/* ==========================================================================
   DouBaoTui 企品推 · 全媒体广告投放官网
   共享样式表 · 主色调：浅蓝
   ========================================================================== */

/* ---------- 设计变量 ---------- */
:root {
  /* 品牌蓝体系 */
  --brand-50:  #EFF7FF;
  --brand-100: #E0F0FE;
  --brand-200: #B9DFFC;
  --brand-300: #7CC4F8;
  --brand-400: #3FA4F1;
  --brand-500: #1B84E6;
  --brand-600: #116BC8;
  --brand-700: #0F56A3;
  --brand-800: #104A88;
  --brand-900: #0B3B6E;
  --brand-950: #082E56;

  /* 中性色 */
  --ink:       #0C2A4D;
  --text:      #34475E;
  --muted:     #64748B;
  --line:      #DCE9F5;
  --bg-soft:   #F4F9FE;
  --bg-deep:   #082E56;
  --white:     #FFFFFF;

  /* 渐变 */
  --grad-main: linear-gradient(135deg, #0B3B6E 0%, #116BC8 48%, #1B84E6 100%);
  --grad-cta:  linear-gradient(135deg, #0F56A3 0%, #1B84E6 100%);
  --grad-hero: linear-gradient(120deg, #EAF5FF 0%, #D9ECFE 55%, #C2E1FC 100%);
  --grad-overlay: linear-gradient(100deg, rgba(8,46,86,.88) 0%, rgba(11,59,110,.72) 42%, rgba(27,132,230,.45) 100%);

  /* 圆角与阴影 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 2px 10px rgba(11, 84, 193, .06);
  --shadow-md: 0 8px 28px rgba(11, 84, 193, .10);
  --shadow-lg: 0 18px 48px rgba(11, 84, 193, .14);

  /* 字号 */
  --fs-h1: 46px;
  --fs-h2: 34px;
  --fs-h3: 22px;
  --fs-body: 16px;
  --fs-small: 14px;

  /* 容器 */
  --container: 1200px;
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--brand-600); text-decoration: none; transition: color .2s; }
a:hover { color: var(--brand-400); }
h1, h2, h3, h4, h5 { margin: 0 0 .4em; color: var(--ink); font-weight: 700; line-height: 1.3; }
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; }
:focus-visible { outline: 3px solid rgba(27,132,230,.45); outline-offset: 2px; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部信息条 ---------- */
.topbar {
  background: var(--brand-950);
  color: #C7DDF4;
  font-size: 13px;
  line-height: 40px;
}
.topbar .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.topbar a { color: #C7DDF4; }
.topbar a:hover { color: #fff; }
.topbar-left, .topbar-right { display: flex; align-items: center; gap: 22px; }
.topbar-right .sep { color: rgba(255,255,255,.25); }

/* ---------- 导航栏 ---------- */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .25s, border-color .25s;
}
.header.scrolled { box-shadow: var(--shadow-md); border-color: var(--line); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 74px; gap: 20px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 21px; font-weight: 800; color: var(--ink); letter-spacing: .5px; }
.logo:hover { color: var(--ink); }
.logo-mark { width: 38px; height: 38px; flex: 0 0 38px; }
.logo-text em { font-style: normal; color: var(--brand-600); }
.logo-sub { display: block; font-size: 11px; font-weight: 500; color: var(--muted); letter-spacing: 1.5px; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  display: block; padding: 9px 13px; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 500; color: var(--text);
}
.nav a:hover { color: var(--brand-600); background: var(--brand-50); }
.nav a.active { color: var(--brand-600); background: var(--brand-100); font-weight: 700; }
.header-cta { display: flex; align-items: center; gap: 12px; }
.header-tel { font-size: 15px; font-weight: 700; color: var(--ink); display: flex; align-items: center; gap: 8px; }
.header-tel svg { width: 18px; height: 18px; color: var(--brand-500); }

