/* ============================================================
   天枢智能 · 陆家嘴本地获客站 (Lujiazui Local Landing Site)
   Theme: Dark Cosmic × Oriental Gold
   设计基线：与主站 dwkj666.top 同源（同 token，不雷同）
   用途：面向「上海 / 浦东 / 陆家嘴」本地关键词的获客落地页
   ============================================================ */

/* --- 1. 设计 Token（改品牌只改这里） --- */
:root {
  /* 背景层级 */
  --bg-primary: #07070f;
  --bg-secondary: #0d0d1a;
  --bg-tertiary: #141428;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);

  /* 主色：东方金（主站同源） */
  --gold: #D4A853;
  --gold-light: #E8C86A;
  --gold-dim: #A8883E;

  /* 强调色：星青 */
  --cyan: #4FC3F7;
  --cyan-dim: #2A8BB5;

  /* 文字（对比度已核：深底上 ≥ 4.5:1） */
  --text-primary: #F0F0F5;
  --text-secondary: #A8A8C0;
  --text-muted: #686880;

  /* 线条与阴影 */
  --border-color: rgba(212, 168, 83, 0.15);
  --border-glow: rgba(212, 168, 83, 0.3);
  --shadow-gold: rgba(212, 168, 83, 0.08);
  --shadow-cyan: rgba(79, 195, 247, 0.08);

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --transition: cubic-bezier(0.25, 0.46, 0.45, 0.94);

  /* 字体：本地栈优先，不依赖任何外部字体 CDN（防被墙/离线可用）
     如需品牌字体，可在 <head> 引入加速字体服务后把 'Fraunces' 放最前 */
  --font-serif: 'Fraunces', 'Source Han Serif SC', 'Noto Serif SC', 'Songti SC', Georgia, serif;
  --font-sans: 'DM Sans', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, system-ui, sans-serif;

  --container: 1200px;
}

/* --- 2. Reset & Base --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

/* scroll-padding-top：导航栏是 position:fixed，实测高度 76.3px（桌面与移动端一致，
   .nav.scrolled 状态下缩为约 60px）。若不设此值，点击锚点后小节标题会被导航栏盖住
   —— 实测未设时 scroll-padding-top 的计算值为 auto(0)，正好遮挡 76px 内容。
   88px = 76.3px 导航高度 + 约 12px 呼吸空间。该值同时作用于原生 #hash 跳转与
   app.js 中的 scrollIntoView —— 两者都遵循滚动容器的 scroll-padding。 */
html { scroll-behavior: smooth; scroll-padding-top: 88px; font-size: 16px; -webkit-text-size-adjust: 100%; }

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

/* 星野背景（主站视觉血脉） */
.starfield {
  position: fixed; inset: 0;
  z-index: 0; pointer-events: none; overflow: hidden;
}
.starfield::before {
  content: ''; position: absolute; top: 0; left: 0;
  width: 200%; height: 200%;
  background-image:
    radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,.55), transparent),
    radial-gradient(1px 1px at 22% 42%, rgba(255,255,255,.35), transparent),
    radial-gradient(1.5px 1.5px at 32% 12%, rgba(255,255,255,.45), transparent),
    radial-gradient(1px 1px at 42% 62%, rgba(255,255,255,.28), transparent),
    radial-gradient(1px 1px at 52% 32%, rgba(212,168,83,.45), transparent),
    radial-gradient(1.5px 1.5px at 62% 82%, rgba(255,255,255,.45), transparent),
    radial-gradient(1px 1px at 72% 52%, rgba(255,255,255,.3), transparent),
    radial-gradient(1px 1px at 82% 22%, rgba(212,168,83,.35), transparent),
    radial-gradient(1.5px 1.5px at 92% 72%, rgba(255,255,255,.4), transparent),
    radial-gradient(1px 1px at 16% 88%, rgba(255,255,255,.3), transparent),
    radial-gradient(1.5px 1.5px at 36% 18%, rgba(79,195,247,.32), transparent),
    radial-gradient(1px 1px at 66% 8%, rgba(212,168,83,.3), transparent),
    radial-gradient(1px 1px at 96% 92%, rgba(79,195,247,.3), transparent);
  background-size: 220px 220px;
  animation: starDrift 80s linear infinite;
  opacity: .65;
}
.starfield::after {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 22% 18%, rgba(79,195,247,.05) 0%, transparent 60%),
    radial-gradient(ellipse 50% 45% at 82% 30%, rgba(212,168,83,.045) 0%, transparent 60%);
}
@keyframes starDrift { from { transform: translate(0,0); } to { transform: translate(-50%,-50%); } }

