,.aside-title{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:700;color:#fff;margin-bottom:14px}
.aside-card h3 i,.aside-title i{color:var(--accent)}
.aside-card-card p{color:var(--muted);font-size:13px;line-height:1.9}
.aside-card .btn{margin-top:14px;width:100%;justify-content:center;font-size:13px;padding:9px 12px}
.nav-items .nav-item{
  display:flex;align-items:center;gap:9px;
  background:transparent;border:1px solid rgba(255,255,255,.09);border-radius:12px;
  padding:10px 14px;margin-bottom:8px;
  color:var(--body-text);font-size:14px;transition:all .2s;
}
.nav-item:hover{border-color:rgba(37,209,218,.3);color:#fff;background:rgba(37,209,218,.06)}
.nav-item i{width:20px;color:var(--accent);font-size:14px}
.help-box{background:linear-gradient(140deg,rgba(11,111,240,.2),rgba(37,209,218,.08)),#0c1428;border:1px solid rgba(37,209,218,.25)}
.help-box .icon-ring{
  width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(37,209,218,.1);
  color:var(--accent);font-size:22px;margin-bottom:12px;box-shadow:0 0 18px rgba(37,209,218,.1);
}
.help-box h3{color:#fff}
.help-box p{font-size:13px;color:var(--muted);margin-bottom:10px}
.tiny-label{font-size:12px;color:var(--faint);letter-spacing:.3px}

/* ===== CTA ===== */
.post-cta{padding:58px 0;background:linear-gradient(120deg,rgba(10,48,100,.3),rgba(8,22,44,.5));border-top:1px solid rgba(37,209,218,.2)}
.cta-inner{
  background:linear-gradient(132deg,rgba(11,111,240,.3) 0%,rgba(37,209,218,.1) 50%,rgba(6,10,22,.2));
  border-radius:24px;padding:46px 42px;
  border:1px solid rgba(37,209,218,.3);
  box-shadow:var(--shadow-deep);
  position:relative;overflow:hidden;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
}
.cta-inner::after{content:"";position:absolute;width:260px;height:260px;background:rgba(53,201,255,.2);filter:blur(90px);border-radius:50%;top:-80px;right:-30px;pointer-events:none}
.cta-block h2{font-size:28px;color:#fff;font-weight:700;line-height:1.4;margin-bottom:6px;letter-spacing:.5px}
.cta-block p{color:#b9cfe8;font-size:16px;line-height:1.6}
.cta-btn-left .btn-primary i{margin-right:2px}

/* ===== Footer ===== */
.site-footer{background:#070b15;border-top:1px solid #1d2a3d;position:relative;z-index:2}
.footer-main{display:grid;grid-template-columns:1.4fr .9fr 1fr;gap:38px;padding:52px 0 30px}
.f-brand{font-size:24px;margin-bottom:14px}
.f-brand i{font-size:13px;font-style:normal}
.footer-desc{color:var(--muted);font-size:14px;line-height:1.8;margin-bottom:20px}
.footer-contact{display:flex;gap:18px;flex-wrap:wrap}
.footer-contact a{display:inline-block;color:var(--muted);font-size:14px;padding:5px 0;border-bottom:1px solid transparent}
.footer-contact a:hover{color:var(--accent)}
.footer-contact i{width:16px;color:var(--accent);margin-right:6px}
.f-link-group h4{color:#dfe7f0;font-size:16px;margin-bottom:20px;font-weight:600;letter-spacing:.2px;position:relative;padding-bottom:8px}
.f-link-group h4::after{content:"";display:block;width:26px;height:2px;border-radius:1px;background:var(--accent);box-shadow:0 0 8px rgba(37,209,218,.5);position:absolute;bottom:0;left:0}
.f-links a{display:block;color:var(--muted);font-size:14px;line-height:32px}
.f-links a:hover{color:#fff;padding-left:5px}
.f-links a i{color:var(--accent);font-size:11px;margin-right:6px}
.f-note{color:var(--faint);font-size:13px;margin-top:16px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:13px}
.f-cop i,.f-tech i{margin-right:6px;color:var(--faint)}

/* ===== Missing Post ===== */
.missing-post{text-align:center;padding:60px 25px}
.missing-icon{width:76px;height:76px;margin:0 auto 22px;border-radius:50%;background:rgba(37,209,218,.08);display:flex;align-items:center;justify-content:center;color:var(--accent);font-size:31px;box-shadow:0 0 30px rgba(37,209,218,.15)}
.missing-post h2{color:#fff;font-size:23px;margin-bottom:12px}
.missing-post p{color:var(--muted);margin-bottom:22px;font-size:15px}
.missing-post .btn{margin-top:6px}

/* ===== Table / data style small ===== */
.back-links{display:flex;align-items:center;gap:15px;margin-top:38px;border-top:1px solid rgba(255,255,255,.12);padding-top:28px;flex-wrap:wrap;font-size:14px}
.back-links a{display:inline-flex;align-items:center;gap:6px;color:var(--body-text)}
.back-links a:hover{color:var(--accent)}

/* ===== Responsive ===== */
@media only screen and (max-width: 1120px){
  .header-cta .btn-hide-when-tight{display:none}
  .post-hero h1{font-size:33px}
}
@media only screen and (max-width: 900px){
  .header-nav{gap:3px;position:fixed;top:var(--header-h);left:0;right:0;flex-direction:column;justify-content:center;gap:6px;background:rgba(7,11,22,.98);padding:0 16px 20px;display:none;border-bottom:1px solid #1b2a42}
  .header-nav.open{display:flex}
  .header-nav .nav-chip{width:100%;justify-content:flex-start;padding:12px 16px}
  .header-nav .nav-chip i{width:19px;text-align:center;margin-right:5px}
  .header-toggle{display:inline-flex;align-items:center;justify-content:center;margin-left:auto}
  .header-cta{margin-left:auto;margin-right:6px}
  .header-cta .btn{padding:8px 13px;font-size:12px}
  .brand-text small{display:none}
  .post-grid{grid-template-columns:1fr}
  .post-aside{position:static}
  .post-main{padding:34px 23px}
}
@media only screen and (max-width: 768px){
  .container{padding:0 18px}
  .header-inner{padding:0 18px}
  .post-hero{padding:36px 0 28px;border-bottom:1px solid rgba(255,255,255,.1)}
  .post-hero h1{font-size:27px;line-height:1.35}
  .post-hero .article-excerpt{font-size:15px}
  .post-wrap{padding:35px 0 70px}
  .cta-inner{padding:31px 20px;flex-direction:column;text-align:center}
  .cta-block h2{font-size:23px}
  .cta-block p{font-size:15px}
  .footer-main{grid-template-columns:1fr;gap:28px;padding:40px 0 27px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .breadcrumb{font-size:12px;gap:5px}
  .crumb-current{max-width:120px}
}
@media only screen and (max-width: 520px){
  .brand{font-size:18px}
  .brand-mark{width:34px;height:34px}
  .brand-text{font-size:17px}
  .site-header .header-cta .btn span{display:none}
  .post-main{background:transparent;border:0;padding:20px 0}
  .post-wrap{padding-top:18px}
  .back-links{gap:6px}
  .heading h1,.post-hero h1{font-size:25px}
  .post-body{font-size:15px}
  .post-body h2{font-size:22px}
  .hero-card-line{margin-bottom:11px}
  .btn-lg{width:calc(100% - 4px)}
  .post-cta{padding:36px 0}
  .f-desc{font-size:13px}
}

/* roulang page: category1 */
:root {
            --bg0: #080D1A;
            --bg1: #0C1428;
            --panel: rgba(255, 255, 255, 0.05);
            --panel-soft: rgba(255, 255, 255, 0.03);
            --panel-strong: rgba(255, 255, 255, 0.08);
            --line: rgba(255, 255, 255, 0.14);
            --line-soft: rgba(255, 255, 255, 0.08);
            --line-bright: rgba(37, 209, 218, 0.35);
            --primary: #0B6FF0;
            --primary-deep: #0A5FD8;
            --accent: #25D1DA;
            --sky: #35C9FF;
            --amber: #FFB547;
            --title: #FFFFFF;
            --text: #CDD9E8;
            --muted: #8A97AC;
            --dim: #56637A;
            --radius-s: 8px;
            --radius-m: 14px;
            --radius-l: 20px;
            --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-deep: 0 14px 40px rgba(0, 0, 0, 0.45);
            --font: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", "Helvetica Neue", Arial, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.75;
            background: radial-gradient(circle at 78% 12%, rgba(11, 111, 240, 0.1), transparent 30%), var(--bg0);
            color: var(--text);
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

        body::selection {
            background: rgba(37, 209, 218, 0.25);
        }

        img {
            max-width: 100%;
            display: block;
            border: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        ul,
        ol {
            list-style: none;
        }

        button,
        input,
        select,
        textarea {
            font: inherit;
            color: inherit;
        }

        input,
        select,
        textarea {
            outline: none;
        }

        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            color: var(--title);
            font-size: 21px;
            font-weight: 700;
            line-height: 1.2;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 11px;
            background: linear-gradient(135deg, #0B6FF0 12%, #1B8EF7 58%, #25D1DA 130%);
            color: #fff;
            font-size: 13px;
            font-weight: 800;
            letter-spacing: 0.02em;
            box-shadow: 0 0 22px rgba(37, 209, 218, 0.28);
            border: 1px solid rgba(255, 255, 255, 0.18);
        }

        .brand i {
            font-size: 17px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(8, 13, 26, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            min-height: 72px;
            padding: 12px 0;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            justify-content: center;
            min-width: 0;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 9px 16px;
            border-radius: 999px;
            font-size: 14.5px;
            font-weight: 500;
            color: #AFC0D6;
            border: 1px solid transparent;
            background: transparent;
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .nav-chip i {
            color: #7b8db0;
            font-size: 15px;
            transition: color 0.25s ease;
        }

        .nav-chip:hover {
            color: #E4EEFB;
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.12);
        }

        .nav-chip:hover i {
            color: var(--accent);
        }

        .nav-chip.active {
            background: rgba(37, 209, 218, 0.12);
            border-color: rgba(37, 209, 218, 0.3);
            color: #55E1E8;
            box-shadow: 0 0 16px rgba(37, 209, 218, 0.1);
        }

        .nav-chip.active i {
            color: var(--accent);
        }

        .header-cta {
            flex-shrink: 0;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            padding: 11px 22px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.25s ease;
            line-height: 1.4;
            text-align: center;
        }

        .btn-primary {
            background: linear-gradient(135deg, #0B6FF0 8%, #188AFF 55%, #27C9D2 148%);
            color: #F5F9FF;
            border: none;
            box-shadow:
                0 0 18px rgba(37, 209, 218, 0.22),
                0 6px 18px rgba(6, 32, 72, 0.3);
        }

        .btn-primary:hover {
            box-shadow:
                0 0 30px rgba(37, 209, 218, 0.4),
                0 10px 26px rgba(6, 32, 72, 0.34);
            transform: translateY(-1px);
            filter: brightness(1.08);
        }

        .btn-primary:active {
            transform: translateY(0.5px);
            box-shadow: 0 0 12px rgba(37, 209, 218, 0.25);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #DCE9FA;
        }

        .btn-ghost:hover {
            border-color: rgba(37, 209, 218, 0.55);
            color: #5FE4EB;
            background: rgba(37, 209, 218, 0.08);
        }

        .btn-lg {
            padding: 14px 30px;
            font-size: 16px;
        }

        .btn-block {
            width: 100%;
        }

        /* ===== Section common ===== */
        .section {
            padding: 96px 0;
        }

        .section-head {
            max-width: 880px;
            margin-bottom: 52px;
        }

        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 700;
            letter-spacing: 0.16em;
            color: var(--accent);
            text-transform: uppercase;
        }

        .section-kicker::before {
            content: "";
            width: 22px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent));
        }

        .section-title {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            color: var(--title);
            font-size: 33px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: 0.01em;
            margin-top: 12px;
        }

        .section-title::before {
            content: "";
            flex: 0 0 auto;
            width: 4px;
            margin-top: 6px;
            height: 35px;
            border-radius: 6px;
            background: linear-gradient(180deg, #0B6FF0, var(--accent));
            box-shadow: 0 0 12px rgba(37, 209, 218, 0.25);
        }

        .section-desc {
            color: #AAB9CE;
            margin-top: 16px;
            max-width: 760px;
            font-size: 16.5px;
            line-height: 1.8;
        }

