/* roulang page: index */
:root {
      --deep-space: #0A0E27;
      --electric-purple: #6C3CFA;
      --cyan-neon: #00F0FF;
      --purple-black: #1A1035;
      --card-bg: rgba(255, 255, 255, 0.05);
      --white-soft: #E0E0FF;
      --text-body: #B0B0CC;
      --text-muted: #8888AA;
      --border-light: rgba(255, 255, 255, 0.1);
      --shadow-card: 0 8px 32px rgba(108, 60, 250, 0.15);
      --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.4);
      --radius-card: 16px;
      --radius-btn: 30px;
      --radius-input: 8px;
      --radius-badge: 20px;
      --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    }

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

    body {
      font-family: var(--font-sans);
      background: radial-gradient(circle at 20% 20%, #1A1035, #0A0E27);
      color: var(--text-body);
      line-height: 1.5;
      font-size: 15px;
      overflow-x: hidden;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    a {
      color: var(--cyan-neon);
      text-decoration: none;
      transition: color 0.2s ease;
    }

    a:hover {
      color: var(--electric-purple);
    }

    .container-custom {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 顶部信息条 */
    .top-bar-premium {
      background: rgba(0, 0, 0, 0.5);
      backdrop-filter: blur(8px);
      height: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 24px;
      font-size: 12px;
      color: var(--text-muted);
      position: relative;
      z-index: 10;
    }
    .top-bar-premium .brand-domain {
      color: #ccc;
    }
    .top-bar-premium .login-cta {
      color: var(--cyan-neon);
      font-weight: 600;
      letter-spacing: 0.3px;
    }

    /* 主导航 */
    .main-header {
      position: relative;
      width: 100%;
      background: transparent;
      z-index: 9;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 0;
      flex-wrap: wrap;
    }
    .logo-area {
      display: flex;
      align-items: baseline;
      gap: 6px;
    }
    .logo-text {
      font-size: 28px;
      font-weight: 800;
      background: linear-gradient(135deg, var(--electric-purple), var(--cyan-neon));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      letter-spacing: -0.5px;
      line-height: 1.2;
    }
    .logo-sub {
      font-size: 14px;
      color: var(--text-body);
      font-weight: 400;
      margin-left: 6px;
      letter-spacing: 0.5px;
    }
    .nav-links {
      display: flex;
      gap: 28px;
      align-items: center;
    }
    .nav-links a {
      color: #CCCCEE;
      font-weight: 500;
      font-size: 15px;
      position: relative;
      padding: 4px 0;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--electric-purple);
      transition: width 0.2s ease;
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .hamburger {
      display: none;
      background: none;
      border: none;
      color: white;
      font-size: 24px;
      cursor: pointer;
    }

    /* Hero */
    #hero {
      position: relative;
      padding: 80px 0 100px;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
      overflow: hidden;
    }
    #hero::before {
      content: '';
      position: absolute;
      top:0; left:0; right:0; bottom:0;
      background: radial-gradient(circle at 30% 40%, rgba(10,14,39,0.6) 0%, rgba(10,14,39,0.9) 90%);
      z-index: 1;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 40px;
    }
    .hero-left {
      flex: 1 1 500px;
    }
    .hero-left h1 {
      font-size: 38px;
      font-weight: 800;
      background: linear-gradient(to right, #B388FF, #00F0FF);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      line-height: 1.2;
      margin-bottom: 16px;
    }
    .hero-left .sub {
      font-size: 17px;
      color: #B0B0CC;
      margin-bottom: 28px;
    }
    .btn-group {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--electric-purple);
      color: white;
      border-radius: 30px;
      padding: 12px 28px;
      font-weight: 600;
      border: none;
      transition: all 0.2s;
      box-shadow: 0 4px 12px rgba(108,60,250,0.5);
    }
    .btn-primary:hover {
      background: #7B5CFC;
      box-shadow: 0 0 20px rgba(0,240,255,0.4);
      transform: scale(1.03);
      color: white;
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--cyan-neon);
      color: var(--cyan-neon);
      border-radius: 30px;
      padding: 12px 28px;
      font-weight: 600;
      transition: 0.2s;
    }
    .btn-outline:hover {
      background: rgba(0,240,255,0.1);
      box-shadow: 0 0 15px rgba(0,240,255,0.3);
    }
    .hero-right {
      flex: 1 1 350px;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .floating-badge {
      background: rgba(10,14,39,0.7);
      backdrop-filter: blur(12px);
      border-radius: var(--radius-badge);
      padding: 16px;
      border: 1px solid rgba(255,255,255,0.1);
      display: flex;
      align-items: center;
      gap: 14px;
      animation: float 4s ease-in-out infinite;
    }
    @keyframes float {
      0% { transform: translateY(0); }
      50% { transform: translateY(-8px); }
      100% { transform: translateY(0); }
    }
    .badge-number {
      font-size: 28px;
      font-weight: 800;
      color: var(--cyan-neon);
    }

