@charset "UTF-8";
/* ============================================================
   东策（北京）科技有限公司 · 官网样式表
   受众：民营口腔机构（B2B 深青） + 口腔患者（B2C 青绿）
   结构：令牌 → 基础 → 布局 → 组件 → 页面 → 响应式
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 品牌 · 机构频道 */
  --brand: #0e7490;
  --brand-dark: #155e75;
  --brand-deep: #0f3f4f;
  --brand-600: #0891b2;
  --brand-100: #cffafe;
  --brand-50: #ecfeff;

  /* 患者频道 */
  --teal: #0f6e56;
  --teal-dark: #085041;
  --teal-100: #9fe1cb;
  --teal-50: #e1f5ee;

  /* 强调 / 行动 */
  --accent: #f97316;
  --accent-dark: #ea580c;
  --accent-50: #fff7ed;

  /* 中性 */
  --ink: #0f172a;
  --ink-2: #1e293b;
  --ink-3: #334155;
  --ink-4: #475569;
  --ink-5: #64748b;
  --ink-6: #94a3b8;
  --line: #e2e8f0;
  --line-soft: #f1f5f9;
  --bg: #f8fafc;
  --white: #ffffff;

  /* 语义 */
  --ok: #10b981;
  --warn: #d97706;

  /* 尺寸 */
  --container: 1200px;
  --narrow: 880px;
  --r-sm: 8px;
  --r: 12px;
  --r-lg: 20px;
  --r-full: 999px;

  /* 阴影 */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, .04);
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, .06), 0 1px 2px rgba(15, 23, 42, .04);
  --shadow: 0 4px 14px -3px rgba(15, 23, 42, .08), 0 2px 6px -2px rgba(15, 23, 42, .04);
  --shadow-lg: 0 20px 44px -14px rgba(15, 23, 42, .18);

  /* 节奏 */
  --section-y: 88px;
  --header-h: 72px;

  --t: .22s cubic-bezier(.4, 0, .2, 1);
}

/* ---------- 2. 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 { margin: 0; font-weight: 600; line-height: 1.35; letter-spacing: -.01em; }
p { margin: 0 0 16px; }
ul, ol { margin: 0 0 16px; padding-left: 22px; }
li { margin-bottom: 8px; }
img { max-width: 100%; display: block; }
a { color: var(--brand-dark); text-decoration: none; transition: color var(--t); }
a:hover { color: var(--brand); }
strong { font-weight: 600; }
small { font-size: 13px; }

/* 键盘焦点可见性（无障碍必需） */
:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
  border-radius: 4px;
}

/* 屏幕阅读器专用文本 */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* 跳转到主内容（键盘用户） */
.skip-link {
  position: absolute; left: 16px; top: -60px; z-index: 200;
  background: var(--brand); color: #fff; padding: 10px 18px;
  border-radius: var(--r-sm); font-size: 14px; transition: top var(--t);
}
.skip-link:focus { top: 12px; color: #fff; }

/* ---------- 3. 布局 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.container--narrow { max-width: var(--narrow); }

.section { padding: var(--section-y) 0; }
.section--soft { background: var(--bg); }
.section--brand { background: linear-gradient(150deg, var(--brand) 0%, var(--brand-dark) 55%, var(--brand-deep) 100%); color: #fff; }
.section--teal { background: var(--teal-50); }
.section--tight { padding: 56px 0; }

.section-head { max-width: 720px; margin: 0 auto 52px; text-align: center; }
.section-head--left { margin-left: 0; text-align: left; }
.section-head h2 { font-size: 34px; margin-bottom: 14px; }
.section-head p { color: var(--ink-5); font-size: 16px; margin: 0; }
.section--brand .section-head h2 { color: #fff; }
.section--brand .section-head p { color: var(--brand-100); }

/* 小标签 */
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .06em;
  color: var(--brand); background: var(--brand-50); border: 1px solid var(--brand-100);
  padding: 4px 12px; border-radius: var(--r-full); margin-bottom: 16px;
}
.eyebrow--teal { color: var(--teal); background: var(--teal-50); border-color: var(--teal-100); }
.eyebrow--light { color: #fff; background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .3); }

