/* ============================================================
   北京诚立会计（集团）有限公司 — 全站样式 v3（精致层次版）
   域名：chengli.bj.cn | 定位：北京公司注册 + 代理记账 GEO获客子站
   设计语言：深蓝 × 财会绿 × 品牌金，大留白 + 渐变光影 + 卡片层次
   ============================================================ */

:root {
  --primary: #1a3a6b;
  --primary-dark: #16325b;
  --primary-deep: #0f2444;
  --accent: #18a47c;
  --accent-dark: #0e7d5e;
  --gold: #c9a86a;
  --gold-light: #e0c48b;
  --navy: #1a3a6b;
  --navy-800: #16325b;
  --navy-900: #0f2444;
  --gold-600: #b8935a;
  --bg: #f6fafd;
  --surface: #ffffff;
  --text: #1b2a38;
  --text-sub: #5d7080;
  --border: #e6eef4;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow-sm: 0 2px 10px rgba(15, 36, 68, .06);
  --shadow: 0 8px 30px rgba(15, 36, 68, .10);
  --shadow-lg: 0 20px 50px rgba(15, 36, 68, .18);
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", -apple-system, "Segoe UI", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; transition: all .2s; }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
/* 图片统一按 width/height 属性占位，height:auto 由 CSS 覆盖，避免宽高属性导致拉伸 */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ============ 顶栏 ============ */
.topbar {
  background: linear-gradient(90deg, var(--primary-deep), var(--primary-dark));
  color: #cfe2ef; font-size: 13px;
}
.topbar-inner {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 24px; max-width: 1200px; margin: 0 auto; gap: 12px;
}
.topbar a { color: #fff; font-weight: 600; }
.topbar a:hover { color: var(--gold-light); }

/* ============ 导航 ============ */
.site-header {
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
  box-shadow: 0 2px 20px rgba(8,80,122,.05);
}
.header-inner { display: flex; align-items: center; gap: 40px; height: 76px; }

.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark { width: 46px; height: 46px; flex-shrink: 0; color: #1a365d; filter: drop-shadow(0 3px 6px rgba(15,36,68,.18)); }
.logo-mark svg { width: 100%; height: 100%; display: block; }
.logo-mark .logo-glyph { fill: #fff; stroke: #fff; }
.logo-txt { display: flex; flex-direction: column; gap: 3px; line-height: 1.18; }
.logo-txt strong { font-size: 20px; font-weight: 700; color: var(--navy); letter-spacing: 2px; }
.logo-txt small { font-size: 10px; color: var(--gold-600); letter-spacing: 2.2px; font-weight: 700; }
.logo.is-light .logo-mark { color: #fff; }
.logo.is-light .logo-mark .logo-glyph { fill: #16325b; stroke: #16325b; }
.logo.is-light .logo-txt strong { color: #fff; }
.logo.is-light .logo-txt small { color: var(--gold); }

.nav { display: flex; align-items: center; gap: 4px; margin-left: 24px; }
.nav a {
  padding: 9px 14px; border-radius: 10px; color: var(--text);
  font-size: 15px; font-weight: 600; position: relative;
}
.nav a:hover, .nav a.active { color: var(--primary); background: #eef6fb; }
.nav a.cta-btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff; margin-left: 10px; font-weight: 600;
  box-shadow: 0 6px 18px rgba(24,164,124,.35);
}
.nav a.cta-btn:hover { color: #fff; transform: translateY(-1px); }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--primary-deep); margin: 5px 0; transition: .3s; border-radius: 2px; }

/* ============ Hero ============ */
.hero { position: relative; overflow: hidden; background: var(--primary-deep); }
.hero-bg {
  position: absolute; inset: 0;
  background-image: url('../img/biz-team.jpg');
  background-image: image-set(url('../img/biz-team.webp') 1x, url('../img/biz-team.jpg') 1x);
  background-size: cover; background-position: center; opacity: .22;
  filter: saturate(.85);
}
.hero-overlay {
  position: absolute; inset: 0;
  background:
    radial-gradient(120% 140% at 85% 0%, rgba(24,164,124,.35) 0%, transparent 55%),
    radial-gradient(100% 120% at 0% 100%, rgba(201,162,39,.22) 0%, transparent 50%),
    linear-gradient(115deg, rgba(5,50,77,.96) 0%, rgba(8,80,122,.92) 55%, rgba(9,84,70,.90) 100%);
}
.hero-inner { position: relative; z-index: 2; padding: 96px 24px 88px; max-width: 1200px; margin: 0 auto; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(232,201,106,.4);
  padding: 7px 16px; border-radius: 100px; font-size: 13.5px; margin-bottom: 26px;
  color: var(--gold-light); letter-spacing: .5px;
}
.hero h1 {
  font-size: clamp(28px, 4.8vw, 48px); line-height: 1.28; font-weight: 800;
  margin-bottom: 20px; max-width: 860px; letter-spacing: .5px; color: #fff;
}
.hero h1 .hl { color: var(--gold-light); }
.hero-sub { font-size: 17.5px; color: #d4e6f2; max-width: 800px; margin-bottom: 34px; }

.hero-trust { display: flex; flex-wrap: wrap; gap: 12px 26px; margin-bottom: 42px; }
.hero-trust li {
  list-style: none; display: flex; align-items: center; gap: 9px;
  font-size: 15px; color: #e6f0f7;
}
.hero-trust li::before {
  content: "✓"; color: #5fe0b0; font-weight: 800;
  width: 22px; height: 22px; border-radius: 50%;
  background: rgba(95,224,176,.16); display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px; flex-shrink: 0; border: 1px solid rgba(95,224,176,.3);
}

.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 15px 34px; border-radius: 12px;
  font-size: 16px; font-weight: 600; text-align: center; transition: .25s;
  cursor: pointer; border: none;
}
.btn-white { background: #fff; color: var(--primary-deep); box-shadow: 0 8px 24px rgba(0,0,0,.2); }
.btn-white:hover { transform: translateY(-3px); box-shadow: 0 14px 34px rgba(0,0,0,.28); color: var(--primary-deep); }
.btn-outline { background: rgba(255,255,255,.06); border: 1.5px solid rgba(255,255,255,.55); color: #fff; backdrop-filter: blur(4px); }
.btn-outline:hover { background: rgba(255,255,255,.16); color: #fff; transform: translateY(-3px); }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-dark)); color: #fff; box-shadow: 0 8px 22px rgba(24,164,124,.4); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 14px 32px rgba(24,164,124,.5); color: #fff; }
.btn-gold { background: linear-gradient(135deg, var(--gold), #a8831a); color: #fff; box-shadow: 0 8px 22px rgba(201,162,39,.4); }
.btn-gold:hover { transform: translateY(-3px); color: #fff; box-shadow: 0 14px 32px rgba(201,162,39,.5); }
.btn-lg { padding: 16px 40px; font-size: 17px; }

