/* roulang page: index */
:root {
      --bg-light: #F6F7F9;
      --bg-surface: #FFFFFF;
      --bg-dark: #0B0D13;
      --bg-dark-card: #141824;
      --text-main: #0F141C;
      --text-sub: #4E5969;
      --text-muted: #86909C;
      --text-on-dark: #F2F4F8;
      --text-muted-dark: #94A3B8;
      --color-pulse: #00E5A3;
      --color-pulse-text: #00B37E;
      --color-cta: #FF5500;
      --color-cta-hover: #E04800;
      --border-light: #E2E8F0;
      --border-dark: #222938;
      --font-mono: 'JetBrains Mono', 'DIN Alternate', 'Roboto Mono', monospace;
      --radius-sm: 6px;
      --radius-md: 8px;
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
      --transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.75;
      font-size: 16px;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a { color: inherit; text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--color-pulse-text); }
    img { max-width: 100%; height: auto; display: block; }
    .mono { font-family: var(--font-mono); }

    .site-container {
      max-width: 1320px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部双行导航 */
    .topbar-wrapper {
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    }
    .topbar-utility {
      background-color: var(--bg-dark);
      color: var(--text-muted-dark);
      height: 38px;
      line-height: 38px;
      font-size: 13px;
      border-bottom: 1px solid var(--border-dark);
    }
    .topbar-utility .utility-badge {
      display: inline-flex;
      align-items: center;
      background: rgba(0, 229, 163, 0.12);
      color: var(--color-pulse);
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      font-size: 12px;
      margin-right: 12px;
    }
    .topbar-utility .utility-badge::before {
      content: '';
      display: inline-block;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background-color: var(--color-pulse);
      margin-right: 6px;
    }
    .utility-links a {
      color: var(--text-muted-dark);
      margin-left: 18px;
      font-size: 13px;
    }
    .utility-links a:hover { color: #fff; }

    .main-nav {
      background-color: var(--bg-surface);
      height: 72px;
      border-bottom: 1px solid var(--border-light);
      display: flex;
      align-items: center;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .brand-logo svg { width: 32px; height: 32px; fill: var(--color-pulse-text); }
    .nav-menu {
      display: flex;
      list-style: none;
      margin: 0;
      padding: 0;
      gap: 28px;
    }
    .nav-menu a {
      font-weight: 600;
      font-size: 15px;
      color: var(--text-main);
      position: relative;
      padding: 6px 0;
    }
    .nav-menu a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--color-pulse-text);
      transition: var(--transition);
    }
    .nav-menu a:hover::after { width: 100%; }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 44px;
      padding: 0 22px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 700;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      white-space: nowrap;
    }
    .btn-ghost {
      background: transparent;
      border-color: var(--border-light);
      color: var(--text-main);
    }
    .btn-ghost:hover {
      border-color: var(--text-main);
      background: rgba(0,0,0,0.02);
    }
    .btn-primary {
      background-color: var(--color-cta);
      color: #fff;
    }
    .btn-primary:hover {
      background-color: var(--color-cta-hover);
      color: #fff;
      box-shadow: 0 6px 16px rgba(255, 85, 0, 0.28);
    }
    .btn-pulse {
      background-color: var(--color-pulse);
      color: #0B0D13;
    }
    .btn-pulse:hover {
      background-color: #00cca0;
      color: #0B0D13;
    }

    /* 板块通用规范 */
    .section-wrap {
      padding: 88px 0;
      position: relative;
    }
    .section-white { background-color: var(--bg-surface); }
    .section-gray { background-color: var(--bg-light); }
    .section-dark {
      background-color: var(--bg-dark);
      color: var(--text-on-dark);
    }
    .section-header {
      margin-bottom: 52px;
    }
    .section-header.text-center { text-align: center; }
    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      color: var(--color-pulse-text);
      margin-bottom: 8px;
    }
    .section-dark .section-tag { color: var(--color-pulse); }
    .section-title {
      font-size: clamp(1.75rem, 3vw, 2.35rem);
      font-weight: 800;
      line-height: 1.28;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .section-dark .section-title { color: var(--text-on-dark); }
    .section-desc {
      font-size: 16px;
      color: var(--text-sub);
      max-width: 760px;
      margin-top: 14px;
      line-height: 1.7;
    }
    .section-header.text-center .section-desc { margin-left: auto; margin-right: auto; }
    .section-dark .section-desc { color: var(--text-muted-dark); }

