/* CSS 全局变量：斑斓彩调风 (基于通透纯净浅底的活力多维色彩体系) */
    :root {
      --color-bg-base: #f7f9fc;
      --color-bg-surface: #ffffff;
      --color-bg-surface-elevated: #f0f4f9;
      --color-bg-accent-light: #fef7ee;
      --color-text-main: #141b2d;
      --color-text-sub: #4b5874;
      --color-text-muted: #6b7c96;
      --color-border: #e3e8f0;
      --color-border-hover: #cbd5e1;

      /* 斑斓主题色系 */
      --c-vibrant-indigo: #4338ca;
      --c-vibrant-blue: #2563eb;
      --c-vibrant-cyan: #0284c7;
      --c-vibrant-emerald: #059669;
      --c-vibrant-amber: #d97706;
      --c-vibrant-rose: #e11d48;
      --c-vibrant-purple: #7c3aed;

      --grad-vibrant: linear-gradient(135deg, #4f46e5 0%, #7c3aed 35%, #e11d48 70%, #f59e0b 100%);
      --grad-hero-tag: linear-gradient(90deg, #3b82f6, #8b5cf6, #ec4899);
      --grad-card-border: linear-gradient(135deg, rgba(67, 56, 202, 0.15), rgba(225, 29, 72, 0.12));

      --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 4px 14px rgba(15, 23, 42, 0.07);
      --shadow-lg: 0 10px 25px -4px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.06);

      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-full: 9999px;

      --container-max: 1200px;
      --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
      font-size: 16px;
      -webkit-text-size-adjust: 100%;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--color-bg-base);
      color: var(--color-text-main);
      line-height: 1.65;
      overflow-x: hidden;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition-base);
    }

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

    /* 统一居中容器 */
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 斑斓装饰通顶背景条纹 */
    .rainbow-header-strip {
      height: 4px;
      width: 100%;
      background: var(--grad-vibrant);
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--color-border);
      box-shadow: var(--shadow-sm);
    }

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

    .brand-logo-area {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .brand-logo-area .logo-wrapper {
      max-width: 150px;
      max-height: 44px;
      display: flex;
      align-items: center;
    }

    .brand-logo-area .brand-name {
      font-size: 1.3rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--color-text-main);
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .brand-tag {
      font-size: 0.72rem;
      font-weight: 600;
      padding: 2px 7px;
      border-radius: var(--radius-full);
      background: #eff6ff;
      color: var(--c-vibrant-blue);
      border: 1px solid #bfdbfe;
    }

    /* 严格按照要求设置 .nav-links 的 gap 属性为 0 */
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      margin: 0;
      padding: 0;
      gap: 0;
    }

    .nav-links li a {
      display: inline-block;
      padding: 8px 13px;
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--color-text-sub);
      border-radius: var(--radius-sm);
      transition: var(--transition-base);
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--c-vibrant-indigo);
      background-color: #f1f5f9;
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 18px;
      font-size: 0.92rem;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: var(--transition-base);
      border: 1px solid transparent;
      text-align: center;
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--c-vibrant-indigo), var(--c-vibrant-purple));
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(99, 102, 241, 0.35);
      color: #ffffff;
    }

    .btn-accent {
      background: linear-gradient(135deg, var(--c-vibrant-rose), var(--c-vibrant-amber));
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(225, 29, 72, 0.25);
    }

    .btn-accent:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(225, 29, 72, 0.35);
      color: #ffffff;
    }

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

    .btn-outline:hover {
      border-color: var(--c-vibrant-indigo);
      color: var(--c-vibrant-indigo);
      background: #f8fafc;
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid var(--color-border);
      padding: 8px 10px;
      border-radius: var(--radius-md);
      font-size: 1.1rem;
      cursor: pointer;
      color: var(--color-text-main);
    }

    /* 区域公用类 */
    section {
      padding: 70px 0;
      position: relative;
    }

    .section-head {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 48px;
    }

    .section-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 14px;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      border-radius: var(--radius-full);
      margin-bottom: 14px;
    }

    .pill-blue {
      background: #e0f2fe;
      color: #0369a1;
      border: 1px solid #bae6fd;
    }