/* ============ 区块通用 ============ */
.section { padding: 88px 0; position: relative; }
.section-alt { background: var(--surface); }
.section-gray { background: #eef4f9; }

.section-title { text-align: center; margin-bottom: 48px; }
.section-title .eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 3px;
  color: var(--accent); text-transform: uppercase; margin-bottom: 12px;
}
.section-title h2 {
  font-size: clamp(26px, 3.6vw, 36px); font-weight: 800; color: var(--primary-deep);
  margin-bottom: 14px; letter-spacing: .5px;
}
.section-title p { color: var(--text-sub); font-size: 16.5px; max-width: 700px; margin: 0 auto; }
.section-title .title-bar {
  width: 60px; height: 4px; border-radius: 4px;
  background: linear-gradient(90deg, var(--gold), var(--accent));
  margin: 18px auto 0;
}
.section-title.left { text-align: left; }
.section-title.left p { margin: 0; }
.section-title.left .title-bar { margin-left: 0; }
.section-title.left .eyebrow { color: var(--gold); }

/* ============ 卡片网格 ============ */
.grid { display: grid; gap: 26px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--surface); border-radius: var(--radius);
  border: 1px solid var(--border); padding: 34px 30px;
  box-shadow: var(--shadow-sm); transition: .3s;
  position: relative; overflow: hidden;
}
.card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0; transition: .3s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: #d3e4f0; }
.card:hover::before { opacity: 1; }
.card-icon {
  width: 58px; height: 58px; border-radius: 16px; margin-bottom: 20px;
  display: flex; align-items: center; justify-content: center; font-size: 28px;
  background: linear-gradient(135deg, #eef4fb, #e6f4ee);
  box-shadow: inset 0 0 0 1px rgba(26,58,107,.08), 0 6px 16px rgba(26,58,107,.06);
  transition: transform .3s;
}
.card:hover .card-icon { transform: scale(1.08) rotate(-3deg); }
.card h3 { font-size: 19px; margin-bottom: 10px; color: var(--primary-deep); }
.card p { color: var(--text-sub); font-size: 15px; }

/* 价格卡片高亮 */
.card.price-card {
  text-align: center; padding: 40px 28px;
  border-top: 3px solid transparent;
  background: linear-gradient(180deg, #ffffff, #fbfdff);
}
.card.price-card:hover { border-top-color: var(--gold); }
.card.price-card h3 { font-size: 17px; color: var(--text-sub); font-weight: 600; margin-bottom: 6px; }
.card.price-card:nth-child(2) {
  border-top-color: var(--gold);
  box-shadow: 0 12px 40px rgba(201,168,106,.22);
  position: relative;
}
.card.price-card:nth-child(2)::after {
  content: "推荐"; position: absolute; top: 14px; right: -34px;
  background: linear-gradient(135deg, var(--gold), #a8831a); color: #fff;
  font-size: 12px; padding: 4px 34px; transform: rotate(45deg);
}

/* 落单卡片：横跨整行变横条卡，避免右侧空白 */
.grid-3 > .card:last-child:nth-child(3n+1) {
  grid-column: 1 / -1;
  display: grid; grid-template-columns: auto 1fr;
  column-gap: 22px; row-gap: 4px; align-items: center;
  padding: 26px 30px;
  background: linear-gradient(120deg, #ffffff, #f3f9fd);
}
.grid-3 > .card:last-child:nth-child(3n+1) .card-icon { grid-row: 1 / 3; margin-bottom: 0; }
.grid-3 > .card:last-child:nth-child(3n+1) h3 { margin-bottom: 0; grid-column: 2; }
.grid-3 > .card:last-child:nth-child(3n+1) p { grid-column: 2; }

/* ============ 信任数据条 ============ */
.trust-strip {
  position: relative; overflow: hidden;
  background: linear-gradient(120deg, var(--primary-deep), var(--primary-dark));
}
.trust-strip::before {
  content: ""; position: absolute; left: -80px; bottom: -80px;
  width: 260px; height: 260px; border-radius: 50%;
  background: radial-gradient(circle, rgba(232,201,106,.14), transparent 70%);
}
.trust-strip::after {
  content: ""; position: absolute; right: -60px; top: -60px;
  width: 220px; height: 220px; border-radius: 50%;
  background: radial-gradient(circle, rgba(24,164,124,.14), transparent 70%);
}
.trust-strip-inner {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
  padding: 44px 24px; max-width: 1200px; margin: 0 auto; position: relative; z-index: 2;
}
.trust-item { text-align: center; color: #fff; }
.trust-item .num { font-size: 38px; font-weight: 800; color: var(--gold-light); letter-spacing: 1px; line-height: 1.1; }
.trust-item .label { font-size: 14px; color: #c6dbe9; margin-top: 6px; }

/* ============ 业务入口卡片 ============ */
.entry-card {
  position: relative; overflow: hidden; border-radius: 22px;
  padding: 46px 42px; color: #fff; min-height: 300px;
  display: flex; flex-direction: column; justify-content: space-between;
  transition: .35s;
}
.entry-card::after {
  content: ""; position: absolute; right: -60px; top: -60px;
  width: 240px; height: 240px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.16), transparent 70%);
}
.entry-card::before {
  content: ""; position: absolute; left: -60px; bottom: -60px;
  width: 200px; height: 200px; border-radius: 50%;
  background: radial-gradient(circle, rgba(232,201,106,.18), transparent 70%);
}
.entry-card.register { background: linear-gradient(135deg, #0a6390, #0d84b8); box-shadow: var(--shadow-lg); }
.entry-card.accounting { background: linear-gradient(135deg, #0f7e61, #18a47c); box-shadow: var(--shadow-lg); }
.entry-card:hover { transform: translateY(-8px); box-shadow: 0 26px 60px rgba(8,80,122,.3); }
.entry-card .entry-tag {
  display: inline-flex; align-items: center; gap: 6px; align-self: flex-start;
  background: rgba(255,255,255,.16); border-radius: 100px;
  font-size: 12.5px; padding: 5px 14px; margin-bottom: 18px; letter-spacing: 1px;
}
.entry-card .entry-icon {
  width: 64px; height: 64px; border-radius: 18px; font-size: 32px;
  background: rgba(255,255,255,.14); display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; backdrop-filter: blur(4px);
}
.entry-card h3 { font-size: 28px; margin-bottom: 14px; letter-spacing: 1px; }
.entry-card p { color: rgba(255,255,255,.86); font-size: 15.5px; margin-bottom: 24px; flex: 1; line-height: 1.8; }
.entry-card .btn { align-self: flex-start; }
.entry-card .btn-white { color: var(--primary-deep); }

