@charset "UTF-8";
/* ==========================================================================
   菁英科技官网 · 统一设计系统 v2.0
   --------------------------------------------------------------------------
   设计目标：
   1. 单一来源 —— 替代原 5 个独立 CSS，全站一套变量与组件
   2. AI 友好 —— 语义化标签、结论前置块、数据表格、FAQ 块为一级组件
   3. 一致 —— 所有页面共享同一套排版节奏与色彩
   ========================================================================== */

/* ==================== 1. 设计令牌 ==================== */
:root {
  /* 品牌色 —— 延续原站深蓝 + 青 */
  --brand-900: #063463;
  --brand-800: #0a4d8c;
  --brand-700: #0f5aa3;
  --brand-600: #1565c0;
  --brand-500: #2e7dd1;
  --brand-300: #7fb3e3;
  --brand-100: #d6e8f8;
  --brand-50:  #eef5fc;

  /* 强调色 */
  --accent-700: #007a94;
  --accent-600: #0093b0;
  --accent-500: #00b4d8;
  --accent-300: #48cae4;
  --accent-100: #d4f2fa;
  --accent-50:  #eefafd;

  /* 中性色 */
  --ink-900: #0d1b2a;
  --ink-800: #1b263b;
  --ink-700: #334155;
  --ink-600: #475569;
  --ink-500: #64748b;
  --ink-400: #94a3b8;
  --ink-300: #cbd5e1;
  --ink-200: #e2e8f0;
  --ink-100: #f1f5f9;
  --ink-50:  #f8fafc;
  --white:   #ffffff;

  /* 语义状态色 */
  --ok-600:  #1a8a52;
  --ok-100:  #e3f6ec;
  --warn-600:#b5730a;
  --warn-100:#fdf3e0;
  --info-600:#1565c0;
  --info-100:#e8f1fc;

  /* 版式 */
  --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", Consolas, "Cascadia Code", Monaco, monospace;

  /* 圆角 / 阴影 / 过渡 */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 22px;
  --r-pill: 100px;
  --sh-xs: 0 1px 2px rgba(13,27,42,.06);
  --sh-sm: 0 1px 3px rgba(13,27,42,.08), 0 1px 2px rgba(13,27,42,.04);
  --sh-md: 0 4px 16px rgba(13,27,42,.08);
  --sh-lg: 0 12px 36px rgba(13,27,42,.11);
  --t: .25s cubic-bezier(.4,0,.2,1);

  --max-w: 1240px;
  --nav-h: 68px;
}

/* ==================== 2. 重置 ==================== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-700);
  background: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img, svg, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--t); }
ul, ol { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
table { border-collapse: collapse; width: 100%; }

:focus-visible { outline: 2px solid var(--accent-500); outline-offset: 2px; border-radius: 3px; }

.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;
}

/* ==================== 3. 布局 ==================== */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 880px; margin: 0 auto; padding: 0 24px; }

.section { padding: 84px 0; }
.section-sm { padding: 56px 0; }
.section-alt { background: var(--ink-50); }
.section-brand { background: linear-gradient(160deg, var(--brand-900) 0%, var(--brand-800) 55%, var(--accent-700) 100%); color: #fff; }

.section-head { max-width: 860px; margin: 0 auto 52px; text-align: center; }
.section-head.left { margin-left: 0; text-align: left; }

/* 页面头部（内页 banner） */
.page-head {
  background: linear-gradient(150deg, var(--brand-900) 0%, var(--brand-800) 60%, var(--brand-700) 100%);
  color: #fff; padding: 48px 0 44px; position: relative; overflow: hidden;
}
.page-head::after {
  content: ""; position: absolute; right: -140px; top: -140px;
  width: 420px; height: 420px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0,180,216,.22), transparent 70%);
}
.page-head .container { position: relative; z-index: 1; }
.page-head h1 { font-size: 34px; line-height: 1.3; font-weight: 700; letter-spacing: -.3px; margin-bottom: 12px; }
.page-head .lede { font-size: 16.5px; color: rgba(255,255,255,.86); max-width: 780px; line-height: 1.8; }