/* 颗粒纹理（提升质感，避免纯色平面感） */
.grain {
  position: fixed; inset: 0; z-index: 1; pointer-events: none; opacity: .028;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 256px 256px;
}

/* --- 3. Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -.02em;
  color: var(--text-primary);
}
h1 { font-size: clamp(2.1rem, 5vw, 4rem); }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.9rem); }
h3 { font-size: clamp(1.2rem, 2.2vw, 1.6rem); }
h4 { font-size: clamp(1.05rem, 1.8vw, 1.25rem); }

p { font-size: 1rem; color: var(--text-secondary); line-height: 1.85; }
a { color: var(--gold); text-decoration: none; transition: color .3s var(--transition); }
a:hover { color: var(--gold-light); }
strong { color: var(--text-primary); font-weight: 600; }
::selection { background: rgba(212,168,83,.28); color: #fff; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 2px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 2000;
  background: var(--gold); color: #07070f; padding: 10px 18px; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* --- 4. Layout --- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}
.section { padding: 110px 0; position: relative; z-index: 2; }
.section-alt { background: var(--bg-secondary); }
.section-label {
  display: inline-block;
  font-size: .72rem; font-weight: 600; letter-spacing: 3px; text-transform: uppercase;
  color: var(--gold); margin-bottom: 14px;
}
.section-label::before { content: '◆ '; font-size: .6rem; }
.section-title { margin-bottom: 14px; }
.section-subtitle { font-size: 1.05rem; color: var(--text-secondary); max-width: 680px; }
.center { text-align: center; }
.center .section-subtitle { margin: 0 auto; }
.center-divider { margin: 22px auto 40px; }

.section-divider {
  width: 40px; height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
  margin: 20px 0 32px;
}

/* --- 5. Navigation --- */
.nav {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  padding: 18px 0; transition: all .4s var(--transition);
}
.nav.scrolled {
  background: rgba(7,7,15,.94);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(212,168,83,.08);
  padding: 10px 0;
}
.nav .container { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.nav-brand { display: flex; align-items: center; gap: 12px; color: var(--text-primary); }
.nav-brand .brand-icon {
  width: 36px; height: 36px; min-width: 36px;
  border: 1.5px solid var(--gold); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; color: var(--gold); position: relative;
}
.nav-brand .brand-text { display: flex; flex-direction: column; }
.nav-brand .brand-name {
  font-family: var(--font-serif); font-size: 1.25rem; letter-spacing: -.01em; line-height: 1.2;
}
.nav-brand .brand-sub {
  font-size: .6rem; color: var(--text-muted); letter-spacing: 2px; text-transform: uppercase;
}
.nav-links { display: flex; align-items: center; gap: 28px; list-style: none; }
.nav-links a {
  font-size: .85rem; color: var(--text-secondary); position: relative; padding: 4px 0;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 1px;
  background: var(--gold); transition: width .3s var(--transition);
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--gold); }
.nav-links a:hover::after, .nav-links a[aria-current="page"]::after { width: 100%; }
.nav-lang { display: flex; gap: 4px; margin-left: 6px; }
.nav-lang a {
  font-size: .68rem; letter-spacing: 1px; text-transform: uppercase;
  padding: 4px 10px; border: 1px solid rgba(255,255,255,.1); border-radius: 4px;
}
.nav-lang a.active { border-color: var(--gold); color: var(--gold); background: rgba(212,168,83,.08); }
.nav-toggle {
  display: none; background: none; border: none; color: var(--text-primary);
  font-size: 1.5rem; cursor: pointer; padding: 4px 8px; line-height: 1;
}

