/* roulang page: index */
:root {
  --primary: #1E3A34;
  --primary-dark: #142824;
  --gold: #C6A15B;
  --gold-light: #D3B072;
  --moss: #2F6B5C;
  --bg: #FAF8F4;
  --text: #171F1C;
  --text-secondary: #5B6A65;
  --text-weak: #8A9893;
  --border: #E8E2D8;
  --border-dark: rgba(255,255,255,0.14);
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --shadow: 0 1px 2px rgba(23,31,28,0.04), 0 4px 12px rgba(23,31,28,0.05);
  --shadow-hover: 0 8px 28px rgba(23,31,28,0.10), 0 2px 6px rgba(198,161,91,0.12);
  --shadow-nav: 0 4px 20px rgba(23,31,28,0.06);
  --section-space: 96px;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-num: "Inter", "DIN Alternate", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; }
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.section { padding: var(--section-space) 0; }
.section-head {
  margin-bottom: 48px;
  max-width: 640px;
}
.section-head-center { margin-left: auto; margin-right: auto; text-align: center; }
.section-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-eyebrow .eyebrow-line {
  width: 24px;
  height: 1px;
  background: var(--gold);
  display: inline-block;
}
.section-head h2 {
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--primary);
  margin-bottom: 12px;
}
.section-head .section-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.section-head-light h2 { color: #fff; }
.section-head-light .section-desc { color: rgba(255,255,255,0.7); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: all 0.22s ease;
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}
.btn:active { transform: translateY(0) !important; opacity: 0.9; }
.btn-gold {
  background: linear-gradient(135deg, #D3B072 0%, #C6A15B 100%);
  color: var(--primary);
  box-shadow: 0 4px 14px rgba(198,161,91,0.28);
}
.btn-gold:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(198,161,91,0.36);
}
.btn-outline {
  background: transparent;
  border-color: var(--gold);
  color: var(--gold);
}
.btn-outline:hover {
  background: rgba(198,161,91,0.10);
  transform: translateY(-1px);
}
.btn-outline-light {
  background: transparent;
  border-color: rgba(255,255,255,0.7);
  color: #fff;
}
.btn-outline-light:hover {
  background: rgba(255,255,255,0.10);
  border-color: #fff;
  transform: translateY(-1px);
}
.btn-lg { height: 52px; padding: 0 36px; font-size: 15px; }
.btn-sm { height: 36px; padding: 0 18px; font-size: 13px; }
.btn-block { width: 100%; }
.link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--moss);
  transition: all 0.22s ease;
  border-bottom: 1px dashed rgba(47,107,92,0.4);
  padding-bottom: 2px;
}
.link-more:hover { color: var(--gold); gap: 10px; border-bottom-color: var(--gold); }

/* ===== Badge / Tag ===== */
.badge {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  background: #EFEBE3;
  color: var(--primary);
  white-space: nowrap;
}
.badge-gold {
  background: rgba(198,161,91,0.18);
  color: var(--gold);
}
.badge-dark {
  background: rgba(255,255,255,0.10);
  color: #D8C9A8;
  border: 1px solid rgba(255,255,255,0.12);
}
.badge-light {
  background: rgba(198,161,91,0.12);
  color: var(--moss);
}

/* ===== Header / Nav ===== */
.site-header {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: 72px;
  background: rgba(250,248,244,0.60);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid rgba(198,161,91,0.16);
  transition: all 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.site-header.scrolled {
  position: fixed;
  height: 64px;
  background: rgba(250,248,244,0.92);
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-nav);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-mark {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.02em;
  position: relative;
}
.logo-mark .logo-dot {
  display: inline-block;
  width: 5px;
  height: 5px;
  background: var(--gold);
  border-radius: 50%;
  margin-left: 2px;
  vertical-align: super;
}
.logo-text {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.3em;
  color: var(--text-secondary);
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  padding: 8px 2px;
  transition: color 0.22s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
  transition: width 0.3s ease;
}
.nav-link:hover { color: var(--moss); }
.nav-link:hover::after { width: 20px; }
.nav-link.active { color: var(--primary); }
.nav-link.active::after { width: 20px; }
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: 6px;
}
.toggle-bar {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.nav-toggle.open .toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open .toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle.open .toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-menu {
  position: fixed;
  top: 0; right: -100%;
  width: 100%;
  height: 100vh;
  background: rgba(250,248,244,0.98);
  backdrop-filter: blur(18px);
  z-index: 999;
  transition: right 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
  display: flex;
  align-items: center;
  justify-content: center;
}
.mobile-menu.open { right: 0; }
.mobile-menu-inner {
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding: 40px;
  width: 100%;
  max-width: 400px;
}
.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.mobile-nav-link {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--text);
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  transition: color 0.22s ease;
}
.mobile-nav-link:hover { color: var(--gold); }
.mobile-nav-link.active { color: var(--primary); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 72px;
  background-color: var(--primary-dark);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(20,40,36,0.82) 0%, rgba(20,40,36,0.55) 50%, rgba(20,40,36,0.30) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 80px;
  padding-bottom: 120px;
  max-width: 760px;
}
.hero-eyebrow {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.24em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 20px;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.1s forwards;
}
.hero-title {
  font-family: var(--font-serif);
  font-size: 42px;
  font-weight: 600;
  line-height: 1.3;
  color: #fff;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.15s forwards;
}
.hero-title-sub {
  display: block;
  font-size: 24px;
  font-weight: 400;
  color: rgba(255,255,255,0.8);
  margin-top: 8px;
  letter-spacing: 0.02em;
}
.hero-subtitle {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255,255,255,0.6);
  margin-bottom: 36px;
  max-width: 480px;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.2s forwards;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.25s forwards;
}
.hero-stats {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  z-index: 2;
  background: rgba(20,40,36,0.45);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid rgba(255,255,255,0.08);
}
.hero-stats-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding-top: 28px;
  padding-bottom: 28px;
}
.stat-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-left: 1px solid rgba(255,255,255,0.12);
  padding-left: 20px;
}
.stat-item:first-child { border-left: none; padding-left: 0; }
.stat-num {
  font-family: var(--font-num);
  font-size: 28px;
  font-weight: 600;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.06em;
}
.hero-scroll {
  position: absolute;
  bottom: 140px;
  right: 40px;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.scroll-text {
  font-size: 10px;
  letter-spacing: 0.3em;
  color: rgba(255,255,255,0.5);
  writing-mode: vertical-rl;
}
.scroll-line {
  width: 1px;
  height: 32px;
  background: rgba(255,255,255,0.25);
  position: relative;
  overflow: hidden;
}
.scroll-line::after {
  content: "";
  position: absolute;
  top: -10px;
  left: 0;
  width: 100%;
  height: 10px;
  background: var(--gold);
  border-radius: 2px;
  animation: scrollDot 2s ease-in-out infinite;
}
@keyframes scrollDot {
  0% { top: -10px; }
  100% { top: 32px; }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== Trust Bar ===== */
.trust-bar {
  border-bottom: 1px solid var(--border);
  background: #fff;
  padding: 28px 0;
}
.trust-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.trust-item {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-weak);
  letter-spacing: 0.08em;
  transition: color 0.22s ease;
  white-space: nowrap;
}
.trust-item:hover { color: var(--primary); }

