:root {
      color-scheme: light;
      --ink: #182027;
      --muted: #5c6972;
      --paper: #f7f8fa;
      --white: #fff;
      --line: #dce2e6;
      --teal: #0e776d;
      --teal-dark: #07544e;
      --lime: #d6ef55;
      --coral: #ff694e;
      --blue: #d9f2f5;
      --max: 1180px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 86px; }
    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; }
    button, input, select, textarea { font: inherit; }
    .container { width: min(var(--max), calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(247,248,250,.96);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(12px);
    }
    .nav-row { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; white-space: nowrap; }
    .ai-page-logo { width: 38px; max-width: 100%; height: auto; }
    .nav-links { display: flex; align-items: center; gap: 0; flex-wrap: wrap; justify-content: flex-end; }
    .nav-links a { padding: 8px 9px; color: #38444b; text-decoration: none; font-size: 13px; }
    .nav-links a:hover { color: var(--teal); }
    .nav-actions { display: flex; align-items: center; gap: 10px; }
    .menu-toggle { display: none; border: 1px solid var(--line); background: var(--white); color: var(--ink); padding: 8px 11px; cursor: pointer; }
    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 11px 18px;
      border: 1px solid transparent;
      background: var(--teal);
      color: #fff;
      text-decoration: none;
      font-weight: 700;
      transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
    }
    .button:hover { transform: translateY(-2px); background: var(--teal-dark); box-shadow: 0 8px 20px #0e776d28; }
    .button-bright { background: var(--lime); color: #17201d; }
    .button-bright:hover { background: #c8e33e; }
    .button-outline { background: transparent; border-color: #809096; color: var(--ink); }
    .button-outline:hover { background: #edf2f2; }
    .hero { padding: 68px 0 46px; overflow: hidden; position: relative; }
    .hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; align-items: center; gap: 50px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 18px; font-size: 13px; color: var(--teal-dark); font-weight: 800; text-transform: uppercase; }
    .eyebrow::before { content: ""; width: 27px; height: 4px; background: var(--coral); }
    h1 { max-width: 660px; margin: 0 0 20px; font-size: clamp(42px, 6vw, 72px); line-height: 1.08; letter-spacing: 0; }
    .hero-copy { max-width: 625px; color: #46535b; font-size: 18px; margin: 0 0 25px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-note { margin-top: 20px; color: var(--muted); font-size: 13px; }
    .hero-visual { min-height: 350px; position: relative; display: grid; place-items: center; isolation: isolate; }
    .hero-visual::before { content: ""; position: absolute; inset: 9% 4%; background: var(--teal); border-radius: 48% 52% 42% 58% / 55% 39% 61% 45%; transform: rotate(-7deg); z-index: -2; }
    .hero-visual::after { content: ""; position: absolute; width: 180px; height: 180px; right: 0; top: 0; background: var(--coral); border-radius: 50%; z-index: -1; animation: float 6s ease-in-out infinite; }
    .flow-board { width: min(100%, 390px); padding: 25px; background: #fff; border: 1px solid #e1e6e4; box-shadow: 12px 14px 0 rgba(214,239,85,.95); }
    .flow-board-top { display: flex; align-items: center; justify-content: space-between; padding-bottom: 17px; border-bottom: 1px solid var(--line); font-weight: 800; }
    .live-mark { width: 10px; height: 10px; border-radius: 50%; background: #20a779; box-shadow: 0 0 0 5px #20a77920; }
    .flow-step { display: flex; justify-content: space-between; align-items: center; gap: 14px; padding: 15px 0; border-bottom: 1px solid #edf0f0; }
    .flow-step:last-child { border-bottom: 0; padding-bottom: 0; }
    .flow-step strong { display: block; font-size: 14px; }
    .flow-step small { color: var(--muted); }
    .step-tag { color: var(--teal-dark); font-size: 12px; font-weight: 800; white-space: nowrap; }
    .ticker { border-block: 1px solid #cbd3d4; background: var(--lime); overflow: hidden; }
