/* ==========================================================================
   CG包网 (CGBAOWANG) — 全站样式表
   设计语言：大厂风格深色主题 · 蓝紫/青渐变点缀 · 玻璃拟态导航 · 柔和圆角阴影
   技术：纯 CSS3（变量 / Grid / Flexbox / 动画），无框架
   ========================================================================== */

/* ---------- 0. 自托管字体：Inter ----------
   说明：为优化 LCP，Inter 字体由 Google Fonts 改为本地自托管（fonts/ 目录）。
   - 文件来源：Google Fonts latin 子集 woff2（Inter v20 可变字体，单文件覆盖
     100–900 全部字重，fvar 表已验证）
   - 单条 @font-face + font-weight: 100 900 范围声明：浏览器只下载 1 个文件，
     任意字重（300/400/500/600/700/800）均由该可变字体按需渲染
   - local('Inter')：本机已安装 Inter 时优先使用，零网络请求
   - font-display: swap：字体加载完成前回退系统字体，不阻塞首屏渲染
   注意：font-family 仍叫 'Inter'，与全站 --font 变量声明保持一致，视觉不变。 */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: local('Inter'), url('fonts/Inter-400.woff2') format('woff2');
}

/* ---------- 1. 设计变量 ---------- */
:root {
  /* 色板 */
  --bg: #070912;                 /* 页面底色：深空蓝黑 */
  --bg-2: #0b0e1d;               /* 次级底色 */
  --surface: #10142a;            /* 卡片表面 */
  --surface-2: #161b38;          /* 抬升表面 */
  --border: rgba(148, 158, 200, 0.14);      /* 常规描边 */
  --border-strong: rgba(148, 158, 200, 0.30);/* 强调描边 */
  --text-1: #f2f4fb;             /* 主文字 */
  --text-2: #b5bcd0;             /* 次级文字 */
  --text-3: #7e86a4;             /* 弱化文字 */
  --brand: #7c6cff;              /* 品牌蓝紫 */
  --brand-strong: #5b4bff;       /* 深蓝紫 */
  --cyan: #37d5f2;               /* 品牌青 */
  --green: #34d399;              /* 成功绿 */
  --grad: linear-gradient(120deg, #7c6cff 0%, #9d7bff 50%, #37d5f2 100%);   /* 主渐变 */
  --grad-soft: linear-gradient(120deg, rgba(124,108,255,.16), rgba(55,213,242,.16));

  /* 阴影（蓝调柔和阴影） */
  --shadow-card: 0 24px 60px -28px rgba(28, 24, 96, 0.60), 0 8px 24px -12px rgba(0, 0, 0, 0.55);
  --shadow-btn: 0 12px 32px -12px rgba(124, 108, 255, 0.60);
  --shadow-glow: 0 0 80px -12px rgba(124, 108, 255, 0.35);

  /* 圆角与容器 */
  --radius: 16px;
  --radius-sm: 10px;
  --container: 1160px;

  /* 字体栈：Inter + 中文系统字体 */
  --font: "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
          system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body.menu-open { overflow: hidden; } /* 移动端菜单打开时锁定滚动 */

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

::selection { background: rgba(124, 108, 255, 0.45); color: #fff; }

/* 键盘可达性焦点环 */
:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; border-radius: 4px; }

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

.section { padding: 96px 0; position: relative; }
.section-tight { padding: 72px 0; }

.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section-head.left { margin-left: 0; text-align: left; }

/* 小标签（眉题） */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 16px;
}
.eyebrow::before { content: ""; width: 22px; height: 1.5px; background: var(--grad); border-radius: 2px; }

/* ---------- 4. 排版 ---------- */
h1, h2, h3, h4 {
  color: var(--text-1); font-weight: 700; line-height: 1.22;
  letter-spacing: -0.02em; text-wrap: balance;
}

.h1-hero {
  font-size: clamp(40px, 6.4vw, 64px);
  font-weight: 800; letter-spacing: -0.035em; line-height: 1.12;
}