/* ===== Platform Section ===== */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}
.platform-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: var(--shadow);
}
.platform-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
  box-shadow: var(--shadow-hover);
}
.platform-card-large { grid-column: span 6; }
.platform-card-small { grid-column: span 3; }
.platform-card-img {
  height: 200px;
  overflow: hidden;
}
.platform-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.platform-card:hover .platform-card-img img { transform: scale(1.04); }
.platform-card-body { padding: 28px; }
.platform-card-body .badge { margin-bottom: 14px; }
.platform-card-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}
.platform-card-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 18px;
}
.platform-card-small .platform-card-body { padding: 24px; }
.platform-card-small h3 { font-size: 16px; margin-bottom: 8px; }
.platform-card-small p { font-size: 13px; margin-bottom: 14px; }
.platform-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(30,58,52,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 20px;
}
.platform-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
}
.feature-item {
  padding: 28px 24px;
  border-left: 1px solid var(--border);
  transition: background 0.22s ease;
}
.feature-item:first-child { border-left: none; }
.feature-item:hover { background: rgba(250,248,244,0.6); }
.feature-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(30,58,52,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  font-size: 16px;
  color: var(--gold);
}
.feature-title {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}
.feature-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== Scenarios Section ===== */
.scenarios-section {
  background: var(--primary-dark);
  color: #fff;
}
.scenario-list {
  display: flex;
  flex-direction: column;
  gap: 80px;
}
.scenario-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.scenario-row-reverse .scenario-media { order: 2; }
.scenario-row-reverse .scenario-content { order: 1; }
.scenario-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.12);
}
.scenario-media img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.scenario-media:hover img { transform: scale(1.03); }
.scenario-content { max-width: 440px; }
.scenario-num {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 600;
  color: var(--gold);
  display: block;
  margin-bottom: 12px;
}
.scenario-content h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 14px;
}
.scenario-content p {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255,255,255,0.7);
  margin-bottom: 20px;
}
.scenario-tags { display: flex; gap: 8px; flex-wrap: wrap; }

/* ===== Cases Section ===== */
.cases-scroll {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  overflow-x: auto;
  padding-bottom: 8px;
}
.case-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: var(--shadow);
  min-width: 0;
}
.case-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
  box-shadow: var(--shadow-hover);
}
.case-cover {
  height: 180px;
  overflow: hidden;
}
.case-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.case-card:hover .case-cover img { transform: scale(1.04); }
.case-body { padding: 24px; }
.case-body .badge { margin-bottom: 12px; }
.case-body h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.case-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.case-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
  padding: 32px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.metric-item {
  text-align: center;
  padding: 8px;
}
.metric-num {
  font-family: var(--font-num);
  font-size: 40px;
  font-weight: 600;
  color: var(--gold);
  line-height: 1.2;
  display: block;
  font-variant-numeric: tabular-nums;
}
.metric-label {
  font-size: 14px;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
}

/* ===== Pricing Section ===== */
.pricing-section { background: #fff; }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}
.pricing-card {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
}
.pricing-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.pricing-card-featured {
  background: #fff;
  border: 2px solid var(--gold);
  box-shadow: 0 8px 32px rgba(198,161,91,0.22);
  transform: scale(1.02);
}
.pricing-card-featured:hover { transform: scale(1.02) translateY(-4px); }
.pricing-card .badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #D3B072, #C6A15B);
  color: var(--primary);
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(198,161,91,0.3);
}
.pricing-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}
.price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.price-num {
  font-family: var(--font-num);
  font-size: 38px;
  font-weight: 600;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.price-unit {
  font-size: 14px;
  color: var(--text-weak);
}
.price-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
  flex: 1;
}
.price-list li {
  font-size: 14px;
  color: var(--text-secondary);
  padding-left: 28px;
  position: relative;
}
.price-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--gold);
  font-weight: 700;
}
.pricing-card .btn { width: 100%; }

/* ===== News Section ===== */
.news-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  max-width: 100%;
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: var(--shadow);
}
.news-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
  box-shadow: var(--shadow-hover);
}
.news-card:nth-child(2) { margin-top: 20px; }
.news-card:nth-child(3) { margin-top: 40px; }
.news-card:nth-child(4) { margin-top: 0; }
.news-link { display: block; height: 100%; }
.news-thumb {
  height: 160px;
  overflow: hidden;
  background: var(--primary);
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.news-card:hover .news-thumb img { transform: scale(1.04); }
.news-body { padding: 22px; }
.news-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.news-time {
  font-size: 13px;
  color: var(--text-weak);
}
.news-body h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-empty {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 72px 24px;
  text-align: center;
  background: #fff;
}
.empty-icon {
  font-size: 44px;
  margin-bottom: 16px;
  color: var(--gold);
}
.news-empty h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--text);
  margin-bottom: 8px;
}
.news-empty p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ===== FAQ Section ===== */
.faq-container {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 56px;
}
.faq-left .section-eyebrow { margin-bottom: 12px; }
.faq-left h2 {
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 14px;
}
.faq-left > p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}
.faq-contact-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.faq-contact-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.faq-contact-item:last-child { border-bottom: none; }
.contact-label {
  display: block;
  font-size: 12px;
  color: var(--text-weak);
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}
.contact-value {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
}
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s ease;
}
.faq-item.active {
  border-color: var(--gold);
  box-shadow: var(--shadow-hover);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: color 0.22s ease;
}
.faq-question:hover { color: var(--moss); }
.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(198,161,91,0.12);
  color: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 400;
  transition: transform 0.3s ease, background 0.3s ease;
  flex-shrink: 0;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--gold);
  color: #fff;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
  border-left: 2px solid transparent;
}
.faq-item.active .faq-answer { max-height: 400px; }
.faq-item.active .faq-answer-inner { border-left-color: var(--gold); }

/* ===== CTA Section ===== */
.cta-section {
  position: relative;
  background: var(--primary);
  padding: 120px 0;
  overflow: hidden;
}
.cta-watermark {
  position: absolute;
  top: 50%;
  right: -60px;
  transform: translateY(-50%);
  font-family: var(--font-serif);
  font-size: 320px;
  font-weight: 700;
  color: rgba(255,255,255,0.04);
  line-height: 1;
  pointer-events: none;
  user-select: none;
}
.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
}
.cta-inner h2 {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.cta-inner p {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 36px;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-dark);
  color: #fff;
  padding-top: 72px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 2fr;
  gap: 56px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .logo {
  margin-bottom: 16px;
}
.footer-brand .logo-mark {
  color: #fff;
}
.footer-brand .logo-text {
  color: rgba(255,255,255,0.6);
}
.footer-brand p {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  line-height: 1.8;
  max-width: 320px;
}
.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.08em;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col a {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  transition: color 0.22s ease;
}
.footer-col a:hover { color: var(--gold); }
.footer-bottom {
  padding: 24px 0;
}
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}
.footer-domain {
  font-family: var(--font-num);
  letter-spacing: 0.04em;
}

