:root {
      color-scheme: light;
      --ink: #15343a;
      --muted: #597176;
      --paper: #f5fbfa;
      --white: #fff;
      --line: #d9e9e6;
      --teal: #087f78;
      --teal-dark: #075c59;
      --mint: #d7f4eb;
      --lime: #d6f16e;
      --coral: #e97558;
      --shadow: 0 14px 36px rgba(22, 75, 75, .09);
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: Inter, "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
      line-height: 1.65;
    }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    button, a { -webkit-tap-highlight-color: transparent; }
    img { display: block; max-width: 100%; height: auto; }
    .container { width: min(1160px, calc(100% - 40px)); margin-inline: auto; }
    .site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid rgba(217,233,230,.85); background: rgba(245,251,250,.94); backdrop-filter: blur(14px); }
    .nav-row { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; flex: 0 0 auto; }
    .ai-page-logo { width: 142px; max-height: 46px; object-fit: contain; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; }
    .nav-links a { padding: 10px 13px; color: #35565b; font-size: 14px; white-space: nowrap; border-radius: 5px; transition: background .2s, color .2s; }
    .nav-links a:hover { background: #e5f3ef; color: var(--teal-dark); }
    .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: 5px; background: var(--white); color: var(--ink); cursor: pointer; }
    .button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 11px 19px; border: 1px solid transparent; border-radius: 5px; background: var(--teal); color: #fff; font-weight: 700; transition: transform .2s, background .2s, box-shadow .2s; cursor: pointer; }
    .button:hover { transform: translateY(-2px); background: var(--teal-dark); box-shadow: 0 8px 20px rgba(8,127,120,.2); }
    .button.secondary { color: var(--teal-dark); background: #fff; border-color: #a8d2c9; }
    .button.secondary:hover { background: #eaf7f3; }
    .button.lime { background: var(--lime); color: #173b36; }
    .button.lime:hover { background: #c8e65d; }
    .hero { position: relative; overflow: hidden; padding: 76px 0 48px; background: linear-gradient(115deg, #e4f7f1 0%, #f5fbfa 53%, #e8f4f5 100%); }
    .hero::before, .hero::after { content: ""; position: absolute; border: 1px solid rgba(8,127,120,.12); border-radius: 50%; pointer-events: none; }
    .hero::before { width: 490px; height: 490px; right: -110px; top: -250px; box-shadow: 0 0 0 35px rgba(8,127,120,.025), 0 0 0 75px rgba(8,127,120,.02); }
    .hero::after { width: 300px; height: 300px; right: 16%; bottom: -250px; }
    .hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0,1.3fr) minmax(260px,.7fr); align-items: center; gap: 48px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--teal-dark); font-weight: 750; font-size: 13px; letter-spacing: 0; }
    .eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--coral); }
    h1, h2, h3, p { margin-top: 0; }
    h1 { max-width: 690px; margin: 16px 0 18px; font-size: clamp(40px, 5vw, 62px); line-height: 1.13; letter-spacing: 0; }
    .hero-copy { max-width: 660px; margin-bottom: 25px; color: #49666a; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-note { margin: 19px 0 0; color: #627a7d; font-size: 13px; }
    .hero-console { position: relative; padding: 23px; border: 1px solid #b9ddd4; border-radius: 8px; background: rgba(255,255,255,.78); box-shadow: var(--shadow); animation: rise .7s ease both; }
    .console-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
    .console-head strong { font-size: 15px; }
    .live-mark { display: inline-flex; align-items: center; gap: 7px; color: var(--teal-dark); font-size: 12px; }
    .live-mark::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #23a879; box-shadow: 0 0 0 4px #e1f5ec; }
    .console-models { display: flex; flex-wrap: wrap; gap: 8px; padding: 18px 0; }
    .model-chip { padding: 6px 10px; border: 1px solid #d3e9e4; border-radius: 4px; background: #f6fbf9; color: #315b5b; font-size: 12px; }
    .console-flow { display: grid; grid-template-columns: repeat(3,1fr); gap: 9px; }
    .flow-cell { padding: 12px 10px; border-radius: 4px; background: #edf7f4; }
    .flow-cell b { display: block; font-size: 13px; }
    .flow-cell span { color: var(--muted); font-size: 11px; }
    .metrics { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(4,1fr); gap: 0; margin-top: 44px; border: 1px solid #c9e2dc; border-radius: 6px; background: rgba(255,255,255,.84); }
