/* =========================================================
   site.css —— 永康改个车 / GCG Car Studio 前台设计体系
   设计语言：高端科技风（深色 + 蓝青渐变 + 玻璃拟态 + 量子金点缀）
   ---------------------------------------------------------
   目录
   01 设计令牌（CSS Variables）
   02 基础重置与排版
   03 通用容器 / 栅格 / 区块
   04 按钮与文本链
   05 顶部导航（磨砂 / 汉堡）
   06 页脚
   07 Hero
   08 面包屑与内页头部
   09 区块标题
   10 玻璃卡片族（矩阵/王牌/功能区/资质/荣誉/联系卡…）
   11 标签 / 筛选 chip / 专题 chip
   12 案例卡 / 文章卡
   13 FAQ / 问答手风琴 / GEO 分组
   14 服务列表（折叠项）
   15 数据条与数字
   16 CTA 大区
   17 表单与成功提示
   18 占位图（.ph CSS 渐变占位卡）
   19 富文本文章排版
   20 错误页
   21 动效（滚动淡入 / 微光 / reduced-motion）
   22 响应式断点
   ========================================================= */

/* ============ 01 设计令牌 ============ */
:root {
  /* 深色科技基调：底色分层 */
  --bg-0: #0B1017;
  --bg-1: #101722;
  --bg-2: #0E1522;
  --bg-3: #131c2b;

  /* 主强调渐变 #3E7BFA → #38E1FF */
  --brand-a: #3E7BFA;
  --brand-b: #38E1FF;
  --grad-main: linear-gradient(135deg, #3E7BFA 0%, #38E1FF 100%);
  --grad-soft: linear-gradient(135deg, rgba(62, 123, 250, 0.16), rgba(56, 225, 255, 0.10));

  /* 文字层级 */
  --text-1: #F5F7FA;
  --text-2: #AAB4C5;
  --text-3: #6B7A90;

  /* 量子金：仅星级 / 荣誉 / 数字亮点 */
  --gold: #F2B84B;

  /* 描边与玻璃 */
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --glass: rgba(255, 255, 255, 0.035);
  --glass-hi: rgba(255, 255, 255, 0.07);

  /* 圆角与间距（8pt 栅格） */
  --r-lg: 20px;
  --r-md: 16px;
  --r-sm: 10px;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;
  --space-6: 64px;

  /* 字体栈：中文黑体系，大数字用等宽/科技体 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
  --font-num: ui-monospace, "SF Mono", "Cascadia Mono", "JetBrains Mono",
    Consolas, Menlo, "Courier New", monospace;

  /* 阴影 */
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 42px rgba(62, 123, 250, 0.22);

  --header-h: 72px;
}

/* ============ 02 基础重置与排版 ============ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  color: var(--text-2);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  background-color: var(--bg-0);
  /* 背景网格/光斑层：径向光斑 + 底部渐变，整页底色分层 */
  background-image:
    radial-gradient(980px 460px at 88% -120px, rgba(62, 123, 250, 0.16), transparent 62%),
    radial-gradient(760px 420px at -6% 26%, rgba(56, 225, 255, 0.07), transparent 60%),
    linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 46%, var(--bg-0) 100%);
  background-repeat: no-repeat;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.5em;
  color: var(--text-1);
  font-weight: 700;
  line-height: 1.35;
  text-wrap: balance;
}

p { margin: 0 0 1em; }

a {
  color: var(--brand-b);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover { color: #7fe3ff; }

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

ul, ol { margin: 0; padding: 0; list-style: none; }

dl { margin: 0; }
dt { font-weight: 600; color: var(--text-1); }
dd { margin: 0; }

em { font-style: normal; }

button { font-family: inherit; }

code { font-family: var(--font-num); }

/* 跳过导航（可访问性） */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  padding: 10px 18px;
  background: var(--grad-main);
  color: #fff;
  border-radius: 0 0 10px 0;
}
.skip-link:focus { left: 0; color: #fff; }

/* ============ 03 通用容器 / 栅格 / 区块 ============ */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.narrow { max-width: 860px; }

.section {
  padding: clamp(64px, 9vw, 100px) 0;
  position: relative;
}

.section-alt {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.018), rgba(255, 255, 255, 0.012)),
    var(--bg-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-cta { margin-top: var(--space-5); }
.section-cta.center { text-align: center; }
.section-cta .btn { margin: var(--space-1) var(--space-1) 0 0; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-3); }

/* 通用玻璃卡片底 */
.glass {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* ============ 04 按钮与文本链 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-1);
  background: transparent;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
  position: relative;
  overflow: hidden;
}
.btn:active { transform: translateY(1px); }

/* 主按钮：每屏主渐变 ≤ 1 处，按钮用微光而非大面积渐变 */
.btn-primary {
  background: var(--grad-main);
  color: #fff;
  box-shadow: 0 10px 28px rgba(62, 123, 250, 0.32);
}
.btn-primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(56, 225, 255, 0.36);
}
.btn-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 40%, rgba(255, 255, 255, 0.32) 50%, transparent 60%);
  transform: translateX(-120%);
  transition: transform 0.6s ease;
}
.btn-primary:hover::after { transform: translateX(120%); }

