:root {
      --ink: #17202b;
      --muted: #647181;
      --paper: #fffaf5;
      --white: #ffffff;
      --line: #e8e1db;
      --coral: #ff5d57;
      --orange: #ff9d45;
      --blue: #2459f5;
      --cyan: #30c9c9;
      --yellow: #ffd45c;
      --soft-blue: #eef3ff;
      --soft-coral: #fff0ed;
      --shadow: 0 16px 42px rgba(42, 35, 30, .09);
      --radius: 14px;
      --container: 1180px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
      line-height: 1.7;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    .container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(255,250,245,.94);
      border-bottom: 1px solid rgba(232,225,219,.9);
      backdrop-filter: blur(14px);
    }
    .nav {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }
    .brand { display: inline-flex; align-items: center; flex-shrink: 0; }
    .ai-page-logo { width: 146px; }
    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 0;
      flex-wrap: wrap;
    }
    .nav-links a {
      padding: 8px 10px;
      color: #39434e;
      font-size: 13px;
      transition: color .2s ease, transform .2s ease;
    }
    .nav-links a:hover { color: var(--coral); transform: translateY(-2px); }
    .nav-cta, .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: 0;
      cursor: pointer;
      border-radius: 8px;
      font-weight: 700;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    }
    .nav-cta {
      margin-left: 12px;
      padding: 10px 16px;
      background: var(--blue);
      color: #fff;
      font-size: 13px;
    }
    .button { padding: 13px 21px; }
    .button:hover, .nav-cta:hover { transform: translateY(-3px); box-shadow: 0 10px 22px rgba(36,89,245,.22); }
    .button-primary { background: var(--coral); color: #fff; }
    .button-dark { background: var(--ink); color: #fff; }
    .button-light { background: #fff; color: var(--blue); border: 1px solid #d9e2ff; }
    .menu-toggle { display: none; background: transparent; border: 1px solid var(--line); padding: 8px 10px; border-radius: 7px; }
    .hero {
      position: relative;
      overflow: hidden;
      padding: 86px 0 78px;
      background:
        linear-gradient(135deg, rgba(255,93,87,.12), transparent 38%),
        linear-gradient(315deg, rgba(48,201,201,.14), transparent 42%),
        var(--paper);
    }
    .hero:before, .hero:after {
      content: "";
      position: absolute;
      border: 1px solid rgba(36,89,245,.18);
      transform: rotate(18deg);
      pointer-events: none;
    }
    .hero:before { width: 240px; height: 240px; right: -70px; top: 40px; border-radius: 36px; }
    .hero:after { width: 130px; height: 130px; left: -38px; bottom: 20px; border-radius: 50%; border-color: rgba(255,93,87,.28); }
    .hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 64px; align-items: center; position: relative; z-index: 1; }
    .eyebrow, .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--coral);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .08em;
      text-transform: uppercase;
    }
    .eyebrow:before, .section-kicker:before { content: ""; width: 24px; height: 3px; background: var(--coral); }
    h1, h2, h3, p { margin-top: 0; }
    h1 { max-width: 650px; margin-bottom: 22px; font-size: clamp(38px, 6vw, 72px); line-height: 1.12; letter-spacing: 0; }
    .hero-copy { max-width: 630px; color: var(--muted); font-size: 18px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 30px 0 34px; }
    .hero-note { color: #56616d; font-size: 13px; }
    .hero-panel { position: relative; padding: 24px; background: var(--ink); color: #fff; border-radius: 20px 20px 20px 5px; box-shadow: 18px 18px 0 var(--yellow); animation: rise .8s ease both; }
    .hero-panel h2 { font-size: 23px; margin-bottom: 20px; }
    .signal-list { display: grid; gap: 12px; }
    .signal { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.14); }
    .signal:last-child { border-bottom: 0; }
    .signal strong { color: var(--yellow); font-size: 22px; white-space: nowrap; }
    .hero-tag { display: inline-block; margin-top: 18px; padding: 7px 10px; background: var(--cyan); color: var(--ink); border-radius: 5px; font-size: 12px; font-weight: 800; }
    section { padding: 84px 0; }
    .section-head { max-width: 730px; margin-bottom: 38px; }
    .section-head h2 { margin: 10px 0 12px; font-size: clamp(30px, 4vw, 48px); line-height: 1.2; }
    .section-head p { color: var(--muted); margin-bottom: 0; }
    .stats { padding: 22px 0; background: var(--blue); color: #fff; }
    .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
    .stat { padding: 16px 0; border-right: 1px solid rgba(255,255,255,.27); }
    .stat:last-child { border-right: 0; }
    .stat strong { display: block; font-size: 30px; color: var(--yellow); }
    .stat span { font-size: 13px; opacity: .9; }
    .about-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 52px; align-items: start; }
    .about-lead { padding: 30px; background: var(--coral); color: #fff; border-radius: 14px 14px 14px 0; }
