:root {
      --red: #e52f3e;
      --red-deep: #ae1f31;
      --red-soft: #fff0f1;
      --ink: #1f242b;
      --muted: #69717b;
      --line: #e7e1df;
      --cream: #fffaf7;
      --paper: #ffffff;
      --gold: #e6ad55;
      --green: #248c6a;
      --shadow: 0 16px 40px rgba(67, 32, 27, .09);
      --radius: 8px;
      --container: 1180px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--cream);
      font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
      line-height: 1.7;
    }
    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;
    }
    .topbar {
      background: #211f22;
      color: #fff;
      font-size: 13px;
    }
    .topbar-inner {
      min-height: 34px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
    }
    .topbar strong { color: #ffcf80; font-weight: 600; }
    header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(255, 250, 247, .96);
      border-bottom: 1px solid rgba(229, 47, 62, .12);
      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;
      flex: 0 0 auto;
    }
    .brand img {
      width: 126px;
      max-height: 44px;
      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: #45484d;
      font-size: 13px;
      transition: color .2s ease, background .2s ease;
    }
    .nav-links a:hover {
      color: var(--red);
      background: var(--red-soft);
    }
    .nav-cta, .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: 0;
      border-radius: 5px;
      padding: 12px 20px;
      color: #fff;
      background: var(--red);
      font-weight: 700;
      cursor: pointer;
      box-shadow: 0 8px 18px rgba(229, 47, 62, .2);
      transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
    }
    .nav-cta:hover, .btn:hover { background: var(--red-deep); transform: translateY(-2px); }
    .menu-toggle {
      display: none;
      background: transparent;
      border: 1px solid var(--line);
      color: var(--ink);
      padding: 8px 10px;
      border-radius: 5px;
    }
    .hero {
      position: relative;
      overflow: hidden;
      background:
        linear-gradient(135deg, #fff7f2 0%, #fff 48%, #ffe7e8 100%);
      border-bottom: 1px solid #f1d8d6;
    }
    .hero::after {
      content: "";
      position: absolute;
      width: 380px;
      height: 380px;
      right: -150px;
      top: -120px;
      border: 1px solid rgba(229, 47, 62, .24);
      transform: rotate(28deg);
      box-shadow: -26px 28px 0 rgba(229, 47, 62, .06), -52px 56px 0 rgba(229, 47, 62, .04);
    }
    .hero-inner {
      position: relative;
      z-index: 1;
      min-height: 620px;
      display: grid;
      grid-template-columns: minmax(0, 1.1fr) minmax(320px, .9fr);
      align-items: center;
      gap: 56px;
      padding: 76px 0 72px;
    }
    .eyebrow {
      color: var(--red-deep);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: 2px;
      text-transform: uppercase;
    }
    h1, h2, h3, p { margin-top: 0; }
    h1 {
      max-width: 680px;
      margin-bottom: 22px;
      font-size: clamp(36px, 5vw, 68px);
      line-height: 1.12;
      letter-spacing: 0;
    }
    .hero-copy {
      max-width: 620px;
      font-size: 18px;
      color: #555b63;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin: 30px 0 36px;
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--red);
      color: var(--red-deep);
      border-radius: 5px;
      padding: 11px 19px;
      font-weight: 700;
      transition: background .2s ease, color .2s ease;
    }
    .btn-outline:hover { color: #fff; background: var(--red); }
    .hero-note {
      display: flex;
      flex-wrap: wrap;
      gap: 14px 24px;
      color: #64666b;
      font-size: 13px;
    }
    .hero-note span::before { content: "✓"; color: var(--green); font-weight: 800; margin-right: 6px; }
    .signal-panel {
      position: relative;
      padding: 26px;
      border: 1px solid rgba(174, 31, 49, .18);
      background: rgba(255, 255, 255, .78);