/* 幽灵按钮：玻璃描边，悬停微光 */
.btn-ghost {
  color: var(--text-1);
  border-color: var(--line-strong);
  background: var(--glass);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  color: #fff;
  border-color: rgba(56, 225, 255, 0.55);
  background: var(--glass-hi);
  box-shadow: 0 0 24px rgba(56, 225, 255, 0.14);
  transform: translateY(-2px);
}

.btn-lg { padding: 15px 32px; font-size: 16px; }
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-block { width: 100%; }

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--brand-b);
  font-weight: 600;
  font-size: 14px;
}
.text-link:hover { color: #9beaff; text-decoration: underline; }

/* ============ 05 顶部导航 ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(11, 16, 23, 0.68);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: background 0.35s ease, border-color 0.35s ease;
}

.site-header.scrolled {
  background: rgba(11, 16, 23, 0.86);
  border-bottom-color: var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  height: var(--header-h);
}

/* 品牌双行：改个车 / GCG Car Studio */
.brand {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.15;
  flex-shrink: 0;
}
.brand-cn {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--text-1);
  background: linear-gradient(120deg, #fff, #cfe5ff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.brand-en {
  font-family: var(--font-num);
  font-size: 10px;
  letter-spacing: 0.42em;
  color: var(--text-3);
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  position: relative;
  padding: 8px 14px;
  color: var(--text-2);
  font-size: 15px;
  font-weight: 500;
  border-radius: 8px;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-main);
  opacity: 0;
  transform: scaleX(0.4);
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.nav-link:hover { color: var(--text-1); }
.nav-link.active { color: #fff; }
.nav-link.active::after, .nav-link:hover::after { opacity: 1; transform: scaleX(1); }

.header-actions { display: flex; align-items: center; gap: var(--space-2); }
.header-phone svg { flex-shrink: 0; }

/* 汉堡按钮（≤1080px 显示） */
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
}
.burger span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--text-1);
  transition: transform 0.35s ease, opacity 0.35s ease;
}
.burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ 06 页脚 ============ */
.site-footer {
  margin-top: 0;
  background: linear-gradient(180deg, rgba(11, 16, 23, 0.4), var(--bg-0));
  border-top: 1px solid var(--line);
  padding: var(--space-6) 0 var(--space-4);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
  gap: var(--space-5);
}
.footer-brand-link { margin-bottom: var(--space-2); }
.footer-slogan {
  color: var(--brand-b);
  font-weight: 600;
  letter-spacing: 0.02em;
}
.footer-note { color: var(--text-3); font-size: 14px; }
.footer-title {
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--text-1);
  margin-bottom: var(--space-2);
}
.footer-links li, .footer-contact li { margin-bottom: 10px; }
.footer-links a { color: var(--text-2); font-size: 14px; }
.footer-links a:hover { color: #fff; }
.footer-contact { font-size: 14px; color: var(--text-2); }
.footer-contact a { color: var(--brand-b); }
.footer-bottom {
  margin-top: var(--space-5);
  padding-top: var(--space-3);
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-1);
  color: var(--text-3);
  font-size: 13px;
}
.footer-bottom p { margin: 0; }
.footer-icp { color: var(--text-3); }

/* 右下悬浮拨打按钮 */
.float-call {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 22px;
  border-radius: 999px;
  background: var(--grad-main);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  box-shadow: 0 12px 32px rgba(62, 123, 250, 0.4);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.float-call:hover {
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(56, 225, 255, 0.45);
}

/* ============ 07 Hero ============ */
.hero {
  position: relative;
  padding: calc(var(--header-h) + clamp(48px, 8vw, 96px)) 0 clamp(56px, 7vw, 84px);
  overflow: hidden;
}
.hero-inner { position: relative; z-index: 2; text-align: center; max-width: 1000px; }

/* 背景网格/光斑层（hero-grid-layer 仅此一屏大面积网格） */
.hero-grid-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(640px 340px at 50% -60px, rgba(62, 123, 250, 0.30), transparent 64%),
    radial-gradient(520px 300px at 92% 18%, rgba(56, 225, 255, 0.10), transparent 60%),
    radial-gradient(520px 320px at 6% 40%, rgba(62, 123, 250, 0.08), transparent 60%),
    linear-gradient(rgba(148, 170, 210, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 170, 210, 0.055) 1px, transparent 1px);
  background-size: auto, auto, auto, 52px 52px, 52px 52px;
  mask-image: linear-gradient(180deg, #000 30%, transparent 92%);
  -webkit-mask-image: linear-gradient(180deg, #000 30%, transparent 92%);
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid rgba(56, 225, 255, 0.28);
  background: rgba(62, 123, 250, 0.10);
  color: #8fd9ff;
  font-size: 13px;
  letter-spacing: 0.06em;
  margin: 0 auto 22px;
}