        .text-accent {
            color: var(--accent);
        }

        .text-amber {
            color: var(--amber);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            overflow: hidden;
            padding: 92px 0 72px;
            background:
                radial-gradient(circle at 88% 16%, rgba(37, 209, 218, 0.22), transparent 36%),
                radial-gradient(circle at 12% 88%, rgba(11, 111, 240, 0.2), transparent 42%),
                linear-gradient(180deg, rgba(8, 13, 26, 0.68), rgba(8, 13, 26, 0.2)),
                url('/assets/images/backpic/back-1.webp') center 20% / cover no-repeat,
                var(--bg1);
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            pointer-events: none;
            background-image: radial-gradient(rgba(255, 255, 255, 0.16) 1px, transparent 1px);
            background-size: 34px 34px;
            opacity: 0.3;
            -webkit-mask-image: linear-gradient(90deg, transparent 8%, rgba(0, 0, 0, 0.7) 55%, transparent 98%);
            mask-image: linear-gradient(90deg, transparent 8%, rgba(0, 0, 0, 0.7) 55%, transparent 98%);
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 56px;
            align-items: center;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 22px;
        }

        .breadcrumb a {
            color: #B8C5D9;
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: var(--accent);
        }

        .breadcrumb i {
            color: #52607A;
            font-size: 12px;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 15px;
            border-radius: 999px;
            background: rgba(37, 209, 218, 0.1);
            border: 1px solid rgba(37, 209, 218, 0.24);
            color: #73E8EE;
            font-size: 13.5px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .eyebrow i {
            color: var(--accent);
            font-size: 12px;
        }

        .hero h1 {
            color: var(--title);
            font-size: 51px;
            font-weight: 800;
            line-height: 1.22;
            letter-spacing: -0.01em;
            margin-bottom: 20px;
        }

        .hero-lead {
            font-size: 19px;
            line-height: 1.8;
            color: #D9E7F7;
            max-width: 580px;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .hero-note {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            margin-top: 30px;
            color: var(--muted);
            font-size: 14.5px;
            line-height: 1.7;
            max-width: 520px;
        }

        .hero-note i {
            color: var(--amber);
            margin-top: 2px;
        }

        .hero-card {
            border-radius: 22px;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: var(--shadow);
            overflow: hidden;
            transform: translateY(2px);
        }

        .hero-card-img {
            position: relative;
        }

        .hero-card-img img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
        }

        .hero-card-body {
            padding: 18px 22px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            margin-bottom: 13px;
        }

        .live-chip {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 13px;
            font-weight: 600;
            color: #9FE9ED;
        }

        .live-chip i {
            color: var(--accent);
            font-size: 9px;
            text-shadow: 0 0 8px rgba(37, 209, 218, 0.7);
        }

        .card-meta span:last-child {
            color: var(--muted);
            font-size: 13px;
        }

        .hero-card-title {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .hero-card-title small {
            font-weight: 400;
            color: var(--muted);
            font-size: 13.5px;
        }

        .hero-float-chip {
            position: absolute;
            top: 24px;
            right: 22px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(8, 13, 26, 0.82);
            border: 1px solid rgba(37, 209, 218, 0.3);
            color: #fff;
            padding: 8px 14px;
            border-radius: 999px;
            font-size: 13px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
        }

        .hero-float-chip i {
            color: var(--accent);
            font-size: 11px;
        }

        /* ===== Stats ===== */
        .stats-card {
            background: var(--panel);
            border: 1px solid var(--line);
            border-radius: var(--radius-l);
            padding: 32px 28px 26px;
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: all 0.25s ease;
        }

        .stats-card::before {
            content: "";
            position: absolute;
            inset: 0 0 auto 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.24), transparent);
        }

        .stats-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(37, 209, 218, 0.3);
            transform: translateY(-4px);
            box-shadow: var(--shadow-deep);
        }

        .stats-card .num {
            display: flex;
            align-items: baseline;
            gap: 5px;
            font-size: 44px;
            font-weight: 800;
            color: var(--title);
            line-height: 1;
            font-variant-numeric: tabular-nums;
            letter-spacing: -0.02em;
        }

        .stats-card .num .unit {
            font-size: 20px;
            color: var(--accent);
            font-weight: 700;
            margin-left: 4px;
        }

        .stats-card .stat-divider {
            height: 1px;
            background: rgba(255, 255, 255, 0.12);
            margin: 21px 0 14px;
        }

        .stats-card .stat-label {
            color: #E8F0FB;
            font-size: 16px;
            font-weight: 600;
        }

        .stats-card .stat-desc {
            margin-top: 5px;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.6;
        }

        .stats-card .stat-dot {
            position: absolute;
            top: 18px;
            right: 20px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 10px var(--accent);
        }

        .stats-card:nth-child(2) .stat-dot {
            background: var(--sky);
            box-shadow: 0 0 10px var(--sky);
        }

        .stats-card:nth-child(3) .stat-dot {
            background: #7EA9FF;
            box-shadow: 0 0 10px #7EA9FF;
        }

        .stats-card:nth-child(4) .stat-dot {
            background: var(--amber);
            box-shadow: 0 0 10px var(--amber);
        }

        /* ===== Feature items ===== */
        .feature-item {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            padding: 58px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .feature-item:last-child {
            border-bottom: none;
        }

        .feature-item:first-child {
            padding-top: 4px;
        }

        .feature-copy {
            order: 1;
        }

        .feature-media {
            order: 2;
        }

        .feature-item.flip .feature-copy {
            order: 2;
        }

        .feature-item.flip .feature-media {
            order: 1;
        }

        .feature-num {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.14em;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 13px;
        }

        .feature-num i {
            font-size: 11px;
            color: var(--sky);
        }

        .feature-copy h3 {
            color: var(--title);
            font-size: 27px;
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
        }

        .feature-copy>p {
            color: var(--text);
            font-size: 16px;
            line-height: 1.9;
            margin-bottom: 22px;
        }

        .feature-list li {
            position: relative;
            padding-left: 30px;
            padding-bottom: 10px;
            color: #C5D3E6;
            font-size: 15.5px;
            line-height: 1.7;
        }

        .feature-list li i {
            position: absolute;
            left: 0;
            top: 2px;
            color: var(--accent);
            font-size: 14px;
            width: 20px;
            height: 20px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .media-frame {
            position: relative;
            border-radius: var(--radius-l);
            background: var(--panel);
            border: 1px solid var(--line);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: border-color 0.25s ease, transform 0.25s ease;
        }

        .media-frame:hover {
            border-color: rgba(37, 209, 218, 0.4);
            box-shadow: var(--shadow-deep);
        }

        .media-frame img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
        }

        .media-caption {
            position: absolute;
            left: 14px;
            bottom: 14px;
            background: rgba(8, 13, 26, 0.82);
            border: 1px solid rgba(255, 255, 255, 0.14);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            color: #E4EDFA;
            font-size: 13px;
            padding: 6px 13px;
            border-radius: 999px;
            font-weight: 500;
            letter-spacing: 0.02em;
        }

        .media-caption i {
            color: var(--accent);
            margin-right: 5px;
            font-size: 10px;
        }

        /* ===== Device section ===== */
        .device-section {
            background: linear-gradient(180deg, transparent, rgba(12, 20, 40, 0.75), transparent);
        }

        .device-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .device-card {
            border-radius: var(--radius-l);
            border: 1px solid var(--line);
            background: var(--panel);
            overflow: hidden;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all 0.25s ease;
        }

        .device-card:hover {
            border-color: rgba(37, 209, 218, 0.32);
            transform: translateY(-4px);
            box-shadow: var(--shadow-deep);
        }

        .device-thumb {
            position: relative;
            overflow: hidden;
        }

        .device-thumb img {
            width: 100%;
            height: 230px;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

        .device-card:hover .device-thumb img {
            transform: scale(1.025);
        }

        .device-thumb::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(8, 13, 26, 0.65));
        }

        .device-card-body {
            padding: 24px 26px 26px;
            position: relative;
        }

        .device-card-body h3 {
            color: var(--title);
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .device-card-body p {
            color: #B8C9DE;
            font-size: 15px;
            line-height: 1.85;
            margin-bottom: 18px;
        }

        .device-list li {
            display: flex;
            gap: 10px;
            font-size: 14.5px;
            color: var(--muted);
            line-height: 1.7;
            margin-bottom: 7px;
        }

        .device-list li i {
            color: var(--accent);
            margin-top: 3px;
            font-size: 12px;
        }

        /* ===== Process ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .process-card {
            position: relative;
            border-radius: var(--radius-m);
            border: 1px solid var(--line);
            background: var(--panel);
            padding: 27px 24px 24px 26px;
            overflow: hidden;
            transition: all 0.25s ease;
            counter-increment: step;
        }

        .process-card::before {
            content: "0" counter(step);
            position: absolute;
            right: 10px;
            top: -14px;
            font-size: 74px;
            font-weight: 800;
            color: rgba(255, 255, 255, 0.04);
            line-height: 1;
            pointer-events: none;
        }

        .process-card:hover {
            transform: translateY(-4px);
            border-color: rgba(37, 209, 218, 0.38);
            box-shadow: var(--shadow-deep);
            background: rgba(255, 255, 255, 0.065);
        }

        .process-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(11, 111, 240, 0.18);
            border: 1px solid rgba(53, 201, 255, 0.24);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            color: var(--sky);
            font-size: 18px;
        }

        .process-card h3 {
            color: #fff;
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .process-card p {
            color: var(--muted);
            font-size: 14.5px;
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: linear-gradient(180deg, var(--bg0), rgba(12, 20, 40, 0.6), var(--bg0));
        }

        .faq-wrap {
            max-width: 970px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--panel);
            border: 1px solid var(--line);
            border-radius: 16px;
            margin-bottom: 15px;
            overflow: hidden;
            transition: border-color 0.25s ease, background 0.25s ease;
        }

        .faq-item[open] {
            border-color: rgba(37, 209, 218, 0.4);
            background: rgba(255, 255, 255, 0.065);
        }

        .faq-item summary {
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 22px 26px;
            font-size: 17px;
            font-weight: 600;
            color: #F0F6FF;
            position: relative;
            transition: color 0.2s ease;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary .faq-q {
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }

        .faq-item summary .faq-q .q-badge {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--accent);
            margin-top: 11px;
            box-shadow: 0 0 8px rgba(37, 209, 218, 0.72);
            flex-shrink: 0;
        }

        .faq-item summary::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 13px;
            color: var(--muted);
            transition: transform 0.3s ease, color 0.3s ease;
            flex-shrink: 0;
            margin-right: 4px;
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-item .faq-a {
            padding: 0 26px 24px 47px;
            color: #C0D0E5;
            font-size: 15px;
            line-height: 1.85;
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            margin-top: -2px;
            padding-top: 18px;
        }

        .faq-item .faq-a a {
            color: var(--accent);
            border-bottom: 1px solid rgba(37, 209, 218, 0.25);
            transition: border-color 0.2s;
        }

        .faq-item .faq-a a:hover {
            border-color: var(--accent);
        }

        /* ===== Contact ===== */
        .contact-card {
            display: grid;
            grid-template-columns: 0.92fr 1.08fr;
            border-radius: 24px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.14);
            background:
                radial-gradient(circle at 18% 100%, rgba(11, 111, 240, 0.25), transparent 45%),
                linear-gradient(135deg, rgba(12, 20, 40, 0.98), rgba(8, 13, 26, 0.98));
            box-shadow: var(--shadow);
        }

        .contact-side {
            padding: 46px 40px;
            border-right: 1px solid rgba(255, 255, 255, 0.08);
        }

        .contact-side h2 {
            color: var(--title);
            font-size: 29px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .contact-side p {
            color: #BBCADF;
            margin-bottom: 26px;
            line-height: 1.85;
            font-size: 15.5px;
        }

        .contact-benefit {
            margin-bottom: 16px;
        }

        .contact-benefit li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: #D3E0F0;
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 14px;
        }

        .contact-benefit li i {
            color: var(--accent);
            background: rgba(37, 209, 218, 0.12);
            border: 1px solid rgba(37, 209, 218, 0.18);
            border-radius: 8px;
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            flex-shrink: 0;
            margin-top: 3px;
        }

        .contact-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            color: var(--muted);
            font-size: 13.5px;
            margin-top: 12px;
        }

        .contact-meta span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .contact-meta i {
            color: var(--sky);
            font-size: 14px;
        }

        .contact-form {
            padding: 46px 40px;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            color: #D8E6F7;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .form-group label .required {
            color: var(--accent);
            margin-left: 3px;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            background: rgba(255, 255, 255, 0.045);
            border: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: 10px;
            padding: 12px 15px;
            color: #fff;
            font-size: 15px;
            transition: all 0.25s ease;
            line-height: 1.5;
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: #66748A;
        }

        .form-group select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238A97AC' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            background-size: 14px;
            cursor: pointer;
        }

        .form-group select option {
            background: #101A30;
            color: #F0F6FF;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-color: rgba(37, 209, 218, 0.7);
            box-shadow: 0 0 0 3px rgba(37, 209, 218, 0.13), 0 0 14px rgba(37, 209, 218, 0.08);
            background: rgba(255, 255, 255, 0.06);
        }

        .form-group textarea {
            min-height: 110px;
            resize: vertical;
        }

        .form-submit {
            margin-top: 4px;
        }

        .form-privacy {
            margin-top: 12px;
            color: var(--dim);
            font-size: 13px;
            line-height: 1.6;
        }

        /* ===== CTA ===== */
        .final-cta {
            padding: 0 0 110px;
        }