/* ---------- 4. 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: var(--r-sm); border: 1px solid transparent;
  font-size: 15px; font-weight: 600; font-family: inherit; line-height: 1.2;
  cursor: pointer; text-align: center; transition: all var(--t); white-space: nowrap;
}
.btn--primary { background: var(--brand); color: #fff; border-color: var(--brand); }
.btn--primary:hover { background: var(--brand-dark); border-color: var(--brand-dark); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn--accent { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn--accent:hover { background: var(--accent-dark); border-color: var(--accent-dark); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn--teal { background: var(--teal); color: #fff; border-color: var(--teal); }
.btn--teal:hover { background: var(--teal-dark); border-color: var(--teal-dark); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn--outline { background: transparent; color: var(--brand-dark); border-color: var(--brand); }
.btn--outline:hover { background: var(--brand); color: #fff; }
.btn--ghost-light { background: rgba(255, 255, 255, .12); color: #fff; border-color: rgba(255, 255, 255, .45); }
.btn--ghost-light:hover { background: #fff; color: var(--brand-deep); }
.btn--lg { padding: 16px 34px; font-size: 16px; }
.btn--block { width: 100%; }
.btn-group { display: flex; flex-wrap: wrap; gap: 14px; }

/* ---------- 5. 站点头部 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  height: var(--header-h);
  display: flex; align-items: center; gap: 28px;
}
.logo { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; color: var(--ink); }
.logo:hover { color: var(--ink); }
.logo-mark {
  width: 38px; height: 38px; border-radius: 10px; flex: 0 0 38px;
  background: linear-gradient(140deg, var(--brand) 0%, var(--teal) 100%);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 17px; letter-spacing: -.02em;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-name { font-size: 17px; font-weight: 600; letter-spacing: -.01em; }
.logo-sub { font-size: 11px; color: var(--ink-6); letter-spacing: .02em; }

.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a {
  padding: 8px 14px; border-radius: var(--r-sm); font-size: 15px;
  color: var(--ink-3); font-weight: 500;
}
.nav a:hover { background: var(--brand-50); color: var(--brand-dark); }
.nav a[aria-current="page"] { color: var(--brand-dark); background: var(--brand-50); }

.header-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.header-phone {
  display: flex; align-items: center; gap: 7px; font-size: 14px;
  color: var(--ink-3); font-weight: 600; white-space: nowrap;
}
.header-phone svg { width: 16px; height: 16px; flex: 0 0 16px; color: var(--accent); }
.header-actions .btn { padding: 9px 18px; font-size: 14px; }

.nav-toggle {
  display: none; width: 42px; height: 42px; padding: 0;
  background: transparent; border: 1px solid var(--line); border-radius: var(--r-sm);
  cursor: pointer; align-items: center; justify-content: center; flex: 0 0 42px;
}
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--ink-3); border-radius: 2px; position: relative; }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 2px; background: var(--ink-3); border-radius: 2px;
  transition: transform var(--t);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { transform: translateY(-6px) rotate(-45deg); }

/* 移动端抽屉 */
.drawer {
  position: fixed; inset: var(--header-h) 0 0 0; z-index: 99;
  background: var(--white); padding: 20px 24px 40px;
  overflow-y: auto; display: none;
}
.drawer.is-open { display: block; }
.drawer nav { display: flex; flex-direction: column; gap: 2px; margin-bottom: 24px; }
.drawer nav a {
  padding: 14px 4px; font-size: 17px; font-weight: 500; color: var(--ink-2);
  border-bottom: 1px solid var(--line-soft);
}
.drawer nav a:hover { color: var(--brand); }
.drawer .drawer-sub { font-size: 15px; padding-left: 16px; color: var(--ink-4); }

/* ---------- 6. 首页 Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: var(--brand-deep);
  color: #fff;
  padding: 96px 0 104px;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; object-position: center 40%; transform: scale(1.12); }
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(120% 90% at 82% 96%, rgba(15, 63, 79, .96) 0%, rgba(15, 63, 79, 0) 46%),
    linear-gradient(102deg, rgba(11, 45, 58, .96) 0%, rgba(14, 116, 144, .86) 46%, rgba(15, 110, 86, .74) 100%);
}
.hero .container { position: relative; z-index: 1; }
.hero-inner { max-width: 760px; }
.hero h1 {
  font-size: 52px; line-height: 1.22; letter-spacing: -.025em;
  margin-bottom: 22px; color: #fff;
}
.hero h1 em { font-style: normal; color: #fed7aa; }
.hero-sub { font-size: 18px; line-height: 1.75; color: var(--brand-100); margin-bottom: 34px; max-width: 620px; }

