/* roulang page: index */
:root {
  --c-primary: #0B132B;
  --c-secondary: #101F3C;
  --c-card: #1C2E4A;
  --c-accent: #00F0B5;
  --c-accent-blue: #3D8BFF;
  --c-border: rgba(255,255,255,0.06);
  --c-border-strong: rgba(255,255,255,0.08);
  --c-text: #FFFFFF;
  --c-text-dim: rgba(255,255,255,0.8);
  --c-text-weak: rgba(255,255,255,0.6);
  --c-text-faint: rgba(255,255,255,0.4);
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-input: 10px;
  --radius-tag: 999px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.06);
  --shadow-card-hover: 0 12px 36px rgba(0,0,0,0.5), 0 0 0 1px rgba(0,240,181,0.25);
  --shadow-accent: 0 0 20px rgba(0,240,181,0.45);
  --spacing-section: 80px;
  --spacing-section-mobile: 48px;
  --font-main: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Consolas", monospace;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-main);
  background: var(--c-primary);
  color: var(--c-text);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: inherit; text-decoration: none; transition: color .2s ease, border-color .2s ease, background .2s ease, transform .2s ease, box-shadow .2s ease; }
button { font-family: inherit; border: 0; background: none; cursor: pointer; }
input, textarea { font-family: inherit; }
ul, ol { list-style: none; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; width: 100%; }
.section { padding: var(--spacing-section) 0; position: relative; }
.section-header { margin-bottom: 48px; text-align: center; }
.section-header .tagline {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(0,240,181,0.08); border: 1px solid rgba(0,240,181,0.2);
  color: var(--c-accent); font-size: 13px; font-weight: 600;
  padding: 6px 16px; border-radius: var(--radius-tag);
  letter-spacing: 0.5px; margin-bottom: 16px; text-transform: uppercase;
}
.section-header h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--c-text);
}
.section-header p {
  font-size: 16px;
  color: var(--c-text-weak);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.8;
}
.section-number {
  display: flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; border-radius: 14px;
  background: linear-gradient(135deg, rgba(0,240,181,0.15), rgba(61,139,255,0.1));
  border: 1px solid rgba(0,240,181,0.25);
  color: var(--c-accent); font-size: 18px; font-weight: 700;
  margin: 0 auto 20px;
}
.text-accent { color: var(--c-accent); }
.text-blue { color: var(--c-accent-blue); }

.hero {
  position: relative;
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 80px 0;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 70% 30%, rgba(0,240,181,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 20% 80%, rgba(61,139,255,0.06) 0%, transparent 45%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
.hero .container { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(16,31,60,0.6);
  border: 1px solid rgba(255,255,255,0.1);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-tag);
  padding: 8px 18px;
  color: var(--c-text-dim);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 28px;
  letter-spacing: 0.3px;
}
.hero-badge i { color: var(--c-accent); font-size: 14px; }
.hero h1 {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  max-width: 640px;
}
.hero-subtitle {
  font-size: 18px;
  color: var(--c-text-weak);
  line-height: 1.6;
  max-width: 500px;
  margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  transition: all .25s ease;
  line-height: 1.4;
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--c-accent);
  color: var(--c-primary);
  box-shadow: inset 0 -2px 0 rgba(0,0,0,0.1);
}
.btn-primary:hover {
  box-shadow: var(--shadow-accent);
  background: #00ffbe;
  transform: translateY(-2px);
}
.btn-secondary {
  background: transparent;
  border-color: rgba(255,255,255,0.25);
  color: var(--c-text);
}
.btn-secondary:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
  transform: translateY(-2px);
}
.btn-ghost {
  background: transparent;
  color: var(--c-text-weak);
  font-weight: 500;
  padding: 12px 16px;
}
.btn-ghost:hover { color: var(--c-accent); text-decoration: underline; }
.btn:focus-visible {
  outline: 2px solid rgba(0,240,181,0.4);
  outline-offset: 2px;
}
.hero-visual {
  position: relative;
  height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-main-image {
  width: 100%;
  max-width: 560px;
  border-radius: 20px;
  box-shadow: var(--shadow-card);
  z-index: 1;
}
.floating-card {
  position: absolute;
  background: rgba(28,46,74,0.65);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 14px;
  padding: 14px 18px;
  display: flex; align-items: center; gap: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.45);
  z-index: 2;
  min-width: 180px;
}
.floating-card .fc-icon {
  width: 36px; height: 36px; border-radius: 10px;
  background: rgba(0,240,181,0.12);
  border: 1px solid rgba(0,240,181,0.2);
  display: flex; align-items: center; justify-content: center;
  color: var(--c-accent); font-size: 14px;
  flex-shrink: 0;
}
.floating-card .fc-label { font-size: 12px; color: var(--c-text-weak); line-height: 1.3; }
.floating-card .fc-value { font-size: 16px; font-weight: 700; color: var(--c-text); line-height: 1.3; }
.fc-detail { font-size: 11px; color: var(--c-text-faint); }
.fc-1 { top: 8%; left: -5%; transform: rotate(-3deg); }
.fc-2 { bottom: 18%; right: -2%; transform: rotate(2deg); }
.fc-3 { top: 45%; right: -8%; transform: rotate(-1deg); }
.hero-glow {
  position: absolute;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(0,240,181,0.12) 0%, transparent 65%);
  border-radius: 50%;
  z-index: 0;
  top: 20%; right: 10%;
  pointer-events: none;
}

/* Header */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: 64px;
  background: rgba(11,19,43,0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--c-border);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  height: 64px;
  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: 32px; height: 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--c-accent), var(--c-accent-blue));
  display: flex; align-items: center; justify-content: center;
  color: var(--c-primary);
  font-size: 15px;
  font-weight: 700;
  box-shadow: 0 0 12px rgba(0,240,181,0.3);
}
.logo-text {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--c-text);
  white-space: nowrap;
}
.logo-text span { color: var(--c-accent); }
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 14px;
  color: var(--c-text-dim);
  font-weight: 500;
  border-radius: 8px;
  transition: all .2s ease;
  line-height: 1.4;
}
.main-nav a:hover { color: var(--c-accent); background: rgba(0,240,181,0.06); }
.main-nav a.active {
  color: var(--c-accent);
  background: rgba(0,240,181,0.08);
  font-weight: 600;
}
.nav-right { display: flex; align-items: center; gap: 14px; }
.search-box {
  display: flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-input);
  padding: 7px 14px;
  cursor: pointer;
  transition: all .2s ease;
  min-width: 170px;
}
.search-box:hover { border-color: rgba(0,240,181,0.3); background: rgba(255,255,255,0.08); }
.search-box i { color: var(--c-text-faint); font-size: 12px; }
.search-box .search-placeholder { color: var(--c-text-faint); font-size: 13px; flex: 1; }
.search-box .shortcut {
  font-family: var(--font-mono);
  font-size: 11px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 1px 6px;
  border-radius: 4px;
  color: var(--c-text-faint);
}
.nav-actions { display: flex; align-items: center; gap: 6px; }
.icon-btn {
  width: 36px; height: 36px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px;
  color: var(--c-text-dim);
  transition: all .2s ease;
  border: 1px solid transparent;
}
.icon-btn:hover {
  color: var(--c-accent);
  background: rgba(0,240,181,0.06);
  border-color: rgba(0,240,181,0.15);
}
.nav-cta {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 20px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  background: transparent;
  color: var(--c-accent);
  border: 1px solid rgba(0,240,181,0.5);
  transition: all .25s ease;
  box-shadow: 0 0 8px rgba(0,240,181,0.1);
}
.nav-cta:hover {
  background: rgba(0,240,181,0.08);
  box-shadow: 0 0 16px rgba(0,240,181,0.2);
  transform: translateY(-1px);
}
.mobile-menu-btn { display: none; }
.mobile-menu {
  display: none;
  position: fixed;
  top: 64px; left: 0; right: 0;
  background: rgba(11,19,43,0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--c-border);
  z-index: 998;
  padding: 20px;
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  padding: 14px 10px;
  font-size: 16px;
  color: var(--c-text-dim);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  font-weight: 500;
}
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a:hover { color: var(--c-accent); }
.mobile-menu a.active { color: var(--c-accent); }
.mobile-menu .mobile-cta {
  margin-top: 16px;
  display: flex;
}
.mobile-menu .mobile-search-input {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-input);
  color: var(--c-text);
  font-size: 15px;
  margin-bottom: 12px;
}
.mobile-menu .mobile-search-input:focus {
  outline: 2px solid rgba(0,240,181,0.3);
  border-color: rgba(0,240,181,0.3);
}
.mobile-menu .mobile-search-input::placeholder { color: var(--c-text-faint); }

/* Stats Band */
.stats-band {
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  background: linear-gradient(180deg, rgba(16,31,60,0.3), rgba(11,19,43,0.3));
  padding: 36px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-item {
  text-align: center;
  padding: 24px 16px;
  border-radius: var(--radius-card);
  background: rgba(28,46,74,0.35);
  border: 1px solid var(--c-border);
  backdrop-filter: blur(8px);
  transition: border-color .3s ease, transform .3s ease;
}
.stat-item:hover {
  border-color: rgba(0,240,181,0.15);
  transform: translateY(-2px);
}
.stat-value {
  font-size: clamp(30px, 3.5vw, 42px);
  font-weight: 700;
  color: var(--c-accent);
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 6px;
}
.stat-label {
  font-size: 13px;
  color: var(--c-text-weak);
  letter-spacing: 0.3px;
}

/* Feature Cards */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: rgba(28,46,74,0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius-card);
  padding: 28px;
  transition: all .3s ease;
  position: relative;
  overflow: hidden;
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,240,181,0.3);
  box-shadow: var(--shadow-card-hover);
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(0,240,181,0.4), transparent);
  opacity: 0;
  transition: opacity .3s ease;
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: rgba(0,240,181,0.1);
  border: 1px solid rgba(0,240,181,0.15);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  color: var(--c-accent);
  margin-bottom: 18px;
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--c-text);
}
.feature-card p {
  font-size: 14px;
  color: var(--c-text-weak);
  line-height: 1.7;
  margin-bottom: 16px;
}
.feature-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-accent);
}
.feature-link:hover { gap: 10px; color: #00ffbe; }
.feature-link i { font-size: 12px; transition: transform .2s ease; }
.feature-card:hover .feature-link i { transform: translateX(3px); }