      box-shadow: var(--shadow);
    }
    .signal-panel::before {
      content: "AIGC";
      position: absolute;
      right: 20px;
      top: 12px;
      color: rgba(229, 47, 62, .12);
      font-size: 58px;
      font-weight: 900;
      letter-spacing: 4px;
    }
    .signal-panel h2 { position: relative; font-size: 22px; margin-bottom: 22px; }
    .signal-row {
      position: relative;
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 15px 0;
      border-top: 1px solid var(--line);
    }
    .signal-row:first-of-type { border-top: 0; }
    .signal-icon {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      background: var(--red-soft);
      color: var(--red);
      font-weight: 900;
      border-radius: 50%;
    }
    .signal-row strong { display: block; font-size: 16px; }
    .signal-row small { color: var(--muted); }
    section { padding: 92px 0; }
    .section-head {
      display: flex;
      justify-content: space-between;
      align-items: end;
      gap: 28px;
      margin-bottom: 38px;
    }
    .section-head h2 {
      max-width: 650px;
      margin-bottom: 8px;
      font-size: clamp(28px, 3.4vw, 44px);
      line-height: 1.18;
    }
    .section-head p { max-width: 560px; color: var(--muted); margin-bottom: 0; }
    .section-kicker { color: var(--red); font-weight: 800; font-size: 13px; letter-spacing: 1px; }
    .metrics {
      background: #fff;
      border-bottom: 1px solid var(--line);
    }
    .metric-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 0;
    }
    .metric {
      padding: 26px 24px;
      border-right: 1px solid var(--line);
    }
    .metric:last-child { border-right: 0; }
    .metric strong { display: block; color: var(--red-deep); font-size: 32px; line-height: 1.1; }
    .metric span { color: var(--muted); font-size: 14px; }
    .about-grid {
      display: grid;
      grid-template-columns: .92fr 1.08fr;
      gap: 62px;
      align-items: start;
    }
    .about-lead { font-size: 22px; line-height: 1.55; }
    .about-copy { color: var(--muted); }
    .proof-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
      margin-top: 30px;
    }
    .proof-list div { padding-left: 16px; border-left: 3px solid var(--red); }
    .proof-list strong { display: block; margin-bottom: 4px; }
    .proof-list span { color: var(--muted); font-size: 14px; }
    .capability-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }
    .capability {
      padding: 24px;
      background: #fff;
      border-top: 3px solid transparent;
      box-shadow: 0 8px 24px rgba(67, 32, 27, .05);
      transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
    }
    .capability:hover { transform: translateY(-5px); border-color: var(--red); box-shadow: var(--shadow); }
    .capability h3 { font-size: 19px; margin-bottom: 8px; }
    .capability p { color: var(--muted); font-size: 14px; margin-bottom: 0; }
    .capability .number { color: var(--red); font-weight: 900; font-size: 13px; }
    .service-band { background: #251f22; color: #fff; }
    .service-band .section-head p, .service-band .section-kicker { color: #e7b9b5; }
    .service-band .section-head h2 { color: #fff; }
    .service-grid {
      display: grid;
      grid-template-columns: 1.12fr .88fr;
      gap: 28px;
      align-items: stretch;
    }
    .service-feature {
      padding: 34px;
      background: linear-gradient(135deg, #9c1e31, #e52f3e);
      min-height: 370px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .service-feature h3 { font-size: 32px; max-width: 500px; line-height: 1.25; }
    .service-feature p { max-width: 520px; color: #ffe7e4; }
    .service-tags { display: flex; flex-wrap: wrap; gap: 9px; }
    .service-tags span {
      padding: 7px 11px;
      border: 1px solid rgba(255,255,255,.3);
      color: #fff;
      font-size: 13px;
    }
    .service-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: #4b3436; }
    .service-list article { padding: 24px; background: #302629; }
