:root {
      color-scheme: light;
      --ink: #172a37;
      --muted: #566b76;
      --paper: #f6f9f7;
      --white: #fff;
      --line: #dce8e3;
      --green: #176a4c;
      --lime: #c8ee60;
      --coral: #f26b51;
      --blue: #e7f4f2;
      --container: 1160px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 84px; }
    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 { -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;
      border-bottom: 1px solid rgba(23, 42, 55, .08);
      background: rgba(255,255,255,.94);
      backdrop-filter: blur(12px);
    }
    .nav-row { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; flex: 0 0 auto; gap: 10px; }
    .ai-page-logo { display: block; width: 42px; max-width: 100%; height: auto; }
    .brand-name { font-size: 17px; font-weight: 800; letter-spacing: 0; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; color: #354b56; font-size: 13px; }
    .nav-links a { padding: 10px 9px; transition: color .2s ease; }
    .nav-links a:hover { color: var(--green); }
    .nav-cta, .button {
      min-height: 44px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 0 18px;
      border: 1px solid transparent;
      border-radius: 4px;
      background: var(--green);
      color: white;
      font-weight: 700;
      transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
    }
    .nav-cta:hover, .button:hover { background: #0e563c; box-shadow: 0 8px 20px rgba(23,106,76,.18); transform: translateY(-2px); }
    .button-light { border-color: rgba(255,255,255,.45); background: transparent; color: white; }
    .button-light:hover { background: rgba(255,255,255,.14); }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 4px; background: white; color: var(--ink); cursor: pointer; }
    .menu-toggle span, .menu-toggle::before, .menu-toggle::after { content: ""; display: block; width: 18px; height: 2px; margin: 4px auto; background: currentColor; }

    .hero {
      position: relative;
      overflow: hidden;
      padding: 74px 0 58px;
      background: #12684e;
      color: white;
      isolation: isolate;
    }
    .hero::before, .hero::after { position: absolute; z-index: -1; content: ""; pointer-events: none; }
    .hero::before { width: 520px; height: 520px; right: -110px; top: -220px; border: 1px solid rgba(200,238,96,.4); border-radius: 50%; box-shadow: 0 0 0 44px rgba(200,238,96,.06), 0 0 0 90px rgba(200,238,96,.04); }
    .hero::after { inset: auto 0 0; height: 1px; background: rgba(255,255,255,.22); }
    .hero-layout { display: grid; grid-template-columns: minmax(0, 1.18fr) minmax(280px, .82fr); align-items: center; gap: 54px; }
    .eyebrow { margin: 0 0 14px; color: var(--lime); font-size: 12px; font-weight: 800; letter-spacing: 1.5px; text-transform: uppercase; }
    h1 { max-width: 700px; margin: 0; font-size: clamp(38px, 5vw, 64px); line-height: 1.13; letter-spacing: 0; }
    .hero-copy { max-width: 640px; margin: 20px 0 28px; color: #e1f0e9; font-size: 17px; }
    .hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
    .hero-note { margin: 18px 0 0; color: #d2e7dc; font-size: 13px; }
    .hero-panel { padding: 25px; border: 1px solid rgba(255,255,255,.24); border-radius: 6px; background: rgba(255,255,255,.08); }
    .hero-panel-label { color: var(--lime); font-size: 12px; font-weight: 800; letter-spacing: .8px; }
    .hero-panel h2 { margin: 8px 0 18px; font-size: 22px; line-height: 1.35; }
    .model-tags { display: flex; flex-wrap: wrap; gap: 8px; }
    .model-tags span { padding: 6px 10px; border: 1px solid rgba(255,255,255,.3); border-radius: 3px; color: white; font-size: 12px; }
    .hero-panel-foot { margin-top: 18px; padding-top: 14px; border-top: 1px solid rgba(255,255,255,.22); color: #e1f0e9; font-size: 13px; }
    .metric-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 48px; border-top: 1px solid rgba(255,255,255,.22); }
    .metric { padding: 19px 14px 0 0; }
    .metric strong { display: block; color: var(--lime); font-size: 20px; }
    .metric span { color: #d8e9e1; font-size: 12px; }

    main { overflow: hidden; }
    .section { padding: 72px 0; }
    .section-alt { background: #edf4f0; }
    .section-heading { max-width: 690px; margin-bottom: 32px; }
    .section-kicker { margin: 0 0 8px; color: var(--green); font-size: 12px; font-weight: 800; letter-spacing: 1.2px; }
