/* roulang page: index */
:root {
      --primary-orange: #FF5E2D;
      --deep-blue: #0B1B3D;
      --gold: #F2A900;
      --gray-bg: #F4F6FC;
      --text-dark: #0B1B3D;
      --text-muted: #4A5568;
      --white: #FFFFFF;
      --card-shadow: 0 20px 40px -12px rgba(11, 27, 61, 0.08);
      --card-hover-shadow: 0 30px 50px -12px rgba(255, 94, 45, 0.15);
      --border-radius-lg: 24px;
      --border-radius-btn: 50px;
      --transition: all 0.25s ease;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      background-color: var(--gray-bg);
      color: var(--text-muted);
      line-height: 1.8;
      font-size: 1rem;
      -webkit-font-smoothing: antialiased;
    }
    h1, h2, h3, h4, .oswald {
      font-family: "Oswald", "Noto Sans SC", sans-serif;
      color: var(--deep-blue);
      letter-spacing: -0.4px;
    }
    a {
      text-decoration: none;
      transition: var(--transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 40px;
    }
    @media (max-width: 768px) {
      .container {
        padding: 0 24px;
      }
    }
    /* 玻璃导航 */
    .nav-glass {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.7);
      backdrop-filter: blur(15px);
      -webkit-backdrop-filter: blur(15px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.4);
      box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.05);
      transition: background 0.3s, border-color 0.3s;
    }
    .nav-glass.scrolled {
      background: rgba(11, 27, 61, 0.95);
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .nav-glass.scrolled .logo-text,
    .nav-glass.scrolled .nav-link {
      color: white !important;
    }
    .nav-glass.scrolled .logo-icon {
      color: var(--primary-orange);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 40px;
      max-width: 1400px;
      margin: 0 auto;
    }
    .logo-area {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.6rem;
      font-weight: 700;
      color: var(--deep-blue);
      font-family: "Oswald", "Noto Sans SC", sans-serif;
    }
    .logo-icon {
      font-size: 2rem;
      color: var(--primary-orange);
      transition: color 0.2s;
    }
    .nav-links {
      display: flex;
      gap: 32px;
      align-items: center;
    }
    .nav-link {
      color: var(--deep-blue);
      font-weight: 500;
      font-size: 0.95rem;
      letter-spacing: 0.3px;
      transition: color 0.2s;
      white-space: nowrap;
    }
    .nav-link:hover {
      color: var(--primary-orange);
    }
    .mobile-toggle {
      display: none;
      background: transparent;
      border: none;
      font-size: 1.8rem;
      color: var(--deep-blue);
      cursor: pointer;
      padding: 8px;
    }
    .nav-glass.scrolled .mobile-toggle {
      color: white;
    }
    @media (max-width: 1024px) {
      .nav-links {
        gap: 20px;
        font-size: 0.9rem;
      }
    }
    @media (max-width: 768px) {
      .nav-inner {
        padding: 12px 24px;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        flex-direction: column;
        background: rgba(11, 27, 61, 0.98);
        padding: 24px 0;
        gap: 20px;
        backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(255,255,255,0.2);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links .nav-link {
        color: white;
        font-size: 1.1rem;
        padding: 8px 24px;
      }
    }
    /* 板块间距 */
    section {
      padding: 100px 0;
    }
    @media (max-width: 768px) {
      section {
        padding: 70px 0;
      }
    }
    /* 按钮 */
    .btn-primary {
      background: linear-gradient(135deg, #FF5E2D, #FF3D00);
      color: white;
      border-radius: var(--border-radius-btn);
      padding: 15px 40px;
      font-weight: 600;
      display: inline-block;
      box-shadow: 0 10px 20px -8px rgba(255, 94, 45, 0.4);
      border: none;
      transition: 0.25s;
      letter-spacing: 0.5px;
      font-size: 1rem;
    }
    .btn-primary:hover {
      filter: brightness(1.1);
      box-shadow: 0 18px 28px -8px rgba(255, 94, 45, 0.6);