/* 网格 */
.grid { display: grid; gap: 24px; }
.g-2 { grid-template-columns: repeat(2, 1fr); }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.g-4 { grid-template-columns: repeat(4, 1fr); }
.g-side { grid-template-columns: 1fr 320px; align-items: start; }
.g-side-left { grid-template-columns: 260px 1fr; align-items: start; }

/* ==================== 3b. 首页 Hero ==================== */
.hero {
  position: relative; overflow: hidden; padding: 66px 0 60px;
  background: linear-gradient(158deg, #063463 0%, #0a4d8c 52%, #007a94 100%);
}
.hero::before {
  content: ""; position: absolute; right: -180px; top: -180px; width: 560px; height: 560px;
  border-radius: 50%; background: radial-gradient(circle, rgba(0,180,216,.26), transparent 68%);
  pointer-events: none;
}
.hero::after {
  content: ""; position: absolute; left: -140px; bottom: -220px; width: 480px; height: 480px;
  border-radius: 50%; background: radial-gradient(circle, rgba(0,180,216,.14), transparent 70%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }
.hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 48px; align-items: center; }
.hero-copy { color: #fff; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22);
  color: var(--accent-300); padding: 7px 15px; border-radius: var(--r-pill); margin-bottom: 22px;
}
.hero-badge .dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--accent-500);
  box-shadow: 0 0 0 3px rgba(0,180,216,.25);
}
.hero h1 { font-size: 42px; line-height: 1.24; letter-spacing: -.8px; color: #fff; margin-bottom: 20px; }
.hero h1 .hl { color: var(--accent-300); }
.hero-lede { font-size: 16.5px; line-height: 1.85; color: rgba(255,255,255,.86); max-width: 640px; margin-bottom: 30px; }
.hero-lede strong { color: #fff; font-weight: 600; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.hero .btn-primary { background: var(--accent-500); box-shadow: 0 4px 16px rgba(0,180,216,.32); }
.hero .btn-primary:hover { background: var(--accent-300); color: var(--brand-900); }
.hero .btn-outline { border-color: rgba(255,255,255,.55); color: #fff; background: transparent; }
.hero .btn-outline:hover { background: rgba(255,255,255,.14); border-color: #fff; color: #fff; }
.hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding-top: 28px; border-top: 1px solid rgba(255,255,255,.18); }
.hero-stat-num { font-size: 30px; font-weight: 800; color: #fff; line-height: 1.15; letter-spacing: -1px; }
.hero-stat-num span { font-size: 14px; font-weight: 600; color: var(--accent-300); margin-left: 2px; letter-spacing: 0; }
.hero-stat-label { font-size: 13px; color: rgba(255,255,255,.68); margin-top: 4px; }
.hero-media { position: relative; }
.hero-media img {
  width: 100%; border-radius: var(--r-lg);
  border: 1px solid rgba(255,255,255,.2); box-shadow: 0 24px 60px rgba(3,18,38,.42);
}
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 34px; }
  .hero h1 { font-size: 32px; }
  .hero-media { order: -1; }
}
@media (max-width: 560px) {
  .hero h1 { font-size: 26px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .hero-stat-num { font-size: 24px; }
}

/* ==================== 4. 排版 ==================== */
h1 {  font-weight: 700; line-height: 1.35; }
h2, h3, h4, h5 { color: var(--ink-900); font-weight: 700; line-height: 1.35; }

.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 2px;
  color: var(--accent-600); text-transform: uppercase; margin-bottom: 14px;
}
.section-brand .eyebrow { color: var(--accent-300); }

h2.section-title { font-size: 32px; margin-bottom: 16px; letter-spacing: -.3px; }
.section-sub { font-size: 16.5px; color: var(--ink-500); line-height: 1.8; }
.section-brand h2.section-title { color: #fff; }