    .service-list h3 { font-size: 17px; margin-bottom: 7px; color: #fff; }
    .service-list p { margin: 0; color: #d9c9c8; font-size: 13px; }
    .workflow { background: #fff; }
    .steps {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }
    .step { padding: 26px 18px; border-right: 1px solid var(--line); }
    .step:last-child { border-right: 0; }
    .step-num { color: var(--red); font-weight: 900; font-size: 13px; }
    .step h3 { font-size: 17px; margin: 12px 0 6px; }
    .step p { color: var(--muted); font-size: 13px; margin-bottom: 0; }
    .solution-grid, .case-grid, .review-grid, .article-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .solution {
      background: #fff;
      padding: 24px;
      border-left: 4px solid var(--red);
    }
    .solution h3 { margin-bottom: 8px; font-size: 19px; }
    .solution p { color: var(--muted); font-size: 14px; margin-bottom: 0; }
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      padding: 26px;
      background: #fff;
      border: 1px solid var(--line);
    }
    .tag-cloud span {
      padding: 8px 12px;
      background: var(--red-soft);
      color: var(--red-deep);
      font-size: 13px;
    }
    .network {
      background: #fff1ef;
    }
    .network-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
      align-items: center;
    }
    .network-map {
      min-height: 300px;
      padding: 28px;
      background:
        linear-gradient(90deg, rgba(229,47,62,.08) 1px, transparent 1px),
        linear-gradient(rgba(229,47,62,.08) 1px, transparent 1px),
        #fff;
      background-size: 35px 35px;
      border: 1px solid #f1cdca;
      display: grid;
      place-items: center;
      text-align: center;
    }
    .network-map strong { display: block; font-size: 42px; color: var(--red-deep); }
    .network-map span { color: var(--muted); }
    .network-points { display: grid; gap: 14px; }
    .network-points article { padding: 17px 20px; background: #fff; border-left: 3px solid var(--red); }
    .network-points strong { display: block; }
    .network-points span { color: var(--muted); font-size: 13px; }
    .media-section { background: #fff; }
    .case-card, .review-card, .article-card {
      background: var(--cream);
      border: 1px solid var(--line);
      overflow: hidden;
      transition: transform .25s ease, box-shadow .25s ease;
    }
    .case-card:hover, .review-card:hover, .article-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
    .case-card .media, .article-card .media { aspect-ratio: 16 / 9; overflow: hidden; background: #f2e9e6; }
    .case-card img, .article-card img { width: 100%; height: 100%; object-fit: cover; }
    .case-body, .article-body { padding: 20px; }
    .case-body h3, .article-body h3 { font-size: 18px; margin-bottom: 7px; }
    .case-body p, .article-body p { color: var(--muted); font-size: 14px; margin: 0; }
    .comparison {
      background: #fff;
    }
    .rating {
      display: flex;
      align-items: center;
      gap: 22px;
      padding: 24px 28px;
      margin-bottom: 28px;
      background: var(--red);
      color: #fff;
    }
    .rating strong { font-size: 44px; line-height: 1; }
    .stars { color: #ffdf79; font-size: 24px; letter-spacing: 3px; }
    .rating span { color: #ffe5e4; font-size: 13px; }
    .table-wrap { overflow-x: auto; border: 1px solid var(--line); }
    table { width: 100%; min-width: 760px; border-collapse: collapse; background: #fff; }
    th, td { padding: 16px 18px; text-align: left; border-bottom: 1px solid var(--line); font-size: 14px; }
    th { background: #fff4f1; color: var(--red-deep); }
    tr:last-child td { border-bottom: 0; }
    td:first-child { font-weight: 700; }
    .good { color: var(--green); font-weight: 700; }
    .price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .price-card { padding: 26px; background: #fff; border: 1px solid var(--line); }
    .price-card.featured { border: 2px solid var(--red); position: relative; }
    .price-card.featured::before { content: "重点参考"; position: absolute; top: 0; right: 0; padding: 5px 10px; background: var(--red); color: #fff; font-size: 12px; }
    .price-card h3 { font-size: 20px; margin-bottom: 8px; }
    .price-card strong { display: block; color: var(--red-deep); font-size: 32px; margin: 14px 0; }
    .price-card p { color: var(--muted); font-size: 14px; margin-bottom: 0; }
    .review-card { padding: 24px; background: #fff; }
    .review-card .stars { font-size: 16px; letter-spacing: 1px; }
    .review-card blockquote { margin: 15px 0; color: #4f5359; font-size: 15px; }
    .review-card cite { color: var(--red-deep); font-style: normal; font-weight: 700; font-size: 13px; }
    .faq-layout {
      display: grid;
      grid-template-columns: .78fr 1.22fr;
      gap: 48px;
      align-items: start;
    }
    .faq-intro { position: sticky; top: 110px; }
    .faq-intro p { color: var(--muted); }
    .faq-list { display: grid; gap: 10px; }
    details { background: #fff; border: 1px solid var(--line); }
    summary {
      cursor: pointer;
      list-style: none;
      padding: 18px 22px;
      font-weight: 700;
      position: relative;
      padding-right: 50px;
    }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; position: absolute; right: 22px; color: var(--red); font-size: 22px; line-height: 1; }
    details[open] summary::after { content: "−"; }
    details p { padding: 0 22px 18px; margin: 0; color: var(--muted); font-size: 14px; }
    .contact {
      background: #fff0ef;
    }
    .contact-layout {
      display: grid;
      grid-template-columns: .82fr 1.18fr;
      gap: 34px;
      align-items: start;
    }
    .contact-info { padding: 28px 0; }
    .contact-info h2 { font-size: 38px; line-height: 1.2; }
    .contact-items { display: grid; gap: 14px; margin-top: 28px; }
    .contact-item { padding-left: 16px; border-left: 3px solid var(--red); }
    .contact-item strong { display: block; }
    .contact-item span { color: var(--muted); font-size: 14px; }
    .form-box { padding: 30px; background: #fff; box-shadow: var(--shadow); }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .field { display: grid; gap: 7px; }
    .field.full { grid-column: 1 / -1; }
    label { font-size: 13px; font-weight: 700; }
    input, select, textarea {
      width: 100%;
      border: 1px solid #dcd5d2;
      background: #fffdfa;
      color: var(--ink);
      padding: 12px 13px;
      border-radius: 4px;
      outline: none;
    }
    input:focus, select:focus, textarea:focus { border-color: var(--red); box-shadow: 0 0 0 3px rgba(229,47,62,.1); }
    textarea { min-height: 118px; resize: vertical; }
    .submit-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-top: 20px; }
    .submit-row small { color: var(--muted); }
    .join {
      padding: 60px 0;
      background: #211f22;
      color: #fff;
    }
    .join-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; }
    .join h2 { margin-bottom: 8px; }
    .join p { color: #d2c4c1; margin-bottom: 0; }
    .links-section { padding: 56px 0; background: #fff; }
    .article-grid { grid-template-columns: repeat(5, 1fr); gap: 12px; }
    .article-card { padding: 15px; min-height: 110px; }
    .article-card h3 { font-size: 15px; line-height: 1.45; }
    .article-card p { font-size: 12px; }
    .friend-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
    .friend-links a { color: var(--red-deep); font-size: 13px; border-bottom: 1px solid #eab2ae; }
    footer {
      background: #171619;
      color: #d8d1d0;
      padding: 38px 0 22px;
    }
    .footer-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 34px; padding-bottom: 28px; }
    footer h3 { color: #fff; font-size: 17px; margin-bottom: 12px; }
    footer p, footer a { color: #bdb5b3; font-size: 13px; }
    footer a:hover { color: #ffb2ad; }
