/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');

    :root {
      --primary-deep: #0A1F3F;
      --accent-cyan: #00E5FF;
      --energy-orange: #FF6B35;
      --bg-light: #F0F4F8;
      --text-dark: #2E3A4D;
      --text-muted: #5A6A7E;
      --card-bg: rgba(255, 255, 255, 0.65);
      --card-border: rgba(255, 255, 255, 0.3);
      --shadow-sm: 0 4px 20px rgba(10, 31, 63, 0.08);
      --shadow-hover: 0 12px 32px rgba(10, 31, 63, 0.15);
      --radius-card: 16px;
      --radius-btn: 12px;
      --radius-input: 8px;
      --glass-blur: blur(18px);
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-dark);
      line-height: 1.6;
      font-size: 16px;
      font-weight: 400;
      scroll-behavior: smooth;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 32px;
    }

    @media (max-width: 768px) {
      .container {
        padding: 0 20px;
      }
    }

    /* 导航栏 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(255, 255, 255, 0.8);
      backdrop-filter: var(--glass-blur);
      -webkit-backdrop-filter: var(--glass-blur);
      border-bottom: 1px solid rgba(255, 255, 255, 0.5);
      box-shadow: 0 4px 12px rgba(10, 31, 63, 0.05);
      z-index: 1000;
      transition: all 0.3s ease;
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 32px;
    }

    .logo {
      font-size: 24px;
      font-weight: 700;
      color: var(--primary-deep);
      letter-spacing: -0.3px;
      text-decoration: none;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .logo-accent {
      width: 8px;
      height: 8px;
      background: var(--accent-cyan);
      border-radius: 2px;
      display: inline-block;
      margin-left: 4px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
    }

    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-dark);
      text-decoration: none;
      position: relative;
      padding: 8px 0;
      transition: color 0.2s;
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent-cyan);
      transition: width 0.25s ease;
    }

    .nav-links a:hover {
      color: var(--accent-cyan);
    }

    .nav-links a:hover::after {
      width: 100%;
    }

    /* Mega Menu 热门入口 */
    .mega-trigger {
      position: relative;
      cursor: pointer;
    }

    .mega-panel {
      position: absolute;
      top: 100%;
      right: 0;
      margin-top: 12px;
      background: var(--card-bg);
      backdrop-filter: var(--glass-blur);
      -webkit-backdrop-filter: var(--glass-blur);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-hover);
      padding: 20px;
      display: flex;
      gap: 20px;
      width: 520px;
      opacity: 0;
      visibility: hidden;
      transform: translateY(10px);
      transition: all 0.25s ease;
      z-index: 1001;
    }

    .mega-trigger:hover .mega-panel {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    .mega-card {
      background: rgba(255,255,255,0.5);
      border-radius: 12px;
      padding: 16px;
      flex: 1;
      transition: background 0.2s;
    }

    .mega-card:hover {
      background: rgba(255,255,255,0.8);
    }

    .mega-card i {
      color: var(--accent-cyan);
      font-size: 20px;
      margin-bottom: 8px;
    }

    .mega-card h4 {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 4px;
    }

    .mega-card p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 移动端汉堡菜单 */
    #menu-toggle {
      display: none;
    }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      z-index: 1002;
    }

    .hamburger span {
      width: 24px;
      height: 2px;
      background: var(--primary-deep);
      transition: 0.3s;
    }

    .mobile-menu {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100vh;
      background: rgba(10, 31, 63, 0.95);
      backdrop-filter: blur(20px);
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 32px;
      z-index: 1000;
    }

    #menu-toggle:checked ~ .mobile-menu {
      display: flex;
    }

    .mobile-menu a {
      font-size: 22px;
      font-weight: 600;
      color: white;
      text-decoration: none;
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
      }
      .hamburger {
        display: flex;
      }
      .nav-container {
        height: 64px;
      }
    }

    /* Hero */
    .hero-section {
      padding: 140px 0 100px;
      background: linear-gradient(135deg, #0A1F3F 0%, #0D2B52 100%);
      position: relative;
      overflow: hidden;
    }

    .hero-bg-lines {
      position: absolute;
      inset: 0;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      opacity: 0.25;
      mix-blend-mode: overlay;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
      position: relative;
      z-index: 2;
    }

    .hero-title {
      font-size: 48px;
      font-weight: 700;
      line-height: 1.2;
      letter-spacing: -0.5px;
      color: white;
      margin-bottom: 20px;
    }

    .hero-sub {
      font-size: 18px;
      color: rgba(255,255,255,0.8);
      margin-bottom: 28px;
    }

    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, #00E5FF 0%, #0099FF 100%);
      border: none;
      color: white;
      font-weight: 600;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      box-shadow: 0 0 16px rgba(0,229,255,0.3);
      cursor: pointer;
      transition: all 0.25s;
      text-decoration: none;
      display: inline-block;
    }

    .btn-primary:hover {
      box-shadow: 0 0 28px rgba(0,229,255,0.6);
      transform: scale(1.03);
    }

    .btn-secondary {
      background: transparent;
      border: 1.5px solid var(--accent-cyan);
      color: var(--accent-cyan);
      font-weight: 600;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      cursor: pointer;
      transition: 0.25s;
      text-decoration: none;
    }