    .pill-purple {
      background: #f3e8ff;
      color: #7e22ce;
      border: 1px solid #e9d5ff;
    }

    .pill-emerald {
      background: #d1fae5;
      color: #065f46;
      border: 1px solid #a7f3d0;
    }

    .pill-rose {
      background: #ffe4e6;
      color: #be123c;
      border: 1px solid #fecdd3;
    }

    .pill-amber {
      background: #fef3c7;
      color: #b45309;
      border: 1px solid #fde68a;
    }

    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      color: var(--color-text-main);
      line-height: 1.35;
      margin-bottom: 14px;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--color-text-sub);
      line-height: 1.7;
    }

    /* Hero 首屏 (严格无任何图片资源，采用高阶CSS色彩几何与网格) */
    .hero-section {
      padding: 60px 0 70px;
      background: radial-gradient(circle at 15% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 40%),
                  radial-gradient(circle at 85% 30%, rgba(225, 29, 72, 0.07) 0%, transparent 45%),
                  radial-gradient(circle at 50% 80%, rgba(5, 150, 105, 0.06) 0%, transparent 50%),
                  linear-gradient(180deg, #ffffff 0%, var(--color-bg-base) 100%);
      border-bottom: 1px solid var(--color-border);
      position: relative;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }

    .hero-content {
      position: relative;
      z-index: 2;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid rgba(99, 102, 241, 0.25);
      box-shadow: var(--shadow-sm);
      border-radius: var(--radius-full);
      margin-bottom: 20px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--c-vibrant-indigo);
    }

    .hero-badge .spark-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--c-vibrant-rose);
      box-shadow: 0 0 0 3px rgba(225, 29, 72, 0.2);
    }

    /* H1 字数严格控制在 20 字以内 */
    .hero-title {
      font-size: 2.7rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--color-text-main);
      margin-bottom: 20px;
      letter-spacing: -0.02em;
    }

    .hero-title .text-gradient {
      background: linear-gradient(120deg, #2563eb 0%, #7c3aed 50%, #e11d48 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline;
    }

    .hero-subtitle {
      font-size: 1.12rem;
      color: var(--color-text-sub);
      line-height: 1.75;
      margin-bottom: 30px;
    }

    .hero-btn-group {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
      margin-bottom: 36px;
    }

    .hero-btn-group .btn-lg {
      padding: 14px 30px;
      font-size: 1.05rem;
      border-radius: var(--radius-lg);
    }

    .hero-indicators {
      display: flex;
      align-items: center;
      gap: 24px;
      padding-top: 20px;
      border-top: 1px solid var(--color-border);
    }

    .indicator-item {
      display: flex;
      flex-direction: column;
    }

    .indicator-val {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--color-text-main);
    }

    .indicator-val span {
      color: var(--c-vibrant-rose);
      font-size: 1rem;
    }

    .indicator-label {
      font-size: 0.82rem;
      color: var(--color-text-muted);
    }

    /* 首屏纯CSS构建的控制台与架构交互卡片（无任何外部图片） */
    .hero-visual-card {
      background: #ffffff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-card);
      position: relative;
    }

    .hero-card-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid #f1f5f9;
      padding-bottom: 14px;
      margin-bottom: 18px;
    }

    .card-dots {
      display: flex;
      gap: 6px;
    }

    .card-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }

    .card-dot.r { background: #ef4444; }
    .card-dot.y { background: #f59e0b; }
    .card-dot.g { background: #10b981; }

    .card-status {
      font-size: 0.78rem;
      font-weight: 600;
      padding: 2px 10px;
      border-radius: var(--radius-full);
      background: #ecfdf5;
      color: #047857;
      border: 1px solid #a7f3d0;
    }

    .methodology-block {
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 16px;
      margin-bottom: 16px;
    }

    .method-label {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--c-vibrant-indigo);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .method-formula {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--color-text-main);
      background: #ffffff;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      border: 1px dashed #cbd5e1;
      margin-bottom: 8px;
    }

    .method-formula mark {
      background: #fef3c7;
      color: #b45309;
      padding: 1px 4px;
      border-radius: 3px;
    }