/* 文章正文排版 */
.prose { font-size: 16px; line-height: 1.9; color: var(--ink-700); }
.prose > * + * { margin-top: 18px; }
.prose h2 { font-size: 26px; margin-top: 46px; padding-top: 8px; }
.prose h3 { font-size: 20px; margin-top: 34px; }
.prose h4 { font-size: 17px; margin-top: 26px; }
.prose p { }
.prose a { color: var(--brand-600); font-weight: 500; border-bottom: 1px solid var(--brand-100); }
.prose a:hover { color: var(--accent-600); border-bottom-color: var(--accent-500); }
.prose strong { color: var(--ink-900); font-weight: 700; }
.prose ul, .prose ol { padding-left: 24px; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: 8px; }
.prose li::marker { color: var(--accent-500); }
.prose code {
  font-family: var(--font-mono); font-size: .88em; background: var(--ink-100);
  padding: 2px 6px; border-radius: 4px; color: var(--brand-800); border: 1px solid var(--ink-200);
}
.prose blockquote {
  border-left: 3px solid var(--accent-500); background: var(--accent-50);
  padding: 14px 20px; border-radius: 0 var(--r-md) var(--r-md) 0; color: var(--ink-600);
}

/* ==================== 5. 顶部导航 ==================== */
.site-header {
  position: sticky; top: 0; z-index: 900; background: rgba(255,255,255,.96);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--ink-200);
}
.site-header .container { display: flex; align-items: center; gap: 20px; height: var(--nav-h); }
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand img { width: 142px; height: auto; }
.brand-text { display: none; }

.nav { display: flex; align-items: center; gap: 2px; margin-left: 10px; }
.nav-item { position: relative; }
.nav-link {
  display: flex; align-items: center; gap: 5px; padding: 10px 13px;
  font-size: 14.5px; font-weight: 500; color: var(--ink-700); border-radius: var(--r-sm);
  white-space: nowrap;
}
.nav-link:hover, .nav-item.active > .nav-link { color: var(--brand-600); background: var(--brand-50); }
.nav-link .caret { font-size: 9px; color: var(--ink-400); transition: transform var(--t); }
.nav-item:hover .caret { transform: rotate(180deg); }

.dropdown {
  position: absolute; top: calc(100% + 6px); left: 0; min-width: 224px;
  background: #fff; border: 1px solid var(--ink-200); border-radius: var(--r-md);
  box-shadow: var(--sh-lg); padding: 8px; opacity: 0; visibility: hidden;
  transform: translateY(-6px); transition: all var(--t);
}
.nav-item:hover .dropdown, .nav-item:focus-within .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown a {
  display: block; padding: 9px 12px; font-size: 14px; color: var(--ink-600);
  border-radius: var(--r-sm); line-height: 1.5;
}
.dropdown a:hover { background: var(--brand-50); color: var(--brand-700); }
.dropdown-title {
  font-size: 11.5px; font-weight: 700; letter-spacing: 1.2px; color: var(--ink-400);
  text-transform: uppercase; padding: 8px 12px 4px;
}

.header-cta { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.header-tel { font-size: 14px; font-weight: 700; color: var(--brand-800); white-space: nowrap; }

.mobile-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.mobile-toggle span { display: block; width: 22px; height: 2px; background: var(--ink-700); border-radius: 2px; transition: var(--t); }

/* 移动端 */
@media (max-width: 1080px) {
  .nav, .header-tel { display: none; }
  .mobile-toggle { display: flex; }
  .site-header.nav-open .nav {
    display: flex; flex-direction: column; align-items: stretch; gap: 0;
    position: absolute; top: var(--nav-h); left: 0; right: 0; margin: 0;
    background: #fff; border-bottom: 1px solid var(--ink-200);
    box-shadow: var(--sh-lg); padding: 10px 16px 18px; max-height: calc(100vh - var(--nav-h));
    overflow-y: auto;
  }
  .site-header.nav-open .dropdown {
    position: static; opacity: 1; visibility: visible; transform: none;
    box-shadow: none; border: none; border-left: 2px solid var(--ink-200);
    border-radius: 0; margin: 0 0 6px 14px; padding: 0 0 0 8px;
  }
  .site-header.nav-open .caret { display: none; }
}

