/* roulang page: index */
:root {
  --c-primary: #0D4F4A;
  --c-primary-dark: #083D39;
  --c-primary-deep: #062B28;
  --c-accent: #B79A63;
  --c-accent-soft: #D9C9A3;
  --c-bg: #F4F1EB;
  --c-surface: #FFFFFF;
  --c-ink: #17201F;
  --c-ink-soft: #5B6B68;
  --c-line: #E4E0D8;
  --c-dark-bg: #0C1C1B;
  --c-text-on-dark: #EDEAE3;
  --c-success: #2F7D68;
  --c-error: #B4453C;

  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", STSong, serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;

  --text-display: clamp(2.75rem, 6vw, 4.75rem);
  --text-h1: clamp(2.125rem, 4vw, 3.25rem);
  --text-h2: clamp(1.625rem, 2.8vw, 2.375rem);
  --text-h3: 1.375rem;
  --text-body: 1rem;
  --text-sm: 0.875rem;
  --text-label: 0.75rem;

  --space-section: clamp(4.5rem, 9vw, 8.5rem);
  --space-block: clamp(2.5rem, 5vw, 4rem);
  --space-card: 1.75rem;

  --sidebar-width: 264px;
  --max-content: 1200px;
  --max-copy: 720px;

  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-full: 999px;
  --shadow-hover: 0 10px 30px rgba(8, 45, 42, 0.08);
  --shadow-cta: 0 8px 20px rgba(13, 79, 74, 0.18);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.85;
  color: var(--c-ink);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
ul, ol { list-style: none; }
.container {
  max-width: var(--max-content);
  margin: 0 auto;
  padding-left: clamp(24px, 5vw, 64px);
  padding-right: clamp(24px, 5vw, 64px);
}
.container-narrow { max-width: var(--max-copy); margin: 0 auto; padding-left: 24px; padding-right: 24px; }

/* 侧边栏 */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--c-dark-bg);
  color: var(--c-text-on-dark);
  z-index: 200;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(183,154,99,.3) transparent;
}
.brand {
  padding: 2rem 1.75rem 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.brand-link { display: flex; flex-direction: column; gap: 2px; }
.brand-main {
  font-family: var(--font-display);
  font-size: 1.625rem;
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: 0.04em;
  line-height: 1.2;
}
.brand-sub {
  font-size: 0.75rem;
  color: rgba(237,234,227,.65);
  letter-spacing: 0.18em;
}
.sidebar-nav { flex: 1; padding: 0.75rem 0; overflow-y: auto; }
.nav-group { margin-bottom: 0.5rem; }
.nav-label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: rgba(237,234,227,.4);
  padding: 1rem 1.75rem 0.5rem;
}
.nav-item {
  position: relative;
  display: block;
  padding: 0.55rem 1.75rem;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: rgba(237,234,227,.82);
  transition: color 0.25s var(--ease), padding-left 0.25s var(--ease);
}
.nav-item::before {
  content: "";
  position: absolute;
  left: 0; top: 0.55rem; bottom: 0.55rem;
  width: 0;
  background: var(--c-accent);
  transition: width 0.25s var(--ease);
}
.nav-item:hover { color: var(--c-accent); padding-left: 2rem; }
.nav-item:hover::before { width: 2px; }
.nav-item.active {
  color: var(--c-accent);
  font-weight: 600;
}
.nav-item.active::before { width: 2px; }
.sidebar-footer {
  padding: 1.25rem 1.75rem 1.75rem;
  border-top: 1px solid rgba(255,255,255,.08);
}
.sidebar-contact { font-size: 0.8125rem; line-height: 1.8; color: rgba(237,234,227,.6); margin-bottom: 1rem; }
.sidebar-contact span { display: block; }
.sidebar-cta {
  display: block;
  text-align: center;
  background: var(--c-primary);
  color: var(--c-text-on-dark);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-xs);
  padding: 0.7rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  transition: background 0.25s var(--ease), transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.sidebar-cta:hover {
  background: var(--c-primary-light, #17645D);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,0,0,.2);
}

/* 移动端顶部栏 */
.mobile-header {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 64px;
  background: var(--c-dark-bg);
  color: var(--c-text-on-dark);
  z-index: 210;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.mobile-brand {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: 0.02em;
  line-height: 1.3;
}
.mobile-brand small { display: block; font-size: 0.625rem; color: rgba(237,234,227,.55); letter-spacing: 0.14em; font-weight: 400; }
.mobile-menu-btn {
  width: 42px; height: 42px;
  background: transparent;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: border-color 0.2s var(--ease);
}
.mobile-menu-btn span { display: block; width: 18px; height: 1.5px; background: var(--c-accent); transition: transform 0.25s var(--ease), opacity 0.25s var(--ease); }
.mobile-menu-btn:hover { border-color: var(--c-accent); }
.mobile-menu-btn.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.mobile-menu-btn.open span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-drawer {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--c-dark-bg);
  z-index: 205;
  padding: 96px 2rem 2rem;
  transform: translateY(-100%);
  transition: transform 0.4s var(--ease);
  overflow-y: auto;
  visibility: hidden;
}
.mobile-drawer.open { transform: translateY(0); visibility: visible; }
.drawer-close-btn {
  position: absolute;
  top: 16px; right: 16px;
  width: 42px; height: 42px;
  background: transparent;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius-sm);
  color: var(--c-text-on-dark);
  font-size: 1.25rem;
  transition: border-color 0.2s var(--ease);
}
.drawer-close-btn:hover { border-color: var(--c-accent); }
.drawer-nav-list { display: flex; flex-direction: column; gap: 1.25rem; }
.drawer-nav-list a {
  font-family: var(--font-display);
  font-size: var(--text-h3);
  color: var(--c-text-on-dark);
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
  opacity: 0;
  transform: translateY(16px);
}
.drawer-nav-list a.active { color: var(--c-accent); border-bottom-color: var(--c-accent); }
.drawer-nav-list a:hover { color: var(--c-accent); }
.mobile-drawer.open .drawer-nav-list a { animation: drawerFadeUp 0.4s var(--ease) forwards; }
.mobile-drawer.open .drawer-nav-list a:nth-child(1) { animation-delay: 0.05s; }
.mobile-drawer.open .drawer-nav-list a:nth-child(2) { animation-delay: 0.1s; }
.mobile-drawer.open .drawer-nav-list a:nth-child(3) { animation-delay: 0.15s; }
.mobile-drawer.open .drawer-nav-list a:nth-child(4) { animation-delay: 0.2s; }
.mobile-drawer.open .drawer-nav-list a:nth-child(5) { animation-delay: 0.25s; }
@keyframes drawerFadeUp {
  to { opacity: 1; transform: translateY(0); }
}
.drawer-contact { margin-top: 2rem; font-size: 0.875rem; color: rgba(237,234,227,.6); line-height: 2; }
.drawer-cta {
  display: block;
  margin-top: 1.5rem;
  text-align: center;
  background: var(--c-primary);
  color: var(--c-text-on-dark);
  border-radius: var(--radius-xs);
  padding: 0.85rem 1.5rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  transition: background 0.2s var(--ease);
}
.drawer-cta:hover { background: #17645D; }

/* 主区域 */
.main-area {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--c-bg);
}

/* 通用板块 */
.section { padding-top: var(--space-section); padding-bottom: var(--space-section); position: relative; }
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: var(--space-block);
}
.section-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: var(--text-label);
  letter-spacing: 0.08em;
  color: var(--c-accent);
  margin-bottom: 0.75rem;
  font-weight: 500;
}
.section-label::before {
  content: "";
  display: block;
  width: 28px;
  height: 1px;
  background: var(--c-accent);
}
.section-title {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  font-weight: 600;
  line-height: 1.25;
  color: var(--c-ink);
}
.section-intro {
  max-width: 380px;
  font-size: var(--text-sm);
  color: var(--c-ink-soft);
  line-height: 1.8;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  background-image: linear-gradient(100deg, rgba(6,43,40,.92), rgba(13,79,74,.55), rgba(13,79,74,.15)), url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: clamp(2rem, 6vw, 5rem) clamp(1.5rem, 5vw, 5rem);
  position: relative;
  color: var(--c-text-on-dark);
}
.hero-inner { width: 100%; max-width: var(--max-content); margin: 0 auto; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--text-label);
  letter-spacing: 0.14em;
  color: var(--c-accent);
  border: 1px solid rgba(183,154,99,.4);
  background: rgba(183,154,99,.1);
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  margin-bottom: 1.5rem;
}
.hero-title {
  font-family: var(--font-display);
  font-size: var(--text-display);
  font-weight: 600;
  line-height: 1.15;
  color: #fff;
  max-width: 760px;
  margin-bottom: 1.25rem;
}
.hero-subtitle {
  font-size: clamp(0.9375rem, 1.4vw, 1.125rem);
  line-height: 1.7;
  color: rgba(237,234,227,.85);
  max-width: 560px;
  margin-bottom: 2rem;
}
.hero-cta-row { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 2.5rem; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: var(--radius-xs);
  padding: 0.85rem 2rem;
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  border: 1px solid transparent;
  transition: all 0.25s var(--ease);
  line-height: 1.4;
  text-align: center;
}
.btn-primary {
  background: var(--c-accent);
  color: var(--c-primary-deep);
}
.btn-primary:hover { background: #C9AE75; transform: translateY(-2px); box-shadow: 0 10px 24px rgba(183,154,99,.28); }
.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,.5);
  color: #fff;
}
.btn-outline:hover { border-color: var(--c-accent); color: var(--c-accent); background: rgba(183,154,99,.08); }
.btn-outline-dark {
  background: transparent;
  border-color: var(--c-primary);
  color: var(--c-primary);
}
.btn-outline-dark:hover { background: var(--c-primary); color: #fff; }
.btn-block { display: block; width: 100%; text-align: center; justify-content: center; }
.btn-dark {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}
.btn-dark:hover { background: var(--c-primary-dark); border-color: var(--c-primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-cta); }
.btn-accent-block {
  display: block;
  width: 100%;
  text-align: center;
  background: var(--c-accent);
  color: var(--c-primary-deep);
  border-radius: var(--radius-xs);
  padding: 0.75rem 1.25rem;
  font-weight: 500;
  border: none;
  transition: all 0.25s var(--ease);
}
.btn-accent-block:hover { background: #C9AE75; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(183,154,99,.3); }
.btn-accent-block:active { transform: translateY(0); }