    h2 { margin: 0; font-size: clamp(28px, 3.4vw, 40px); line-height: 1.22; letter-spacing: 0; }
    .section-heading p { margin: 12px 0 0; color: var(--muted); }
    .intro-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: start; }
    .intro-text p { margin: 0 0 14px; color: var(--muted); }
    .capability-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 22px; border-top: 1px solid var(--line); }
    .capability-list div { padding: 15px 0; border-bottom: 1px solid var(--line); }
    .capability-list strong { display: block; margin-bottom: 4px; }
    .capability-list span { color: var(--muted); font-size: 13px; }
    .service-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
    .service-item { min-height: 150px; padding: 18px; border: 1px solid var(--line); border-top: 3px solid var(--green); background: var(--white); transition: transform .22s ease, box-shadow .22s ease; }
    .service-item:hover { transform: translateY(-4px); box-shadow: 0 12px 26px rgba(26,58,45,.09); }
    .service-index { color: var(--coral); font-size: 11px; font-weight: 800; }
    .service-item h3 { margin: 8px 0 6px; font-size: 16px; line-height: 1.35; }
    .service-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: step; }
    .workflow article { position: relative; padding: 18px 24px 18px 0; border-top: 1px solid #9db6a8; }
    .workflow article::before { counter-increment: step; content: "0" counter(step); display: block; margin-bottom: 14px; color: var(--green); font-size: 13px; font-weight: 800; }
    .workflow h3 { margin: 0 0 6px; font-size: 16px; }
    .workflow p { margin: 0; color: var(--muted); font-size: 13px; }
    .solution-layout { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(300px, .9fr); gap: 36px; align-items: start; }
    .solution-layout figure { margin: 0; }
    .media-frame { overflow: hidden; border: 1px solid var(--line); background: #e4ece8; }
    .media-frame img { display: block; width: 100%; height: auto; }
    .media-caption { margin-top: 10px; color: var(--muted); font-size: 12px; }
    .solution-list { display: grid; gap: 0; }
    .solution-list article { padding: 14px 0; border-bottom: 1px solid var(--line); }
    .solution-list article:first-child { padding-top: 0; }
    .solution-list h3 { margin: 0 0 4px; font-size: 16px; }
    .solution-list p { margin: 0; color: var(--muted); font-size: 13px; }
    .review-score { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; margin: 0 0 22px; padding: 17px 20px; border-left: 4px solid var(--coral); background: #fff; }
    .score-number { color: var(--green); font-size: 30px; font-weight: 900; line-height: 1; }
    .stars { color: #d9782d; letter-spacing: 2px; }
    .score-note { color: var(--muted); font-size: 13px; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: white; }
    table { width: 100%; border-collapse: collapse; min-width: 680px; text-align: left; }
    th, td { padding: 13px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
    th { background: #e9f2ed; font-size: 13px; }
    td { color: #435863; font-size: 13px; }
    td:first-child { color: var(--ink); font-weight: 700; }
    tr:last-child td { border-bottom: 0; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
    .review-card { padding: 18px; border: 1px solid var(--line); background: white; }
    .review-card p { margin: 0 0 16px; color: #405560; font-size: 14px; }
    .review-card strong { display: block; font-size: 13px; }
    .review-card span { color: var(--muted); font-size: 12px; }
    .case-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px; align-items: center; }
    .case-copy p { color: var(--muted); }
    .case-points { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 22px; }
    .case-points span { padding: 6px 10px; border: 1px solid #bdd0c5; color: #315242; font-size: 12px; }
    .article-links { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; }
    .article-links a { display: flex; min-height: 94px; align-items: flex-end; padding: 14px; border-bottom: 3px solid var(--green); background: white; font-weight: 700; font-size: 14px; transition: background .2s ease, transform .2s ease; }
