/* roulang page: index */
:root {
      --primary-color: #e50914;
      --primary-hover: #b80710;
      --bg-dark: #0e1015;
      --bg-card: #161922;
      --bg-alt: #1c202c;
      --text-main: #f5f6f9;
      --text-muted: #9ba3b4;
      --border-color: #272c3d;
      --accent-color: #00d2be;
      --radius-sm: 6px;
      --radius-md: 12px;
      --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.25);
      --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.45);
      --transition: all 0.25s ease-in-out;
    }

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

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

    a {
      color: var(--text-main);
      text-decoration: none;
      transition: var(--transition);
    }
    a:hover {
      color: var(--primary-color);
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
      border-radius: var(--radius-sm);
    }

    /* Header & Nav */
    .site-header {
      background: rgba(14, 16, 21, 0.95);
      backdrop-filter: blur(12px);
      position: sticky;
      top: 0;
      z-index: 1000;
      border-bottom: 1px solid var(--border-color);
      padding: 0.85rem 0;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .brand-logo {
      font-size: 1.25rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 8px;
      color: #fff;
    }
    .brand-logo span {
      color: var(--primary-color);
    }
    .header-tag {
      background: rgba(229, 9, 20, 0.15);
      color: var(--primary-color);
      font-size: 0.75rem;
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
      border: 1px solid rgba(229, 9, 20, 0.3);
    }
    .nav-links {
      display: flex;
      gap: 1.5rem;
      list-style: none;
      margin: 0;
      align-items: center;
    }
    .nav-links a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
    }
    .nav-links a.active, .nav-links a:hover {
      color: #fff;
    }

    /* Buttons */
    .btn-main {
      background-color: var(--primary-color);
      color: #fff !important;
      padding: 0.65rem 1.4rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(229, 9, 20, 0.35);
      transition: var(--transition);
    }
    .btn-main:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--border-color);
      color: var(--text-main) !important;
      padding: 0.65rem 1.4rem;
      border-radius: var(--radius-sm);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      transition: var(--transition);
    }
    .btn-outline:hover {
      border-color: var(--text-main);
      background: rgba(255, 255, 255, 0.05);
    }

    /* Section Global */
    section {
      padding: 5rem 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-card);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-header {
      margin-bottom: 3rem;
    }
    .section-badge {
      color: var(--primary-color);
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      margin-bottom: 0.5rem;
      display: inline-block;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 700;
      color: #fff;
      line-height: 1.3;
      margin-bottom: 1rem;
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 1.05rem;
      max-width: 720px;
    }

    /* Hero */
    .hero-section {
      padding: 7rem 0 5rem;
      background: linear-gradient(180deg, rgba(14, 16, 21, 0.6) 0%, rgba(14, 16, 21, 0.95) 100%), url('/assets/images/363d5293885c7f58.webp') center/cover no-repeat;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-h1 {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 1.2rem;
      letter-spacing: -0.5px;
    }
    .hero-p {
      font-size: 1.15rem;
      color: #cfd4e2;
      margin-bottom: 2.2rem;
      max-width: 760px;
      line-height: 1.7;
    }
    .hero-stats-bar {
      display: flex;
      gap: 2.5rem;
      margin-top: 3.5rem;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 2rem;
    }
    .hero-stat-item h4 {
      font-size: 1.8rem;
      font-weight: 800;
      color: #fff;
      margin-bottom: 0.2rem;
    }
    .hero-stat-item p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin: 0;
    }

    /* Card System */
    .matrix-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.8rem;
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .matrix-card:hover {
      border-color: rgba(229, 9, 20, 0.4);
      transform: translateY(-4px);
      box-shadow: var(--shadow-sm);
    }
    .matrix-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 0.8rem;
      color: #fff;
    }
    .matrix-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 1.2rem;
    }

    /* Comparison Table */
    .compare-container {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      margin: 0;
      color: var(--text-main);
    }
    .compare-table th, .compare-table td {
      padding: 1.2rem 1.5rem;
      border-bottom: 1px solid var(--border-color);
      text-align: left;
    }
    .compare-table th {
      background: var(--bg-alt);
      font-weight: 600;
      color: var(--text-muted);
    }
    .highlight-col {
      background: rgba(229, 9, 20, 0.04);
      border-left: 2px solid var(--primary-color) !important;
      border-right: 2px solid var(--primary-color) !important;
      font-weight: 600;
      color: #fff;
    }
    .badge-pill {
      background: rgba(0, 210, 190, 0.15);
      color: var(--accent-color);
      font-size: 0.75rem;
      padding: 3px 8px;
      border-radius: 20px;
      font-weight: 600;
    }