/* 汉堡按钮 */
.nav-toggle {
  display: none; width: 42px; height: 42px; border: 1px solid var(--line);
  border-radius: 10px; background: var(--white); align-items: center; justify-content: center;
}
.nav-toggle svg { width: 22px; height: 22px; stroke: var(--ink); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; border-radius: 999px; border: 0;
  font-size: 15px; font-weight: 700; line-height: 1.4; letter-spacing: .3px;
  transition: transform .2s, box-shadow .2s, background .2s;
  text-decoration: none; white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; }
.btn-primary { background: var(--grad-cta); color: #fff; box-shadow: 0 10px 24px rgba(27,132,230,.32); }
.btn-primary:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 14px 30px rgba(27,132,230,.4); }
.btn-outline { background: transparent; color: var(--brand-600); border: 1.5px solid var(--brand-400); }
.btn-outline:hover { background: var(--brand-50); transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--brand-700); box-shadow: var(--shadow-md); }
.btn-white:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-ghost { background: rgba(255,255,255,.12); color: #fff; border: 1px solid rgba(255,255,255,.35); }
.btn-ghost:hover { background: rgba(255,255,255,.2); color: #fff; }
.btn-lg { padding: 15px 36px; font-size: 16px; }

/* ---------- 通用区块 ---------- */
.section { padding: 88px 0; }
.section-soft { background: var(--bg-soft); }
.section-deep { background: var(--grad-main); }
.section-head { max-width: 760px; margin: 0 auto 52px; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px; border-radius: 999px;
  background: var(--brand-100); color: var(--brand-700);
  font-size: 13px; font-weight: 700; letter-spacing: 1.5px;
  margin-bottom: 16px;
}
.eyebrow svg { width: 14px; height: 14px; }
.section-head h2 { font-size: var(--fs-h2); font-weight: 800; letter-spacing: .5px; }
.section-head p { color: var(--muted); font-size: 17px; margin: 10px 0 0; }
.section-head.left { margin-left: 0; text-align: left; }
.section-deep .section-head h2 { color: #fff; }
.section-deep .section-head p { color: rgba(255,255,255,.82); }
.section-deep .eyebrow { background: rgba(255,255,255,.14); color: #fff; }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: var(--grad-hero);
}
.hero .container { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; padding-top: 72px; padding-bottom: 88px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 16px; border-radius: 999px;
  background: rgba(255,255,255,.85); border: 1px solid var(--brand-200);
  color: var(--brand-700); font-size: 13.5px; font-weight: 600;
  box-shadow: var(--shadow-sm); margin-bottom: 22px;
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: #2FBF71; }
.hero h1 { font-size: clamp(34px, 4.2vw, 54px); font-weight: 900; letter-spacing: .5px; line-height: 1.22; margin-bottom: 20px; }
.hero h1 span { color: var(--brand-600); }
.hero-lead { font-size: 18px; color: var(--text); max-width: 540px; margin-bottom: 34px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 44px; }
.hero-points { display: flex; gap: 28px; flex-wrap: wrap; }
.hero-points li { display: flex; align-items: center; gap: 9px; font-size: 14.5px; font-weight: 600; color: var(--ink); }
.hero-points svg { width: 18px; height: 18px; color: var(--brand-500); }
.hero-media { position: relative; }
.hero-media img { width: 100%; border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); aspect-ratio: 16 / 11; object-fit: cover; }
.hero-float {
  position: absolute; background: #fff; border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); padding: 14px 18px; display: flex; align-items: center; gap: 12px;
  border: 1px solid var(--brand-100);
}
.hero-float .f-icon { width: 40px; height: 40px; border-radius: 12px; background: var(--brand-100); color: var(--brand-600); display: flex; align-items: center; justify-content: center; flex: 0 0 40px; }
.hero-float .f-icon svg { width: 20px; height: 20px; }
.hero-float .f-label { font-size: 12px; color: var(--muted); line-height: 1.4; }
.hero-float .f-value { font-size: 16px; font-weight: 800; color: var(--ink); line-height: 1.3; }
.hero-float.f1 { top: 26px; left: -26px; }
.hero-float.f2 { bottom: 34px; right: -18px; }

