:root {
      color-scheme: dark;
      --bg: #120d1d;
      --surface: #1c1428;
      --surface-2: #251a34;
      --ink: #f7f1ff;
      --muted: #b9aec8;
      --pink: #ff4fa3;
      --violet: #b87aff;
      --cyan: #68e4da;
      --line: rgba(232, 208, 255, .15);
      --container: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 88px; }
    body {
      margin: 0;
      background: var(--bg);
      color: var(--ink);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
    }
    body::before {
      position: fixed;
      inset: 0;
      z-index: -1;
      content: "";
      background:
        linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
      background-size: 48px 48px;
      mask-image: linear-gradient(to bottom, black, transparent 72%);
      pointer-events: none;
    }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    button, a { -webkit-tap-highlight-color: transparent; }
    img { max-width: 100%; height: auto; }
    .container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 10;
      border-bottom: 1px solid var(--line);
      background: rgba(18, 13, 29, .94);
      backdrop-filter: blur(14px);
    }
    .header-inner { min-height: 76px; 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; }
    .brand img { display: block; width: 38px; max-height: 42px; object-fit: contain; }
    .nav-links { display: flex; align-items: center; justify-content: flex-end; gap: 0; flex-wrap: wrap; }
    .nav-links a { padding: 8px 10px; color: var(--muted); font-size: 13px; transition: color .2s ease; }
    .nav-links a:hover, .nav-links a:focus-visible { color: var(--ink); }
    .header-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
    .menu-toggle { display: none; }
    .button {
      display: inline-flex;
      min-height: 46px;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 18px;
      border: 1px solid transparent;
      border-radius: 4px;
      background: linear-gradient(105deg, var(--pink), #bd5bff);
      color: #170c20;
      font-weight: 750;
      transition: transform .2s ease, filter .2s ease, box-shadow .2s ease;
      cursor: pointer;
    }
    .button:hover { transform: translateY(-2px); filter: brightness(1.08); box-shadow: 0 8px 24px rgba(255,79,163,.22); }
    .button-secondary { border-color: var(--line); background: #21182b; color: var(--ink); }
    .button-small { min-height: 38px; padding: 7px 13px; font-size: 13px; }
    .hero { position: relative; overflow: hidden; padding: 76px 0 54px; }
    .hero::after {
      position: absolute;
      top: -180px;
      right: -80px;
      width: min(55vw, 680px);
      aspect-ratio: 1;
      border: 1px solid rgba(255,79,163,.26);
      border-radius: 50%;
      box-shadow: 0 0 0 40px rgba(184,122,255,.045), 0 0 0 88px rgba(255,79,163,.03);
      content: "";
      pointer-events: none;
    }
    .hero-inner { position: relative; z-index: 1; }
    .eyebrow { margin: 0 0 14px; color: var(--cyan); font-size: 12px; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
    h1 { max-width: 780px; margin: 0; font-size: clamp(42px, 7vw, 76px); line-height: 1.08; letter-spacing: 0; }
    .hero h1 span { color: var(--pink); }
    .hero-copy { max-width: 680px; margin: 22px 0 26px; color: var(--muted); font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-footnote { margin: 20px 0 0; color: #93879f; font-size: 13px; }
    .signal-line { display: flex; align-items: center; gap: 12px; margin-top: 48px; color: var(--muted); font-size: 13px; }
    .signal-line::before { width: 44px; height: 1px; background: var(--pink); content: ""; }
    .stats { display: grid; grid-template-columns: repeat(4, 1fr); border-block: 1px solid var(--line); }
    .stat { padding: 22px 20px; border-right: 1px solid var(--line); }
    .stat:last-child { border-right: 0; }
    .stat strong { display: block; color: var(--ink); font-size: 18px; }
    .stat span { color: var(--muted); font-size: 13px; }
    .section { padding: 76px 0; }
    .section + .section { border-top: 1px solid rgba(232,208,255,.08); }
    .section-heading { display: flex; align-items: end; justify-content: space-between; gap: 28px; margin-bottom: 30px; }
    .section-heading h2 { margin: 0; font-size: clamp(28px, 4vw, 42px); line-height: 1.18; }
    .section-heading p { max-width: 530px; margin: 0; color: var(--muted); }
    .kicker { margin: 0 0 8px; color: var(--pink); font-size: 12px; font-weight: 750; letter-spacing: .1em; }
    .intro-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 50px; align-items: start; }
    .intro-grid h2 { margin: 0 0 16px; font-size: 34px; }
    .intro-grid p { margin: 0 0 14px; color: var(--muted); }
