/* roulang page: index */
:root {
      --bg-dark: #0a0c14;
      --bg-surface: #101424;
      --bg-card: #151b30;
      --bg-card-alt: #1c2440;
      --neon-cyan: #00f2fe;
      --neon-magenta: #ff007f;
      --neon-purple: #7928ca;
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
      --text-sub: #64748b;
      --border-glow: rgba(0, 242, 254, 0.25);
      --border-glass: rgba(255, 255, 255, 0.08);
      --glow-cyan: 0 0 25px rgba(0, 242, 254, 0.45);
      --glow-magenta: 0 0 25px rgba(255, 0, 127, 0.4);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 22px;
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: 'Noto Sans SC', sans-serif;
      line-height: 1.65;
      overflow-x: hidden;
      background-image: radial-gradient(circle at 15% 15%, rgba(121, 40, 202, 0.15), transparent 45%),
                        radial-gradient(circle at 85% 65%, rgba(0, 242, 254, 0.12), transparent 50%),
                        radial-gradient(circle at 50% 90%, rgba(255, 0, 127, 0.08), transparent 40%);
      background-attachment: fixed;
    }

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

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

    .container {
      width: 100%;
      max-width: 1260px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 12, 20, 0.85);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-glass);
      transition: var(--transition);
    }

    .nav-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.25rem;
      font-weight: 800;
      color: #fff;
      letter-spacing: -0.5px;
    }

    .brand-logo i {
      font-size: 1.5rem;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
    }

    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
      padding: 6px 0;
    }

    .nav-link:hover, .nav-link.active {
      color: #fff;
    }

    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 100%;
      height: 2px;
      background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta));
      border-radius: 2px;
    }

    .nav-action {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .badge-live {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(0, 242, 254, 0.1);
      border: 1px solid rgba(0, 242, 254, 0.3);
      padding: 5px 12px;
      border-radius: 20px;
      font-size: 0.78rem;
      color: var(--neon-cyan);
    }

    .badge-dot {
      width: 6px;
      height: 6px;
      background-color: var(--neon-cyan);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--neon-cyan);
      animation: pulse 1.8s infinite;
    }

    @keyframes pulse {
      0% { opacity: 0.4; transform: scale(0.9); }
      50% { opacity: 1; transform: scale(1.2); }
      100% { opacity: 0.4; transform: scale(0.9); }
    }

    .btn-gradient {
      background: linear-gradient(135deg, var(--neon-cyan), #0070f3);
      color: #030a1c;
      font-weight: 700;
      font-size: 0.92rem;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border: none;
      cursor: pointer;
      box-shadow: var(--glow-cyan);
      transition: var(--transition);
    }

    .btn-gradient:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 35px rgba(0, 242, 254, 0.7);
      color: #000;
    }

    .btn-outline {
      background: transparent;
      border: 1px solid var(--border-glow);
      color: #fff;
      font-weight: 600;
      font-size: 0.92rem;
      padding: 10px 20px;
      border-radius: var(--radius-sm);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      cursor: pointer;
      transition: var(--transition);
    }

    .btn-outline:hover {
      background: rgba(0, 242, 254, 0.1);
      border-color: var(--neon-cyan);
      transform: translateY(-2px);
    }

    /* 板块通用布局 */
    .section-pad {
      padding: 90px 0;
      position: relative;
    }

    .section-alt {
      background: rgba(16, 20, 36, 0.6);
      border-top: 1px solid var(--border-glass);
      border-bottom: 1px solid var(--border-glass);
    }

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

    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 2px;
      color: var(--neon-cyan);
      margin-bottom: 12px;
      padding: 4px 14px;
      background: rgba(0, 242, 254, 0.08);
      border-radius: 4px;
      border-left: 3px solid var(--neon-cyan);
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
      background: linear-gradient(180deg, #ffffff 40%, #94a3b8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 780px;
      margin: 0 auto;
      line-height: 1.7;
    }

    /* 1. Hero 前后对比首屏 (随机蓝图执行) */
    .hero-compare {
      padding: 80px 0 100px;
      position: relative;
      background-image: linear-gradient(to bottom, rgba(10, 12, 20, 0.7), var(--bg-dark)), url('/assets/images/b842b76a6cb5300a.webp');
      background-size: cover;
      background-position: center;
    }

    .hero-content {
      text-align: center;
      max-width: 960px;
      margin: 0 auto 56px;
    }

    .hero-h1 {
      font-size: 2.85rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 24px;
      letter-spacing: -1px;
    }

    .hero-h1 span {
      background: linear-gradient(135deg, var(--neon-cyan) 20%, var(--neon-magenta) 80%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-lead {
      font-size: 1.15rem;
      color: #cbd5e1;
      line-height: 1.8;
      margin-bottom: 36px;
      padding: 0 20px;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 20px;
      margin-bottom: 30px;
    }

    .compare-stage {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      background: rgba(16, 20, 36, 0.7);
      backdrop-filter: blur(12px);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
    }

    .compare-box {
      border-radius: var(--radius-md);
      padding: 28px;
      position: relative;
      transition: var(--transition);
    }

    .compare-box.before-box {
      background: rgba(21, 27, 48, 0.4);
      border: 1px dashed rgba(255, 255, 255, 0.15);
    }

    .compare-box.after-box {
      background: linear-gradient(180deg, rgba(28, 36, 64, 0.8) 0%, rgba(16, 20, 36, 0.9) 100%);
      border: 1px solid var(--neon-cyan);
      box-shadow: inset 0 0 30px rgba(0, 242, 254, 0.15), var(--glow-cyan);
    }

    .compare-tag {
      font-size: 0.85rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 16px;
    }

    .before-box .compare-tag {
      background: rgba(100, 116, 139, 0.2);
      color: #94a3b8;
    }

    .after-box .compare-tag {
      background: var(--neon-cyan);
      color: #030a1c;
    }

    .compare-list {
      list-style: none;
      margin-top: 16px;
    }

    .compare-list li {
      font-size: 0.95rem;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .before-box li {
      color: #64748b;
    }

    .before-box li i {
      color: #ef4444;
    }

    .after-box li {
      color: #e2e8f0;
    }

    .after-box li i {
      color: var(--neon-cyan);
    }

    /* 2. KPI 看板 */
    .kpi-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .kpi-card {
      background: var(--bg-card);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      text-align: center;
      transition: var(--transition);
    }

    .kpi-card:hover {
      border-color: var(--neon-cyan);
      transform: translateY(-5px);
    }

    .kpi-val {
      font-family: 'Outfit', sans-serif;
      font-size: 2.8rem;
      font-weight: 800;
      background: linear-gradient(135deg, #fff, var(--neon-cyan));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 8px;
    }

    .kpi-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 6px;
    }

    .kpi-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 3. 卖点三连 */
    .triad-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .triad-card {
      background: var(--bg-card);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      padding: 36px 28px;
      position: relative;
      overflow: hidden;
      transition: var(--transition);
    }

    .triad-card:hover {
      border-color: var(--neon-cyan);
      box-shadow: 0 10px 30px rgba(0, 242, 254, 0.15);
      transform: translateY(-4px);
    }

    .triad-icon {
      width: 56px;
      height: 56px;
      border-radius: 12px;
      background: rgba(0, 242, 254, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      color: var(--neon-cyan);
      margin-bottom: 22px;
    }

    .triad-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: #fff;
    }

    .triad-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 4. 服务矩阵 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .matrix-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }

    .matrix-item:hover {
      border-color: var(--neon-purple);
      transform: translateY(-4px);
    }

    .matrix-thumb {
      height: 180px;
      position: relative;
      overflow: hidden;
    }

    .matrix-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.6s ease;
    }

    .matrix-item:hover .matrix-thumb img {
      transform: scale(1.08);
    }

    .matrix-info {
      padding: 22px;
    }

    .matrix-head {
      font-size: 1.15rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 8px;
    }

    .matrix-p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 5. 场景演示 (左右交错) */
    .scenario-row {
      display: flex;
      align-items: center;
      gap: 50px;
      margin-bottom: 50px;
    }

    .scenario-row:nth-child(even) {
      flex-direction: row-reverse;
    }

    .scenario-row:last-child {
      margin-bottom: 0;
    }

    .scenario-media {
      flex: 1;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-glass);
      box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
    }

    .scenario-media img {
      width: 100%;
      height: 320px;
      object-fit: cover;
    }

    .scenario-text {
      flex: 1;
    }

    .scenario-step {
      font-size: 0.85rem;
      font-weight: 800;
      color: var(--neon-magenta);
      margin-bottom: 10px;
      letter-spacing: 1px;
    }

    .scenario-title {
      font-size: 1.55rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 14px;
    }