    .stream-items {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
    }

    .stream-cell {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      padding: 12px;
      border-radius: var(--radius-md);
      transition: var(--transition-base);
    }

    .stream-cell:hover {
      border-color: var(--c-vibrant-indigo);
      box-shadow: var(--shadow-sm);
    }

    .cell-title {
      font-size: 0.85rem;
      font-weight: 700;
      margin-bottom: 4px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .cell-desc {
      font-size: 0.75rem;
      color: var(--color-text-muted);
      line-height: 1.4;
    }

    /* 平台矩阵标签条 */
    .model-ticker-section {
      background: #ffffff;
      padding: 24px 0;
      border-bottom: 1px solid var(--color-border);
    }

    .ticker-title {
      text-align: center;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--color-text-muted);
      margin-bottom: 14px;
      letter-spacing: 0.05em;
    }

    .ticker-chips {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
    }

    .chip {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 5px 12px;
      font-size: 0.82rem;
      font-weight: 600;
      border-radius: var(--radius-full);
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      color: var(--color-text-sub);
      transition: var(--transition-base);
    }

    .chip:hover {
      background: #eef2ff;
      border-color: #c7d2fe;
      color: var(--c-vibrant-indigo);
      transform: translateY(-1px);
    }

    /* 卡片网格通用 */
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

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

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

    .feature-card {
      background: #ffffff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition-base);
      display: flex;
      flex-direction: column;
      position: relative;
      overflow: hidden;
    }

    .feature-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: transparent;
      transition: var(--transition-base);
    }

    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: #cbd5e1;
    }

    .feature-card:hover::before {
      background: var(--grad-vibrant);
    }

    .card-icon-box {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      font-size: 1.3rem;
    }

    .c-blue-box { background: #dbeafe; color: #1d4ed8; }
    .c-purple-box { background: #f3e8ff; color: #7e22ce; }
    .c-emerald-box { background: #d1fae5; color: #047857; }
    .c-rose-box { background: #ffe4e6; color: #be123c; }
    .c-amber-box { background: #fef3c7; color: #b45309; }
    .c-cyan-box { background: #cffafe; color: #0e7490; }

    .card-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--color-text-main);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .card-badge {
      font-size: 0.72rem;
      padding: 2px 8px;
      border-radius: var(--radius-full);
      font-weight: 600;
    }

    .card-desc {
      font-size: 0.92rem;
      color: var(--color-text-sub);
      line-height: 1.65;
      flex-grow: 1;
      margin-bottom: 16px;
    }

    .card-meta-list {
      list-style: none;
      padding: 0;
      margin: 0;
      border-top: 1px dashed var(--color-border);
      padding-top: 12px;
      font-size: 0.82rem;
      color: var(--color-text-muted);
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .card-meta-list li {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .card-meta-list li::before {
      content: '✓';
      color: var(--c-vibrant-emerald);
      font-weight: bold;
    }

    /* 关于我们与平台介绍图文区 */
    .split-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .image-container-styled {
      background: #ffffff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: 10px;
      box-shadow: var(--shadow-md);
      overflow: hidden;
    }

    .image-container-styled img {
      border-radius: var(--radius-md);
      width: 100%;
      height: auto;
      object-fit: cover;
    }

    .content-block-styled h3 {
      font-size: 1.65rem;
      font-weight: 800;
      color: var(--color-text-main);
      margin-bottom: 16px;
      line-height: 1.35;
    }

    .content-block-styled p {
      font-size: 0.98rem;
      color: var(--color-text-sub);
      line-height: 1.75;
      margin-bottom: 16px;
    }

    .spec-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
      margin-top: 20px;
    }

    .spec-box {
      background: #f8fafc;
      padding: 12px 16px;
      border-radius: var(--radius-md);
      border-left: 3px solid var(--c-vibrant-indigo);
    }

    .spec-box.accent-rose { border-left-color: var(--c-vibrant-rose); }
    .spec-box.accent-emerald { border-left-color: var(--c-vibrant-emerald); }
    .spec-box.accent-amber { border-left-color: var(--c-vibrant-amber); }

    .spec-box strong {
      display: block;
      font-size: 0.9rem;
      color: var(--color-text-main);
      margin-bottom: 2px;
    }

