:root {
      color-scheme: light;
      --paper: #f7f7f2;
      --ink: #202421;
      --muted: #606963;
      --line: #dfe3dc;
      --green: #caff52;
      --blue: #b8e4ff;
      --coral: #ff836d;
      --violet: #d7c8ff;
      --yellow: #ffe36a;
      --white: #fff;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 90px; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
    }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    button, a, input, select, textarea { -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; top: 0; z-index: 20;
      background: rgba(247,247,242,.94);
      border-bottom: 1px solid rgba(32,36,33,.1);
      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; gap: 11px; flex: 0 0 auto; font-weight: 850; }
    .brand img { width: 42px; max-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 12px; color: #39413b; font-size: 13px; font-weight: 650; border-radius: 4px; transition: background .2s, color .2s; }
    .nav-links a:hover { background: var(--green); color: var(--ink); }
    .nav-cta, .button {
      display: inline-flex; min-height: 46px; align-items: center; justify-content: center;
      padding: 0 19px; border: 1px solid var(--ink); border-radius: 4px;
      background: var(--ink); color: var(--white); font-weight: 750;
      transition: transform .2s, box-shadow .2s, background .2s;
    }
    .nav-cta:hover, .button:hover { transform: translateY(-2px); box-shadow: 4px 4px 0 var(--green); }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); background: var(--white); color: var(--ink); border-radius: 4px; }
    .hero { position: relative; overflow: hidden; padding: 76px 0 56px; border-bottom: 1px solid var(--line); }
    .hero::before, .hero::after { content: ""; position: absolute; z-index: 0; border: 2px solid var(--ink); transform: rotate(-12deg); pointer-events: none; }
    .hero::before { width: 140px; height: 54px; right: 8%; top: 64px; background: var(--coral); border-radius: 50%; }
    .hero::after { width: 74px; height: 74px; right: 17%; bottom: 92px; background: var(--blue); border-radius: 18px; transform: rotate(18deg); }
    .hero-inner { position: relative; z-index: 1; }
    .hero-copy { max-width: 830px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 20px; color: #414941; font-size: 13px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
    .eyebrow::before { content: ""; width: 22px; height: 12px; background: var(--green); border: 1px solid var(--ink); transform: rotate(-8deg); }
    h1, h2, h3, p { margin-top: 0; }
    h1 { max-width: 780px; margin-bottom: 18px; font-size: clamp(42px, 7vw, 76px); line-height: 1.05; letter-spacing: 0; }
    .hero-copy > p { max-width: 660px; margin-bottom: 27px; color: #48514a; font-size: 18px; }
    .hero-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
    .button--lime { color: var(--ink); background: var(--green); }
    .button--light { color: var(--ink); background: transparent; }
    .hero-note { display: flex; align-items: center; gap: 10px; margin-top: 22px; color: var(--muted); font-size: 13px; }
    .hero-note strong { color: var(--ink); }
    .hero-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 60px; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
    .metric { padding: 20px 18px 19px 0; }
    .metric + .metric { padding-left: 20px; border-left: 1px solid var(--line); }
    .metric strong { display: block; font-size: 20px; line-height: 1.2; }
    .metric span { color: var(--muted); font-size: 12px; }
    .section { padding: 78px 0; border-bottom: 1px solid var(--line); }
    .section--white { background: #fff; }
    .section--green { background: #e7f7c2; }
    .section--blue { background: #e5f4fb; }
    .section--ink { background: #232824; color: #fff; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 34px; }
    .section-head > div { max-width: 720px; }
    .kicker { display: block; margin-bottom: 8px; color: #616c64; font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
    .section--ink .kicker { color: #caff52; }
    h2 { margin-bottom: 10px; font-size: clamp(30px, 4vw, 46px); line-height: 1.12; letter-spacing: 0; }
    .section-head p { margin-bottom: 0; color: var(--muted); max-width: 680px; }
    .section--ink .section-head p { color: #c5ccc5; }
    .text-link { border-bottom: 1px solid currentColor; font-weight: 750; white-space: nowrap; }
    .intro-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 42px; align-items: start; }
    .intro-copy { max-width: 650px; color: #4d574f; }
    .intro-copy p:last-child { margin-bottom: 0; }
