/* roulang page: index */
:root {
  --bg-primary: #0B1020;
  --bg-dark: #0F172A;
  --bg-card: rgba(255,255,255,0.03);
  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(255,255,255,0.16);
  --accent-1: #38BDF8;
  --accent-2: #22D3EE;
  --accent-grad: linear-gradient(135deg, #38BDF8 0%, #22D3EE 100%);
  --text-primary: rgba(226,232,240,0.95);
  --text-secondary: rgba(148,163,184,0.85);
  --text-muted: rgba(148,163,184,0.55);
  --success: #34D399;
  --danger: #F87171;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --radius-pill: 999px;
  --shadow: 0 8px 32px rgba(0,0,0,0.35);
  --shadow-hover: 0 12px 40px rgba(0,0,0,0.45);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Consolas, monospace;
  --container: 1180px;
  --header-h: 72px;
}
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
}
body {
  background: var(--bg-primary);
  font-family: var(--font);
  color: var(--text-primary);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease;
}
img {
  max-width: 100%;
  display: block;
  border-radius: 12px;
}
button {
  font-family: var(--font);
  cursor: pointer;
  border: none;
  background: none;
}
input, textarea {
  font-family: var(--font);
  font-size: 15px;
  color: var(--text-primary);
}
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
}
:focus-visible {
  outline: 2px solid var(--accent-1);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(56,189,248,0.25);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  transition: all 0.3s ease;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.btn-primary {
  background: var(--accent-grad);
  color: #0B1020;
  box-shadow: 0 0 24px rgba(56,189,248,0.35);
}
.btn-primary:hover {
  box-shadow: 0 0 36px rgba(56,189,248,0.55);
  transform: translateY(-2px);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 0 16px rgba(56,189,248,0.3);
}
.btn-outline {
  background: transparent;
  color: var(--accent-1);
  border: 1px solid var(--accent-1);
  box-shadow: 0 0 14px rgba(56,189,248,0.12);
}
.btn-outline:hover {
  color: var(--accent-2);
  border-color: var(--accent-2);
  box-shadow: 0 0 28px rgba(56,189,248,0.35);
  transform: translateY(-2px);
}
.btn-outline:active {
  transform: translateY(0);
}
.btn-sm {
  padding: 9px 20px;
  font-size: 14px;
  border-radius: var(--radius-sm);
}
.btn-full {
  width: 100%;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  z-index: 200;
  background: rgba(11,16,32,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text-primary);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.logo::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 28px;
  height: 3px;
  border-radius: 4px;
  background: var(--accent-grad);
}
.logo-icon {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: var(--accent-grad);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: #0B1020;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 0;
  position: relative;
  transition: color 0.25s ease;
}
.nav-link:hover {
  color: var(--accent-1);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--accent-grad);
  transition: width 0.3s ease;
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}
.nav-link.active {
  color: var(--text-primary);
}
.nav-cta {
  margin-left: 16px;
}
@media (max-width: 1023px) {
  .main-nav .nav-link,
  .main-nav .nav-cta {
    display: none;
  }
  .header-inner {
    justify-content: center;
  }
}

/* Hero */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 48px) 0 80px;
  min-height: 680px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.3;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 30%, rgba(56,189,248,0.12), transparent 60%),
              radial-gradient(ellipse at 20% 80%, rgba(52,211,153,0.08), transparent 50%),
              linear-gradient(180deg, rgba(11,16,32,0.6) 0%, var(--bg-primary) 100%);
}
.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='40' height='40' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M40 0H0v40' fill='none' stroke='rgba(255,255,255,0.04)' stroke-width='1'/%3E%3C/svg%3E");
  background-size: 40px 40px;
  opacity: 0.6;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.hero-content {
  max-width: 560px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: rgba(56,189,248,0.1);
  border: 1px solid rgba(56,189,248,0.25);
  font-size: 13px;
  font-weight: 500;
  color: #7DD3FC;
  margin-bottom: 24px;
}
.hero-badge i {
  font-size: 12px;
}
.hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0.5px;
  color: var(--text-primary);
  margin-bottom: 24px;
}
.hero-sub {
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 480px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-visual {
  position: relative;
}
.hero-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px) saturate(120%);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
  padding: 36px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  min-height: 380px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.hero-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, rgba(255,255,255,0.12), transparent);
  border-radius: 0 0 100px 0;
  pointer-events: none;
}
.hero-card-tags {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}
.hero-card-tags span {
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 500;
  background: rgba(11,16,32,0.7);
  border: 1px solid rgba(255,255,255,0.12);
  color: rgba(226,232,240,0.9);
  backdrop-filter: blur(8px);
}
.hero-card-text {
  position: relative;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}
@media (max-width: 1023px) {
  .hero {
    padding: 110px 0 56px;
    min-height: auto;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-content {
    max-width: 100%;
    text-align: center;
  }
  .hero-sub {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-card {
    min-height: 300px;
  }
}

/* Trust Bar */
.trust-bar {
  background: rgba(255,255,255,0.02);
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  padding: 28px 0;
}
.trust-item {
  text-align: center;
  padding: 8px 16px;
}
.trust-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--success);
  line-height: 1.3;
}
.trust-label {
  display: block;
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 4px;
}
@media (max-width: 640px) {
  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .trust-num {
    font-size: 22px;
  }
}

/* Section Head */
.section-head {
  text-align: center;
  margin-bottom: 48px;
}
.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}
.section-head p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto;
}
@media (max-width: 640px) {
  .section-head h2 {
    font-size: 26px;
  }
}

