/* roulang page: index */
:root {
      --lm-bg-dark: #07090e;
      --lm-bg-card: #0f1422;
      --lm-bg-card-hover: #161c2e;
      --lm-neon-cyan: #00f3ff;
      --lm-neon-magenta: #e024c3;
      --lm-neon-blue: #3a7bd5;
      --lm-text-main: #f0f4fc;
      --lm-text-muted: #95a3bf;
      --lm-border: rgba(0, 243, 255, 0.16);
      --lm-border-hover: rgba(0, 243, 255, 0.45);
      --lm-glow-shadow: 0 0 25px rgba(0, 243, 255, 0.22);
      --lm-glow-magenta: 0 0 25px rgba(224, 36, 195, 0.22);
      --lm-radius: 12px;
    }

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

    body {
      background-color: var(--lm-bg-dark);
      color: var(--lm-text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.68;
      overflow-x: hidden;
      padding-bottom: 74px; /* Space for sticky bar */
    }

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

    /* 暗色霓虹导航 */
    .lm-header {
      background: rgba(7, 9, 14, 0.94);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--lm-border);
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
    }
    .lm-nav-wrap {
      max-width: 1240px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 1rem 1.25rem;
    }
    .lm-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.55rem;
      font-weight: 800;
      letter-spacing: 0.5px;
      color: #fff;
    }
    .lm-brand-icon {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--lm-neon-cyan), var(--lm-neon-magenta));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.2rem;
      box-shadow: 0 0 12px var(--lm-neon-cyan);
    }
    .lm-nav-list {
      display: flex;
      align-items: center;
      list-style: none;
      margin: 0;
      gap: 2rem;
    }
    .lm-nav-item a {
      color: var(--lm-text-muted);
      font-weight: 500;
      font-size: 0.98rem;
      position: relative;
      padding: 6px 2px;
    }
    .lm-nav-item.active a,
    .lm-nav-item a:hover {
      color: var(--lm-neon-cyan);
      text-shadow: 0 0 8px rgba(0, 243, 255, 0.6);
    }
    .lm-nav-item.active a::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--lm-neon-cyan);
      box-shadow: 0 0 8px var(--lm-neon-cyan);
      border-radius: 2px;
    }
    .lm-nav-cta {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    /* 按钮通用 */
    .lm-btn-neon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: linear-gradient(135deg, #00f3ff, #0084ff);
      color: #07090e !important;
      font-weight: 700;
      padding: 0.72rem 1.6rem;
      border-radius: 8px;
      box-shadow: 0 0 16px rgba(0, 243, 255, 0.4);
      border: none;
      cursor: pointer;
      font-size: 0.95rem;
      transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    }
    .lm-btn-neon:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 24px rgba(0, 243, 255, 0.75);
    }
    .lm-btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: transparent;
      color: var(--lm-neon-cyan) !important;
      border: 1px solid var(--lm-border-hover);
      padding: 0.7rem 1.4rem;
      border-radius: 8px;
      font-weight: 600;
      font-size: 0.95rem;
    }
    .lm-btn-outline:hover {
      background: rgba(0, 243, 255, 0.08);
      box-shadow: 0 0 15px rgba(0, 243, 255, 0.25);
    }

    /* 区块通用结构 */
    .lm-container {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 1.25rem;
    }
    .lm-section {
      padding: 4.8rem 0;
      position: relative;
    }
    .lm-section-alt {
      background: #0b0f1a;
      border-top: 1px solid rgba(255, 255, 255, 0.04);
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .lm-sec-title-wrap {
      margin-bottom: 3.2rem;
    }
    .lm-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 0.3rem 0.9rem;
      border-radius: 30px;
      font-size: 0.82rem;
      font-weight: 600;
      letter-spacing: 0.5px;
      text-transform: uppercase;
      background: rgba(0, 243, 255, 0.1);
      border: 1px solid var(--lm-border);
      color: var(--lm-neon-cyan);
      margin-bottom: 0.85rem;
    }
    .lm-sec-title {
      font-size: 2.15rem;
      font-weight: 700;
      color: #fff;
      line-height: 1.35;
      margin-bottom: 0.9rem;
    }
    .lm-sec-desc {
      font-size: 1.04rem;
      color: var(--lm-text-muted);
      max-width: 820px;
      line-height: 1.7;
    }