    .article-links a:hover { background: #e8f2ec; transform: translateY(-3px); }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { position: relative; padding: 17px 38px 17px 0; cursor: pointer; font-weight: 700; list-style: none; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; position: absolute; right: 4px; top: 13px; color: var(--green); font-size: 22px; font-weight: 400; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-item p { max-width: 850px; margin: -3px 0 18px; color: var(--muted); font-size: 14px; }
    .contact-band { background: #dceee3; }
    .contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 42px; align-items: start; }
    .contact-copy p { color: #455f54; }
    .contact-details { display: grid; gap: 8px; margin-top: 20px; color: #314d40; font-size: 14px; }
    .contact-form { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 13px; padding: 22px; border: 1px solid #c6d9ce; background: white; }
    .field { display: grid; gap: 5px; }
    .field label { font-size: 12px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; min-height: 44px; padding: 10px 11px; border: 1px solid #cbd8d1; border-radius: 2px; background: #fff; color: var(--ink); }
    .field textarea { min-height: 100px; resize: vertical; }
    .field-wide { grid-column: 1 / -1; }
    .contact-form .button { width: fit-content; cursor: pointer; }
    .footer { padding: 30px 0; background: #173c31; color: #f2f7f4; }
    .footer-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .footer p { margin: 0; color: #d2e2d9; font-size: 12px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 16px; }
    .footer-links a { color: #e6f0ea; font-size: 12px; }
    .footer-links a:hover { color: var(--lime); }
    .footer-meta { margin-top: 16px !important; padding-top: 14px; border-top: 1px solid rgba(255,255,255,.18); }
    .float-contact { position: fixed; z-index: 15; right: 18px; bottom: 18px; display: grid; gap: 8px; }
    .float-contact a, .float-contact button { display: grid; width: 48px; height: 48px; place-items: center; border: 1px solid #c8d8cf; border-radius: 50%; background: white; color: var(--green); box-shadow: 0 4px 16px rgba(22,48,37,.14); font-size: 12px; font-weight: 800; cursor: pointer; }
    .float-contact a:hover, .float-contact button:hover { background: var(--green); color: white; }
    .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: 980px) {
      .nav-links a { padding-inline: 6px; font-size: 12px; }
      .nav-cta { padding-inline: 12px; font-size: 13px; }
      .hero-layout { gap: 30px; }
      .service-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    }
    @media (max-width: 760px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .nav-row { min-height: 64px; }
      .menu-toggle { display: block; margin-left: auto; }
      .nav-cta { display: none; }
      .nav-links { position: absolute; top: 64px; left: 0; right: 0; display: none; align-items: stretch; padding: 8px 16px 14px; border-bottom: 1px solid var(--line); background: white; }
      .nav-links.is-open { display: grid; grid-template-columns: repeat(2, 1fr); }
      .nav-links a { padding: 10px; font-size: 14px; }
      .hero { padding: 56px 0 38px; }
      .hero-layout, .intro-grid, .solution-layout, .case-grid, .contact-grid { grid-template-columns: 1fr; }
      .hero-layout { gap: 28px; }
      .hero-panel { max-width: 560px; }
      .metric-strip { grid-template-columns: repeat(2, 1fr); row-gap: 16px; margin-top: 34px; }
      .section { padding: 54px 0; }
      .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .workflow { grid-template-columns: repeat(2, 1fr); row-gap: 14px; }
      .review-grid { grid-template-columns: repeat(2, 1fr); }
      .article-links { grid-template-columns: repeat(2, 1fr); }
      .footer-row { align-items: flex-start; flex-direction: column; }
    }
    @media (max-width: 480px) {
      .brand-name { font-size: 15px; }
      .ai-page-logo { width: 36px; }
      .hero-copy { font-size: 15px; }
      .service-grid, .review-grid, .workflow, .capability-list { grid-template-columns: 1fr; }
      .service-item { min-height: 0; }
      .contact-form { grid-template-columns: 1fr; padding: 16px; }
      .field-wide { grid-column: auto; }
      .article-links { grid-template-columns: 1fr 1fr; }
      .article-links a { min-height: 78px; }
      .float-contact { right: 10px; bottom: 10px; }
    }