/* ============================================================
   重庆春蚕科技 官网 - 全局样式
   纯静态 · 无第三方依赖 · 可直接上传至站点根目录
   ============================================================ */

/* ---------- 变量 ---------- */
:root {
  --primary: #0b5cab;
  --primary-dark: #084a8c;
  --primary-light: #e8f1fb;
  --accent: #ff7a00;
  --accent-dark: #e06a00;
  --text: #1f2937;
  --text-sub: #5b6673;
  --text-muted: #8a94a1;
  --bg: #ffffff;
  --bg-soft: #f5f7fa;
  --bg-deep: #0f2c4d;
  --border: #e5e9ef;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(15, 44, 77, .06);
  --shadow: 0 4px 16px rgba(15, 44, 77, .08);
  --shadow-lg: 0 12px 32px rgba(15, 44, 77, .12);
  --nav-h: 68px;
  --maxw: 1200px;
}

/* ---------- 基础重置 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB",
               "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s; }
ul, ol { list-style: none; }
button, input, textarea, select { font-family: inherit; font-size: inherit; outline: none; }

/* ---------- 布局 ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }
.section--soft { background: var(--bg-soft); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-tag {
  display: inline-block; font-size: 13px; letter-spacing: 2px;
  color: var(--primary); font-weight: 500; margin-bottom: 12px;
}
.section-title {
  font-size: 32px; font-weight: 600; line-height: 1.4; color: var(--text);
  margin-bottom: 16px;
}
.section-desc { font-size: 16px; color: var(--text-sub); }

/* ---------- 顶部导航 ---------- */
.topbar {
  height: 36px; background: var(--bg-deep); color: rgba(255,255,255,.72);
  font-size: 13px; display: flex; align-items: center;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; }
.topbar span + span { margin-left: 20px; }
.topbar a:hover { color: #fff; }

.nav {
  position: sticky; top: 0; z-index: 100;
  height: var(--nav-h); background: rgba(255,255,255,.96);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .25s;
}
.nav.scrolled { box-shadow: var(--shadow-sm); }
.nav .container { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-mark {
  width: 38px; height: 38px; border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), #2b8ae5);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 600; font-size: 17px; flex: none;
}
.logo-text { line-height: 1.25; }
.logo-text b { display: block; font-size: 17px; font-weight: 600; letter-spacing: .5px; }
.logo-text small { font-size: 11px; color: var(--text-muted); letter-spacing: 1px; }

.menu { display: flex; align-items: center; gap: 4px; }
.menu > li { position: relative; }
.menu > li > a {
  display: block; padding: 10px 16px; font-size: 15px; color: var(--text);
  border-radius: 6px; transition: all .2s;
}
.menu > li > a:hover { color: var(--primary); background: var(--primary-light); }
.menu > li.active > a { color: var(--primary); font-weight: 500; }
.menu > li.active > a::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 2px;
  height: 2px; background: var(--primary); border-radius: 2px;
}
.nav-cta {
  margin-left: 12px; padding: 9px 20px; border-radius: var(--radius);
  background: var(--primary); color: #fff; font-size: 14px; transition: all .2s;
}
.nav-cta:hover { background: var(--primary-dark); color: #fff; }

.burger { display: none; width: 40px; height: 40px; border: none; background: none; cursor: pointer; }
.burger i { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px auto; transition: .25s; }
.burger.on i:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.on i:nth-child(2) { opacity: 0; }
.burger.on i:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 30px; border-radius: var(--radius);
  font-size: 15px; font-weight: 500; cursor: pointer;
  border: 1px solid transparent; transition: all .22s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-dark); transform: translateY(-2px); }
.btn-ghost { border-color: rgba(255,255,255,.5); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.12); }
.btn-outline { border-color: var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, #0f2c4d 0%, #14508f 55%, #1b6bb5 100%);
  color: #fff; padding: 96px 0 108px;
}
.hero::after {
  content: ""; position: absolute; right: -120px; top: -80px;
  width: 520px; height: 520px; border-radius: 50%;
  background: rgba(255, 255, 255, .05);
}
.hero::before {
  content: ""; position: absolute; left: -80px; bottom: -160px;
  width: 360px; height: 360px; border-radius: 50%;
  background: rgba(255, 122, 0, .12);
}
.hero .container { position: relative; z-index: 2; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero h1 { font-size: 42px; line-height: 1.32; font-weight: 600; margin-bottom: 20px; }
.hero h1 em { font-style: normal; color: #ffb066; }
.hero p.lead { font-size: 17px; color: rgba(255,255,255,.85); margin-bottom: 32px; max-width: 560px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-stats { display: flex; gap: 40px; flex-wrap: wrap; }
.hero-stats div b { display: block; font-size: 30px; font-weight: 600; color: #ffb066; line-height: 1.2; }
.hero-stats div span { font-size: 13px; color: rgba(255,255,255,.7); }