.hero-title {
  font-size: clamp(34px, 5.4vw, 62px);
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.22;
  margin-bottom: 20px;
}
.grad-text {
  background: linear-gradient(100deg, var(--brand-a), var(--brand-b));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  font-size: 17px;
  color: var(--text-2);
  max-width: 760px;
  margin: 0 auto var(--space-4);
}

.hero-ctas {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

/* 信任数据条 */
.hero-stats {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: clamp(20px, 4vw, 56px);
  margin: 0 auto var(--space-5);
}
.stat dt {
  font-family: var(--font-num);
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 800;
  color: var(--text-1);
  letter-spacing: 0.02em;
  display: flex;
  align-items: baseline;
  gap: 2px;
}
.stat dd { color: var(--text-3); font-size: 13px; margin-top: 2px; }

/* 合作品牌徽标行 */
.brand-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}
.brand-logo {
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--glass);
  color: var(--text-2);
  font-size: 13px;
  letter-spacing: 0.04em;
  transition: border-color 0.3s ease, color 0.3s ease, background 0.3s ease;
}
.brand-logo:hover {
  color: var(--text-1);
  border-color: rgba(56, 225, 255, 0.4);
  background: var(--glass-hi);
}

/* ============ 08 面包屑与内页头部 ============ */
.crumb {
  padding-top: calc(var(--header-h) + 18px);
}
.crumb .container {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-3);
}
.crumb a { color: var(--text-3); }
.crumb a:hover { color: var(--brand-b); }

.page-hero {
  position: relative;
  padding: clamp(36px, 6vw, 72px) 0 clamp(24px, 4vw, 44px);
  text-align: center;
}
.page-hero .container { max-width: 1000px; }
.page-title {
  font-size: clamp(28px, 4.2vw, 46px);
  font-weight: 800;
  margin-bottom: 16px;
}
.page-lead {
  font-size: 16px;
  color: var(--text-2);
  max-width: 820px;
  margin: 0 auto;
}
.page-tagline {
  display: inline-block;
  color: var(--brand-b);
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 14px;
}
.page-desc { max-width: 820px; margin: 16px auto 0; }
.page-count { color: var(--text-3); font-size: 13px; margin-top: 14px; }

/* ============ 09 区块标题 ============ */
.section-head { text-align: center; margin-bottom: var(--space-5); }
.section-head.left { text-align: left; }
.kicker {
  color: var(--brand-b);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.section-title { font-size: clamp(24px, 3.2vw, 36px); font-weight: 800; }
.section-sub { color: var(--text-2); max-width: 720px; margin: 8px auto 0; }
.section-head.left .section-sub { margin-left: 0; }

/* ============ 10 玻璃卡片族 ============ */
/* 服务矩阵卡：渐变 hover 高亮 */
.matrix-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.015)),
    var(--bg-1);
  overflow: hidden;
  transition: transform 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}
.matrix-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(62, 123, 250, 0.16), rgba(56, 225, 255, 0.05) 55%, transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}
.matrix-card:hover {
  transform: translateY(-6px);
  border-color: rgba(56, 225, 255, 0.42);
  box-shadow: var(--shadow), 0 0 30px rgba(62, 123, 250, 0.12);
}
.matrix-card:hover::before { opacity: 1; }

.matrix-num {
  font-family: var(--font-num);
  font-size: 13px;
  color: var(--text-3);
  letter-spacing: 0.2em;
  margin-bottom: var(--space-2);
}
.matrix-card h3 {
  position: relative;
  font-size: 22px;
  margin-bottom: 8px;
}
.matrix-card h2 { position: relative; font-size: 26px; }
.matrix-tagline { position: relative; color: var(--brand-b); font-size: 14px; font-weight: 500; }
.matrix-desc { position: relative; color: var(--text-2); font-size: 14px; }
.matrix-tags {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: var(--space-3) 0;
}
.matrix-foot {
  position: relative;
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-3);
  font-size: 13px;
  border-top: 1px solid var(--line);
  padding-top: var(--space-2);
}
.matrix-arrow {
  font-size: 18px;
  color: var(--brand-b);
  transition: transform 0.3s ease;
}
.matrix-card:hover .matrix-arrow { transform: translateX(6px); }

/* 分类色倾向 */
.matrix-film::before { background: linear-gradient(135deg, rgba(56, 225, 255, 0.18), rgba(62, 123, 250, 0.05) 55%, transparent); }
.matrix-electronics::before { background: linear-gradient(135deg, rgba(110, 90, 255, 0.16), rgba(56, 225, 255, 0.05) 60%, transparent); }
.matrix-interior::before { background: linear-gradient(135deg, rgba(242, 184, 75, 0.10), rgba(62, 123, 250, 0.06) 60%, transparent); }

