/* roulang page: index */
:root {
  --base: #0C0E11;
  --alt: #14171C;
  --deep: #101318;
  --gold: #C9A66B;
  --gold-hover: #DFBE86;
  --gold-disabled: rgba(201, 166, 107, 0.4);
  --accent: #38D6B6;
  --text-1: #EDEBE6;
  --text-2: #A5A19A;
  --text-3: #6B675F;
  --line: rgba(237, 235, 230, 0.08);
  --card-line: rgba(237, 235, 230, 0.06);
  --card-hover-line: rgba(201, 166, 107, 0.45);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --curve: cubic-bezier(0.2, 0.6, 0.3, 1);
  --font-cn: 'Noto Sans SC', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-num: 'Space Grotesk', 'Noto Sans SC', monospace;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-cn);
  background: var(--base);
  color: var(--text-1);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; }
ul, ol { list-style: none; }
::selection { background: rgba(201, 166, 107, 0.3); color: #fff; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Topbar */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 38px;
  background: rgba(12, 14, 17, 0.92);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  z-index: 1001;
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.topbar-domain {
  font-family: var(--font-num);
  font-size: 13px;
  color: var(--text-2);
  letter-spacing: 0.04em;
}
.topbar-right {
  display: flex;
  align-items: center;
  gap: 14px;
}
.topbar-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-2);
}
.topbar-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(56, 214, 182, 0.6);
}
.topbar-link {
  font-size: 13px;
  font-weight: 500;
  color: var(--gold);
  transition: color 0.3s;
}
.topbar-link:hover { color: var(--gold-hover); }

/* Nav */
.nav {
  position: fixed;
  top: 38px; left: 0; right: 0;
  height: 72px;
  z-index: 1000;
  background: rgba(12, 14, 17, 0.6);
  border-bottom: 1px solid transparent;
  transition: background 0.35s var(--curve), backdrop-filter 0.35s var(--curve), border-color 0.35s var(--curve);
}
.nav.scrolled {
  background: rgba(12, 14, 17, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--alt);
  border: 1px solid rgba(201, 166, 107, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-num);
  font-size: 20px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
}
.logo-text {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-1);
}
.nav-menu {
  display: flex;
  gap: 30px;
  align-items: center;
}
.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  padding: 8px 2px;
  position: relative;
  transition: color 0.3s var(--curve);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.35s var(--curve);
}
.nav-link:hover { color: var(--gold); }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--gold); }
.nav-link.active::after { width: 100%; background: var(--gold); }
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  background: var(--gold);
  color: #0C0E11;
  font-size: 14px;
  font-weight: 700;
  border: none;
  transition: background 0.3s var(--curve), transform 0.3s var(--curve);
  white-space: nowrap;
}
.nav-cta:hover { background: var(--gold-hover); transform: translateY(-2px); }
.nav-cta:active { transform: scale(0.97); }
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: rgba(255, 255, 255, 0.04);
  transition: border-color 0.3s;
}
.nav-toggle:hover { border-color: var(--gold); }
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-1);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: #0C0E11;
  z-index: 990;
  padding: 120px 32px 40px;
  flex-direction: column;
  overflow-y: auto;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-1);
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  transition: color 0.3s;
}
.mobile-menu a:hover,
.mobile-menu a.active { color: var(--gold); }
.mobile-menu .btn-primary { margin-top: 36px; width: 100%; justify-content: center; }

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  background: var(--gold);
  color: #0C0E11;
  font-size: 15px;
  font-weight: 700;
  border: none;
  transition: background 0.3s var(--curve), transform 0.3s var(--curve), box-shadow 0.3s var(--curve);
  cursor: pointer;
}
.btn-primary:hover { background: var(--gold-hover); transform: translateY(-2px); }
.btn-primary:active { transform: scale(0.97); }
.btn-primary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-pill);
  background: transparent;
  border: 1px solid rgba(237, 235, 230, 0.3);
  color: var(--text-1);
  font-size: 15px;
  font-weight: 500;
  transition: border-color 0.3s var(--curve), color 0.3s var(--curve), transform 0.3s var(--curve);
  cursor: pointer;
}
.btn-secondary:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); }
.btn-secondary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--gold);
  font-size: 14px;
  font-weight: 500;
  transition: gap 0.3s var(--curve), color 0.3s var(--curve);
  cursor: pointer;
}
.text-link:hover { gap: 12px; color: var(--gold-hover); }

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 110px;
  padding-bottom: 80px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  z-index: 0;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12, 14, 17, 0.72) 0%, #0C0E11 96%);
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 820px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(201, 166, 107, 0.5);
  color: var(--gold);
  font-size: 13px;
  letter-spacing: 0.04em;
  margin-bottom: 28px;
  background: rgba(12, 14, 17, 0.4);
}
.hero-title {
  font-size: 64px;
  line-height: 1.15;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  color: var(--text-1);
}
.hero-title .gold { color: var(--gold); }
.hero-sub {
  font-size: 17px;
  color: rgba(237, 235, 230, 0.8);
  line-height: 1.75;
  max-width: 560px;
  margin-bottom: 36px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}
.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.4em;
  color: var(--text-3);
  z-index: 1;
}
.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-3), transparent);
}

/* About */
.about {
  padding: 112px 0;
  scroll-margin-top: 120px;
}
.about-grid {
  display: grid;
  grid-template-columns: 5fr 6fr;
  gap: 64px;
  align-items: center;
}
.about-tag {
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--gold);
  margin-bottom: 16px;
}
.about-title {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 28px;
  color: var(--text-1);
}
.about-text {
  color: var(--text-2);
  font-size: 16px;
  line-height: 1.9;
  margin-bottom: 20px;
  max-width: 92%;
}
.about-stat {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.about-stat-num {
  font-family: var(--font-num);
  font-size: 44px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
}
.about-stat-label {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.5;
}
.about-image {
  position: relative;
}
.about-image img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--card-line);
  position: relative;
  z-index: 1;
}
.about-image::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid rgba(201, 166, 107, 0.5);
  border-radius: var(--radius-lg);
  transform: translate(14px, 14px);
  z-index: 0;
}

/* Section shared */
.section { padding: 112px 0; }
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 48px;
  gap: 24px;
}
.section-eyebrow {
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--gold);
  margin-bottom: 10px;
}
.section-title {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-1);
}

/* Featured cards */
.featured-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
}
.featured-card {
  background: var(--alt);
  border-radius: var(--radius-lg);
  border: 1px solid var(--card-line);
  overflow: hidden;
  transition: transform 0.35s var(--curve), box-shadow 0.35s var(--curve), border-color 0.35s var(--curve);
  display: flex;
  flex-direction: column;
}
.featured-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
  border-color: var(--card-hover-line);
}
.featured-card-big { grid-column: span 2; }
.featured-card-img {
  overflow: hidden;
  position: relative;
}
.featured-card-img img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  filter: saturate(0.92);
  transition: transform 0.5s var(--curve), filter 0.5s var(--curve);
}
.featured-card:hover .featured-card-img img {
  transform: scale(1.03);
  filter: saturate(1.08);
}
.featured-card-content {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.featured-card-tag {
  align-self: flex-start;
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  background: rgba(201, 166, 107, 0.1);
  color: var(--gold);
  border: 1px solid rgba(201, 166, 107, 0.3);
  margin-bottom: 14px;
}
.featured-card-title {
  font-size: 22px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 10px;
  color: var(--text-1);
}
.featured-card-title.sm { font-size: 20px; }
.featured-card-excerpt {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 18px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.featured-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  margin-top: auto;
}
.featured-card-date {
  font-family: var(--font-num);
  color: var(--gold);
}