.hero-card {
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18);
  border-radius: var(--radius-lg); padding: 28px; backdrop-filter: blur(6px);
}
.hero-card h3 { font-size: 16px; font-weight: 500; margin-bottom: 18px; color: rgba(255,255,255,.9); }
.hero-card li {
  display: flex; gap: 12px; padding: 11px 0;
  border-bottom: 1px dashed rgba(255,255,255,.16); font-size: 14px;
}
.hero-card li:last-child { border-bottom: none; }
.hero-card li i {
  flex: none; width: 20px; height: 20px; border-radius: 50%;
  background: rgba(255,178,102,.22); color: #ffb066;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-style: normal; margin-top: 3px;
}

/* ---------- 卡片通用 ---------- */
.grid { display: grid; gap: 24px; }
.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: #fff; border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 32px 28px;
  transition: all .28s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.card-icon {
  width: 52px; height: 52px; border-radius: 12px;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px; font-size: 22px; font-weight: 600;
}
.card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.card p { color: var(--text-sub); font-size: 14.5px; }
.card ul { margin-top: 16px; }
.card ul li { position: relative; padding-left: 18px; font-size: 14px; color: var(--text-sub); margin-bottom: 6px; }
.card ul li::before {
  content: ""; position: absolute; left: 0; top: 10px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--primary);
}

/* ---------- 服务分层 A/B/C ---------- */
.tier-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
.tier {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden; display: flex; flex-direction: column; transition: all .28s;
}
.tier:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.tier-top { padding: 28px 28px 22px; border-bottom: 1px dashed var(--border); }
.tier-badge {
  display: inline-block; width: 38px; height: 38px; line-height: 36px; text-align: center;
  border-radius: 10px; font-size: 18px; font-weight: 600; margin-bottom: 14px;
}
.tier-a .tier-badge { background: #fdf0e3; color: var(--accent); }
.tier-b .tier-badge { background: var(--primary-light); color: var(--primary); }
.tier-c .tier-badge { background: #eaeef3; color: #4a5563; }
.tier h3 { font-size: 20px; font-weight: 600; margin-bottom: 6px; }
.tier .tier-sub { font-size: 13.5px; color: var(--text-muted); }
.tier-body { padding: 22px 28px 28px; flex: 1; display: flex; flex-direction: column; }
.tier-body dl { display: grid; grid-template-columns: 76px 1fr; gap: 8px 12px; font-size: 14px; }
.tier-body dt { color: var(--text-muted); }
.tier-body dd { color: var(--text-sub); }
.tier-price { margin: 20px 0 18px; font-size: 13px; color: var(--text-muted); }
.tier-price b { font-size: 22px; color: var(--accent); font-weight: 600; }
.tier-body .btn { margin-top: auto; width: 100%; justify-content: center; }
.tier.recommended { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(11,92,171,.08); }
.tier-flag {
  background: var(--primary); color: #fff; font-size: 12px;
  padding: 5px 12px; border-radius: 0 0 8px 0; display: inline-block;
}

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-lg); background: #fff; }
table { width: 100%; border-collapse: collapse; min-width: 640px; }
thead th {
  background: var(--primary); color: #fff; font-weight: 500;
  padding: 15px 18px; text-align: left; font-size: 14.5px; white-space: nowrap;
}
tbody td { padding: 15px 18px; border-top: 1px solid var(--border); font-size: 14.5px; color: var(--text-sub); }
tbody tr:nth-child(even) { background: #fafbfd; }
tbody tr:hover { background: var(--primary-light); }
tbody td:first-child { color: var(--text); font-weight: 500; }

