:root {
      color-scheme: dark;
      --bg: #100d19;
      --bg-soft: #171222;
      --panel: #1d172b;
      --panel-light: #241b35;
      --ink: #f5f0fa;
      --muted: #b8adc6;
      --pink: #ff5ca8;
      --violet: #b08aff;
      --cyan: #77e3dc;
      --line: rgba(231, 215, 255, .15);
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 84px; }
    body {
      margin: 0;
      background: var(--bg);
      color: var(--ink);
      font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
    }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    button, a, summary { -webkit-tap-highlight-color: transparent; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      z-index: 20;
      top: 0;
      border-bottom: 1px solid var(--line);
      background: rgba(16, 13, 25, .94);
      backdrop-filter: blur(16px);
    }
    .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: 0 0 auto; font-weight: 750; letter-spacing: 0; }
    .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: 9px 11px; color: #d5ccdf; font-size: 13px; transition: color .2s ease; }
    .nav-links a:hover, .nav-links a:focus-visible { color: var(--pink); }
    .nav-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
    .menu-toggle { display: none; border: 1px solid var(--line); background: var(--panel); color: var(--ink); padding: 8px 12px; cursor: pointer; }
    .button {
      min-height: 44px; display: inline-flex; align-items: center; justify-content: center;
      gap: 8px; padding: 10px 18px; border: 1px solid transparent; border-radius: 4px;
      color: #190f20; background: var(--pink); font-weight: 750; transition: transform .2s ease, filter .2s ease, box-shadow .2s ease;
    }
    .button:hover { transform: translateY(-2px); filter: brightness(1.08); box-shadow: 0 8px 26px rgba(255, 92, 168, .2); }
    .button-outline { color: var(--ink); background: transparent; border-color: rgba(255,255,255,.28); }
    .button-small { min-height: 38px; padding: 7px 14px; font-size: 13px; }
    .hero {
      overflow: hidden;
      position: relative;
      background:
        linear-gradient(118deg, rgba(255, 92, 168, .12), transparent 43%),
        linear-gradient(305deg, rgba(176, 138, 255, .15), transparent 48%),
        #100d19;
      border-bottom: 1px solid var(--line);
    }
    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      pointer-events: none;
      opacity: .24;
      background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
      background-size: 48px 48px;
      mask-image: linear-gradient(to bottom, black, transparent 92%);
    }
    .hero-inner { position: relative; display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(270px, .7fr); gap: 54px; align-items: center; padding-block: 74px 66px; }
    .eyebrow { color: var(--cyan); font-size: 12px; font-weight: 800; letter-spacing: 1.5px; text-transform: uppercase; }
    h1 { max-width: 740px; margin: 13px 0 18px; font-size: clamp(38px, 5vw, 64px); line-height: 1.12; letter-spacing: 0; }
    .hero h1 span { color: var(--pink); }
    .hero-copy { max-width: 650px; margin: 0; color: #d2c8dd; font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .hero-note { margin-top: 20px; color: var(--muted); font-size: 13px; }
    .hero-console { border: 1px solid rgba(255,255,255,.17); background: rgba(28, 22, 41, .76); padding: 24px; box-shadow: 14px 14px 0 rgba(255,92,168,.1); }
    .console-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding-bottom: 18px; border-bottom: 1px solid var(--line); font-size: 13px; }
    .console-head strong { font-size: 15px; }
    .live-mark { display: inline-flex; align-items: center; gap: 7px; color: var(--cyan); font-size: 12px; }
    .live-mark::before { content: ""; width: 7px; height: 7px; background: var(--cyan); border-radius: 50%; box-shadow: 0 0 12px var(--cyan); }
    .console-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 17px; }
    .console-item { min-height: 82px; padding: 13px; border: 1px solid var(--line); background: rgba(255,255,255,.025); }
    .console-item b { display: block; color: var(--pink); font-size: 14px; }
    .console-item span { color: var(--muted); font-size: 12px; }
    .console-foot { margin-top: 18px; color: var(--muted); font-size: 12px; }
