/* roulang page: index */
:root {
      --primary: #FF6B35;
      --primary-hover: #ff8555;
      --primary-glow: rgba(255, 107, 53, 0.35);
      --bg-deep: #0A192F;
      --bg-dark: #0F0F0F;
      --bg-card: #16181D;
      --bg-card-glass: rgba(26, 26, 26, 0.75);
      --border-color: rgba(255, 255, 255, 0.08);
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --radius-lg: 24px;
      --radius-md: 16px;
      --radius-sm: 8px;
      --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.3);
      --container-max: 1200px;
    }

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

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

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

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

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

    /* 胶囊徽章 */
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 14px;
      border-radius: 20px;
      background-color: rgba(255, 107, 53, 0.12);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      border: 1px solid rgba(255, 107, 53, 0.25);
    }
    .badge-dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background-color: var(--primary);
      animation: pulse 1.8s infinite;
    }
    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.8); }
    }

    /* 按钮 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 28px;
      border-radius: 30px;
      font-weight: 600;
      font-size: 15px;
      cursor: pointer;
      transition: all 0.3s ease;
      border: none;
      text-align: center;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--bg-deep) 0%, var(--primary) 100%);
      color: #fff;
      box-shadow: 0 6px 20px var(--primary-glow);
    }
    .btn-primary:hover {
      box-shadow: 0 8px 25px rgba(255, 107, 53, 0.5);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: rgba(255, 255, 255, 0.05);
      color: var(--text-main);
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.12);
      border-color: rgba(255, 255, 255, 0.3);
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(15, 15, 15, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-color);
      height: 72px;
      display: flex;
      align-items: center;
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: #FFF;
      letter-spacing: -0.5px;
    }
    .brand-icon {
      width: 34px;
      height: 34px;
      background: linear-gradient(135deg, var(--bg-deep), var(--primary));
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 900;
      font-size: 16px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 28px;
    }
    .nav-link {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 500;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    /* 通用卡片与版块 */
    .section-block {
      padding: 90px 0;
      position: relative;
    }
    .section-block.alt-bg {
      background: #121317;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }
    .section-title {
      font-size: 36px;
      font-weight: 700;
      margin: 12px 0 16px;
      line-height: 1.3;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .glass-card {
      background: var(--bg-card-glass);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-card);
      transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    }
    .glass-card:hover {
      transform: translateY(-4px);
      border-color: rgba(255, 107, 53, 0.3);
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.45);
    }

    /* 板块1：Hero 竖屏感视觉 */
    .hero-section {
      padding: 70px 0 90px 0;
      background: radial-gradient(circle at 80% 20%, rgba(255, 107, 53, 0.08) 0%, rgba(10, 25, 47, 0.25) 50%, transparent 80%);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 50px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 46px;
      line-height: 1.25;
      font-weight: 800;
      margin: 18px 0 20px;
      background: linear-gradient(180deg, #FFFFFF 30%, #CBD5E1 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 16px;
      line-height: 1.8;
      color: var(--text-muted);
      margin-bottom: 32px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }
    .hero-stat-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      padding-top: 24px;
      border-top: 1px solid var(--border-color);
    }
    .hero-stat-item h4 {
      font-size: 24px;
      color: var(--primary);
      font-weight: 700;
    }
    .hero-stat-item p {
      font-size: 13px;
      color: var(--text-muted);
    }
    
    /* 竖屏感主视觉面板 */
    .vertical-phone-stage {
      background: #000;
      border-radius: 36px;
      padding: 16px;
      border: 4px solid #2A2E39;
      box-shadow: 0 25px 60px rgba(0,0,0,0.6);
      max-width: 380px;
      margin: 0 auto;
      position: relative;
    }
    .phone-screen {
      background: #11141A;
      border-radius: 24px;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.05);
    }
    .phone-header-bar {
      padding: 14px 18px;
      background: rgba(255, 255, 255, 0.02);
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid var(--border-color);
    }
    .phone-body {
      padding: 16px;
    }
    .live-match-mini {
      background: rgba(255, 255, 255, 0.03);
      border-radius: var(--radius-md);
      padding: 14px;
      margin-bottom: 12px;
      border: 1px solid var(--border-color);
    }
    .match-teams {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-top: 8px;
    }
    .team-name {
      font-weight: 600;
      font-size: 14px;
    }
    .match-score {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary);
      padding: 2px 10px;
      background: rgba(255, 107, 53, 0.1);
      border-radius: 8px;
    }