/* 王牌服务卡 */
.ace-card, .case-card, .article-card {
  display: flex;
  flex-direction: column;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: transform 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}
.ace-card:hover, .case-card:hover, .article-card:hover {
  transform: translateY(-6px);
  border-color: rgba(56, 225, 255, 0.36);
  box-shadow: var(--shadow);
}
.ace-body, .case-body, .article-body { padding: var(--space-3); }
.ace-body h3, .case-body h2, .article-body h2 {
  font-size: 19px;
  margin-bottom: 8px;
  line-height: 1.4;
}
.ace-body p, .case-body p, .article-body p { color: var(--text-2); font-size: 14px; }
.case-body h2 a, .article-body h2 a { color: var(--text-1); }
.case-body h2 a:hover, .article-body h2 a:hover { color: var(--brand-b); }
.case-body time, .article-body time, .case-meta time { color: var(--text-3); font-size: 12px; }
.case-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.case-meta .tag-chip { margin: 0; }

/* 功能区 / 区域卡 */
.zone-card {
  display: block;
  padding: var(--space-4);
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  transition: transform 0.35s ease, border-color 0.35s ease, background 0.35s ease;
}
.zone-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.zone-card h3::before {
  content: "";
  width: 6px;
  height: 22px;
  border-radius: 3px;
  background: var(--grad-main);
}
.zone-card p { color: var(--text-2); font-size: 14px; margin: 0; }
.zone-card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 225, 255, 0.35);
  background: var(--glass-hi);
}

/* 理念卡 */
.principle-card {
  padding: var(--space-4);
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  transition: transform 0.35s ease, border-color 0.35s ease;
}
.principle-card h3 { font-size: 18px; color: var(--text-1); margin-bottom: 8px; }
.principle-card p { font-size: 14px; color: var(--text-2); margin: 0; }
.principle-card:hover { transform: translateY(-4px); border-color: rgba(242, 184, 75, 0.35); }

/* 资质卡 */
.cred-card {
  padding: var(--space-4);
  border-radius: var(--r-lg);
  background: var(--glass);
  border: 1px solid var(--line);
  text-align: center;
  transition: transform 0.35s ease, border-color 0.35s ease;
}
.cred-card:hover { transform: translateY(-4px); border-color: rgba(56, 225, 255, 0.4); }
.cred-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: var(--space-2);
  border-radius: 16px;
  background: var(--grad-soft);
  border: 1px solid rgba(56, 225, 255, 0.24);
  color: var(--brand-b);
  font-size: 24px;
  font-weight: 700;
}
.cred-card h3 { font-size: 19px; }
.cred-card p { font-size: 14px; color: var(--text-2); }
.cred-note {
  display: inline-block;
  font-size: 12px;
  color: var(--gold);
  border: 1px solid rgba(242, 184, 75, 0.28);
  border-radius: 999px;
  padding: 3px 12px;
}

/* 授权品牌矩阵 */
.brand-auth-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--space-3);
}
.brand-auth {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: var(--space-3);
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: transform 0.35s ease, border-color 0.35s ease;
}
.brand-auth strong { font-size: 18px; color: var(--text-1); letter-spacing: 0.02em; }
.brand-auth span { color: var(--text-3); font-size: 13px; }
.brand-auth:hover { transform: translateY(-4px); border-color: rgba(56, 225, 255, 0.4); }

/* 荣誉卡 */
.honor-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 6px;
  padding: var(--space-5) var(--space-4);
  border-radius: var(--r-lg);
  background:
    radial-gradient(360px 200px at 50% -30px, rgba(242, 184, 75, 0.10), transparent 70%),
    var(--glass);
  border: 1px solid var(--line);
}
.honor-star { color: var(--gold); font-size: 30px; }
.honor-card h3 { font-size: 19px; }
.honor-card p { color: var(--text-2); font-size: 14px; margin: 0; }
.honor-grid .grid-2 { gap: var(--space-3); }

/* 联系卡 */
.contact-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}
.contact-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  padding: var(--space-4);
  border-radius: var(--r-lg);
  background: var(--glass);
  border: 1px solid var(--line);
  transition: transform 0.35s ease, border-color 0.35s ease;
}
.contact-card h2 { font-size: 18px; margin: 0; }
.contact-card p { color: var(--text-2); font-size: 14px; margin: 0; }
.contact-card:hover { transform: translateY(-4px); border-color: rgba(56, 225, 255, 0.4); }
.contact-card-icon { font-size: 22px; color: var(--brand-b); }
a.contact-card { color: var(--text-2); }

/* ============ 11 标签与筛选 ============ */
.tag-chip {
  display: inline-flex;
  align-items: center;
  padding: 3px 12px;
  border-radius: 999px;
  font-size: 12px;
  line-height: 1.6;
  color: #bfe9ff;
  background: rgba(62, 123, 250, 0.12);
  border: 1px solid rgba(56, 225, 255, 0.2);
}