/* ---------- 时间轴 ---------- */
.timeline { position: relative; padding-left: 34px; }
.timeline::before {
  content: ""; position: absolute; left: 9px; top: 8px; bottom: 8px;
  width: 2px; background: linear-gradient(var(--primary), #bcd8f5);
}
.timeline li { position: relative; padding-bottom: 30px; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: ""; position: absolute; left: -30px; top: 7px;
  width: 12px; height: 12px; border-radius: 50%;
  background: #fff; border: 3px solid var(--primary);
}
.timeline h4 { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.timeline .time { font-size: 12.5px; color: var(--accent); margin-bottom: 6px; }
.timeline p { font-size: 14px; color: var(--text-sub); }

/* ---------- 案例 ---------- */
.case-card {
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden; transition: all .28s;
  display: flex; flex-direction: column;
}
.case-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.case-cover {
  height: 148px; display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 15px; letter-spacing: 1px;
}
.case-cover.c1 { background: linear-gradient(135deg, #14508f, #2b8ae5); }
.case-cover.c2 { background: linear-gradient(135deg, #0f6e56, #1d9e75); }
.case-cover.c3 { background: linear-gradient(135deg, #b45409, #ef9f27); }
.case-cover.c4 { background: linear-gradient(135deg, #5f3dc4, #8b6ce0); }
.case-cover.c5 { background: linear-gradient(135deg, #a32d2d, #e24b4a); }
.case-cover.c6 { background: linear-gradient(135deg, #0b5cab, #16a1c9); }
.case-body { padding: 22px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.case-body h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; }
.case-body p { font-size: 14px; color: var(--text-sub); flex: 1; }
.case-metrics { display: flex; gap: 22px; margin-top: 18px; padding-top: 16px; border-top: 1px dashed var(--border); }
.case-metrics div b { display: block; font-size: 20px; color: var(--primary); font-weight: 600; }
.case-metrics div span { font-size: 12px; color: var(--text-muted); }

/* ---------- 数据条 ---------- */
.stats-band { background: var(--bg-deep); color: #fff; padding: 64px 0; }
.stats-band .grid-4 { text-align: center; }
.stats-band b { display: block; font-size: 38px; font-weight: 600; color: #ffb066; line-height: 1.2; }
.stats-band span { font-size: 14px; color: rgba(255,255,255,.72); }

/* ---------- 合作伙伴 ---------- */
.partners { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.partners span {
  padding: 12px 26px; border: 1px solid var(--border); border-radius: 8px;
  background: #fff; font-size: 14.5px; color: var(--text-sub); transition: all .22s;
}
.partners span:hover { border-color: var(--primary); color: var(--primary); box-shadow: var(--shadow-sm); }

/* ---------- 新闻列表 ---------- */
.news-list { display: flex; flex-direction: column; gap: 0; }
.news-item {
  display: grid; grid-template-columns: 108px 1fr auto; gap: 28px; align-items: center;
  padding: 26px 24px; background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius-lg); margin-bottom: 16px; transition: all .25s;
}
.news-item:hover { box-shadow: var(--shadow); border-color: transparent; transform: translateX(4px); }
.news-date { text-align: center; border-right: 1px solid var(--border); padding-right: 20px; }
.news-date b { display: block; font-size: 26px; font-weight: 600; color: var(--primary); line-height: 1.1; }
.news-date span { font-size: 12px; color: var(--text-muted); }
.news-item h3 { font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.news-item p { font-size: 14px; color: var(--text-sub); }
.news-arrow { color: var(--primary); font-size: 20px; }
.tag {
  display: inline-block; padding: 2px 10px; border-radius: 4px;
  font-size: 12px; background: var(--primary-light); color: var(--primary); margin-right: 8px;
}

/* ---------- 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-info li {
  display: flex; gap: 16px; padding: 18px 0; border-bottom: 1px dashed var(--border);
}
.contact-info li:last-child { border-bottom: none; }
.contact-info .ci-icon {
  flex: none; width: 42px; height: 42px; border-radius: 10px;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center; font-size: 17px;
}
.contact-info b { display: block; font-size: 14px; color: var(--text-muted); font-weight: 400; }
.contact-info strong { font-size: 16px; font-weight: 600; }

.form-box { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow-sm); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; margin-bottom: 7px; color: var(--text-sub); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 11px 14px; border: 1px solid var(--border);
  border-radius: 8px; background: #fbfcfe; transition: all .2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(11,92,171,.08);
}
.form-group textarea { min-height: 108px; resize: vertical; }
.form-box .btn { width: 100%; justify-content: center; }
.form-note { font-size: 12.5px; color: var(--text-muted); margin-top: 14px; text-align: center; }