/* ============ 步骤流程 ============ */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.step-card {
  position: relative; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 36px 28px 28px; box-shadow: var(--shadow-sm); transition: .3s;
  overflow: hidden;
}
.step-card::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--navy), var(--accent));
  opacity: 0; transition: .3s;
}
.step-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.step-card:hover::after { opacity: 1; }
.step-num {
  position: absolute; top: -22px; left: 28px;
  width: 46px; height: 46px; border-radius: 14px;
  background: linear-gradient(135deg, var(--navy), var(--accent));
  color: #fff; font-weight: 800; font-size: 19px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 18px rgba(26,58,107,.35);
  z-index: 2;
}
.step-card h3 { font-size: 18px; margin: 14px 0 10px; color: var(--primary-deep); }
.step-card p { color: var(--text-sub); font-size: 15px; }

/* ============ 表格 ============ */
.table-wrap {
  overflow-x: auto; background: var(--surface); border-radius: var(--radius);
  border: 1px solid var(--border); box-shadow: var(--shadow);
}
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { padding: 16px 20px; text-align: left; border-bottom: 1px solid var(--border); }
th { background: linear-gradient(180deg, #eef4fb, #e6eef9); color: var(--primary-deep); font-weight: 700; white-space: nowrap; }
tbody td:first-child { color: var(--navy); font-weight: 600; }
tr:last-child td { border-bottom: none; }
tbody tr { transition: background .2s; }
tbody tr:hover { background: #f6fbfe; }
td.price { color: var(--accent-dark); font-weight: 700; white-space: nowrap; }
.table-note { font-size: 13px; color: var(--text-sub); margin-top: 10px; }

/* ============ 提示框 ============ */
.note-box {
  background: #fff9ec; border-left: 4px solid var(--gold);
  padding: 18px 22px; border-radius: 12px; margin: 22px 0; font-size: 15px; color: #6b5420;
  box-shadow: var(--shadow-sm);
}
.note-box.green { background: #ecf8f2; border-color: var(--accent); color: #14513e; }
.note-box.blue { background: #ecf4fb; border-color: var(--primary); color: #0a4a6b; }

/* ============ FAQ ============ */
.faq { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: var(--surface); border: 1px solid var(--border); border-radius: 14px;
  margin-bottom: 16px; overflow: hidden; transition: .25s; box-shadow: var(--shadow-sm);
}
.faq-item:hover { border-color: #c8e0ee; }
.faq-item.open { box-shadow: var(--shadow); border-color: #b8d6e8; }
.faq-q {
  width: 100%; text-align: left; background: none; border: none; cursor: pointer;
  padding: 20px 26px; font-size: 16.5px; font-weight: 600; color: var(--primary-deep);
  display: flex; justify-content: space-between; align-items: center; gap: 14px;
  font-family: var(--font);
}
.faq-q .mark { color: var(--gold); font-weight: 800; flex-shrink: 0; }
.faq-q .arrow {
  transition: .3s; color: var(--text-sub); flex-shrink: 0;
  width: 26px; height: 26px; border-radius: 50%; background: #f0f6fa;
  display: flex; align-items: center; justify-content: center; font-size: 14px;
}
.faq-item.open .arrow { transform: rotate(180deg); color: #fff; background: var(--accent); }
.faq-a { display: none; margin: 0 26px 24px; padding: 18px 0 0; color: var(--text-sub); font-size: 15.5px; border-top: 1px dashed var(--border); line-height: 1.9; }
.faq-item.open .faq-a { display: block; }

/* ============ 知识库列表 ============ */
.article-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; align-items: stretch; }
.article-item {
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  padding: 26px 30px; box-shadow: var(--shadow-sm); transition: .28s;
  display: flex; justify-content: space-between; align-items: center; gap: 22px;
}
.article-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: #c8e0ee; }
.article-item h3 { font-size: 18.5px; color: var(--primary-deep); margin-bottom: 8px; }
.article-item .meta { font-size: 13.5px; color: var(--text-sub); }
.article-item .go {
  width: 42px; height: 42px; border-radius: 50%; flex-shrink: 0;
  background: #eef6fb; color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  transition: .28s; font-size: 19px;
}
.article-item:hover .go { background: var(--primary); color: #fff; transform: translateX(3px); }
.article-tag {
  display: inline-block; background: linear-gradient(135deg, #eaf3fb, #e6f6f0);
  color: var(--primary); font-size: 12px; padding: 4px 13px; border-radius: 100px;
  margin-bottom: 10px; font-weight: 600;
}

/* ============ 文章正文 ============ */
.article-body { max-width: 800px; }
.article-body h2 {
  font-size: 25px; color: var(--primary-deep); margin: 40px 0 16px;
  padding-left: 16px; border-left: 4px solid var(--gold);
  position: relative;
}
.article-body h2::after {
  content: ""; position: absolute; left: 0; bottom: -8px;
  width: 100%; height: 1px; background: linear-gradient(90deg, rgba(201,168,106,.35), transparent);
}
.article-body h3 { font-size: 19.5px; color: var(--primary-deep); margin: 26px 0 12px; }
.article-body p { margin-bottom: 15px; color: #33434f; }
.article-body ul, .article-body ol { margin: 0 0 18px 24px; color: #33434f; }
.article-body li { margin-bottom: 7px; }
.article-lead {
  background: linear-gradient(135deg, #eef4fb, #e9f5ef);
  border-left: 4px solid var(--accent);
  padding: 22px 26px; border-radius: 14px; font-size: 17px; font-weight: 600;
  color: var(--primary-deep); margin: 22px 0 30px; line-height: 1.9; box-shadow: var(--shadow-sm);
}
.article-date { color: #9fc3d8; font-size: 14px; margin-bottom: 20px; }

/* ============ 页脚 ============ */
/* 相关阅读（GEO 内容关联） */
.related-reading { padding: 52px 0 8px; }
.related-reading .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.related-reading h2 { font-size: 24px; color: var(--primary-deep); margin-bottom: 24px; font-weight: 800; position: relative; padding-left: 16px; }
.related-reading h2::before { content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 5px; height: 22px; border-radius: 3px; background: var(--gold); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.related-card {
  display: block; padding: 20px 22px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text); font-size: 15.5px; font-weight: 600; line-height: 1.6;
  text-decoration: none; transition: all .22s ease; position: relative;
}
.related-card::after { content: "→"; position: absolute; right: 18px; top: 50%; transform: translateY(-50%); color: var(--gold-600); font-size: 18px; opacity: 0; transition: all .22s ease; }
.related-card:hover { border-color: var(--gold); color: var(--primary-deep); box-shadow: var(--shadow-sm); transform: translateY(-2px); padding-right: 44px; }
.related-card:hover::after { opacity: 1; right: 20px; }
@media (max-width: 860px) {
  .related-grid { grid-template-columns: 1fr; }
}