/* --- 6. Buttons --- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-sans); font-size: .87rem; font-weight: 500; letter-spacing: .3px;
  padding: 14px 30px; border-radius: 100px; cursor: pointer; border: none;
  transition: all .4s var(--transition); text-decoration: none;
}
.btn-primary { background: linear-gradient(135deg, var(--gold), var(--gold-light)); color: #07070f; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 34px rgba(212,168,83,.25); color: #07070f; }
.btn-secondary { background: transparent; color: var(--text-primary); border: 1px solid rgba(255,255,255,.15); }
.btn-secondary:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--gold); border: 1px solid var(--gold); }
.btn-outline:hover { background: rgba(212,168,83,.1); transform: translateY(-2px); }
.btn-sm { padding: 10px 22px; font-size: .8rem; }

/* --- 7. Hero --- */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; overflow: hidden; padding: 130px 0 80px;
}
.hero .container {
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 70px; align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .7rem; font-weight: 600; letter-spacing: 2px; text-transform: uppercase;
  color: var(--gold); border: 1px solid rgba(212,168,83,.2);
  padding: 6px 16px; border-radius: 100px; margin-bottom: 28px;
  background: rgba(212,168,83,.05);
}
.hero-badge .dot {
  width: 6px; height: 6px; background: var(--gold); border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%,100% { opacity: 1; transform: scale(1); }
  50% { opacity: .4; transform: scale(.8); }
}
.hero h1 { margin-bottom: 22px; }
.hero h1 .highlight {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 50%, var(--gold) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero .lede { font-size: 1.08rem; margin-bottom: 34px; max-width: 560px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 26px; }
.hero-local {
  font-size: .82rem; color: var(--text-muted); display: flex; align-items: center;
  gap: 10px; flex-wrap: wrap;
}
.hero-local .sep { color: var(--gold-dim); }

/* Hero 视觉：轨道环（主站同源语汇） */
.hero-visual { position: relative; display: flex; align-items: center; justify-content: center; min-height: 380px; }
.orbit-ring {
  position: absolute; border: 1px solid rgba(212,168,83,.1); border-radius: 50%;
  animation: orbit-spin 24s linear infinite;
}
.orbit-ring:nth-child(1) { width: 260px; height: 260px; border-color: rgba(212,168,83,.09); }
.orbit-ring:nth-child(2) { width: 350px; height: 350px; border-color: rgba(79,195,247,.07); animation-duration: 34s; animation-direction: reverse; }
.orbit-ring:nth-child(3) { width: 440px; height: 440px; border-color: rgba(212,168,83,.045); animation-duration: 46s; }
@keyframes orbit-spin { from { transform: rotate(0); } to { transform: rotate(360deg); } }
.orbit-dot {
  position: absolute; width: 5px; height: 5px; border-radius: 50%;
  background: var(--gold); box-shadow: 0 0 8px var(--gold);
}
.orbit-dot.d1 { top: -2px; left: 50%; }
.orbit-dot.d2 { bottom: 12%; right: 6%; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }
.center-glow {
  width: 130px; height: 130px; border-radius: 50%; position: relative;
  display: flex; align-items: center; justify-content: center;
  background: radial-gradient(circle, rgba(212,168,83,.16) 0%, transparent 70%);
}
.center-glow::before {
  content: ''; position: absolute; width: 62px; height: 62px; border-radius: 50%;
  background: radial-gradient(circle, rgba(212,168,83,.32), transparent);
  animation: center-pulse 3s ease-in-out infinite;
}
.center-glow .glyph { font-size: 1.6rem; color: var(--gold); z-index: 1; position: relative; }
@keyframes center-pulse {
  0%,100% { transform: scale(1); opacity: .5; }
  50% { transform: scale(1.45); opacity: .18; }
}
/* 环绕文字标签：把本地关键词做成视觉元素 */
.orbit-label {
  position: absolute; font-size: .6rem; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--text-muted); white-space: nowrap;
}
.orbit-label.l1 { top: 8%; left: 50%; transform: translateX(-50%); }
.orbit-label.l2 { bottom: 6%; left: 50%; transform: translateX(-50%); }
.orbit-label.l3 { top: 50%; left: -4%; transform: translateY(-50%); }
.orbit-label.l4 { top: 50%; right: -4%; transform: translateY(-50%); }