/* ---------- CTA 条 ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--primary) 0%, #1b6bb5 100%);
  color: #fff; padding: 68px 0; text-align: center;
}
.cta-band h2 { font-size: 30px; font-weight: 600; margin-bottom: 14px; }
.cta-band p { color: rgba(255,255,255,.85); margin-bottom: 28px; font-size: 16px; }

/* ---------- 页脚 ---------- */
.footer { background: #0b2138; color: rgba(255,255,255,.65); padding: 60px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; }
.footer h4 { color: #fff; font-size: 15px; font-weight: 500; margin-bottom: 18px; }
.footer ul li { margin-bottom: 10px; }
.footer ul li a:hover { color: #ffb066; }
.footer .logo-text b { color: #fff; }
.footer .logo-text small { color: rgba(255,255,255,.45); }
.footer-about { margin-top: 16px; line-height: 1.8; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1); padding: 20px 0;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 13px;
}

/* ---------- 页面横幅 ---------- */
.page-banner {
  background: linear-gradient(135deg, #0f2c4d, #14508f);
  color: #fff; padding: 66px 0 62px; text-align: center;
}
.page-banner h1 { font-size: 34px; font-weight: 600; margin-bottom: 12px; }
.page-banner p { color: rgba(255,255,255,.78); font-size: 16px; }
.crumb { font-size: 13.5px; color: rgba(255,255,255,.6); margin-bottom: 14px; }
.crumb a:hover { color: #ffb066; }

/* ---------- 富文本块 ---------- */
.prose h2 { font-size: 26px; font-weight: 600; margin: 44px 0 16px; }
.prose h3 { font-size: 19px; font-weight: 600; margin: 28px 0 12px; }
.prose p { color: var(--text-sub); margin-bottom: 14px; }
.prose ul { margin: 0 0 18px; }
.prose ul li { position: relative; padding-left: 20px; color: var(--text-sub); margin-bottom: 8px; }
.prose ul li::before {
  content: ""; position: absolute; left: 4px; top: 11px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--primary);
}
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split-img {
  border-radius: var(--radius-lg); min-height: 300px;
  background: linear-gradient(135deg, #e8f1fb, #cfe1f7);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary); font-size: 15px; letter-spacing: 2px;
  border: 1px solid var(--border);
}
.hl { color: var(--primary); font-weight: 600; }

/* ---------- 滚动动画 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 返回顶部 ---------- */
.to-top {
  position: fixed; right: 24px; bottom: 24px; width: 44px; height: 44px;
  border-radius: 50%; background: var(--primary); color: #fff; border: none;
  cursor: pointer; box-shadow: var(--shadow); opacity: 0; visibility: hidden;
  transition: all .28s; z-index: 90; font-size: 17px;
}
.to-top.show { opacity: 1; visibility: visible; }
.to-top:hover { background: var(--primary-dark); }

/* ---------- 场景矩阵（参照 cotong 领域云） ---------- */
.scenario-cloud { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.scenario {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px 14px; text-align: center; transition: all .26s; cursor: default;
}
.scenario:hover {
  border-color: var(--primary); transform: translateY(-4px);
  box-shadow: var(--shadow); background: #fff;
}
.scenario .sc-ico {
  width: 44px; height: 44px; margin: 0 auto 12px; border-radius: 12px;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 600;
}
.scenario:hover .sc-ico { background: var(--primary); color: #fff; }
.scenario b { display: block; font-size: 15px; font-weight: 500; margin-bottom: 4px; }
.scenario span { font-size: 12.5px; color: var(--text-muted); }

/* ---------- 痛点共鸣 ---------- */
.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.pain {
  background: #fff; border-left: 3px solid var(--accent); border-radius: 0 var(--radius) var(--radius) 0;
  padding: 20px 22px; box-shadow: var(--shadow-sm);
}
.pain b { display: block; font-size: 15.5px; margin-bottom: 6px; color: var(--accent-dark); }
.pain p { font-size: 14px; color: var(--text-sub); margin: 0; }