.hero-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-top: 1px solid rgba(255,255,255,.15);
  padding-top: 1.25rem;
  max-width: var(--max-content);
}
.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding-right: 2rem;
  margin-right: 2rem;
  border-right: 1px solid rgba(255,255,255,.15);
}
.hero-meta-item:last-child { border-right: none; margin-right: 0; padding-right: 0; }
.hero-meta-item .meta-label { font-size: var(--text-label); color: var(--c-accent); letter-spacing: 0.06em; }
.hero-meta-item .meta-value { font-size: var(--text-sm); color: rgba(237,234,227,.85); }
.hero-scroll {
  position: absolute;
  right: 2.5rem;
  bottom: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  color: rgba(237,234,227,.5);
  writing-mode: vertical-rl;
}
.hero-scroll::before {
  content: "";
  display: block;
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, transparent, var(--c-accent));
  animation: scrollLine 2s var(--ease) infinite;
}
@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; opacity: 0; }
  50% { transform: scaleY(1); transform-origin: top; opacity: 1; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

/* 时间线 */
.timeline-section { background: var(--c-bg); }
.timeline-wrap { position: relative; padding-left: 28px; }
.timeline-wrap::before {
  content: "";
  position: absolute;
  left: 8px; top: 8px; bottom: 8px;
  width: 2px;
  background: var(--c-primary);
  opacity: 0.18;
}
.timeline-item {
  position: relative;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-left: 2px solid transparent;
  border-radius: var(--radius-sm);
  padding: 1.5rem 1.75rem;
  margin-bottom: 1.5rem;
  transition: all 0.25s var(--ease);
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 1.75rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-accent);
  border: 3px solid var(--c-bg);
  box-shadow: 0 0 0 2px var(--c-accent);
}
.timeline-item:hover {
  border-left-color: var(--c-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.timeline-year {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 0.5rem;
}
.timeline-title { font-size: 1.125rem; font-weight: 600; color: var(--c-ink); margin-bottom: 0.5rem; }
.timeline-desc { font-size: var(--text-sm); color: var(--c-ink-soft); line-height: 1.75; }

/* 亮点 */
.highlights-section { background: var(--c-surface); border-top: 1px solid var(--c-line); border-bottom: 1px solid var(--c-line); }
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-bottom: var(--space-block);
}
.team-card { text-align: left; }
.team-avatar {
  width: 100%;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 1rem;
  border: 1px solid var(--c-line);
  transition: transform 0.3s var(--ease);
}
.team-avatar img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.85); transition: filter 0.3s var(--ease), transform 0.3s var(--ease); }
.team-card:hover .team-avatar img { filter: saturate(1); transform: scale(1.04); }
.team-name { font-family: var(--font-display); font-size: 1.125rem; font-weight: 600; color: var(--c-ink); margin-bottom: 0.35rem; }
.team-role { font-size: var(--text-label); color: var(--c-accent); letter-spacing: 0.06em; margin-bottom: 0.5rem; font-weight: 500; }
.team-brief { font-size: var(--text-sm); color: var(--c-ink-soft); line-height: 1.7; }

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  border-top: 1px solid var(--c-line);
  padding-top: var(--space-block);
}
.stat-item { text-align: center; }
.stat-number {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4vw, 3.5rem);
  font-weight: 700;
  color: var(--c-primary);
  line-height: 1.2;
}
.stat-number small { font-size: 0.6em; color: var(--c-accent); margin-left: 2px; }
.stat-label { font-size: var(--text-sm); color: var(--c-ink-soft); margin-top: 0.5rem; }

/* 资讯列表 */
.news-section { background: var(--c-bg); }
.news-list { border-top: 1px solid var(--c-line); }
.news-row {
  display: grid;
  grid-template-columns: 110px 120px 1fr 240px 32px;
  gap: 1rem;
  align-items: center;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--c-line);
  transition: background 0.2s var(--ease), padding-left 0.2s var(--ease);
}
.news-row:hover { background: rgba(255,255,255,.6); padding-left: 0.5rem; }
.news-date { font-size: var(--text-label); color: var(--c-ink-soft); letter-spacing: 0.04em; }
.news-cat {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  background: #EFEDE7;
  color: var(--c-primary);
  border-radius: var(--radius-full);
  padding: 0.2rem 0.85rem;
  font-size: 0.75rem;
  font-weight: 500;
}
.news-title { font-size: 1.0625rem; font-weight: 600; color: var(--c-ink); transition: color 0.2s var(--ease); line-height: 1.5; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.news-row:hover .news-title { color: var(--c-primary); }
.news-summary { font-size: var(--text-sm); color: var(--c-ink-soft); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.news-arrow { font-size: 1.125rem; color: var(--c-primary); transition: transform 0.25s var(--ease); text-align: right; }
.news-row:hover .news-arrow { transform: translateX(6px); }
.news-empty {
  border: 1px dashed var(--c-line);
  border-radius: var(--radius-sm);
  background: var(--c-surface);
  padding: 3rem 2rem;
  text-align: center;
  color: var(--c-ink-soft);
  font-size: var(--text-sm);
  margin-top: 1rem;
}

/* 服务方案对比 */
.plans-section { background: var(--c-surface); border-top: 1px solid var(--c-line); border-bottom: 1px solid var(--c-line); }
.plans-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; align-items: stretch; }
.plan-card {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.plan-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.plan-card.recommended { border: 2px solid var(--c-primary); transform: scale(1.02); position: relative; }
.plan-card.recommended:hover { transform: scale(1.02) translateY(-4px); }
.plan-flag {
  position: absolute;
  top: -14px; left: 50%;
  transform: translateX(-50%);
  background: var(--c-accent);
  color: var(--c-primary-deep);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  border-radius: var(--radius-full);
  padding: 0.2rem 1rem;
  white-space: nowrap;
}
.plan-name { font-family: var(--font-display); font-size: 1.25rem; font-weight: 600; color: var(--c-ink); margin-bottom: 0.25rem; }
.plan-target { font-size: var(--text-label); color: var(--c-ink-soft); margin-bottom: 1.25rem; }
.plan-price { display: flex; align-items: baseline; gap: 4px; margin-bottom: 1.5rem; }
.plan-price .currency { font-size: 1rem; color: var(--c-primary); font-weight: 600; }
.plan-price .amount { font-family: var(--font-display); font-size: 2.5rem; font-weight: 700; color: var(--c-primary); line-height: 1; }
.plan-price .unit { font-size: var(--text-sm); color: var(--c-ink-soft); }
.plan-features { flex: 1; margin-bottom: 1.5rem; }
.plan-features li {
  position: relative;
  padding-left: 1.25rem;
  font-size: var(--text-sm);
  color: var(--c-ink-soft);
  line-height: 1.8;
}
.plan-features li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.65rem;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
}

/* FAQ */
.faq-section { background: var(--c-bg); }
.faq-list { max-width: var(--max-copy); margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--c-line); }
.faq-item:first-child { border-top: 1px solid var(--c-line); }
.faq-question {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 0;
  cursor: pointer;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--c-ink);
  transition: color 0.2s var(--ease);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
}
.faq-question:hover { color: var(--c-primary); }
.faq-question::after {
  content: "+";
  font-size: 1.5rem;
  color: var(--c-accent);
  font-weight: 300;
  transition: transform 0.25s var(--ease);
  flex-shrink: 0;
}
.faq-item.open .faq-question { color: var(--c-primary); }
.faq-item.open .faq-question::after { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s var(--ease);
}
.faq-answer-inner {
  padding: 0 2rem 1.25rem 0;
  font-size: var(--text-sm);
  color: var(--c-ink-soft);
  line-height: 1.8;
  border-left: 2px solid var(--c-line);
  padding-left: 1.5rem;
}

/* CTA表单 */
.cta-section { background: var(--c-dark-bg); position: relative; overflow: hidden; }
.cta-section::before {
  content: "bd半岛";
  position: absolute;
  right: -2%;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-size: clamp(8rem, 20vw, 18rem);
  font-weight: 700;
  color: rgba(255,255,255,.04);
  line-height: 1;
  pointer-events: none;
  z-index: 0;
}
.cta-wrap { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-block); align-items: center; }
.cta-left h2 { font-family: var(--font-display); font-size: var(--text-h2); font-weight: 600; color: var(--c-text-on-dark); line-height: 1.3; margin-bottom: 1.5rem; }
.cta-left p { font-size: var(--text-sm); color: rgba(237,234,227,.7); line-height: 1.9; margin-bottom: 2rem; max-width: 420px; }
.cta-contact-list { display: flex; flex-direction: column; gap: 0.5rem; font-size: var(--text-sm); color: rgba(237,234,227,.6); }
.cta-contact-list span strong { color: var(--c-accent); font-weight: 500; margin-right: 0.5rem; }
.appointment-form {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-sm);
  padding: 2rem;
  backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.form-field label {
  display: block;
  font-size: var(--text-label);
  letter-spacing: 0.06em;
  color: rgba(237,234,227,.6);
  margin-bottom: 0.4rem;
}
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius-xs);
  padding: 0.7rem 0.875rem;
  font-size: var(--text-sm);
  color: var(--c-text-on-dark);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.form-field input::placeholder,
.form-field textarea::placeholder { color: #9DA8A5; }
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(183,154,99,.2);
}
.form-field select option { color: var(--c-ink); background: var(--c-surface); }
.form-status { font-size: var(--text-sm); min-height: 1.5em; margin-top: 0.25rem; }
.form-status.success { color: var(--c-success); }
.form-status.error { color: var(--c-error); }

