/* roulang page: index */
:root {
      --bg-deep: #071526;
      --bg-surface: #0a2540;
      --bg-surface-elevated: #113459;
      --bg-surface-card: #0d2e4f;
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
      --text-dim: #64748b;
      --brand-cyan: #00f2fe;
      --brand-purple: #7000ff;
      --brand-green: #10b981;
      --brand-gradient: linear-gradient(135deg, #00f2fe 0%, #7000ff 100%);
      --accent-glow: rgba(0, 242, 254, 0.25);
      --card-radius: 20px;
      --transition-standard: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      --border-subtle: rgba(255, 255, 255, 0.08);
      --container-width: 1240px;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-deep);
      color: var(--text-main);
    }

    body {
      line-height: 1.6;
      overflow-x: hidden;
      background-image: radial-gradient(circle at 15% 10%, rgba(112, 0, 255, 0.12) 0%, transparent 40%),
                        radial-gradient(circle at 85% 60%, rgba(0, 242, 254, 0.08) 0%, transparent 45%);
      background-attachment: fixed;
    }

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

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

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(10, 37, 64, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-subtle);
      transition: var(--transition-standard);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 22px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: #fff;
    }

    .brand-logo-icon {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      background: var(--brand-gradient);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      box-shadow: 0 0 16px var(--accent-glow);
    }

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

    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
      padding: 8px 0;
    }

    .nav-link:hover, .nav-link.active {
      color: var(--brand-cyan);
    }

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--brand-cyan);
      transition: var(--transition-standard);
    }

    .nav-link:hover::after, .nav-link.active::after {
      width: 100%;
    }

    .nav-action .btn-nav {
      padding: 10px 22px;
      border-radius: 99px;
      font-size: 14px;
      font-weight: 600;
      background: var(--brand-gradient);
      color: #071526;
      box-shadow: 0 4px 14px var(--accent-glow);
      display: inline-block;
    }

    .nav-action .btn-nav:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px var(--accent-glow);
    }

    /* 基础通用组件 */
    .section-spacing {
      padding: 96px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
      position: relative;
    }

    .section-title-wrap {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 56px;
    }

    .badge-sub {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      border-radius: 99px;
      background: rgba(0, 242, 254, 0.08);
      border: 1px solid rgba(0, 242, 254, 0.3);
      color: var(--brand-cyan);
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 18px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .section-h2 {
      font-size: 36px;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 14px 32px;
      border-radius: 99px;
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      border: none;
      transition: var(--transition-standard);
    }

    .btn-primary {
      background: var(--brand-gradient);
      color: #071526;
      box-shadow: 0 4px 18px var(--accent-glow);
    }

    .btn-primary:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 8px 26px var(--accent-glow);
    }

    .btn-outline {
      background: rgba(255, 255, 255, 0.05);
      color: #fff;
      border: 1px solid var(--border-subtle);
    }

    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.12);
      border-color: rgba(255, 255, 255, 0.2);
    }

    /* 1. Hero 蓝图模块：短视频竖屏感主视觉 + 跟买/了解 CTA */
    .hero-section {
      padding: 80px 0 100px;
      position: relative;
      overflow: hidden;
      background: radial-gradient(circle at 50% 20%, rgba(10, 37, 64, 0.9) 0%, var(--bg-deep) 80%);
    }

    .hero-layout {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 56px;
      align-items: center;
    }

    .hero-content h1 {
      font-size: 52px;
      line-height: 1.15;
      font-weight: 900;
      margin-bottom: 24px;
      letter-spacing: -1px;
    }

    .hero-content h1 span {
      background: var(--brand-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-intro {
      font-size: 17px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 36px;
    }

    .hero-btn-group {
      display: flex;
      gap: 18px;
      margin-bottom: 42px;
      flex-wrap: wrap;
    }

    .hero-stats-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      border-top: 1px solid var(--border-subtle);
      padding-top: 28px;
    }

    .hero-stat-item h4 {
      font-size: 28px;
      font-weight: 800;
      color: var(--brand-cyan);
    }

    .hero-stat-item p {
      font-size: 13px;
      color: var(--text-dim);
    }

    /* 短视频竖屏感视效卡片 */
    .vertical-reel-card {
      position: relative;
      width: 100%;
      max-width: 380px;
      margin: 0 auto;
      aspect-ratio: 9/16;
      border-radius: 28px;
      overflow: hidden;
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(255, 255, 255, 0.1);
      background: #000;
    }

    .reel-media-bg {
      width: 100%;
      height: 100%;
      object-fit: cover;
      filter: brightness(0.85);
    }

