/* roulang page: index */
:root {
      --bg-base: #0c1017;
      --bg-surface: #111722;
      --bg-card: #151c28;
      --bg-card-hover: #1c2536;
      --primary: #00e599;
      --primary-hover: #00c784;
      --accent: #6c5ce7;
      --text-main: #f0f3f8;
      --text-muted: #8c9ba5;
      --border-soft: rgba(255, 255, 255, 0.08);
      --border-highlight: rgba(0, 229, 153, 0.35);
      --font-stack: system-ui, -apple-system, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.4);
      --shadow-glow: 0 0 25px rgba(0, 229, 153, 0.2);
      --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      --container-max: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
      background-color: var(--bg-base);
    }

    body {
      font-family: var(--font-stack);
      color: var(--text-main);
      background-color: var(--bg-base);
      line-height: 1.75;
      letter-spacing: 0.02em;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

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

    button, input, select, textarea {
      font-family: inherit;
      font-size: inherit;
    }

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

    /* 顶部服务栏与导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(12, 16, 23, 0.92);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-soft);
    }

    .header-topbar {
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 0.825rem;
      color: var(--text-muted);
      padding: 6px 0;
    }

    .topbar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }

    .topbar-meta span {
      margin-right: 18px;
    }

    .topbar-meta span:last-child {
      margin-right: 0;
    }

    .main-nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 0;
    }

    .nav-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
    }

    .brand-icon {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #0c1017;
      font-weight: 900;
      font-size: 1.1rem;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }

    .nav-link {
      font-size: 0.95rem;
      color: var(--text-muted);
      position: relative;
      padding: 4px 0;
    }

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

    .nav-cta-btn {
      background: var(--primary);
      color: #0c1017;
      padding: 9px 20px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.9rem;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .nav-cta-btn:hover {
      background: var(--primary-hover);
      box-shadow: var(--shadow-glow);
    }

    /* 移动端菜单切换 */
    .menu-toggle {
      display: none;
      background: transparent;
      border: 1px solid var(--border-soft);
      color: var(--text-main);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      cursor: pointer;
    }

    /* Section 公共结构 */
    .page-section {
      padding: 80px 0;
      border-bottom: 1px solid var(--border-soft);
      position: relative;
    }

    .section-alt {
      background-color: var(--bg-surface);
    }

    .section-header {
      margin-bottom: 48px;
      max-width: 820px;
    }

    .section-tag {
      display: inline-block;
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      margin-bottom: 10px;
      background: rgba(0, 229, 153, 0.08);
      padding: 3px 10px;
      border-radius: 4px;
      border: 1px solid rgba(0, 229, 153, 0.2);
    }

    .section-title {
      font-size: 2rem;
      line-height: 1.35;
      color: var(--text-main);
      margin-bottom: 14px;
      font-weight: 700;
    }

    .section-desc {
      color: var(--text-muted);
      font-size: 1rem;
      line-height: 1.75;
    }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 13px 28px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 1rem;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      gap: 8px;
    }

    .btn-primary {
      background: var(--primary);
      color: #0c1017;
    }

    .btn-primary:hover {
      background: var(--primary-hover);
      box-shadow: var(--shadow-glow);
      transform: translateY(-2px);
    }

    .btn-secondary {
      background: rgba(255, 255, 255, 0.05);
      color: var(--text-main);
      border-color: var(--border-soft);
    }

    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: var(--primary);
      color: var(--primary);
    }

    /* 板块 1: Hero */
    .hero-section {
      padding: 100px 0 80px;
      position: relative;
      background: radial-gradient(circle at 80% 20%, rgba(108, 92, 231, 0.15) 0%, transparent 50%),
                  radial-gradient(circle at 20% 80%, rgba(0, 229, 153, 0.08) 0%, transparent 40%),
                  var(--bg-base);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 50px;
      align-items: center;
    }

    .hero-h1 {
      font-size: 2.85rem;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 22px;
      background: linear-gradient(180deg, #ffffff 40%, #b0c4de 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-summary {
      font-size: 1.05rem;
      color: var(--text-muted);
      margin-bottom: 34px;
      line-height: 1.8;
    }

    .hero-actions {
      display: flex;
      gap: 16px;
      margin-bottom: 36px;
      flex-wrap: wrap;
    }

    .hero-badges {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
      border-top: 1px solid var(--border-soft);
      padding-top: 24px;
    }

    .hero-badge-item {
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--text-muted);
      font-size: 0.85rem;
    }

    .hero-badge-item svg {
      width: 18px;
      height: 18px;
      fill: var(--primary);
    }

    .hero-media-wrapper {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-highlight);
      box-shadow: 0 20px 45px rgba(0, 0, 0, 0.6);
      background-color: var(--bg-card);
    }

    .hero-media-wrapper img {
      width: 100%;
      height: 380px;
      object-fit: cover;
      filter: saturate(1.1);
    }