    .scenario-desc {
      font-size: 0.98rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 18px;
    }

    /* 6. 结果对比 */
    .res-compare-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      background: var(--bg-card);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-glass);
      overflow: hidden;
    }

    .res-compare-table th, .res-compare-table td {
      padding: 18px 24px;
      text-align: left;
      font-size: 0.95rem;
      border-bottom: 1px solid var(--border-glass);
    }

    .res-compare-table th {
      background: rgba(28, 36, 64, 0.7);
      color: #fff;
      font-weight: 700;
    }

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

    .res-compare-table td.brand-col {
      color: var(--neon-cyan);
      font-weight: 600;
      background: rgba(0, 242, 254, 0.04);
    }

    /* 7. 节日战役区 */
    .campaign-banner {
      background: linear-gradient(135deg, #2b0b45 0%, #0d122b 60%, #00223a 100%);
      border: 1px solid rgba(255, 0, 127, 0.3);
      border-radius: var(--radius-lg);
      padding: 48px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      position: relative;
      overflow: hidden;
      box-shadow: var(--glow-magenta);
    }

    .campaign-content {
      max-width: 650px;
    }

    .campaign-badge {
      background: var(--neon-magenta);
      color: #fff;
      font-size: 0.8rem;
      font-weight: 800;
      padding: 5px 14px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 16px;
    }

    .campaign-title {
      font-size: 2rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: #fff;
    }

    .campaign-desc {
      font-size: 1rem;
      color: #e2e8f0;
      line-height: 1.7;
      margin-bottom: 24px;
    }

    /* 8. 社会认同 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }

    .testi-card {
      background: var(--bg-card);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      padding: 28px;
      position: relative;
    }

    .testi-stars {
      color: #f59e0b;
      font-size: 0.9rem;
      margin-bottom: 14px;
    }

    .testi-text {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }

    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .testi-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #fff;
    }

    .testi-meta h4 {
      font-size: 0.95rem;
      color: #fff;
    }

    .testi-meta p {
      font-size: 0.82rem;
      color: var(--text-sub);
    }

    /* 9. 里程碑 / 发展路径 */
    .milestone-timeline {
      position: relative;
      max-width: 860px;
      margin: 0 auto;
      padding-left: 30px;
      border-left: 2px solid rgba(0, 242, 254, 0.3);
    }

    .milestone-node {
      position: relative;
      margin-bottom: 40px;
    }

    .milestone-node:last-child {
      margin-bottom: 0;
    }

    .milestone-node::before {
      content: '';
      position: absolute;
      left: -37px;
      top: 4px;
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: var(--neon-cyan);
      box-shadow: 0 0 10px var(--neon-cyan);
    }

    .milestone-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 6px;
    }

    .milestone-text {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 10. 资讯证据 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .news-card {
      background: var(--bg-card);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    .news-card-thumb {
      height: 180px;
    }

    .news-card-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .news-card-body {
      padding: 22px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .news-date {
      font-size: 0.8rem;
      color: var(--neon-cyan);
      margin-bottom: 8px;
    }

    .news-head {
      font-size: 1.1rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 10px;
      line-height: 1.45;
    }

    .news-p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex: 1;
    }

    /* 11. 异议拆解 (常见疑虑) */
    .objection-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }

    .obj-card {
      background: var(--bg-surface);
      border-left: 3px solid var(--neon-magenta);
      padding: 24px;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      border-top: 1px solid var(--border-glass);
      border-right: 1px solid var(--border-glass);
      border-bottom: 1px solid var(--border-glass);
    }

    .obj-q {
      font-size: 1.05rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .obj-q i {
      color: var(--neon-magenta);
    }

    .obj-a {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.68;
    }

    /* 12. 平台保障 */
    .guarantee-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      background: var(--bg-card);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      padding: 32px;
    }

    .guarantee-item {
      display: flex;
      align-items: flex-start;
      gap: 16px;
    }

    .guarantee-icon {
      font-size: 1.8rem;
      color: var(--neon-cyan);
      flex-shrink: 0;
    }

    .guarantee-item h4 {
      font-size: 1.05rem;
      color: #fff;
      margin-bottom: 4px;
    }

    .guarantee-item p {
      font-size: 0.85rem;
      color: var(--text-sub);
      line-height: 1.5;
    }

    /* 13. 快速解答 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-sm);
      padding: 24px 28px;
    }

    .faq-item h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .faq-item h4 i {
      color: var(--neon-cyan);
      font-size: 0.95rem;
    }

    .faq-item p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 14. 底部固定转化条 */
    .sticky-bottom-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(10, 12, 20, 0.95);
      border-top: 1px solid var(--border-glow);
      backdrop-filter: blur(16px);
      padding: 14px 0;
      z-index: 999;
      box-shadow: 0 -10px 25px rgba(0, 0, 0, 0.5);
    }

    .sticky-flex {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .sticky-meta h3 {
      font-size: 1.05rem;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .sticky-meta p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .sticky-btns {
      display: flex;
      gap: 12px;
    }

    /* 页脚 */
    .site-footer {
      background: #06080d;
      border-top: 1px solid var(--border-glass);
      padding: 70px 0 100px;
      color: var(--text-sub);
    }

    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }

    .footer-brand h3 {
      font-size: 1.3rem;
      color: #fff;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .footer-brand p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
      max-width: 380px;
    }

    .footer-col h4 {
      font-size: 1rem;
      color: #fff;
      margin-bottom: 18px;
    }

    .footer-col ul {
      list-style: none;
    }

    .footer-col li {
      margin-bottom: 10px;
      font-size: 0.9rem;
    }

    .footer-col a:hover {
      color: var(--neon-cyan);
    }

    .footer-bottom {
      border-top: 1px solid var(--border-glass);
      padding-top: 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
    }

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .compare-stage {
        grid-template-columns: 1fr;
      }
      .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .triad-grid {
        grid-template-columns: 1fr;
      }
      .matrix-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .guarantee-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-menu {
        display: none;
      }
      .hero-h1 {
        font-size: 2.1rem;
      }
      .section-title {
        font-size: 1.75rem;
      }
      .scenario-row {
        flex-direction: column !important;
      }
      .testimonial-grid, .news-grid, .objection-grid {
        grid-template-columns: 1fr;
      }
      .guarantee-bar {
        grid-template-columns: 1fr;
      }
      .sticky-meta {
        display: none;
      }
      .sticky-flex {
        justify-content: center;
        width: 100%;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }

/* roulang page: category2 */
:root {
        --bg-dark: #0a0c14;
        --bg-surface: #101424;
        --bg-card: #151b30;
        --bg-card-alt: #1c2440;
        --neon-cyan: #00f2fe;
        --neon-magenta: #ff007f;
        --neon-purple: #7928ca;
        --text-main: #f8fafc;
        --text-muted: #94a3b8;
        --text-sub: #64748b;
        --border-glow: rgba(0, 242, 254, 0.25);
        --border-glass: rgba(255, 255, 255, 0.08);
        --glow-cyan: 0 0 25px rgba(0, 242, 254, 0.45);
        --glow-magenta: 0 0 25px rgba(255, 0, 127, 0.4);
        --radius-sm: 8px;
        --radius-md: 14px;
        --radius-lg: 22px;
        --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    * {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    body {
        background-color: var(--bg-dark);
        color: var(--text-main);
        font-family: 'Noto Sans SC', sans-serif;
        line-height: 1.65;
        overflow-x: hidden;
        background-image: radial-gradient(circle at 15% 15%, rgba(121, 40, 202, 0.15), transparent 45%),
                          radial-gradient(circle at 85% 65%, rgba(0, 242, 254, 0.12), transparent 50%),
                          radial-gradient(circle at 50% 90%, rgba(255, 0, 127, 0.08), transparent 40%);
        background-attachment: fixed;
    }
    a {
        color: inherit;
        text-decoration: none;
        transition: var(--transition);
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    .container {
        width: 100%;
        max-width: 1260px;
        margin: 0 auto;
        padding: 0 24px;
    }
    /* 顶部导航 */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: rgba(10, 12, 20, 0.85);
        backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--border-glass);
        transition: var(--transition);
    }
    .nav-bar {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 74px;
    }
    .brand-logo {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 1.25rem;
        font-weight: 800;
        color: #fff;
        letter-spacing: -0.5px;
    }
    .brand-logo i {
        font-size: 1.5rem;
        background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }
    .nav-menu {
        display: flex;
        align-items: center;
        gap: 32px;
        list-style: none;
    }
    .nav-link {
        font-size: 0.95rem;
        font-weight: 500;
        color: var(--text-muted);
        position: relative;
        padding: 6px 0;
    }
    .nav-link:hover, .nav-link.active {
        color: #fff;
    }
    .nav-link.active::after {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 0;
        width: 100%;
        height: 2px;
        background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta));
        border-radius: 2px;
    }
    .nav-action {
        display: flex;
        align-items: center;
        gap: 16px;
    }
    .badge-live {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: rgba(0, 242, 254, 0.1);
        border: 1px solid rgba(0, 242, 254, 0.3);
        padding: 5px 12px;
        border-radius: 20px;
        font-size: 0.78rem;
        color: var(--neon-cyan);
    }
    .badge-dot {
        width: 6px;
        height: 6px;
        background-color: var(--neon-cyan);
        border-radius: 50%;
        box-shadow: 0 0 8px var(--neon-cyan);
        animation: pulse 1.8s infinite;
    }
    @keyframes pulse {
        0%, 100% { opacity: 1; transform: scale(1); }
        50% { opacity: 0.4; transform: scale(1.2); }
    }
    .btn-gradient {
        background: linear-gradient(135deg, var(--neon-cyan), #0070f3);
        color: #030a1c;
        font-weight: 700;
        font-size: 0.92rem;
        padding: 10px 22px;
        border-radius: var(--radius-sm);
        display: inline-flex;
        align-items: center;
        gap: 8px;
        border: none;
        cursor: pointer;
        box-shadow: var(--glow-cyan);
        transition: var(--transition);
    }
    .btn-gradient:hover {
        transform: translateY(-2px);
        box-shadow: 0 0 35px rgba(0, 242, 254, 0.7);
        color: #000;
    }
    .btn-outline {
        background: transparent;
        border: 1px solid var(--border-glow);
        color: #fff;
        font-weight: 600;
        font-size: 0.92rem;
        padding: 10px 20px;
        border-radius: var(--radius-sm);
        display: inline-flex;
        align-items: center;
        gap: 8px;
        cursor: pointer;
        transition: var(--transition);
    }
    .btn-outline:hover {
        background: rgba(0, 242, 254, 0.1);
        border-color: var(--neon-cyan);
        transform: translateY(-2px);
    }
    .btn-magenta {
        background: linear-gradient(135deg, var(--neon-magenta), var(--neon-purple));
        color: #fff;
        font-weight: 700;
        font-size: 0.92rem;
        padding: 10px 22px;
        border-radius: var(--radius-sm);
        display: inline-flex;
        align-items: center;
        gap: 8px;
        border: none;
        cursor: pointer;
        box-shadow: var(--glow-magenta);
        transition: var(--transition);
    }
    .btn-magenta:hover {
        transform: translateY(-2px);
        box-shadow: 0 0 35px rgba(255, 0, 127, 0.7);
        color: #fff;
    }

    /* 板块通用 */
    .section-pad {
        padding: 85px 0;
        position: relative;
    }
    .section-alt {
        background: rgba(16, 20, 36, 0.6);
        border-top: 1px solid var(--border-glass);
        border-bottom: 1px solid var(--border-glass);
    }
    .section-head {
        margin-bottom: 46px;
        text-align: center;
    }
    .section-tag {
        display: inline-block;
        font-size: 0.8rem;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 2px;
        color: var(--neon-cyan);
        margin-bottom: 12px;
        padding: 4px 14px;
        background: rgba(0, 242, 254, 0.08);
        border-radius: 4px;
        border-left: 3px solid var(--neon-cyan);
    }
    .section-title {
        font-size: 2.15rem;
        font-weight: 800;
        line-height: 1.3;
        margin-bottom: 16px;
        background: linear-gradient(180deg, #ffffff 40%, #94a3b8 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }
    .section-desc {
        font-size: 1.05rem;
        color: var(--text-muted);
        max-width: 780px;
        margin: 0 auto;
        line-height: 1.7;
    }

    /* 内页分类特有 Hero: 舞台居中，左右价值点与按钮组 */
    .topic-hero {
        padding: 70px 0 90px;
        position: relative;
        background: linear-gradient(180deg, rgba(10, 12, 20, 0.75), var(--bg-dark)), url('/assets/images/04531dd17169cb51.webp') center/cover no-repeat;
    }
    .hero-stage-wrap {
        display: grid;
        grid-template-columns: 280px 1fr 280px;
        gap: 30px;
        align-items: center;
        margin-top: 40px;
    }
    .hero-center-stage {
        background: var(--bg-surface);
        border-radius: var(--radius-lg);
        border: 1px solid var(--border-glow);
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), var(--glow-cyan);
        overflow: hidden;
        position: relative;
    }
    .stage-media {
        position: relative;
        overflow: hidden;
    }
    .stage-media img {
        width: 100%;
        height: 380px;
        object-fit: cover;
        transition: transform 0.5s ease;
    }
    .stage-media:hover img {
        transform: scale(1.04);
    }
    .stage-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, transparent 40%, rgba(10, 12, 20, 0.95));
        display: flex;
        flex-direction: column;
        justify-content: flex-end;
        padding: 24px;
    }
    .stage-status-bar {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 12px;
    }
    .stream-res {
        background: rgba(0, 242, 254, 0.2);
        color: var(--neon-cyan);
        padding: 4px 10px;
        border-radius: 4px;
        font-size: 0.75rem;
        font-weight: 700;
        border: 1px solid var(--neon-cyan);
    }
    .stream-fps {
        font-size: 0.8rem;
        color: #fff;
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .hero-side-card {
        background: var(--bg-card);
        border: 1px solid var(--border-glass);
        padding: 24px;
        border-radius: var(--radius-md);
        display: flex;
        flex-direction: column;
        gap: 16px;
        backdrop-filter: blur(8px);
    }
    .side-item {
        display: flex;
        gap: 14px;
        align-items: flex-start;
    }
    .side-icon {
        width: 44px;
        height: 44px;
        border-radius: 10px;
        background: rgba(0, 242, 254, 0.1);
        border: 1px solid rgba(0, 242, 254, 0.25);
        color: var(--neon-cyan);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.15rem;
        flex-shrink: 0;
    }
    .side-text h4 {
        font-size: 1rem;
        color: #fff;
        margin-bottom: 4px;
    }
    .side-text p {
        font-size: 0.85rem;
        color: var(--text-muted);
        line-height: 1.5;
    }

    /* 板块2: 专题阵列网格 */
    .topics-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }
    .topic-card {
        background: var(--bg-card);
        border-radius: var(--radius-md);
        border: 1px solid var(--border-glass);
        overflow: hidden;
        transition: var(--transition);
        position: relative;
    }
    .topic-card:hover {
        transform: translateY(-6px);
        border-color: var(--border-glow);
        box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4), var(--glow-cyan);
    }
    .topic-cover {
        position: relative;
        height: 210px;
        overflow: hidden;
    }
    .topic-cover img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.6s ease;
    }
    .topic-card:hover .topic-cover img {
        transform: scale(1.08);
    }
    .topic-badge {
        position: absolute;
        top: 14px;
        left: 14px;
        background: rgba(10, 12, 20, 0.85);
        backdrop-filter: blur(8px);
        border: 1px solid var(--neon-magenta);
        color: var(--neon-magenta);
        padding: 4px 10px;
        border-radius: 4px;
        font-size: 0.75rem;
        font-weight: 700;
    }
    .topic-info {
        padding: 24px;
    }
    .topic-info h3 {
        font-size: 1.22rem;
        font-weight: 700;
        margin-bottom: 12px;
        color: #fff;
    }
    .topic-info p {
        font-size: 0.92rem;
        color: var(--text-muted);
        line-height: 1.6;
        margin-bottom: 18px;
    }
    .topic-specs {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin-bottom: 20px;
    }
    .spec-tag {
        font-size: 0.76rem;
        background: rgba(255, 255, 255, 0.05);
        color: var(--text-sub);
        padding: 3px 8px;
        border-radius: 4px;
        border: 1px solid rgba(255, 255, 255, 0.06);
    }

    /* 板块3: 极速分发与网络调度对比 */
    .network-bracket {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }
    .bracket-item {
        background: var(--bg-card);
        border: 1px solid var(--border-glass);
        border-radius: var(--radius-md);
        padding: 24px;
        position: relative;
    }
    .bracket-item::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 3px;
        background: linear-gradient(90deg, var(--neon-cyan), transparent);
    }
    .bracket-step {
        font-size: 0.8rem;
        font-weight: 800;
        color: var(--neon-cyan);
        margin-bottom: 10px;
    }
    .bracket-item h4 {
        font-size: 1.1rem;
        margin-bottom: 10px;
        color: #fff;
    }
    .bracket-item p {
        font-size: 0.88rem;
        color: var(--text-muted);
        line-height: 1.6;
    }