    /* 板块2：入口矩阵 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .matrix-card {
      padding: 24px;
      text-align: center;
      cursor: pointer;
    }
    .matrix-icon-wrap {
      width: 54px;
      height: 54px;
      margin: 0 auto 16px;
      border-radius: 16px;
      background: rgba(255, 107, 53, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 22px;
      font-weight: bold;
    }
    .matrix-title {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 8px;
    }
    .matrix-text {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 板块3：最新动态 */
    .feed-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .feed-card {
      display: flex;
      gap: 20px;
      padding: 20px;
      align-items: center;
    }
    .feed-img-box {
      width: 140px;
      height: 100px;
      flex-shrink: 0;
      border-radius: 12px;
      overflow: hidden;
    }
    .feed-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .feed-content h3 {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 6px;
      line-height: 1.4;
    }
    .feed-content p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 板块4：卖点三连 (USP) */
    .usp-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .usp-card {
      padding: 32px 26px;
      border-top: 3px solid var(--primary);
    }
    .usp-title {
      font-size: 20px;
      font-weight: 700;
      margin: 14px 0 10px;
    }
    .usp-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块5：场景演示区 */
    .scenario-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .scenario-img-wrap {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-card);
    }
    .scenario-info h3 {
      font-size: 28px;
      font-weight: 700;
      margin: 12px 0 16px;
    }
    .scenario-info p {
      color: var(--text-muted);
      font-size: 15px;
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .feature-point-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .feature-point-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 14px;
      color: #E2E8F0;
    }
    .check-icon {
      color: var(--primary);
      font-weight: bold;
    }

    /* 板块6：核心优势 (3x2 栅格) */
    .adv-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .adv-card {
      padding: 28px;
    }
    .adv-card h3 {
      font-size: 18px;
      font-weight: 600;
      margin: 10px 0;
    }
    .adv-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块7：赛事覆盖展示 */
    .coverage-scroll-wrap {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .coverage-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 20px;
      border: 1px solid var(--border-color);
      text-align: center;
    }
    .coverage-card h4 {
      font-size: 18px;
      margin: 12px 0 6px;
    }
    .coverage-card p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 板块8：精选分类与赛事大厅入口 */
    .category-tabs {
      display: flex;
      justify-content: center;
      gap: 12px;
      margin-bottom: 30px;
      flex-wrap: wrap;
    }
    .cat-tab {
      padding: 8px 20px;
      border-radius: 20px;
      background: rgba(255,255,255,0.05);
      border: 1px solid var(--border-color);
      font-size: 14px;
      cursor: pointer;
    }
    .cat-tab.active {
      background: var(--primary);
      border-color: var(--primary);
      color: #fff;
    }
    .cat-item-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .cat-match-card {
      padding: 22px;
    }
    .cat-match-header {
      display: flex;
      justify-content: space-between;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 12px;
    }
    .cat-match-body {
      text-align: center;
      padding: 10px 0;
    }
    .cat-match-body .teams {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    /* 板块9：技术性能证据 */
    .tech-metric-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: center;
    }
    .tech-metric-card {
      padding: 28px 20px;
    }
    .metric-val {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary);
      margin: 8px 0;
    }
    .metric-lbl {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 板块10：社会认同区 */
    .social-banner {
      background: linear-gradient(135deg, rgba(10,25,47,0.7) 0%, rgba(22,24,29,0.9) 100%);
      border: 1px solid rgba(255,107,53,0.2);
      border-radius: var(--radius-lg);
      padding: 40px;
      text-align: center;
    }
    .user-avatar-stack {
      display: flex;
      justify-content: center;
      align-items: center;
      margin-bottom: 20px;
    }
    .avatar-circle {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      border: 2px solid var(--bg-dark);
      background: #334155;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 12px;
      font-weight: bold;
      margin-left: -10px;
    }
    .avatar-circle:first-child { margin-left: 0; }

