/* roulang page: index */
:root {
  --bg-deep: #0A1628;
  --bg-section: #0E1F36;
  --brand-blue: #1D4ED8;
  --brand-blue-light: #2563EB;
  --accent-cyan: #22D3EE;
  --accent-purple: #7C3AED;
  --text-primary: #EAF2FF;
  --text-secondary: #9FB3D1;
  --border-glass: rgba(255, 255, 255, 0.10);
  --card-bg: rgba(255, 255, 255, 0.06);
  --radius-lg: 16px;
  --radius-md: 12px;
  --glow-blue: 0 0 20px rgba(29, 78, 216, 0.45);
  --glow-cyan: 0 0 12px rgba(34, 211, 238, 0.35);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-mono: "Inter", "Roboto Mono", monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

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

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

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  position: relative;
  padding: 96px 0;
}

.section-head {
  max-width: 640px;
  margin-bottom: 48px;
}

.section-bar {
  display: inline-block;
  width: 4px;
  height: 28px;
  background: var(--accent-cyan);
  border-radius: 4px;
  margin-bottom: 16px;
  box-shadow: var(--glow-cyan);
}

.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0.02em;
  margin-bottom: 12px;
}

.section-head p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.75;
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  background: rgba(10, 22, 40, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  z-index: 100;
}

.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.logo-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--brand-blue), var(--accent-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  box-shadow: var(--glow-blue);
}

.logo-text {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.logo-text .brand-primary {
  color: var(--text-primary);
}

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

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.main-nav a {
  position: relative;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 8px;
  white-space: nowrap;
}

.main-nav a:hover {
  color: var(--text-primary);
}

.main-nav a.active {
  color: var(--accent-cyan);
}

.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  background: var(--accent-cyan);
  border-radius: 2px;
  box-shadow: var(--glow-cyan);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-box i {
  position: absolute;
  left: 12px;
  color: var(--text-secondary);
  font-size: 13px;
  pointer-events: none;
}

.search-box input {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  padding: 8px 16px 8px 36px;
  color: var(--text-primary);
  font-size: 13px;
  width: 180px;
  transition: all 0.3s ease;
}

.search-box input::placeholder {
  color: rgba(159, 179, 209, 0.7);
}

.search-box input:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15);
  width: 220px;
}

.login-link {
  font-size: 14px;
  color: var(--text-secondary);
  white-space: nowrap;
}

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

.hamburger {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  font-size: 16px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.hamburger:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.mobile-menu {
  position: fixed;
  top: 72px;
  right: 0;
  width: 280px;
  background: rgba(10, 22, 40, 0.98);
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(20px);
  padding: 24px;
  transform: translateX(100%);
  transition: transform 0.35s ease;
  z-index: 99;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.mobile-menu a {
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 15px;
  color: var(--text-secondary);
}

.mobile-menu a:hover,
.mobile-menu a.active {
  color: var(--accent-cyan);
  background: rgba(34, 211, 238, 0.08);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand-blue), var(--brand-blue-light));
  color: #fff;
  box-shadow: var(--glow-blue);
}

.btn-primary:hover {
  box-shadow: 0 0 30px rgba(29, 78, 216, 0.7);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-ghost {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--text-primary);
}

.btn-ghost:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.btn-full {
  width: 100%;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 720px;
  display: flex;
  align-items: center;
  padding: 140px 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url("/assets/images/backpic/back-1.webp");
  background-size: cover;
  background-position: center;
  opacity: 0.3;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 40%, rgba(29, 78, 216, 0.30) 0%, rgba(10, 22, 40, 0.85) 60%, rgba(10, 22, 40, 1) 100%);
  z-index: 1;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(34, 211, 238, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 211, 238, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 1;
}

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

.hero-grid {
  display: grid;
  grid-template-columns: 6fr 4fr;
  gap: 64px;
  align-items: center;
}

.hero-left h1 {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: 0.02em;
  line-height: 1.25;
  margin-bottom: 16px;
  background: linear-gradient(120deg, var(--text-primary) 0%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 520px;
  margin-bottom: 32px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.hero-badges {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.hero-badges span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
}

.hero-badges i {
  color: var(--accent-cyan);
  font-size: 14px;
}

.metric-panel {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  overflow: hidden;
  backdrop-filter: blur(20px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.metric-panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 28px;
  height: 28px;
  border-top: 2px solid var(--accent-cyan);
  border-left: 2px solid var(--accent-cyan);
  border-top-left-radius: 20px;
  z-index: 2;
}

.metric-panel::after {
  content: "";
  position: absolute;
  bottom: -1px;
  right: -1px;
  width: 28px;
  height: 28px;
  border-bottom: 2px solid var(--accent-cyan);
  border-right: 2px solid var(--accent-cyan);
  border-bottom-right-radius: 20px;
  z-index: 2;
}

.metric-item {
  background: rgba(10, 22, 40, 0.85);
  padding: 24px 20px;
  min-height: 120px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  position: relative;
}

.metric-item:first-child {
  grid-column: 1 / -1;
  min-height: 140px;
  padding: 28px 24px;
}

.metric-label {
  font-size: 13px;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.metric-item:first-child .metric-value {
  font-size: 38px;
}

.metric-unit {
  font-size: 18px;
  color: var(--accent-cyan);
  margin-left: 2px;
  font-weight: 600;
}

.metric-trend {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 600;
  color: #34D399;
}

.metric-trend.up {
  color: #34D399;
}

.metric-trend.down {
  color: #F87171;
}

.scroll-indicator {
  position: absolute;
  bottom: -42px;
  right: 8px;
  color: var(--accent-cyan);
  font-size: 18px;
  animation: bounce-down 2s infinite;
  opacity: 0.7;
}

@keyframes bounce-down {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* ===== Glow dots ===== */
.glow-dot {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  filter: blur(1px);
  animation: pulse-dot 3s ease-in-out infinite;
  z-index: 1;
  pointer-events: none;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 0.9; transform: scale(1.8); }
}

/* ===== Trust bar ===== */
.trust-section {
  background: var(--bg-section);
  padding: 32px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

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

.trust-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
}

.trust-item i {
  font-size: 20px;
  color: var(--accent-cyan);
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(34, 211, 238, 0.10);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.trust-item span {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ===== Service matrix ===== */
.services-section {
  background: var(--bg-deep);
}

.service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.service-card {
  display: flex;
  align-items: stretch;
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 28px;
  gap: 20px;
  backdrop-filter: blur(20px);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.service-card:hover {
  background: rgba(255, 255, 255, 0.10);
  border-color: rgba(34, 211, 238, 0.40);
  box-shadow: var(--glow-cyan);
  transform: translateY(-4px);
}

.service-icon {
  width: 64px;
  height: 64px;
  border-radius: 10px;
  flex-shrink: 0;
  background-image:
    repeating-linear-gradient(45deg, rgba(34, 211, 238, 0.15) 0, rgba(34, 211, 238, 0.15) 2px, transparent 2px, transparent 8px),
    linear-gradient(135deg, rgba(29, 78, 216, 0.5), rgba(34, 211, 238, 0.3));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--text-primary);
}

.service-body {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.service-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}

.service-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.learn-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-top: 16px;
}

.learn-more i {
  transition: transform 0.3s ease;
}

.learn-more:hover {
  color: var(--text-primary);
}

.learn-more:hover i {
  transform: translateX(4px);
}

.service-thumb {
  width: 120px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.04);
}

.service-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== Process ===== */
.process-section {
  background: var(--bg-section);
}

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

.process-step {
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  position: relative;
  transition: all 0.3s ease;
}

.process-step:hover {
  border-color: rgba(34, 211, 238, 0.35);
  transform: translateY(-4px);
}

.step-num {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 800;
  color: rgba(34, 211, 238, 0.25);
  line-height: 1;
  display: block;
  margin-bottom: 20px;
}

.process-step h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

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

/* ===== Compare ===== */
.compare-section {
  background: var(--bg-deep);
}

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 48px;
}

.compare-card {
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(20px);
}

.compare-card.traditional {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.compare-card.modern {
  background: rgba(29, 78, 216, 0.12);
  border: 1px solid rgba(34, 211, 238, 0.30);
  box-shadow: var(--glow-cyan);
}

.compare-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 24px;
}

.compare-card ul {
  list-style: none;
}

.compare-card li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.compare-card li i {
  margin-top: 4px;
  font-size: 14px;
  flex-shrink: 0;
}

.compare-card.traditional li i {
  color: #F87171;
}

.compare-card.modern li i {
  color: #34D399;
}

.compare-card.modern li {
  color: var(--text-primary);
}

.compare-summary {
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.bar-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

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

.bar-label {
  width: 140px;
  font-size: 14px;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.bar-track {
  flex: 1;
  height: 12px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--brand-blue), var(--accent-cyan));
  border-radius: 999px;
  box-shadow: 0 0 10px rgba(34, 211, 238, 0.4);
}

.bar-value {
  width: 100px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent-cyan);
  text-align: right;
  flex-shrink: 0;
}

/* ===== News ===== */
.news-section {
  background: var(--bg-section);
}

.news-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 40px;
}

.section-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--accent-cyan);
  font-weight: 500;
  white-space: nowrap;
  padding-bottom: 8px;
}