/* Trust */
.trust {
  background: var(--deep);
  padding: 96px 6.3%;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.trust-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.trust-title {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 14px;
  color: var(--text-1);
}
.trust-title .gold { color: var(--gold); }
.trust-sub {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.75;
  max-width: 440px;
}
.trust-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px 32px;
}
.trust-num {
  font-family: var(--font-num);
  font-size: 44px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1.1;
}
.trust-label {
  font-size: 14px;
  color: var(--text-2);
  margin-top: 6px;
}
.trust-points {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 28px;
}
.trust-point {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-1);
}
.trust-point::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* News */
.news-panel {
  background: var(--alt);
  border-radius: var(--radius-lg);
  border: 1px solid var(--card-line);
  padding: 0 24px;
}
.news-row {
  display: grid;
  grid-template-columns: 120px 120px 1fr 1.2fr 32px;
  align-items: center;
  gap: 24px;
  padding: 22px 12px;
  border-bottom: 1px solid var(--line);
  transition: background 0.3s var(--curve);
}
.news-row:last-child { border-bottom: none; }
.news-row:hover { background: rgba(255, 255, 255, 0.03); }
.news-date {
  font-family: var(--font-num);
  font-size: 14px;
  color: var(--text-3);
  white-space: nowrap;
}
.news-category {
  display: inline-block;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-2);
  border: 1px solid var(--line);
  white-space: nowrap;
  width: fit-content;
}
.news-title {
  font-size: 17px;
  font-weight: 500;
  color: var(--text-1);
  transition: color 0.3s var(--curve);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.news-row:hover .news-title { color: var(--gold); }
.news-excerpt {
  font-size: 13px;
  color: var(--text-2);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.news-arrow {
  color: var(--text-3);
  font-size: 18px;
  text-align: right;
  transition: transform 0.3s var(--curve), color 0.3s var(--curve);
}
.news-row:hover .news-arrow {
  transform: translateX(4px);
  color: var(--gold);
}
.news-empty {
  padding: 64px 20px;
  text-align: center;
  border: 1px dashed rgba(237, 235, 230, 0.2);
  border-radius: var(--radius-md);
  color: var(--text-3);
  font-size: 13px;
}
.news-empty-icon {
  font-size: 28px;
  margin-bottom: 12px;
}
.news-more {
  text-align: center;
  margin-top: 32px;
}

/* FAQ */
.faq-panel {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-item:first-child { border-top: 1px solid var(--line); }
.faq-q {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 0;
  font-size: 18px;
  font-weight: 500;
  cursor: pointer;
  color: var(--text-1);
  transition: color 0.3s var(--curve);
  width: 100%;
  text-align: left;
  background: none;
  border: none;
}
.faq-q::-webkit-details-marker { display: none; }
.faq-q:hover { color: var(--gold); }
.faq-icon {
  font-size: 24px;
  color: var(--gold);
  transition: transform 0.35s var(--curve);
  flex-shrink: 0;
  margin-left: 16px;
  font-weight: 300;
  line-height: 1;
}
.faq-item[open] .faq-icon { transform: rotate(45deg); }
.faq-a {
  padding-bottom: 24px;
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.8;
  max-width: 720px;
  padding-right: 32px;
}

/* CTA */
.cta {
  padding: 112px 0;
  text-align: center;
}
.cta-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-1);
}
.cta-desc {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 36px;
}
.cta-form-wrap {
  max-width: 540px;
  margin: 0 auto;
}
.cta-form {
  display: flex;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px;
  transition: border-color 0.3s var(--curve), box-shadow 0.3s var(--curve);
}
.cta-form:focus-within {
  border-color: var(--gold);
  box-shadow: 0 0 0 4px rgba(201, 166, 107, 0.12);
}
.cta-form input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: none;
  outline: none;
  padding: 0 20px;
  height: 46px;
  color: var(--text-1);
  font-size: 14px;
  border-radius: 999px;
}
.cta-form input::placeholder { color: var(--text-3); }
.cta-form button {
  height: 46px;
  padding: 0 30px;
  border-radius: 999px;
  background: var(--gold);
  color: #0C0E11;
  font-size: 14px;
  font-weight: 700;
  border: none;
  transition: background 0.3s var(--curve), transform 0.3s var(--curve);
  white-space: nowrap;
}
.cta-form button:hover { background: var(--gold-hover); transform: translateY(-2px); }
.cta-note {
  font-size: 13px;
  color: var(--text-3);
  margin-top: 18px;
}

/* Footer */
.footer {
  border-top: 1px solid var(--line);
  padding: 64px 0 32px;
  position: relative;
  overflow: hidden;
}
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse at center, rgba(201, 166, 107, 0.06), transparent 70%);
  pointer-events: none;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 48px;
  position: relative;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-desc {
  font-size: 14px;
  color: var(--text-2);
  max-width: 320px;
  line-height: 1.8;
}
.footer-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}
.footer-links li { margin-bottom: 12px; }
.footer-links a {
  font-size: 14px;
  color: var(--text-2);
  transition: color 0.3s var(--curve);
}
.footer-links a:hover { color: var(--gold); }
.footer-contact {
  font-size: 14px;
  color: var(--text-2);
  line-height: 2.2;
}
.footer-contact a { color: var(--gold); transition: color 0.3s; }
.footer-contact a:hover { color: var(--gold-hover); }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--text-3);
  font-family: var(--font-num);
  letter-spacing: 0.02em;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--curve), transform 0.6s var(--curve);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 1199px) {
  .container { width: 94%; }
  .hero-title { font-size: 56px; }
}
@media (max-width: 1023px) {
  .nav-menu { display: none; }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .section-title { font-size: 30px; }
  .trust-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .featured-grid { grid-template-columns: 1fr 1fr; }
  .featured-card-big { grid-column: span 2; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .news-row { grid-template-columns: 100px 100px 1fr 24px; }
  .news-excerpt { display: none; }
}
@media (max-width: 767px) {
  .hero { min-height: 90vh; }
  .hero-title { font-size: 46px; }
  .hero-sub { font-size: 16px; }
  .section { padding: 72px 0; }
  .about { padding: 72px 0; }
  .trust { padding: 72px 24px; }
  .cta { padding: 72px 0; }
  .section-title { font-size: 26px; }
  .about-text { max-width: 100%; }
  .featured-grid { grid-template-columns: 1fr; }
  .featured-card-big { grid-column: span 1; }
  .trust-metrics { grid-template-columns: 1fr 1fr; gap: 32px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .cta-form { flex-direction: column; border-radius: var(--radius-md); background: transparent; border: none; gap: 12px; padding: 0; }
  .cta-form input {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.04);
    height: 52px;
  }
  .cta-form button { width: 100%; border-radius: var(--radius-md); height: 52px; }
  .hero-actions { width: 100%; }
  .hero-actions .btn-primary,
  .hero-actions .btn-secondary { width: 100%; justify-content: center; }
  .news-row { grid-template-columns: 80px 1fr 20px; gap: 12px; padding: 18px 8px; }
  .news-category { display: none; }
  .news-panel { padding: 0 16px; }
  .topbar-status { display: none; }
  .topbar-domain { font-size: 12px; }
  .topbar-link { font-size: 13px; }
}
@media (max-width: 575px) {
  body { font-size: 15px; }
  .hero-title { font-size: 38px; }
  .hero-sub { font-size: 15px; }
  .trust-metrics { grid-template-columns: 1fr 1fr; }
  .trust-num { font-size: 34px; }
  .about-stat-num { font-size: 36px; }
  .btn-primary, .btn-secondary { padding: 13px 20px; font-size: 14px; }
  .faq-q { font-size: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* roulang page: category1 */
:root {
  --base: #0C0E11;
  --alt: #14171C;
  --deep: #101318;
  --gold: #C9A66B;
  --gold-hover: #DFBE86;
  --gold-disabled: rgba(201,166,107,0.4);
  --accent: #38D6B6;
  --text-1: #EDEBE6;
  --text-2: #A5A19A;
  --text-3: #6B675F;
  --line: rgba(237,235,230,0.08);
  --card-line: rgba(237,235,230,0.06);
  --card-line-hover: rgba(201,166,107,0.45);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --shadow-card-hover: 0 20px 50px rgba(0,0,0,0.45);
  --ease: cubic-bezier(0.2, 0.6, 0.3, 1);
  --font-sans: 'Noto Sans SC', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-num: 'Space Grotesk', 'Noto Sans SC', monospace;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--base);
  color: var(--text-1);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--gold); text-decoration: none; transition: color .35s var(--ease); }
a:hover { color: var(--gold-hover); }
button { font-family: inherit; border: none; background: none; cursor: pointer; color: inherit; }
ul { list-style: none; }
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
section { scroll-margin-top: 130px; }