.h2 { font-size: clamp(28px, 3.6vw, 40px); letter-spacing: -0.03em; }
.h3 { font-size: 20px; letter-spacing: -0.01em; }

.lead { font-size: 18px; color: var(--text-2); line-height: 1.75; }

.text-grad {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

.muted { color: var(--text-3); }
.small { font-size: 14px; }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 13px 26px; border-radius: 12px;
  font-size: 15px; font-weight: 600; line-height: 1; white-space: nowrap;
  transition: transform var(--transition), box-shadow var(--transition),
              background var(--transition), border-color var(--transition), color var(--transition);
}
.btn:active { transform: translateY(0) scale(0.98); }

.btn-primary {
  color: #fff;
  background: linear-gradient(120deg, #6d5bff 0%, #8b6dff 55%, #37d5f2 130%);
  box-shadow: var(--shadow-btn);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 44px -14px rgba(124, 108, 255, 0.75); }

.btn-ghost {
  color: var(--text-1);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-strong);
}
.btn-ghost:hover { border-color: var(--brand); background: rgba(124, 108, 255, 0.10); transform: translateY(-2px); }

.btn-lg { padding: 16px 34px; font-size: 16px; border-radius: 14px; }
.btn-block { width: 100%; }

/* ---------- 6. 页头 / 玻璃拟态导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(7, 9, 18, 0.66);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.site-header.scrolled { border-bottom-color: var(--border); background: rgba(7, 9, 18, 0.82); }

.nav { display: flex; align-items: center; gap: 28px; height: 72px; }

.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--text-1); letter-spacing: -0.01em; }
.brand-mark { width: 30px; height: 30px; flex: none; }

.nav-menu { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav-menu a {
  display: inline-flex; align-items: center;
  padding: 9px 14px; border-radius: 9px;
  font-size: 14.5px; font-weight: 500; color: var(--text-2);
  transition: color var(--transition), background var(--transition);
}
.nav-menu a:hover { color: var(--text-1); background: rgba(255, 255, 255, 0.06); }
.nav-menu a.active { color: #fff; background: rgba(124, 108, 255, 0.16); }
.nav-cta { margin-left: 12px; padding: 11px 20px !important; font-size: 14px !important; }

/* 汉堡按钮（移动端） */
.nav-toggle {
  display: none; margin-left: auto;
  width: 44px; height: 44px; border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  align-items: center; justify-content: center;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  display: block; width: 20px; height: 2px; border-radius: 2px;
  background: var(--text-1); transition: transform var(--transition), opacity var(--transition);
  content: ""; position: relative;
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after { position: absolute; top: 6px; }
.nav-toggle.active span { background: transparent; }
.nav-toggle.active span::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle.active span::after { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 7. Hero ---------- */
.hero { position: relative; padding: 120px 0 110px; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(640px 340px at 18% 8%, rgba(124, 108, 255, 0.22), transparent 62%),
    radial-gradient(760px 400px at 82% 14%, rgba(55, 213, 242, 0.14), transparent 60%),
    radial-gradient(1000px 560px at 50% 118%, rgba(91, 75, 255, 0.20), transparent 62%);
}
/* 网格背景线 */
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(148, 158, 200, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 158, 200, 0.07) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(720px 460px at 50% 0%, #000 20%, transparent 75%);
  mask-image: radial-gradient(720px 460px at 50% 0%, #000 20%, transparent 75%);
}

.hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: center; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 14px; border-radius: 999px;
  font-size: 13px; font-weight: 600; color: var(--text-1);
  background: var(--grad-soft); border: 1px solid rgba(124, 108, 255, 0.35);
  margin-bottom: 24px;
}
.hero-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 12px var(--green); }

.hero h1 { margin-bottom: 22px; }
.hero .lead { max-width: 540px; margin-bottom: 36px; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 44px; }

/* 微型数据条（hero 下方） */
.hero-mini { display: flex; flex-wrap: wrap; gap: 28px; }
.hero-mini-item { display: flex; align-items: center; gap: 10px; font-size: 13.5px; color: var(--text-3); }
.hero-mini-item svg { color: var(--cyan); flex: none; }