/* 页脚 */
.footer { background: var(--c-dark-bg); color: var(--c-text-on-dark); padding-top: var(--space-block); border-top: 1px solid rgba(255,255,255,.08); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2rem;
}
.footer-brand-name { font-family: var(--font-display); font-size: 1.375rem; font-weight: 700; color: var(--c-accent); margin-bottom: 0.75rem; }
.footer-brand-desc { font-size: var(--text-sm); color: rgba(237,234,227,.6); line-height: 1.8; max-width: 280px; }
.footer-heading { font-size: var(--text-sm); font-weight: 600; color: var(--c-text-on-dark); margin-bottom: 1rem; letter-spacing: 0.04em; }
.footer-links { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-links a { font-size: var(--text-sm); color: rgba(237,234,227,.6); transition: color 0.2s var(--ease); }
.footer-links a:hover { color: var(--c-accent); }
.footer-contact { font-size: var(--text-sm); color: rgba(237,234,227,.6); line-height: 1.9; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 1rem 0;
  font-size: 0.8125rem;
  color: rgba(237,234,227,.4);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* 动效入场 */
.fade-up { opacity: 0; transform: translateY(16px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* 响应式 */
@media (max-width: 1023px) {
  .sidebar { display: none; }
  .mobile-header { display: flex; }
  .main-area { margin-left: 0; padding-top: 64px; }
  .mobile-drawer { display: block; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .plans-grid { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }
  .plan-card.recommended { transform: none; }
  .plan-card.recommended:hover { transform: translateY(-4px); }
  .cta-wrap { grid-template-columns: 1fr; gap: 2rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .news-row { grid-template-columns: 90px 100px 1fr 32px; }
  .news-summary { display: none; }
}
@media (max-width: 767px) {
  .section { padding-left: 20px; padding-right: 20px; }
  .section-header { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .section-intro { max-width: 100%; }
  .hero { padding: 2rem 1.25rem 3rem; min-height: 520px; align-items: flex-end; }
  .hero-meta-row { gap: 1rem; }
  .hero-meta-item { padding-right: 1rem; margin-right: 1rem; }
  .hero-scroll { display: none; }
  .team-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
  .news-row { grid-template-columns: 1fr 32px; gap: 0.25rem; padding: 1rem 0; }
  .news-date { grid-column: 1 / -1; font-size: 0.75rem; }
  .news-cat { display: none; }
  .news-summary { display: block; grid-column: 1 / -1; white-space: normal; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
  .news-arrow { grid-column: 2; grid-row: 2 / 4; }
  .plans-grid { gap: 1rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .btn { width: 100%; justify-content: center; }
  .hero-cta-row .btn { width: auto; min-width: 42%; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 420px) {
  .team-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .appointment-form { padding: 1.5rem; }
  .cta-wrap { gap: 1.5rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
  .fade-up { opacity: 1; transform: none; }
}

/* roulang page: article */
:root {
            --c-primary: #0D4F4A;
            --c-primary-dark: #083D39;
            --c-primary-deep: #062B28;
            --c-accent: #B79A63;
            --c-accent-soft: #D9C9A3;
            --c-bg: #F4F1EB;
            --c-surface: #FFFFFF;
            --c-ink: #17201F;
            --c-ink-soft: #5B6B68;
            --c-line: #E4E0D8;
            --c-dark-bg: #0C1C1B;
            --c-text-on-dark: #EDEAE3;
            --c-success: #2F7D68;
            --c-error: #B4453C;
            --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", STSong, serif;
            --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --text-display: clamp(2.75rem, 6vw, 4.75rem);
            --text-h1: clamp(2.125rem, 4vw, 3.25rem);
            --text-h2: clamp(1.625rem, 2.8vw, 2.375rem);
            --text-h3: 1.375rem;
            --text-body: 1rem;
            --text-sm: 0.875rem;
            --text-label: 0.75rem;
            --space-section: clamp(4.5rem, 9vw, 8.5rem);
            --space-block: clamp(2.5rem, 5vw, 4rem);
            --space-card: 1.75rem;
            --sidebar-width: 264px;
            --max-content: 1200px;
            --max-copy: 720px;
            --radius-xs: 2px;
            --radius-sm: 4px;
            --radius-full: 999px;
            --shadow-hover: 0 10px 30px rgba(8, 45, 42, 0.08);
            --shadow-cta: 0 8px 20px rgba(13, 79, 74, 0.18);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-body);
            background: var(--c-bg);
            color: var(--c-ink);
            line-height: 1.85;
            font-size: var(--text-body);
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: var(--c-primary);
            text-decoration: none;
            transition: color .25s ease;
        }
        a:hover {
            color: var(--c-accent);
        }
        button {
            cursor: pointer;
            font-family: var(--font-body);
        }
        .container {
            max-width: var(--max-content);
            margin: 0 auto;
            padding: 0 32px;
        }
        .sidebar {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: var(--sidebar-width);
            background: var(--c-dark-bg);
            color: var(--c-text-on-dark);
            display: flex;
            flex-direction: column;
            padding: 32px 24px;
            z-index: 1000;
            overflow-y: auto;
        }
        .sidebar-brand {
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            margin-bottom: 24px;
        }
        .sidebar-logo {
            font-family: var(--font-display);
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--c-accent);
            letter-spacing: 0.02em;
            line-height: 1.3;
        }
        .sidebar-sub {
            font-size: 0.875rem;
            color: rgba(237, 234, 227, 0.65);
        }
        .sidebar-label {
            font-size: var(--text-label);
            color: rgba(237, 234, 227, 0.5);
            letter-spacing: 0.12em;
            margin-bottom: 12px;
            margin-top: 20px;
        }
        .sidebar-label:first-of-type {
            margin-top: 0;
        }
        .nav-group {
            display: flex;
            flex-direction: column;
            gap: 2px;
            margin-bottom: 20px;
        }
        .nav-item {
            padding: 10px 14px;
            color: var(--c-text-on-dark);
            font-size: 0.9375rem;
            border-left: 2px solid transparent;
            transition: all .25s ease;
            position: relative;
        }
        .nav-item:hover {
            color: var(--c-accent);
            border-left-color: var(--c-accent-soft);
            padding-left: 20px;
        }
        .nav-item.active {
            color: var(--c-accent);
            border-left-color: var(--c-accent);
        }
        .sidebar-cta {
            margin-top: auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-body);
            font-size: 0.9375rem;
            font-weight: 500;
            padding: 0.85rem 2rem;
            border-radius: var(--radius-xs);
            border: 1px solid transparent;
            transition: all .2s cubic-bezier(0.22, 0.61, 0.36, 1);
            text-align: center;
        }
        .btn-primary {
            background: var(--c-primary);
            color: #fff;
            border: 1px solid var(--c-primary);
        }
        .btn-primary:hover {
            background: var(--c-primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-cta);
        }
        .btn-accent {
            background: var(--c-accent);
            color: var(--c-primary-deep);
            border: 1px solid var(--c-accent);
        }
        .btn-accent:hover {
            background: var(--c-accent-soft);
            color: var(--c-primary-deep);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(183, 154, 99, 0.25);
        }
        .btn-outline-light {
            background: transparent;
            color: var(--c-text-on-dark);
            border: 1px solid rgba(255, 255, 255, 0.6);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            color: var(--c-text-on-dark);
            border-color: var(--c-accent-soft);
        }
        .main-wrapper {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: var(--c-dark-bg);
            z-index: 999;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .mobile-logo {
            font-family: var(--font-display);
            color: var(--c-accent);
            font-size: 1.125rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .mobile-menu-btn {
            background: none;
            border: none;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
        }
        .mobile-menu-btn span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--c-accent-soft);
            border-radius: 2px;
            transition: all .3s ease;
        }
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: 100%;
            max-width: 420px;
            background: var(--c-dark-bg);
            z-index: 1100;
            flex-direction: column;
            padding: 80px 32px 32px;
            transform: translateX(100%);
            transition: transform .35s cubic-bezier(0.22, 0.61, 0.36, 1);
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .mobile-drawer-close {
            position: absolute;
            top: 18px;
            right: 18px;
            background: none;
            border: none;
            color: var(--c-text-on-dark);
            font-size: 1.5rem;
            width: 40px;
            height: 40px;
        }
        .mobile-drawer .nav-item {
            font-size: 1.25rem;
            font-family: var(--font-display);
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            border-left: none;
        }
        .mobile-drawer .nav-item.active {
            border-bottom: 2px solid var(--c-accent);
            padding-left: 0;
        }
        .mobile-drawer .nav-item:hover {
            padding-left: 10px;
            border-left: none;
        }
        .mobile-drawer-cta {
            margin-top: 40px;
        }
        .overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(6, 43, 40, 0.6);
            z-index: 1050;
            backdrop-filter: blur(2px);
        }
        .overlay.show {
            display: block;
        }
        .article-page {
            flex: 1;
            padding: clamp(2rem, 5vw, 4rem) 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.875rem;
            color: var(--c-ink-soft);
            margin-bottom: 2.5rem;
        }
        .breadcrumb a {
            color: var(--c-ink-soft);
            transition: color .2s;
        }
        .breadcrumb a:hover {
            color: var(--c-primary);
        }
        .breadcrumb .sep {
            color: var(--c-line);
        }
        .article-header {
            max-width: var(--max-copy);
            margin: 0 auto 2rem;
        }
        .article-title {
            font-family: var(--font-display);
            font-size: var(--text-h1);
            font-weight: 600;
            line-height: 1.2;
            color: var(--c-ink);
            margin-bottom: 1.25rem;
            letter-spacing: -0.01em;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: var(--text-sm);
            color: var(--c-ink-soft);
            padding-bottom: 24px;
            border-bottom: 1px solid var(--c-line);
        }
        .meta-label {
            font-size: var(--text-label);
            letter-spacing: 0.06em;
            color: var(--c-ink-soft);
        }
        .article-category-badge {
            display: inline-block;
            background: #EFEDE7;
            color: var(--c-primary);
            font-size: 0.75rem;
            padding: 0.25rem 0.75rem;
            border-radius: var(--radius-full);
            font-weight: 500;
        }
        .article-body-wrapper {
            max-width: var(--max-copy);
            margin: 0 auto;
        }
        .article-content {
            padding: 2.5rem 0;
            font-size: 1.0625rem;
            line-height: 1.9;
            color: var(--c-ink);
        }
        .article-content p {
            margin-bottom: 1.6em;
        }
        .article-content h2 {
            font-family: var(--font-display);
            font-size: var(--text-h2);
            font-weight: 600;
            margin: 2.2em 0 0.9em;
            line-height: 1.3;
            color: var(--c-ink);
        }
        .article-content h3 {
            font-family: var(--font-display);
            font-size: 1.375rem;
            font-weight: 600;
            margin: 2em 0 0.8em;
            line-height: 1.4;
            color: var(--c-ink);
        }
        .article-content blockquote {
            border-left: 3px solid var(--c-accent);
            background: rgba(183, 154, 99, 0.08);
            padding: 1.25rem 1.5rem;
            margin: 1.8rem 0;
            font-style: italic;
            color: var(--c-ink-soft);
            border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
        }
        .article-content ul, .article-content ol {
            margin: 0 0 1.6em 1.2em;
            padding-left: 0.5em;
        }
        .article-content li {
            margin-bottom: 0.4em;
        }
        .article-content ul li::marker {
            color: var(--c-accent);
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            font-size: 0.9375rem;
        }
        .article-content table th, .article-content table td {
            border: 1px solid var(--c-line);
            padding: 12px 16px;
            text-align: left;
        }
        .article-content table th {
            background: #EFEDE7;
            font-weight: 600;
            color: var(--c-primary-dark);
        }
        .article-content img {
            border-radius: var(--radius-sm);
            margin: 2rem 0;
        }
        .article-content code {
            background: #EFEDE7;
            padding: 2px 8px;
            border-radius: 3px;
            font-size: 0.9em;
            font-family: "SFMono-Regular", Consolas, monospace;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            padding: 1.5rem 0;
            border-top: 1px solid var(--c-line);
            margin-bottom: 2.5rem;
        }
        .article-tag {
            display: inline-block;
            background: #EFEDE7;
            color: var(--c-primary);
            font-size: 0.875rem;
            padding: 0.3rem 0.9rem;
            border-radius: var(--radius-full);
            transition: all .2s ease;
        }
        .article-tag:hover {
            background: var(--c-primary);
            color: #fff;
        }
        .post-nav {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            padding: 2rem 0;
            border-top: 1px solid var(--c-line);
            margin-bottom: 2rem;
        }
        .post-nav-link {
            display: flex;
            flex-direction: column;
            gap: 6px;
            padding: 18px 20px;
            background: var(--c-surface);
            border: 1px solid var(--c-line);
            border-radius: var(--radius-sm);
            transition: all .25s ease;
            color: var(--c-ink);
        }
        .post-nav-link:hover {
            border-color: var(--c-primary);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            color: var(--c-primary);
        }
        .post-nav-label {
            font-size: var(--text-label);
            color: var(--c-ink-soft);
            letter-spacing: 0.08em;
        }
        .post-nav-title {
            font-family: var(--font-display);
            font-size: 1rem;
            line-height: 1.4;
        }
        .section-title {
            font-family: var(--font-display);
            font-size: var(--text-h2);
            font-weight: 600;
            line-height: 1.2;
            margin-bottom: 1.5rem;
            color: var(--c-ink);
        }
        .related-posts {
            margin-top: 2rem;
            padding-top: 2rem;
            border-top: 1px solid var(--c-line);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--c-surface);
            border: 1px solid var(--c-line);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all .25s ease;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            border-color: var(--c-primary);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .related-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .related-card-body {
            padding: 1.25rem;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }
        .related-card-title {
            font-family: var(--font-display);
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--c-ink);
            line-height: 1.4;
            transition: color .2s;
        }
        .related-card:hover .related-card-title {
            color: var(--c-primary);
        }
        .related-card-desc {
            font-size: 0.875rem;
            color: var(--c-ink-soft);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card-meta {
            font-size: var(--text-label);
            color: #9DA8A5;
            margin-top: auto;
        }
        .back-links {
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--c-line);
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }
        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9375rem;
            color: var(--c-primary);
            transition: gap .2s ease;
        }
        .back-link:hover {
            gap: 10px;
            color: var(--c-accent);
        }
        .not-found {
            text-align: center;
            padding: 6rem 2rem;
            background: var(--c-surface);
            border: 1px dashed var(--c-line);
            border-radius: var(--radius-sm);
        }
        .not-found-title {
            font-family: var(--font-display);
            font-size: var(--text-h2);
            color: var(--c-ink);
            margin-bottom: 1rem;
        }
        .not-found-desc {
            color: var(--c-ink-soft);
            margin-bottom: 1.5rem;
        }
        .footer {
            background: var(--c-dark-bg);
            color: var(--c-text-on-dark);
            padding: 4rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 3rem;
        }
        .footer-brand-name {
            font-family: var(--font-display);
            font-size: 1.375rem;
            color: var(--c-accent);
            font-weight: 600;
            margin-bottom: 12px;
        }
        .footer-brand-desc {
            color: rgba(237, 234, 227, 0.65);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .footer-heading {
            font-size: 1rem;
            font-weight: 500;
            color: var(--c-text-on-dark);
            margin-bottom: 18px;
            letter-spacing: 0.04em;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: rgba(237, 234, 227, 0.7);
            font-size: 0.9rem;
            transition: color .2s;
        }
        .footer-links a:hover {
            color: var(--c-accent);
        }
        .footer-contact {
            color: rgba(237, 234, 227, 0.7);
            font-size: 0.9rem;
            line-height: 1.9;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 1.5rem 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8125rem;
            color: rgba(237, 234, 227, 0.45);
        }
        .reveal {
            opacity: 0;
            transform: translateY(16px);
            transition: opacity .6s cubic-bezier(0.22, 0.61, 0.36, 1), transform .6s cubic-bezier(0.22, 0.61, 0.36, 1);
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        @media (max-width: 1023px) {
            .sidebar {
                display: none;
            }
            .mobile-header {
                display: flex;
            }
            .mobile-drawer {
                display: flex;
            }
            .main-wrapper {
                margin-left: 0;
                padding-top: 64px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 767px) {
            .container {
                padding: 0 20px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .post-nav {
                grid-template-columns: 1fr;
            }
            .article-meta {
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .breadcrumb {
                font-size: 0.8125rem;
            }
        }
        @media (max-width: 420px) {
            .article-title {
                font-size: 1.75rem;
            }
            .related-card-img {
                height: 160px;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
            .reveal {
                opacity: 1;
                transform: none;
            }
        }