/* ---------- 统计带 ---------- */
.stats-band { background: var(--grad-main); color: #fff; padding: 56px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.stat { text-align: center; padding: 8px 12px; }
.stat .num { font-size: 42px; font-weight: 900; line-height: 1.2; letter-spacing: 1px; }
.stat .num em { font-style: normal; font-size: 24px; margin-left: 2px; }
.stat .label { color: rgba(255,255,255,.78); font-size: 14.5px; margin-top: 6px; }
.stat + .stat { border-left: 1px solid rgba(255,255,255,.18); }

/* ---------- 卡片 ---------- */
.card {
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 30px 28px;
  transition: transform .25s, box-shadow .25s, border-color .25s;
  position: relative;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--brand-200); }
.card-icon {
  width: 54px; height: 54px; border-radius: 14px; margin-bottom: 20px;
  background: var(--brand-100); color: var(--brand-600);
  display: flex; align-items: center; justify-content: center;
}
.card-icon svg { width: 27px; height: 27px; }
.card h3 { font-size: 19px; font-weight: 700; }
.card p { font-size: 14.5px; color: var(--muted); margin-bottom: 0; }
.card-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-size: 14px; font-weight: 700; color: var(--brand-600); }
.card-link svg { width: 15px; height: 15px; transition: transform .2s; }
.card:hover .card-link svg { transform: translateX(4px); }

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.card-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- 平台服务卡 ---------- */
.platform-card { text-align: left; }
.platform-card .p-tag { position: absolute; top: 20px; right: 20px; font-size: 12px; font-weight: 700; color: var(--brand-600); background: var(--brand-50); border: 1px solid var(--brand-100); padding: 3px 10px; border-radius: 999px; }
.platform-card ul { margin-top: 14px; display: grid; gap: 8px; }
.platform-card ul li { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text); }
.platform-card ul svg { width: 14px; height: 14px; color: #2FBF71; flex: 0 0 14px; }

/* ---------- 优势条目 ---------- */
.adv-card { text-align: center; }
.adv-card .card-icon { margin-left: auto; margin-right: auto; }
.adv-card h3 { font-size: 18px; }

/* ---------- 行业方案预览 ---------- */
.industry-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.industry-item {
  display: block; color: inherit; text-decoration: none;
  border-radius: var(--radius-lg); padding: 26px 22px; text-align: center;
  background: var(--white); border: 1px solid var(--line);
  transition: transform .25s, box-shadow .25s;
}
.industry-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.industry-item .i-icon { width: 52px; height: 52px; margin: 0 auto 14px; border-radius: 14px; background: var(--brand-100); color: var(--brand-600); display: flex; align-items: center; justify-content: center; }
.industry-item .i-icon svg { width: 26px; height: 26px; }
.industry-item h4 { font-size: 17px; margin-bottom: 6px; }
.industry-item p { font-size: 13.5px; color: var(--muted); margin: 0; }

/* ---------- 服务案例 ---------- */
.case-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 28px 26px; text-align: left; transition: transform .25s, box-shadow .25s; }
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.case-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.case-head h3 { font-size: 18px; margin: 0; }
.case-tag { font-size: 12px; font-weight: 700; color: var(--brand-600); background: var(--brand-50); border: 1px solid var(--brand-100); padding: 3px 10px; border-radius: 999px; white-space: nowrap; }
.case-desc { font-size: 14px; color: var(--muted); margin: 0 0 16px; }
.case-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.case-chip { font-size: 12.5px; color: var(--brand-700); background: var(--brand-50); padding: 4px 12px; border-radius: 999px; }
.case-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.kpi { background: var(--bg-soft); border-radius: var(--radius-md); padding: 12px 10px; text-align: center; }
.kpi b { display: block; font-size: 19px; color: var(--brand-700); font-weight: 900; }
.kpi span { font-size: 12px; color: var(--muted); }
.case-note { font-size: 12px; color: var(--muted); margin-top: 14px; }

