:root {
      color-scheme: light;
      --ink: #183b3c;
      --muted: #587271;
      --teal: #087f78;
      --teal-dark: #075a59;
      --mint: #c9f4e9;
      --paper: #f3fbf8;
      --white: #fff;
      --line: #d7e9e4;
      --coral: #d97250;
      --gold: #e8b85b;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 88px; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
    }
    a { color: inherit; }
    button, input, select, textarea { font: inherit; }
    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(248, 255, 252, .96);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(12px);
    }
    .header-inner { 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; flex: 0 0 auto; }
    .brand img { width: 38px; max-height: 38px; object-fit: contain; }
    .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; }
    .nav-links a { padding: 8px 9px; color: #365b59; font-size: 12px; text-decoration: none; white-space: nowrap; }
    .nav-links a:hover { color: var(--teal); }
    .nav-toggle { display: none; border: 1px solid var(--line); background: white; color: var(--ink); padding: 8px 12px; border-radius: 5px; cursor: pointer; }
    .button {
      display: inline-flex; justify-content: center; align-items: center; gap: 8px;
      min-height: 46px; padding: 11px 20px; border: 1px solid var(--teal);
      border-radius: 5px; background: var(--teal); color: #fff; font-weight: 700;
      text-decoration: none; transition: transform .2s, background .2s, box-shadow .2s;
    }
    .button:hover { background: var(--teal-dark); transform: translateY(-2px); box-shadow: 0 9px 22px rgba(7,90,89,.18); }
    .button.secondary { background: transparent; color: var(--teal-dark); }
    .button.secondary:hover { background: #e0f5ef; }
    .hero {
      overflow: hidden; position: relative;
      background: linear-gradient(120deg, #d7f7ed 0%, #e9f8f6 52%, #f6fcf6 100%);
      border-bottom: 1px solid var(--line);
    }
    .hero::after {
      content: ""; position: absolute; width: 360px; height: 360px; right: 5%; top: -165px;
      border: 1px solid rgba(8,127,120,.18); border-radius: 50%;
      box-shadow: 0 0 0 35px rgba(8,127,120,.035), 0 0 0 70px rgba(8,127,120,.025);
      pointer-events: none;
    }
    .hero-inner { position: relative; z-index: 1; padding-block: 78px 65px; }
    .hero-copy { max-width: 770px; animation: rise .65s ease-out both; }
    .eyebrow { margin: 0 0 14px; color: var(--teal-dark); font-size: 13px; font-weight: 800; letter-spacing: 1px; }
    h1 { max-width: 700px; margin: 0; font-size: clamp(38px, 6vw, 66px); line-height: 1.12; letter-spacing: 0; }
    .hero-lede { max-width: 680px; margin: 22px 0 0; color: #416260; font-size: 18px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .hero-points { display: flex; flex-wrap: wrap; gap: 10px 22px; margin: 28px 0 0; padding: 0; list-style: none; color: #365b59; font-size: 14px; }
    .hero-points li::before { content: "✓"; margin-right: 8px; color: var(--teal); font-weight: 900; }
    .hero-mark { position: absolute; right: 7%; bottom: 38px; width: 250px; height: 120px; opacity: .7; }
    .hero-mark span { position: absolute; display: block; border: 1px solid rgba(8,127,120,.35); transform: skew(-32deg); }
    .hero-mark span:nth-child(1) { width: 105px; height: 105px; right: 70px; bottom: 0; }
    .hero-mark span:nth-child(2) { width: 64px; height: 64px; right: 10px; bottom: 14px; background: rgba(201,244,233,.55); }
    .hero-mark span:nth-child(3) { width: 42px; height: 42px; right: 155px; bottom: 56px; background: rgba(217,114,80,.14); }
    .section { padding-block: 68px; }
    .section.tinted { background: #eaf6f2; border-block: 1px solid var(--line); }
    .section-head { max-width: 720px; margin-bottom: 28px; }
    .section-kicker { margin: 0 0 7px; color: var(--teal); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: 1px; }
    h2 { margin: 0; font-size: clamp(27px, 4vw, 38px); line-height: 1.25; letter-spacing: 0; }
    .section-head > p:last-child { margin: 12px 0 0; color: var(--muted); }
    h3 { margin: 0 0 9px; font-size: 18px; line-height: 1.4; }
    .stats { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); background: #fff; }
    .stat { padding: 22px; border-right: 1px solid var(--line); }
    .stat:last-child { border-right: 0; }
    .stat strong { display: block; color: var(--teal-dark); font-size: 23px; }
    .stat span { color: var(--muted); font-size: 13px; }
    .intro-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 44px; align-items: start; }