/* News List */
.news-section {
  background: linear-gradient(180deg, rgba(16,31,60,0.2), rgba(11,19,43,0.3));
}
.news-list {
  max-width: 900px;
  margin: 0 auto;
}
.news-item {
  display: flex;
  align-items: center;
  gap: 20px;
  background: rgba(28,46,74,0.45);
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius-card);
  padding: 20px 24px;
  margin-bottom: 14px;
  transition: all .3s ease;
}
.news-item:hover {
  background: rgba(28,46,74,0.7);
  border-color: rgba(0,240,181,0.2);
  transform: translateX(4px);
}
.news-date {
  flex-shrink: 0;
  text-align: center;
  padding-right: 22px;
  border-right: 1px solid rgba(255,255,255,0.08);
  min-width: 80px;
}
.news-date .week { font-size: 12px; color: var(--c-accent); font-weight: 600; display: block; }
.news-date .day { font-size: 26px; font-weight: 700; color: var(--c-text); line-height: 1.2; }
.news-date .month { font-size: 11px; color: var(--c-text-faint); text-transform: uppercase; }
.news-info { flex: 1; min-width: 0; }
.news-info h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.news-info h3 a:hover { color: var(--c-accent); }
.news-info p {
  font-size: 14px;
  color: var(--c-text-weak);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-meta { display: flex; align-items: center; gap: 14px; flex-shrink: 0; font-size: 13px; color: var(--c-text-faint); }
.news-cat {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(0,240,181,0.15);
  color: var(--c-accent);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-tag);
  white-space: nowrap;
}
.news-arrow { color: var(--c-text-faint); font-size: 14px; transition: color .2s, transform .2s; }
.news-item:hover .news-arrow { color: var(--c-accent); transform: translateX(3px); }
.news-empty {
  text-align: center;
  padding: 60px 20px;
  background: rgba(16,31,60,0.5);
  border: 1px dashed rgba(255,255,255,0.08);
  border-radius: var(--radius-card);
  color: var(--c-text-weak);
  font-size: 15px;
}

/* Scenarios */
.scenario-row {
  display: flex;
  align-items: center;
  gap: 56px;
  margin-bottom: 72px;
}
.scenario-row:nth-child(even) { flex-direction: row-reverse; }
.scenario-row:last-child { margin-bottom: 0; }
.scenario-img {
  flex: 1;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  position: relative;
  min-height: 260px;
  background: linear-gradient(135deg, rgba(16,31,60,0.6), rgba(28,46,74,0.6));
}
.scenario-img img { width: 100%; height: 100%; object-fit: cover; min-height: 260px; }
.scenario-content { flex: 1; }
.scenario-content .sc-tag {
  display: inline-block;
  background: rgba(0,240,181,0.1);
  border: 1px solid rgba(0,240,181,0.2);
  color: var(--c-accent);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: var(--radius-tag);
  margin-bottom: 12px;
}
.scenario-content h3 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}
.scenario-content p {
  font-size: 15px;
  color: var(--c-text-weak);
  line-height: 1.75;
  margin-bottom: 24px;
}
.scenario-list {
  margin-bottom: 24px;
}
.scenario-list li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 14px;
  color: var(--c-text-dim);
  margin-bottom: 12px;
  line-height: 1.6;
}
.scenario-list li i {
  color: var(--c-accent);
  font-size: 13px;
  margin-top: 4px;
  flex-shrink: 0;
}

/* Case Cards */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  background: rgba(28,46,74,0.5);
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius-card);
  padding: 28px;
  transition: all .3s ease;
  display: block;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.case-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,240,181,0.25);
  box-shadow: var(--shadow-card-hover);
}
.case-card::after {
  content: "";
  position: absolute;
  top: -40%; right: -40%;
  width: 80%; height: 80%;
  background: radial-gradient(circle, rgba(0,240,181,0.08) 0%, transparent 70%);
  opacity: 0;
  transition: opacity .3s ease;
  pointer-events: none;
}
.case-card:hover::after { opacity: 1; }
.case-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.case-brand-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: rgba(61,139,255,0.12);
  border: 1px solid rgba(61,139,255,0.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 15px;
  color: var(--c-accent-blue);
}
.case-brand-name { font-size: 16px; font-weight: 700; }
.case-result {
  font-size: 20px;
  font-weight: 700;
  color: var(--c-accent);
  margin-bottom: 10px;
  line-height: 1.4;
}
.case-desc { font-size: 14px; color: var(--c-text-weak); line-height: 1.6; margin-bottom: 16px; }
.case-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 12px;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: var(--radius-tag);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--c-text-weak);
}
.tag-accent {
  background: rgba(0,240,181,0.1);
  border-color: rgba(0,240,181,0.15);
  color: var(--c-accent);
}

/* Pricing */
.pricing-section { background: linear-gradient(180deg, rgba(16,31,60,0.25), rgba(11,19,43,0.3)); }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: center;
}
.pricing-card {
  background: rgba(28,46,74,0.7);
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius-card);
  padding: 32px;
  transition: all .3s ease;
  position: relative;
}
.pricing-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255,255,255,0.12);
  box-shadow: var(--shadow-card);
}
.pricing-card.selected {
  background: linear-gradient(160deg, rgba(28,46,74,0.9), rgba(16,31,60,0.9));
  border: 1px solid rgba(0,240,181,0.3);
  box-shadow: 0 8px 40px rgba(0,0,0,0.5), 0 0 20px rgba(0,240,181,0.08);
  transform: scale(1.03);
}
.pricing-card.selected:hover {
  border-color: rgba(0,240,181,0.5);
  box-shadow: 0 8px 40px rgba(0,0,0,0.5), 0 0 30px rgba(0,240,181,0.15);
}
.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, var(--c-accent), #00ffbe);
  color: var(--c-primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: var(--radius-tag);
  box-shadow: 0 2px 12px rgba(0,240,181,0.3);
  white-space: nowrap;
  letter-spacing: 0.3px;
}
.pricing-name { font-size: 15px; font-weight: 600; color: var(--c-text-weak); margin-bottom: 12px; }
.pricing-price { font-size: 40px; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 4px; }
.pricing-price small { font-size: 16px; font-weight: 400; color: var(--c-text-faint); }
.pricing-desc { font-size: 13px; color: var(--c-text-faint); margin-bottom: 24px; line-height: 1.6; }
.pricing-features { margin-bottom: 28px; }
.pricing-features li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 14px;
  color: var(--c-text-dim);
  margin-bottom: 10px;
  line-height: 1.5;
}
.pricing-features li i { color: var(--c-accent); font-size: 12px; margin-top: 4px; }
.pricing-features li.muted { color: var(--c-text-faint); }
.pricing-features li.muted i { color: var(--c-text-faint); }
.pricing-btn {
  width: 100%;
  padding: 12px 20px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  text-align: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all .25s ease;
  border: 1px solid transparent;
}
.pricing-btn.primary {
  background: var(--c-accent);
  color: var(--c-primary);
  box-shadow: inset 0 -2px 0 rgba(0,0,0,0.1);
}
.pricing-btn.primary:hover {
  box-shadow: var(--shadow-accent);
  background: #00ffbe;
  transform: translateY(-1px);
}
.pricing-btn.secondary {
  background: transparent;
  border-color: rgba(255,255,255,0.25);
  color: var(--c-text);
}
.pricing-btn.secondary:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
  transform: translateY(-1px);
}
.pricing-btn:focus-visible {
  outline: 2px solid rgba(0,240,181,0.4);
  outline-offset: 2px;
}
.pricing-card.selected .pricing-btn.secondary {
  border-color: rgba(0,240,181,0.4);
  color: var(--c-accent);
}

/* FAQ */
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: rgba(28,46,74,0.4);
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius-card);
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color .3s ease, background .3s ease;
}
.faq-item.open {
  border-color: rgba(0,240,181,0.3);
  background: rgba(28,46,74,0.6);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-text);
  transition: color .2s ease;
  user-select: none;
}
.faq-question:hover { color: var(--c-accent); }
.faq-icon {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: rgba(0,240,181,0.1);
  border: 1px solid rgba(0,240,181,0.15);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px;
  color: var(--c-accent);
  flex-shrink: 0;
  transition: transform .3s ease, background .3s ease;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: rgba(0,240,181,0.15);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px 24px;
}
.faq-answer p {
  font-size: 14px;
  color: var(--c-text-weak);
  line-height: 1.8;
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 16px;
}

/* CTA */
.cta-section { position: relative; overflow: hidden; }
.cta-box {
  background: linear-gradient(135deg, rgba(28,46,74,0.85), rgba(16,31,60,0.85));
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(0,240,181,0.15);
  border-radius: 20px;
  padding: 64px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: "";
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle at 30% 20%, rgba(0,240,181,0.1) 0%, transparent 50%);
  pointer-events: none;
}
.cta-box h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  position: relative;
}
.cta-box p {
  font-size: 16px;
  color: var(--c-text-weak);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.7;
  position: relative;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}
.cta-actions .btn-primary i { font-size: 14px; }

/* Footer */
.site-footer {
  background: #070C1A;
  border-top: 1px solid rgba(0,240,181,0.1);
  padding: 56px 0 0;
  position: relative;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0; left: 20%; right: 20%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,240,181,0.3), transparent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand { max-width: 300px; }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--c-text);
}
.footer-logo-text span { color: var(--c-accent); }
.footer-brand p {
  font-size: 13px;
  color: var(--c-text-faint);
  line-height: 1.7;
}
.footer-col h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--c-text-faint);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  font-size: 14px;
  color: var(--c-text-weak);
  transition: color .2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-col ul li a:hover { color: var(--c-accent); }
.footer-col ul li a i { font-size: 10px; color: var(--c-text-faint); transition: color .2s ease, transform .2s ease; }
.footer-col ul li a:hover i { color: var(--c-accent); transform: translateX(3px); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.04);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--c-text-faint);
}
.footer-bottom .footer-links { display: flex; gap: 20px; }
.footer-bottom .footer-links a {
  font-size: 13px;
  color: var(--c-text-faint);
  transition: color .2s ease;
}
.footer-bottom .footer-links a:hover { color: var(--c-accent); }

