/* roulang page: index */
:root {
      /* 主色系 - 暗调竞技场 */
      --bg-deep: #0A0E17;
      --bg-card: #141A26;
      --bg-input: #1E2533;
      --border-card: #2A3441;
      
      /* 强调色 */
      --quantum-cyan: #00F0FF;
      --tactical-red: #FF4655;
      --glory-gold: #FFD700;
      
      /* 文字层级 */
      --text-primary: #FFFFFF;
      --text-body: #B0B8C5;
      --text-muted: #7A8496;
      
      /* 效果与间距 */
      --glow-cyan: 0 0 12px rgba(0, 240, 255, 0.4);
      --shadow-card-hover: 0 8px 24px rgba(0, 240, 255, 0.08);
      --radius-md: 8px;
      --radius-sm: 4px;
      --spacing-section: 100px;
      --spacing-card: 32px;
      --spacing-grid: 24px;
    }
    
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    
    body {
      font-family: 'Inter', 'SF Pro Text', -apple-system, 'Microsoft YaHei', sans-serif;
      background-color: var(--bg-deep);
      color: var(--text-body);
      line-height: 1.8;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      overflow-x: hidden;
    }
    
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }
    
    /* 排版 */
    h1 {
      font-size: 48px;
      line-height: 56px;
      font-weight: 700;
      letter-spacing: -0.5px;
      color: var(--text-primary);
    }
    
    h2 {
      font-size: 32px;
      line-height: 40px;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 16px;
    }
    
    h3 {
      font-size: 20px;
      line-height: 28px;
      font-weight: 500;
      color: var(--text-primary);
    }
    
    .section-title {
      text-align: center;
      margin-bottom: 48px;
    }
    
    .section-subtitle {
      color: var(--text-muted);
      text-align: center;
      max-width: 640px;
      margin: 0 auto 48px;
      font-size: 16px;
    }
    
    /* 导航栏 - 沉浸式半透明 */
    header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      background: rgba(10, 14, 23, 0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-card);
      transition: background 0.3s ease;
    }
    
    nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    
    .logo {
      font-size: 24px;
      font-weight: 700;
      color: var(--text-primary);
      text-decoration: none;
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    
    .logo i {
      color: var(--quantum-cyan);
      font-size: 28px;
    }
    
    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    
    .nav-capsule {
      padding: 8px 20px;
      border-radius: 40px;
      color: var(--text-body);
      text-decoration: none;
      font-weight: 500;
      font-size: 15px;
      transition: all 0.2s ease;
      white-space: nowrap;
    }
    
    .nav-capsule:hover {
      color: var(--quantum-cyan);
      background: rgba(0, 240, 255, 0.05);
    }
    
    .nav-capsule.active {
      background: var(--quantum-cyan);
      color: var(--bg-deep);
      font-weight: 600;
      box-shadow: var(--glow-cyan);
    }
    
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    
    .search-icon {
      color: var(--text-body);
      font-size: 20px;
      cursor: pointer;
      transition: color 0.2s;
      background: none;
      border: none;
      padding: 8px;
    }
    
    .search-icon:hover {
      color: var(--quantum-cyan);
    }
    
    .cta-nav {
      background: var(--tactical-red);
      color: white;
      padding: 10px 24px;
      border-radius: 40px;
      font-weight: 600;
      font-size: 15px;
      text-decoration: none;
      transition: all 0.2s ease;
      box-shadow: 0 4px 12px rgba(255, 70, 85, 0.2);
      white-space: nowrap;
    }
    
    .cta-nav:hover {
      background: #ff5e6b;
      transform: translateX(2px);
    }
    
    .hamburger {
      display: none;
      background: none;
      border: none;
      color: var(--text-primary);
      font-size: 24px;
      cursor: pointer;
      padding: 8px;
    }
    
    /* 移动端侧边抽屉 */
    .mobile-drawer {
      position: fixed;
      top: 0;
      right: -100%;
      width: 80%;
      max-width: 320px;
      height: 100vh;
      background: var(--bg-card);
      backdrop-filter: blur(20px);
      z-index: 1100;
      padding: 32px 24px;
      transition: right 0.3s ease;
      display: flex;
      flex-direction: column;
      gap: 32px;
      border-left: 1px solid var(--border-card);
    }
    
    .mobile-drawer.open {
      right: 0;
    }
    
    .drawer-close {
      align-self: flex-end;
      background: none;
      border: none;
      color: white;
      font-size: 28px;
      cursor: pointer;
    }
    
    .mobile-nav-links {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    
    .mobile-nav-links a {
      color: var(--text-body);
      text-decoration: none;
      font-size: 18px;
      padding: 12px 0;
      border-bottom: 1px solid var(--border-card);
      transition: color 0.2s;
      display: block;
    }
    