/* ===== 顶部信息条 ===== */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1001;
  height: 38px;
  background: rgba(12,14,17,0.92);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.topbar-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.topbar-domain {
  font-family: var(--font-num);
  font-size: 13px;
  color: var(--text-2);
  letter-spacing: .02em;
}
.topbar-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-2);
}
.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(56,214,182,0.8);
}
.topbar-link {
  font-size: 13px;
  color: var(--gold);
  font-weight: 500;
}
.topbar-link:hover { color: var(--gold-hover); }

/* ===== 主导航 ===== */
.nav {
  position: fixed;
  top: 38px;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 72px;
  display: flex;
  align-items: center;
  background: transparent;
  transition: background .35s var(--ease), border-color .35s var(--ease), backdrop-filter .35s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(12,14,17,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--line);
}
.nav-inner {
  width: 100%;
  max-width: 1248px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--base);
  border: 1px solid rgba(201,166,107,0.5);
  color: var(--gold);
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-1);
  letter-spacing: 0.01em;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-left: auto;
}
.nav-link {
  position: relative;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  padding: 8px 0;
  transition: color .35s var(--ease);
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease);
}
.nav-link:hover { color: var(--gold); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active { color: var(--gold); }
.nav-link.active::after { transform: scaleX(1); }
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(201,166,107,0.5);
  color: var(--gold);
  font-size: 14px;
  font-weight: 700;
  transition: all .35s var(--ease);
  flex-shrink: 0;
}
.nav-cta:hover {
  background: var(--gold);
  color: var(--base);
  border-color: var(--gold);
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.04);
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-1);
  border-radius: 2px;
  transition: all .35s var(--ease);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 1023px) {
  .nav-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    justify-content: center;
    gap: 28px;
    background: rgba(12,14,17,0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity .35s var(--ease), visibility .35s var(--ease);
    margin: 0;
  }
  .nav-menu.open {
    opacity: 1;
    visibility: visible;
  }
  .nav-link { font-size: 24px; font-weight: 700; color: var(--text-1); }
  .nav-link.active { color: var(--gold); }
  .nav-cta {
    margin-left: auto;
    padding: 8px 16px;
    font-size: 13px;
  }
  .nav-toggle { display: flex; }
}
@media (max-width: 640px) {
  .nav-cta { display: none; }
}
body.no-scroll { overflow: hidden; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  transition: all .35s var(--ease);
  cursor: pointer;
}
.btn.primary {
  background: var(--gold);
  color: var(--base);
  border: 1px solid var(--gold);
}
.btn.primary:hover {
  background: var(--gold-hover);
  border-color: var(--gold-hover);
  color: var(--base);
  transform: translateY(-2px);
}
.btn.primary:active { transform: scale(0.97); }
.btn.secondary {
  background: transparent;
  color: var(--text-1);
  border: 1px solid rgba(237,235,230,0.3);
}
.btn.secondary:hover {
  color: var(--gold);
  border-color: var(--gold);
  transform: translateY(-2px);
}
.btn.secondary:active { transform: scale(0.97); }
.btn:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--gold);
  transition: gap .35s var(--ease);
}
.text-link:hover { gap: 10px; color: var(--gold-hover); }
.text-link .arrow { transition: transform .35s var(--ease); }
.text-link:hover .arrow { transform: translateX(2px); }

/* ===== 徽章 ===== */
.badge {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 500;
  line-height: 1;
}
.badge.gold {
  border: 1px solid rgba(201,166,107,0.5);
  color: var(--gold);
}
.badge.accent {
  background: rgba(56,214,182,0.1);
  color: var(--accent);
}
.badge.gray {
  background: rgba(255,255,255,0.06);
  color: var(--text-2);
}

/* ===== 分类页 Hero ===== */
.cat-hero {
  padding: 160px 0 72px;
  position: relative;
}
.cat-hero-inner {
  max-width: 820px;
}
.cat-hero .badge { margin-bottom: 20px; }
.cat-hero h1 {
  font-size: 48px;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
  color: var(--text-1);
}
.cat-hero-desc {
  font-size: 16px;
  color: var(--text-2);
  max-width: 720px;
  line-height: 1.8;
  border-left: 3px solid var(--gold);
  padding-left: 20px;
}

/* ===== 入口主卡片区 ===== */
.entrance-cards {
  padding: 40px 0 112px;
}
.entrance-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}
.spotlight-card {
  grid-column: span 8;
  background: var(--alt);
  border: 1px solid var(--card-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all .35s var(--ease);
}
.spotlight-card:hover {
  transform: translateY(-6px);
  border-color: var(--card-line-hover);
  box-shadow: var(--shadow-card-hover);
}
.spotlight-media {
  position: relative;
  height: 360px;
  overflow: hidden;
}
.spotlight-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.92);
  transition: filter .35s var(--ease), transform .35s var(--ease);
}
.spotlight-card:hover .spotlight-media img {
  filter: saturate(1.08);
  transform: scale(1.03);
}
.spotlight-body {
  padding: 28px;
}
.spotlight-body .badge { margin-bottom: 16px; }
.spotlight-body h3 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-1);
}
.spotlight-body p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 20px;
  max-width: 640px;
}
.mini-stack {
  grid-column: span 4;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.mini-card {
  flex: 1;
  background: var(--alt);
  border: 1px solid var(--card-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all .35s var(--ease);
}
.mini-card:hover {
  transform: translateY(-6px);
  border-color: var(--card-line-hover);
  box-shadow: var(--shadow-card-hover);
}
.mini-media {
  height: 170px;
  overflow: hidden;
}
.mini-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.92);
  transition: filter .35s var(--ease), transform .35s var(--ease);
}
.mini-card:hover .mini-media img {
  filter: saturate(1.08);
  transform: scale(1.03);
}
.mini-body {
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.mini-body .badge { margin-bottom: 12px; align-self: flex-start; }
.mini-body h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 8px;
}
.mini-body p {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.65;
  margin-bottom: 12px;
}

/* ===== 流程区 ===== */
.steps-section {
  padding: 112px 0;
  background: var(--deep);
}
.section-head {
  margin-bottom: 48px;
}
.section-head .badge { margin-bottom: 16px; }
.section-head h2 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-1);
}
.section-head p {
  margin-top: 12px;
  font-size: 14px;
  color: var(--text-2);
  max-width: 640px;
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.step-item {
  background: var(--alt);
  border: 1px solid var(--card-line);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all .35s var(--ease);
}
.step-item:hover {
  border-color: var(--card-line-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}
.step-num {
  display: block;
  font-family: var(--font-num);
  font-size: 36px;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 16px;
}
.step-item h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 10px;
}
.step-item p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.65;
}

/* ===== 亮点区 ===== */
.features-section {
  padding: 112px 0;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.feature-item {
  background: var(--alt);
  border: 1px solid var(--card-line);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: all .35s var(--ease);
}
.feature-item:hover {
  border-color: var(--card-line-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}
.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(201,166,107,0.1);
  border: 1px solid rgba(201,166,107,0.4);
  color: var(--gold);
  font-size: 20px;
}
.feature-item h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-1);
}
.feature-item p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 112px 0;
  background: var(--deep);
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0;
  font-size: 17px;
  font-weight: 500;
  color: var(--text-1);
  text-align: left;
  transition: color .35s var(--ease);
}
.faq-question:hover { color: var(--gold); }
.faq-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--line);
  color: var(--gold);
  font-size: 18px;
  font-weight: 400;
  flex-shrink: 0;
  transition: transform .35s var(--ease), border-color .35s var(--ease);
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  border-color: var(--gold);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s var(--ease);
}
.faq-answer p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.75;
  padding-bottom: 24px;
  max-width: 720px;
}