    .intro-copy p { margin: 0 0 14px; color: var(--muted); }
    .intro-aside { padding: 20px 0 20px 24px; border-left: 3px solid var(--coral); }
    .intro-aside strong { display: block; margin-bottom: 8px; font-size: 17px; }
    .intro-aside p { margin: 0; color: var(--muted); font-size: 14px; }
    .feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .feature { padding: 21px; border: 1px solid var(--line); border-top: 3px solid var(--teal); background: #fff; transition: transform .2s, box-shadow .2s; }
    .feature:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(24,59,60,.08); }
    .feature p { margin: 0; color: var(--muted); font-size: 14px; }
    .feature-index { display: inline-block; margin-bottom: 12px; color: var(--coral); font-size: 12px; font-weight: 800; }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 9px; }
    .tag-cloud span { padding: 7px 11px; border: 1px solid #cce4dd; background: #f9fffc; color: #365b59; font-size: 13px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 28px; }
    .service-item { padding: 18px 0; border-bottom: 1px solid var(--line); }
    .service-item h3 { font-size: 16px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-item a { display: inline-block; margin-top: 8px; color: var(--teal-dark); font-size: 13px; font-weight: 700; text-decoration-thickness: 1px; text-underline-offset: 3px; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: steps; }
    .step { position: relative; padding-top: 18px; border-top: 2px solid #80c9b6; counter-increment: steps; }
    .step::before { content: "0" counter(steps); color: var(--coral); font-size: 12px; font-weight: 800; }
    .step h3 { margin-top: 8px; }
    .step p { margin: 0; color: var(--muted); font-size: 14px; }
    .solution-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 36px; align-items: start; }
    .solution-list { margin: 0; padding: 0; list-style: none; }
    .solution-list li { padding: 12px 0; border-bottom: 1px solid var(--line); color: #365b59; }
    .solution-list strong { color: var(--ink); }
    .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .case { background: #fff; border-bottom: 3px solid var(--teal); }
    .case-media { overflow: hidden; aspect-ratio: 16 / 9; background: #d9eee7; }
    .case-media img { display: block; width: 100%; height: 100%; object-fit: cover; }
    .case-copy { padding: 17px; }
    .case-copy p { margin: 0; color: var(--muted); font-size: 14px; }
    .case-copy span { display: inline-block; margin-top: 10px; color: var(--teal); font-size: 12px; font-weight: 800; }
    .comparison { display: grid; grid-template-columns: .72fr 1.28fr; gap: 28px; align-items: start; }
    .rating { padding: 24px; background: var(--teal-dark); color: #fff; }
    .rating p { margin: 0 0 8px; color: #d7f3eb; }
    .rating strong { display: block; color: #fff; font-size: 48px; line-height: 1.1; }
    .rating .stars { margin: 12px 0; color: var(--gold); font-size: 22px; letter-spacing: 2px; }
    .rating small { color: #d7f3eb; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    table { width: 100%; border-collapse: collapse; min-width: 540px; }
    th, td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--line); font-size: 14px; }
    th { background: #e3f4ee; color: var(--teal-dark); }
    td:last-child { font-weight: 700; }
    .table-note { margin: 10px 0 0; color: var(--muted); font-size: 12px; }
    .price-band { display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: center; padding: 25px 28px; border-left: 4px solid var(--coral); background: #fff; }
    .price-band p { margin: 6px 0 0; color: var(--muted); }
    .price-band strong { color: var(--teal-dark); }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .review { padding: 19px; border: 1px solid var(--line); background: #fff; }
    .review blockquote { margin: 0; color: #365b59; font-size: 14px; }
    .review footer { margin-top: 14px; padding: 0; border: 0; background: transparent; color: var(--muted); font-size: 12px; }
    .review footer strong { display: block; color: var(--ink); font-size: 13px; }
    .faq-list { border-top: 1px solid var(--line); }
    details { border-bottom: 1px solid var(--line); background: rgba(255,255,255,.54); }
    summary { position: relative; padding: 16px 40px 16px 4px; cursor: pointer; list-style: none; font-weight: 700; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 5px; top: 12px; color: var(--teal); font-size: 22px; }
    details[open] summary::after { content: "−"; }