    .capability-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 24px; border-top: 1px solid var(--line); }
    .capability-list div { padding: 14px 0; border-bottom: 1px solid var(--line); }
    .capability-list strong { display: block; margin-bottom: 4px; }
    .capability-list span { color: var(--muted); font-size: 13px; }
    .service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
    .service { min-height: 148px; padding: 20px; border: 1px solid var(--line); background: linear-gradient(145deg, rgba(37,26,52,.88), rgba(28,20,40,.78)); transition: transform .2s ease, border-color .2s ease; }
    .service:hover { transform: translateY(-3px); border-color: rgba(255,79,163,.55); }
    .service h3 { margin: 0 0 8px; font-size: 17px; }
    .service p { margin: 0; color: var(--muted); font-size: 13px; }
    .service-index { display: inline-block; margin-bottom: 12px; color: var(--cyan); font-size: 11px; letter-spacing: .08em; }
    .model-band { padding: 22px 24px; border-left: 2px solid var(--pink); background: var(--surface); }
    .model-band p { margin: 0 0 12px; color: var(--muted); }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
    .tag-cloud span { padding: 5px 9px; border: 1px solid var(--line); color: #e5d8f3; font-size: 12px; }
    .workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: step; }
    .workflow article { position: relative; padding: 18px 22px 18px 0; border-top: 1px solid var(--line); counter-increment: step; }
    .workflow article::before { display: block; margin-bottom: 14px; color: var(--pink); content: "0" counter(step); font-size: 13px; font-weight: 800; }
    .workflow h3 { margin: 0 0 7px; font-size: 16px; }
    .workflow p { margin: 0; color: var(--muted); font-size: 13px; }
    .price-note { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 20px; padding: 25px 0; border-block: 1px solid var(--line); }
    .price-note h3 { margin: 0 0 5px; font-size: 20px; }
    .price-note p { margin: 0; color: var(--muted); }
    .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); }
    th { background: #241a30; color: var(--ink); font-size: 13px; }
    td { color: var(--muted); font-size: 14px; }
    td:first-child { color: var(--ink); font-weight: 650; }
    tr:last-child td { border-bottom: 0; }
    .rating-row { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-bottom: 20px; }
    .rating-score { color: var(--pink); font-size: 31px; font-weight: 800; }
    .rating-stars { color: #ffd36a; letter-spacing: 2px; }
    .review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
    .review { padding: 19px; border-top: 2px solid var(--violet); background: rgba(37,26,52,.78); }
    .review p { margin: 0 0 14px; color: #e6ddec; font-size: 14px; }
    .review span { color: var(--muted); font-size: 12px; }
    .case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .case { display: grid; grid-template-columns: 42% 1fr; align-items: center; gap: 18px; padding: 15px; border: 1px solid var(--line); background: var(--surface); }
    .case .media { overflow: hidden; aspect-ratio: 16 / 10; background: #281d34; }
    .case img { display: block; width: 100%; height: 100%; object-fit: cover; }
    .case h3 { margin: 0 0 7px; font-size: 17px; }
    .case p { margin: 0; color: var(--muted); font-size: 13px; }
    .case-square { grid-template-columns: 34% 1fr; }
    .case-square .media { aspect-ratio: 1; }
    .timeline { display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--line); }
    .timeline article { padding: 20px 22px 20px 0; }
    .timeline article + article { padding-left: 22px; border-left: 1px solid var(--line); }
    .timeline h3 { margin: 0 0 6px; font-size: 16px; }
    .timeline p { margin: 0; color: var(--muted); font-size: 13px; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-list details { border-bottom: 1px solid var(--line); }
    .faq-list summary { position: relative; padding: 17px 38px 17px 0; cursor: pointer; font-weight: 650; list-style: none; }
    .faq-list summary::-webkit-details-marker { display: none; }
    .faq-list summary::after { position: absolute; top: 16px; right: 4px; color: var(--pink); content: "+"; font-size: 22px; }
    .faq-list details[open] summary::after { content: "−"; }
    .faq-list details p { max-width: 850px; margin: 0; padding: 0 34px 17px 0; color: var(--muted); font-size: 14px; }
    .article-links, .friend-links { display: flex; flex-wrap: wrap; gap: 10px 18px; }
    .article-links a, .friend-links a { color: #ded1eb; font-size: 14px; text-decoration: underline; text-decoration-color: rgba(184,122,255,.45); text-underline-offset: 4px; }
    .contact-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 44px; align-items: start; }
    .contact-copy h2 { margin: 0 0 12px; font-size: 32px; }