/* ---------- 行业方案详情页 ---------- */
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 620px; background: var(--white); border-radius: var(--radius-lg); overflow: hidden; }
.data-table th { background: var(--grad-cta); color: #fff; padding: 14px 16px; text-align: left; font-weight: 700; }
.data-table td { padding: 14px 16px; border-bottom: 1px solid var(--line); color: var(--text); }
.data-table tr:last-child td { border-bottom: 0; }
.sol-sub { font-size: 12.5px; color: var(--muted); margin-top: 16px; }

/* ---------- 流程时间轴 ---------- */
.steps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; counter-reset: step; }
.steps:has(> .step:nth-child(5)) { grid-template-columns: repeat(3, 1fr); }
.step {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 30px 26px; position: relative;
}
.step::before {
  counter-increment: step; content: "0" counter(step);
  position: absolute; top: 18px; right: 22px;
  font-size: 44px; font-weight: 900; color: var(--brand-100); line-height: 1;
}
.step .s-icon { width: 50px; height: 50px; border-radius: 50%; background: var(--grad-cta); color: #fff; display: flex; align-items: center; justify-content: center; margin-bottom: 18px; box-shadow: 0 8px 20px rgba(27,132,230,.3); }
.step .s-icon svg { width: 24px; height: 24px; }
.step h3 { font-size: 18px; position: relative; z-index: 1; }
.step p { font-size: 14px; color: var(--muted); margin: 8px 0 0; position: relative; z-index: 1; }

/* 发展历程时间轴（grid 三列：时间/轴/内容） */
.timeline { display: grid; grid-template-columns: 140px 44px 1fr; gap: 0; }
.tl-item { display: contents; }
.tl-time { padding: 22px 0; text-align: right; font-size: 16px; font-weight: 800; color: var(--brand-700); }
.tl-axis { position: relative; display: flex; justify-content: center; }
.tl-axis::before { content: ""; position: absolute; top: 0; bottom: 0; width: 2px; background: var(--brand-200); }
.tl-dot { width: 14px; height: 14px; border-radius: 50%; background: var(--brand-500); border: 3px solid var(--brand-100); align-self: center; justify-self: center; z-index: 1; }
.tl-content { padding: 18px 0 18px 28px; }
.tl-content h4 { font-size: 17px; margin-bottom: 4px; }
.tl-content p { font-size: 14px; color: var(--muted); margin: 0; }

/* ---------- 内页 Hero ---------- */
.page-hero {
  position: relative; color: #fff; overflow: hidden;
  background-color: var(--brand-900);
  background-size: cover; background-position: center;
}
.page-hero::before { content: ""; position: absolute; inset: 0; background: var(--grad-overlay); }
.page-hero .container { position: relative; padding-top: 92px; padding-bottom: 92px; }
.crumb { font-size: 13.5px; color: rgba(255,255,255,.75); margin-bottom: 16px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.crumb a { color: rgba(255,255,255,.75); }
.crumb a:hover { color: #fff; }
.crumb .arrow { opacity: .5; }
.page-hero h1 { color: #fff; font-size: clamp(30px, 3.6vw, 44px); font-weight: 900; margin-bottom: 14px; letter-spacing: .5px; }
.page-hero .lead { color: rgba(255,255,255,.88); font-size: 17px; max-width: 680px; margin: 0; }
.page-hero .lead strong { color: #fff; }

/* ---------- 图文分栏 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split-media img { border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.split-media { position: relative; }
.split-media .badge-float {
  position: absolute; left: -18px; bottom: 26px; background: #fff; border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg); padding: 14px 20px; border: 1px solid var(--brand-100);
  display: flex; align-items: center; gap: 12px;
}
.split-media .badge-float .b-icon { width: 38px; height: 38px; border-radius: 10px; background: var(--brand-100); color: var(--brand-600); display: flex; align-items: center; justify-content: center; flex: 0 0 38px; }
.split-media .badge-float .b-icon svg { width: 19px; height: 19px; }
.split-media .badge-float .b-label { font-size: 12px; color: var(--muted); line-height: 1.4; }
.split-media .badge-float .b-value { font-size: 15px; font-weight: 800; color: var(--ink); line-height: 1.3; }
.split-body h2 { font-size: 30px; font-weight: 800; margin-bottom: 16px; }
.split-body p { color: var(--text); }
.split-body ul { display: grid; gap: 12px; margin: 18px 0 26px; }
.split-body ul li { display: flex; gap: 10px; align-items: flex-start; }
.split-body ul svg { width: 18px; height: 18px; color: var(--brand-500); flex: 0 0 18px; margin-top: 4px; }