    .metric { padding: 19px 22px; border-right: 1px solid var(--line); }
    .metric:last-child { border-right: 0; }
    .metric strong { display: block; color: var(--teal-dark); font-size: 20px; }
    .metric span { color: var(--muted); font-size: 12px; }
    section.content-section { padding: 76px 0; }
    section.alt-band { background: #eaf5f2; }
    .section-heading { display: flex; align-items: end; justify-content: space-between; gap: 28px; margin-bottom: 30px; }
    .section-heading h2 { margin: 8px 0 0; font-size: 34px; line-height: 1.2; letter-spacing: 0; }
    .section-heading p { max-width: 510px; margin-bottom: 2px; color: var(--muted); }
    .platform-intro { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: start; }
    .intro-copy { color: #4b686d; }
    .intro-copy p { margin-bottom: 15px; }
    .intro-list { display: grid; grid-template-columns: repeat(2,1fr); gap: 0 24px; border-top: 1px solid var(--line); }
    .intro-item { display: flex; gap: 12px; padding: 17px 0; border-bottom: 1px solid var(--line); }
    .intro-mark { flex: 0 0 26px; width: 26px; height: 26px; display: grid; place-items: center; border-radius: 50%; background: var(--mint); color: var(--teal-dark); font-weight: 800; font-size: 13px; }
    .intro-item b { display: block; font-size: 14px; }
    .intro-item span { color: var(--muted); font-size: 12px; }
    .service-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
    .service-item { min-height: 165px; padding: 21px; border: 1px solid #d4e6e1; border-radius: 5px; background: #fff; transition: transform .22s, box-shadow .22s, border-color .22s; }
    .service-item:hover { transform: translateY(-4px); border-color: #8dc9bb; box-shadow: var(--shadow); }
    .service-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
    .service-item h3 { margin: 0; font-size: 17px; }
    .service-number { color: #86aaa4; font-size: 12px; font-weight: 700; }
    .service-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .workflow { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; border-top: 1px solid #b8d9d1; border-bottom: 1px solid #b8d9d1; }
    .step { position: relative; padding: 24px 22px 25px 0; }
    .step:not(:last-child)::after { content: "→"; position: absolute; top: 24px; right: 18px; color: var(--teal); font-size: 20px; }
    .step small { color: var(--teal); font-weight: 800; }
    .step h3 { margin: 8px 0 6px; font-size: 17px; }
    .step p { max-width: 220px; margin: 0; color: var(--muted); font-size: 13px; }
    .solutions-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: start; }
    .solution-copy { padding: 6px 0; }
    .solution-copy h3 { margin-bottom: 12px; font-size: 21px; }
    .solution-copy p { color: var(--muted); }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 20px; }
    .tag-cloud span { padding: 7px 11px; border: 1px solid #bfddd5; border-radius: 4px; background: #f8fcfb; color: #355d5d; font-size: 12px; }
    .solution-list { border-top: 1px solid var(--line); }
    .solution-row { display: grid; grid-template-columns: 120px 1fr; gap: 18px; padding: 15px 0; border-bottom: 1px solid var(--line); }
    .solution-row b { color: var(--teal-dark); font-size: 14px; }
    .solution-row span { color: var(--muted); font-size: 13px; }
    .network-band { display: grid; grid-template-columns: .8fr 1.2fr; gap: 35px; align-items: center; padding: 28px; border-left: 4px solid var(--teal); background: #fff; }
    .network-band h3 { margin-bottom: 9px; font-size: 22px; }
    .network-band p { margin: 0; color: var(--muted); }
    .network-points { display: grid; grid-template-columns: repeat(2,1fr); gap: 13px 22px; }
    .network-points span { color: #38595e; font-size: 14px; }
    .network-points span::before { content: "✓"; margin-right: 9px; color: var(--teal); font-weight: 800; }
    .case-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
    .case-card { overflow: hidden; border: 1px solid var(--line); border-radius: 5px; background: #fff; }
    .case-card .media { overflow: hidden; background: #e5f2ee; aspect-ratio: 16 / 9; }
    .case-card .media.square { aspect-ratio: 1 / 1; }
    .case-card .media img { width: 100%; height: 100%; object-fit: cover; }
    .case-text { padding: 17px 18px 19px; }
    .case-text h3 { margin: 0 0 5px; font-size: 16px; }
    .case-text p { margin: 0; color: var(--muted); font-size: 13px; }
    .review-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
