/* roulang page: index */
:root {
      --bg-deep: #0A0E17;
      --bg-card: #1A1F2E;
      --bg-table: #252B3A;
      --text-primary: #FFFFFF;
      --text-secondary: #B0B8C8;
      --neon-yellow: #D4FF00;
      --neon-pink: #FF2A6D;
      --neon-cyan: #00F0FF;
      --gradient-main: linear-gradient(135deg, #D4FF00, #00F0FF);
      --gradient-sub: linear-gradient(135deg, #FF2A6D, #D4FF00);
      --border-light: rgba(255,255,255,0.08);
      --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
      --shadow-neon-pink: 0 0 15px rgba(255,42,109,0.6);
      --shadow-neon-yellow: 0 4px 15px rgba(212,255,0,0.3);
      --radius-lg: 16px;
      --radius-pill: 50px;
      --radius-md: 12px;
      --transition: 0.3s ease;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: 'Inter', 'Noto Sans SC', sans-serif;
      background-color: var(--bg-deep);
      color: var(--text-primary);
      line-height: 1.7;
      margin: 0;
      overflow-x: hidden;
    }
    h1, h2, h3, h4 {
      font-family: 'Rajdhani', 'Noto Sans SC', sans-serif;
      font-weight: 700;
    }
    .container {
      max-width: 1280px;
      padding-left: 24px;
      padding-right: 24px;
    }
    /* 导航栏自定义覆盖 */
    .navbar {
      background: rgba(10,14,23,0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid transparent;
      position: fixed;
      width: 100%;
      z-index: 1030;
      transition: var(--transition);
    }
    .navbar::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 1px;
      background: linear-gradient(90deg, #D4FF00, #FF2A6D);
    }
    .navbar-brand {
      font-family: 'Rajdhani', 'Noto Sans SC', sans-serif;
      font-weight: 700;
      font-size: 1.8rem;
      letter-spacing: 1px;
      color: #fff !important;
    }
    .navbar-brand span {
      background: var(--gradient-main);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .navbar-nav .nav-link {
      color: var(--text-secondary) !important;
      font-weight: 500;
      font-size: 0.9rem;
      letter-spacing: 0.05em;
      margin: 0 10px;
      padding: 8px 12px !important;
      transition: color 0.2s;
      position: relative;
    }
    .navbar-nav .nav-link:hover,
    .navbar-nav .nav-link.active {
      color: var(--neon-yellow) !important;
    }
    .navbar-nav .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 2px;
      left: 12px;
      width: 20px;
      height: 2px;
      background: var(--neon-yellow);
    }
    .btn-nav-cta {
      background: var(--gradient-main);
      border: none;
      border-radius: var(--radius-pill);
      padding: 8px 22px;
      font-weight: 600;
      font-size: 0.9rem;
      color: #0A0E17;
      letter-spacing: 0.05em;
      box-shadow: var(--shadow-neon-yellow);
      transition: 0.25s;
    }
    .btn-nav-cta:hover {
      background: linear-gradient(180deg, #D4FF00, #00F0FF);
      box-shadow: 0 0 20px rgba(212,255,0,0.5);
      color: #0A0E17;
    }
    /* 通用区块间距 */
    section {
      padding: 100px 0;
      position: relative;
    }
    @media (max-width: 768px) {
      section {
        padding: 60px 0;
      }
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
    }
    /* Hero 区域 */
    .hero-section {
      min-height: 90vh;
      display: flex;
      align-items: center;
      background: radial-gradient(circle at 20% 30%, rgba(212,255,0,0.08) 0%, transparent 50%);
    }
    .hero-title {
      font-size: 56px;
      font-weight: 800;
      line-height: 1.1;
      letter-spacing: -0.02em;
      background: var(--gradient-main);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .hero-title .pink-highlight {
      background: linear-gradient(135deg, #FF2A6D, #D4FF00);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-badge {
      display: flex;
      gap: 24px;
      margin: 28px 0;
    }
    .badge-item {
      display: flex;
      align-items: baseline;
    }
    .badge-number {
      font-size: 32px;
      font-weight: 800;
      background: var(--gradient-main);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      line-height: 1;
    }
    .badge-label {
      color: var(--text-secondary);
      font-size: 0.9rem;
      margin-left: 6px;
    }
    .hero-image-wrapper {
      position: relative;
      border-radius: 24px;
      overflow: hidden;
      box-shadow: 20px 20px 60px rgba(212,255,0,0.15);
    }
    .hero-image-wrapper img {
      width: 100%;