/* --- 8. Trust strip（信任要素条） --- */
.trust-strip {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px;
  padding: 34px 0; border-top: 1px solid rgba(255,255,255,.06);
  border-bottom: 1px solid rgba(255,255,255,.06);
  margin-top: 10px; position: relative; z-index: 2;
}
.trust-item { text-align: center; padding: 0 8px; }
.trust-item .t-num {
  font-family: var(--font-serif); font-size: 1.9rem; color: var(--text-primary);
  letter-spacing: -.02em; line-height: 1.2;
}
.trust-item .t-num .suffix { font-size: 1rem; color: var(--gold); }
.trust-item .t-label { font-size: .76rem; color: var(--text-muted); margin-top: 4px; }

/* --- 9. Cards / Grids --- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid-gap-lg { gap: 34px; }
.mt-lg { margin-top: 56px; }
.mt-md { margin-top: 34px; }

.card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-md); padding: 36px 30px;
  transition: all .4s var(--transition); position: relative; overflow: hidden;
}
.card::before {
  content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  transform: translateX(-100%); transition: transform .6s var(--transition);
}
.card:hover { background: var(--bg-card-hover); border-color: rgba(212,168,83,.25); transform: translateY(-4px); }
.card:hover::before { transform: translateX(100%); }
.card .icon {
  width: 48px; height: 48px; border-radius: 12px; background: rgba(212,168,83,.08);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; margin-bottom: 20px;
}
.card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.card p { font-size: .9rem; color: var(--text-muted); }
.card .card-foot { margin-top: 16px; font-size: .78rem; color: var(--gold-dim); letter-spacing: .5px; }

/* 答案优先块（GEO 关键：AI 抽取友好） */
.answer-box {
  background: rgba(79,195,247,.04); border-left: 2px solid var(--cyan);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 18px 22px; margin: 22px 0;
}
.answer-box p { font-size: .92rem; color: var(--text-secondary); }
.answer-box .ab-label {
  display: block; font-size: .65rem; letter-spacing: 2px; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 6px; font-weight: 600;
}

/* --- 10. 价格档位 --- */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.price-card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-md); padding: 36px 30px;
  display: flex; flex-direction: column; transition: all .4s var(--transition);
}
.price-card:hover { border-color: rgba(212,168,83,.28); transform: translateY(-4px); }
.price-card.featured { border-color: rgba(212,168,83,.4); background: rgba(212,168,83,.04); }
.price-card .pc-tag {
  font-size: .66rem; letter-spacing: 2px; text-transform: uppercase;
  color: var(--gold); margin-bottom: 10px;
}
.price-card h3 { font-size: 1.25rem; margin-bottom: 12px; }
.price-card .price {
  font-family: var(--font-serif); font-size: 1.9rem; color: var(--text-primary);
  margin-bottom: 6px; letter-spacing: -.02em;
}
.price-card .price-note { font-size: .78rem; color: var(--text-muted); margin-bottom: 20px; }
.price-card ul { list-style: none; margin-bottom: 26px; flex: 1; }
.price-card ul li {
  font-size: .87rem; color: var(--text-secondary); padding-left: 20px;
  position: relative; margin-bottom: 10px; line-height: 1.6;
}
.price-card ul li::before { content: '—'; position: absolute; left: 0; color: var(--gold-dim); }

