:root {
      --ink: #24201e;
      --muted: #746b66;
      --paper: #fffaf6;
      --white: #ffffff;
      --orange: #f4511e;
      --orange-dark: #bd3212;
      --orange-soft: #fff0e8;
      --gold: #ffb52e;
      --line: #eadfd7;
      --green: #18786c;
      --shadow: 0 18px 50px rgba(87, 42, 20, .10);
      --container: 1180px;
      --radius: 18px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background:
        linear-gradient(180deg, #fffaf6 0%, #fffdfb 35%, #fff8f2 100%);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
      line-height: 1.7;
      overflow-x: hidden;
    }

    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; height: auto; }
    button, input, select, textarea { font: inherit; }
    .container {
      width: min(var(--container), calc(100% - 40px));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(255, 250, 246, .94);
      border-bottom: 1px solid rgba(234, 223, 215, .8);
      backdrop-filter: blur(16px);
    }

    .nav-bar {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      flex: 0 0 auto;
    }

    .ai-page-logo { width: 148px; }

    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 0;
      flex-wrap: wrap;
    }

    .nav-links a {
      padding: 8px 9px;
      color: #504640;
      font-size: 13px;
      transition: color .2s ease, transform .2s ease;
    }

    .nav-links a:hover { color: var(--orange); transform: translateY(-1px); }

    .nav-cta, .button-primary, .button-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 0 20px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 700;
      cursor: pointer;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    }

    .nav-cta, .button-primary {
      color: #fff;
      background: var(--orange);
      box-shadow: 0 10px 24px rgba(244, 81, 30, .22);
    }

    .nav-cta:hover, .button-primary:hover {
      transform: translateY(-2px);
      background: var(--orange-dark);
      box-shadow: 0 14px 28px rgba(244, 81, 30, .28);
    }

    .button-secondary {
      color: var(--orange-dark);
      background: #fff;
      border-color: #f3b59b;
    }

    .button-secondary:hover {
      transform: translateY(-2px);
      background: var(--orange-soft);
    }

    .menu-toggle {
      display: none;
      border: 1px solid var(--line);
      background: #fff;
      color: var(--ink);
      border-radius: 10px;
      width: 42px;
      height: 42px;
      cursor: pointer;
    }

    .hero {
      position: relative;
      overflow: hidden;
      padding: 86px 0 74px;
      background:
        linear-gradient(135deg, #fff4e9 0%, #fffaf6 52%, #ffe3d0 100%);
      border-bottom: 1px solid #f3ddd0;
    }

    .hero::before, .hero::after {
      content: "";
      position: absolute;
      pointer-events: none;
      border: 1px solid rgba(244, 81, 30, .18);
      transform: rotate(14deg);
    }

    .hero::before {
      width: 340px;
      height: 340px;
      right: -110px;
      top: -130px;
      border-radius: 42% 58% 55% 45%;
    }

    .hero::after {
      width: 180px;
      height: 180px;
      left: -80px;
      bottom: -100px;
      border-radius: 50%;
    }

    .hero-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1.1fr) minmax(340px, .9fr);
      gap: 70px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      color: var(--orange-dark);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: 1px;
      text-transform: uppercase;
    }

    .eyebrow::before {
      content: "";
      width: 28px;
      height: 3px;
      background: var(--orange);
      border-radius: 4px;
    }

    h1, h2, h3, p { margin-top: 0; }
    h1 {
      max-width: 680px;
      margin-bottom: 22px;
      font-size: clamp(38px, 5vw, 70px);
      line-height: 1.12;
      letter-spacing: 0;
    }

    h1 strong { color: var(--orange); font-weight: 850; }
    .hero-copy {
      max-width: 620px;
      color: var(--muted);
      font-size: 18px;
    }

    .hero-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      margin: 30px 0 32px;
    }

    .hero-note {
      display: flex;
      align-items: center;
      gap: 12px;
      color: #665b54;
      font-size: 14px;
    }

    .hero-note span {
      display: inline-grid;
      place-items: center;
      width: 28px;
      height: 28px;
      color: #fff;
      background: var(--green);
      border-radius: 50%;
      font-size: 14px;
    }

    .signal-panel {
      position: relative;
      padding: 26px;
      border: 1px solid rgba(244, 81, 30, .24);
      background: rgba(255, 255, 255, .72);
      box-shadow: var(--shadow);
      border-radius: 24px;
      animation: rise-in .8s ease both;
    }

    .signal-panel::before {
      content: "AIGC WORKFLOW";
      position: absolute;
      right: 22px;
      top: 18px;
      color: rgba(189, 50, 18, .35);
      font-size: 10px;
      font-weight: 800;
      letter-spacing: 1.5px;
    }

    .signal-title {
      width: 72%;
      margin-bottom: 22px;
      font-size: 24px;
      line-height: 1.3;
    }

