/* ============================================
   矩阵起源 · 官网设计系统
   Matrix Qiyuan — Design Tokens & Components
   ============================================ */

:root {
  /* 品牌色 —— 校准自品牌 Logo 蓝 */
  --brand: #2b7fff;
  --brand-700: #1d5fd6;
  --brand-600: #1f6bf0;
  --brand-100: #d6e6ff;
  --brand-50: #eef5ff;
  --accent: #00c2a8;
  --accent-50: #e6faf6;

  /* 中性色 */
  --ink: #0f172a;
  --ink-2: #334155;
  --ink-3: #64748b;
  --ink-4: #94a3b8;
  --line: #e5ebf3;
  --line-2: #eef2f8;
  --bg: #ffffff;
  --bg-soft: #f6f9fd;
  --bg-soft-2: #eef4fb;
  --dark: #0a1628;
  --dark-2: #111f36;

  /* 排版 */
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-num: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;

  /* 尺寸 */
  --maxw: 1200px;
  --radius: 14px;
  --radius-lg: 20px;
  --radius-sm: 8px;
  --header-h: 68px;

  /* 阴影 */
  --sh-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --sh: 0 8px 24px -10px rgba(15, 23, 42, 0.14);
  --sh-lg: 0 24px 56px -20px rgba(15, 23, 42, 0.22);
  --sh-brand: 0 12px 28px -12px rgba(11, 95, 255, 0.45);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5 { color: var(--ink); line-height: 1.25; margin: 0; font-weight: 650; letter-spacing: -0.01em; }
p { margin: 0; }
a { color: var(--brand); text-decoration: none; }
img, svg { max-width: 100%; display: block; }
ul { margin: 0; padding: 0; list-style: none; }

/* ---------- 布局 ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }
.section-soft { background: var(--bg-soft); }
.section-soft-2 { background: var(--bg-soft-2); }
.section-dark { background: var(--dark); color: #cbd5e1; }
.section-dark h2, .section-dark h3 { color: #fff; }

.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-5 { grid-template-columns: repeat(5, 1fr); }

/* ---------- 排版工具 ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.08em;
  color: var(--brand); text-transform: uppercase;
  padding: 6px 14px; border-radius: 999px;
  background: var(--brand-50); border: 1px solid var(--brand-100);
}
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--brand); }
.section-dark .eyebrow { background: rgba(11, 95, 255, 0.16); border-color: rgba(96, 165, 250, 0.35); color: #93c5fd; }
.section-dark .eyebrow::before { background: #60a5fa; }

.h1 { font-size: clamp(34px, 5.2vw, 58px); font-weight: 700; letter-spacing: -0.03em; }
.h2 { font-size: clamp(28px, 3.6vw, 42px); font-weight: 680; letter-spacing: -0.02em; }
.h3 { font-size: clamp(20px, 2.2vw, 25px); font-weight: 640; }
.h4 { font-size: 18px; font-weight: 620; }
.lead { font-size: clamp(16px, 1.5vw, 19px); color: var(--ink-3); line-height: 1.75; }
.section-dark .lead { color: #94a3b8; }
.text-brand { color: var(--brand); }
.text-muted { color: var(--ink-3); }
.text-sm { font-size: 14px; }
.center { text-align: center; }
.mx-auto { margin-inline: auto; }
.measure { max-width: 720px; }
.mt-8 { margin-top: 8px; } .mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; } .mt-40 { margin-top: 40px; }
.mt-48 { margin-top: 48px; } .mt-56 { margin-top: 56px; }
.mb-12 { margin-bottom: 12px; } .mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; } .mb-32 { margin-bottom: 32px; }
.mb-48 { margin-bottom: 48px; }

.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head.center { margin-inline: auto; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: inherit; font-size: 15px; font-weight: 600;
  padding: 12px 22px; border-radius: var(--radius-sm);
  border: 1px solid transparent; cursor: pointer;
  transition: all 0.22s var(--ease); white-space: nowrap;
}
.btn-primary { background: var(--brand); color: #fff; box-shadow: var(--sh-brand); }
.btn-primary:hover { background: var(--brand-700); transform: translateY(-1px); box-shadow: 0 16px 32px -12px rgba(11, 95, 255, 0.55); }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); background: var(--brand-50); }
.btn-light { background: #fff; color: var(--brand-700); }
.btn-light:hover { transform: translateY(-1px); box-shadow: var(--sh-lg); }
.btn-outline-light { background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.28); }
.btn-outline-light:hover { background: rgba(255, 255, 255, 0.1); border-color: rgba(255, 255, 255, 0.5); }
.btn-sm { padding: 9px 16px; font-size: 14px; }
.btn-lg { padding: 15px 30px; font-size: 16px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; }
.btn-row.center { justify-content: center; }