/* Custom grid helpers */
.grid-x { display: flex; flex-wrap: wrap; }
.grid-margin-x { margin-left: -12px; margin-right: -12px; }
.grid-margin-x > .cell { padding-left: 12px; padding-right: 12px; }
.cell { flex: 0 0 auto; }
.small-12 { width: 100%; }
.medium-6 { width: 50%; }
.large-4 { width: 33.333%; }
.large-7 { width: 58.333%; }
.large-5 { width: 41.666%; }
.medium-4 { width: 33.333%; }
.medium-8 { width: 66.666%; }
.medium-3 { width: 25%; }
@supports (display: grid) {
  .grid-x { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; }
  .grid-x .cell { padding: 0; }
  .small-12 { grid-column: span 12; }
  .medium-4 { grid-column: span 4; }
  .medium-6 { grid-column: span 6; }
  .medium-8 { grid-column: span 8; }
  .medium-3 { grid-column: span 3; }
  .large-4 { grid-column: span 4; }
  .large-7 { grid-column: span 7; }
  .large-5 { grid-column: span 5; }
}

@media screen and (max-width: 1024px) {
  :root { --spacing-section: 60px; }
  .main-nav { display: none; }
  .mobile-menu-btn { display: flex; }
  .nav-cta { display: none; }
  .search-box { display: none; }
  .hero { min-height: auto; padding: 100px 0 80px; }
  .hero-visual { height: 380px; margin-top: 40px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .pricing-card { padding: 24px 20px; }
  .fs-grid { grid-template-columns: repeat(2, 1fr); }
}

@media screen and (max-width: 640px) {
  :root { --spacing-section: 48px; }
  .container { padding: 0 16px; }
  .hero { padding: 80px 0 48px; }
  .hero h1 { font-size: 32px; }
  .hero-subtitle { font-size: 16px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .hero-visual { height: 300px; }
  .floating-card { min-width: 130px; padding: 10px 14px; }
  .floating-card .fc-icon { width: 30px; height: 30px; }
  .fc-label, .fc-detail { font-size: 10px; }
  .fc-value { font-size: 14px; }
  .fc-1 { left: -4%; }
  .fc-2 { right: -4%; }
  .fc-3 { right: 0; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stat-item { padding: 16px 10px; }
  .stat-value { font-size: 28px; }
  .features-grid { grid-template-columns: 1fr; gap: 14px; }
  .section-header { margin-bottom: 32px; }
  .section-header h2 { font-size: 26px; }
  .news-item { flex-direction: column; align-items: flex-start; gap: 12px; padding: 18px; }
  .news-date {
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    padding-right: 0;
    padding-bottom: 10px;
    width: 100%;
    text-align: left;
  }
  .news-meta {
    margin-top: 4px;
  }
  .scenario-row, .scenario-row:nth-child(even) { flex-direction: column; gap: 24px; }
  .scenario-img, .scenario-img img { min-height: 200px; }
  .cases-grid { grid-template-columns: 1fr; gap: 14px; }
  .pricing-grid { grid-template-columns: 1fr; gap: 16px; }
  .pricing-card.selected { transform: scale(1.02); }
  .pricing-badge { position: static; display: inline-block; margin-bottom: 12px; transform: none; }
  .cta-box { padding: 40px 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer-brand { grid-column: span 2; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-bottom .footer-links { justify-content: center; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; }
}

@media screen and (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-item:nth-child(odd) { border-right: 1px solid rgba(255,255,255,0.05); }
  .footer-grid { grid-template-columns: 1fr; padding-bottom: 24px; }
  .footer-brand { grid-column: auto; }
  .news-info-p { display: none; }
}

/* roulang page: category1 */
:root {
            --bg-deep: #0B132B;
            --bg-panel: #101F3C;
            --bg-card: #1C2E4A;
            --accent: #00F0B5;
            --accent-blue: #3D8BFF;
            --text-main: #FFFFFF;
            --text-sub: rgba(255, 255, 255, 0.72);
            --text-dim: rgba(255, 255, 255, 0.5);
            --border-soft: rgba(255, 255, 255, 0.08);
            --border-mid: rgba(255, 255, 255, 0.14);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-tag: 999px;
            --radius-input: 10px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 20px rgba(0, 240, 181, 0.45);
            --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg-deep);
            color: var(--text-main);
            line-height: 1.7;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            background-image: radial-gradient(ellipse 60% 40% at 12% 0%, rgba(61, 139, 255, 0.18), transparent 60%),
                radial-gradient(ellipse 50% 35% at 90% 10%, rgba(0, 240, 181, 0.08), transparent 55%),
                linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
            background-size: auto, auto, 44px 44px, 44px 44px;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }

        ul,
        ol {
            list-style: none;
        }

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            outline: none;
        }

        h1,
        h2,
        h3,
        h4 {
            line-height: 1.25;
            font-weight: 700;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding: 80px 0;
            position: relative;
        }

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

        .section-head.centered {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-title {
            font-size: clamp(28px, 4vw, 40px);
            letter-spacing: -0.02em;
        }

        .section-sub {
            color: var(--text-sub);
            font-size: 16px;
            margin-top: 12px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 240, 181, 0.1);
            border: 1px solid rgba(0, 240, 181, 0.2);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: var(--radius-tag);
            margin-bottom: 16px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.2;
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
            border: 1px solid transparent;
        }

        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid rgba(0, 240, 181, 0.4);
            outline-offset: 3px;
        }

        .btn-primary {
            background: var(--accent);
            color: var(--bg-deep);
            box-shadow: inset 0 -2px 0 rgba(0, 0, 0, 0.1);
        }

        .btn-primary:hover {
            box-shadow: var(--shadow-glow);
            filter: brightness(1.05);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
        }

        .btn-secondary {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.22);
            color: #fff;
        }

        .btn-secondary:hover {
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: 0 0 16px rgba(0, 240, 181, 0.15);
        }

        .btn-secondary:active {
            transform: scale(0.98);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }

        .btn-block {
            width: 100%;
        }

        /* ========== Header / Nav ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 64px;
            background: rgba(11, 19, 43, 0.82);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .header-inner {
            height: 64px;
            display: flex;
            align-items: center;
            gap: 32px;
        }

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

        .brand-icon {
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(0, 240, 181, 0.2), rgba(61, 139, 255, 0.2));
            border: 1px solid rgba(0, 240, 181, 0.3);
            border-radius: 9px;
            color: var(--accent);
            font-size: 16px;
            box-shadow: 0 0 12px rgba(0, 240, 181, 0.2);
        }

        .brand-text {
            font-size: 17px;
            font-weight: 700;
            letter-spacing: 0.01em;
            white-space: nowrap;
        }

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

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: 8px;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            border-radius: 8px;
            transition: all 0.2s ease;
            font-weight: 500;
            white-space: nowrap;
        }

        .main-nav a:hover {
            color: var(--accent);
            background: rgba(0, 240, 181, 0.06);
        }

        .main-nav a.active {
            color: var(--accent);
            background: rgba(0, 240, 181, 0.12);
        }

        .header-actions {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 10px;
            padding: 0 12px;
            height: 36px;
            gap: 8px;
            width: 200px;
            transition: border-color 0.2s;
        }

        .search-box:focus-within {
            border-color: rgba(0, 240, 181, 0.5);
        }

        .search-box i {
            color: var(--text-dim);
            font-size: 13px;
        }

        .search-box input {
            flex: 1;
            background: transparent;
            color: #fff;
            font-size: 13px;
            min-width: 0;
        }

        .search-box input::placeholder {
            color: var(--text-dim);
        }

        .search-box kbd {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-dim);
            font-size: 11px;
            padding: 2px 6px;
            border-radius: 5px;
            font-family: inherit;
            white-space: nowrap;
        }

        .menu-toggle {
            display: none;
            width: 38px;
            height: 38px;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 10px;
            color: #fff;
            font-size: 16px;
            cursor: pointer;
            transition: border-color 0.2s;
        }

        .menu-toggle:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

        .mobile-nav {
            display: none;
        }

        @media (max-width: 1023.98px) {
            .header-inner {
                gap: 12px;
            }
            .main-nav {
                display: none;
            }
            .search-box {
                display: none;
            }
            .menu-toggle {
                display: inline-flex;
                margin-left: 0;
            }
            .header-actions .btn {
                display: none;
            }
            .mobile-nav {
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(11, 19, 43, 0.96);
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                padding: 12px 20px 16px;
                display: none;
                flex-direction: column;
                gap: 4px;
                box-shadow: 0 18px 40px rgba(0, 0, 0, 0.5);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
            }
            .mobile-nav.is-open {
                display: flex;
            }
            .mobile-nav a {
                padding: 13px 10px;
                border-radius: 10px;
                font-size: 15px;
                color: rgba(255, 255, 255, 0.8);
                border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            }
            .mobile-nav a:hover,
            .mobile-nav a.active {
                background: rgba(0, 240, 181, 0.1);
                color: var(--accent);
            }
        }

        /* ========== Hero ========== */
        .category-hero {
            padding: 156px 0 80px;
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -100px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 240, 181, 0.12), transparent 65%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
            gap: 60px;
            align-items: center;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-dim);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

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

        .breadcrumb .sep {
            opacity: 0.5;
        }

        .breadcrumb .current {
            color: rgba(255, 255, 255, 0.8);
        }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-tag);
            padding: 7px 16px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 18px;
        }

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

        .category-hero h1 {
            font-size: clamp(40px, 5.2vw, 60px);
            letter-spacing: -0.025em;
            line-height: 1.1;
            margin-bottom: 18px;
        }

