/* roulang page: index */
:root {
      --primary: #4F46E5;
      --primary-dark: #3730A3;
      --primary-light: #EEF2FF;
      --secondary: #06B6D4;
      --accent: #EC4899;
      --accent-gradient: linear-gradient(135deg, #4F46E5 0%, #7C3AED 50%, #EC4899 100%);
      --bg-main: #F8FAFC;
      --bg-card: #FFFFFF;
      --bg-alt: #EEF2F6;
      --text-main: #0F172A;
      --text-muted: #334155;
      --text-light: #64748B;
      --border-color: #E2E8F0;
      --radius-card: 20px;
      --radius-pill: 9999px;
      --radius-badge: 8px;
      --shadow-base: 0 10px 25px -5px rgba(15, 23, 42, 0.05), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
      --shadow-hover: 0 20px 30px -10px rgba(79, 70, 229, 0.15);
    }
    *, *::before, *::after { box-sizing: border-box; }
    body {
      margin: 0;
      padding: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
    img { max-width: 100%; height: auto; display: block; }
    .site-container { max-width: 1240px; margin: 0 auto; padding: 0 1.25rem; }
    
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-color);
      padding: 0.75rem 0;
    }
    .nav-flex {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1.5rem;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      font-size: 1.35rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--text-main);
      white-space: nowrap;
    }
    .brand-logo-icon {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: var(--accent-gradient);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
    }
    .search-nav-wrap {
      flex: 1;
      max-width: 580px;
      position: relative;
    }
    .search-nav-wrap input {
      width: 100%;
      height: 44px;
      margin: 0;
      padding: 0 5.5rem 0 2.75rem;
      background: #F1F5F9;
      border: 1px solid transparent;
      border-radius: var(--radius-pill);
      font-size: 0.875rem;
      color: var(--text-main);
      transition: all 0.2s;
    }
    .search-nav-wrap input:focus {
      outline: none;
      background: #FFFFFF;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
    }
    .search-icon-pos {
      position: absolute;
      left: 1rem;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-light);
      pointer-events: none;
    }
    .search-btn-pos {
      position: absolute;
      right: 4px;
      top: 4px;
      height: 36px;
      padding: 0 1.1rem;
      background: var(--primary);
      color: #fff;
      font-size: 0.8rem;
      font-weight: 600;
      border: none;
      border-radius: var(--radius-pill);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: background 0.2s;
    }
    .search-btn-pos:hover { background: var(--primary-dark); }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 1.25rem;
      white-space: nowrap;
    }
    .nav-links a {
      font-size: 0.925rem;
      font-weight: 600;
      color: var(--text-muted);
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--primary);
    }
    .nav-sub-btn {
      padding: 0.45rem 1rem;
      font-size: 0.825rem;
      font-weight: 600;
      border-radius: var(--radius-pill);
      background: rgba(79, 70, 229, 0.08);
      color: var(--primary);
      border: 1px solid rgba(79, 70, 229, 0.2);
    }
    .nav-sub-btn:hover {
      background: var(--primary);
      color: #fff;
    }

    .main-section {
      padding: 4.5rem 0;
      position: relative;
    }
    .main-section.alt-bg { background-color: var(--bg-alt); }
    .section-header {
      margin-bottom: 2.75rem;
      max-width: 760px;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      padding: 0.3rem 0.85rem;
      font-size: 0.75rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      border-radius: var(--radius-badge);
      background: rgba(79, 70, 229, 0.08);
      color: var(--primary);
      border: 1px solid rgba(79, 70, 229, 0.15);
      margin-bottom: 0.85rem;
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 0.75rem;
      letter-spacing: -0.02em;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--text-light);
      line-height: 1.65;
      margin: 0;
    }

    .hero-panel {
      padding: 5rem 0 4.5rem;
      background: #0B0F19;
      color: #F8FAFC;
      position: relative;
      overflow: hidden;
    }
    .hero-bg-overlay {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/d4d19cb089f33ae2.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.18;
      filter: blur(2px);
    }
    .hero-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 3rem;
      align-items: center;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      padding: 0.35rem 0.95rem;
      border-radius: var(--radius-pill);
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.2);
      font-size: 0.8rem;
      color: #E0E7FF;
      margin-bottom: 1.5rem;
    }
    .hero-title {
      font-size: 2.75rem;
      font-weight: 900;
      line-height: 1.18;
      margin-bottom: 1.25rem;
      letter-spacing: -0.03em;
      color: #FFFFFF;
    }
    .hero-title span {
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-p {
      font-size: 1.05rem;
      line-height: 1.7;
      color: #94A3B8;
      margin-bottom: 2rem;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 1rem;
      margin-bottom: 2.25rem;
    }
    .btn-brand-solid {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.85rem 1.85rem;
      font-size: 0.95rem;
      font-weight: 700;
      border-radius: var(--radius-pill);
      background: var(--accent-gradient);
      color: #fff;
      box-shadow: 0 10px 20px rgba(124, 58, 237, 0.3);
    }
    .btn-brand-solid:hover {
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 14px 26px rgba(124, 58, 237, 0.45);
    }
    .btn-ghost-light {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.85rem 1.75rem;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-pill);
      border: 1px solid rgba(255, 255, 255, 0.25);
      color: #F8FAFC;
      background: rgba(255, 255, 255, 0.05);
    }
    .btn-ghost-light:hover {
      background: rgba(255, 255, 255, 0.15);
      color: #fff;
    }
    .hero-stats-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      padding-top: 1.5rem;
    }
    .hero-stat-num {
      font-size: 1.5rem;
      font-weight: 800;
      color: #38BDF8;
      display: block;
    }
    .hero-stat-label {
      font-size: 0.775rem;
      color: #94A3B8;
    }