/* ===== Reveal Animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.revealed {
  opacity: 1;
  transform: none;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  :root { --section-space: 72px; }
  .platform-card-large { grid-column: span 7; }
  .platform-card-small { grid-column: span 5; }
  .platform-card-small:nth-child(3) { grid-column: span 12; }
  .scenario-row { gap: 32px; }
  .scenario-media img { height: 260px; }
  .pricing-grid { gap: 16px; }
  .pricing-card { padding: 28px 22px; }
}
@media (max-width: 768px) {
  .main-nav { display: none; }
  .header-cta { display: none; }
  .nav-toggle { display: flex; }
  .hero-title { font-size: 32px; }
  .hero-title-sub { font-size: 18px; }
  .hero-scroll { display: none; }
  .hero-stats-inner { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-item { padding-left: 16px; }
  .platform-grid { gap: 16px; }
  .platform-card-large { grid-column: span 12; }
  .platform-card-small { grid-column: span 6; }
  .platform-features { grid-template-columns: repeat(2, 1fr); }
  .feature-item:nth-child(3) { border-left: none; }
  .feature-item:nth-child(n+3) { border-top: 1px solid var(--border); }
  .scenario-row { grid-template-columns: 1fr; gap: 24px; }
  .scenario-row-reverse .scenario-media { order: 0; }
  .scenario-row-reverse .scenario-content { order: 0; }
  .scenario-content { max-width: 100%; }
  .scenario-media img { height: 220px; }
  .cases-scroll { grid-template-columns: repeat(3, 80%); }
  .case-card { min-width: 260px; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 440px; margin: 0 auto; }
  .pricing-card-featured { transform: none; }
  .pricing-card-featured:hover { transform: translateY(-4px); }
  .news-grid { grid-template-columns: 1fr; }
  .news-card:nth-child(2), .news-card:nth-child(3), .news-card:nth-child(4) { margin-top: 0; }
  .faq-container { grid-template-columns: 1fr; gap: 32px; }
  .footer-top { grid-template-columns: 1fr; gap: 40px; }
  .footer-nav { grid-template-columns: 1fr; gap: 24px; }
  .cta-watermark { font-size: 200px; }
}
@media (max-width: 640px) {
  :root { --section-space: 56px; }
  .container { padding-left: 16px; padding-right: 16px; }
  .section-head h2 { font-size: 22px; }
  .platform-features { grid-template-columns: 1fr; }
  .feature-item { border-left: none; border-top: 1px solid var(--border); }
  .feature-item:first-child { border-top: none; }
  .hero-title { font-size: 28px; }
  .hero-title-sub { font-size: 16px; }
  .hero-subtitle { font-size: 15px; }
  .hero-stats-inner { grid-template-columns: 1fr 1fr; padding-top: 20px; padding-bottom: 20px; }
  .stat-num { font-size: 22px; }
  .case-metrics { grid-template-columns: 1fr; gap: 16px; }
  .metric-num { font-size: 32px; }
  .cta-inner h2 { font-size: 24px; }
  .btn-lg { height: 46px; padding: 0 24px; font-size: 14px; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  .hero-eyebrow, .hero-title, .hero-subtitle, .hero-actions { opacity: 1; }
  .reveal { opacity: 1; transform: none; }
}

/* roulang page: category1 */
:root {
  --primary: #1E3A34;
  --primary-dark: #142824;
  --accent: #C6A15B;
  --accent-light: #D3B072;
  --secondary: #2F6B5C;
  --bg: #FAF8F4;
  --text: #171F1C;
  --text-secondary: #5B6A65;
  --text-muted: #8A9893;
  --text-on-dark: #EEF3F0;
  --text-on-dark-muted: #A7B5B0;
  --border: #E8E2D8;
  --border-dark: rgba(255,255,255,0.14);
  --radius-card: 14px;
  --radius-btn: 8px;
  --radius-pill: 999px;
  --shadow-card: 0 1px 2px rgba(23,31,28,0.04), 0 4px 12px rgba(23,31,28,0.05);
  --shadow-hover: 0 8px 28px rgba(23,31,28,0.10), 0 2px 6px rgba(198,161,91,0.12);
  --shadow-nav: 0 4px 20px rgba(23,31,28,0.06);
  --font-title: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.22s ease;
}

ul, ol {
  list-style: none;
}

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

/* 按钮体系 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.05em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.22s ease;
  line-height: 1;
  white-space: nowrap;
}
.btn:hover {
  transform: translateY(-1px);
}
.btn:active {
  transform: translateY(0);
  opacity: 0.88;
}
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(198,161,91,0.25);
}
.btn-primary {
  background: linear-gradient(135deg, #D3B072 0%, #C6A15B 100%);
  color: var(--primary);
  box-shadow: 0 4px 14px rgba(198,161,91,0.28);
}
.btn-primary:hover {
  filter: brightness(1.05);
}
.btn-outline {
  background: transparent;
  border-color: var(--accent);
  color: var(--accent);
}
.btn-outline:hover {
  background: rgba(198,161,91,0.10);
}
.btn-outline-light {
  background: transparent;
  border-color: rgba(255,255,255,0.7);
  color: #fff;
}
.btn-outline-light:hover {
  background: rgba(255,255,255,0.10);
}
.btn-sm {
  height: 38px;
  padding: 0 20px;
  font-size: 13px;
}

/* 导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(250,248,244,0.92);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-nav);
  height: 64px;
  transition: height 0.3s ease, box-shadow 0.3s ease;
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-mark {
  font-family: var(--font-title);
  font-size: 22px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.02em;
  position: relative;
}
.logo-dot {
  display: inline-block;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
  margin-left: 3px;
  vertical-align: super;
}
.logo-text {
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.3em;
  color: var(--text-secondary);
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  padding: 8px 2px;
  letter-spacing: 0.02em;
  transition: color 0.22s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: transform 0.3s ease;
}
.nav-link:hover {
  color: var(--secondary);
}
.nav-link:hover::after {
  transform: translateX(-50%) scaleX(1);
}
.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}
.nav-link.active::after {
  transform: translateX(-50%) scaleX(1);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-toggle:hover {
  background: rgba(198,161,91,0.12);
}
.nav-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.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);
}

/* 移动端抽屉 */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  max-width: 420px;
  height: 100vh;
  background: rgba(250,248,244,0.98);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  backdrop-filter: blur(18px) saturate(160%);
  z-index: 1200;
  transition: right 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
  padding: 96px 32px 40px;
  box-shadow: -8px 0 32px rgba(23,31,28,0.10);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.mobile-drawer.open {
  right: 0;
}
.mobile-drawer a {
  font-size: 17px;
  font-weight: 500;
  color: var(--text);
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s ease, padding-left 0.2s ease;
}
.mobile-drawer a:hover {
  color: var(--secondary);
  padding-left: 6px;
}
.mobile-drawer a.active {
  color: var(--primary);
  font-weight: 600;
}
.mobile-drawer .btn {
  margin-top: 24px;
}
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(20,40,36,0.4);
  z-index: 1100;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.drawer-backdrop.open {
  opacity: 1;
  visibility: visible;
}
.drawer-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  font-size: 24px;
  color: var(--text);
  cursor: pointer;
  border-radius: 8px;
  line-height: 1;
}
.drawer-close:hover {
  background: rgba(198,161,91,0.12);
}

/* 页面小 Hero */
.page-hero {
  position: relative;
  min-height: 280px;
  display: flex;
  align-items: center;
  background: linear-gradient(100deg, rgba(20,40,36,0.85) 0%, rgba(20,40,36,0.65) 100%), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  padding: 60px 0;
}
.page-hero .container {
  position: relative;
  z-index: 1;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 16px;
}
.breadcrumb a {
  color: rgba(255,255,255,0.8);
  transition: color 0.2s ease;
}
.breadcrumb a:hover {
  color: var(--accent-light);
}
.breadcrumb .sep {
  color: rgba(255,255,255,0.35);
}
.breadcrumb .current {
  color: rgba(255,255,255,0.75);
  font-weight: 500;
}
.page-hero h1 {
  font-family: var(--font-title);
  font-size: 36px;
  font-weight: 600;
  color: #fff;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}
.page-hero .hero-sub {
  font-size: 15px;
  color: rgba(255,255,255,0.75);
  max-width: 480px;
  line-height: 1.7;
}