    /* 通用卡片规范 */
    .feature-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      position: relative;
      height: 100%;
      transition: var(--transition);
      overflow: hidden;
    }
    .feature-card::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--color-pulse);
      transition: var(--transition);
    }
    .feature-card:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 229, 163, 0.6);
      box-shadow: var(--shadow-md);
    }
    .feature-card:hover::after { width: 100%; }
    .dark-card {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      color: var(--text-on-dark);
    }

    /* 板块 01: Hero 5:7 错位大图布局 */
    .hero-section {
      background: linear-gradient(180deg, #0B0D13 0%, #141824 100%);
      color: #fff;
      padding: 72px 0 96px;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid var(--border-dark);
    }
    .hero-grid {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 40px;
    }
    .hero-content {
      flex: 1 1 480px;
      max-width: 580px;
    }
    .hero-visual {
      flex: 1 1 560px;
      position: relative;
    }
    .hero-h1 {
      font-size: clamp(2.25rem, 4vw, 3.4rem);
      font-weight: 800;
      line-height: 1.18;
      letter-spacing: -1px;
      margin-bottom: 22px;
      color: #FFFFFF;
    }
    .hero-lead {
      font-size: 17px;
      line-height: 1.75;
      color: #94A3B8;
      margin-bottom: 32px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 40px;
    }
    .hero-kpis {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
    }
    .kpi-num {
      font-size: 26px;
      font-weight: 800;
      color: var(--color-pulse);
      line-height: 1.1;
    }
    .kpi-label {
      font-size: 13px;
      color: #94A3B8;
      margin-top: 4px;
    }
    .hero-media-box {
      position: relative;
      border-radius: 10px;
      overflow: hidden;
      border: 1px solid var(--border-dark);
      box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
    }
    .hero-media-box img {
      width: 100%;
      object-fit: cover;
      height: 480px;
    }
    .hero-floating-chip {
      position: absolute;
      bottom: 24px;
      left: 24px;
      background: rgba(11, 13, 19, 0.88);
      backdrop-filter: blur(8px);
      padding: 12px 18px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-dark);
      font-size: 13px;
      color: #E2E8F0;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    /* 板块 02: 品牌与架构信任 */
    .brand-param-list {
      list-style: none;
      padding: 0;
      margin: 24px 0 0 0;
    }
    .brand-param-list li {
      margin-bottom: 14px;
      display: flex;
      align-items: flex-start;
      font-size: 15px;
      color: var(--text-sub);
    }
    .brand-param-list svg {
      width: 18px;
      height: 18px;
      fill: var(--color-pulse-text);
      margin-right: 10px;
      flex-shrink: 0;
      margin-top: 4px;
    }
    .param-spec-box {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      margin-top: 24px;
    }
    .spec-badge {
      display: inline-block;
      padding: 4px 10px;
      background: #EEF2F6;
      border-radius: 4px;
      font-size: 12px;
      font-weight: 700;
      margin-right: 8px;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    /* 板块 03: 六大核心优势卡片网格 */
    .grid-6-adv {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
      gap: 24px;
    }
    .adv-idx {
      font-size: 18px;
      font-weight: 800;
      color: var(--color-pulse-text);
      margin-bottom: 12px;
    }
    .adv-title {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    /* 板块 04: 功能矩阵 Tabs */
    .tabs-nav {
      display: flex;
      border-bottom: 1px solid var(--border-light);
      margin-bottom: 32px;
      gap: 8px;
      overflow-x: auto;
      padding-bottom: 2px;
    }
    .tab-btn {
      padding: 12px 24px;
      font-size: 15px;
      font-weight: 700;
      color: var(--text-sub);
      border-bottom: 2px solid transparent;
      cursor: pointer;
      background: none;
      border: none;
      white-space: nowrap;
    }
    .tab-btn.active {
      color: var(--color-pulse-text);
      border-bottom: 2px solid var(--color-pulse-text);
    }
    .tab-pane {
      display: none;
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 36px;
    }
    .tab-pane.active { display: block; }
    .feature-points-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 24px;
      margin-top: 24px;
    }
    .point-box {
      border-left: 2px solid var(--color-pulse-text);
      padding-left: 14px;
    }
    .point-box h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .point-box p {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
    }