    .code-mockup-card {
      background: #030712;
      border: 1px solid #1F2937;
      border-radius: 16px;
      overflow: hidden;
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
    }
    .mockup-header {
      padding: 0.85rem 1.25rem;
      background: #111827;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid #1F2937;
    }
    .mockup-dots {
      display: flex;
      gap: 6px;
    }
    .mockup-dots span {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }
    .mockup-dots span:nth-child(1) { background: #EF4444; }
    .mockup-dots span:nth-child(2) { background: #F59E0B; }
    .mockup-dots span:nth-child(3) { background: #10B981; }
    .mockup-title {
      font-size: 0.75rem;
      font-family: monospace;
      color: #9CA3AF;
    }
    .mockup-body {
      padding: 1.25rem;
      font-family: "Fira Code", Consolas, Monaco, monospace;
      font-size: 0.85rem;
      color: #E2E8F0;
      line-height: 1.7;
    }
    .code-comment { color: #6B7280; }
    .code-keyword { color: #EC4899; }
    .code-string { color: #34D399; }
    .code-func { color: #60A5FA; }

    .base-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-card);
      padding: 2rem;
      box-shadow: var(--shadow-base);
      transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .base-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    .pain-card {
      border-left: 4px solid #EF4444;
      background: #FFF;
      border-radius: 12px;
      padding: 1.5rem;
      border-top: 1px solid var(--border-color);
      border-right: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .pain-num {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 800;
      color: #EF4444;
      margin-bottom: 0.35rem;
    }
    .pain-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.5rem;
    }
    .pain-sol {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin: 0;
    }

    .cap-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.25rem;
    }
    .cap-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
    }
    .cap-text {
      font-size: 0.925rem;
      color: var(--text-light);
      line-height: 1.6;
      margin-bottom: 1.25rem;
      flex: 1;
    }
    .cap-badge-row {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .cap-badge {
      font-size: 0.75rem;
      padding: 0.2rem 0.6rem;
      border-radius: 6px;
      background: var(--bg-alt);
      color: var(--text-muted);
      font-weight: 600;
    }

    .param-table-card {
      background: #FFFFFF;
      border-radius: var(--radius-card);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-base);
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      margin: 0;
      font-size: 0.925rem;
    }
    .custom-table th {
      background: #F8FAFC;
      padding: 1.1rem 1.5rem;
      text-align: left;
      font-weight: 700;
      color: var(--text-main);
      border-bottom: 1px solid var(--border-color);
    }
    .custom-table td {
      padding: 1.1rem 1.5rem;
      color: var(--text-muted);
      border-bottom: 1px solid var(--border-color);
      vertical-align: middle;
    }
    .custom-table tr:last-child td { border-bottom: none; }
    .custom-table .highlight-col {
      color: var(--primary);
      font-weight: 600;
    }

    .case-card {
      border-radius: var(--radius-card);
      overflow: hidden;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-base);
      display: flex;
      flex-direction: column;
    }
    .case-img-wrap {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .case-card:hover .case-img-wrap img {
      transform: scale(1.05);
    }
    .case-content {
      padding: 1.75rem;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .case-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.65rem;
    }
    .case-desc {
      font-size: 0.9rem;
      color: var(--text-light);
      line-height: 1.6;
      margin-bottom: 1.25rem;
      flex: 1;
    }
    .case-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid var(--border-color);
      padding-top: 1rem;
      font-size: 0.8rem;
      color: var(--text-light);
    }

    .step-item-card {
      position: relative;
      background: #FFFFFF;
      border-radius: var(--radius-card);
      padding: 2rem;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-base);
    }
    .step-num-circle {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--accent-gradient);
      color: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      margin-bottom: 1.25rem;
    }
    .step-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.5rem;
    }
    .step-text {
      font-size: 0.9rem;
      color: var(--text-light);
      line-height: 1.6;
      margin: 0;
    }

    .metrics-gradient-banner {
      background: var(--accent-gradient);
      border-radius: 24px;
      padding: 3.5rem 2.5rem;
      color: #FFFFFF;
      box-shadow: 0 20px 40px -15px rgba(124, 58, 237, 0.4);
    }
    .metric-grid-cell {
      text-align: center;
      padding: 1rem;
    }
    .metric-big-num {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1;
      margin-bottom: 0.5rem;
      letter-spacing: -0.03em;
    }
    .metric-cell-label {
      font-size: 1.05rem;
      font-weight: 600;
      opacity: 0.95;
      margin-bottom: 0.25rem;
    }
    .metric-cell-sub {
      font-size: 0.8rem;
      opacity: 0.8;
      margin: 0;
    }

    .testi-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 1.75rem;
      box-shadow: var(--shadow-base);
    }
    .testi-header {
      display: flex;
      align-items: center;
      gap: 0.85rem;
      margin-bottom: 1rem;
    }
    .testi-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--bg-alt);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }
    .testi-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin: 0;
    }
    .testi-tag {
      font-size: 0.75rem;
      color: var(--text-light);
      margin: 0;
    }
    .testi-body {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin: 0;
    }

    .device-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-card);
      padding: 1.75rem;
      display: flex;
      gap: 1.5rem;
      align-items: flex-start;
      box-shadow: var(--shadow-base);
    }
    .device-icon-box {
      width: 56px;
      height: 56px;
      border-radius: 14px;
      background: rgba(6, 182, 212, 0.1);
      color: var(--secondary);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }
    .device-name {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.4rem;
    }
    .device-desc {
      font-size: 0.875rem;
      color: var(--text-light);
      line-height: 1.55;
      margin: 0;
    }

