:root {
      --primary: #1d4ed8;
      --primary-hover: #1e40af;
      --accent-orange: #ea580c;
      --accent-cyan: #0284c7;
      --accent-violet: #7c3aed;
      --accent-pink: #db2777;
      --accent-yellow: #ca8a04;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-color: #cbd5e1;
      --border-bold: #0f172a;
      --shadow-pop: 5px 5px 0px #0f172a;
      --shadow-pop-sm: 3px 3px 0px #0f172a;
      --radius: 12px;
      --container-max: 1200px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      font-size: 16px;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.2s ease;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    .section-wrap {
      padding: 72px 0;
      border-bottom: 2px solid #e2e8f0;
      position: relative;
    }

    .section-head {
      text-align: center;
      margin-bottom: 48px;
    }

    .tag-badge {
      display: inline-block;
      padding: 6px 14px;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0.5px;
      text-transform: uppercase;
      border-radius: 999px;
      margin-bottom: 12px;
      border: 2px solid var(--border-bold);
      background-color: #fef08a;
      color: #713f12;
      box-shadow: 2px 2px 0px var(--border-bold);
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
      margin-bottom: 12px;
    }

    .section-sub {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 760px;
      margin: 0 auto;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      padding: 12px 26px;
      border-radius: var(--radius);
      border: 2px solid var(--border-bold);
      box-shadow: var(--shadow-pop-sm);
      cursor: pointer;
      transition: all 0.15s ease;
      font-size: 15px;
      text-align: center;
      line-height: 1.2;
    }

    .btn:hover {
      transform: translate(-2px, -2px);
      box-shadow: var(--shadow-pop);
    }

    .btn:active {
      transform: translate(2px, 2px);
      box-shadow: 1px 1px 0px var(--border-bold);
    }

    .btn-primary {
      background-color: var(--primary);
      color: #ffffff;
    }

    .btn-accent {
      background-color: #fbbf24;
      color: #78350f;
    }

    .btn-contrast {
      background-color: #ff3366;
      color: #ffffff;
    }

    .btn-white {
      background-color: #ffffff;
      color: var(--text-main);
    }

    .site-header {
      background: #ffffff;
      border-bottom: 2px solid var(--border-bold);
      position: sticky;
      top: 0;
      z-index: 999;
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .brand-logo-wrap {
      max-width: 140px;
      display: flex;
      align-items: center;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li a {
      padding: 8px 12px;
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
      border-radius: 6px;
    }

    .nav-links li a:hover {
      background-color: #eff6ff;
      color: var(--primary);
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .nav-toggle {
      display: none;
      background: #ffffff;
      border: 2px solid var(--border-bold);
      padding: 6px 10px;
      border-radius: 6px;
      font-weight: bold;
      font-size: 14px;
      cursor: pointer;
    }

    .hero-section {
      background: linear-gradient(135deg, #f0fdf4 0%, #eff6ff 50%, #faf5ff 100%);
      padding: 80px 0 90px;
      border-bottom: 2px solid var(--border-bold);
      position: relative;
    }

    .hero-container {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }

    .hero-content h1 {
      font-size: 40px;
      line-height: 1.2;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.8px;
    }

    .hero-content h1 span.highlight {
      background: #fde047;
      padding: 2px 8px;
      border: 2px solid var(--border-bold);
      border-radius: 6px;
      box-shadow: 2px 2px 0px var(--border-bold);
      color: #0f172a;
      display: inline-block;
      margin-top: 4px;
    }

    .hero-lead {
      font-size: 18px;
      color: var(--text-muted);
      margin-bottom: 30px;
      line-height: 1.7;
    }

    .hero-btn-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 32px;
    }

    .hero-feature-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .pill-tag {
      font-size: 12px;
      font-weight: 700;
      background: #ffffff;
      border: 1.5px solid var(--border-bold);
      padding: 4px 10px;
      border-radius: 99px;
      color: var(--text-main);
    }

    .hero-visual-card {
      background: #ffffff;
      border: 2.5px solid var(--border-bold);
      border-radius: 16px;
      padding: 28px;
      box-shadow: var(--shadow-pop);
    }