    /* 板块 05: 热门模块高对比度 */
    .hot-modules-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 28px;
    }
    .module-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 36px 30px;
      position: relative;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .module-card.featured {
      border-color: var(--color-pulse-text);
      box-shadow: 0 12px 32px rgba(0, 179, 126, 0.12);
    }
    .module-card.featured::before {
      content: '旗舰搭载';
      position: absolute;
      top: 0;
      right: 32px;
      background: var(--color-pulse-text);
      color: #fff;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 0 0 6px 6px;
    }
    .module-badge {
      font-size: 13px;
      font-weight: 700;
      color: var(--text-sub);
      margin-bottom: 8px;
    }
    .module-name {
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 14px;
    }

    /* 板块 06: Z形交错场景 */
    .scenario-row {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 48px;
      margin-bottom: 64px;
    }
    .scenario-row:last-child { margin-bottom: 0; }
    .scenario-row.reverse { flex-direction: row-reverse; }
    .scenario-desc-col { flex: 1 1 450px; }
    .scenario-img-col {
      flex: 1 1 500px;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
    }
    .scenario-img-col img { width: 100%; height: 320px; object-fit: cover; }
    .scenario-tag-group {
      display: flex;
      gap: 8px;
      margin: 16px 0;
    }
    .scenario-pill {
      background: #EDF2F7;
      color: var(--text-main);
      padding: 4px 12px;
      border-radius: 4px;
      font-size: 13px;
      font-weight: 600;
    }

    /* 板块 07: 深色实机截图与演示 */
    .showcase-window {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
    }
    .window-header {
      background: #0B0D13;
      padding: 12px 18px;
      display: flex;
      align-items: center;
      gap: 8px;
      border-bottom: 1px solid var(--border-dark);
    }
    .window-dots {
      display: flex;
      gap: 6px;
    }
    .dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
    .dot.red { background: #FF5F56; }
    .dot.yellow { background: #FFBD2E; }
    .dot.green { background: #27C93F; }
    .window-title {
      font-size: 12px;
      color: #94A3B8;
      margin-left: 12px;
      font-family: var(--font-mono);
    }
    .showcase-body {
      display: flex;
      flex-wrap: wrap;
    }
    .showcase-sidebar {
      flex: 0 0 240px;
      border-right: 1px solid var(--border-dark);
      padding: 20px;
      background: rgba(11, 13, 19, 0.4);
    }
    .showcase-menu-item {
      padding: 10px 14px;
      border-radius: 4px;
      font-size: 14px;
      color: #94A3B8;
      margin-bottom: 6px;
      cursor: pointer;
      display: block;
    }
    .showcase-menu-item.active, .showcase-menu-item:hover {
      background: rgba(0, 229, 163, 0.1);
      color: var(--color-pulse);
    }
    .showcase-screen {
      flex: 1 1 500px;
      padding: 20px;
    }
    .showcase-screen img {
      width: 100%;
      border-radius: 6px;
      height: 400px;
      object-fit: cover;
      border: 1px solid var(--border-dark);
    }

    /* 板块 08: 标杆案例区 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
      gap: 28px;
      margin-top: 40px;
    }
    .case-metric {
      display: flex;
      gap: 20px;
      margin-top: 18px;
      padding-top: 18px;
      border-top: 1px solid var(--border-dark);
    }

    /* 板块 09: 电竞经理采访 */
    .story-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: 10px;
      overflow: hidden;
      display: flex;
      flex-wrap: wrap;
    }
    .story-img-col {
      flex: 1 1 400px;
    }
    .story-img-col img {
      width: 100%;
      height: 100%;
      min-height: 380px;
      object-fit: cover;
    }
    .story-content-col {
      flex: 1 1 500px;
      padding: 48px 40px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .story-quote {
      font-size: 20px;
      font-weight: 700;
      line-height: 1.6;
      color: var(--text-main);
      margin-bottom: 20px;
      position: relative;
    }