/* roulang page: category1 */
:root{
  --c-primary:#0D4F4A;
  --c-primary-dark:#083D39;
  --c-primary-deep:#062B28;
  --c-accent:#B79A63;
  --c-accent-soft:#D9C9A3;
  --c-bg:#F4F1EB;
  --c-surface:#FFFFFF;
  --c-ink:#17201F;
  --c-ink-soft:#5B6B68;
  --c-line:#E4E0D8;
  --c-dark-bg:#0C1C1B;
  --c-text-on-dark:#EDEAE3;
  --c-success:#2F7D68;
  --c-error:#B4453C;
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",STSong,serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --text-display:clamp(2.75rem,6vw,4.75rem);
  --text-h1:clamp(2.125rem,4vw,3.25rem);
  --text-h2:clamp(1.625rem,2.8vw,2.375rem);
  --text-h3:1.375rem;
  --text-body:1rem;
  --text-sm:0.875rem;
  --text-label:0.75rem;
  --space-section:clamp(4.5rem,9vw,8.5rem);
  --space-block:clamp(2.5rem,5vw,4rem);
  --space-card:1.75rem;
  --sidebar-width:264px;
  --max-content:1200px;
  --max-copy:720px;
  --radius-xs:2px;
  --radius-sm:4px;
  --radius-full:999px;
  --shadow-hover:0 10px 30px rgba(8,45,42,.08);
  --shadow-cta:0 8px 20px rgba(13,79,74,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-body);font-size:var(--text-body);line-height:1.85;color:var(--c-ink);background:var(--c-bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,textarea,select{font-family:inherit;font-size:1rem}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;line-height:1.2;letter-spacing:0}
.container{max-width:var(--max-content);margin:0 auto;padding:0 40px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:.85rem 2rem;border-radius:var(--radius-xs);font-size:.9375rem;font-weight:500;transition:all .25s var(--ease);line-height:1.4;white-space:nowrap}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 4px 14px rgba(183,154,99,.25)}
.btn-accent:hover{background:#C7A874;transform:translateY(-2px);box-shadow:0 8px 22px rgba(183,154,99,.35)}
.btn-accent:active{transform:translateY(0) scale(.98)}
.btn-outline{background:transparent;border:1px solid rgba(255,255,255,.6);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-2px)}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-cta)}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-outline-dark{background:transparent;border:1px solid var(--c-primary);color:var(--c-primary)}
.btn-outline-dark:hover{background:var(--c-primary);color:#fff;transform:translateY(-2px)}
.btn-outline-dark:active{transform:translateY(0) scale(.98)}
.btn:focus-visible,a:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.badge{display:inline-block;padding:.25rem .75rem;border-radius:var(--radius-full);background:#EFEDE7;color:var(--c-primary);font-size:var(--text-label);line-height:1.5}
.badge-accent{background:var(--c-accent);color:#fff}
.section-label{display:flex;align-items:center;gap:12px;font-size:var(--text-label);letter-spacing:.08em;color:var(--c-accent);font-weight:500;margin-bottom:16px}
.section-label::before{content:"";width:28px;height:1px;background:var(--c-accent)}
/* ===== Sidebar ===== */
.sidebar{position:fixed;top:0;left:0;width:var(--sidebar-width);height:100vh;background:var(--c-dark-bg);color:var(--c-text-on-dark);z-index:1000;display:flex;flex-direction:column;padding:36px 32px 32px;overflow-y:auto}
.sidebar::-webkit-scrollbar{width:4px}
.sidebar::-webkit-scrollbar-track{background:transparent}
.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.15);border-radius:4px}
.sidebar-brand{margin-bottom:40px}
.sidebar-logo-name{font-family:var(--font-display);font-size:1.5rem;font-weight:600;color:#fff;line-height:1.2}
.sidebar-logo-sub{font-size:.75rem;color:var(--c-accent-soft);letter-spacing:.06em;margin-top:4px}
.sidebar-nav{flex:1}
.nav-group{margin-bottom:28px}
.nav-label{font-size:.6875rem;letter-spacing:.14em;color:rgba(255,255,255,.4);text-transform:uppercase;margin-bottom:10px;padding-left:16px}
.nav-item{display:block;position:relative;font-size:.9375rem;line-height:2.4;color:rgba(255,255,255,.72);padding:0 16px;border-left:2px solid transparent;transition:color .25s,background .25s}
.nav-item:hover{color:var(--c-accent)}
.nav-item.active{border-left-color:var(--c-accent);color:var(--c-accent);background:linear-gradient(90deg,rgba(183,154,99,.08),transparent)}
.sidebar-contact{margin-top:28px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08)}
.sidebar-contact-item{font-size:.8125rem;color:rgba(255,255,255,.55);line-height:1.7}
.sidebar-cta{display:block;margin-top:16px;padding:.8rem 1.5rem;background:var(--c-primary);color:#fff;text-align:center;border-radius:var(--radius-xs);font-size:.875rem;transition:background .25s,transform .25s}
.sidebar-cta:hover{background:var(--c-accent);transform:translateY(-2px)}
/* ===== Layout ===== */
.page-main{margin-left:var(--sidebar-width)}
/* ===== Mobile Header ===== */
.mobile-header{display:none;position:fixed;top:0;left:0;right:0;height:64px;background:var(--c-dark-bg);z-index:1001;align-items:center;justify-content:space-between;padding:0 20px}
.mobile-brand-name{font-family:var(--font-display);font-size:1.125rem;color:#fff;letter-spacing:.02em}
.mobile-burger{display:flex;flex-direction:column;gap:5px;padding:10px;cursor:pointer}
.mobile-burger span{display:block;width:22px;height:2px;background:#fff;transition:all .3s var(--ease)}
.mobile-burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.mobile-burger.open span:nth-child(2){opacity:0}
.mobile-burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-drawer{position:fixed;top:0;left:0;right:0;bottom:0;background:var(--c-dark-bg);z-index:1000;padding:24px 32px;display:none;flex-direction:column;opacity:0;transition:opacity .3s var(--ease)}
.mobile-drawer.open{display:flex;opacity:1}
.mobile-drawer-close{position:absolute;top:20px;right:20px;color:#fff;font-size:1.75rem;line-height:1;cursor:pointer;background:none;border:none}
.mobile-drawer .nav-item{font-family:var(--font-display);font-size:1.5rem;padding:14px 0;border-left:none;border-bottom:1px solid rgba(255,255,255,.06)}
.mobile-drawer .nav-item.active{border-bottom-color:var(--c-accent)}
.mobile-drawer-bottom{margin-top:auto;padding-top:24px;border-top:1px solid rgba(255,255,255,.08)}
.mobile-drawer-contact{font-size:.875rem;color:rgba(255,255,255,.5);line-height:1.8}
.mobile-drawer-btn{display:block;margin-top:16px;text-align:center}
@media (max-width:1023px){
  .mobile-header{display:flex}
  .mobile-drawer.open{display:flex}
  .sidebar{display:none}
  .page-main{margin-left:0;padding-top:64px}
  .container{padding:0 28px}
}
/* ===== Hero ===== */
.category-hero{position:relative;min-height:360px;display:flex;align-items:flex-end;background:var(--c-primary-deep);overflow:hidden;padding:80px 0 64px}
.category-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.4}
.category-hero-overlay{position:absolute;inset:0;background:linear-gradient(100deg,rgba(6,43,40,.94),rgba(13,79,74,.56),rgba(13,79,74,.18))}
.category-hero-content{position:relative;z-index:2;max-width:var(--max-content);margin:0 auto;padding:0 40px;width:100%}
.category-hero-tag{display:inline-flex;align-items:center;gap:10px;font-size:var(--text-label);letter-spacing:.1em;color:var(--c-accent);margin-bottom:18px;font-weight:500}
.category-hero-tag::before{content:"";width:24px;height:1px;background:var(--c-accent)}
.category-hero h1{font-size:var(--text-h1);color:#fff;margin-bottom:14px;letter-spacing:.02em}
.category-hero-desc{max-width:640px;font-size:1.0625rem;line-height:1.7;color:rgba(255,255,255,.82)}
@media (max-width:767px){
  .category-hero{min-height:320px;padding:60px 0 48px}
  .category-hero-content{padding:0 20px}
}
/* ===== Generic Section ===== */
.cat-section{padding:var(--space-section) 0}
.cat-section-bg-white{background:var(--c-surface)}
.cat-section-dark{background:var(--c-dark-bg);color:var(--c-text-on-dark)}
.section-head{margin-bottom:48px}
.section-head .section-label{margin-bottom:12px}
.section-head h2{font-size:var(--text-h2);color:var(--c-ink);letter-spacing:.01em}
.section-head-dark h2{color:#fff}
.section-intro{max-width:var(--max-copy);font-size:1rem;line-height:1.85;color:var(--c-ink-soft);margin-top:14px}
/* ===== Intro / Split ===== */
.split-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-media{position:relative;border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--c-line);box-shadow:0 8px 24px rgba(6,43,40,.06)}
.split-media img{width:100%;height:420px;object-fit:cover;transition:transform .5s var(--ease)}
.split-media:hover img{transform:scale(1.02)}
.split-media-caption{position:absolute;bottom:0;left:0;right:0;padding:12px 16px;background:rgba(6,43,40,.65);color:rgba(255,255,255,.88);font-size:.8125rem;backdrop-filter:blur(4px)}
.split-text h3{font-size:var(--text-h3);color:var(--c-ink);margin-bottom:16px}
.split-text p{color:var(--c-ink-soft);margin-bottom:16px;font-size:.9375rem}
.split-points{list-style:none;margin-top:20px;padding:0}
.split-points li{position:relative;padding:4px 0 4px 24px;font-size:.9375rem;color:var(--c-ink-soft)}