/* 双入口卡片 —— 全站最关键的分流 */
.entry-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 46px; max-width: 860px; }
.entry {
  position: relative; display: block; padding: 28px 28px 26px;
  border-radius: var(--r-lg); background: rgba(255, 255, 255, .09);
  border: 1px solid rgba(255, 255, 255, .22);
  backdrop-filter: blur(10px); color: #fff;
  transition: all var(--t);
}
.entry:hover { background: rgba(255, 255, 255, .15); border-color: rgba(255, 255, 255, .5); transform: translateY(-3px); color: #fff; }
.entry-tag {
  display: inline-block; font-size: 12px; font-weight: 600; letter-spacing: .05em;
  padding: 3px 11px; border-radius: var(--r-full); margin-bottom: 14px;
  background: rgba(255, 255, 255, .18); color: #fff;
}
.entry--patient .entry-tag { background: rgba(249, 115, 22, .28); color: #ffedd5; }
.entry h3 { font-size: 21px; margin-bottom: 10px; color: #fff; }
.entry p { font-size: 14.5px; color: rgba(255, 255, 255, .82); margin: 0 0 18px; }
.entry-list { list-style: none; padding: 0; margin: 0 0 20px; }
.entry-list li {
  font-size: 14px; color: rgba(255, 255, 255, .9); margin-bottom: 7px;
  padding-left: 20px; position: relative;
}
.entry-list li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--brand-100);
}
.entry--patient .entry-list li::before { background: #fdba74; }
.entry-cta { display: inline-flex; align-items: center; gap: 8px; font-size: 15px; font-weight: 600; color: #fff; }
.entry-cta::after { content: "→"; transition: transform var(--t); }
.entry:hover .entry-cta::after { transform: translateX(4px); }

/* ---------- 7. 内页头图 ---------- */
.page-hero {
  position: relative; overflow: hidden; color: #fff;
  padding: 68px 0 64px;
  background: linear-gradient(120deg, var(--brand-deep) 0%, var(--brand-dark) 60%, var(--brand) 100%);
}
.page-hero--teal { background: linear-gradient(120deg, #073b2e 0%, var(--teal-dark) 60%, var(--teal) 100%); }
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { font-size: 40px; margin-bottom: 16px; color: #fff; }
.page-hero p { font-size: 17px; color: rgba(255, 255, 255, .85); max-width: 720px; margin: 0; }
.page-hero .btn-group { margin-top: 28px; }

/* 面包屑 */
.breadcrumb {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  font-size: 13.5px; color: rgba(255, 255, 255, .7); margin-bottom: 18px;
  list-style: none; padding: 0;
}
.breadcrumb li { margin: 0; display: flex; align-items: center; gap: 8px; }
.breadcrumb li + li::before { content: "/"; color: rgba(255, 255, 255, .4); }
.breadcrumb a { color: rgba(255, 255, 255, .85); }
.breadcrumb a:hover { color: #fff; }

/* ---------- 8. 信任数据条 ---------- */
.stats { background: var(--white); border-bottom: 1px solid var(--line); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); }
.stat { background: var(--white); padding: 34px 24px; text-align: center; }
.stat-num {
  font-size: 38px; font-weight: 700; line-height: 1.1; color: var(--brand-dark);
  letter-spacing: -.02em; font-variant-numeric: tabular-nums;
}
.stat-num span { font-size: 20px; font-weight: 600; margin-left: 2px; }
.stat-label { font-size: 14px; color: var(--ink-5); margin-top: 8px; }

/* ---------- 9. 卡片 ---------- */
.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--r);
  padding: 28px 26px; transition: all var(--t); height: 100%;
  display: flex; flex-direction: column;
}
.card:hover { border-color: var(--brand); box-shadow: var(--shadow); transform: translateY(-2px); }
.card-icon {
  width: 48px; height: 48px; border-radius: var(--r-sm); margin-bottom: 18px;
  background: var(--brand-50); color: var(--brand-dark);
  display: flex; align-items: center; justify-content: center; flex: 0 0 48px;
}
.card-icon svg { width: 24px; height: 24px; }
.card h3 { font-size: 18px; margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--ink-5); margin: 0; }
.card-link { margin-top: 16px; font-size: 14.5px; font-weight: 600; color: var(--brand); display: inline-flex; align-items: center; gap: 6px; }
.card-link::after { content: "→"; transition: transform var(--t); }
.card:hover .card-link::after { transform: translateX(4px); }