        .hero-subtitle {
            font-size: 17px;
            color: var(--text-sub);
            max-width: 480px;
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .hero-visual {
            position: relative;
        }

        .hero-visual .hero-img {
            width: 100%;
            border-radius: 20px;
            box-shadow: var(--shadow-card), 0 0 0 1px rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.06);
            aspect-ratio: 4/3;
            object-fit: cover;
        }

        .float-card {
            position: absolute;
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(28, 46, 74, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 14px;
            padding: 12px 16px;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
            font-size: 14px;
            color: rgba(255, 255, 255, 0.9);
        }

        .float-card i {
            color: var(--accent);
            font-size: 18px;
        }

        .float-card strong {
            font-size: 24px;
            color: var(--accent);
            line-height: 1;
        }

        .float-card-1 {
            top: -18px;
            left: -14px;
        }

        .float-card-2 {
            bottom: 32px;
            right: -10px;
        }

        .float-card span {
            display: block;
            font-size: 13px;
            color: var(--text-sub);
        }

        /* ========== Highlights ========== */
        .highlight-section {
            background: rgba(16, 31, 60, 0.35);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .highlight-anchor-nav {
            background: rgba(28, 46, 74, 0.55);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 24px;
            position: sticky;
            top: 96px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .highlight-anchor-nav h2 {
            font-size: 20px;
            margin-bottom: 8px;
        }

        .highlight-anchor-nav p {
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 20px;
        }

        .anchor-links {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .anchor-links a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 12px;
            border-radius: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            transition: all 0.2s;
            border: 1px solid transparent;
        }

        .anchor-links a i {
            color: var(--accent);
            font-size: 13px;
            opacity: 0.7;
        }

        .anchor-links a:hover {
            background: rgba(0, 240, 181, 0.08);
            color: var(--accent);
            border-color: rgba(0, 240, 181, 0.15);
        }

        .version-card {
            background: rgba(28, 46, 74, 0.45);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 28px;
            display: grid;
            grid-template-columns: 110px 1fr;
            gap: 24px;
            align-items: center;
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .version-card+.version-card {
            margin-top: 20px;
        }

        .version-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 240, 181, 0.35);
            box-shadow: var(--shadow-card), 0 0 24px rgba(0, 240, 181, 0.08);
        }

        .version-card img {
            width: 110px;
            height: 82px;
            object-fit: cover;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .version-card-content h3 {
            font-size: 22px;
            margin-bottom: 6px;
        }

        .version-card-content p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 12px;
        }

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

        .more-link i {
            font-size: 12px;
            transition: transform 0.2s;
        }

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

        /* ========== Flow ========== */
        .flow-section {
            background-image: linear-gradient(180deg, rgba(11, 19, 43, 0.9), rgba(11, 19, 43, 0.95)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .flow-step {
            background: rgba(16, 31, 60, 0.72);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            position: relative;
            overflow: hidden;
            transition: border-color 0.25s, box-shadow 0.25s;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.3);
        }

        .flow-step:hover {
            border-color: rgba(0, 240, 181, 0.35);
            box-shadow: 0 0 28px rgba(0, 240, 181, 0.08);
        }

        .step-num {
            font-size: 42px;
            font-weight: 800;
            color: rgba(0, 240, 181, 0.22);
            line-height: 1;
            margin-bottom: 18px;
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
        }

        .step-icon {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: rgba(0, 240, 181, 0.12);
            color: var(--accent);
            font-size: 17px;
            margin-bottom: 16px;
        }

        .flow-step h3 {
            font-size: 17px;
            margin-bottom: 8px;
        }

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

        /* ========== Resources ========== */
        .resources-grid {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 40px;
            align-items: start;
        }

        .sub-panel {
            background: rgba(16, 31, 60, 0.5);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }

        .sub-panel h3 {
            font-size: 18px;
            margin-bottom: 4px;
        }

        .sub-panel .panel-sub {
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 20px;
        }

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

        .icon-list a {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 16px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 12px;
            transition: all 0.2s;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
        }

        .icon-list a:hover {
            border-color: rgba(0, 240, 181, 0.35);
            background: rgba(0, 240, 181, 0.06);
            color: var(--accent);
            transform: translateX(4px);
        }

        .icon-list a i {
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: rgba(0, 240, 181, 0.12);
            color: var(--accent);
            font-size: 14px;
            flex-shrink: 0;
        }

        .icon-list .icon-blue {
            background: rgba(61, 139, 255, 0.15);
            color: var(--accent-blue);
        }

        .direction-cards {
            display: grid;
            gap: 12px;
        }

        .direction-card {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px;
            background: rgba(28, 46, 74, 0.55);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            transition: all 0.25s;
        }

        .direction-card:hover {
            border-color: rgba(0, 240, 181, 0.35);
            background: rgba(0, 240, 181, 0.06);
            transform: translateY(-3px);
        }

        .direction-card i {
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(0, 240, 181, 0.18), rgba(61, 139, 255, 0.18));
            color: var(--accent);
            font-size: 16px;
            flex-shrink: 0;
        }

        .direction-card .dc-body strong {
            display: block;
            font-size: 15px;
            margin-bottom: 2px;
        }

        .direction-card .dc-body span {
            font-size: 13px;
            color: var(--text-sub);
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: rgba(16, 31, 60, 0.3);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-wrap .accordion {
            background: transparent;
        }

        .faq-wrap .accordion-item {
            background: rgba(28, 46, 74, 0.55);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            margin-bottom: 14px;
            overflow: hidden;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: border-color 0.25s, box-shadow 0.25s;
        }

        .faq-wrap .accordion-item.is-active {
            border-color: rgba(0, 240, 181, 0.35);
            box-shadow: 0 0 20px rgba(0, 240, 181, 0.06);
        }

        .faq-wrap .accordion-title {
            background: transparent;
            border: none;
            color: rgba(255, 255, 255, 0.95);
            font-size: 16px;
            font-weight: 600;
            padding: 20px 28px;
            border-radius: var(--radius-card);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .faq-wrap .accordion-title:hover {
            background: rgba(0, 240, 181, 0.04);
            color: var(--accent);
        }

        .faq-wrap .accordion-title::before {
            content: "+";
            font-size: 22px;
            font-weight: 400;
            color: var(--accent);
            transition: transform 0.3s ease;
            flex-shrink: 0;
            margin-left: auto;
            order: 2;
        }

        .faq-wrap .accordion-item.is-active .accordion-title::before {
            transform: rotate(45deg);
        }

        .faq-wrap .accordion-content {
            background: transparent;
            border: none;
            color: var(--text-sub);
            padding: 0 28px 22px;
            font-size: 14px;
            line-height: 1.8;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 80px 0;
        }

        .cta-card {
            background: rgba(16, 31, 60, 0.8);
            border: 1px solid rgba(0, 240, 181, 0.22);
            border-radius: 20px;
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card), 0 0 40px rgba(0, 240, 181, 0.06);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .cta-card::before {
            content: "";
            position: absolute;
            top: -60%;
            left: -30%;
            width: 60%;
            height: 200%;
            background: radial-gradient(circle, rgba(0, 240, 181, 0.1), transparent 70%);
            pointer-events: none;
        }

        .cta-card h2 {
            font-size: clamp(26px, 3.6vw, 38px);
            margin-bottom: 12px;
        }

        .cta-card>p {
            color: var(--text-sub);
            font-size: 15px;
            margin-bottom: 28px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            max-width: 460px;
            margin: 0 auto 12px;
        }

        .cta-form input[type="email"] {
            flex: 1;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-input);
            padding: 12px 18px;
            color: #fff;
            font-size: 14px;
            min-width: 0;
            transition: border-color 0.2s;
        }

        .cta-form input[type="email"]::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

        .cta-form input[type="email"]:focus {
            border-color: rgba(0, 240, 181, 0.5);
            box-shadow: 0 0 0 3px rgba(0, 240, 181, 0.1);
        }

        .cta-form .btn {
            flex-shrink: 0;
        }

        .cta-note {
            font-size: 13px;
            color: var(--text-dim);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #070C1A;
            border-top: 1px solid rgba(0, 240, 181, 0.12);
            padding: 56px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .logo-icon {
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 240, 181, 0.14);
            border: 1px solid rgba(0, 240, 181, 0.25);
            border-radius: 9px;
            color: var(--accent);
            font-size: 15px;
        }

        .footer-logo-text {
            font-size: 17px;
            font-weight: 700;
        }

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

        .footer-brand p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.45);
            margin-bottom: 16px;
        }

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

        .footer-col a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }

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

        .footer-col a i {
            font-size: 9px;
            color: rgba(255, 255, 255, 0.3);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 24px;
            flex-wrap: wrap;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-dim);
        }

        .footer-links a {
            font-size: 13px;
            color: var(--text-dim);
        }

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

        /* ========== Responsive ========== */
        @media (max-width: 1023.98px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 48px;
            }
            .hero-visual {
                max-width: 560px;
            }
            .flow-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .resources-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .highlight-anchor-nav {
                position: static;
                margin-bottom: 32px;
            }
            .anchor-links {
                display: grid;
                grid-template-columns: 1fr 1fr;
            }
            .version-card {
                grid-template-columns: 90px 1fr;
                padding: 22px;
            }
            .version-card img {
                width: 90px;
                height: 76px;
            }
        }

        @media (max-width: 639.98px) {
            .section {
                padding: 48px 0;
            }
            .section-head {
                margin-bottom: 32px;
            }
            .category-hero {
                padding: 120px 0 48px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .flow-grid {
                grid-template-columns: 1fr;
            }
            .anchor-links {
                grid-template-columns: 1fr;
            }
            .version-card {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .version-card img {
                width: 100%;
                height: 150px;
            }
            .float-card-1 {
                top: -10px;
                left: 8px;
            }
            .float-card-2 {
                bottom: 16px;
                right: 8px;
            }
            .float-card {
                padding: 10px 12px;
                font-size: 12px;
            }
            .float-card strong {
                font-size: 18px;
            }
            .cta-card {
                padding: 36px 22px;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-form .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .faq-wrap .accordion-title {
                padding: 16px 20px;
                font-size: 15px;
            }
            .faq-wrap .accordion-content {
                padding: 0 20px 18px;
            }
            .sub-panel {
                padding: 20px;
            }
            .icon-list a {
                padding: 12px 14px;
            }
        }

