/* docs.html —— 由内联样式抽出 */
* { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body { margin: 0; background: #fff; color: #1F2329; font-family: 'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif; line-height: 1.6; -webkit-font-smoothing: antialiased; }
    a { color: inherit; text-decoration: none; }
    button { font-family: inherit; cursor: pointer; }
    img { max-width: 100%; }
  .oa-page {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #eff6ff;
    --text-1: #0f172a;
    --text-2: #475569;
    --text-3: #94a3b8;
    --bg: #ffffff;
    --bg-soft: #f8fafc;
    --border: #e2e8f0;
    --radius: 12px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  }
  .oa-page .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
  }
  .oa-page .hero {
    position: relative;
    overflow: hidden;
    background: var(--bg-soft);
  }
  .oa-page .hero-bg {
    position: absolute;
    top: 0; right: 0;
    width: 60%;
    height: 100%;
    background: url('/assets/media/page-hero-bg.jpg') center/cover no-repeat;
    opacity: 0.9;
  }
  .oa-page .hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, var(--bg-soft) 0%, rgba(248,250,252,0.3) 50%, transparent 100%);
  }
  .oa-page .hero-inner {
    position: relative;
    z-index: 1;
    padding: 100px 0 120px;
  }
  .oa-page .hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
  }
  .oa-page .hero-tag::before {
    content: '';
    width: 6px; height: 6px;
    background: var(--primary);
    border-radius: 50%;
  }
  .oa-page .hero h1 {
    font-size: 48px;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 20px;
    max-width: 560px;
  }
  .oa-page .hero h1 .highlight { color: var(--primary); }
  .oa-page .hero p {
    font-size: 17px;
    color: var(--text-2);
    max-width: 500px;
    margin-bottom: 36px;
    line-height: 1.8;
  }
  .oa-page .hero-buttons { display: flex; gap: 16px; }
  .oa-page .section { padding: 80px 0; }
  .oa-page .section-alt { background: var(--bg-soft); }
  .oa-page .section-head {
    text-align: center;
    margin-bottom: 56px;
  }
  .oa-page .section-head h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
  }
  .oa-page .section-head p {
    font-size: 16px;
    color: var(--text-2);
    max-width: 600px;
    margin: 0 auto;
  }
  .oa-page .plans-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .oa-page .plan-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: all 0.3s;
  }
  .oa-page .plan-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
  }
  .oa-page .plan-card.featured {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
  }
  .oa-page .plan-icon {
    width: 52px; height: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
  }
  .oa-page .plan-icon svg { width: 26px; height: 26px; }
  .oa-page .plan-icon.blue { background: var(--primary-light); }
  .oa-page .plan-icon.blue svg { fill: var(--primary); }
  .oa-page .plan-icon.green { background: #f0fdf4; }
  .oa-page .plan-icon.green svg { fill: #16a34a; }
  .oa-page .plan-icon.orange { background: #fff7ed; }
  .oa-page .plan-icon.orange svg { fill: #ea580c; }
  .oa-page .plan-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
  }
  .oa-page .plan-card .desc {
    font-size: 14px;
    color: var(--text-2);
    margin-bottom: 20px;
    line-height: 1.7;
  }
  .oa-page .plan-card ul {
    list-style: none;
    margin-bottom: 24px;
  }
  .oa-page .plan-card ul li {
    font-size: 14px;
    color: var(--text-2);
    padding: 6px 0;
    padding-left: 22px;
    position: relative;
  }
  .oa-page .plan-card ul li::before {
    content: '';
    position: absolute;
    left: 0; top: 12px;
    width: 14px; height: 14px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%232563eb'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E") center/contain no-repeat;
  }
  .oa-page .plan-card .plan-link {
    color: var(--primary);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
  }
  .oa-page .plan-card .plan-link:hover { gap: 8px; }
  .oa-page .scenes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
  .oa-page .scene-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 24px;
    display: flex;
    gap: 16px;
    align-items: flex-start;
    transition: all 0.2s;
  }
  .oa-page .scene-item:hover {
    border-color: var(--primary);
    background: var(--primary-light);
  }
  .oa-page .scene-icon {
    flex-shrink: 0;
    width: 44px; height: 44px;
    border-radius: 10px;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .oa-page .scene-icon svg { width: 22px; height: 22px; fill: var(--primary); }
  .oa-page .scene-item h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
  }
  .oa-page .scene-item p {
    font-size: 13px;
    color: var(--text-2);
    line-height: 1.6;
  }
  .oa-page .steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    position: relative;
  }
  .oa-page .steps::before {
    content: '';
    position: absolute;
    top: 28px;
    left: 12%;
    right: 12%;
    height: 2px;
    background: var(--border);
    z-index: 0;
  }
  .oa-page .step {
    text-align: center;
    position: relative;
    z-index: 1;
    padding: 0 16px;
  }
  .oa-page .step-num {
    width: 56px; height: 56px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--primary);
    color: var(--primary);
    font-size: 22px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
  }
  .oa-page .step h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
  }
  .oa-page .step p {
    font-size: 13px;
    color: var(--text-2);
    line-height: 1.6;
  }
  .oa-page .cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 72px 0;
    text-align: center;
    color: #fff;
  }
  .oa-page .cta-section h2 {
    font-size: 30px;
    font-weight: 700;
    margin-bottom: 14px;
  }
  .oa-page .cta-section p {
    font-size: 16px;
    opacity: 0.85;
    margin-bottom: 32px;
  }
  .oa-page .cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
  }
  .oa-page .btn-white {
    background: #fff;
    color: var(--primary);
  }
  .oa-page .btn-white:hover { background: #f1f5f9; }
  .oa-page .btn-ghost-white {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255,255,255,0.4);
  }
  .oa-page .btn-ghost-white:hover { background: rgba(255,255,255,0.1); }


  /* ===== 响应式 ===== */
  @media (max-width: 900px) {  .oa-page .hero h1 { font-size: 32px; }
  .oa-page .hero-bg { width: 100%; opacity: 0.3; }
  .oa-page .plans-grid, .oa-page .scenes-grid { grid-template-columns: 1fr; }
  .oa-page .steps { grid-template-columns: repeat(2, 1fr); gap: 32px 0; }
  .oa-page .steps::before { display: none; }


  }