    .status-panel-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 2px solid #e2e8f0;
      padding-bottom: 14px;
      margin-bottom: 20px;
    }

    .status-light {
      display: inline-block;
      width: 10px;
      height: 10px;
      background-color: #10b981;
      border-radius: 50%;
      margin-right: 6px;
    }

    .stat-metric-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 20px;
    }

    .stat-metric-item {
      background: #f8fafc;
      border: 1.5px solid var(--border-bold);
      border-radius: 10px;
      padding: 14px;
      text-align: center;
    }

    .stat-metric-item .val {
      font-size: 26px;
      font-weight: 900;
      color: var(--primary);
    }

    .stat-metric-item .lbl {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-muted);
    }

    .hero-interactive-tip {
      background: #ecfeff;
      border: 1.5px dashed #0891b2;
      border-radius: 8px;
      padding: 12px;
      font-size: 13px;
      color: #155e75;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .models-marquee-bar {
      background: #ffffff;
      border-bottom: 2px solid var(--border-bold);
      padding: 16px 0;
      overflow: hidden;
      white-space: nowrap;
    }

    .marquee-label {
      font-weight: 900;
      font-size: 13px;
      color: #ffffff;
      background: #0f172a;
      padding: 4px 10px;
      border-radius: 4px;
      margin-right: 14px;
      display: inline-block;
    }

    .models-list {
      display: inline-flex;
      gap: 10px;
      flex-wrap: wrap;
    }

    .model-chip {
      font-size: 12px;
      font-weight: 700;
      background: #f1f5f9;
      padding: 4px 12px;
      border-radius: 6px;
      border: 1px solid #cbd5e1;
      color: #334155;
    }

    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }

    .color-card {
      background: var(--bg-card);
      border: 2px solid var(--border-bold);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-pop-sm);
      transition: all 0.2s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .color-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-pop);
    }

    .card-strip-blue { border-top: 6px solid #2563eb; }
    .card-strip-orange { border-top: 6px solid #ea580c; }
    .card-strip-purple { border-top: 6px solid #9333ea; }
    .card-strip-emerald { border-top: 6px solid #059669; }
    .card-strip-pink { border-top: 6px solid #db2777; }
    .card-strip-amber { border-top: 6px solid #d97706; }

    .card-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      border: 2px solid var(--border-bold);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 18px;
      margin-bottom: 16px;
    }

    .icon-blue { background: #dbeafe; color: #1e40af; }
    .icon-orange { background: #ffedd5; color: #9a3412; }
    .icon-purple { background: #f3e8ff; color: #6b21a8; }
    .icon-emerald { background: #d1fae5; color: #065f46; }

    .color-card h3 {
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .color-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .card-footer-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .step-box {
      background: #ffffff;
      border: 2px solid var(--border-bold);
      border-radius: var(--radius);
      padding: 22px;
      position: relative;
      box-shadow: var(--shadow-pop-sm);
    }

    .step-badge {
      position: absolute;
      top: -14px;
      left: 20px;
      background: #f97316;
      color: #ffffff;
      font-weight: 900;
      font-size: 13px;
      padding: 2px 10px;
      border-radius: 99px;
      border: 2px solid var(--border-bold);
    }

    .step-box h4 {
      font-size: 17px;
      font-weight: 800;
      margin-top: 10px;
      margin-bottom: 8px;
    }

    .step-box p {
      font-size: 13.5px;
      color: var(--text-muted);
    }

    .media-card {
      background: #ffffff;
      border: 2px solid var(--border-bold);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-pop-sm);
    }

    .media-img-wrap {
      width: 100%;
      background: #f1f5f9;
      border-bottom: 2px solid var(--border-bold);
      position: relative;
      overflow: hidden;
    }

    .media-info {
      padding: 18px;
    }

    .media-info h4 {
      font-size: 17px;
      font-weight: 800;
      margin-bottom: 6px;
    }