        .cta-banner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            border-radius: 22px;
            padding: 42px 46px;
            background:
                radial-gradient(circle at 84% 22%, rgba(37, 209, 218, 0.18), transparent 38%),
                linear-gradient(100deg, rgba(11, 111, 240, 0.28), rgba(37, 209, 218, 0.06)),
                #0B1324;
            border: 1px solid rgba(255, 255, 255, 0.14);
            box-shadow: var(--shadow);
        }

        .cta-banner .cta-title {
            color: #fff;
            font-size: 24px;
            font-weight: 700;
            line-height: 1.4;
        }

        .cta-banner .cta-title span {
            color: var(--accent);
        }

        .cta-banner p {
            color: #C6D7EC;
            font-size: 15px;
            line-height: 1.8;
            margin-top: 10px;
        }

        /* ===== Footer ===== */
        .site-footer {
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            background: #060A14;
            padding: 68px 0 26px;
        }

        .footer-main {
            display: grid;
            grid-template-columns: 1.45fr 1fr 1fr;
            gap: 48px 40px;
        }

        .footer-brand .brand {
            font-size: 20px;
        }

        .f-desc {
            color: #8191A8;
            font-size: 14.5px;
            line-height: 1.85;
            max-width: 400px;
            margin: 18px 0 22px;
        }

        .f-contact {
            display: flex;
            flex-wrap: wrap;
            gap: 13px 24px;
        }

        .f-contact a {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            color: #aab8cd;
            font-size: 14px;
            transition: color 0.2s ease;
        }

        .f-contact a:hover {
            color: var(--accent);
        }

        .footer-link-group h4 {
            color: #EAF1FB;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 9px;
        }

        .footer-links a {
            color: #7E8DA3;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.2s ease, transform 0.2s ease;
            width: fit-content;
        }

        .footer-links a::before {
            content: "\f105";
            font-family: "Font Awesome 6 Free";
            font-size: 11px;
            color: #4d5c76;
            transition: color 0.2s ease, transform 0.2s ease;
        }

        .footer-links a:hover {
            color: var(--accent);
            transform: translateX(2px);
        }

        .footer-links a:hover::before {
            color: var(--accent);
            transform: translateX(2px);
        }

        .footer-guide-desc {
            margin-top: 20px;
            color: #5a6a82;
            font-size: 13px;
            line-height: 1.7;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px 24px;
            margin-top: 52px;
            padding-top: 22px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            color: #55637a;
            font-size: 13px;
        }

        .footer-bottom .copyright {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-bottom .tech {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-bottom i {
            color: #3e506d;
            font-size: 13px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1200px) {
            .hero h1 {
                font-size: 44px;
            }

            .section-title {
                font-size: 29px;
            }

            .feature-copy h3 {
                font-size: 24px;
            }
        }

        @media (max-width: 1024px) {
            .section {
                padding: 76px 0;
            }

            .header-inner {
                min-height: auto;
                flex-wrap: wrap;
                padding: 10px 0;
            }

            .header-nav {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                overflow-x: auto;
                scrollbar-width: none;
                padding: 4px 0 2px;
                gap: 6px;
            }

            .header-nav::-webkit-scrollbar {
                display: none;
            }

            .header-nav .nav-chip {
                flex: 0 0 auto;
            }

            .header-cta {
                display: none;
            }

            .hero {
                padding: 70px 0 58px;
            }

            .hero-inner {
                grid-template-columns: 1fr;
                gap: 38px;
            }

            .hero-card {
                max-width: 620px;
            }

            .feature-item {
                grid-template-columns: 1fr;
                gap: 34px;
                padding: 42px 0;
            }

            .feature-copy,
            .feature-item.flip .feature-copy,
            .feature-media,
            .feature-item.flip .feature-media {
                order: 0;
            }

            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }

            .contact-card {
                grid-template-columns: 1fr;
            }

            .contact-side {
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            }

            .footer-main {
                grid-template-columns: 1fr 1fr;
            }

            .footer-link-group:first-of-type {
                grid-column: 1;
            }

            .footer-link-group:nth-of-type(2) {
                grid-column: 2;
            }
        }

        @media (max-width: 767px) {
            body {
                font-size: 15px;
            }

            .container {
                padding: 0 18px;
            }

            .brand {
                font-size: 18px;
                gap: 9px;
            }

            .brand-mark {
                width: 34px;
                height: 34px;
                border-radius: 9px;
                font-size: 11px;
            }

            .section {
                padding: 60px 0;
            }

            .section-head {
                margin-bottom: 36px;
            }

            .section-title {
                font-size: 24px;
                line-height: 1.4;
                gap: 10px;
            }

            .section-title::before {
                height: 25px;
                width: 4px;
                margin-top: 7px;
            }

            .section-desc {
                font-size: 15px;
            }

            .hero {
                padding: 44px 0 54px;
            }

            .hero h1 {
                font-size: 31px;
                line-height: 1.32;
            }

            .hero-lead {
                font-size: 16px;
                margin-bottom: 24px;
            }

            .hero-actions {
                gap: 10px;
            }

            .hero-actions .btn {
                width: calc(50% - 5px);
                padding: 12px 14px;
            }

            .hero-note {
                font-size: 13px;
                margin-top: 20px;
            }

            .breadcrumb {
                font-size: 13px;
                gap: 7px;
                margin-bottom: 16px;
            }

            .eyebrow {
                font-size: 12.5px;
                padding: 6px 11px;
                margin-bottom: 17px;
            }

            .hero-card-body {
                padding: 14px 16px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }

            .stats-card {
                padding: 22px 18px 20px;
            }

            .stats-card .num {
                font-size: 32px;
            }

            .stats-card .stat-label {
                font-size: 15px;
            }

            .stats-card .stat-desc {
                font-size: 13px;
            }

            .feature-item {
                gap: 28px;
                padding: 38px 0;
            }

            .feature-copy h3 {
                font-size: 21px;
            }

            .feature-copy>p {
                font-size: 15px;
            }

            .feature-list li {
                font-size: 14px;
            }

            .device-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .process-steps {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .process-card {
                padding: 24px 20px;
            }

            .faq-item summary {
                font-size: 15.5px;
                padding: 17px 18px;
            }

            .faq-item .faq-a {
                font-size: 14px;
                padding: 0 18px 19px 34px;
            }

            .contact-side,
            .contact-form {
                padding: 28px 20px;
            }

            .form-row {
                grid-template-columns: 1fr;
                gap: 0;
            }

            .contact-side h2 {
                font-size: 23px;
            }

            .contact-side p {
                font-size: 14px;
            }

            .contact-benefit li {
                font-size: 14px;
            }

            .form-group input,
            .form-group select,
            .form-group textarea {
                font-size: 15px;
                padding: 12px 13px;
            }

            .final-cta {
                padding: 10px 0 70px;
            }

            .cta-banner {
                flex-direction: column;
                align-items: flex-start;
                padding: 28px 22px;
                gap: 16px;
            }

            .cta-banner .cta-title {
                font-size: 21px;
            }

            .cta-banner p {
                font-size: 14px;
            }

            .cta-banner .btn {
                width: 100%;
            }

            .footer-main {
                grid-template-columns: 1fr;
                gap: 36px 0;
            }

            .footer-link-group:first-of-type,
            .footer-link-group:nth-of-type(2) {
                grid-column: auto;
            }

            .f-desc {
                font-size: 14px;
            }

            .f-contact {
                flex-direction: column;
                gap: 8px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
                margin-top: 38px;
                padding-top: 18px;
            }
        }

        @media (max-width: 420px) {
            .hero-actions .btn {
                width: 100%;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }

            .stats-card .num {
                font-size: 28px;
            }

            .section-title {
                font-size: 22px;
            }
        }

/* roulang page: category2 */
:root {
  --primary: #0B6FF0;
  --primary-deep: #0A5AD6;
  --accent: #25D1DA;
  --accent-soft: rgba(37, 209, 218, 0.14);
  --cyan-light: #35C9FF;
  --amber: #FFB547;
  --bg-deep: #080D1A;
  --bg-body: #0C1428;
  --bg-soft: #101B33;
  --text-title: #FFFFFF;
  --text-body: #CDD9E8;
  --text-muted: #8A97AC;
  --text-dim: #56637A;
  --border-glass: rgba(255, 255, 255, 0.14);
  --card-glass: rgba(255, 255, 255, 0.06);
  --card-hover: rgba(255, 255, 255, 0.09);
  --header-bg: rgba(8, 13, 26, 0.92);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 14px 40px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 20px rgba(37, 209, 218, 0.32);
  --space-section: 96px;
  --max-width: 1200px;
  --gradient-primary: linear-gradient(135deg, #0B6FF0 0%, #1E9FE6 44%, #25D1DA 100%);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  background: radial-gradient(1200px 600px at 85% -10%, rgba(37, 209, 218, 0.07), transparent 60%),
              radial-gradient(900px 520px at -10% 20%, rgba(11, 111, 240, 0.1), transparent 55%),
              var(--bg-body);
  color: var(--text-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.lock {
  overflow: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

ul,
ol {
  list-style: none;
}

.container {
  width: min(var(--max-width), calc(100% - 48px));
  margin: 0 auto;
}

.section {
  padding: var(--space-section) 0;
  position: relative;
}

.section-head {
  margin-bottom: 44px;
}

.sec-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(37, 209, 218, 0.1);
  border: 1px solid rgba(37, 209, 218, 0.25);
  color: var(--cyan-light);
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
}

.sec-kicker i {
  font-size: 13px;
}

.section-head h2 {
  color: var(--text-title);
  font-size: 34px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  position: relative;
  padding-left: 18px;
  margin-bottom: 10px;
  font-weight: 700;
}

.section-head h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 4px;
  height: 26px;
  border-radius: 4px;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(37, 209, 218, 0.6);
}

.section-lead {
  font-size: 18px;
  color: var(--text-body);
  max-width: 720px;
  line-height: 1.8;
}

.text-accent {
  color: var(--accent);
}

.text-cyan {
  color: var(--cyan-light);
}

.glass-card {
  background: var(--card-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-card);
  position: relative;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  cursor: pointer;
  border-radius: var(--radius-pill);
  font-weight: 600;
  padding: 12px 22px;
  transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease, color 0.25s ease;
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.btn i {
  font-size: 15px;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #F5F9FF;
  box-shadow: 0 10px 24px rgba(37, 209, 218, 0.18), 0 4px 14px rgba(11, 111, 240, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px rgba(37, 209, 218, 0.2), 0 12px 30px rgba(37, 209, 218, 0.34), 0 4px 18px rgba(11, 111, 240, 0.32);
  filter: brightness(1.08);
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 0 0 rgba(37, 209, 218, 0.12), 0 8px 22px rgba(11, 111, 240, 0.2);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #E6EEF7;
}

.btn-outline:hover {
  border-color: rgba(37, 209, 218, 0.65);
  color: var(--accent);
  background: rgba(37, 209, 218, 0.07);
  transform: translateY(-2px);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--text-body);
  font-weight: 600;
  transition: color 0.25s ease, gap 0.25s ease;
}

.text-link i {
  font-size: 12px;
  transition: transform 0.25s ease;
}

.text-link:hover {
  color: var(--accent);
  gap: 8px;
}

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  height: 72px;
}

.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  gap: 28px;
  position: relative;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(37, 209, 218, 0.25), rgba(11, 111, 240, 0.3));
  border: 1px solid rgba(37, 209, 218, 0.45);
  color: #EAFBFF;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: -0.02em;
  box-shadow: 0 0 18px rgba(37, 209, 218, 0.16);
}

.brand-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-title);
  letter-spacing: -0.01em;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  justify-content: center;
  overflow-x: auto;
  scrollbar-width: none;
}

.header-nav::-webkit-scrollbar {
  display: none;
}

.nav-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 17px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  color: var(--text-muted);
  white-space: nowrap;
  border: 1px solid transparent;
  transition: all 0.25s ease;
  font-weight: 500;
}

.nav-chip i {
  font-size: 14px;
  opacity: 0.9;
}

.nav-chip:hover {
  color: #E2EEFB;
  background: rgba(255, 255, 255, 0.06);
}

.nav-chip.active {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: rgba(37, 209, 218, 0.3);
  box-shadow: inset 0 -2px 0 rgba(37, 209, 218, 0.7);
}

.header-cta {
  flex-shrink: 0;
  padding: 9px 20px;
  font-size: 15px;
  box-shadow: 0 6px 18px rgba(37, 209, 218, 0.18);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.nav-toggle:hover {
  border-color: rgba(37, 209, 218, 0.5);
  background: rgba(37, 209, 218, 0.1);
}