    .trust-strip { border-bottom: 1px solid var(--line); background: #151120; }
    .metric-row { display: grid; grid-template-columns: repeat(4, 1fr); }
    .metric { padding: 21px 18px; border-right: 1px solid var(--line); }
    .metric:first-child { border-left: 1px solid var(--line); }
    .metric strong { display: block; color: var(--ink); font-size: 20px; }
    .metric span { color: var(--muted); font-size: 12px; }
    .section { padding-block: 74px; }
    .section-tint { background: var(--bg-soft); border-block: 1px solid rgba(231,215,255,.08); }
    .section-head { display: flex; justify-content: space-between; align-items: end; gap: 28px; margin-bottom: 30px; }
    .section-head > div { max-width: 720px; }
    .section-kicker { display: block; margin-bottom: 7px; color: var(--pink); font-size: 12px; font-weight: 800; letter-spacing: 1.3px; }
    h2 { margin: 0; font-size: clamp(27px, 3.4vw, 40px); line-height: 1.2; letter-spacing: 0; }
    .section-head p, .intro-copy { color: var(--muted); margin: 12px 0 0; }
    .text-link { color: var(--cyan); font-weight: 700; white-space: nowrap; }
    .intro-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 38px; align-items: start; }
    .intro-copy p { margin: 0 0 15px; }
    .capability-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 22px; border-top: 1px solid var(--line); }
    .capability-list div { padding: 14px 0; border-bottom: 1px solid var(--line); }
    .capability-list strong { display: block; font-size: 14px; }
    .capability-list span { color: var(--muted); font-size: 12px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .service-card { padding: 22px; border: 1px solid var(--line); background: var(--panel); transition: transform .22s ease, border-color .22s ease, background .22s ease; }
    .service-card:hover { transform: translateY(-4px); border-color: rgba(255,92,168,.55); background: var(--panel-light); }
    .service-card .index { color: var(--cyan); font-size: 11px; font-weight: 800; letter-spacing: 1px; }
    .service-card h3 { margin: 8px 0 8px; font-size: 18px; }
    .service-card p { margin: 0; color: var(--muted); font-size: 13px; }
    .toolset { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 24px; }
    .toolset span { padding: 7px 11px; border: 1px solid var(--line); color: #e0d7e9; font-size: 12px; }
    .product-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
    .product { display: grid; grid-template-columns: minmax(0, 1fr) minmax(130px, .55fr); align-items: center; gap: 20px; padding: 15px; border: 1px solid var(--line); background: var(--panel); }
    .product h3 { margin: 0 0 8px; font-size: 19px; }
    .product p { margin: 0; color: var(--muted); font-size: 13px; }
    .media-frame { margin: 0; overflow: hidden; background: #211a2d; }
    .media-frame img { display: block; width: 100%; height: auto; max-width: 100%; object-fit: contain; }
    .product-square { grid-template-columns: minmax(0, 1fr) 128px; }
    .product-square .media-frame { width: 128px; aspect-ratio: 1; }
    .product-square .media-frame img { width: 100%; height: 100%; object-fit: cover; }
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .step { padding: 22px 18px 24px; border-right: 1px solid var(--line); }
    .step:last-child { border-right: 0; }
    .step b { display: block; margin-bottom: 13px; color: var(--pink); font-size: 12px; letter-spacing: 1px; }
    .step h3 { margin: 0 0 7px; font-size: 17px; }
    .step p { margin: 0; color: var(--muted); font-size: 13px; }
    .solution-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 25px; border-top: 1px solid var(--line); }
    .solution { padding: 18px 0; border-bottom: 1px solid var(--line); }
    .solution h3 { margin: 0 0 5px; font-size: 16px; }
    .solution p { margin: 0; color: var(--muted); font-size: 13px; }
    .network-band { display: grid; grid-template-columns: 1fr 1fr 1fr; border: 1px solid var(--line); }
    .network-item { padding: 24px; border-right: 1px solid var(--line); }
    .network-item:last-child { border-right: 0; }
    .network-item h3 { margin: 0 0 8px; font-size: 17px; }
    .network-item p { margin: 0; color: var(--muted); font-size: 13px; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; }