    .hero-live-tag {
      position: absolute;
      top: 16px;
      right: 16px;
      background: rgba(12, 16, 23, 0.8);
      border: 1px solid var(--primary);
      padding: 6px 12px;
      border-radius: 20px;
      font-size: 0.75rem;
      color: var(--primary);
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .live-dot {
      width: 8px;
      height: 8px;
      background-color: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--primary);
    }

    /* 板块 2: 卖点三连 */
    .selling-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .selling-card {
      background: var(--bg-card);
      border: 1px solid var(--border-soft);
      padding: 32px 26px;
      border-radius: var(--radius-md);
      transition: var(--transition);
      position: relative;
    }

    .selling-card:hover {
      border-color: var(--primary);
      transform: translateY(-4px);
      box-shadow: var(--shadow-card);
    }

    .card-icon-box {
      width: 48px;
      height: 48px;
      background: rgba(0, 229, 153, 0.1);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--primary);
      font-size: 1.25rem;
    }

    .selling-card h3 {
      font-size: 1.25rem;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .selling-card p {
      font-size: 0.925rem;
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    .metric-pill {
      display: inline-block;
      font-size: 0.8rem;
      color: var(--primary);
      background: rgba(0, 229, 153, 0.08);
      padding: 4px 10px;
      border-radius: 4px;
      border-left: 2px solid var(--primary);
    }

    /* 板块 3: 深度介绍与技术参数 */
    .intro-grid {
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      gap: 48px;
      align-items: center;
    }

    .intro-figure {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-soft);
    }

    .intro-figure img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    .param-box {
      margin-top: 24px;
      background: rgba(0, 0, 0, 0.35);
      border-radius: var(--radius-sm);
      padding: 18px 22px;
      border-left: 3px solid var(--accent);
    }

    .param-title {
      font-size: 0.9rem;
      color: var(--accent);
      font-weight: 600;
      margin-bottom: 8px;
    }

    .param-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin: 0;
    }

    /* 板块 4: 核心优势网格 */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .adv-card {
      background: var(--bg-card);
      border: 1px solid var(--border-soft);
      padding: 28px 24px;
      border-radius: var(--radius-md);
      transition: var(--transition);
    }

    .adv-card:hover {
      border-color: rgba(255, 255, 255, 0.2);
      background: var(--bg-card-hover);
      transform: translateY(-3px);
    }

    .adv-index {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--accent);
      margin-bottom: 12px;
    }

    .adv-card h3 {
      font-size: 1.15rem;
      margin-bottom: 10px;
    }

    .adv-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 板块 5: 热门应用方案与产品线 */
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      align-items: stretch;
    }

    .solution-card {
      background: var(--bg-card);
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-md);
      padding: 32px 26px;
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .solution-card.featured {
      border-color: var(--primary);
      box-shadow: var(--shadow-glow);
    }

    .solution-tag {
      align-self: flex-start;
      font-size: 0.75rem;
      padding: 3px 8px;
      background: rgba(108, 92, 231, 0.2);
      color: #b0a4ff;
      border-radius: 4px;
      margin-bottom: 16px;
    }

    .solution-card h3 {
      font-size: 1.3rem;
      margin-bottom: 12px;
    }

    .solution-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      flex-grow: 1;
    }

    .feature-list {
      list-style: none;
      margin-bottom: 28px;
    }

    .feature-list li {
      font-size: 0.875rem;
      color: var(--text-main);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .feature-list li::before {
      content: "✓";
      color: var(--primary);
      font-weight: bold;
    }

    /* 板块 6: 架构理念与管线节点 */
    .concept-wrapper {
      background: #06090e;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-lg);
      padding: 40px;
    }

    .flow-steps {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
      margin-top: 36px;
    }

    .flow-node {
      background: var(--bg-card);
      border: 1px solid var(--border-soft);
      padding: 20px 16px;
      border-radius: var(--radius-sm);
      position: relative;
      text-align: center;
    }

    .flow-node-num {
      width: 28px;
      height: 28px;
      background: var(--primary);
      color: #0c1017;
      font-weight: 700;
      border-radius: 50%;
      margin: 0 auto 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.85rem;
    }

    .flow-node h4 {
      font-size: 0.95rem;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .flow-node p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 板块 7: 全球游戏运营故事 */
    .stories-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }

    .story-card {
      background: var(--bg-card);
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    .story-cover {
      height: 220px;
      width: 100%;
      object-fit: cover;
    }

    .story-body {
      padding: 26px;
    }

    .story-meta {
      display: flex;
      justify-content: space-between;
      font-size: 0.8rem;
      color: var(--accent);
      margin-bottom: 12px;
      font-weight: 600;
    }