/* ===== CTA ===== */
.cta-section {
  padding: 112px 0;
}
.cta-inner {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 16px;
}
.cta-inner p {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 36px;
}
.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== 页脚 ===== */
.footer {
  background: var(--base);
  border-top: 1px solid var(--line);
  position: relative;
}
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  width: 720px;
  height: 400px;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at center, rgba(201,166,107,0.05) 0%, transparent 70%);
  pointer-events: none;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding: 72px 0 48px;
  position: relative;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-desc {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
  max-width: 320px;
  margin-top: 16px;
}
.footer-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 20px;
}
.footer-links ul li { margin-bottom: 12px; }
.footer-links a {
  font-size: 14px;
  color: var(--text-2);
  transition: color .35s var(--ease), padding-left .35s var(--ease);
}
.footer-links a:hover {
  color: var(--gold);
  padding-left: 4px;
}
.footer-contact p {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 12px;
}
.footer-contact a { color: var(--gold); }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: var(--text-3);
  position: relative;
}

/* ===== 响应式 ===== */
@media (max-width: 1199px) {
  .container { max-width: 94%; }
  .cat-hero h1 { font-size: 44px; }
}
@media (max-width: 1023px) {
  .cat-hero { padding: 140px 0 56px; }
  .entrance-cards, .steps-section, .features-section, .faq-section, .cta-section { padding: 80px 0; }
  .spotlight-card { grid-column: span 12; }
  .mini-stack { grid-column: span 12; flex-direction: row; }
  .mini-card { flex: 1; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}
@media (max-width: 767px) {
  .cat-hero h1 { font-size: 36px; }
  .cat-hero-desc { font-size: 15px; }
  .spotlight-media { height: 260px; }
  .mini-stack { flex-direction: column; }
  .mini-media { height: 200px; }
  .steps-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .section-head h2 { font-size: 28px; }
  .cta-inner h2 { font-size: 26px; }
}
@media (max-width: 575px) {
  .container { padding-left: 18px; padding-right: 18px; }
  .btn { width: 100%; }
  .cta-actions .btn { width: 100%; }
  .topbar-domain { font-size: 12px; }
  .topbar-link { font-size: 12px; }
  .spotlight-body { padding: 20px; }
  .spotlight-body h3 { font-size: 20px; }
  .feature-item { padding: 28px 22px; }
  .faq-question { font-size: 15px; }
  .footer-grid { padding: 48px 0 32px; }
}

/* ===== 滚动入场 ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* roulang page: article */
:root {
  --base: #0C0E11;
  --alt: #14171C;
  --deep: #101318;
  --gold: #C9A66B;
  --gold-hover: #DFBE86;
  --gold-disabled: rgba(201, 166, 107, 0.4);
  --accent: #38D6B6;
  --text-1: #EDEBE6;
  --text-2: #A5A19A;
  --text-3: #6B675F;
  --line: rgba(237, 235, 230, 0.08);
  --card-line: rgba(237, 235, 230, 0.06);
  --card-line-hover: rgba(201, 166, 107, 0.45);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --shadow-card: 0 20px 50px rgba(0, 0, 0, 0.45);
  --ease: cubic-bezier(0.2, 0.6, 0.3, 1);
  --container: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans SC', system-ui, -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-1);
  background-color: var(--base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.35s var(--ease), border-color 0.35s var(--ease), background-color 0.35s var(--ease), transform 0.35s var(--ease);
}

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

input {
  font-family: inherit;
  border: none;
  outline: none;
}

ul,
ol {
  list-style: none;
}

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

.no-scroll {
  overflow: hidden;
}

/* ===== 顶部信息条 ===== */
.topbar {
  position: relative;
  height: 38px;
  background: rgba(12, 14, 17, 0.92);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  z-index: 199;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.topbar-domain {
  font-family: 'Space Grotesk', monospace;
  font-size: 13px;
  color: var(--text-2);
  letter-spacing: 0.02em;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.online-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(56, 214, 182, 0.6);
}

.topbar-label {
  font-size: 13px;
  color: var(--text-2);
}

.topbar-action {
  font-size: 13px;
  font-weight: 500;
  color: var(--gold);
  border-bottom: 1px solid transparent;
}

.topbar-action:hover {
  border-bottom-color: var(--gold);
}

/* ===== 主导航 ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 200;
  height: 72px;
  background: transparent;
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.nav-scrolled {
  background: rgba(12, 14, 17, 0.85);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
}

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

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--base);
  border: 1px solid rgba(201, 166, 107, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--gold);
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text-1);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-left: auto;
}

.nav-link {
  position: relative;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  padding: 6px 0;
  transition: color 0.35s var(--ease);
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}

.nav-link:hover,
.nav-link.active {
  color: var(--gold);
}

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  background: var(--gold);
  color: var(--base);
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  transition: background 0.35s var(--ease), transform 0.35s var(--ease);
}

.nav-cta:hover {
  background: var(--gold-hover);
  transform: translateY(-2px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  z-index: 300;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--text-1);
  transition: transform 0.35s var(--ease), opacity 0.35s var(--ease);
}

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

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

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

/* ===== 面包屑 ===== */
.breadcrumb-wrap {
  padding: 32px 0 8px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--text-2);
}

.breadcrumb a {
  color: var(--text-2);
  transition: color 0.35s var(--ease);
}

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

.breadcrumb .sep {
  color: var(--text-3);
}

.breadcrumb .current {
  color: var(--text-1);
  max-width: 280px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ===== 文章头部 ===== */
.post-header {
  padding: 24px 0 32px;
}

.post-header .container {
  max-width: 820px;
}

.post-title {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text-1);
  margin-bottom: 20px;
}

.post-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 14px;
  font-size: 13px;
  color: var(--text-2);
}

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

.post-meta .meta-sep {
  color: var(--text-3);
}

.meta-date,
.meta-views .views-num {
  font-family: 'Space Grotesk', sans-serif;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 24px;
  padding: 0 10px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  line-height: 1;
}

.badge-gray {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-2);
}

.badge-gold {
  border: 1px solid rgba(201, 166, 107, 0.5);
  color: var(--gold);
}

.badge-accent {
  background: rgba(56, 214, 182, 0.1);
  color: var(--accent);
}

/* ===== 精选图 ===== */
.post-cover {
  padding: 0 0 40px;
}

.post-cover .container {
  max-width: 900px;
}

.post-cover img {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--card-line);
}

/* ===== 正文区 ===== */
.post-body {
  padding: 8px 0 56px;
  position: relative;
}

.post-body .container {
  max-width: 820px;
}

.post-content {
  max-width: 740px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(237, 235, 230, 0.92);
}

.post-content p {
  margin-bottom: 1.5em;
}

.post-content strong {
  color: var(--text-1);
  font-weight: 600;
}

.post-content h2 {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-1);
  margin: 2em 0 1em;
  padding-left: 16px;
  border-left: 4px solid var(--gold);
}

.post-content h3 {
  font-size: 22px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-1);
  margin: 1.8em 0 0.8em;
}

.post-content h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-1);
  margin: 1.6em 0 0.6em;
}

.post-content blockquote {
  margin: 1.5em 0;
  padding: 20px 24px;
  background: var(--alt);
  border-left: 4px solid var(--gold);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--text-2);
}

.post-content ul,
.post-content ol {
  margin: 1em 0 1.5em;
  padding-left: 2em;
}

.post-content li {
  margin-bottom: 0.5em;
  padding-left: 4px;
}

.post-content ul li {
  list-style: disc;
}

.post-content ul li::marker {
  color: var(--gold);
}

.post-content ol li {
  list-style: decimal;
}

.post-content ol li::marker {
  color: var(--gold);
  font-weight: 600;
}

.post-content img {
  width: 100%;
  border-radius: 8px;
  margin: 1.5em 0;
}

.post-content a {
  color: var(--gold);
  border-bottom: 1px solid rgba(201, 166, 107, 0.4);
  transition: border-color 0.35s var(--ease), color 0.35s var(--ease);
}

.post-content a:hover {
  border-bottom-color: var(--gold);
  color: var(--gold-hover);
}

.post-content pre {
  background: var(--deep);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px 20px;
  overflow-x: auto;
  margin: 1.5em 0;
  font-family: 'Space Grotesk', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-1);
}

.post-content code {
  font-family: 'Space Grotesk', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
  background: rgba(255, 255, 255, 0.06);
  padding: 2px 6px;
  border-radius: 6px;
}

.post-content pre code {
  background: none;
  padding: 0;
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 14px;
}

.post-content th,
.post-content td {
  border: 1px solid var(--line);
  padding: 12px 16px;
  text-align: left;
}