    /* 板块4: 音画规格深度拆解 (深色面板) */
    .decode-panel {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 36px;
        align-items: center;
        background: var(--bg-surface);
        border: 1px solid var(--border-glass);
        border-radius: var(--radius-lg);
        padding: 40px;
    }
    .decode-text h3 {
        font-size: 1.85rem;
        font-weight: 800;
        margin-bottom: 18px;
        color: #fff;
    }
    .decode-text p {
        color: var(--text-muted);
        margin-bottom: 24px;
        font-size: 0.98rem;
    }
    .decode-list {
        list-style: none;
        display: flex;
        flex-direction: column;
        gap: 14px;
    }
    .decode-list li {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 0.92rem;
        color: #cbd5e1;
    }
    .decode-list li i {
        color: var(--neon-cyan);
        font-size: 1rem;
    }
    .decode-img-box {
        position: relative;
        border-radius: var(--radius-md);
        overflow: hidden;
        border: 1px solid var(--border-glow);
    }

    /* 板块5: 体验对比矩阵 */
    .table-responsive {
        width: 100%;
        overflow-x: auto;
    }
    .compare-table {
        width: 100%;
        border-collapse: collapse;
        background: var(--bg-card);
        border-radius: var(--radius-md);
        overflow: hidden;
        border: 1px solid var(--border-glass);
    }
    .compare-table th, .compare-table td {
        padding: 18px 24px;
        text-align: left;
        border-bottom: 1px solid var(--border-glass);
    }
    .compare-table th {
        background: rgba(255, 255, 255, 0.04);
        color: #fff;
        font-size: 0.95rem;
        font-weight: 700;
    }
    .compare-table td {
        font-size: 0.92rem;
        color: var(--text-muted);
    }
    .compare-table tr:hover td {
        background: rgba(255, 255, 255, 0.02);
    }
    .highlight-cell {
        color: var(--neon-cyan) !important;
        font-weight: 700;
    }

    /* 板块6: 常见视听疑难拆解 (FAQ) */
    .faq-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    .faq-item {
        background: var(--bg-card);
        border: 1px solid var(--border-glass);
        padding: 26px;
        border-radius: var(--radius-md);
        transition: var(--transition);
    }
    .faq-item:hover {
        border-color: rgba(0, 242, 254, 0.3);
    }
    .faq-q {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 1.05rem;
        font-weight: 700;
        color: #fff;
        margin-bottom: 12px;
    }
    .faq-q i {
        color: var(--neon-cyan);
    }
    .faq-a {
        color: var(--text-muted);
        font-size: 0.92rem;
        line-height: 1.65;
    }

    /* 板块7: 运行稳定性与放映保障 */
    .metrics-bar {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        text-align: center;
    }
    .metric-box {
        background: var(--bg-card);
        border: 1px solid var(--border-glass);
        border-radius: var(--radius-md);
        padding: 28px 16px;
    }
    .metric-number {
        font-size: 2.2rem;
        font-weight: 800;
        color: #fff;
        background: linear-gradient(135deg, var(--neon-cyan), #0070f3);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        margin-bottom: 6px;
    }
    .metric-label {
        font-size: 0.88rem;
        color: var(--text-muted);
    }

    /* 板块8: 底部行动转化区 */
    .cta-banner {
        background: linear-gradient(135deg, rgba(21, 27, 48, 0.95), rgba(16, 20, 36, 0.95)), url('/assets/images/f465336b16915265.webp') center/cover;
        border: 1px solid var(--border-glow);
        border-radius: var(--radius-lg);
        padding: 60px 40px;
        text-align: center;
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), var(--glow-cyan);
    }
    .cta-banner h2 {
        font-size: 2.2rem;
        font-weight: 800;
        margin-bottom: 16px;
        color: #fff;
    }
    .cta-banner p {
        font-size: 1.05rem;
        color: var(--text-muted);
        max-width: 680px;
        margin: 0 auto 32px;
    }
    .cta-buttons {
        display: flex;
        justify-content: center;
        gap: 18px;
    }

    /* 底部固定转化条 */
    .fixed-action-bar {
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        background: rgba(10, 12, 20, 0.92);
        backdrop-filter: blur(14px);
        border-top: 1px solid var(--border-glow);
        padding: 14px 0;
        z-index: 999;
        display: flex;
        align-items: center;
    }
    .action-bar-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    .action-info {
        display: flex;
        align-items: center;
        gap: 16px;
    }
    .action-title {
        font-weight: 700;
        font-size: 1rem;
        color: #fff;
    }
    .action-sub {
        font-size: 0.85rem;
        color: var(--text-muted);
    }

    /* 页脚 */
    .site-footer {
        background: #07090e;
        border-top: 1px solid var(--border-glass);
        padding: 70px 0 100px; /* 留出底部转化条位置 */
        color: var(--text-sub);
        font-size: 0.9rem;
    }
    .footer-top {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 40px;
        margin-bottom: 50px;
    }
    .footer-brand h3 {
        color: #fff;
        font-size: 1.25rem;
        margin-bottom: 16px;
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .footer-brand p {
        color: var(--text-muted);
        line-height: 1.65;
        max-width: 340px;
    }
    .footer-col h4 {
        color: #fff;
        font-size: 1rem;
        margin-bottom: 18px;
    }
    .footer-col ul {
        list-style: none;
    }
    .footer-col li {
        margin-bottom: 10px;
    }
    .footer-col a:hover {
        color: var(--neon-cyan);
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.05);
        padding-top: 30px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 0.85rem;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
        .hero-stage-wrap {
            grid-template-columns: 1fr;
        }
        .hero-side-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
        }
        .topics-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .decode-panel {
            grid-template-columns: 1fr;
        }
        .footer-top {
            grid-template-columns: 1fr 1fr;
        }
    }
    @media (max-width: 768px) {
        .nav-menu {
            display: none;
        }
        .hero-side-card {
            grid-template-columns: 1fr;
        }
        .topics-grid {
            grid-template-columns: 1fr;
        }
        .network-bracket {
            grid-template-columns: 1fr;
        }
        .faq-grid {
            grid-template-columns: 1fr;
        }
        .metrics-bar {
            grid-template-columns: repeat(2, 1fr);
        }
        .action-sub {
            display: none;
        }
        .footer-top {
            grid-template-columns: 1fr;
        }
        .footer-bottom {
            flex-direction: column;
            gap: 12px;
            text-align: center;
        }
    }

/* roulang page: category1 */
:root {
            --bg-dark: #0a0c14;
            --bg-surface: #101424;
            --bg-card: #151b30;
            --bg-card-alt: #1c2440;
            --neon-cyan: #00f2fe;
            --neon-magenta: #ff007f;
            --neon-purple: #7928ca;
            --text-main: #f8fafc;
            --text-muted: #94a3b8;
            --text-sub: #64748b;
            --border-glow: rgba(0, 242, 254, 0.25);
            --border-glass: rgba(255, 255, 255, 0.08);
            --glow-cyan: 0 0 25px rgba(0, 242, 254, 0.45);
            --glow-magenta: 0 0 25px rgba(255, 0, 127, 0.4);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

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

        body {
            background-color: var(--bg-dark);
            color: var(--text-main);
            font-family: 'Noto Sans SC', sans-serif;
            line-height: 1.65;
            overflow-x: hidden;
            background-image: 
                radial-gradient(circle at 15% 15%, rgba(121, 40, 202, 0.15), transparent 45%),
                radial-gradient(circle at 85% 65%, rgba(0, 242, 254, 0.12), transparent 50%),
                radial-gradient(circle at 50% 90%, rgba(255, 0, 127, 0.08), transparent 40%);
            background-attachment: fixed;
            padding-bottom: 70px;
        }

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

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

        .container {
            width: 100%;
            max-width: 1260px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 12, 20, 0.88);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-glass);
            transition: var(--transition);
        }

        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 74px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.22rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
        }

        .brand-logo i {
            font-size: 1.5rem;
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            position: relative;
            padding: 6px 0;
        }

        .nav-link:hover, .nav-link.active {
            color: #fff;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta));
            border-radius: 2px;
        }

        .nav-action {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .badge-live {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 242, 254, 0.1);
            border: 1px solid rgba(0, 242, 254, 0.3);
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.78rem;
            color: var(--neon-cyan);
        }

        .badge-dot {
            width: 6px;
            height: 6px;
            background-color: var(--neon-cyan);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--neon-cyan);
            animation: pulse 1.8s infinite;
        }

        @keyframes pulse {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.85); }
        }

        .btn-gradient {
            background: linear-gradient(135deg, var(--neon-cyan), #0070f3);
            color: #030a1c;
            font-weight: 700;
            font-size: 0.92rem;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: none;
            cursor: pointer;
            box-shadow: var(--glow-cyan);
            transition: var(--transition);
        }

