/* roulang page: index */
:root {
      --primary-orange: #F04E23;
      --primary-orange-hover: #D43E1A;
      --secondary-gray: #1E1E24;
      --accent-cyan: #00D4AA;
      --bg-light: #F7F5F4;
      --bg-white: #FFFFFF;
      --text-dark: #1E1E24;
      --text-body: #3A3A40;
      --text-muted: #6B6B70;
      --text-light: #F7F5F4;
      --border-light: #D1D1D6;
      --shadow-sm: 0 2px 12px rgba(0,0,0,0.06);
      --shadow-hover: 0 8px 24px rgba(240,78,35,0.15);
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-input: 6px;
      --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
      --transition-fast: 0.2s ease;
      --transition-smooth: 0.25s ease;
    }
    
    * {
      box-sizing: border-box;
    }
    
    body {
      font-family: var(--font-sans);
      background-color: var(--bg-light);
      color: var(--text-body);
      line-height: 1.7;
      margin: 0;
      padding: 0;
      overflow-x: hidden;
    }
    
    h1, h2, h3, h4 {
      color: var(--text-dark);
      font-weight: 600;
    }
    
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition-fast);
    }
    
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    
    .container-custom {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 15px;
      padding-right: 15px;
    }
    
    /* 导航栏 */
    .navbar-custom {
      background-color: rgba(30, 30, 36, 0.92);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(0, 212, 170, 0.3);
      padding: 10px 0;
      position: sticky;
      top: 0;
      z-index: 1030;
    }
    
    .navbar-custom .container-custom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
    }
    
    .logo-brand {
      font-size: 1.6rem;
      font-weight: 700;
      color: var(--primary-orange);
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    
    .logo-brand i {
      font-size: 1.8rem;
      color: var(--accent-cyan);
      transform: rotate(15deg);
    }
    
    .search-wrapper {
      position: relative;
      flex: 1;
      max-width: 360px;
      margin: 0 20px;
    }
    
    .search-wrapper input {
      width: 100%;
      background: white;
      border: none;
      border-radius: 30px;
      padding: 10px 20px 10px 45px;
      font-size: 0.95rem;
      outline: none;
      box-shadow: 0 2px 8px rgba(0,0,0,0.1);
      transition: var(--transition-fast);
    }
    
    .search-wrapper input:focus {
      box-shadow: 0 0 0 3px rgba(0,212,170,0.3);
    }
    
    .search-icon {
      position: absolute;
      left: 18px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--accent-cyan);
      font-size: 1.1rem;
    }
    
    .btn-cta-nav {
      background: var(--primary-orange);
      color: white;
      border: none;
      border-radius: var(--radius-btn);
      padding: 10px 22px;
      font-weight: 600;
      font-size: 0.9rem;
      transition: var(--transition-fast);
      white-space: nowrap;
    }
    
    .btn-cta-nav:hover {
      background: var(--primary-orange-hover);
      transform: scale(1.03);
      color: white;
    }
    
    .mobile-search-icon, .navbar-toggler-custom {
      display: none;
      color: white;
      font-size: 1.4rem;
      cursor: pointer;
      background: none;
      border: none;
    }
    
    /* 移动端导航 */
    @media (max-width: 767px) {
      .navbar-custom .container-custom {
        flex-wrap: wrap;
      }
      .search-wrapper {
        display: none;
        order: 3;
        max-width: 100%;
        margin: 10px 0 0;
        width: 100%;
      }
      .search-wrapper.active {
        display: block;
      }
      .mobile-search-icon {
        display: block;
        margin-right: 15px;
      }
      .navbar-toggler-custom {
        display: block;
      }
      .btn-cta-nav {
        display: none;
      }
    }
    
    /* Hero */
    .hero-section {
      background: linear-gradient(135deg, #2A1A15 0%, #1E1E24 70%);
      position: relative;
      overflow: hidden;
      color: var(--text-light);
      padding: 70px 0;
    }
    
    .hero-bg-particles {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: radial-gradient(circle at 30% 40%, rgba(240,78,35,0.15) 0%, transparent 50%);
      pointer-events: none;
    }
    
    .hero-content {
      position: relative;
      z-index: 2;
    }
    
    .hero-title {
      font-size: 3.4rem;
      font-weight: 700;
      line-height: 1.2;
      letter-spacing: -0.5px;
      color: white;
      margin-bottom: 1.2rem;
    }
    
    .hero-subtitle {
      font-size: 1.15rem;
      color: rgba(255,255,255,0.85);
      margin-bottom: 2rem;
      max-width: 550px;
    }
    