    .mobile-nav-links a:hover {
      color: var(--quantum-cyan);
      border-left: 3px solid var(--quantum-cyan);
      padding-left: 12px;
    }
    
    /* 首屏 Hero */
    .hero {
      padding: 160px 0 100px;
      position: relative;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
      min-height: 85vh;
      display: flex;
      align-items: center;
    }
    
    .hero-overlay {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(10, 14, 23, 0.75);
      z-index: 1;
    }
    
    .hero .container {
      position: relative;
      z-index: 2;
      display: flex;
      align-items: center;
      gap: 60px;
      flex-wrap: wrap;
    }
    
    .hero-left {
      flex: 1 1 500px;
    }
    
    .hero-left h1 {
      margin-bottom: 24px;
    }
    
    .hero-desc {
      font-size: 18px;
      color: var(--text-body);
      margin-bottom: 36px;
      max-width: 480px;
    }
    
    .hero-cta-group {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    
    .btn-primary {
      background: var(--quantum-cyan);
      color: var(--bg-deep);
      font-weight: 700;
      padding: 14px 32px;
      border-radius: var(--radius-md);
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: all 0.2s;
      box-shadow: var(--glow-cyan);
      border: none;
      cursor: pointer;
      font-size: 16px;
    }
    
    .btn-primary:hover {
      background: #33F4FF;
      transform: translateY(-2px);
    }
    
    .btn-secondary {
      background: transparent;
      border: 1px solid var(--quantum-cyan);
      color: var(--quantum-cyan);
      font-weight: 600;
      padding: 14px 32px;
      border-radius: var(--radius-md);
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: all 0.2s;
      cursor: pointer;
    }
    
    .btn-secondary:hover {
      background: rgba(0, 240, 255, 0.05);
    }
    
    .hero-right {
      flex: 1 1 400px;
      display: flex;
      justify-content: center;
    }
    
    .mini-dashboard {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: 16px;
      padding: 32px;
      width: 100%;
      max-width: 420px;
      box-shadow: 0 16px 40px rgba(0,0,0,0.5);
      backdrop-filter: blur(4px);
    }
    
    .live-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(255,70,85,0.15);
      color: var(--tactical-red);
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 24px;
    }
    
    .live-dot {
      width: 8px;
      height: 8px;
      background: var(--tactical-red);
      border-radius: 50%;
      animation: pulse 1.5s infinite;
    }
    
    @keyframes pulse {
      0% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.5; transform: scale(0.8); }
      100% { opacity: 1; transform: scale(1); }
    }
    
    .data-row {
      display: flex;
      justify-content: space-between;
      margin-bottom: 16px;
      font-size: 15px;
    }
    
    .data-value {
      font-weight: 700;
      color: var(--quantum-cyan);
      font-feature-settings: "tnum";
    }
    
    .trend-line {
      height: 4px;
      background: linear-gradient(90deg, var(--quantum-cyan), var(--glory-gold));
      border-radius: 2px;
      margin: 24px 0 12px;
      width: 80%;
    }
    
    /* 板块通用 */
    section {
      padding: var(--spacing-section) 0;
    }
    
    /* 核心数据指标看板 */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: var(--spacing-grid);
    }
    
    .metric-card {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: var(--spacing-card);
      text-align: center;
      transition: all 0.3s ease;
    }
    
    .metric-card:hover {
      border-color: var(--quantum-cyan);
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-4px);
    }
    
    .metric-number {
      font-size: 36px;
      font-weight: 700;
      color: var(--quantum-cyan);
      font-feature-settings: "tnum";
      margin-bottom: 8px;
      transition: color 0.3s;
    }
    
    .metric-card:hover .metric-number {
      color: var(--glory-gold);
    }
    
    .metric-trend {
      color: var(--tactical-red);
      font-size: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 4px;
      margin-top: 8px;
    }
    
    /* 服务矩阵 */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: var(--spacing-grid);
    }
    
    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: var(--spacing-card);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }
    
    .service-card:hover {
      border-color: var(--quantum-cyan);
      box-shadow: var(--shadow-card-hover);
    }
    
    .service-icon {
      font-size: 32px;
      color: var(--text-muted);
      margin-bottom: 20px;
      transition: color 0.3s;
    }
    
    .service-card:hover .service-icon {
      color: var(--quantum-cyan);
    }
    
    .tech-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 16px;
      opacity: 0;
      transition: opacity 0.3s;
    }
    