/* ==================== 6. 按钮 ==================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; font-size: 15px; font-weight: 600; border-radius: var(--r-md);
  transition: var(--t); white-space: nowrap; line-height: 1.4;
}
.btn-primary { background: linear-gradient(135deg, var(--brand-800), var(--accent-600)); color: #fff; box-shadow: 0 2px 10px rgba(10,77,140,.22); }
.btn-primary:hover { box-shadow: 0 6px 20px rgba(10,77,140,.32); transform: translateY(-1px); color: #fff; }
.btn-accent { background: var(--accent-500); color: #fff; }
.btn-accent:hover { background: var(--accent-600); color: #fff; }
.btn-outline { border: 1.5px solid var(--brand-600); color: var(--brand-600); background: #fff; }
.btn-outline:hover { background: var(--brand-50); color: var(--brand-800); }
.btn-ghost-light { border: 1.5px solid rgba(255,255,255,.5); color: #fff; }
.btn-ghost-light:hover { background: rgba(255,255,255,.12); border-color: #fff; color: #fff; }
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-block { width: 100%; }
.btn-text { color: var(--brand-600); padding: 6px 0; font-weight: 600; gap: 6px; }
.btn-text:hover { color: var(--accent-600); gap: 10px; }

/* ==================== 7. 标签 / 徽章 ==================== */
.tag {
  display: inline-block; font-size: 12px; font-weight: 600; padding: 4px 11px;
  border-radius: var(--r-pill); background: var(--brand-50); color: var(--brand-700);
  border: 1px solid var(--brand-100); line-height: 1.6;
}
.tag-accent { background: var(--accent-50); color: var(--accent-700); border-color: var(--accent-100); }
.tag-ok { background: var(--ok-100); color: var(--ok-600); border-color: #bfe6d0; }
.tag-warn { background: var(--warn-100); color: var(--warn-600); border-color: #f0d9a8; }
.tag-solid { background: var(--brand-800); color: #fff; border-color: transparent; }

.badge-new { position: relative; }
.badge-new::after {
  content: "NEW"; position: absolute; top: -8px; right: -34px; font-size: 10px;
  font-weight: 700; background: #e23b3b; color: #fff; padding: 2px 6px; border-radius: 3px; letter-spacing: .5px;
}

/* ==================== 8. 卡片 ==================== */
.card {
  background: #fff; border: 1px solid var(--ink-200); border-radius: var(--r-lg);
  padding: 26px; transition: var(--t); height: 100%;
  display: flex; flex-direction: column;
}
.card:hover { border-color: var(--brand-300); box-shadow: var(--sh-md); transform: translateY(-2px); }
.card-flat { border-radius: var(--r-md); padding: 22px; }
.card-flat:hover { transform: none; box-shadow: var(--sh-xs); }
.card h3 { font-size: 17.5px; margin-bottom: 9px; }
.card h3 a:hover { color: var(--brand-600); }
.card p { font-size: 14.5px; color: var(--ink-600); line-height: 1.75; }
.card .card-icon {
  width: 42px; height: 42px; border-radius: var(--r-md); display: flex;
  align-items: center; justify-content: center; margin-bottom: 15px;
  background: var(--brand-50); color: var(--brand-700); font-size: 20px; flex-shrink: 0;
}
.card-icon-accent { background: var(--accent-50); color: var(--accent-700); }
.card-foot { margin-top: auto; padding-top: 16px; border-top: 1px solid var(--ink-100); font-size: 13.5px; }