.split-points li::before{content:"—";position:absolute;left:0;color:var(--c-accent);font-weight:600}
@media (max-width:900px){
  .split-grid{grid-template-columns:1fr;gap:32px}
  .split-media img{height:300px}
}
/* ===== Activity Types ===== */
.type-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.type-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-sm);padding:28px 24px;transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s}
.type-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--c-accent-soft)}
.type-icon{width:48px;height:48px;border-radius:var(--radius-xs);display:flex;align-items:center;justify-content:center;background:var(--c-primary);color:var(--c-accent);font-family:var(--font-display);font-size:1.375rem;font-weight:600;margin-bottom:18px}
.type-card h3{font-size:1.125rem;color:var(--c-ink);margin-bottom:10px}
.type-card p{font-size:.875rem;color:var(--c-ink-soft);line-height:1.7}
@media (max-width:1023px){
  .type-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:520px){
  .type-grid{grid-template-columns:1fr}
}
/* ===== Featured Picks ===== */
.featured-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.featured-card{position:relative;border-radius:var(--radius-sm);overflow:hidden;min-height:320px;display:flex;align-items:flex-end;border:1px solid var(--c-line);transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.featured-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.featured-bg{position:absolute;inset:0;background-size:cover;background-position:center;transition:transform .5s var(--ease)}
.featured-card:hover .featured-bg{transform:scale(1.04)}
.featured-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(6,43,40,.85) 0%,rgba(6,43,40,.3) 50%,transparent 100%)}
.featured-body{position:relative;z-index:2;padding:28px 24px;color:#fff}
.featured-badge{display:inline-block;padding:4px 12px;background:rgba(183,154,99,.9);border-radius:var(--radius-full);font-size:.6875rem;letter-spacing:.06em;margin-bottom:12px;font-weight:500}
.featured-body h3{font-size:1.375rem;color:#fff;margin-bottom:8px;font-family:var(--font-display)}
.featured-body p{font-size:.875rem;color:rgba(255,255,255,.78);line-height:1.7}
.featured-meta{margin-top:14px;font-size:.8125rem;color:var(--c-accent-soft);display:flex;gap:16px;align-items:center}
@media (max-width:767px){
  .featured-grid{grid-template-columns:1fr}
  .featured-card{min-height:260px}
}
/* ===== Stats ===== */
.stats-band{background:var(--c-primary-deep);border-radius:var(--radius-sm);padding:56px 48px;margin-top:56px;display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.stat-item{text-align:center}
.stat-number{font-family:var(--font-display);font-size:clamp(2.25rem,4vw,3.5rem);font-weight:600;color:var(--c-accent);line-height:1.1}
.stat-label{font-size:.8125rem;color:rgba(255,255,255,.6);margin-top:8px}
@media (max-width:767px){
  .stats-band{grid-template-columns:repeat(2,1fr);padding:40px 24px;gap:24px}
}
/* ===== Timeline ===== */
.timeline{position:relative;max-width:760px;margin:0 auto;padding-left:0}
.timeline::before{content:"";position:absolute;left:64px;top:0;bottom:0;width:2px;background:var(--c-primary);opacity:.2}
.timeline-item{position:relative;padding:0 0 40px 152px}
.timeline-item:last-child{padding-bottom:0}
.timeline-dot{position:absolute;left:59px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--c-accent);border:2px solid var(--c-bg);box-shadow:0 0 0 3px var(--c-accent)}
.timeline-step{position:absolute;left:0;top:0;font-family:var(--font-display);font-size:1rem;color:var(--c-accent);font-weight:600;width:64px;text-align:right;padding-right:32px}
.timeline-card{background:var(--c-surface);border:1px solid var(--c-line);border-left:2px solid transparent;border-radius:var(--radius-sm);padding:20px 24px;transition:border-color .25s,transform .25s,box-shadow .25s}
.timeline-card:hover{border-left-color:var(--c-primary);transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.timeline-card h3{font-size:1.0625rem;color:var(--c-ink);margin-bottom:6px;font-family:var(--font-display)}
.timeline-card p{font-size:.875rem;color:var(--c-ink-soft);line-height:1.7}
@media (max-width:767px){
  .timeline::before{left:12px}
  .timeline-step{display:none}
  .timeline-item{padding-left:48px}
  .timeline-dot{left:7px}
}
/* ===== FAQ ===== */
.faq-list{max-width:var(--max-copy);margin:0 auto;border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:22px 4px;font-size:1.0625rem;font-weight:500;color:var(--c-ink);cursor:pointer;transition:color .2s var(--ease);gap:16px;text-align:left;width:100%;background:none;border:none}
.faq-question:hover{color:var(--c-primary)}
.faq-icon{display:flex;align-items:center;justify-content:center;width:24px;height:24px;flex-shrink:0;position:relative;pointer-events:none}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--c-accent);transition:all .25s var(--ease)}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.open .faq-icon::after{transform:scaleY(0)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-answer-inner{padding:0 4px 22px;color:var(--c-ink-soft);font-size:.9375rem;line-height:1.8}
/* ===== CTA ===== */
.cta-section{position:relative;background:var(--c-primary-deep);overflow:hidden;padding:72px 0}
.cta-section::before{content:"半岛";position:absolute;right:-20px;bottom:-60px;font-family:var(--font-display);font-size:14rem;color:rgba(255,255,255,.03);line-height:1;pointer-events:none;letter-spacing:.05em}
.cta-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center;position:relative;z-index:2}
.cta-left h2{font-size:var(--text-h2);color:#fff;margin-bottom:18px}
.cta-left p{font-size:.9375rem;line-height:1.85;color:rgba(255,255,255,.65);margin-bottom:20px;max-width:460px}
.cta-contact{font-size:.875rem;color:rgba(255,255,255,.45);line-height:1.8}
.cta-actions{display:flex;gap:16px;margin-top:24px;flex-wrap:wrap}
.cta-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-sm);padding:36px 32px;backdrop-filter:blur(6px)}
.cta-form{display:grid;gap:14px}
.form-field{display:flex;flex-direction:column;gap:6px}
.form-label{font-size:.8125rem;color:rgba(255,255,255,.6)}
.form-input{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.18);border-radius:var(--radius-xs);padding:12px 16px;color:#fff;font-size:.9375rem;transition:border-color .2s,box-shadow .2s}
.form-input::placeholder{color:rgba(255,255,255,.35)}
.form-input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(183,154,99,.18);background:rgba(255,255,255,.08)}
.form-input option{color:var(--c-ink);background:var(--c-surface)}
textarea.form-input{resize:vertical;min-height:76px}
@media (max-width:900px){
  .cta-grid{grid-template-columns:1fr}
}
/* ===== Footer ===== */
.footer{background:var(--c-dark-bg);color:var(--c-text-on-dark);padding:64px 0 32px;margin-top:0}
.footer .container{padding:0 40px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand-name{font-family:var(--font-display);font-size:1.375rem;color:#fff;font-weight:600;margin-bottom:12px}
.footer-brand-desc{font-size:.875rem;color:rgba(255,255,255,.5);line-height:1.8}
.footer-heading{font-size:.8125rem;color:rgba(255,255,255,.7);font-weight:500;margin-bottom:14px;letter-spacing:.05em}
.footer-links{display:flex;flex-direction:column;gap:8px}
.footer-links a{font-size:.875rem;color:rgba(255,255,255,.45);transition:color .2s}
.footer-links a:hover{color:var(--c-accent)}
.footer-contact{font-size:.875rem;color:rgba(255,255,255,.45);line-height:1.9}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:28px;font-size:.8125rem;color:rgba(255,255,255,.35);flex-wrap:wrap;gap:8px}
@media (max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .container,.footer .container{padding:0 20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root {
  --c-primary: #0D4F4A;
  --c-primary-dark: #083D39;
  --c-primary-deep: #062B28;
  --c-accent: #B79A63;
  --c-accent-soft: #D9C9A3;
  --c-bg: #F4F1EB;
  --c-surface: #FFFFFF;
  --c-ink: #17201F;
  --c-ink-soft: #5B6B68;
  --c-line: #E4E0D8;
  --c-dark-bg: #0C1C1B;
  --c-text-on-dark: #EDEAE3;
  --c-success: #2F7D68;
  --c-error: #B4453C;
  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", STSong, serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --text-display: clamp(2.75rem, 6vw, 4.75rem);
  --text-h1: clamp(2.125rem, 4vw, 3.25rem);
  --text-h2: clamp(1.625rem, 2.8vw, 2.375rem);
  --text-h3: 1.375rem;
  --text-body: 1rem;
  --text-sm: 0.875rem;
  --text-label: 0.75rem;
  --space-section: clamp(4rem, 7vw, 6.5rem);
  --space-block: clamp(2rem, 4vw, 3.5rem);
  --space-card: 1.75rem;
  --sidebar-width: 264px;
  --max-content: 1200px;
  --max-copy: 720px;
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-full: 999px;
  --shadow-hover: 0 10px 30px rgba(8, 45, 42, 0.08);
  --shadow-cta: 0 8px 20px rgba(13, 79, 74, 0.18);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.85;
  background: var(--c-bg);
  color: var(--c-ink);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