.section-more:hover {
  color: var(--text-primary);
}

.news-grid {
  display: grid;
  grid-template-columns: 4fr 6fr;
  gap: 24px;
}

.news-feature {
  display: block;
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
}

.news-feature:hover {
  border-color: rgba(34, 211, 238, 0.40);
  box-shadow: var(--glow-cyan);
  transform: translateY(-2px);
}

.news-feature-cover {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.04);
}

.news-feature-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.news-feature:hover .news-feature-cover img {
  transform: scale(1.03);
}

.news-feature-body {
  padding: 24px;
}

.news-feature-body h3 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
  margin: 12px 0 10px;
}

.news-feature-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-date {
  display: inline-block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 16px;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.news-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: all 0.3s ease;
}

.news-item:hover {
  background: rgba(255, 255, 255, 0.10);
  border-color: rgba(34, 211, 238, 0.35);
}

.news-item-content {
  flex: 1;
  min-width: 0;
}

.news-item-content h4 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  margin: 8px 0 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.news-item-content p {
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.news-item-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.news-item-meta .news-date {
  margin-top: 0;
}

.news-item-meta i {
  color: var(--accent-cyan);
  font-size: 14px;
}

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: rgba(29, 78, 216, 0.20);
  color: var(--brand-blue-light);
  border: 1px solid rgba(29, 78, 216, 0.25);
}

.badge-cyan {
  background: rgba(34, 211, 238, 0.12);
  color: var(--accent-cyan);
  border-color: rgba(34, 211, 238, 0.25);
}

.empty-card {
  grid-column: 1 / -1;
  text-align: center;
  padding: 80px 32px;
  background: var(--card-bg);
  border: 1px dashed rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  font-size: 15px;
  backdrop-filter: blur(20px);
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg-deep);
}

.faq-list {
  max-width: 820px;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item.active {
  border-color: rgba(34, 211, 238, 0.35);
  box-shadow: var(--glow-cyan);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
}

.faq-question i {
  font-size: 15px;
  color: var(--accent-cyan);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-question i {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
  border-left: 2px solid var(--accent-cyan);
  margin-left: 24px;
}

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

.faq-answer p {
  padding: 0 24px 20px 16px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
}

/* ===== CTA Form ===== */
.cta-section {
  position: relative;
  padding: 80px 0;
  background: var(--bg-section);
}

.cta-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
}

.cta-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  padding: 48px;
  backdrop-filter: blur(20px);
}

.cta-info h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
}

.cta-info p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
  margin-bottom: 32px;
}

.cta-contact {
  list-style: none;
}

.cta-contact li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  font-size: 15px;
  color: var(--text-secondary);
}

.cta-contact li i {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(34, 211, 238, 0.10);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  flex-shrink: 0;
}

.cta-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.form-tip {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.cta-form input,
.cta-form select,
.cta-form textarea {
  background: rgba(10, 22, 40, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 15px;
  color: var(--text-primary);
  transition: all 0.3s ease;
  width: 100%;
}

.cta-form textarea {
  min-height: 100px;
  resize: vertical;
}

.cta-form input::placeholder,
.cta-form textarea::placeholder {
  color: rgba(159, 179, 209, 0.6);
}

.cta-form select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' fill='%239FB3D1'%3E%3Cpath d='M6 8.5 1.5 4h9z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  cursor: pointer;
}

.cta-form select option {
  background: var(--bg-deep);
  color: var(--text-primary);
}

.cta-form input:focus,
.cta-form select:focus,
.cta-form textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15);
}

/* ===== Footer ===== */
.footer {
  background: rgba(6, 14, 26, 0.95);
  padding: 64px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer::before {
  content: "";
  display: block;
  height: 1px;
  background: linear-gradient(90deg, var(--accent-cyan), transparent);
  margin-bottom: 48px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin: 16px 0 20px;
  max-width: 280px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 15px;
  transition: all 0.3s ease;
}

.footer-social a:hover {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.footer-col a {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  color: var(--text-secondary);
}

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

.footer-col p {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 6px 0;
}

.footer-bottom {
  padding: 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(159, 179, 209, 0.6);
}

/* ===== Responsive ===== */
@media (max-width: 1280px) {
  .container {
    padding-left: 24px;
    padding-right: 24px;
  }
}

@media (max-width: 1024px) {
  .main-nav,
  .header-actions .search-box,
  .header-actions .login-link {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero {
    padding: 120px 0 60px;
    min-height: auto;
  }

  .metric-panel {
    max-width: 480px;
  }

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

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

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

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

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

  .cta-wrap {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }

  .section-head h2 {
    font-size: 26px;
  }

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

  .hero-subtitle {
    font-size: 15px;
  }

  .hero-badges {
    gap: 12px;
    flex-direction: column;
  }

  .metric-value {
    font-size: 24px;
  }

  .metric-item:first-child .metric-value {
    font-size: 30px;
  }

  .service-card {
    flex-direction: column;
  }

  .service-thumb {
    width: 100%;
    height: 120px;
  }

  .compare-card {
    padding: 24px;
  }

  .bar-label {
    width: 90px;
    font-size: 12px;
  }

  .bar-value {
    width: 70px;
    font-size: 13px;
  }

  .news-feature-body h3 {
    font-size: 18px;
  }

  .news-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .news-item-meta {
    width: 100%;
    justify-content: space-between;
  }

  .cta-wrap {
    padding: 28px 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
}

@media (max-width: 520px) {
  .trust-grid {
    grid-template-columns: 1fr;
  }

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

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

  .bar-row {
    flex-wrap: wrap;
    gap: 8px;
  }

  .bar-label {
    width: 100%;
  }

  .bar-value {
    width: auto;
  }
}

/* roulang page: category1 */
:root {
            --bg-dark: #0a1628;
            --bg-secondary: #0e1f36;
            --bg-card: rgba(255, 255, 255, 0.06);
            --border-glass: rgba(255, 255, 255, 0.10);
            --brand-blue: #1d4ed8;
            --accent-cyan: #22d3ee;
            --accent-purple: #7c3aed;
            --text-primary: #f1f5f9;
            --text-secondary: #94a3b8;
            --radius-lg: 16px;
            --radius-md: 12px;
            --shadow-glow: 0 0 20px rgba(29, 78, 216, 0.45);
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            --font-mono: 'Roboto Mono', 'Inter', monospace;
        }

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

        body {
            font-family: var(--font-cn);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color .3s ease;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            outline: none;
            border: none;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

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

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 72px;
            background: rgba(10, 22, 40, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: box-shadow .3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

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

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, rgba(29, 78, 216, 0.3), rgba(34, 211, 238, 0.15));
            border: 1px solid rgba(34, 211, 238, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 18px;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
            line-height: 1.2;
            white-space: nowrap;
        }

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

        .brand-accent {
            color: var(--accent-cyan);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0 auto;
        }

        .main-nav a {
            position: relative;
            padding: 8px 18px;
            font-size: 15px;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: color .3s, background .3s;
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }

        .main-nav a.active {
            color: var(--accent-cyan);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 2px;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-cyan), transparent);
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(34, 211, 238, 0.6);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .header-search {
            position: relative;
        }

        .header-search input {
            width: 180px;
            height: 38px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            padding: 0 38px 0 14px;
            font-size: 13px;
            color: var(--text-primary);
            transition: border-color .3s, box-shadow .3s, width .3s ease;
        }

        .header-search input::placeholder {
            color: rgba(148, 163, 184, 0.7);
        }

        .header-search input:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15);
            width: 220px;
        }

        .header-search i {
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-secondary);
            font-size: 13px;
            pointer-events: none;
        }

        .header-login {
            font-size: 14px;
            color: var(--text-secondary);
            padding: 6px 10px;
            border-radius: 8px;
            transition: color .3s;
        }

        .header-login:hover {
            color: var(--text-primary);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            height: 38px;
            padding: 0 20px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--brand-blue), #3b82f6);
            color: #fff;
            font-size: 14px;
            font-weight: 500;
            box-shadow: var(--shadow-glow);
            transition: all .3s ease;
            cursor: pointer;
            white-space: nowrap;
            border: none;
        }

        .btn-primary:hover {
            box-shadow: 0 0 30px rgba(29, 78, 216, 0.65);
            transform: translateY(-1px);
            filter: brightness(1.05);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 12px rgba(29, 78, 216, 0.4);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            height: 38px;
            padding: 0 20px;
            border-radius: 10px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-primary);
            font-size: 14px;
            cursor: pointer;
            transition: all .3s ease;
            white-space: nowrap;
        }

        .btn-ghost:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(34, 211, 238, 0.15);
        }

        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            cursor: pointer;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
        }

        .hamburger span {
            width: 18px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all .3s ease;
        }

        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            z-index: 99;
            background: rgba(10, 22, 40, 0.97);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 16px 24px 24px;
            flex-direction: column;
            gap: 8px;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
        }

        .mobile-menu.show {
            display: flex;
        }

        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            border-radius: 10px;
            color: var(--text-secondary);
            font-size: 16px;
            transition: all .3s;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent-cyan);
            background: rgba(34, 211, 238, 0.08);
        }