/* 主内容区 */
.content-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 56px;
  padding-top: 80px;
  padding-bottom: 80px;
  align-items: start;
}
.content-main {
  min-width: 0;
}

/* 目录卡 */
.directory {
  position: sticky;
  top: 96px;
}
.directory-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.3s ease;
}
.directory-card:hover {
  box-shadow: var(--shadow-hover);
}
.directory-card h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.1em;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}
.directory-card ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.directory-card ul li a {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  padding: 10px 14px;
  border-radius: 8px;
  border-left: 2px solid transparent;
  transition: all 0.22s ease;
}
.directory-card ul li a:hover {
  color: var(--primary);
  background: rgba(198,161,91,0.08);
  border-left-color: var(--accent);
}
.directory-card ul li a.active {
  color: var(--primary);
  font-weight: 600;
  background: rgba(198,161,91,0.08);
  border-left-color: var(--accent);
}
.directory-help {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  background: var(--bg);
  border-radius: 10px;
  padding: 16px;
}
.directory-help p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.directory-help a {
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s ease, gap 0.2s ease;
}
.directory-help a:hover {
  color: var(--accent);
  gap: 10px;
}

/* 指南小节 */
.guide-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding-top: 24px;
}
.guide-section + .guide-section {
  margin-top: 80px;
  border-top: 1px solid var(--border);
  padding-top: 72px;
}
.section-media {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  position: relative;
}
.section-media img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  border-radius: var(--radius-card);
  transition: transform 0.6s ease;
}
.guide-section:hover .section-media img {
  transform: scale(1.04);
}
.section-body .section-tag {
  display: inline-flex;
  align-items: center;
  background: #EFEBE3;
  color: var(--primary);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}
.section-body h2 {
  font-family: var(--font-title);
  font-size: 24px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 16px;
}
.section-body > p {
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-secondary);
  margin-bottom: 20px;
}
.notice-box {
  background: #F0ECE3;
  border-left: 4px solid var(--accent);
  border-radius: 0 10px 10px 0;
  padding: 16px 20px;
  margin-top: 20px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* 步骤列表 */
.step-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 8px;
}
.step-item {
  display: flex;
  gap: 18px;
  position: relative;
  padding-bottom: 28px;
}
.step-item:last-child {
  padding-bottom: 0;
}
.step-item::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 46px;
  bottom: 6px;
  width: 1px;
  background: var(--border);
}
.step-item:last-child::before {
  display: none;
}
.step-num {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(30,58,52,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-title);
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  border: 1px solid rgba(198,161,91,0.35);
}
.step-content h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
  line-height: 1.5;
}
.step-content p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 功能标签 */
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.tag-row .tag {
  display: inline-flex;
  align-items: center;
  background: #EFEBE3;
  color: var(--primary);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  transition: background 0.22s ease, color 0.22s ease;
}
.tag-row .tag:hover {
  background: var(--primary);
  color: var(--accent-light);
}

/* CTA 窄横幅 */
.cta-strip {
  background: var(--primary);
  padding: 48px 0;
  position: relative;
  overflow: hidden;
}
.cta-strip::after {
  content: "华体";
  position: absolute;
  right: -20px;
  bottom: -36px;
  font-family: var(--font-title);
  font-size: 160px;
  font-weight: 700;
  color: rgba(198,161,91,0.08);
  line-height: 1;
  pointer-events: none;
}
.cta-strip .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  position: relative;
  z-index: 1;
  flex-wrap: wrap;
}
.cta-strip h2 {
  font-family: var(--font-title);
  font-size: 22px;
  font-weight: 600;
  color: #fff;
  line-height: 1.4;
  margin-bottom: 6px;
}
.cta-strip p {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  line-height: 1.7;
}
.cta-strip .btn {
  flex-shrink: 0;
}

/* 页脚 */
.site-footer {
  background: var(--primary-dark);
  color: var(--text-on-dark);
  padding-top: 64px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 2fr;
  gap: 60px;
  padding-bottom: 48px;
}
.footer-brand .logo-mark {
  color: #fff;
}
.footer-brand .logo-text {
  color: var(--text-on-dark-muted);
}
.footer-brand p {
  font-size: 13px;
  color: var(--text-on-dark-muted);
  line-height: 1.8;
  margin-top: 18px;
  max-width: 340px;
}
.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.08em;
  margin-bottom: 18px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  font-size: 13px;
  color: var(--text-on-dark-muted);
  transition: color 0.2s ease;
}
.footer-col ul li a:hover {
  color: var(--accent-light);
}
.footer-bottom {
  border-top: 1px solid var(--border-dark);
  padding: 20px 0;
}
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-on-dark-muted);
  flex-wrap: wrap;
  gap: 8px;
}
.footer-domain {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.4);
}

/* 动画 */
.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 响应式 */
@media (max-width: 1024px) {
  .content-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-top: 56px;
    padding-bottom: 56px;
  }
  .directory {
    position: static;
    order: -1;
  }
  .directory-card {
    max-width: none;
  }
  .guide-section {
    gap: 32px;
  }
  .section-media img {
    height: 220px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .page-hero h1 {
    font-size: 32px;
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
  }
  .nav-actions .btn {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }
  .guide-section {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .guide-section + .guide-section {
    margin-top: 56px;
    padding-top: 48px;
  }
  .cta-strip {
    padding: 40px 0;
  }
  .cta-strip .container {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-nav {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .page-hero {
    min-height: 240px;
    padding: 48px 0;
  }
  .page-hero h1 {
    font-size: 28px;
  }
  .section-media img {
    height: 200px;
  }
}

@media (max-width: 520px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .footer-nav {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-top {
    gap: 32px;
    padding-bottom: 32px;
  }
  .site-footer {
    padding-top: 48px;
  }
  .page-hero h1 {
    font-size: 24px;
  }
  .page-hero .hero-sub {
    font-size: 14px;
  }
  .section-body h2 {
    font-size: 20px;
  }
  .cta-strip h2 {
    font-size: 18px;
  }
  .cta-strip .btn {
    width: 100%;
  }
  .step-item {
    gap: 14px;
  }
  .step-num {
    width: 36px;
    height: 36px;
    font-size: 14px;
  }
  .step-item::before {
    left: 17px;
  }
}

/* 减少动态效果 */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .fade-up {
    opacity: 1;
    transform: none;
  }
  .section-media img {
    transform: none !important;
  }
}

/* roulang page: article */
:root {
  --primary: #1E3A34;
  --primary-dark: #142824;
  --accent: #C6A15B;
  --accent-light: #D3B072;
  --secondary: #2F6B5C;
  --bg: #FAF8F4;
  --text: #171F1C;
  --text-secondary: #5B6A65;
  --text-weak: #8A9893;
  --text-on-dark: #EEF3F0;
  --text-on-dark-weak: #A7B5B0;
  --border: #E8E2D8;
  --border-dark: rgba(255,255,255,0.14);
  --radius: 14px;
  --radius-lg: 20px;
  --radius-btn: 8px;
  --shadow-card: 0 1px 2px rgba(23,31,28,0.04), 0 4px 12px rgba(23,31,28,0.05);
  --shadow-hover: 0 8px 28px rgba(23,31,28,0.10), 0 2px 6px rgba(198,161,91,0.12);
  --shadow-nav: 0 4px 20px rgba(23,31,28,0.06);
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

button {
  border: 0;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

ul,
ol {
  list-style: none;
}

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

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

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  height: 64px;
  background: rgba(250, 248, 244, 0.92);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}