/* ---------- 页头 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.site-header.is-scrolled { border-bottom-color: var(--line); box-shadow: 0 1px 12px rgba(15, 23, 42, 0.05); }
.header-inner { display: flex; align-items: center; gap: 32px; height: var(--header-h); }

.logo { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
/* LOGO 原始比例 482:400（约 1.205:1），必须按高度定尺寸、宽度自动，禁止强制正方形 */
.logo-mark { height: 34px; width: auto; flex-shrink: 0; object-fit: contain; }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-text b { font-size: 17px; font-weight: 700; color: var(--ink); letter-spacing: -0.01em; }
.logo-text small { font-size: 9.5px; font-weight: 600; letter-spacing: 0.16em; color: var(--ink-4); }

.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a {
  position: relative; font-size: 15px; font-weight: 550; color: var(--ink-2);
  padding: 8px 14px; border-radius: var(--radius-sm); transition: all 0.2s var(--ease);
}
.nav a:hover { color: var(--brand); background: var(--brand-50); }
.nav a.is-active { color: var(--brand); }
.nav a.is-active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px;
  height: 2px; border-radius: 2px; background: var(--brand);
}
.header-actions { display: flex; align-items: center; gap: 12px; }

.nav-toggle {
  display: none; width: 42px; height: 42px; padding: 0;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm); cursor: pointer;
}
.nav-toggle span { display: block; width: 18px; height: 1.6px; margin: 3.5px auto; background: var(--ink); border-radius: 2px; transition: all 0.24s var(--ease); }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(5.1px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-5.1px) rotate(-45deg); }

.mobile-nav {
  display: none; position: fixed; inset: var(--header-h) 0 0 0; z-index: 99;
  background: #fff; padding: 20px 24px 40px; overflow-y: auto;
  border-top: 1px solid var(--line);
}
.mobile-nav.is-open { display: block; }
.mobile-nav a { display: block; font-size: 17px; font-weight: 600; color: var(--ink); padding: 15px 0; border-bottom: 1px solid var(--line-2); }
.mobile-nav .btn { margin-top: 24px; width: 100%; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 104px 0 88px; overflow: hidden; background: #fff; }
.hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.hero-bg .glow {
  position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.5;
}
.hero-bg .glow-1 { width: 620px; height: 620px; top: -280px; right: -140px; background: radial-gradient(circle, #8fb8ff 0%, rgba(143, 184, 255, 0) 70%); }
.hero-bg .glow-2 { width: 480px; height: 480px; bottom: -260px; left: -120px; background: radial-gradient(circle, #8ce8da 0%, rgba(140, 232, 218, 0) 70%); opacity: 0.42; }
.hero-grid-lines {
  position: absolute; inset: 0;
  background-image: linear-gradient(var(--line-2) 1px, transparent 1px), linear-gradient(90deg, var(--line-2) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 20%, transparent 75%);
  opacity: 0.7;
}
.hero-inner { position: relative; z-index: 1; }
.hero .h1 { margin-bottom: 22px; }
.hero .lead { max-width: 620px; }

.badge-pill {
  display: inline-flex; align-items: center; gap: 10px;
  background: #fff; border: 1px solid var(--line);
  border-radius: 999px; padding: 6px 16px 6px 6px;
  font-size: 13.5px; font-weight: 550; color: var(--ink-2);
  box-shadow: var(--sh-sm); margin-bottom: 26px;
}
.badge-pill i {
  display: inline-flex; align-items: center; font-style: normal;
  background: var(--brand-50); color: var(--brand-700);
  border-radius: 999px; padding: 3px 10px; font-size: 12px; font-weight: 650;
}