        .mobile-menu .btn-primary {
            margin-top: 12px;
            justify-content: center;
            height: 44px;
        }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            padding: 152px 0 88px;
            overflow: hidden;
            background: radial-gradient(ellipse at 30% 20%, rgba(29, 78, 216, 0.28), transparent 60%),
                radial-gradient(ellipse at 80% 80%, rgba(34, 211, 238, 0.12), transparent 50%),
                var(--bg-dark);
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            pointer-events: none;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, var(--bg-dark) 0%, transparent 50%, var(--bg-dark) 100%);
            pointer-events: none;
        }

        .hero-circuit {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            pointer-events: none;
            /* 电路板走线网格 */
            background-image:
                linear-gradient(rgba(34, 211, 238, 0.06) 1px, transparent 1px),
                linear-gradient(90deg, rgba(34, 211, 238, 0.06) 1px, transparent 1px);
            background-size: 44px 44px;
            mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
            -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            transition: color .3s;
        }

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

        .breadcrumb i {
            font-size: 10px;
            color: rgba(148, 163, 184, 0.5);
        }

        .breadcrumb .current {
            color: var(--text-primary);
            font-weight: 500;
        }

        .hero-content h1 {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.25;
            background: linear-gradient(90deg, #f1f5f9, #93c5fd);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 18px;
            letter-spacing: 1px;
        }

        .hero-content .hero-sub {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 620px;
        }

        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }

        .hero-btns .btn-primary {
            height: 46px;
            padding: 0 28px;
            font-size: 15px;
            border-radius: 12px;
        }

        .hero-btns .btn-ghost {
            height: 46px;
            padding: 0 28px;
            font-size: 15px;
            border-radius: 12px;
        }

        .hero-trust {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(148, 163, 184, 0.8);
        }

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

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

        /* ===== Stats ===== */
        .stats-section {
            position: relative;
            padding: 80px 0;
            background: var(--bg-secondary);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 24px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            backdrop-filter: blur(20px);
            position: relative;
            transition: all .3s ease;
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(34, 211, 238, 0.3);
            box-shadow: 0 0 24px rgba(34, 211, 238, 0.1);
        }

        .stat-card .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }

        .stat-card .stat-value {
            font-family: var(--font-mono);
            font-size: 30px;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.2;
        }

        .stat-card .stat-trend {
            margin-top: 8px;
            font-size: 12px;
            color: #10b981;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .stat-card.large {
            background: linear-gradient(135deg, rgba(29, 78, 216, 0.2), rgba(255, 255, 255, 0.04));
            border: 1px solid rgba(34, 211, 238, 0.2);
        }

        .stat-card.large .stat-value {
            font-size: 36px;
            color: var(--accent-cyan);
        }

        /* ===== Features ===== */
        .features-section {
            position: relative;
            padding: 100px 0;
            background: var(--bg-dark);
        }

        .section-header {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 48px;
        }

        .section-header::before {
            content: '';
            width: 4px;
            height: 28px;
            border-radius: 2px;
            background: linear-gradient(to bottom, var(--accent-cyan), transparent);
        }

        .section-header h2 {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text-primary);
        }

        .section-header .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        .features-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 32px;
            display: flex;
            gap: 20px;
            backdrop-filter: blur(20px);
            transition: all .3s ease;
        }

        .feature-card:hover {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(34, 211, 238, 0.35);
            box-shadow: 0 8px 32px rgba(34, 211, 238, 0.08);
            transform: translateY(-2px);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 6px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent-cyan);
            background-color: rgba(34, 211, 238, 0.08);
            background-image: repeating-linear-gradient(45deg, rgba(34, 211, 238, 0.15) 0, rgba(34, 211, 238, 0.15) 1px, transparent 1px, transparent 8px);
            background-size: 8px 8px;
            border: 1px solid rgba(34, 211, 238, 0.3);
        }

        .feature-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .feature-body p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .feature-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: 12px;
            font-size: 13px;
            color: var(--accent-cyan);
            transition: gap .3s ease;
        }

        .feature-link:hover {
            gap: 8px;
        }

        /* ===== Scenarios ===== */
        .scenarios-section {
            position: relative;
            padding: 100px 0;
            background: var(--bg-secondary);
        }

        .scenarios-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: start;
        }

        .scenario-featured {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all .3s ease;
        }

        .scenario-featured:hover {
            border-color: rgba(34, 211, 238, 0.3);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
        }

        .scenario-featured .cover-wrap {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
        }

        .scenario-featured .cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .scenario-featured:hover .cover-wrap img {
            transform: scale(1.04);
        }

        .scenario-featured .badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(29, 78, 216, 0.85);
            backdrop-filter: blur(8px);
            color: #fff;
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 999px;
        }

        .scenario-featured .content {
            padding: 24px;
        }

        .scenario-featured h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .scenario-featured p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .scenarios-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .scenario-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all .3s ease;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .scenario-card:hover {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(34, 211, 238, 0.25);
            transform: translateY(-2px);
        }

        .scenario-card .thumb {
            aspect-ratio: 16/9;
            border-radius: 8px;
            overflow: hidden;
            background: rgba(255, 255, 255, 0.04);
        }

        .scenario-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .scenario-card:hover .thumb img {
            transform: scale(1.05);
        }

        .scenario-card h4 {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-primary);
            line-height: 1.4;
        }

        .scenario-card .meta {
            font-size: 12px;
            color: rgba(148, 163, 184, 0.7);
        }

        /* ===== Process ===== */
        .process-section {
            position: relative;
            padding: 100px 0 80px;
            background: var(--bg-dark);
        }

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

        .process-step {
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            transition: all .3s ease;
        }

        .process-step:hover {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(34, 211, 238, 0.25);
            transform: translateY(-4px);
        }

        .process-step .step-num {
            font-family: var(--font-mono);
            font-size: 14px;
            color: var(--accent-cyan);
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.25);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-weight: 700;
        }

        .process-step h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .process-step::after {
            content: '\f054';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: -16px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 11px;
            color: rgba(34, 211, 238, 0.4);
            z-index: 2;
            pointer-events: none;
        }

        .process-step:last-child::after {
            display: none;
        }

        /* ===== CTA Banner ===== */
        .cta-banner {
            position: relative;
            padding: 28px 0;
            background: linear-gradient(90deg, rgba(29, 78, 216, 0.25), rgba(34, 211, 238, 0.12));
            border-top: 1px solid rgba(34, 211, 238, 0.2);
            border-bottom: 1px solid rgba(34, 211, 238, 0.1);
            overflow: hidden;
        }

        .cta-banner .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .cta-banner p {
            font-size: 18px;
            font-weight: 500;
            color: var(--text-primary);
        }

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

        .cta-banner .btn-primary {
            height: 42px;
            padding: 0 28px;
            font-size: 15px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            position: relative;
            padding: 100px 0;
            background: var(--bg-dark);
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all .3s ease;
        }

        .faq-item:hover {
            border-color: rgba(34, 211, 238, 0.25);
        }

        .faq-item.open {
            border-color: rgba(34, 211, 238, 0.4);
            background: rgba(255, 255, 255, 0.08);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-primary);
            user-select: none;
            transition: color .3s;
        }

        .faq-question h3 {
            font-size: 16px;
            font-weight: 500;
            color: inherit;
        }

        .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: rgba(34, 211, 238, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 14px;
            transition: transform .4s ease, background .3s;
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(34, 211, 238, 0.25);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease, padding .4s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        .faq-answer-inner {
            border-left: 2px solid var(--accent-cyan);
            padding-left: 16px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.75;
        }

        /* ===== Footer ===== */
        .footer {
            position: relative;
            background: #081120;
            padding: 64px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, var(--accent-cyan), transparent 60%);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }

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

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 320px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-glass);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 14px;
            transition: all .3s ease;
        }

        .footer-social a:hover {
            background: rgba(34, 211, 238, 0.15);
            border-color: rgba(34, 211, 238, 0.4);
            color: var(--accent-cyan);
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 5px 0;
            transition: color .3s, padding-left .3s;
        }

        .footer-col a:hover {
            color: var(--accent-cyan);
            padding-left: 4px;
        }

        .footer-col p {
            font-size: 14px;
            color: var(--text-secondary);
            padding: 4px 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(148, 163, 184, 0.6);
        }

        /* ===== Decorative dots ===== */
        .glow-dot {
            position: absolute;
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.6);
            animation: pulseDot 2.5s ease-in-out infinite;
            pointer-events: none;
        }

        @keyframes pulseDot {
            0%,
            100% {
                opacity: 0.4;
                transform: scale(1);
            }
            50% {
                opacity: 1;
                transform: scale(1.4);
            }
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }

            .stat-card.large {
                grid-column: span 1;
            }

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

            .process-step:nth-child(2)::after {
                display: none;
            }

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

            .scenarios-layout {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }

            .site-header {
                height: 64px;
            }

            .header-inner {
                height: 64px;
            }

            .main-nav,
            .header-search,
            .header-login {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .category-hero {
                padding: 116px 0 64px;
            }

            .hero-content h1 {
                font-size: 28px;
            }

            .hero-content .hero-sub {
                font-size: 15px;
            }

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

            .scenarios-list {
                grid-template-columns: 1fr;
            }

            .section-header h2 {
                font-size: 22px;
            }

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

            .process-step::after {
                display: none;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .cta-banner .container {
                flex-direction: column;
                text-align: center;
            }

            .faq-question {
                padding: 16px;
                font-size: 15px;
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }

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

            .hero-btns .btn-primary,
            .hero-btns .btn-ghost {
                width: 100%;
                justify-content: center;
            }
        }

        /* Focus accessibility */
        a:focus,
        button:focus,
        input:focus {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 2px;
            border-radius: 4px;
        }

/* roulang page: article */
:root {
  --bg-base: #0A1628;
  --bg-panel: #0E1F36;
  --bg-card: rgba(255,255,255,0.06);
  --border-card: rgba(255,255,255,0.10);
  --brand-blue: #1D4ED8;
  --accent-cyan: #22D3EE;
  --accent-purple: #7C3AED;
  --text-main: #E6EDF6;
  --text-sub: #9AAEC5;
  --text-muted: #6B7C94;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-glow: 0 0 20px rgba(29,78,216,0.45);
  --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-mono: "Roboto Mono", "SF Mono", Consolas, monospace;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--bg-base);
  color: var(--text-main);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse at 70% 20%, rgba(29,78,216,0.12), transparent 60%),
    radial-gradient(ellipse at 20% 80%, rgba(34,211,238,0.06), transparent 50%);
}
.page-grid-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}
a {
  color: var(--text-main);
  text-decoration: none;
  transition: color 0.3s;
}
a:hover { color: var(--accent-cyan); }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button, input, textarea, select { font-family: inherit; font-size: 100%; }
input:focus, textarea:focus, select:focus, button:focus { outline: none; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.3s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--brand-blue);
  color: #fff;
  box-shadow: 0 0 20px rgba(29,78,216,0.45);
}
.btn-primary:hover {
  background: #2563EB;
  box-shadow: 0 0 32px rgba(29,78,216,0.65);
  color: #fff;
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--text-main);
  border: 1px solid rgba(255,255,255,0.2);
}
.btn-ghost:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-1px);
}
.btn-sm { height: 36px; padding: 0 16px; font-size: 14px; border-radius: 10px; }

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 72px;
  background: rgba(10,22,40,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-card);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(34,211,238,0.2), rgba(29,78,216,0.2));
  border: 1px solid rgba(34,211,238,0.4);
  border-radius: 10px;
  color: var(--accent-cyan);
  font-size: 18px;
  box-shadow: 0 0 12px rgba(34,211,238,0.2);
}
.logo-text {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.brand-primary { color: var(--text-main); }
.brand-accent { color: var(--accent-cyan); }
.main-nav { display: flex; gap: 8px; align-items: center; }
.main-nav a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 15px;
  color: var(--text-sub);
  font-weight: 500;
  position: relative;
  transition: all 0.3s;
}
.main-nav a:hover { color: var(--accent-cyan); }
.main-nav a.active { color: var(--accent-cyan); }
.main-nav a.active::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: -12px;
  height: 2px;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  border-radius: 2px;
}
.header-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-card);
  border-radius: 10px;
  padding: 6px 12px;
  width: 200px;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.search-box i { color: var(--text-muted); font-size: 13px; }
.search-box input {
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 13px;
  width: 100%;
}
.search-box input::placeholder { color: var(--text-muted); }
.search-box:focus-within {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(34,211,238,0.15);
}
.login-link { font-size: 14px; color: var(--text-sub); }
.login-link:hover { color: var(--accent-cyan); }
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 22px;
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
}
.mobile-toggle:hover { background: rgba(255,255,255,0.06); }
.mobile-drawer {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(10,22,40,0.98);
  border-bottom: 1px solid var(--border-card);
  padding: 24px;
  transform: translateY(-120%);
  transition: transform 0.35s ease;
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
}
.mobile-drawer.open { transform: translateY(0); }
.mobile-drawer .main-nav { display: flex; flex-direction: column; gap: 4px; }
.mobile-drawer .main-nav a { padding: 12px 16px; font-size: 16px; }
.mobile-drawer .main-nav a.active::after { display: none; }
.mobile-drawer .header-actions {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 12px;
  margin-top: 16px;
}
.mobile-drawer .search-box { display: flex; width: 100%; }
.mobile-drawer .login-link {
  display: block;
  text-align: center;
  padding: 10px;
  background: rgba(255,255,255,0.06);
  border-radius: 10px;
}

.article-main { min-height: 70vh; }
.breadcrumb-wrap {
  padding: 112px 0 24px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent-cyan); }
.breadcrumb .sep { opacity: 0.5; }
.breadcrumb .current {
  color: var(--text-sub);
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.breadcrumb .category-badge {
  color: var(--accent-cyan);
  background: rgba(34,211,238,0.12);
  padding: 2px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.article-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px 48px;
}
.article-header {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-bottom: 32px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}
.article-header h1 {
  font-size: 34px;
  line-height: 1.3;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-main);
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  color: var(--text-sub);
  font-size: 14px;
  margin-bottom: 24px;
}
.article-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}
.article-meta .meta-item i { color: var(--accent-cyan); font-size: 13px; }
.article-cover {
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: rgba(255,255,255,0.03);
}
.article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-body {
  max-width: 760px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.85;
  color: #C7D3E3;
}
.article-body p { margin-bottom: 24px; }
.article-body h2 {
  font-size: 26px;
  margin: 40px 0 16px;
  color: var(--text-main);
  line-height: 1.35;
  font-weight: 700;
}
.article-body h3 {
  font-size: 20px;
  margin: 32px 0 12px;
  color: var(--text-main);
  line-height: 1.4;
  font-weight: 600;
}
.article-body ul { margin-bottom: 24px; }
.article-body ul li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 10px;
}
.article-body ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
}
.article-body ol {
  counter-reset: article-ol;
  margin-bottom: 24px;
}
.article-body ol li {
  counter-increment: article-ol;
  position: relative;
  padding-left: 36px;
  margin-bottom: 10px;
}
.article-body ol li::before {
  content: counter(article-ol);
  position: absolute;
  left: 0;
  top: 2px;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: rgba(34,211,238,0.15);
  color: var(--accent-cyan);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.article-body blockquote {
  border-left: 3px solid var(--accent-cyan);
  background: rgba(34,211,238,0.06);
  padding: 16px 20px;
  border-radius: 0 12px 12px 0;
  margin-bottom: 24px;
  font-style: italic;
  color: var(--text-sub);
}
.article-body img { border-radius: var(--radius-md); margin: 24px 0; }
.article-body figure { margin: 24px 0; }
.article-body figcaption {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 8px;
}
.article-body a {
  color: var(--accent-cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.article-body a:hover { color: #67E8F9; }
.article-body code {
  background: rgba(255,255,255,0.07);
  padding: 3px 8px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 14px;
}
.article-body pre {
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 20px;
  overflow-x: auto;
  margin-bottom: 24px;
}
.article-body pre code { background: none; padding: 0; }

.not-found {
  text-align: center;
  padding: 80px 20px;
}
.not-found i {
  font-size: 48px;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.not-found p {
  font-size: 20px;
  color: var(--text-sub);
  margin-bottom: 24px;
}

.article-footer {
  max-width: 760px;
  margin: 48px auto 0;
  border-top: 1px solid var(--border-card);
  padding-top: 32px;
}
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
}
.tag-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(29,78,216,0.15);
  color: #A5C0E8;
  border: 1px solid rgba(29,78,216,0.3);
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 13px;
  transition: all 0.3s;
}
.tag-badge:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }
.tag-badge i { color: var(--accent-cyan); font-size: 11px; }
.article-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.related-section {
  background: var(--bg-panel);
  padding: 60px 0;
  border-top: 1px solid var(--border-card);
}
.related-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}
.related-header h2 {
  font-size: 26px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 12px;
}
.title-bar {
  display: inline-block;
  width: 4px;
  height: 22px;
  border-radius: 2px;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px rgba(34,211,238,0.6);
}
.related-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-muted);
  padding: 48px 32px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px dashed rgba(255,255,255,0.12);
  font-size: 15px;
}
.related-empty i { color: var(--accent-cyan); opacity: 0.6; font-size: 22px; }

.cta-banner {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(29,78,216,0.3), rgba(34,211,238,0.12)), var(--bg-panel);
  border-top: 1px solid var(--accent-cyan);
}
.cta-banner::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(34,211,238,0.08);
  filter: blur(60px);
  top: -120px;
  right: -80px;
  pointer-events: none;
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 48px 24px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}
.cta-copy h2 {
  font-size: 24px;
  margin-bottom: 8px;
  font-weight: 700;
}
.cta-copy p {
  color: var(--text-sub);
  max-width: 640px;
  font-size: 15px;
}

.footer {
  background: rgba(10,22,40,0.9);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 60px 0 0;
}
.footer-top-line {
  height: 1px;
  background: linear-gradient(90deg, var(--accent-cyan), transparent);
  margin-bottom: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p {
  color: var(--text-sub);
  font-size: 14px;
  margin: 16px 0;
  max-width: 320px;
  line-height: 1.75;
}
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-sub);
  transition: all 0.3s;
}
.footer-social a:hover {
  color: var(--accent-cyan);
  background: rgba(34,211,238,0.1);
  transform: translateY(-2px);
}
.footer-col h4 {
  font-size: 17px;
  margin-bottom: 16px;
  color: var(--text-main);
  font-weight: 600;
}
.footer-col a {
  display: block;
  color: var(--text-sub);
  font-size: 14px;
  padding: 6px 0;
}
.footer-col a:hover { color: var(--accent-cyan); }
.footer-col p {
  color: var(--text-sub);
  font-size: 14px;
  padding: 6px 0;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 20px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