.filter-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: var(--space-4);
}
.filter-chip {
  padding: 8px 22px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--glass);
  color: var(--text-2);
  font-size: 14px;
  transition: all 0.3s ease;
}
.filter-chip:hover { color: #fff; border-color: rgba(56, 225, 255, 0.5); }
.filter-chip.active {
  background: var(--grad-main);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 8px 22px rgba(62, 123, 250, 0.3);
}

/* GEO 专题 chip */
.topic-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}
.topic-chip {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  min-width: 210px;
  padding: 14px 22px;
  border-radius: var(--r-md);
  background: var(--glass);
  border: 1px solid var(--line);
  transition: all 0.3s ease;
}
.topic-chip-name { color: var(--text-1); font-weight: 600; font-size: 15px; }
.topic-chip-count { color: var(--text-3); font-size: 12px; }
.topic-chip:hover {
  transform: translateY(-3px);
  border-color: rgba(56, 225, 255, 0.45);
  box-shadow: var(--shadow-glow);
}
.topic-chip:hover .topic-chip-name { color: var(--brand-b); }

/* GEO 专题目录锚点 */
.topic-nav { padding: 10px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.topic-nav-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  justify-content: center;
}
.topic-anchor { color: var(--text-2); font-size: 14px; }
.topic-anchor:hover { color: var(--brand-b); }

/* ============ 12 封面（图片 / 占位） ============ */
.case-cover, .ace-cover, .article-cover {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 200px;
  overflow: hidden;
  background: var(--bg-3);
}
.case-cover img, .ace-cover img, .article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.ace-card:hover .ace-cover img, .case-card:hover .case-cover img { transform: scale(1.04); }
.article-cover { height: 300px; margin-bottom: var(--space-3); border-radius: var(--r-lg); }
.article-cover img { border-radius: var(--r-lg); }

/* 空图 CSS 渐变占位卡 */
.ph {
  background:
    radial-gradient(300px 160px at 20% 0%, rgba(62, 123, 250, 0.22), transparent 70%),
    radial-gradient(260px 160px at 85% 110%, rgba(56, 225, 255, 0.12), transparent 70%),
    linear-gradient(160deg, #131c2b 0%, #0e1522 100%);
  border-bottom: 1px solid var(--line);
}
.ph span {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  border-radius: 999px;
  border: 1px dashed rgba(148, 170, 210, 0.4);
  color: var(--text-3);
  font-size: 13px;
  letter-spacing: 0.06em;
  background: rgba(11, 16, 23, 0.5);
  backdrop-filter: blur(4px);
}
.ph::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 170, 210, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 170, 210, 0.05) 1px, transparent 1px);
  background-size: 34px 34px;
}

/* 区分色倾向占位 */
.ace-cover-audio.ph, .ace-cover-audio .ph-inner {
  background-image:
    radial-gradient(300px 160px at 80% 0%, rgba(110, 90, 255, 0.22), transparent 70%),
    radial-gradient(260px 160px at 10% 110%, rgba(56, 225, 255, 0.12), transparent 70%),
    linear-gradient(160deg, #131c2b 0%, #0e1522 100%);
}
.ace-cover-360.ph, .ace-cover-360 .ph-inner {
  background-image:
    radial-gradient(300px 160px at 50% -40px, rgba(56, 225, 255, 0.16), transparent 70%),
    radial-gradient(260px 160px at 90% 120%, rgba(62, 123, 250, 0.2), transparent 70%),
    linear-gradient(160deg, #131c2b 0%, #0e1522 100%);
}

/* ============ 13 FAQ / 问答 / GEO ============ */
.faq-mini, .faq-list, .qa-list { display: flex; flex-direction: column; gap: 12px; }

.qa-item {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 0 var(--space-3);
  transition: border-color 0.3s ease, background 0.3s ease;
}
.qa-item[open] { border-color: rgba(56, 225, 255, 0.34); background: var(--glass-hi); }
.qa-item summary {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  list-style: none;
  padding: 16px 0;
  color: var(--text-1);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.6;
  user-select: none;
}
.qa-item summary::-webkit-details-marker { display: none; }
.qa-item summary::after {
  content: "+";
  margin-left: auto;
  flex-shrink: 0;
  color: var(--brand-b);
  font-size: 20px;
  line-height: 1;
  transition: transform 0.3s ease;
}
.qa-item[open] summary::after { transform: rotate(45deg); }
.qa-item summary:hover { color: var(--brand-b); }

.qa-no {
  font-family: var(--font-num);
  color: var(--brand-b);
  font-size: 13px;
  flex-shrink: 0;
}
.qa-body {
  padding: 0 0 var(--space-3);
  color: var(--text-2);
  font-size: 15px;
  border-top: 1px dashed var(--line);
  padding-top: var(--space-2);
}
.qa-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: var(--space-2);
}

.faq-group-title {
  font-size: 20px;
  margin: 0 0 var(--space-2);
  padding-left: 14px;
  border-left: 3px solid var(--brand-a);
}
.faq-section { margin-bottom: var(--space-5); }
.faq-section:last-child { margin-bottom: 0; }

