:root {
      --ink: #211b35;
      --muted: #6f6882;
      --purple: #6d35d8;
      --purple-dark: #4e229e;
      --purple-soft: #eee8ff;
      --lilac: #f7f4ff;
      --line: #e5def4;
      --white: #fff;
      --cyan: #1c9eb2;
      --orange: #f18b45;
      --shadow: 0 18px 45px rgba(75, 36, 145, .12);
      --container: 1180px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: #fbfaff;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; height: auto; display: block; }
    button, input, select, textarea { font: inherit; }
    .container { width: min(var(--container), calc(100% - 40px)); margin: 0 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: 74px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }
    .brand { display: inline-flex; align-items: center; min-width: 156px; }
    .brand img { width: 132px; }
    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 0;
      flex-wrap: wrap;
    }
    .nav-links a {
      color: #554d6b;
      font-size: 13px;
      padding: 9px 10px;
      white-space: nowrap;
      transition: color .2s ease, background .2s ease;
    }
    .nav-links a:hover { color: var(--purple); background: var(--purple-soft); }
    .nav-cta, .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border: 0;
      border-radius: 7px;
      padding: 12px 19px;
      color: #fff;
      background: var(--purple);
      font-weight: 700;
      cursor: pointer;
      box-shadow: 0 8px 18px rgba(109,53,216,.22);
      transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
    }
    .nav-cta:hover, .button:hover { background: var(--purple-dark); transform: translateY(-2px); box-shadow: 0 12px 24px rgba(109,53,216,.28); }
    .menu-toggle {
      display: none;
      border: 1px solid var(--line);
      background: #fff;
      color: var(--purple-dark);
      border-radius: 6px;
      padding: 8px 11px;
      cursor: pointer;
    }
    .hero {
      position: relative;
      overflow: hidden;
      background: #f0eaff;
      border-bottom: 1px solid #ddd1fa;
    }
    .hero:before, .hero:after {
      content: "";
      position: absolute;
      pointer-events: none;
      border: 1px solid rgba(109,53,216,.2);
      transform: rotate(24deg);
    }
    .hero:before { width: 330px; height: 330px; right: 7%; top: -180px; border-radius: 46%; }
    .hero:after { width: 220px; height: 220px; right: 23%; bottom: -150px; border-radius: 50%; }
    .hero-grid {
      min-height: 600px;
      display: grid;
      grid-template-columns: 1.06fr .94fr;
      align-items: center;
      gap: 55px;
      position: relative;
      z-index: 1;
    }
    .eyebrow, .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--purple-dark);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .06em;
      text-transform: uppercase;
    }
    .eyebrow:before, .section-kicker:before {
      content: "";
      width: 26px;
      height: 3px;
      border-radius: 2px;
      background: var(--purple);
    }
    h1 {
      max-width: 700px;
      margin: 17px 0 18px;
      font-size: clamp(38px, 6vw, 68px);
      line-height: 1.12;
      letter-spacing: 0;
    }
    .hero-copy {
      max-width: 650px;
      color: #5e5576;
      font-size: 18px;
    }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .button.secondary {
      color: var(--purple-dark);
      background: #fff;
      border: 1px solid #d7c9f6;
      box-shadow: none;
    }
    .button.secondary:hover { background: var(--purple-soft); }
    .hero-note { margin-top: 18px; color: #776e8b; font-size: 13px; }
    .hero-visual { position: relative; min-height: 370px; display: grid; align-items: center; }
    .signal-board {
      position: relative;
      padding: 27px;
      border: 1px solid rgba(109,53,216,.26);
      background: rgba(255,255,255,.72);
      box-shadow: var(--shadow);
      border-radius: 12px;
    }
    .signal-board:before {
      content: "";
      position: absolute;
      width: 100px;
      height: 100px;
      border: 1px solid var(--purple);
      border-radius: 50%;
      top: -42px;
      right: -42px;
      opacity: .35;
    }
    .board-head { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--line); padding-bottom: 17px; }
    .board-title { font-size: 18px; font-weight: 800; }
    .live-dot { color: var(--cyan); font-size: 12px; }