    .media-info p {
      font-size: 13.5px;
      color: var(--text-muted);
    }

    .eval-highlight-box {
      background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
      border: 2.5px solid var(--border-bold);
      border-radius: 16px;
      padding: 30px;
      box-shadow: var(--shadow-pop);
      margin-bottom: 36px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

    .eval-score-view {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .eval-big-num {
      font-size: 56px;
      font-weight: 900;
      color: #b45309;
      line-height: 1;
    }

    .eval-details h3 {
      font-size: 22px;
      font-weight: 800;
      color: #78350f;
    }

    .eval-stars {
      color: #f59e0b;
      font-size: 20px;
      margin: 4px 0;
    }

    .comparison-table-wrap {
      background: #ffffff;
      border: 2px solid var(--border-bold);
      border-radius: var(--radius);
      box-shadow: var(--shadow-pop-sm);
      overflow-x: auto;
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
      min-width: 640px;
    }

    .comparison-table th, .comparison-table td {
      padding: 14px 18px;
      border-bottom: 1px solid #e2e8f0;
    }

    .comparison-table th {
      background: #0f172a;
      color: #ffffff;
      font-weight: 800;
    }

    .comparison-table tr:nth-child(even) {
      background: #f8fafc;
    }

    .comparison-table td.brand-col {
      font-weight: 700;
      color: var(--primary);
      background: #eff6ff;
    }

    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 2px solid var(--border-bold);
      border-radius: var(--radius);
      box-shadow: var(--shadow-pop-sm);
      overflow: hidden;
    }

    .faq-question {
      padding: 18px 22px;
      font-size: 16px;
      font-weight: 800;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #ffffff;
      user-select: none;
    }

    .faq-question:hover {
      background: #f8fafc;
    }

    .faq-toggle-icon {
      font-weight: 900;
      font-size: 18px;
      color: var(--primary);
      transition: transform 0.2s ease;
    }

    .faq-answer {
      display: none;
      padding: 0 22px 18px;
      font-size: 14.5px;
      color: var(--text-muted);
      line-height: 1.65;
      border-top: 1px solid #f1f5f9;
    }

    .faq-item.active .faq-answer {
      display: block;
      padding-top: 14px;
    }

    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }

    .testimonial-card {
      background: #ffffff;
      border: 2px solid var(--border-bold);
      border-radius: var(--radius);
      padding: 22px;
      box-shadow: var(--shadow-pop-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testimonial-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .avatar-initial {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      border: 2px solid var(--border-bold);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 16px;
      color: #ffffff;
    }

    .test-author h4 {
      font-size: 15px;
      font-weight: 800;
    }

    .test-author p {
      font-size: 12.5px;
      color: var(--text-muted);
    }

    .test-quote {
      font-size: 13.5px;
      color: #334155;
      line-height: 1.6;
    }

    .form-container {
      background: #ffffff;
      border: 2.5px solid var(--border-bold);
      border-radius: 16px;
      padding: 32px;
      box-shadow: var(--shadow-pop);
      max-width: 800px;
      margin: 0 auto;
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
      margin-bottom: 18px;
    }

    .form-full {
      margin-bottom: 18px;
    }

    .form-group label {
      display: block;
      font-weight: 700;
      font-size: 13.5px;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      font-size: 14px;
      border: 2px solid var(--border-bold);
      border-radius: 8px;
      background: #f8fafc;
      color: var(--text-main);
      outline: none;
      transition: all 0.2s ease;
    }

    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    }

    textarea.form-control {
      min-height: 110px;
      resize: vertical;
    }

    .network-badge-group {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
      margin-top: 24px;
    }

    .network-badge {
      background: #ffffff;
      border: 2px solid var(--border-bold);
      border-radius: 8px;
      padding: 8px 16px;
      font-size: 13.5px;
      font-weight: 700;
      box-shadow: 2px 2px 0px var(--border-bold);
    }

    .agency-box {
      background: linear-gradient(135deg, #fdf4ff 0%, #fae8ff 100%);
      border: 2.5px solid var(--border-bold);
      border-radius: 16px;
      padding: 32px;
      box-shadow: var(--shadow-pop);
      text-align: center;
    }