/* Hero 右侧：控制台拟真卡片 */
.hero-visual { position: relative; }
.console {
  position: relative; z-index: 1;
  border: 1px solid var(--border-strong); border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(22, 27, 56, 0.9), rgba(13, 16, 34, 0.95));
  box-shadow: var(--shadow-card), var(--shadow-glow);
  overflow: hidden;
}
.console-bar { display: flex; align-items: center; gap: 8px; padding: 13px 16px; border-bottom: 1px solid var(--border); }
.console-bar i { width: 10px; height: 10px; border-radius: 50%; background: #3a4266; }
.console-bar i:nth-child(1) { background: #ff5f57; }
.console-bar i:nth-child(2) { background: #febc2e; }
.console-bar i:nth-child(3) { background: #28c840; }
.console-body { padding: 20px; }
.console-row { display: flex; align-items: center; gap: 12px; padding: 11px 0; border-bottom: 1px dashed var(--border); }
.console-row:last-child { border-bottom: none; }
.console-row .label { width: 84px; font-size: 12px; color: var(--text-3); flex: none; }
.console-bar-grow { height: 10px; border-radius: 6px; background: linear-gradient(90deg, rgba(124,108,255,.7), rgba(55,213,242,.7)); flex: 1; }
.console-bar-grow.g1 { width: 58%; } .console-bar-grow.g2 { width: 82%; }
.console-bar-grow.g3 { width: 46%; } .console-bar-grow.g4 { width: 70%; }
.console-row .val { font-size: 12.5px; font-weight: 700; color: var(--text-1); font-variant-numeric: tabular-nums; }

/* 浮动小徽章 */
.float-chip {
  position: absolute; z-index: 2; display: flex; align-items: center; gap: 8px;
  padding: 10px 14px; border-radius: 12px;
  font-size: 12.5px; font-weight: 600; color: var(--text-1);
  background: rgba(16, 20, 42, 0.88); border: 1px solid var(--border-strong);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  box-shadow: var(--shadow-card);
  animation: floatY 5s ease-in-out infinite;
}
.float-chip svg { color: var(--cyan); flex: none; }
.float-chip.fc-1 { top: 8%; right: -14px; }
.float-chip.fc-2 { bottom: 10%; left: -18px; animation-delay: -2.5s; }
@keyframes floatY { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* ---------- 8. 数据统计 ---------- */
.stats {
  border-block: 1px solid var(--border);
  background: var(--bg-2);
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 52px 0; }
.stat { text-align: center; }
.stat-num {
  display: block;
  font-size: clamp(38px, 4.6vw, 52px); font-weight: 800; letter-spacing: -0.03em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  font-variant-numeric: tabular-nums; line-height: 1.1; margin-bottom: 8px;
}
.stat-label { font-size: 14.5px; color: var(--text-3); }

/* ---------- 9. 卡片 ---------- */
.card {
  position: relative;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.015));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.card:hover { transform: translateY(-5px); border-color: rgba(124, 108, 255, 0.5); box-shadow: var(--shadow-card); }

.card-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 52px; height: 52px; border-radius: 14px; margin-bottom: 20px;
  background: var(--grad-soft); border: 1px solid rgba(124, 108, 255, 0.3);
  color: var(--cyan);
}
.card h3 { margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--text-2); }
.card-link { margin-top: 16px; display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--brand); }
.card-link:hover { color: var(--cyan); }
.card-link svg { transition: transform var(--transition); }
.card-link:hover svg { transform: translateX(4px); }

/* 网格 */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.grid-6 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* ---------- 10. 服务宫格 ---------- */
.service-card { text-align: left; }
.service-card .card-icon { margin-bottom: 18px; }
.service-tag {
  position: absolute; top: 18px; right: 18px;
  font-size: 11.5px; font-weight: 600; letter-spacing: 0.06em;
  color: var(--cyan); padding: 4px 10px; border-radius: 999px;
  background: rgba(55, 213, 242, 0.1); border: 1px solid rgba(55, 213, 242, 0.28);
}

