:root {
      --ink: #17213a;
      --muted: #68728a;
      --line: #e5e9f3;
      --paper: #ffffff;
      --soft: #f6f8ff;
      --blue: #4169e1;
      --cyan: #14a8b8;
      --orange: #f08a45;
      --pink: #e6578a;
      --green: #3aa981;
      --shadow: 0 18px 48px rgba(52, 73, 125, .1);
      --radius: 16px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: #f6f8ff;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; height: auto; display: block; }
    .container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(255,255,255,.94);
      border-bottom: 1px solid rgba(229,233,243,.9);
      backdrop-filter: blur(14px);
    }
    .nav {
      min-height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }
    .brand { display: inline-flex; align-items: center; flex: 0 0 auto; }
    .brand img { width: 132px; }
    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      flex-wrap: wrap;
      gap: 0;
      margin-left: auto;
    }
    .nav-links a {
      padding: 8px 10px;
      color: #4c5872;
      font-size: 13px;
      transition: color .2s ease, transform .2s ease;
    }
    .nav-links a:hover { color: var(--blue); transform: translateY(-1px); }
    .nav-cta, .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: 0;
      border-radius: 9px;
      padding: 11px 18px;
      background: var(--blue);
      color: #fff;
      font-weight: 700;
      cursor: pointer;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    }
    .nav-cta { margin-left: 10px; font-size: 13px; }
    .button:hover, .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(65,105,225,.24); }
    .button.alt { background: #fff; color: var(--blue); border: 1px solid #b9c8f4; }
    .button.orange { background: var(--orange); }
    .menu-toggle { display: none; border: 0; background: transparent; color: var(--ink); font-size: 24px; cursor: pointer; }
    .hero {
      position: relative;
      overflow: hidden;
      padding: 94px 0 74px;
      background:
        linear-gradient(125deg, rgba(224,233,255,.96), rgba(255,247,239,.98) 48%, rgba(235,250,247,.98));
    }
    .hero:before, .hero:after {
      content: "";
      position: absolute;
      border-radius: 50%;
      pointer-events: none;
      filter: blur(2px);
    }
    .hero:before { width: 360px; height: 360px; right: -120px; top: -150px; background: rgba(240,138,69,.15); }
    .hero:after { width: 260px; height: 260px; left: -110px; bottom: -130px; background: rgba(20,168,184,.13); }
    .hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr .85fr; gap: 58px; align-items: center; }
    .eyebrow, .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--blue);
      font-weight: 800;
      font-size: 13px;
      letter-spacing: .04em;
    }
    .eyebrow:before { content: ""; width: 28px; height: 3px; border-radius: 3px; background: linear-gradient(90deg,var(--blue),var(--pink)); }
    h1, h2, h3 { line-height: 1.2; margin: 0; letter-spacing: 0; }
    h1 { max-width: 650px; margin-top: 16px; font-size: clamp(36px, 5vw, 66px); color: #18213b; }
    .hero-copy { max-width: 650px; margin: 22px 0 30px; color: #536079; font-size: 18px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-note { margin-top: 18px; color: #6b7488; font-size: 13px; }
    .hero-panel { padding: 24px; background: rgba(255,255,255,.76); border: 1px solid rgba(255,255,255,.92); border-radius: 22px; box-shadow: var(--shadow); }
    .hero-panel h3 { font-size: 19px; margin-bottom: 20px; }
    .signal { display: grid; grid-template-columns: repeat(2,1fr); gap: 12px; }
    .signal-item { padding: 16px; border-radius: 13px; background: #fff; border: 1px solid var(--line); }
    .signal-item strong { display: block; font-size: 25px; color: var(--blue); }
    .signal-item span { color: var(--muted); font-size: 13px; }
    .section { padding: 82px 0; }
    .section.white { background: #fff; }
    .section-head { max-width: 720px; margin-bottom: 34px; }
    .section-head h2 { margin-top: 10px; font-size: clamp(28px, 3.4vw, 42px); }
    .section-head p { margin: 14px 0 0; color: var(--muted); }
    .intro-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 44px; align-items: start; }
    .intro-lead { font-size: 23px; font-weight: 800; color: #263458; }
    .intro-text { color: var(--muted); }
    .feature-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
    .feature-card { padding: 24px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); transition: transform .25s ease, box-shadow .25s ease; }
    .feature-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
    .feature-card:nth-child(3n+1) .feature-icon { background: #e8edff; color: var(--blue); }
    .feature-card:nth-child(3n+2) .feature-icon { background: #e5f8f5; color: var(--green); }
    .feature-card:nth-child(3n) .feature-icon { background: #fff0e4; color: var(--orange); }