/* 患者频道配色变体 */
.card--teal .card-icon { background: var(--teal-50); color: var(--teal); }
.card--teal:hover { border-color: var(--teal); }
.card--teal .card-link { color: var(--teal); }

/* 点击整卡 */
.card--link { color: inherit; }
.card--link:hover { color: inherit; }

/* ---------- 10. 左文右图 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split--reverse .split-media { order: -1; }
.split-body h2 { font-size: 32px; margin-bottom: 18px; }
.split-body > p { color: var(--ink-5); font-size: 16px; }
.split-media {
  position: relative; border-radius: var(--r-lg); overflow: hidden;
  aspect-ratio: 4 / 3; background: var(--line-soft);
}
.split-media img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.06); }
.split-media::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(80% 70% at 100% 100%, rgba(15, 23, 42, .34) 0%, rgba(15, 23, 42, 0) 55%);
}

/* 带勾选的能力清单 */
.check-list { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 12px; }
.check-list li { position: relative; padding-left: 30px; font-size: 15px; color: var(--ink-3); margin: 0; }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: 3px;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--brand-50) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230e7490' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center / 10px no-repeat;
}
.check-list--teal li::before {
  background: var(--teal-50) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230f6e56' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center / 10px no-repeat;
}

/* ---------- 11. 流程步骤 ---------- */
.steps { display: grid; gap: 20px; counter-reset: step; }
.steps--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.steps--5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.step { position: relative; padding-top: 8px; }
.step-num {
  width: 40px; height: 40px; border-radius: 50%; margin-bottom: 16px;
  background: var(--brand); color: #fff; font-weight: 600; font-size: 15px;
  display: flex; align-items: center; justify-content: center;
  font-variant-numeric: tabular-nums;
}
.step h4 { font-size: 16px; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--ink-5); margin: 0; }
.steps--teal .step-num { background: var(--teal); }

/* 连接线 */
.steps--4 .step:not(:last-child)::after,
.steps--5 .step:not(:last-child)::after {
  content: ""; position: absolute; top: 28px; left: 52px; right: 4px;
  height: 1px; background: repeating-linear-gradient(90deg, var(--line) 0 5px, transparent 5px 10px);
}

/* ---------- 12. 案例卡 ---------- */
.case {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--r);
  overflow: hidden; transition: all var(--t); display: flex; flex-direction: column; height: 100%;
}
.case:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); border-color: var(--brand-100); }
.case-top { padding: 24px 26px 0; }
.case-type {
  display: inline-block; font-size: 12px; font-weight: 600; padding: 3px 11px;
  border-radius: var(--r-full); background: var(--brand-50); color: var(--brand-dark);
  border: 1px solid var(--brand-100); margin-bottom: 14px;
}
.case h3 { font-size: 18px; margin-bottom: 10px; }
.case-brief { font-size: 14.5px; color: var(--ink-5); margin: 0 0 18px; }
.case-metrics {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  background: var(--line); border-top: 1px solid var(--line); margin-top: auto;
}
.case-metric { background: var(--white); padding: 16px 12px; text-align: center; }
.case-metric b { display: block; font-size: 20px; color: var(--brand-dark); font-variant-numeric: tabular-nums; }
.case-metric span { font-size: 12px; color: var(--ink-6); }

/* ---------- 13. 资质 / 信任 ---------- */
.badges { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }
.badge {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 11px 20px; border-radius: var(--r-full);
  background: var(--white); border: 1px solid var(--line);
  font-size: 14px; color: var(--ink-3); font-weight: 500;
}
.badge svg { width: 17px; height: 17px; color: var(--brand); flex: 0 0 17px; }

/* ---------- 14. 常见问题 ---------- */
.faq { display: grid; gap: 12px; max-width: var(--narrow); margin: 0 auto; }
.faq-item { border: 1px solid var(--line); border-radius: var(--r); background: var(--white); overflow: hidden; }
.faq-item[open] { border-color: var(--brand-100); box-shadow: var(--shadow-sm); }
.faq-q {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 18px;
  padding: 20px 24px; font-size: 16px; font-weight: 600; cursor: pointer;
  list-style: none; color: var(--ink);
}
.faq-q::-webkit-details-marker { display: none; }
.faq-q::after {
  content: ""; flex: 0 0 18px; width: 18px; height: 18px; margin-top: 3px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2.5' stroke-linecap='round'%3E%3Cline x1='12' y1='5' x2='12' y2='19'/%3E%3Cline x1='5' y1='12' x2='19' y2='12'/%3E%3C/svg%3E") center / contain no-repeat;
  transition: transform var(--t);
}
.faq-item[open] .faq-q::after { transform: rotate(45deg); }
.faq-a { padding: 0 24px 22px; font-size: 15px; color: var(--ink-4); line-height: 1.8; }
.faq-a p:last-child { margin-bottom: 0; }