/* ---------- 11. 市场卡片 ---------- */
.market-card { text-align: center; padding: 36px 24px; }
.market-code {
  display: inline-flex; align-items: center; justify-content: center;
  width: 64px; height: 64px; border-radius: 18px; margin-bottom: 18px;
  font-size: 20px; font-weight: 800; letter-spacing: 0.04em; color: #fff;
  background: linear-gradient(135deg, #6d5bff, #37d5f2);
  box-shadow: var(--shadow-btn);
}
.market-card h3 { margin-bottom: 10px; }

/* ---------- 12. 后台系统区块 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }

.feature-list { display: grid; gap: 18px; margin-top: 28px; }
.feature-item { display: flex; gap: 14px; }
.feature-item .fi-icon {
  flex: none; width: 38px; height: 38px; border-radius: 11px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--grad-soft); border: 1px solid rgba(124, 108, 255, 0.3); color: var(--cyan);
}
.feature-item h4 { font-size: 16px; margin-bottom: 4px; }
.feature-item p { font-size: 14px; color: var(--text-3); }

/* ---------- 13. 步骤条 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
.step { position: relative; padding: 26px; }
.step::before {
  counter-increment: step; content: "0" counter(step);
  display: inline-flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; border-radius: 13px; margin-bottom: 16px;
  font-size: 16px; font-weight: 800; color: #fff;
  background: linear-gradient(135deg, #6d5bff, #37d5f2);
  box-shadow: var(--shadow-btn);
}
.step h3 { font-size: 17px; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--text-3); }

/* ---------- 14. FAQ 手风琴 ---------- */
.accordion { display: grid; gap: 14px; max-width: 860px; margin: 0 auto; }
.accordion-item {
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.025);
  transition: border-color var(--transition), background var(--transition);
  overflow: hidden;
}
.accordion-item.open { border-color: rgba(124, 108, 255, 0.5); background: rgba(124, 108, 255, 0.05); }

.accordion-btn {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 22px; text-align: left;
  font-size: 16px; font-weight: 600; color: var(--text-1);
  transition: color var(--transition);
}
.accordion-btn:hover { color: var(--cyan); }
.accordion-btn .chev {
  flex: none; width: 30px; height: 30px; border-radius: 9px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border-strong); color: var(--text-2);
  transition: transform var(--transition), background var(--transition), color var(--transition);
}
.accordion-item.open .chev { transform: rotate(180deg); background: var(--grad-soft); color: var(--cyan); border-color: rgba(124,108,255,.4); }

.accordion-panel { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.accordion-panel-inner { padding: 0 22px 22px; font-size: 14.5px; color: var(--text-2); }

/* ---------- 15. CTA 横幅 ---------- */
.cta-band { position: relative; overflow: hidden; text-align: center; padding: 84px 0; }
.cta-band::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(520px 300px at 25% 40%, rgba(124, 108, 255, 0.28), transparent 65%),
    radial-gradient(520px 300px at 78% 60%, rgba(55, 213, 242, 0.20), transparent 65%);
}
.cta-band .container { position: relative; z-index: 1; }
.cta-band h2 { margin-bottom: 16px; }
.cta-band p { max-width: 620px; margin: 0 auto 36px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

/* ---------- 16. 页脚 ---------- */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-2); padding: 64px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 48px; }
.footer-brand p { font-size: 14px; color: var(--text-3); margin-top: 16px; max-width: 300px; }
.footer-col h4 { font-size: 14px; font-weight: 700; color: var(--text-1); margin-bottom: 18px; }
.footer-col ul { display: grid; gap: 11px; }
.footer-col a { font-size: 14px; color: var(--text-3); transition: color var(--transition); }
.footer-col a:hover { color: var(--cyan); }
.footer-contact a { display: inline-flex; align-items: center; gap: 8px; }
.footer-bottom {
  border-top: 1px solid var(--border); padding-top: 24px;
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between;
  font-size: 13px; color: var(--text-3);
}