        .btn-gradient:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 35px rgba(0, 242, 254, 0.7);
            color: #000;
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--border-glow);
            color: #fff;
            font-weight: 600;
            font-size: 0.92rem;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-outline:hover {
            background: rgba(0, 242, 254, 0.1);
            border-color: var(--neon-cyan);
            transform: translateY(-2px);
        }

        /* 通用板块与排版 */
        .section-pad {
            padding: 90px 0;
            position: relative;
        }

        .section-alt {
            background: rgba(16, 20, 36, 0.65);
            border-top: 1px solid var(--border-glass);
            border-bottom: 1px solid var(--border-glass);
        }

        .section-head {
            margin-bottom: 50px;
            text-align: center;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--neon-cyan);
            margin-bottom: 12px;
            padding: 4px 14px;
            background: rgba(0, 242, 254, 0.08);
            border-radius: 4px;
            border-left: 3px solid var(--neon-cyan);
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            background: linear-gradient(180deg, #ffffff 40%, #94a3b8 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* 1. Hero 落地页强转化首屏 */
        .hero-theater {
            padding: 90px 0 100px;
            position: relative;
            background-image: linear-gradient(180deg, rgba(10, 12, 20, 0.8) 0%, rgba(10, 12, 20, 0.95) 100%), url('/assets/images/04531dd17169cb51.webp');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--border-glass);
        }

        .hero-wrapper {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: center;
        }

        .hero-badge-row {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 20px;
        }

        .hero-tag {
            font-size: 0.82rem;
            background: rgba(255, 0, 127, 0.15);
            border: 1px solid rgba(255, 0, 127, 0.4);
            color: #ff3399;
            padding: 4px 12px;
            border-radius: 20px;
            font-weight: 600;
        }

        .hero-h1 {
            font-size: 2.85rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 22px;
            letter-spacing: -1px;
        }

        .hero-h1 span {
            background: linear-gradient(135deg, var(--neon-cyan) 10%, var(--neon-magenta) 90%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-lead {
            font-size: 1.1rem;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 30px;
        }

        .hero-bullets {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-bottom: 36px;
        }

        .hero-bullet-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.02rem;
            color: #e2e8f0;
        }

        .hero-bullet-item i {
            color: var(--neon-cyan);
            font-size: 1.1rem;
            filter: drop-shadow(0 0 6px var(--neon-cyan));
        }

        .hero-cta-group {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }

        .hero-trust-strip {
            display: flex;
            align-items: center;
            gap: 24px;
            padding-top: 24px;
            border-top: 1px solid var(--border-glass);
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-sub);
        }

        .trust-item i {
            color: #10b981;
        }

        .hero-visual-card {
            background: rgba(21, 27, 48, 0.7);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: 0 20px 45px rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(12px);
            position: relative;
            overflow: hidden;
        }

        .visual-preview-img {
            width: 100%;
            height: 250px;
            object-fit: cover;
            border-radius: var(--radius-md);
            margin-bottom: 20px;
            border: 1px solid var(--border-glass);
        }

        .stream-meta-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
        }

        .meta-box {
            background: rgba(10, 12, 20, 0.6);
            padding: 12px 14px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-glass);
        }

        .meta-label {
            font-size: 0.75rem;
            color: var(--text-sub);
            text-transform: uppercase;
        }

        .meta-val {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--neon-cyan);
            margin-top: 2px;
        }

        /* 2. 卖点三连板块 */
        .trio-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .trio-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .trio-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
            opacity: 0;
            transition: var(--transition);
        }

        .trio-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-glow);
            box-shadow: var(--glow-cyan);
        }

        .trio-card:hover::before {
            opacity: 1;
        }

        .trio-icon-wrap {
            width: 58px;
            height: 58px;
            border-radius: var(--radius-sm);
            background: rgba(0, 242, 254, 0.08);
            border: 1px solid rgba(0, 242, 254, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 22px;
            font-size: 1.5rem;
            color: var(--neon-cyan);
        }

        .trio-title {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }

        .trio-text {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .trio-tag {
            display: inline-block;
            margin-top: 18px;
            font-size: 0.78rem;
            font-weight: 600;color: var(--neon-cyan);
            letter-spacing: 0.5px;
        }

        /* 3. 场景演示 */
        .scenario-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .scenario-showcase {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-glass);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
        }

        .scenario-showcase img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            transition: var(--transition);
        }

        .scenario-showcase:hover img {
            transform: scale(1.03);
        }

        .scenario-badge-overlay {
            position: absolute;
            top: 20px;
            left: 20px;
            background: rgba(10, 12, 20, 0.85);
            backdrop-filter: blur(10px);
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.82rem;
            color: var(--neon-cyan);
            border: 1px solid var(--border-glow);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .scenario-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .scenario-item {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            transition: var(--transition);
        }

        .scenario-item:hover {
            border-color: var(--neon-magenta);
            transform: translateX(6px);
            box-shadow: 0 10px 30px rgba(255, 0, 127, 0.15);
        }

        .scenario-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 8px;
        }

        .scenario-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .scenario-title i {
            color: var(--neon-magenta);
        }

        .scenario-indicator {
            font-size: 0.75rem;
            color: #10b981;
            background: rgba(16, 185, 129, 0.12);
            padding: 2px 10px;
            border-radius: 12px;
            border: 1px solid rgba(16, 185, 129, 0.3);
        }

        .scenario-desc {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 4. 社会认同与实测表现 */
        .social-proof-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-bottom: 50px;
        }

        .stat-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            transition: var(--transition);
        }

        .stat-card:hover {
            border-color: var(--border-glow);
            transform: translateY(-4px);
        }

        .stat-num {
            font-size: 2.6rem;
            font-family: 'Outfit', sans-serif;
            font-weight: 800;
            background: linear-gradient(135deg, #fff, var(--neon-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

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

        .feed-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .feed-body {
            font-size: 0.93rem;
            color: #cbd5e1;
            line-height: 1.7;
            margin-bottom: 20px;
            position: relative;
        }

        .feed-user {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border-glass);
            padding-top: 16px;
        }

        .user-avatar-hex {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--neon-purple), var(--neon-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #fff;
            font-size: 0.9rem;
        }

        .user-info h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
        }

        .user-info span {
            font-size: 0.78rem;
            color: var(--text-sub);
        }

        /* 5. 对比差异表 */
        .compare-wrap {
            overflow-x: auto;
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 10px;
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 680px;
        }

        .compare-table th, .compare-table td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-glass);
        }

        .compare-table th {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-muted);
            text-transform: uppercase;
            background: rgba(10, 12, 20, 0.4);
        }

        .compare-table th.highlight-col {
            color: var(--neon-cyan);
            background: rgba(0, 242, 254, 0.05);
            border-left: 1px solid var(--border-glow);
            border-right: 1px solid var(--border-glow);
        }

        .compare-table td.highlight-col {
            background: rgba(0, 242, 254, 0.03);
            border-left: 1px solid var(--border-glow);
            border-right: 1px solid var(--border-glow);
            font-weight: 600;
            color: #fff;
        }

        .table-feat {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.98rem;
            color: #f1f5f9;
        }

        .status-positive {
            color: #10b981;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .status-negative {
            color: var(--text-sub);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* 6. 资讯与解码实证 */
        .intel-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .intel-card {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }

        .intel-card:hover {
            transform: translateY(-5px);
            border-color: var(--border-glow);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
        }

        .intel-thumb {
            height: 180px;
            width: 100%;
            overflow: hidden;
            position: relative;
        }

        .intel-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .intel-card:hover .intel-thumb img {
            transform: scale(1.06);
        }

        .intel-meta {
            position: absolute;
            bottom: 12px;
            left: 12px;
            background: rgba(10, 12, 20, 0.85);
            padding: 3px 10px;
            border-radius: 4px;
            font-size: 0.72rem;
            color: var(--neon-cyan);
        }

        .intel-content {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .intel-title {
            font-size: 1.15rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 12px;
            color: #fff;
        }

        .intel-summary {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 18px;
            flex: 1;
        }

        .intel-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-sub);
            border-top: 1px solid var(--border-glass);
            padding-top: 14px;
        }

        /* 7. 异议拆解 (FAQ/服务疑虑解答) */
        .faq-matrix {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 22px 28px;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(0, 242, 254, 0.4);
        }

        .faq-question {
            font-size: 1.1rem;
            font-weight: 700;
            color: #f8fafc;
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 10px;
        }

        .faq-question i {
            color: var(--neon-cyan);
            font-size: 0.95rem;
        }