/* Solutions */
.solutions {
  padding: 96px 0;
}
.solution-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.solution-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px) saturate(120%);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}
.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 90px;
  height: 90px;
  background: linear-gradient(135deg, rgba(255,255,255,0.08), transparent);
  border-radius: 0 0 90px 0;
  pointer-events: none;
}
.solution-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255,255,255,0.16);
  box-shadow: var(--shadow-hover);
}
.solution-card.card-wide {
  grid-column: 1 / span 2;
  flex-direction: row;
  align-items: center;
  gap: 32px;
  padding: 32px;
}
.solution-card.card-wide .card-body {
  flex: 1;
}
.solution-card.card-wide .solution-media {
  flex: 1;
  border-radius: 12px;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(56,189,248,0.12), rgba(52,211,153,0.08));
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.solution-card.card-wide .solution-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 12px;
  min-height: 200px;
}
.solution-card.card-span {
  grid-column: 1 / -1;
  flex-direction: row;
  align-items: center;
  gap: 32px;
  padding: 32px 40px;
}
.solution-card.card-span .card-body {
  flex: 1;
}
.solution-card.card-span .solution-media {
  width: 260px;
  height: 160px;
  overflow: hidden;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(56,189,248,0.12), rgba(148,163,184,0.08));
  display: flex;
  align-items: center;
  justify-content: center;
}
.solution-card.card-span .solution-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 12px;
}
.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(56,189,248,0.18), rgba(34,211,238,0.12));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--accent-1);
  margin-bottom: 20px;
  font-weight: 700;
  font-family: var(--font-mono);
}
.solution-card.card-wide .card-icon,
.solution-card.card-span .card-icon {
  margin-bottom: 0;
  flex-shrink: 0;
}
.solution-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}
.solution-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}
.card-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--accent-1);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: auto;
  transition: gap 0.25s ease, color 0.25s ease;
}
.card-link:hover {
  color: var(--accent-2);
  gap: 10px;
}
@media (max-width: 1023px) {
  .solutions {
    padding: 64px 0;
  }
  .solution-grid {
    grid-template-columns: 1fr;
  }
  .solution-card.card-wide,
  .solution-card.card-span {
    grid-column: 1;
    flex-direction: column;
    gap: 16px;
  }
  .solution-card.card-wide .solution-media,
  .solution-card.card-span .solution-media {
    width: 100%;
    min-height: 160px;
  }
  .solution-card.card-span .solution-media {
    width: 100%;
  }
}

/* Stats Band */
.stats-band {
  background: linear-gradient(135deg, #0F172A 0%, #0B1020 100%);
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}
.stats-band::before,
.stats-band::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.04);
  pointer-events: none;
}
.stats-band::before {
  width: 300px;
  height: 300px;
  top: -120px;
  right: 10%;
}
.stats-band::after {
  width: 200px;
  height: 200px;
  bottom: -80px;
  left: 15%;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.stat-item {
  text-align: center;
  padding: 24px 16px;
  position: relative;
}
.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 56px;
  background: rgba(255,255,255,0.06);
}
.stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 700;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}
.stat-label {
  display: block;
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 8px;
}
@media (max-width: 640px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-item:nth-child(2)::after {
    display: none;
  }
  .stat-item:nth-child(1)::after,
  .stat-item:nth-child(3)::after {
    display: none;
  }
  .stat-item {
    padding: 16px 8px;
  }
}

/* News */
.news-section {
  padding: 96px 0;
}
.news-section .section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  margin-bottom: 40px;
}
.news-section .section-head h2 {
  margin-bottom: 0;
}
.news-section .section-head p {
  margin: 0;
}
.view-all {
  font-size: 14px;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.25s ease;
}
.view-all:hover {
  color: var(--accent-1);
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.news-card {
  display: flex;
  gap: 20px;
  padding: 20px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
  position: relative;
}
.news-card:hover {
  border-color: rgba(255,255,255,0.16);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.news-thumb {
  width: 140px;
  height: 100px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
  background: rgba(56,189,248,0.06);
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 12px;
}
.news-info {
  flex: 1;
  display: flex;
  flex-direction: column;
}
.news-tag {
  display: inline-flex;
  align-self: flex-start;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: rgba(56,189,248,0.15);
  border: 1px solid rgba(56,189,248,0.2);
  color: #7DD3FC;
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 8px;
}
.news-info h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-info p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}
.news-time {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-muted);
  margin-top: auto;
}
.empty-state {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 64px 24px;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
}
.empty-state .empty-icon {
  font-size: 36px;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.empty-state p {
  font-size: 15px;
  color: var(--text-muted);
}
@media (max-width: 1023px) {
  .news-section {
    padding: 64px 0;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .news-card {
    flex-direction: column;
  }
  .news-thumb {
    width: 100%;
    height: 160px;
  }
}

/* FAQ */
.faq-section {
  padding: 96px 0;
  background: rgba(255,255,255,0.02);
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.faq-grid {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  transition: border-color 0.3s ease;
}
.faq-item:hover {
  border-color: rgba(255,255,255,0.14);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  padding: 0;
  background: none;
  text-align: left;
  line-height: 1.5;
  position: relative;
}
.faq-question::before {
  content: '';
  width: 3px;
  height: 18px;
  border-radius: 3px;
  background: var(--accent-grad);
  margin-right: 4px;
  flex-shrink: 0;
}
.faq-arrow {
  font-size: 14px;
  color: var(--text-muted);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: auto;
}
.faq-item.open .faq-arrow {
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-answer-inner {
  padding-top: 12px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  border-top: 1px solid rgba(255,255,255,0.06);
}
@media (max-width: 640px) {
  .faq-section {
    padding: 64px 0;
  }
  .faq-item {
    padding: 18px 20px;
  }
}

