:root {
      color-scheme: light;
      --ink: #20232b;
      --muted: #646a76;
      --paper: #fffaf5;
      --white: #ffffff;
      --line: #e8e2dd;
      --coral: #f05245;
      --orange: #ff8b39;
      --blue: #315de8;
      --teal: #147d78;
      --lime: #c9ed65;
      --container: 1160px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 88px; }
    body {
      margin: 0;
      color: var(--ink);
      background:
        radial-gradient(ellipse at 85% 3%, rgba(255, 193, 104, .18), transparent 28rem),
        linear-gradient(180deg, #fffaf5 0%, #fff 34%, #f9fbf7 74%, #fffaf5 100%);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", 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; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      z-index: 20;
      top: 0;
      border-bottom: 1px solid rgba(32, 35, 43, .08);
      background: rgba(255, 250, 245, .94);
      backdrop-filter: blur(14px);
    }
    .nav-row { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; flex: 0 0 auto; }
    .ai-page-logo { display: block; width: 142px; max-width: 100%; height: auto; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; }
    .nav-links a {
      padding: 10px 9px;
      color: #4d515b;
      font-size: 13px;
      transition: color .2s ease;
    }
    .nav-links a:hover { color: var(--coral); }
    .nav-actions { display: flex; align-items: center; gap: 9px; flex: 0 0 auto; }
    .nav-actions .button { padding: 10px 15px; font-size: 13px; }
    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid var(--line);
      border-radius: 4px;
      background: var(--white);
      color: var(--ink);
      cursor: pointer;
    }
    .button {
      min-height: 46px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      padding: 12px 20px;
      border: 1px solid transparent;
      border-radius: 4px;
      background: var(--coral);
      color: #fff;
      font-weight: 700;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
      cursor: pointer;
    }
    .button:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(240, 82, 69, .22); background: #d94136; }
    .button-secondary { background: var(--ink); }
    .button-secondary:hover { background: #343946; box-shadow: 0 8px 20px rgba(32, 35, 43, .17); }
    .button-outline { border-color: rgba(32, 35, 43, .25); background: transparent; color: var(--ink); }
    .button-outline:hover { background: #fff; box-shadow: 0 7px 18px rgba(32, 35, 43, .08); }
    .hero { padding: 68px 0 44px; overflow: hidden; }
    .hero-inner { position: relative; }
    .hero-copy { max-width: 780px; position: relative; z-index: 1; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: #a54626; font-weight: 800; font-size: 13px; }
    .eyebrow::before { content: ""; width: 24px; height: 3px; background: var(--coral); }
    h1 { max-width: 720px; margin: 16px 0 18px; font-size: clamp(42px, 6vw, 72px); line-height: 1.08; font-weight: 850; }
    .hero-lead { max-width: 680px; margin: 0; color: #515762; font-size: 18px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 27px; }
    .hero-note { margin: 14px 0 0; color: var(--muted); font-size: 13px; }
    .hero-art {
      position: absolute;
      z-index: 0;
      top: 5px;
      right: 8px;
      width: min(34vw, 390px);
      aspect-ratio: 1;
      border: 1px solid rgba(240, 82, 69, .2);
      border-radius: 50%;
      background: conic-gradient(from 230deg, #ffdf63, #ff8b39, #f05245, #e34c9c, #315de8, #43c6b1, #ffdf63);
      opacity: .88;
      animation: orbit 24s linear infinite;
    }
    .hero-art::before, .hero-art::after {
      content: "";
      position: absolute;
      inset: 17%;
      border: 1px solid rgba(255, 255, 255, .72);
      border-radius: 50%;
    }
    .hero-art::after { inset: 34%; background: #fffaf5; border: 0; }
    .hero-stamp {
      position: absolute;
      right: 8%;
      bottom: 18%;
      z-index: 2;
      display: grid;
      place-items: center;
      width: 100px;
      aspect-ratio: 1;
      border-radius: 50%;
      background: var(--lime);
      color: #252b23;
      font-weight: 850;
      text-align: center;
      line-height: 1.3;
      transform: rotate(10deg);
    }