.site-header.scrolled {
  box-shadow: var(--shadow-nav);
  background: rgba(250, 248, 244, 0.96);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  height: 64px;
}

.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  flex-shrink: 0;
}

.logo-mark {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--primary);
  line-height: 1.2;
}

.logo-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-left: 3px;
}

.logo-text {
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--text-secondary);
  white-space: nowrap;
}

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

.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  padding: 8px 0;
  transition: color 0.22s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.22s ease;
}

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

.nav-link:hover::after {
  width: 20px;
}

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

.nav-link.active::after {
  width: 20px;
}

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

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

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: transparent;
  border: 1px solid var(--border);
  transition: background 0.22s ease;
}

.nav-toggle:hover {
  background: rgba(198, 161, 91, 0.08);
}

.nav-toggle .bar {
  width: 18px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle[aria-expanded="true"] .bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  top: 64px;
  right: 0;
  bottom: 0;
  width: min(320px, 85vw);
  background: rgba(250, 248, 244, 0.98);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: -8px 0 32px rgba(23, 31, 28, 0.08);
  padding: 32px 24px;
  z-index: 99;
  visibility: hidden;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.22, 0.61, 0.36, 1), visibility 0.4s;
  border-left: 1px solid var(--border);
  overflow-y: auto;
}

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

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.mobile-menu .nav-link {
  font-size: 16px;
  padding: 12px 12px;
  border-radius: 8px;
}

.mobile-menu .nav-link:hover {
  background: rgba(47, 107, 92, 0.06);
}

@media (min-width: 769px) {
  .mobile-menu {
    display: none;
  }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: all 0.22s ease;
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, #D3B072 0%, #C6A15B 100%);
  color: var(--primary);
  box-shadow: 0 4px 14px rgba(198, 161, 91, 0.28);
}

.btn-primary:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(198, 161, 91, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
  filter: brightness(0.98);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-sm {
  height: 38px;
  padding: 0 20px;
  font-size: 13px;
}

.btn-block {
  width: 100%;
}

/* ===== Article Header ===== */
.article-header {
  padding: 48px 0 44px;
  background:
    radial-gradient(circle at 85% 20%, rgba(198, 161, 91, 0.08), transparent 40%),
    linear-gradient(180deg, #F0ECE3 0%, rgba(250, 248, 244, 0.6) 60%, rgba(250, 248, 244, 0) 100%);
  border-bottom: 1px solid var(--border);
}

.breadcrumb {
  margin-bottom: 24px;
}

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

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb li + li::before {
  content: '/';
  color: var(--border);
}

.breadcrumb a {
  color: var(--text-secondary);
  transition: color 0.22s ease;
}

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

.breadcrumb li[aria-current="page"] {
  color: var(--text-weak);
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-header h1 {
  font-family: var(--font-serif);
  font-size: 34px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--primary);
  max-width: 800px;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  font-size: 13px;
  color: var(--text-weak);
}

.meta-sep {
  color: var(--border);
}

.meta-category {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 12px;
  border-radius: 999px;
  background: #EFEBE3;
  color: var(--primary);
  font-size: 12px;
  letter-spacing: 0.1em;
}

/* ===== Article Layout ===== */
.article-wrap {
  padding: 56px 0 80px;
}

.article-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.article-toc {
  position: sticky;
  top: 88px;
  align-self: start;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

.toc-inner h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.toc-list li {
  margin-bottom: 2px;
}

.toc-item {
  display: block;
  padding: 8px 12px;
  border-radius: 8px;
  border-left: 2px solid transparent;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-secondary);
  transition: all 0.22s ease;
}

.toc-item:hover {
  background: rgba(47, 107, 92, 0.06);
  color: var(--secondary);
}

.toc-item.active {
  color: var(--primary);
  font-weight: 600;
  background: rgba(30, 58, 52, 0.04);
  border-left-color: var(--accent);
}

.toc-level-h3 {
  padding-left: 24px;
  font-size: 12px;
}

.article-main {
  min-width: 0;
}

.article-body-inner {
  max-width: 720px;
}

/* ===== Article Content ===== */
.article-content {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
}

.article-content > *:first-child {
  margin-top: 0;
}

.article-content p {
  margin: 0 0 1.6em;
  text-align: justify;
}

.article-content h2 {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--primary);
  margin: 48px 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.article-content h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  margin: 32px 0 12px;
  color: var(--text);
}

.article-content h4 {
  font-size: 16px;
  font-weight: 600;
  margin: 24px 0 10px;
  color: var(--text);
}

.article-content [id] {
  scroll-margin-top: 88px;
}

.article-content a {
  color: var(--secondary);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-style: dashed;
  text-decoration-color: rgba(47, 107, 92, 0.4);
  transition: color 0.2s ease;
}

.article-content a:hover {
  color: var(--primary);
}

.article-content img {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin: 24px 0;
}

.article-content figure {
  margin: 24px 0;
}

.article-content figcaption {
  font-size: 13px;
  text-align: center;
  color: var(--text-weak);
  margin-top: 10px;
  line-height: 1.6;
}

.article-content blockquote {
  margin: 24px 0;
  padding: 20px 24px;
  background: #F0ECE3;
  border-left: 4px solid var(--accent);
  border-radius: 0 10px 10px 0;
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.7;
  color: var(--primary);
}

.article-content ul,
.article-content ol {
  margin: 0 0 1.6em;
  padding-left: 1.4em;
}

.article-content li {
  margin-bottom: 0.5em;
}

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

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

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}

.article-content th {
  background: rgba(30, 58, 52, 0.05);
  font-weight: 600;
  text-align: left;
  color: var(--primary);
}

.article-content th,
.article-content td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}

.article-content pre {
  background: var(--primary-dark);
  color: var(--text-on-dark);
  border-radius: 10px;
  padding: 20px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.6;
  margin: 24px 0;
}

.article-content code {
  font-family: Consolas, Menlo, Monaco, monospace;
}

.article-content pre code {
  background: none;
  color: inherit;
  padding: 0;
}

/* ===== Tags ===== */
.article-tags {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.tag-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
}

.tag {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 12px;
  border-radius: 999px;
  background: #EFEBE3;
  color: var(--primary);
  font-size: 12px;
  letter-spacing: 0.1em;
  transition: all 0.22s ease;
  border: 1px solid transparent;
}

.tag:hover {
  background: rgba(198, 161, 91, 0.15);
  border-color: var(--accent);
  color: var(--primary);
}

/* ===== Post Nav ===== */
.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
}

.post-nav-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 24px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.22s ease;
  box-shadow: var(--shadow-card);
}

.post-nav-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.post-nav-card.next {
  text-align: right;
}

.nav-direction {
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.05em;
}

.nav-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
}

/* ===== Related ===== */
.related-section {
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

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

.related-head h2 {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
  color: var(--primary);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  color: var(--secondary);
  font-weight: 500;
  transition: all 0.22s ease;
}

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

.text-link .arrow {
  transition: transform 0.22s ease;
}

.text-link:hover .arrow {
  transform: translateX(4px);
}

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

.related-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all 0.22s ease;
  display: block;
}