/* roulang page: article */
:root {
    --bg-primary: #0B132B;
    --bg-panel: #101F3C;
    --bg-card: rgba(28, 46, 74, 0.55);
    --bg-card-solid: #1C2E4A;
    --accent: #00F0B5;
    --accent-blue: #3D8BFF;
    --text-white: #FFFFFF;
    --text-strong: rgba(255,255,255,0.92);
    --text-normal: rgba(255,255,255,0.78);
    --text-weak: rgba(255,255,255,0.55);
    --text-dim: rgba(255,255,255,0.35);
    --border-light: rgba(255,255,255,0.08);
    --border-glow: rgba(0,240,181,0.35);
    --radius-card: 16px;
    --radius-btn: 10px;
    --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
    --glow-accent: 0 0 20px rgba(0,240,181,0.45);
    --spacing-section: 80px;
    --spacing-container: 1200px;
    --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    --font-mono: "SF Mono", "JetBrains Mono", Consolas, monospace;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-normal);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    background-image: radial-gradient(ellipse at 20% 0%, rgba(61,139,255,0.08) 0%, transparent 60%), radial-gradient(ellipse at 80% 20%, rgba(0,240,181,0.04) 0%, transparent 50%);
    background-attachment: fixed;
}

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

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

ul, ol {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

input {
    font-family: inherit;
}

.container {
    max-width: var(--spacing-container);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Header 导航栏 ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: 64px;
    background: rgba(11, 19, 43, 0.82);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 24px;
}

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

.logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-blue) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-primary);
    font-size: 16px;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-white);
    letter-spacing: -0.5px;
}

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

.main-nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.main-nav a {
    font-size: 14px;
    color: var(--text-normal);
    padding: 8px 4px;
    position: relative;
    transition: color 0.3s;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.3s;
}

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

.main-nav a:hover::after,
.main-nav a.active::after {
    transform: scaleX(1);
}

.main-nav a.active {
    color: var(--accent);
    font-weight: 600;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border-light);
    border-radius: 10px;
    padding: 6px 12px;
    width: 200px;
    color: var(--text-weak);
    transition: border-color 0.3s;
}

.search-box:focus-within {
    border-color: var(--accent);
}

.search-box input {
    background: none;
    border: none;
    outline: none;
    color: var(--text-white);
    font-size: 13px;
    width: 100%;
}

.search-box input::placeholder {
    color: var(--text-weak);
}

.search-kbd {
    font-size: 11px;
    padding: 2px 6px;
    background: rgba(255,255,255,0.08);
    border-radius: 4px;
    color: var(--text-weak);
    font-family: var(--font-mono);
    white-space: nowrap;
}

.header-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 20px;
    border-radius: 10px;
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s;
    text-decoration: none;
}

.header-btn:hover {
    background: var(--accent);
    color: var(--bg-primary);
    box-shadow: var(--glow-accent);
}

.hamburger {
    display: none;
    font-size: 20px;
    color: var(--text-white);
    padding: 8px;
}

.mobile-menu {
    display: none;
    background: var(--bg-panel);
    padding: 16px 24px;
    border-top: 1px solid var(--border-light);
}

.mobile-menu a {
    display: block;
    padding: 12px 0;
    color: var(--text-normal);
    font-size: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.04);
}

.mobile-menu a:last-child {
    border-bottom: none;
}

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

/* ===== 面包屑 ===== */
.breadcrumb {
    padding: 100px 0 16px;
    font-size: 13px;
    color: var(--text-weak);
}

.breadcrumb a {
    color: var(--text-weak);
    transition: color 0.3s;
}

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

.breadcrumb i {
    font-size: 10px;
    margin: 0 8px;
    color: var(--text-dim);
}

.breadcrumb span {
    color: var(--text-normal);
}

/* ===== 文章头部区 ===== */
.article-header {
    position: relative;
    padding: 48px 0 32px;
    border-radius: 24px;
    margin-bottom: 24px;
    background-image: linear-gradient(180deg, rgba(16,31,60,0.7) 0%, rgba(11,19,43,0.2) 100%), url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    border: 1px solid var(--border-light);
    overflow: hidden;
}

.article-header .header-content {
    max-width: 760px;
    margin: 0 auto;
    text-align: center;
    padding: 20px;
}

.article-category-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    background: rgba(0,240,181,0.12);
    border: 1px solid rgba(0,240,181,0.25);
    border-radius: 999px;
    color: var(--accent);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
}

.article-header h1 {
    font-size: clamp(30px, 4vw, 44px);
    font-weight: 800;
    color: var(--text-white);
    line-height: 1.3;
    margin-bottom: 20px;
}

.article-meta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
    color: var(--text-weak);
    font-size: 14px;
}

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

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

/* ===== 正文区 ===== */
.article-content-wrap {
    max-width: 760px;
    margin: 0 auto;
    padding: 40px 0 20px;
}

.article-content {
    font-size: 16px;
    line-height: 1.9;
    color: var(--text-normal);
}

.article-content p {
    margin-bottom: 1.8em;
}

.article-content h2 {
    font-size: 28px;
    color: var(--text-white);
    font-weight: 700;
    margin: 2em 0 0.8em;
}

.article-content h3 {
    font-size: 22px;
    color: var(--text-white);
    font-weight: 700;
    margin: 1.8em 0 0.8em;
    padding-left: 14px;
    border-left: 4px solid var(--accent);
}

.article-content ul,
.article-content ol {
    margin: 1.5em 0;
    padding-left: 24px;
}

.article-content ul li {
    list-style: disc;
    margin-bottom: 8px;
}

.article-content ol li {
    list-style: decimal;
    margin-bottom: 8px;
}

.article-content img {
    width: 100%;
    border-radius: 12px;
    margin: 2em 0;
    border: 1px solid var(--border-light);
}

.article-content blockquote {
    background: rgba(255,255,255,0.04);
    border-left: 4px solid rgba(0,240,181,0.5);
    padding: 20px 24px;
    border-radius: 12px;
    color: var(--text-weak);
    margin: 1.8em 0;
    font-style: italic;
}

.article-content a {
    color: var(--accent);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s;
}

.article-content a:hover {
    border-bottom-color: var(--accent);
}

/* ===== 空态 ===== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 24px;
    backdrop-filter: blur(12px);
}

.empty-state i {
    font-size: 44px;
    color: var(--text-dim);
    margin-bottom: 16px;
}

.empty-state p {
    color: var(--text-weak);
    font-size: 16px;
}

.empty-state a {
    display: inline-block;
    margin-top: 16px;
    color: var(--accent);
    font-weight: 600;
    border-bottom: 1px solid transparent;
}

.empty-state a:hover {
    border-bottom-color: var(--accent);
}

/* ===== 延伸阅读 ===== */
.related-section {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    font-size: 28px;
    color: var(--text-white);
    font-weight: 700;
    margin-bottom: 8px;
}

.section-subtitle {
    text-align: center;
    font-size: 15px;
    color: var(--text-weak);
    margin-bottom: 40px;
}

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

.related-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-card);
    padding: 28px;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.related-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-glow);
    box-shadow: var(--shadow-card);
}

.related-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0,240,181,0.12);
    color: var(--accent);
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 16px;
    align-self: flex-start;
}

.related-card h4 {
    font-size: 17px;
    color: var(--text-white);
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 10px;
}

.related-card p {
    font-size: 14px;
    color: var(--text-weak);
    margin-bottom: 16px;
    line-height: 1.6;
    flex-grow: 1;
}

.related-meta {
    font-size: 13px;
    color: var(--text-dim);
    font-family: var(--font-mono);
    display: flex;
    align-items: center;
    gap: 6px;
}

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

/* ===== 返回按钮 ===== */
.back-button-wrap {
    text-align: center;
    padding: 40px 0 80px;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 28px;
    border-radius: var(--radius-btn);
    background: transparent;
    border: 1px solid rgba(255,255,255,0.2);
    color: var(--text-white);
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s;
    text-decoration: none;
}

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 12px rgba(0,240,181,0.2);
}

/* ===== CTA 区块 ===== */
.cta-section {
    padding: 40px 0 100px;
}

.cta-card {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    align-items: center;
    background: linear-gradient(135deg, rgba(16,31,60,0.85) 0%, rgba(11,19,43,0.95) 100%);
    border: 1px solid var(--border-light);
    border-radius: 24px;
    padding: 48px;
    position: relative;
    overflow: hidden;
}

.cta-card::before {
    content: '';
    position: absolute;
    top: -60%;
    left: -30%;
    width: 80%;
    height: 80%;
    background: radial-gradient(circle, rgba(0,240,181,0.08) 0%, transparent 60%);
    pointer-events: none;
}

.cta-content h2 {
    font-size: clamp(24px, 3vw, 34px);
    color: var(--text-white);
    font-weight: 700;
    margin-bottom: 12px;
}

.cta-content p {
    color: var(--text-weak);
    font-size: 15px;
    margin-bottom: 28px;
    max-width: 400px;
}

.cta-img {
    border-radius: 16px;
    overflow: hidden;
}

.cta-img img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    border-radius: 16px;
    border: 1px solid var(--border-light);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: var(--radius-btn);
    background: var(--accent);
    color: var(--bg-primary);
    font-size: 15px;
    font-weight: 700;
    transition: all 0.3s;
    box-shadow: inset 0 -2px 0 rgba(0,0,0,0.1);
    text-decoration: none;
    border: none;
}

.btn-primary:hover {
    box-shadow: var(--glow-accent);
    transform: translateY(-1px);
}

.btn-primary:focus,
.btn-secondary:focus,
.header-btn:focus,
.main-nav a:focus,
.related-card:focus {
    outline: 2px solid rgba(0,240,181,0.4);
    outline-offset: 2px;
}

/* ===== 页脚 ===== */
.site-footer {
    background: #070C1A;
    border-top: 1px solid rgba(0,240,181,0.1);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.footer-logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-white);
}