/* --- 11. 流程时间轴 --- */
.timeline { position: relative; padding-left: 42px; margin-top: 52px; }
.timeline::before {
  content: ''; position: absolute; left: 15px; top: 6px; width: 1px; height: calc(100% - 20px);
  background: linear-gradient(to bottom, var(--gold-dim), transparent);
}
.timeline-item { position: relative; margin-bottom: 44px; }
.timeline-item::before {
  content: '◆'; position: absolute; left: -32px; top: 3px; font-size: .6rem; color: var(--gold);
}
.timeline-item .step {
  font-size: .64rem; font-weight: 600; letter-spacing: 2px; text-transform: uppercase;
  color: var(--gold-dim); margin-bottom: 4px;
}
.timeline-item h4, .timeline-item h3 { margin-bottom: 8px; }
.timeline-item p { font-size: .88rem; color: var(--text-muted); max-width: 640px; }

/* --- 12. 对照表 --- */
.table-wrap { overflow-x: auto; margin-top: 40px; }
.comparison-table { width: 100%; border-collapse: collapse; font-size: .85rem; min-width: 620px; }
.comparison-table th, .comparison-table td {
  padding: 15px 18px; border-bottom: 1px solid rgba(255,255,255,.06); text-align: left;
  vertical-align: top;
}
.comparison-table th {
  font-size: .68rem; font-weight: 600; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--text-muted); border-bottom: 1px solid var(--border-color);
}
.comparison-table td { color: var(--text-secondary); }
.comparison-table td:first-child { color: var(--text-primary); font-weight: 500; }
.comparison-table td:last-child { color: var(--gold); }

/* --- 13. 案例卡 --- */
.case-card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-md); overflow: hidden; transition: all .4s var(--transition);
}
.case-card:hover { border-color: rgba(212,168,83,.2); transform: translateY(-4px); }
.case-card .case-head {
  height: 150px; display: flex; align-items: center; justify-content: center;
  font-size: 2.4rem; position: relative; overflow: hidden;
  background: linear-gradient(135deg, rgba(212,168,83,.05), rgba(79,195,247,.05));
}
.case-card .case-head::after {
  content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-dim), transparent);
}
.case-card .case-body { padding: 26px; }
.case-card .case-tag {
  display: inline-block; font-size: .64rem; font-weight: 600; letter-spacing: 1.5px;
  text-transform: uppercase; color: var(--gold); margin-bottom: 8px;
}
.case-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.case-card p { font-size: .86rem; color: var(--text-muted); }
.case-card dl { margin-top: 16px; font-size: .8rem; }
.case-card dt { color: var(--text-muted); font-size: .66rem; letter-spacing: 1.5px; text-transform: uppercase; margin-top: 10px; }
.case-card dd { color: var(--text-secondary); }

/* --- 14. 团队卡 --- */
.team-card {
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--radius-md); padding: 28px 22px; text-align: center;
  transition: all .4s var(--transition);
}
.team-card:hover { border-color: rgba(212,168,83,.25); transform: translateY(-4px); background: var(--bg-card-hover); }
.team-card .avatar-lg {
  width: 60px; height: 60px; border-radius: 50%; margin: 0 auto 14px;
  display: flex; align-items: center; justify-content: center; font-size: 1.6rem;
  background: linear-gradient(135deg, rgba(212,168,83,.15), rgba(79,195,247,.15));
  border: 1px solid rgba(212,168,83,.15);
}
.team-card .member-name { font-family: var(--font-serif); font-size: 1.05rem; margin-bottom: 3px; }
.team-card .member-role-cn { font-size: .74rem; color: var(--gold); margin-bottom: 2px; }
.team-card .member-role-en {
  font-size: .62rem; color: var(--text-muted); letter-spacing: 1px;
  text-transform: uppercase; margin-bottom: 12px;
}
.team-card .member-desc { font-size: .78rem; color: var(--text-muted); line-height: 1.65; text-align: left; }