.site-footer { background: linear-gradient(180deg, #062f45, #042438); color: #b8cdda; margin-top: 60px; }
.footer-inner {
  max-width: 1200px; margin: 0 auto; padding: 64px 24px 40px;
  display: grid; grid-template-columns: 2.1fr 1fr 1fr 1.3fr; gap: 40px;
}
.footer-brand p { margin-top: 18px; font-size: 14px; line-height: 1.95; color: #9db8c8; }
.footer-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.footer-tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; font-size: 13px; color: #cfe0ea;
  background: rgba(255,255,255,.06); border: 1px solid rgba(201,168,106,.35);
  border-radius: 999px; line-height: 1;
}
.footer-tag::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--gold); flex-shrink: 0; }
.footer-tag:hover { background: rgba(201,168,106,.16); border-color: var(--gold); color: #fff; }
.footer-col h3 { color: #fff; font-size: 16px; margin-bottom: 20px; position: relative; padding-bottom: 12px; }
.footer-col h3::after { content: ""; position: absolute; left: 0; bottom: 0; width: 30px; height: 2px; background: var(--gold); border-radius: 2px; }
.footer-col a { display: block; color: #b8cdda; font-size: 14px; margin-bottom: 12px; }
.footer-col a:hover { color: var(--gold-light); }
.footer-contact-item { display: flex; gap: 10px; margin-bottom: 13px; font-size: 14px; align-items: flex-start; }
.footer-contact-item .fi { color: var(--gold-light); flex-shrink: 0; }
.footer-qr { background: #fff; border-radius: 12px; padding: 6px; width: 112px; margin-top: 10px; box-shadow: 0 4px 14px rgba(0,0,0,.3); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  max-width: 1200px; margin: 0 auto; padding: 22px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  flex-wrap: wrap;
  font-size: 13px; color: #7f9aa8;
}
.footer-bottom .footer-links { display: flex; align-items: center; gap: 16px; }
.footer-bottom a { color: #7f9aa8; text-decoration: none; }
.footer-bottom a:hover { color: var(--gold-light); }

/* ============ 页面 Hero（内页） ============ */
.page-hero {
  position: relative; overflow: hidden;
  background: linear-gradient(120deg, var(--primary-deep), var(--primary-dark));
  color: #fff; padding: 72px 24px 60px;
}
.page-hero::after {
  content: ""; position: absolute; right: -70px; top: -70px;
  width: 300px; height: 300px; border-radius: 50%;
  background: radial-gradient(circle, rgba(201,168,106,.18), transparent 70%);
}
.page-hero::before {
  content: ""; position: absolute; left: -60px; bottom: -60px;
  width: 240px; height: 240px; border-radius: 50%;
  background: radial-gradient(circle, rgba(24,164,124,.16), transparent 70%);
}
.page-hero-inner { max-width: 1200px; margin: 0 auto; position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(28px, 4vw, 40px); font-weight: 800; margin-bottom: 14px; letter-spacing: .5px; }
.page-hero h1::after {
  content: ""; display: block; width: 64px; height: 4px; border-radius: 4px;
  background: linear-gradient(90deg, var(--gold), var(--accent)); margin-top: 18px;
}
.page-hero p { color: #d3e6f2; font-size: 16.5px; max-width: 760px; }
.breadcrumb { font-size: 13px; color: #8fb6cc; margin-bottom: 20px; }
.breadcrumb a { color: #8fb6cc; }
.breadcrumb a:hover { color: var(--gold-light); }

/* ============ 价格卡片 ============ */
.price-card { text-align: center; }
.price-card .price { font-size: 44px; font-weight: 800; color: var(--accent-dark); margin: 14px 0 6px; letter-spacing: -.5px; }
.price-card .price small { font-size: 16px; color: var(--text-sub); font-weight: 400; }

/* ============ 联系页 ============ */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; align-items: stretch; max-width: 900px; margin: 0 auto; }
.contact-info-item {
  display: flex; gap: 18px; padding: 20px 22px;
  background: var(--surface); border-radius: var(--radius); border: 1px solid var(--border);
  box-shadow: var(--shadow-sm); transition: .25s;
}
.contact-info-item:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.contact-info-item .icon {
  width: 50px; height: 50px; border-radius: 14px;
  background: linear-gradient(135deg, #e9f5fc, #dff2ec);
  display: flex; align-items: center; justify-content: center; font-size: 22px; flex-shrink: 0;
}
.contact-info-item strong { display: block; color: var(--primary-deep); margin-bottom: 3px; font-size: 16px; }
.contact-info-item p { color: var(--text-sub); font-size: 15px; }
.contact-info-item p a { font-weight: 600; }

.map-panel { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow); background: var(--surface); }
.map-iframe { width: 100%; height: 400px; border: 0; display: block; }
.map-link { position: relative; display: block; overflow: hidden; }
.map-link img { width: 100%; height: 340px; object-fit: cover; display: block; transition: transform .5s ease; }
.map-link:hover img { transform: scale(1.04); }
.static-map { width: 100%; height: 360px; display: block; background: #f2f5f2; }
.map-pin {
  position: absolute; left: 50%; top: 44%; transform: translate(-50%, -100%);
  width: 40px; height: 40px; pointer-events: none;
  animation: map-bounce 1.6s ease-in-out infinite;
}
.map-pin-dot {
  position: absolute; inset: 0; border-radius: 50% 50% 50% 0;
  background: #e64a3b; transform: rotate(-45deg);
  box-shadow: 0 6px 18px rgba(230,74,59,.5);
}
.map-pin-dot::after {
  content: ""; position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%);
  width: 14px; height: 14px; border-radius: 50%; background: #fff;
}
@keyframes map-bounce {
  0%, 100% { margin-top: 0; }
  50% { margin-top: -10px; }
}
.map-open {
  position: absolute; right: 14px; top: 14px; padding: 8px 16px;
  background: rgba(4,36,56,.82); color: #fff; font-size: 13px; border-radius: 999px;
  backdrop-filter: blur(4px); pointer-events: none;
}
.map-meta { padding: 18px 22px; border-top: 1px solid var(--border); }
.map-meta-title { font-size: 16px; font-weight: 700; color: var(--primary-deep); margin-bottom: 8px; }
.map-meta-addr { font-size: 14.5px; color: var(--text-sub); line-height: 1.7; margin-bottom: 6px; }
.map-meta-tip { font-size: 13px; color: #8aa4b5; }