/* ---------- 卡片 ---------- */
.card {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 30px;
  transition: all 0.28s var(--ease);
}
.card-hover:hover { transform: translateY(-4px); box-shadow: var(--sh); border-color: var(--brand-100); }
.card-icon {
  width: 46px; height: 46px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: var(--brand-50); color: var(--brand); margin-bottom: 20px;
}
.card-icon svg { width: 23px; height: 23px; }
.card h3 { font-size: 18px; margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--ink-3); line-height: 1.72; }
.card-accent { background: linear-gradient(180deg, #fff 0%, var(--brand-50) 100%); border-color: var(--brand-100); }

.card-dark { background: rgba(255, 255, 255, 0.045); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--radius); padding: 30px; }
.card-dark h3 { color: #fff; font-size: 18px; margin-bottom: 10px; }
.card-dark p { font-size: 14.5px; color: #94a3b8; }
.card-dark .card-icon { background: rgba(96, 165, 250, 0.14); color: #60a5fa; }

/* 列表勾选 */
.check-list li {
  position: relative; padding-left: 30px; margin-bottom: 13px;
  font-size: 15px; color: var(--ink-2); line-height: 1.65;
}
.check-list li::before {
  content: ""; position: absolute; left: 0; top: 7px;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--brand-50) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230b5fff' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center / 11px no-repeat;
}
.section-dark .check-list li { color: #cbd5e1; }

/* ---------- 数据 ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat { text-align: center; padding: 28px 16px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.stat-num {
  font-size: clamp(30px, 3.4vw, 44px); font-weight: 700; color: var(--ink);
  letter-spacing: -0.03em; line-height: 1.1; font-variant-numeric: tabular-nums;
}
.stat-num em { font-style: normal; font-size: 0.55em; font-weight: 650; color: var(--brand); margin-left: 2px; }
.stat-label { font-size: 14px; color: var(--ink-3); margin-top: 8px; }
.section-dark .stat { background: rgba(255, 255, 255, 0.045); border-color: rgba(255, 255, 255, 0.1); }
.section-dark .stat-num { color: #fff; }
.section-dark .stat-label { color: #94a3b8; }
.stat-note { font-size: 12.5px; color: var(--ink-4); text-align: center; margin-top: 20px; line-height: 1.6; }
.section-dark .stat-note { color: #64748b; }

/* ---------- 步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
.step { position: relative; }
.step-num {
  width: 40px; height: 40px; border-radius: 11px;
  background: var(--brand); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 16px; margin-bottom: 18px;
  box-shadow: var(--sh-brand);
}
.step h3 { font-size: 17px; margin-bottom: 8px; }
.step p { font-size: 14.5px; color: var(--ink-3); }

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  cursor: pointer; list-style: none; padding: 22px 44px 22px 0;
  font-size: 16.5px; font-weight: 600; color: var(--ink);
  position: relative; transition: color 0.2s var(--ease);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--brand); }
.faq-item summary::after {
  content: ""; position: absolute; right: 6px; top: 50%; margin-top: -5px;
  width: 11px; height: 11px; border-right: 2px solid var(--ink-4); border-bottom: 2px solid var(--ink-4);
  transform: rotate(45deg); transition: transform 0.24s var(--ease);
}
.faq-item[open] summary::after { transform: rotate(-135deg); margin-top: -2px; }
.faq-item[open] summary { color: var(--brand); }
.faq-answer { padding: 0 8% 26px 0; font-size: 15px; color: var(--ink-3); line-height: 1.8; }
.faq-answer ul { margin-top: 12px; }
.faq-answer li { position: relative; padding-left: 20px; margin-bottom: 8px; }
.faq-answer li::before { content: ""; position: absolute; left: 4px; top: 11px; width: 5px; height: 5px; border-radius: 50%; background: var(--brand); }

/* ---------- 对比 / 表格 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
table { width: 100%; border-collapse: collapse; min-width: 560px; }
th, td { padding: 16px 20px; text-align: left; font-size: 14.5px; border-bottom: 1px solid var(--line-2); }
th { background: var(--bg-soft); font-weight: 620; color: var(--ink); font-size: 14px; }
td { color: var(--ink-3); }
tbody tr:last-child td { border-bottom: none; }

