:root {
      color-scheme: light;
      --ink: #17243a;
      --muted: #617086;
      --line: #dce3ed;
      --paper: #f6f8fc;
      --white: #fff;
      --blue: #245de8;
      --cyan: #11aeb5;
      --coral: #f16b53;
      --lime: #d5f06d;
      --deep: #152442;
      --container: 1180px;
    }
    * { 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", system-ui, sans-serif;
      line-height: 1.65;
    }
    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; height: auto; }
    button, input, select, textarea { font: inherit; }
    button, a { -webkit-tap-highlight-color: transparent; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .topbar { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.94); border-bottom: 1px solid var(--line); backdrop-filter: blur(14px); }
    .nav { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .brand { display: inline-flex; align-items: center; gap: 10px; flex: 0 0 auto; font-weight: 800; }
    .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: #46556b; font-size: 13px; transition: color .2s ease; }
    .nav-links a:hover { color: var(--blue); }
    .nav-cta, .button { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 44px; padding: 0 19px; border: 0; border-radius: 5px; background: var(--blue); color: white; font-weight: 700; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
    .nav-cta:hover, .button:hover { transform: translateY(-2px); box-shadow: 0 9px 20px rgba(36,93,232,.22); background: #174bd0; }
    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 5px; background: white; color: var(--ink); }
    .hero { position: relative; overflow: hidden; padding: 76px 0 62px; background: #18314b; color: white; }
    .hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(112deg, #18314b 4%, #1e5870 53%, #2561d4 100%); }
    .hero::after { content: ""; position: absolute; width: 440px; height: 440px; right: -140px; top: -225px; border: 1px solid rgba(213,240,109,.34); border-radius: 50%; box-shadow: 0 0 0 42px rgba(213,240,109,.05), 0 0 0 88px rgba(213,240,109,.04); }
    .hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.3fr .7fr; align-items: center; gap: 56px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--lime); font-size: 13px; font-weight: 750; }
    .eyebrow::before { content: ""; width: 24px; height: 2px; background: currentColor; }
    h1 { max-width: 700px; margin: 17px 0; font-size: clamp(38px, 5vw, 66px); line-height: 1.12; }
    .hero-copy { max-width: 640px; margin: 0; color: #e0eaf2; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .button-light { background: var(--lime); color: #17243a; }
    .button-light:hover { background: #e2f89a; }
    .button-outline { border: 1px solid rgba(255,255,255,.45); background: transparent; color: white; }
    .button-outline:hover { background: rgba(255,255,255,.1); box-shadow: none; }
    .hero-note { margin-top: 18px; color: #d1dce6; font-size: 13px; }
    .hero-board { padding: 22px; border: 1px solid rgba(255,255,255,.27); background: rgba(9,27,44,.35); }
    .board-head { display: flex; justify-content: space-between; align-items: center; padding-bottom: 17px; border-bottom: 1px solid rgba(255,255,255,.2); font-size: 13px; }
    .live-mark { color: var(--lime); }
    .model-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 9px; padding-top: 16px; }
    .model-chip { padding: 10px 12px; border: 1px solid rgba(255,255,255,.19); color: white; font-size: 13px; }
    .model-chip:nth-child(3n + 1) { border-left: 3px solid var(--lime); }
    .board-foot { margin-top: 16px; color: #d6e4ee; font-size: 12px; }
    .quick-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 48px; background: rgba(255,255,255,.2); border: 1px solid rgba(255,255,255,.2); }
    .quick-stat { padding: 17px; background: rgba(15,41,61,.55); }
    .quick-stat strong { display: block; color: var(--lime); font-size: 19px; }
    .quick-stat span { color: #d5e1eb; font-size: 12px; }
    .section { padding: 76px 0; }
    .section-white { background: white; }
    .section-deep { background: #18314b; color: white; }
    .section-head { display: flex; justify-content: space-between; align-items: end; gap: 26px; margin-bottom: 30px; }
