/* roulang page: index */
:root {
      --bg-base: #0B0E14;
      --bg-surface: #141A23;
      --bg-surface-elevated: #1A2230;
      --bg-card: rgba(26, 34, 48, 0.7);
      --text-main: #FFFFFF;
      --text-muted: #A0AEC0;
      --text-sub: #64748B;
      --accent-start: #00F2FE;
      --accent-end: #4FACFE;
      --accent-purple: #6A11CB;
      --accent-blue: #2575FC;
      --color-green: #00E676;
      --color-gold: #FFB800;
      --color-red: #FF4D4F;
      --border-light: rgba(255, 255, 255, 0.08);
      --border-accent: rgba(0, 242, 254, 0.3);
      --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.45);
      --radius-lg: 18px;
      --radius-badge: 30px;
      --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
      line-height: 1.65;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition-smooth);
    }
    a:hover {
      color: var(--accent-start);
    }

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

    .gradient-text {
      background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .data-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 14px;
      border-radius: var(--radius-badge);
      background: rgba(0, 242, 254, 0.08);
      border: 1px solid var(--border-accent);
      color: var(--accent-start);
      font-size: 0.8rem;
      font-weight: 600;
      letter-spacing: 0.5px;
      font-family: "Courier New", Courier, monospace, sans-serif;
    }
    .data-badge.gold {
      background: rgba(255, 184, 0, 0.08);
      border-color: rgba(255, 184, 0, 0.3);
      color: var(--color-gold);
    }
    .data-badge.green {
      background: rgba(0, 230, 118, 0.08);
      border-color: rgba(0, 230, 118, 0.3);
      color: var(--color-green);
    }
    .data-badge .dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: currentColor;
      box-shadow: 0 0 8px currentColor;
    }

    .btn-brand-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: 8px;
      background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
      color: #06090E;
      font-weight: 700;
      font-size: 0.95rem;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 18px rgba(0, 242, 254, 0.25);
      transition: var(--transition-smooth);
    }
    .btn-brand-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 26px rgba(0, 242, 254, 0.4);
      color: #000;
    }

    .btn-brand-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 24px;
      border-radius: 8px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--border-light);
      color: var(--text-main);
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      transition: var(--transition-smooth);
    }
    .btn-brand-secondary:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: var(--accent-start);
      color: var(--accent-start);
      transform: translateY(-2px);
    }

    /* Header 政务规范双行顶栏 */
    .top-utility-bar {
      height: 38px;
      background: #080B10;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      font-size: 0.78rem;
      color: var(--text-sub);
    }
    .top-utility-bar .grid-container {
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .status-indicator {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--color-green);
    }
    .status-indicator::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--color-green);
      box-shadow: 0 0 6px var(--color-green);
    }

    .site-nav-header {
      background: var(--bg-surface);
      border-bottom: 1px solid var(--border-light);
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    }
    .nav-inner {
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .nav-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.25rem;
      font-weight: 800;
      letter-spacing: -0.5px;
    }
    .nav-logo-icon {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #0B0E14;
      font-size: 1.1rem;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 24px;
      list-style: none;
      margin: 0;
    }
    .nav-links a {
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-muted);
      padding: 6px 0;
      position: relative;
    }
    .nav-links a.active, .nav-links a:hover {
      color: #FFF;
    }
    .nav-links a.active::after {
      content: "";
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent-start);
      border-radius: 2px;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    /* Section 通用规范 */
    section {
      padding: 85px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-surface);
      border-top: 1px solid var(--border-light);
      border-bottom: 1px solid var(--border-light);
    }
    .section-highlight {
      background-color: var(--bg-surface-elevated);
      border-top: 1px solid var(--border-light);
      border-bottom: 1px solid var(--border-light);
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-header h2 {
      font-size: 2rem;
      font-weight: 700;
      margin-bottom: 14px;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .section-header p {
      color: var(--text-muted);
      font-size: 0.98rem;
      max-width: 680px;
      margin-bottom: 0;
      line-height: 1.6;
    }

    /* 卡片体系 */
    .card-block {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-card);
      transition: var(--transition-smooth);
      height: 100%;
      backdrop-filter: blur(8px);
    }
    .card-block:hover {
      transform: translateY(-4px);
      border-color: rgba(0, 242, 254, 0.35);
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6);
    }