.mobile-nav {
  display: none;
}

/* ========== Hero ========== */
.hero {
  position: relative;
  padding: 80px 0 92px;
  background: linear-gradient(180deg, #060A15 0%, #0C1428 100%);
  overflow: hidden;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.13) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(800px 500px at 80% 20%, #000 0%, transparent 80%);
  opacity: 0.6;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  right: -100px;
  top: -160px;
  width: 560px;
  height: 560px;
  background: radial-gradient(circle, rgba(37, 209, 218, 0.18) 0%, transparent 65%);
  filter: blur(10px);
  pointer-events: none;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  opacity: 0.25;
  mix-blend-mode: screen;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 56px;
  align-items: center;
}

.hero-copy .kicker-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(37, 209, 218, 0.1);
  border: 1px solid rgba(37, 209, 218, 0.28);
  color: var(--cyan-light);
  padding: 5px 13px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  letter-spacing: 0.04em;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 50px;
  line-height: 1.24;
  color: #FFFFFF;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, #55DDE5, #35C9FF);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-desc {
  font-size: 19px;
  line-height: 1.8;
  color: #DCE9F6;
  max-width: 560px;
  margin-bottom: 34px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.hero-note i {
  color: var(--accent);
  margin-right: 4px;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-card {
  width: 100%;
  max-width: 430px;
  border-radius: var(--radius-lg);
  padding: 28px;
  background: rgba(12, 20, 40, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.16);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
}

.hero-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 22px;
  right: 22px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
}

.hero-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-card-title {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-weight: 700;
  font-size: 15px;
}

.hero-card-title i {
  color: var(--accent);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: var(--amber);
  background: rgba(255, 181, 71, 0.1);
  border: 1px solid rgba(255, 181, 71, 0.2);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
}

.hero-version-item {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.hero-version-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.version-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 8px;
  box-shadow: 0 0 0 4px rgba(37, 209, 218, 0.12);
  flex-shrink: 0;
}

.version-dot.secondary {
  background: var(--cyan-light);
  box-shadow: 0 0 0 4px rgba(53, 201, 255, 0.12);
}

.hero-version-item p {
  color: #C6D4E6;
  font-size: 15px;
  line-height: 1.6;
}

.hero-version-item p strong {
  display: block;
  color: #FFFFFF;
  margin-bottom: 4px;
  font-size: 15px;
}

.card-more {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 18px;
  gap: 10px;
  flex-wrap: wrap;
}

.card-more span {
  font-size: 13px;
  color: var(--text-muted);
}

.card-more span i {
  color: var(--accent);
  margin-right: 5px;
}

/* ========== Stats ========== */
.stats-section {
  padding: 70px 0 20px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.stat-card {
  border-radius: var(--radius-md);
  padding: 24px 22px;
  position: relative;
  overflow: hidden;
}

.stat-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 20px;
  right: 20px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.22), transparent);
}

.stat-card .stat-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(37, 209, 218, 0.1);
  border: 1px solid rgba(37, 209, 218, 0.2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 17px;
  margin-bottom: 16px;
}

.stat-num {
  display: flex;
  align-items: baseline;
  gap: 5px;
  color: #fff;
  font-size: 36px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
}

.stat-num small {
  font-size: 16px;
  font-weight: 600;
  color: var(--accent);
}

.stat-label {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding-top: 12px;
  margin-top: 12px;
}

/* ========== Timeline ========== */
.timeline-section {
  background: linear-gradient(180deg, transparent, rgba(11, 111, 240, 0.04) 24%, rgba(37, 209, 218, 0.03) 70%, transparent);
  padding: 110px 0;
}

.timeline-wrap {
  position: relative;
  margin-top: 20px;
}

.timeline-list {
  position: relative;
  padding-left: 26px;
}

.timeline-list::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 2px;
  bottom: 2px;
  width: 1px;
  background: linear-gradient(180deg, rgba(37, 209, 218, 0.8), rgba(53, 201, 255, 0.1));
}

.timeline-item {
  position: relative;
  padding: 0 0 28px 32px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 6px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--bg-body);
  border: 3px solid var(--accent);
  box-shadow: 0 0 0 5px rgba(37, 209, 218, 0.12), 0 0 12px rgba(37, 209, 218, 0.3);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease;
}

.timeline-card:hover {
  border-color: rgba(37, 209, 218, 0.32);
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-2px);
}

.timeline-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.time-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--cyan-light);
  background: rgba(37, 209, 218, 0.1);
  padding: 4px 11px;
  border-radius: var(--radius-pill);
}

.time-slot {
  font-size: 13px;
  color: var(--text-muted);
}

.time-slot i {
  margin-right: 4px;
}

.timeline-card h3 {
  color: #fff;
  font-size: 19px;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.timeline-card p {
  color: #BCCBDD;
  font-size: 15px;
}

.tag-new {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  color: var(--amber);
  border: 1px solid rgba(255, 181, 71, 0.26);
  background: rgba(255, 181, 71, 0.08);
  padding: 2px 9px;
  border-radius: var(--radius-pill);
}

/* ========== Split feature ========== */
.split-feature {
  padding: 100px 0;
}

.split-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 52px;
  align-items: center;
  margin-bottom: 72px;
}

.split-row:last-child {
  margin-bottom: 0;
}

.split-row.reversed {
  direction: rtl;
}

.split-row.reversed > * {
  direction: ltr;
}

.split-copy .kicker-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--accent);
  background: rgba(37, 209, 218, 0.1);
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(37, 209, 218, 0.2);
  margin-bottom: 16px;
}

.split-copy h3 {
  font-size: 30px;
  color: #fff;
  line-height: 1.4;
  margin-bottom: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.split-copy p {
  color: var(--text-body);
  font-size: 16px;
  line-height: 1.85;
  margin-bottom: 22px;
}

.bullet-list {
  margin: 18px 0 24px;
}

.bullet-list li {
  position: relative;
  padding-left: 26px;
  color: var(--text-body);
  font-size: 15px;
  margin-bottom: 14px;
  line-height: 1.7;
}

.bullet-list li::before {
  content: "\f00c";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 2px;
  color: var(--accent);
  font-size: 13px;
}

.split-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: var(--shadow-card);
  position: relative;
}

.split-media img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.split-media:hover img {
  transform: scale(1.03);
}

.split-media .media-tag {
  position: absolute;
  left: 20px;
  top: 20px;
  background: rgba(8, 13, 26, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.18);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  padding: 6px 13px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  color: #DCE9F6;
}

.split-media .media-tag i {
  color: var(--accent);
  margin-right: 5px;
}

/* ========== Type table ========== */
.table-section {
  padding: 0 0 var(--space-section);
}

.table-box {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  overflow: hidden;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
}

.table-box table {
  width: 100%;
  border-collapse: collapse;
}

.table-box th {
  background: rgba(37, 209, 218, 0.08);
  color: #E6F7FA;
  font-size: 15px;
  font-weight: 600;
  padding: 16px 20px;
  text-align: left;
  white-space: nowrap;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.table-box td {
  padding: 16px 20px;
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.6;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.table-box tr:last-child td {
  border-bottom: 0;
}

.table-box tr {
  transition: background 0.25s ease;
}

.table-box tbody tr:hover {
  background: rgba(37, 209, 218, 0.06);
}

.type-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #E3EEF9;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 4px 11px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  white-space: nowrap;
}

.type-chip i {
  color: var(--accent);
  font-size: 12px;
}

.table-note {
  margin-top: 18px;
  color: var(--text-muted);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.table-note i {
  color: var(--amber);
}

/* ========== Steps ========== */
.steps-section {
  background: rgba(11, 111, 240, 0.03);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 100px 0;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.step-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  position: relative;
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.step-card:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(37, 209, 218, 0.35);
}

.step-index {
  position: absolute;
  right: 20px;
  top: 18px;
  font-size: 44px;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.07);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.step-icon {
  width: 48px;
  height: 48px;
  border-radius: 13px;
  background: linear-gradient(135deg, rgba(37, 209, 218, 0.16), rgba(11, 111, 240, 0.16));
  border: 1px solid rgba(37, 209, 218, 0.28);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 20px;
  margin-bottom: 20px;
}

.step-card h3 {
  color: #fff;
  font-size: 19px;
  margin-bottom: 10px;
  font-weight: 700;
}

.step-card p {
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.7;
}

/* ========== FAQ ========== */
.faq-section {
  padding: var(--space-section) 0;
}

.faq-grid {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 42px;
  align-items: start;
}

.faq-side {
  position: sticky;
  top: 120px;
}

.faq-side .current-q {
  margin-top: 20px;
  padding: 20px 22px;
  background: rgba(37, 209, 218, 0.07);
  border: 1px solid rgba(37, 209, 218, 0.2);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent);
  color: #DDEFF7;
  font-size: 17px;
  line-height: 1.6;
  min-height: 96px;
  display: flex;
  align-items: center;
}

.faq-side .current-q i {
  color: var(--accent);
  margin-right: 12px;
  font-size: 20px;
  flex-shrink: 0;
}

.faq-items {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  cursor: pointer;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.faq-item.active {
  border-color: rgba(37, 209, 218, 0.38);
  background: rgba(255, 255, 255, 0.065);
  box-shadow: 0 0 24px rgba(37, 209, 218, 0.07);
}

.faq-question {
  display: flex;
  align-items: center;
  gap: 13px;
  font-size: 16px;
  font-weight: 600;
  color: #E1EBF5;
}

.faq-question .faq-circle {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-dim);
  flex-shrink: 0;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.faq-item.active .faq-circle {
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(37, 209, 218, 0.12);
}

.faq-question .faq-arrow {
  margin-left: auto;
  color: var(--text-muted);
  font-size: 14px;
  transition: transform 0.3s ease, color 0.3s ease;
}

.faq-item.active .faq-arrow {
  transform: rotate(180deg);
  color: var(--accent);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, margin-top 0.3s ease;
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  margin-top: 15px;
}

.faq-answer-inner {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 15px;
}

/* ========== Contact ========== */
.contact-section {
  padding-bottom: 120px;
}

.contact-band {
  background: linear-gradient(135deg, rgba(10, 34, 66, 0.8), rgba(5, 12, 25, 0.9));
  border: 1px solid rgba(37, 209, 218, 0.18);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  position: relative;
}

.contact-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.09) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(135deg, transparent 30%, #000 90%);
  opacity: 0.25;
  pointer-events: none;
}

.contact-inner {
  position: relative;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 32px;
  padding: 44px;
  align-items: center;
  z-index: 2;
}

.contact-left h2 {
  color: #fff;
  font-size: 28px;
  line-height: 1.4;
  margin-bottom: 14px;
  font-weight: 700;
}

.contact-left p {
  color: #AAB9CE;
  line-height: 1.8;
  margin-bottom: 24px;
}

.contact-points li {
  position: relative;
  padding-left: 28px;
  color: var(--text-body);
  font-size: 15px;
  margin-bottom: 14px;
}

.contact-points li::before {
  content: "\f058";
  font-family: "Font Awesome 6 Free";
  font-weight: 400;
  position: absolute;
  left: 0;
  top: 1px;
  color: var(--accent);
  font-size: 16px;
}

.contact-form-box {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-md);
  padding: 30px;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: 14px;
  color: #B9C8DD;
  margin-bottom: 7px;
  font-weight: 500;
}

.form-group label i {
  color: var(--accent);
  margin-right: 5px;
  font-size: 13px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  border-radius: var(--radius-sm);
  background: rgba(2, 8, 20, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #EAF1FA;
  padding: 10px 14px;
  outline: none;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(37, 209, 218, 0.18);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath fill='%238A97AC' d='M5 6 0 0h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 13px center;
  cursor: pointer;
}

.form-group textarea {
  min-height: 110px;
  resize: vertical;
}

.form-submit-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 6px;
}

.form-tip {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.form-tip i {
  color: var(--accent);
}

.contact-info-row {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 20px 22px;
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin: 0 12px 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.info-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-body);
}

.info-item i {
  color: var(--accent);
  width: 20px;
  text-align: center;
}

/* ========== Footer ========== */
.site-footer {
  background: rgba(5, 9, 18, 0.97);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(37, 209, 218, 0.4), rgba(53, 201, 255, 0.2), transparent);
}

.footer-main {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr 1fr;
  gap: 48px;
  padding: 70px 0 50px;
}

.footer-brand .brand {
  margin-bottom: 16px;
}

.f-desc {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
  margin: 14px 0 18px;
  max-width: 370px;
}

.f-contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.f-contact a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: #91A1B8;
  transition: color 0.25s ease;
}

.f-contact a:hover {
  color: var(--accent);
}

.footer-link-group h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color 0.25s ease;
}

.footer-links a::before {
  content: "\f105";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 12px;
  color: var(--text-dim);
  transition: color 0.25s ease;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-links a:hover::before {
  color: var(--accent);
}

.footer-guide-desc {
  margin-top: 18px;
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.6;
  background: rgba(255, 255, 255, 0.04);
  border-left: 2px solid rgba(37, 209, 218, 0.4);
  padding: 10px 14px;
  border-radius: 0 8px 8px 0;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 18px 0 22px;
  color: var(--text-dim);
  font-size: 13px;
}