/* --- 15. FAQ 手风琴（details/summary：无 JS 也可用，内容始终在 DOM 中可被爬取） --- */
.faq-list { margin-top: 44px; max-width: 880px; }
.faq-item {
  border-bottom: 1px solid rgba(255,255,255,.07);
  padding: 4px 0;
}
.faq-item summary {
  cursor: pointer; list-style: none; padding: 22px 40px 22px 0; position: relative;
  font-family: var(--font-serif); font-size: 1.08rem; color: var(--text-primary);
  transition: color .3s var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+'; position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  color: var(--gold); font-size: 1.4rem; font-family: var(--font-sans); line-height: 1;
  transition: transform .3s var(--transition);
}
.faq-item[open] summary { color: var(--gold); }
.faq-item[open] summary::after { content: '−'; }
.faq-item summary:hover { color: var(--gold); }
.faq-answer { padding: 0 40px 24px 0; }
.faq-answer p { font-size: .92rem; color: var(--text-secondary); }
.faq-answer p + p { margin-top: 12px; }
.faq-answer ul { list-style: none; margin-top: 10px; }
.faq-answer ul li {
  font-size: .9rem; color: var(--text-secondary); padding-left: 18px;
  position: relative; margin-bottom: 8px;
}
.faq-answer ul li::before { content: '—'; position: absolute; left: 0; color: var(--gold-dim); }

/* --- 16. 联系与表单 --- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; margin-top: 52px; align-items: start; }
.contact-info-list { list-style: none; }
.contact-info-list li { display: flex; gap: 16px; margin-bottom: 26px; align-items: flex-start; }
.contact-info-list .ci-icon {
  width: 44px; height: 44px; min-width: 44px; border-radius: 12px;
  background: rgba(212,168,83,.08); border: 1px solid var(--border-color);
  display: flex; align-items: center; justify-content: center; font-size: 1rem;
}
.contact-info-list .ci-label {
  font-size: .66rem; color: var(--text-muted); letter-spacing: 1.5px;
  text-transform: uppercase; margin-bottom: 3px;
}
.contact-info-list .ci-value { font-size: .95rem; color: var(--text-primary); }
.contact-info-list .ci-value a { color: var(--text-primary); }
.contact-info-list .ci-value a:hover { color: var(--gold); }
.contact-info-list .ci-hint { font-size: .76rem; color: var(--text-muted); margin-top: 2px; }

.contact-form { display: flex; flex-direction: column; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: .78rem; font-weight: 500; color: var(--text-secondary); letter-spacing: .5px; }
.form-group .req { color: var(--gold); }
.form-group input, .form-group textarea, .form-group select {
  font-family: var(--font-sans); font-size: .9rem; padding: 13px 15px;
  background: var(--bg-tertiary); border: 1px solid var(--border-color);
  border-radius: var(--radius-sm); color: var(--text-primary); outline: none;
  transition: border-color .3s var(--transition), box-shadow .3s var(--transition);
  width: 100%;
}
.form-group textarea { min-height: 118px; resize: vertical; }
.form-group select { cursor: pointer; }
.form-group select option { background: var(--bg-primary); color: var(--text-primary); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--gold); box-shadow: 0 0 0 3px rgba(212,168,83,.08);
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }
.form-consent { display: flex; gap: 10px; align-items: flex-start; font-size: .78rem; color: var(--text-muted); }
.form-consent input { width: auto; margin-top: 3px; accent-color: var(--gold); }
.form-hint { font-size: .76rem; color: var(--text-muted); }
.form-status {
  font-size: .82rem; padding: 12px 16px; border-radius: var(--radius-sm); display: none;
}
.form-status.show { display: block; }
.form-status.ok { background: rgba(79,195,247,.08); border: 1px solid rgba(79,195,247,.25); color: var(--cyan); }
.form-status.err { background: rgba(224,122,95,.08); border: 1px solid rgba(224,122,95,.3); color: #E07A5F; }
.hp-field { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; }

