:root {
      color-scheme: light;
      --ink: #182333;
      --muted: #596779;
      --line: #dfe6ee;
      --paper: #f7f9fc;
      --white: #fff;
      --blue: #1769e0;
      --cyan: #00a9b7;
      --coral: #f16d54;
      --lime: #e8f7b8;
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 86px; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
      line-height: 1.65;
    }
    a { color: inherit; }
    button, input, select, textarea { font: inherit; }
    img { display: block; 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(255,255,255,.95);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(14px);
    }
    .nav-row { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; white-space: nowrap; }
    .brand img { width: 38px; max-height: 40px; object-fit: contain; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 0; }
    .nav-links a { padding: 8px 10px; color: #364457; text-decoration: none; font-size: 13px; }
    .nav-links a:hover { color: var(--blue); }
    .nav-cta, .button {
      display: inline-flex; align-items: center; justify-content: center; gap: 8px;
      min-height: 44px; padding: 10px 17px; border: 0; border-radius: 5px;
      background: var(--blue); color: #fff; text-decoration: none; font-weight: 700;
      transition: transform .18s ease, background .18s ease, box-shadow .18s ease;
    }
    .nav-cta:hover, .button:hover { transform: translateY(-2px); background: #0e54bd; box-shadow: 0 8px 20px rgba(23,105,224,.2); }
    .button.secondary { color: var(--ink); background: #fff; border: 1px solid #cbd6e2; }
    .button.secondary:hover { background: #f0f5fb; }
    .menu-toggle { display: none; border: 1px solid var(--line); background: #fff; color: var(--ink); padding: 8px 12px; border-radius: 4px; }
    .hero {
      overflow: hidden; position: relative;
      background: linear-gradient(118deg, #e7f7ff 0%, #f4fbff 43%, #fff4e9 100%);
      border-bottom: 1px solid #d8e8f0;
    }
    .hero::before {
      content: ""; position: absolute; width: 430px; height: 430px; right: -100px; top: -210px;
      border: 1px solid rgba(0,169,183,.25); border-radius: 50%;
      box-shadow: 0 0 0 42px rgba(0,169,183,.05), 0 0 0 86px rgba(23,105,224,.035);
      animation: drift 12s ease-in-out infinite alternate;
    }
    .hero-inner { position: relative; padding: 74px 0 44px; }
    .hero-copy { max-width: 790px; }
    .eyebrow { margin: 0 0 14px; color: #087d8e; font-size: 13px; font-weight: 800; letter-spacing: 0; }
    h1 { max-width: 780px; margin: 0; font-size: clamp(38px, 6vw, 66px); line-height: 1.12; letter-spacing: 0; }
    .hero-copy > p:not(.eyebrow) { max-width: 690px; color: #46566a; font-size: 18px; margin: 20px 0 25px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-proof { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 28px; color: #43546a; font-size: 13px; }
    .hero-proof span::before { content: "✓"; margin-right: 7px; color: #008c83; font-weight: 900; }
    .metric-strip { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; margin-top: 54px; border-top: 1px solid rgba(24,35,51,.13); }
    .metric { padding: 20px 18px 0 0; }
    .metric strong { display: block; font-size: 20px; }
    .metric span { color: var(--muted); font-size: 13px; }
    .band { padding: 72px 0; }
    .band.white { background: var(--white); }
    .section-head { max-width: 730px; margin-bottom: 30px; }
    .section-kicker { margin: 0 0 7px; color: #087d8e; font-size: 12px; font-weight: 800; }
    h2 { margin: 0; font-size: clamp(27px, 4vw, 38px); line-height: 1.22; letter-spacing: 0; }
    .section-head > p:last-child { color: var(--muted); margin: 13px 0 0; }
    .intro-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: start; }
    .intro-copy p { margin: 0 0 15px; color: #46566a; }
    .principles { border-left: 3px solid var(--cyan); padding: 4px 0 4px 20px; }
    .principles strong { display: block; margin-bottom: 9px; }
    .principles ul { padding-left: 19px; margin: 0; color: var(--muted); }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