.qr-panel {
  background: linear-gradient(135deg, var(--primary-deep), var(--primary-dark));
  border-radius: var(--radius); padding: 44px 40px; color: #fff; text-align: center;
  box-shadow: var(--shadow-lg);
  position: relative; overflow: hidden;
}
.qr-panel::before {
  content: ""; position: absolute; right: -70px; top: -70px;
  width: 220px; height: 220px; border-radius: 50%;
  background: radial-gradient(circle, rgba(201,168,106,.22), transparent 70%);
}
.qr-panel::after {
  content: ""; position: absolute; left: -60px; bottom: -60px;
  width: 200px; height: 200px; border-radius: 50%;
  background: radial-gradient(circle, rgba(24,164,124,.18), transparent 70%);
}
.qr-panel > * { position: relative; z-index: 2; }
.qr-panel h3 { font-size: 24px; margin-bottom: 10px; }
.qr-panel p { color: #cfe2ef; font-size: 15px; margin-bottom: 26px; }
.qr-panel img {
  width: 220px; border-radius: 16px; margin: 0 auto 22px;
  border: 6px solid #fff; box-shadow: 0 10px 30px rgba(0,0,0,.3);
}

/* ============ 二维码弹窗 ============ */
.qr-modal {
  display: none; position: fixed; inset: 0; z-index: 200;
  background: rgba(4,36,56,.66); backdrop-filter: blur(5px);
  align-items: center; justify-content: center; padding: 20px;
}
.qr-modal.open { display: flex; }
.qr-modal-card {
  background: #fff; border-radius: 22px; padding: 38px 42px;
  max-width: 400px; width: 100%; text-align: center; position: relative;
  box-shadow: 0 30px 80px rgba(0,0,0,.4);
  animation: popIn .3s ease;
}
@keyframes popIn { from { transform: scale(.9); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.qr-modal-card img { border-radius: 14px; margin: 20px auto; width: 260px; border: 1px solid var(--border); }
.qr-modal-card h3 { color: var(--primary-deep); font-size: 21px; }
.qr-modal-card p { color: var(--text-sub); font-size: 14px; line-height: 1.7; }
.qr-modal-close {
  position: absolute; top: 14px; right: 16px; background: none; border: none;
  font-size: 28px; color: var(--text-sub); cursor: pointer; line-height: 1;
}
.qr-modal-close:hover { color: var(--primary); }

/* 移动端右下角微信标识点击：纯二维码弹层（无标题/×/文字，仅二维码） */
.qr-modal-touch {
  position: fixed; inset: 0; z-index: 220;
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.qr-modal-mask {
  position: absolute; inset: 0; background: rgba(4,36,56,.66); backdrop-filter: blur(5px);
}
.qr-modal-box {
  position: relative; background: #fff; border-radius: 16px; padding: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,.4); animation: popIn .22s ease;
}
.qr-modal-box img { display: block; width: 170px; max-width: none; height: 170px; border-radius: 10px; }

/* ============ 悬浮咨询条 ============ */
.float-contact { position: fixed; right: 24px; bottom: 30px; z-index: 90; display: flex; flex-direction: column; gap: 14px; }
.float-btn {
  width: 56px; height: 56px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; color: #fff; cursor: pointer;
  box-shadow: 0 10px 26px rgba(8,80,122,.32);
  transition: .28s; border: none; position: relative;
}
.float-btn:hover { transform: translateY(-5px) scale(1.05); }
.float-btn.wechat { background: linear-gradient(135deg, #22b573, #148c55); }
.float-btn.phone { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); text-decoration: none; }
.float-btn .tip {
  position: absolute; right: 66px; top: 50%; transform: translateY(-50%);
  background: var(--primary-deep); color: #fff; font-size: 13px;
  padding: 8px 15px; border-radius: 8px; white-space: nowrap;
  opacity: 0; pointer-events: none; transition: .28s; box-shadow: var(--shadow);
}
.float-btn:hover .tip { opacity: 1; }

/* PC 端悬停微信标识：只显示纯二维码浮层（无任何文字），移开消失 */
.float-qr-panel {
  position: absolute; right: 66px; bottom: 0;
  width: 150px; padding: 10px; background: #fff;
  border: 1px solid var(--border); border-radius: 12px;
  box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateX(8px) scale(.96);
  transition: opacity .22s ease, transform .22s ease, visibility .22s;
  pointer-events: none;
}
.float-qr-panel img { display: block; width: 128px; height: 128px; border-radius: 8px; }
.float-btn.wechat:hover .float-qr-panel { opacity: 1; visibility: visible; transform: translateX(0) scale(1); }

/* ============ 图文分栏（关于/服务展示） ============ */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 52px; align-items: center; }
.split-img {
  position: relative; border-radius: 22px; overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.split-img img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .6s; }
.split-img:hover img { transform: scale(1.04); }
.split-img::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(160deg, rgba(26,58,107,.18), transparent 45%);
  pointer-events: none;
}
.split-img .img-badge {
  position: absolute; left: 22px; bottom: 22px; z-index: 2;
  background: rgba(255,255,255,.94); backdrop-filter: blur(6px);
  border-radius: 14px; padding: 12px 20px;
  box-shadow: 0 8px 24px rgba(15,36,68,.25);
}
.split-img .img-badge strong { display: block; color: var(--navy); font-size: 17px; }
.split-img .img-badge small { color: var(--gold-600); font-size: 12px; letter-spacing: 1px; }
.split-txt .eyebrow { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 3px; color: var(--accent); text-transform: uppercase; margin-bottom: 12px; }
.split-txt h2 { font-size: clamp(24px, 3vw, 32px); font-weight: 800; color: var(--navy); margin-bottom: 16px; letter-spacing: .5px; }
.split-txt p { color: var(--text-sub); font-size: 15.5px; margin-bottom: 14px; }
.split-txt .check-list { margin: 18px 0 26px; }
.split-txt .check-list li { list-style: none; display: flex; gap: 10px; align-items: center; margin-bottom: 10px; color: var(--text); font-size: 15px; }
.split-txt .check-list li::before {
  content: "✓"; color: #fff; font-weight: 800; font-size: 12px;
  width: 20px; height: 20px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  display: inline-flex; align-items: center; justify-content: center;
}

/* ============ 图片横幅条（内页） ============ */
.img-banner {
  position: relative; border-radius: var(--radius); overflow: hidden;
  margin-bottom: 44px; box-shadow: var(--shadow);
}
.img-banner img { width: 100%; height: 300px; object-fit: cover; display: block; }
.img-banner .img-banner-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(15,36,68,.78) 0%, rgba(15,36,68,.25) 55%, transparent 100%);
  display: flex; align-items: flex-end; padding: 30px 34px;
}
.img-banner .img-banner-overlay h2 { color: #fff; font-size: 24px; font-weight: 700; letter-spacing: .5px; }
.img-banner .img-banner-overlay p { color: #d8e5f0; font-size: 14.5px; margin-top: 4px; }

