:root {
      --bg: #0d0919;
      --bg-soft: #151026;
      --panel: #1b1430;
      --panel-light: #241b3e;
      --line: rgba(255,255,255,.12);
      --text: #f7f2ff;
      --muted: #b8aacb;
      --pink: #ff3f9f;
      --violet: #9b5cff;
      --cyan: #63e7ff;
      --green: #68e0b0;
      --yellow: #ffd76a;
      --max: 1180px;
      --shadow: 0 20px 60px rgba(0,0,0,.26);
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--text);
      background: var(--bg);
      font-family: "PingFang SC","Microsoft YaHei","Noto Sans 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; }
    button, input, select, textarea { font: inherit; }
    .container { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
    .topbar {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(13,9,25,.92);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(16px);
    }
    .nav {
      min-height: 74px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      flex-shrink: 0;
      font-weight: 800;
      font-size: 18px;
    }
    .ai-page-logo { width: 42px; height: 42px; object-fit: contain; }
    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 0;
      flex-wrap: wrap;
    }
    .nav-links a {
      color: var(--muted);
      font-size: 13px;
      padding: 8px 10px;
      transition: color .2s ease;
    }
    .nav-links a:hover { color: var(--cyan); }
    .nav-cta, .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border: 1px solid transparent;
      border-radius: 7px;
      padding: 12px 19px;
      font-weight: 700;
      cursor: pointer;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    }
    .nav-cta, .btn-primary {
      color: #fff;
      background: var(--pink);
      box-shadow: 0 8px 24px rgba(255,63,159,.25);
    }
    .nav-cta:hover, .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(255,63,159,.38); }
    .menu-toggle {
      display: none;
      border: 1px solid var(--line);
      color: var(--text);
      background: var(--panel);
      border-radius: 6px;
      padding: 8px 11px;
      cursor: pointer;
    }
    .hero {
      position: relative;
      overflow: hidden;
      background: #100a20;
      border-bottom: 1px solid var(--line);
    }
    .hero::before, .hero::after {
      content: "";
      position: absolute;
      pointer-events: none;
      border: 1px solid rgba(155,92,255,.28);
      transform: rotate(22deg);
    }
    .hero::before { width: 380px; height: 380px; right: -140px; top: -130px; }
    .hero::after { width: 220px; height: 220px; left: -120px; bottom: -100px; border-color: rgba(255,63,159,.3); }
    .hero-grid {
      position: relative;
      z-index: 1;
      min-height: 650px;
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      align-items: center;
      gap: 70px;
      padding: 86px 0 78px;
    }
    .eyebrow {
      color: var(--cyan);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: 2px;
      text-transform: uppercase;
    }
    h1, h2, h3, p { margin-top: 0; }
    h1 {
      max-width: 700px;
      margin: 16px 0 22px;
      font-size: clamp(38px, 6vw, 72px);
      line-height: 1.12;
      letter-spacing: 0;
    }
    .hero-copy {
      color: var(--muted);
      max-width: 650px;
      font-size: 18px;
    }
    .hero-actions { display: flex; gap: 13px; flex-wrap: wrap; margin: 30px 0 38px; }
    .btn-outline {
      border-color: rgba(255,255,255,.24);
      color: var(--text);
      background: transparent;
    }
    .btn-outline:hover { border-color: var(--cyan); color: var(--cyan); transform: translateY(-2px); }
    .hero-points {
      display: flex;
      flex-wrap: wrap;
      gap: 10px 22px;
      color: #d9cbe8;
      font-size: 14px;
    }
    .hero-points span::before { content: "◆"; color: var(--pink); margin-right: 7px; font-size: 9px; }
    .signal-board {
      padding: 24px;
      border: 1px solid rgba(255,255,255,.16);
      background: rgba(28,19,51,.82);
      box-shadow: var(--shadow);
      position: relative;
    }
    .signal-board::before {
      content: "AIGC WORKSPACE";
      display: block;
      color: var(--pink);
      font-size: 11px;
      letter-spacing: 2px;
      margin-bottom: 24px;
    }
    .signal-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 0;
      border-top: 1px solid var(--line);
    }
    .signal-row strong { font-size: 30px; color: var(--cyan); }
    .signal-row span { color: var(--muted); font-size: 14px; }
    .signal-bar { height: 5px; background: #33264f; margin-top: 6px; }
    .signal-bar i { display: block; height: 100%; background: var(--pink); }
    .section { padding: 94px 0; }