    .article-cms-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      overflow: hidden;
      box-shadow: var(--shadow-base);
      display: flex;
      flex-direction: column;
      height: 100%;
      transition: transform 0.25s, box-shadow 0.25s;
    }
    .article-cms-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
    }
    .article-cms-thumb {
      height: 160px;
      overflow: hidden;
      position: relative;
      background: #1E293B;
    }
    .article-cms-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .article-cms-body {
      padding: 1.25rem;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .article-cms-date {
      font-size: 0.75rem;
      color: var(--text-light);
      margin-bottom: 0.5rem;
    }
    .article-cms-title {
      font-size: 1.05rem;
      font-weight: 700;
      line-height: 1.4;
      color: var(--text-main);
      margin-bottom: 0.65rem;
    }
    .article-cms-title a:hover { color: var(--primary); }
    .article-cms-summary {
      font-size: 0.85rem;
      color: var(--text-light);
      line-height: 1.6;
      margin-bottom: 1rem;
      flex: 1;
    }
    .article-cms-link {
      font-size: 0.825rem;
      font-weight: 700;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 0.25rem;
    }
    .empty-cms-notice {
      padding: 3rem;
      text-align: center;
      background: #FFFFFF;
      border: 1px dashed var(--border-color);
      border-radius: 16px;
      color: var(--text-light);
    }

    .cat-entry-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 1.5rem;
      text-align: center;
      box-shadow: var(--shadow-base);
      display: block;
      transition: all 0.25s;
    }
    .cat-entry-card:hover {
      transform: translateY(-4px);
      border-color: var(--primary);
      box-shadow: var(--shadow-hover);
    }
    .cat-entry-icon {
      width: 48px;
      height: 48px;
      margin: 0 auto 1rem;
      border-radius: 12px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .cat-entry-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.35rem;
    }
    .cat-entry-meta {
      font-size: 0.8rem;
      color: var(--text-light);
      margin: 0;
    }

    .newsletter-digest-card {
      background: #FFFFFF;
      border: 2px dashed rgba(79, 70, 229, 0.3);
      border-radius: var(--radius-card);
      padding: 2.5rem;
      box-shadow: var(--shadow-base);
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2.5rem;
      align-items: center;
    }
    .digest-tag {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--accent);
      margin-bottom: 0.5rem;
    }
    .digest-title {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 0.85rem;
    }
    .digest-desc {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1.5rem;
    }
    .digest-item-list {
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }
    .digest-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0.75rem 1rem;
      background: var(--bg-alt);
      border-radius: 10px;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-main);
    }
    .digest-row-badge {
      font-size: 0.75rem;
      padding: 0.15rem 0.5rem;
      border-radius: 4px;
      background: #FFFFFF;
      color: var(--primary);
      border: 1px solid var(--border-color);
    }

    .final-cta-wrap {
      background: #0F172A;
      border-radius: 24px;
      padding: 4.5rem 2rem;
      text-align: center;
      color: #FFFFFF;
      position: relative;
      overflow: hidden;
      border: 1px solid #1E293B;
    }
    .final-cta-glow {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 600px;
      height: 300px;
      background: radial-gradient(circle, rgba(124, 58, 237, 0.25) 0%, rgba(15, 23, 42, 0) 70%);
      pointer-events: none;
    }
    .final-cta-title {
      font-size: 2.4rem;
      font-weight: 900;
      color: #FFFFFF;
      margin-bottom: 1rem;
      position: relative;
      z-index: 2;
    }
    .final-cta-desc {
      max-width: 680px;
      margin: 0 auto 2rem;
      font-size: 1.05rem;
      color: #94A3B8;
      line-height: 1.7;
      position: relative;
      z-index: 2;
    }
    .final-form-box {
      max-width: 520px;
      margin: 0 auto;
      display: flex;
      gap: 0.75rem;
      position: relative;
      z-index: 2;
    }
    .final-form-box input {
      flex: 1;
      height: 48px;
      border-radius: var(--radius-pill);
      padding: 0 1.25rem;
      background: #1E293B;
      border: 1px solid #334155;
      color: #FFFFFF;
      font-size: 0.9rem;
      margin: 0;
    }
    .final-form-box input:focus {
      outline: none;
      border-color: var(--primary);
      background: #0F172A;
    }
    .final-form-box button {
      height: 48px;
      padding: 0 1.75rem;
      border-radius: var(--radius-pill);
      background: var(--accent-gradient);
      color: #FFFFFF;
      font-weight: 700;
      border: none;
      cursor: pointer;
      white-space: nowrap;
      transition: opacity 0.2s;
    }
    .final-form-box button:hover { opacity: 0.9; }

    .site-footer {
      background: #0B0F19;
      color: #94A3B8;
      padding: 4.5rem 0 2rem;
      border-top: 1px solid #1E293B;
    }
    .footer-top-card {
      background: #111827;
      border: 1px solid #1F2937;
      border-radius: var(--radius-card);
      padding: 2.5rem;
      margin-bottom: 4rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 2rem;
    }
    .footer-top-text h3 {
      color: #FFFFFF;
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 0.35rem;
    }
    .footer-top-text p {
      font-size: 0.9rem;
      color: #9CA3AF;
      margin: 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr repeat(3, 1fr);
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 0.75rem;
      font-size: 0.875rem;
    }
    .footer-links a:hover { color: #FFFFFF; }
    .footer-bottom-bar {
      border-top: 1px solid #1F2937;
      padding-top: 2rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.825rem;
      color: #64748B;
    }