/* 卡片带顶部色条 */
.card-topline { border-top: 3px solid var(--accent-500); }

/* ==================== 9. 结论前置块（AI 关键组件） ==================== */
/* 作用：把可被 AI 直接整段引用的答案放在页面最前，符合 BLUF 原则 */
.answer-block {
  background: var(--brand-50); border: 1px solid var(--brand-100);
  border-left: 4px solid var(--brand-600); border-radius: var(--r-md);
  padding: 20px 24px; margin: 0 0 34px;
}
.answer-block .ab-label {
  display: block; font-size: 12px; font-weight: 700; letter-spacing: 1.4px;
  color: var(--brand-600); text-transform: uppercase; margin-bottom: 9px;
}
.answer-block p { font-size: 15.5px; line-height: 1.85; color: var(--ink-700); }
.answer-block p + p { margin-top: 11px; }
.answer-block strong { color: var(--brand-900); }

/* ==================== 10. 数据条 / 指标 ==================== */
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat {
  text-align: center; padding: 22px 12px; background: #fff;
  border: 1px solid var(--ink-200); border-radius: var(--r-lg);
}
.stat-num { font-size: 34px; font-weight: 800; color: var(--brand-800); line-height: 1.15; letter-spacing: -1px; }
.stat-num .unit { font-size: 15px; font-weight: 600; color: var(--ink-500); margin-left: 3px; letter-spacing: 0; }
.stat-label { font-size: 13.5px; color: var(--ink-500); margin-top: 6px; }
.section-brand .stat { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.16); }
.section-brand .stat-num { color: var(--accent-300); }
.section-brand .stat-label { color: rgba(255,255,255,.75); }

/* 水平数据条 */
.bar-list { margin-top: 20px; }
.bar-item { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; font-size: 14px; }
.bar-label { width: 150px; flex-shrink: 0; color: var(--ink-600); }
.bar-track { flex: 1; height: 24px; background: var(--ink-100); border-radius: 5px; overflow: hidden; }
.bar-fill {
  height: 100%; border-radius: 5px;
  background: linear-gradient(90deg, var(--brand-700), var(--accent-500));
  display: flex; align-items: center; justify-content: flex-end;
  padding-right: 9px; font-size: 12px; font-weight: 700; color: #fff;
}
.bar-value { width: 82px; text-align: right; font-weight: 700; color: var(--ink-900); flex-shrink: 0; }

/* ==================== 11. 表格 ==================== */
.table-wrap { overflow-x: auto; border: 1px solid var(--ink-200); border-radius: var(--r-md); margin: 24px 0; position: relative; }
.table-wrap.is-scrollable::after {
  content: ""; position: absolute; top: 0; right: 0; bottom: 0; width: 26px;
  pointer-events: none; border-radius: 0 var(--r-md) var(--r-md) 0;
  background: linear-gradient(90deg, rgba(255,255,255,0), rgba(13,27,42,.07));
}
table.data { font-size: 14px; min-width: 620px; }
table.data caption {
  caption-side: top; text-align: left; padding: 12px 16px; font-size: 13px;
  color: var(--ink-500); background: var(--ink-50); border-bottom: 1px solid var(--ink-200);
}
table.data th {
  background: var(--ink-100); color: var(--ink-900); font-weight: 700;
  text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--ink-300);
  font-size: 13.5px; white-space: nowrap;
}
table.data td { padding: 12px 16px; border-bottom: 1px solid var(--ink-200); color: var(--ink-600); vertical-align: top; }
table.data tbody tr:last-child td { border-bottom: none; }
table.data tbody tr:hover { background: var(--brand-50); }
table.data td strong { color: var(--ink-900); }
table.data .c { text-align: center; white-space: nowrap; }
table.data .num { text-align: right; font-variant-numeric: tabular-nums; }
.table-compact th, .table-compact td { padding: 9px 13px; font-size: 13.5px; }