    .review { margin: 0; padding: 21px; background: var(--panel); border-left: 2px solid var(--violet); }
    .stars { color: #ffc46b; letter-spacing: 2px; }
    .review blockquote { margin: 12px 0 17px; color: #e3dce9; font-size: 14px; }
    .review figcaption { color: var(--muted); font-size: 12px; }
    .case-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
    .case { min-height: 142px; display: flex; flex-direction: column; justify-content: space-between; padding: 18px; border: 1px solid var(--line); background: linear-gradient(145deg, rgba(176,138,255,.11), transparent 60%), var(--panel); }
    .case span { color: var(--cyan); font-size: 11px; }
    .case strong { font-size: 16px; }
    .case p { margin: 4px 0 0; color: var(--muted); font-size: 12px; }
    .score-panel { display: flex; align-items: center; gap: 27px; margin-bottom: 22px; padding: 22px; border: 1px solid rgba(255,92,168,.4); background: linear-gradient(105deg, rgba(255,92,168,.12), rgba(176,138,255,.06)); }
    .score { color: var(--pink); font-size: 45px; font-weight: 850; line-height: 1; }
    .score small { color: var(--muted); font-size: 15px; }
    .score-details strong { display: block; font-size: 16px; }
    .score-details span { color: #ffc46b; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); }
    table { width: 100%; min-width: 700px; border-collapse: collapse; text-align: left; }
    th, td { padding: 14px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
    th { color: var(--cyan); background: #1a1526; font-size: 13px; }
    td { color: #ddd4e6; font-size: 13px; }
    tr:last-child td { border-bottom: 0; }
    .match-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 38px; align-items: start; }
    .match-copy { padding-top: 8px; }
    .match-copy p { color: var(--muted); }
    .match-points { padding: 0; margin: 18px 0 0; list-style: none; }
    .match-points li { padding: 9px 0; border-bottom: 1px solid var(--line); color: #e2dae9; font-size: 13px; }
    .form-box { padding: 23px; border: 1px solid var(--line); background: var(--panel); }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
    .field { display: grid; gap: 6px; }
    .field-wide { grid-column: 1 / -1; }
    .field label { color: #e5ddeb; font-size: 13px; }
    .field input, .field select, .field textarea {
      width: 100%; min-height: 43px; padding: 10px 12px; border: 1px solid rgba(231,215,255,.22);
      border-radius: 2px; background: #120f1b; color: var(--ink); outline: none;
    }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: var(--pink); }
    .field textarea { min-height: 112px; resize: vertical; }
    .form-submit { margin-top: 16px; }
    .price-note { padding: 20px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); color: var(--muted); }
    .price-note strong { color: var(--ink); }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-list details { border-bottom: 1px solid var(--line); }
    .faq-list summary { position: relative; padding: 16px 32px 16px 0; cursor: pointer; list-style: none; font-weight: 700; }
    .faq-list summary::-webkit-details-marker { display: none; }
    .faq-list summary::after { content: "+"; position: absolute; right: 4px; color: var(--pink); font-size: 20px; }
    .faq-list details[open] summary::after { content: "−"; }
    .faq-list details p { margin: 0; padding: 0 30px 16px 0; color: var(--muted); font-size: 14px; }
    .article-links { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; }
    .article-links a { min-height: 76px; display: flex; align-items: center; padding: 14px; border: 1px solid var(--line); background: var(--panel); color: #e5ddeb; font-size: 13px; transition: border-color .2s ease; }
    .article-links a:hover { border-color: var(--cyan); }
    .contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 38px; }
    .contact-details { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; align-content: start; }
    .contact-item { padding: 14px 0; border-bottom: 1px solid var(--line); }
    .contact-item span { display: block; color: var(--muted); font-size: 12px; }
    .contact-item a, .contact-item strong { font-size: 14px; }
    .qr { grid-column: 1 / -1; width: 142px; margin-top: 20px; }
    .qr img { display: block; width: 100%; height: auto; }