/* ---------- 引用 / 案例 ---------- */
.quote-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; }
.quote-card .quote-text { font-size: 16px; color: var(--ink-2); line-height: 1.8; }
.quote-card .quote-text::before { content: "\201C"; font-size: 44px; color: var(--brand-100); font-family: Georgia, serif; line-height: 0; margin-right: 4px; vertical-align: -8px; }
.quote-author { display: flex; align-items: center; gap: 12px; margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--line-2); }
.quote-avatar { width: 42px; height: 42px; border-radius: 50%; background: var(--brand-50); color: var(--brand-700); display: flex; align-items: center; justify-content: center; font-weight: 650; font-size: 15px; flex-shrink: 0; }
.quote-meta b { display: block; font-size: 14.5px; color: var(--ink); font-weight: 620; }
.quote-meta span { font-size: 13px; color: var(--ink-4); }

/* ---------- CTA ---------- */
.cta-panel {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, #0a1628 0%, #10244a 55%, #0d3b8e 100%);
  border-radius: 24px; padding: 64px 48px; text-align: center; color: #cbd5e1;
}
.cta-panel::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, #000, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, #000, transparent 78%);
}
.cta-panel > * { position: relative; z-index: 1; }
.cta-panel h2 { color: #fff; font-size: clamp(26px, 3.2vw, 38px); margin-bottom: 16px; }
.cta-panel p { max-width: 560px; margin: 0 auto 32px; color: #b6c6e0; }

/* ---------- 面包屑 ---------- */
.breadcrumb { font-size: 13px; color: var(--ink-4); padding: 22px 0 0; }
.breadcrumb a { color: var(--ink-4); }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb span { margin: 0 7px; }
.page-hero { padding: 40px 0 72px; background: var(--bg-soft); border-bottom: 1px solid var(--line); }
.page-hero .h1 { font-size: clamp(30px, 4vw, 46px); margin-bottom: 16px; }

/* ---------- 内容块 ---------- */
.prose { font-size: 16px; color: var(--ink-2); line-height: 1.85; }
.prose h2 { font-size: 26px; margin: 44px 0 16px; }
.prose h3 { font-size: 19px; margin: 32px 0 12px; }
.prose p { margin-bottom: 16px; }
.prose ul { margin: 0 0 18px; }
.prose ul li { position: relative; padding-left: 22px; margin-bottom: 10px; }
.prose ul li::before { content: ""; position: absolute; left: 4px; top: 12px; width: 6px; height: 6px; border-radius: 50%; background: var(--brand); }
.prose strong { color: var(--ink); font-weight: 620; }
.prose-meta { font-size: 13px; color: var(--ink-4); margin-bottom: 32px; }

.callout { border-left: 3px solid var(--brand); background: var(--brand-50); padding: 18px 22px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; font-size: 15px; color: var(--ink-2); margin: 26px 0; }
.callout-warn { border-left-color: #d97706; background: #fffbeb; }
.callout b { color: var(--ink); }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--dark); color: #94a3b8; padding: 72px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(4, 1fr); gap: 40px; padding-bottom: 48px; }
.footer-brand .logo { margin-bottom: 18px; }
.footer-brand .logo-text b { color: #fff; }
.footer-brand .logo-text small { color: #64748b; }
.footer-brand p { font-size: 13.5px; line-height: 1.75; max-width: 300px; }
.footer-col h4 { color: #fff; font-size: 14px; font-weight: 620; margin-bottom: 16px; }
.footer-col a { display: block; color: #94a3b8; padding: 6px 0; font-size: 13.5px; transition: color 0.2s var(--ease); }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.09); padding: 24px 0 32px; font-size: 13px; }
.footer-legal { color: #64748b; line-height: 1.8; }
.footer-legal a { color: #94a3b8; text-decoration: underline; text-underline-offset: 2px; }
.footer-legal a:hover { color: #fff; }
.trademark-note {
  margin-top: 14px; padding-top: 14px; border-top: 1px solid rgba(255, 255, 255, 0.09);
  color: #64748b; font-size: 12.5px; line-height: 1.75;
}
.footer-links-inline { display: flex; flex-wrap: wrap; gap: 18px; margin-bottom: 12px; }

/* ---------- 动效 ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- 产品控制台 Mockup ---------- */
.hero-split { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.hero-visual { position: relative; }