    .about-lead h2 { font-size: 34px; line-height: 1.25; }
    .about-lead p { color: #fff; opacity: .93; }
    .about-points { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .point { padding: 20px 0; border-top: 3px solid var(--cyan); }
    .point h3 { margin-bottom: 8px; font-size: 19px; }
    .point p { margin-bottom: 0; color: var(--muted); font-size: 14px; }
    .service-section { background: #f0f5ff; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .service-card { min-height: 190px; padding: 24px; background: #fff; border: 1px solid #dce5ff; border-radius: var(--radius); transition: transform .25s ease, box-shadow .25s ease; }
    .service-card:hover, .review:hover, .case:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
    .service-card:nth-child(3n+1) { border-top: 4px solid var(--coral); }
    .service-card:nth-child(3n+2) { border-top: 4px solid var(--blue); }
    .service-card:nth-child(3n) { border-top: 4px solid var(--cyan); }
    .service-card h3 { margin: 13px 0 8px; font-size: 20px; }
    .service-card p { color: var(--muted); font-size: 14px; margin-bottom: 0; }
    .service-icon { display: inline-flex; width: 36px; height: 36px; align-items: center; justify-content: center; background: var(--yellow); color: var(--ink); border-radius: 8px; font-weight: 900; }
    .workflow { background: #fff; }
    .steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; border-top: 2px solid var(--ink); }
    .step { position: relative; padding: 28px 18px 10px 0; margin-right: 18px; }
    .step:not(:last-child):after { content: "→"; position: absolute; right: -4px; top: 28px; color: var(--coral); font-size: 24px; }
    .step-number { color: var(--coral); font-size: 30px; font-weight: 900; }
    .step h3 { margin: 6px 0; font-size: 17px; }
    .step p { color: var(--muted); font-size: 13px; }
    .solution-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .solution { padding: 25px; background: var(--white); border-left: 5px solid var(--orange); box-shadow: 0 8px 24px rgba(42,35,30,.06); }
    .solution:nth-child(2) { border-color: var(--blue); }
    .solution:nth-child(3) { border-color: var(--cyan); }
    .solution h3 { margin-bottom: 8px; }
    .solution p { color: var(--muted); font-size: 14px; margin-bottom: 0; }
    .network-section { background: var(--ink); color: #fff; }
    .network-section .section-head p { color: #bbc5d1; }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
    .tag { padding: 9px 14px; border: 1px solid rgba(255,255,255,.28); border-radius: 4px; color: #fff; font-size: 14px; }
    .tag:nth-child(4n+1) { background: var(--coral); border-color: var(--coral); }
    .tag:nth-child(4n+2) { background: var(--blue); border-color: var(--blue); }
    .tag:nth-child(4n+3) { background: var(--cyan); border-color: var(--cyan); color: var(--ink); }
    .tag:nth-child(4n) { background: var(--orange); border-color: var(--orange); color: var(--ink); }
    .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .case { overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); transition: transform .25s ease, box-shadow .25s ease; }
    .case-media { aspect-ratio: 16 / 9; overflow: hidden; background: #e9eef7; }
    .case-media img { width: 100%; height: 100%; object-fit: cover; }
    .case-body { padding: 20px; }
    .case-body h3 { margin-bottom: 8px; }
    .case-body p { color: var(--muted); font-size: 14px; margin-bottom: 0; }
    .compare-section { background: #fff0ed; }
    .rating-box { display: flex; align-items: center; gap: 24px; margin-bottom: 28px; }
    .rating-score { padding: 16px 24px; background: var(--coral); color: #fff; border-radius: 8px; }
    .rating-score strong { display: block; font-size: 40px; line-height: 1; }
    .stars { color: #f49b16; font-size: 25px; letter-spacing: 0; }
    .table-wrap { overflow-x: auto; background: #fff; border: 1px solid #f1d8d2; border-radius: 10px; }
    table { width: 100%; min-width: 720px; border-collapse: collapse; }
    th, td { padding: 15px 16px; text-align: left; border-bottom: 1px solid #f0e3df; font-size: 14px; }
    th { background: var(--ink); color: #fff; }
    td:first-child { font-weight: 700; }
    .highlight { color: var(--coral); font-weight: 800; }
    .pricing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: stretch; }
    .pricing-card { padding: 30px; background: var(--blue); color: #fff; border-radius: 14px; }
    .pricing-card h3 { color: var(--yellow); font-size: 26px; }
    .pricing-card p { color: #e2e8ff; }
    .price-line { display: flex; justify-content: space-between; gap: 20px; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.2); }
    .price-line strong { color: var(--yellow); }
    .match-form, .contact-form { display: grid; gap: 16px; }
    .form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
    label { display: grid; gap: 7px; color: #39434e; font-size: 14px; font-weight: 700; }
    input, select, textarea { width: 100%; padding: 12px 13px; border: 1px solid #d9dfe7; border-radius: 7px; color: var(--ink); background: #fff; outline: none; }