    .agency-list {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin: 24px 0;
      text-align: left;
    }

    .agency-item {
      background: #ffffff;
      border: 1.5px solid var(--border-bold);
      border-radius: 10px;
      padding: 16px;
    }

    .agency-item h5 {
      font-size: 15px;
      font-weight: 800;
      margin-bottom: 6px;
      color: var(--accent-violet);
    }

    .agency-item p {
      font-size: 13px;
      color: var(--text-muted);
    }

    .articles-list-box {
      background: #ffffff;
      border: 2px solid var(--border-bold);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-pop-sm);
    }

    .article-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 14px;
    }

    .article-link-item {
      font-size: 13px;
      font-weight: 600;
      background: #eff6ff;
      border: 1px solid #bfdbfe;
      padding: 6px 12px;
      border-radius: 6px;
      color: #1d4ed8;
    }

    .article-link-item:hover {
      background: #2563eb;
      color: #ffffff;
    }

    .site-footer {
      background: #ffffff;
      border-top: 2.5px solid var(--border-bold);
      padding: 56px 0 32px;
      color: var(--text-main);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-col h5 {
      font-size: 16px;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .footer-col p {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 10px;
    }

    .footer-links {
      list-style: none;
    }

    .footer-links li {
      margin-bottom: 8px;
    }

    .footer-links li a {
      font-size: 13.5px;
      color: var(--text-muted);
      font-weight: 600;
    }

    .footer-links li a:hover {
      color: var(--primary);
      text-decoration: underline;
    }

    .qr-container {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .qr-box {
      width: 100px;
      height: 100px;
      border: 2px solid var(--border-bold);
      border-radius: 8px;
      overflow: hidden;
      background: #ffffff;
      padding: 4px;
    }

    .friend-links-area {
      border-top: 1px solid #e2e8f0;
      padding-top: 24px;
      margin-bottom: 24px;
    }

    .friend-links-area .fl-title {
      font-size: 14px;
      font-weight: 800;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .friend-links-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .friend-links-tags a {
      font-size: 13px;
      color: #64748b;
      background: #f1f5f9;
      padding: 4px 10px;
      border-radius: 4px;
      border: 1px solid #e2e8f0;
    }

    .friend-links-tags a:hover {
      color: var(--primary);
      background: #ffffff;
      border-color: var(--primary);
    }

    .footer-bottom {
      border-top: 1px solid #e2e8f0;
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
      color: #64748b;
    }

    .floating-kefu {
      position: fixed;
      right: 20px;
      bottom: 24px;
      z-index: 1000;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      background: #ffffff;
      border: 2px solid var(--border-bold);
      border-radius: 12px;
      box-shadow: var(--shadow-pop-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      cursor: pointer;
      position: relative;
    }

    .float-btn:hover {
      transform: translateY(-3px);
    }

    .float-kefu-pop {
      display: none;
      position: absolute;
      right: 58px;
      bottom: 0;
      background: #ffffff;
      border: 2px solid var(--border-bold);
      border-radius: 12px;
      padding: 12px;
      width: 140px;
      box-shadow: var(--shadow-pop);
      text-align: center;
    }

    .float-btn:hover .float-kefu-pop {
      display: block;
    }

    .float-kefu-pop p {
      font-size: 12px;
      font-weight: 700;
      margin-top: 6px;
      color: var(--text-main);
    }

    @media (max-width: 992px) {
      .hero-container {
        grid-template-columns: 1fr;
      }
      .grid-4, .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .agency-list {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .header-inner {
        position: relative;
      }
      .nav-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 2px solid var(--border-bold);
        flex-direction: column;
        padding: 16px 20px;
        box-shadow: var(--shadow-pop);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
      }
      .grid-4, .grid-3, .grid-2 {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-content h1 {
        font-size: 28px;
      }
      .eval-highlight-box {
        flex-direction: column;
        align-items: flex-start;
      }
      .section-wrap {
        padding: 48px 0;
      }
    }