    /* 板块一：Hero 众筹预热 / 核心驱动 */
    #hero {
      padding: 70px 0 85px;
      background: radial-gradient(circle at 80% 20%, rgba(0, 242, 254, 0.08) 0%, transparent 50%),
                  radial-gradient(circle at 20% 80%, rgba(106, 17, 203, 0.08) 0%, transparent 50%),
                  var(--bg-base);
      position: relative;
      border-bottom: 1px solid var(--border-light);
    }
    .hero-content h1 {
      font-size: 2.7rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 18px;
      letter-spacing: -1px;
    }
    .hero-content .hero-desc {
      color: var(--text-muted);
      font-size: 1.05rem;
      line-height: 1.7;
      margin-bottom: 30px;
      max-width: 580px;
    }
    .hero-progress-box {
      background: var(--bg-surface);
      border: 1px solid var(--border-accent);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-card);
    }
    .progress-radial-wrap {
      display: flex;
      align-items: center;
      gap: 20px;
      margin-bottom: 24px;
    }
    .radial-circle {
      width: 100px;
      height: 100px;
      border-radius: 50%;
      background: conic-gradient(var(--accent-start) 0% 88%, rgba(255,255,255,0.08) 88% 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
    }
    .radial-circle::after {
      content: "";
      position: absolute;
      width: 78px;
      height: 78px;
      border-radius: 50%;
      background: var(--bg-surface);
    }
    .radial-circle span {
      position: relative;
      z-index: 2;
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--text-main);
      font-family: monospace;
    }
    .tier-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-bottom: 20px;
    }
    .tier-item {
      padding: 12px;
      border-radius: 10px;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border-light);
      font-size: 0.85rem;
    }
    .tier-item strong {
      display: block;
      color: #FFF;
      font-size: 0.95rem;
      margin-bottom: 4px;
    }

    /* 板块二：指标看板条 */
    #metrics {
      padding: 45px 0;
      background: #0D1118;
      border-bottom: 1px solid var(--border-light);
    }
    .metric-item {
      text-align: center;
      padding: 16px;
      border-right: 1px solid rgba(255, 255, 255, 0.06);
    }
    .metric-item:last-child {
      border-right: none;
    }
    .metric-number {
      font-size: 2.4rem;
      font-weight: 800;
      font-family: "Courier New", Courier, monospace, sans-serif;
      line-height: 1.1;
      margin-bottom: 6px;
    }
    .metric-label {
      color: var(--text-muted);
      font-size: 0.85rem;
    }

    /* 板块三：架构与合集目录 */
    .arch-code-box {
      background: #080B10;
      border: 1px solid var(--border-light);
      border-radius: 12px;
      padding: 20px;
      font-family: monospace;
      font-size: 0.85rem;
      color: var(--accent-start);
      line-height: 1.6;
    }

    /* 板块四：技术优势网格 */
    .feature-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: rgba(0, 242, 254, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent-start);
      font-size: 1.25rem;
      margin-bottom: 18px;
      border: 1px solid var(--border-accent);
    }

    /* 板块五：产品服务矩阵 */
    .product-tier-card {
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 34px 28px;
      background: var(--bg-surface);
      position: relative;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .product-tier-card.featured {
      border-color: var(--accent-start);
      box-shadow: 0 0 25px rgba(0, 242, 254, 0.18);
    }
    .product-tier-card ul {
      list-style: none;
      margin: 20px 0 28px;
      padding: 0;
      flex-grow: 1;
    }
    .product-tier-card ul li {
      font-size: 0.88rem;
      color: var(--text-muted);
      padding: 8px 0;
      border-bottom: 1px dashed rgba(255, 255, 255, 0.05);
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .product-tier-card ul li i {
      color: var(--color-green);
      font-size: 0.8rem;
    }

    /* 板块六：赛事分析案例 */
    .case-panel {
      background: #080C12;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      overflow: hidden;
    }
    .case-chart-preview {
      background: #05070A;
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
      min-height: 320px;
    }