    .ticker-inner { padding: 12px 0; display: flex; justify-content: center; gap: 28px; flex-wrap: wrap; font-size: 13px; font-weight: 800; }
    .ticker-inner span::before { content: "＋"; margin-right: 7px; color: var(--teal-dark); }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--line); }
    .metric { padding: 25px 18px; border-right: 1px solid var(--line); }
    .metric:last-child { border-right: 0; }
    .metric strong { display: block; font-size: 21px; line-height: 1.3; }
    .metric span { color: var(--muted); font-size: 13px; }
    .section { padding: 78px 0; }
    .section-tint { background: #edf4f2; border-block: 1px solid #dce8e4; }
    .section-ink { background: #17332f; color: #fff; }
    .section-ink .section-intro, .section-ink .muted { color: #cfddda; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 25px; margin-bottom: 32px; }
    .section-head h2 { margin: 0; max-width: 700px; font-size: clamp(30px, 4vw, 46px); line-height: 1.16; }
    .section-intro { max-width: 580px; color: var(--muted); margin: 10px 0 0; }
    .kicker { margin: 0 0 10px; color: var(--teal); font-size: 13px; font-weight: 800; text-transform: uppercase; }
    .section-ink .kicker { color: var(--lime); }
    .text-link { color: var(--teal-dark); font-weight: 800; text-decoration-thickness: 1px; text-underline-offset: 4px; }
    .section-ink .text-link { color: var(--lime); }
    .intro-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 50px; align-items: start; }
    .intro-copy p { margin-top: 0; color: #425058; }
    .capability-list { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid #bfcac7; }
    .capability { padding: 18px 16px 18px 0; border-bottom: 1px solid #bfcac7; }
    .capability strong { display: block; margin-bottom: 5px; }
    .capability span { display: block; color: var(--muted); font-size: 14px; }
    .model-strip { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
    .model-chip { padding: 7px 11px; border: 1px solid #bbc9c5; background: #fff; color: #293a3a; font-size: 12px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 24px; border-top: 1px solid var(--line); }
    .service-item { padding: 23px 6px 21px 0; border-bottom: 1px solid var(--line); }
    .service-item h3 { margin: 0 0 7px; font-size: 18px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .service-mark { width: 28px; height: 4px; margin-bottom: 13px; background: var(--coral); }
    .wide-promo { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 28px; }
    .image-frame { margin: 0; overflow: hidden; background: #e7eeee; }
    .image-frame img { display: block; width: 100%; height: auto; object-fit: contain; }
    .promo-note { margin: 12px 0 0; color: var(--muted); font-size: 13px; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: flow; }
    .workflow-item { position: relative; padding: 25px 20px 22px 0; border-top: 2px solid #8aa8a1; counter-increment: flow; }
    .workflow-item::before { content: "0" counter(flow); display: block; margin-bottom: 18px; color: var(--coral); font-weight: 900; font-size: 15px; }
    .workflow-item h3 { margin: 0 0 8px; font-size: 18px; }
    .workflow-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .automation-band { margin-top: 27px; padding: 22px 26px; display: flex; align-items: center; justify-content: space-between; gap: 20px; background: var(--lime); color: var(--ink); }
    .automation-band strong { font-size: 18px; }
    .automation-band p { margin: 3px 0 0; font-size: 14px; }
    .sector-list { display: flex; flex-wrap: wrap; gap: 10px; }
    .sector-list span { padding: 10px 14px; border: 1px solid #cbd8d4; background: #fff; font-size: 14px; }
    .network-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 45px; align-items: center; }
    .network-copy p { color: #d1ddda; }
    .network-points { display: grid; grid-template-columns: repeat(2, 1fr); gap: 13px; }
    .network-point { padding: 15px; border: 1px solid #55706a; color: #eff6f3; }
    .network-point strong { display: block; color: var(--lime); font-size: 14px; }