/* ============ 响应式 ============ */
@media (max-width: 980px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; }
  .trust-strip-inner { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; gap: 32px; }
  .split-img img { max-height: 340px; }
}
@media (max-width: 768px) {
  .nav { display: none; position: absolute; top: 76px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 14px 20px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-lg); margin-left: 0; }
  .nav.open { display: flex; }
  .nav a { padding: 13px 10px; }
  .nav a.cta-btn { margin-left: 0; text-align: center; }
  .nav-toggle { display: block; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .article-list { grid-template-columns: 1fr; }
  .grid-3 > .card:last-child:nth-child(3n+1) { flex-direction: column; align-items: flex-start; gap: 12px; }
  .hero-inner { padding: 60px 24px 56px; }
  .entry-card { min-height: auto; }
  .article-item { flex-direction: column; align-items: flex-start; }
  .article-item .go { display: none; }
  .logo-txt strong { font-size: 17px; }
  .logo-mark { width: 42px; height: 42px; }
  .section { padding: 64px 0; }
}
@media (max-width: 480px) {
  .footer-inner { grid-template-columns: 1fr; }
  .trust-strip-inner { grid-template-columns: 1fr 1fr; }
  .topbar-inner { flex-direction: column; gap: 4px; }
  .trust-item .num { font-size: 28px; }
}

/* ============================================================
   v4 全面排版优化层（层次感 · 留白节奏 · 细腻动效）
   追加层：不破坏既有结构，仅做视觉增强
   ============================================================ */

/* 1) 区块节奏：给 section 增加更明确的呼吸感与分隔层次 */
.section { padding: 96px 0; }
.section + .section-alt,
.section-alt + .section { position: relative; }
/* 交替区块之间加一条极淡的分隔线，增强层次边界 */
.section-alt { background: linear-gradient(180deg, #ffffff, #fbfdff); }

/* 2) 卡片：更柔和的层次 + 图标色彩分区 */
.card { border-radius: 20px; padding: 36px 30px; }
.card-icon {
  border-radius: 18px;
  background: linear-gradient(135deg, #eef4fb, #e6f4ee);
  box-shadow: 0 8px 20px rgba(26,58,107,.08), inset 0 0 0 1px rgba(26,58,107,.06);
}
/* 为不同卡片图标自动分配差异化配色（按网格位置） */
.grid .card:nth-child(4n+2) .card-icon { background: linear-gradient(135deg, #fff3e0, #ffe9c9); }
.grid .card:nth-child(4n+3) .card-icon { background: linear-gradient(135deg, #e9f5fc, #dff2ec); }
.grid .card:nth-child(4n+4) .card-icon { background: linear-gradient(135deg, #f3eefe, #ece3fb); }

/* 3) 标题：更精致的下划线装饰 */
.section-title .title-bar {
  width: 64px; height: 4px;
  background: linear-gradient(90deg, var(--gold), var(--accent));
  position: relative;
}
.section-title .title-bar::after {
  content: ""; position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 8px; height: 8px; border-radius: 50%; background: #fff;
  box-shadow: 0 0 0 3px var(--gold);
}

/* 4) 滚动显现动画（reveal） */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* 5) 步骤卡：序号更醒目 + 连接线层次 */
.step-card { padding-top: 44px; }
.step-num { top: -20px; box-shadow: 0 10px 24px rgba(26,58,107,.4); }
.step-card::before {
  content: ""; position: absolute; top: 44px; right: -15px;
  width: 30px; height: 2px; background: linear-gradient(90deg, rgba(201,168,106,.5), transparent);
}
.step-card:nth-child(3n)::before, .step-card:last-child::before { display: none; }

/* 6) 表格：斑马纹 + 表头圆角 + 悬停层次 */
.table-wrap { border-radius: 16px; overflow: hidden; }
table th { background: linear-gradient(180deg, #eef4fb, #e6eef9); }
tbody tr:nth-child(even) { background: #fafdff; }
tbody tr:hover { background: #f0f8fd; }
td.price { color: var(--accent-dark); }

/* 7) FAQ：展开态更明显的层次 */
.faq-item { border-radius: 16px; }
.faq-q { font-size: 16.5px; }
.faq-a { padding: 20px 0 0; }

/* 8) CTA 横幅：加装饰光斑与更细腻层次 */
.cta-banner {
  position: relative; overflow: hidden; border-radius: 24px;
  padding: 68px 44px; text-align: center; color: #fff;
  background: linear-gradient(120deg, #0f2444, #1a3a6b);
}
.cta-banner::before,
.cta-banner::after {
  content: ""; position: absolute; border-radius: 50%; pointer-events: none;
}
.cta-banner::before { right: -80px; top: -80px; width: 280px; height: 280px; background: radial-gradient(circle, rgba(201,168,106,.25), transparent 70%); }
.cta-banner::after { left: -60px; bottom: -60px; width: 240px; height: 240px; background: radial-gradient(circle, rgba(24,164,124,.22), transparent 70%); }
.cta-banner > * { position: relative; z-index: 2; }
.cta-banner h2 { font-size: clamp(24px, 3vw, 30px); color: #fff; margin-bottom: 14px; }
.cta-banner p { color: #cfe2ef; margin-bottom: 30px; font-size: 16.5px; }

/* 9) 内页 Hero：增强标题下划线装饰 */
.page-hero h1::after { width: 72px; }

/* 10) 知识库列表卡片：更精致的入口层次 */
.article-item { border-radius: 18px; padding: 28px 30px; }
.article-item .go { background: linear-gradient(135deg, #eef6fb, #e6f4ee); }

/* 11) 联系页卡片：图标渐变统一 */
.contact-info-item { border-radius: 18px; }
.contact-info-item .icon { background: linear-gradient(135deg, #eef4fb, #e6f4ee); }

/* 12) 全局平滑与细节 */
a, button, .card, .step-card, .article-item, .contact-info-item, .entry-card { will-change: transform; }
img { border-radius: 0; }
::selection { background: rgba(24,164,124,.22); color: var(--primary-deep); }

/* 13) 图片柔和圆角（分栏/横幅） */
.split-img { border-radius: 22px; }
.split-img .img-badge { border-radius: 14px; }

/* 14) 响应式补充：小屏下步骤连接线隐藏 */
@media (max-width: 980px) {
  .step-card::before { display: none; }
}
@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .cta-banner { padding: 48px 26px; }
}

/* ============================================================
   42) 移动端顶部菜单：右侧抽屉（对齐 cheng-li.com 移动端交互）
   说明：桌面端 .nav 仍为横向导航；≤1099px 时 .nav 由 JS 移到 body，
        改为固定右侧抽屉，配遮罩 + 关闭按钮 + 底部电话/企微入口。
        推翻第 6 区块 @media(768px) 的“下拉面板”写法；
        阈值抬到 1099px：6 项一级导航 + CTA 单行排布约需 1000px，
        769–1099px 区间横向导航会被挤成单字竖排，改用抽屉。
   ============================================================ */