.footer-bottom i {
  margin-right: 5px;
}

.tech {
  color: var(--text-dim);
}

@media (max-width: 1080px) {
  .hero h1 {
    font-size: 42px;
  }

  .hero-inner {
    grid-template-columns: 1fr 0.9fr;
    gap: 35px;
  }

  .split-row,
  .split-row.reversed {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .steps-grid {
    gap: 18px;
  }

  .contact-inner {
    grid-template-columns: 1fr 1fr;
    padding: 34px;
  }

  .footer-main {
    gap: 34px;
  }
}

@media (max-width: 900px) {
  .site-header .header-nav,
  .site-header .header-cta {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .mobile-nav {
    display: block;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(6, 10, 20, 0.98);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    padding: 28px 20px 40px;
    transform: translateX(105%);
    transition: transform 0.3s ease;
    overflow-y: auto;
    z-index: 99;
  }

  .mobile-nav.open {
    transform: translateX(0);
  }

  .mobile-nav .mnav-title {
    color: var(--text-dim);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 14px;
  }

  .mobile-nav .mnav-links {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 8px;
    margin-bottom: 24px;
  }

  .mobile-nav .mnav-links a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 13px 8px;
    color: #C5D2E5;
    font-size: 17px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: color 0.25s ease;
  }

  .mobile-nav .mnav-links a.active,
  .mobile-nav .mnav-links a:hover {
    color: var(--accent);
  }

  .mobile-nav .mnav-links a i {
    color: var(--accent);
    opacity: 0.7;
  }

  .mobile-nav .btn {
    width: 100%;
  }

  .mobile-nav .mask-close {
    margin-top: 20px;
    display: flex;
    justify-content: center;
  }

  .hero-inner {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    order: 2;
  }

  .hero-card {
    max-width: 520px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .split-row,
  .split-row.reversed {
    grid-template-columns: 1fr;
    direction: ltr;
  }

  .split-row.reversed > * {
    direction: ltr;
  }

  .steps-grid {
    grid-template-columns: 1fr 1fr;
  }

  .faq-grid {
    grid-template-columns: 1fr;
  }

  .faq-side {
    position: relative;
    top: auto;
  }

  .contact-inner {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-main {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  :root {
    --space-section: 70px;
  }

  .container {
    width: calc(100% - 32px);
  }

  .brand-text {
    font-size: 18px;
  }

  .hero {
    padding: 52px 0 68px;
  }

  .hero h1 {
    font-size: 31px;
  }

  .hero-desc {
    font-size: 16px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-card {
    padding: 20px;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .stat-card {
    padding: 18px;
  }

  .stat-num {
    font-size: 29px;
  }

  .section-head h2 {
    font-size: 25px;
    padding-left: 14px;
  }

  .section-head h2::before {
    height: 21px;
    top: 6px;
  }

  .section-lead {
    font-size: 15px;
  }

  .split-feature {
    padding: 70px 0;
  }

  .split-copy h3 {
    font-size: 24px;
    line-height: 1.45;
  }

  .split-copy p {
    font-size: 15px;
  }

  .split-media img {
    height: 230px;
  }

  .table-box {
    overflow-x: auto;
  }

  .table-box table {
    min-width: 760px;
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }

  .steps-section,
  .faq-section {
    padding: 70px 0;
  }

  .faq-side .current-q {
    font-size: 16px;
  }

  .contact-section {
    padding-bottom: 80px;
  }

  .contact-inner,
  .contact-form-box {
    padding: 22px;
  }

  .contact-left h2 {
    font-size: 23px;
  }

  .form-submit-row {
    flex-direction: column;
    align-items: stretch;
  }

  .form-submit-row .btn {
    width: 100%;
  }

  .contact-info-row {
    margin: 0 10px 10px;
    padding: 16px;
    justify-content: center;
  }

  .footer-main {
    grid-template-columns: 1fr;
    padding: 50px 0 32px;
    gap: 30px;
  }

  .footer-brand,
  .footer-link-group {
    width: 100%;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* roulang page: category3 */
:root{
  --bg-deep:#070B14;
  --bg-panel:#0C1428;
  --bg-panel-2:#101B31;
  --brand-blue:#0B6FF0;
  --accent-cyan:#25D1DA;
  --sky:#35C9FF;
  --amber:#FFB547;
  --white:#FFFFFF;
  --text-body:#CDD9E8;
  --text-bright:#E6EEF7;
  --muted:#8A97AC;
  --dim:#56637A;
  --border:rgba(255,255,255,.14);
  --card-bg:rgba(255,255,255,.055);
  --card-bg-strong:rgba(255,255,255,.075);
  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:20px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 14px 40px rgba(0,0,0,.45);
  --maxw:1200px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg-deep);
  color:var(--text-body);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
::selection{background:rgba(37,209,218,.28);color:#fff}
.container{
  width:min(1200px,calc(100% - 48px));
  margin-inline:auto;
}
@media(max-width:640px){.container{width:calc(100% - 32px)}}
.section{padding:96px 0;position:relative}
@media(max-width:768px){.section{padding:60px 0}}
.section-head{text-align:center;max-width:760px;margin:0 auto 56px}
.section-head.left{text-align:left;margin-left:0}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.12em;color:var(--accent-cyan);
  background:rgba(37,209,218,.08);
  border:1px solid rgba(37,209,218,.22);
  padding:8px 16px;border-radius:999px;
  margin-bottom:18px;
}
.section-title{
  color:#fff;
  font-size:clamp(27px,3.4vw,36px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
}
.section-sub{margin-top:16px;font-size:17px;color:var(--muted)}
@media(max-width:520px){.section-sub{font-size:15px}}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:46px;padding:11px 24px;
  border-radius:9px;
  font-weight:600;
  font-size:15px;
  line-height:1.2;
  transition:all .25s ease;
  border:1px solid transparent;
  position:relative;
}
.btn svg,.btn i{font-size:15px}
.btn-primary{
  background:linear-gradient(135deg,#0B6FF0 0%,#0f9de6 55%,#25D1DA 130%);
  color:#F5F9FF;
  box-shadow:0 0 26px rgba(37,209,218,.26),0 8px 20px rgba(8,14,30,.4);
}
.btn-primary:hover{
  box-shadow:0 0 36px rgba(37,209,218,.4),0 12px 28px rgba(8,14,30,.45);
  transform:translateY(-1px);
  color:#fff;
}
.btn-primary:active{
  transform:translateY(.5px);
  box-shadow:0 0 14px rgba(37,209,218,.16);
}
.btn-ghost{
  background:rgba(255,255,255,.06);
  border-color:rgba(255,255,255,.2);
  color:var(--text-bright);
}
.btn-ghost:hover{
  border-color:rgba(37,209,218,.65);
  color:var(--accent-cyan);
  background:rgba(37,209,218,.05);
}
.btn[disabled]{opacity:.55;cursor:not-allowed;box-shadow:none;transform:none}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent-cyan);
  outline-offset:3px;
}

.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(7,11,20,.82);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(255,255,255,.09);
}
.header-inner{
  min-height:72px;
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:22px;font-weight:800;color:#fff;
  white-space:nowrap;
}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(145deg,#0B6FF0,#25D1DA);
  color:#fff;font-size:14px;font-weight:800;
  letter-spacing:0;
  box-shadow:0 0 18px rgba(37,209,218,.3);
}
.header-nav-wrap{
  display:flex;align-items:center;gap:12px;flex:1;justify-content:flex-end;
}
.header-nav{
  display:flex;align-items:center;gap:6px;
  flex-wrap:nowrap;
}
.nav-chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 15px;
  border-radius:999px;
  border:1px solid transparent;
  color:var(--muted);
  font-size:14px;
  white-space:nowrap;
  transition:all .22s ease;
}
.nav-chip i{font-size:13px}
.nav-chip:hover{
  color:var(--text-bright);
  background:rgba(255,255,255,.045);
  border-color:rgba(255,255,255,.1);
}
.nav-chip.active{
  color:var(--accent-cyan);
  background:rgba(37,209,218,.12);
  border-color:rgba(37,209,218,.32);
  box-shadow:0 0 16px rgba(37,209,218,.08);
}
.nav-cta{
  min-height:38px;padding:8px 17px;
  font-size:14px;
  border-radius:999px;
}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;height:44px;
  border:1px solid rgba(255,255,255,.16);
  border-radius:10px;
  background:rgba(255,255,255,.04);
  padding:10px;
  align-items:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-bright);border-radius:4px}
@media(max-width:980px){
  .nav-toggle{display:flex;margin-left:8px}
  .nav-cta{display:none}
  .header-nav-wrap{
    position:absolute;top:72px;left:12px;right:12px;
    display:none;
    flex-direction:column;
    align-items:stretch;
    background:rgba(12,20,40,.96);
    border:1px solid var(--border);
    border-radius:16px;
    padding:16px;
    gap:10px;
    box-shadow:0 20px 44px rgba(0,0,0,.5);
    backdrop-filter:blur(24px);
  }
  .header-nav-wrap.open{display:flex}
  .header-nav{
    flex-direction:column;
    align-items:stretch;
    gap:4px;
  }
  .nav-chip{
    justify-content:flex-start;
    padding:12px 15px;
    border-radius:10px;
  }
}

.hero{
  position:relative;
  padding:92px 0 84px;
  overflow:hidden;
  color:var(--text);
}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background:linear-gradient(115deg,rgba(7,11,20,.98) 10%,rgba(7,11,20,.75) 48%,rgba(8,18,32,.85) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.hero-bg::after{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(37,209,218,.16) 1px,transparent 1px);
  background-size:28px 28px;
  mask-image:linear-gradient(to left,transparent 8%,#000 90%);
  -webkit-mask-image:linear-gradient(to left,transparent 8%,#000 90%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;
  grid-template-columns:1.02fr .98fr;
  gap:56px;
  align-items:center;
}
.hero-breadcrumb{
  display:inline-flex;align-items:center;gap:9px;flex-wrap:wrap;
  color:var(--text-bright);
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  border-radius:999px;
  padding:8px 16px;
  font-size:13.5px;
  margin-bottom:20px;
  vertical-align:middle;
}
.dot{padding-left:8px;margin-left:6px;color:var(--accent-cyan)}
.hero-breadcrumb b{color:var(--accent-cyan);font-weight:600}
.hero h1{
  color:#fff;
  font-size:clamp(34px,5vw,56px);
  line-height:1.18;
  font-weight:800;
  letter-spacing:-.02em;
}
.hero-sub{
  margin-top:20px;
  font-size:clamp(16px,1.6vw,19px);
  color:var(--text-bright);
  max-width:610px;
  line-height:1.75;
}
.hero-actions{
  display:flex;gap:14px;flex-wrap:wrap;
  margin-top:30px;
}
.hero-remark{
  margin-top:20px;
  display:flex;align-items:center;gap:8px;
  font-size:14px;
  color:var(--muted);
}
.hero-remark i{color:var(--sky)}
.hero-visual{
  min-width:0;
}
.visual-card{
  background:linear-gradient(150deg,rgba(255,255,255,.11),rgba(255,255,255,.035));
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--radius-lg);
  padding:14px;
  position:relative;
  box-shadow:0 20px 60px rgba(0,0,0,.45);
  backdrop-filter:blur(14px);
  transform:perspective(1200px) rotateY(-5deg) rotateX(2deg);
  transition:transform .5s ease;
}
.visual-card:hover{transform:perspective(1200px) rotateY(-1deg) rotateX(.5deg)}
.browser-bar{
  display:flex;align-items:center;gap:7px;
  padding:3px 5px 14px;
}
.browser-bar span{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.22)}
.browser-bar i{margin-left:10px;color:var(--muted);font-size:12px}
.visual-screen{
  position:relative;overflow:hidden;
  aspect-ratio:4/3;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.1);
  background:var(--bg-panel);
}
.visual-screen img{
  width:100%;height:100%;object-fit:cover;
}
.visual-shot{
  position:absolute;left:18px;bottom:18px;
  background:rgba(12,20,40,.82);
  border:1px solid rgba(255,255,255,.16);
  border-radius:14px;
  padding:12px 16px;
  display:flex;align-items:center;gap:10px;
  backdrop-filter:blur(10px);
  color:#fff;
  font-size:13px;
  box-shadow:0 12px 30px rgba(0,0,0,.35);
}
.visual-shot i{color:var(--accent-cyan);font-size:17px}
@media(max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .visual-card{transform:none}
}
@media(max-width:520px){
  .hero{padding:56px 0 56px}
  .hero-actions .btn{width:100%}
  .visual-shot{left:10px;right:10px;bottom:10px}
  .visual-shot span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
}