/* CTA */
.cta-section {
  padding: 96px 0 72px;
}
.cta-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px) saturate(120%);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
  max-width: 760px;
  margin: 0 auto;
}
.cta-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 120px;
  height: 120px;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  border-radius: 0 0 120px 0;
  pointer-events: none;
}
.cta-card h2 {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.3;
}
.cta-card p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto 32px;
  line-height: 1.7;
}
.cta-card .btn-primary {
  font-size: 16px;
  padding: 16px 40px;
}
.privacy-note {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 16px;
  text-align: center;
}
@media (max-width: 640px) {
  .cta-section {
    padding: 64px 0 48px;
  }
  .cta-card {
    padding: 36px 24px;
  }
}

/* Footer */
.site-footer {
  background: var(--bg-dark);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 72px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .logo {
  margin-bottom: 16px;
  font-size: 22px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-top: 12px;
}
.footer-nav h4,
.footer-contact h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.footer-nav a {
  display: block;
  font-size: 14px;
  color: var(--text-muted);
  padding: 6px 0;
  transition: color 0.25s ease;
}
.footer-nav a:hover {
  color: var(--accent-1);
}
.footer-contact p {
  font-size: 14px;
  color: var(--text-muted);
  padding: 4px 0;
  line-height: 1.7;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 24px;
  text-align: center;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}
@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* Bottom Tabs */
.bottom-tabs {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 300;
  height: 60px;
  background: rgba(11,16,32,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid rgba(255,255,255,0.06);
  display: none;
  align-items: center;
  justify-content: space-around;
  padding-bottom: env(safe-area-inset-bottom);
}
.tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 25%;
  height: 100%;
  color: var(--text-muted);
  font-size: 11px;
  transition: color 0.25s ease;
}
.tab-item i {
  font-size: 18px;
  transition: transform 0.25s ease;
}
.tab-item:hover {
  color: var(--accent-1);
}
.tab-item:active i {
  transform: scale(0.9);
}
.tab-item.active {
  color: var(--accent-1);
}
.tab-item.active i {
  text-shadow: 0 0 12px rgba(56,189,248,0.5);
}
@media (max-width: 1023px) {
  .bottom-tabs {
    display: flex;
  }
  body {
    padding-bottom: 60px;
  }
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}
.modal-box {
  width: 100%;
  max-width: 440px;
  background: rgba(21,26,42,0.92);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  box-shadow: var(--shadow-hover);
  transform: translateY(20px);
  transition: transform 0.35s ease;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-overlay.open .modal-box {
  transform: translateY(0);
}
.modal-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  border-radius: 0 0 80px 0;
  pointer-events: none;
}
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  color: var(--text-muted);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
  z-index: 10;
}
.modal-close:hover {
  color: var(--text-primary);
  border-color: rgba(255,255,255,0.3);
  transform: rotate(90deg);
}
.modal-box h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}
.modal-box .modal-desc {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-weight: 500;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: calc(var(--radius-sm) - 2px);
  font-size: 15px;
  color: var(--text-primary);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
  resize: vertical;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(148,163,184,0.4);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-1);
  box-shadow: 0 0 12px rgba(56,189,248,0.25);
}
.form-group.has-error input,
.form-group.has-error textarea {
  border-color: var(--danger);
}
.form-error {
  display: none;
  font-size: 12px;
  color: var(--danger);
  margin-top: 4px;
}
.form-group.has-error .form-error {
  display: block;
}
.modal-box form .btn {
  margin-top: 8px;
}
.modal-box .privacy-note {
  margin-top: 16px;
}
.form-success {
  text-align: center;
  padding: 40px 0;
}
.success-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(52,211,153,0.15);
  border: 1px solid rgba(52,211,153,0.3);
  color: var(--success);
  font-size: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.form-success p {
  font-size: 16px;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.form-success span {
  font-size: 14px;
  color: var(--text-muted);
}

/* roulang page: category1 */
:root {
            --bg-primary: #0B1020;
            --bg-secondary: #0F172A;
            --bg-elevated: rgba(255, 255, 255, 0.03);
            --border-standard: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(255, 255, 255, 0.16);
            --accent-1: #38BDF8;
            --accent-2: #22D3EE;
            --text-primary: rgba(226, 232, 240, 0.95);
            --text-secondary: rgba(148, 163, 184, 0.85);
            --text-weak: rgba(148, 163, 184, 0.55);
            --success: #34D399;
            --danger: #F87171;
            --radius-lg: 20px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow-default: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.45);
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
            --font-mono: "JetBrains Mono", "SF Mono", Consolas, monospace;
            --gradient-accent: linear-gradient(135deg, #38BDF8, #22D3EE);
            --gradient-success: linear-gradient(135deg, #34D399, #6EE7B7);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        button {
            font-family: inherit;
            border: none;
            cursor: pointer;
            background: none;
            color: inherit;
            transition: all 0.2s ease;
        }

        input,
        textarea {
            font-family: inherit;
            font-size: 15px;
            color: var(--text-primary);
        }

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1180px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 96px 0;
        }