    .partner-row { display: flex; flex-wrap: wrap; gap: 9px 20px; padding-top: 20px; border-top: 1px solid var(--line); }
    .partner-row a { color: #d8c9e7; font-size: 13px; }
    .partner-row a:hover { color: var(--pink); }
    .site-footer { padding: 23px 0; border-top: 1px solid var(--line); background: #0d0b14; color: #c8becf; font-size: 12px; }
    .footer-row { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
    .footer-row p { margin: 0; }
    .float-contact, .to-top {
      position: fixed; z-index: 15; right: 18px; width: 48px; height: 48px; display: grid; place-items: center;
      border: 1px solid var(--line); background: #211a2d; color: var(--ink); box-shadow: 0 8px 25px rgba(0,0,0,.25);
    }
    .float-contact { bottom: 78px; color: var(--cyan); font-size: 12px; font-weight: 800; }
    .to-top { right: 18px; bottom: 20px; cursor: pointer; font-size: 20px; }
    .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: 980px) {
      .nav-row { gap: 12px; }
      .nav-links a { padding-inline: 7px; font-size: 12px; }
      .nav-actions .button-outline { display: none; }
      .hero-inner { gap: 30px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .case-grid { grid-template-columns: repeat(2, 1fr); }
      .article-links { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 740px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .nav-row { min-height: 64px; }
      .brand img { width: 32px; max-height: 32px; }
      .menu-toggle { display: inline-flex; align-items: center; gap: 7px; }
      .nav-links {
        display: none; position: absolute; top: 64px; left: 0; right: 0; padding: 10px 16px 16px;
        border-bottom: 1px solid var(--line); background: #151120; align-items: stretch; flex-direction: column;
      }
      .nav-links.is-open { display: flex; }
      .nav-links a { padding: 10px 4px; border-bottom: 1px solid rgba(231,215,255,.08); font-size: 14px; }
      .nav-actions .button-small { display: none; }
      .hero-inner { grid-template-columns: 1fr; padding-block: 56px 44px; }
      .hero-console { max-width: 480px; }
      .metric-row { grid-template-columns: 1fr 1fr; }
      .metric:nth-child(3) { border-left: 1px solid var(--line); }
      .metric:nth-child(n+3) { border-top: 1px solid var(--line); }
      .section { padding-block: 55px; }
      .section-head { align-items: start; flex-direction: column; gap: 14px; }
      .intro-grid, .match-layout, .contact-grid { grid-template-columns: 1fr; gap: 24px; }
      .steps { grid-template-columns: 1fr 1fr; }
      .step:nth-child(2) { border-right: 0; }
      .step:nth-child(n+3) { border-top: 1px solid var(--line); }
      .solution-grid { grid-template-columns: 1fr 1fr; }
      .network-band { grid-template-columns: 1fr; }
      .network-item { border-right: 0; border-bottom: 1px solid var(--line); }
      .network-item:last-child { border-bottom: 0; }
      .review-grid { grid-template-columns: 1fr 1fr; }
      .article-links { grid-template-columns: 1fr 1fr; }
      .footer-row { align-items: flex-start; flex-direction: column; }
    }
    @media (max-width: 480px) {
      .hero-inner { padding-top: 44px; }
      .hero-copy { font-size: 15px; }
      .hero-actions .button { flex: 1 1 100%; }
      .service-grid, .review-grid { grid-template-columns: 1fr; }
      .product-grid { grid-template-columns: 1fr; }
      .product { grid-template-columns: minmax(0, 1fr) 110px; gap: 12px; }
      .product-square { grid-template-columns: minmax(0, 1fr) 94px; }
      .product-square .media-frame { width: 94px; }
      .capability-list { grid-template-columns: 1fr; }
      .steps, .solution-grid { grid-template-columns: 1fr; }
      .step { border-right: 0; border-bottom: 1px solid var(--line); }
      .step:nth-child(n+2) { border-top: 0; }
      .step:last-child { border-bottom: 0; }
      .case-grid { grid-template-columns: 1fr 1fr; }
      .score-panel { align-items: flex-start; gap: 15px; }
      .score { font-size: 38px; }
      .form-grid { grid-template-columns: 1fr; }
      .field-wide { grid-column: auto; }
      .contact-details { grid-template-columns: 1fr; }
      .qr { grid-column: auto; }
      .article-links { grid-template-columns: 1fr; }
    }