@media (max-width: 1024px) {
  .site-header .main-nav { display: none; }
  .site-header .header-actions { display: none; }
  .mobile-toggle { display: flex; }
  .mobile-drawer { display: block; }
}

@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .article-header { padding: 24px; }
  .article-header h1 { font-size: 26px; }
  .article-body { font-size: 15px; }
  .article-body h2 { font-size: 22px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cta-inner { padding: 40px 16px; }
  .cta-copy h2 { font-size: 20px; }
  .breadcrumb-wrap { padding: 96px 0 16px; }
}

@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; }
  .article-nav { flex-direction: column; align-items: stretch; }
  .article-nav .btn { width: 100%; }
  .article-meta { gap: 10px; }
  .related-header h2 { font-size: 22px; }
  .breadcrumb .current { max-width: 180px; }
  .article-header { padding: 20px 16px; }
}

/* roulang page: category2 */
:root{
  --bg-primary:#0A1628;
  --bg-secondary:#0E1F36;
  --brand-blue:#1D4ED8;
  --accent-cyan:#22D3EE;
  --accent-purple:#7C3AED;
  --text-primary:#F1F5F9;
  --text-secondary:#94A3B8;
  --border-light:rgba(255,255,255,0.10);
  --card-bg:rgba(255,255,255,0.06);
  --radius-lg:16px;
  --radius-md:12px;
  --shadow-glow:0 0 20px rgba(29,78,216,0.45);
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:'PingFang SC','Microsoft YaHei','Noto Sans CJK SC',sans-serif;
  background:var(--bg-primary);
  color:var(--text-primary);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit;transition:all .3s ease;}
img{max-width:100%;display:block;}
button{font-family:inherit;border:none;background:none;cursor:pointer;}
input,select,textarea{font-family:inherit;outline:none;}
.container{max-width:1280px;margin:0 auto;padding:0 24px;}
@media(max-width:768px){.container{padding:0 16px;}}

/* Header */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(10,22,40,0.85);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(255,255,255,0.08);
  height:72px;
}
.header-inner{
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-icon{
  width:36px;height:36px;border-radius:8px;
  background:linear-gradient(135deg,rgba(34,211,238,0.15),rgba(29,78,216,0.25));
  display:flex;align-items:center;justify-content:center;
  color:var(--accent-cyan);font-size:16px;
}
.logo-text{
  font-size:18px;font-weight:700;letter-spacing:0.5px;
  display:flex;align-items:baseline;gap:2px;
}
.brand-primary{color:#fff;}
.brand-accent{color:var(--accent-cyan);font-weight:500;}
.main-nav{display:flex;align-items:center;gap:6px;flex:1;justify-content:center;}
.main-nav a{
  padding:8px 14px;border-radius:8px;font-size:15px;color:var(--text-secondary);
  font-weight:500;position:relative;
  white-space:nowrap;
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,0.05);}
.main-nav a.active{
  color:var(--accent-cyan);
}
.main-nav a.active::after{
  content:'';position:absolute;bottom:2px;left:14px;right:14px;height:2px;
  background:var(--accent-cyan);border-radius:2px;
  box-shadow:0 0 8px rgba(34,211,238,0.6);
}
.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,0.08);
  border:1px solid rgba(255,255,255,0.10);
  border-radius:10px;padding:0 12px;height:38px;width:200px;
  transition:all .3s ease;
}
.search-box input{
  background:transparent;border:none;color:#fff;font-size:13px;width:100%;
}
.search-box input::placeholder{color:rgba(255,255,255,0.4);}
.search-box:focus-within{
  border-color:var(--accent-cyan);
  box-shadow:0 0 0 3px rgba(34,211,238,0.15);
}
.search-box i{color:var(--text-secondary);font-size:13px;}
.login-link{font-size:14px;color:var(--text-secondary);white-space:nowrap;}
.login-link:hover{color:var(--accent-cyan);}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--radius-md);
  background:var(--brand-blue);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 0 20px rgba(29,78,216,0.45);
  transition:all .3s ease;border:none;cursor:pointer;white-space:nowrap;
}
.btn-primary:hover{
  background:#2563eb;color:#fff;
  box-shadow:0 0 32px rgba(29,78,216,0.65);
  transform:translateY(-2px);
}
.btn-primary.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--radius-md);
  background:transparent;color:#fff;font-size:15px;font-weight:500;
  border:1px solid rgba(255,255,255,0.25);
  transition:all .3s ease;
}
.btn-ghost:hover{border-color:var(--accent-cyan);color:var(--accent-cyan);transform:translateY(-2px);}
.mobile-toggle{display:none;font-size:22px;color:#fff;background:none;border:none;cursor:pointer;}
.mobile-menu{
  display:none;flex-direction:column;padding:16px;gap:4px;
  background:rgba(10,22,40,0.97);border-bottom:1px solid rgba(255,255,255,0.08);
}
.mobile-menu.open{display:flex;}
.mobile-menu a{
  padding:12px 16px;border-radius:8px;color:var(--text-secondary);font-size:15px;
}
.mobile-menu a:hover{color:#fff;background:rgba(255,255,255,0.05);}
.mobile-menu a.active{color:var(--accent-cyan);}

/* Hero */
.hero-section{
  padding:140px 0 80px;position:relative;overflow:hidden;
  background:linear-gradient(135deg,#0A1628 0%,#0E1F36 50%,#12294d 100%);
}
.hero-section::before{
  content:'';position:absolute;top:0;left:0;right:0;bottom:0;
  background-image:
    linear-gradient(rgba(34,211,238,0.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(34,211,238,0.05) 1px,transparent 1px);
  background-size:40px 40px;
  mask-image:radial-gradient(ellipse at center,black 40%,transparent 90%);
  -webkit-mask-image:radial-gradient(ellipse at center,black 40%,transparent 90%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;text-align:center;max-width:880px;margin:0 auto;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(34,211,238,0.12);border:1px solid rgba(34,211,238,0.3);
  color:var(--accent-cyan);font-size:13px;font-weight:600;
  padding:6px 16px;border-radius:100px;margin-bottom:24px;
  letter-spacing:1px;
}
.hero-section h1{
  font-size:40px;font-weight:700;line-height:1.25;margin-bottom:20px;
  color:#fff;letter-spacing:1px;
}
.hero-section h1 span{color:var(--accent-cyan);}
.hero-subtitle{
  font-size:17px;color:var(--text-secondary);line-height:1.75;
  max-width:640px;margin:0 auto 32px;
}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:40px;}
.hero-trust{
  display:flex;gap:30px;justify-content:center;flex-wrap:wrap;
  font-size:13px;color:var(--text-secondary);
}
.hero-trust span{display:flex;align-items:center;gap:6px;}
.hero-trust i{color:var(--accent-cyan);font-size:14px;}

/* Category Desc */
.category-desc{
  padding:64px 0;background:rgba(14,31,54,0.4);
  border-top:1px solid rgba(255,255,255,0.05);
  border-bottom:1px solid rgba(255,255,255,0.05);
}
.desc-banner{
  position:relative;border-radius:20px;overflow:hidden;
  min-height:260px;display:flex;align-items:center;
  background:linear-gradient(90deg,rgba(10,22,40,0.96) 0%,rgba(10,22,40,0.75) 100%);
  isolation:isolate;
}
.desc-banner img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-1;
}
.desc-content{padding:48px;max-width:66%;}
.desc-content h2{
  font-size:26px;font-weight:700;color:#fff;margin-bottom:16px;
  display:flex;align-items:center;gap:12px;
}
.desc-content h2::before{
  content:'';width:4px;height:26px;border-radius:2px;
  background:var(--accent-cyan);box-shadow:0 0 10px rgba(34,211,238,0.5);
}
.desc-content p{
  font-size:15px;line-height:1.8;color:var(--text-secondary);
  margin-bottom:14px;
}
.desc-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px;}
.desc-tags span{
  background:rgba(34,211,238,0.1);border:1px solid rgba(34,211,238,0.2);
  color:var(--accent-cyan);font-size:12px;padding:4px 12px;border-radius:100px;
}
@media(max-width:768px){
  .desc-content{max-width:100%;padding:32px 24px;}
  .hero-section{padding:110px 0 60px;}
  .hero-section h1{font-size:28px;}
  .hero-subtitle{font-size:15px;}
}

/* Section common */
.section{padding:70px 0;}
.section-head{margin-bottom:48px;text-align:center;max-width:720px;margin-left:auto;margin-right:auto;}
.section-head h2{
  font-size:28px;font-weight:700;color:#fff;margin-bottom:14px;line-height:1.35;
  display:flex;align-items:center;gap:12px;justify-content:center;
}
.section-head h2 .bar{
  width:4px;height:28px;border-radius:2px;
  background:var(--accent-cyan);box-shadow:0 0 10px rgba(34,211,238,0.5);
}
.section-head p{color:var(--text-secondary);font-size:15px;line-height:1.7;}

