:root {
      color-scheme: light;
      --ink: #242a35;
      --muted: #626b78;
      --paper: #fffdf7;
      --white: #ffffff;
      --line: #e8e6dc;
      --coral: #ff705e;
      --yellow: #ffd452;
      --mint: #bcebd8;
      --blue: #9ddcf0;
      --lilac: #d8c8ff;
      --green: #2e795e;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
      line-height: 1.7;
    }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    button, a { -webkit-tap-highlight-color: transparent; }
    img { max-width: 100%; height: auto; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header { position: sticky; z-index: 20; top: 0; background: rgba(255,253,247,.95); border-bottom: 1px solid rgba(36,42,53,.1); backdrop-filter: blur(14px); }
    .nav-row { display: flex; min-height: 76px; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; flex: 0 0 auto; font-weight: 800; font-size: 19px; }
    .brand img { width: 42px; height: 42px; object-fit: contain; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 9px 10px; font-size: 13px; color: #4d5561; transition: color .2s ease; }
    .nav-links a:hover { color: #d94b3e; }
    .nav-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 8px; background: var(--white); color: var(--ink); cursor: pointer; }
    .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 11px 19px; border: 1px solid transparent; border-radius: 7px; background: var(--ink); color: #fff; font-weight: 700; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
    .btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(36,42,53,.14); }
    .btn-primary { background: var(--coral); color: #241f1d; }
    .btn-outline { border-color: #c9c6bb; background: transparent; color: var(--ink); }
    .hero { position: relative; overflow: hidden; padding: 76px 0 54px; background: #fff2b8; }
    .hero::before, .hero::after { position: absolute; z-index: 0; content: ""; border: 1px solid rgba(36,42,53,.15); border-radius: 50%; pointer-events: none; }
    .hero::before { width: 480px; height: 480px; right: -140px; top: -240px; box-shadow: 0 0 0 34px rgba(255,255,255,.2), 0 0 0 68px rgba(255,255,255,.15); }
    .hero::after { width: 190px; height: 190px; right: 12%; bottom: -135px; background: var(--mint); }
    .hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0,1.4fr) minmax(240px,.6fr); align-items: center; gap: 46px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: #5a5141; font-size: 13px; font-weight: 800; }
    .eyebrow::before { width: 24px; height: 3px; background: var(--coral); content: ""; }
    h1, h2, h3, p { margin-top: 0; }
    h1 { max-width: 690px; margin: 17px 0 18px; font-size: clamp(38px, 5vw, 62px); line-height: 1.12; }
    .hero-copy { max-width: 650px; color: #4d4d49; font-size: 17px; }
    .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 27px 0 25px; }
    .hero-tags { display: flex; flex-wrap: wrap; gap: 9px; }
    .hero-tags span { padding: 6px 11px; border: 1px solid rgba(36,42,53,.18); border-radius: 4px; font-size: 12px; font-weight: 700; }
    .hero-mark { position: relative; display: grid; min-height: 250px; place-items: center; }
    .hero-mark .orbit { display: grid; width: 220px; aspect-ratio: 1; place-items: center; border: 1px solid rgba(36,42,53,.35); border-radius: 50%; animation: slow-turn 24s linear infinite; }
    .hero-mark .orbit::before { width: 152px; aspect-ratio: 1; border: 1px dashed rgba(36,42,53,.32); border-radius: 50%; content: ""; }
    .hero-mark .core { position: absolute; display: grid; width: 104px; aspect-ratio: 1; place-items: center; border-radius: 29px; background: var(--coral); box-shadow: 9px 9px 0 rgba(36,42,53,.12); font-size: 25px; font-weight: 900; transform: rotate(-8deg); }
    .hero-mark .node { position: absolute; display: grid; width: 54px; aspect-ratio: 1; place-items: center; border: 1px solid var(--ink); border-radius: 15px; background: var(--white); font-size: 12px; font-weight: 800; }
    .hero-mark .node-one { top: 16px; left: calc(50% - 25px); }
    .hero-mark .node-two { right: 1px; top: 105px; background: var(--mint); }
    .hero-mark .node-three { bottom: 8px; left: calc(50% - 26px); background: var(--lilac); }
    .hero-mark .node-four { top: 105px; left: 1px; background: var(--blue); }
