/* roulang page: index */
:root {
      --primary: #0A0F1E;
      --secondary: #FF3CAC;
      --accent: #00F0FF;
      --bg-light: #FAFAFA;
      --white: #FFFFFF;
      --gray-100: #F3F4F6;
      --gray-200: #E5E7EB;
      --gray-600: #6B7280;
      --gray-800: #1F2937;
      --shadow-card: 0 4px 24px rgba(10, 15, 30, 0.08);
      --shadow-hover: 0 12px 32px rgba(10, 15, 30, 0.15);
      --radius-card: 20px;
      --radius-badge: 12px;
      --radius-btn: 40px;
      --transition: all 0.25s ease;
      --font-mono: 'DIN Alternate', 'Roboto Mono', 'Courier New', monospace;
    }

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

    body {
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
      background-color: var(--white);
      color: #1F2937;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

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

    a {
      text-decoration: none;
      color: inherit;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 导航 */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      background: rgba(10, 15, 30, 0.85);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      transition: var(--transition);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .logo {
      font-size: 28px;
      font-weight: 700;
      background: linear-gradient(135deg, #FF3CAC 0%, #FF8C5A 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      display: flex;
      align-items: center;
      gap: 6px;
      letter-spacing: 1px;
    }
    .logo-icon {
      font-size: 30px;
      filter: drop-shadow(0 0 6px #FF3CAC);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-links a {
      color: rgba(255,255,255,0.8);
      font-weight: 500;
      font-size: 15px;
      transition: var(--transition);
      position: relative;
    }
    .nav-links a:hover {
      color: var(--secondary);
    }
    .nav-cta {
      background: var(--secondary);
      color: white !important;
      padding: 10px 24px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      box-shadow: 0 4px 12px rgba(255,60,172,0.4);
      margin-left: 8px;
    }
    .nav-cta:hover {
      background: #E0329A;
      transform: scale(1.02);
    }
    .badge-timer {
      background: rgba(255,255,255,0.08);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 14px;
      color: var(--accent);
      font-weight: 600;
      font-family: var(--font-mono);
      display: flex;
      align-items: center;
      gap: 4px;
      margin-left: 12px;
    }
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: transparent;
      border: none;
      cursor: pointer;
    }
    .hamburger span {
      width: 24px;
      height: 2px;
      background: white;
      transition: var(--transition);
    }

    /* Hero */
    .hero {
      background: linear-gradient(135deg, #0A0F1E 0%, #1A1030 100%);
      min-height: 90vh;
      display: flex;
      align-items: center;
      padding: 120px 0 80px;
      position: relative;
      overflow: hidden;
    }
    .hero::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.25;
      mix-blend-mode: overlay;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 40px;
      flex-wrap: wrap;
    }
    .hero-left {
      flex: 1;
    }
    .hero h1 {
      font-size: 52px;
      font-weight: 700;
      background: linear-gradient(to right, #fff, #FFB8E0);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      line-height: 1.2;
      margin-bottom: 20px;
    }
    .hero-sub {
      font-size: 20px;
      color: rgba(255,255,255,0.7);
      margin-bottom: 32px;
    }
    .hero-badges {
      display: flex;
      gap: 20px;
      margin-bottom: 32px;
      flex-wrap: wrap;
    }
    .stat-badge {
      background: rgba(255,60,172,0.12);
      backdrop-filter: blur(8px);
      border-radius: var(--radius-badge);
      padding: 12px 18px;
      color: white;
      font-weight: 600;
    }
    .stat-badge .num {
      font-family: var(--font-mono);
      color: var(--accent);
      font-size: 24px;
      text-shadow: 0 0 12px #00F0FF;
    }
    .btn-primary {
      background: var(--secondary);
      color: white;
      padding: 16px 40px;
      border-radius: var(--radius-btn);
      font-weight: 700;
      font-size: 18px;
      display: inline-block;
      box-shadow: 0 8px 20px rgba(255,60,172,0.5);
      transition: var(--transition);
      border: none;
      cursor: pointer;
      animation: pulse 2s infinite;
    }
    .btn-primary:hover {
      background: #E0329A;
      transform: scale(1.02);
    }
    @keyframes pulse {
      0% { box-shadow: 0 0 0 0 rgba(255,60,172,0.6); }
      70% { box-shadow: 0 0 0 15px rgba(255,60,172,0); }
      100% { box-shadow: 0 0 0 0 rgba(255,60,172,0); }
    }

    /* 板块通用 */
    .section {
      padding: 80px 0;
    }
    .section-title {
      font-size: 36px;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--primary);
    }
    .section-light {
      background: var(--bg-light);
    }
    .section-dark {
      background: var(--primary);
      color: white;
    }

    /* 指标看板 */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .metric-card {
      background: white;
      border-radius: var(--radius-card);
      padding: 28px 20px;
      box-shadow: var(--shadow-card);
      text-align: center;
      transition: var(--transition);
      background: linear-gradient(135deg, #fff 0%, #FFF0F7 100%);
    }
    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .metric-icon {
      font-size: 32px;
      margin-bottom: 12px;
    }
    .metric-value {
      font-family: var(--font-mono);
      font-size: 36px;
      font-weight: 700;
      color: var(--accent);
      text-shadow: 0 0 8px rgba(0,240,255,0.5);
    }

    /* 服务矩阵 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .service-card {
      background: white;
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: var(--transition);
    }
    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border: 1px solid var(--secondary);
    }
    .service-img {
      height: 180px;
      background-size: cover;
      background-position: center;
    }
    .service-body {
      padding: 20px;
    }
    .service-tag {
      background: var(--secondary);
      color: white;
      font-size: 12px;
      padding: 4px 12px;
      border-radius: 20px;
      display: inline-block;
      margin-bottom: 10px;
    }
    .service-body h3 {
      font-size: 22px;
      margin-bottom: 8px;
    }
    .service-link {
      color: var(--secondary);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
      margin-top: 16px;
    }

    /* 对比 */
    .compare-row {
      display: flex;
      gap: 32px;
      align-items: center;
    }
    .compare-card {
      flex: 1;
      background: white;
      border-radius: var(--radius-card);
      padding: 32px;
    }
    .compare-card.dark {
      background: var(--primary);
      color: white;
      border: 1px solid var(--secondary);
    }
    .progress-item {
      margin: 20px 0;
    }
    .progress-bar {
      height: 8px;
      background: #E5E7EB;
      border-radius: 4px;
      margin: 8px 0;
    }
    .progress-fill {
      height: 8px;
      background: var(--accent);
      border-radius: 4px;
      width: 0%;
    }

    /* FAQ */
    .faq-item {
      border-bottom: 1px solid var(--gray-200);
      padding: 20px 0;
    }
    .faq-question {
      font-weight: 600;
      font-size: 18px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      color: #4B5563;
    }

    /* CTA表单 */
    .cta-box {
      background: white;
      border-radius: 28px;
      padding: 48px;
      max-width: 600px;
      margin: 0 auto;
      box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    }
    .input-field {
      width: 100%;
      padding: 16px;
      border-radius: 12px;
      border: 1px solid #D1D5DB;
      margin: 12px 0;
      font-size: 16px;
    }
    .input-field:focus {
      outline: none;
      border-color: var(--secondary);
      box-shadow: 0 0 0 3px rgba(255,60,172,0.3);
    }

    @media (max-width: 1024px) {
      .services-grid { grid-template-columns: repeat(2, 1fr); }
      .metrics-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hamburger { display: flex; }
      .hero h1 { font-size: 32px; }
      .services-grid, .metrics-grid { grid-template-columns: 1fr; }
      .compare-row { flex-direction: column; }
    }