    .btn-secondary:hover {
      background: rgba(0,229,255,0.08);
    }

    .float-cards {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .float-card {
      background: rgba(255,255,255,0.1);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255,255,255,0.2);
      border-radius: 16px;
      padding: 18px 24px;
      color: white;
      animation: float 4s infinite ease-in-out;
    }

    .float-card:nth-child(2) { animation-delay: 0.6s; }
    .float-card:nth-child(3) { animation-delay: 1.2s; }

    @keyframes float {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-6px); }
    }

    .float-number {
      font-family: 'Inter', sans-serif;
      font-size: 32px;
      font-weight: 800;
      color: var(--energy-orange);
    }

    @media (max-width: 768px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .hero-title {
        font-size: 36px;
      }
    }

    /* 指标看板 */
    .metrics-section {
      background: linear-gradient(135deg, #0A1F3F 0%, #0D2B52 100%);
      padding: 80px 0;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .metric-card {
      background: rgba(255,255,255,0.08);
      backdrop-filter: blur(14px);
      border: 1px solid rgba(255,255,255,0.15);
      border-radius: var(--radius-card);
      padding: 28px 20px;
      text-align: center;
      color: white;
    }

    .metric-icon {
      font-size: 28px;
      color: var(--accent-cyan);
      margin-bottom: 12px;
    }

    .metric-number {
      font-family: 'Inter', sans-serif;
      font-size: 40px;
      font-weight: 800;
      color: var(--energy-orange);
      line-height: 1;
    }

    .metric-label {
      font-size: 14px;
      color: rgba(255,255,255,0.7);
      margin-top: 8px;
    }

    @media (max-width: 768px) {
      .metrics-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    /* 服务矩阵 */
    .services-section {
      padding: 100px 0;
      background: var(--bg-light);
    }

    .section-title {
      font-size: 36px;
      font-weight: 600;
      color: var(--primary-deep);
      margin-bottom: 48px;
      text-align: center;
    }

    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: var(--card-bg);
      backdrop-filter: var(--glass-blur);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-card);
      padding: 32px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(0,229,255,0.3);
    }

    .service-img {
      width: 60px;
      height: 60px;
      background: rgba(0,229,255,0.1);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
    }

    .service-card h3 {
      font-size: 22px;
      font-weight: 600;
      margin-bottom: 10px;
    }

    .service-link {
      color: var(--accent-cyan);
      text-decoration: none;
      font-weight: 500;
      margin-top: 16px;
      display: inline-block;
    }

    @media (max-width: 1024px) {
      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 640px) {
      .services-grid {
        grid-template-columns: 1fr;
      }
    }

    /* 对比区 */
    .compare-section {
      padding: 100px 0;
      background: #E9EFF5;
    }

    .compare-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0;
      background: white;
      border-radius: 24px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .compare-col {
      padding: 48px 40px;
    }

    .compare-left {
      background: #f8fafc;
    }

    .compare-right {
      background: white;
    }

    .compare-item {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 20px;
      font-size: 16px;
    }

    .compare-right .compare-item {
      font-weight: 600;
      color: var(--primary-deep);
    }

    .check-icon {
      color: var(--accent-cyan);
    }

    @media (max-width: 768px) {
      .compare-grid {
        grid-template-columns: 1fr;
      }
    }

    /* FAQ */
    .faq-section {
      padding: 100px 0;
    }

    .faq-item {
      background: white;
      border-radius: 12px;
      margin-bottom: 16px;
      box-shadow: 0 2px 12px rgba(0,0,0,0.04);
      overflow: hidden;
    }

    .faq-question {
      padding: 20px 28px;
      font-weight: 600;
      font-size: 18px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      background: white;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      padding: 0 28px;
      background: #f9fbfd;
      color: var(--text-muted);
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 20px 28px;
    }

    /* 表单 */
    .contact-section {
      padding: 100px 0;
      background: var(--bg-light);
    }

    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      background: white;
      border-radius: 24px;
      padding: 48px;
      box-shadow: var(--shadow-sm);
    }

    .trust-badge {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 24px;
    }

    .form-input {
      width: 100%;
      padding: 14px 18px;
      border: 1px solid #dce3eb;
      border-radius: var(--radius-input);
      margin-bottom: 20px;
      transition: 0.2s;
    }

    .form-input:focus {
      border-color: var(--accent-cyan);
      box-shadow: 0 0 0 3px rgba(0,229,255,0.2);
      outline: none;
    }

    .btn-submit {
      background: linear-gradient(135deg, #00E5FF 0%, #FF6B35 100%);
      border: none;
      color: white;
      font-weight: 700;
      padding: 16px 32px;
      border-radius: var(--radius-btn);
      width: 100%;
      cursor: pointer;
      box-shadow: 0 0 20px rgba(0,229,255,0.4);
      transition: 0.3s;
    }

    .btn-submit:hover {
      box-shadow: 0 0 32px rgba(255,107,53,0.5);
    }

    @media (max-width: 768px) {
      .contact-grid {
        grid-template-columns: 1fr;
        padding: 28px;
      }
    }

    footer {
      background: var(--primary-deep);
      color: rgba(255,255,255,0.7);
      padding: 48px 0 24px;
      text-align: center;
    }

    footer a {
      color: rgba(255,255,255,0.8);
      text-decoration: none;
      margin: 0 12px;
    }