    .service-card:hover .tech-tags {
      opacity: 1;
    }
    
    .tag {
      background: rgba(0,240,255,0.1);
      color: var(--quantum-cyan);
      padding: 2px 10px;
      border-radius: 20px;
      font-size: 12px;
      font-weight: 500;
    }
    
    /* 对比表格风格 */
    .comparison-wrapper {
      display: flex;
      gap: 32px;
      flex-wrap: wrap;
    }
    
    .comparison-col {
      flex: 1 1 280px;
      background: var(--bg-card);
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      padding: 32px;
    }
    
    .comparison-col.highlight {
      background: rgba(0, 240, 255, 0.03);
      border-color: var(--quantum-cyan);
      box-shadow: 0 0 20px rgba(0,240,255,0.1);
    }
    
    .comparison-item {
      display: flex;
      justify-content: space-between;
      padding: 12px 0;
      border-bottom: 1px solid var(--border-card);
    }
    
    .strikethrough {
      text-decoration: line-through;
      color: var(--text-muted);
    }
    
    /* FAQ 手风琴 */
    .faq-container {
      display: flex;
      gap: 40px;
      flex-wrap: wrap;
    }
    
    .faq-filters {
      flex: 1 1 200px;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    
    .filter-btn {
      background: transparent;
      border: 1px solid var(--border-card);
      color: var(--text-body);
      padding: 12px 20px;
      border-radius: var(--radius-md);
      text-align: left;
      cursor: pointer;
      transition: all 0.2s;
    }
    
    .filter-btn.active {
      border-color: var(--quantum-cyan);
      color: var(--quantum-cyan);
      background: rgba(0,240,255,0.05);
    }
    
    .faq-list {
      flex: 3 1 600px;
    }
    
    .faq-item {
      border: 1px solid var(--border-card);
      border-radius: var(--radius-md);
      margin-bottom: 12px;
      overflow: hidden;
      transition: all 0.2s;
    }
    
    .faq-question {
      padding: 20px 24px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: var(--bg-card);
    }
    
    .faq-answer {
      padding: 0 24px 20px;
      display: none;
      color: var(--text-body);
    }
    
    .faq-item.active {
      border-left: 3px solid var(--tactical-red);
      background: var(--bg-card);
    }
    
    .faq-item.active .faq-answer {
      display: block;
    }
    
    /* CTA 表单区 */
    .cta-section {
      background: var(--bg-card);
      border-radius: 16px;
      padding: 60px;
      text-align: center;
      border: 1px solid var(--border-card);
    }
    
    .inline-form {
      display: flex;
      gap: 16px;
      max-width: 500px;
      margin: 32px auto 0;
      flex-wrap: wrap;
    }
    
    .inline-form input {
      flex: 1;
      background: var(--bg-input);
      border: 1px solid var(--border-card);
      padding: 14px 20px;
      border-radius: var(--radius-md);
      color: white;
      font-size: 16px;
      transition: border 0.2s;
    }
    
    .inline-form input:focus {
      outline: none;
      border-color: var(--quantum-cyan);
      box-shadow: 0 0 8px rgba(0,240,255,0.3);
    }
    
    /* 页脚 */
    footer {
      background: #080c14;
      padding: 60px 0 20px;
      border-top: 1px solid var(--border-card);
    }
    
    .footer-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      margin-bottom: 40px;
    }
    
    .footer-col h4 {
      color: var(--text-primary);
      margin-bottom: 16px;
    }
    
    .footer-col a {
      display: block;
      color: var(--text-muted);
      text-decoration: none;
      margin-bottom: 10px;
      transition: color 0.2s;
    }
    
    .footer-col a:hover {
      color: var(--quantum-cyan);
    }
    
    .copyright {
      border-top: 1px solid var(--border-card);
      padding-top: 20px;
      text-align: center;
      color: var(--text-muted);
      font-size: 14px;
    }
    
    /* 响应式设计 */
    @media (max-width: 1024px) {
      .metrics-grid { grid-template-columns: repeat(2, 1fr); }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      h1 { font-size: 40px; line-height: 48px; }
    }
    
    @media (max-width: 768px) {
      .nav-links, .nav-actions .cta-nav { display: none; }
      .hamburger { display: block; }
      .hero { padding: 120px 0 60px; }
      .hero .container { flex-direction: column; }
      .metrics-grid { grid-template-columns: 1fr 1fr; }
      .service-grid { grid-template-columns: 1fr; }
      .faq-container { flex-direction: column; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      h1 { font-size: 32px; line-height: 40px; }
      .cta-section { padding: 32px 20px; }
    }
    
    @media (max-width: 520px) {
      .metrics-grid { grid-template-columns: 1fr; }
      .inline-form { flex-direction: column; }
      .hero-cta-group { flex-direction: column; align-items: stretch; }
    }