    /* News & Hot List Layout */
    .stream-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      margin-bottom: 1.5rem;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .stream-card:hover {
      border-color: rgba(255, 255, 255, 0.2);
    }
    .stream-card-body {
      padding: 1.4rem;
    }
    .stream-card-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 0.6rem;
      color: #fff;
    }
    .stream-card-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.55;
    }
    .rank-item {
      display: flex;
      gap: 1rem;
      align-items: center;
      padding: 0.9rem 0;
      border-bottom: 1px solid var(--border-color);
    }
    .rank-num {
      font-size: 1.4rem;
      font-weight: 800;
      width: 28px;
      color: var(--text-muted);
    }
    .rank-num.top3 {
      color: var(--primary-color);
    }
    .rank-content h5 {
      font-size: 0.95rem;
      font-weight: 600;
      margin: 0;
      color: #fff;
    }
    .rank-content span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* Topic Bar */
    .topic-strip {
      background: linear-gradient(90deg, #1f2433 0%, #161922 100%);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem;
    }

    /* Tier Pricing / Select */
    .tier-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2.2rem 1.8rem;
      text-align: center;
      position: relative;
    }
    .tier-card.featured {
      border-color: var(--primary-color);
      box-shadow: 0 0 24px rgba(229, 9, 20, 0.25);
    }
    .featured-badge {
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary-color);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 12px;
      border-radius: 12px;
    }
    .tier-price {
      font-size: 2.5rem;
      font-weight: 800;
      color: #fff;
      margin: 1rem 0;
    }
    .tier-features {
      list-style: none;
      margin: 1.5rem 0 2rem;
      text-align: left;
    }
    .tier-features li {
      font-size: 0.88rem;
      color: var(--text-muted);
      padding: 0.45rem 0;
      border-bottom: 1px dashed rgba(255, 255, 255, 0.08);
    }

    /* Timeline */
    .timeline-item {
      position: relative;
      padding-left: 2rem;
      border-left: 2px solid var(--border-color);
      margin-bottom: 2rem;
    }
    .timeline-item::before {
      content: "";
      position: absolute;
      left: -6px;
      top: 4px;
      width: 10px;
      height: 10px;
      background: var(--primary-color);
      border-radius: 50%;
    }
    .timeline-item h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 0.4rem;
    }
    .timeline-item p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* Partner Logos */
    .partner-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
      gap: 1.2rem;
    }
    .partner-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 1.2rem;
      text-align: center;
      color: var(--text-muted);
      font-size: 0.88rem;
      font-weight: 600;
    }

    /* Form Container */
    .form-box {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2.5rem;
    }
    .form-control {
      background: #0e1015;
      border: 1px solid var(--border-color);
      color: #fff;
      padding: 0.75rem 1rem;
      border-radius: var(--radius-sm);
      width: 100%;
      margin-bottom: 1.2rem;
      font-size: 0.95rem;
    }
    .form-control:focus {
      outline: none;
      border-color: var(--primary-color);
    }

    /* Footer */
    .site-footer {
      background: #090a0d;
      border-top: 1px solid var(--border-color);
      padding: 4rem 0 2rem;
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    .footer-col h5 {
      color: #fff;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 1.2rem;
    }
    .footer-links {
      list-style: none;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 0.6rem;
    }
    .footer-links a {
      color: var(--text-muted);
    }
    .footer-links a:hover {
      color: #fff;
    }
    .copyright-bar {
      margin-top: 3rem;
      padding-top: 1.5rem;
      border-top: 1px solid var(--border-color);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
    }

    /* Responsive */
    @media screen and (max-width: 768px) {
      .hero-h1 { font-size: 2rem; }
      .section-title { font-size: 1.6rem; }
      .hero-stats-bar { flex-direction: column; gap: 1.2rem; }
      .nav-links { display: none; }
      .compare-container { overflow-x: auto; }
      .site-footer { text-align: left; }
    }