    .capability-list { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--ink); }
    .capability-list div { padding: 15px 14px 15px 0; border-bottom: 1px solid #cbd0c8; font-weight: 700; }
    .capability-list div:nth-child(odd) { border-right: 1px solid #cbd0c8; }
    .capability-list div:nth-child(even) { padding-left: 15px; }
    .service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 13px; }
    .service-item { min-height: 172px; padding: 19px; border: 1px solid var(--ink); background: var(--white); transition: transform .22s, box-shadow .22s; }
    .service-item:hover { transform: translateY(-4px) rotate(-.4deg); box-shadow: 5px 5px 0 var(--ink); }
    .service-item:nth-child(4n+2) { background: #e8f5d2; }
    .service-item:nth-child(4n+3) { background: #e5f4fb; }
    .service-item:nth-child(4n+4) { background: #fff0db; }
    .service-item h3 { margin-bottom: 8px; font-size: 18px; }
    .service-item p { margin: 0; color: #555e57; font-size: 13px; }
    .service-tag { display: inline-block; margin-bottom: 14px; padding: 2px 7px; border: 1px solid currentColor; font-size: 10px; font-weight: 800; }
    .more-services { margin: 23px 0 0; color: var(--muted); font-size: 13px; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: steps; }
    .step { position: relative; padding: 22px 18px 18px 0; border-top: 2px solid var(--ink); counter-increment: steps; }
    .step::before { content: "0" counter(steps); display: block; margin-bottom: 26px; color: #738075; font-size: 13px; font-weight: 800; }
    .step h3 { margin-bottom: 7px; font-size: 18px; }
    .step p { margin-bottom: 0; color: var(--muted); font-size: 14px; }
    .industry-band { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
    .industry { padding: 20px; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
    .industry h3 { margin-bottom: 7px; font-size: 17px; }
    .industry p { margin: 0; color: #555e57; font-size: 13px; }
    .network-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 42px; align-items: start; }
    .network-copy p { color: #c8cec8; }
    .model-cloud { display: flex; flex-wrap: wrap; gap: 9px; }
    .model-cloud span { display: inline-block; padding: 8px 11px; border: 1px solid #7c857d; border-radius: 2px; color: #f3f5ef; font-size: 13px; }
    .network-meta { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 22px; }
    .network-meta div { padding: 15px; border-left: 3px solid var(--green); background: #303732; }
    .network-meta strong { display: block; font-size: 14px; }
    .network-meta span { color: #c4cbc4; font-size: 12px; }
    .cases-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
    .case { overflow: hidden; background: #fff; border: 1px solid var(--line); }
    .case-media { aspect-ratio: 16 / 8; overflow: hidden; background: #e9ece5; }
    .case-media img { display: block; width: 100%; height: 100%; object-fit: cover; }
    .case-copy { padding: 18px 20px 20px; }
    .case-copy h3 { margin-bottom: 6px; font-size: 19px; }
    .case-copy p { margin: 0; color: var(--muted); font-size: 14px; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
    .review { min-height: 170px; padding: 18px; border-top: 3px solid var(--coral); background: #fff; }
    .review:nth-child(2n) { border-top-color: #9d87e8; }
    .review:nth-child(3n) { border-top-color: #8cbf35; }
    .review blockquote { margin: 0 0 17px; color: #3e4740; font-size: 14px; }
    .review cite { color: #626c64; font-size: 12px; font-style: normal; font-weight: 750; }
    .rating-panel { display: grid; grid-template-columns: .75fr 1.25fr; gap: 34px; align-items: center; margin-bottom: 28px; padding: 24px; border: 1px solid var(--ink); background: var(--green); }
    .rating-score { display: flex; align-items: center; gap: 15px; }
    .rating-score strong { font-size: 56px; line-height: 1; }
    .rating-score span { display: block; font-size: 13px; font-weight: 750; }
    .stars { color: #202421; letter-spacing: 2px; font-size: 18px; }
    .rating-panel p { margin: 0; color: #414a42; font-size: 14px; }
    .table-scroll { 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: #f0f2eb; font-size: 13px; }
    td { color: #505951; font-size: 13px; }
    td:first-child { color: var(--ink); font-weight: 750; }
    .faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 28px; }
    details { border-top: 1px solid #cbd0c8; }
    details:last-child { border-bottom: 1px solid #cbd0c8; }