.mock-window {
  position: relative; background: #fff;
  border: 1px solid var(--line); border-radius: 18px;
  box-shadow: 0 32px 64px -24px rgba(15, 23, 42, 0.28), 0 12px 24px -12px rgba(15, 23, 42, 0.1);
  overflow: hidden;
}
.mock-bar { display: flex; align-items: center; gap: 7px; padding: 13px 16px; background: #f8fafc; border-bottom: 1px solid var(--line-2); }
.mock-bar i { width: 10px; height: 10px; border-radius: 50%; background: #e2e8f0; }
.mock-bar i:nth-child(1) { background: #fda4af; }
.mock-bar i:nth-child(2) { background: #fcd34d; }
.mock-bar i:nth-child(3) { background: #6ee7b7; }
.mock-bar .mock-url { flex: 1; margin-left: 8px; background: #fff; border: 1px solid var(--line-2); border-radius: 6px; font-size: 11px; color: var(--ink-4); padding: 3px 12px; font-family: var(--font-num); }

.mock-body { display: grid; grid-template-columns: 54px 1fr; min-height: 340px; }
.mock-side { background: #0a1628; padding: 14px 0; display: flex; flex-direction: column; align-items: center; gap: 16px; }
.mock-side b { width: 26px; height: 26px; border-radius: 8px; background: rgba(255, 255, 255, 0.09); }
.mock-side b.on { background: var(--brand); box-shadow: 0 0 0 3px rgba(43, 127, 255, 0.25); }

.mock-main { padding: 18px; background: #f6f9fd; }
.mock-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 14px; }
.mock-kpi { background: #fff; border: 1px solid var(--line-2); border-radius: 10px; padding: 11px 12px; }
.mock-kpi small { display: block; font-size: 10px; color: var(--ink-4); margin-bottom: 5px; }
.mock-kpi b { font-size: 16px; color: var(--ink); font-weight: 700; letter-spacing: -0.01em; font-variant-numeric: tabular-nums; }
.mock-kpi b em { font-style: normal; font-size: 10px; font-weight: 650; color: var(--accent); margin-left: 3px; }
.mock-kpi b em.down { color: #f43f5e; }

.mock-chart { background: #fff; border: 1px solid var(--line-2); border-radius: 10px; padding: 12px; margin-bottom: 14px; }
.mock-chart-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.mock-chart-head small { font-size: 10px; color: var(--ink-4); }
.mock-chart-head b { font-size: 11px; color: var(--ink); font-weight: 600; }
.mock-rows { display: flex; flex-direction: column; gap: 8px; }
.mock-row { display: flex; align-items: center; gap: 10px; background: #fff; border: 1px solid var(--line-2); border-radius: 9px; padding: 8px 12px; }
.mock-row i { width: 22px; height: 22px; border-radius: 6px; background: var(--brand-50); flex-shrink: 0; }
.mock-row .r-bar { flex: 1; height: 6px; border-radius: 4px; background: linear-gradient(90deg, var(--brand-100), var(--brand-50)); }
.mock-row b { font-size: 11px; color: var(--ink-2); font-weight: 600; font-variant-numeric: tabular-nums; }

.float-card {
  position: absolute; background: #fff; border: 1px solid var(--line);
  border-radius: 12px; padding: 12px 16px; box-shadow: var(--sh-lg);
  display: flex; align-items: center; gap: 10px; z-index: 2;
}
.float-card i { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 3px var(--accent-50); flex-shrink: 0; }
.float-card b { font-size: 13px; color: var(--ink); font-weight: 650; display: block; line-height: 1.3; }
.float-card small { font-size: 11px; color: var(--ink-4); }
.fc-1 { top: 24px; right: -26px; }
.fc-2 { bottom: 34px; left: -30px; }

/* 滚动漂浮动画 */
@media (prefers-reduced-motion: no-preference) {
  .fc-1 { animation: floaty 5s ease-in-out infinite; }
  .fc-2 { animation: floaty 6s ease-in-out 0.8s infinite; }
}
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }

/* 双栏图文 */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split.rev > :first-child { order: 2; }