    .review { padding: 19px; border-top: 2px solid #88cfc0; background: #fff; }
    .review blockquote { margin: 0 0 18px; color: #35565b; font-size: 14px; }
    .review cite { color: var(--muted); font-size: 12px; font-style: normal; }
    .score-panel { display: grid; grid-template-columns: .72fr 1.28fr; gap: 34px; padding: 28px; border: 1px solid #b7d9d2; border-radius: 6px; background: #fff; }
    .score-summary { padding: 6px 0; }
    .score-summary .stars { color: #d28b29; font-size: 20px; letter-spacing: 0; }
    .score-summary strong { display: block; margin: 7px 0 4px; color: var(--teal-dark); font-size: 48px; line-height: 1.1; }
    .score-summary p { color: var(--muted); }
    .comparison-wrap { overflow-x: auto; }
    .comparison { width: 100%; border-collapse: collapse; min-width: 510px; font-size: 13px; }
    .comparison th, .comparison td { padding: 11px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
    .comparison th { color: var(--teal-dark); background: #f0f8f5; }
    .comparison td:first-child { width: 31%; font-weight: 700; }
    .comparison td:last-child { color: #47666a; }
    .token-layout { display: grid; grid-template-columns: 1fr .8fr; align-items: center; gap: 45px; }
    .token-copy h2 { margin: 8px 0 12px; font-size: 34px; line-height: 1.2; }
    .token-copy p { color: var(--muted); }
    .token-note { padding: 21px; border: 1px solid #cce2dc; border-radius: 5px; background: #fff; }
    .token-note strong { display: block; margin-bottom: 6px; color: var(--teal-dark); }
    .token-note p { margin: 0; color: var(--muted); font-size: 13px; }
    .faq-list { border-top: 1px solid #bdd8d1; }
    .faq-item { border-bottom: 1px solid #bdd8d1; }
    .faq-item summary { position: relative; padding: 17px 38px 17px 0; cursor: pointer; list-style: none; font-weight: 700; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; position: absolute; right: 4px; top: 14px; color: var(--teal); font-size: 21px; font-weight: 400; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-item p { max-width: 860px; margin: 0; padding: 0 35px 17px 0; color: var(--muted); font-size: 14px; }
    .article-grid { display: grid; grid-template-columns: repeat(5,1fr); gap: 11px; }
    .article-link { display: flex; min-height: 90px; flex-direction: column; justify-content: space-between; padding: 15px; border: 1px solid var(--line); background: #fff; transition: border-color .2s, transform .2s; }
    .article-link:hover { transform: translateY(-3px); border-color: #86c5b7; }
    .article-link b { font-size: 13px; }
    .article-link span { color: var(--teal); font-size: 12px; }
    .contact-grid { display: grid; grid-template-columns: .78fr 1.22fr; gap: 42px; align-items: start; }
    .contact-copy h2 { margin: 8px 0 13px; font-size: 34px; }
    .contact-copy > p { color: var(--muted); }
    .contact-details { margin-top: 23px; border-top: 1px solid var(--line); }
    .contact-line { display: flex; justify-content: space-between; gap: 15px; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
    .contact-line span:first-child { color: var(--muted); }
    .contact-line a { color: var(--teal-dark); font-weight: 700; }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 24px; border: 1px solid var(--line); border-radius: 5px; background: #fff; box-shadow: 0 9px 26px rgba(22,75,75,.05); }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { color: #3b5c60; font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; border: 1px solid #c9deda; border-radius: 4px; outline: none; padding: 11px 12px; background: #fbfdfc; color: var(--ink); }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(8,127,120,.1); }
    .field textarea { min-height: 112px; resize: vertical; }
    .form-submit { grid-column: 1 / -1; display: flex; align-items: center; justify-content: space-between; gap: 15px; }
    .form-submit small { color: var(--muted); }
    .affiliate-band { display: flex; align-items: center; justify-content: space-between; gap: 25px; padding: 26px 0; border-top: 1px solid var(--line); }
    .affiliate-band h2 { margin: 0 0 4px; font-size: 21px; }
    .affiliate-band p { margin: 0; color: var(--muted); font-size: 13px; }
    .site-footer { padding: 27px 0 23px; border-top: 1px solid #c8dfd9; background: #e8f3f0; color: #24464b; }
    .footer-main { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .footer-brand { display: flex; align-items: center; gap: 14px; }
    .footer-brand .ai-page-logo { width: 118px; }