    .section-alt { background: #130d24; border-top: 1px solid rgba(255,255,255,.05); border-bottom: 1px solid rgba(255,255,255,.05); }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 35px; }
    .section-head h2 { margin: 8px 0 0; font-size: clamp(28px,4vw,46px); line-height: 1.18; }
    .section-head p { max-width: 560px; color: var(--muted); margin-bottom: 0; }
    .metric-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; }
    .metric {
      padding: 22px;
      border-left: 3px solid var(--pink);
      background: var(--panel);
    }
    .metric strong { display: block; font-size: 34px; color: var(--cyan); line-height: 1.2; }
    .metric span { color: var(--muted); font-size: 14px; }
    .intro-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 60px; align-items: start; }
    .intro-grid p { color: var(--muted); }
    .feature-list { display: grid; grid-template-columns: repeat(2,1fr); gap: 13px; }
    .feature {
      padding: 21px;
      background: var(--panel);
      border: 1px solid var(--line);
      transition: transform .25s ease, border-color .25s ease;
    }
    .feature:hover, .service:hover, .review:hover, .case:hover { transform: translateY(-5px); border-color: rgba(99,231,255,.6); }
    .feature b { display: block; color: var(--text); margin-bottom: 5px; }
    .feature span { color: var(--muted); font-size: 14px; }
    .service-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 15px; }
    .service {
      padding: 24px;
      background: var(--panel);
      border: 1px solid var(--line);
      transition: transform .25s ease, border-color .25s ease;
    }
    .service-index { color: var(--pink); font-size: 13px; font-weight: 800; }
    .service h3 { margin: 12px 0 8px; font-size: 20px; }
    .service p { color: var(--muted); font-size: 14px; margin-bottom: 0; }
    .service-wide { grid-column: span 2; }
    .process {
      display: grid;
      grid-template-columns: repeat(5,1fr);
      gap: 0;
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }
    .step { padding: 25px 18px; border-right: 1px solid var(--line); }
    .step:last-child { border-right: 0; }
    .step b { display: block; color: var(--cyan); font-size: 25px; margin-bottom: 15px; }
    .step h3 { font-size: 17px; margin-bottom: 6px; }
    .step p { color: var(--muted); font-size: 13px; margin-bottom: 0; }
    .solution-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
    .solution-box { padding: 28px; background: var(--panel); border: 1px solid var(--line); }
    .solution-box h3 { color: var(--yellow); }
    .solution-box ul { padding-left: 20px; margin: 0; color: var(--muted); }
    .solution-box li { margin: 8px 0; }
    .network {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .network span, .tag {
      display: inline-flex;
      padding: 8px 13px;
      border: 1px solid rgba(155,92,255,.5);
      color: #e7d8ff;
      background: rgba(155,92,255,.1);
      border-radius: 5px;
      font-size: 13px;
    }
    .review-score {
      display: grid;
      grid-template-columns: .75fr 1.25fr;
      gap: 34px;
      align-items: center;
      margin-bottom: 32px;
      padding: 30px;
      background: #21153a;
      border: 1px solid rgba(255,63,159,.4);
    }
    .score-num { font-size: 68px; color: var(--pink); font-weight: 800; line-height: 1; }
    .stars { color: var(--yellow); letter-spacing: 4px; font-size: 22px; }
    .review-score p { color: var(--muted); margin: 10px 0 0; }
    .compare-wrap { overflow-x: auto; border: 1px solid var(--line); }
    table { width: 100%; border-collapse: collapse; min-width: 760px; }
    th, td { padding: 16px 18px; text-align: left; border-bottom: 1px solid var(--line); }
    th { color: var(--cyan); background: #1a112e; font-size: 14px; }
    td { color: var(--muted); font-size: 14px; }
    td:first-child { color: var(--text); font-weight: 700; }
    .positive { color: var(--green); }
    .tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
    .price-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 15px; }
    .price { padding: 26px; background: var(--panel); border-top: 3px solid var(--violet); }
    .price h3 { margin: 0 0 10px; }
    .price p { color: var(--muted); font-size: 14px; }
    .price strong { display: block; color: var(--cyan); font-size: 23px; margin: 14px 0; }
    .case-grid, .review-grid, .article-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
    .case, .review, .article {
      overflow: hidden;
      background: var(--panel);
      border: 1px solid var(--line);
      transition: transform .25s ease, border-color .25s ease;
    }
    .media-box { background: #24153b; aspect-ratio: 16 / 8; overflow: hidden; }