    .signal-list { display: grid; gap: 12px; }
    .signal-item {
      display: grid;
      grid-template-columns: 36px 1fr auto;
      gap: 12px;
      align-items: center;
      padding: 13px 0;
      border-bottom: 1px solid #f0dfd6;
    }

    .signal-item:last-child { border-bottom: 0; }
    .signal-icon {
      display: grid;
      place-items: center;
      width: 36px;
      height: 36px;
      color: var(--orange);
      background: var(--orange-soft);
      border-radius: 10px;
      font-weight: 900;
    }

    .signal-item b { display: block; font-size: 15px; }
    .signal-item small { color: var(--muted); font-size: 12px; }
    .signal-item em {
      color: var(--green);
      font-style: normal;
      font-size: 12px;
      font-weight: 800;
    }

    .section { padding: 90px 0; }
    .section-tint { background: #fff1e8; }
    .section-soft { background: #fffdfb; }
    .section-heading {
      display: flex;
      justify-content: space-between;
      align-items: end;
      gap: 30px;
      margin-bottom: 38px;
    }

    .section-heading > div:first-child { max-width: 680px; }
    h2 {
      margin-bottom: 12px;
      font-size: clamp(30px, 4vw, 46px);
      line-height: 1.18;
    }

    h3 { margin-bottom: 8px; line-height: 1.35; }
    .section-heading p { margin-bottom: 0; color: var(--muted); }
    .section-label {
      margin-bottom: 10px;
      color: var(--orange);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: 1.5px;
    }

    .metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
      margin-top: 34px;
    }

    .metric {
      padding: 24px;
      background: #fff;
      border-left: 4px solid var(--orange);
      box-shadow: 0 10px 28px rgba(87, 42, 20, .06);
    }

    .metric strong {
      display: block;
      margin-bottom: 6px;
      color: var(--orange-dark);
      font-size: 34px;
      line-height: 1;
    }

    .metric span { color: var(--muted); font-size: 14px; }

    .about-layout {
      display: grid;
      grid-template-columns: 1fr 1.35fr;
      gap: 50px;
      align-items: start;
    }

    .about-lead {
      padding: 30px;
      color: #fff;
      background: #26211f;
      border-radius: 0 26px 0 26px;
      box-shadow: var(--shadow);
    }

    .about-lead h3 { color: #fff; font-size: 27px; }
    .about-lead p { color: #e6d9d1; }
    .about-lead .button-secondary { color: #fff; background: transparent; border-color: #f8a98d; }
    .about-points {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 22px 30px;
    }

    .about-point {
      padding-bottom: 20px;
      border-bottom: 1px solid var(--line);
    }

    .about-point b { display: block; margin-bottom: 5px; font-size: 17px; }
    .about-point p { margin-bottom: 0; color: var(--muted); font-size: 14px; }

    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }

    .service-card {
      min-height: 210px;
      padding: 25px;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    }

    .service-card:hover {
      transform: translateY(-5px);
      border-color: #f2a483;
      box-shadow: var(--shadow);
    }

    .service-number {
      display: inline-block;
      margin-bottom: 23px;
      color: var(--orange);
      font-size: 13px;
      font-weight: 800;
    }

    .service-card p { color: var(--muted); font-size: 14px; margin-bottom: 0; }
    .tag-list, .cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .tag {
      display: inline-flex;
      padding: 5px 10px;
      color: #8f3b21;
      background: var(--orange-soft);
      border-radius: 99px;
      font-size: 12px;
      font-weight: 700;
    }

    .workflow {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 0;
      counter-reset: step;
    }

    .workflow-step {
      position: relative;
      padding: 0 22px 0 0;
      counter-increment: step;
    }

    .workflow-step:not(:last-child)::after {
      content: "";
      position: absolute;
      top: 22px;
      left: 52px;
      right: 18px;
      height: 1px;
      background: #f1b79d;
    }

    .workflow-step::before {
      content: counter(step);
      position: relative;
      z-index: 1;
      display: grid;
      place-items: center;
      width: 44px;
      height: 44px;
      margin-bottom: 20px;
      color: #fff;
      background: var(--orange);
      border: 5px solid #fff3eb;
      border-radius: 50%;
      font-weight: 800;
    }

    .workflow-step h3 { font-size: 17px; }
    .workflow-step p { color: var(--muted); font-size: 13px; }

    .solution-layout {
      display: grid;
      grid-template-columns: .8fr 1.2fr;
      gap: 30px;
      align-items: start;
    }

    .solution-intro {
      padding: 30px;
      background: #fff;
      border-top: 5px solid var(--orange);
      box-shadow: var(--shadow);
    }

    .solution-intro p { color: var(--muted); }
    .solution-intro .tag-list { margin-top: 22px; }
    .solution-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
    }

    .solution-item {
      padding: 18px;
      background: rgba(255,255,255,.72);
      border: 1px solid var(--line);
    }

    .solution-item b { display: block; margin-bottom: 4px; }
    .solution-item span { color: var(--muted); font-size: 13px; }

    .network {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 24px;
      align-items: stretch;
    }

    .network-panel {
      padding: 30px;
      background: #25211f;
      color: #fff;
      border-radius: 22px;
    }

    .network-panel p { color: #dbcbc1; }
    .network-panel .cloud { margin-top: 20px; }
    .network-panel .tag { color: #ffe0cb; background: rgba(255, 255, 255, .1); }
    .network-aside {
      padding: 30px;
      background: var(--gold);
      color: #352519;
      border-radius: 22px;
    }

    .network-aside strong {
      display: block;
      margin: 10px 0;
      font-size: 40px;
      line-height: 1;
    }

    .network-aside p { color: #654323; }

    .comparison {
      display: grid;
      grid-template-columns: .7fr 1.3fr;
      gap: 24px;
      align-items: stretch;
    }

    .score-card {
      padding: 30px;
      color: #fff;
      background: linear-gradient(145deg, #ef4e1d, #b92e14);
      border-radius: 24px;
    }

    .score-card small { color: #ffe4d8; }
    .score {
      margin: 12px 0 4px;
      font-size: 68px;
      font-weight: 850;
      line-height: 1;
    }

    .stars { color: #ffd267; letter-spacing: 3px; font-size: 22px; }
    .score-card p { color: #ffece4; }
    .table-wrap {
      overflow-x: auto;
      background: #fff;
      border: 1px solid var(--line);
    }

    table {
      width: 100%;
      min-width: 680px;
      border-collapse: collapse;
      text-align: left;
    }

    th, td {
      padding: 16px 18px;
      border-bottom: 1px solid var(--line);
      vertical-align: top;
      font-size: 14px;
    }

    th { color: #7f321e; background: #fff1e8; }
    tr:last-child td { border-bottom: 0; }
    td:first-child { font-weight: 800; }
    .check { color: var(--green); font-weight: 800; }

    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }

    .case-card {
      overflow: hidden;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 16px;
    }

    .case-image {
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: #f5e1d5;
    }

    .case-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .case-body { padding: 21px; }
    .case-body p { color: var(--muted); font-size: 14px; margin-bottom: 0; }

    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }

    .testimonial {
      padding: 24px;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 16px;
    }

    .testimonial::before {
      content: "“";
      display: block;
      height: 32px;
      color: var(--orange);
      font-family: Georgia, serif;
      font-size: 48px;
      line-height: .8;
    }

    .testimonial p { color: #554944; font-size: 14px; }
    .testimonial footer {
      padding-top: 12px;
      border-top: 1px solid var(--line);
      color: var(--orange-dark);
      font-size: 13px;
      font-weight: 800;
    }

    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }

    .price-box {
      padding: 26px;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 16px;
    }

    .price-box.featured {
      border: 2px solid var(--orange);
      transform: translateY(-8px);
      box-shadow: var(--shadow);
    }

    .price-box small { color: var(--orange); font-weight: 800; }
    .price-box strong {
      display: block;
      margin: 13px 0 8px;
      font-size: 28px;
    }
    .price-box p { color: var(--muted); font-size: 14px; }

    .match-layout {
      display: grid;
      grid-template-columns: .75fr 1.25fr;
      gap: 30px;
      align-items: start;
    }

    .match-copy {
      padding: 28px;
      background: #fff4eb;
      border-left: 5px solid var(--orange);
    }

    .match-copy p { color: var(--muted); }
    form {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 15px;
      padding: 28px;
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
    }

    .field { display: grid; gap: 6px; }
    .field.full { grid-column: 1 / -1; }
    label { color: #51443e; font-size: 13px; font-weight: 800; }
    input, select, textarea {
      width: 100%;
      border: 1px solid #ddcec5;
      border-radius: 8px;
      padding: 12px 13px;
      color: var(--ink);
      background: #fffdfc;
      outline: none;
      transition: border-color .2s ease, box-shadow .2s ease;
    }

    input:focus, select:focus, textarea:focus {
      border-color: var(--orange);
      box-shadow: 0 0 0 3px rgba(244, 81, 30, .12);
    }

    textarea { min-height: 120px; resize: vertical; }
    form .button-primary { grid-column: 1 / -1; justify-self: start; border: 0; }

    .faq-list {
      max-width: 900px;
      margin: 0 auto;
    }

    details {
      background: #fff;
      border-bottom: 1px solid var(--line);
    }

    details:first-child { border-top: 1px solid var(--line); }
    summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      padding: 20px 4px;
      cursor: pointer;
      list-style: none;
      font-weight: 800;
    }

    summary::-webkit-details-marker { display: none; }
    summary::after {
      content: "+";
      color: var(--orange);
      font-size: 24px;
      font-weight: 400;
    }

    details[open] summary::after { content: "−"; }
    details p {
      max-width: 820px;
      margin: -6px 38px 20px 4px;
      color: var(--muted);
      font-size: 14px;
    }

    .article-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }

    .article-card {
      padding: 23px;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 14px;
      transition: transform .2s ease, box-shadow .2s ease;
    }

    .article-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
    .article-card small { color: var(--orange); font-weight: 800; }
    .article-card h3 { margin-top: 13px; font-size: 19px; }
    .article-card p { color: var(--muted); font-size: 14px; }

    .footer-cta {
      padding: 62px 0;
      color: #fff;
      background: #27211f;
    }

    .footer-cta .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
    }

    .footer-cta h2 { margin-bottom: 8px; }
    .footer-cta p { margin-bottom: 0; color: #dbcac1; }
    .footer-cta .button-secondary { color: #fff; border-color: #f4a98d; background: transparent; }

    .site-footer {
      color: #e7d8d0;
      background: #1e1917;
      padding: 42px 0 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr .9fr 1fr;
      gap: 30px;
      padding-bottom: 32px;
      border-bottom: 1px solid #493a34;
    }

    .site-footer h3 { color: #fff; font-size: 15px; }
    .site-footer p, .site-footer a { color: #bdaea6; font-size: 13px; }
    .site-footer a:hover { color: #ffb18f; }
    .footer-links { display: grid; gap: 6px; }
    .qr {
      width: 108px;
      margin-top: 10px;
      border: 5px solid #fff;
    }

    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      padding-top: 22px;
      color: #9f9088;
      font-size: 12px;
    }

    .floating-actions {
      position: fixed;
      z-index: 15;
      right: 20px;
      bottom: 20px;
      display: grid;
      gap: 9px;
    }

    .floating-actions a, .to-top {
      display: grid;
      place-items: center;
      width: 48px;
      height: 48px;
      color: #fff;
      background: var(--orange);
      border: 0;
      border-radius: 50%;
      box-shadow: 0 8px 20px rgba(83, 36, 16, .2);
      cursor: pointer;
      font-size: 13px;
      font-weight: 800;
    }

    .reveal {
      opacity: 0;
      transform: translateY(18px);
      transition: opacity .65s ease, transform .65s ease;
    }

    .reveal.visible { opacity: 1; transform: translateY(0); }

    @keyframes rise-in {
      from { opacity: 0; transform: translateY(18px); }
      to { opacity: 1; transform: translateY(0); }
    }

    @media (max-width: 1060px) {
      .nav-links a { padding: 8px 5px; font-size: 12px; }
      .nav-cta { padding: 0 13px; font-size: 13px; }
      .hero-grid { gap: 36px; }
    }

    @media (max-width: 860px) {
      .menu-toggle { display: block; }
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 20px;
        right: 20px;
        padding: 12px;
        background: #fffaf6;
        border: 1px solid var(--line);
        box-shadow: var(--shadow);
        border-radius: 12px;
      }

      .nav-links.open { display: grid; grid-template-columns: repeat(2, 1fr); }
      .nav-links a { padding: 10px; border-bottom: 1px solid #f1e6df; }
      .nav-cta { grid-column: 1 / -1; margin: 8px; }
      .hero-grid, .about-layout, .solution-layout, .network, .comparison, .match-layout {
        grid-template-columns: 1fr;
      }

      .metrics { grid-template-columns: repeat(2, 1fr); }
      .service-grid, .case-grid, .testimonial-grid, .article-grid { grid-template-columns: repeat(2, 1fr); }
      .workflow { grid-template-columns: repeat(5, minmax(130px, 1fr)); overflow-x: auto; padding-bottom: 8px; }
      .workflow-step { min-width: 130px; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 560px) {
      .container { width: min(var(--container), calc(100% - 28px)); }
      .section { padding: 64px 0; }
      .hero { padding: 62px 0 54px; }
      h1 { font-size: 40px; }
      .hero-copy { font-size: 16px; }
      .section-heading { display: block; }
      .section-heading .button-secondary { margin-top: 18px; }
      .metrics, .service-grid, .case-grid, .testimonial-grid, .article-grid, .pricing-grid, .solution-list, .about-points {
        grid-template-columns: 1fr;
      }

      .price-box.featured { transform: none; }
      form { grid-template-columns: 1fr; padding: 20px; }
      .field.full, form .button-primary { grid-column: auto; }
      .footer-cta .container, .copyright { display: grid; }
      .footer-grid { grid-template-columns: 1fr; }
      .signal-panel { padding: 20px; }
      .floating-actions { right: 12px; bottom: 12px; }
    }