        .section-alt {
            background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            line-height: 1.4;
            cursor: pointer;
            transition: all 0.25s ease;
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .btn:focus-visible,
        .nav-link:focus-visible,
        .glass-card a:focus-visible,
        .faq-question:focus-visible,
        .footer-grid a:focus-visible {
            outline: 2px solid var(--accent-1);
            outline-offset: 2px;
            box-shadow: 0 0 12px rgba(56, 189, 248, 0.4);
        }

        .btn-primary {
            background: var(--gradient-accent);
            color: #0B1020;
            font-weight: 700;
            box-shadow: 0 0 24px rgba(56, 189, 248, 0.35);
            border-color: transparent;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 32px rgba(56, 189, 248, 0.55);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.4);
        }

        .btn-outline {
            background: transparent;
            border-color: var(--border-hover);
            color: var(--text-primary);
        }

        .btn-outline:hover {
            border-color: var(--accent-1);
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.15);
            color: var(--accent-1);
        }

        .btn-outline:active {
            transform: scale(0.98);
            border-color: var(--accent-2);
            box-shadow: 0 0 12px rgba(56, 189, 248, 0.2);
        }

        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
        }

        .nav-cta {
            margin-left: 16px;
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 72px;
            z-index: 1000;
            background: rgba(11, 16, 32, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-standard);
        }

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

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 0.5px;
            color: var(--text-primary);
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--gradient-accent);
            border-radius: 10px;
            color: #0B1020;
            font-size: 16px;
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.4);
        }

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

        .nav-link {
            font-size: 15px;
            color: var(--text-secondary);
            position: relative;
            padding: 4px 2px;
        }

        .nav-link:hover {
            color: var(--accent-1);
        }

        .nav-link.active {
            color: var(--text-primary);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--gradient-accent);
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(56, 189, 248, 0.5);
        }

        /* Bottom Tab Bar (mobile) */
        .bottom-tabbar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            height: calc(60px + env(safe-area-inset-bottom));
            padding-bottom: env(safe-area-inset-bottom);
            background: rgba(11, 16, 32, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 999;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .bottom-tabbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-around;
            height: 60px;
        }

        .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            font-size: 11px;
            color: var(--text-weak);
            min-width: 60px;
        }

        .tab-item i {
            font-size: 20px;
        }

        .tab-item.active {
            color: var(--accent-1);
            text-shadow: 0 0 10px rgba(56, 189, 248, 0.5);
        }

        .tab-item.active i {
            background: var(--gradient-accent);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        /* Hero */
        .hero-section {
            position: relative;
            padding: 160px 0 80px;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center top;
            opacity: 0.35;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: radial-gradient(ellipse at 20% 30%, rgba(56, 189, 248, 0.15) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 70%, rgba(52, 211, 153, 0.08) 0%, transparent 50%),
                linear-gradient(180deg, rgba(11, 16, 32, 0.7) 0%, var(--bg-primary) 100%);
        }

        .hero-grid-lines {
            position: absolute;
            inset: 0;
            z-index: 0;
            background-image: linear-gradient(rgba(56, 189, 248, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(56, 189, 248, 0.05) 1px, transparent 1px);
            background-size: 64px 64px;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 64px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: clamp(32px, 5vw, 52px);
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: 0.5px;
            margin-bottom: 24px;
        }

        .hero-content .highlight {
            background: var(--gradient-accent);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            font-size: 18px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 36px;
            max-width: 520px;
        }

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

        .hero-visual {
            position: relative;
        }

        .hero-card {
            background: rgba(15, 23, 42, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 32px;
            backdrop-filter: blur(16px) saturate(120%);
            -webkit-backdrop-filter: blur(16px) saturate(120%);
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-default);
        }

        .hero-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0%, transparent 40%);
            pointer-events: none;
            border-radius: var(--radius-lg);
        }

        .hero-card-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border-standard);
        }

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

        .hero-card-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--gradient-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0B1020;
            font-size: 16px;
            flex-shrink: 0;
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.3);
        }

        .hero-card-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .hero-card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* Trust Bar */
        .trust-bar {
            position: relative;
            z-index: 3;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 40px 0 0;
            margin-top: 64px;
        }

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

        .trust-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-standard);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            text-align: center;
            transition: border-color 0.2s ease, transform 0.2s ease;
        }

        .trust-item:hover {
            border-color: var(--border-hover);
        }

        .trust-number {
            font-family: var(--font-mono);
            font-size: 32px;
            font-weight: 700;
            color: var(--success);
            line-height: 1.2;
        }

        .trust-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* Section Headers */
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 48px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: 0.5px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-top: 12px;
            max-width: 560px;
        }

        .section-link {
            font-size: 14px;
            color: var(--text-secondary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }

        .section-link:hover {
            color: var(--accent-1);
        }

        /* Card Grid */
        .guide-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .guide-card {
            background: rgba(15, 23, 42, 0.55);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 28px;
            backdrop-filter: blur(16px) saturate(120%);
            -webkit-backdrop-filter: blur(16px) saturate(120%);
            position: relative;
            overflow: hidden;
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .guide-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.06) 0%, transparent 40%);
            pointer-events: none;
        }

        .guide-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.16);
            box-shadow: var(--shadow-hover);
        }

        .guide-card-wide {
            grid-column: span 2;
        }

        .guide-card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--gradient-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0B1020;
            font-size: 18px;
            margin-bottom: 20px;
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.25);
        }

        .guide-card-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }

        .guide-card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .guide-card-link {
            font-size: 14px;
            color: var(--accent-1);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
        }

        .guide-card-link:hover {
            text-shadow: 0 0 12px rgba(56, 189, 248, 0.5);
        }