    details p { max-width: 850px; margin: 0; padding: 0 38px 17px 4px; color: var(--muted); font-size: 14px; }
    .article-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; }
    .article-list a { min-height: 82px; display: flex; align-items: center; padding: 14px; border: 1px solid var(--line); background: #fff; color: var(--teal-dark); font-size: 14px; font-weight: 700; text-decoration: none; }
    .article-list a:hover { border-color: var(--teal); }
    .contact-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 42px; align-items: start; }
    .contact-copy p { color: var(--muted); }
    .contact-details { margin-top: 22px; }
    .contact-details p { margin: 8px 0; font-size: 14px; }
    .contact-details a { color: var(--teal-dark); }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .field { display: flex; flex-direction: column; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    .field label { font-size: 13px; font-weight: 700; }
    .field input, .field select, .field textarea { width: 100%; padding: 11px 12px; border: 1px solid #bfd8d1; border-radius: 3px; background: #fff; color: var(--ink); }
    .field textarea { min-height: 120px; resize: vertical; }
    .form-status { grid-column: 1 / -1; margin: 0; color: var(--muted); font-size: 13px; }
    .contact-form .button { justify-self: start; }
    .footer { padding: 28px 0 22px; border-top: 1px solid var(--line); background: #eaf6f2; color: var(--ink); }
    .footer-top { display: flex; justify-content: space-between; align-items: start; gap: 30px; }
    .footer p { margin: 4px 0; color: #496765; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; max-width: 650px; }
    .footer-links a { color: var(--teal-dark); font-size: 13px; text-decoration: none; }
    .copyright { margin-top: 18px !important; padding-top: 13px; border-top: 1px solid var(--line); }
    .floating-contact { position: fixed; z-index: 15; right: 18px; bottom: 20px; }
    .floating-contact a { display: inline-flex; align-items: center; gap: 8px; padding: 11px 15px; border: 1px solid #fff; background: var(--teal-dark); color: #fff; box-shadow: 0 5px 20px rgba(24,59,60,.2); text-decoration: none; font-size: 13px; font-weight: 700; }
    .to-top { position: fixed; z-index: 14; right: 25px; bottom: 78px; display: none; padding: 8px 12px; border: 1px solid var(--line); background: #fff; color: var(--teal-dark); cursor: pointer; }
    .to-top.visible { display: block; }
    .reveal { opacity: 0; transform: translateY(12px); transition: opacity .5s ease, transform .5s ease; }
    .reveal.in-view { opacity: 1; transform: none; }
    @keyframes rise { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
    @media (max-width: 1000px) {
      .header-inner { flex-wrap: wrap; padding-block: 12px; }
      .nav-toggle { display: inline-block; }
      .nav-links { display: none; width: 100%; justify-content: flex-start; padding: 6px 0 3px; border-top: 1px solid var(--line); }
      .nav-links.open { display: flex; }
      .nav-links a { padding: 8px 10px 8px 0; margin-right: 10px; }
    }
    @media (max-width: 760px) {
      .container { width: min(var(--container), calc(100% - 30px)); }
      .hero-inner { padding-block: 60px 48px; }
      .hero-mark { right: -12px; bottom: 14px; opacity: .4; transform: scale(.72); transform-origin: right bottom; }
      .hero-copy { position: relative; z-index: 2; }
      .section { padding-block: 50px; }
      .stats { grid-template-columns: repeat(2, 1fr); }
      .stat:nth-child(2) { border-right: 0; }
      .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
      .intro-grid, .solution-layout, .comparison, .contact-grid { grid-template-columns: 1fr; gap: 24px; }
      .feature-grid, .service-grid, .case-grid, .review-grid { grid-template-columns: repeat(2, 1fr); }
      .workflow { grid-template-columns: repeat(2, 1fr); }
      .article-list { grid-template-columns: repeat(2, 1fr); }
      .footer-top { flex-direction: column; }
    }
    @media (max-width: 480px) {
      .feature-grid, .service-grid, .case-grid, .review-grid, .workflow { grid-template-columns: 1fr; }
      .hero-lede { font-size: 16px; }
      .price-band { grid-template-columns: 1fr; }
      .contact-form { grid-template-columns: 1fr; }
      .field.full, .form-status { grid-column: auto; }
      .floating-contact { right: 10px; bottom: 10px; }
      .floating-contact a { padding: 10px 12px; }
      .to-top { right: 16px; bottom: 64px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }