:root {
      color-scheme: light;
      --ink: #172b35;
      --muted: #5e7077;
      --line: #dce7e8;
      --paper: #f8fafb;
      --white: #fff;
      --teal: #087e79;
      --teal-dark: #075e5b;
      --lime: #d8ef56;
      --coral: #e87557;
      --blue: #316cb4;
      --shadow: 0 14px 40px rgba(24, 57, 63, .08);
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 88px; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
    }
    a { color: inherit; text-decoration: none; }
    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, 250, 251, .95);
      border-bottom: 1px solid rgba(220, 231, 232, .9);
      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; gap: 11px; flex-shrink: 0; font-weight: 800; font-size: 18px; }
    .brand img { width: 38px; max-height: 38px; object-fit: contain; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 10px 11px; color: #42565d; font-size: 13px; transition: color .2s ease; }
    .nav-links a:hover { color: var(--teal); }
    .nav-cta, .button {
      display: inline-flex; min-height: 44px; align-items: center; justify-content: center;
      padding: 0 19px; border: 1px solid var(--teal); border-radius: 5px;
      background: var(--teal); color: #fff; font-weight: 700; transition: transform .2s, background .2s, box-shadow .2s;
    }
    .nav-cta:hover, .button:hover { transform: translateY(-2px); background: var(--teal-dark); box-shadow: 0 8px 20px rgba(8, 126, 121, .18); }
    .button.secondary { background: transparent; color: var(--ink); border-color: #a8bbbc; }
    .button.secondary:hover { background: #edf5f3; box-shadow: none; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 5px; color: var(--ink); background: #fff; cursor: pointer; }
    .hero {
      position: relative; overflow: hidden; padding: 84px 0 54px;
      background: linear-gradient(112deg, #e4f4ee 0%, #f5f8e9 48%, #f8fafb 100%);
      border-bottom: 1px solid #dce8df;
    }
    .hero::after {
      content: ""; position: absolute; inset: auto -9% -150px 48%; height: 310px;
      border: 1px solid rgba(8,126,121,.17); border-radius: 50%;
      transform: rotate(-14deg); pointer-events: none;
    }
    .hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(260px, .85fr); align-items: center; gap: 52px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--teal-dark); font-size: 13px; font-weight: 800; letter-spacing: 0; }
    .eyebrow::before { content: ""; width: 23px; height: 2px; background: var(--coral); }
    h1 { max-width: 680px; margin: 17px 0 16px; font-size: clamp(38px, 5vw, 64px); line-height: 1.12; letter-spacing: 0; }
    .hero-copy { max-width: 650px; color: #435a60; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .hero-note { margin-top: 18px; color: #526a6e; font-size: 13px; }
    .hero-panel { position: relative; padding: 27px; border: 1px solid rgba(8,126,121,.2); background: rgba(255,255,255,.78); box-shadow: var(--shadow); }
    .hero-panel::before { content: ""; position: absolute; top: -7px; left: 22px; width: 54px; height: 4px; background: var(--lime); }
    .hero-panel h2 { margin: 0 0 8px; font-size: 19px; }
    .hero-panel p { margin: 0; color: var(--muted); font-size: 14px; }
    .signal-list { display: grid; gap: 0; margin-top: 18px; }
    .signal { display: flex; justify-content: space-between; gap: 12px; padding: 12px 0; border-top: 1px solid var(--line); font-size: 13px; }
    .signal strong { color: var(--teal-dark); }
    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 42px; border-top: 1px solid rgba(8,126,121,.18); }
    .metric { padding: 18px 16px 0 0; }
    .metric strong { display: block; font-size: 20px; }
    .metric span { color: var(--muted); font-size: 12px; }
    .section { padding: 76px 0; }
    .section.tint { background: #eef5f2; border-block: 1px solid #e0eae6; }
    .section.white { background: var(--white); }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
    .section-head > div { max-width: 710px; }
    .section-kicker { margin: 0 0 7px; color: var(--teal); font-size: 12px; font-weight: 800; }
    h2 { margin: 0; font-size: 31px; line-height: 1.25; letter-spacing: 0; }
    .section-intro { margin: 10px 0 0; color: var(--muted); }
    .text-link { color: var(--teal-dark); font-weight: 700; white-space: nowrap; }
    .intro-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 42px; align-items: start; }
    .intro-copy { color: #455960; }
    .intro-copy p { margin: 0 0 14px; }
    .capability-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 22px; border-top: 1px solid var(--line); }
    .capability-list div { padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
    .capability-list strong { display: block; margin-bottom: 3px; }