.post-content th {
  background: var(--alt);
  color: var(--gold);
  font-weight: 600;
  white-space: nowrap;
}

.post-content hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 2.5em 0;
}

/* ===== 标签行 ===== */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 32px 0 0;
  max-width: 740px;
  margin: 0 auto;
}

/* ===== 相关推荐 ===== */
.post-related {
  padding: 72px 0 48px;
  border-top: 1px solid var(--line);
  background: rgba(20, 23, 28, 0.35);
}

.post-related .container {
  max-width: 1080px;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-1);
  margin-bottom: 36px;
  text-align: center;
}

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

.related-card {
  display: block;
  background: var(--alt);
  border: 1px solid var(--card-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.related-card:hover {
  transform: translateY(-6px);
  border-color: var(--card-line-hover);
  box-shadow: var(--shadow-card);
}

.related-card .card-img {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.related-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.92);
  transition: transform 0.6s var(--ease), filter 0.6s var(--ease);
}

.related-card:hover .card-img img {
  transform: scale(1.03);
  filter: saturate(1.08);
}

.related-card .card-img .badge {
  position: absolute;
  top: 14px;
  left: 14px;
}

.related-card .card-body {
  padding: 22px 24px 24px;
}

.related-card .card-body h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--text-1);
  margin-bottom: 8px;
  transition: color 0.35s var(--ease);
}

.related-card:hover .card-body h3 {
  color: var(--gold);
}

.related-card .card-body p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-2);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== 返回按钮 ===== */
.post-back {
  padding: 48px 0 80px;
  text-align: center;
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(237, 235, 230, 0.3);
  color: var(--text-1);
  font-size: 15px;
  font-weight: 500;
  transition: border-color 0.35s var(--ease), color 0.35s var(--ease), transform 0.35s var(--ease);
}

.back-btn:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateX(-4px);
}

/* ===== 内容未找到 ===== */
.not-found-box {
  max-width: 680px;
  margin: 0 auto;
  padding: 80px 24px;
  text-align: center;
  border: 1px dashed rgba(237, 235, 230, 0.14);
  border-radius: var(--radius-lg);
  background: var(--alt);
}

.not-found-box .nf-icon {
  font-size: 44px;
  margin-bottom: 20px;
}

.not-found-box h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 12px;
}

.not-found-box p {
  font-size: 15px;
  color: var(--text-2);
  margin-bottom: 32px;
}

.not-found-box .nf-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  background: var(--gold);
  color: var(--base);
  font-size: 15px;
  font-weight: 700;
  transition: background 0.35s var(--ease), transform 0.35s var(--ease);
}

.not-found-box .nf-btn:hover {
  background: var(--gold-hover);
  transform: translateY(-2px);
}

/* ===== 页脚 ===== */
.footer {
  border-top: 1px solid var(--line);
  background: var(--base);
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 720px;
  height: 160px;
  background: radial-gradient(ellipse at center, rgba(201, 166, 107, 0.06), transparent 70%);
  pointer-events: none;
}

.footer .container {
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding: 64px 0 48px;
}

.footer-brand .logo {
  margin-bottom: 18px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-2);
  max-width: 320px;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}

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

.footer-links a {
  font-size: 14px;
  color: var(--text-2);
  transition: color 0.35s var(--ease);
}

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

.footer-contact p {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 12px;
}

.footer-contact a {
  color: var(--text-2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-contact a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.footer-bottom {
  padding: 22px 0;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--text-3);
  text-align: center;
  font-family: 'Space Grotesk', 'Noto Sans SC', sans-serif;
}

/* ===== 响应式 ===== */
@media (max-width: 1023px) {
  .nav {
    height: 64px;
  }
  .nav-inner {
    height: 64px;
  }
  .nav-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 28px;
    background: rgba(12, 14, 17, 0.98);
    -webkit-backdrop-filter: blur(24px);
    backdrop-filter: blur(24px);
    margin: 0;
    z-index: 250;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s var(--ease), visibility 0.35s;
  }
  .nav-open .nav-menu {
    opacity: 1;
    visibility: visible;
  }
  .nav-link {
    font-size: 22px;
    font-weight: 600;
  }
  .nav-cta {
    position: fixed;
    bottom: 48px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 260;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s var(--ease) 0.1s, visibility 0.35s;
    width: calc(100% - 48px);
    max-width: 320px;
    justify-content: center;
  }
  .nav-open .nav-cta {
    opacity: 1;
    visibility: visible;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-inner {
    justify-content: space-between;
  }
  .logo-text {
    font-size: 17px;
  }
  .post-title {
    font-size: 34px;
  }
  .related-grid {
    gap: 16px;
  }
  .section-title {
    font-size: 28px;
  }
}

@media (max-width: 767px) {
  .container {
    padding: 0 20px;
  }
  .topbar-inner {
    padding: 0 20px;
  }
  .topbar-label {
    display: none;
  }
  .breadcrumb-wrap {
    padding: 24px 0 4px;
  }
  .breadcrumb .current {
    max-width: 180px;
  }
  .post-header {
    padding: 16px 0 24px;
  }
  .post-title {
    font-size: 28px;
    line-height: 1.3;
  }
  .post-meta {
    gap: 8px 10px;
    font-size: 12px;
  }
  .post-cover {
    padding-bottom: 24px;
  }
  .post-body {
    padding-bottom: 40px;
  }
  .post-content {
    font-size: 15px;
    line-height: 1.85;
  }
  .post-content h2 {
    font-size: 24px;
    padding-left: 12px;
  }
  .post-content h3 {
    font-size: 19px;
  }
  .post-content blockquote {
    padding: 16px 18px;
  }
  .post-content pre {
    padding: 14px 16px;
    font-size: 13px;
  }
  .post-related {
    padding: 56px 0 32px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .related-card .card-body {
    padding: 18px 20px 20px;
  }
  .post-back {
    padding: 36px 0 64px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 48px 0 40px;
  }
  .footer-desc {
    max-width: 100%;
  }
  .footer-bottom {
    font-size: 12px;
    padding: 18px 12px;
  }
}

@media (max-width: 575px) {
  .topbar-right .topbar-action {
    font-size: 12px;
  }
  .topbar-domain {
    font-size: 12px;
  }
  .post-title {
    font-size: 25px;
  }
  .post-content h2 {
    font-size: 21px;
  }
  .post-content h3 {
    font-size: 18px;
  }
  .post-content {
    font-size: 15px;
  }
  .section-title {
    font-size: 24px;
  }
  .back-btn {
    width: 100%;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ===== 滚动入场动画 ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* roulang page: category2 */
:root {
  --base: #0C0E11;
  --alt: #14171C;
  --deep: #101318;
  --gold: #C9A66B;
  --gold-hover: #DFBE86;
  --gold-disabled: rgba(201, 166, 107, 0.4);
  --accent: #38D6B6;
  --text-1: #EDEBE6;
  --text-2: #A5A19A;
  --text-3: #6B675F;
  --line: rgba(237, 235, 230, 0.08);
  --card-line: rgba(237, 235, 230, 0.06);
  --card-line-hover: rgba(201, 166, 107, 0.45);
  --radius-lg: 16px;
  --radius-sm: 12px;
  --radius-pill: 999px;
  --shadow-hover: 0 20px 50px rgba(0, 0, 0, 0.45);
  --ease: cubic-bezier(0.2, 0.6, 0.3, 1);
  --side-padding: 24px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--base);
  color: var(--text-1);
  font-family: 'Noto Sans SC', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  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 0.35s var(--ease); }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input { font-family: inherit; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--side-padding); }

/* 顶部信息条 */
.topbar {
  height: 38px;
  width: 100%;
  background: rgba(12, 14, 17, 0.92);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
}
.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.topbar-domain {
  font-family: 'Space Grotesk', 'Noto Sans SC', sans-serif;
  font-size: 13px;
  color: var(--text-2);
  letter-spacing: 0.02em;
}
.topbar-right { display: flex; align-items: center; gap: 16px; }
.topbar-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-2);
}
.topbar-status .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}
.topbar-link {
  color: var(--gold);
  font-size: 13px;
  font-weight: 500;
  transition: color 0.35s var(--ease);
}
.topbar-link:hover { color: var(--gold-hover); }

