:root {
      --ink: #20252b;
      --muted: #667079;
      --paper: #f6f3ea;
      --white: #fffdf8;
      --line: #d9d6ca;
      --blue: #2057d4;
      --yellow: #f5c84b;
      --coral: #ed6a55;
      --mint: #7bcbb5;
      --purple: #8065c9;
      --dark: #222b35;
      --shadow: 0 16px 38px rgba(32,37,43,.10);
      --container: 1180px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: "PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;
      line-height: 1.7;
      letter-spacing: 0;
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; height: auto; display: block; }
    .container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(246,243,234,.95);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(12px);
    }
    .nav-wrap {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 170px;
      font-weight: 800;
      font-size: 18px;
    }
    .ai-page-logo { width: 44px; }
    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 0;
      flex-wrap: wrap;
    }
    .nav-links a {
      padding: 9px 10px;
      color: #4d5760;
      font-size: 13px;
      white-space: nowrap;
    }
    .nav-links a:hover { color: var(--blue); }
    .nav-cta, .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border: 1px solid var(--dark);
      border-radius: 7px;
      padding: 12px 18px;
      background: var(--blue);
      color: #fff;
      font-weight: 700;
      cursor: pointer;
      box-shadow: 4px 4px 0 var(--dark);
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    }
    .nav-cta { padding: 9px 14px; font-size: 13px; white-space: nowrap; }
    .button:hover, .nav-cta:hover { transform: translate(2px,2px); box-shadow: 2px 2px 0 var(--dark); }
    .button.secondary { background: var(--yellow); color: var(--dark); }
    .button.light { background: var(--white); color: var(--dark); }
    .menu-toggle { display: none; border: 1px solid var(--dark); background: var(--yellow); border-radius: 6px; padding: 8px 11px; font-size: 20px; }
    .hero {
      position: relative;
      overflow: hidden;
      background: #f2d35d;
      border-bottom: 1px solid var(--dark);
    }
    .hero:before, .hero:after {
      content: "";
      position: absolute;
      border: 3px solid var(--dark);
      transform: rotate(-12deg);
      pointer-events: none;
    }
    .hero:before { width: 150px; height: 150px; right: 7%; top: 28px; border-radius: 48% 52% 40% 60%; }
    .hero:after { width: 90px; height: 26px; left: 6%; bottom: 36px; border-radius: 50%; transform: rotate(18deg); }
    .hero-inner {
      min-height: 560px;
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      align-items: center;
      gap: 52px;
      padding: 80px 0 72px;
    }
    .eyebrow, .section-kicker {
      display: inline-block;
      color: var(--dark);
      font-weight: 800;
      letter-spacing: .04em;
      font-size: 13px;
      text-transform: uppercase;
    }
    .eyebrow { border-bottom: 3px solid var(--dark); padding-bottom: 5px; }
    h1, h2, h3, p { margin-top: 0; }
    h1 {
      max-width: 680px;
      margin-bottom: 22px;
      font-size: clamp(42px, 6vw, 76px);
      line-height: 1.08;
      letter-spacing: 0;
    }
    .hero-copy { max-width: 650px; font-size: 19px; color: #303940; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 30px 0 34px; }
    .hero-note { font-size: 13px; color: #4c555a; }
    .hero-board {
      position: relative;
      padding: 24px;
      border: 2px solid var(--dark);
      border-radius: 12px;
      background: var(--white);
      box-shadow: 12px 12px 0 var(--dark);
      transform: rotate(2deg);
    }
    .hero-board:before {
      content: "CREATE / COMPARE / DELIVER";
      display: block;
      padding-bottom: 14px;
      border-bottom: 2px dashed var(--dark);
      font-size: 12px;
      font-weight: 800;
      letter-spacing: .08em;
    }
    .board-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 12px; margin-top: 18px; }
    .board-cell { padding: 17px 14px; border: 1px solid var(--dark); border-radius: 7px; }
    .board-cell:nth-child(1) { background: var(--mint); }
    .board-cell:nth-child(2) { background: #f29a88; }
    .board-cell:nth-child(3) { background: #9ba8e9; }
    .board-cell:nth-child(4) { background: var(--yellow); }
    .board-cell strong { display: block; font-size: 22px; }
    .board-cell span { font-size: 12px; }
    .strip { border-bottom: 1px solid var(--line); background: var(--white); }
    .metric-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; }
    .metric { padding: 25px 24px; border-right: 1px solid var(--line); }
    .metric:last-child { border-right: 0; }
    .metric strong { display: block; font-size: 28px; color: var(--blue); }
    .metric span { color: var(--muted); font-size: 13px; }
    .section { padding: 96px 0; position: relative; }
    .section.alt { background: #e9f0ee; }
    .section.dark { background: var(--dark); color: #fff; }
    .section-head { max-width: 710px; margin-bottom: 42px; }
    .section-kicker { color: var(--coral); margin-bottom: 10px; }