    .spec-box span {
      font-size: 0.8rem;
      color: var(--color-text-muted);
    }

    /* 流程步骤 */
    .step-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-card {
      background: #ffffff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: 24px 20px;
      box-shadow: var(--shadow-sm);
      position: relative;
      transition: var(--transition-base);
    }

    .step-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: var(--c-vibrant-indigo);
    }

    .step-num {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: var(--grad-vibrant);
      color: #ffffff;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
      margin-bottom: 16px;
    }

    .step-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--color-text-main);
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 0.88rem;
      color: var(--color-text-sub);
      line-height: 1.6;
    }

    /* 对比评测卡片与表格 */
    .eval-highlight-banner {
      background: linear-gradient(135deg, #eff6ff 0%, #faf5ff 50%, #fff1f2 100%);
      border: 1px solid #bfdbfe;
      border-radius: var(--radius-lg);
      padding: 28px;
      margin-bottom: 36px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

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

    .score-circle {
      width: 76px;
      height: 76px;
      border-radius: 50%;
      background: var(--grad-vibrant);
      color: #ffffff;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
      flex-shrink: 0;
    }

    .score-circle .big-num { font-size: 1.65rem; line-height: 1; }
    .score-circle .out-of { font-size: 0.68rem; opacity: 0.9; }

    .eval-rating-info h4 {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--color-text-main);
      margin-bottom: 4px;
    }

    .star-row {
      color: #f59e0b;
      font-size: 1.15rem;
      letter-spacing: 2px;
      margin-bottom: 4px;
    }

    .table-wrapper {
      background: #ffffff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.92rem;
    }

    .eval-table th,
    .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--color-border);
    }

    .eval-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--color-text-main);
    }

    .eval-table tr:last-child td {
      border-bottom: none;
    }

    .eval-table tr:hover td {
      background-color: #fafbfc;
    }

    .badge-highlight {
      display: inline-block;
      padding: 3px 10px;
      border-radius: var(--radius-full);
      font-weight: 700;
      font-size: 0.78rem;
      background: #dcfce7;
      color: #15803d;
      border: 1px solid #bbf7d0;
    }

    /* FAQ 折叠面板 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition-base);
    }

    .faq-item.active {
      border-color: var(--c-vibrant-indigo);
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      width: 100%;
      padding: 18px 22px;
      background: none;
      border: none;
      text-align: left;
      font-size: 1.02rem;
      font-weight: 700;
      color: var(--color-text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }

    .faq-question:hover {
      color: var(--c-vibrant-indigo);
    }

    .faq-icon {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: #f1f5f9;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      transition: transform 0.25s ease;
      font-weight: bold;
      color: var(--color-text-sub);
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      background: #fee2e2;
      color: #dc2626;
    }

    .faq-answer {
      padding: 0 22px 18px 22px;
      color: var(--color-text-sub);
      font-size: 0.94rem;
      line-height: 1.7;
      display: none;
      border-top: 1px solid #f8fafc;
      margin-top: 4px;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    /* 用户评论卡片 */
    .review-card {
      background: #ffffff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition-base);
    }

    .review-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: #cbd5e1;
    }

    .review-quote {
      font-size: 0.94rem;
      color: var(--color-text-sub);
      line-height: 1.7;
      margin-bottom: 20px;
      position: relative;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }

    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--grad-vibrant);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
      flex-shrink: 0;
    }

    .author-info h5 {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--color-text-main);
    }

    .author-info p {
      font-size: 0.78rem;
      color: var(--color-text-muted);
    }

    /* 需求表单模块 */
    .contact-form-container {
      background: #ffffff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--color-text-main);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.95rem;
      color: var(--color-text-main);
      background-color: #f8fafc;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      transition: var(--transition-base);
      font-family: inherit;
    }

    .form-control:focus {
      outline: none;
      background-color: #ffffff;
      border-color: var(--c-vibrant-indigo);
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 120px;
    }

    .contact-side-info {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .info-card {
      background: #ffffff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-sm);
    }

    .info-card h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--color-text-main);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .info-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.9rem;
      color: var(--color-text-sub);
      margin-bottom: 8px;
    }