    .hero-visual {
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      min-height: 320px;
      border-radius: var(--radius-card);
      position: relative;
      box-shadow: 0 20px 40px rgba(0,0,0,0.4);
      display: flex;
      align-items: center;
      justify-content: center;
    }
    
    .play-icon {
      font-size: 3.5rem;
      color: rgba(255,255,255,0.9);
      background: rgba(0,0,0,0.5);
      width: 90px;
      height: 90px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      backdrop-filter: blur(5px);
    }
    
    .btn-primary-custom {
      background: var(--primary-orange);
      color: white;
      border: none;
      border-radius: var(--radius-btn);
      padding: 14px 36px;
      font-weight: 600;
      transition: var(--transition-fast);
      display: inline-block;
      text-align: center;
    }
    
    .btn-primary-custom:hover {
      background: var(--primary-orange-hover);
      transform: scale(1.03);
      color: white;
    }
    
    .btn-outline-cyan {
      background: transparent;
      border: 2px solid var(--accent-cyan);
      color: var(--accent-cyan);
      border-radius: var(--radius-btn);
      padding: 12px 34px;
      font-weight: 600;
      transition: var(--transition-fast);
      display: inline-block;
    }
    
    .btn-outline-cyan:hover {
      background: var(--accent-cyan);
      color: #1E1E24;
    }
    
    /* 数据带 */
    .stats-bar {
      background: var(--bg-white);
      padding: 30px 0;
      border-bottom: 1px solid #eee;
    }
    
    .stat-item h3 {
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--primary-orange);
      margin-bottom: 0.2rem;
    }
    
    .stat-item span {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 500;
    }
    
    /* 区块标题 */
    .section-title {
      font-size: 2.2rem;
      font-weight: 600;
      margin-bottom: 0.5rem;
      position: relative;
      display: inline-block;
    }
    
    .section-title::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -8px;
      width: 40px;
      height: 3px;
      background: var(--accent-cyan);
      border-radius: 2px;
    }
    
    /* 卡片系统 */
    .feature-card, .service-card, .case-card {
      background: var(--bg-white);
      border-radius: var(--radius-card);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition-smooth);
      height: 100%;
      border: 1px solid transparent;
    }
    
    .feature-card:hover, .service-card:hover, .case-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
      border-color: rgba(0,212,170,0.3);
    }
    
    .service-img {
      height: 180px;
      background-size: cover;
      background-position: center;
      border-radius: 8px;
      margin-bottom: 18px;
    }
    
    .case-card {
      padding: 0;
      overflow: hidden;
    }
    
    .case-img {
      height: 200px;
      background-size: cover;
      background-position: center;
    }
    
    .case-info {
      padding: 16px;
      background: var(--secondary-gray);
      color: white;
    }
    
    .badge-cyan {
      background: var(--accent-cyan);
      color: #1E1E24;
      font-weight: 600;
      font-size: 0.75rem;
      padding: 4px 10px;
      border-radius: 20px;
    }
    
    /* 流程 */
    .process-step {
      text-align: center;
      position: relative;
    }
    
    .step-icon {
      font-size: 2.2rem;
      color: var(--accent-cyan);
      margin-bottom: 12px;
    }
    
    /* FAQ */
    .accordion-custom .accordion-button {
      background: #F7F5F4;
      font-weight: 600;
      border-radius: var(--radius-card) !important;
      box-shadow: none;
      padding: 16px 20px;
      color: var(--text-dark);
    }
    
    .accordion-custom .accordion-button:not(.collapsed) {
      background: white;
      border-left: 4px solid var(--primary-orange);
      color: var(--primary-orange);
    }
    
    /* 联系表单 */
    .contact-section {
      background: var(--secondary-gray);
      color: var(--text-light);
    }
    
    .form-control-custom {
      background: rgba(255,255,255,0.1);
      border: 1px solid rgba(255,255,255,0.2);
      border-radius: var(--radius-input);
      color: white;
      padding: 12px 16px;
    }
    
    .form-control-custom:focus {
      border-color: var(--accent-cyan);
      box-shadow: 0 0 0 3px rgba(0,212,170,0.25);
      background: rgba(255,255,255,0.15);
      color: white;
    }
    
    .footer-custom {
      background: #15151a;
      color: #aaa;
    }
    
    @media (max-width: 767px) {
      .hero-title {
        font-size: 2.2rem;
      }
      .section-title {
        font-size: 1.8rem;
      }
      .stat-item h3 {
        font-size: 2rem;
      }
    }