    @keyframes slow-turn { to { transform: rotate(360deg); } }
    .metric-strip { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(4,1fr); margin-top: 39px; border: 1px solid rgba(36,42,53,.15); background: rgba(255,255,255,.72); }
    .metric { padding: 17px 20px; border-right: 1px solid rgba(36,42,53,.12); }
    .metric:last-child { border-right: 0; }
    .metric strong { display: block; font-size: 17px; }
    .metric span { color: var(--muted); font-size: 12px; }
    section { padding: 76px 0; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 25px; margin-bottom: 30px; }
    .section-head h2 { margin: 8px 0 0; font-size: clamp(27px, 3vw, 38px); line-height: 1.25; }
    .section-head p { max-width: 510px; margin: 0; color: var(--muted); }
    .section-label { color: #b74c3f; font-size: 12px; font-weight: 900; letter-spacing: 0; text-transform: uppercase; }
    .intro-band { background: #eff9f3; }
    .intro-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: start; }
    .intro-grid h2 { max-width: 540px; font-size: 35px; line-height: 1.3; }
    .intro-grid p { color: #535d59; }
    .capability-list { display: grid; grid-template-columns: repeat(2,1fr); gap: 0 20px; margin: 0; padding: 0; list-style: none; }
    .capability-list li { padding: 14px 0; border-bottom: 1px solid #cfe2d7; font-weight: 700; }
    .capability-list li::before { margin-right: 9px; color: #32805e; content: "＋"; }
    .service-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 15px; }
    .service-item { padding: 21px; border: 1px solid var(--line); background: var(--white); transition: transform .2s ease, box-shadow .2s ease; }
    .service-item:hover { transform: translateY(-4px); box-shadow: 0 12px 26px rgba(36,42,53,.08); }
    .service-item:nth-child(4n+1) { border-top: 4px solid var(--coral); }
    .service-item:nth-child(4n+2) { border-top: 4px solid #71cba4; }
    .service-item:nth-child(4n+3) { border-top: 4px solid #78cde2; }
    .service-item:nth-child(4n) { border-top: 4px solid #c2a6ff; }
    .service-item h3 { margin-bottom: 7px; font-size: 17px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-item .mini-tag { display: inline-block; margin-top: 13px; color: #a44c40; font-size: 11px; font-weight: 800; }
    .production { background: #f1f5ff; }
    .production-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 12px; }
    .production-step { padding: 20px 17px; border-bottom: 2px solid #899ed7; background: rgba(255,255,255,.82); }
    .production-step b { display: block; margin-bottom: 7px; font-size: 15px; }
    .production-step p { margin: 0; color: var(--muted); font-size: 13px; }
    .production-note { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 22px; padding: 19px 22px; background: #dce6ff; }
    .production-note p { margin: 0; }
    .solutions-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
    .solution { padding: 22px; border-left: 3px solid var(--yellow); background: #fff8db; }
    .solution:nth-child(2) { border-color: #72c9a4; background: #e8f8ef; }
    .solution:nth-child(3) { border-color: #85cbe0; background: #e8f7fb; }
    .solution h3 { margin-bottom: 8px; font-size: 18px; }
    .solution p { margin: 0; color: #59616a; font-size: 14px; }
    .network { background: #fff1ec; }
    .network-row { display: flex; align-items: center; justify-content: space-between; gap: 25px; padding: 24px 0; border-top: 1px solid #e7cfc7; }
    .network-row:last-child { border-bottom: 1px solid #e7cfc7; }
    .network-row h3 { min-width: 160px; margin: 0; font-size: 17px; }
    .network-row p { max-width: 680px; margin: 0; color: #59616a; }
    .model-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
    .model-cloud span { padding: 6px 10px; border: 1px solid #d9d7d0; border-radius: 3px; background: #fff; font-size: 12px; font-weight: 700; }
    .timeline { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; border-top: 1px solid #d7d4c9; }
    .timeline article { position: relative; padding: 23px 20px 0 0; }
    .timeline article::before { position: absolute; top: -6px; left: 0; width: 11px; height: 11px; border: 2px solid var(--paper); border-radius: 50%; background: var(--coral); box-shadow: 0 0 0 1px var(--coral); content: ""; }