    .network-point span { color: #cfddda; font-size: 13px; }
    .comparison-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    table { width: 100%; min-width: 760px; border-collapse: collapse; text-align: left; }
    th, td { padding: 15px 17px; border-bottom: 1px solid var(--line); vertical-align: top; }
    th { background: #edf4f2; font-size: 13px; }
    td { color: #46535b; font-size: 14px; }
    th:first-child, td:first-child { color: var(--ink); font-weight: 700; }
    .rating { display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: center; margin-bottom: 25px; padding: 22px 25px; background: var(--teal); color: #fff; }
    .rating strong { display: block; font-size: 23px; }
    .rating-score { text-align: right; color: var(--lime); font-size: 31px; font-weight: 900; }
    .rating-score small { display: block; color: #e4eeeb; font-size: 12px; font-weight: 500; }
    .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .case-item { padding: 20px; border-top: 4px solid var(--coral); background: #fff; }
    .case-item:nth-child(2) { border-color: var(--lime); }
    .case-item:nth-child(3) { border-color: #47b7b0; }
    .case-item h3 { margin: 0 0 8px; font-size: 18px; }
    .case-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .match-layout { display: grid; grid-template-columns: .82fr 1.18fr; gap: 45px; align-items: start; }
    .match-copy p { color: var(--muted); }
    .match-copy ul { padding-left: 19px; color: #45545a; }
    .form-panel { padding: 25px; background: #fff; border: 1px solid var(--line); }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field-wide { grid-column: 1 / -1; }
    .field label { font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-height: 44px; padding: 10px 11px; border: 1px solid #cbd4d6; border-radius: 0; background: #fff; color: var(--ink); }
    .field textarea { min-height: 112px; resize: vertical; }
    .form-actions { margin-top: 16px; display: flex; align-items: center; flex-wrap: wrap; gap: 14px; }
    .form-hint { color: var(--muted); font-size: 12px; }
    .price-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: start; }
    .price-copy p { color: #d1ddda; }
    .price-steps { border-top: 1px solid #55706a; }
    .price-step { display: flex; justify-content: space-between; gap: 18px; padding: 14px 0; border-bottom: 1px solid #55706a; }
    .price-step span { color: #cfddda; }
    .price-step strong { color: var(--lime); text-align: right; }
    .faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 28px; }
    details { border-top: 1px solid #cbd4d5; }
    details:last-child { border-bottom: 1px solid #cbd4d5; }
    summary { position: relative; padding: 17px 30px 17px 0; cursor: pointer; list-style: none; font-weight: 700; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 3px; top: 13px; color: var(--teal); font-size: 22px; }
    details[open] summary::after { content: "−"; }
    details p { margin: 0 0 17px; color: var(--muted); font-size: 14px; }
    .reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .review { padding: 20px 0; border-top: 3px solid var(--lime); }
    .review:nth-child(3n+2) { border-color: var(--coral); }
    .review:nth-child(3n) { border-color: #52b8b0; }
    .review blockquote { margin: 0 0 15px; color: #f4f8f7; }
    .review cite { color: var(--lime); font-size: 13px; font-style: normal; }
    .knowledge-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .knowledge-item { padding: 20px 20px 18px 0; border-top: 1px solid #627a74; }
    .knowledge-item h3 { margin: 0 0 7px; font-size: 17px; color: var(--lime); }
    .knowledge-item p { margin: 0; color: #cfddda; font-size: 14px; }
    .article-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 28px; border-top: 1px solid var(--line); }
    .article { display: flex; justify-content: space-between; align-items: center; gap: 18px; padding: 17px 0; border-bottom: 1px solid var(--line); text-decoration: none; }
    .article strong { font-size: 15px; }
    .article span { color: var(--teal); font-size: 13px; white-space: nowrap; }