/* 桌面端：抽屉专用元素全部隐藏 */
.nav-mask { display: none; }
.drawer-head, .drawer-foot { display: none; }

@media (max-width: 1099px) {
  /* --- 汉堡按钮：贴右对齐 + 方形描边 --- */
  .nav-toggle {
    display: inline-flex; margin-left: auto; margin-right: 0;
    width: 42px; height: 42px; padding: 0; flex: none;
    flex-direction: column; align-items: center; justify-content: center; gap: 5px;
    border: 1px solid var(--border); border-radius: 10px;
    background: #fff; color: var(--primary-deep); cursor: pointer;
  }
  .nav-toggle span {
    width: 20px; height: 2px; margin: 0; border-radius: 2px;
    background: currentColor; transition: transform .25s, opacity .2s;
  }

  /* --- 遮罩 --- */
  .nav-mask {
    display: block; position: fixed; inset: 0; z-index: 150;
    background: rgba(9, 24, 42, .5);
    opacity: 0; visibility: hidden;
    transition: opacity .25s ease, visibility .25s ease;
    -webkit-tap-highlight-color: transparent;
  }
  .nav-mask.show { opacity: 1; visibility: visible; }

  /* --- 抽屉本体 --- */
  .nav {
    display: flex; position: fixed; top: 0; right: 0; bottom: 0; left: auto;
    z-index: 160; width: min(84vw, 330px); height: 100%; height: 100dvh;
    margin: 0; padding: 0 0 16px;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border: 0; border-radius: 0;
    box-shadow: -16px 0 44px rgba(9, 32, 52, .2);
    overflow-y: auto; overscroll-behavior: contain; -webkit-overflow-scrolling: touch;
    transform: translateX(103%);
    transition: transform .3s cubic-bezier(.22, .61, .36, 1);
  }
  .nav.open { display: flex; transform: translateX(0); }

  /* --- 抽屉头部：品牌 + 关闭 --- */
  .drawer-head {
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
    padding: 15px 16px 13px; border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 2; background: #fff;
  }
  .drawer-head .dh-brand { display: flex; align-items: baseline; gap: 8px; line-height: 1.2; min-width: 0; }
  .drawer-head .dh-brand strong { font-size: 16px; font-weight: 700; color: var(--primary-deep); letter-spacing: 1.4px; white-space: nowrap; }
  .drawer-head .dh-brand small { font-size: 10px; font-weight: 700; letter-spacing: 1.2px; color: var(--gold-600); white-space: nowrap; }
  .drawer-close {
    flex: none; width: 38px; height: 38px; display: grid; place-items: center;
    padding: 0; border: 1px solid var(--border); border-radius: 9px;
    background: #fff; color: var(--primary-deep); cursor: pointer;
  }
  .drawer-close svg { width: 18px; height: 18px; }
  .drawer-close:active { background: #f2f7fb; }

  /* --- 导航项：整行左对齐 --- */
  .nav > a {
    display: block; width: auto; margin: 2px 10px; padding: 14px 12px;
    border-radius: 10px; font-size: 15.5px; font-weight: 600;
    text-align: left; color: #24354d; line-height: 1.4;
  }
  .nav > a:hover, .nav > a.active { background: #eef4fb; color: var(--primary); }
  .nav > a:active { background: #e4eef9; }
  .nav > a.cta-btn { display: none; }

  /* --- 抽屉底部：电话 + 企微 --- */
  .drawer-foot {
    display: grid; gap: 10px; margin-top: auto; padding: 16px;
    border-top: 1px solid var(--border); background: #fff;
  }
  .drawer-foot .dbtn {
    display: flex; align-items: center; justify-content: center; gap: 8px;
    width: 100%; padding: 13px 14px; border-radius: 12px;
    font-family: inherit; font-size: 15px; font-weight: 700; line-height: 1.2;
    text-align: center; cursor: pointer; border: 1px solid transparent;
    transition: transform .18s, box-shadow .2s, background .2s;
  }
  .drawer-foot .dbtn svg { width: 17px; height: 17px; flex: none; }
  .drawer-foot .dbtn-gold {
    background: linear-gradient(135deg, var(--gold), #a8831a); color: #fff;
    box-shadow: 0 8px 20px rgba(201, 162, 39, .32);
  }
  .drawer-foot .dbtn-gold:active { color: #fff; transform: scale(.985); }
  .drawer-foot .dbtn-ghost {
    background: #fff; border-color: var(--border); color: var(--primary-deep);
  }
  .drawer-foot .dbtn-ghost:active { background: #f4f8fb; transform: scale(.985); }

  /* --- 打开时锁定背景滚动 --- */
  body.nav-open { overflow: hidden; }
}

/* 极窄屏：抽屉略宽一点，保证 7 字导航项不换行 */
@media (max-width: 360px) {
  .nav { width: min(88vw, 330px); }
  .nav > a { font-size: 15px; padding: 13px 10px; }
}
/* 320px 级别屏：抽屉头部英文副标让位给关闭按钮，避免截断 */
@media (max-width: 339px) {
  .drawer-head .dh-brand small { display: none; }
}

/* ===== 2026-10-24 首页改版：常见问题 × 知识库 合并板块 ===== */
.qa-layout{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);gap:40px;align-items:start}
.qa-main{min-width:0}
.qa-main .faq{max-width:none;margin:0}
/* 上海站 FAQ 的问题文本是裸文本节点，flex 的 space-between 会把它夹到中间，这里统一左对齐 */
.qa-main .faq-q{justify-content:flex-start}
.qa-main .faq-q .arrow{margin-left:auto}
.qa-side{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px 26px 24px;box-shadow:var(--shadow-sm)}
.qa-side-title{font-size:17px;line-height:1.4;color:var(--primary-deep);margin:0 0 6px}
.qa-side-sub{font-size:13px;color:var(--text-sub);margin:0 0 16px;line-height:1.6}
.qa-links{list-style:none;margin:0;padding:0}
.qa-links li+li{border-top:1px dashed var(--border)}
.qa-links li a{display:flex;align-items:flex-start;gap:10px;padding:11px 0;text-decoration:none;color:var(--text);font-size:14.5px;line-height:1.55;transition:color .2s}
.qa-links li a:hover{color:var(--accent-dark)}
.qa-cat{flex:0 0 auto;margin-top:2px;padding:2px 7px;border-radius:6px;font-size:11.5px;font-weight:600;color:var(--accent-dark);background:rgba(24,164,124,.08);border:1px solid rgba(24,164,124,.18);white-space:nowrap}
.qa-txt{flex:1 1 auto;min-width:0}
.qa-all{display:block;margin-top:16px;padding-top:15px;border-top:1px solid var(--border);font-size:14.5px;font-weight:600;color:var(--primary);text-decoration:none}
.qa-all:hover{color:var(--accent-dark)}