/* --- 17. CTA 段 --- */
.cta-band {
  text-align: center; padding: 96px 0; position: relative; overflow: hidden;
  background: var(--bg-secondary);
}
.cta-band::before {
  content: ''; position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  width: 620px; height: 620px; pointer-events: none;
  background: radial-gradient(circle, rgba(212,168,83,.035) 0%, transparent 70%);
}
.cta-band h2 { margin-bottom: 14px; }
.cta-band p { max-width: 560px; margin: 0 auto 34px; }
.cta-band .hero-actions { justify-content: center; margin-bottom: 0; }

/* --- 18. 页脚 --- */
footer {
  border-top: 1px solid rgba(255,255,255,.05); padding: 52px 0 32px;
  background: var(--bg-primary); position: relative; z-index: 2;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 44px; margin-bottom: 40px; }
.footer-brand .brand-line {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-serif); font-size: 1.2rem; margin-bottom: 12px;
}
.footer-brand .brand-line .glyph { color: var(--gold); }
.footer-brand p { font-size: .84rem; color: var(--text-muted); max-width: 330px; }
.footer-brand .icp { font-size: .74rem; color: var(--text-muted); margin-top: 16px; }
.footer-brand .icp a { color: var(--text-muted); }
.footer-brand .icp a:hover { color: var(--gold); }
/* 页脚栏目标题：h3 与 h4 都支持（避免 h2→h4 跳级，同时兼容旧写法） */
.footer-col h4, .footer-col h3 {
  font-family: var(--font-sans); font-size: .72rem; font-weight: 600; letter-spacing: 2px;
  text-transform: uppercase; color: var(--text-secondary); margin-bottom: 18px;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a, .footer-col ul span { font-size: .84rem; color: var(--text-muted); }
.footer-col ul a:hover { color: var(--gold); }
.footer-col .ext::after { content: ' ↗'; font-size: .7rem; color: var(--gold-dim); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.05); padding-top: 22px;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 14px;
}
.footer-bottom p, .footer-bottom a { font-size: .74rem; color: var(--text-muted); }
.footer-bottom a:hover { color: var(--gold); }

/* --- 19. 浮动联系入口 + Toast --- */
.fab-wrap {
  position: fixed; right: 20px; bottom: 20px; z-index: 900;
  display: flex; flex-direction: column; gap: 10px; align-items: flex-end;
}
.fab {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(20,20,40,.92); border: 1px solid var(--border-color);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  color: var(--text-primary); font-size: .8rem; padding: 11px 18px;
  border-radius: 100px; transition: all .3s var(--transition); cursor: pointer;
}
.fab:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); }
.fab.primary { background: linear-gradient(135deg, var(--gold), var(--gold-light)); color: #07070f; border: none; font-weight: 500; }
.fab.primary:hover { color: #07070f; box-shadow: 0 8px 26px rgba(212,168,83,.3); }

.toast {
  position: fixed; left: 50%; bottom: 34px; transform: translate(-50%, 20px);
  background: rgba(20,20,40,.97); border: 1px solid var(--border-color);
  color: var(--text-primary); font-size: .84rem; padding: 13px 22px;
  border-radius: 100px; opacity: 0; pointer-events: none;
  transition: all .35s var(--transition); z-index: 1200;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* --- 20. 内页头 + 面包屑 --- */
.page-header { padding: 170px 0 70px; text-align: center; position: relative; z-index: 2; }
.page-header p { max-width: 680px; margin: 16px auto 0; }
.breadcrumb {
  display: flex; justify-content: center; gap: 8px; flex-wrap: wrap;
  font-size: .78rem; color: var(--text-muted); margin-bottom: 16px;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb span { color: var(--text-secondary); }
.breadcrumb .sep { color: var(--gold-dim); }