        /* Cover Card */
        .cover-card-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .cover-card {
            background: rgba(15, 23, 42, 0.55);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
            backdrop-filter: blur(16px) saturate(120%);
            -webkit-backdrop-filter: blur(16px) saturate(120%);
        }

        .cover-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.16);
            box-shadow: var(--shadow-hover);
        }

        .cover-image {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
        }

        .cover-card-body {
            padding: 24px;
        }

        .cover-card-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--accent-1);
            background: rgba(56, 189, 248, 0.15);
            padding: 3px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        .cover-card-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }

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

        /* Step Section */
        .step-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 48px;
        }

        .step-item {
            position: relative;
            padding: 28px 24px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-standard);
            border-radius: var(--radius-md);
            transition: border-color 0.25s ease, transform 0.25s ease;
        }

        .step-item:hover {
            border-color: var(--border-hover);
            transform: translateY(-2px);
        }

        .step-number {
            font-family: var(--font-mono);
            font-size: 14px;
            color: var(--accent-1);
            font-weight: 700;
            margin-bottom: 12px;
            display: block;
        }

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

        .step-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* FAQ */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-group {
            background: rgba(15, 23, 42, 0.55);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            backdrop-filter: blur(16px) saturate(120%);
            -webkit-backdrop-filter: blur(16px) saturate(120%);
            margin-bottom: 16px;
            overflow: hidden;
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 16px;
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            position: relative;
            cursor: pointer;
            transition: color 0.2s ease;
        }

        .faq-question::before {
            content: '';
            width: 3px;
            height: 20px;
            background: var(--gradient-accent);
            border-radius: 3px;
            flex-shrink: 0;
        }

        .faq-question:hover {
            color: var(--accent-1);
        }

        .faq-question .fa-chevron-down {
            margin-left: auto;
            transition: transform 0.3s ease;
            color: var(--text-weak);
        }

        .faq-group.open .faq-question .fa-chevron-down {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, opacity 0.3s ease;
            opacity: 0;
        }

        .faq-group.open .faq-answer {
            max-height: 400px;
            opacity: 1;
        }

        .faq-answer-inner {
            padding: 0 24px 24px 43px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* CTA */
        .cta-section {
            padding: 48px 0 32px;
        }

        .cta-card {
            background: rgba(15, 23, 42, 0.55);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            backdrop-filter: blur(16px) saturate(120%);
            -webkit-backdrop-filter: blur(16px) saturate(120%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 120px;
            background: radial-gradient(ellipse at 30% 0%, rgba(56, 189, 248, 0.2) 0%, transparent 70%),
                radial-gradient(ellipse at 70% 0%, rgba(34, 211, 238, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-title {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .cta-desc {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .privacy-note {
            font-size: 12px;
            color: var(--text-weak);
            margin-top: 16px;
        }

        /* Modal */
        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.65);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            z-index: 2000;
            display: none;
            align-items: center;
            justify-content: center;
            padding: 24px;
        }

        .modal-overlay.active {
            display: flex;
        }

        .modal-box {
            background: rgba(15, 23, 42, 0.92);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 32px;
            max-width: 440px;
            width: 100%;
            backdrop-filter: blur(16px) saturate(120%);
            -webkit-backdrop-filter: blur(16px) saturate(120%);
            position: relative;
            box-shadow: var(--shadow-hover);
        }

        .modal-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.06);
            transition: all 0.2s ease;
        }

        .modal-close:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.12);
        }

        .modal-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .modal-desc {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px 14px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--accent-1);
            box-shadow: 0 0 12px rgba(56, 189, 248, 0.25);
        }

        .form-group textarea {
            min-height: 80px;
            resize: vertical;
        }

        .form-group .error-msg {
            font-size: 12px;
            color: var(--danger);
            margin-top: 4px;
            display: none;
        }

        .form-group.error input,
        .form-group.error textarea {
            border-color: var(--danger);
        }

        .form-group.error .error-msg {
            display: block;
        }

        .form-privacy {
            font-size: 12px;
            color: var(--text-weak);
            text-align: center;
            margin-top: 12px;
        }

        .modal-success {
            text-align: center;
            padding: 40px 16px;
            display: none;
        }

        .modal-success .success-icon {
            font-size: 48px;
            color: var(--success);
            margin-bottom: 16px;
        }

        .modal-success h3 {
            font-size: 20px;
            margin-bottom: 8px;
        }

        .modal-success p {
            font-size: 14px;
            color: var(--text-secondary);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-standard);
            padding: 64px 0 96px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 12px;
            max-width: 320px;
            line-height: 1.6;
        }

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

        .footer-nav a {
            display: block;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 4px 0;
        }

        .footer-nav a:hover {
            color: var(--accent-1);
        }

        .footer-contact p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 8px;
            line-height: 1.6;
        }

        .footer-contact i {
            margin-right: 8px;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 32px;
            border-top: 1px solid var(--border-standard);
        }

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

        /* Page-specific */
        .category-page .hero-section {
            padding-top: 160px;
            padding-bottom: 64px;
        }

        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--accent-1);
            background: rgba(56, 189, 248, 0.12);
            border: 1px solid rgba(56, 189, 248, 0.2);
            padding: 6px 18px;
            border-radius: 999px;
            margin-bottom: 20px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 48px;
            }

            .hero-visual {
                display: none;
            }

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

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

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

            .footer-brand {
                grid-column: span 2;
            }
        }

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

            .site-header {
                height: 64px;
            }

            .header-inner {
                height: 64px;
            }

            .main-nav {
                display: none;
            }

            .bottom-tabbar {
                display: block;
            }

            .site-footer {
                padding-bottom: calc(80px + env(safe-area-inset-bottom));
            }