    /* 板块 10: 关键数据统计条 */
    .stats-bar-section {
      background: linear-gradient(90deg, #0B0D13 0%, #161B26 100%);
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
      padding: 48px 0;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 32px;
      text-align: center;
    }
    .stat-number {
      font-size: clamp(2rem, 3.5vw, 2.8rem);
      font-weight: 800;
      color: var(--color-pulse);
      line-height: 1.1;
      font-family: var(--font-mono);
    }
    .stat-label {
      font-size: 14px;
      color: #94A3B8;
      margin-top: 8px;
    }

    /* 板块 11: 版本套餐矩阵 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 28px;
    }
    .pricing-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: 10px;
      padding: 40px 32px;
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .pricing-card.premium {
      border: 2px solid var(--color-pulse-text);
      box-shadow: 0 12px 36px rgba(0, 179, 126, 0.1);
    }
    .pricing-tag {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--color-pulse-text);
      color: #fff;
      font-size: 12px;
      font-weight: 700;
      padding: 2px 10px;
      border-radius: 4px;
    }
    .pricing-price {
      font-size: 32px;
      font-weight: 800;
      margin: 18px 0 24px;
      color: var(--text-main);
      font-family: var(--font-mono);
    }
    .pricing-features {
      list-style: none;
      padding: 0;
      margin: 0 0 32px 0;
      flex-grow: 1;
    }
    .pricing-features li {
      font-size: 14px;
      color: var(--text-sub);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
    }
    .pricing-features li::before {
      content: '✓';
      color: var(--color-pulse-text);
      font-weight: 800;
      margin-right: 10px;
    }

    /* 板块 12: 用户口碑评价墙 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
      gap: 24px;
    }
    .review-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px;
    }
    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 18px;
    }
    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--text-sub);
    }

    /* 板块 13: 综合子区 (资讯 + FAQ + CTA) */
    .news-cards-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
      margin-bottom: 64px;
    }
    .news-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); }
    .news-card img { height: 180px; width: 100%; object-fit: cover; }
    .news-card-body { padding: 22px; }
    .news-date { font-size: 12px; color: var(--text-muted); margin-bottom: 6px; }

    .faq-accordion {
      margin-top: 24px;
    }
    .faq-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
    }
    .faq-trigger {
      padding: 18px 22px;
      font-weight: 700;
      font-size: 16px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-content {
      padding: 0 22px 18px;
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.7;
    }

    .cta-banner-box {
      margin-top: 72px;
      background: linear-gradient(135deg, #0B0D13 0%, #171E2D 100%);
      border: 1px solid var(--border-dark);
      border-radius: 12px;
      padding: 48px;
      color: #fff;
    }
    .cta-form-row {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)) 160px;
      gap: 16px;
      margin-top: 28px;
    }
    .cta-input, .cta-select {
      height: 48px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-sm);
      padding: 0 16px;
      color: #fff;
      width: 100%;
    }
    .cta-input:focus, .cta-select:focus {
      border-color: var(--color-pulse);
      outline: none;
    }
    .cta-select option {
      background-color: var(--bg-dark);
      color: #fff;
    }

    /* 页脚规范 */
    .site-footer {
      background: var(--bg-dark);
      color: #94A3B8;
      padding: 72px 0 32px;
      border-top: 1px solid var(--border-dark);
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-col h5 {
      color: #FFFFFF;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li { margin-bottom: 10px; }
    .footer-links a:hover { color: var(--color-pulse); }
    .footer-bottom {
      border-top: 1px solid var(--border-dark);
      padding-top: 28px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 16px;
      font-size: 13px;
    }

    /* 响应式断点优化 */
    @media (max-width: 1024px) {
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .cta-form-row { grid-template-columns: 1fr; }
      .cta-form-row .btn { height: 48px; }
    }
    @media (max-width: 768px) {
      .topbar-utility { display: none; }
      .nav-menu { display: none; }
      .section-wrap { padding: 56px 0; }
      .hero-grid { flex-direction: column; }
      .hero-kpis { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .scenario-row { flex-direction: column !important; }
      .story-card { flex-direction: column; }
      .showcase-body { flex-direction: column; }
      .showcase-sidebar { flex: 1 1 100%; border-right: none; border-bottom: 1px solid var(--border-dark); }
    }