    .footer-brand p { margin: 0; color: #527075; font-size: 12px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; }
    .footer-links a { color: #315a5e; font-size: 12px; }
    .copyright { margin: 18px 0 0; padding-top: 13px; border-top: 1px solid #ccdfda; color: #597478; font-size: 11px; }
    .floating-contact { position: fixed; z-index: 18; right: 18px; bottom: 20px; display: grid; gap: 8px; }
    .floating-contact a { display: grid; width: 48px; height: 48px; place-items: center; border: 1px solid #b9d9d1; border-radius: 50%; background: #fff; color: var(--teal-dark); box-shadow: 0 5px 16px rgba(24,75,72,.13); font-size: 12px; font-weight: 800; transition: transform .2s, background .2s; }
    .floating-contact a:hover { transform: translateY(-3px); background: #e4f5ef; }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @keyframes rise { from { opacity: 0; transform: translateY(12px); } to { 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: 1000px) {
      .nav-links a { padding-inline: 8px; font-size: 13px; }
      .nav-actions .button { padding-inline: 13px; }
      .hero-inner { gap: 28px; }
      .article-grid { grid-template-columns: repeat(3,1fr); }
    }
    @media (max-width: 780px) {
      .container { width: min(100% - 32px, 620px); }
      .nav-row { min-height: 66px; }
      .menu-toggle { display: inline-grid; place-items: center; order: 3; }
      .nav-actions { margin-left: auto; }
      .nav-actions .button { min-height: 40px; padding: 8px 12px; font-size: 13px; }
      .nav-links { position: absolute; top: 66px; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; padding: 8px 16px 14px; border-bottom: 1px solid var(--line); background: var(--paper); }
      .nav-links.is-open { display: flex; }
      .nav-links a { padding: 11px 12px; }
      .hero { padding: 58px 0 36px; }
      .hero-inner, .platform-intro, .solutions-grid, .token-layout, .contact-grid { grid-template-columns: 1fr; }
      .hero-inner { gap: 27px; }
      h1 { font-size: 44px; }
      .hero-console { max-width: 540px; }
      .metrics { grid-template-columns: repeat(2,1fr); margin-top: 28px; }
      .metric:nth-child(2) { border-right: 0; }
      .metric:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
      section.content-section { padding: 58px 0; }
      .section-heading { display: block; }
      .section-heading p { margin-top: 12px; }
      .section-heading h2, .token-copy h2, .contact-copy h2 { font-size: 29px; }
      .service-grid { grid-template-columns: repeat(2,1fr); }
      .workflow { grid-template-columns: repeat(2,1fr); }
      .step:nth-child(2)::after { content: ""; }
      .network-band { grid-template-columns: 1fr; }
      .case-grid { grid-template-columns: repeat(2,1fr); }
      .review-grid { grid-template-columns: repeat(2,1fr); }
      .score-panel { grid-template-columns: 1fr; gap: 18px; }
      .contact-grid { gap: 26px; }
      .footer-main { align-items: flex-start; flex-direction: column; }
    }
    @media (max-width: 520px) {
      .container { width: calc(100% - 28px); }
      .ai-page-logo { width: 118px; }
      .nav-actions .button { min-height: 38px; }
      .hero { padding-top: 46px; }
      h1 { font-size: 39px; }
      .hero-copy { font-size: 15px; }
      .hero-actions .button { flex: 1 1 145px; }
      .hero-console { padding: 17px; }
      .console-flow { grid-template-columns: 1fr; }
      .metrics { margin-top: 24px; }
      .metric { padding: 14px; }
      .metric strong { font-size: 17px; }
      .intro-list, .service-grid, .case-grid, .review-grid { grid-template-columns: 1fr; }
      .service-item { min-height: auto; }
      .workflow { grid-template-columns: 1fr; }
      .step { padding: 16px 0; border-bottom: 1px solid var(--line); }
      .step::after { display: none; }
      .step:last-child { border-bottom: 0; }
      .network-band { padding: 21px; }
      .network-points { grid-template-columns: 1fr; }
      .solution-row { grid-template-columns: 100px 1fr; gap: 12px; }
      .score-panel { padding: 20px; }
      .article-grid { grid-template-columns: repeat(2,1fr); }
      .contact-form { grid-template-columns: 1fr; padding: 18px; }
      .field.full, .form-submit { grid-column: 1; }
      .form-submit { align-items: flex-start; flex-direction: column; }
      .affiliate-band { align-items: flex-start; flex-direction: column; }
      .footer-links { gap: 9px 14px; }
      .floating-contact { right: 10px; bottom: 12px; }
      .floating-contact a { width: 43px; height: 43px; }
    }