    .footer-logo { width: 120px; filter: grayscale(1) brightness(0) invert(1); margin-bottom: 15px; }
    .footer-bottom { padding-top: 18px; border-top: 1px solid #393537; color: #8f8887; font-size: 12px; }
    .float-tools { position: fixed; right: 20px; bottom: 22px; z-index: 15; display: grid; gap: 8px; }
    .float-tools a, .float-tools button {
      width: 46px;
      height: 46px;
      display: grid;
      place-items: center;
      border: 0;
      border-radius: 50%;
      background: var(--red);
      color: #fff;
      cursor: pointer;
      box-shadow: 0 8px 20px rgba(174,31,49,.25);
      font-size: 19px;
    }
    .float-tools a:hover, .float-tools button:hover { background: var(--red-deep); }
    .reveal { opacity: 0; transform: translateY(20px); transition: opacity .7s ease, transform .7s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    @media (max-width: 1050px) {
      .nav-links a { padding-inline: 6px; font-size: 12px; }
      .nav-cta { padding: 10px 13px; font-size: 13px; }
      .article-grid { grid-template-columns: repeat(3, 1fr); }
    }
    @media (max-width: 820px) {
      .topbar-inner { justify-content: center; text-align: center; }
      .topbar-inner span:last-child { display: none; }
      .nav-wrap { min-height: 66px; }
      .menu-toggle { display: block; }
      .nav-links {
        display: none;
        position: absolute;
        top: 66px;
        left: 0;
        right: 0;
        padding: 12px 20px 18px;
        background: var(--cream);
        border-bottom: 1px solid var(--line);
        box-shadow: 0 12px 24px rgba(0,0,0,.08);
      }
      .nav-links.open { display: grid; grid-template-columns: repeat(2, 1fr); }
      .nav-links a { padding: 10px; font-size: 13px; }
      .nav-cta { grid-column: 1 / -1; margin-top: 5px; }
      .hero-inner, .about-grid, .service-grid, .network-layout, .faq-layout, .contact-layout { grid-template-columns: 1fr; }
      .hero-inner { min-height: auto; padding: 68px 0 60px; gap: 40px; }
      .signal-panel { max-width: 600px; }
      .metric-grid { grid-template-columns: repeat(2, 1fr); }
      .metric:nth-child(2) { border-right: 0; }
      .metric:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
      .capability-grid, .solution-grid, .case-grid, .review-grid { grid-template-columns: repeat(2, 1fr); }
      .steps { grid-template-columns: repeat(2, 1fr); }
      .step:nth-child(2) { border-right: 0; }
      .step:nth-child(-n+3) { border-bottom: 1px solid var(--line); }
      .faq-intro { position: static; }
      .price-grid { grid-template-columns: 1fr; }
      .join-inner { align-items: flex-start; flex-direction: column; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 560px) {
      .container { width: min(var(--container), calc(100% - 28px)); }
      section { padding: 64px 0; }
      h1 { font-size: 38px; }
      .section-head { display: block; }
      .section-head h2 { margin-bottom: 14px; }
      .hero-copy { font-size: 16px; }
      .proof-list, .capability-grid, .solution-grid, .case-grid, .review-grid, .article-grid, .form-grid { grid-template-columns: 1fr; }
      .metric { padding: 21px 15px; }
      .metric strong { font-size: 26px; }
      .service-feature { min-height: 320px; padding: 25px; }
      .service-feature h3 { font-size: 26px; }
      .service-list { grid-template-columns: 1fr; }
      .steps { grid-template-columns: 1fr; }
      .step, .step:nth-child(2) { border-right: 0; border-bottom: 1px solid var(--line); }
      .step:last-child { border-bottom: 0; }
      .rating { align-items: flex-start; flex-direction: column; gap: 8px; }
      .form-box { padding: 22px 17px; }
      .field.full { grid-column: auto; }
      .submit-row { align-items: flex-start; flex-direction: column; }
      .footer-grid { grid-template-columns: 1fr; }
      .float-tools { right: 12px; bottom: 14px; }
    }
    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
    }