    .frame-row { display: grid; grid-template-columns: repeat(5,1fr); gap: 9px; margin: 25px 0; }
    .frame { aspect-ratio: 1; border: 1px solid #d5c8f2; background: #f7f4ff; display: grid; place-items: center; color: var(--purple); font-weight: 800; border-radius: 5px; }
    .frame:nth-child(2), .frame:nth-child(4) { transform: translateY(10px); background: #e9deff; }
    .meter { margin-top: 17px; }
    .meter-line { display: flex; justify-content: space-between; font-size: 13px; color: var(--muted); }
    .meter-track { height: 9px; background: #e3daf5; border-radius: 10px; overflow: hidden; margin-top: 7px; }
    .meter-fill { height: 100%; width: 84%; background: var(--purple); border-radius: inherit; animation: grow 1.5s ease both; }
    @keyframes grow { from { width: 0; } to { width: 84%; } }
    .section { padding: 92px 0; }
    .section.tinted { background: #f3effd; border-top: 1px solid #ebe3fb; border-bottom: 1px solid #ebe3fb; }
    .section-head { max-width: 720px; margin-bottom: 38px; }
    h2 { margin: 12px 0 10px; font-size: clamp(28px, 4vw, 43px); line-height: 1.2; letter-spacing: 0; }
    h3 { margin: 0 0 9px; font-size: 20px; line-height: 1.35; }
    .lead { color: var(--muted); margin: 0; font-size: 17px; }
    .stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; margin-top: -34px; position: relative; z-index: 2; }
    .stat { padding: 22px; background: #fff; border: 1px solid var(--line); box-shadow: 0 12px 30px rgba(75,36,145,.08); border-radius: 8px; }
    .stat strong { display: block; color: var(--purple-dark); font-size: 31px; line-height: 1.2; }
    .stat span { color: var(--muted); font-size: 13px; }
    .intro-grid { display: grid; grid-template-columns: .86fr 1.14fr; gap: 50px; align-items: start; }
    .intro-copy p { color: var(--muted); }
    .pill-list { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 22px; }
    .pill { padding: 7px 12px; color: var(--purple-dark); border: 1px solid #d8caf7; background: #faf8ff; border-radius: 999px; font-size: 13px; }
    .feature-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 15px; }
    .feature { padding: 24px; border: 1px solid var(--line); background: #fff; border-radius: 8px; transition: transform .2s ease, box-shadow .2s ease; }
    .feature:hover, .service:hover, .case:hover, .quote:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
    .feature-index { color: var(--purple); font-size: 13px; font-weight: 800; margin-bottom: 17px; }
    .feature p, .service p, .case p, .quote p, .step p { color: var(--muted); font-size: 14px; margin: 0; }
    .service-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; }
    .service { padding: 23px; background: #fff; border: 1px solid var(--line); border-top: 3px solid var(--purple); border-radius: 7px; transition: transform .2s ease, box-shadow .2s ease; }
    .service .tag { display: inline-block; margin-bottom: 17px; color: var(--purple-dark); font-size: 12px; background: var(--purple-soft); padding: 4px 8px; border-radius: 4px; }
    .service p { min-height: 72px; }
    .service a { display: inline-block; margin-top: 17px; color: var(--purple-dark); font-weight: 700; font-size: 13px; }
    .workflow { display: grid; grid-template-columns: repeat(5,1fr); gap: 0; border-top: 1px solid #d9cef0; }
    .step { position: relative; padding: 28px 20px 5px 0; margin-right: 20px; }
    .step:before { content: ""; position: absolute; top: -7px; left: 0; width: 13px; height: 13px; border-radius: 50%; background: var(--purple); box-shadow: 0 0 0 5px #e8defa; }
    .step strong { display: block; margin-bottom: 12px; color: var(--purple-dark); font-size: 14px; }
    .solution-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 15px; }
    .solution { min-height: 164px; padding: 24px; background: #fff; border-left: 4px solid var(--cyan); border-radius: 4px; box-shadow: 0 8px 25px rgba(35,80,110,.07); }
    .solution p { color: var(--muted); font-size: 14px; margin: 0; }
    .network { display: grid; grid-template-columns: .8fr 1.2fr; gap: 45px; align-items: center; }
    .network-panel { padding: 27px; background: #281b4b; color: #fff; border-radius: 10px; }
    .network-panel h3 { color: #fff; }
    .network-panel p { color: #d7caef; }
    .model-cloud { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 20px; }
    .model-cloud span { color: #f5efff; border: 1px solid rgba(255,255,255,.25); padding: 6px 10px; border-radius: 5px; font-size: 13px; }