    /* 板块七：前后对比表格/分栏 */
    .compare-box {
      border-radius: var(--radius-lg);
      padding: 28px;
      height: 100%;
    }
    .compare-box.traditional {
      background: rgba(255, 77, 79, 0.04);
      border: 1px solid rgba(255, 77, 79, 0.2);
    }
    .compare-box.advanced {
      background: rgba(0, 230, 118, 0.04);
      border: 1px solid rgba(0, 230, 118, 0.25);
    }

    /* 板块八：技术演进时间轴 */
    .timeline-stream {
      position: relative;
      padding-left: 28px;
      border-left: 2px solid rgba(255, 255, 255, 0.1);
    }
    .timeline-node {
      position: relative;
      margin-bottom: 34px;
    }
    .timeline-node::before {
      content: "";
      position: absolute;
      left: -35px;
      top: 6px;
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: var(--accent-start);
      box-shadow: 0 0 10px var(--accent-start);
    }

    /* 板块九：实战应用故事 */
    .story-card {
      background: var(--bg-surface);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      overflow: hidden;
      height: 100%;
    }
    .story-card-body {
      padding: 24px;
    }

    /* 板块十：行业口碑评价 */
    .testimonial-quote {
      font-style: italic;
      color: #E2E8F0;
      font-size: 0.92rem;
      margin-bottom: 20px;
      line-height: 1.6;
    }
    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--accent-start);
      border: 1px solid var(--border-accent);
    }

    /* 板块十一：资讯列表 */
    .insight-featured {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-light);
      background: var(--bg-surface);
      height: 100%;
    }
    .insight-list-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: 12px;
      padding: 18px;
      margin-bottom: 14px;
      transition: var(--transition-smooth);
    }
    .insight-list-item:hover {
      border-color: var(--border-accent);
      transform: translateX(4px);
    }

    /* 板块十二：合规与安全保障 */
    .security-badge-item {
      text-align: center;
      padding: 26px 16px;
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: 14px;
      height: 100%;
    }
    .security-badge-item i {
      font-size: 2rem;
      color: var(--accent-start);
      margin-bottom: 14px;
    }

    /* 板块十三：常见疑问解答手风琴 */
    .faq-accordion-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-light);
      border-radius: 12px;
      margin-bottom: 12px;
      overflow: hidden;
    }
    .faq-accordion-header {
      padding: 18px 22px;
      font-weight: 600;
      font-size: 1rem;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      color: #FFF;
    }
    .faq-accordion-content {
      padding: 0 22px 18px;
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块十四：接入表单 */
    .form-wrapper-box {
      max-width: 820px;
      margin: 0 auto;
      background: var(--bg-surface);
      border: 1px solid var(--border-accent);
      border-radius: 20px;
      padding: 40px;
      box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    }
    .form-control-custom {
      background: #090C11;
      border: 1px solid var(--border-light);
      color: #FFF;
      border-radius: 8px;
      padding: 12px 16px;
      font-size: 0.9rem;
      width: 100%;
      margin-bottom: 18px;
      transition: var(--transition-smooth);
    }
    .form-control-custom:focus {
      outline: none;
      border-color: var(--accent-start);
      background: #0D121A;
      box-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
    }

    /* Footer 结构 */
    footer.site-footer {
      background: #06080C;
      border-top: 1px solid var(--border-light);
      padding: 65px 0 35px;
      font-size: 0.88rem;
      color: var(--text-sub);
    }
    .footer-title {
      font-size: 1rem;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: var(--text-muted);
    }
    .footer-links a:hover {
      color: var(--accent-start);
    }
    .footer-bottom {
      margin-top: 50px;
      padding-top: 25px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      text-align: center;
      font-size: 0.8rem;
    }

    /* 移动端与自适应优化 */
    @media (max-width: 1024px) {
      .nav-links {
        display: none;
      }
      .metric-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      }
      .metric-item:last-child {
        border-bottom: none;
      }
    }
    @media (max-width: 640px) {
      .hero-content h1 {
        font-size: 2rem;
      }
      section {
        padding: 55px 0;
      }
      .form-wrapper-box {
        padding: 24px;
      }
      .top-utility-bar {
        display: none;
      }
    }