      height: auto;
      display: block;
      border-radius: 24px;
    }
    .hero-image-wrapper::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(212,255,0,0.2), rgba(255,42,109,0.2));
      mix-blend-mode: overlay;
    }
    .btn-primary-glow {
      background: var(--gradient-main);
      border: none;
      border-radius: var(--radius-pill);
      padding: 14px 32px;
      font-weight: 600;
      color: #0A0E17;
      box-shadow: var(--shadow-neon-yellow);
      transition: 0.25s;
    }
    .btn-primary-glow:hover {
      background: linear-gradient(180deg, #D4FF00, #00F0FF);
      box-shadow: 0 0 25px rgba(212,255,0,0.7);
    }
    .btn-outline-neon {
      border: 2px solid var(--neon-pink);
      background: transparent;
      color: var(--neon-pink);
      border-radius: var(--radius-pill);
      padding: 12px 30px;
      font-weight: 600;
      transition: 0.25s;
    }
    .btn-outline-neon:hover {
      background: rgba(255,42,109,0.1);
      color: var(--neon-pink);
    }
    /* 卡片通用 */
    .card-custom {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-card);
      transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
    }
    .card-custom:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-neon-pink);
      border-color: rgba(255,42,109,0.5);
    }
    /* 优势网格 */
    .advantage-icon {
      font-size: 2rem;
      color: var(--neon-yellow);
      margin-bottom: 16px;
    }
    .data-number {
      font-size: 32px;
      font-weight: 800;
      background: var(--gradient-main);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    /* 服务杂志分栏 */
    .service-wide {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      overflow: hidden;
    }
    .service-narrow {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      padding: 24px;
      height: fit-content;
    }
    /* 案例瀑布流 */
    .masonry-grid {
      column-count: 3;
      column-gap: 24px;
    }
    .masonry-item {
      break-inside: avoid;
      margin-bottom: 24px;
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: 0.3s;
      border: 1px solid transparent;
    }
    .masonry-item:hover {
      transform: translateY(-4px);
      border-color: var(--neon-pink);
      box-shadow: var(--shadow-neon-pink);
    }
    .tag-pink {
      background: rgba(255,42,109,0.15);
      color: var(--neon-pink);
      border-radius: 20px;
      padding: 2px 12px;
      font-size: 0.8rem;
    }
    /* 表格 */
    .table-custom {
      background: var(--bg-table);
      border-radius: var(--radius-md);
      overflow: hidden;
    }
    .table-custom th {
      background: #252B3A;
      color: #fff;
    }
    .highlight-col {
      background: rgba(212,255,0,0.05);
      border-left: 2px solid var(--neon-yellow);
    }
    .badge-hot {
      background: var(--gradient-sub);
      color: #0A0E17;
      font-size: 0.75rem;
      border-radius: 20px;
      padding: 2px 10px;
    }
    /* FAQ */
    .accordion-button {
      background: var(--bg-card);
      color: #fff;
      font-weight: 600;
      border-radius: var(--radius-md) !important;
    }
    .accordion-button:not(.collapsed) {
      background: var(--bg-card);
      color: var(--neon-yellow);
      box-shadow: none;
      border-left: 3px solid var(--neon-yellow);
    }
    .accordion-item {
      background: transparent;
      border: none;
      margin-bottom: 16px;
    }
    /* CTA 横幅粒子 */
    .cta-banner {
      background: radial-gradient(circle at 30% 40%, #1A1F2E, #0A0E17);
      position: relative;
      overflow: hidden;
    }
    .particle {
      position: absolute;
      width: 4px;
      height: 4px;
      background: var(--neon-yellow);
      border-radius: 50%;
      opacity: 0.4;
      animation: float 6s infinite;
    }
    @keyframes float {
      0% { transform: translateY(0) scale(1); opacity: 0.3; }
      50% { transform: translateY(-30px) scale(1.5); opacity: 0.7; }
      100% { transform: translateY(0) scale(1); opacity: 0.3; }
    }
    /* 页脚 */
    footer a {
      color: var(--text-secondary);
      text-decoration: none;
    }
    footer a:hover {
      color: var(--neon-yellow);
    }
    @media (max-width: 992px) {
      .hero-title { font-size: 40px; }
      .masonry-grid { column-count: 2; }
    }
    @media (max-width: 768px) {
      .masonry-grid { column-count: 1; }
      .hero-badge { flex-wrap: wrap; }
    }