    .capability-list span { color: var(--muted); font-size: 12px; }
    .service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
    .service { padding: 20px 18px; border: 1px solid var(--line); border-top: 3px solid var(--teal); background: var(--white); transition: transform .2s, box-shadow .2s; }
    .service:hover, .quote:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
    .service:nth-child(4n+2) { border-top-color: var(--coral); }
    .service:nth-child(4n+3) { border-top-color: var(--blue); }
    .service:nth-child(4n) { border-top-color: #9bbd27; }
    .service h3 { margin: 0 0 7px; font-size: 16px; }
    .service p { margin: 0; color: var(--muted); font-size: 13px; }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 23px; }
    .tag-cloud span { padding: 6px 11px; border: 1px solid #d4e2df; background: #f8fbfa; color: #3d5c5c; font-size: 12px; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid #b8ceca; }
    .step { position: relative; padding: 23px 20px 0 0; }
    .step-num { display: inline-block; margin-bottom: 12px; color: var(--coral); font-size: 12px; font-weight: 800; }
    .step h3 { margin: 0 0 6px; font-size: 17px; }
    .step p { margin: 0; color: var(--muted); font-size: 13px; }
    .solution-band { display: grid; grid-template-columns: 1fr 1fr; gap: 38px; align-items: center; padding: 30px 0; border-bottom: 1px solid var(--line); }
    .solution-band:last-child { border-bottom: 0; }
    .solution-band h3 { margin: 0 0 8px; font-size: 20px; }
    .solution-band p { margin: 0; color: var(--muted); }
    .solution-points { display: flex; flex-wrap: wrap; gap: 8px; }
    .solution-points span { padding: 7px 10px; background: #e5f1ec; color: #315d56; font-size: 12px; }
    .network-strip { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px; }
    .network-item { padding: 18px 0; border-top: 2px solid var(--teal); }
    .network-item h3 { margin: 0 0 7px; font-size: 17px; }
    .network-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .case-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 16px; align-items: start; }
    .case { padding: 20px; background: #fff; border: 1px solid var(--line); }
    .case.featured { background: #e7f3ee; border-color: #cee2da; }
    .case h3 { margin: 0 0 9px; font-size: 17px; }
    .case p { margin: 0; color: var(--muted); font-size: 13px; }
    .media-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 22px; }
    .media-frame { overflow: hidden; background: #edf2ef; border: 1px solid var(--line); }
    .media-frame img { display: block; width: 100%; height: auto; }
    .media-square { width: min(230px, 100%); margin-top: 16px; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .quote { padding: 20px; background: #fff; border: 1px solid var(--line); transition: transform .2s, box-shadow .2s; }
    .quote p { margin: 0 0 17px; color: #43565c; font-size: 14px; }
    .quote footer { color: var(--teal-dark); font-size: 12px; font-weight: 700; }
    .rating-layout { display: grid; grid-template-columns: .7fr 1.3fr; gap: 35px; align-items: start; }
    .rating-score { padding: 24px; background: #e7f4ee; border-left: 4px solid var(--teal); }
    .rating-score strong { display: block; color: var(--teal-dark); font-size: 48px; line-height: 1.1; }
    .stars { color: #db8c27; letter-spacing: 0; font-size: 21px; }
    .rating-score p { margin: 8px 0 0; color: var(--muted); }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    table { width: 100%; border-collapse: collapse; min-width: 620px; text-align: left; }
    th, td { padding: 12px 14px; border-bottom: 1px solid var(--line); font-size: 13px; }
    th { background: #f0f5f3; color: #264b4a; }
    tr:last-child td { border-bottom: 0; }
    .good { color: var(--teal-dark); font-weight: 700; }
    .token-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: start; }
    .token-note { padding: 21px; background: #fff; border-left: 3px solid var(--coral); }
    .token-note h3 { margin: 0 0 8px; font-size: 17px; }
    .token-note p { margin: 0; color: var(--muted); font-size: 14px; }
    .price-list { border-top: 1px solid var(--line); }
    .price-row { display: flex; justify-content: space-between; gap: 15px; padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
    .price-row span:last-child { color: var(--muted); text-align: right; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 17px 0; cursor: pointer; list-style: none; font-weight: 700; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; color: var(--teal); font-size: 22px; font-weight: 400; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-item p { max-width: 850px; margin: -3px 0 17px; color: var(--muted); font-size: 14px; }