    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
      .newsletter-digest-card { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
    }
    @media (max-width: 768px) {
      .main-section { padding: 3rem 0; }
      .section-title { font-size: 1.75rem; }
      .hero-title { font-size: 2.15rem; }
      .search-nav-wrap { max-width: 100%; order: 3; width: 100%; margin-top: 0.5rem; }
      .nav-flex { flex-wrap: wrap; }
      .hero-stats-row { grid-template-columns: 1fr; gap: 1rem; }
      .footer-top-card { flex-direction: column; text-align: center; }
      .final-form-box { flex-direction: column; }
      .final-form-box button { width: 100%; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom-bar { flex-direction: column; gap: 1rem; text-align: center; }
    }

/* roulang page: category1 */
:root {
      --primary: #4F46E5;
      --primary-dark: #3730A3;
      --primary-light: #EEF2FF;
      --secondary: #06B6D4;
      --accent: #EC4899;
      --accent-gradient: linear-gradient(135deg, #4F46E5 0%, #7C3AED 50%, #EC4899 100%);
      --bg-main: #F8FAFC;
      --bg-card: #FFFFFF;
      --bg-alt: #EEF2F6;
      --text-main: #0F172A;
      --text-muted: #334155;
      --text-light: #64748B;
      --border-color: #E2E8F0;
      --radius-card: 20px;
      --radius-pill: 9999px;
      --radius-badge: 8px;
      --shadow-base: 0 10px 25px -5px rgba(15, 23, 42, 0.05), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
      --shadow-hover: 0 20px 30px -10px rgba(79, 70, 229, 0.15);
    }
    body {
      margin: 0;
      padding: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
    img { max-width: 100%; height: auto; display: block; }
    .site-container { max-width: 1240px; margin: 0 auto; padding: 0 1.25rem; }
    
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-color);
      padding: 0.75rem 0;
    }
    .nav-flex {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1.5rem;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      font-size: 1.35rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--text-main);
      white-space: nowrap;
    }
    .brand-logo-icon {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: var(--accent-gradient);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
    }
    .search-nav-wrap {
      flex: 1;
      max-width: 580px;
      position: relative;
    }
    .search-nav-wrap input {
      width: 100%;
      height: 44px;
      margin: 0;
      padding: 0 5.5rem 0 2.75rem;
      background: #F1F5F9;
      border: 1px solid transparent;
      border-radius: var(--radius-pill);
      font-size: 0.875rem;
      color: var(--text-main);
      transition: all 0.2s;
    }
    .search-nav-wrap input:focus {
      outline: none;
      background: #FFFFFF;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
    }
    .search-icon-pos {
      position: absolute;
      left: 1rem;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-light);
      pointer-events: none;
    }
    .search-btn-pos {
      position: absolute;
      right: 4px;
      top: 4px;
      height: 36px;
      padding: 0 1.1rem;
      background: var(--primary);
      color: #fff;
      font-size: 0.8rem;
      font-weight: 600;
      border: none;
      border-radius: var(--radius-pill);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: background 0.2s;
    }
    .search-btn-pos:hover { background: var(--primary-dark); }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 1.25rem;
      white-space: nowrap;
    }
    .nav-links a {
      font-size: 0.925rem;
      font-weight: 600;
      color: var(--text-muted);
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--primary);
    }
    .nav-sub-btn {
      padding: 0.45rem 1rem;
      font-size: 0.825rem;
      font-weight: 600;
      border-radius: var(--radius-pill);
      background: rgba(79, 70, 229, 0.08);
      color: var(--primary);
      border: 1px solid rgba(79, 70, 229, 0.2);
    }
    .nav-sub-btn:hover {
      background: var(--primary);
      color: #fff;
    }

    .cat-head-hero {
      background: #0B0F19;
      color: #FFFFFF;
      padding: 3.5rem 0 3rem;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .cat-head-overlay {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/9099cfc3a561b5a2.jpg');
      background-size: cover;
      background-position: center;
      opacity: 0.22;
      filter: blur(3px);
    }
    .cat-head-inner {
      position: relative;
      z-index: 2;
    }
    .breadcrumbs {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.85rem;
      color: #94A3B8;
      margin-bottom: 1.25rem;
    }
    .breadcrumbs a { color: #CBD5E1; }
    .breadcrumbs a:hover { color: #FFFFFF; }
    .cat-title-row {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 1rem;
      margin-bottom: 1rem;
    }
    .cat-h1 {
      font-size: 2.35rem;
      font-weight: 900;
      letter-spacing: -0.02em;
      margin: 0;
      color: #FFFFFF;
    }
    .cat-h1 span {
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .cat-badge-stat {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      padding: 0.35rem 0.85rem;
      border-radius: var(--radius-pill);
      background: rgba(6, 182, 212, 0.15);
      border: 1px solid rgba(6, 182, 212, 0.3);
      color: var(--secondary);
      font-size: 0.8rem;
      font-weight: 700;
    }
    .cat-lead {
      font-size: 1.05rem;
      color: #94A3B8;
      max-width: 820px;
      line-height: 1.65;
      margin: 0;
    }

    .cat-toolbar-section {
      background: #FFFFFF;
      border-bottom: 1px solid var(--border-color);
      padding: 1rem 0;
    }
    .toolbar-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 1rem;
    }
    .filter-group {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      flex-wrap: wrap;
    }
    .filter-label {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-light);
      margin-right: 0.25rem;
    }
    .filter-pill {
      font-size: 0.825rem;
      font-weight: 600;
      padding: 0.35rem 0.9rem;
      border-radius: var(--radius-pill);
      background: #F1F5F9;
      color: var(--text-muted);
      border: 1px solid transparent;
      transition: all 0.2s;
    }
    .filter-pill:hover, .filter-pill.active {
      background: var(--primary-light);
      color: var(--primary);
      border-color: rgba(79, 70, 229, 0.2);
    }
    .sort-indicator {
      font-size: 0.825rem;
      color: var(--text-light);
      display: flex;
      align-items: center;
      gap: 0.4rem;
    }