    .reel-overlay-hud {
      position: absolute;
      inset: 0;
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      background: linear-gradient(180deg, rgba(0,0,0,0.4) 0%, transparent 30%, transparent 60%, rgba(7, 21, 38, 0.95) 100%);
      pointer-events: none;
    }

    .reel-hud-top {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .tag-live {
      background: rgba(239, 68, 68, 0.85);
      color: #fff;
      font-size: 11px;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 99px;
      display: flex;
      align-items: center;
      gap: 5px;
      animation: pulseLive 2s infinite;
    }

    @keyframes pulseLive {
      0%, 100% { opacity: 1; }
      50% { opacity: 0.5; }
    }

    .tag-res {
      background: rgba(0,0,0,0.5);
      border: 1px solid rgba(255,255,255,0.2);
      font-size: 11px;
      padding: 4px 8px;
      border-radius: 6px;
      color: var(--brand-cyan);
    }

    .reel-hud-bottom {
      pointer-events: auto;
    }

    .reel-pill-data {
      background: rgba(10, 37, 64, 0.85);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(0, 242, 254, 0.4);
      padding: 12px 16px;
      border-radius: 16px;
      margin-bottom: 14px;
    }

    .reel-pill-data h5 {
      font-size: 13px;
      color: var(--brand-cyan);
      margin-bottom: 4px;
      display: flex;
      justify-content: space-between;
    }

    .reel-pill-data p {
      font-size: 12px;
      color: #cbd5e1;
      line-height: 1.4;
    }

    .reel-action-btn {
      width: 100%;
      padding: 12px;
      background: var(--brand-gradient);
      color: #071526;
      font-size: 14px;
      font-weight: 700;
      text-align: center;
      border-radius: 12px;
      display: block;
      box-shadow: 0 4px 15px rgba(0, 242, 254, 0.3);
    }

    /* 2. 品类入口 */
    .category-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .category-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--card-radius);
      padding: 32px 24px;
      transition: var(--transition-standard);
      position: relative;
      overflow: hidden;
    }

    .category-card:hover {
      transform: translateY(-6px);
      border-color: rgba(0, 242, 254, 0.4);
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.35);
    }

    .category-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: rgba(0, 242, 254, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      margin-bottom: 20px;
      color: var(--brand-cyan);
    }

    .category-card h3 {
      font-size: 20px;
      margin-bottom: 12px;
      font-weight: 700;
    }

    .category-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 3. 附近推荐与场地部署 */
    .venue-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .venue-card {
      background: var(--bg-surface);
      border-radius: var(--card-radius);
      border: 1px solid var(--border-subtle);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition-standard);
    }

    .venue-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 20px 40px rgba(0,0,0,0.4);
      border-color: rgba(0, 242, 254, 0.3);
    }

    .venue-thumb {
      height: 200px;
      overflow: hidden;
      position: relative;
    }

    .venue-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .venue-card:hover .venue-thumb img {
      transform: scale(1.05);
    }

    .venue-badge-pill {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(7, 21, 38, 0.85);
      border: 1px solid rgba(255, 255, 255, 0.15);
      color: #fff;
      font-size: 12px;
      padding: 4px 10px;
      border-radius: 99px;
      backdrop-filter: blur(4px);
    }

    .venue-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .venue-body h3 {
      font-size: 19px;
      margin-bottom: 8px;
    }

    .venue-distance {
      font-size: 13px;
      color: var(--brand-cyan);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .venue-body p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 20px;
      flex: 1;
    }

    .venue-foot {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px solid var(--border-subtle);
      padding-top: 16px;
      font-size: 13px;
      color: var(--text-dim);
    }

    /* 4. 口碑榜 */
    .ranking-wrapper {
      background: var(--bg-surface);
      border-radius: 24px;
      border: 1px solid var(--border-subtle);
      padding: 36px;
    }

    .ranking-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .ranking-item {
      display: grid;
      grid-template-columns: 60px 2fr 1.2fr 1fr;
      align-items: center;
      padding: 18px 24px;
      border-radius: 16px;
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid transparent;
      transition: var(--transition-standard);
    }

    .ranking-item:hover {
      background: var(--bg-surface-elevated);
      border-color: rgba(0, 242, 254, 0.2);
    }

    .rank-number {
      font-size: 22px;
      font-weight: 800;
      color: var(--text-dim);
    }

    .ranking-item:nth-child(1) .rank-number { color: #f59e0b; }
    .ranking-item:nth-child(2) .rank-number { color: #cbd5e1; }
    .ranking-item:nth-child(3) .rank-number { color: #d97706; }

    .rank-info h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 4px;
    }

    .rank-info p {
      font-size: 13px;
      color: var(--text-muted);
    }

    .rank-metric {
      font-size: 14px;
      color: var(--brand-cyan);
      font-weight: 600;
    }