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

            .guide-card-wide {
                grid-column: span 1;
            }

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

            .section-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                margin-bottom: 32px;
            }

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

            .hero-section {
                padding: 120px 0 48px;
            }

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

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

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

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

            .footer-brand {
                grid-column: span 1;
            }

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

            .trust-item {
                text-align: left;
                display: flex;
                align-items: center;
                gap: 16px;
            }

            .trust-number {
                font-size: 24px;
            }

            .modal-box {
                padding: 24px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

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

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

            .section-title {
                font-size: 24px;
            }

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

            .step-item {
                padding: 20px;
            }
        }

/* roulang page: article */
:root{
  --bg-deep:#0B1020;
  --bg-dark:#0F172A;
  --accent-1:#38BDF8;
  --accent-2:#22D3EE;
  --success:#34D399;
  --error:#F87171;
  --text-main:rgba(226,232,240,0.95);
  --text-sub:rgba(148,163,184,0.85);
  --text-weak:rgba(148,163,184,0.55);
  --border:rgba(255,255,255,0.08);
  --border-hover:rgba(255,255,255,0.16);
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:10px;
  --shadow:0 8px 32px rgba(0,0,0,0.35);
  --shadow-lg:0 12px 40px rgba(0,0,0,0.45);
  --font-main:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-mono:"JetBrains Mono","SF Mono",Consolas,monospace;
  --container:1180px;
  --transition:all .28s cubic-bezier(.4,0,.2,1);
}
*,*::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(--bg-deep);color:var(--text-main);line-height:1.75;font-size:16px;min-height:100vh;-webkit-font-smoothing:antialiased;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{list-style-position:inside;}
button,input,textarea{font-family:inherit;font-size:inherit;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
::selection{background:rgba(56,189,248,.28);color:#fff;}

/* ===== Header / Nav ===== */
.site-header{position:fixed;top:0;left:0;right:0;height:72px;z-index:1000;background:rgba(11,16,32,.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);transition:var(--transition);}
.site-header.scrolled{border-bottom-color:rgba(56,189,248,.24);box-shadow:0 8px 32px rgba(0,0,0,.35);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:20px;font-weight:700;letter-spacing:.5px;color:var(--text-main);transition:var(--transition);}
.logo-icon{width:36px;height:36px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(135deg,rgba(56,189,248,.2),rgba(34,211,238,.15));color:var(--accent-1);font-size:17px;border:1px solid rgba(56,189,248,.25);}
.logo:hover .logo-icon{box-shadow:0 0 20px rgba(56,189,248,.35);}
.main-nav{display:flex;align-items:center;gap:28px;}
.nav-link{position:relative;font-size:15px;color:var(--text-sub);font-weight:500;padding:8px 2px;transition:var(--transition);}
.nav-link::after{content:"";position:absolute;left:0;bottom:-4px;width:0;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--accent-1),var(--accent-2));transition:var(--transition);}
.nav-link:hover{color:var(--accent-1);}
.nav-link.active{color:var(--text-main);}
.nav-link.active::after{width:100%;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;padding:12px 26px;cursor:pointer;transition:var(--transition);border:none;outline:none;color:var(--text-main);text-align:center;}
.btn-primary{background:linear-gradient(135deg,var(--accent-1),var(--accent-2));color:#0B1020;box-shadow:0 0 24px rgba(56,189,248,.35);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 32px rgba(56,189,248,.5);}
.btn-primary:active{transform:scale(.98);}
.btn-outline{background:rgba(56,189,248,.04);color:var(--accent-1);border:1px solid rgba(56,189,248,.45);}
.btn-outline:hover{background:rgba(56,189,248,.12);border-color:var(--accent-1);box-shadow:0 0 18px rgba(56,189,248,.25);}
.btn-outline:active{transform:scale(.98);}
.btn-sm{padding:8px 18px;font-size:14px;border-radius:var(--radius-sm);}
a:focus-visible,.btn:focus-visible,.nav-link:focus-visible{outline:2px solid var(--accent-1);outline-offset:2px;box-shadow:0 0 12px rgba(56,189,248,.4);}

/* ===== Page Hero ===== */
.page-hero{position:relative;padding:150px 0 72px;overflow:hidden;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(11,16,32,.94) 0%,rgba(11,16,32,.76) 45%,rgba(56,189,248,.12) 100%);}
.page-hero::after{content:"";position:absolute;width:440px;height:440px;right:-120px;top:-120px;background:radial-gradient(circle,rgba(56,189,248,.22),transparent 70%);filter:blur(30px);pointer-events:none;animation:glow-pulse 6s ease-in-out infinite;}
@keyframes glow-pulse{0%,100%{opacity:.6;}50%{opacity:1;}}
.page-hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.2fr .8fr;gap:64px;align-items:center;}
.page-hero-content{max-width:720px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-weak);margin-bottom:20px;}
.breadcrumb a{color:var(--text-weak);transition:var(--transition);}
.breadcrumb a:hover{color:var(--accent-1);}
.breadcrumb-split{color:rgba(148,163,184,.35);}
.breadcrumb-current{color:var(--text-sub);max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.category-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;background:rgba(56,189,248,.15);color:#7DD3FC;font-size:13px;font-weight:600;margin-bottom:18px;border:1px solid rgba(56,189,248,.25);}
.page-hero h1{font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1.35;letter-spacing:.5px;margin-bottom:24px;color:var(--text-main);}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;font-size:14px;color:var(--text-sub);font-family:var(--font-mono);}
.post-meta .meta-item{display:inline-flex;align-items:center;gap:7px;font-family:var(--font-main);}
.post-meta i{color:var(--accent-1);font-size:14px;width:16px;text-align:center;}
.page-hero-visual{position:relative;}
.page-hero-visual::before{content:"";position:absolute;inset:0;border-radius:24px;background:linear-gradient(135deg,rgba(56,189,248,.15),rgba(34,211,238,.05));filter:blur(10px);transform:rotate(6deg);}
.page-hero-visual img{position:relative;border-radius:var(--radius-lg);border:1px solid var(--border-hover);box-shadow:var(--shadow-lg);width:100%;height:280px;object-fit:cover;}