/* ---------- 政策红利带 ---------- */
.policy-band {
  background: linear-gradient(120deg, #fff7ec, #fdf0e3);
  border: 1px solid #f6d9b8; border-radius: var(--radius-lg); padding: 36px 40px;
}
.policy-band h3 { font-size: 20px; margin-bottom: 18px; color: #993c1d; }
.policy-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.policy-list div b { display: block; font-size: 15px; margin-bottom: 6px; color: #712b13; }
.policy-list div p { font-size: 14px; color: #854f0b; margin: 0; }

/* ---------- 对比表（我们 vs 同行） ---------- */
.vs-wrap { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--border); background: #fff; }
.vs-wrap table { min-width: 660px; }
.vs-wrap thead th:last-child { background: var(--accent); }
.vs-wrap thead th:nth-child(2) { background: #6b7280; }
.vs-wrap tbody td:last-child { color: var(--text); font-weight: 500; background: #fffaf5; }
.vs-wrap tbody td.no::before { content: "× "; color: #e24b4a; font-weight: 600; }
.vs-wrap tbody td.yes::before { content: "✓ "; color: #1d9e75; font-weight: 600; }

/* ---------- 专家卡 ---------- */
.expert-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 28px 24px; text-align: center; transition: all .28s; height: 100%;
}
.expert-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-5px); border-color: transparent; }
.expert-avatar {
  width: 72px; height: 72px; margin: 0 auto 16px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #2b8ae5);
  color: #fff; font-size: 24px; font-weight: 600;
  display: flex; align-items: center; justify-content: center;
}
.expert-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 4px; }
.expert-card .role { font-size: 13.5px; color: var(--accent); margin-bottom: 12px; }
.expert-card ul { text-align: left; margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--border); }
.expert-card ul li { font-size: 13.5px; color: var(--text-sub); padding-left: 16px; position: relative; margin-bottom: 5px; }
.expert-card ul li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 5px; height: 5px; border-radius: 50%; background: var(--primary);
}

/* ---------- 客户墙 ---------- */
.client-wall { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.client-wall div {
  height: 78px; border: 1px solid var(--border); border-radius: var(--radius);
  background: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 14px; color: var(--text-sub); text-align: center; padding: 8px;
  transition: all .24s; line-height: 1.4;
}
.client-wall div:hover { border-color: var(--primary); color: var(--primary); box-shadow: var(--shadow-sm); }

/* ---------- 深度案例 ---------- */
.case-detail {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden; margin-bottom: 32px;
}
.case-detail:hover { box-shadow: var(--shadow-lg); }
.case-head {
  padding: 26px 32px; display: flex; align-items: center; gap: 22px;
  border-bottom: 1px solid var(--border); background: linear-gradient(120deg, #fbfcfe, #f2f6fb);
}
.case-no {
  flex: none; width: 52px; height: 52px; border-radius: 12px;
  background: var(--primary); color: #fff; font-size: 19px; font-weight: 600;
  display: flex; align-items: center; justify-content: center;
}
.case-head h3 { font-size: 21px; font-weight: 600; margin-bottom: 4px; }
.case-head .case-tagline { font-size: 14px; color: var(--accent); }
.case-head .case-tags { margin-left: auto; text-align: right; font-size: 13px; color: var(--text-muted); }
.case-cols { display: grid; grid-template-columns: .95fr 1fr; gap: 0; }
.case-col { padding: 26px 32px; }
.case-col + .case-col { border-left: 1px dashed var(--border); }
.case-col h4 {
  font-size: 14px; font-weight: 600; color: var(--primary);
  margin-bottom: 14px; letter-spacing: .5px;
}
.case-col ul li { position: relative; padding-left: 18px; font-size: 14px; color: var(--text-sub); margin-bottom: 9px; }
.case-col ul li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--primary);
}
.case-col.plan ul li::before { background: var(--accent); }
.case-metric-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.case-metric-grid .m { background: var(--bg-soft); border-radius: 10px; padding: 14px 16px; }
.case-metric-grid .m b { display: block; font-size: 24px; color: var(--primary); font-weight: 600; line-height: 1.2; }
.case-metric-grid .m span { font-size: 12.5px; color: var(--text-sub); }
.case-intro {
  padding: 18px 32px; background: #fafbfd; border-top: 1px solid var(--border);
  font-size: 14px; color: var(--text-sub);
}
.case-intro b { color: var(--text); }