/* Service Feature */
.service-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.service-card{
  background:var(--card-bg);
  border:1px solid var(--border-light);
  border-radius:var(--radius-lg);
  padding:32px;display:flex;gap:24px;align-items:flex-start;
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  transition:all .35s ease;
  position:relative;overflow:hidden;
}
.service-card:hover{
  background:rgba(255,255,255,0.09);
  border-color:rgba(34,211,238,0.4);
  box-shadow:0 0 30px rgba(34,211,238,0.1);
  transform:translateY(-4px);
}
.service-icon{
  width:56px;height:56px;border-radius:12px;flex-shrink:0;
  background:
    repeating-linear-gradient(45deg,rgba(34,211,238,0.08) 0 2px,transparent 2px 4px),
    rgba(34,211,238,0.08);
  border:1px solid rgba(34,211,238,0.2);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent-cyan);font-size:20px;
  position:relative;
}
.service-card h3{font-size:18px;font-weight:600;color:#fff;margin-bottom:10px;}
.service-card p{font-size:14px;color:var(--text-secondary);line-height:1.7;margin-bottom:14px;}
.service-link{font-size:14px;color:var(--accent-cyan);font-weight:500;display:inline-flex;align-items:center;gap:6px;}
.service-link:hover{gap:10px;}
.service-link i{font-size:12px;}
@media(max-width:1024px){
  .service-grid{grid-template-columns:1fr;}
}
@media(max-width:640px){
  .service-card{flex-direction:column;padding:24px;}
  .section{padding:50px 0;}
  .section-head h2{font-size:24px;}
}

/* Content List */
.content-section{background:rgba(14,31,54,0.4);border-top:1px solid rgba(255,255,255,0.05);border-bottom:1px solid rgba(255,255,255,0.05);}
.list-layout{display:grid;grid-template-columns:1.1fr 1fr;gap:24px;}
.feature-card-l{
  background:var(--card-bg);border:1px solid var(--border-light);
  border-radius:var(--radius-lg);overflow:hidden;transition:all .35s ease;
  backdrop-filter:blur(20px);
  display:flex;flex-direction:column;
}
.feature-card-l:hover{transform:translateY(-4px);border-color:rgba(34,211,238,0.35);box-shadow:0 12px 40px rgba(0,0,0,0.3);}
.feature-card-l .thumb{aspect-ratio:16/9;overflow:hidden;position:relative;}
.feature-card-l .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.feature-card-l:hover .thumb img{transform:scale(1.04);}
.feature-card-l .info{padding:24px;}
.feature-card-l .meta{display:flex;gap:10px;align-items:center;margin-bottom:12px;}
.badge{display:inline-flex;align-items:center;padding:4px 12px;border-radius:100px;font-size:12px;font-weight:600;background:rgba(29,78,216,0.2);color:var(--accent-cyan);}
.badge-date{font-size:12px;color:var(--text-secondary);}
.feature-card-l h3{font-size:17px;font-weight:600;color:#fff;margin-bottom:10px;line-height:1.5;}
.feature-card-l p{font-size:14px;color:var(--text-secondary);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

.list-col{display:flex;flex-direction:column;gap:14px;}
.list-item{
  background:var(--card-bg);border:1px solid var(--border-light);border-radius:var(--radius-md);
  padding:16px;display:flex;gap:16px;align-items:center;transition:all .3s ease;
}
.list-item:hover{background:rgba(255,255,255,0.08);transform:translateX(4px);border-color:rgba(34,211,238,0.2);}
.list-item .thumb{width:120px;height:72px;border-radius:8px;overflow:hidden;flex-shrink:0;}
.list-item .thumb img{width:100%;height:100%;object-fit:cover;}
.list-item .body{flex:1;min-width:0;}
.list-item .body h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.list-item .body p{font-size:12px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:6px;}
.list-item .body .row{display:flex;gap:8px;align-items:center;}
.list-item .arrow{color:var(--text-secondary);flex-shrink:0;font-size:12px;}
.list-item:hover .arrow{color:var(--accent-cyan);}

.empty-state{
  grid-column:1/-1;text-align:center;padding:60px 24px;
  background:var(--card-bg);border:1px dashed rgba(255,255,255,0.15);
  border-radius:var(--radius-lg);color:var(--text-secondary);font-size:15px;
}
@media(max-width:1024px){
  .list-layout{grid-template-columns:1fr;}
}

/* Process */
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.process-item{
  text-align:center;padding:32px 20px;border-radius:var(--radius-lg);
  background:var(--card-bg);border:1px solid var(--border-light);
  transition:all .35s ease;position:relative;
}
.process-item:hover{transform:translateY(-4px);border-color:rgba(34,211,238,0.3);}
.process-num{
  width:44px;height:44px;border-radius:50%;margin:0 auto 16px;
  background:linear-gradient(135deg,rgba(29,78,216,0.6),rgba(34,211,238,0.5));
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;color:#fff;
  box-shadow:0 0 16px rgba(34,211,238,0.25);
}
.process-item h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:8px;}
.process-item p{font-size:13px;color:var(--text-secondary);line-height:1.6;}
@media(max-width:1024px){.process-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:640px){.process-grid{grid-template-columns:1fr;}}

/* FAQ */
.faq-section{background:rgba(14,31,54,0.4);border-top:1px solid rgba(255,255,255,0.05);border-bottom:1px solid rgba(255,255,255,0.05);}
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{
  background:var(--card-bg);border:1px solid var(--border-light);
  border-radius:var(--radius-md);margin-bottom:16px;overflow:hidden;
  transition:border-color .3s ease;
}
.faq-item.active{border-color:rgba(34,211,238,0.3);}
.faq-question{
  width:100%;padding:20px 24px;display:flex;align-items:center;justify-content:space-between;
  color:#fff;font-size:16px;font-weight:600;text-align:left;
  cursor:pointer;background:transparent;transition:all .3s ease;
}
.faq-question:hover{color:var(--accent-cyan);}
.faq-icon{
  width:28px;height:28px;border-radius:50%;flex-shrink:0;
  background:rgba(34,211,238,0.1);border:1px solid rgba(34,211,238,0.25);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent-cyan);font-size:14px;transition:transform .35s ease;
}
.faq-item.active .faq-icon{transform:rotate(45deg);}
.faq-answer{
  max-height:0;overflow:hidden;transition:max-height .4s ease;
}
.faq-item.active .faq-answer{max-height:300px;}
.faq-answer-inner{
  padding:0 24px 20px 24px;border-left:2px solid rgba(34,211,238,0.4);
  margin-left:24px;color:var(--text-secondary);font-size:14px;line-height:1.75;
}

/* CTA Banner */
.cta-banner{
  padding:50px 0;position:relative;
  background:linear-gradient(135deg,rgba(29,78,216,0.15) 0%,rgba(34,211,238,0.08) 100%);
}
.cta-inner{
  background:rgba(255,255,255,0.05);
  border:1px solid rgba(34,211,238,0.2);
  border-radius:var(--radius-lg);
  padding:36px 40px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  flex-wrap:wrap;
}
.cta-inner h3{font-size:22px;font-weight:700;color:#fff;margin-bottom:6px;}
.cta-inner p{font-size:14px;color:var(--text-secondary);}
@media(max-width:640px){
  .cta-inner{padding:28px 20px;flex-direction:column;text-align:center;}
}

/* Footer */
.site-footer{
  background:rgba(8,16,30,0.98);
  border-top:1px solid rgba(255,255,255,0.06);
  padding-top:60px;position:relative;
}
.site-footer::before{
  content:'';position:absolute;top:0;left:0;width:60%;height:1px;
  background:linear-gradient(90deg,var(--accent-cyan),transparent);
}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:48px;
}
.footer-brand p{color:var(--text-secondary);font-size:14px;line-height:1.7;margin-top:16px;margin-bottom:20px;max-width:320px;}
.footer-social{display:flex;gap:12px;}
.footer-social a{
  width:36px;height:36px;border-radius:10px;
  background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.08);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-secondary);font-size:15px;
}
.footer-social a:hover{color:var(--accent-cyan);border-color:var(--accent-cyan);background:rgba(34,211,238,0.08);}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:20px;font-weight:600;}
.footer-col a{
  display:block;color:var(--text-secondary);font-size:14px;padding:5px 0;
  transition:all .3s ease;
}
.footer-col a:hover{color:var(--accent-cyan);padding-left:6px;}
.footer-col p{color:var(--text-secondary);font-size:14px;padding:5px 0;line-height:1.8;}
.footer-bottom{
  padding:24px 0;border-top:1px solid rgba(255,255,255,0.05);
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;
}
.footer-bottom p{color:rgba(255,255,255,0.45);font-size:13px;}
@media(max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media(max-width:640px){
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;text-align:center;}
}

/* Scrollbar */
::-webkit-scrollbar{width:8px;height:8px;}
::-webkit-scrollbar-track{background:var(--bg-primary);}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.15);border-radius:4px;}
::-webkit-scrollbar-thumb:hover{background:rgba(34,211,238,0.3);}

@media(max-width:1080px){
  .main-nav{display:none;}
  .header-actions .search-box{display:none;}
  .header-actions .login-link{display:none;}
  .mobile-toggle{display:block;}
}