/* ===== Article Section ===== */
.article-section{padding:72px 0 96px;background:linear-gradient(180deg,var(--bg-deep) 0%,#0d1326 55%,var(--bg-deep) 100%);}
.article-body{max-width:720px;margin:0 auto;font-size:16px;line-height:1.85;color:var(--text-main);}
.article-body>*{max-width:100%;}
.article-body p{margin-bottom:24px;color:rgba(226,232,240,.88);font-size:16px;line-height:1.85;}
.article-body h2{font-size:24px;font-weight:700;margin:40px 0 18px;padding-left:14px;position:relative;line-height:1.4;letter-spacing:.5px;}
.article-body h2::before{content:"";position:absolute;left:0;top:4px;width:4px;height:calc(100% - 8px);border-radius:4px;background:linear-gradient(180deg,var(--accent-1),var(--accent-2));}
.article-body h3{font-size:20px;font-weight:700;margin:32px 0 14px;line-height:1.4;letter-spacing:.3px;}
.article-body h4{font-size:18px;font-weight:700;margin:28px 0 12px;}
.article-body a{color:var(--accent-1);border-bottom:1px solid rgba(56,189,248,.3);transition:var(--transition);}
.article-body a:hover{color:var(--accent-2);border-bottom-color:var(--accent-2);}
.article-body ul,.article-body ol{margin:0 0 24px;padding-left:24px;color:rgba(226,232,240,.88);}
.article-body li{margin-bottom:10px;line-height:1.7;}
.article-body li::marker{color:var(--accent-1);}
.article-body img{border-radius:12px;margin:18px 0 24px;border:1px solid var(--border);box-shadow:var(--shadow);}
.article-body figure{margin:18px 0 24px;}
.article-body figure img{margin:0;width:100%;}
.article-body figcaption{font-size:13px;color:var(--text-weak);text-align:center;margin-top:8px;}
.article-body blockquote{border-left:4px solid var(--accent-1);background:rgba(255,255,255,.04);padding:16px 24px;border-radius:0 12px 12px 0;margin:0 0 24px;color:var(--text-sub);font-size:15px;}
.article-body blockquote p{margin-bottom:8px;color:inherit;}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body pre{background:#0d1326;border:1px solid var(--border);border-radius:12px;padding:20px;overflow-x:auto;margin:0 0 24px;font-family:var(--font-mono);font-size:14px;line-height:1.7;}
.article-body code{font-family:var(--font-mono);font-size:.92em;background:rgba(56,189,248,.12);color:#7DD3FC;padding:2px 7px;border-radius:6px;}
.article-body pre code{background:transparent;color:rgba(226,232,240,.9);padding:0;}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 24px;border:1px solid var(--border);border-radius:12px;overflow:hidden;}
.article-body th,.article-body td{border:1px solid var(--border);padding:12px 16px;text-align:left;font-size:15px;}
.article-body th{background:rgba(255,255,255,.05);color:var(--text-main);font-weight:600;}
.article-body td{color:var(--text-sub);}
.article-body hr{border:none;height:1px;background:var(--border);margin:32px 0;}

/* ===== Empty State ===== */
.empty-state{max-width:720px;margin:0 auto;padding:80px 24px;text-align:center;background:rgba(255,255,255,.03);border:1px solid var(--border);border-radius:var(--radius-lg);}
.empty-state h3{font-size:22px;font-weight:700;margin-bottom:20px;color:var(--text-main);}
.empty-state a{display:inline-flex;}

/* ===== Related Section ===== */
.related-section{padding:0 0 96px;scroll-margin-top:80px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px;}
.section-head h2{font-size:28px;font-weight:700;letter-spacing:.5px;}
.section-head p{color:var(--text-sub);font-size:15px;margin-top:6px;}
.section-more{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--text-sub);transition:var(--transition);}
.section-more:hover{color:var(--accent-1);gap:12px;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.related-card{position:relative;background:rgba(255,255,255,.03);border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden;transition:var(--transition);display:flex;flex-direction:column;}
.related-card:hover{transform:translateY(-4px);border-color:var(--border-hover);box-shadow:var(--shadow-lg);}
.related-thumb-link{display:block;overflow:hidden;}
.related-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-dark);}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.related-card:hover .related-thumb img{transform:scale(1.05);}
.related-info{padding:22px 22px 24px;flex:1;display:flex;flex-direction:column;gap:10px;}
.badge{display:inline-flex;align-items:center;width:fit-content;padding:4px 12px;border-radius:999px;background:rgba(56,189,248,.15);color:#7DD3FC;font-size:12px;font-weight:500;}
.related-info h3{font-size:16px;font-weight:700;line-height:1.5;transition:var(--transition);}
.related-info h3 a:hover{color:var(--accent-1);}
.related-meta{font-size:13px;color:var(--text-weak);font-family:var(--font-mono);margin-top:auto;}