/* ---------- 17. 内页 Hero ---------- */
.page-hero { position: relative; padding: 88px 0 72px; overflow: hidden; }
.page-hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(560px 300px at 12% 10%, rgba(124, 108, 255, 0.20), transparent 62%),
    radial-gradient(640px 340px at 88% 30%, rgba(55, 213, 242, 0.12), transparent 60%);
}
.page-hero .container { position: relative; z-index: 1; max-width: 820px; }
.page-hero h1 { font-size: clamp(32px, 4.6vw, 48px); font-weight: 800; letter-spacing: -0.03em; margin-bottom: 18px; }
.page-hero .lead { font-size: 17px; }
.crumb { font-size: 13px; color: var(--text-3); margin-bottom: 20px; }
.crumb a { color: var(--brand); }
.crumb a:hover { color: var(--cyan); }

/* ---------- 18. 对比表 ---------- */
.compare { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 14.5px; }
.compare th, .compare td { padding: 15px 18px; text-align: left; border-bottom: 1px solid var(--border); }
.compare thead th { font-weight: 700; color: var(--text-1); background: rgba(255, 255, 255, 0.03); }
.compare thead th:first-child { border-radius: 12px 0 0 0; }
.compare thead th:last-child { border-radius: 0 12px 0 0; }
.compare tbody tr:hover { background: rgba(124, 108, 255, 0.05); }
.compare .yes { color: var(--green); font-weight: 600; }
.compare .no { color: var(--text-3); }

/* ---------- 19. 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: start; }
.contact-main {
  padding: 44px; border-radius: 20px;
  background: linear-gradient(180deg, rgba(22, 27, 56, 0.85), rgba(13, 16, 34, 0.9));
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}
.contact-main h2 { margin-bottom: 14px; }
.contact-main > p { margin-bottom: 32px; }
.tg-cta {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 17px 28px; border-radius: 14px; margin-bottom: 28px;
  font-size: 17px; font-weight: 700; color: #fff;
  background: linear-gradient(120deg, #2aabee, #229ed9);
  box-shadow: 0 14px 36px -12px rgba(42, 171, 238, 0.55);
  transition: transform var(--transition), box-shadow var(--transition);
}
.tg-cta:hover { transform: translateY(-3px); box-shadow: 0 20px 46px -14px rgba(42, 171, 238, 0.7); }
.tg-handle {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13.5px; color: var(--text-3); letter-spacing: 0.02em;
}
.contact-facts { display: grid; gap: 16px; }
.contact-fact { display: flex; gap: 14px; align-items: flex-start; padding: 20px; }
.contact-fact .fi-icon { flex: none; }
.contact-fact h4 { font-size: 15px; margin-bottom: 4px; }
.contact-fact p { font-size: 13.5px; color: var(--text-3); }

/* ---------- 20. 动画：滚动显现 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.65s ease, transform 0.65s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .float-chip, .hero::before, .hero::after { animation: none !important; }
  html { scroll-behavior: auto; }
}

/* ---------- 21. 响应式 ---------- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-6 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .hero-inner { grid-template-columns: 1fr; gap: 56px; }
  .hero-visual { max-width: 560px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  /* 导航折叠为抽屉 */
  .nav-toggle { display: inline-flex; }
  .nav-menu {
    position: fixed; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 4px;
    padding: 18px 24px 26px;
    background: rgba(7, 9, 18, 0.96);
    -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: opacity var(--transition), transform var(--transition);
  }
  .nav-menu.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-menu a { padding: 13px 14px; font-size: 16px; }
  .nav-cta { margin: 10px 0 0; justify-content: center; }
  .nav-cta.btn { display: flex; }
}

@media (max-width: 640px) {
  .section { padding: 64px 0; }
  .grid-2, .grid-3, .grid-4, .grid-6 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .hero { padding: 72px 0 80px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 34px 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-main { padding: 28px; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; }
  .float-chip.fc-1 { right: 4px; }
  .float-chip.fc-2 { left: 4px; }
}