/* GEO 分组卡 */
.ask-group {
  padding: var(--space-4);
  margin-bottom: var(--space-4);
  border-radius: var(--r-lg);
  background: var(--glass);
  border: 1px solid var(--line);
}
.ask-group-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.ask-group-head h2 { font-size: 22px; }
.ask-group-head h2 a { color: var(--text-1); }
.ask-group-head h2 a:hover { color: var(--brand-b); }
.ask-mainword { color: var(--text-3); font-size: 14px; margin-top: 4px; }
.ask-sample { margin-top: var(--space-2); }
.ask-sample li {
  position: relative;
  padding: 4px 0 4px 22px;
  color: var(--text-2);
  font-size: 14px;
}
.ask-sample li::before {
  content: "Q";
  position: absolute;
  left: 0;
  font-family: var(--font-num);
  color: var(--brand-b);
  font-size: 12px;
}
.empty-note, .empty-state {
  text-align: center;
  padding: var(--space-5) var(--space-3);
  border: 1px dashed var(--line-strong);
  border-radius: var(--r-lg);
  color: var(--text-2);
}

/* 相关案例卡（case 详情） */
.rel-case {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: var(--space-3);
  border-radius: var(--r-md);
  background: var(--glass);
  border: 1px solid var(--line);
  color: var(--text-2);
  font-size: 14px;
  transition: all 0.3s ease;
}
.rel-case:hover { transform: translateY(-3px); border-color: rgba(56, 225, 255, 0.4); }
.rel-case strong { color: var(--text-1); font-size: 16px; }
.rel-case-meta { display: flex; gap: 10px; align-items: center; }

/* ============ 14 服务列表折叠项 ============ */
.service-list { display: flex; flex-direction: column; gap: 14px; }
.service-item {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 0 var(--space-3);
  transition: border-color 0.3s ease;
}
.service-item[open] { border-color: rgba(56, 225, 255, 0.36); }
.service-item summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 0;
}
.service-item summary::-webkit-details-marker { display: none; }
.service-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding-right: 24px;
  position: relative;
}
.service-row::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  color: var(--brand-b);
  font-size: 20px;
  transition: transform 0.3s ease;
}
.service-item[open] .service-row::after { transform: translateY(-50%) rotate(45deg); }
.service-name { font-size: 18px; margin: 0; }
.service-price {
  font-family: var(--font-num);
  color: var(--gold);
  font-size: 13px;
  border: 1px solid rgba(242, 184, 75, 0.3);
  border-radius: 999px;
  padding: 3px 12px;
}
.service-detail {
  padding: 0 0 var(--space-3);
  border-top: 1px dashed var(--line);
  padding-top: var(--space-2);
  color: var(--text-2);
  font-size: 15px;
}
.service-summary { font-weight: 600; color: var(--text-1); }
.service-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.service-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: var(--space-2); }

/* ============ 15 数据条与数字 ============ */
.data-band {
  padding: clamp(48px, 6vw, 72px) 0;
  background:
    radial-gradient(640px 300px at 50% 0%, rgba(62, 123, 250, 0.14), transparent 70%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.006));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.data-band-grid {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: var(--space-4);
  text-align: center;
}
.data-item { display: flex; flex-direction: column; gap: 4px; }
.num {
  font-family: var(--font-num);
  font-size: clamp(34px, 4.6vw, 54px);
  font-weight: 800;
  line-height: 1;
  color: var(--text-1);
  letter-spacing: 0.01em;
}
.num.gold { color: var(--gold); }
.data-unit { color: var(--text-3); font-size: 14px; }

.honor-strip {
  margin-top: var(--space-5);
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--r-lg);
  background: var(--glass);
  border: 1px solid var(--line);
  text-align: center;
}
.honor-stat { display: flex; flex-direction: column; gap: 4px; }
.honor-stat span { color: var(--text-3); font-size: 14px; }

/* ============ 16 CTA 大区 ============ */
.cta-band {
  padding: clamp(64px, 8vw, 96px) 0;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(720px 360px at 12% 10%, rgba(62, 123, 250, 0.2), transparent 60%),
    radial-gradient(620px 320px at 92% 110%, rgba(56, 225, 255, 0.12), transparent 60%),
    linear-gradient(180deg, var(--bg-0), var(--bg-1) 70%);
}
.cta-band-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-5);
  align-items: center;
}
.cta-band-main h2 { font-size: clamp(24px, 3vw, 34px); }
.cta-band-main p { color: var(--text-2); max-width: 560px; }
.cta-band-main .hero-ctas { justify-content: flex-start; margin: var(--space-2) 0 0; }
.cta-contact {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: var(--space-4);
  border-radius: var(--r-lg);
  background: var(--glass);
  border: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.cta-contact > div {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
}
.cta-contact > div:last-child { border-bottom: none; }
.cta-contact dt { color: var(--text-3); font-size: 13px; font-weight: 500; }
.cta-contact dd { font-size: 14px; }