/* ---------- 特性列表 ---------- */
.feature-list { display: grid; gap: 18px; }
.feature {
  display: flex; gap: 18px; background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 22px 24px;
}
.feature .f-icon { width: 48px; height: 48px; flex: 0 0 48px; border-radius: 12px; background: var(--brand-100); color: var(--brand-600); display: flex; align-items: center; justify-content: center; }
.feature .f-icon svg { width: 24px; height: 24px; }
.feature h3 { font-size: 17px; margin-bottom: 4px; }
.feature p { font-size: 14px; color: var(--muted); margin: 0; }

/* ---------- 平台页能力矩阵 ---------- */
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cap-item { border-radius: var(--radius-lg); padding: 26px; background: var(--white); border: 1px solid var(--line); }
.cap-item h3 { font-size: 18px; display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.cap-item h3 svg { width: 22px; height: 22px; color: var(--brand-500); }
.cap-item p { font-size: 14px; color: var(--muted); margin: 0; }

/* ---------- 数据成果区（图表容器） ---------- */
.chart-wrap { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-xl); padding: 32px; box-shadow: var(--shadow-sm); }
.chart-box { width: 100%; height: 380px; }
.chart-note { font-size: 13px; color: var(--muted); margin-top: 14px; text-align: center; }

/* ---------- 新闻 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; display: flex; flex-direction: column; transition: transform .25s, box-shadow .25s; }
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.news-thumb { aspect-ratio: 16/9; object-fit: cover; width: 100%; }
.news-body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.news-meta { display: flex; align-items: center; gap: 14px; font-size: 12.5px; color: var(--muted); margin-bottom: 10px; }
.news-meta .tag { background: var(--brand-100); color: var(--brand-700); font-weight: 700; padding: 3px 10px; border-radius: 999px; }
.news-card h3 { font-size: 17.5px; line-height: 1.5; margin-bottom: 8px; }
.news-card h3 a { color: var(--ink); }
.news-card h3 a:hover { color: var(--brand-600); }
.news-card p { font-size: 14px; color: var(--muted); margin: 0 0 14px; }
.news-card .card-link { margin-top: auto; }

/* 新闻列表页 */
.news-list { display: grid; gap: 22px; }
.news-row { display: grid; grid-template-columns: 320px 1fr; gap: 26px; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; transition: transform .25s, box-shadow .25s; }
.news-row:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.news-row img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 16/10; }
.news-row .nr-body { padding: 24px 26px; display: flex; flex-direction: column; }
.news-row h3 { font-size: 19px; }
.news-row h3 a { color: var(--ink); }
.news-row h3 a:hover { color: var(--brand-600); }
.news-row p { font-size: 14.5px; color: var(--muted); margin: 8px 0 12px; }

/* 分页 */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 44px; }
.pagination a, .pagination span {
  min-width: 42px; height: 42px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 10px; border: 1px solid var(--line); background: var(--white); color: var(--text); font-weight: 600; font-size: 14px;
}
.pagination .current { background: var(--grad-cta); color: #fff; border-color: transparent; }
.pagination a:hover { border-color: var(--brand-400); color: var(--brand-600); }

