/* roulang page: index */
:root {
      --primary-green: #0E8C3A;
      --warm-green: #1A9E4B;
      --accent-orange: #F15A24;
      --deep-dark: #1B1C20;
      --soft-light: #F7F5F2;
      --neon-green: #00E676;
      --white: #FFFFFF;
      --gray-light: #FAFAFA;
      --gray-mid: #6C757D;
      --border-light: rgba(0,0,0,0.04);
      --shadow-sm: 0 2px 12px rgba(0,0,0,0.04);
      --shadow-hover: 0 12px 30px rgba(0,0,0,0.12);
      --radius-lg: 20px;
      --radius-md: 16px;
      --radius-sm: 12px;
      --radius-btn: 10px;
      --font-body: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
      --font-number: "DIN Alternate", "Bebas Neue", "Oswald", sans-serif;
      --transition: 0.25s ease-in-out;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: var(--font-body);
      background-color: var(--soft-light);
      color: #212529;
      margin: 0;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }

    h1, h2, h3, h4, .h1, .h2, .h3, .h4 {
      font-weight: 700;
      letter-spacing: -0.3px;
    }

    h1 {
      font-size: 3.2rem;
      font-weight: 800;
      letter-spacing: -0.5px;
    }

    h2 {
      font-size: 2.1rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
    }

    h3 {
      font-size: 1.4rem;
      font-weight: 600;
    }

    .text-number {
      font-family: var(--font-number);
      font-weight: 700;
      letter-spacing: 0.5px;
    }

    .container {
      max-width: 1200px;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 导航自定义覆盖 Bootstrap */
    .navbar {
      background-color: transparent;
      transition: background-color 0.3s ease, backdrop-filter 0.3s ease;
      padding: 0.8rem 0;
      z-index: 1020;
    }

    .navbar.scrolled {
      background-color: rgba(27, 28, 32, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255,255,255,0.08);
      box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    }

    .navbar-brand {
      font-weight: 800;
      font-size: 1.8rem;
      color: var(--white) !important;
      display: flex;
      align-items: center;
      gap: 8px;
      letter-spacing: -0.5px;
    }

    .navbar-brand i {
      color: var(--accent-orange);
      font-size: 2rem;
    }

    .nav-link {
      color: rgba(255,255,255,0.85) !important;
      font-weight: 500;
      margin: 0 0.5rem;
      padding: 0.5rem 0.8rem !important;
      border-radius: 8px;
      transition: all 0.2s;
    }

    .nav-link:hover, .nav-link.active {
      color: var(--white) !important;
      background-color: rgba(255,255,255,0.1);
    }

    .navbar-toggler {
      border: none;
      color: white;
    }

    .navbar-toggler-icon {
      background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255, 255, 255, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }

    .hot-tag {
      background-color: rgba(255,255,255,0.12);
      color: white;
      padding: 0.25rem 1rem;
      border-radius: 30px;
      font-size: 0.8rem;
      font-weight: 600;
      transition: 0.2s;
      border: 1px solid transparent;
    }

    .hot-tag:hover {
      background-color: var(--accent-orange);
      border-color: var(--accent-orange);
      color: white;
    }

    .search-icon {
      color: white;
      font-size: 1.3rem;
      cursor: pointer;
      margin-left: 0.5rem;
    }

    /* Hero 区域 */
    #hero {
      background: radial-gradient(circle at top left, #1B1C20 0%, #0E2A1A 100%);
      position: relative;
      min-height: 85vh;
      display: flex;
      align-items: center;
      color: white;
      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;
      z-index: 1;
    }

    .hero-content {
      position: relative;
      z-index: 2;
      width: 100%;
    }

    .badge-float {
      background: rgba(27, 28, 32, 0.8);
      backdrop-filter: blur(8px);
      padding: 0.5rem 1.2rem;
      border-radius: 40px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-weight: 600;
      font-size: 0.95rem;
      border: 1px solid rgba(255,255,255,0.1);
    }

    .badge-float .number {
      font-family: var(--font-number);
      color: var(--neon-green);
      font-size: 1.4rem;
      margin-right: 4px;
    }

    .btn-primary-custom {
      background-color: var(--accent-orange);
      border: none;
      color: white;
      font-weight: 700;
      padding: 0.8rem 2.2rem;
      border-radius: var(--radius-btn);
      transition: all 0.25s;
      box-shadow: 0 6px 18px rgba(241, 90, 36, 0.3);
    }

    .btn-primary-custom:hover {
      background-color: #D94A1A;
      transform: scale(1.03);
      box-shadow: 0 10px 24px rgba(241, 90, 36, 0.4);
      color: white;
    }

    .btn-outline-light-custom {
      border: 2px solid white;
      background: transparent;
      color: white;
      font-weight: 600;
      padding: 0.7rem 2rem;
      border-radius: var(--radius-btn);
      transition: 0.25s;
    }

    .btn-outline-light-custom:hover {
      background: white;
      color: var(--deep-dark);
    }

    /* 卡片通用 */
    .card-custom {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 2rem;
      box-shadow: var(--shadow-sm);
      transition: all var(--transition);
      height: 100%;
    }

    .card-custom:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: transparent;
      background: linear-gradient(white, white) padding-box,
                  linear-gradient(135deg, var(--primary-green), var(--accent-orange)) border-box;
      border: 1px solid transparent;
    }

    .icon-circle {
      width: 56px;
      height: 56px;
      background: var(--primary-green);
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: 1.8rem;
      margin-bottom: 1.2rem;
    }

    .section-dark {
      background-color: var(--deep-dark);
      color: white;
    }

    .section-padding {
      padding: 5rem 0;
    }

    .badge-data {
      background: rgba(14, 140, 58, 0.1);
      color: var(--primary-green);
      font-weight: 600;
      padding: 0.25rem 1rem;
      border-radius: 30px;
      font-size: 0.8rem;
    }

    /* 套餐卡片高亮 */
    .pricing-card.popular {
      border: 2px solid var(--accent-orange);
      position: relative;
      transform: scale(1.02);
      box-shadow: 0 20px 35px rgba(0,0,0,0.08);
    }

    .popular-badge {
      position: absolute;
      top: -12px;
      right: 20px;
      background: var(--accent-orange);
      color: white;
      padding: 0.25rem 1.5rem;
      border-radius: 20px;
      font-weight: 700;
      font-size: 0.8rem;
    }

    .accordion-button {
      font-weight: 600;
      background-color: #FAFAFA;
      border-radius: 12px !important;
      margin-bottom: 6px;
      box-shadow: none;
    }

    .accordion-button:not(.collapsed) {
      background-color: var(--primary-green);
      color: white;
    }

    .accordion-item {
      border: none;
      background: transparent;
    }

    footer {
      background: var(--deep-dark);
      color: #adb5bd;
    }

    footer a {
      color: #ced4da;
      text-decoration: none;
    }

    footer a:hover {
      color: var(--accent-orange);
    }

    @media (max-width: 768px) {
      h1 {
        font-size: 2.2rem;
      }
      .navbar-brand {
        font-size: 1.5rem;
      }
      .card-custom {
        padding: 1.5rem;
      }
      .section-padding {
        padding: 3rem 0;
      }
    }