    input:focus, select:focus, textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(36,89,245,.1); }
    textarea { min-height: 120px; resize: vertical; }
    .form-panel { padding: 30px; background: #fff; border: 1px solid var(--line); border-radius: 14px; }
    .faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; }
    details { background: #fff; border-bottom: 1px solid var(--line); }
    summary { padding: 17px 0; cursor: pointer; font-weight: 700; list-style: none; display: flex; justify-content: space-between; gap: 18px; }
    summary:after { content: "+"; color: var(--coral); font-size: 22px; line-height: 1; }
    details[open] summary:after { content: "−"; }
    details p { padding: 0 30px 17px 0; color: var(--muted); font-size: 14px; margin: 0; }
    .reviews { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .review { padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: 10px; transition: transform .25s ease, box-shadow .25s ease; }
    .review p { color: #4e5966; font-size: 14px; }
    .review footer { color: var(--blue); font-size: 13px; font-weight: 800; }
    .knowledge-grid, .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .knowledge, .news-item { padding: 22px; background: #fff; border-top: 4px solid var(--cyan); }
    .knowledge h3, .news-item h3 { font-size: 18px; margin-bottom: 8px; }
    .knowledge p, .news-item p { color: var(--muted); font-size: 14px; margin-bottom: 12px; }
    .text-link { color: var(--blue); font-weight: 800; font-size: 14px; }
    .contact-section { background: linear-gradient(135deg, #fff0ed, #eef3ff); }
    .contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 42px; align-items: start; }
    .contact-info { display: grid; gap: 15px; }
    .contact-item { padding: 18px; background: rgba(255,255,255,.82); border-left: 4px solid var(--coral); }
    .contact-item strong { display: block; margin-bottom: 4px; }
    .qr { width: 130px; margin-top: 8px; }
    .affiliate { padding: 58px 0; background: var(--yellow); }
    .affiliate-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; }
    .affiliate h2 { margin-bottom: 8px; font-size: 34px; }
    .affiliate p { margin: 0; color: #554711; }
    .footer { padding: 36px 0 24px; background: #17202b; color: #d8e0e8; }
    .footer-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 40px; padding-bottom: 28px; }
    .footer h3 { color: #fff; margin-bottom: 10px; }
    .footer p { color: #aab7c4; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 12px 18px; }
    .footer-links a { color: #d8e0e8; font-size: 13px; }
    .footer-links a:hover { color: var(--yellow); }
    .copyright { padding-top: 20px; border-top: 1px solid rgba(255,255,255,.14); color: #9aa8b5; font-size: 12px; }
    .float-actions { position: fixed; right: 18px; bottom: 20px; z-index: 15; display: grid; gap: 8px; }
    .float-actions a { width: 46px; height: 46px; display: grid; place-items: center; background: var(--coral); color: #fff; border-radius: 50%; box-shadow: 0 8px 20px rgba(0,0,0,.16); font-size: 12px; font-weight: 800; }
    .float-actions a:last-child { background: var(--blue); }
    .reveal { opacity: 0; transform: translateY(20px); transition: opacity .65s ease, transform .65s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    @keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: translateY(0); } }
    @media (max-width: 980px) {
      .nav-links { display: none; position: absolute; top: 76px; left: 20px; right: 20px; padding: 12px; background: #fffaf5; border: 1px solid var(--line); box-shadow: var(--shadow); }
      .nav-links.open { display: grid; grid-template-columns: repeat(2, 1fr); }
      .nav-links a { padding: 10px; }
      .nav-cta { margin: 6px 10px; }
      .menu-toggle { display: block; }
      .hero-grid, .about-grid, .contact-grid { grid-template-columns: 1fr; }
      .service-grid, .case-grid, .reviews { grid-template-columns: repeat(2, 1fr); }
      .steps { grid-template-columns: repeat(3, 1fr); row-gap: 18px; }
      .pricing-grid { grid-template-columns: 1fr; }
    }
    @media (max-width: 640px) {
      .container { width: min(var(--container), calc(100% - 28px)); }
      section { padding: 58px 0; }
      .hero { padding: 62px 0 58px; }
      h1 { font-size: 42px; }
      .hero-copy { font-size: 16px; }
      .stats-grid { grid-template-columns: repeat(2, 1fr); }
      .stat { border-right: 0; }
      .about-points, .service-grid, .solution-grid, .case-grid, .reviews, .knowledge-grid, .news-grid, .faq-grid { grid-template-columns: 1fr; }
      .steps { grid-template-columns: 1fr; }
      .step { margin-right: 0; padding-right: 0; border-bottom: 1px solid var(--line); }
      .step:not(:last-child):after { content: "↓"; right: 8px; top: 25px; }
      .form-grid { grid-template-columns: 1fr; }
      .rating-box, .affiliate-inner { align-items: flex-start; flex-direction: column; }
      .footer-grid { grid-template-columns: 1fr; gap: 20px; }
      .hero-panel { box-shadow: 9px 9px 0 var(--yellow); }
    }