    .dark .section-kicker { color: var(--yellow); }
    h2 { font-size: clamp(31px, 4vw, 50px); line-height: 1.15; margin-bottom: 15px; }
    h3 { font-size: 20px; line-height: 1.3; margin-bottom: 10px; }
    .lead { color: var(--muted); font-size: 17px; }
    .dark .lead { color: #d6dce2; }
    .intro-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 64px; align-items: start; }
    .intro-mark {
      min-height: 250px;
      padding: 34px;
      background: var(--coral);
      border: 2px solid var(--dark);
      box-shadow: 10px 10px 0 var(--dark);
      transform: rotate(-2deg);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .intro-mark strong { font-size: 46px; line-height: 1; }
    .intro-mark span { font-weight: 700; }
    .service-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
    .service-card {
      padding: 25px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--white);
      box-shadow: 0 5px 0 rgba(32,37,43,.08);
      transition: transform .22s ease, box-shadow .22s ease;
    }
    .service-card:hover { transform: translateY(-5px) rotate(-.4deg); box-shadow: var(--shadow); }
    .service-card p { color: var(--muted); font-size: 14px; margin-bottom: 0; }
    .service-tag { display: inline-block; padding: 4px 9px; margin-bottom: 18px; border: 1px solid var(--dark); border-radius: 4px; background: var(--yellow); font-size: 12px; font-weight: 800; }
    .service-card:nth-child(3n+2) .service-tag { background: var(--mint); }
    .service-card:nth-child(3n) .service-tag { background: #a9a2e8; }
    .workflow { display: grid; grid-template-columns: repeat(5,1fr); gap: 14px; counter-reset: step; }
    .step { position: relative; padding: 25px 18px; background: var(--white); border-top: 5px solid var(--blue); }
    .step:before { counter-increment: step; content: "0" counter(step); display: block; margin-bottom: 28px; color: var(--blue); font-size: 34px; font-weight: 800; }
    .step p { color: var(--muted); font-size: 14px; margin-bottom: 0; }
    .solution-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; }
    .solution { padding: 25px; border: 1px solid var(--line); background: var(--white); border-radius: 8px; }
    .solution strong { display: block; margin-bottom: 7px; color: var(--blue); }
    .solution p { margin: 0; color: var(--muted); font-size: 14px; }
    .network { display: flex; flex-wrap: wrap; gap: 10px; }
    .network span, .tag-cloud span { display: inline-flex; padding: 9px 14px; border: 1px solid var(--dark); border-radius: 5px; background: var(--white); font-size: 14px; }
    .network span:nth-child(4n) { background: var(--yellow); }
    .network span:nth-child(4n+2) { background: var(--mint); }
    .network span:nth-child(4n+3) { background: #f29a88; }
    .timeline { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; }
    .timeline-item { padding: 21px; border-left: 4px solid var(--coral); background: var(--white); }
    .timeline-item small { color: var(--coral); font-weight: 800; }
    .timeline-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .comparison-layout { display: grid; grid-template-columns: .7fr 1.3fr; gap: 28px; align-items: start; }
    .score-box { padding: 28px; border: 2px solid var(--dark); background: var(--yellow); box-shadow: 8px 8px 0 var(--dark); }
    .score { font-size: 64px; line-height: 1; font-weight: 800; }
    .stars { color: var(--coral); font-size: 25px; letter-spacing: 4px; }
    .table-wrap { overflow-x: auto; background: var(--white); border: 1px solid var(--line); }
    table { width: 100%; min-width: 680px; border-collapse: collapse; }
    th, td { padding: 15px 16px; text-align: left; border-bottom: 1px solid var(--line); font-size: 14px; }
    th { background: #e8eee9; color: var(--dark); }
    td:last-child { color: var(--blue); font-weight: 700; }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
    .tag-cloud span { border-radius: 30px; background: var(--white); }
    .tag-cloud span:nth-child(4n) { background: var(--yellow); }
    .tag-cloud span:nth-child(4n+1) { background: #f29a88; }
    .tag-cloud span:nth-child(4n+2) { background: var(--mint); }
    .price-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
    .price-card { padding: 26px; background: var(--white); border: 1px solid var(--line); border-radius: 8px; }
    .price-card.featured { border: 2px solid var(--blue); transform: translateY(-8px); }
    .price-card strong { display: block; font-size: 25px; }
    .price-card p { color: var(--muted); font-size: 14px; }
    .price-card ul { padding-left: 18px; color: var(--muted); font-size: 14px; }
    .case-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
    .case-card { overflow: hidden; background: var(--white); border: 1px solid var(--line); border-radius: 8px; }
    .case-card .media { aspect-ratio: 16/9; overflow: hidden; background: #e6e1d6; }
    .case-card .media img { width: 100%; height: 100%; object-fit: cover; }
    .case-body { padding: 21px; }
    .case-body p { color: var(--muted); font-size: 14px; margin-bottom: 0; }