/* ============ 17 表单 ============ */
.enquiry-form { margin-top: var(--space-3); }
.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field-full { grid-column: 1 / -1; }
.form-field label { color: var(--text-1); font-size: 14px; font-weight: 600; }
.form-field label em { color: var(--brand-b); }
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 11px 14px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.045);
  color: var(--text-1);
  font-family: inherit;
  font-size: 15px;
  line-height: 1.6;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}
.form-field textarea { resize: vertical; min-height: 110px; }
.form-field input::placeholder, .form-field textarea::placeholder { color: var(--text-3); }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  outline: none;
  border-color: rgba(56, 225, 255, 0.6);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 0 0 3px rgba(62, 123, 250, 0.18);
}
.form-field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, #8fb6ff 50%), linear-gradient(135deg, #8fb6ff 50%, transparent 50%); background-position: calc(100% - 20px) 50%, calc(100% - 15px) 50%; background-size: 5px 5px; background-repeat: no-repeat; }
.form-field select option { background: var(--bg-1); color: var(--text-1); }
.field-validation-error, .form-field .validation-message {
  color: #ff8f8f;
  font-size: 12px;
}
.form-actions { margin-top: var(--space-3); display: flex; align-items: center; gap: var(--space-2); flex-wrap: wrap; }
.form-hint { color: var(--text-3); font-size: 12px; }

/* 成功提示 */
.alert-success {
  padding: var(--space-3);
  margin-bottom: var(--space-3);
  border-radius: var(--r-md);
  background: rgba(74, 222, 158, 0.08);
  border: 1px solid rgba(74, 222, 158, 0.35);
  color: #b7f7d6;
}
.alert-success strong { color: #4ade9e; display: block; margin-bottom: 4px; }
.alert-success p { margin: 0; font-size: 14px; }

/* 侧栏信息卡 */
.book-side { display: flex; flex-direction: column; gap: var(--space-3); }
.side-card {
  padding: var(--space-4);
  border-radius: var(--r-lg);
  background: var(--glass);
  border: 1px solid var(--line);
}
.side-card h2 { font-size: 19px; margin-bottom: var(--space-2); }
.side-card .btn { margin-top: var(--space-2); }
.side-card .cta-contact { padding: 0; border: none; background: none; backdrop-filter: none; }
.tip-card { border-color: rgba(242, 184, 75, 0.22); }
.visit-points li {
  position: relative;
  padding: 6px 0 6px 22px;
  color: var(--text-2);
  font-size: 14px;
}
.visit-points li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--brand-b);
}
.tip-card .visit-points li::before { color: var(--gold); }
.visit-card {
  padding: var(--space-4);
  border-radius: var(--r-lg);
  background: var(--glass);
  border: 1px solid var(--line);
}
.visit-card h2 { font-size: 22px; }

/* ============ 18 富文本正文排版 ============ */
.rich-text { color: var(--text-2); line-height: 1.85; }
.rich-text p { margin-bottom: 1em; }
.rich-text h2, .rich-text h3 { margin-top: 1.4em; }
.rich-text strong { color: var(--text-1); }
.rich-text ul, .rich-text ol { padding-left: 1.3em; margin-bottom: 1em; }
.rich-text ul { list-style: disc; }
.rich-text ol { list-style: decimal; }
.rich-text li { margin-bottom: 0.35em; }
.rich-text a { color: var(--brand-b); text-decoration: underline; }
.rich-text blockquote {
  margin: 1.2em 0;
  padding: 12px 18px;
  border-left: 3px solid var(--brand-a);
  background: var(--glass);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  color: var(--text-2);
}
.article-body { font-size: 16px; }

.article-cta-box {
  margin-top: var(--space-5);
  padding: var(--space-4);
  text-align: center;
  border-radius: var(--r-lg);
  background:
    radial-gradient(420px 220px at 50% 0%, rgba(62, 123, 250, 0.12), transparent 72%),
    var(--glass);
  border: 1px solid var(--line);
}
.article-cta-box h2 { font-size: 20px; }
.article-cta-box .hero-ctas { margin: var(--space-2) 0 0; }

/* ============ 19 错误页 ============ */
.error-page {
  padding: calc(var(--header-h) + 60px) 0 100px;
  text-align: center;
}
.error-code {
  font-family: var(--font-num);
  font-size: clamp(80px, 16vw, 160px);
  font-weight: 800;
  line-height: 1;
  margin: 0 0 var(--space-2);
  background: linear-gradient(120deg, var(--brand-a), var(--brand-b));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.error-request { color: var(--text-3); font-size: 13px; margin-bottom: var(--space-3); }