    /* 1. Hero 优惠券墙入口 + 主券面放大 */
    .lm-hero-sec {
      padding: 4rem 0 3.5rem;
      background: radial-gradient(circle at 50% 20%, rgba(0, 243, 255, 0.12), transparent 60%);
      border-bottom: 1px solid rgba(0, 243, 255, 0.1);
    }
    .lm-hero-main-card {
      background: linear-gradient(135deg, rgba(22, 28, 46, 0.88), rgba(15, 20, 34, 0.95));
      border: 1px solid rgba(0, 243, 255, 0.35);
      border-radius: 18px;
      padding: 3rem 2.5rem;
      box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), var(--lm-glow-shadow);
      position: relative;
      overflow: hidden;
      margin-bottom: 2rem;
    }
    .lm-coupon-ribbon {
      position: absolute;
      top: 18px;
      right: -32px;
      transform: rotate(45deg);
      background: var(--lm-neon-magenta);
      color: #fff;
      font-weight: 700;
      font-size: 0.8rem;
      padding: 4px 45px;
      box-shadow: 0 0 10px var(--lm-neon-magenta);
    }
    .lm-coupon-head {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 1.5rem;
      border-bottom: 1px dashed rgba(0, 243, 255, 0.25);
      padding-bottom: 1.8rem;
      margin-bottom: 1.8rem;
    }
    .lm-hero-h1 {
      font-size: 2.35rem;
      font-weight: 800;
      color: #ffffff;
      line-height: 1.3;
    }
    .lm-coupon-val {
      display: flex;
      align-items: baseline;
      gap: 6px;
      color: var(--lm-neon-cyan);
    }
    .lm-coupon-val .num {
      font-size: 3.5rem;
      font-weight: 900;
      line-height: 1;
      text-shadow: 0 0 18px rgba(0, 243, 255, 0.5);
    }
    .lm-coupon-val .unit {
      font-size: 1.25rem;
      font-weight: 700;
    }
    .lm-hero-lead {
      color: var(--lm-text-muted);
      font-size: 1.08rem;
      line-height: 1.8;
      margin-bottom: 2rem;
    }
    .lm-hero-action-row {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 1.2rem;
    }
    .lm-coupon-subgrid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 1.25rem;
    }
    .lm-sub-coupon {
      background: var(--lm-bg-card);
      border: 1px solid var(--lm-border);
      border-radius: 12px;
      padding: 1.4rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: all 0.25s ease;
    }
    .lm-sub-coupon:hover {
      border-color: var(--lm-neon-cyan);
      transform: translateY(-2px);
    }

    /* 2. KPI 看板 */
    .lm-kpi-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 1.5rem;
    }
    .lm-kpi-card {
      background: var(--lm-bg-card);
      border: 1px solid var(--lm-border);
      border-radius: var(--lm-radius);
      padding: 2rem 1.5rem;
      text-align: center;
      position: relative;
    }
    .lm-kpi-val {
      font-size: 2.8rem;
      font-weight: 800;
      color: #fff;
      margin-bottom: 0.4rem;
      font-family: monospace, sans-serif;
    }
    .lm-kpi-val span {
      color: var(--lm-neon-cyan);
    }
    .lm-kpi-label {
      color: var(--lm-text-main);
      font-weight: 600;
      font-size: 1.05rem;
      margin-bottom: 0.4rem;
    }
    .lm-kpi-sub {
      color: var(--lm-text-muted);
      font-size: 0.88rem;
      line-height: 1.5;
    }