.metric-strip{
  margin-top:-32px;
  position:relative;z-index:3;
  padding-bottom:72px;
}
.metric-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:16px;
}
.metric-card{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:24px;
  backdrop-filter:blur(12px);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
  position:relative;
  overflow:hidden;
}
.metric-card::after{
  content:"";position:absolute;left:0;top:14%;
  width:3px;height:72%;
  background:var(--accent-cyan);
  opacity:.65;
  border-radius:8px;
}
.metric-card:hover{
  transform:translateY(-4px);
  border-color:rgba(37,209,218,.34);
  box-shadow:var(--shadow-hover);
}
.metric-num{
  font-size:31px;font-weight:800;
  color:#fff;
  font-variant-numeric:tabular-nums;
  display:flex;align-items:baseline;gap:7px;
}
.metric-num small{font-size:14px;color:var(--sky);font-weight:600}
.metric-label{
  margin-top:14px;color:var(--muted);font-size:14px;
  line-height:1.55;
}
.metric-label strong{color:var(--text-bright);font-weight:600}
@media(max-width:1023px){
  .metric-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:480px){
  .metric-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .metric-card{padding:17px}
  .metric-num{font-size:23px;flex-direction:column;gap:2px}
  .metric-label{font-size:13px}
}

.feature-section{
  background:linear-gradient(to bottom,transparent,rgba(11,18,36,.5) 35%,transparent 90%);
}
.media-row + .media-row{margin-top:88px}
.media-grid{
  display:grid;
  grid-template-columns:0.92fr 1.08fr;
  gap:56px;
  align-items:center;
}
.media-row.reverse .media-grid{grid-template-columns:1.08fr .92fr}
.media-content{min-width:0}
.media-kicker{
  font-size:13px;
  letter-spacing:.12em;
  color:var(--accent-cyan);
  display:inline-flex;align-items:center;gap:8px;
  margin-bottom:14px;
}
.media-kicker::before{content:"";width:22px;height:3px;background:var(--accent-cyan);border-radius:99px}
.media-content h2{
  color:#fff;
  font-size:clamp(23px,2.8vw,32px);
  line-height:1.3;
  margin-bottom:18px;
  font-weight:750;
}
.media-content p{color:var(--text-body);font-size:16px;margin-bottom:18px}
.media-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:11px 0;
  border-top:1px solid rgba(255,255,255,.07);
  font-size:15px;
}
.media-list li:last-child{border-bottom:1px solid rgba(255,255,255,.07)}
.media-list .checked{
  flex:0 0 22px;height:22px;margin-top:4px;
  border-radius:50%;
  background:rgba(37,209,218,.14);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--accent-cyan);
  font-size:12px;
}
.media-link{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:14px;
  color:var(--accent-cyan);
  font-weight:500;
  font-size:15px;
  transition:gap .25s ease;
}
.media-link:hover{gap:12px;color:#fff}
.media-frame{
  border-radius:20px;
  padding:8px;
  background:linear-gradient(150deg,rgba(37,209,218,.16),rgba(255,255,255,.04) 22%,rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.13);
}
.media-frame img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:14px;
  background:var(--bg-panel-2);
}
.media-caption{text-align:center;font-size:13px;color:var(--dim);padding-top:11px}
@media(max-width:920px){
  .media-grid,.media-row.reverse .media-grid{grid-template-columns:1fr;gap:24px}
  .media-row.reverse .media-content{order:2}
  .media-row.reverse .media-frame{order:1}
}

.scene-card{
  border-radius:var(--radius-lg);
  padding:10px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.table-scroll{overflow-x:auto}
.scene-table{width:100%;border-collapse:collapse;background:rgba(255,255,255,.015)}
.scene-table th,.scene-table td{
  padding:16px 15px;text-align:left;
  font-size:14.5px;
  border-bottom:1px solid rgba(255,255,255,.08);
  vertical-align:top;
}
.scene-table thead th{
  background:rgba(255,255,255,.03);
  color:var(--text-bright);
  font-weight:650;
  white-space:nowrap;
}
.scene-table th:first-child,.scene-table td:first-child{border-left:0}
.scene-table tr:hover td{background:rgba(37,209,218,.04)}
.scene-device{font-weight:650;color:#fff;white-space:nowrap}
.scene-table .brow{color:var(--sky);font-size:13.5px}
.scene-table .tag{
  display:inline-block;
  background:rgba(37,209,218,.1);
  border:1px solid rgba(37,209,218,.22);
  color:var(--accent-cyan);
  font-size:12px;
  padding:3px 10px;
  border-radius:99px;
}
@media(max-width:640px){
  .scene-table th,.scene-table td{padding:12px;min-width:135px}
  .scene-table th:last-child,.scene-table td:last-child{min-width:210px}
}

.flow-section{
  background:linear-gradient(140deg,rgba(11,28,52,.45),rgba(12,20,40,.1) 45%,rgba(18,20,45,.25));
}
.step-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:20px;
  counter-reset:step;
}
.step-item{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:30px;
  position:relative;
  transition:transform .25s ease,border-color .25s ease,background .25s ease;
}
.step-item::before{
  content:counter(step,decimal-leading-zero);
  counter-increment:step;
  font-size:31px;
  font-weight:800;
  color:transparent;
  -webkit-text-stroke:1px rgba(37,209,218,.5);
  line-height:1;
  display:block;
  margin-bottom:18px;
}
.step-item:hover{
  transform:translateY(-5px);
  border-color:rgba(37,209,218,.36);
  background:var(--card-bg-strong);
}
.step-item h3{color:#fff;font-size:19px;margin-bottom:9px}
.step-item p{font-size:14.5px;color:var(--muted)}
@media(max-width:900px){
  .step-grid{grid-template-columns:1fr;max-width:540px;margin-inline:auto}
}

.faq-wrap{
  display:grid;
  grid-template-columns:.82fr 1.18fr;
  gap:56px;
  align-items:start;
}
.faq-intro{
  position:sticky;top:110px;
}
.faq-intro .section-sub{margin:12px 0 22px}
.faq-quick{
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  padding:20px;
  color:var(--muted);
  font-size:14px;
  margin-top:28px;
  line-height:1.8;
}
.faq-quick i{color:var(--amber);margin-right:7px}
.faq-list{min-width:0}
.faq-item{
  background:var(--card-bg);
  border:1px solid rgba(255,255,255,.12);
  border-radius:12px;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .25s ease;
}
.faq-item:hover{border-color:rgba(255,255,255,.22)}
.faq-item.open{border-left:3px solid var(--accent-cyan)}
.faq-q{
  width:100%;
  color:var(--text-bright);
  display:flex;
  gap:13px;
  align-items:center;
  justify-content:space-between;
  text-align:left;
  padding:20px 22px;
  font-weight:600;
  font-size:16px;
  line-height:1.5;
  transition:color .2s ease;
}
.faq-q:hover{color:#fff}
.faq-q .fa{
  flex:0 0 20px;
  color:var(--accent-cyan);
  font-size:15px;
  margin-top:5px;
  transition:transform .3s ease;
}
.faq-item.open .fa{transform:rotate(45deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
  color:var(--text-body);
}
.faq-a p{
 margin:0 22px 22px;
 padding-top:6px;
 font-size:15px;
 line-height:1.85;
 border-top:1px solid rgba(255,255,255,.06);
 padding-top:12px;
}
@media(max-width:920px){
  .faq-wrap{grid-template-columns:1fr;gap:36px}
  .faq-intro{position:static}
}

.cta-carbon{
  background:linear-gradient(150deg,rgba(15,25,45,.85),rgba(20,28,52,.62) 55%,rgba(10,22,40,.92));
  border:1px solid rgba(255,255,255,.15);
  border-radius:22px;
  padding:64px;
  overflow:hidden;
  position:relative;
}
.cta-carbon::before{
  content:"";
  position:absolute;right:-120px;top:-140px;
  width:360px;height:360px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(37,209,218,.16),transparent 65%);
}
.contact-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:45px;
  align-items:start;
  position:relative;z-index:2;
}
.contact-copy h2{
  color:#fff;
  font-size:clamp(25px,3vw,36px);
  line-height:1.28;
  margin-bottom:18px;
}
.contact-copy .help-list{margin-top:22px}
.help-list li{
  display:flex;gap:11px;margin-bottom:11px;
  font-size:15px;color:var(--text-bright);
}
.help-list i{
  color:var(--accent-cyan);
  margin-top:5px;
  font-size:14px;
}
.contact-form{
  background:rgba(5,8,15,.35);
  border:1px solid rgba(255,255,255,.13);
  border-radius:16px;
  padding:22px;
  box-shadow:0 14px 30px rgba(0,0,0,.25);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-field{margin-bottom:13px;display:flex;flex-direction:column}
.form-field label{
  font-size:13px;color:var(--text-bright);
  margin-bottom:6px;
}
.form-field input,.form-field select,.form-field textarea{
  width:100%;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.16);
  border-radius:9px;
  padding:11px 13px;
  font-size:14.5px;
  color:var(--text-bright);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-field textarea{min-height:88px;resize:vertical}
.form-field input::placeholder,.form-field textarea::placeholder{color:rgba(138,151,172,.85)}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;
  border-color:rgba(37,209,218,.65);
  box-shadow:0 0 0 2px rgba(37,209,218,.14);
}
.form-submit{
  background:gradient(135deg,#0B6FF0,#25D1DA);
}
.contact-note{
  margin-top:15px;
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
}
.contact-note i{color:var(--amber)}
@media(max-width:920px){
  .contact-grid{grid-template-columns:1fr;gap:26px}
  .cta-carbon{padding:34px 24px}
  .form-row{grid-template-columns:1fr}
}

.site-footer{
  background:rgba(5,8,15,.66);
  border-top:1px solid rgba(255,255,255,.08);
  margin-top:96px;
}
.footer-main{
  display:grid;
  grid-template-columns:1.1fr .7fr .9fr;
  gap:64px;
  padding:70px 0 44px;
}
.footer-brand .brand{font-size:23px}
.f-desc{
  margin:17px 0 19px;
  color:var(--muted);
  font-size:14.5px;
  max-width:380px;
}
.f-contact{display:flex;gap:8px;flex-wrap:wrap}
.f-contact a{
  display:inline-flex;align-items:center;gap:7px;
  background:rgba(255,255,255,.05);
  border-radius:999px;
  border:1px solid rgba(255,255,255,.12);
  color:var(--text-bright);
  font-size:13px;
  padding:7px 15px;
  transition:all .2s ease;
}
.f-contact a:hover{border-color:rgba(37,209,218,.4);color:var(--accent-cyan)}
.footer-link-group h4{
  color:#fff;
  font-size:15.5px;
  margin-bottom:15px;
  font-weight:650;
}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{
  color:var(--muted);
  font-size:14px;
  transition:color .2s ease,padding .2s ease;
}
.footer-links a:hover{color:var(--accent-cyan);padding-left:4px}
.footer-guide-desc{
  margin-top:18px;
  color:var(--dim);
  font-size:13px;
  border-left:2px solid rgba(37,209,218,.35);
  padding-left:12px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.07);
  padding:22px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  color:var(--dim);
  font-size:13px;
}
.footer-bottom i{color:var(--sky);margin-right:4px}
@media(max-width:900px){
  .footer-main{grid-template-columns:1fr 1fr;gap:40px}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:620px){
  .site-footer{margin-top:60px}
  .footer-main{grid-template-columns:1fr;padding-top:48px;gap:26px}
  .footer-bottom{flex-direction:column;justify-content:flex-start;align-items:flex-start}
}

/* roulang page: category4 */
:root {
    --primary: #0B6FF0;
    --primary-light: #35C9FF;
    --accent: #25D1DA;
    --amber: #FFB547;
    --bg-dark: #080D1A;
    --bg-deep: #0C1428;
    --bg-panel: rgba(255,255,255,0.05);
    --bg-panel-hover: rgba(255,255,255,0.08);
    --border-glass: rgba(255,255,255,0.14);
    --border-accent: rgba(37,209,218,0.35);
    --title: #FFFFFF;
    --text: #CDD9E8;
    --text-bright: #E6EEF7;
    --text-dim: #8A97AC;
    --text-mute: #56637A;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --shadow-card: 0 8px 24px rgba(0,0,0,0.35);
    --shadow-hover: 0 14px 40px rgba(0,0,0,0.45);
    --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
    --container: 1200px;
    --space-section: 96px;
  }

  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.7;
    background: var(--bg-dark);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image: radial-gradient(rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 26px 26px;
  }

  body::after {
    content: "";
    position: fixed;
    top: -200px;
    right: -200px;
    width: 520px;
    height: 520px;
    z-index: 0;
    pointer-events: none;
    background: radial-gradient(circle, rgba(37,209,218,0.10) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(80px);
  }

  img { display: block; max-width: 100%; }
  a { color: inherit; text-decoration: none; }
  button { font-family: inherit; }
  input, select, textarea { font-family: inherit; }

  .container {
    max-width: var(--container);
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
    position: relative;
    z-index: 2;
  }

  /* ---- Header ---- */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    z-index: 100;
    background: rgba(8, 13, 26, 0.92);
    backdrop-filter: saturate(160%) blur(14px);
    -webkit-backdrop-filter: saturate(160%) blur(14px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }

  .header-inner {
    height: 72px;
    display: flex;
    align-items: center;
    gap: 20px;
  }

  .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    font-size: 21px;
    font-weight: 700;
    color: var(--title);
    letter-spacing: 0.02em;
  }

