/* roulang page: index */
:root {
      --primary-purple: #7B2FBE;
      --deep-purple: #5C1D8C;
      --neon-cyan: #00F0FF;
      --bg-dark: #0F0F1A;
      --bg-card: rgba(26, 26, 46, 0.7);
      --bg-card-solid: #1A1A2E;
      --text-primary: #FFFFFF;
      --text-secondary: #C0C0D0;
      --text-muted: #B0B0C0;
      --border-glow: rgba(123, 47, 190, 0.3);
      --radius-card: 16px;
      --radius-btn: 30px;
      --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.4);
      --font-heading: 'Orbitron', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    }

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

    body {
      font-family: var(--font-body);
      background-color: var(--bg-dark);
      color: var(--text-secondary);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    h1, h2, h3, h4, .logo, .nav-link {
      font-family: var(--font-heading);
      letter-spacing: 1px;
    }

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

    /* 导航 */
    .top-bar {
      background: rgba(15, 15, 26, 0.85);
      backdrop-filter: blur(15px);
      -webkit-backdrop-filter: blur(15px);
      border-bottom: 1px solid var(--border-glow);
      padding: 0.75rem 0;
      position: fixed;
      width: 100%;
      top: 0;
      z-index: 100;
      transition: background 0.3s ease;
    }

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

    .logo {
      font-size: 1.8rem;
      font-weight: 900;
      background: linear-gradient(135deg, var(--neon-cyan), #B57BFF);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .logo i {
      background: none;
      -webkit-text-fill-color: var(--neon-cyan);
      font-size: 2rem;
    }

    .nav-links {
      display: flex;
      gap: 2rem;
      list-style: none;
      margin: 0;
    }
    .nav-links a {
      color: #ccc;
      text-decoration: none;
      font-weight: 600;
      font-size: 0.95rem;
      transition: color 0.2s, text-shadow 0.2s;
      position: relative;
      padding: 0.25rem 0;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--neon-cyan);
      text-shadow: 0 0 8px rgba(0,240,255,0.6);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--neon-cyan);
      transition: width 0.3s;
      box-shadow: 0 0 10px var(--neon-cyan);
    }
    .nav-links a:hover::after {
      width: 100%;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 1.2rem;
    }
    .search-icon {
      color: #ccc;
      font-size: 1.3rem;
      cursor: pointer;
      transition: color 0.2s;
    }
    .search-icon:hover {
      color: var(--neon-cyan);
    }
    .btn-ghost {
      border: 1px solid var(--neon-cyan);
      background: transparent;
      color: var(--neon-cyan);
      padding: 8px 20px;
      border-radius: 30px;
      font-weight: 600;
      transition: all 0.25s;
    }
    .btn-ghost:hover {
      background: rgba(0,240,255,0.15);
      box-shadow: 0 0 15px rgba(0,240,255,0.3);
    }
    .btn-primary {
      background: var(--neon-cyan);
      color: #0F0F1A;
      border: none;
      padding: 10px 28px;
      border-radius: 30px;
      font-weight: 700;
      letter-spacing: 0.5px;
      box-shadow: 0 0 18px rgba(0,240,255,0.5);
      transition: all 0.25s;
      cursor: pointer;
    }
    .btn-primary:hover {
      background: #33F5FF;
      box-shadow: 0 0 28px rgba(0,240,255,0.8);
      transform: translateY(-2px);
    }

    .hamburger {
      display: none;
      font-size: 1.8rem;
      color: white;
      cursor: pointer;
    }

    /* Hero */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      background: radial-gradient(circle at 30% 40%, rgba(123,47,190,0.25), #0F0F1A 70%);
      position: relative;
      overflow: hidden;
      padding-top: 80px;
    }
    .hero-bg {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      opacity: 0.3;
      z-index: 0;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .hero-text {
      flex: 1 1 500px;
    }
    .hero-text h1 {
      font-size: clamp(2.5rem, 6vw, 4rem);
      font-weight: 900;
      background: linear-gradient(to right, #fff, #C084FC, var(--neon-cyan));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      text-shadow: 0 0 30px rgba(123,47,190,0.6);
      line-height: 1.2;
      margin-bottom: 1.5rem;
    }
    .hero-sub {
      font-size: 1.25rem;
      color: #D0D0E0;
      margin-bottom: 2rem;
    }
    .hero-buttons {
      display: flex;
      gap: 1.2rem;
      flex-wrap: wrap;
    }
    .hero-visual {
      flex: 1 1 400px;
      display: flex;
      justify-content: center;
      animation: float 5s ease-in-out infinite;
    }
    .hero-visual img {
      max-width: 100%;
      height: auto;
      filter: drop-shadow(0 0 30px rgba(123,47,190,0.5));
    }
    @keyframes float {
      0% { transform: translateY(0px); }
      50% { transform: translateY(-15px); }
      100% { transform: translateY(0px); }
    }