    .contact-copy p { color: var(--muted); }
    .contact-meta { display: grid; gap: 9px; margin-top: 22px; color: #e4d9ed; font-size: 14px; }
    .contact-meta a { color: var(--cyan); }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
    .field { display: grid; gap: 6px; }
    .field-full { grid-column: 1 / -1; }
    .field label { color: #e7dced; font-size: 13px; }
    .field input, .field select, .field textarea {
      width: 100%;
      min-height: 44px;
      padding: 10px 12px;
      border: 1px solid var(--line);
      border-radius: 3px;
      outline: 0;
      background: #1b1424;
      color: var(--ink);
    }
    .field textarea { min-height: 112px; resize: vertical; }
    .field input:focus, .field select:focus, .field textarea:focus { border-color: var(--violet); box-shadow: 0 0 0 2px rgba(184,122,255,.12); }
    .form-foot { display: flex; align-items: center; flex-wrap: wrap; gap: 13px; margin-top: 15px; }
    .form-foot small { color: var(--muted); }
    .site-footer { border-top: 1px solid var(--line); background: #0d0915; color: #eee5f5; }
    .footer-main { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: start; padding-block: 27px; }
    .footer-main p { margin: 8px 0 0; color: #b9aec8; font-size: 13px; }
    .footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px 16px; max-width: 620px; }
    .footer-links a { color: #d5c8e1; font-size: 13px; }
    .copyright { padding: 12px 0 18px; border-top: 1px solid rgba(232,208,255,.1); color: #a99db6; font-size: 12px; }
    .floating-contact { position: fixed; right: 18px; bottom: 18px; z-index: 9; display: flex; flex-direction: column; align-items: end; gap: 8px; }
    .floating-contact a { padding: 9px 13px; border: 1px solid rgba(255,79,163,.5); background: #21172c; color: var(--ink); font-size: 13px; box-shadow: 0 7px 22px rgba(0,0,0,.3); }
    .floating-contact a:hover { background: #34203d; }
    .reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
    .reveal.is-visible { opacity: 1; transform: translateY(0); }
    @media (max-width: 980px) {
      .header-inner { gap: 12px; }
      .nav-links { gap: 0; }
      .nav-links a { padding-inline: 7px; font-size: 12px; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 760px) {
      .container { width: min(var(--container), calc(100% - 32px)); }
      .header-inner { min-height: 66px; }
      .menu-toggle { display: inline-flex; min-height: 40px; align-items: center; justify-content: center; padding: 7px 10px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); cursor: pointer; }
      .nav-links { display: none; position: absolute; top: 66px; right: 0; left: 0; align-items: stretch; padding: 8px 16px 14px; border-bottom: 1px solid var(--line); background: #171020; }
      .nav-links.is-open { display: flex; flex-direction: column; }
      .nav-links a { padding: 10px 8px; font-size: 14px; }
      .header-actions .button { display: none; }
      .hero { padding-top: 56px; }
      .hero::after { top: -80px; right: -250px; width: 480px; }
      .hero-copy { font-size: 16px; }
      .stats { grid-template-columns: repeat(2, 1fr); }
      .stat:nth-child(2) { border-right: 0; }
      .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
      .section { padding: 56px 0; }
      .section-heading { align-items: start; flex-direction: column; gap: 12px; }
      .intro-grid, .contact-grid { grid-template-columns: 1fr; gap: 26px; }
      .service-grid, .review-grid { grid-template-columns: repeat(2, 1fr); }
      .workflow { grid-template-columns: repeat(2, 1fr); gap: 8px 18px; }
      .case-grid { grid-template-columns: 1fr; }
      .timeline { grid-template-columns: 1fr; }
      .timeline article, .timeline article + article { padding: 16px 0; border-left: 0; }
      .timeline article + article { border-top: 1px solid var(--line); }
      .footer-main { grid-template-columns: 1fr; }
      .footer-links { justify-content: flex-start; }
    }
    @media (max-width: 480px) {
      .brand img { width: 32px; }
      .brand { font-size: 14px; }
      .hero { padding-bottom: 40px; }
      h1 { font-size: 42px; }
      .hero-actions .button { width: 100%; }
      .stats { margin-inline: -16px; }
      .stat { padding: 16px; }
      .capability-list, .service-grid, .review-grid, .workflow, .form-grid { grid-template-columns: 1fr; }
      .case, .case-square { grid-template-columns: 1fr; }
      .case .media, .case-square .media { aspect-ratio: 16 / 10; }
      .price-note { grid-template-columns: 1fr; }
      .field-full { grid-column: auto; }
      .floating-contact { right: 10px; bottom: 10px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
      .reveal { opacity: 1; transform: none; }
    }