/* ===== Article CTA ===== */
.article-cta{padding:0 0 96px;scroll-margin-top:80px;}
.cta-card{position:relative;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-lg);padding:56px 48px;text-align:center;overflow:hidden;backdrop-filter:blur(16px) saturate(120%);-webkit-backdrop-filter:blur(16px) saturate(120%);box-shadow:var(--shadow);}
.cta-card::before{content:"";position:absolute;left:-60px;top:-60px;width:220px;height:220px;background:radial-gradient(circle,rgba(56,189,248,.18),transparent 70%);filter:blur(40px);pointer-events:none;}
.cta-card::after{content:"";position:absolute;right:-40px;bottom:-40px;width:180px;height:180px;background:radial-gradient(circle,rgba(34,211,238,.12),transparent 70%);filter:blur(36px);pointer-events:none;}
.cta-card h2{position:relative;z-index:1;font-size:28px;font-weight:700;margin-bottom:16px;letter-spacing:.5px;}
.cta-card>p{position:relative;z-index:1;color:var(--text-sub);font-size:15px;margin-bottom:24px;}
.contact-line{position:relative;z-index:1;font-family:var(--font-mono);color:var(--accent-1)!important;display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;margin-bottom:28px!important;}
.contact-line i{color:var(--accent-1);}
.cta-actions{position:relative;z-index:1;display:flex;justify-content:center;gap:16px;flex-wrap:wrap;}

/* ===== Footer ===== */
.site-footer{border-top:1px solid var(--border);background:var(--bg-dark);padding:64px 0 100px;position:relative;}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr 1fr;gap:48px;margin-bottom:48px;}
.footer-brand p{color:var(--text-sub);font-size:14px;margin-top:16px;max-width:320px;line-height:1.7;}
.site-footer h4{font-size:15px;font-weight:600;color:var(--text-main);margin-bottom:18px;letter-spacing:.5px;}
.footer-nav{display:flex;flex-direction:column;gap:12px;}
.footer-nav a{color:var(--text-sub);font-size:14px;transition:var(--transition);width:fit-content;position:relative;}
.footer-nav a:hover{color:var(--accent-1);padding-left:4px;}
.footer-contact p{display:flex;align-items:center;gap:8px;color:var(--text-sub);font-size:14px;margin-bottom:12px;}
.footer-contact i{flex-shrink:0;}
.footer-bottom{border-top:1px solid var(--border);padding-top:24px;text-align:center;}
.footer-bottom p{color:var(--text-weak);font-size:13px;}

/* ===== Mobile Tab ===== */
.mobile-tab{display:none;position:fixed;bottom:0;left:0;right:0;z-index:1000;background:rgba(11,16,32,.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-top:1px solid rgba(255,255,255,.06);height:60px;padding-bottom:env(safe-area-inset-bottom);grid-template-columns:repeat(4,1fr);}
.mobile-tab-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:11px;color:var(--text-sub);transition:var(--transition);}
.mobile-tab-item i{font-size:20px;line-height:1;}
.mobile-tab-item span{line-height:1.2;}
.mobile-tab-item:hover{color:var(--accent-1);}
.mobile-tab-item.active{color:var(--accent-1);text-shadow:0 0 12px rgba(56,189,248,.5);}
.mobile-tab-item:focus-visible{outline:2px solid var(--accent-1);outline-offset:-6px;border-radius:12px;}

/* ===== System State Placeholders ===== */
.state-loading,.skeleton{position:relative;overflow:hidden;background:rgba(255,255,255,.04);border-radius:12px;}
.state-loading::after,.skeleton::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,transparent 30%,rgba(255,255,255,.06) 50%,transparent 70%);animation:shimmer 1.4s infinite;}
@keyframes shimmer{0%{transform:translateX(-100%);}100%{transform:translateX(100%);}}
.state-success{color:var(--success);}
.state-error{color:var(--error);}

/* ===== Responsive ===== */
@media (max-width:1024px){
  .page-hero-inner{grid-template-columns:1fr;gap:32px;}
  .page-hero-visual{max-width:520px;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .main-nav{gap:18px;}
  .nav-link{font-size:14px;}
  .page-hero{padding:120px 0 56px;}
  .page-hero h1{font-size:32px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px;}
  .cta-card{padding:40px 24px;}
}
@media (max-width:640px){
  .main-nav{display:none;}
  .site-header{height:64px;}
  .header-inner{height:64px;}
  .page-hero{padding:104px 0 48px;}
  .page-hero h1{font-size:28px;}
  .post-meta{flex-direction:column;align-items:flex-start;gap:8px;}
  .page-hero-visual img{height:210px;}
  .article-section{padding:56px 0 72px;}
  .related-grid{grid-template-columns:1fr;}
  .related-thumb{aspect-ratio:16/9;}
  .cta-card{padding:36px 22px;}
  .cta-card h2{font-size:23px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .article-cta{padding-bottom:72px;}
  .footer-grid{grid-template-columns:1fr;gap:36px;margin-bottom:32px;}
  .site-footer{padding:48px 0 96px;}
  .mobile-tab{display:grid;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .breadcrumb-current{max-width:180px;}
  .post-meta{font-size:13px;}
  .related-info{padding:18px;}
  .section-head h2{font-size:24px;}
  .contact-line{flex-direction:column;gap:6px;}
}