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

.container {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 32px;
}

/* 按钮体系 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-xs);
  font-weight: 500;
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  border: 1px solid transparent;
  transition: all 0.3s var(--ease);
  white-space: nowrap;
}

.btn-primary {
  background: var(--c-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--c-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-cta);
}

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

.btn-accent {
  background: var(--c-accent);
  color: var(--c-ink);
}

.btn-accent:hover {
  background: var(--c-accent-soft);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(183, 154, 99, 0.28);
}

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

.btn-outline-light {
  border-color: rgba(255, 255, 255, 0.65);
  color: #fff;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  transform: translateY(-2px);
}

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

.btn:active {
  transform: translateY(0) scale(0.98);
}

/* 左侧竖向导航 */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--c-dark-bg);
  color: var(--c-text-on-dark);
  display: flex;
  flex-direction: column;
  padding: 36px 26px 28px;
  z-index: 100;
  overflow-y: auto;
  scrollbar-width: none;
}

.sidebar::-webkit-scrollbar {
  display: none;
}

.sidebar-brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-bottom: 26px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-brand-main {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--c-accent);
  line-height: 1.2;
}

.sidebar-brand-sub {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: rgba(237, 234, 227, 0.6);
}

.sidebar-nav {
  margin-top: 28px;
  flex: 1;
}

.nav-group {
  display: flex;
  flex-direction: column;
}

.nav-label {
  font-size: var(--text-label);
  letter-spacing: 0.14em;
  color: rgba(237, 234, 227, 0.4);
  margin-bottom: 10px;
  text-transform: none;
  padding-left: 14px;
}

.nav-item {
  display: block;
  padding: 7px 0 7px 14px;
  font-size: 0.9375rem;
  line-height: 1.9;
  color: rgba(237, 234, 227, 0.78);
  border-left: 2px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.nav-item:hover {
  color: var(--c-accent);
  border-left-color: rgba(183, 154, 99, 0.45);
}

.nav-item.active {
  color: var(--c-accent);
  border-left-color: var(--c-accent);
  font-weight: 500;
}

.sidebar-contact {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.8125rem;
  line-height: 1.9;
  color: rgba(237, 234, 227, 0.55);
}

.sidebar-cta {
  margin-top: 14px;
  display: block;
  text-align: center;
  background: var(--c-primary);
  color: #fff;
  padding: 12px 18px;
  border-radius: var(--radius-xs);
  font-size: 0.875rem;
  font-weight: 500;
  transition: background 0.25s var(--ease), transform 0.25s var(--ease);
}

.sidebar-cta:hover {
  background: var(--c-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-cta);
}

/* 移动端顶部导航 */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: var(--c-dark-bg);
  color: var(--c-text-on-dark);
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 150;
}

.mobile-brand {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.mobile-brand-main {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--c-accent);
}

.mobile-brand-sub {
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: rgba(237, 234, 227, 0.55);
}

.menu-toggle {
  width: 42px;
  height: 42px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: var(--radius-xs);
}

.menu-toggle:hover {
  background: rgba(255, 255, 255, 0.06);
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--c-text-on-dark);
  transition: background 0.2s var(--ease);
}

.menu-toggle:hover span {
  background: var(--c-accent);
}

.mobile-drawer {
  position: fixed;
  inset: 0;
  background: var(--c-dark-bg);
  color: var(--c-text-on-dark);
  z-index: 200;
  transform: translateX(100%);
  transition: transform 0.4s var(--ease);
  display: flex;
  flex-direction: column;
  padding: 70px 32px 40px;
  visibility: hidden;
}

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

.drawer-close {
  position: fixed;
  top: 14px;
  right: 18px;
  width: 44px;
  height: 44px;
  color: var(--c-text-on-dark);
  font-size: 1.75rem;
  line-height: 1;
  border-radius: var(--radius-xs);
}

.drawer-close:hover {
  color: var(--c-accent);
}

.drawer-brand {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--c-accent);
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.drawer-nav {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
}

.drawer-item {
  font-family: var(--font-display);
  font-size: 1.375rem;
  line-height: 2.2;
  color: rgba(237, 234, 227, 0.8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: color 0.25s var(--ease), padding-left 0.25s var(--ease);
}

.drawer-item:hover,
.drawer-item.active {
  color: var(--c-accent);
  padding-left: 8px;
}

.drawer-contact {
  margin-top: auto;
  font-size: 0.875rem;
  line-height: 2;
  color: rgba(237, 234, 227, 0.5);
}

.drawer-inner .btn {
  margin-top: 18px;
  width: 100%;
}

body.no-scroll {
  overflow: hidden;
}

/* 主内容区 */
.main-wrapper {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-wrapper > .cat-hero,
.main-wrapper > section,
.main-wrapper > .cta-bar,
.main-wrapper > .footer {
  flex-shrink: 0;
}

/* 分类页 Hero */
.cat-hero {
  position: relative;
  min-height: 380px;
  display: flex;
  align-items: flex-end;
  padding: 72px 0 64px;
  background-image: linear-gradient(100deg, rgba(6, 43, 40, 0.92), rgba(13, 79, 74, 0.58), rgba(13, 79, 74, 0.22)), url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  color: #fff;
  overflow: hidden;
}

.cat-hero-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: var(--text-label);
  letter-spacing: 0.14em;
  color: var(--c-accent-soft);
  margin-bottom: 18px;
}

.cat-hero-label::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--c-accent);
}

.cat-hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-h1);
  font-weight: 600;
  line-height: 1.15;
  margin-bottom: 16px;
}

.cat-hero-desc {
  max-width: 620px;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 28px;
}

.cat-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 32px;
}

.cat-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.meta-item {
  padding: 0 22px;
  font-size: var(--text-label);
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.72);
  position: relative;
}

.meta-item:first-child {
  padding-left: 0;
}

.meta-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 14px;
  background: rgba(255, 255, 255, 0.2);
}

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

.section-header {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 44px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: var(--text-label);
  letter-spacing: 0.12em;
  color: var(--c-accent);
  font-weight: 500;
}

.section-label::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--c-accent);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  font-weight: 600;
  line-height: 1.2;
  color: var(--c-ink);
  max-width: var(--max-copy);
}

.section-intro {
  max-width: var(--max-copy);
  color: var(--c-ink-soft);
  font-size: 1rem;
  line-height: 1.85;
}

/* 服务概览 */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 58px;
  align-items: center;
}

.split-media {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--c-line);
  box-shadow: 0 6px 24px rgba(8, 45, 42, 0.04);
}

.split-media img {
  width: 100%;
  height: 420px;
  border-radius: var(--radius-sm);
  transition: transform 0.5s var(--ease);
}

.split-media:hover img {
  transform: scale(1.02);
}

.split-content h3 {
  font-family: var(--font-display);
  font-size: var(--text-h3);
  font-weight: 600;
  margin: 20px 0 12px;
  line-height: 1.35;
}

.split-content p {
  color: var(--c-ink-soft);
  margin-bottom: 16px;
}

.feature-list {
  list-style: none;
  margin-top: 20px;
  border-top: 1px solid var(--c-line);
}

.feature-list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--c-line);
  font-size: 0.9375rem;
  color: var(--c-ink);
}

.feature-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
  flex-shrink: 0;
  transform: translateY(-1px);
}

/* 数据指标 */
.stat-section {
  background: var(--c-dark-bg);
  color: var(--c-text-on-dark);
  padding: var(--space-section) 0;
  position: relative;
  overflow: hidden;
}

.stat-section::before {
  content: 'bd半岛';
  position: absolute;
  right: -20px;
  top: 20px;
  font-family: var(--font-display);
  font-size: 9rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.025);
  line-height: 1;
  pointer-events: none;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 36px;
  margin-top: 44px;
  position: relative;
  z-index: 1;
}

.stat-item {
  text-align: left;
  padding: 8px 0;
}

.stat-number {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 4.2vw, 3.8rem);
  font-weight: 700;
  color: var(--c-accent);
  line-height: 1.1;
  display: block;
  margin-bottom: 8px;
}

.stat-number-suffix {
  font-size: 1.25rem;
  margin-left: 2px;
}

.stat-label {
  font-size: var(--text-sm);
  color: rgba(237, 234, 227, 0.6);
  letter-spacing: 0.03em;
}

/* 服务场景 */
.scenario-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-block);
}

.scenario-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.scenario-block:nth-child(even) .scenario-media {
  order: 2;
}

.scenario-block:nth-child(even) .scenario-content {
  order: 1;
}

.scenario-media {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--c-line);
}