        .faq-answer {
            font-size: 0.94rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 8. 保障与服务准则条 */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .guarantee-box {
            background: var(--bg-surface);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 30px 20px;
            text-align: center;
            position: relative;
        }

        .guarantee-box i {
            font-size: 2.2rem;
            margin-bottom: 16px;
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .guarantee-box h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }

        .guarantee-box p {
            font-size: 0.85rem;
            color: var(--text-sub);
            line-height: 1.6;
        }

        /* 9. 底部固定转化条 (Sticky Bar) */
        .sticky-convert-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 70px;
            background: rgba(10, 12, 20, 0.94);
            backdrop-filter: blur(18px);
            border-top: 1px solid var(--border-glow);
            z-index: 999;
            box-shadow: 0 -10px 25px rgba(0, 0, 0, 0.6);
            display: flex;
            align-items: center;
        }

        .convert-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .convert-info {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .convert-tag {
            background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
            color: #000;
            font-size: 0.75rem;
            font-weight: 800;
            padding: 4px 10px;
            border-radius: 4px;
            text-transform: uppercase;
        }

        .convert-desc {
            font-size: 0.95rem;
            color: #f8fafc;
            font-weight: 600;
        }

        .convert-desc span {
            color: var(--neon-cyan);
        }

        .convert-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        /* 统一页脚 */
        .site-footer {
            background: #07090e;
            border-top: 1px solid var(--border-glass);
            padding: 70px 0 35px;
            position: relative;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 50px;
        }

        .footer-brand h3 {
            font-size: 1.25rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-sub);
            line-height: 1.8;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background: var(--neon-cyan);
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-col a {
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        .footer-col a:hover {
            color: var(--neon-cyan);
            padding-left: 4px;
        }

        .footer-bottom {
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            color: var(--text-sub);
            flex-wrap: wrap;
            gap: 12px;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-wrapper {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-visual-card {
                max-width: 600px;
                margin: 0 auto;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .social-proof-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-top {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }
            .hero-h1 {
                font-size: 2.2rem;
            }
            .trio-grid {
                grid-template-columns: 1fr;
            }
            .feed-grid {
                grid-template-columns: 1fr;
            }
            .intel-grid {
                grid-template-columns: 1fr;
            }
            .section-pad {
                padding: 60px 0;
            }
            .convert-desc {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .hero-h1 {
                font-size: 1.8rem;
            }
            .stream-meta-grid {
                grid-template-columns: 1fr;
            }
            .social-proof-strip {
                grid-template-columns: 1fr;
            }
            .guarantee-grid {
                grid-template-columns: 1fr;
            }
            .footer-top {
                grid-template-columns: 1fr;
            }
            .hero-trust-strip {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
        }

/* roulang page: category3 */
:root {
      --bg-dark: #0a0c14;
      --bg-surface: #101424;
      --bg-card: #151b30;
      --bg-card-alt: #1c2440;
      --neon-cyan: #00f2fe;
      --neon-magenta: #ff007f;
      --neon-purple: #7928ca;
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
      --text-sub: #64748b;
      --border-glow: rgba(0, 242, 254, 0.25);
      --border-glass: rgba(255, 255, 255, 0.08);
      --glow-cyan: 0 0 25px rgba(0, 242, 254, 0.45);
      --glow-magenta: 0 0 25px rgba(255, 0, 127, 0.4);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 22px;
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: 'Noto Sans SC', sans-serif;
      line-height: 1.65;
      overflow-x: hidden;
      background-image: radial-gradient(circle at 15% 15%, rgba(121, 40, 202, 0.15), transparent 45%),
                        radial-gradient(circle at 85% 65%, rgba(0, 242, 254, 0.12), transparent 50%),
                        radial-gradient(circle at 50% 90%, rgba(255, 0, 127, 0.08), transparent 40%);
      background-attachment: fixed;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: 1260px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 12, 20, 0.85);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-glass);
      transition: var(--transition);
    }
    .nav-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.25rem;
      font-weight: 800;
      color: #fff;
      letter-spacing: -0.5px;
    }
    .brand-logo i {
      font-size: 1.5rem;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
      padding: 6px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: #fff;
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 100%;
      height: 2px;
      background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta));
      border-radius: 2px;
    }
    .nav-action {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .badge-live {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(0, 242, 254, 0.1);
      border: 1px solid rgba(0, 242, 254, 0.3);
      padding: 5px 12px;
      border-radius: 20px;
      font-size: 0.78rem;
      color: var(--neon-cyan);
    }
    .badge-dot {
      width: 6px;
      height: 6px;
      background-color: var(--neon-cyan);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--neon-cyan);
      animation: pulse 1.8s infinite;
    }
    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(1.3); }
    }
    .btn-gradient {
      background: linear-gradient(135deg, var(--neon-cyan), #0070f3);
      color: #030a1c;
      font-weight: 700;
      font-size: 0.92rem;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border: none;
      cursor: pointer;
      box-shadow: var(--glow-cyan);
      transition: var(--transition);
    }
    .btn-gradient:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 35px rgba(0, 242, 254, 0.7);
      color: #000;
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--border-glow);
      color: #fff;
      font-weight: 600;
      font-size: 0.92rem;
      padding: 10px 20px;
      border-radius: var(--radius-sm);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      cursor: pointer;
      transition: var(--transition);
    }
    .btn-outline:hover {
      background: rgba(0, 242, 254, 0.1);
      border-color: var(--neon-cyan);
      transform: translateY(-2px);
    }

    /* 板块通用 */
    .section-pad {
      padding: 85px 0;
      position: relative;
    }
    .section-alt {
      background: rgba(16, 20, 36, 0.75);
      border-top: 1px solid var(--border-glass);
      border-bottom: 1px solid var(--border-glass);
    }
    .section-head {
      margin-bottom: 48px;
      text-align: center;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 2px;
      color: var(--neon-cyan);
      margin-bottom: 12px;
      padding: 4px 14px;
      background: rgba(0, 242, 254, 0.08);
      border-radius: 4px;
      border-left: 3px solid var(--neon-cyan);
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      line-height: 1.35;
      margin-bottom: 16px;
      background: linear-gradient(180deg, #ffffff 40%, #94a3b8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .section-desc {
      font-size: 1.02rem;
      color: var(--text-muted);
      max-width: 760px;
      margin: 0 auto;
      line-height: 1.7;
    }

    /* 1. 分类首屏：视听解码科技Banner */
    .cat-hero {
      position: relative;
      padding: 75px 0 95px;
      background: linear-gradient(180deg, rgba(10, 12, 20, 0.6) 0%, rgba(10, 12, 20, 0.95) 100%),
                  url('/assets/images/f465336b16915265.webp') center/cover no-repeat;
      border-bottom: 1px solid var(--border-glass);
    }
    .hero-wrapper {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 50px;
      align-items: center;
    }
    .hero-badge-wrap {
      display: flex;
      gap: 12px;
      margin-bottom: 18px;
      flex-wrap: wrap;
    }
    .tech-pill {
      font-size: 0.76rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 4px;
      background: rgba(121, 40, 202, 0.25);
      border: 1px solid rgba(121, 40, 202, 0.5);
      color: #d8b4fe;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .cat-h1 {
      font-size: 2.65rem;
      font-weight: 800;
      line-height: 1.28;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .cat-h1 span {
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .cat-summary {
      font-size: 1.05rem;
      color: var(--text-muted);
      margin-bottom: 30px;
      line-height: 1.75;
    }
    .hero-btn-group {
      display: flex;
      gap: 16px;
      align-items: center;
    }
    .hero-monitor-card {
      background: rgba(21, 27, 48, 0.7);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-lg);
      padding: 28px;
      backdrop-filter: blur(12px);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    }
    .monitor-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 16px;
      margin-bottom: 20px;
      border-bottom: 1px solid var(--border-glass);
    }
    .monitor-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .monitor-status {
      font-size: 0.75rem;
      padding: 3px 8px;
      border-radius: 4px;
      background: rgba(0, 242, 254, 0.15);
      color: var(--neon-cyan);
      font-weight: 600;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }
    .metric-item {
      background: rgba(16, 20, 36, 0.6);
      padding: 14px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-glass);
    }
    .metric-val {
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--neon-cyan);
      font-family: 'Outfit', sans-serif;
      margin-bottom: 4px;
    }
    .metric-label {
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    /* 2. 核心架构卖点三连 */
    .pillar-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .pillar-card {
      background: var(--bg-card);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      padding: 36px 28px;
      position: relative;
      overflow: hidden;
      transition: var(--transition);
    }
    .pillar-card:hover {
      transform: translateY(-6px);
      border-color: var(--border-glow);
      box-shadow: 0 12px 30px rgba(0, 242, 254, 0.15);
    }
    .pillar-icon {
      width: 58px;
      height: 58px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(0, 242, 254, 0.1), rgba(121, 40, 202, 0.2));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.55rem;
      color: var(--neon-cyan);
      margin-bottom: 22px;
      border: 1px solid rgba(0, 242, 254, 0.2);
    }
    .pillar-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: #fff;
    }
    .pillar-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.68;
    }
    .pillar-tag {
      margin-top: 18px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.8rem;
      color: var(--neon-cyan);
      font-weight: 600;
    }