/* 导航 */
.nav {
  position: fixed;
  top: 38px;
  left: 0;
  width: 100%;
  height: 72px;
  z-index: 999;
  background: transparent;
  transition: background 0.35s var(--ease), box-shadow 0.35s var(--ease), backdrop-filter 0.35s var(--ease);
}
.nav.scrolled {
  background: rgba(12, 14, 17, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: #0C0E11;
  border: 1px solid rgba(201, 166, 107, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', 'Noto Sans SC', sans-serif;
  font-weight: 700;
  font-size: 20px;
  color: var(--gold);
}
.logo-text { font-size: 20px; font-weight: 700; letter-spacing: -0.01em; color: var(--text-1); }
.nav-menu { display: flex; align-items: center; gap: 32px; }
.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  position: relative;
  padding: 6px 0;
  transition: color 0.35s var(--ease);
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.nav-link:hover { color: var(--gold); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active { color: var(--gold); }
.nav-link.active::after { transform: scaleX(1); }
.nav-cta {
  background: var(--gold);
  color: #0C0E11;
  font-size: 14px;
  font-weight: 700;
  padding: 10px 22px;
  border-radius: 999px;
  transition: background 0.35s var(--ease), transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
  white-space: nowrap;
}
.nav-cta:hover { background: var(--gold-hover); transform: translateY(-2px); }
.nav-cta:active { transform: scale(0.97); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-1);
  border-radius: 2px;
  transition: background 0.35s var(--ease);
}

/* Hero 横幅 */
.category-hero {
  position: relative;
  padding: 180px 0 120px;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  min-height: 520px;
  display: flex;
  align-items: center;
}
.category-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12,14,17,0.72) 0%, rgba(12,14,17,0.55) 50%, #0C0E11 96%);
}
.hero-content { position: relative; z-index: 2; max-width: 720px; }
.hero-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-3);
  margin-bottom: 24px;
  font-family: 'Space Grotesk', 'Noto Sans SC', sans-serif;
}
.hero-breadcrumb a { color: var(--text-3); transition: color 0.35s var(--ease); }
.hero-breadcrumb a:hover { color: var(--gold); }
.hero-breadcrumb span { color: var(--gold); }
.hero-tag {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(201, 166, 107, 0.1);
  border: 1px solid rgba(201, 166, 107, 0.4);
  color: var(--gold);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 20px;
}
.hero-title {
  font-size: 52px;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-1);
  margin-bottom: 20px;
}
.hero-title em { font-style: normal; color: var(--gold); }
.hero-desc {
  font-size: 16px;
  color: var(--text-2);
  max-width: 620px;
  line-height: 1.8;
  margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  padding: 14px 28px;
  transition: all 0.35s var(--ease);
  border: none;
  outline: none;
}
.btn-primary { background: var(--gold); color: #0C0E11; }
.btn-primary:hover { background: var(--gold-hover); transform: translateY(-2px); }
.btn-primary:active { transform: scale(0.97); }
.btn-primary:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.btn-outline { background: transparent; border: 1px solid rgba(255, 255, 255, 0.3); color: var(--text-1); }
.btn-outline:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); }
.btn-outline:active { transform: scale(0.97); }
.btn-outline:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.btn-text { display: inline-flex; align-items: center; gap: 6px; color: var(--gold); font-size: 15px; font-weight: 600; background: none; border: none; padding: 0; }
.btn-text:hover span { transform: translateX(4px); }
.btn-text span { transition: transform 0.35s var(--ease); display: inline-block; }

/* 通用 Section */
.section { padding: 112px 0; }
.section-alt { background: var(--alt); }
.section-deep { background: var(--deep); }
.section-head { margin-bottom: 56px; max-width: 720px; }
.section-tag {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(56, 214, 182, 0.1);
  color: var(--accent);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
}
.section-title { font-size: 34px; line-height: 1.25; font-weight: 700; letter-spacing: -0.01em; color: var(--text-1); margin-bottom: 16px; }
.section-desc { font-size: 16px; color: var(--text-2); max-width: 680px; line-height: 1.8; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head.center .section-desc { margin-left: auto; margin-right: auto; }

/* 保障卡片区 2+1 错位 */
.guarantee-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.guarantee-card {
  background: var(--alt);
  border: 1px solid var(--card-line);
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.guarantee-card:hover {
  transform: translateY(-6px);
  border-color: var(--card-line-hover);
  box-shadow: var(--shadow-hover);
}
.guarantee-card .card-media { position: relative; overflow: hidden; aspect-ratio: 16 / 10; }
.guarantee-card .card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease), filter 0.6s var(--ease); filter: saturate(0.92); }
.guarantee-card:hover .card-media img { transform: scale(1.03); filter: saturate(1.08); }
.guarantee-card .card-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  background: rgba(12, 14, 17, 0.75);
  border: 1px solid rgba(201, 166, 107, 0.4);
  color: var(--gold);
}
.guarantee-card .card-body { padding: 28px; }
.guarantee-card .card-title { font-size: 20px; font-weight: 600; color: var(--text-1); margin-bottom: 12px; }
.guarantee-card .card-desc { font-size: 14px; color: var(--text-2); line-height: 1.75; }
.guarantee-card.offset { grid-column: 2; }

/* 保障流程 */
.steps-section { background: var(--base); }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step {
  background: var(--alt);
  border: 1px solid var(--card-line);
  border-radius: 16px;
  padding: 36px 28px;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease);
}
.step:hover { transform: translateY(-6px); border-color: var(--card-line-hover); }
.step-num {
  font-family: 'Space Grotesk', 'Noto Sans SC', sans-serif;
  font-size: 42px;
  font-weight: 600;
  color: var(--gold);
  line-height: 1;
  display: block;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.step-title { font-size: 18px; font-weight: 600; color: var(--text-1); margin-bottom: 10px; }
.step-desc { font-size: 14px; color: var(--text-2); line-height: 1.65; }

/* 图文分栏 */
.split-grid {
  display: grid;
  grid-template-columns: 5fr 6fr;
  gap: 64px;
  align-items: center;
}
.split-media { position: relative; }
.split-media img {
  border-radius: 16px;
  width: 100%;
  aspect-ratio: 5 / 6;
  object-fit: cover;
  position: relative;
  z-index: 1;
}
.split-media::after {
  content: '';
  position: absolute;
  top: 16px;
  left: 16px;
  right: -16px;
  bottom: -16px;
  border-radius: 16px;
  border: 1px solid rgba(201, 166, 107, 0.4);
  z-index: 0;
  pointer-events: none;
}
.split-content .section-tag { display: inline-flex; margin-bottom: 16px; }
.split-content h2 { font-size: 34px; line-height: 1.25; font-weight: 700; letter-spacing: -0.01em; margin-bottom: 20px; }
.split-content p { font-size: 16px; color: var(--text-2); line-height: 1.8; margin-bottom: 16px; max-width: 560px; }
.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
  border-top: 1px solid var(--line);
  padding-top: 30px;
}
.stat-item .stat-num {
  font-family: 'Space Grotesk', 'Noto Sans SC', sans-serif;
  font-size: 44px;
  font-weight: 600;
  color: var(--gold);
  line-height: 1.1;
  letter-spacing: -0.02em;
  display: block;
  margin-bottom: 6px;
}
.stat-item .stat-label { font-size: 14px; color: var(--text-3); }

/* FAQ */
.faq-section { background: var(--alt); }
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0;
  font-size: 18px;
  font-weight: 500;
  color: var(--text-1);
  text-align: left;
  transition: color 0.35s var(--ease);
}
.faq-question:hover { color: var(--gold); }
.faq-question .icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid rgba(237, 235, 230, 0.15);
  font-size: 18px;
  line-height: 1;
  transition: transform 0.35s var(--ease), background 0.35s var(--ease), color 0.35s var(--ease);
}
.faq-item.open .faq-question { color: var(--gold); }
.faq-item.open .faq-question .icon { transform: rotate(45deg); border-color: var(--gold); color: var(--gold); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s var(--ease);
}
.faq-answer-inner {
  padding: 0 40px 24px 0;
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.8;
  max-width: 720px;
}