    .section-head h2 { margin: 5px 0 0; font-size: clamp(28px, 3.5vw, 40px); line-height: 1.2; }
    .section-head p { max-width: 520px; margin: 0; color: var(--muted); }
    .section-deep .section-head p { color: #c8d5e0; }
    .kicker { color: #d04e3c; font-size: 12px; font-weight: 800; text-transform: uppercase; }
    .intro-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 42px; align-items: start; }
    .intro-copy { color: #46556b; }
    .intro-copy p:first-child { margin-top: 0; }
    .intro-highlights { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 0 22px; border-top: 1px solid var(--line); }
    .highlight { padding: 17px 0; border-bottom: 1px solid var(--line); }
    .highlight strong { display: block; margin-bottom: 4px; }
    .highlight span { color: var(--muted); font-size: 13px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 14px; }
    .service { position: relative; padding: 23px; border: 1px solid var(--line); background: #fff; transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease; }
    .service:hover { transform: translateY(-4px); border-color: #a9c0f4; box-shadow: 0 12px 28px rgba(25,54,92,.09); }
    .service-index { color: var(--coral); font-size: 12px; font-weight: 800; }
    .service h3 { margin: 10px 0 7px; font-size: 19px; }
    .service p { margin: 0; color: var(--muted); font-size: 14px; }
    .tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
    .tag { padding: 6px 10px; border: 1px solid #cbd8e9; color: #374b64; font-size: 12px; }
    .workflow { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 0; border-top: 1px solid #9aabba; }
    .step { position: relative; padding: 25px 20px 0 0; }
    .step::before { content: ""; position: absolute; top: -5px; left: 0; width: 9px; height: 9px; background: var(--lime); border-radius: 50%; }
    .step-number { color: var(--lime); font-size: 12px; font-weight: 800; }
    .step h3 { margin: 7px 0; font-size: 18px; }
    .step p { margin: 0; color: #cbd7e2; font-size: 14px; }
    .solution-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
    .solution-column h3 { margin: 0 0 12px; font-size: 20px; }
    .solution-list { margin: 0; padding: 0; list-style: none; }
    .solution-list li { display: flex; justify-content: space-between; gap: 16px; padding: 13px 0; border-top: 1px solid var(--line); }
    .solution-list span { color: var(--muted); text-align: right; font-size: 13px; }
    .media-grid { display: grid; grid-template-columns: 1.1fr 1.1fr .8fr; gap: 14px; }
    .media-item { padding: 10px; border: 1px solid var(--line); background: white; }
    .media-item img { width: 100%; aspect-ratio: 16 / 9; object-fit: contain; background: #f0f3f8; }
    .media-item.square img { aspect-ratio: 1; }
    .media-item p { margin: 9px 2px 2px; color: var(--muted); font-size: 13px; }
    .metric-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 36px; align-items: start; }
    .rating-panel { padding: 26px; background: var(--lime); color: var(--ink); }
    .rating-panel small { font-weight: 800; }
    .rating { margin: 6px 0; font-size: 62px; font-weight: 850; line-height: 1; }
    .stars { color: #9b4b14; font-size: 22px; letter-spacing: 0; }
    .rating-panel p { margin: 12px 0 0; font-size: 13px; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); background: white; }
    table { width: 100%; border-collapse: collapse; min-width: 590px; }
    th, td { padding: 14px 15px; border-bottom: 1px solid var(--line); text-align: left; font-size: 13px; }
    th { background: #edf2f8; color: #31435b; }
    td:last-child { color: #174e9d; font-weight: 700; }
    .table-note { margin: 10px 0 0; color: var(--muted); font-size: 12px; }
    .reviews { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 13px; }
    .review { padding: 20px; border-top: 3px solid var(--cyan); background: white; }
    .review:nth-child(2n) { border-top-color: var(--coral); }
    .review p { margin: 0 0 15px; color: #46556b; font-size: 14px; }
    .review strong { display: block; font-size: 13px; }