/* ============ 19b 补充内页组件 ============ */
/* 时间线（About 品牌历程） */
.timeline {
  list-style: none;
  position: relative;
  margin: 0 auto;
  padding: 0;
  max-width: 900px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, rgba(62, 123, 250, 0.5), rgba(56, 225, 255, 0.12));
}
.timeline-item {
  position: relative;
  padding: 0 0 var(--space-4) 48px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--bg-0);
  border: 2px solid var(--brand-b);
  box-shadow: 0 0 0 4px rgba(62, 123, 250, 0.18);
}
.timeline-flag {
  display: inline-flex;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--brand-b);
  background: rgba(62, 123, 250, 0.10);
  border: 1px solid rgba(56, 225, 255, 0.22);
  border-radius: 999px;
  padding: 4px 14px;
  margin-bottom: var(--space-2);
}
.timeline-card {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--r-md);
  background: var(--glass);
  border: 1px solid var(--line);
}
.timeline-card h3 { font-size: 19px; margin-bottom: 8px; }
.timeline-card p { color: var(--text-2); font-size: 14px; margin: 0; }

/* 服务矩阵总览（Services/Index 全宽卡） */
.matrix-overview {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.matrix-card-lg { padding: var(--space-5); }
.matrix-head {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}
.matrix-card-lg .matrix-tagline { margin-top: 2px; }
.service-name-list {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 4px 16px;
}
.service-name-list a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-2);
  font-size: 14px;
  padding: 6px 0;
  border-bottom: 1px dashed var(--line);
}
.service-name-list a::before {
  content: "";
  width: 5px;
  height: 5px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--grad-main);
}
.service-name-list a:hover { color: var(--brand-b); }
.matrix-note { color: var(--text-3); font-size: 13px; margin: var(--space-3) 0 0; }

/* 指南栏目分组（Guide/Index） */
.guide-group { margin-bottom: var(--space-6); }
.guide-group:last-child { margin-bottom: 0; }

/* 门店环境页信息两栏（Store） */
.store-visit { align-items: stretch; }
.store-visit .visit-card,
.store-visit .visit-map {
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
}
.store-visit .visit-map .section-cta { margin-top: auto; }
.visit-map .btn { margin-top: var(--space-2); }
.visit-map .cta-contact { padding: 0; margin-top: var(--space-2); }

/* 服务分类详情 Hero 强调层（Services/Detail） */
.page-hero-service {
  background:
    radial-gradient(560px 260px at 50% -80px, rgba(62, 123, 250, 0.14), transparent 68%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.012), transparent);
  border-bottom: 1px solid var(--line);
}

/* ============ 20 动效 ============ */
/* 滚动淡入/上浮：仅在 JS 就绪(html.anim-ready)后隐藏未入场元素，保证无 JS 可读 */
html.anim-ready .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
html.anim-ready .reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}
/* 入场过渡错峰 */
html.anim-ready .reveal.revealed { transition-delay: 0s; }
html.anim-ready .grid-3 .reveal:nth-child(2), html.anim-ready .grid-2 .reveal:nth-child(2) { transition-delay: 0.08s; }
html.anim-ready .grid-3 .reveal:nth-child(3), html.anim-ready .grid-2 .reveal:nth-child(3) { transition-delay: 0.16s; }
html.anim-ready .grid-3 .reveal:nth-child(4) { transition-delay: 0.08s; }
html.anim-ready .grid-3 .reveal:nth-child(5) { transition-delay: 0.16s; }
html.anim-ready .grid-3 .reveal:nth-child(6) { transition-delay: 0.24s; }

/* 尊重减少动态偏好：关闭滚动动效与平滑滚动 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
  html.anim-ready .reveal { opacity: 1; transform: none; }
  html.anim-ready .num { transition: none; }
}

/* ============ 21 响应式断点 ============ */
@media (max-width: 1180px) {
  .main-nav { display: none; }
  .burger { display: inline-flex; }

  /* 移动抽屉导航 */
  .main-nav.mobile-open {
    display: flex;
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: var(--space-2) var(--space-3) var(--space-3);
    background: rgba(11, 16, 23, 0.97);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
    z-index: 99;
  }
  .main-nav.mobile-open .nav-link { padding: 12px 16px; font-size: 16px; }
}

@media (max-width: 1080px) {
  .contact-cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 960px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .cta-band-inner { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-4); }
}

@media (max-width: 768px) {
  body { font-size: 15px; }
  .section { padding: 64px 0; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .header-phone { display: none; }
  .brand-cn { font-size: 19px; }
  .hero { padding-top: calc(var(--header-h) + 40px); }
  .hero-stats { gap: 22px; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-3); }
  .form-grid-2 { grid-template-columns: 1fr; }
  .data-band-grid, .honor-strip { gap: var(--space-3); }
  .float-call span { display: none; }
  .float-call { padding: 15px; border-radius: 50%; }
  .cta-contact > div { grid-template-columns: 72px 1fr; }
  .book-grid .grid-2 { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .container { padding: 0 var(--space-2); }
  .contact-cards { grid-template-columns: 1fr; }
  .topic-chip { min-width: calc(50% - 8px); }
  .page-hero .hero-ctas .btn { width: 100%; }
}