    .story-body h3 {
      font-size: 1.2rem;
      margin-bottom: 12px;
    }

    .story-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 8: 核心指标统计条 */
    .metrics-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
      background: var(--bg-surface);
      border-top: 1px solid var(--border-soft);
      border-bottom: 1px solid var(--border-soft);
      padding: 48px 0;
    }

    .metric-value {
      font-size: 2.75rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 6px;
      font-variant-numeric: tabular-nums;
    }

    .metric-label {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* 板块 9: 专家评价与口碑 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: var(--bg-card);
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-md);
      padding: 26px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 0.925rem;
      color: var(--text-main);
      margin-bottom: 20px;
      font-style: italic;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 16px;
    }

    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--bg-surface);
      border: 1px solid var(--border-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }

    .author-info h4 {
      font-size: 0.9rem;
      color: var(--text-main);
    }

    .author-info span {
      font-size: 0.775rem;
      color: var(--text-muted);
    }

    /* 板块 10: 行业动态与技术资讯 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .news-card {
      background: var(--bg-card);
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: var(--transition);
    }

    .news-card:hover {
      border-color: rgba(255, 255, 255, 0.2);
    }

    .news-date {
      font-size: 0.8rem;
      color: var(--accent);
      margin-bottom: 10px;
      display: block;
    }

    .news-card h3 {
      font-size: 1.1rem;
      margin-bottom: 12px;
      line-height: 1.5;
    }

    .news-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 16px;
    }

    .news-link {
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 板块 11: FAQ 手风琴 */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
    }

    .faq-question {
      padding: 18px 24px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .faq-answer {
      padding: 0 24px 20px;
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* 板块 12: 保障与合规标识条 */
    .guarantee-bar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
      background: rgba(0, 0, 0, 0.25);
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-md);
      padding: 24px 36px;
    }

    .guarantee-item {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .guarantee-icon {
      font-size: 1.5rem;
      color: var(--primary);
    }

    .guarantee-item strong {
      display: block;
      font-size: 0.95rem;
      color: var(--text-main);
    }

    .guarantee-item span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 板块 13: 留资与咨询 */
    .cta-card-box {
      background: linear-gradient(145deg, #151c28, #101620);
      border: 1px solid var(--border-highlight);
      border-radius: var(--radius-lg);
      padding: 56px 40px;
      max-width: 880px;
      margin: 0 auto;
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    }

    .cta-inner-header {
      text-align: center;
      margin-bottom: 36px;
    }

    .cta-form {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .form-full {
      grid-column: span 2;
    }

    .form-group label {
      display: block;
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 8px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      background: rgba(8, 12, 18, 0.8);
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-sm);
      padding: 12px 16px;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--primary);
      box-shadow: 0 0 10px rgba(0, 229, 153, 0.2);
    }

    .form-privacy-note {
      font-size: 0.8rem;
      color: var(--text-muted);
      text-align: center;
      margin-top: 18px;
    }

    /* 底部固定转化条 */
    .floating-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(12, 16, 23, 0.95);
      backdrop-filter: blur(12px);
      border-top: 1px solid var(--border-highlight);
      padding: 12px 0;
      z-index: 999;
      transform: translateY(120%);
      transition: transform 0.3s ease;
    }

    .floating-bar.active {
      transform: translateY(0);
    }

    .floating-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
    }

    .floating-info {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .floating-title {
      font-weight: 700;
      font-size: 0.95rem;
      color: var(--text-main);
    }

    .floating-sub {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .floating-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    /* 页脚 */
    .site-footer {
      background: #080c12;
      border-top: 1px solid var(--border-soft);
      padding: 60px 0 100px;
      color: var(--text-muted);
      font-size: 0.875rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 48px;
    }

    .footer-brand h4 {
      color: var(--text-main);
      font-size: 1.15rem;
      margin-bottom: 14px;
    }

    .footer-col h5 {
      color: var(--text-main);
      font-size: 0.95rem;
      margin-bottom: 16px;
    }

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

    .footer-links li {
      margin-bottom: 10px;
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 14px;
      font-size: 0.8rem;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .selling-grid,
      .advantages-grid,
      .solutions-grid,
      .reviews-grid,
      .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps {
        grid-template-columns: repeat(3, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .hero-grid,
      .intro-grid,
      .stories-grid {
        grid-template-columns: 1fr;
      }
      .selling-grid,
      .advantages-grid,
      .solutions-grid,
      .reviews-grid,
      .news-grid {
        grid-template-columns: 1fr;
      }
      .flow-steps {
        grid-template-columns: 1fr;
      }
      .metrics-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
      }
      .cta-form {
        grid-template-columns: 1fr;
      }
      .form-full {
        grid-column: span 1;
      }
      .nav-links {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-surface);
        padding: 24px;
        border-bottom: 1px solid var(--border-soft);
      }
      .floating-sub {
        display: none;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-h1 {
        font-size: 2.1rem;
      }
    }