/* roulang page: index */
:root {
      --primary-purple: #7B2FBE;
      --neon-purple: #B44CF0;
      --accent-cyan: #00F0FF;
      --dark-bg: #0B0C10;
      --card-bg: #1A1A24;
      --light-bg: #F4F2F9;
      --text-light: #E0D7FF;
      --text-dark: #1A1A24;
      --border-glow: rgba(123, 47, 190, 0.3);
      --cyan-glow: 0 0 15px rgba(0, 240, 255, 0.35);
      --radius-card: 12px;
      --radius-btn: 6px;
      --transition-base: all 0.25s ease;
    }

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

    body {
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', system-ui, -apple-system, sans-serif;
      background-color: var(--dark-bg);
      color: var(--text-light);
      line-height: 1.6;
      font-weight: 400;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 导航分屏联动样式 */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 64px;
      background: rgba(11, 12, 16, 0.92);
      backdrop-filter: blur(12px);
      z-index: 99;
      display: flex;
      align-items: center;
      border-bottom: 1px solid rgba(123, 47, 190, 0.25);
      transition: var(--transition-base);
    }

    .header-inner {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .logo-area {
      display: flex;
      align-items: center;
      gap: 32px;
    }

    .brand {
      font-size: 1.7rem;
      font-weight: 700;
      letter-spacing: 0.5px;
      background: linear-gradient(135deg, #B44CF0, #00F0FF);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

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

    .nav-links a {
      color: #E0D7FF;
      text-decoration: none;
      font-weight: 500;
      font-size: 0.95rem;
      transition: color 0.2s;
      padding: 6px 0;
      border-bottom: 2px solid transparent;
    }

    .nav-links a:hover,
    .nav-links a.active-anchor {
      color: var(--accent-cyan);
      border-bottom-color: var(--accent-cyan);
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .btn-outline-glow {
      background: transparent;
      border: 1.5px solid var(--accent-cyan);
      color: var(--accent-cyan);
      padding: 8px 20px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 0.9rem;
      transition: var(--transition-base);
      cursor: pointer;
      text-decoration: none;
    }

    .btn-outline-glow:hover {
      background: var(--accent-cyan);
      color: #0B0C10;
      box-shadow: var(--cyan-glow);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      color: var(--accent-cyan);
      font-size: 1.8rem;
      cursor: pointer;
    }

    /* Hero 分屏 */
    .hero-section {
      display: flex;
      min-height: 100vh;
      padding-top: 64px;
      background-color: var(--dark-bg);
    }

    .hero-left {
      width: 45%;
      display: flex;
      flex-direction: column;
      justify-content: center;
      padding: 0 48px 0 24px;
    }

    .hero-right {
      width: 55%;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      position: relative;
      display: flex;
      align-items: flex-end;
      justify-content: center;
    }

    .hero-right::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(123, 47, 190, 0.65), rgba(0, 240, 255, 0.25));
    }

    .hero-badge {
      position: relative;
      z-index: 2;
      margin-bottom: 48px;
      background: rgba(11,12,16,0.7);
      backdrop-filter: blur(8px);
      padding: 12px 28px;
      border-radius: 40px;
      color: white;
      font-weight: 600;
      border: 1px solid var(--accent-cyan);
    }

    h1 {
      font-size: 3.5rem;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 1.2rem;
      letter-spacing: -0.5px;
      background: linear-gradient(to right, #E0D7FF, #ffffff);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-sub {
      font-size: 1.25rem;
      color: var(--accent-cyan);
      margin-bottom: 2rem;
      font-weight: 500;
    }

    .btn-primary {
      background: linear-gradient(135deg, #7B2FBE, #B44CF0);
      border: none;
      color: white;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 700;
      font-size: 1rem;
      text-decoration: none;
      display: inline-block;
      transition: var(--transition-base);
      box-shadow: 0 4px 14px rgba(180, 76, 240, 0.4);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, #00F0FF, #7B2FBE);
      box-shadow: var(--cyan-glow);
      transform: scale(1.02);
    }

    .btn-secondary {
      background: transparent;
      border: 1.5px solid #B44CF0;
      color: #E0D7FF;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      margin-left: 16px;
      transition: var(--transition-base);
    }

    .btn-secondary:hover {
      border-color: var(--accent-cyan);
      color: var(--accent-cyan);
    }

    /* 通用板块 */
    section {
      padding: 90px 0;
    }

    .section-title h2 {
      font-size: 2.5rem;
      font-weight: 700;
      color: white;
      margin-bottom: 16px;
    }

    .section-title p {
      color: #b9adcc;
      font-size: 1.1rem;
      max-width: 700px;
    }

    /* 亮点网格 */
    .strengths-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
      margin-top: 48px;
    }

    .strength-card {
      background: rgba(26,26,36,0.8);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-card);
      padding: 32px 24px;
      transition: var(--transition-base);
    }

    .strength-card:hover {
      border-color: var(--accent-cyan);
      box-shadow: var(--cyan-glow);
      transform: translateY(-6px);
    }

    .strength-card i {
      font-size: 2.5rem;
      color: var(--accent-cyan);
      margin-bottom: 18px;
    }

    /* 瀑布流案例 */
    .showcase-masonry {
      display: flex;
      flex-wrap: wrap;
      gap: 24px;
      margin-top: 48px;
    }

    .showcase-item {
      flex: 1 1 calc(33.333% - 24px);
      background: var(--card-bg);
      border-radius: var(--radius-card);
      overflow: hidden;
      border: 1px solid rgba(123,47,190,0.3);
      transition: var(--transition-base);
    }

    .showcase-item:hover {
      transform: translateY(-6px);
      border-color: var(--accent-cyan);
    }

    .showcase-item img {
      width: 100%;
      height: 200px;
      object-fit: cover;
    }

    .showcase-text {
      padding: 18px;
    }

    /* 对比表 */
    .compare-wrapper {
      display: flex;
      gap: 40px;
      margin-top: 48px;
    }

    .compare-table {
      flex: 1;
      background: white;
      border-radius: var(--radius-card);
      padding: 28px;
      color: #1A1A24;
    }

    .table-highlight {
      border-left: 4px solid var(--accent-cyan);
      padding-left: 12px;
    }

    /* FAQ */
    .accordion-item {
      background: rgba(26,26,36,0.9);
      border: 1px solid var(--border-glow);
      border-radius: 10px;
      margin-bottom: 14px;
      transition: var(--transition-base);
    }

    .accordion-item.is-active {
      border-color: var(--accent-cyan);
    }

    /* 页脚 */
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 48px;
    }

    @media (max-width: 1024px) {
      .hero-left { width: 50%; }
      .hero-right { width: 50%; }
      .strengths-grid { grid-template-columns: repeat(2,1fr); }
      .showcase-item { flex: 1 1 calc(50% - 24px); }
    }

    @media (max-width: 768px) {
      .nav-links, .header-actions .btn-outline-glow { display: none; }
      .menu-toggle { display: block; }
      .hero-section { flex-direction: column; }
      .hero-left, .hero-right { width: 100%; }
      .hero-left { padding: 28px; }
      .hero-right { min-height: 320px; }
      .strengths-grid { grid-template-columns: 1fr; }
      .compare-wrapper { flex-direction: column; }
      .footer-grid { grid-template-columns: 1fr; }
      .showcase-item { flex: 1 1 100%; }
      h1 { font-size: 2.6rem; }
    }