/* --- 21. 内容块 --- */
.content-block { margin-bottom: 40px; }
.content-block h3 { margin-bottom: 14px; font-size: 1.35rem; }
.content-block p, .content-block li { font-size: .93rem; color: var(--text-secondary); line-height: 1.85; margin-bottom: 12px; }
.content-block ul { list-style: none; }
.content-block ul li { padding-left: 20px; position: relative; }
.content-block ul li::before { content: '—'; position: absolute; left: 0; color: var(--gold-dim); }
.content-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 52px; align-items: start; }

/* --- 22. 入场动画（纯 CSS，结构上不可能隐藏正文） ---
   设计原则：**动画只碰 transform，绝不碰 opacity**。
   原因：本交付曾用「JS + IntersectionObserver 加 .visible 才显示」的方案，
   它把正文可见性绑定在 JS 执行、观察器触发与滚动行为上 —— 任何一环失效，
   页面就变成「只有导航和首屏、下面全空」。对一个要被抓取与阅读的站点，
   这是不可接受的设计缺陷（真浏览器实测可复现，静态检查测不出来）。
   现在的行为：正文默认可见；若浏览器支持动画，只会有一段轻微上移，
   无论动画是否执行、是否被禁用，文字始终可读。 */
.fade-in { opacity: 1; transform: none; }
@keyframes ts-rise { from { transform: translateY(14px); } to { transform: none; } }
@media (prefers-reduced-motion: no-preference) {
  .fade-in { animation: ts-rise .6s cubic-bezier(.25, .46, .45, .94) both; }
  .delay-1 { animation-delay: .08s; }
  .delay-2 { animation-delay: .16s; }
  .delay-3 { animation-delay: .24s; }
  .delay-4 { animation-delay: .32s; }
  .delay-5 { animation-delay: .4s; }
}
.delay-1 { transition-delay: .08s; } .delay-2 { transition-delay: .16s; }
.delay-3 { transition-delay: .24s; } .delay-4 { transition-delay: .32s; }
.delay-5 { transition-delay: .4s; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .fade-in { opacity: 1 !important; transform: none !important; animation: none !important; }
}

/* --- 23. 响应式 --- */
@media (max-width: 1024px) {
  .hero .container { grid-template-columns: 1fr; gap: 30px; }
  .hero-visual { display: none; }
  .hero .lede { max-width: none; }
  .trust-strip { grid-template-columns: repeat(3, 1fr); gap: 24px 10px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .price-grid { grid-template-columns: 1fr; }
  .content-grid { grid-template-columns: 1fr; gap: 34px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
}
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .nav-links.open {
    display: flex; flex-direction: column; align-items: flex-start;
    position: absolute; top: 100%; left: 0; width: 100%;
    background: rgba(7,7,15,.98); backdrop-filter: blur(20px);
    padding: 24px; gap: 16px; border-bottom: 1px solid rgba(212,168,83,.1);
  }
  .nav-toggle { display: block; }
  .section { padding: 76px 0; }
  .page-header { padding: 132px 0 50px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .trust-strip { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .timeline { padding-left: 32px; }
  .timeline-item::before { left: -25px; }
  .fab-wrap { right: 14px; bottom: 14px; }
  .fab { font-size: .76rem; padding: 10px 15px; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  h1 { font-size: 1.85rem; }
  h2 { font-size: 1.45rem; }
  .trust-strip { grid-template-columns: 1fr 1fr; gap: 20px 8px; }
  .card, .price-card { padding: 28px 22px; }
}

/* 打印（商务沟通时把页面存 PDF 也不崩） */
@media print {
  .starfield, .grain, .nav, .fab-wrap, .toast, .hero-visual { display: none !important; }
  body { background: #fff; color: #111; }
  .card, .price-card, .case-card, .team-card { border-color: #ddd; background: #fff; }
  h1, h2, h3, h4, p, li, td, th { color: #111 !important; }
}