    .qr-wrapper {
      max-width: 140px;
      padding: 6px;
      background: #ffffff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      margin-top: 10px;
    }

    /* 文章列表 & 友情链接 */
    .article-links-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }

    .article-link-item {
      background: #ffffff;
      border: 1px solid var(--color-border);
      padding: 16px;
      border-radius: var(--radius-md);
      display: block;
      transition: var(--transition-base);
    }

    .article-link-item:hover {
      border-color: var(--c-vibrant-indigo);
      box-shadow: var(--shadow-sm);
      transform: translateY(-2px);
    }

    .article-link-item .title {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--color-text-main);
      margin-bottom: 6px;
    }

    .article-link-item .url-ref {
      font-size: 0.78rem;
      color: var(--color-text-muted);
      word-break: break-all;
    }

    /* 页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--color-border);
      padding: 50px 0 30px;
      margin-top: auto;
      color: var(--color-text-sub);
    }

    .footer-top {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 30px;
      margin-bottom: 40px;
    }

    .footer-brand p {
      font-size: 0.9rem;
      color: var(--color-text-muted);
      line-height: 1.7;
      margin-top: 14px;
      max-width: 320px;
    }

    .footer-col h4 {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--color-text-main);
      margin-bottom: 18px;
      position: relative;
    }

    .footer-links-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links-list li a {
      font-size: 0.88rem;
      color: var(--color-text-sub);
    }

    .footer-links-list li a:hover {
      color: var(--c-vibrant-indigo);
      padding-left: 3px;
    }

    .friendly-links-flex {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 8px;
    }

    .friendly-links-flex a {
      font-size: 0.84rem;
      background: #f1f5f9;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      color: var(--color-text-sub);
    }

    .friendly-links-flex a:hover {
      background: #e2e8f0;
      color: var(--c-vibrant-indigo);
    }

    .footer-bottom {
      border-top: 1px solid #f1f5f9;
      padding-top: 24px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      font-size: 0.84rem;
      color: var(--color-text-muted);
    }

    .footer-legal-links {
      display: flex;
      gap: 16px;
    }

    .footer-legal-links a:hover {
      color: var(--c-vibrant-indigo);
    }

    /* 浮动客服挂件 & 返回顶部 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 24px;
      z-index: 990;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-size: 1.2rem;
      color: var(--color-text-main);
      transition: var(--transition-base);
    }

    .float-btn:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-lg);
      background: var(--c-vibrant-indigo);
      color: #ffffff;
      border-color: var(--c-vibrant-indigo);
    }

    .float-btn.active-kefu {
      background: var(--c-vibrant-emerald);
      color: #ffffff;
      border-color: var(--c-vibrant-emerald);
    }

    /* 模态弹层 (客服二维码) */
    .kefu-modal-backdrop {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(15, 23, 42, 0.45);
      backdrop-filter: blur(4px);
      z-index: 2000;
      align-items: center;
      justify-content: center;
    }

    .kefu-modal-backdrop.show {
      display: flex;
    }

    .kefu-modal-content {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 28px;
      max-width: 360px;
      width: 90%;
      text-align: center;
      box-shadow: var(--shadow-card);
      position: relative;
    }

    .modal-close-btn {
      position: absolute;
      top: 14px;
      right: 14px;
      background: none;
      border: none;
      font-size: 1.3rem;
      cursor: pointer;
      color: var(--color-text-muted);
    }

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .hero-grid,
      .split-layout {
        grid-template-columns: 1fr;
        gap: 36px;
      }

      .step-timeline,
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }

      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }

      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 16px 20px;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-md);
      }

      .nav-links.mobile-active {
        display: flex;
      }

      .nav-links li {
        width: 100%;
      }

      .nav-links li a {
        display: block;
        padding: 12px 14px;
      }

      .mobile-menu-btn {
        display: block;
      }

      .hero-title {
        font-size: 2rem;
      }

      .grid-2,
      .grid-3,
      .grid-4,
      .step-timeline,
      .article-links-grid {
        grid-template-columns: 1fr;
      }

      .footer-top {
        grid-template-columns: 1fr;
      }

      .hero-indicators {
        flex-wrap: wrap;
        gap: 16px;
      }
    }