/* ==================== 12. FAQ 手风琴 ==================== */
/* 使用原生 <details open>：① 答案默认可见，符合 FAQPage 结构化数据「内容需用户可见」要求
   ② 不依赖 JS，AI 爬虫在 HTML 源码中可直接读到全部问答 ③ 用户仍可逐条折叠 */
.faq-list { border-top: 1px solid var(--ink-200); }
.faq-item { border-bottom: 1px solid var(--ink-200); }
.faq-item > summary { list-style: none; cursor: pointer; }
.faq-item > summary::-webkit-details-marker { display: none; }
.faq-item > summary::marker { display: none; content: ""; }
.faq-q {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 20px; padding: 18px 4px; text-align: left; font-size: 16px;
  font-weight: 600; color: var(--ink-900); line-height: 1.6;
}
.faq-q > span:first-child { flex: 1; }
.faq-q:hover { color: var(--brand-600); }
.faq-q .faq-mark { flex-shrink: 0; color: var(--accent-500); font-size: 20px; font-weight: 400; line-height: 1.4; transition: transform var(--t); }
.faq-item[open] .faq-mark { transform: rotate(45deg); }
.faq-a { display: block; padding: 0 4px 20px; font-size: 15px; line-height: 1.85; color: var(--ink-600); }
.faq-a p + p { margin-top: 10px; }

/* ==================== 13. 面包屑 ==================== */
.breadcrumb { font-size: 13px; color: var(--ink-400); padding: 14px 0; }
.breadcrumb ol { display: flex; flex-wrap: wrap; align-items: center; gap: 7px; list-style: none; padding: 0; }
.breadcrumb li { display: flex; align-items: center; gap: 7px; }
.breadcrumb li + li::before { content: "/"; color: var(--ink-300); }
.breadcrumb a { color: var(--ink-500); }
.breadcrumb a:hover { color: var(--brand-600); }
.breadcrumb [aria-current] { color: var(--ink-700); font-weight: 500; }

/* ==================== 14. 侧边目录 ==================== */
.toc { position: sticky; top: calc(var(--nav-h) + 20px); }
.toc h4 { font-size: 12px; letter-spacing: 1.4px; text-transform: uppercase; color: var(--ink-400); margin-bottom: 12px; }
.toc ol { list-style: none; padding: 0; border-left: 2px solid var(--ink-200); }
.toc li { margin: 0; }
.toc a { display: block; padding: 6px 0 6px 14px; font-size: 14px; color: var(--ink-500); border-left: 2px solid transparent; margin-left: -2px; line-height: 1.5; }
.toc a:hover { color: var(--brand-600); border-left-color: var(--brand-300); }
.toc a.active { color: var(--brand-700); font-weight: 600; border-left-color: var(--brand-600); }
.toc .toc-sub a { padding-left: 26px; font-size: 13px; }

/* 侧边联络卡 */
.side-card {
  background: var(--ink-50); border: 1px solid var(--ink-200); border-radius: var(--r-lg);
  padding: 22px; margin-top: 26px;
}
.side-card h4 { font-size: 15px; color: var(--ink-900); margin-bottom: 10px; }
.side-card p { font-size: 13.5px; color: var(--ink-600); margin-bottom: 12px; }
.side-card .tel { font-size: 19px; font-weight: 800; color: var(--brand-800); display: block; margin-bottom: 4px; }
.side-card .mail { font-size: 13.5px; color: var(--ink-500); word-break: break-all; }

/* ==================== 15. 提示块 ==================== */
.callout { border-radius: var(--r-md); padding: 18px 22px; margin: 22px 0; border-left: 4px solid; font-size: 14.5px; }
.callout .co-title { display: block; font-weight: 700; margin-bottom: 7px; font-size: 15px; }
.callout p + p { margin-top: 9px; }
.callout p:last-child { margin-bottom: 0; }
.co-info { background: var(--info-100); border-color: var(--info-600); }
.co-info .co-title { color: var(--info-600); }
.co-ok { background: var(--ok-100); border-color: var(--ok-600); }
.co-ok .co-title { color: var(--ok-600); }
.co-warn { background: var(--warn-100); border-color: var(--warn-600); }
.co-warn .co-title { color: var(--warn-600); }
.co-accent { background: var(--accent-50); border-color: var(--accent-500); }
.co-accent .co-title { color: var(--accent-700); }