    .service-item { min-width: 0; padding: 21px; background: #fff; border: 1px solid var(--line); border-top: 3px solid var(--cyan); transition: transform .2s ease, box-shadow .2s ease; }
    .service-item:nth-child(3n+2) { border-top-color: var(--coral); }
    .service-item:nth-child(3n) { border-top-color: var(--blue); }
    .service-item:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(30,56,85,.08); }
    .service-item h3 { margin: 0 0 7px; font-size: 17px; }
    .service-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
    .tag-list span { padding: 6px 10px; color: #27465b; background: #e5f6f3; border-radius: 3px; font-size: 13px; }
    .workflow { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; counter-reset: flow; }
    .flow-step { padding: 18px 0 0; border-top: 2px solid #8fd6d4; counter-increment: flow; }
    .flow-step::before { content: "0" counter(flow); display: block; color: var(--blue); font-size: 13px; font-weight: 800; }
    .flow-step h3 { margin: 7px 0 5px; font-size: 17px; }
    .flow-step p { color: var(--muted); margin: 0; font-size: 14px; }
    .solution-band { background: linear-gradient(110deg, #e6f7f2, #eef5ff 62%, #fff5e9); }
    .solution-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: center; }
    .solution-copy p { color: #46566a; }
    .solution-copy ul { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 20px; padding-left: 20px; color: #34485b; }
    .asset-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .asset-row img { width: 100%; aspect-ratio: 16/9; object-fit: cover; border-radius: 4px; }
    .asset-row .portrait { grid-column: 1 / -1; width: min(48%, 260px); aspect-ratio: 1; }
    .industry-list { display: grid; grid-template-columns: repeat(4,1fr); gap: 10px; }
    .industry-list div { padding: 15px; background: #fff; border: 1px solid var(--line); font-weight: 700; }
    .network { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: start; }
    .network-note { padding: 22px; background: #eaf6f6; border-left: 3px solid var(--cyan); }
    .network-note p { margin: 0; color: #43566b; }
    .platforms { display: flex; flex-wrap: wrap; gap: 8px; }
    .platforms span { padding: 7px 10px; background: #fff; border: 1px solid var(--line); color: #37475b; font-size: 13px; }
    .compare-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: 13px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
    th { background: #edf5fa; font-size: 13px; }
    td { color: #46566a; font-size: 14px; }
    td:first-child { color: var(--ink); font-weight: 700; }
    .rating-row { display: flex; align-items: center; flex-wrap: wrap; gap: 15px; margin-bottom: 18px; }
    .rating-score { font-size: 32px; font-weight: 850; color: #174fa9; }
    .stars { color: #c76b12; letter-spacing: 0; font-size: 19px; }
    .rating-caption { color: var(--muted); font-size: 13px; }
    .token-box { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 25px; background: #fff; border: 1px solid var(--line); }
    .token-box h3 { margin: 0 0 6px; }
    .token-box p { color: var(--muted); margin: 0; }
    .reviews { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
    .review { padding: 19px; border: 1px solid var(--line); background: #fff; }
    .review blockquote { margin: 0 0 14px; color: #435367; font-size: 14px; }
    .review cite { color: #182333; font-size: 13px; font-style: normal; font-weight: 750; }
    .case-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
    .case { padding: 22px; background: #fff; border: 1px solid var(--line); }
    .case .case-type { color: #087d8e; font-size: 12px; font-weight: 800; }
    .case h3 { margin: 6px 0; font-size: 18px; }
    .case p { margin: 0; color: var(--muted); font-size: 14px; }
    .faq-list { border-top: 1px solid var(--line); }
    details { border-bottom: 1px solid var(--line); padding: 15px 0; }
    summary { cursor: pointer; font-weight: 700; list-style: none; display: flex; justify-content: space-between; gap: 20px; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; color: var(--blue); font-size: 20px; line-height: 1; }