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

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

.footer-col h4 {
    font-size: 14px;
    color: var(--text-dim);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    font-size: 14px;
    color: var(--text-weak);
    transition: color 0.3s, padding-left 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.footer-col ul li a i {
    font-size: 10px;
    color: var(--accent);
    opacity: 0.7;
}

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

.footer-bottom {
    border-top: 1px solid var(--border-light);
    padding: 24px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-dim);
}

.footer-links a {
    color: var(--text-dim);
    font-size: 13px;
    transition: color 0.3s;
}

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

/* ===== 响应式断点 ===== */
@media screen and (max-width: 1023.98px) {
    .main-nav {
        display: none;
    }

    .search-box {
        display: none;
    }

    .hamburger {
        display: inline-flex;
    }

    .mobile-menu.is-open {
        display: block;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        z-index: 99;
        box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    }

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

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

    .cta-card {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

@media screen and (max-width: 639.98px) {
    .container {
        padding: 0 20px;
    }

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

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

    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .cta-card {
        padding: 32px 24px;
    }

    .article-meta {
        gap: 12px;
        font-size: 13px;
    }

    .logo-text {
        font-size: 17px;
    }

    .header-btn {
        display: none;
    }

    .article-header {
        padding: 32px 0 24px;
    }
}

/* roulang page: category3 */
:root {
  --bg-deep: #0B132B;
  --bg-panel: #101F3C;
  --bg-card: #1C2E4A;
  --bg-dark: #070C1A;
  --accent: #00F0B5;
  --accent-dim: rgba(0, 240, 181, 0.15);
  --accent-blue: #3D8BFF;
  --text: #ffffff;
  --text-80: rgba(255, 255, 255, 0.8);
  --text-70: rgba(255, 255, 255, 0.7);
  --text-60: rgba(255, 255, 255, 0.6);
  --text-40: rgba(255, 255, 255, 0.4);
  --border: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-tag: 999px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --glow: 0 0 20px rgba(0, 240, 181, 0.45);
  --section-space: 80px;
  --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 800px 400px at 85% -10%, rgba(61, 139, 255, 0.14), transparent 60%),
    radial-gradient(ellipse 600px 300px at 10% 30%, rgba(0, 240, 181, 0.06), transparent 60%),
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 44px 44px, 44px 44px;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

button {
  font-family: inherit;
  border: none;
  cursor: pointer;
}

input {
  font-family: inherit;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 64px;
  background: rgba(11, 19, 43, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 20px;
}

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

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0B132B;
  font-size: 14px;
  box-shadow: 0 0 14px rgba(0, 240, 181, 0.25);
}

.brand-text {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: #fff;
  white-space: nowrap;
}

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

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: center;
}

.main-nav a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 14px;
  color: var(--text-80);
  border-radius: 8px;
  transition: all 0.2s ease;
  position: relative;
}

.main-nav a:hover {
  color: var(--accent);
  background: rgba(0, 240, 181, 0.06);
}

.main-nav a.active {
  color: var(--accent);
  background: rgba(0, 240, 181, 0.1);
}

.main-nav a.active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(0, 240, 181, 0.5);
}

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

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  padding: 0 10px;
  height: 36px;
  width: 180px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.search-box:focus-within {
  border-color: rgba(0, 240, 181, 0.4);
  box-shadow: 0 0 0 3px rgba(0, 240, 181, 0.12);
}

.search-box i {
  color: var(--text-40);
  font-size: 13px;
}

.search-box input {
  background: transparent;
  border: none;
  outline: none;
  color: #fff;
  font-size: 13px;
  width: 100%;
}

.search-box input::placeholder {
  color: var(--text-40);
}

.search-box kbd {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 5px;
  font-size: 10px;
  padding: 2px 6px;
  color: var(--text-40);
  white-space: nowrap;
}

.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  color: var(--text-70);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: all 0.2s ease;
}

.icon-btn:hover {
  color: var(--accent);
  border-color: rgba(0, 240, 181, 0.3);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  padding: 12px 24px;
  font-size: 15px;
  line-height: 1.4;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn:focus-visible {
  outline: 2px solid rgba(0, 240, 181, 0.4);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--accent);
  color: #0B132B;
  box-shadow: inset 0 -2px 0 rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
  box-shadow: var(--glow), inset 0 -2px 0 rgba(0, 0, 0, 0.1);
  transform: translateY(-1px);
  filter: brightness(1.05);
}

.btn-secondary {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 14px rgba(0, 240, 181, 0.15);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
  border-radius: 8px;
}

.menu-toggle {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  color: #fff;
  font-size: 15px;
  align-items: center;
  justify-content: center;
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: rgba(11, 19, 43, 0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px 20px;
  z-index: 99;
}

.mobile-menu.open {
  display: block;
}

.mobile-menu a {
  display: block;
  padding: 12px 8px;
  font-size: 15px;
  color: var(--text-80);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

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

/* ===== Breadcrumb ===== */
.breadcrumb-bar {
  padding: 16px 0 0;
  font-size: 13px;
  color: var(--text-40);
}

.breadcrumb-bar a {
  color: var(--text-60);
}

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

.breadcrumb-bar .sep {
  margin: 0 8px;
}

.breadcrumb-bar .current {
  color: var(--text-40);
}

/* ===== Page Hero ===== */
.page-hero {
  padding: 64px 0 56px;
  position: relative;
}

.page-hero.hero-report {
  background: url('/assets/images/backpic/back-2.webp') right center / cover no-repeat;
  border-bottom: 1px solid var(--border);
}

.page-hero.hero-report::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11, 19, 43, 0.96) 30%, rgba(11, 19, 43, 0.7) 70%, rgba(11, 19, 43, 0.4));
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 48px;
}

.hero-content {
  flex: 1.1;
}

.hero-media {
  flex: 0.9;
  display: none;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius-tag);
  padding: 7px 16px;
  font-size: 13px;
  color: var(--accent);
  backdrop-filter: blur(8px);
  margin-bottom: 20px;
}

.hero-tag i {
  font-size: 12px;
}

.page-hero h1 {
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}

.page-hero h1 .highlight {
  color: var(--accent);
}

.page-hero .hero-desc {
  font-size: 16px;
  color: var(--text-70);
  max-width: 560px;
  margin-bottom: 28px;
  line-height: 1.8;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== Stats bar ===== */
.stats-bar {
  padding: 32px 0;
  background: rgba(16, 31, 60, 0.5);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.stat-card {
  text-align: center;
  padding: 8px;
}

.stat-card .num {
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
  font-family: 'SF Mono', 'Courier New', monospace;
}

.stat-card .label {
  font-size: 13px;
  color: var(--text-60);
  margin-top: 6px;
  letter-spacing: 1px;
}

/* ===== Report Index Section ===== */
.report-index {
  padding: var(--section-space) 0;
}

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

.section-header.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-header .eyebrow {
  display: inline-block;
  font-size: 13px;
  color: var(--accent);
  background: var(--accent-dim);
  border-radius: var(--radius-tag);
  padding: 6px 14px;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.section-header h2 {
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 14px;
}

.section-header p {
  font-size: 15px;
  color: var(--text-60);
  line-height: 1.8;
}

.report-anchors {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.anchor-row {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
  align-items: center;
  background: rgba(28, 46, 74, 0.55);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.anchor-row:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 240, 181, 0.3);
  box-shadow: var(--shadow);
}

.anchor-row.reverse .anchor-text {
  order: 2;
}

.anchor-row.reverse .anchor-img {
  order: 1;
}

.anchor-text .index-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: rgba(0, 240, 181, 0.12);
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
  font-family: 'SF Mono', 'Courier New', monospace;
}

.anchor-text h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.4;
}

.anchor-text p {
  font-size: 14px;
  color: var(--text-70);
  line-height: 1.8;
  margin-bottom: 16px;
}

.anchor-text .tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.tag {
  display: inline-block;
  font-size: 12px;
  color: var(--text-60);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius-tag);
  padding: 4px 12px;
}

.anchor-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

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

.anchor-link:hover i {
  transform: translateX(4px);
}

.anchor-img {
  border-radius: 14px;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--bg-panel);
}

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

.anchor-row:hover .anchor-img img {
  transform: scale(1.04);
}

/* ===== Highlight Section ===== */
.highlight-section {
  padding: 0 0 var(--section-space);
}

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

.highlight-card {
  background: rgba(28, 46, 74, 0.45);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.highlight-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 240, 181, 0.25);
}

.highlight-card .icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  background: rgba(0, 240, 181, 0.12);
  color: var(--accent);
  margin-bottom: 18px;
}

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

.highlight-card p {
  font-size: 14px;
  color: var(--text-60);
  line-height: 1.8;
}

/* ===== Audience Section ===== */
.audience-section {
  padding: var(--section-space) 0;
  background: rgba(16, 31, 60, 0.4);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.audience-card {
  background: rgba(28, 46, 74, 0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
  overflow: hidden;
  transition: all 0.2s ease;
}

.audience-card:hover {
  border-color: rgba(0, 240, 181, 0.3);
  box-shadow: var(--shadow);
}

.audience-card .role {
  font-size: 12px;
  color: var(--text-40);
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.audience-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 14px;
}

.audience-card ul {
  list-style: none;
  padding: 0;
}

.audience-card ul li {
  position: relative;
  padding: 5px 0 5px 24px;
  font-size: 14px;
  color: var(--text-70);
  line-height: 1.7;
}

.audience-card ul li::before {
  content: "\f00c";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 5px;
  font-size: 12px;
  color: var(--accent);
}

/* ===== Process Section ===== */
.process-section {
  padding: var(--section-space) 0;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

.process-steps::before {
  content: "";
  position: absolute;
  top: 32px;
  left: 12%;
  right: 12%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 240, 181, 0.3), transparent);
}

.process-step {
  text-align: center;
  padding: 0 8px;
  position: relative;
  z-index: 1;
}

.process-step .step-num {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid rgba(0, 240, 181, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  box-shadow: 0 0 20px rgba(0, 240, 181, 0.1);
}