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

.related-thumb {
  height: 140px;
  overflow: hidden;
  background: var(--primary);
  position: relative;
}

.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.related-card:hover .related-thumb img {
  transform: scale(1.04);
}

.related-body {
  padding: 20px;
}

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

.related-body h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 8px 0;
  line-height: 1.5;
  color: var(--text);
  transition: color 0.2s ease;
}

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

.related-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== Back Link ===== */
.back-link {
  margin-top: 40px;
}

/* ===== Empty State ===== */
.article-empty {
  max-width: 560px;
  margin: 80px auto;
  text-align: center;
  background: #fff;
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 64px 40px;
  box-shadow: var(--shadow-card);
}

.empty-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(198, 161, 91, 0.12);
}

.empty-icon svg {
  width: 36px;
  height: 36px;
  stroke: var(--accent);
}

.article-empty h2 {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--primary);
  margin-bottom: 12px;
}

.article-empty p {
  color: var(--text-secondary);
  margin-bottom: 28px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-dark);
  color: var(--text-on-dark);
  padding-top: 64px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 2fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand .logo-mark {
  color: #fff;
}

.footer-brand .logo-text {
  color: var(--text-on-dark-weak);
}

.footer-brand p {
  margin-top: 16px;
  font-size: 14px;
  color: var(--text-on-dark-weak);
  line-height: 1.7;
  max-width: 320px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-col h4 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-on-dark);
  margin-bottom: 16px;
}

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

.footer-col a {
  font-size: 14px;
  color: var(--text-on-dark-weak);
  transition: color 0.22s ease;
}

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

.footer-bottom {
  border-top: 1px solid var(--border-dark);
  padding: 20px 0;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 13px;
  color: var(--text-on-dark-weak);
}

.footer-domain {
  color: var(--accent);
  letter-spacing: 0.08em;
}

/* ===== Reveal Animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-toc {
    display: none;
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
  }
  .nav-cta {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .header-inner,
  .site-header {
    height: 60px;
  }
  .mobile-menu {
    top: 60px;
  }
  .article-header h1 {
    font-size: 24px;
  }
  .article-wrap {
    padding: 32px 0 56px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-nav {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .article-header {
    padding: 36px 0 32px;
  }
  .article-header h1 {
    font-size: 22px;
    line-height: 1.4;
  }
  .breadcrumb ol {
    gap: 6px;
    font-size: 12px;
  }
  .article-meta {
    gap: 8px 10px;
    font-size: 12px;
  }
  .post-nav {
    grid-template-columns: 1fr;
  }
  .post-nav-card.next {
    text-align: left;
  }
  .related-body {
    padding: 16px;
  }
  .article-empty {
    margin: 48px 0;
    padding: 48px 24px;
  }
  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
  }
  .footer-nav {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

@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;
  }
}

/* roulang page: category2 */
:root {
  --color-primary: #1E3A34;
  --color-primary-light: #2F6B5C;
  --color-gold: #C6A15B;
  --color-gold-light: #D3B072;
  --color-bg: #FAF8F4;
  --color-ink: #171F1C;
  --color-text-secondary: #5B6A65;
  --color-text-muted: #8A9893;
  --color-dark: #142824;
  --color-dark-2: #1E3A34;
  --color-dark-text: #EEF3F0;
  --color-dark-muted: #A7B5B0;
  --border-light: #E8E2D8;
  --border-dark: rgba(255,255,255,0.14);
  --radius-card: 14px;
  --radius-btn: 8px;
  --radius-large: 20px;
  --shadow-card: 0 1px 2px rgba(23,31,28,0.04), 0 4px 12px rgba(23,31,28,0.05);
  --shadow-hover: 0 8px 28px rgba(23,31,28,0.10), 0 2px 6px rgba(198,161,91,0.12);
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-num: "Inter", "DIN Alternate", Arial, sans-serif;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  transition: background-color .3s ease;
}

body.page-service-support {
  background: var(--color-dark);
  color: var(--color-dark-text);
}

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

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

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

ul, ol {
  list-style: none;
}

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

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all .22s ease;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #D3B072 0%, #C6A15B 100%);
  color: #1E3A34;
  box-shadow: 0 4px 14px rgba(198,161,91,0.28);
}

.btn-primary:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(198,161,91,0.36);
}

.btn-primary:active {
  transform: translateY(0);
  opacity: .92;
}

.btn-primary:focus-visible {
  outline: 2px solid var(--color-gold-light);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(30,58,52,.35);
}

.btn-ghost-light {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.5);
  color: #fff;
}

.btn-ghost-light:hover {
  background: rgba(255,255,255,0.10);
  border-color: #fff;
  transform: translateY(-1px);
}

.btn-ghost-light:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.btn-outline-gold {
  background: transparent;
  border: 1px solid rgba(198,161,91,0.55);
  color: var(--color-gold-light);
}

.btn-outline-gold:hover {
  background: rgba(198,161,91,0.12);
  border-color: var(--color-gold-light);
  transform: translateY(-1px);
}

.btn-outline-gold:focus-visible {
  outline: 2px solid var(--color-gold-light);
  outline-offset: 2px;
}

.btn-sm {
  height: 38px;
  padding: 0 20px;
  font-size: 13px;
}

.btn-block {
  display: flex;
  width: 100%;
  margin-top: 16px;
}

/* ---------- 徽章 ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: .06em;
  background: rgba(198,161,91,0.16);
  color: var(--color-gold-light);
  border: 1px solid rgba(198,161,91,0.3);
  white-space: nowrap;
}

/* ---------- 导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 72px;
  transition: height .3s ease, box-shadow .3s ease, background-color .3s ease;
}

.site-header.is-solid {
  background: rgba(20,40,36,0.96);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid rgba(198,161,91,0.18);
  box-shadow: 0 4px 20px rgba(23,31,28,0.20);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 16px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.logo-mark {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
  color: #fff;
  line-height: 1;
  display: inline-flex;
  align-items: center;
}

.logo-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-gold);
  display: inline-block;
  margin-left: 3px;
}

.logo-text {
  font-size: 12px;
  letter-spacing: .28em;
  color: rgba(238,243,240,0.72);
  padding-left: 12px;
  margin-left: 2px;
  border-left: 1px solid rgba(255,255,255,0.2);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: rgba(238,243,240,0.82);
  padding: 8px 2px;
  transition: color .22s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--color-gold);
  border-radius: 2px;
  transition: width .3s cubic-bezier(.22,.61,.36,1);
}

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

.nav-link:hover::after {
  width: 20px;
}

.nav-link.active {
  color: #fff;
}

.nav-link.active::after {
  width: 100%;
}

.nav-link:focus-visible {
  outline: 2px solid var(--color-gold-light);
  outline-offset: 4px;
  border-radius: 4px;
}

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

.header-cta {
  display: inline-flex;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255,255,255,0.22);
  border-radius: 8px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: transparent;
  transition: border-color .22s ease, background .22s ease;
}

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

.nav-toggle:focus-visible {
  outline: 2px solid var(--color-gold-light);
  outline-offset: 2px;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform .3s ease, opacity .3s 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);
}

.mobile-drawer {
  display: none;
}

/* ---------- Hero ---------- */
.support-hero {
  position: relative;
  padding: 88px 0 0;
  background: linear-gradient(120deg, #142824 0%, #1E3A34 62%, #245148 100%);
  overflow: hidden;
}