    .timeline h3 { margin: 0 0 7px; font-size: 16px; }
    .timeline p { margin: 0; color: var(--muted); font-size: 13px; }
    .case-section { background: #f7f6f0; }
    .case-feature { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: center; }
    .case-photo { overflow: hidden; background: #e9e6dc; }
    .case-photo img { display: block; width: 100%; aspect-ratio: 16/9; object-fit: cover; }
    .case-copy h3 { font-size: 25px; }
    .case-copy p { color: var(--muted); }
    .case-thumbs { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; margin-top: 18px; }
    .case-thumbs img { display: block; width: 100%; aspect-ratio: 4/3; object-fit: cover; background: #ece9df; }
    .review-score { display: flex; align-items: center; gap: 20px; margin-bottom: 25px; padding: 22px; background: #fff2b8; }
    .review-score strong { font-size: 38px; line-height: 1; }
    .stars { color: #ab7010; font-size: 20px; letter-spacing: 0; }
    .review-score span { color: #5b5646; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    table { width: 100%; border-collapse: collapse; min-width: 680px; }
    th, td { padding: 14px 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
    th { background: #f2f7f3; font-size: 13px; }
    td { color: #515965; font-size: 13px; }
    td:first-child { color: var(--ink); font-weight: 800; }
    .positive { color: #267653; font-weight: 800; }
    .match { display: grid; grid-template-columns: .85fr 1.15fr; gap: 40px; align-items: start; }
    .match-aside { padding: 24px; background: #e7f5ee; }
    .match-aside h3 { font-size: 22px; }
    .match-aside p { color: #56615c; }
    .match-aside .btn { margin-top: 8px; }
    .price-box { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: center; padding: 28px; border: 1px solid #eadfc1; background: #fff9e7; }
    .price-box h3 { margin-bottom: 8px; font-size: 22px; }
    .price-box p { margin: 0; color: #59616a; }
    .price-callout { padding: 17px; border-left: 3px solid #e3ad28; background: white; color: #535b62; font-size: 13px; }
    .article-list { display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); gap: 12px; }
    .article-list a { display: flex; min-height: 95px; align-items: end; padding: 15px; border: 1px solid var(--line); background: var(--white); font-weight: 700; transition: background .2s ease, transform .2s ease; }
    .article-list a:hover { transform: translateY(-3px); background: #fff2b8; }
    .article-list a span { color: #ba5143; font-size: 12px; }
    .knowledge { background: #eef8fa; }
    .knowledge-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 30px; }
    .knowledge-item { padding: 17px 0; border-bottom: 1px solid #cee0e3; }
    .knowledge-item h3 { margin-bottom: 5px; font-size: 16px; }
    .knowledge-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 22px; }
    details { border-bottom: 1px solid var(--line); }
    summary { position: relative; padding: 16px 32px 16px 0; cursor: pointer; font-weight: 800; list-style: none; }
    summary::-webkit-details-marker { display: none; }
    summary::after { position: absolute; top: 14px; right: 2px; color: #c64e40; content: "+"; font-size: 22px; line-height: 1; transition: transform .2s ease; }
    details[open] summary::after { transform: rotate(45deg); }
    details p { margin: 0 0 16px; color: var(--muted); font-size: 14px; }
    .testimonials { background: #f9efff; }
    .quote-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 14px; }
    .quote { padding: 20px; border-top: 3px solid #b799ee; background: white; }
    .quote blockquote { margin: 0 0 17px; color: #414852; font-size: 14px; }
    .quote cite { color: #6b6474; font-size: 12px; font-style: normal; font-weight: 800; }
    .contact { background: #dff4ea; }
    .contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 42px; align-items: start; }
    .contact-details { display: grid; gap: 13px; margin-top: 24px; }
    .contact-details p { margin: 0; color: #475650; }
    .contact-details a { color: #1f654b; font-weight: 800; }
    .qr-wrap { width: 146px; padding: 8px; background: #fff; }
    .qr-wrap img { display: block; width: 100%; }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .field { display: grid; gap: 6px; }
    .field-wide { grid-column: 1 / -1; }