/* ==================== 16. 流程 / 步骤 ==================== */
.steps { counter-reset: step; display: grid; gap: 18px; }
.step {
  position: relative; padding: 22px 24px 22px 66px; background: #fff;
  border: 1px solid var(--ink-200); border-radius: var(--r-lg);
}
.step::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 22px; top: 22px; width: 30px; height: 30px;
  border-radius: 50%; background: var(--brand-800); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700;
}
.step h4 { font-size: 16.5px; margin-bottom: 7px; }
.step p { font-size: 14.5px; color: var(--ink-600); }

/* 横向流程 */
.flow { display: flex; align-items: center; gap: 0; flex-wrap: wrap; margin: 26px 0; }
.flow-node {
  flex: 1; min-width: 128px; text-align: center; padding: 16px 10px;
  background: var(--brand-50); border: 1px solid var(--brand-100);
  border-radius: var(--r-md); font-size: 14px; font-weight: 600; color: var(--brand-800);
}
.flow-arrow { flex-shrink: 0; width: 26px; text-align: center; color: var(--brand-300); font-size: 16px; }

/* ==================== 17. 客户 logo ==================== */
.logo-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; background: var(--ink-200); border: 1px solid var(--ink-200); border-radius: var(--r-lg); overflow: hidden; }
.logo-cell {
  background: #fff; padding: 22px 18px; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 10px; min-height: 116px;
  transition: var(--t);
}
.logo-cell:hover { background: var(--brand-50); }
.logo-cell img { max-height: 40px; width: auto; max-width: 100%; object-fit: contain; filter: grayscale(1); opacity: .72; transition: var(--t); }
.logo-cell:hover img { filter: grayscale(0); opacity: 1; }
.logo-cell .lc-meta { font-size: 11.5px; color: var(--ink-400); text-align: center; line-height: 1.4; }

/* ==================== 18. CTA 区 ==================== */
.cta-band {
  background: linear-gradient(135deg, var(--brand-900), var(--brand-700) 60%, var(--accent-700));
  border-radius: var(--r-xl); padding: 46px 44px; color: #fff;
  display: flex; align-items: center; justify-content: space-between; gap: 34px; flex-wrap: wrap;
}
.cta-band h2 { color: #fff; font-size: 26px; margin-bottom: 8px; }
.cta-band p { color: rgba(255,255,255,.84); font-size: 15.5px; max-width: 620px; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ==================== 19. 页脚 ==================== */
.site-footer { background: var(--ink-900); color: rgba(255,255,255,.68); padding: 56px 0 26px; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1.2fr; gap: 34px; padding-bottom: 34px; border-bottom: 1px solid rgba(255,255,255,.1); }
.site-footer h4 { color: #fff; font-size: 14px; margin-bottom: 15px; letter-spacing: .4px; }
.site-footer ul { display: grid; gap: 9px; }
.site-footer a { color: rgba(255,255,255,.68); font-size: 13.5px; }
.site-footer a:hover { color: var(--accent-300); }
.footer-brand p { font-size: 13.5px; line-height: 1.8; margin-top: 14px; max-width: 320px; }
.footer-brand img { width: 140px; filter: brightness(0) invert(1); opacity: .9; }
.footer-contact li { display: flex; gap: 9px; font-size: 13.5px; align-items: flex-start; }
.footer-contact .fl { color: var(--accent-300); flex-shrink: 0; }
.footer-bottom {
  padding-top: 22px; display: flex; flex-wrap: wrap; gap: 12px 22px;
  justify-content: space-between; align-items: center; font-size: 13px; color: rgba(255,255,255,.5);
}
.footer-bottom a { color: rgba(255,255,255,.5); }
.footer-bottom a:hover { color: var(--accent-300); }
.footer-bottom-links { display: flex; flex-wrap: wrap; gap: 18px; }