    .feature-icon { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 12px; font-weight: 800; margin-bottom: 18px; }
    .feature-card h3 { font-size: 19px; margin-bottom: 8px; }
    .feature-card p { margin: 0; color: var(--muted); font-size: 14px; }
    .service-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; }
    .service-item { padding: 19px; background: #fff; border-left: 4px solid var(--cyan); border-radius: 10px; box-shadow: 0 8px 24px rgba(52,73,125,.06); }
    .service-item:nth-child(4n+2) { border-color: var(--pink); }
    .service-item:nth-child(4n+3) { border-color: var(--orange); }
    .service-item:nth-child(4n) { border-color: var(--green); }
    .service-item h3 { font-size: 16px; margin-bottom: 6px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .workflow { display: grid; grid-template-columns: repeat(5,1fr); gap: 14px; counter-reset: flow; }
    .flow-step { position: relative; padding: 24px 18px; background: #fff; border-top: 3px solid var(--blue); border-radius: 12px; box-shadow: 0 8px 24px rgba(52,73,125,.07); }
    .flow-step:before { counter-increment: flow; content: "0" counter(flow); color: var(--blue); font-size: 27px; font-weight: 800; }
    .flow-step h3 { margin: 12px 0 7px; font-size: 17px; }
    .flow-step p { margin: 0; color: var(--muted); font-size: 13px; }
    .industry-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
    .industry-card { padding: 24px; background: linear-gradient(145deg,#fff,#f8faff); border: 1px solid var(--line); border-radius: 15px; }
    .industry-card h3 { font-size: 19px; margin-bottom: 9px; }
    .industry-card p { color: var(--muted); margin: 0; font-size: 14px; }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
    .tag { padding: 7px 13px; border-radius: 999px; background: #fff; color: #4e5b78; border: 1px solid #dce2f1; font-size: 13px; }
    .network { display: grid; grid-template-columns: .9fr 1.1fr; gap: 30px; align-items: stretch; }
    .network-copy, .network-list { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 28px; }
    .network-copy { background: linear-gradient(135deg,#4169e1,#14a8b8); color: #fff; }
    .network-copy p { color: rgba(255,255,255,.86); }
    .network-list { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px; }
    .network-list div { padding: 14px; background: var(--soft); border-radius: 10px; }
    .network-list strong { display: block; color: var(--blue); }
    .network-list span { color: var(--muted); font-size: 13px; }
    .case-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
    .case-card { overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: 14px; transition: transform .25s ease, box-shadow .25s ease; }
    .case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
    .media-wrap { aspect-ratio: 16 / 8.5; overflow: hidden; background: #eaf0ff; }
    .media-wrap img { width: 100%; height: 100%; object-fit: cover; }
    .case-body { padding: 20px; }
    .case-body h3 { font-size: 18px; margin-bottom: 7px; }
    .case-body p { margin: 0; color: var(--muted); font-size: 14px; }
    .comparison-wrap { overflow-x: auto; background: #fff; border: 1px solid var(--line); border-radius: 15px; }
    table { width: 100%; min-width: 760px; border-collapse: collapse; }
    th, td { padding: 17px 18px; text-align: left; border-bottom: 1px solid var(--line); font-size: 14px; }
    th { background: #eef2ff; color: #293762; font-weight: 800; }
    tr:last-child td { border-bottom: 0; }
    td:first-child { color: #44516f; font-weight: 700; }
    .score-panel { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; margin-bottom: 24px; padding: 24px; background: linear-gradient(100deg,#fff5e9,#fff); border: 1px solid #f3d8bd; border-radius: 15px; }
    .score { font-size: 42px; color: var(--orange); font-weight: 900; }
    .stars { color: #f19a35; font-size: 24px; letter-spacing: 2px; }
    .score-panel p { margin: 0; color: var(--muted); }
    .match-layout { display: grid; grid-template-columns: 1fr .9fr; gap: 25px; align-items: start; }
    .match-box { padding: 28px; background: #fff; border: 1px solid var(--line); border-radius: 15px; }
    .match-box h3 { margin-bottom: 12px; }
    .match-box p { color: var(--muted); }
    .price-list { margin: 22px 0 0; padding: 0; list-style: none; }
    .price-list li { display: flex; justify-content: space-between; gap: 12px; padding: 13px 0; border-bottom: 1px dashed #dbe1ef; font-size: 14px; }
    .price-list strong { color: var(--blue); white-space: nowrap; }
    .review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
    .review { padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: 14px; }
    .review p { margin: 0 0 18px; color: #4f5c76; font-size: 14px; }
    .review cite { color: var(--blue); font-size: 13px; font-style: normal; font-weight: 800; }
    .faq-list { display: grid; gap: 10px; max-width: 900px; }
    details { background: #fff; border: 1px solid var(--line); border-radius: 11px; padding: 0 19px; }
    summary { padding: 17px 0; cursor: pointer; font-weight: 700; color: #2b385d; list-style: none; }
    summary::-webkit-details-marker { display: none; }
    summary:after { content: "+"; float: right; color: var(--blue); font-size: 21px; }
    details[open] summary:after { content: "−"; }
    details p { margin: -3px 0 17px; color: var(--muted); font-size: 14px; }
    .articles { display: grid; grid-template-columns: 1.2fr .8fr; gap: 24px; }
    .article-feature { overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: 15px; }
    .article-feature .media-wrap { aspect-ratio: 16 / 7; }
    .article-feature .case-body { padding: 25px; }
    .article-list { display: grid; gap: 10px; }
    .article-list a { padding: 17px 18px; background: #fff; border: 1px solid var(--line); border-radius: 10px; color: #425174; transition: color .2s ease, transform .2s ease; }
    .article-list a:hover { color: var(--blue); transform: translateX(4px); }
    .form-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 28px; align-items: start; }
    .contact-panel { padding: 30px; background: linear-gradient(145deg,#24355f,#4169e1); color: #fff; border-radius: 17px; }
    .contact-panel p { color: rgba(255,255,255,.83); }
    .contact-list { margin-top: 22px; display: grid; gap: 12px; }
    .contact-list div { padding: 11px 0; border-bottom: 1px solid rgba(255,255,255,.2); font-size: 14px; }
    .contact-list strong { display: block; color: #fff; }
    .form-card { padding: 28px; background: #fff; border: 1px solid var(--line); border-radius: 17px; }
    .form-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 15px; }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    label { color: #44516f; font-size: 13px; font-weight: 700; }
    input, select, textarea { width: 100%; padding: 12px 13px; border: 1px solid #d9e0ee; border-radius: 8px; background: #fbfcff; color: var(--ink); font: inherit; outline: none; }
    input:focus, select:focus, textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(65,105,225,.1); }
    textarea { min-height: 125px; resize: vertical; }
    .form-actions { margin-top: 18px; display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
    .form-actions small { color: var(--muted); }
    .qr { width: 120px; margin-top: 18px; border-radius: 8px; }
    .footer { padding: 44px 0 24px; background: #17213a; color: #dce3f3; }
    .footer-grid { display: grid; grid-template-columns: 1.1fr .9fr .9fr; gap: 34px; }
    .footer h3 { color: #fff; font-size: 17px; margin-bottom: 12px; }
    .footer p, .footer a { color: #aebbd4; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 16px; }
    .copyright { margin-top: 30px; padding-top: 17px; border-top: 1px solid rgba(255,255,255,.13); color: #91a0bd; font-size: 12px; }
    .float-tools { position: fixed; right: 18px; bottom: 18px; z-index: 10; display: grid; gap: 8px; }
    .float-tools a { width: 45px; height: 45px; display: grid; place-items: center; border-radius: 50%; background: var(--blue); color: #fff; box-shadow: 0 8px 20px rgba(30,52,117,.22); font-size: 13px; font-weight: 800; }
    .reveal { opacity: 0; transform: translateY(18px); transition: opacity .65s ease, transform .65s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    @media (max-width: 980px) {
      .nav-links { display: none; position: absolute; left: 20px; right: 20px; top: 68px; padding: 12px; background: #fff; border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); }
      .nav-links.open { display: grid; grid-template-columns: repeat(2,1fr); }
      .nav-links a { padding: 10px 12px; }
      .nav-cta { display: none; }
      .menu-toggle { display: block; }
      .hero-grid, .intro-layout, .network, .match-layout, .articles, .form-layout { grid-template-columns: 1fr; }
      .service-grid { grid-template-columns: repeat(2,1fr); }
      .workflow { grid-template-columns: repeat(3,1fr); }
    }
    @media (max-width: 680px) {
      .container { width: min(100% - 28px, 1160px); }
      .hero { padding: 68px 0 56px; }
      .section { padding: 58px 0; }
      .hero-copy { font-size: 16px; }
      .feature-grid, .industry-grid, .case-grid, .review-grid { grid-template-columns: 1fr; }
      .service-grid, .workflow, .network-list, .form-grid, .footer-grid { grid-template-columns: 1fr; }
      .signal { grid-template-columns: 1fr 1fr; }
      .field.full { grid-column: auto; }
      .footer-grid { gap: 20px; }
      h1 { font-size: 39px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *:before, *:after { animation: none !important; transition: none !important; }
    }