/* ---------- FAQ 折叠 ---------- */
.faq-item { border: 1px solid var(--border); border-radius: var(--radius); background: #fff; margin-bottom: 12px; overflow: hidden; }
.faq-q {
  padding: 18px 22px; cursor: pointer; display: flex; align-items: center; gap: 14px;
  font-size: 15.5px; font-weight: 500; user-select: none; transition: background .2s;
}
.faq-q:hover { background: var(--bg-soft); }
.faq-q i {
  flex: none; width: 24px; height: 24px; border-radius: 6px;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-style: normal; font-weight: 600;
}
.faq-q em { margin-left: auto; font-style: normal; color: var(--text-muted); transition: transform .25s; font-size: 15px; }
.faq-item.open .faq-q em { transform: rotate(45deg); }
.faq-a { display: none; padding: 0 22px 20px 60px; font-size: 14.5px; color: var(--text-sub); }
.faq-item.open .faq-a { display: block; }

/* ---------- 自研产品价值卡 ---------- */
.dev-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 26px 24px; height: 100%; transition: all .26s;
}
.dev-card:hover { box-shadow: var(--shadow-lg); border-color: transparent; transform: translateY(-4px); }
.dev-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 14px; }
.dev-kv { display: flex; flex-direction: column; gap: 10px; margin-top: 16px; padding-top: 16px; border-top: 1px dashed var(--border); }
.dev-kv b { font-size: 21px; color: var(--accent); font-weight: 600; }
.dev-kv span { font-size: 13px; color: var(--text-sub); margin-left: 8px; }

/* ---------- 子品牌标签 ---------- */
.sub-brand {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: 20px;
  background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.25);
  font-size: 13px; color: #fff;
}

/* ---------- 场景 tab ---------- */
.tab-nav { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 36px; }
.tab-nav button {
  padding: 10px 22px; border-radius: 24px; border: 1px solid var(--border);
  background: #fff; color: var(--text-sub); font-size: 14.5px; cursor: pointer; transition: all .22s;
}
.tab-nav button:hover { border-color: var(--primary); color: var(--primary); }
.tab-nav button.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ---------- 产品线分层卡 ---------- */
.pline {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden; display: flex; flex-direction: column; transition: all .28s;
}
.pline:hover { box-shadow: var(--shadow-lg); transform: translateY(-5px); border-color: transparent; }
.pline-bar { height: 4px; }
.pline.p-large .pline-bar { background: linear-gradient(90deg, #084a8c, #2b8ae5); }
.pline.p-mid .pline-bar { background: linear-gradient(90deg, #0b5cab, #16a1c9); }
.pline.p-small .pline-bar { background: linear-gradient(90deg, #1d9e75, #62c7a5); }
.pline-body { padding: 26px 26px 28px; flex: 1; display: flex; flex-direction: column; }
.pline-scale {
  display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px;
}
.pline-scale em {
  font-style: normal; font-size: 11.5px; padding: 2px 9px; border-radius: 4px;
  background: var(--bg-soft); color: var(--text-muted); letter-spacing: .5px;
}
.pline-body h3 { font-size: 19px; font-weight: 600; margin-bottom: 4px; }
.pline-body .pline-sub { font-size: 13.5px; color: var(--accent); margin-bottom: 14px; }
.pline-body > p { font-size: 14px; color: var(--text-sub); }
.pline-meta { display: grid; grid-template-columns: 56px 1fr; gap: 8px 12px; font-size: 13.5px; margin: 16px 0 0; }
.pline-meta dt { color: var(--text-muted); }
.pline-meta dd { color: var(--text-sub); }
.pline-body ul { margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--border); }
.pline-body ul li { position: relative; padding-left: 18px; font-size: 13.5px; color: var(--text-sub); margin-bottom: 6px; }
.pline-body ul li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--primary);
}

/* ---------- AI 场景落地 ---------- */
.ai-band { background: var(--bg-deep); color: #fff; }
.ai-band .section-title { color: #fff; }
.ai-band .section-desc { color: rgba(255,255,255,.7); }
.ai-band .section-tag { color: #ffb066; }
.ai-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.ai-item {
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius); padding: 20px 20px 22px; transition: all .26s;
}
.ai-item:hover { background: rgba(255,255,255,.11); border-color: rgba(255,178,102,.4); transform: translateY(-3px); }
.ai-item .ai-ico {
  width: 38px; height: 38px; border-radius: 10px; margin-bottom: 12px;
  background: rgba(255,178,102,.16); color: #ffb066;
  display: flex; align-items: center; justify-content: center; font-size: 15px; font-weight: 600;
}
.ai-item b { display: block; font-size: 15.5px; font-weight: 500; margin-bottom: 6px; }
.ai-item p { font-size: 13.5px; color: rgba(255,255,255,.62); margin: 0; line-height: 1.65; }