    .rank-badge {
      text-align: right;
    }

    .badge-score {
      background: rgba(16, 185, 129, 0.15);
      color: var(--brand-green);
      font-size: 13px;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 8px;
      display: inline-block;
    }

    /* 5. 保障承诺图标条 */
    .guarantee-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      background: var(--bg-surface-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--card-radius);
      padding: 40px 32px;
    }

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

    .guarantee-icon {
      font-size: 28px;
      color: var(--brand-cyan);
      line-height: 1;
    }

    .guarantee-box h4 {
      font-size: 17px;
      margin-bottom: 6px;
    }

    .guarantee-box p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 6. 到店与部署流程 */
    .step-flow {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }

    .step-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--card-radius);
      padding: 32px 24px;
      position: relative;
    }

    .step-order {
      font-size: 40px;
      font-weight: 900;
      color: rgba(255, 255, 255, 0.05);
      position: absolute;
      top: 16px;
      right: 20px;
      line-height: 1;
    }

    .step-card h3 {
      font-size: 18px;
      margin-bottom: 12px;
      color: #fff;
    }

    .step-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 7. 竞技分析与战术演示 (截图舞台) */
    .demo-stage {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: 24px;
      overflow: hidden;
      padding: 32px;
      box-shadow: 0 30px 60px rgba(0,0,0,0.5);
    }

    .stage-browser-bar {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 24px;
      padding-bottom: 16px;
      border-bottom: 1px solid var(--border-subtle);
    }

    .stage-dot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: rgba(255,255,255,0.2);
    }

    .stage-dot:nth-child(1) { background: #ef4444; }
    .stage-dot:nth-child(2) { background: #f59e0b; }
    .stage-dot:nth-child(3) { background: #10b981; }

    .stage-main-preview {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 32px;
      align-items: center;
    }

    .stage-img-wrap {
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .stage-img-wrap img {
      width: 100%;
      height: auto;
    }

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

    .stage-feature-item {
      padding: 16px 20px;
      border-radius: 14px;
      background: rgba(255, 255, 255, 0.03);
      border-left: 3px solid var(--brand-cyan);
    }

    .stage-feature-item h4 {
      font-size: 16px;
      margin-bottom: 6px;
      color: #fff;
    }

    .stage-feature-item p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 8. 解决方案矩阵 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .matrix-card {
      background: var(--bg-surface);
      border-radius: var(--card-radius);
      border: 1px solid var(--border-subtle);
      padding: 32px;
      transition: var(--transition-standard);
    }

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

    .matrix-card h3 {
      font-size: 20px;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .matrix-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 9. 资讯与行业洞察 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

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

    .news-card:hover {
      transform: translateY(-6px);
      border-color: rgba(0, 242, 254, 0.4);
    }

    .news-cover {
      height: 190px;
      overflow: hidden;
    }

    .news-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .news-card:hover .news-cover img {
      transform: scale(1.06);
    }

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

    .news-meta {
      font-size: 12px;
      color: var(--text-dim);
      margin-bottom: 10px;
      display: flex;
      gap: 12px;
    }

    .news-content h3 {
      font-size: 17px;
      margin-bottom: 10px;
      line-height: 1.4;
      font-weight: 700;
    }

    .news-content p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 16px;
      flex: 1;
    }

    .footer {
      background: #050d17;
      padding: 80px 0 40px;
      border-top: 1px solid var(--border-subtle);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 60px;
    }

    .footer-brand h2 {
      font-size: 24px;
      margin-bottom: 16px;
    }

    .footer-brand p {
      color: var(--text-muted);
      font-size: 14px;
      max-width: 320px;
    }

    .footer-links h4 {
      font-size: 16px;
      margin-bottom: 20px;
      color: #fff;
    }

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

    .footer-links li {
      margin-bottom: 12px;
    }

    .footer-links a {
      color: var(--text-muted);
      font-size: 14px;
    }

    .footer-links a:hover {
      color: var(--brand-cyan);
    }

    .footer-bottom {
      border-top: 1px solid var(--border-subtle);
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      color: var(--text-dim);
      font-size: 13px;
    }

    @media (max-width: 1024px) {
      .hero-layout { grid-template-columns: 1fr; text-align: center; }
      .hero-btn-group { justify-content: center; }
      .hero-stats-row { justify-content: center; }
      .category-grid, .venue-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
      .step-flow { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 768px) {
      .container { padding: 0 20px; }
      .category-grid, .venue-grid, .news-grid, .step-flow, .guarantee-bar { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .nav-menu { display: none; }
    }