/* roulang page: category3 */
:root{
--bg-deep:#0A1628;
--bg-panel:#0E1F36;
--brand-blue:#1D4ED8;
--cyan:#22D3EE;
--purple:#7C3AED;
--text:#E2E8F0;
--muted:#94A3B8;
--border:rgba(255,255,255,0.10);
--card-bg:rgba(255,255,255,0.06);
--radius:16px;
--shadow:0 8px 32px rgba(0,0,0,0.30);
--glow-blue:0 0 20px rgba(29,78,216,0.45);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
background:var(--bg-deep);
color:var(--text);
line-height:1.6;
-webkit-font-smoothing:antialiased;
min-height:100vh;
}
a{text-decoration:none;color:var(--text);transition:color .25s ease}
img{max-width:100%;display:block}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none}
input,textarea,select{font-family:inherit;outline:none}
.container{max-width:1280px;margin:0 auto;padding:0 24px}
@media(max-width:520px){.container{padding:0 16px}}

/* Header */
.site-header{
position:fixed;top:0;left:0;right:0;z-index:200;
background:rgba(10,22,40,0.85);
backdrop-filter:blur(16px);
-webkit-backdrop-filter:blur(16px);
border-bottom:1px solid rgba(255,255,255,0.06);
height:72px;
}
.header-inner{
height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{
width:38px;height:38px;border-radius:10px;
background:linear-gradient(135deg,rgba(29,78,216,0.35),rgba(34,211,238,0.20));
display:flex;align-items:center;justify-content:center;
color:var(--cyan);font-size:17px;
border:1px solid rgba(34,211,238,0.30);
box-shadow:0 0 18px rgba(34,211,238,0.15);
}
.logo-text{font-size:19px;font-weight:700;letter-spacing:.5px;display:flex;align-items:baseline}
.brand-primary{color:#fff}
.brand-accent{color:var(--cyan);margin-left:2px}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{
padding:8px 16px;border-radius:10px;font-size:15px;font-weight:500;
color:var(--muted);position:relative;white-space:nowrap;
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,0.05)}
.main-nav a.active{color:var(--cyan);background:rgba(34,211,238,0.10)}
.main-nav a.active::after{
content:"";position:absolute;left:16px;right:16px;bottom:2px;height:2px;
background:var(--cyan);border-radius:2px;box-shadow:0 0 10px rgba(34,211,238,0.60);
}
.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}
.search-box{
display:flex;align-items:center;gap:8px;
background:rgba(255,255,255,0.07);
border:1px solid rgba(255,255,255,0.10);
border-radius:24px;padding:7px 16px;width:200px;
}
.search-box i{color:var(--muted);font-size:13px}
.search-box input{
background:transparent;border:none;color:#fff;font-size:14px;width:100%;
}
.search-box input::placeholder{color:#6B7A90}
.search-box:focus-within{
border-color:var(--cyan);
box-shadow:0 0 0 3px rgba(34,211,238,0.15);
}
.login-link{font-size:14px;color:var(--muted);padding:6px 8px;border-radius:8px}
.login-link:hover{color:#fff}
.btn-primary{
display:inline-flex;align-items:center;justify-content:center;gap:6px;
background:var(--brand-blue);color:#fff;border-radius:12px;height:44px;
padding:0 24px;font-size:15px;font-weight:600;
box-shadow:var(--glow-blue);
transition:all .3s ease;border:1px solid rgba(255,255,255,0.10);
}
.btn-primary:hover{
background:#2563EB;
box-shadow:0 0 30px rgba(29,78,216,0.65);
transform:translateY(-1px);
color:#fff;
}
.btn-primary:active{transform:translateY(0)}
.btn-sm{height:38px;padding:0 20px;font-size:14px;border-radius:10px}
.btn-ghost{
display:inline-flex;align-items:center;justify-content:center;gap:6px;
background:transparent;color:#C7D2E0;border:1px solid rgba(255,255,255,0.25);
border-radius:12px;height:44px;padding:0 24px;font-size:15px;font-weight:500;
transition:all .3s ease;
}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);box-shadow:0 0 16px rgba(34,211,238,0.20)}
.hamburger{
display:none;width:40px;height:40px;border-radius:10px;
background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.10);
color:#fff;font-size:18px;align-items:center;justify-content:center;
}
.mobile-menu{
display:none;position:fixed;top:72px;left:0;right:0;z-index:199;
background:rgba(10,22,40,0.97);backdrop-filter:blur(16px);
border-bottom:1px solid rgba(255,255,255,0.08);
padding:12px 20px 20px;
}
.mobile-menu.show{display:block}
.mobile-menu a{
display:block;padding:12px 14px;border-radius:10px;
font-size:16px;color:var(--muted);
}
.mobile-menu a:hover{background:rgba(255,255,255,0.05);color:#fff}
.mobile-menu a.active{color:var(--cyan);background:rgba(34,211,238,0.08)}

/* Cat Hero */
.cat-hero{
position:relative;padding:168px 0 96px;overflow:hidden;
background:linear-gradient(135deg,#0A1628 0%,#0E1F36 55%,#122A4A 100%);
}
.cat-hero-bg{
position:absolute;inset:0;background-size:cover;background-position:center;
opacity:0.28;
}
.cat-hero-overlay{
position:absolute;inset:0;
background:linear-gradient(to right,rgba(10,22,40,0.92) 0%,rgba(10,22,40,0.65) 60%,rgba(10,22,40,0.30) 100%);
}
.cat-hero-gridlines{
position:absolute;inset:0;pointer-events:none;opacity:0.35;
background-image:linear-gradient(rgba(34,211,238,0.12) 1px,transparent 1px),
linear-gradient(90deg,rgba(34,211,238,0.12) 1px,transparent 1px);
background-size:48px 48px;
}
.cat-hero-content{position:relative;z-index:2;max-width:840px}
.cat-hero-badge{
display:inline-flex;align-items:center;gap:8px;
background:rgba(34,211,238,0.12);border:1px solid rgba(34,211,238,0.30);
color:var(--cyan);font-size:13px;font-weight:600;
border-radius:24px;padding:6px 18px;margin-bottom:22px;
}
.cat-hero-badge i{font-size:12px}
.cat-hero h1{
font-size:44px;line-height:1.25;font-weight:800;color:#fff;
letter-spacing:.5px;margin-bottom:18px;
}
.cat-hero p{
font-size:17px;line-height:1.75;color:#A8B8CD;
max-width:700px;margin-bottom:34px;
}
.cat-hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-trust{
display:flex;gap:24px;margin-top:42px;flex-wrap:wrap;
}
.hero-trust span{display:flex;align-items:center;gap:8px;font-size:13px;color:#7C8DA3}
.hero-trust i{color:var(--cyan);font-size:14px}

/* Section */
.section{padding:84px 0}
.section-alt{background:rgba(14,31,54,0.45)}
.section-header{margin-bottom:48px;max-width:760px}
.section-title{
font-size:30px;line-height:1.3;font-weight:700;color:#fff;
display:flex;align-items:center;gap:12px;margin-bottom:12px;
}
.section-title .bar{
width:4px;height:26px;border-radius:4px;flex-shrink:0;
background:linear-gradient(180deg,var(--cyan),rgba(34,211,238,0.20));
box-shadow:0 0 12px rgba(34,211,238,0.40);
}
.section-subtitle{font-size:15px;color:var(--muted);line-height:1.7}

/* Desc */
.desc-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.desc-text p{color:#A8B8CD;font-size:16px;line-height:1.85;margin-bottom:20px}
.desc-text p strong{color:#fff;font-weight:600}
.desc-image{
border-radius:20px;overflow:hidden;position:relative;
border:1px solid rgba(255,255,255,0.10);
box-shadow:var(--shadow);
}
.desc-image img{width:100%;height:400px;object-fit:cover}
.desc-image::after{
content:"";position:absolute;inset:0;
background:linear-gradient(to top,rgba(10,22,40,0.30),transparent 50%);
}
.desc-tag{
position:absolute;left:20px;bottom:20px;z-index:2;
background:rgba(10,22,40,0.80);backdrop-filter:blur(10px);
border:1px solid rgba(34,211,238,0.30);
color:var(--cyan);font-size:13px;font-weight:500;
border-radius:20px;padding:6px 16px;
}

/* Feature cards */
.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.feature-card{
display:flex;gap:20px;align-items:flex-start;
background:var(--card-bg);border:1px solid var(--border);
border-radius:var(--radius);padding:30px;
backdrop-filter:blur(20px);
transition:all .35s ease;
position:relative;overflow:hidden;
}
.feature-card::before{
content:"";position:absolute;top:0;left:0;right:0;height:1px;
background:linear-gradient(90deg,var(--cyan),transparent);
opacity:0;transition:opacity .35s ease;
}
.feature-card:hover{
background:rgba(255,255,255,0.09);border-color:rgba(34,211,238,0.35);
box-shadow:0 0 30px rgba(34,211,238,0.12);
transform:translateY(-3px);
}
.feature-card:hover::before{opacity:1}
.feature-icon{
width:60px;height:60px;border-radius:12px;flex-shrink:0;
display:flex;align-items:center;justify-content:center;
font-size:22px;color:#fff;position:relative;
background:rgba(29,78,216,0.35);
border:1px solid rgba(29,78,216,0.30);
}
.feature-icon.pixel-bg{
background-image:repeating-linear-gradient(0deg,rgba(34,211,238,0.10) 0 1px,transparent 1px 4px),
repeating-linear-gradient(90deg,rgba(34,211,238,0.10) 0 1px,transparent 1px 4px);
border-radius:6px;
}
.feature-body{flex:1}
.feature-body h3{font-size:18px;font-weight:600;color:#fff;margin-bottom:10px}
.feature-body p{font-size:14px;color:var(--muted);line-height:1.65;margin-bottom:14px}
.learn-more{
display:inline-flex;align-items:center;gap:6px;
font-size:14px;font-weight:500;color:var(--cyan);
}
.learn-more i{transition:transform .3s ease;font-size:12px}
.learn-more:hover i{transform:translateX(4px)}
.learn-more:hover{color:#67E8F9}