    /* 3. 服务矩阵 */
    .lm-matrix-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 1.75rem;
    }
    .lm-matrix-card {
      background: var(--lm-bg-card);
      border: 1px solid var(--lm-border);
      border-radius: var(--lm-radius);
      padding: 2.2rem 1.8rem;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .lm-matrix-card:hover {
      border-color: var(--lm-neon-cyan);
      box-shadow: var(--lm-glow-shadow);
      transform: translateY(-3px);
    }
    .lm-matrix-icon {
      font-size: 2rem;
      color: var(--lm-neon-cyan);
      margin-bottom: 1.25rem;
    }
    .lm-matrix-card h3 {
      font-size: 1.35rem;
      color: #fff;
      font-weight: 700;
      margin-bottom: 0.85rem;
    }
    .lm-matrix-card p {
      color: var(--lm-text-muted);
      font-size: 0.94rem;
      flex-grow: 1;
      margin-bottom: 1.2rem;
    }
    .lm-tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }
    .lm-tag {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      color: #c7d2e6;
      font-size: 0.78rem;
      padding: 2px 8px;
      border-radius: 4px;
    }

    /* 4. 场景应用矩阵 */
    .lm-scene-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 1.5rem;
    }
    .lm-scene-card {
      background: linear-gradient(180deg, #111728 0%, #0d121f 100%);
      border: 1px solid rgba(255, 255, 255, 0.07);
      border-radius: var(--lm-radius);
      padding: 1.8rem;
      border-top: 3px solid var(--lm-neon-cyan);
    }
    .lm-scene-card h4 {
      font-size: 1.2rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 0.6rem;
    }
    .lm-scene-card p {
      font-size: 0.92rem;
      color: var(--lm-text-muted);
      margin-bottom: 0.8rem;
    }

    /* 5. 结果对比 */
    .lm-compare-box {
      background: var(--lm-bg-card);
      border: 1px solid var(--lm-border);
      border-radius: 16px;
      overflow: hidden;
    }
    .lm-compare-head {
      display: grid;
      grid-template-columns: 2fr 1.5fr 1.5fr;
      padding: 1.2rem 1.8rem;
      background: rgba(255, 255, 255, 0.02);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      font-weight: 700;
      color: #fff;
    }
    .lm-compare-row {
      display: grid;
      grid-template-columns: 2fr 1.5fr 1.5fr;
      padding: 1.25rem 1.8rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
      align-items: center;
    }
    .lm-compare-row:last-child {
      border-bottom: none;
    }
    .lm-compare-highlight {
      color: var(--lm-neon-cyan);
      font-weight: 600;
    }
    .lm-compare-mute {
      color: var(--lm-text-muted);
    }

    /* 6. 套餐价格档位 */
    .lm-price-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 1.75rem;
      align-items: stretch;
    }
    .lm-price-card {
      background: var(--lm-bg-card);
      border: 1px solid var(--lm-border);
      border-radius: var(--lm-radius);
      padding: 2.5rem 1.8rem;
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .lm-price-card.featured {
      border: 2px solid var(--lm-neon-cyan);
      box-shadow: var(--lm-glow-shadow);
      background: linear-gradient(180deg, #131a30 0%, #0d121f 100%);
    }
    .lm-price-badge {
      position: absolute;
      top: -12px;
      right: 20px;
      background: var(--lm-neon-cyan);
      color: #07090e;
      font-weight: 700;
      font-size: 0.75rem;
      padding: 3px 10px;
      border-radius: 4px;
    }
    .lm-price-num {
      font-size: 2.4rem;
      font-weight: 800;
      color: #fff;
      margin: 1rem 0;
    }
    .lm-price-num small {
      font-size: 0.95rem;
      color: var(--lm-text-muted);
      font-weight: 400;
    }
    .lm-price-items {
      list-style: none;
      margin: 0 0 2rem 0;
      flex-grow: 1;
    }
    .lm-price-items li {
      padding: 0.5rem 0;
      color: var(--lm-text-muted);
      font-size: 0.92rem;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .lm-price-items li i {
      color: var(--lm-neon-cyan);
    }