    /* 3. 解码技术管线流程 */
    .pipeline-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .pipeline-step {
      background: var(--bg-surface);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      padding: 26px 20px;
      position: relative;
      transition: var(--transition);
    }
    .pipeline-step:hover {
      border-color: var(--neon-purple);
      transform: translateY(-4px);
    }
    .step-number {
      font-size: 1.8rem;
      font-weight: 900;
      font-family: 'Outfit', sans-serif;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 12px;
    }
    .step-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 10px;
    }
    .step-text {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 4. 实测画质与对比差异 (Before / After / Codec Matrix) */
    .compare-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      align-items: center;
    }
    .compare-preview {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-glow);
      box-shadow: 0 15px 35px rgba(0, 0, 0, 0.7);
    }
    .compare-preview img {
      width: 100%;
      height: 380px;
      object-fit: cover;
      display: block;
    }
    .compare-badge-left {
      position: absolute;
      top: 18px;
      left: 18px;
      background: rgba(10, 12, 20, 0.85);
      border: 1px solid var(--neon-cyan);
      color: var(--neon-cyan);
      font-size: 0.82rem;
      font-weight: 700;
      padding: 6px 14px;
      border-radius: 6px;
      backdrop-filter: blur(8px);
    }
    .compare-badge-right {
      position: absolute;
      bottom: 18px;
      right: 18px;
      background: rgba(255, 0, 127, 0.15);
      border: 1px solid var(--neon-magenta);
      color: #ff80bf;
      font-size: 0.78rem;
      font-weight: 600;
      padding: 5px 12px;
      border-radius: 6px;
    }
    .compare-info h3 {
      font-size: 1.85rem;
      font-weight: 800;
      color: #fff;
      margin-bottom: 18px;
      line-height: 1.35;
    }
    .compare-info p {
      font-size: 0.96rem;
      color: var(--text-muted);
      line-height: 1.72;
      margin-bottom: 24px;
    }
    .compare-specs {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .compare-specs li {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.94rem;
      color: var(--text-main);
    }
    .compare-specs i {
      color: var(--neon-cyan);
      font-size: 1.1rem;
    }

    /* 5. 硬件与平台解码兼容性矩阵 */
    .compat-table-card {
      background: var(--bg-card);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      overflow-x: auto;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    }
    .compat-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }
    .compat-table th {
      background: rgba(16, 20, 36, 0.95);
      padding: 18px 24px;
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--neon-cyan);
      border-bottom: 1px solid var(--border-glass);
      letter-spacing: 0.5px;
    }
    .compat-table td {
      padding: 18px 24px;
      font-size: 0.92rem;
      border-bottom: 1px solid var(--border-glass);
      color: var(--text-muted);
    }
    .compat-table tr:hover td {
      background: rgba(255, 255, 255, 0.02);
      color: #fff;
    }
    .status-tag-active {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #10b981;
      font-weight: 600;
      font-size: 0.82rem;
    }
    .status-tag-ultra {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--neon-cyan);
      font-weight: 600;
      font-size: 0.82rem;
    }

    /* 6. 技术资讯与调优指引 */
    .article-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .article-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .article-card:hover {
      transform: translateY(-6px);
      border-color: var(--border-glow);
      box-shadow: 0 15px 30px rgba(0, 0, 0, 0.6);
    }
    .article-thumb {
      height: 190px;
      position: relative;
      overflow: hidden;
    }
    .article-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .article-card:hover .article-thumb img {
      transform: scale(1.05);
    }
    .article-pill {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(10, 12, 20, 0.85);
      border: 1px solid var(--border-glow);
      color: var(--neon-cyan);
      font-size: 0.72rem;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 4px;
    }
    .article-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .article-title {
      font-size: 1.12rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
      line-height: 1.45;
    }
    .article-snippet {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
      flex: 1;
    }
    .article-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.78rem;
      color: var(--text-sub);
      border-top: 1px solid var(--border-glass);
      padding-top: 14px;
    }
    .article-meta span i {
      margin-right: 5px;
      color: var(--neon-cyan);
    }

    /* 7. 异议拆解与视听问答 */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-box {
      background: var(--bg-card);
      border: 1px solid var(--border-glass);
      border-radius: var(--radius-md);
      padding: 24px 28px;
      transition: var(--transition);
    }
    .faq-box:hover {
      border-color: var(--border-glow);
    }
    .faq-question {
      font-size: 1.08rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .faq-question i {
      color: var(--neon-cyan);
      font-size: 1.15rem;
    }
    .faq-answer {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
      padding-left: 28px;
    }

    /* 8. 视听服务指标保障条 */
    .guarantee-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      background: linear-gradient(135deg, rgba(21, 27, 48, 0.9), rgba(16, 20, 36, 0.95));
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-lg);
      padding: 32px 36px;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    }
    .guarantee-item {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .guarantee-icon {
      font-size: 2rem;
      color: var(--neon-cyan);
    }
    .guarantee-text h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 4px;
    }
    .guarantee-text p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 底部固定转化条 */
    .sticky-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      z-index: 999;
      background: rgba(10, 12, 20, 0.94);
      backdrop-filter: blur(16px);
      border-top: 1px solid var(--border-glow);
      padding: 14px 0;
      box-shadow: 0 -10px 25px rgba(0, 0, 0, 0.6);
    }
    .sticky-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .sticky-info {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .sticky-indicator {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--neon-cyan);
      box-shadow: 0 0 10px var(--neon-cyan);
      animation: pulse 1.5s infinite;
    }
    .sticky-title {
      font-size: 0.96rem;
      font-weight: 700;
      color: #fff;
    }
    .sticky-sub {
      font-size: 0.82rem;
      color: var(--text-muted);
    }
    .sticky-btn-group {
      display: flex;
      gap: 12px;
      align-items: center;
    }

    /* 页脚 */
    .site-footer {
      background: #06080e;
      border-top: 1px solid var(--border-glass);
      padding: 70px 0 95px;
      color: var(--text-muted);
      font-size: 0.9rem;
    }
    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 50px;
    }
    .footer-brand h3 {
      font-size: 1.25rem;
      font-weight: 800;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 16px;
    }
    .footer-brand p {
      line-height: 1.7;
      max-width: 360px;
      font-size: 0.88rem;
    }
    .footer-col h4 {
      font-size: 0.96rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 18px;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-col a {
      color: var(--text-muted);
      font-size: 0.88rem;
    }
    .footer-col a:hover {
      color: var(--neon-cyan);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 26px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.82rem;
      color: var(--text-sub);
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .pipeline-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .guarantee-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
      }
    }
    @media (max-width: 768px) {
      .nav-menu {
        display: none;
      }
      .cat-h1 {
        font-size: 2.1rem;
      }
      .pillar-grid {
        grid-template-columns: 1fr;
      }
      .compare-container {
        grid-template-columns: 1fr;
      }
      .article-grid {
        grid-template-columns: 1fr;
      }
      .guarantee-bar {
        grid-template-columns: 1fr;
      }
      .sticky-sub {
        display: none;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
      }
    }