/* Process */
.process-grid{
display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative;
}
.process-step{
position:relative;background:var(--card-bg);
border:1px solid var(--border);border-radius:16px;
padding:28px 22px;text-align:center;
transition:all .3s ease;
}
.process-step:hover{
border-color:rgba(34,211,238,0.35);
background:rgba(255,255,255,0.08);
transform:translateY(-3px);
}
.step-num{
width:44px;height:44px;border-radius:12px;margin:0 auto 16px;
background:linear-gradient(135deg,rgba(29,78,216,0.40),rgba(34,211,238,0.25));
border:1px solid rgba(34,211,238,0.25);
display:flex;align-items:center;justify-content:center;
font-family:"Roboto Mono",monospace;font-size:15px;font-weight:700;
color:var(--cyan);
}
.process-step h3{font-size:16px;font-weight:600;color:#fff;margin-bottom:8px}
.process-step p{font-size:13px;color:var(--muted);line-height:1.6}
.process-step::after{
content:"→";position:absolute;right:-16px;top:50%;transform:translateY(-50%);
color:rgba(34,211,238,0.40);font-size:16px;z-index:2;
}
.process-step:last-child::after{display:none}

/* Scene */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.scene-card{
background:var(--card-bg);border:1px solid var(--border);
border-radius:16px;overflow:hidden;
transition:all .35s ease;display:flex;flex-direction:column;
}
.scene-card:hover{
transform:translateY(-4px);border-color:rgba(34,211,238,0.35);
box-shadow:0 12px 32px rgba(0,0,0,0.35);
}
.scene-img{height:160px;overflow:hidden;position:relative}
.scene-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.scene-card:hover .scene-img img{transform:scale(1.05)}
.scene-img::after{
content:"";position:absolute;inset:0;
background:linear-gradient(to top,rgba(10,22,40,0.55),transparent 60%);
}
.scene-body{padding:20px;flex:1;display:flex;flex-direction:column}
.scene-body h3{font-size:16px;font-weight:600;color:#fff;margin-bottom:8px}
.scene-body p{font-size:13px;color:var(--muted);line-height:1.6;margin-bottom:14px;flex:1}
.scene-badge{
display:inline-flex;align-items:center;
font-size:12px;color:var(--cyan);background:rgba(34,211,238,0.10);
border-radius:16px;padding:3px 12px;align-self:flex-start;
}

/* News */
.news-section{position:relative}
.news-section::before{
content:"";position:absolute;inset:0;pointer-events:none;opacity:0.4;
background:radial-gradient(ellipse at 20% 30%,rgba(29,78,216,0.10),transparent 60%),
radial-gradient(ellipse at 80% 70%,rgba(34,211,238,0.06),transparent 50%);
}
.empty-state{
position:relative;z-index:2;
background:rgba(255,255,255,0.04);
border:1px solid rgba(255,255,255,0.08);
border-radius:20px;padding:72px 40px;text-align:center;
backdrop-filter:blur(20px);
}
.empty-icon{
width:64px;height:64px;margin:0 auto 20px;border-radius:18px;
background:rgba(34,211,238,0.10);border:1px solid rgba(34,211,238,0.20);
display:flex;align-items:center;justify-content:center;color:var(--cyan);font-size:24px;
}
.empty-state p{font-size:16px;color:#A8B8CD}
.empty-state .hint{font-size:13px;color:#5B6B82;margin-top:8px}

/* FAQ */
.faq-list{max-width:880px;margin:0 auto}
.faq-item{
background:var(--card-bg);border:1px solid var(--border);
border-radius:14px;margin-bottom:14px;overflow:hidden;
transition:all .3s ease;
}
.faq-item:hover{border-color:rgba(34,211,238,0.25)}
.faq-item.open{
border-color:rgba(34,211,238,0.35);
background:rgba(255,255,255,0.07);
}
.faq-question{
width:100%;display:flex;align-items:center;justify-content:space-between;
padding:20px 24px;background:transparent;text-align:left;
color:#fff;font-size:16px;font-weight:500;gap:16px;
transition:color .2s ease;
}
.faq-question:hover{color:var(--cyan)}
.faq-toggle{
width:28px;height:28px;border-radius:8px;flex-shrink:0;
background:rgba(34,211,238,0.12);color:var(--cyan);
display:flex;align-items:center;justify-content:center;
font-size:13px;transition:all .35s ease;
}
.faq-item.open .faq-toggle{transform:rotate(45deg);background:var(--cyan);color:#0A1628}
.faq-answer{
display:none;padding:0 24px 22px;border-left:2px solid rgba(34,211,238,0.50);
margin-left:24px;padding-left:8px;
}
.faq-answer p{color:#A8B8CD;font-size:15px;line-height:1.75}

/* CTA */
.cta-banner{
position:relative;padding:56px 0;overflow:hidden;
}
.cta-inner{
position:relative;z-index:2;
background:linear-gradient(135deg,rgba(29,78,216,0.25),rgba(34,211,238,0.10));
border:1px solid rgba(34,211,238,0.25);
border-radius:20px;padding:44px 48px;
display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
backdrop-filter:blur(20px);
overflow:hidden;
}
.cta-inner::before{
content:"";position:absolute;top:0;left:0;right:0;height:1px;
background:linear-gradient(90deg,var(--cyan),transparent);
}
.cta-text h3{font-size:22px;font-weight:600;color:#fff;margin-bottom:6px}
.cta-text p{font-size:14px;color:#A8B8CD}

/* Footer */
.footer{
background:#080F1E;border-top:1px solid rgba(255,255,255,0.05);
padding:64px 0 0;position:relative;
}
.footer::before{
content:"";position:absolute;top:0;left:0;right:0;height:1px;
background:linear-gradient(90deg,var(--cyan),rgba(34,211,238,0.10) 30%,transparent 70%);
}
.footer-grid{
display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px;
padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,0.06);
}
.footer-brand .logo{margin-bottom:18px}
.footer-brand p{font-size:14px;color:#5B6B82;line-height:1.75;margin-bottom:20px}
.footer-social{display:flex;gap:10px}
.footer-social a{
width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.08);
color:#7C8DA3;font-size:14px;transition:all .3s ease;
}
.footer-social a:hover{background:rgba(34,211,238,0.12);border-color:rgba(34,211,238,0.30);color:var(--cyan)}
.footer-col h4{
font-size:15px;font-weight:600;color:#fff;margin-bottom:20px;
}
.footer-col a{
display:block;font-size:14px;color:#7C8DA3;padding:5px 0;transition:color .25s ease;
}
.footer-col a:hover{color:var(--cyan)}
.footer-col p{font-size:14px;color:#7C8DA3;padding:5px 0;line-height:1.7}
.footer-bottom{
display:flex;align-items:center;justify-content:space-between;
padding:22px 0;flex-wrap:wrap;gap:12px;
}
.footer-bottom p{font-size:13px;color:#5B6B82}

/* Glow dots */
.glow-dot{
position:absolute;width:5px;height:5px;border-radius:50%;
background:var(--cyan);box-shadow:0 0 12px rgba(34,211,238,0.60);
animation:pulse 3s ease-in-out infinite;pointer-events:none;
}
.glow-dot.purple{background:var(--purple);box-shadow:0 0 12px rgba(124,58,237,0.50);animation-delay:1s}
@keyframes pulse{
0%,100%{opacity:.15;transform:scale(1)}
50%{opacity:.75;transform:scale(1.6)}
}

/* Responsive */
@media(max-width:1280px){
.process-grid{grid-template-columns:repeat(2,1fr)}
.process-step::after{display:none}
}
@media(max-width:1024px){
.main-nav,.header-actions .search-box{display:none}
.hamburger{display:flex}
.desc-grid{grid-template-columns:1fr;gap:36px}
.feature-grid{grid-template-columns:1fr}
.scene-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:768px){
.cat-hero{padding:140px 0 64px}
.cat-hero h1{font-size:32px}
.section{padding:56px 0}
.section-title{font-size:24px}
.process-grid{grid-template-columns:1fr}
.scene-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr;gap:24px}
.cta-inner{padding:32px 24px;flex-direction:column;align-items:flex-start}
.hero-trust{flex-direction:column;gap:12px}
}
@media(max-width:520px){
.header-actions .login-link{display:none}
.header-actions .btn-sm{padding:0 14px;font-size:13px}
.cat-hero h1{font-size:27px}
.cat-hero p{font-size:15px}
.section-title{font-size:22px}
.desc-image img{height:280px}
.footer-bottom{flex-direction:column;text-align:center}
}