    .metric-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 50px; border-block: 1px solid var(--line); }
    .metric { padding: 19px 20px 19px 0; }
    .metric + .metric { padding-left: 20px; border-left: 1px solid var(--line); }
    .metric strong { display: block; font-size: 22px; line-height: 1.3; }
    .metric span { color: var(--muted); font-size: 13px; }
    .section { padding: 76px 0; }
    .section-tint { background: linear-gradient(110deg, rgba(255, 235, 220, .7), rgba(244, 250, 238, .76)); }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
    .section-head > div { max-width: 730px; }
    .section-kicker { margin: 0 0 6px; color: #bc4a35; font-weight: 800; font-size: 12px; text-transform: uppercase; }
    h2 { margin: 0; font-size: clamp(29px, 4vw, 42px); line-height: 1.2; }
    .section-intro { margin: 10px 0 0; color: var(--muted); }
    .text-link { color: #c74634; font-weight: 750; white-space: nowrap; }
    .text-link:hover { text-decoration: underline; }
    .about-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 54px; align-items: start; }
    .about-copy p { margin: 0 0 15px; color: #555b66; }
    .about-copy strong { color: var(--ink); }
    .capability-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 22px; padding: 0; margin: 18px 0 0; list-style: none; }
    .capability-list li { padding: 12px 0; border-bottom: 1px solid var(--line); font-weight: 650; }
    .capability-list li::before { content: "＋"; margin-right: 8px; color: var(--coral); font-weight: 800; }
    .platform-strip { padding: 21px 24px; border-left: 4px solid var(--blue); background: #f0f4ff; }
    .platform-strip strong { display: block; margin-bottom: 6px; }
    .platform-strip p { margin: 0; color: #555b66; font-size: 14px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 24px; border-top: 1px solid var(--line); }
    .service-item { padding: 24px 10px 22px 0; border-bottom: 1px solid var(--line); transition: transform .2s ease; }
    .service-item:hover { transform: translateY(-3px); }
    .service-number { display: inline-block; margin-bottom: 10px; color: var(--coral); font-size: 12px; font-weight: 850; }
    .service-item h3 { margin: 0 0 7px; font-size: 19px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .service-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 13px; }
    .tag { padding: 4px 9px; border: 1px solid #e4d8d0; border-radius: 3px; color: #555b66; background: rgba(255,255,255,.72); font-size: 12px; }
    .production-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 42px; align-items: start; }
    .production-aside { padding: 25px; background: var(--ink); color: #fff; }
    .production-aside h3 { margin: 0 0 10px; font-size: 23px; }
    .production-aside p { margin: 0 0 17px; color: #e2e4e8; }
    .production-aside .button { background: var(--lime); color: #22291c; }
    .production-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 24px; }
    .production-item { padding: 0 0 20px; }
    .production-item h3 { margin: 0 0 5px; font-size: 17px; }
    .production-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .industry-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: #e7e5df; border: 1px solid #e7e5df; }
    .industry { min-height: 140px; padding: 20px; background: #fff; }
    .industry h3 { margin: 0 0 8px; font-size: 17px; }
    .industry p { margin: 0; color: var(--muted); font-size: 13px; }
    .network-row { display: flex; flex-wrap: wrap; gap: 9px; }
    .network-row span { padding: 9px 13px; border: 1px solid #d9e5e1; border-radius: 3px; background: #fff; color: #355954; font-size: 13px; }
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; }
    .step { position: relative; padding: 20px 0 0; border-top: 2px solid var(--coral); counter-increment: step; }
    .step::before { content: "0" counter(step); color: var(--coral); font-size: 13px; font-weight: 850; }
    .step h3 { margin: 9px 0 5px; font-size: 18px; }
    .step p { margin: 0; color: var(--muted); font-size: 14px; }
    .case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
    .case { overflow: hidden; background: #fff; border: 1px solid var(--line); }
    .image-wrap { padding: 10px; background: #f3efea; }
    .ai-page-image { display: block; width: 100%; max-width: 100%; height: auto; object-fit: contain; }