    .reviews { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
    .review { padding: 24px; border: 1px solid var(--line); background: var(--white); }
    .review:nth-child(2), .review:nth-child(5) { transform: translateY(12px); }
    .review p { font-size: 15px; }
    .review footer { color: var(--muted); font-size: 13px; font-weight: 700; }
    .articles { display: grid; grid-template-columns: repeat(5,1fr); gap: 12px; }
    .article-link { min-height: 150px; padding: 18px; border: 1px solid var(--line); background: var(--white); display: flex; flex-direction: column; justify-content: space-between; }
    .article-link strong { font-size: 15px; }
    .article-link span { color: var(--blue); font-size: 12px; }
    .faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 28px; }
    details { border-bottom: 1px solid #46515d; padding: 17px 0; }
    summary { cursor: pointer; font-weight: 700; padding-right: 20px; }
    details p { margin: 12px 0 0; color: #cbd2d7; font-size: 14px; }
    .contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 45px; align-items: start; }
    .contact-info { display: grid; gap: 15px; }
    .contact-item { padding: 17px 20px; background: var(--white); border-left: 5px solid var(--coral); }
    .contact-item strong { display: block; }
    .contact-item span { color: var(--muted); font-size: 14px; }
    form { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; padding: 28px; background: var(--white); border: 1px solid var(--line); }
    label { display: grid; gap: 7px; color: var(--dark); font-size: 13px; font-weight: 700; }
    input, select, textarea { width: 100%; padding: 13px 14px; border: 1px solid #bfc4c0; border-radius: 5px; background: #fff; color: var(--ink); font: inherit; }
    textarea { min-height: 130px; resize: vertical; }
    .full { grid-column: 1 / -1; }
    .footer { background: #1e2731; color: #dce2e5; padding: 50px 0 24px; }
    .footer-grid { display: grid; grid-template-columns: 1.1fr .9fr .9fr; gap: 34px; padding-bottom: 35px; border-bottom: 1px solid #46515d; }
    .footer h3 { color: #fff; font-size: 17px; }
    .footer p, .footer a { color: #b9c3c9; font-size: 13px; }
    .footer a:hover { color: var(--yellow); }
    .footer-links { display: grid; gap: 6px; }
    .footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 19px; color: #94a0a8; font-size: 12px; }
    .qr { width: 112px; margin-top: 10px; }
    .float-actions { position: fixed; right: 18px; bottom: 20px; z-index: 15; display: grid; gap: 9px; }
    .float-actions a { width: 46px; height: 46px; display: grid; place-items: center; border: 1px solid var(--dark); border-radius: 50%; background: var(--yellow); box-shadow: 3px 3px 0 var(--dark); font-size: 20px; }
    .reveal { opacity: 0; transform: translateY(18px); transition: opacity .65s ease, transform .65s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    @media (max-width: 1050px) {
      .nav-links { display: none; position: absolute; top: 76px; left: 20px; right: 20px; padding: 12px; background: var(--white); border: 1px solid var(--dark); box-shadow: 6px 6px 0 var(--dark); }
      .nav-links.open { display: grid; grid-template-columns: repeat(2,1fr); }
      .nav-links a { border-bottom: 1px solid var(--line); }
      .menu-toggle { display: block; }
      .nav-cta { margin-left: auto; }
      .hero-inner, .intro-grid, .comparison-layout, .contact-grid { grid-template-columns: 1fr; }
      .hero-inner { padding-top: 58px; }
      .service-grid, .reviews { grid-template-columns: repeat(2,1fr); }
      .articles { grid-template-columns: repeat(3,1fr); }
    }
    @media (max-width: 700px) {
      .container { width: min(var(--container), calc(100% - 28px)); }
      .nav-wrap { min-height: 68px; gap: 10px; }
      .brand { min-width: auto; font-size: 16px; }
      .ai-page-logo { width: 36px; }
      .nav-cta { padding: 8px 10px; font-size: 12px; }
      .nav-links { top: 68px; left: 14px; right: 14px; }
      .hero-inner { min-height: auto; padding: 64px 0 70px; gap: 38px; }
      h1 { font-size: 43px; }
      .hero-copy { font-size: 16px; }
      .hero-board { transform: none; }
      .metric-grid { grid-template-columns: repeat(2,1fr); }
      .metric { border-bottom: 1px solid var(--line); }
      .metric:nth-child(2) { border-right: 0; }
      .section { padding: 67px 0; }
      .service-grid, .solution-grid, .timeline, .price-grid, .case-grid, .reviews, .faq-grid, .footer-grid { grid-template-columns: 1fr; }
      .workflow { grid-template-columns: 1fr 1fr; }
      .articles { grid-template-columns: 1fr 1fr; }
      .review:nth-child(2), .review:nth-child(5) { transform: none; }
      .price-card.featured { transform: none; }
      form { grid-template-columns: 1fr; padding: 20px; }
      .full { grid-column: auto; }
      .footer-bottom { display: grid; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *:before, *:after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
      .reveal { opacity: 1; transform: none; }
    }