/* CTA */
.cta-section {
  text-align: center;
  padding: 100px 0;
  background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  position: relative;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(12, 14, 17, 0.88);
}
.cta-inner { position: relative; z-index: 1; }
.cta-title { font-size: 32px; font-weight: 800; letter-spacing: -0.01em; color: var(--text-1); margin-bottom: 16px; }
.cta-title em { font-style: normal; color: var(--gold); }
.cta-desc { font-size: 14px; color: var(--text-2); margin-bottom: 32px; max-width: 520px; margin-left: auto; margin-right: auto; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* Footer */
.footer { background: var(--base); border-top: 1px solid var(--line); padding: 72px 0 32px; position: relative; }
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 1px;
  background: radial-gradient(ellipse at center, rgba(201, 166, 107, 0.2) 0%, transparent 70%);
}
.footer-grid { display: grid; grid-template-columns: 2fr 1.2fr 1.5fr; gap: 48px; margin-bottom: 48px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-desc { font-size: 14px; color: var(--text-3); line-height: 1.7; max-width: 260px; }
.footer-title { font-size: 15px; font-weight: 600; color: var(--text-1); margin-bottom: 18px; }
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; color: var(--text-2); transition: color 0.35s var(--ease); }
.footer-links a:hover { color: var(--gold); }
.footer-contact { font-size: 14px; color: var(--text-2); line-height: 2; }
.footer-contact a { color: var(--text-2); transition: color 0.35s var(--ease); }
.footer-contact a:hover { color: var(--gold); }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 24px;
  font-family: 'Space Grotesk', 'Noto Sans SC', sans-serif;
  font-size: 13px;
  color: var(--text-3);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* Reveal 动画 */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.35s var(--ease), transform 0.35s var(--ease); }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* 响应式 */
@media (max-width: 1199px) {
  .container, .nav-inner, .topbar-inner { width: 94%; }
  .hero-title { font-size: 44px; }
  .split-grid { gap: 40px; }
}
@media (max-width: 1023px) {
  .nav-menu { display: none; }
  .nav-cta { display: block; margin-right: 0; }
  .nav-toggle { display: flex; }
  .nav { height: 64px; }
  .nav-inner { flex-wrap: nowrap; }
  .section { padding: 96px 0; }
  .hero-title { font-size: 40px; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .split-grid { grid-template-columns: 1fr; }
  .split-media { order: -1; }
  .split-media img { max-height: 420px; object-fit: cover; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 767px) {
  .topbar-domain { font-size: 12px; }
  .nav-cta { display: none; }
  .section { padding: 72px 0; }
  .section-title { font-size: 26px; }
  .hero-title { font-size: 34px; }
  .hero-desc { font-size: 15px; }
  .guarantee-grid { grid-template-columns: 1fr; }
  .guarantee-card.offset { grid-column: auto; }
  .steps-grid { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-title { font-size: 24px; }
  .faq-question { font-size: 16px; }
  .category-hero { padding: 140px 0 80px; }
}
@media (max-width: 575px) {
  .container, .nav-inner, .topbar-inner { padding: 0 16px; }
  .hero-title { font-size: 30px; }
  .btn { width: 100%; justify-content: center; }
  .hero-actions { flex-direction: column; gap: 12px; }
  .cta-actions { flex-direction: column; width: 100%; }
  .cta-actions .btn { width: 100%; justify-content: center; }
  .section-title { font-size: 24px; }
  .split-content h2 { font-size: 24px; }
  .stat-num { font-size: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* 移动端抽屉菜单 */
.nav-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(12, 14, 17, 0.97);
  z-index: 998;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s var(--ease), visibility 0.35s var(--ease);
}
.nav-drawer.open { opacity: 1; visibility: visible; }
.nav-drawer a {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-1);
  transition: color 0.35s var(--ease);
}
.nav-drawer a:hover, .nav-drawer a.active { color: var(--gold); }
.nav-drawer-close {
  position: absolute;
  top: 30px;
  right: 24px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--text-1);
  background: rgba(255, 255, 255, 0.06);
  border-radius: 50%;
  transition: background 0.35s var(--ease), color 0.35s var(--ease);
}
.nav-drawer-close:hover { background: rgba(255, 255, 255, 0.1); color: var(--gold); }

/* roulang page: category3 */
:root {
  --base: #0C0E11;
  --alt: #14171C;
  --deep: #101318;
  --gold: #C9A66B;
  --gold-hover: #DFBE86;
  --gold-disabled: rgba(201,166,107,0.4);
  --accent: #38D6B6;
  --text-1: #EDEBE6;
  --text-2: #A5A19A;
  --text-3: #6B675F;
  --line: rgba(237,235,230,0.08);
  --card-line: rgba(237,235,230,0.06);
  --card-line-hover: rgba(201,166,107,0.45);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --shadow-card: 0 20px 50px rgba(0,0,0,0.45);
  --ease: cubic-bezier(0.2, 0.6, 0.3, 1);
  --container-w: 1200px;
  --section-space: 112px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: "Noto Sans SC", system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--base);
  color: var(--text-1);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  letter-spacing: 0.01em;
}

img {
  display: block;
  max-width: 100%;
  border-radius: 8px;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.35s var(--ease);
}

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
  border-radius: 4px;
}

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

ul, ol {
  list-style: none;
}

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

/* 顶部信息条 */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 38px;
  background: rgba(12,14,17,0.92);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  z-index: 101;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.topbar-domain {
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  font-size: 13px;
  color: var(--text-2);
  letter-spacing: 0.02em;
}

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

.topbar-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-2);
}

.topbar-status .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}

.topbar-link {
  font-size: 13px;
  font-weight: 500;
  color: var(--gold);
}

.topbar-link:hover {
  color: var(--gold-hover);
}

/* 主导航 */
.nav {
  position: fixed;
  top: 38px;
  left: 0;
  right: 0;
  height: 72px;
  z-index: 100;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease), backdrop-filter 0.35s var(--ease);
}

.nav.scrolled {
  background: rgba(12,14,17,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(237,235,230,0.08);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

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

.logo-mark {
  width: 36px;
  height: 36px;
  background: #0C0E11;
  border: 1px solid var(--card-line-hover);
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: "Space Grotesk", sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--gold);
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-1);
  letter-spacing: 0.02em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  position: relative;
  padding: 6px 0;
  transition: color 0.35s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.35s var(--ease);
}

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

.nav-link:hover::after {
  transform: scaleX(1);
}

.nav-link.active {
  color: var(--gold);
  font-weight: 600;
}

.nav-link.active::after {
  transform: scaleX(1);
  background: var(--gold);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  background: var(--gold);
  color: #0C0E11;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-pill);
  transition: background 0.35s var(--ease), transform 0.35s var(--ease), color 0.35s var(--ease);
  flex-shrink: 0;
}

.nav-cta:hover {
  background: var(--gold-hover);
  transform: translateY(-2px);
  color: #0C0E11;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--alt);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-1);
  border-radius: 2px;
  transition: transform 0.35s var(--ease), opacity 0.35s var(--ease);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 主内容区 */
.main {
  padding-top: 110px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--radius-pill);
  transition: all 0.35s var(--ease);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--gold);
  color: #0C0E11;
}

.btn-primary:hover {
  background: var(--gold-hover);
  transform: translateY(-2px);
  color: #0C0E11;
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-secondary {
  background: transparent;
  border: 1px solid rgba(237,235,230,0.3);
  color: var(--text-1);
}

.btn-secondary:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-2px);
}

.btn-secondary:active {
  transform: scale(0.97);
}

/* 徽章 */
.badge {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  font-size: 13px;
  border-radius: var(--radius-pill);
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1;
}

.badge-gold {
  border: 1px solid rgba(201,166,107,0.5);
  color: var(--gold);
}

.badge-accent {
  background: rgba(56,214,182,0.1);
  color: var(--accent);
}

.badge-gray {
  background: rgba(255,255,255,0.06);
  color: var(--text-2);
}

/* 页面头部 */
.page-head {
  padding: 140px 0 72px;
}

.breadcrumb {
  font-size: 14px;
  color: var(--text-3);
  margin-bottom: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.breadcrumb a {
  color: var(--text-2);
}