    /* 7. 里程碑 / 时间线 */
    .lm-milestone-wrap {
      position: relative;
      border-left: 2px dashed rgba(0, 243, 255, 0.35);
      margin-left: 1.5rem;
      padding-left: 2.2rem;
    }
    .lm-milestone-item {
      position: relative;
      margin-bottom: 2.6rem;
    }
    .lm-milestone-item:last-child {
      margin-bottom: 0;
    }
    .lm-milestone-dot {
      position: absolute;
      left: calc(-2.2rem - 9px);
      top: 4px;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: #07090e;
      border: 3px solid var(--lm-neon-cyan);
      box-shadow: 0 0 10px var(--lm-neon-cyan);
    }
    .lm-milestone-stage {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--lm-neon-cyan);
      margin-bottom: 0.3rem;
    }
    .lm-milestone-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 0.5rem;
    }
    .lm-milestone-desc {
      color: var(--lm-text-muted);
      font-size: 0.95rem;
      line-height: 1.7;
    }

    /* 8. 评价墙与用户口碑 */
    .lm-review-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 1.5rem;
    }
    .lm-review-card {
      background: var(--lm-bg-card);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--lm-radius);
      padding: 1.8rem;
      position: relative;
    }
    .lm-review-score {
      color: #ffb800;
      margin-bottom: 0.85rem;
      font-size: 0.95rem;
    }
    .lm-review-text {
      color: #e2e8f5;
      font-size: 0.95rem;
      line-height: 1.7;
      margin-bottom: 1.2rem;
    }
    .lm-review-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .lm-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, #1e293b, #334155);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--lm-neon-cyan);
      font-weight: 700;
      border: 1px solid var(--lm-border);
    }
    .lm-author-info h5 {
      font-size: 0.95rem;
      color: #fff;
      margin: 0;
      font-weight: 600;
    }
    .lm-author-info p {
      font-size: 0.82rem;
      color: var(--lm-text-muted);
      margin: 0;
    }

    /* 9. 视听资讯与行业洞察 */
    .lm-news-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 1.75rem;
    }
    .lm-news-card {
      background: var(--lm-bg-card);
      border: 1px solid var(--lm-border);
      border-radius: var(--lm-radius);
      padding: 1.8rem;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.25s ease;
    }
    .lm-news-card:hover {
      border-color: var(--lm-neon-cyan);
      transform: translateY(-2px);
    }
    .lm-news-meta {
      font-size: 0.8rem;
      color: var(--lm-neon-cyan);
      margin-bottom: 0.6rem;
    }
    .lm-news-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 0.8rem;
      line-height: 1.45;
    }
    .lm-news-card p {
      color: var(--lm-text-muted);
      font-size: 0.92rem;
      line-height: 1.65;
      margin-bottom: 1.2rem;
    }

    /* 10. 平台保障体系 */
    .lm-safe-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 1.5rem;
    }
    .lm-safe-card {
      background: linear-gradient(135deg, rgba(22, 28, 46, 0.7), rgba(15, 20, 34, 0.85));
      border: 1px solid var(--lm-border);
      border-radius: var(--lm-radius);
      padding: 1.8rem;
      text-align: left;
    }
    .lm-safe-card i {
      font-size: 1.8rem;
      color: var(--lm-neon-cyan);
      margin-bottom: 1rem;
      display: inline-block;
    }
    .lm-safe-card h4 {
      font-size: 1.15rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 0.6rem;
    }
    .lm-safe-card p {
      font-size: 0.9rem;
      color: var(--lm-text-muted);
    }