    .main-section {
      padding: 4.25rem 0;
    }
    .main-section.alt-bg {
      background-color: var(--bg-alt);
    }
    .section-header {
      margin-bottom: 2.5rem;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      padding: 0.3rem 0.85rem;
      font-size: 0.75rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      border-radius: var(--radius-badge);
      background: rgba(79, 70, 229, 0.08);
      color: var(--primary);
      border: 1px solid rgba(79, 70, 229, 0.15);
      margin-bottom: 0.85rem;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin: 0 0 0.6rem;
      letter-spacing: -0.02em;
    }
    .section-desc {
      font-size: 0.95rem;
      color: var(--text-light);
      margin: 0;
      max-width: 680px;
    }

    .video-grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .video-card {
      background: var(--bg-card);
      border-radius: var(--radius-card);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-base);
      display: flex;
      flex-direction: column;
      transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
    }
    .video-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(79, 70, 229, 0.3);
    }
    .video-thumb-box {
      position: relative;
      aspect-ratio: 16 / 9;
      background: #0F172A;
      overflow: hidden;
    }
    .video-thumb-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .video-card:hover .video-thumb-box img {
      transform: scale(1.05);
    }
    .quality-tag {
      position: absolute;
      top: 0.75rem;
      left: 0.75rem;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(4px);
      color: #38BDF8;
      border: 1px solid rgba(56, 189, 248, 0.4);
      font-size: 0.7rem;
      font-weight: 800;
      padding: 0.2rem 0.55rem;
      border-radius: 4px;
    }
    .duration-tag {
      position: absolute;
      bottom: 0.75rem;
      right: 0.75rem;
      background: rgba(0, 0, 0, 0.75);
      color: #FFFFFF;
      font-size: 0.7rem;
      font-weight: 600;
      padding: 0.15rem 0.5rem;
      border-radius: 4px;
    }
    .play-overlay-icon {
      position: absolute;
      inset: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      opacity: 0;
      background: rgba(15, 23, 42, 0.35);
      transition: opacity 0.2s;
    }
    .play-circle {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--accent-gradient);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    }
    .video-card:hover .play-overlay-icon {
      opacity: 1;
    }
    .video-info {
      padding: 1.25rem;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .video-meta-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.75rem;
      color: var(--text-light);
      margin-bottom: 0.5rem;
    }
    .video-title {
      font-size: 1rem;
      font-weight: 700;
      line-height: 1.4;
      color: var(--text-main);
      margin: 0 0 0.5rem;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .video-card:hover .video-title {
      color: var(--primary);
    }
    .video-desc {
      font-size: 0.825rem;
      color: var(--text-muted);
      line-height: 1.5;
      margin: 0 0 1rem;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      flex: 1;
    }
    .video-card-foot {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid #F1F5F9;
      padding-top: 0.75rem;
      font-size: 0.75rem;
      color: var(--text-light);
    }

    .tech-guide-box {
      background: var(--bg-card);
      border-radius: var(--radius-card);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-base);
      overflow: hidden;
    }
    .guide-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
    }
    .guide-content-side {
      padding: 3rem;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .guide-img-side {
      position: relative;
      min-height: 380px;
    }
    .guide-img-side img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .guide-feature-list {
      list-style: none;
      padding: 0;
      margin: 1.5rem 0 0;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    .guide-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 0.75rem;
    }
    .guide-item-dot {
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      margin-top: 2px;
      font-size: 0.75rem;
      font-weight: 800;
    }
    .guide-item-text h4 {
      font-size: 0.95rem;
      font-weight: 700;
      margin: 0 0 0.2rem;
      color: var(--text-main);
    }
    .guide-item-text p {
      font-size: 0.85rem;
      color: var(--text-light);
      margin: 0;
      line-height: 1.5;
    }

    .top-rank-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.5rem;
    }
    .rank-card {
      background: var(--bg-card);
      border-radius: var(--radius-card);
      border: 1px solid var(--border-color);
      padding: 2rem;
      box-shadow: var(--shadow-base);
    }
    .rank-card-title {
      font-size: 1.15rem;
      font-weight: 800;
      margin-bottom: 1.25rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 0.75rem;
    }
    .rank-list {
      display: flex;
      flex-direction: column;
      gap: 0.9rem;
    }
    .rank-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      padding: 0.5rem 0.6rem;
      border-radius: 8px;
      transition: background 0.2s;
    }
    .rank-row:hover {
      background: #F8FAFC;
    }
    .rank-left {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      min-width: 0;
    }
    .rank-num {
      width: 24px;
      height: 24px;
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
      font-weight: 800;
      flex-shrink: 0;
      background: #E2E8F0;
      color: var(--text-light);
    }
    .rank-num.top1 { background: #EF4444; color: #fff; }
    .rank-num.top2 { background: #F97316; color: #fff; }
    .rank-num.top3 { background: #F59E0B; color: #fff; }
    .rank-name {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .rank-heat {
      font-size: 0.75rem;
      color: var(--text-light);
      display: flex;
      align-items: center;
      gap: 0.3rem;
      flex-shrink: 0;
    }