.support-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 78% 24%, rgba(198,161,91,0.10), transparent 42%),
    linear-gradient(rgba(198,161,91,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(198,161,91,0.05) 1px, transparent 1px);
  background-size: 100% 100%, 56px 56px, 56px 56px;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, black 65%);
  mask-image: linear-gradient(90deg, transparent 0%, black 65%);
  pointer-events: none;
}

.support-hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 1200px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(198,161,91,0.5), transparent);
}

.support-hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 48px;
  align-items: center;
  min-height: 460px;
  padding-bottom: 72px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(238,243,240,0.55);
  margin-bottom: 20px;
}

.breadcrumb a {
  color: rgba(238,243,240,0.55);
  transition: color .22s;
}

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

.breadcrumb .sep {
  color: rgba(198,161,91,0.6);
}

.breadcrumb [aria-current="page"] {
  color: rgba(238,243,240,0.88);
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--color-gold);
  font-weight: 500;
  text-transform: uppercase;
}

.section-eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--color-gold);
}

.support-hero-content h1 {
  font-family: var(--font-serif);
  font-size: 44px;
  font-weight: 600;
  line-height: 1.28;
  color: #fff;
  margin: 18px 0 14px;
  letter-spacing: -0.01em;
}

.support-hero-desc {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(238,243,240,0.75);
  max-width: 480px;
  margin-bottom: 28px;
}

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

.support-hero-seal {
  display: flex;
  justify-content: center;
  align-items: center;
}

.seal {
  position: relative;
  width: 260px;
  height: 260px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, rgba(198,161,91,0.16), transparent 65%);
  animation: sealFloat 6s ease-in-out infinite;
}

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

.seal-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(198,161,91,0.65);
}

.seal-ring::before {
  content: '';
  position: absolute;
  inset: 14px;
  border-radius: 50%;
  border: 1px dashed rgba(198,161,91,0.45);
}

.seal-ring::after {
  content: '';
  position: absolute;
  inset: 28px;
  border-radius: 50%;
  border: 1px solid rgba(198,161,91,0.25);
}

.seal-brand {
  font-family: var(--font-serif);
  font-size: 44px;
  font-weight: 600;
  color: var(--color-gold-light);
  letter-spacing: .14em;
  line-height: 1.15;
  margin-bottom: 6px;
  text-indent: .14em;
}

.seal-sub {
  font-size: 13px;
  letter-spacing: .3em;
  color: rgba(238,243,240,0.6);
  text-indent: .3em;
}

/* 指标条 */
.support-metrics {
  position: relative;
  z-index: 2;
  border-top: 1px solid rgba(255,255,255,0.08);
  background: rgba(20,40,36,0.5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.support-metrics-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.metric-item {
  padding: 26px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 2px;
  border-left: 1px solid rgba(255,255,255,0.08);
}

.metric-item:first-child {
  border-left: none;
}

.metric-top {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.metric-num {
  font-family: var(--font-num);
  font-size: 32px;
  font-weight: 600;
  color: var(--color-gold);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.metric-unit {
  font-size: 14px;
  color: rgba(238,243,240,0.7);
}

.metric-label {
  font-size: 13px;
  color: rgba(238,243,240,0.5);
  letter-spacing: .06em;
}

/* ---------- 服务保障 ---------- */
.support-features {
  padding: 96px 0 0;
}

.section-head {
  margin-bottom: 40px;
}

.section-head h2 {
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 600;
  color: #fff;
  margin-top: 14px;
  letter-spacing: -0.01em;
}

.section-head p {
  font-size: 14px;
  color: var(--color-dark-muted);
  margin-top: 8px;
  max-width: 480px;
}

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

.feature-card {
  background: rgba(255,255,255,0.045);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  transition: background .3s ease, border-color .3s ease, transform .3s ease, box-shadow .3s ease;
}

.feature-card:hover {
  background: rgba(255,255,255,0.075);
  border-color: rgba(198,161,91,0.4);
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(23,31,28,0.22);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(198,161,91,0.16);
  color: var(--color-gold-light);
  font-size: 17px;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(238,243,240,0.62);
}

/* ---------- 常见问题 + 服务流程 ---------- */
.support-core {
  padding: 96px 0;
}

.core-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.core-grid h2 {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}

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

.faq-item {
  background: rgba(255,255,255,0.035);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color .3s ease, background .3s ease;
}

.faq-item.open {
  border-color: rgba(198,161,91,0.4);
  background: rgba(255,255,255,0.06);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  background: transparent;
  color: #fff;
  font-size: 15px;
  font-weight: 500;
  text-align: left;
  transition: color .22s ease;
}

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

.faq-question:focus-visible {
  outline: 2px solid var(--color-gold-light);
  outline-offset: -2px;
  border-radius: 10px;
}

.faq-icon {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  border-radius: 8px;
  background: rgba(198,161,91,0.15);
  color: var(--color-gold-light);
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.faq-arrow {
  margin-left: auto;
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.22);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: rgba(238,243,240,0.7);
  transition: transform .3s ease, color .3s ease, border-color .3s ease;
}

.faq-item.open .faq-arrow {
  transform: rotate(45deg);
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s cubic-bezier(.22,.61,.36,1);
}

.faq-answer p {
  padding: 0 18px 18px 62px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(238,243,240,0.62);
}

.process-steps {
  position: relative;
}

.process-steps li {
  position: relative;
  padding: 0 0 30px;
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 16px;
}

.process-steps li:last-child {
  padding-bottom: 0;
}

.process-steps li::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 48px;
  bottom: -2px;
  width: 1px;
  border-left: 1px dashed rgba(198,161,91,0.32);
}

.process-steps li:last-child::before {
  display: none;
}

.step-num {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--color-gold);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(198,161,91,0.08);
  border: 1px solid rgba(198,161,91,0.28);
}

.step-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 4px;
}

.step-body p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(238,243,240,0.6);
}

/* ---------- 资源下载 ---------- */
.resource-section {
  padding: 0 0 96px;
}

.resource-intro {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 40px;
}

.resource-intro-img img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius-card);
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 8px 28px rgba(23,31,28,0.25);
}

.resource-intro-text h2 {
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 600;
  color: #fff;
  margin-top: 14px;
  letter-spacing: -0.01em;
}

.resource-intro-text p {
  font-size: 14px;
  color: var(--color-dark-muted);
  margin-top: 10px;
  max-width: 440px;
  line-height: 1.8;
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.resource-card {
  background: rgba(255,255,255,0.045);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color .3s ease, transform .3s ease, box-shadow .3s ease, background .3s ease;
}

.resource-card:hover {
  border-color: rgba(198,161,91,0.4);
  background: rgba(255,255,255,0.07);
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(23,31,28,0.22);
}

.resource-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.resource-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
}

.resource-desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(238,243,240,0.62);
  flex: 1;
}

.resource-meta {
  font-size: 13px;
  color: rgba(238,243,240,0.4);
}

.btn-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 38px;
  padding: 0 18px;
  border-radius: var(--radius-btn);
  border: 1px solid rgba(198,161,91,0.5);
  color: var(--color-gold-light);
  font-size: 13px;
  font-weight: 500;
  background: transparent;
  transition: background .22s ease, border-color .22s ease, transform .22s ease;
  align-self: flex-start;
  margin-top: 6px;
}

.btn-download:hover {
  background: rgba(198,161,91,0.12);
  border-color: var(--color-gold-light);
  transform: translateY(-1px);
}