    .network-list { display: grid; grid-template-columns: repeat(2,1fr); gap: 13px; }
    .network-item { padding: 20px; background: #fff; border: 1px solid var(--line); }
    .network-item strong { display: block; color: var(--purple-dark); margin-bottom: 5px; }
    .network-item span { color: var(--muted); font-size: 13px; }
    .media-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
    .media-card { overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: 8px; }
    .media-card .media-image { background: #eee8ff; aspect-ratio: 16 / 7; overflow: hidden; }
    .media-card img { width: 100%; height: 100%; object-fit: cover; }
    .media-content { padding: 20px; }
    .media-content p { color: var(--muted); margin: 0; font-size: 14px; }
    .compare-wrap { overflow-x: auto; border: 1px solid var(--line); background: #fff; }
    table { width: 100%; min-width: 760px; border-collapse: collapse; }
    th, td { padding: 17px 18px; text-align: left; border-bottom: 1px solid var(--line); font-size: 14px; }
    th { background: #f0eaff; color: var(--purple-dark); }
    td:first-child { font-weight: 700; }
    .rating { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin-bottom: 24px; }
    .rating strong { color: var(--purple-dark); font-size: 40px; line-height: 1; }
    .stars { color: var(--orange); letter-spacing: 4px; font-size: 22px; }
    .rating small { color: var(--muted); }
    .pricing { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 15px; }
    .price { padding: 27px; background: #fff; border: 1px solid var(--line); border-radius: 8px; }
    .price.featured { border: 2px solid var(--purple); position: relative; }
    .price.featured:before { content: "推荐参考"; position: absolute; top: -13px; right: 20px; background: var(--purple); color: #fff; font-size: 12px; padding: 4px 10px; border-radius: 4px; }
    .price .cost { color: var(--purple-dark); font-size: 29px; font-weight: 800; margin: 10px 0; }
    .price p { color: var(--muted); font-size: 14px; }
    .price ul { padding-left: 18px; color: var(--muted); font-size: 14px; }
    .quotes { display: grid; grid-template-columns: repeat(3,1fr); gap: 15px; }
    .quote { padding: 23px; background: #fff; border: 1px solid var(--line); border-radius: 8px; transition: transform .2s ease, box-shadow .2s ease; }
    .quote p { font-size: 15px; color: #514a64; }
    .quote footer { margin-top: 20px; color: var(--purple-dark); font-size: 13px; font-weight: 700; }
    .cases { display: grid; grid-template-columns: repeat(3,1fr); gap: 15px; }
    .case { padding: 25px; background: #fff; border: 1px solid var(--line); border-radius: 8px; transition: transform .2s ease, box-shadow .2s ease; }
    .case small { color: var(--cyan); font-weight: 800; }
    .case p { margin-top: 12px; }
    .articles { display: grid; grid-template-columns: repeat(5,1fr); gap: 12px; }
    .article { padding: 18px; background: #fff; border: 1px solid var(--line); border-radius: 7px; }
    .article span { color: var(--purple); font-size: 12px; font-weight: 800; }
    .article h3 { font-size: 16px; margin-top: 10px; }
    .article:hover { border-color: var(--purple); }
    .faq-list { max-width: 900px; }
    details { background: #fff; border-bottom: 1px solid var(--line); padding: 0 20px; }
    details:first-child { border-top: 1px solid var(--line); }
    summary { cursor: pointer; list-style: none; padding: 20px 0; font-weight: 700; position: relative; padding-right: 30px; }
    summary::-webkit-details-marker { display: none; }
    summary:after { content: "+"; position: absolute; right: 0; color: var(--purple); font-size: 22px; top: 14px; }
    details[open] summary:after { content: "−"; }
    details p { margin: -7px 30px 20px 0; color: var(--muted); font-size: 14px; }
    .contact-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 35px; align-items: start; }
    .contact-panel { padding: 28px; background: #2b1c51; color: #fff; border-radius: 10px; }
    .contact-panel h2 { color: #fff; font-size: 31px; }
    .contact-panel p { color: #d8cfee; }
    .contact-item { padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.18); }
    .contact-item strong { display: block; color: #fff; font-size: 14px; }
    .contact-item span { color: #d8cfee; font-size: 14px; }