.process-step h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.process-step p {
  font-size: 13px;
  color: var(--text-60);
  line-height: 1.7;
}

/* ===== CTA Section ===== */
.cta-section {
  padding: 0 0 var(--section-space);
}

.cta-panel {
  background: linear-gradient(135deg, rgba(16, 31, 60, 0.9), rgba(28, 46, 74, 0.8));
  border: 1px solid rgba(0, 240, 181, 0.2);
  border-radius: 24px;
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-panel::before {
  content: "";
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(0, 240, 181, 0.15), transparent 70%);
  pointer-events: none;
}

.cta-panel h2 {
  font-size: clamp(26px, 3.6vw, 36px);
  font-weight: 700;
  margin-bottom: 14px;
  position: relative;
}

.cta-panel p {
  font-size: 15px;
  color: var(--text-70);
  max-width: 480px;
  margin: 0 auto 28px;
  position: relative;
}

.cta-panel .cta-form {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}

.cta-panel .cta-form input {
  width: 300px;
  max-width: 100%;
  height: 46px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  padding: 0 16px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.cta-panel .cta-form input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 240, 181, 0.12);
}

.cta-panel .cta-form input::placeholder {
  color: var(--text-40);
}

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

.faq-grid {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: rgba(28, 46, 74, 0.5);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item.open {
  border-color: rgba(0, 240, 181, 0.3);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  width: 100%;
  background: transparent;
  color: var(--text);
  font-size: 16px;
  font-weight: 600;
  text-align: left;
}

.faq-question .faq-icon {
  color: var(--accent);
  font-size: 14px;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-70);
  line-height: 1.8;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-dark);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 56px 0 0;
  position: relative;
  z-index: 1;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 480px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 240, 181, 0.4), transparent);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-logo .logo-icon {
  width: 30px;
  height: 30px;
  border-radius: 8px;
}

.footer-logo-text {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}

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

.footer-brand p {
  font-size: 13px;
  color: var(--text-40);
  line-height: 1.8;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-40);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: 14px;
  color: var(--text-60);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s ease;
}

.footer-col ul li a i {
  font-size: 9px;
  color: var(--text-40);
  transition: color 0.2s ease, transform 0.2s ease;
}

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

.footer-col ul li a:hover i {
  color: var(--accent);
  transform: translateX(2px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-40);
}

.footer-links a {
  font-size: 13px;
  color: var(--text-40);
}

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

/* ===== Responsive ===== */
@media screen and (min-width: 640px) and (max-width: 1023px) {
  .main-nav {
    display: none;
  }

  .search-box {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .anchor-row {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .anchor-row.reverse .anchor-text {
    order: 1;
  }

  .anchor-row.reverse .anchor-img {
    order: 2;
  }

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

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

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 16px;
  }

  .process-steps::before {
    display: none;
  }

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

  .hero-media {
    display: none;
  }

  .hero-inner {
    gap: 0;
  }
}

@media screen and (max-width: 639px) {
  :root {
    --section-space: 48px;
  }

  .site-header .nav-wrap {
    gap: 10px;
  }

  .main-nav {
    display: none;
  }

  .search-box {
    display: none;
  }

  .icon-btn {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .btn-sm {
    padding: 7px 12px;
    font-size: 13px;
  }

  .page-hero {
    padding: 40px 0 36px;
  }

  .page-hero h1 {
    font-size: 32px;
  }

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

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .stats-grid .stat-card:nth-child(n+3) {
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    padding-top: 20px;
  }

  .anchor-row {
    grid-template-columns: 1fr;
    padding: 20px;
    gap: 16px;
  }

  .anchor-row.reverse .anchor-text {
    order: 1;
  }

  .anchor-row.reverse .anchor-img {
    order: 2;
  }

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

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

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

  .process-steps::before {
    display: none;
  }

  .cta-panel {
    padding: 36px 20px;
  }

  .cta-panel .cta-form input {
    width: 100%;
  }

  .cta-panel .cta-form .btn {
    width: 100%;
  }

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .breadcrumb-bar {
    font-size: 12px;
  }
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --bg-deep: #0B132B;
            --bg-panel: #101F3C;
            --bg-card: #1C2E4A;
            --accent: #00F0B5;
            --accent-blue: #3D8BFF;
            --text-white: #FFFFFF;
            --text-dim: rgba(255, 255, 255, 0.6);
            --text-mute: rgba(255, 255, 255, 0.4);
            --border: rgba(255, 255, 255, 0.08);
            --border-bright: rgba(0, 240, 181, 0.3);
            --radius-lg: 16px;
            --radius-md: 10px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.06);
            --shadow-glow: 0 0 20px rgba(0, 240, 181, 0.45);
            --font-main: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-mono: "SF Mono", Consolas, "Courier New", monospace;
            --section-gap: 80px;
            --section-gap-mobile: 48px;
            --container-max: 1200px;
            --header-height: 68px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

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

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            background:
                radial-gradient(ellipse 60% 40% at 20% 0%, rgba(61, 139, 255, 0.10) 0%, transparent 100%),
                radial-gradient(ellipse 40% 30% at 85% 20%, rgba(0, 240, 181, 0.06) 0%, transparent 100%),
                linear-gradient(rgba(255, 255, 255, 0.012) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.012) 1px, transparent 1px);
            background-size: 100% 100%, 100% 100%, 40px 40px, 40px 40px;
            pointer-events: none;
            z-index: 0;
        }

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

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color .25s ease, border-color .25s ease, background .25s ease, box-shadow .25s ease;
        }

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container,
        .grid-container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
            width: 100%;
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: var(--header-height);
            background: rgba(11, 19, 43, 0.82);
            -webkit-backdrop-filter: blur(20px);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
        }

        .nav-container {
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            text-decoration: none;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-blue) 100%);
            border-radius: 10px;
            color: var(--bg-deep);
            font-size: 18px;
            box-shadow: 0 0 14px rgba(0, 240, 181, 0.25);
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

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

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .main-nav a {
            color: rgba(255, 255, 255, 0.72);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 999px;
            border: 1px solid transparent;
            transition: all .25s ease;
        }

        .main-nav a:hover {
            color: var(--accent);
            background: rgba(0, 240, 181, 0.06);
        }

        .main-nav a.active {
            color: var(--accent);
            background: rgba(0, 240, 181, 0.10);
            border-color: rgba(0, 240, 181, 0.18);
        }

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

        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 6px 10px;
            width: 200px;
            color: var(--text-mute);
            transition: border-color .25s ease, background .25s ease;
        }

        .search-box:focus-within {
            border-color: rgba(0, 240, 181, 0.3);
            background: rgba(255, 255, 255, 0.08);
        }

        .search-box i {
            font-size: 13px;
        }

        .search-box input {
            flex: 1;
            background: transparent;
            color: var(--text-white);
            font-size: 13px;
            width: 100%;
        }

        .search-box input::placeholder {
            color: var(--text-mute);
        }

        .search-box kbd {
            font-family: var(--font-mono);
            font-size: 11px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--border);
            padding: 1px 6px;
            border-radius: 6px;
            color: var(--text-mute);
            white-space: nowrap;
        }

        .icon-btn {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            border-radius: 10px;
            color: var(--text-dim);
            font-size: 14px;
            cursor: pointer;
            transition: all .25s ease;
        }

        .icon-btn:hover {
            color: var(--accent);
            border-color: rgba(0, 240, 181, 0.3);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 14px;
            padding: 11px 22px;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: all .25s ease;
            border: 1px solid transparent;
            line-height: 1.4;
            text-decoration: none;
        }

        .btn:focus-visible {
            outline: 2px solid rgba(0, 240, 181, 0.4);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--accent);
            color: var(--bg-deep);
            border-color: var(--accent);
            box-shadow: inset 0 -2px 0 rgba(0, 0, 0, 0.1);
        }

        .btn-primary:hover {
            box-shadow: 0 0 20px rgba(0, 240, 181, 0.45), inset 0 -2px 0 rgba(0, 0, 0, 0.08);
            transform: translateY(-1px);
            color: var(--bg-deep);
        }

        .btn-secondary {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-white);
        }

        .btn-secondary:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(0, 240, 181, 0.04);
        }

        .btn-sm {
            padding: 8px 14px;
            font-size: 13px;
        }

        .btn-block {
            width: 100%;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: 8px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all .25s ease;
        }

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

        .hamburger:hover span {
            background: var(--accent);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            z-index: 99;
            background: rgba(11, 19, 43, 0.96);
            -webkit-backdrop-filter: blur(24px);
            backdrop-filter: blur(24px);
            border-bottom: 1px solid var(--border);
            padding: 20px;
            transform: translateY(-12px);
            opacity: 0;
            visibility: hidden;
            transition: all .3s ease;
        }

        .mobile-menu.open {
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
        }

        .mobile-menu .mobile-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            margin-bottom: 16px;
        }

        .mobile-menu .mobile-nav a {
            color: var(--text-dim);
            font-size: 16px;
            padding: 12px 14px;
            border-radius: 10px;
            border: 1px solid transparent;
        }

        .mobile-menu .mobile-nav a:hover,
        .mobile-menu .mobile-nav a.active {
            color: var(--accent);
            background: rgba(0, 240, 181, 0.06);
            border-color: rgba(0, 240, 181, 0.12);
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--text-mute);
            margin-bottom: 18px;
        }

        .breadcrumb a {
            color: var(--text-mute);
            transition: color .25s ease;
        }

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

        .breadcrumb .sep {
            color: var(--text-mute);
            font-size: 11px;
        }

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

        /* ===== 页面 Hero ===== */
        .page-hero {
            position: relative;
            padding: calc(var(--header-height) + 60px) 0 60px;
            background:
                linear-gradient(180deg, rgba(11, 19, 43, 0.95) 0%, rgba(11, 19, 43, 0.85) 100%),
                url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 6px 14px;
            font-size: 13px;
            color: var(--text-dim);
            font-weight: 500;
            margin-bottom: 20px;
        }