    details[open] summary::after { content: "−"; }
    details p { margin: 10px 28px 0 0; color: var(--muted); font-size: 14px; }
    .article-links { display: grid; grid-template-columns: repeat(2,1fr); gap: 0 25px; border-top: 1px solid var(--line); }
    .article-links a { display: flex; justify-content: space-between; gap: 14px; padding: 15px 0; border-bottom: 1px solid var(--line); text-decoration: none; }
    .article-links a span:last-child { color: var(--blue); }
    .contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; align-items: start; }
    .contact-list { padding: 0; list-style: none; }
    .contact-list li { margin: 10px 0; color: #435367; overflow-wrap: anywhere; }
    .contact-list a { color: #135ebf; }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1/-1; }
    label { font-size: 13px; font-weight: 700; }
    input, select, textarea { width: 100%; padding: 11px 12px; border: 1px solid #cbd6e2; border-radius: 3px; background: #fff; color: var(--ink); }
    textarea { min-height: 120px; resize: vertical; }
    .form-footnote { color: var(--muted); font-size: 12px; }
    .join-band { background: #edf6f5; }
    .join-inner { display: flex; align-items: center; justify-content: space-between; gap: 22px; }
    .join-inner p { max-width: 650px; margin: 9px 0 0; color: var(--muted); }
    .site-footer { padding: 27px 0; background: #e8edf3; color: #263649; border-top: 1px solid #d3dce6; }
    .footer-row { display: flex; justify-content: space-between; align-items: center; gap: 18px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 16px; }
    .footer-links a { color: #334d67; font-size: 13px; text-decoration: none; }
    .copyright { color: #58677a; font-size: 12px; }
    .float-contact { position: fixed; right: 18px; bottom: 20px; z-index: 15; }
    .float-contact a { display: block; padding: 12px 15px; border-radius: 4px; color: #fff; background: #1769e0; box-shadow: 0 5px 18px rgba(23,105,224,.24); text-decoration: none; font-weight: 700; }
    .to-top { position: fixed; right: 20px; bottom: 78px; z-index: 15; display: none; width: 40px; height: 40px; border: 1px solid #cbd6e2; border-radius: 4px; color: var(--ink); background: #fff; cursor: pointer; }
    .to-top.visible { display: block; }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.in-view { opacity: 1; transform: none; }
    @keyframes drift { to { transform: translate(-20px, 22px) rotate(12deg); } }
    @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: 920px) {
      .nav-links { display: none; position: absolute; top: 73px; left: 0; right: 0; padding: 12px 20px 18px; background: #fff; border-bottom: 1px solid var(--line); justify-content: flex-start; }
      .nav-links.open { display: flex; }
      .menu-toggle { display: inline-flex; }
      .nav-row { gap: 12px; }
      .nav-actions { display: flex; align-items: center; gap: 8px; }
      .service-grid { grid-template-columns: repeat(2,1fr); }
    }
    @media (max-width: 650px) {
      .container { width: min(var(--container), calc(100% - 30px)); }
      .hero-inner { padding: 55px 0 30px; }
      .hero-copy > p:not(.eyebrow) { font-size: 16px; }
      .metric-strip { grid-template-columns: repeat(2,1fr); row-gap: 17px; margin-top: 35px; }
      .band { padding: 53px 0; }
      .intro-grid, .solution-grid, .network, .contact-grid { grid-template-columns: 1fr; gap: 24px; }
      .service-grid, .reviews, .case-grid { grid-template-columns: 1fr; }
      .workflow { grid-template-columns: repeat(2,1fr); }
      .industry-list { grid-template-columns: repeat(2,1fr); }
      .solution-copy ul { grid-template-columns: 1fr; }
      .article-links { grid-template-columns: 1fr; }
      .token-box, .join-inner { align-items: flex-start; flex-direction: column; }
      .footer-row { align-items: flex-start; flex-direction: column; }
      .form-grid { grid-template-columns: 1fr; }
      .field.full { grid-column: auto; }
      .brand img { width: 32px; }
      .nav-cta { min-height: 39px; padding: 8px 10px; font-size: 12px; }
      .nav-links { max-height: calc(100vh - 74px); overflow: auto; }
    }