/* ---------- FAQ 手风琴 ---------- */
.faq-list { max-width: 860px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-md); overflow: hidden; transition: box-shadow .25s; }
.faq-item.open { box-shadow: var(--shadow-md); border-color: var(--brand-200); }
.faq-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 24px; background: none; border: 0; text-align: left;
  font-size: 16px; font-weight: 700; color: var(--ink);
}
.faq-q .q-mark { width: 26px; height: 26px; flex: 0 0 26px; border-radius: 8px; background: var(--brand-100); color: var(--brand-600); display: inline-flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 800; }
.faq-q .chev { width: 20px; height: 20px; color: var(--muted); transition: transform .25s; flex: 0 0 20px; }
.faq-item.open .chev { transform: rotate(180deg); color: var(--brand-600); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a .inner { padding: 0 24px 22px 54px; font-size: 14.5px; color: var(--text); }
.faq-a .inner p { margin: 0; }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items: start; }
.contact-info { display: grid; gap: 18px; }
.contact-item { display: flex; gap: 16px; align-items: flex-start; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 22px 24px; }
.contact-item .c-icon { width: 48px; height: 48px; flex: 0 0 48px; border-radius: 12px; background: var(--brand-100); color: var(--brand-600); display: flex; align-items: center; justify-content: center; }
.contact-item .c-icon svg { width: 23px; height: 23px; }
.contact-item h3 { font-size: 16px; margin-bottom: 3px; }
.contact-item p { font-size: 14.5px; color: var(--muted); margin: 0; }
.contact-item a { color: var(--ink); font-weight: 600; }
.contact-item a:hover { color: var(--brand-600); }

.contact-form { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-xl); padding: 38px; box-shadow: var(--shadow-sm); }
.contact-form h3 { font-size: 22px; margin-bottom: 6px; }
.contact-form .form-tip { font-size: 13.5px; color: var(--muted); margin-bottom: 24px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-field { display: grid; gap: 7px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-size: 13.5px; font-weight: 600; color: var(--ink); }
.form-field label em { font-style: normal; color: #E5484D; margin-left: 2px; }
.form-field input, .form-field select, .form-field textarea {
  width: 100%; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 10px;
  font: inherit; font-size: 14.5px; color: var(--ink); background: var(--white);
  transition: border-color .2s, box-shadow .2s;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  outline: none; border-color: var(--brand-400); box-shadow: 0 0 0 3px rgba(27,132,230,.12);
}
.form-field textarea { resize: vertical; min-height: 120px; }
.form-submit { display: flex; align-items: center; gap: 16px; margin-top: 22px; }
.form-msg { font-size: 13.5px; color: #2FBF71; font-weight: 600; }
.form-msg.error { color: #E5484D; }
.form-note { font-size: 12.5px; color: var(--muted); margin-top: 12px; }

/* ---------- CTA 带 ---------- */
.cta-band { background: var(--grad-main); position: relative; overflow: hidden; padding: 72px 0; }
.cta-band::before { content: ""; position: absolute; right: -140px; top: -140px; width: 420px; height: 420px; border-radius: 50%; background: rgba(255,255,255,.06); }
.cta-band::after { content: ""; position: absolute; left: -80px; bottom: -160px; width: 360px; height: 360px; border-radius: 50%; background: rgba(255,255,255,.05); }
.cta-band .container { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.cta-band h2 { color: #fff; font-size: 30px; font-weight: 800; margin-bottom: 8px; }
.cta-band p { color: rgba(255,255,255,.82); margin: 0; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.footer { background: var(--bg-deep); color: #9DB6D4; font-size: 14px; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 44px; padding: 64px 0 48px; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 20px; }
.footer .logo { color: #fff; margin-bottom: 16px; }
.footer .logo-text em { color: #7CC4F8; }
.footer-desc { line-height: 1.9; max-width: 300px; }
.footer-links { display: grid; gap: 10px; }
.footer-links a { color: #9DB6D4; }
.footer-links a:hover { color: #fff; }
.footer-contact { display: grid; gap: 12px; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer-contact svg { width: 17px; height: 17px; color: #7CC4F8; flex: 0 0 17px; margin-top: 4px; }
.footer-contact a { color: #9DB6D4; }
.footer-contact a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 20px 0; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; color: #7E9ABE; }
.footer-bottom a { color: #9DB6D4; }
.footer-bottom a:hover { color: #fff; }

/* ---------- 回到顶部 ---------- */
.back-top {
  position: fixed; right: 26px; bottom: 30px; z-index: 90;
  width: 46px; height: 46px; border-radius: 12px; border: 0;
  background: var(--grad-cta); color: #fff; box-shadow: var(--shadow-lg);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: opacity .25s, transform .25s, visibility .25s;
}
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top svg { width: 20px; height: 20px; }