  .brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    font-size: 15px;
    font-weight: 800;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    box-shadow: 0 0 16px rgba(37,209,218,0.35);
  }

  .header-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: 18px;
    overflow-x: auto;
    scrollbar-width: none;
    flex: 1;
  }

  .header-nav::-webkit-scrollbar { display: none; }

  .nav-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    padding: 9px 18px;
    border-radius: 999px;
    color: var(--text);
    font-size: 14.5px;
    font-weight: 500;
    background: transparent;
    border: 1px solid transparent;
    transition: all 0.25s ease;
  }

  .nav-chip i {
    font-size: 14px;
    color: var(--text-dim);
    transition: color 0.2s ease;
  }

  .nav-chip:hover {
    color: var(--text-bright);
    background: var(--bg-panel);
    border-color: rgba(255,255,255,0.08);
  }

  .nav-chip.active {
    color: var(--accent);
    background: rgba(37,209,218,0.12);
    border-color: rgba(37,209,218,0.30);
    box-shadow: 0 0 18px rgba(37,209,218,0.10);
  }

  .nav-chip.active i {
    color: var(--accent);
  }

  .header-cta {
    flex-shrink: 0;
  }

  .nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.12);
    background: rgba(255,255,255,0.05);
    color: var(--title);
    font-size: 18px;
    cursor: pointer;
    transition: all 0.2s ease;
  }

  .nav-toggle:hover {
    border-color: rgba(37,209,218,0.4);
    color: var(--accent);
  }

  /* ---- Buttons ---- */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    padding: 13px 28px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.25s ease;
    letter-spacing: 0.02em;
    line-height: 1.4;
  }

  .btn i { font-size: 14px; }

  .btn-primary {
    background: linear-gradient(135deg, #0B6FF0 0%, #1591E8 48%, #25D1DA 100%);
    color: #F5F9FF;
    box-shadow: 0 0 20px rgba(37,209,218,0.30), 0 6px 18px rgba(11,111,240,0.25);
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 28px rgba(37,209,218,0.45), 0 10px 24px rgba(11,111,240,0.30);
    filter: brightness(1.1);
  }

  .btn-primary:active {
    transform: translateY(0.5px);
    box-shadow: 0 0 8px rgba(37,209,218,0.20), 0 2px 6px rgba(11,111,240,0.15);
  }

  .btn-ghost {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.20);
    color: var(--text-bright);
    backdrop-filter: blur(6px);
  }

  .btn-ghost:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(37,209,218,0.08);
    transform: translateY(-2px);
  }

  .btn-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text);
    font-weight: 500;
    transition: all 0.2s ease;
  }

  .btn-link i { font-size: 12px; transition: transform 0.2s ease; }

  .btn-link:hover { color: var(--accent); }
  .btn-link:hover i { transform: translateX(3px); }

  :focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
  }

  /* ---- Hero ---- */
  .hero {
    position: relative;
    padding: 168px 0 88px;
    min-height: 620px;
    display: flex;
    align-items: center;
    overflow: hidden;
  }

  .hero-bg {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(115deg, rgba(8,13,26,0.78) 0%, rgba(8,13,26,0.82) 120%), url("/assets/images/backpic/back-2.webp");
    background-size: cover;
    background-position: center right;
    background-blend-mode: normal;
    z-index: 0;
  }

  .hero-bg::after {
    content: "";
    position: absolute;
    left: -10%;
    right: -10%;
    top: -30%;
    bottom: -30%;
    background-image: linear-gradient(rgba(37,209,218,0.025) 1px, transparent 1px), linear-gradient(90deg, rgba(37,209,218,0.025) 1px, transparent 1px);
    background-size: 34px 34px;
    transform: perspective(600px) rotateX(50deg) scale(1.2);
    transform-origin: center;
    mask-image: radial-gradient(circle at center, black 10%, transparent 70%);
    -webkit-mask-image: radial-gradient(circle at center, black 10%, transparent 70%);
  }

  .hero-inner {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 60px;
    position: relative;
    z-index: 2;
  }

  .hero-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 16px;
    border-radius: 999px;
    background: rgba(37,209,218,0.10);
    border: 1px solid rgba(37,209,218,0.22);
    color: var(--accent);
    font-size: 13.5px;
    font-weight: 500;
    margin-bottom: 22px;
    backdrop-filter: blur(4px);
  }

  .hero-label .label-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 10px rgba(37,209,218,0.8);
  }

  .hero h1 {
    font-size: 50px;
    line-height: 1.25;
    font-weight: 700;
    color: var(--title);
    letter-spacing: 0.03em;
    margin-bottom: 20px;
  }

  .hero .h1-mark {
    display: inline-block;
    background: linear-gradient(90deg, var(--accent), var(--primary-light));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .hero-desc {
    font-size: 18px;
    color: var(--text-bright);
    line-height: 1.8;
    margin-bottom: 30px;
    max-width: 540px;
  }

  .hero-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 26px;
  }

  .hero-trust {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 18px;
    color: var(--text-dim);
    font-size: 13px;
  }

  .hero-trust span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  .hero-trust i { color: var(--accent); font-size: 12px; }

  .hero-visual {
    position: relative;
    min-height: 360px;
  }

  .glass-stack {
    position: relative;
    width: 100%;
    min-height: 340px;
  }

  .glass-card-front {
    position: relative;
    z-index: 2;
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.16);
    border-top: 1px solid rgba(255,255,255,0.22);
    border-radius: 16px;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    padding: 26px 24px;
    box-shadow: var(--shadow-card);
    transform: translateX(-8px);
  }

  .glass-card-front .gc-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
  }

  .gc-title {
    font-size: 14px;
    color: var(--text-bright);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .gc-title i { color: var(--accent); }

  .gc-chip {
    font-size: 12px;
    color: var(--accent);
    background: rgba(37,209,218,0.14);
    padding: 3px 12px;
    border-radius: 999px;
    border: 1px solid rgba(37,209,218,0.20);
  }

  .gc-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .gc-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255,255,255,0.03);
    border-radius: 10px;
    padding: 13px 16px;
    border: 1px solid rgba(255,255,255,0.05);
    border-left: 2px solid var(--primary);
    transition: all 0.25s ease;
  }

  .gc-row:nth-child(2) { border-left-color: var(--accent); }
  .gc-row:nth-child(3) { border-left-color: var(--amber); }

  .gc-row:hover {
    background: rgba(255,255,255,0.07);
    transform: translateX(4px);
    border-left-color: var(--accent);
  }

  .gc-row span:first-child {
    color: var(--text);
    font-size: 14px;
  }

  .gc-row .row-status {
    color: var(--amber);
    font-size: 12px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
  }

  .glass-card-back {
    position: absolute;
    top: 34px;
    left: 40px;
    right: -12px;
    bottom: -22px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 16px;
    z-index: 1;
    transform: rotate(2.5deg);
  }

  .hero-report-card {
    position: absolute;
    bottom: -26px;
    left: 12px;
    z-index: 3;
    background: rgba(12, 20, 40, 0.88);
    border: 1px solid rgba(37,209,218,0.25);
    border-radius: 14px;
    backdrop-filter: blur(14px);
    padding: 14px 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  }

  .hero-report-card .num {
    font-size: 28px;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
    font-variant-numeric: tabular-nums;
  }

  .hero-report-card .metric-val { font-size: 13px; color: var(--text-dim); }

  .hero-report-card i {
    font-size: 24px;
    color: var(--primary-light);
    opacity: 0.9;
  }

  .hero-tagline {
    font-size: 12px;
    color: var(--text-dim);
    line-height: 1.4;
  }

  /* ---- Section base ---- */
  .section { padding: var(--space-section) 0; }

  .section-head {
    margin-bottom: 52px;
  }

  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--accent);
    text-transform: uppercase;
  }

  .eyebrow::before {
    content: "";
    width: 26px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), transparent);
    border-radius: 2px;
  }

  .section-title {
    font-size: 34px;
    font-weight: 700;
    line-height: 1.4;
    color: var(--title);
    margin-bottom: 14px;
    letter-spacing: 0.02em;
  }

  .section-sub {
    font-size: 16.5px;
    line-height: 1.8;
    color: var(--text-dim);
    max-width: 680px;
  }

  /* ---- Stats ---- */
  .stats-section {
    padding-bottom: var(--space-section);
  }

  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }

  .stat-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-glass);
    border-top: 1px solid rgba(255,255,255,0.22);
    border-radius: 14px;
    padding: 24px 26px;
    backdrop-filter: blur(10px);
    transition: all 0.25s ease;
  }

  .stat-card:hover {
    transform: translateY(-4px);
    border-color: rgba(37,209,218,0.30);
    box-shadow: var(--shadow-hover);
    background: var(--bg-panel-hover);
  }

  .stat-card .stat-num {
    font-size: 36px;
    font-weight: 700;
    color: var(--title);
    line-height: 1.15;
    font-variant-numeric: tabular-nums;
    display: flex;
    align-items: baseline;
    gap: 6px;
  }

  .stat-card .stat-num .unit {
    font-size: 18px;
    color: var(--accent);
    font-weight: 600;
  }

  .stat-divider {
    height: 1px;
    margin: 16px 0 12px;
    background: linear-gradient(90deg, rgba(255,255,255,0.15), transparent);
  }

  .stat-card .stat-label {
    font-size: 14px;
    color: var(--text-dim);
    line-height: 1.6;
  }

  /* ---- Service matrix ---- */
  .matrix-section {
    background: var(--bg-deep);
    position: relative;
  }

  .matrix-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 70% 20%, rgba(11,111,240,0.06), transparent 55%);
    pointer-events: none;
  }

  .matrix-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    grid-auto-rows: minmax(200px, auto);
    gap: 18px;
  }

  .matrix-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 28px;
    backdrop-filter: blur(10px);
    transition: all 0.25s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    cursor: default;
    position: relative;
    overflow: hidden;
  }

  .matrix-card:hover {
    transform: translateY(-4px);
    border-color: rgba(37,209,218,0.35);
    box-shadow: var(--shadow-hover);
    background: var(--bg-panel-hover);
  }

  .matrix-card.is-main {
    grid-row: span 2;
    background: linear-gradient(135deg, rgba(11,111,240,0.15), rgba(37,209,218,0.08));
    border-color: rgba(37,209,218,0.25);
  }

  .matrix-card.is-main::after {
    content: "";
    position: absolute;
    right: -30px;
    bottom: -30px;
    width: 140px;
    height: 140px;
    background: radial-gradient(circle, rgba(37,209,218,0.12), transparent 70%);
    border-radius: 50%;
  }

  .m-icon {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 19px;
    background: rgba(37,209,218,0.14);
    border: 1px solid rgba(37,209,218,0.22);
    color: var(--accent);
    margin-bottom: 20px;
  }

  .matrix-card .m-icon.blue { background: rgba(53,201,255,0.14); border-color: rgba(53,201,255,0.25); color: var(--primary-light); }
  .matrix-card .m-icon.amber { background: rgba(255,181,71,0.12); border-color: rgba(255,181,71,0.22); color: var(--amber); }

  .matrix-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--title);
    margin-bottom: 10px;
    line-height: 1.5;
  }

  .matrix-card p {
    font-size: 14.5px;
    color: var(--text-dim);
    line-height: 1.8;
  }

  .matrix-card .m-link {
    margin-top: 18px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13.5px;
    font-weight: 500;
    color: var(--text);
    transition: all 0.2s ease;
  }

  .matrix-card:hover .m-link { color: var(--accent); }
  .matrix-card:hover .m-link i { transform: translateX(3px); }

  .m-link i { transition: transform 0.2s ease; font-size: 12px; }

  /* ---- Alternating content blocks ---- */
  .alt-blocks { padding-bottom: var(--space-section); }

  .alt-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
    align-items: center;
    margin-bottom: 110px;
  }

  .alt-row:last-child { margin-bottom: 0; }

  .alt-row:nth-child(even) .alt-media { order: 2; }
  .alt-row:nth-child(even) .alt-body { order: 1; }

  .alt-tag {
    font-size: 12px;
    color: var(--accent);
    display: inline-block;
    letter-spacing: 0.06em;
    margin-bottom: 12px;
    font-weight: 600;
  }

  .alt-body h2 {
    font-size: 27px;
    font-weight: 700;
    color: var(--title);
    line-height: 1.5;
    margin-bottom: 18px;
  }

  .alt-body > p {
    font-size: 16px;
    line-height: 1.9;
    color: var(--text);
    margin-bottom: 22px;
  }

  .alt-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 10px;
  }

  .alt-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 14px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 10px;
    font-size: 14.5px;
    color: var(--text);
    line-height: 1.7;
    transition: all 0.2s ease;
  }

  .alt-list li:hover {
    border-color: rgba(37,209,218,0.2);
    background: rgba(37,209,218,0.06);
  }

  .alt-list li i {
    color: var(--accent);
    font-size: 13px;
    margin-top: 5px;
    flex-shrink: 0;
  }