    .cat-subscribe-card {
      background: linear-gradient(135deg, #1E1B4B 0%, #0F172A 100%);
      border-radius: var(--radius-card);
      padding: 3.5rem 2rem;
      text-align: center;
      color: #FFFFFF;
      position: relative;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: var(--shadow-hover);
    }
    .cat-sub-title {
      font-size: 2rem;
      font-weight: 800;
      margin-bottom: 0.75rem;
      color: #FFFFFF;
    }
    .cat-sub-desc {
      font-size: 1rem;
      color: #94A3B8;
      max-width: 620px;
      margin: 0 auto 2rem;
      line-height: 1.6;
    }
    .cat-sub-form {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.75rem;
      max-width: 520px;
      margin: 0 auto;
      flex-wrap: wrap;
    }
    .cat-sub-form input {
      flex: 1;
      min-width: 260px;
      height: 48px;
      border-radius: var(--radius-pill);
      border: 1px solid rgba(255, 255, 255, 0.2);
      background: rgba(255, 255, 255, 0.08);
      padding: 0 1.25rem;
      color: #FFFFFF;
      font-size: 0.9rem;
      margin: 0;
    }
    .cat-sub-form input:focus {
      outline: none;
      background: rgba(255, 255, 255, 0.15);
      border-color: var(--primary);
    }
    .cat-sub-form button {
      height: 48px;
      padding: 0 1.75rem;
      border-radius: var(--radius-pill);
      background: var(--accent-gradient);
      color: #FFFFFF;
      font-weight: 700;
      border: none;
      cursor: pointer;
      font-size: 0.9rem;
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .cat-sub-form button:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(236, 72, 153, 0.35);
    }

    .site-footer {
      background: #0B0F19;
      color: #94A3B8;
      padding: 4.5rem 0 2rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-top-card {
      background: #111827;
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-card);
      padding: 2.5rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 2rem;
      margin-bottom: 3.5rem;
      flex-wrap: wrap;
    }
    .footer-top-text h3 {
      font-size: 1.35rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 0.4rem;
    }
    .footer-top-text p {
      font-size: 0.9rem;
      color: #94A3B8;
      margin: 0;
    }
    .final-form-box {
      display: flex;
      gap: 0.5rem;
    }
    .final-form-box input {
      height: 44px;
      border-radius: var(--radius-pill);
      padding: 0 1.25rem;
      color: #fff;
      font-size: 0.85rem;
      border: 1px solid #374151;
      width: 100%;
      margin: 0;
    }
    .final-form-box button {
      height: 44px;
      padding: 0 1.25rem;
      border-radius: var(--radius-pill);
      background: var(--primary);
      color: #fff;
      font-size: 0.85rem;
      font-weight: 600;
      border: none;
      cursor: pointer;
      white-space: nowrap;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 2.5rem;
      margin-bottom: 3.5rem;
    }
    .footer-col h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 1.25rem;
      letter-spacing: -0.01em;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 0.65rem;
    }
    .footer-links a {
      font-size: 0.85rem;
      color: #9CA3AF;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-bottom-bar {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 1.75rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8rem;
      color: #64748B;
      flex-wrap: wrap;
      gap: 1rem;
    }

    @media (max-width: 1024px) {
      .video-grid-4 { grid-template-columns: repeat(2, 1fr); }
      .guide-grid { grid-template-columns: 1fr; }
      .guide-img-side { min-height: 260px; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
    }
    @media (max-width: 768px) {
      .search-nav-wrap { order: 3; max-width: 100%; width: 100%; margin-top: 0.5rem; }
      .nav-flex { flex-wrap: wrap; }
      .video-grid-4 { grid-template-columns: 1fr; }
      .top-rank-grid { grid-template-columns: 1fr; }
      .cat-h1 { font-size: 1.85rem; }
      .guide-content-side { padding: 1.75rem; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-top-card { padding: 1.5rem; }
    }

/* roulang page: article */
:root {
      --primary: #4F46E5;
      --primary-dark: #3730A3;
      --primary-light: #EEF2FF;
      --secondary: #06B6D4;
      --accent: #EC4899;
      --accent-gradient: linear-gradient(135deg, #4F46E5 0%, #7C3AED 50%, #EC4899 100%);
      --bg-main: #F8FAFC;
      --bg-card: #FFFFFF;
      --bg-alt: #EEF2F6;
      --text-main: #0F172A;
      --text-muted: #334155;
      --text-light: #64748B;
      --border-color: #E2E8F0;
      --radius-card: 20px;
      --radius-pill: 9999px;
      --radius-badge: 8px;
      --shadow-base: 0 10px 25px -5px rgba(15, 23, 42, 0.05), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
      --shadow-hover: 0 20px 30px -10px rgba(79, 70, 229, 0.15);
    }
    body {
      margin: 0;
      padding: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
    img { max-width: 100%; height: auto; display: block; }
    .site-container { max-width: 1240px; margin: 0 auto; padding: 0 1.25rem; }
    