    .case-copy { padding: 18px 20px 20px; }
    .case-copy h3 { margin: 0 0 6px; font-size: 19px; }
    .case-copy p { margin: 0; color: var(--muted); font-size: 14px; }
    .review-summary { display: flex; align-items: center; gap: 20px; margin-bottom: 24px; padding: 21px 24px; background: var(--ink); color: #fff; }
    .review-score { font-size: 38px; line-height: 1; font-weight: 850; }
    .review-score small { font-size: 14px; font-weight: 500; }
    .stars { color: #ffcf47; letter-spacing: 0; font-size: 20px; }
    .review-summary p { margin: 0; color: #e2e4e8; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    table { width: 100%; border-collapse: collapse; min-width: 720px; }
    th, td { padding: 14px 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
    th { background: #f4f6f2; font-size: 14px; }
    td { color: #555b66; font-size: 14px; }
    tbody tr:last-child td { border-bottom: 0; }
    td:first-child { width: 22%; color: var(--ink); font-weight: 700; }
    .score-cell { color: #b34030; font-weight: 800; }
    .testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .quote { padding: 18px 0; border-top: 2px solid #d8e8de; }
    .quote p { margin: 0 0 15px; color: #404650; }
    .quote footer { color: var(--muted); font-size: 13px; }
    .match-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 45px; align-items: start; }
    .match-copy { padding-top: 7px; }
    .match-copy p { color: var(--muted); }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field-full { grid-column: 1 / -1; }
    .field label { font-size: 13px; font-weight: 750; }
    .field input, .field select, .field textarea {
      width: 100%;
      min-height: 45px;
      padding: 10px 12px;
      border: 1px solid #dcd9d4;
      border-radius: 3px;
      outline: none;
      background: #fff;
      color: var(--ink);
    }
    .field textarea { min-height: 112px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(49, 93, 232, .1); }
    .form-submit { margin-top: 15px; }
    .token-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 35px; align-items: start; }
    .token-copy p { color: var(--muted); }
    .token-note { padding: 20px; border-left: 4px solid var(--orange); background: #fff3e9; }
    .token-note p { margin: 0; color: #574536; font-size: 14px; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { position: relative; padding: 17px 34px 17px 0; cursor: pointer; font-weight: 750; list-style: none; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; position: absolute; right: 3px; top: 13px; color: var(--coral); font-size: 22px; transition: transform .2s ease; }
    .faq-item[open] summary::after { transform: rotate(45deg); }
    .faq-item p { max-width: 850px; margin: 0; padding: 0 25px 17px 0; color: var(--muted); }
    .knowledge-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
    .knowledge-block { padding-top: 17px; border-top: 2px solid var(--blue); }
    .knowledge-block h3 { margin: 0 0 8px; font-size: 21px; }
    .knowledge-block p { margin: 0; color: var(--muted); }
    .article-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-top: 22px; }
    .article-link { display: flex; min-height: 82px; align-items: center; justify-content: space-between; gap: 10px; padding: 13px; border: 1px solid var(--line); background: #fff; font-size: 13px; font-weight: 700; transition: border-color .2s ease, transform .2s ease; }
    .article-link:hover { border-color: var(--coral); transform: translateY(-2px); }
    .article-link span:last-child { color: var(--coral); }
    .join-band { display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: 28px 30px; background: #e9f4d2; }
    .join-band h2 { font-size: 25px; }
    .join-band p { margin: 6px 0 0; color: #555d48; }
    .contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; }
    .contact-details { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .contact-detail { padding: 15px 0; border-top: 1px solid var(--line); }
    .contact-detail strong { display: block; margin-bottom: 3px; font-size: 13px; }
    .contact-detail span, .contact-detail a { color: var(--muted); font-size: 14px; overflow-wrap: anywhere; }