    .review span { color: var(--muted); font-size: 12px; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item summary { position: relative; padding: 17px 35px 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; color: var(--blue); font-size: 21px; line-height: 1; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-item p { margin: -3px 35px 17px 0; color: var(--muted); font-size: 14px; }
    .article-grid { display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); gap: 11px; }
    .article-link { display: flex; min-height: 90px; align-items: end; padding: 14px; border: 1px solid var(--line); background: white; font-weight: 700; transition: border-color .2s ease, transform .2s ease; }
    .article-link:hover { transform: translateY(-3px); border-color: var(--blue); }
    .contact-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 40px; align-items: start; }
    .contact-copy { color: #d0dce7; }
    .contact-copy h2 { margin: 5px 0 15px; color: white; font-size: 36px; line-height: 1.2; }
    .contact-details { margin-top: 22px; }
    .contact-details p { margin: 7px 0; }
    .contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; padding: 22px; background: white; color: var(--ink); }
    .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%; min-height: 44px; padding: 10px 11px; border: 1px solid #cbd5e1; border-radius: 3px; background: white; color: var(--ink); }
    .field textarea { min-height: 108px; resize: vertical; }
    .contact-form .button { justify-self: start; }
    .footer { padding: 28px 0; background: #e8edf4; color: #314057; }
    .footer-top { display: flex; justify-content: space-between; align-items: center; gap: 20px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: 13px; }
    .footer-links a:hover { color: var(--blue); }
    .footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; margin-top: 19px; padding-top: 15px; border-top: 1px solid #cbd4df; color: #526176; font-size: 12px; }
    .floating { position: fixed; right: 18px; bottom: 20px; z-index: 15; display: grid; gap: 8px; }
    .floating a { display: grid; width: 48px; height: 48px; place-items: center; border: 1px solid var(--line); background: white; color: var(--ink); font-size: 12px; font-weight: 800; box-shadow: 0 5px 18px rgba(20,36,58,.12); }
    .floating a:hover { background: var(--lime); }
    .reveal { opacity: 0; transform: translateY(14px); 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: 900px) {
      .nav { flex-wrap: wrap; padding-block: 12px; }
      .menu-toggle { display: inline-grid; place-items: center; margin-left: auto; }
      .nav-cta { order: 3; }
      .nav-links { display: none; order: 4; width: 100%; justify-content: flex-start; padding: 7px 0; border-top: 1px solid var(--line); }
      .nav-links.open { display: flex; }
      .hero-inner { grid-template-columns: 1fr; gap: 30px; }
      .hero-board { max-width: 620px; }
      .metric-layout, .intro-grid, .contact-grid { grid-template-columns: 1fr; }
      .service-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
      .article-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
    }
    @media (max-width: 620px) {
      .container { width: min(var(--container), calc(100% - 28px)); }
      .nav { gap: 10px; }
      .brand img { width: 32px; }
      .brand { font-size: 14px; }
      .nav-cta { min-height: 39px; padding-inline: 12px; font-size: 12px; }
      .nav-links a { padding: 9px 10px; }
      .hero { padding: 55px 0 40px; }
      .hero-copy { font-size: 15px; }
      .quick-stats { grid-template-columns: repeat(2, 1fr); margin-top: 32px; }
      .section { padding: 55px 0; }
      .section-head { display: block; }
      .section-head p { margin-top: 12px; }
      .service-grid, .reviews, .solution-grid { grid-template-columns: 1fr; }
      .workflow { grid-template-columns: repeat(2, minmax(0,1fr)); row-gap: 24px; }
      .media-grid { grid-template-columns: 1fr 1fr; }
      .media-item.square { grid-column: 1 / -1; max-width: 220px; }
      .article-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
      .contact-form { grid-template-columns: 1fr; padding: 16px; }
      .field.full { grid-column: auto; }
      .footer-top, .footer-bottom { align-items: flex-start; flex-direction: column; }
      .rating { font-size: 52px; }
    }