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-color);
      padding: 0.75rem 0;
    }
    .nav-flex {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1.5rem;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      font-size: 1.35rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--text-main);
      white-space: nowrap;
    }
    .brand-logo-icon {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: var(--accent-gradient);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
    }
    .search-nav-wrap {
      flex: 1;
      max-width: 580px;
      position: relative;
    }
    .search-nav-wrap input {
      width: 100%;
      height: 44px;
      margin: 0;
      padding: 0 5.5rem 0 2.75rem;
      background: #F1F5F9;
      border: 1px solid transparent;
      border-radius: var(--radius-pill);
      font-size: 0.875rem;
      color: var(--text-main);
      transition: all 0.2s;
    }
    .search-nav-wrap input:focus {
      outline: none;
      background: #FFFFFF;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
    }
    .search-icon-pos {
      position: absolute;
      left: 1rem;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-light);
      pointer-events: none;
    }
    .search-btn-pos {
      position: absolute;
      right: 4px;
      top: 4px;
      height: 36px;
      padding: 0 1.1rem;
      background: var(--primary);
      color: #fff;
      font-size: 0.8rem;
      font-weight: 600;
      border: none;
      border-radius: var(--radius-pill);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: background 0.2s;
    }
    .search-btn-pos:hover { background: var(--primary-dark); }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 1.25rem;
      white-space: nowrap;
    }
    .nav-links a {
      font-size: 0.925rem;
      font-weight: 600;
      color: var(--text-muted);
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--primary);
    }
    .nav-sub-btn {
      padding: 0.45rem 1rem;
      font-size: 0.825rem;
      font-weight: 600;
      border-radius: var(--radius-pill);
      background: rgba(79, 70, 229, 0.08);
      color: var(--primary);
      border: 1px solid rgba(79, 70, 229, 0.2);
    }
    .nav-sub-btn:hover {
      background: var(--primary);
      color: #fff;
    }

    .article-wrap {
      max-width: 860px;
      margin: 0 auto;
      padding: 3rem 1.25rem 5rem;
    }

    /* Section 1: Header Meta */
    .article-header {
      margin-bottom: 2rem;
      text-align: left;
    }
    .breadcrumb-nav {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.875rem;
      color: var(--text-light);
      margin-bottom: 1.25rem;
    }
    .breadcrumb-nav a:hover {
      color: var(--primary);
    }
    .article-h1 {
      font-size: 2.35rem;
      font-weight: 800;
      line-height: 1.3;
      color: var(--text-main);
      margin-bottom: 1.25rem;
      letter-spacing: -0.02em;
    }
    .article-meta-bar {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 1rem;
      padding-bottom: 1.25rem;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.875rem;
      color: var(--text-light);
    }
    .meta-tag-badge {
      display: inline-flex;
      align-items: center;
      padding: 0.2rem 0.65rem;
      font-size: 0.75rem;
      font-weight: 700;
      border-radius: var(--radius-badge);
      background: rgba(79, 70, 229, 0.08);
      color: var(--primary);
      border: 1px solid rgba(79, 70, 229, 0.15);
    }
    .meta-badge-stream {
      display: inline-flex;
      align-items: center;
      padding: 0.2rem 0.65rem;
      font-size: 0.75rem;
      font-weight: 700;
      border-radius: var(--radius-badge);
      background: rgba(6, 182, 212, 0.1);
      color: #0891B2;
      border: 1px solid rgba(6, 182, 212, 0.2);
    }

    /* Section 2: Newsletter Summary */
    .newsletter-summary-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-left: 4px solid var(--primary);
      border-radius: 12px;
      padding: 1.5rem 1.75rem;
      margin-bottom: 2.5rem;
      box-shadow: 0 4px 15px -3px rgba(15, 23, 42, 0.04);
    }
    .summary-title {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
    }
    .summary-list {
      margin: 0;
      padding-left: 1.2rem;
      color: var(--text-muted);
      font-size: 0.925rem;
      line-height: 1.7;
    }

    /* Section 3: Article Body */
    .article-body-container {
      background: #FFFFFF;
      border-radius: var(--radius-card);
      padding: 2.5rem;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-base);
      margin-bottom: 3rem;
    }
    .article-rich-content {
      font-size: 1.05rem;
      line-height: 1.85;
      color: var(--text-muted);
      word-wrap: break-word;
    }
    .article-rich-content h2 {
      font-size: 1.6rem;
      font-weight: 700;
      color: var(--text-main);
      margin-top: 2.2rem;
      margin-bottom: 1rem;
      padding-bottom: 0.5rem;
      border-bottom: 1px solid #F1F5F9;
    }
    .article-rich-content h3 {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--text-main);
      margin-top: 1.8rem;
      margin-bottom: 0.8rem;
    }
    .article-rich-content p {
      margin-bottom: 1.35rem;
    }
    .article-rich-content blockquote {
      border-left: 4px solid var(--primary);
      padding: 0.75rem 1.25rem;
      margin: 1.5rem 0;
      background: var(--bg-main);
      color: var(--text-muted);
      border-radius: 0 8px 8px 0;
      font-style: italic;
    }
    .article-rich-content img {
      border-radius: 12px;
      margin: 1.5rem auto;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    }
    .article-not-found {
      text-align: center;
      padding: 4rem 1rem;
    }
    .article-not-found p {
      font-size: 1.25rem;
      color: var(--text-light);
      margin-bottom: 1.5rem;
    }
    .btn-return-home {
      display: inline-flex;
      align-items: center;
      padding: 0.65rem 1.5rem;
      border-radius: var(--radius-pill);
      background: var(--primary);
      color: #fff;
      font-weight: 600;
      font-size: 0.9rem;
    }
    .btn-return-home:hover {
      background: var(--primary-dark);
      color: #fff;
    }