    /* 11. 版本升级日志 */
    .lm-log-wrap {
      background: var(--lm-bg-card);
      border: 1px solid var(--lm-border);
      border-radius: var(--lm-radius);
      padding: 2.2rem;
    }
    .lm-log-item {
      display: flex;
      flex-wrap: wrap;
      align-items: baseline;
      gap: 1.5rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      padding-bottom: 1.4rem;
      margin-bottom: 1.4rem;
    }
    .lm-log-item:last-child {
      border-bottom: none;
      padding-bottom: 0;
      margin-bottom: 0;
    }
    .lm-log-ver {
      font-family: monospace;
      font-weight: 700;
      color: var(--lm-neon-cyan);
      font-size: 1.1rem;
      min-width: 90px;
    }
    .lm-log-content h5 {
      font-size: 1.05rem;
      color: #fff;
      font-weight: 600;
      margin-bottom: 0.4rem;
    }
    .lm-log-content p {
      color: var(--lm-text-muted);
      font-size: 0.92rem;
      margin: 0;
    }

    /* 12. 快速解答 FAQ */
    .lm-faq-grid {
      display: grid: repeat(auto-fit, minmax(320px, 1fr));
      gap: 1.5rem;
    }
    .lm-faq-card {
      background: var(--lm-bg-card);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--lm-radius);
      padding: 1.8rem;
    }
    .lm-faq-card h4 {
      font-size: 1.12rem;
      color: #fff;
      font-weight: 700;
      margin-bottom: 0.8rem;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .lm-faq-card h4 i {
      color: var(--lm-neon-cyan);
      font-size: 0.95rem;
    }
    .lm-faq-card p {
      color: var(--lm-text-muted);
      font-size: 0.92rem;
      line-height: 1.75;
      margin: 0;
    }

    /* 底部固定转化栏 */
    .lm-sticky-cta {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(11, 15, 26, 0.95);
      border-top: 1px solid var(--lm-border);
      backdrop-filter: blur(12px);
      z-index: 999;
      padding: 0.9rem 0;
      box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.5);
    }
    .lm-sticky-inner {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 1.25rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
    }
    .lm-sticky-info {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .lm-sticky-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: #fff;
    }
    .lm-sticky-desc {
      font-size: 0.88rem;
      color: var(--lm-text-muted);
    }

    /* 页脚 */
    .lm-footer {
      background: #05070a;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 4rem 0 2rem;
      color: var(--lm-text-muted);
    }
    .lm-footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 2.5rem;
      margin-bottom: 3rem;
    }
    .lm-footer-about h4 {
      color: #fff;
      font-size: 1.25rem;
      margin-bottom: 1rem;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .lm-footer-about p {
      font-size: 0.9rem;
      line-height: 1.8;
      max-width: 360px;
    }
    .lm-footer-col h5 {
      color: #fff;
      font-size: 1rem;
      margin-bottom: 1.1rem;
      font-weight: 600;
    }
    .lm-footer-links {
      list-style: none;
      margin: 0;
    }
    .lm-footer-links li {
      margin-bottom: 0.6rem;
    }
    .lm-footer-links a {
      color: var(--lm-text-muted);
      font-size: 0.9rem;
    }
    .lm-footer-links a:hover {
      color: var(--lm-neon-cyan);
    }
    .lm-footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 1.8rem;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
      gap: 1rem;
    }

    @media (max-width: 900px) {
      .lm-compare-head, .lm-compare-row {
        grid-template-columns: 1.5fr 1fr 1fr;
        padding: 1rem;
        font-size: 0.9rem;
      }
      .lm-footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 640px) {
      .lm-hero-h1 {
        font-size: 1.85rem;
      }
      .lm-sec-title {
        font-size: 1.65rem;
      }
      .lm-sticky-desc {
        display: none;
      }
      .lm-footer-grid {
        grid-template-columns: 1fr;
      }
      .lm-compare-head, .lm-compare-row {
        grid-template-columns: 1fr;
        gap: 0.4rem;
      }
    }