  .alt-media {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
  }

  .alt-media::before {
    content: "";
    display: block;
    padding-top: 72%;
  }

  .alt-media img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
  }

  .alt-media:hover img { transform: scale(1.03); }

  .alt-media .media-float {
    position: absolute;
    left: 16px;
    bottom: 16px;
    background: rgba(8, 13, 26, 0.80);
    border: 1px solid rgba(37,209,218,0.25);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 13px;
    color: var(--text-bright);
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 2;
  }

  .media-float i { color: var(--accent); }

  /* ---- Timeline ---- */
  .timeline-section {
    background: var(--bg-deep);
    position: relative;
  }

  .timeline-section::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(37,209,218,0.2), transparent);
  }

  .timeline-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    counter-reset: step;
  }

  .tl-step {
    position: relative;
    background: var(--bg-panel);
    border: 1px solid var(--border-glass);
    border-radius: 14px;
    padding: 28px 24px;
    backdrop-filter: blur(8px);
    transition: all 0.25s ease;
  }

  .tl-step:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(37,209,218,0.25);
  }

  .tl-step .step-num {
    counter-increment: step;
    font-size: 32px;
    font-weight: 800;
    line-height: 1;
    color: transparent;
    -webkit-text-stroke: 1px var(--accent);
    margin-bottom: 16px;
    display: block;
    opacity: 0.8;
  }

  .tl-step:nth-child(1) .step-num { content: "01"; }
  .tl-step .step-num::before { content: "0" counter(step); }
  .tl-step:nth-child(n+10) .step-num::before { content: counter(step); }

  .tl-step h3 {
    color: var(--title);
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 10px;
  }

  .tl-step p {
    font-size: 14px;
    color: var(--text-dim);
    line-height: 1.75;
  }

  .tl-arrow {
    position: absolute;
    right: -16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent);
    font-size: 12px;
    opacity: 0.6;
    z-index: 3;
  }

  .tl-step:last-child .tl-arrow { display: none; }

  /* ---- Table ---- */
  .table-section { padding-bottom: var(--space-section); }

  .table-wrap {
    background: var(--bg-panel);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    overflow: hidden;
    backdrop-filter: blur(8px);
    box-shadow: var(--shadow-card);
  }

  .table-scroll { overflow-x: auto; }

  .cmp-table { width: 100%; border-collapse: collapse; min-width: 700px; }

  .cmp-table th {
    text-align: left;
    font-size: 14px;
    color: var(--text-bright);
    font-weight: 600;
    padding: 18px 22px;
    background: rgba(255,255,255,0.03);
    border-bottom: 1px solid rgba(255,255,255,0.10);
    white-space: nowrap;
  }

  .cmp-table td {
    padding: 16px 22px;
    font-size: 14.5px;
    color: var(--text);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    line-height: 1.7;
  }

  .cmp-table tr:last-child td { border-bottom: none; }

  .cmp-table tbody tr { transition: background 0.22s ease; }
  .cmp-table tbody tr:hover { background: rgba(37,209,218,0.05); }

  .table-status {
    color: var(--accent);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  .table-status i { font-size: 12px; }

  /* ---- FAQ ---- */
  .faq-section { padding-bottom: var(--space-section); }

  .faq-inner { max-width: 880px; margin: 0 auto; }

  .faq-list { display: flex; flex-direction: column; gap: 12px; }

  .faq-item {
    background: var(--bg-panel);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.25s ease;
    position: relative;
  }

  .faq-item:hover {
    border-color: rgba(255,255,255,0.24);
  }

  .faq-item.active {
    border-color: rgba(37,209,218,0.3);
    background: var(--bg-panel-hover);
  }

  .faq-item.active::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--accent);
    box-shadow: 0 0 12px rgba(37,209,218,0.6);
  }

  .faq-question {
    width: 100%;
    border: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    background: transparent;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 500;
    color: var(--title);
    cursor: pointer;
    text-align: left;
  }

  .faq-q-mark {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: rgba(37,209,218,0.15);
    border: 1px solid rgba(37,209,218,0.3);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    flex-shrink: 0;
  }

  .faq-q-right {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
  }

  .faq-icon {
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    color: var(--text-dim);
    transition: all 0.3s ease;
  }

  .faq-item.active .faq-icon {
    transform: rotate(45deg);
    color: var(--accent);
  }

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, opacity 0.3s ease;
    opacity: 0;
  }

  .faq-item.active .faq-answer {
    max-height: 280px;
    opacity: 1;
  }

  .faq-answer-inner {
    padding: 0 24px 22px 56px;
    font-size: 15px;
    color: var(--text);
    line-height: 1.9;
  }

  /* ---- CTA / contact ---- */
  .contact-section { padding-bottom: var(--space-section); }

  .cta-shell {
    background: linear-gradient(135deg, rgba(11,111,240,0.20), rgba(8,13,26,0.9) 58%), var(--bg-deep);
    border: 1px solid rgba(37,209,218,0.18);
    border-radius: 22px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.35);
    position: relative;
    display: grid;
    grid-template-columns: 0.92fr 1.08fr;
    gap: 0;
  }

  .cta-shell::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(37,209,218,0.8), transparent);
  }

  .cta-info {
    padding: 54px 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .cta-info h2 {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.5;
    color: var(--title);
    margin-bottom: 16px;
  }

  .cta-info > p {
    color: var(--text);
    font-size: 15.5px;
    line-height: 1.9;
    margin-bottom: 28px;
  }

  .cta-points { list-style: none; display: flex; flex-direction: column; gap: 14px; margin-bottom: 30px; }

  .cta-points li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14.5px;
    color: var(--text-bright);
  }

  .cta-points li i {
    color: var(--accent);
    background: rgba(37,209,218,0.12);
    border: 1px solid rgba(37,209,218,0.25);
    border-radius: 50%;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    flex-shrink: 0;
  }

  .cta-map {
    display: flex;
    align-items: center;
    gap: 18px;
    padding-top: 16px;
    border-top: 1px solid rgba(255,255,255,0.08);
  }

  .cta-map .map-item {
    font-size: 13.5px;
    color: var(--text-dim);
    display: flex;
    align-items: center;
    gap: 6px;
  }

  .cta-map .map-item i { color: var(--accent); }

  .contact-form-block {
    padding: 54px 48px;
    background: rgba(255,255,255,0.03);
    border-left: 1px solid rgba(255,255,255,0.06);
  }

  .contact-form-block h3 {
    color: var(--title);
    font-size: 19px;
    margin-bottom: 6px;
  }

  .contact-form-block .form-tip {
    font-size: 13.5px;
    color: var(--text-dim);
    margin-bottom: 28px;
  }

  .form-row { margin-bottom: 18px; }

  .form-row label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 8px;
  }

  .form-row .label-star { color: var(--accent); }

  .form-row input,
  .form-row select,
  .form-row textarea {
    width: 100%;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.16);
    border-radius: 10px;
    color: var(--text-bright);
    padding: 13px 16px;
    font-size: 15px;
    transition: all 0.25s ease;
  }

  .form-row input::placeholder,
  .form-row textarea::placeholder {
    color: var(--text-mute);
  }

  .form-row input:focus,
  .form-row select:focus,
  .form-row textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(37,209,218,0.12);
    background: rgba(255,255,255,0.06);
  }

  .form-row select {
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%238A97AC' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
  }

  .form-row textarea { min-height: 105px; resize: vertical; }

  .form-submit {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-top: 24px;
  }

  .form-submit .btn { flex: 1; }

  .form-hint {
    font-size: 12.5px;
    color: var(--text-mute);
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 14px;
  }

  .form-hint i { color: var(--accent); }

  /* ---- Footer ---- */
  .site-footer {
    background: #05080F;
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 60px 0 24px;
    position: relative;
    z-index: 2;
  }

  .footer-main {
    display: grid;
    grid-template-columns: 1.3fr 0.8fr 1.1fr;
    gap: 60px;
    margin-bottom: 44px;
  }

  .footer-brand .brand { margin-bottom: 16px; }

  .f-desc {
    color: var(--text-dim);
    font-size: 14.5px;
    line-height: 1.9;
    margin-bottom: 20px;
    max-width: 340px;
  }

  .f-contact {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 20px;
    font-size: 14px;
  }

  .f-contact a {
    color: var(--text);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
  }

  .f-contact a:hover { color: var(--accent); }

  .f-contact i { color: var(--accent); font-size: 12px; }

  .footer-link-group h4 {
    color: var(--title);
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 16px;
  }

  .footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .footer-links a {
    color: var(--text-dim);
    font-size: 14px;
    transition: color 0.2s ease, transform 0.2s ease;
    width: fit-content;
  }

  .footer-links a:hover { color: var(--accent); transform: translateX(3px); }

  .footer-guide-desc {
    color: var(--text-mute);
    font-size: 13px;
    line-height: 1.8;
    margin-top: 18px;
    padding-top: 16px;
    border-top: 1px solid rgba(255,255,255,0.05);
  }

  .footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
  }

  .copyright,
  .tech {
    font-size: 13px;
    color: var(--text-mute);
  }

  .copyright i,
  .tech i { font-size: 12px; margin-right: 4px; }

  .tech i { color: var(--accent); }

  /* ---- Reveal animation ---- */
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.7s ease;
  }

  .reveal.visible {
    opacity: 1;
    transform: translateY(0);
  }

  /* ---- Responsive ---- */
  @media (max-width: 1200px) {
    .hero h1 { font-size: 44px; }
    .matrix-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  }

  @media (max-width: 1024px) {
    :root { --space-section: 76px; }

    .hero { padding-top: 140px; }
    .hero-inner { grid-template-columns: 1fr; gap: 48px; }
    .hero-visual { max-width: 560px; }
    .hero-desc { max-width: 100%; }
    .matrix-grid { grid-template-columns: 1fr 1fr; }
    .matrix-card.is-main { grid-column: span 2; }
    .alt-row { gap: 40px; grid-template-columns: 1fr; }
    .alt-row:nth-child(even) .alt-media { order: 0; }
    .alt-row:nth-child(even) .alt-body { order: 0; }
    .timeline-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
    .cta-shell { grid-template-columns: 1fr; }
    .contact-form-block { border-left: none; border-top: 1px solid rgba(255,255,255,0.06); }
    .footer-main { grid-template-columns: 1fr 1fr; gap: 40px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
  }

  @media (max-width: 900px) {
    .header-nav { display: none; }
    .nav-toggle { display: flex; align-items: center; justify-content: center; }
    .header-cta { display: none; }

    .header-nav.mobile-open {
      display: flex;
      position: fixed;
      top: 72px;
      left: 16px;
      right: 16px;
      flex-direction: column;
      align-items: stretch;
      gap: 6px;
      background: rgba(8, 13, 26, 0.96);
      backdrop-filter: blur(18px);
      border: 1px solid rgba(255,255,255,0.10);
      border-radius: 16px;
      padding: 16px;
      z-index: 99;
      box-shadow: 0 24px 50px rgba(0,0,0,0.5);
      overflow: visible;
      overflow-y: auto;
      max-height: calc(100vh - 90px);
      margin-left: 0;
      flex: none;
    }

    .header-nav.mobile-open .nav-chip {
      padding: 13px 16px;
    }
  }

  @media (max-width: 768px) {
    body { font-size: 15px; }
    :root { --space-section: 60px; }

    .hero { padding: 120px 0 60px; }
    .hero h1 { font-size: 32px; }
    .hero-desc { font-size: 16.5px; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-actions .btn { width: 100%; }
    .section-title { font-size: 25px; }
    .matrix-grid { grid-template-columns: 1fr; }
    .matrix-card.is-main { grid-column: span 1; }
    .timeline-grid { grid-template-columns: 1fr 1fr; }
    .stats-grid {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .stat-card .stat-num { font-size: 29px; }
    .cta-info { padding: 40px 24px; }
    .cta-info h2 { font-size: 23px; }
    .contact-form-block { padding: 36px 24px; }
    .form-submit { flex-direction: column; align-items: stretch; }
    .footer-main { grid-template-columns: 1fr; gap: 30px; }
    .alt-list li { font-size: 14px; padding: 9px 12px; }
  }

  @media (max-width: 520px) {
    .container { padding-left: 16px; padding-right: 16px; }
    .hero h1 { font-size: 29px; }
    .hero-label { font-size: 12px; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .stat-card { padding: 18px 16px; }
    .stat-card .stat-num { font-size: 26px; }
    .stat-card .stat-label { font-size: 13px; }
    .timeline-grid { grid-template-columns: 1fr; }
    .brand { font-size: 18px; }
    .brand-mark { width: 34px; height: 34px; font-size: 13px; }
    .gc-row { padding: 10px 11px; font-size: 13px; }
    .glass-card-front { padding: 20px 16px; }
    .faq-question { font-size: 15px; padding: 17px 16px; }
    .tab-row th,
    .cmp-table td,
    .cmp-table th { padding: 13px 14px; font-size: 13px; }
    .form-row input,
    .form-row select,
    .form-row textarea { font-size: 14px; }
  }