    /* Section 4: Watch Action Area */
    .watch-action-box {
      background: linear-gradient(135deg, #0F172A 0%, #1E1B4B 100%);
      border-radius: var(--radius-card);
      padding: 2.25rem;
      color: #FFFFFF;
      margin-bottom: 3.5rem;
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.2);
    }
    .watch-action-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      margin-bottom: 1.5rem;
      padding-bottom: 1.25rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    }
    .watch-title {
      font-size: 1.35rem;
      font-weight: 800;
      display: flex;
      align-items: center;
      gap: 0.6rem;
    }
    .watch-node-list {
      display: flex;
      flex-wrap: wrap;
      gap: 0.75rem;
      margin-bottom: 1.5rem;
    }
    .node-item {
      padding: 0.5rem 1rem;
      border-radius: var(--radius-pill);
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      font-size: 0.85rem;
      color: #E2E8F0;
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      cursor: pointer;
      transition: all 0.2s;
    }
    .node-item.active, .node-item:hover {
      background: var(--primary);
      border-color: var(--primary);
      color: #FFFFFF;
    }
    .node-dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: #10B981;
    }
    .watch-trigger-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 1.25rem;
    }
    .watch-tip-text {
      font-size: 0.85rem;
      color: #94A3B8;
      max-width: 480px;
      line-height: 1.5;
    }
    .btn-play-trigger {
      display: inline-flex;
      align-items: center;
      gap: 0.6rem;
      padding: 0.75rem 1.85rem;
      border-radius: var(--radius-pill);
      background: var(--accent-gradient);
      color: #FFFFFF;
      font-weight: 700;
      font-size: 0.95rem;
      box-shadow: 0 10px 20px rgba(236, 72, 153, 0.3);
      cursor: pointer;
      border: none;
    }
    .btn-play-trigger:hover {
      transform: translateY(-2px);
      box-shadow: 0 15px 25px rgba(236, 72, 153, 0.4);
      color: #FFFFFF;
    }

    /* Section 5: Related Media Cards */
    .related-stream-section {
      margin-bottom: 3.5rem;
    }
    .related-heading {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 1.25rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .related-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.25rem;
    }
    .related-card {
      background: #FFFFFF;
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: 0 4px 15px -2px rgba(15, 23, 42, 0.05);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
    }
    .related-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(79, 70, 229, 0.3);
    }
    .related-thumb {
      height: 140px;
      position: relative;
      overflow: hidden;
      background: #1E293B;
    }
    .related-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.35s ease;
    }
    .related-card:hover .related-thumb img {
      transform: scale(1.05);
    }
    .related-tag-pos {
      position: absolute;
      top: 8px;
      left: 8px;
      padding: 0.15rem 0.5rem;
      font-size: 0.7rem;
      font-weight: 700;
      border-radius: 4px;
      background: rgba(15, 23, 42, 0.75);
      color: #fff;
      backdrop-filter: blur(4px);
    }
    .related-content {
      padding: 1rem;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .related-title {
      font-size: 0.95rem;
      font-weight: 700;
      line-height: 1.4;
      color: var(--text-main);
      margin-bottom: 0.5rem;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .related-meta {
      margin-top: auto;
      font-size: 0.8rem;
      color: var(--text-light);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    /* Section 6: Copyright & Reader Actions */
    .article-footer-card {
      background: var(--bg-alt);
      border-radius: 16px;
      padding: 1.5rem 1.75rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 1.25rem;
      border: 1px solid var(--border-color);
      margin-bottom: 2rem;
    }
    .footer-copyright-note {
      font-size: 0.85rem;
      color: var(--text-light);
      line-height: 1.6;
    }
    .action-btn-group {
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }
    .btn-action-light {
      padding: 0.45rem 1.1rem;
      border-radius: var(--radius-pill);
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      font-size: 0.825rem;
      font-weight: 600;
      color: var(--text-muted);
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
    }
    .btn-action-light:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    /* Footer Styles */
    .site-footer {
      background: #111827;
      color: #9CA3AF;
      padding: 4.5rem 0 2rem;
      border-top: 1px solid #1F2937;
    }
    .footer-top-card {
      background: #1F2937;
      border-radius: var(--radius-card);
      padding: 2.25rem 2.5rem;
      margin-bottom: 3.5rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 1.5rem;
      border: 1px solid #374151;
    }
    .footer-top-text h3 {
      font-size: 1.35rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 0.4rem;
    }
    .footer-top-text p {
      margin: 0;
      font-size: 0.9rem;
      color: #9CA3AF;
    }
    .final-form-box {
      display:flex;
      gap: 0.6rem;
    }
    .final-form-box input {
      flex: 1;
      height: 44px;
      margin: 0;
      padding: 0 1rem;
      border-radius: var(--radius-pill);
      color: #FFFFFF;
      font-size: 0.875rem;
    }
    .final-form-box input:focus {
      outline: none;
      border-color: var(--primary);
    }
    .final-form-box button {
      height: 44px;
      padding: 0 1.5rem;
      background: var(--accent-gradient);
      color: #FFFFFF;
      font-weight: 700;
      font-size: 0.875rem;
      border: none;
      border-radius: var(--radius-pill);
      cursor: pointer;
      white-space: nowrap;
      transition: opacity 0.2s;
    }
    .final-form-box button:hover {
      opacity: 0.9;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 2.5rem;
      margin-bottom: 3.5rem;
    }
    .footer-col h4 {
      font-size: 1rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 1.25rem;
    }
    .footer-links {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links li {
      margin-bottom: 0.75rem;
    }
    .footer-links a {
      font-size: 0.875rem;
      color: #9CA3AF;
    }
    .footer-links a:hover {
      color: #FFFFFF;
      padding-left: 4px;
    }
    .footer-bottom-bar {
      padding-top: 2rem;
      border-top: 1px solid #1F2937;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.8rem;
      color: #64748B;
    }

    @media (max-width: 1024px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .nav-flex {
        flex-wrap: wrap;
      }
      .search-nav-wrap {
        order: 3;
        max-width: 100%;
        width: 100%;
      }
      .article-h1 {
        font-size: 1.75rem;
      }
      .article-body-container {
        padding: 1.5rem 1rem;
      }
      .related-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .watch-trigger-row {
        flex-direction: column;
        align-items: flex-start;
      }
      .btn-play-trigger {
        width: 100%;
        justify-content: center;
      }
    }