.scenario-media img {
  width: 100%;
  height: 320px;
  border-radius: var(--radius-sm);
  transition: transform 0.5s var(--ease);
}

.scenario-media:hover img {
  transform: scale(1.03);
}

.scenario-content .badge {
  display: inline-block;
  background: #EFEDE7;
  color: var(--c-primary);
  font-size: var(--text-label);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}

.scenario-content h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 10px;
  line-height: 1.3;
}

.scenario-content p {
  color: var(--c-ink-soft);
  margin-bottom: 16px;
}

.scenario-stats {
  display: flex;
  gap: 28px;
  margin-top: 8px;
}

.scenario-stats div {
  font-size: var(--text-sm);
  color: var(--c-ink-soft);
}

.scenario-stats strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--c-primary);
}

/* 流程时间线 */
.timeline-section {
  background: var(--c-bg);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

.timeline {
  position: relative;
  margin-top: 44px;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: var(--c-primary);
  opacity: 0.16;
}

.timeline-item {
  position: relative;
  padding: 0 0 38px 22px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -29px;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c-accent);
  border: 2px solid var(--c-bg);
  box-shadow: 0 0 0 2px var(--c-accent);
}

.timeline-step {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 6px;
}

.timeline-num {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: 0.05em;
}

.timeline-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--c-ink);
}

.timeline-desc {
  color: var(--c-ink-soft);
  font-size: 0.9375rem;
  line-height: 1.75;
  max-width: 640px;
}

/* 品质保障 */
.quality-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px 44px;
  margin-top: 40px;
}

.quality-item {
  display: flex;
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--c-line);
}

.quality-num {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-accent);
  flex-shrink: 0;
  padding-top: 2px;
}

.quality-item h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--c-ink);
  margin-bottom: 6px;
}

.quality-item p {
  font-size: 0.9375rem;
  color: var(--c-ink-soft);
  line-height: 1.75;
}

.quality-banner {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 20px;
}

.quality-banner .split-media img {
  height: 340px;
}

/* FAQ */
.faq-section {
  background: var(--c-surface);
}

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

.faq-item {
  border-bottom: 1px solid var(--c-line);
}

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

.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--c-ink);
  transition: color 0.2s var(--ease);
  -webkit-tap-highlight-color: transparent;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary:hover {
  color: var(--c-primary);
}

.faq-item summary::after {
  content: '+';
  font-size: 1.375rem;
  font-weight: 400;
  color: var(--c-accent);
  flex-shrink: 0;
  transition: transform 0.3s var(--ease);
  line-height: 1;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 0 24px;
  max-width: 720px;
  color: var(--c-ink-soft);
  font-size: 0.9375rem;
  line-height: 1.85;
}

/* CTA 条 */
.cta-bar {
  background: var(--c-primary-deep);
  margin: var(--space-section) 0;
  border-radius: var(--radius-sm);
  padding: 54px 0;
  position: relative;
  overflow: hidden;
}

.cta-bar::before {
  content: 'bd半岛';
  position: absolute;
  right: -30px;
  bottom: -30px;
  font-family: var(--font-display);
  font-size: 8rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.03);
  line-height: 1;
  pointer-events: none;
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  position: relative;
  z-index: 1;
}

.cta-title {
  font-family: var(--font-display);
  font-size: 1.625rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 8px;
}

.cta-desc {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9375rem;
}

/* 页脚 */
.footer {
  background: var(--c-dark-bg);
  color: var(--c-text-on-dark);
  padding: 64px 0 32px;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr 0.9fr 1fr;
  gap: 44px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand-name {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--c-accent);
  margin-bottom: 12px;
}

.footer-brand-desc {
  font-size: 0.875rem;
  line-height: 1.8;
  color: rgba(237, 234, 227, 0.55);
  max-width: 320px;
}

.footer-heading {
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 16px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  font-size: 0.875rem;
  color: rgba(237, 234, 227, 0.5);
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

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

.footer-contact {
  font-size: 0.875rem;
  line-height: 2;
  color: rgba(237, 234, 227, 0.5);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  font-size: 0.8125rem;
  color: rgba(237, 234, 227, 0.35);
}

/* Reveal 动画 */
.reveal {
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

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

/* 响应式 */
@media (max-width: 1023px) {
  .sidebar {
    display: none;
  }

  .mobile-header {
    display: flex;
  }

  .main-wrapper {
    margin-left: 0;
    padding-top: 64px;
  }

  .split,
  .scenario-block,
  .quality-banner {
    grid-template-columns: 1fr;
  }

  .scenario-block:nth-child(even) .scenario-media,
  .scenario-block:nth-child(even) .scenario-content {
    order: unset;
  }

  .stat-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 24px;
  }

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

@media (max-width: 767px) {
  .container {
    padding: 0 20px;
  }

  .cat-hero {
    min-height: 520px;
    padding: 48px 0 40px;
  }

  .cat-hero-meta {
    gap: 12px 0;
  }

  .meta-item {
    padding: 0 14px;
  }

  .meta-item:first-child {
    padding-left: 0;
  }

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

  .section-header {
    margin-bottom: 32px;
  }

  .section-title {
    font-size: var(--text-h2);
  }

  .split-media img,
  .scenario-media img,
  .quality-banner .split-media img {
    height: 240px;
  }

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

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

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-bar {
    padding: 40px 0;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .stat-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .stat-number {
    font-size: 2rem;
  }

  .scenario-stats {
    flex-wrap: wrap;
    gap: 16px;
  }

  .timeline {
    padding-left: 22px;
  }

  .timeline-item {
    padding-left: 16px;
  }

  .timeline-item::before {
    left: -23px;
  }

  .quality-item {
    flex-direction: column;
    gap: 8px;
  }

  .cat-hero h1 {
    font-size: 2.125rem;
  }

  body {
    font-size: 0.9375rem;
  }
}

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

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

  .btn-primary:hover,
  .btn-accent:hover,
  .btn-outline-light:hover,
  .sidebar-cta:hover {
    transform: none;
  }
}

/* roulang page: category3 */
:root {
  --c-primary: #0D4F4A;
  --c-primary-dark: #083D39;
  --c-primary-deep: #062B28;
  --c-accent: #B79A63;
  --c-accent-soft: #D9C9A3;
  --c-bg: #F4F1EB;
  --c-surface: #FFFFFF;
  --c-ink: #17201F;
  --c-ink-soft: #5B6B68;
  --c-line: #E4E0D8;
  --c-dark-bg: #0C1C1B;
  --c-text-on-dark: #EDEAE3;
  --c-success: #2F7D68;
  --c-error: #B4453C;
  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", STSong, serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --text-display: clamp(2.75rem, 6vw, 4.75rem);
  --text-h1: clamp(2.125rem, 4vw, 3.25rem);
  --text-h2: clamp(1.625rem, 2.8vw, 2.375rem);
  --text-h3: 1.375rem;
  --text-body: 1rem;
  --text-sm: 0.875rem;
  --text-label: 0.75rem;
  --space-section: clamp(4.5rem, 9vw, 8.5rem);
  --space-block: clamp(2.5rem, 5vw, 4rem);
  --space-card: 1.75rem;
  --sidebar-width: 264px;
  --max-content: 1200px;
  --max-copy: 720px;
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-full: 999px;
  --shadow-hover: 0 10px 30px rgba(8, 45, 42, 0.08);
  --shadow-cta: 0 8px 20px rgba(13, 79, 74, 0.18);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--c-bg);
  color: var(--c-ink);
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }

.container {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 32px;
}

/* ===== 侧边导航 ===== */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--c-dark-bg);
  color: var(--c-text-on-dark);
  display: flex;
  flex-direction: column;
  padding: 36px 28px;
  z-index: 100;
  overflow-y: auto;
}

.sidebar-brand {
  display: flex;
  flex-direction: column;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(237, 234, 227, 0.1);
}

.brand-mark {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--c-accent-soft);
  line-height: 1.2;
}

.brand-sub {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: rgba(237, 234, 227, 0.5);
  margin-top: 4px;
}

.sidebar-nav { margin-top: 32px; flex: 1; }

.nav-group + .nav-group {
  margin-top: 28px;
  border-top: 1px solid rgba(237, 234, 227, 0.1);
  padding-top: 24px;
}

.nav-label {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: rgba(237, 234, 227, 0.4);
  margin-bottom: 10px;
  text-transform: uppercase;
}

.nav-item {
  display: block;
  padding: 6px 0 6px 20px;
  font-size: 0.9375rem;
  line-height: 2.4;
  color: rgba(237, 234, 227, 0.85);
  border-left: 2px solid transparent;
  transition: color 0.25s ease, border-color 0.25s ease;
}

.nav-item:hover { color: var(--c-accent-soft); border-left-color: rgba(183, 154, 99, 0.4); }
.nav-item.active { color: var(--c-accent-soft); border-left-color: var(--c-accent); }

.nav-contact {
  font-size: 0.8125rem;
  color: rgba(237, 234, 227, 0.55);
  line-height: 1.8;
}

.sidebar-footer {
  border-top: 1px solid rgba(237, 234, 227, 0.1);
  padding-top: 20px;
}

.btn-sidebar {
  display: block;
  text-align: center;
  background: var(--c-primary);
  color: #fff;
  padding: 12px 16px;
  border-radius: var(--radius-xs);
  font-weight: 500;
  transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.btn-sidebar:hover {
  background: #0F5E58;
  transform: translateY(-2px);
  box-shadow: var(--shadow-cta);
}

/* ===== 移动端顶部导航 ===== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: var(--c-dark-bg);
  color: var(--c-text-on-dark);
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 150;
}

.mobile-logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--c-accent-soft);
}

.mobile-menu-btn {
  background: none;
  border: 1px solid rgba(237, 234, 227, 0.25);
  color: var(--c-text-on-dark);
  border-radius: var(--radius-sm);
  width: 40px;
  height: 40px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  transition: border-color 0.2s ease;
}

.mobile-menu-btn:hover { border-color: var(--c-accent-soft); }

.mobile-drawer {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--c-dark-bg);
  z-index: 200;
  padding: 24px 28px;
  flex-direction: column;
}

.mobile-drawer.open { display: flex; }

.drawer-close {
  align-self: flex-end;
  background: none;
  border: 1px solid rgba(237, 234, 227, 0.2);
  color: var(--c-text-on-dark);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px 14px;
  border-radius: var(--radius-xs);
  transition: border-color 0.2s ease;
}

.drawer-close:hover { border-color: var(--c-accent-soft); }

.drawer-nav {
  margin: 32px 0;
}

.drawer-nav a {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-h3);
  line-height: 2.2;
  color: var(--c-text-on-dark);
  border-bottom: 1px solid rgba(237, 234, 227, 0.1);
  transition: color 0.2s ease;
}