/* ---------- 滚动显现 ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.reveal.revealed { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- 文章详情 ---------- */
.article { max-width: 860px; margin: 0 auto; }
.article-head { text-align: center; margin-bottom: 40px; }
.article-head h1 { font-size: clamp(26px, 3vw, 36px); font-weight: 900; }
.article-meta { display: flex; justify-content: center; gap: 18px; color: var(--muted); font-size: 13.5px; margin-top: 12px; flex-wrap: wrap; }
.article-body { color: var(--text); font-size: 16px; line-height: 2; }
.article-body h2 { font-size: 23px; margin: 34px 0 14px; }
.article-body h3 { font-size: 19px; margin: 26px 0 10px; }
.article-body img { border-radius: var(--radius-lg); margin: 24px 0; width: 100%; height: auto; }
.article-body blockquote { margin: 24px 0; padding: 18px 24px; border-left: 4px solid var(--brand-400); background: var(--brand-50); border-radius: 0 var(--radius-md) var(--radius-md) 0; color: var(--ink); font-weight: 500; }
.article-body ul { list-style: none; margin: 0 0 1em; display: grid; gap: 8px; }
.article-body ul li { position: relative; padding-left: 24px; }
.article-body ul li::before { content: ""; position: absolute; left: 2px; top: 12px; width: 7px; height: 7px; border-radius: 50%; background: var(--brand-400); }
.article-tags { display: flex; gap: 10px; margin: 34px 0 0; flex-wrap: wrap; }
.article-tags a { font-size: 13px; color: var(--brand-700); background: var(--brand-100); padding: 6px 14px; border-radius: 999px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .industry-row { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .cap-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 992px) {
  .nav { display: none; position: fixed; top: 114px; left: 0; right: 0; background: #fff; flex-direction: column; align-items: stretch; padding: 16px 24px 26px; box-shadow: var(--shadow-lg); border-top: 1px solid var(--line); max-height: calc(100vh - 130px); overflow-y: auto; }
  .nav.open { display: flex; }
  .nav a { padding: 13px 10px; border-bottom: 1px solid var(--bg-soft); border-radius: 0; font-size: 16px; }
  .nav-toggle { display: inline-flex; }
  .header-cta .btn { display: none; }
  .topbar-right { display: none; }
  .hero .container { grid-template-columns: 1fr; padding-top: 56px; }
  .hero-media { order: -1; max-width: 640px; }
  .hero-float.f1 { left: 10px; }
  .hero-float.f2 { right: 10px; }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .split-media .badge-float { left: 10px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .stat + .stat { border-left: 0; }
  .stat:nth-child(odd) { border-right: 1px solid rgba(255,255,255,.18); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 36px; }
  .news-row { grid-template-columns: 1fr; }
  .news-row img { aspect-ratio: 16/8; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-head h2 { font-size: 27px; }
  .hero h1 { font-size: 32px; }
  .hero-media { display: none; }
  .hero-actions .btn { flex: 1; }
  .steps { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 90px 36px 1fr; }
  .tl-content { padding-left: 16px; }
  .card-grid { grid-template-columns: 1fr; }
  .cap-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .form-field.full { grid-column: auto; }
  .cta-band .container { flex-direction: column; text-align: center; }
  .cta-actions { justify-content: center; }
  .footer-top { grid-template-columns: 1fr; }
  .hero-float { display: none; }
  .chart-box { height: 300px; }
}

@media (max-width: 576px) {
  .container { padding: 0 18px; }
  .header .container { height: 66px; }
  .nav { top: 106px; }
  .topbar { display: none; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat .num { font-size: 32px; }
  .industry-row { grid-template-columns: 1fr 1fr; gap: 14px; }
  .btn-lg { padding: 13px 26px; font-size: 15px; }
  .page-hero .container { padding-top: 64px; padding-bottom: 64px; }
  .contact-form { padding: 26px 20px; }
}