/* ---------- 15. 表单 ---------- */
.form-card {
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 36px; box-shadow: var(--shadow);
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: 14px; font-weight: 600; color: var(--ink-3); }
.field label .req { color: var(--accent); margin-left: 3px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; font-size: 15px; font-family: inherit;
  color: var(--ink); background: var(--white);
  border: 1px solid var(--line); border-radius: var(--r-sm);
  transition: border-color var(--t), box-shadow var(--t);
}
.field textarea { resize: vertical; min-height: 96px; line-height: 1.6; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(14, 116, 144, .12);
}
.field input::placeholder, .field textarea::placeholder { color: var(--ink-6); }

/* 身份切换 */
.role-switch { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 24px; }
.role-switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.role-switch label {
  display: flex; align-items: center; gap: 10px; cursor: pointer;
  padding: 14px 18px; border: 1.5px solid var(--line); border-radius: var(--r-sm);
  font-size: 15px; font-weight: 600; color: var(--ink-4); transition: all var(--t);
  background: var(--white);
}
.role-switch label::before {
  content: ""; width: 18px; height: 18px; flex: 0 0 18px; border-radius: 50%;
  border: 2px solid var(--ink-6); transition: all var(--t);
}
.role-switch input:checked + label { border-color: var(--brand); background: var(--brand-50); color: var(--brand-dark); }
.role-switch input:checked + label::before { border-color: var(--brand); border-width: 5px; }
.role-switch input:focus-visible + label { outline: 2px solid var(--brand); outline-offset: 2px; }

/* 表单提示 */
.form-note { font-size: 13px; color: var(--ink-6); margin: 16px 0 0; line-height: 1.7; }
.form-note a { text-decoration: underline; }
.form-msg {
  display: none; margin-top: 16px; padding: 13px 16px; border-radius: var(--r-sm);
  font-size: 14px; background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0;
}
.form-msg.is-error { background: #fef2f2; color: #991b1b; border-color: #fecaca; }
.form-msg.is-visible { display: block; }

/* ---------- 16. 客户评价 ---------- */
.quote {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--r);
  padding: 26px; height: 100%; display: flex; flex-direction: column;
}
.quote p { font-size: 15px; color: var(--ink-3); line-height: 1.8; flex: 1; }
.quote-who { display: flex; align-items: center; gap: 12px; margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--line-soft); }
.quote-avatar {
  width: 42px; height: 42px; border-radius: 50%; flex: 0 0 42px;
  background: var(--brand-50); color: var(--brand-dark);
  display: flex; align-items: center; justify-content: center; font-weight: 600; font-size: 15px;
}
.quote-who b { display: block; font-size: 14.5px; }
.quote-who span { font-size: 13px; color: var(--ink-6); }

/* ---------- 17. 价格表 ---------- */
.price-table { width: 100%; border-collapse: collapse; font-size: 15px; background: var(--white); }
.price-table th, .price-table td { padding: 15px 18px; text-align: left; border-bottom: 1px solid var(--line); }
.price-table th { background: var(--bg); font-size: 13.5px; font-weight: 600; color: var(--ink-4); white-space: nowrap; }
.price-table tbody tr:last-child td { border-bottom: none; }
.price-table td strong { color: var(--teal-dark); font-variant-numeric: tabular-nums; }
.price-wrap { border: 1px solid var(--line); border-radius: var(--r); overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* ---------- 18. 提示条 ---------- */
.notice {
  border-left: 3px solid var(--brand); background: var(--brand-50);
  padding: 16px 20px; border-radius: 0 var(--r-sm) var(--r-sm) 0;
  font-size: 14.5px; color: var(--ink-3); margin: 0 0 20px;
}
.notice--warn { border-left-color: var(--accent); background: var(--accent-50); }
.notice--teal { border-left-color: var(--teal); background: var(--teal-50); }
.notice b { color: var(--ink); }