/* ===== 办理流程步骤徽标（天津站"服务承诺"改为流程后使用） ===== */
.step-num{width:42px;height:42px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:16px;letter-spacing:.5px;color:#fff;
  background:linear-gradient(135deg,var(--primary),var(--accent));margin-bottom:14px;
  box-shadow:0 6px 16px rgba(15,36,68,.16)}

@media(max-width:1024px){
  .qa-layout{grid-template-columns:1fr;gap:26px}
  .qa-side{padding:22px 20px}
}
@media(max-width:560px){
  .qa-side{padding:20px 16px}
  .qa-links li a{font-size:14px;padding:10px 0}
}

/* ===== 2026-10-24 性能与可访问性 ===== */
/* <picture> 只是容器，不参与布局，避免包裹后改变原有盒模型 */
picture { display: contents; }
/* 键盘可见焦点：全站原本没有任何 :focus 样式，Tab 导航完全看不到位置 */
:focus-visible {
  outline: 3px solid #2563eb;
  outline-offset: 2px;
  border-radius: 4px;
}
/* 跳转主内容：读屏与键盘用户可一次跳过导航 */
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 9999;
  background: #0f2444; color: #fff; padding: 12px 22px;
  border-radius: 0 0 10px 0; font-size: 15px; text-decoration: none;
}
.skip-link:focus { left: 0; }
/* 尊重系统「减少动态效果」，前庭敏感用户不会晕 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important; animation-iteration-count: 1 !important;
    transition-duration: .01ms !important; scroll-behavior: auto !important;
  }
}

/* 移动端首屏背景用 800px 版本：390px 屏上原图 1536px 属过采样，
   hero 上盖着 .22 透明度的深色遮罩，降采样肉眼不可辨，单张省 55KB。 */
@media (max-width: 768px) {
  .hero-bg { background-image: url('../img/biz-team-800.webp'); }
}

/* ============ 核心业务下方：收费参考 ============ */
.price-block { margin-top: 40px; }
.price-block > h3 {
  font-size: 19px; color: var(--primary-deep); font-weight: 700;
  margin: 0 0 16px; padding-left: 14px; position: relative;
}
.price-block > h3::before {
  content: ""; position: absolute; left: 0; top: .38em; width: 4px; height: 1em;
  border-radius: 2px; background: linear-gradient(180deg, var(--primary), var(--accent));
}
.price-table td:nth-child(2), .price-table td:nth-child(3) {
  font-weight: 700; color: var(--accent-dark); white-space: nowrap;
}
.price-note {
  font-size: 13.5px; color: var(--text-sub); line-height: 1.8;
  margin: 16px 0 0; padding: 14px 18px; background: #f6fafd;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
}
.price-note a { color: var(--accent-dark); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }
.price-note a:hover { color: var(--primary); }

/* 小屏：价格表改为堆叠网格，避免横向滚动裁切年费列 */
@media (max-width: 640px) {
  .price-block { margin-top: 28px; }
  .price-table { min-width: 0; }
  .price-table thead {
    position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden;
    clip: rect(0 0 0 0); white-space: nowrap; border: 0;
  }
  .price-table tbody tr {
    display: grid; grid-template-columns: 1fr 1fr; gap: 2px 14px;
    padding: 11px 14px;
  }
  .price-table tbody td { padding: 0; border: none; }
  .price-table tbody td:first-child {
    grid-column: 1 / -1; font-size: 14px; color: var(--primary-deep);
    font-weight: 700; margin-bottom: 4px;
  }
  .price-table tbody td:not(:first-child) { display: flex; align-items: baseline; gap: 6px; white-space: nowrap; }
  .price-table tbody td:not(:first-child)::before {
    content: attr(data-label); font-size: 12px; color: var(--text-sub); font-weight: 400;
  }
}

/* ==== A11Y-AA-START 2026-10-24 WCAG 2.1 AA 对比度修正 ====
   原值实测（axe-core 4.10）：
   --gold-600 #b8935a 在白底 2.85:1  → --gold-text #8a6a2f = 5.02:1
   --gold     #c9a86a 在浅底 2.26:1  → 同上
   --accent   #18a47c 在浅底 3.16:1  → --accent-dark #0e7d5e = 4.86:1
   #8fa1ad / #8aa4b5 元信息 2.6:1    → --text-sub #5d7080 = 4.89:1
   仅调整文字色，不改变背景、边框、渐变等装饰用途。 */
:root { --gold-text: #8a6a2f; }
.logo-txt small { color: var(--gold-text); }
.eyebrow,
.section-title .eyebrow,
.section-head .eyebrow,
.split-txt .eyebrow { color: var(--accent-dark); }
.section-title.left .eyebrow,
.section-head.left .eyebrow,
.faq-q .mark { color: var(--gold-text); }
.kb-meta,
.kb-card .kb-meta,
.map-meta-tip,
.policy-note,
.article-meta,
.article-date,
.crumb span { color: #5d7080; }
.tag-gold { color: var(--gold-text); }
.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;
}
/* ==== A11Y-AA-END ==== */

/* ==== MOBILE-SPACING-START 2026-10-25 移动端板块留白压缩 ====
   实测（390x844，慢速滚动至最终渲染态后按行取色）：
     y=3156..3310  154px 纯空白   核心业务 -> 为什么选择
     y=4629..4765  136px 纯空白   为什么选择 -> 服务流程
     y=5636..5766  130px 纯空白   服务流程 -> 常见问题
     y=7441..7637  196px 纯空白   CTA -> 页脚
   成因：`.section{padding:72px 0}` 上下叠加 144px；页脚再叠 60px margin-top
        与 `.footer-inner` 的 64px 内边距，合计 196px。
   390px 屏宽下 144px 相当于屏宽 37%，视觉上散。
   处理：相邻间距收到 80-96px，仍保留板块层次；`.section-title` 下间距
        48 -> 26/30px（标题区本身含 eyebrow+h2+横条+副标题，48 太远）。
   仅作用于 <=768px，桌面端（1440/1024）完全不变。 */
@media (max-width: 768px) {
  .section { padding: 48px 0; }
  .section-title { margin-bottom: 30px; }
  .site-footer { margin-top: 0; }
  .footer-inner { padding: 44px 20px 34px; gap: 32px; }
}
@media (max-width: 480px) {
  .section { padding: 40px 0; }
  .section-title { margin-bottom: 26px; }
  .section-title h2 { margin-bottom: 12px; }
  .footer-inner { padding: 40px 18px 30px; }
}
/* ==== MOBILE-SPACING-END ==== */