    .qr-wrap { width: 150px; padding: 8px; border: 1px solid var(--line); background: #fff; }
    .qr-wrap img { display: block; width: 100%; height: auto; }
    .friend-links { display: flex; flex-wrap: wrap; gap: 8px 18px; padding: 20px 0; border-top: 1px solid var(--line); }
    .friend-links a { color: #4e5760; font-size: 13px; }
    .friend-links a:hover { color: var(--coral); }
    .site-footer { padding: 17px 0 24px; border-top: 1px solid var(--line); background: #fffaf5; color: #333943; }
    .footer-row { display: flex; align-items: center; justify-content: space-between; gap: 15px; font-size: 12px; }
    .footer-row p { margin: 0; }
    .back-top {
      position: fixed;
      right: 18px;
      bottom: 20px;
      z-index: 15;
      width: 44px;
      height: 44px;
      border: 0;
      border-radius: 3px;
      background: var(--blue);
      color: #fff;
      font-size: 19px;
      cursor: pointer;
      box-shadow: 0 6px 18px rgba(49, 93, 232, .22);
      opacity: 0;
      visibility: hidden;
      transform: translateY(8px);
      transition: .2s ease;
    }
    .back-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @keyframes orbit { to { transform: rotate(360deg); } }
    @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: 980px) {
      .nav-links a { padding-inline: 6px; font-size: 12px; }
      .nav-row { gap: 12px; }
      .nav-actions .button-secondary { display: none; }
      .hero-art { right: -35px; opacity: .48; }
      .industry-grid { grid-template-columns: repeat(2, 1fr); }
      .article-list { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 760px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .nav-row { min-height: 66px; }
      .ai-page-logo { width: 124px; }
      .menu-toggle { display: inline-grid; place-items: center; }
      .nav-links {
        display: none;
        position: absolute;
        top: 65px;
        left: 0;
        right: 0;
        padding: 10px 16px 16px;
        border-bottom: 1px solid var(--line);
        background: #fffaf5;
        box-shadow: 0 14px 20px rgba(32, 35, 43, .08);
      }
      .nav-links.open { display: grid; grid-template-columns: repeat(2, 1fr); }
      .nav-links a { padding: 10px 8px; font-size: 14px; }
      .nav-actions { margin-left: auto; }
      .nav-actions .button { min-height: 40px; padding: 8px 11px; }
      .hero { padding-top: 54px; }
      .hero-art { top: 30px; right: -120px; width: 270px; opacity: .24; }
      h1 { max-width: 580px; font-size: 45px; }
      .hero-lead { font-size: 16px; }
      .metric-band { grid-template-columns: 1fr 1fr; margin-top: 38px; }
      .metric { padding: 14px 10px 14px 0; }
      .metric + .metric { padding-left: 12px; }
      .metric:nth-child(3) { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
      .metric:nth-child(4) { border-top: 1px solid var(--line); }
      .section { padding: 58px 0; }
      .section-head { align-items: start; flex-direction: column; gap: 12px; margin-bottom: 23px; }
      .about-grid, .production-layout, .match-layout, .token-layout, .contact-grid { grid-template-columns: 1fr; gap: 26px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); gap: 0 18px; }
      .steps { grid-template-columns: repeat(2, 1fr); gap: 24px 18px; }
      .testimonial-grid { grid-template-columns: repeat(2, 1fr); gap: 16px 22px; }
      .case-grid { gap: 16px; }
      .join-band { align-items: flex-start; flex-direction: column; }
      .footer-row { align-items: flex-start; flex-direction: column; }
    }
    @media (max-width: 520px) {
      .nav-actions .button { font-size: 12px; }
      h1 { font-size: 40px; }
      .hero-stamp { width: 78px; font-size: 12px; }
      .metric strong { font-size: 19px; }
      .service-grid, .production-grid, .industry-grid, .case-grid, .testimonial-grid, .knowledge-grid, .form-grid, .contact-details { grid-template-columns: 1fr; }
      .field-full { grid-column: auto; }
      .case .image-wrap { padding: 7px; }
      .article-list { grid-template-columns: 1fr 1fr; }
      .review-summary { align-items: flex-start; flex-direction: column; gap: 10px; }
      .steps { grid-template-columns: 1fr 1fr; }
      .qr-wrap { width: 136px; }
      .friend-links { gap: 9px 14px; }
    }