    .media-box img { width: 100%; height: 100%; object-fit: cover; }
    .case-body, .review-body, .article-body { padding: 21px; }
    .case h3, .article h3 { margin: 0 0 8px; font-size: 19px; }
    .case p, .review p, .article p { color: var(--muted); font-size: 14px; margin: 0; }
    .review-body { min-height: 190px; }
    .review-name { color: var(--cyan); font-weight: 700; margin-bottom: 10px; }
    .faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; align-items: start; }
    details { background: var(--panel); border: 1px solid var(--line); }
    summary { cursor: pointer; padding: 17px 20px; font-weight: 700; list-style: none; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; float: right; color: var(--pink); font-size: 22px; line-height: 1; }
    details[open] summary::after { content: "−"; }
    details p { padding: 0 20px 18px; color: var(--muted); font-size: 14px; margin: 0; }
    .form-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 45px; align-items: start; }
    .contact-note { color: var(--muted); }
    .contact-list { padding: 0; margin: 25px 0 0; list-style: none; }
    .contact-list li { padding: 10px 0; border-bottom: 1px solid var(--line); color: #ded2e9; }
    form { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; padding: 28px; background: var(--panel); border: 1px solid var(--line); }
    label { display: grid; gap: 7px; color: #e8dcf2; font-size: 14px; }
    label.full { grid-column: 1 / -1; }
    input, select, textarea {
      width: 100%;
      color: var(--text);
      background: #100a20;
      border: 1px solid rgba(255,255,255,.17);
      border-radius: 5px;
      padding: 12px 13px;
      outline: none;
    }
    input:focus, select:focus, textarea:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(99,231,255,.1); }
    textarea { min-height: 130px; resize: vertical; }
    form .btn { grid-column: 1 / -1; justify-self: start; }
    .article a { display: block; padding: 21px; }
    .article small { color: var(--pink); display: block; margin-bottom: 8px; }
    .footer {
      padding: 44px 0 22px;
      background: #090611;
      border-top: 1px solid var(--line);
      color: var(--muted);
    }
    .footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 35px; }
    .footer h3 { color: var(--text); font-size: 17px; margin-bottom: 12px; }
    .footer p { font-size: 14px; }
    .footer-links { display: flex; flex-wrap: wrap; gap: 8px 15px; font-size: 14px; }
    .footer-links a:hover { color: var(--cyan); }
    .copyright { border-top: 1px solid var(--line); margin-top: 30px; padding-top: 18px; font-size: 13px; }
    .float-contact {
      position: fixed;
      right: 20px;
      bottom: 20px;
      z-index: 10;
      width: 54px;
      height: 54px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: #fff;
      background: var(--pink);
      box-shadow: 0 12px 30px rgba(255,63,159,.35);
      font-weight: 800;
    }
    .reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    @media (max-width: 980px) {
      .nav-links { display: none; position: absolute; top: 74px; left: 0; right: 0; padding: 12px 20px 18px; background: #100a20; border-bottom: 1px solid var(--line); }
      .nav-links.open { display: grid; grid-template-columns: repeat(2,1fr); }
      .nav-links a { padding: 10px; }
      .menu-toggle { display: block; }
      .nav-cta { display: none; }
      .hero-grid, .intro-grid, .form-layout { grid-template-columns: 1fr; }
      .hero-grid { min-height: auto; padding: 75px 0; gap: 40px; }
      .metric-grid { grid-template-columns: repeat(2,1fr); }
      .process { grid-template-columns: repeat(2,1fr); }
      .step:nth-child(2) { border-right: 0; }
      .step:nth-child(-n+3) { border-bottom: 1px solid var(--line); }
    }
    @media (max-width: 680px) {
      .container { width: min(var(--max), calc(100% - 28px)); }
      .section { padding: 65px 0; }
      .section-head { display: block; }
      .section-head p { margin-top: 15px; }
      .metric-grid, .feature-list, .service-grid, .solution-layout, .price-grid, .case-grid, .review-grid, .article-grid, .faq-grid { grid-template-columns: 1fr; }
      .service-wide { grid-column: auto; }
      .process { grid-template-columns: 1fr; }
      .step, .step:nth-child(2) { border-right: 0; border-bottom: 1px solid var(--line); }
      .step:last-child { border-bottom: 0; }
      .review-score { grid-template-columns: 1fr; }
      form { grid-template-columns: 1fr; padding: 20px; }
      label.full, form .btn { grid-column: auto; }
      .footer-grid { grid-template-columns: 1fr; gap: 22px; }
      h1 { font-size: 41px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
    }