/* ---------- 部署方式 ---------- */
.deploy-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.deploy-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 24px 22px; text-align: center; transition: all .26s;
}
.deploy-card:hover { border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-4px); }
.deploy-card .dp-no {
  width: 40px; height: 40px; margin: 0 auto 14px; border-radius: 50%;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center; font-size: 15px; font-weight: 600;
}
.deploy-card h3 { font-size: 16.5px; font-weight: 600; margin-bottom: 4px; }
.deploy-card .dp-en { font-size: 11.5px; color: var(--text-muted); letter-spacing: .5px; margin-bottom: 12px; }
.deploy-card p { font-size: 13.5px; color: var(--text-sub); margin: 0; }

/* ---------- 提示条 ---------- */
.note-band {
  background: #fff; border: 1px solid var(--border); border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0; padding: 18px 22px;
  font-size: 14.5px; color: var(--text-sub);
}
.note-band b { color: var(--accent-dark); }

/* ---------- 响应式 ---------- */
@media (max-width: 992px) {
  .hero-grid, .split, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3, .tier-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .hero h1 { font-size: 32px; }
  .section-title { font-size: 26px; }
  .hero::after, .hero::before { display: none; }
  .scenario-cloud { grid-template-columns: repeat(3, 1fr); }
  .pain-grid, .policy-list { grid-template-columns: 1fr 1fr; }
  .ai-grid { grid-template-columns: repeat(2, 1fr); }
  .deploy-grid { grid-template-columns: repeat(2, 1fr); }
  .client-wall { grid-template-columns: repeat(3, 1fr); }
  .case-cols { grid-template-columns: 1fr; }
  .case-col + .case-col { border-left: none; border-top: 1px dashed var(--border); }
}
@media (max-width: 768px) {
  .container { padding: 0 18px; }
  .section { padding: 60px 0; }
  .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .nav-cta { display: none; }
  .burger { display: block; }
  .menu {
    position: absolute; top: var(--nav-h); left: 0; right: 0;
    background: #fff; flex-direction: column; align-items: stretch;
    padding: 10px 18px 18px; border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow); display: none;
  }
  .menu.open { display: flex; }
  .menu > li > a { padding: 13px 8px; border-bottom: 1px solid #f2f4f7; }
  .menu > li.active > a::after { display: none; }
  .hero { padding: 64px 0 72px; }
  .hero h1 { font-size: 27px; }
  .hero p.lead { font-size: 15.5px; }
  .hero-stats { gap: 26px; }
  .hero-stats div b { font-size: 25px; }
  .section-head { margin-bottom: 36px; }
  .news-item { grid-template-columns: 1fr; gap: 12px; padding: 20px; }
  .news-date { text-align: left; border-right: none; border-bottom: 1px dashed var(--border); padding: 0 0 10px; }
  .news-date b { display: inline-block; font-size: 18px; }
  .news-date span { display: inline-block; margin-left: 8px; }
  .news-arrow { display: none; }
  .form-row { grid-template-columns: 1fr; }
  .stats-band b { font-size: 30px; }
  .cta-band h2 { font-size: 24px; }
  .topbar { display: none; }
  .scenario-cloud { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .scenario { padding: 16px 10px; }
  .pain-grid, .policy-list { grid-template-columns: 1fr; }
  .policy-band { padding: 26px 22px; }
  .client-wall { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .case-head { flex-wrap: wrap; padding: 22px; gap: 14px; }
  .case-head .case-tags { display: none; }
  .case-head h3 { font-size: 19px; }
  .case-col { padding: 20px 22px; }
  .case-intro { padding: 16px 22px; }
  .case-metric-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .case-metric-grid .m b { font-size: 21px; }
  .faq-a { padding: 0 18px 18px 18px; }
  .ai-grid { grid-template-columns: 1fr; }
  .deploy-grid { grid-template-columns: 1fr; }
  .pline-body { padding: 22px 20px 24px; }
  .note-band { padding: 16px 18px; }
}