    summary { position: relative; padding: 17px 28px 17px 0; cursor: pointer; list-style: none; font-weight: 750; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 2px; top: 13px; font-size: 22px; font-weight: 400; }
    details[open] summary::after { content: "−"; }
    details p { margin: 0; padding: 0 18px 18px 0; color: #566058; font-size: 14px; }
    .article-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; }
    .article-links { display: grid; grid-template-columns: 1fr 1fr; gap: 0 18px; }
    .article-links a { padding: 14px 0; border-top: 1px solid var(--line); font-weight: 700; }
    .article-links a span { display: block; color: var(--muted); font-size: 12px; font-weight: 400; }
    .form-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 48px; align-items: start; }
    .contact-copy p { color: #535e55; }
    .contact-list { display: grid; gap: 8px; margin-top: 22px; }
    .contact-list a, .contact-list span { font-size: 14px; font-weight: 700; }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .field { display: grid; 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-width: 0; padding: 12px; border: 1px solid #cbd1c9; border-radius: 2px; background: #fff; color: var(--ink); }
    .field textarea { min-height: 110px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid #92b94d; outline-offset: 1px; }
    .form-grid .button { width: fit-content; cursor: pointer; }
    .footer { padding: 32px 0 24px; background: #e8ebe4; color: #202421; }
    .footer-top { display: flex; justify-content: space-between; align-items: start; gap: 28px; }
    .footer p { margin-bottom: 8px; color: #515b53; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 7px 16px; max-width: 600px; }
    .footer-links a { color: #39423b; font-size: 12px; text-decoration: underline; text-underline-offset: 3px; }
    .copyright { margin-top: 22px; padding-top: 14px; border-top: 1px solid #cbd0c8; color: #5a635c; font-size: 12px; }
    .qr { display: block; width: 112px; margin-top: 10px; border: 1px solid #cbd0c8; }
    .float-actions { position: fixed; right: 18px; bottom: 20px; z-index: 15; display: grid; gap: 8px; }
    .float-actions a { display: grid; place-items: center; width: 46px; height: 46px; border: 1px solid var(--ink); border-radius: 50%; background: var(--green); color: var(--ink); font-size: 12px; font-weight: 850; box-shadow: 2px 2px 0 var(--ink); }
    .reveal { opacity: 0; transform: translateY(16px); 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: 900px) {
      .nav-row { min-height: 68px; }
      .menu-toggle { display: inline-grid; place-items: center; margin-left: auto; }
      .nav-cta { min-height: 40px; padding-inline: 12px; font-size: 13px; }
      .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; padding: 10px 20px 16px; background: var(--paper); border-bottom: 1px solid var(--line); align-items: stretch; }
      .nav-links.is-open { display: grid; grid-template-columns: repeat(3, 1fr); }
      .nav-links a { text-align: center; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .industry-band { grid-template-columns: repeat(2, 1fr); }
      .workflow { grid-template-columns: repeat(2, 1fr); }
      .network-layout, .article-layout, .form-layout { grid-template-columns: 1fr; }
    }
    @media (max-width: 620px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .hero { padding: 55px 0 38px; }
      .hero::before { width: 82px; height: 32px; top: 24px; right: 8%; }
      .hero::after { width: 44px; height: 44px; right: 14%; bottom: 125px; }
      .hero-copy > p { font-size: 16px; }
      .hero-strip { grid-template-columns: 1fr 1fr; margin-top: 42px; }
      .metric { padding: 15px 8px 15px 0; }
      .metric + .metric { padding-left: 12px; }
      .metric:nth-child(3) { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); }
      .metric:nth-child(4) { border-top: 1px solid var(--line); }
      .section { padding: 55px 0; }
      .section-head { align-items: start; flex-direction: column; margin-bottom: 25px; }
      .intro-grid, .rating-panel { grid-template-columns: 1fr; gap: 22px; }
      .service-grid, .industry-band, .workflow, .review-grid, .cases-grid, .faq-grid { grid-template-columns: 1fr; }
      .service-item { min-height: auto; }
      .industry-band { grid-template-columns: 1fr; }
      .rating-score strong { font-size: 46px; }
      .article-links { grid-template-columns: 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .field--full { grid-column: auto; }
      .footer-top { flex-direction: column; }
      .float-actions { right: 12px; bottom: 12px; }
      .float-actions a { width: 42px; height: 42px; }
    }