    .article-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
    .article-link { min-height: 105px; display: flex; 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 { border-color: var(--teal); transform: translateY(-3px); }
    .article-link span { font-size: 13px; font-weight: 700; }
    .article-link small { color: var(--teal); }
    .contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 40px; align-items: start; }
    .contact-details { border-top: 1px solid var(--line); }
    .contact-line { padding: 13px 0; border-bottom: 1px solid var(--line); }
    .contact-line strong { display: block; font-size: 13px; }
    .contact-line a, .contact-line span { color: var(--muted); font-size: 14px; }
    .contact-form { 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: 700; }
    .field input, .field select, .field textarea { width: 100%; border: 1px solid #cddbd9; border-radius: 3px; padding: 11px 12px; background: #fff; color: var(--ink); outline: none; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(8,126,121,.1); }
    .field textarea { min-height: 112px; resize: vertical; }
    .form-note { grid-column: 1 / -1; margin: 0; color: var(--muted); font-size: 12px; }
    .site-footer { padding: 30px 0; background: #e8efed; border-top: 1px solid #d6e0dd; color: #294047; }
    .footer-top { display: flex; align-items: start; justify-content: space-between; gap: 24px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 7px 18px; max-width: 650px; }
    .footer-links a { color: #3f5c60; font-size: 12px; }
    .footer-bottom { margin-top: 20px; padding-top: 13px; border-top: 1px solid #d1ddda; color: #52666a; font-size: 12px; }
    .floating { position: fixed; right: 18px; bottom: 20px; z-index: 15; display: grid; gap: 8px; }
    .floating a { display: flex; align-items: center; justify-content: center; min-width: 48px; min-height: 44px; padding: 0 12px; border: 1px solid #bcd4ce; background: #fff; color: var(--teal-dark); box-shadow: 0 5px 20px rgba(24,57,63,.12); font-size: 12px; font-weight: 700; }
    .floating a:hover { background: var(--teal); color: #fff; }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.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: 1000px) {
      .nav-links a { padding-inline: 7px; font-size: 12px; }
      .nav-cta { padding-inline: 13px; font-size: 13px; }
      .service-grid { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 760px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .nav-row { min-height: 64px; }
      .menu-toggle { display: inline-grid; place-items: center; margin-left: auto; }
      .nav-cta { display: none; }
      .nav-links { display: none; position: absolute; top: 64px; left: 0; right: 0; padding: 9px 16px 16px; background: var(--paper); border-bottom: 1px solid var(--line); box-shadow: 0 12px 18px rgba(23,43,53,.08); }
      .nav-links.open { display: grid; grid-template-columns: 1fr 1fr; }
      .nav-links a { padding: 10px; font-size: 14px; }
      .hero { padding: 58px 0 38px; }
      .hero-grid, .intro-layout, .rating-layout, .token-layout, .contact-grid { grid-template-columns: 1fr; gap: 27px; }
      .hero-grid { gap: 30px; }
      .hero-panel { max-width: 520px; }
      .metrics { grid-template-columns: 1fr 1fr; row-gap: 12px; }
      .section { padding: 57px 0; }
      .section-head { align-items: start; flex-direction: column; gap: 12px; }
      h2 { font-size: 27px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .workflow { grid-template-columns: 1fr 1fr; row-gap: 16px; }
      .solution-band { grid-template-columns: 1fr; gap: 14px; }
      .network-strip { grid-template-columns: 1fr; gap: 10px; }
      .case-grid { grid-template-columns: 1fr 1fr; }
      .case.featured { grid-column: 1 / -1; }
      .review-grid { grid-template-columns: 1fr 1fr; }
      .article-list { grid-template-columns: repeat(2, 1fr); }
      .footer-top { flex-direction: column; }
    }
    @media (max-width: 480px) {
      .container { width: calc(100% - 28px); }
      .brand { font-size: 16px; }
      .hero-actions .button { width: 100%; }
      .hero-copy { font-size: 15px; }
      .service-grid, .case-grid, .review-grid, .capability-list { grid-template-columns: 1fr; }
      .case.featured { grid-column: auto; }
      .workflow { grid-template-columns: 1fr 1fr; }
      .contact-form { grid-template-columns: 1fr; }
      .field.full, .form-note { grid-column: auto; }
      .media-pair { grid-template-columns: 1fr; }
      .article-list { grid-template-columns: 1fr 1fr; }
      .floating { right: 8px; bottom: 10px; }
      .floating a { min-width: 42px; padding-inline: 9px; }
    }