    .field label { font-size: 13px; font-weight: 800; }
    .field input, .field select, .field textarea { width: 100%; min-height: 46px; padding: 10px 12px; border: 1px solid #b8d2c5; border-radius: 4px; outline: none; background: #fff; color: var(--ink); }
    .field textarea { min-height: 116px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: #398361; box-shadow: 0 0 0 3px rgba(57,131,97,.12); }
    .form-note { color: #5b6b63; font-size: 12px; }
    .join-band { padding: 32px; background: #ffd8cf; }
    .join-band-inner { display: flex; align-items: center; justify-content: space-between; gap: 25px; }
    .join-band h2 { margin: 0 0 4px; font-size: 25px; }
    .join-band p { margin: 0; color: #5c514f; }
    .links-row { display: flex; flex-wrap: wrap; gap: 10px 20px; padding: 24px 0; border-bottom: 1px solid rgba(36,42,53,.12); }
    .links-row a { color: #45515a; font-size: 13px; }
    .site-footer { background: #fffdf7; color: #343a43; }
    .footer-main { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 22px 0; }
    .footer-main p { margin: 0; color: #626b78; font-size: 13px; }
    .footer-meta { color: #626b78; font-size: 12px; }
    .float-contact { position: fixed; z-index: 15; right: 18px; bottom: 20px; display: grid; gap: 8px; }
    .float-contact a { display: grid; width: 48px; height: 48px; place-items: center; border: 1px solid rgba(36,42,53,.15); border-radius: 50%; background: #fff; box-shadow: 0 4px 14px rgba(36,42,53,.12); color: var(--ink); font-size: 12px; font-weight: 800; }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }
    @media (max-width: 1020px) {
      .nav-row { flex-wrap: wrap; padding: 12px 0; }
      .menu-toggle { display: inline-grid; place-items: center; }
      .nav-actions .btn { display: none; }
      .nav-links { display: none; width: 100%; justify-content: flex-start; padding: 7px 0 2px; }
      .nav-links.is-open { display: flex; }
      .nav-links a { padding: 9px 12px 9px 0; }
      .hero-inner { grid-template-columns: minmax(0,1.3fr) minmax(200px,.7fr); gap: 22px; }
      .service-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
      .article-list { grid-template-columns: repeat(3,minmax(0,1fr)); }
    }
    @media (max-width: 700px) {
      .container { width: min(var(--container), calc(100% - 30px)); }
      .nav-row { min-height: 66px; gap: 12px; }
      .brand { font-size: 17px; }
      .hero { padding: 54px 0 30px; }
      .hero-inner { grid-template-columns: 1fr; }
      h1 { font-size: 42px; }
      .hero-copy { font-size: 15px; }
      .hero-mark { min-height: 210px; }
      .hero-mark .orbit { width: 185px; }
      .metric-strip { grid-template-columns: 1fr 1fr; margin-top: 24px; }
      .metric { border-bottom: 1px solid rgba(36,42,53,.12); }
      .metric:nth-child(2) { border-right: 0; }
      .metric:nth-child(n+3) { border-bottom: 0; }
      section { padding: 55px 0; }
      .section-head { display: block; }
      .section-head p { margin-top: 12px; }
      .intro-grid, .case-feature, .match, .contact-grid { grid-template-columns: 1fr; gap: 24px; }
      .intro-grid h2 { font-size: 29px; }
      .service-grid, .solutions-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
      .service-item { padding: 16px; }
      .production-grid { grid-template-columns: 1fr 1fr; }
      .production-note, .network-row, .join-band-inner, .footer-main { align-items: flex-start; flex-direction: column; }
      .network-row { gap: 8px; }
      .timeline { grid-template-columns: 1fr 1fr; row-gap: 22px; }
      .timeline article { padding-right: 12px; }
      .case-thumbs { gap: 8px; }
      .review-score { flex-wrap: wrap; gap: 9px 16px; }
      .price-box { grid-template-columns: 1fr; padding: 21px; }
      .article-list { grid-template-columns: 1fr 1fr; }
      .knowledge-grid, .faq-list, .quote-grid { grid-template-columns: 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .field-wide { grid-column: auto; }
      .join-band { padding: 24px 20px; }
      .float-contact { right: 10px; bottom: 12px; }
      .float-contact a { width: 43px; height: 43px; }
    }
    @media (max-width: 390px) {
      .service-grid, .solutions-grid { grid-template-columns: 1fr; }
      .hero-actions .btn { width: 100%; }
    }