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

        .page-hero h1 {
            font-size: clamp(34px, 4.5vw, 48px);
            font-weight: 700;
            line-height: 1.2;
            color: var(--text-white);
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .page-hero h1 .accent {
            color: var(--accent);
        }

        .page-hero .hero-subtitle {
            font-size: 16px;
            color: var(--text-dim);
            max-width: 520px;
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .hero-visual {
            position: relative;
            min-height: 320px;
        }

        .hero-visual .visual-main {
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            background: var(--bg-card);
        }

        .hero-visual .visual-main img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            opacity: 0.9;
        }

        .hero-visual .visual-card {
            position: absolute;
            background: rgba(28, 46, 74, 0.72);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 14px;
            padding: 14px 18px;
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: center;
            gap: 12px;
            min-width: 160px;
        }

        .hero-visual .visual-card i {
            font-size: 20px;
            color: var(--accent);
        }

        .hero-visual .visual-card span {
            font-size: 12px;
            color: var(--text-dim);
        }

        .hero-visual .visual-card strong {
            font-size: 14px;
            color: var(--text-white);
            font-weight: 600;
        }

        .hero-visual .vc-1 {
            top: 12px;
            right: -6px;
        }

        .hero-visual .vc-2 {
            bottom: 8px;
            left: -6px;
        }

        /* ===== 数据条 ===== */
        .data-bar {
            padding: 40px 0;
            border-bottom: 1px solid var(--border);
            background: rgba(16, 31, 60, 0.4);
        }

        .stat-item {
            text-align: center;
            padding: 16px 10px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid var(--border);
            transition: all .25s ease;
        }

        .stat-item:hover {
            border-color: rgba(0, 240, 181, 0.2);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .stat-item strong {
            display: block;
            font-size: 30px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 4px;
            font-family: var(--font-mono);
        }

        .stat-item span {
            font-size: 13px;
            color: var(--text-dim);
        }

        /* ===== 通用 section ===== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section:nth-child(even) {
            background: rgba(16, 31, 60, 0.25);
        }

        .section-header {
            max-width: 620px;
            margin-bottom: 44px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(0, 240, 181, 0.08);
            border: 1px solid rgba(0, 240, 181, 0.15);
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .section-header h2 {
            font-size: clamp(28px, 3.5vw, 38px);
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-white);
            margin-bottom: 12px;
        }

        .section-header p {
            font-size: 15px;
            color: var(--text-dim);
            line-height: 1.8;
        }

        /* ===== 卖点区 ===== */
        .features-wrap {
            display: flex;
            flex-direction: column;
            gap: 60px;
        }

        .feature-row {
            align-items: center;
        }

        .feature-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            background: var(--bg-card);
        }

        .feature-image img {
            width: 100%;
            height: 280px;
            object-fit: cover;
        }

        .feature-col {
            padding: 10px;
        }

        .feature-col h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-white);
        }

        .feature-col .desc {
            color: var(--text-dim);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 18px;
        }

        .feature-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 22px;
        }

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.6;
        }

        .feature-list li i {
            color: var(--accent);
            font-size: 14px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .feature-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
        }

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

        /* ===== 精选内容锚点块 ===== */
        .topics-section {
            padding: var(--section-gap) 0;
        }

        .topic-card {
            height: 100%;
            display: flex;
            flex-direction: column;
            background: rgba(28, 46, 74, 0.5);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all .3s ease;
            position: relative;
            overflow: hidden;
        }

        .topic-card:hover {
            border-color: rgba(0, 240, 181, 0.3);
            transform: translateY(-4px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
        }

        .topic-card .topic-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 16px;
        }

        .topic-card .topic-img {
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 16px;
            background: var(--bg-panel);
            border: 1px solid var(--border);
        }

        .topic-card .topic-img img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }

        .topic-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 10px;
        }

        .topic-card p {
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.8;
            flex: 1;
        }

        .topic-card .topic-link {
            margin-top: 18px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
        }

        .topic-card .topic-link:hover {
            gap: 10px;
        }

        .topic-tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(0, 240, 181, 0.1);
            padding: 4px 12px;
            border-radius: 999px;
            white-space: nowrap;
        }

        .topic-num {
            font-size: 28px;
            font-weight: 700;
            color: rgba(255, 255, 255, 0.1);
            font-family: var(--font-mono);
            line-height: 1;
        }

        /* 延伸导航 */
        .sub-nav-block {
            margin-top: 32px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 16px;
        }

        .sub-nav-card {
            background: var(--bg-panel);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 20px;
            display: flex;
            align-items: center;
            gap: 14px;
            transition: all .3s ease;
            text-decoration: none;
        }

        .sub-nav-card:hover {
            border-color: rgba(0, 240, 181, 0.3);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
            transform: translateY(-2px);
        }

        .sub-nav-card i {
            font-size: 22px;
            color: var(--accent);
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 240, 181, 0.08);
            border-radius: 12px;
            flex-shrink: 0;
        }

        .sub-nav-card .sub-nav-info {
            flex: 1;
        }

        .sub-nav-card .sub-nav-info strong {
            display: block;
            font-size: 15px;
            color: var(--text-white);
            margin-bottom: 2px;
        }

        .sub-nav-card .sub-nav-info span {
            font-size: 13px;
            color: var(--text-mute);
        }

        .sub-nav-card .fa-arrow-right {
            font-size: 13px;
            color: var(--text-mute);
        }

        /* ===== 流程区 ===== */
        .process-section {
            padding: var(--section-gap) 0;
            background: rgba(16, 31, 60, 0.28);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .process-card {
            background: var(--bg-panel);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            position: relative;
            height: 100%;
            transition: all .3s ease;
        }

        .process-card:hover {
            border-color: rgba(0, 240, 181, 0.25);
            transform: translateY(-4px);
        }

        .process-card .step-num {
            font-family: var(--font-mono);
            font-size: 26px;
            font-weight: 700;
            color: rgba(0, 240, 181, 0.4);
            display: block;
            margin-bottom: 10px;
        }

        .process-card i {
            font-size: 24px;
            color: var(--accent);
            display: block;
            margin-bottom: 14px;
        }

        .process-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }

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

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

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

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

        .faq-item.open {
            border-color: rgba(0, 240, 181, 0.25);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            background: transparent;
            text-align: left;
        }

        .faq-question h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-white);
            line-height: 1.5;
        }

        .faq-question .plus {
            font-size: 18px;
            color: var(--accent);
            flex-shrink: 0;
            transition: transform .3s ease;
            line-height: 1;
        }

        .faq-item.open .plus {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }

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

        .faq-answer p {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-dim);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 0 0 var(--section-gap);
        }

        .cta-card {
            position: relative;
            background:
                linear-gradient(135deg, rgba(0, 240, 181, 0.06) 0%, rgba(16, 31, 60, 0.85) 45%, rgba(11, 19, 43, 0.9) 100%),
                url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            border: 1px solid rgba(0, 240, 181, 0.15);
            border-radius: 24px;
            padding: 60px 40px;
            text-align: center;
            overflow: hidden;
        }

        .cta-card h2 {
            font-size: clamp(26px, 3.6vw, 38px);
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 14px;
        }

        .cta-card p {
            font-size: 15px;
            color: var(--text-dim);
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            max-width: 480px;
            margin: 0 auto;
            flex-wrap: wrap;
        }

        .cta-form input {
            flex: 1;
            min-width: 220px;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 12px 16px;
            color: var(--text-white);
            font-size: 14px;
            transition: all .25s ease;
        }

        .cta-form input::placeholder {
            color: var(--text-mute);
        }

        .cta-form input:focus {
            border-color: rgba(0, 240, 181, 0.3);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #070C1A;
            border-top: 1px solid rgba(0, 240, 181, 0.08);
            padding: 56px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-logo .logo-icon {
            width: 32px;
            height: 32px;
            font-size: 15px;
        }

        .footer-logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-white);
        }

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

        .footer-brand p {
            font-size: 14px;
            color: var(--text-mute);
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dim);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

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

        .footer-col ul a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--text-dim);
            transition: all .25s ease;
        }

        .footer-col ul a i {
            font-size: 10px;
            color: var(--text-mute);
            transition: all .25s ease;
        }

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

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-mute);
        }

        .footer-bottom .footer-links a {
            font-size: 13px;
            color: var(--text-mute);
            transition: color .25s ease;
        }

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

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .main-nav {
                gap: 0;
            }

            .main-nav a {
                padding: 8px 12px;
                font-size: 13px;
            }

            .search-box {
                width: 150px;
            }

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

        @media (max-width: 820px) {
            .nav-actions .search-box,
            .nav-actions .icon-btn,
            .nav-actions .btn {
                display: none;
            }

            .main-nav {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .mobile-menu.open {
                display: block;
            }

            .page-hero {
                padding: var(--header-height) 0 48px;
            }

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

            .hero-visual {
                margin-top: 32px;
                min-height: 260px;
            }

            .hero-visual .visual-main img {
                height: 220px;
            }

            .section {
                padding: var(--section-gap-mobile) 0;
            }

            .features-wrap {
                gap: 40px;
            }

            .feature-image img {
                height: 220px;
            }

            .cta-card {
                padding: 40px 24px;
            }
        }

        @media (max-width: 640px) {
            :root {
                --section-gap: 48px;
                --header-height: 60px;
            }

            body {
                font-size: 15px;
            }

            .brand-logo .logo-text {
                font-size: 16px;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }

            .page-hero h1 {
                font-size: 32px;
            }

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

            .stat-item strong {
                font-size: 24px;
            }

            .feature-image img {
                height: 180px;
            }

            .topic-card {
                padding: 18px;
            }

            .topic-card .topic-img img {
                height: 140px;
            }

            .cta-form {
                flex-direction: column;
            }

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

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .faq-question {
                padding: 16px 18px;
            }

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

        @media (max-width: 480px) {
            .hero-visual .visual-card {
                min-width: 130px;
                padding: 10px 14px;
            }

            .hero-visual .visual-card i {
                font-size: 16px;
            }

            .hero-visual .visual-card strong {
                font-size: 12px;
            }

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

            .sub-nav-block {
                grid-template-columns: 1fr;
            }
        }