    section {
      padding: 80px 0;
    }

    h2 {
      font-size: 26px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 16px;
    }

    /* 指标看板 */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .metric-card {
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      border-radius: var(--radius-card);
      padding: 24px;
      border: 1px solid transparent;
      transition: 0.2s;
    }
    .metric-card:hover {
      border-color: var(--electric-purple);
      box-shadow: var(--shadow-card);
    }
    .metric-icon {
      font-size: 28px;
      color: var(--cyan-neon);
      margin-bottom: 8px;
    }
    .metric-value {
      font-size: 36px;
      font-weight: 800;
      color: var(--cyan-neon);
    }

    /* 服务矩阵 2x3 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: var(--card-bg);
      backdrop-filter: blur(12px);
      border-radius: var(--radius-card);
      padding: 28px;
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .service-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 12px 28px rgba(108,60,250,0.3);
    }
    .service-icon {
      width: 64px;
      height: 64px;
      background: linear-gradient(135deg, #6C3CFA, #00F0FF);
      border-radius: 20px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 28px;
      color: white;
      margin-bottom: 18px;
    }

    /* 对比 */
    .comparison-row {
      display: flex;
      gap: 24px;
      flex-wrap: wrap;
    }
    .compare-card {
      flex: 1 1 280px;
      background: #F4F2FF;
      border-radius: var(--radius-card);
      padding: 28px;
      color: #1a1a2e;
    }
    .compare-card.aggame {
      background: linear-gradient(135deg, #1E1035, #0A0E27);
      border: 2px solid var(--electric-purple);
      color: white;
    }

    /* FAQ */
    .faq-item {
      border-bottom: 1px solid rgba(255,255,255,0.1);
      padding: 18px 0;
    }
    .faq-question {
      font-weight: 600;
      color: white;
      display: flex;
      justify-content: space-between;
      cursor: pointer;
    }

    /* 表单 */
    .contact-section {
      background: linear-gradient(45deg, #6C3CFA, #0A0E27);
      border-radius: 32px;
      padding: 48px;
    }
    .input-dark {
      background: rgba(0,0,0,0.3);
      border: 1px solid rgba(255,255,255,0.2);
      color: white;
      border-radius: 8px;
    }
    .input-dark:focus {
      border-color: var(--cyan-neon);
      box-shadow: 0 0 10px var(--cyan-neon);
    }

    footer {
      background: #0A0E27;
      padding: 40px 0 20px;
      color: #666688;
    }

    @media (max-width: 1024px) {
      .metrics-grid { grid-template-columns: repeat(2,1fr); }
      .services-grid { grid-template-columns: repeat(2,1fr); }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hamburger { display: block; }
      .hero-content { flex-direction: column; }
      .comparison-row { flex-direction: column; }
    }
    @media (max-width: 520px) {
      .metrics-grid { grid-template-columns: 1fr; }
      .services-grid { grid-template-columns: 1fr; }
    }