/* roulang page: category4 */
:root {
  --bg-dark: #0a0c14;
  --bg-surface: #101424;
  --bg-card: #151b30;
  --bg-card-alt: #1c2440;
  --neon-cyan: #00f2fe;
  --neon-magenta: #ff007f;
  --neon-purple: #7928ca;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-sub: #64748b;
  --border-glow: rgba(0, 242, 254, 0.25);
  --border-glass: rgba(255, 255, 255, 0.08);
  --glow-cyan: 0 0 25px rgba(0, 242, 254, 0.45);
  --glow-magenta: 0 0 25px rgba(255, 0, 127, 0.4);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: 'Noto Sans SC', sans-serif;
  line-height: 1.65;
  overflow-x: hidden;
  background-image: radial-gradient(circle at 15% 15%, rgba(121, 40, 202, 0.15), transparent 45%),
                    radial-gradient(circle at 85% 65%, rgba(0, 242, 254, 0.12), transparent 50%),
                    radial-gradient(circle at 50% 90%, rgba(255, 0, 127, 0.08), transparent 40%);
  background-attachment: fixed;
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
.container {
  width: 100%;
  max-width: 1260px;
  margin: 0 auto;
  padding: 0 24px;
}
/* 顶部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 12, 20, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-glass);
  transition: var(--transition);
}
.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
}
.brand-logo i {
  font-size: 1.5rem;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}
.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 6px 0;
}
.nav-link:hover, .nav-link.active {
  color: #fff;
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta));
  border-radius: 2px;
}
.nav-action {
  display: flex;
  align-items: center;
  gap: 16px;
}
.badge-live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.3);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.78rem;
  color: var(--neon-cyan);
}
.badge-dot {
  width: 6px;
  height: 6px;
  background-color: var(--neon-cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--neon-cyan);
  animation: pulse 1.8s infinite;
}
@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.6; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.6; }
}
.btn-gradient {
  background: linear-gradient(135deg, var(--neon-cyan), #0070f3);
  color: #030a1c;
  font-weight: 700;
  font-size: 0.92rem;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  cursor: pointer;
  box-shadow: var(--glow-cyan);
  transition: var(--transition);
}
.btn-gradient:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 35px rgba(0, 242, 254, 0.7);
  color: #000;
}
.btn-outline {
  background: transparent;
  border: 1px solid var(--border-glow);
  color: #fff;
  font-weight: 600;
  font-size: 0.92rem;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: var(--transition);
}
.btn-outline:hover {
  background: rgba(0, 242, 254, 0.1);
  border-color: var(--neon-cyan);
  transform: translateY(-2px);
}

/* 通用板块与排版 */
.section-pad {
  padding: 85px 0;
  position: relative;
}
.section-alt {
  background: rgba(16, 20, 36, 0.65);
  border-top: 1px solid var(--border-glass);
  border-bottom: 1px solid var(--border-glass);
}
.section-head {
  margin-bottom: 48px;
  text-align: center;
}
.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--neon-cyan);
  margin-bottom: 12px;
  padding: 4px 14px;
  background: rgba(0, 242, 254, 0.08);
  border-radius: 4px;
  border-left: 3px solid var(--neon-cyan);
}
.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  background: linear-gradient(180deg, #ffffff 40%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto;
  line-height: 1.7;
}

/* 1. Hero 视频官网风格：全宽视频遮罩 + 播放按钮 + 试用 CTA */
.video-hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: linear-gradient(rgba(10, 12, 20, 0.6), rgba(10, 12, 20, 0.85)), url('/assets/images/f465336b16915265.webp');
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border-glass);
  padding: 90px 0 110px;
}
.video-hero-inner {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}
.play-trigger-wrap {
  margin: 0 auto 36px;
  display: inline-block;
  position: relative;
}
.play-pulse-btn {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #050b17;
  font-size: 2rem;
  padding-left: 5px;
  box-shadow: 0 0 35px rgba(0, 242, 254, 0.6);
  cursor: pointer;
  transition: var(--transition);
  animation: radar 2.4s infinite;
}
.play-pulse-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 0 50px rgba(255, 0, 127, 0.8);
}
@keyframes radar {
  0% { box-shadow: 0 0 0 0 rgba(0, 242, 254, 0.5); }
  70% { box-shadow: 0 0 0 25px rgba(0, 242, 254, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 242, 254, 0); }
}
.video-hero h1 {
  font-size: 2.7rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.video-hero h1 span {
  background: linear-gradient(135deg, var(--neon-cyan) 30%, var(--neon-magenta) 90%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.video-hero p {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 760px;
  margin: 0 auto 32px;
}
.video-hero-actions {
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

/* 2. 卖点三连：线路核心优势 */
.tri-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.tri-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 36px 30px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.tri-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
  opacity: 0;
  transition: var(--transition);
}
.tri-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}
.tri-card:hover::before {
  opacity: 1;
}
.tri-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--neon-cyan);
  margin-bottom: 22px;
}
.tri-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  font-weight: 700;
}
.tri-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* 3. 场景演示：多场景分流响应 */
.scenario-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}
.scenario-info h3 {
  font-size: 1.9rem;
  font-weight: 800;
  margin-bottom: 18px;
  line-height: 1.35;
}
.scenario-info p {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: 24px;
}
.scenario-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.step-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--bg-card);
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-glass);
}
.step-num {
  font-family: 'Outfit', sans-serif;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--neon-cyan);
  line-height: 1;
  padding-top: 3px;
}
.step-item h4 {
  font-size: 1rem;
  margin-bottom: 4px;
  color: #fff;
}
.step-item p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 0;
  line-height: 1.5;
}
.scenario-visual {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-glow);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
}
.scenario-badge-overlay {
  position: absolute;
  top: 18px;
  right: 18px;
  background: rgba(10, 12, 20, 0.85);
  border: 1px solid var(--border-glow);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--neon-cyan);
  backdrop-filter: blur(8px);
}

/* 4. 社会认同与实测指标 */
.metrics-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}
.metric-box {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  padding: 28px 20px;
  border-radius: var(--radius-md);
  text-align: center;
}
.metric-value {
  font-family: 'Outfit', sans-serif;
  font-size: 2.6rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
  margin-bottom: 8px;
  background: linear-gradient(135deg, #fff, var(--neon-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.metric-label {
  font-size: 0.9rem;
  color: var(--text-muted);
}
.proof-stream {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.proof-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.proof-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.node-name {
  font-weight: 700;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.ping-tag {
  font-size: 0.8rem;
  color: #10b981;
  background: rgba(16, 185, 129, 0.12);
  padding: 3px 8px;
  border-radius: 4px;
  font-weight: 600;
}
.proof-body {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 5. 对比差异：传统通道 vs 星空专属线路 */
.compare-container {
  overflow-x: auto;
}
.compare-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
  overflow: hidden;
}
.compare-table th, .compare-table td {
  padding: 20px 24px;
  text-align: left;
  border-bottom: 1px solid var(--border-glass);
}
.compare-table th {
  background: var(--bg-surface);
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
}
.compare-table tr:last-child td {
  border-bottom: none;
}
.compare-table .highlight-col {
  background: rgba(0, 242, 254, 0.04);
  color: #fff;
  font-weight: 600;
  border-left: 1px solid rgba(0, 242, 254, 0.15);
  border-right: 1px solid rgba(0, 242, 254, 0.15);
}
.compare-icon-ok {
  color: var(--neon-cyan);
  margin-right: 6px;
}
.compare-icon-no {
  color: var(--text-sub);
  margin-right: 6px;
}

/* 6. 异议拆解与稳定保障 */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.faq-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 26px 28px;
}
.faq-card h4 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
}
.faq-card h4 i {
  color: var(--neon-cyan);
}
.faq-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* 7. 保障承诺条 */
.guarantee-bar {
  background: linear-gradient(90deg, rgba(121, 40, 202, 0.25), rgba(0, 242, 254, 0.2));
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}
.guarantee-content h3 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 8px;
}
.guarantee-content p {
  color: var(--text-muted);
  font-size: 0.98rem;
  max-width: 680px;
  line-height: 1.6;
}

/* 8. 底部固定转化条 (Sticky Bar) */
.fixed-bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  z-index: 990;
  background: rgba(16, 20, 36, 0.94);
  backdrop-filter: blur(14px);
  border-top: 1px solid var(--border-glow);
  padding: 14px 0;
  box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.5);
  animation: slideUp 0.4s ease-out;
}
@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}
.fixed-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.fixed-bar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}
.fixed-status {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: #10b981;
  box-shadow: 0 0 10px #10b981;
}
.fixed-text strong {
  font-size: 1rem;
  color: #fff;
  display: block;
}
.fixed-text span {
  font-size: 0.82rem;
  color: var(--text-muted);
}
.fixed-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 页脚样式 */
.site-footer {
  background: #080a10;
  border-top: 1px solid var(--border-glass);
  padding: 80px 0 110px;
  color: var(--text-muted);
  font-size: 0.92rem;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}
.footer-brand h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-brand p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
  max-width: 380px;
}
.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
}
.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-col a:hover {
  color: var(--neon-cyan);
}
.footer-bottom {
  border-top: 1px solid var(--border-glass);
  padding-top: 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-sub);
}

/* 响应式断点适配 */
@media (max-width: 1024px) {
  .tri-features {
    grid-template-columns: repeat(2, 1fr);
  }
  .scenario-grid {
    grid-template-columns: 1fr;
  }
  .metrics-row {
    grid-template-columns: repeat(2, 1fr);
  }
  .proof-stream {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  .video-hero h1 {
    font-size: 2.1rem;
  }
  .tri-features {
    grid-template-columns: 1fr;
  }
  .faq-grid {
    grid-template-columns: 1fr;
  }
  .guarantee-bar {
    flex-direction: column;
    text-align: center;
    padding: 30px 20px;
  }
  .fixed-bar-inner {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}