.drawer-nav a:hover { color: var(--c-accent-soft); }
.drawer-nav a.active { color: var(--c-accent-soft); }

.drawer-contact {
  margin-top: auto;
  font-size: 0.8125rem;
  color: rgba(237, 234, 227, 0.5);
  line-height: 2;
}

.drawer-cta {
  display: block;
  text-align: center;
  background: var(--c-primary);
  color: #fff;
  padding: 14px 20px;
  border-radius: var(--radius-xs);
  margin-top: 16px;
  font-weight: 500;
  transition: background 0.25s ease, transform 0.25s ease;
}

.drawer-cta:hover { background: #0F5E58; transform: translateY(-2px); }

/* ===== 主内容壳 ===== */
.main-shell {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-content { flex: 1; }

/* ===== 页面 Hero ===== */
.page-hero {
  position: relative;
  min-height: 380px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: flex-end;
  padding: 80px 0 64px;
  color: #fff;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(6, 43, 40, 0.92), rgba(13, 79, 74, 0.6), rgba(13, 79, 74, 0.2));
}

.page-hero .container { position: relative; z-index: 1; width: 100%; }

.cat-label {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--c-accent-soft);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.cat-label::before {
  content: "";
  display: block;
  width: 28px;
  height: 1px;
  background: var(--c-accent);
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-h1);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: 0.01em;
}

.page-hero p {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 560px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 2rem;
  font-weight: 500;
  border-radius: var(--radius-xs);
  transition: all 0.25s cubic-bezier(0.22, 0.61, 0.36, 1);
  cursor: pointer;
  border: 1px solid transparent;
  font-size: 0.9375rem;
}

.btn-accent {
  background: var(--c-accent);
  color: #1A1A1A;
}

.btn-accent:hover {
  background: #C8AC77;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(183, 154, 99, 0.35);
}

.btn-outline-light {
  border-color: rgba(255, 255, 255, 0.6);
  color: #fff;
  background: transparent;
}

.btn-outline-light:hover {
  background: #fff;
  color: var(--c-primary);
}

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

.section-head { margin-bottom: 48px; max-width: var(--max-copy); }

.section-index {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--c-accent);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-index::after {
  content: "";
  display: block;
  width: 48px;
  height: 1px;
  background: var(--c-line);
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 14px;
  color: var(--c-ink);
}

.section-head p {
  color: var(--c-ink-soft);
  font-size: 1rem;
  line-height: 1.85;
}

/* ===== 时间线 ===== */
.timeline {
  position: relative;
  margin-top: 16px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--c-primary);
  transform: translateX(-1px);
}

.timeline-item {
  position: relative;
  width: calc(50% - 48px);
  margin-bottom: 36px;
}

.timeline-item:nth-child(odd) {
  margin-right: auto;
  text-align: right;
}

.timeline-item:nth-child(even) {
  margin-left: calc(50% + 48px);
}

.timeline-dot {
  position: absolute;
  top: 24px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--c-accent);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--c-accent);
}

.timeline-item:nth-child(odd) .timeline-dot { right: -55px; }
.timeline-item:nth-child(even) .timeline-dot { left: -55px; }

.timeline-card {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  padding: 24px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.timeline-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.timeline-tag {
  display: inline-block;
  background: #EFEDE7;
  color: var(--c-primary);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  padding: 3px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 10px;
}

.timeline-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.timeline-card p {
  color: var(--c-ink-soft);
  font-size: var(--text-sm);
  line-height: 1.8;
}

/* ===== 图文分栏 ===== */
.split-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.split-copy h3 {
  font-family: var(--font-display);
  font-size: var(--text-h3);
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--c-ink);
}

.split-copy > p {
  color: var(--c-ink-soft);
  margin-bottom: 16px;
}

.channel-list { margin-top: 20px; }

.channel-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--c-line);
}

.channel-list li:last-child { border-bottom: none; }

.channel-ic {
  color: var(--c-accent);
  font-weight: 600;
  flex-shrink: 0;
}

.channel-list strong {
  display: block;
  color: var(--c-ink);
  font-size: 0.9375rem;
  font-weight: 600;
}

.channel-list span {
  color: var(--c-ink-soft);
  font-size: var(--text-sm);
  line-height: 1.7;
}

.split-media img {
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-line);
  width: 100%;
  height: 340px;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.split-media:hover img { transform: scale(1.02); }

/* ===== 深色条款区 ===== */
.section-dark {
  background-color: var(--c-dark-bg);
  background-size: cover;
  background-position: center;
  position: relative;
}

.section-dark::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(12, 28, 27, 0.94);
}

.section-dark .container { position: relative; z-index: 1; }
.section-dark .section-head h2 { color: var(--c-text-on-dark); }
.section-dark .section-head p { color: rgba(237, 234, 227, 0.65); }
.section-dark .section-index { color: var(--c-accent-soft); }
.section-dark .section-index::after { background: rgba(237, 234, 227, 0.2); }

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 56px;
}

.stat-card {
  text-align: center;
  padding: 28px 16px;
  border: 1px solid rgba(237, 234, 227, 0.12);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.02);
  transition: border-color 0.3s ease, background 0.3s ease;
}

.stat-card:hover {
  border-color: rgba(183, 154, 99, 0.4);
  background: rgba(255, 255, 255, 0.05);
}

.stat-num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--c-accent-soft);
  line-height: 1.2;
}

.stat-label {
  color: rgba(237, 234, 227, 0.5);
  font-size: 0.75rem;
  margin-top: 6px;
  letter-spacing: 0.05em;
}

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

.term-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 28px 24px;
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.term-card:hover {
  border-color: rgba(183, 154, 99, 0.35);
  transform: translateY(-3px);
}

.term-card h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--c-accent-soft);
}

.term-card p {
  font-size: 0.875rem;
  color: rgba(237, 234, 227, 0.7);
  line-height: 1.8;
}

/* ===== FAQ ===== */
.faq-list { max-width: var(--max-copy); }

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

.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 4px;
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--c-ink);
  transition: color 0.2s ease;
}

.faq-q:hover { color: var(--c-primary); }

.faq-icon {
  width: 20px;
  height: 20px;
  position: relative;
  flex-shrink: 0;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  background: var(--c-primary);
  transition: transform 0.25s ease;
}

.faq-icon::before {
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  transform: translateY(-50%);
}

.faq-icon::after {
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  transform: translateX(-50%);
}

.faq-item.open .faq-icon::after { transform: translateX(-50%) scaleY(0); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-a-inner {
  padding: 0 28px 20px 4px;
  color: var(--c-ink-soft);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.faq-item.open .faq-a { max-height: 320px; }

/* ===== CTA ===== */
.cta-section {
  padding: var(--space-section) 0;
  background-color: var(--c-primary-deep);
  background-size: cover;
  background-position: center;
  position: relative;
  color: var(--c-text-on-dark);
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(6, 43, 40, 0.94);
}

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

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

.cta-left h2 {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 16px;
}

.cta-left p {
  color: rgba(237, 234, 227, 0.7);
  font-size: 0.9375rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.cta-contact {
  font-size: 0.875rem;
  color: rgba(237, 234, 227, 0.5);
  line-height: 1.8;
}

.cta-form {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 32px;
}

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

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--c-text-on-dark);
  font-size: 0.9375rem;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.form-field select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23D9C9A3' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(183, 154, 99, 0.25);
}

.form-field textarea {
  min-height: 90px;
  resize: vertical;
}

.form-field ::placeholder { color: #9DA8A5; }

.btn-submit {
  width: 100%;
  background: var(--c-accent);
  color: #1A1A1A;
  padding: 14px 24px;
  border: none;
  border-radius: var(--radius-xs);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
  font-size: 0.9375rem;
}

.btn-submit:hover {
  background: #C8AC77;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(183, 154, 99, 0.3);
}

.btn-submit:active {
  transform: translateY(0) scale(0.98);
}

.form-note {
  margin-top: 12px;
  font-size: 0.75rem;
  color: rgba(237, 234, 227, 0.4);
  text-align: center;
}

/* ===== 页脚 ===== */
.footer {
  background: var(--c-dark-bg);
  color: var(--c-text-on-dark);
  padding: 64px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(237, 234, 227, 0.1);
}

.footer-brand-name {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--c-accent-soft);
  margin-bottom: 8px;
}

.footer-brand-desc {
  font-size: 0.8125rem;
  color: rgba(237, 234, 227, 0.55);
  line-height: 1.8;
}

.footer-heading {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: rgba(237, 234, 227, 0.4);
  margin-bottom: 16px;
}

.footer-links a {
  display: block;
  font-size: 0.875rem;
  color: rgba(237, 234, 227, 0.7);
  line-height: 2.2;
  transition: color 0.2s ease;
}

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

.footer-contact {
  font-size: 0.875rem;
  color: rgba(237, 234, 227, 0.7);
  line-height: 2;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-size: 0.8125rem;
  color: rgba(237, 234, 227, 0.4);
}

/* ===== Reveal 动效 ===== */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s cubic-bezier(0.22, 0.61, 0.36, 1), transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .btn-submit, .timeline-card, .term-card { transition: none; }
  .timeline-card:hover, .term-card:hover { transform: none; box-shadow: none; }
}

/* ===== 响应式 ===== */
@media (max-width: 1023px) {
  .sidebar { display: none; }
  .mobile-header { display: flex; }
  .main-shell { margin-left: 0; }
  .main-content { padding-top: 64px; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .cta-inner, .split-block { grid-template-columns: 1fr; }
  .split-media img { height: 260px; }
  .timeline::before { left: 8px; }
  .timeline-item,
  .timeline-item:nth-child(even) {
    width: 100%;
    margin-left: 0;
    padding-left: 36px;
    padding-right: 0;
    text-align: left;
  }
  .timeline-item:nth-child(odd) { margin-right: 0; }
  .timeline-item:nth-child(odd) .timeline-dot,
  .timeline-item:nth-child(even) .timeline-dot {
    left: 2px;
    right: auto;
  }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 767px) {
  .container { padding: 0 20px; }
  .page-hero { min-height: 340px; padding: 56px 0 40px; }
  .hero-actions .btn { width: 100%; }
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .stat-num { font-size: 2rem; }
  .terms-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .cta-form { padding: 24px 20px; }
  .split-media img { height: 220px; }
}

@media (max-width: 420px) {
  .stats-row { grid-template-columns: 1fr 1fr; }
  .brand-mark { font-size: 1.5rem; }
  .page-hero h1 { font-size: 1.875rem; }
  .timeline-card { padding: 18px; }
}