.btn-download:focus-visible {
  outline: 2px solid var(--color-gold-light);
  outline-offset: 2px;
}

/* ---------- 联系卡片 ---------- */
.contact-section {
  padding: 0 0 96px;
}

.contact-card {
  position: relative;
  background: linear-gradient(135deg, #1E3A34 0%, #245148 100%);
  border: 1px solid rgba(198,161,91,0.25);
  border-radius: var(--radius-large);
  padding: 48px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 40px;
  box-shadow: 0 8px 32px rgba(198,161,91,0.12);
  overflow: hidden;
}

.contact-card::before {
  content: '华体';
  position: absolute;
  right: 20px;
  bottom: -24px;
  font-family: var(--font-serif);
  font-size: 150px;
  font-weight: 600;
  color: rgba(198,161,91,0.05);
  pointer-events: none;
  line-height: 1;
  user-select: none;
}

.contact-title {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 28px;
  letter-spacing: -0.01em;
  position: relative;
  z-index: 1;
}

.contact-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
  z-index: 1;
}

.contact-item {
  padding-right: 24px;
  border-right: 1px solid rgba(255,255,255,0.12);
}

.contact-item:last-child {
  border-right: none;
  padding-right: 0;
}

.contact-item-label {
  font-size: 13px;
  color: var(--color-gold-light);
  letter-spacing: .08em;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.contact-item-value {
  font-size: 17px;
  font-weight: 500;
  color: #fff;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  line-height: 1.4;
}

.contact-item-sub {
  font-size: 13px;
  color: rgba(238,243,240,0.5);
  margin-top: 4px;
  font-family: var(--font-sans);
}

.contact-cta {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  flex-shrink: 0;
  padding-left: 44px;
  border-left: 1px solid rgba(255,255,255,0.12);
  position: relative;
  z-index: 1;
}

.contact-cta .btn-primary {
  min-width: 180px;
}

.contact-note {
  font-size: 13px;
  color: rgba(238,243,240,0.48);
  text-align: center;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: #142824;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 64px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 48px;
  padding-bottom: 40px;
}

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

.footer-brand p {
  font-size: 14px;
  color: rgba(238,243,240,0.56);
  margin-top: 16px;
  max-width: 320px;
  line-height: 1.75;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-col h4 {
  font-size: 13px;
  font-weight: 500;
  color: rgba(238,243,240,0.4);
  letter-spacing: .1em;
  margin-bottom: 16px;
}

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

.footer-col ul a {
  font-size: 14px;
  color: rgba(238,243,240,0.75);
  transition: color .22s ease, padding-left .22s ease;
}

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

.footer-col ul a:focus-visible {
  outline: 2px solid var(--color-gold-light);
  outline-offset: 2px;
  border-radius: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: rgba(238,243,240,0.4);
}

.footer-domain {
  font-family: var(--font-num);
  letter-spacing: .05em;
  color: rgba(238,243,240,0.28);
}

/* ---------- 滚动渐入 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .7s cubic-bezier(.22,.61,.36,1), transform .7s cubic-bezier(.22,.61,.36,1);
  will-change: opacity, transform;
}

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

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .support-hero-inner {
    grid-template-columns: 1.2fr 0.9fr;
    gap: 32px;
  }

  .seal {
    width: 210px;
    height: 210px;
  }

  .seal-brand {
    font-size: 36px;
  }

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

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

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

  .resource-card:last-child {
    grid-column: 1 / -1;
  }

  .contact-card {
    grid-template-columns: 1fr;
    padding: 40px 32px;
  }

  .contact-cta {
    padding-left: 0;
    border-left: none;
    border-top: 1px solid rgba(255,255,255,0.12);
    padding-top: 28px;
    flex-direction: row;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
  }

  .contact-cta .btn-primary {
    min-width: 200px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }

  .header-inner {
    padding: 0 20px;
    height: 64px;
  }

  .site-header,
  .site-header.is-solid {
    height: 64px;
  }

  .main-nav {
    display: none;
  }

  .header-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .mobile-drawer {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 99;
    background: rgba(20,40,36,0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 32px 24px;
    display: block;
    opacity: 0;
    visibility: hidden;
    transform: translateX(24px);
    transition: opacity .3s ease, transform .3s ease, visibility .3s;
  }

  .mobile-drawer.open {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  .mobile-nav-link {
    padding: 15px 8px;
    font-size: 17px;
    font-weight: 500;
    color: rgba(238,243,240,0.82);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    transition: color .22s ease, border-color .22s ease;
  }

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

  .mobile-nav-link.active {
    color: var(--color-gold-light);
    border-bottom-color: rgba(198,161,91,0.3);
  }

  .support-hero {
    padding: 64px 0 0;
  }

  .support-hero-inner {
    grid-template-columns: 1fr;
    min-height: 0;
    padding-bottom: 56px;
    text-align: center;
  }

  .support-hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .support-hero-content .breadcrumb {
    justify-content: center;
  }

  .support-hero-desc {
    margin-bottom: 24px;
  }

  .support-hero-actions {
    justify-content: center;
  }

  .support-hero-seal {
    display: none;
  }

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

  .metric-item {
    padding: 20px 12px;
  }

  .metric-item:nth-child(3) {
    border-left: none;
    border-top: 1px solid rgba(255,255,255,0.08);
  }

  .metric-item:nth-child(4) {
    border-top: 1px solid rgba(255,255,255,0.08);
  }

  .support-features,
  .support-core,
  .resource-section,
  .contact-section {
    padding-bottom: 56px;
  }

  .support-features {
    padding-top: 72px;
  }

  .support-core {
    padding-top: 72px;
  }

  .feature-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .feature-card {
    padding: 22px 18px;
  }

  .resource-intro {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .resource-intro-img img {
    height: 180px;
  }

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

  .resource-card:last-child {
    grid-column: auto;
  }

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

  .contact-title {
    font-size: 22px;
    margin-bottom: 20px;
  }

  .contact-info-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .contact-item {
    border-right: none;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }

  .contact-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }

  .contact-cta {
    flex-direction: column;
    gap: 12px;
  }

  .contact-cta .btn-primary {
    width: 100%;
    max-width: 260px;
  }

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

  .footer-nav {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .footer-bottom-inner {
    flex-direction: column;
    gap: 6px;
    text-align: center;
  }
}

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

  .header-inner {
    padding: 0 16px;
  }

  .logo-text {
    display: none;
  }

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

  .support-hero-desc {
    font-size: 15px;
  }

  .section-head h2,
  .resource-intro-text h2 {
    font-size: 24px;
  }

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

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

  .metric-num {
    font-size: 26px;
  }

  .core-grid {
    gap: 40px;
  }

  .core-grid h2 {
    font-size: 21px;
  }

  .faq-question {
    padding: 14px 14px;
    font-size: 14px;
  }

  .faq-answer p {
    padding: 0 14px 14px 52px;
  }

  .process-steps li {
    grid-template-columns: 44px 1fr;
    gap: 12px;
  }

  .step-num {
    width: 38px;
    height: 38px;
    font-size: 17px;
  }

  .process-steps li::before {
    left: 17px;
  }

  .resource-card {
    padding: 22px 18px;
  }

  .contact-card {
    padding: 24px 18px;
  }

  .contact-title {
    font-size: 20px;
  }

  .btn {
    height: 42px;
    padding: 0 22px;
  }
}

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

  html {
    scroll-behavior: auto;
  }

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