/* ---------- 19. CTA 区块 ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--brand-dark) 0%, var(--brand) 55%, var(--teal) 100%);
  color: #fff; padding: 72px 0;
}
.cta-band h2 { font-size: 32px; color: #fff; margin-bottom: 14px; }
.cta-band p { color: rgba(255, 255, 255, .85); font-size: 16px; max-width: 620px; margin: 0 0 28px; }

/* ---------- 20. 页脚 ---------- */
.site-footer { background: var(--ink); color: var(--ink-6); padding: 64px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 48px; }
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand .logo-name { color: #fff; }
.footer-brand .logo-sub { color: var(--ink-6); }
.footer-brand p { color: var(--ink-6); font-size: 14px; line-height: 1.8; margin: 0 0 18px; max-width: 320px; }
.footer-contact { display: grid; gap: 10px; }
.footer-contact a, .footer-contact span { color: #cbd5e1; display: flex; align-items: center; gap: 9px; }
.footer-contact a:hover { color: #fff; }
.footer-contact svg { width: 15px; height: 15px; flex: 0 0 15px; color: var(--accent); }
.footer-col h4 { color: #fff; font-size: 15px; margin: 0 0 18px; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 11px; }
.footer-col a { color: var(--ink-6); font-size: 14px; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1); padding: 24px 0 28px;
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 14px;
  font-size: 13px; color: var(--ink-5);
}
.footer-bottom a { color: var(--ink-5); }
.footer-bottom a:hover { color: #fff; }
.footer-bottom .sep { margin: 0 8px; opacity: .5; }

/* ---------- 21. 移动端悬浮操作条 ---------- */
.mobile-bar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 90;
  display: none; grid-template-columns: 1fr 1fr;
  background: var(--white); border-top: 1px solid var(--line);
  padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
  gap: 10px; box-shadow: 0 -4px 16px rgba(15, 23, 42, .07);
}
.mobile-bar .btn { padding: 12px 10px; font-size: 15px; }

/* ---------- 22. 滚动进场动画 ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- 23. 工具类 ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-32 { margin-bottom: 32px; }
.lead { font-size: 17px; color: var(--ink-5); }

/* ============================================================
   24. 响应式
   ============================================================ */
@media (max-width: 1080px) {
  .header-phone { display: none; }
  .hero h1 { font-size: 44px; }
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps--5 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .steps--5 .step:nth-child(3)::after { display: none; }
}

@media (max-width: 900px) {
  :root { --section-y: 64px; }
  .nav, .header-actions .btn--outline { display: none; }
  .nav-toggle { display: flex; }
  .header-inner { gap: 12px; }
  .header-actions { margin-left: auto; }
  .header-actions .btn--primary { display: none; }
  .mobile-bar { display: grid; }
  body { padding-bottom: 68px; }

  .split { grid-template-columns: 1fr; gap: 32px; }
  .split--reverse .split-media { order: 0; }
  .split-body h2 { font-size: 26px; }
  .section-head h2 { font-size: 26px; }
  .hero h1 { font-size: 34px; }
  .hero { padding: 64px 0 72px; }
  .hero-sub { font-size: 16px; }
  .page-hero { padding: 48px 0 44px; }
  .page-hero h1 { font-size: 28px; }
  .page-hero p { font-size: 15.5px; }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps--4, .steps--5 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps--4 .step::after, .steps--5 .step::after { display: none; }
  .form-grid { grid-template-columns: 1fr; }
  .form-card { padding: 26px 22px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 640px) {
  .container { padding: 0 18px; }
  .hero h1 { font-size: 29px; }
  .hero-sub { font-size: 15.5px; }
  .stat-num { font-size: 30px; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .entry-grid { grid-template-columns: 1fr; }
  .entry { padding: 22px 20px; }
  .role-switch { grid-template-columns: 1fr; }
  .case-metrics { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .btn-group { flex-direction: column; }
  .btn-group .btn { width: 100%; }
  .logo-sub { display: none; }
  .section-head { margin-bottom: 36px; }
}

/* ---------- 25. 偏好设置 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- 26. 打印 ---------- */
@media print {
  .site-header, .mobile-bar, .drawer, .cta-band { display: none !important; }
  body { padding-bottom: 0; font-size: 12pt; }
  .section { padding: 16pt 0; }
}