      transform: translateY(-2px);
      color: white;
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--deep-blue);
      color: var(--deep-blue);
      border-radius: var(--border-radius-btn);
      padding: 13px 38px;
      font-weight: 600;
      display: inline-block;
      transition: 0.25s;
    }
    .btn-outline:hover {
      background: var(--deep-blue);
      color: white;
      border-color: var(--deep-blue);
    }
    /* Hero */
    #hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      background: radial-gradient(circle at 20% 20%, #1a2b4c, #0B1B3D 80%);
      position: relative;
      overflow: hidden;
      padding-top: 80px;
    }
    .hero-content {
      display: flex;
      align-items: center;
      gap: 60px;
      flex-wrap: wrap;
      position: relative;
      z-index: 2;
    }
    .hero-text {
      flex: 1 1 450px;
    }
    .hero-text h1 {
      font-size: 3.5rem;
      font-weight: 700;
      color: white;
      line-height: 1.2;
      margin-bottom: 24px;
      text-shadow: 0 4px 20px rgba(0,0,0,0.4);
    }
    .hero-text h1 span {
      color: var(--primary-orange);
    }
    .hero-sub {
      font-size: 1.2rem;
      color: rgba(255,255,255,0.8);
      margin-bottom: 40px;
    }
    .hero-image {
      flex: 1 1 400px;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      border-radius: 32px;
      min-height: 360px;
      box-shadow: 0 30px 40px -15px black;
    }
    @media (max-width: 768px) {
      .hero-text h1 {
        font-size: 2.5rem;
      }
      .hero-image {
        min-height: 280px;
      }
    }
    /* 卡片 */
    .card-solution {
      background: var(--white);
      border-radius: var(--border-radius-lg);
      padding: 40px 32px;
      box-shadow: var(--card-shadow);
      transition: 0.3s;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .card-solution:hover {
      transform: translateY(-8px);
      box-shadow: var(--card-hover-shadow);
    }
    .icon-gradient {
      font-size: 2.8rem;
      background: linear-gradient(135deg, #FF5E2D, #F2A900);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 20px;
    }
    .card-solution h3 {
      font-size: 1.5rem;
      font-weight: 600;
      margin-bottom: 14px;
    }
    .card-link {
      margin-top: auto;
      font-weight: 600;
      color: var(--primary-orange);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .card-link i {
      transition: transform 0.2s;
    }
    .card-link:hover i {
      transform: translateX(4px);
    }
    /* 数据徽章 */
    .stat-item {
      text-align: center;
      padding: 30px 20px;
    }
    .stat-number {
      font-family: "Oswald", sans-serif;
      font-size: 3.5rem;
      font-weight: 700;
      background: linear-gradient(135deg, #FF5E2D, #FF3D00);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      line-height: 1.2;
    }
    .stat-label {
      color: var(--text-muted);
      font-weight: 500;
      margin-top: 8px;
    }
    /* 证言 */
    .testimonial-card {
      background: white;
      border-radius: 24px;
      padding: 36px;
      box-shadow: 0 20px 35px -12px rgba(0,0,0,0.05);
    }
    .quote-line {
      border-left: 4px solid var(--primary-orange);
      padding-left: 20px;
      font-style: italic;
      margin: 20px 0;
    }
    /* FAQ */
    .accordion-title {
      font-weight: 600;
      font-size: 1.1rem;
      color: var(--deep-blue);
    }
    .accordion-title::before {
      content: "Q ";
      color: var(--primary-orange);
      font-weight: 700;
    }
    /* 页脚 */
    .footer {
      background: var(--deep-blue);
      color: rgba(255,255,255,0.8);
      padding: 70px 0 30px;
    }
    .footer a {
      color: rgba(255,255,255,0.7);
    }
    .footer a:hover {
      color: var(--primary-orange);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.15);
      margin-top: 40px;
      padding-top: 20px;
      text-align: center;
      font-size: 0.9rem;
    }
    input, button {
      font-family: inherit;
    }