    .qr { width: 130px; margin-top: 20px; border: 5px solid #fff; }
    form { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; padding: 28px; background: #fff; border: 1px solid var(--line); }
    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    label { color: #4e4662; font-size: 13px; font-weight: 700; }
    input, select, textarea { width: 100%; border: 1px solid #d9d0ea; border-radius: 5px; padding: 12px 13px; color: var(--ink); background: #fcfbff; outline: none; }
    input:focus, select:focus, textarea:focus { border-color: var(--purple); box-shadow: 0 0 0 3px #eee8ff; }
    textarea { min-height: 125px; resize: vertical; }
    .form-submit { grid-column: 1 / -1; justify-self: start; }
    .join { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 25px; padding: 33px; background: #e9deff; border: 1px solid #d4c1fa; border-radius: 8px; }
    .join h2 { font-size: 31px; }
    .join p { color: var(--muted); margin: 0; }
    footer { background: #24183f; color: #eee7fb; padding: 48px 0 25px; }
    .footer-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 40px; padding-bottom: 35px; }
    footer .brand img {  }
    footer p { color: #c8badd; max-width: 390px; font-size: 14px; }
    .footer-links { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px 25px; align-content: start; }
    .footer-links a { color: #ded3ef; font-size: 13px; }
    .footer-links a:hover { color: #fff; }
    .footer-bottom { border-top: 1px solid rgba(255,255,255,.14); padding-top: 20px; color: #bcaed3; font-size: 12px; display: flex; justify-content: space-between; gap: 20px; }
    .float-help { position: fixed; right: 20px; bottom: 22px; z-index: 15; background: var(--purple); color: #fff; padding: 12px 15px; border-radius: 7px; box-shadow: 0 12px 25px rgba(57,25,125,.28); font-size: 13px; }
    .float-help:hover { background: var(--purple-dark); }
    .reveal { opacity: 0; transform: translateY(18px); transition: opacity .65s ease, transform .65s ease; }
    .reveal.show { opacity: 1; transform: none; }
    @media (max-width: 1000px) {
      .nav-links a { padding: 8px 6px; font-size: 12px; }
      .service-grid { grid-template-columns: repeat(3,1fr); }
      .articles { grid-template-columns: repeat(3,1fr); }
    }
    @media (max-width: 780px) {
      .container { width: min(var(--container), calc(100% - 28px)); }
      .nav { min-height: 66px; }
      .menu-toggle { display: block; }
      .nav-links { display: none; position: absolute; top: 66px; left: 0; right: 0; padding: 10px 14px 16px; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 15px 25px rgba(43,28,81,.1); }
      .nav-links.open { display: grid; grid-template-columns: repeat(2,1fr); }
      .nav-links a { padding: 10px; }
      .nav-cta { display: none; }
      .hero-grid, .intro-grid, .network, .contact-grid { grid-template-columns: 1fr; gap: 30px; }
      .hero-grid { min-height: auto; padding: 75px 0 95px; }
      .hero-visual { min-height: auto; }
      .stats { grid-template-columns: repeat(2,1fr); margin-top: -48px; }
      .feature-grid, .solution-grid, .quotes, .cases { grid-template-columns: repeat(2,1fr); }
      .service-grid { grid-template-columns: repeat(2,1fr); }
      .workflow { grid-template-columns: 1fr; border-top: 0; border-left: 1px solid #d9cef0; margin-left: 7px; }
      .step { padding: 0 0 25px 25px; margin: 0; }
      .step:before { top: 3px; left: -7px; }
      .pricing { grid-template-columns: 1fr; }
      .articles { grid-template-columns: repeat(2,1fr); }
      .join { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
    }
    @media (max-width: 500px) {
      h1 { font-size: 39px; }
      .section { padding: 65px 0; }
      .feature-grid, .solution-grid, .quotes, .cases, .service-grid, .articles, .media-grid { grid-template-columns: 1fr; }
      .stats { gap: 9px; }
      .stat { padding: 16px; }
      .stat strong { font-size: 25px; }
      form { grid-template-columns: 1fr; padding: 20px; }
      .field.full, .form-submit { grid-column: auto; }
      .footer-links { grid-template-columns: repeat(2,1fr); }
      .footer-bottom { display: block; }
      .footer-bottom span { display: block; margin-top: 8px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *:before, *:after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
      .reveal { opacity: 1; transform: none; }
    }