/* 流程横条（服务页） */
.flow-band { display: flex; flex-wrap: wrap; gap: 12px; }
.flow-band li {
  flex: 1 1 160px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 16px 18px; font-size: 14px; font-weight: 600; color: var(--ink);
  display: flex; align-items: center; gap: 10px;
}
.flow-band li b { color: var(--brand); font-family: var(--font-num); font-size: 12px; font-weight: 700; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: 0.001ms !important; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .nav { display: none; }
  .nav-toggle { display: block; }
  .header-inner { justify-content: space-between; }
  .header-actions .btn { display: none; }
  .g-4, .g-5 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(3, 1fr); }
  .hero-split { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { max-width: 560px; margin: 0 auto; width: 100%; }
  .fc-1 { right: -8px; }
  .fc-2 { left: -8px; }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .split.rev > :first-child { order: 0; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-sm { padding: 44px 0; }
  .hero { padding: 64px 0 56px; }
  .g-2, .g-3, .g-4, .g-5 { grid-template-columns: 1fr; }
  .container { padding: 0 20px; }
  .cta-panel { padding: 44px 24px; border-radius: 18px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .stat { padding: 22px 12px; }
  .card { padding: 24px; }
  .mock-body { min-height: 300px; }
}
@media (max-width: 480px) {
  .stats { grid-template-columns: 1fr 1fr; gap: 12px; }
  .steps { grid-template-columns: 1fr; }
  .btn-row { flex-direction: column; }
  .btn-row .btn { width: 100%; }
}

/* ---------- 企业微信二维码联系卡 ---------- */
.wecom-card {
  display: grid; grid-template-columns: 236px 1fr; gap: 44px; align-items: center;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 44px; box-shadow: var(--sh);
}
/* 企业微信官方配色（取自 Tencent 官方 LOGO SVG）：#0082EF / #FC0 / #FB6500 / #2DBC00 */
.wecom-qr { margin: 0; background: #fff; border: 1px solid #d3e7ff; border-radius: 18px; padding: 16px; box-shadow: 0 8px 22px rgba(0, 130, 239, 0.09); }
.wecom-qr img { width: 100%; height: auto; aspect-ratio: 1 / 1; display: block; border-radius: 10px; }
.wecom-qr figcaption { text-align: center; font-size: 12.5px; color: var(--ink-4); margin-top: 12px; letter-spacing: 0.02em; }
/* 企业微信官方标识（横版锁定 LOGO，内部含「企业微信」字样，故不再叠加文字） */
.wecom-badge { display: inline-flex; align-items: center; gap: 9px; background: #eff7ff; border: 1px solid #c3e0ff; border-radius: 9px; padding: 7px 14px; }
.wecom-badge img { height: 22px; width: auto; display: block; }
.wecom-badge .lbl { font-size: 12.5px; font-weight: 600; color: #0064bd; letter-spacing: 0.02em; }
.wecom-card .h3 { font-size: 24px; margin-bottom: 12px; letter-spacing: -0.01em; }
.wecom-who {
  display: inline-flex; align-items: center; gap: 12px; margin: 14px 0 22px;
  padding: 10px 18px 10px 10px; background: var(--brand-50);
  border: 1px solid var(--brand-100); border-radius: 999px;
}
.wecom-who .av { width: 38px; height: 38px; border-radius: 50%; background: var(--brand); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 650; font-size: 15px; flex-shrink: 0; }
.wecom-who .nm { font-size: 15px; font-weight: 620; color: var(--ink); line-height: 1.2; }
.wecom-who .rl { font-size: 12.5px; color: var(--ink-3); }
.wecom-card-v {
  max-width: 400px; margin: 0 auto; text-align: center;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 40px 32px; box-shadow: var(--sh);
}
.wecom-card-v > img { width: 220px; height: auto; aspect-ratio: 1 / 1; margin: 0 auto 20px; display: block; border-radius: 14px; border: 1px solid #d3e7ff; padding: 14px; background: #fff; box-shadow: 0 8px 22px rgba(0, 130, 239, 0.09); }
.wecom-card-v h3 { font-size: 21px; margin-bottom: 10px; }
@media (max-width: 768px) {
  .wecom-card { grid-template-columns: 1fr; padding: 32px 24px; gap: 28px; }
  .wecom-qr { max-width: 260px; margin: 0 auto; }
}

/* ---------- 无障碍 ---------- */
.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; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; border-radius: 4px; }
.skip-link { position: absolute; left: -9999px; top: 0; background: #fff; color: var(--brand); padding: 12px 20px; z-index: 200; border-radius: 0 0 8px 0; font-weight: 600; }
.skip-link:focus { left: 0; }