    .article:hover strong { color: var(--teal-dark); }
    .contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
    .contact-details { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 22px; }
    .contact-detail { padding: 15px; border: 1px solid #bfd0cc; background: #fff; }
    .contact-detail strong { display: block; font-size: 13px; }
    .contact-detail span, .contact-detail a { color: var(--muted); font-size: 14px; }
    .qr-frame { max-width: 210px; margin-top: 22px; padding: 9px; background: #fff; border: 1px solid var(--line); }
    .qr-frame img { display: block; width: 100%; height: auto; }
    .join-band { padding: 28px; display: flex; align-items: center; justify-content: space-between; gap: 22px; background: var(--coral); color: #1c2427; }
    .join-band h2 { margin: 0; font-size: 28px; }
    .join-band p { margin: 5px 0 0; }
    .footer { padding: 25px 0; background: #e9eeef; color: #263239; border-top: 1px solid #d1d9db; }
    .footer-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .footer p { margin: 0; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 16px; justify-content: flex-end; }
    .footer-links a { color: #34474c; font-size: 13px; text-decoration: none; }
    .float-contact { position: fixed; right: 18px; bottom: 18px; z-index: 15; display: grid; gap: 8px; }
    .float-contact a { padding: 11px 14px; background: var(--teal); color: white; text-decoration: none; font-size: 13px; font-weight: 700; box-shadow: 0 5px 18px #18202725; }
    .float-contact a:last-child { background: var(--coral); color: #17201d; }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
    @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-row { flex-wrap: wrap; padding-block: 12px; }
      .nav-links { order: 3; width: 100%; justify-content: flex-start; }
      .nav-links a { padding: 7px 8px; }
      .hero-grid { gap: 25px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 700px) {
      .container { width: min(var(--max), calc(100% - 32px)); }
      .nav-row { min-height: 64px; flex-wrap: nowrap; }
      .nav-actions { margin-left: auto; }
      .menu-toggle { display: inline-flex; }
      .nav-links { display: none; order: 4; width: 100%; padding: 8px 0 12px; border-top: 1px solid var(--line); }
      .nav-links.is-open { display: flex; }
      .nav-row.is-open { flex-wrap: wrap; }
      .nav-links a { width: 50%; padding: 9px 6px; }
      .nav-actions .button { display: none; }
      .hero { padding: 44px 0 30px; }
      .hero-grid, .intro-layout, .network-layout, .match-layout, .price-grid, .contact-layout { grid-template-columns: 1fr; }
      .hero-grid { gap: 24px; }
      .hero-visual { min-height: 290px; }
      .flow-board { padding: 20px; }
      .section { padding: 55px 0; }
      .section-head { display: block; }
      .metrics { grid-template-columns: 1fr 1fr; }
      .metric:nth-child(2) { border-right: 0; }
      .metric:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
      .workflow { grid-template-columns: 1fr 1fr; }
      .automation-band { align-items: flex-start; flex-direction: column; }
      .case-grid, .reviews-grid, .knowledge-grid { grid-template-columns: 1fr; }
      .faq-grid { grid-template-columns: 1fr; }
      .wide-promo { grid-template-columns: 1fr; }
      .article-list { grid-template-columns: 1fr; }
      .form-grid { grid-template-columns: 1fr; }
      .field-wide { grid-column: auto; }
      .contact-details { grid-template-columns: 1fr 1fr; }
      .rating { grid-template-columns: 1fr auto; padding: 18px; }
      .footer-row { align-items: flex-start; flex-direction: column; }
      .footer-links { justify-content: flex-start; }
      .join-band { align-items: flex-start; flex-direction: column; }
      .float-contact { right: 10px; bottom: 10px; }
    }
    @media (max-width: 420px) {
      .hero-actions .button { width: 100%; }
      .contact-details { grid-template-columns: 1fr; }
      .network-points { grid-template-columns: 1fr; }
      .workflow { grid-template-columns: 1fr; }
      .ticker-inner { justify-content: flex-start; gap: 10px 18px; }
    }