/* 底部导航（SEO/AI 友好：全站地图） */
.footer-sitemap { padding: 26px 0 6px; border-bottom: 1px solid rgba(255,255,255,.1); margin-bottom: 22px; }
.footer-sitemap p { font-size: 12.5px; color: rgba(255,255,255,.42); line-height: 2.1; }
.footer-sitemap a { color: rgba(255,255,255,.62); }
.footer-sitemap a:hover { color: var(--accent-300); }
.footer-sitemap .fs-sep { color: rgba(255,255,255,.22); margin: 0 7px; }

/* ==================== 20. 内页通用区块 ==================== */
.feature-list { display: grid; gap: 14px; }
.feature-item { display: flex; gap: 14px; align-items: flex-start; }
.feature-item .fi-mark {
  flex-shrink: 0; width: 22px; height: 22px; border-radius: 50%;
  background: var(--accent-50); color: var(--accent-600);
  display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; margin-top: 3px;
}
.feature-item h4 { font-size: 15.5px; margin-bottom: 4px; }
.feature-item p { font-size: 14px; color: var(--ink-600); }

/* 双栏内容 */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.split-media img { border-radius: var(--r-lg); border: 1px solid var(--ink-200); width: 100%; }

/* 列表卡片组 */
.link-list { display: grid; gap: 12px; }
.link-list a {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 15px 20px; background: #fff; border: 1px solid var(--ink-200);
  border-radius: var(--r-md); font-size: 15px; font-weight: 500; color: var(--ink-800);
}
.link-list a:hover { border-color: var(--brand-300); background: var(--brand-50); color: var(--brand-700); }
.link-list .ll-arrow { color: var(--accent-500); flex-shrink: 0; }

/* 相关链接脚注 */
.related { margin-top: 52px; padding-top: 28px; border-top: 1px solid var(--ink-200); }
.related h3 { font-size: 17px; margin-bottom: 16px; }

/* 更新时间 */
.updated { font-size: 13px; color: var(--ink-400); margin-top: 34px; padding-top: 16px; border-top: 1px dashed var(--ink-200); }

/* ==================== 21. 动画 ==================== */
.fade-up { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.fade-up.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .fade-up { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ==================== 22. 响应式 ==================== */
@media (max-width: 1080px) {
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .logo-grid { grid-template-columns: repeat(4, 1fr); }
  .g-side, .g-side-left { grid-template-columns: 1fr; }
  .toc { position: static; }
}
@media (max-width: 860px) {
  .section { padding: 62px 0; }
  .g-3, .g-4 { grid-template-columns: repeat(2, 1fr); }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 26px; }
  .page-head h1 { font-size: 27px; }
  h2.section-title { font-size: 26px; }
  .cta-band { padding: 32px 26px; }
  .prose h2 { font-size: 22px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .logo-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 560px) {
  .container, .container-narrow { padding: 0 16px; }
  .g-2, .g-3, .g-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .logo-grid { grid-template-columns: repeat(2, 1fr); }
  .btn { padding: 11px 20px; font-size: 14.5px; }
  .brand img { width: 118px; }
  .bar-label { width: 100px; font-size: 13px; }
  .stat-num { font-size: 28px; }
}

/* ==================== 23. 打印 ==================== */
@media print {
  .site-header, .site-footer, .cta-band, .toc { display: none; }
  body { font-size: 12pt; color: #000; }
  .page-head { background: none; color: #000; padding: 0 0 16px; }
  .page-head h1 { color: #000; }
  .answer-block { border: 1px solid #999; background: none; }
}