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

.page-title {
  font-size: 48px;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-1);
  margin-bottom: 24px;
}

.page-intro {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-2);
  max-width: 720px;
}

/* 交错图文区 */
.alternate-section {
  padding-bottom: var(--section-space);
}

.alternate-grid {
  display: flex;
  flex-direction: column;
  gap: 96px;
}

.alternate-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.alternate-item.reverse .alternate-media {
  order: 2;
}

.alternate-item.reverse .alternate-content {
  order: 1;
}

.alternate-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--card-line);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.alternate-media:hover {
  transform: translateY(-4px);
  border-color: var(--card-line-hover);
  box-shadow: var(--shadow-card);
}

.alternate-media img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  border-radius: 0;
  transition: transform 0.6s var(--ease), filter 0.6s var(--ease);
  filter: saturate(0.92);
}

.alternate-media:hover img {
  transform: scale(1.03);
  filter: saturate(1.08);
}

.alternate-content .badge {
  margin-bottom: 20px;
}

.alternate-content h2 {
  font-size: 32px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.alternate-content p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-2);
  max-width: 520px;
}

/* 内容类型速览 */
.type-section {
  padding: var(--section-space) 0;
  background: var(--alt);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head {
  margin-bottom: 56px;
}

.section-head.center {
  text-align: center;
}

.section-head.center .section-title::after {
  left: 50%;
  transform: translateX(-50%);
}

.section-head p {
  font-size: 14px;
  color: var(--text-3);
  margin-top: 12px;
}

.section-title {
  font-size: 34px;
  line-height: 1.25;
  font-weight: 700;
  color: var(--text-1);
  position: relative;
  padding-bottom: 16px;
  letter-spacing: -0.01em;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 48px;
  height: 3px;
  background: var(--gold);
  border-radius: 2px;
}

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

.type-card {
  background: var(--base);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--card-line);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.type-card:hover {
  transform: translateY(-6px);
  border-color: var(--card-line-hover);
  box-shadow: var(--shadow-card);
}

.type-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 0;
  filter: saturate(0.92);
  transition: transform 0.6s var(--ease), filter 0.6s var(--ease);
}

.type-card:hover img {
  transform: scale(1.03);
  filter: saturate(1.08);
}

.type-card-body {
  padding: 24px 24px 28px;
}

.type-card-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 12px;
}

.type-card-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-2);
}

/* 三步流程 */
.steps-section {
  padding: var(--section-space) 0;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  position: relative;
}

.step-item {
  text-align: center;
  padding: 40px 28px;
  background: var(--alt);
  border-radius: var(--radius-lg);
  border: 1px solid var(--card-line);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.step-item:hover {
  transform: translateY(-6px);
  border-color: var(--card-line-hover);
  box-shadow: var(--shadow-card);
}

.step-num {
  display: block;
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  font-size: 44px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 20px;
}

.step-item h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 14px;
}

.step-item p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-2);
  max-width: 280px;
  margin: 0 auto;
}

/* FAQ */
.faq-section {
  padding: var(--section-space) 0;
  background: var(--alt);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--line);
  transition: background 0.35s var(--ease);
}

.faq-item:first-child {
  border-top: 1px solid var(--line);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  font-size: 18px;
  font-weight: 500;
  color: var(--text-1);
  text-align: left;
  transition: color 0.35s var(--ease);
}

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

.faq-icon {
  position: relative;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform 0.35s var(--ease);
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  background: var(--text-2);
  border-radius: 1px;
  transition: background 0.35s var(--ease);
}

.faq-icon::before {
  left: 2px;
  right: 2px;
  top: 9px;
  height: 2px;
}

.faq-icon::after {
  top: 2px;
  bottom: 2px;
  left: 9px;
  width: 2px;
}

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

.faq-item.open .faq-icon::before,
.faq-item.open .faq-icon::after {
  background: var(--gold);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s var(--ease);
}

.faq-answer p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-2);
  padding-bottom: 24px;
  max-width: 720px;
}

.faq-item.open .faq-answer {
  max-height: 400px;
}

/* CTA */
.cta-section {
  padding: var(--section-space) 0;
  position: relative;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12,14,17,0.78) 0%, rgba(12,14,17,0.94) 100%);
}

.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 24px 0;
}

.cta-title {
  font-size: 32px;
  line-height: 1.3;
  font-weight: 800;
  color: var(--text-1);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.cta-desc {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 32px;
}

.cta-inner .btn-primary {
  font-size: 16px;
  padding: 16px 36px;
}

/* 返回首页 */
.back-home {
  padding: 56px 24px 80px;
  text-align: center;
}

/* 页脚 */
.footer {
  background: var(--base);
  border-top: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: "";
  position: absolute;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 200px;
  background: radial-gradient(ellipse, rgba(201,166,107,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.footer .container {
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding: 72px 0 48px;
}

.footer-brand .logo {
  margin-bottom: 20px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-2);
  max-width: 340px;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

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

.footer-links a {
  font-size: 14px;
  color: var(--text-2);
  transition: color 0.35s var(--ease);
}

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

.footer-contact p {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 10px;
  line-height: 1.8;
}

.footer-contact a {
  color: var(--text-2);
  transition: color 0.35s var(--ease);
}

.footer-contact a:hover {
  color: var(--gold);
}

.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 24px 0;
  font-size: 13px;
  color: var(--text-3);
  text-align: center;
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  letter-spacing: 0.02em;
}

/* 滚动入场 */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.type-card:nth-child(2) {
  transition-delay: 0.08s;
}

.type-card:nth-child(3) {
  transition-delay: 0.16s;
}

.type-card:nth-child(4) {
  transition-delay: 0.24s;
}

/* 响应式 */
@media (max-width: 1199px) {
  .container {
    max-width: 94%;
  }

  .nav-inner {
    max-width: 94%;
  }

  .page-title {
    font-size: 42px;
  }

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

  .alternate-item {
    gap: 40px;
  }
}

@media (max-width: 1023px) {
  :root {
    --section-space: 96px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 110px;
    left: 0;
    right: 0;
    background: rgba(12,14,17,0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 28px 24px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: all 0.4s var(--ease);
    z-index: 99;
    border-bottom: 1px solid var(--line);
    display: flex;
  }

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

  .nav-menu .nav-link {
    font-size: 18px;
    font-weight: 600;
    padding: 14px 0;
    width: 100%;
    color: var(--text-1);
  }

  .nav-menu .nav-link.active {
    color: var(--gold);
  }

  .nav-menu .nav-link::after {
    display: none;
  }

  .nav-cta {
    position: fixed;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    width: calc(100% - 48px);
    max-width: 400px;
    text-align: center;
    justify-content: center;
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s var(--ease);
    display: inline-flex;
  }

  .nav-cta.open {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 767px) {
  :root {
    --section-space: 72px;
  }

  .page-head {
    padding: 110px 0 56px;
  }

  .page-title {
    font-size: 34px;
  }

  .page-intro {
    font-size: 15px;
  }

  .alternate-item,
  .alternate-item.reverse {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .alternate-item.reverse .alternate-media,
  .alternate-item.reverse .alternate-content {
    order: initial;
  }

  .alternate-media img {
    height: 260px;
  }

  .alternate-content h2 {
    font-size: 26px;
  }

  .section-title {
    font-size: 28px;
  }

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

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

  .cta-title {
    font-size: 26px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 56px 0 40px;
  }
}

@media (max-width: 575px) {
  .container {
    padding: 0 18px;
  }

  .nav-inner {
    padding: 0 18px;
  }

  body {
    font-size: 15px;
  }

  .topbar-domain {
    font-size: 12px;
  }

  .topbar-right {
    gap: 8px;
  }

  .topbar-status {
    display: none;
  }

  .topbar-link {
    font-size: 12px;
  }

  .btn {
    width: 100%;
    padding: 14px 20px;
  }

  .cta-inner .btn-primary {
    width: 100%;
    max-width: 360px;
  }

  .alternate-media img {
    height: 220px;
  }

  .page-title {
    font-size: 30px;
  }

  .section-title {
    font-size: 26px;
  }

  .faq-question {
    font-size: 16px;
    padding: 18px 0;
  }

  .footer-grid {
    padding: 48px 0 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}