    /* 板块通用 */
    section {
      padding: 100px 0;
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: white;
      margin-bottom: 0.5rem;
      border-left: 5px solid var(--neon-cyan);
      padding-left: 1.2rem;
    }
    .section-sub {
      color: #A0A0B8;
      margin-bottom: 3rem;
      font-size: 1.1rem;
    }

    /* 核心数据 */
    .stats-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 2rem;
      justify-content: center;
      margin: 2rem 0 1rem;
    }
    .stat-item {
      background: var(--bg-card);
      backdrop-filter: blur(10px);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-card);
      padding: 2rem 1.5rem;
      text-align: center;
      flex: 1 1 180px;
    }
    .stat-number {
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--neon-cyan);
      text-shadow: 0 0 15px rgba(0,240,255,0.6);
    }

    /* 卡片 */
    .card-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 28px;
    }
    .feature-card {
      background: var(--bg-card);
      backdrop-filter: blur(12px);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-card);
      padding: 2rem;
      transition: all 0.3s ease;
    }
    .feature-card:hover {
      border-color: var(--neon-cyan);
      box-shadow: var(--shadow-glow);
      transform: translateY(-4px);
    }
    .feature-icon {
      font-size: 2.5rem;
      color: var(--neon-cyan);
      margin-bottom: 1rem;
    }
    .feature-card h3 {
      color: white;
      font-size: 1.4rem;
      margin-bottom: 0.8rem;
    }

    /* 产品矩阵横向滚动 */
    .game-scroll {
      display: flex;
      gap: 24px;
      overflow-x: auto;
      padding-bottom: 1rem;
      scrollbar-width: thin;
      scrollbar-color: var(--primary-purple) #1A1A2E;
    }
    .game-card {
      min-width: 280px;
      background: var(--bg-card);
      backdrop-filter: blur(10px);
      border-radius: var(--radius-card);
      border: 1px solid var(--border-glow);
      overflow: hidden;
      transition: 0.3s;
    }
    .game-card:hover {
      border-color: var(--neon-cyan);
      box-shadow: var(--shadow-glow);
    }
    .game-img {
      height: 180px;
      background-size: cover;
      background-position: center;
      position: relative;
    }
    .game-tag {
      position: absolute;
      bottom: 10px;
      left: 10px;
      background: #5C1D8C;
      color: var(--neon-cyan);
      padding: 4px 14px;
      border-radius: 20px;
      font-size: 0.8rem;
    }

    /* 技术区块 */
    .tech-row {
      display: flex;
      align-items: center;
      gap: 3rem;
      margin-bottom: 4rem;
      flex-wrap: wrap;
    }
    .tech-text {
      flex: 1 1 400px;
    }
    .tech-img {
      flex: 1 1 400px;
      border-radius: var(--radius-card);
      overflow: hidden;
      border: 1px solid var(--border-glow);
    }

    /* FAQ */
    .accordion-item {
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      border-radius: 12px;
      margin-bottom: 1rem;
      overflow: hidden;
    }
    .accordion-title {
      background: transparent;
      color: white;
      padding: 1.2rem 1.5rem;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    /* CTA 横幅 */
    .cta-banner {
      background: linear-gradient(135deg, #3A1160, #0F0F1A);
      text-align: center;
      padding: 4rem 1.5rem;
    }

    footer {
      background: #0A0A12;
      color: #999;
      padding: 3rem 0 1.5rem;
    }

    @media (max-width: 1024px) {
      .nav-links { display: none; }
      .hamburger { display: block; }
    }
    @media (max-width: 640px) {
      .hero-content { flex-direction: column; text-align: center; }
    }