    /* 板块11：对比差异区 */
    .compare-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .compare-card {
      padding: 32px;
      border-radius: var(--radius-lg);
    }
    .compare-card.bad {
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid rgba(255, 255, 255, 0.06);
    }
    .compare-card.good {
      background: rgba(255, 107, 53, 0.04);
      border: 1px solid rgba(255, 107, 53, 0.3);
    }
    .compare-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-top: 20px;
    }
    .compare-list li {
      font-size: 14px;
      line-height: 1.5;
    }

    /* 板块12：资讯证据与前瞻解读 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-img {
      height: 170px;
      overflow: hidden;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .news-card:hover .news-img img {
      transform: scale(1.05);
    }
    .news-body {
      padding: 22px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .news-title {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 10px;
      line-height: 1.5;
    }
    .news-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块13：版本更新历史 */
    .timeline-wrap {
      max-width: 800px;
      margin: 0 auto;
      border-left: 2px solid rgba(255, 255, 255, 0.1);
      padding-left: 30px;
    }
    .timeline-item {
      position: relative;
      margin-bottom: 36px;
    }
    .timeline-item:last-child {
      margin-bottom: 0;
    }
    .timeline-dot {
      position: absolute;
      left: -37px;
      top: 4px;
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 10px var(--primary);
    }
    .timeline-title {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .timeline-desc {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 板块14：异议拆解/FAQ (手风琴) */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
    }
    .faq-question {
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-icon {
      font-size: 20px;
      color: var(--primary);
      transition: transform 0.3s ease;
    }
    .faq-answer {
      padding: 0 24px 20px 24px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      display: none;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* 板块15：安全保障与权威认证条 */
    .trust-bar {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .trust-item {
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 20px;
    }
    .trust-icon {
      font-size: 32px;
    }
    .trust-text h4 {
      font-size: 15px;
      font-weight: 600;
    }
    .trust-text p {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 移动端固定CTA吸底条 */
    .mobile-floating-cta {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: rgba(15, 15, 15, 0.95);
      backdrop-filter: blur(10px);
      padding: 12px 20px;
      border-top: 1px solid var(--border-color);
      z-index: 999;
      justify-content: space-between;
      align-items: center;
    }

    /* 页脚 */
    .site-footer {
      background: #090A0D;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 30px;
      font-size: 13px;
      color: #64748B;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand h3 {
      font-size: 18px;
      color: #F8FAFC;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .footer-col h4 {
      font-size: 14px;
      color: #CBD5E1;
      margin-bottom: 16px;
      font-weight: 600;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-col a:hover {
      color: var(--primary);
    }
    .footer-bottom {
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; text-align: center; }
      .hero-actions { justify-content: center; }
      .hero-stat-row { max-width: 500px; margin: 0 auto; }
      .vertical-phone-stage { margin-top: 20px; }
      .matrix-grid { grid-template-columns: repeat(2, 1fr); }
      .coverage-scroll-wrap { grid-template-columns: repeat(2, 1fr); }
      .tech-metric-bar { grid-template-columns: repeat(2, 1fr); }
      .adv-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .hero-h1 { font-size: 32px; }
      .section-title { font-size: 26px; }
      .section-block { padding: 60px 0; }
      .nav-menu { display: none; }
      .feed-grid, .usp-grid, .scenario-grid, .cat-item-grid, .news-grid, .compare-container, .trust-bar {
        grid-template-columns: 1fr;
      }
      .adv-grid { grid-template-columns: 1fr; }
      .matrix-grid { grid-template-columns: 1fr; }
      .coverage-scroll-wrap { grid-template-columns: 1fr; }
      .mobile-floating-cta { display: flex; }
      body { padding-bottom: 70px; }
      .footer-grid { grid-template-columns: 1fr; gap: 30px; }
      .footer-bottom { flex-direction: column; text-align: center; }
    }