/* roulang page: index */
:root {
      --deep-space: #0A0A14;
      --dark-purple-bg: #0E0E1F;
      --thunder-purple: #7B2FFF;
      --flame-orange: #FF5E1A;
      --arena-gold: #F0B90B;
      --success-green: #00E676;
      --card-surface: rgba(20, 20, 40, 0.6);
      --card-border: rgba(123, 47, 255, 0.25);
      --text-primary: #E8E6F0;
      --text-secondary: #9B97B0;
      --white: #ffffff;
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --radius-pill: 50px;
      --shadow-card: 0 8px 32px rgba(123, 47, 255, 0.15);
      --shadow-card-hover: 0 12px 40px rgba(255, 94, 26, 0.25);
      --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    body {
      font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      background-color: var(--deep-space);
      color: var(--text-primary);
      line-height: 1.5;
      -webkit-font-smoothing: antialiased;
      scroll-behavior: smooth;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 导航毛玻璃效果 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      background: rgba(10, 10, 20, 0.75);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(123, 47, 255, 0.25);
      transition: background 0.3s ease;
    }

    .navbar.scrolled {
      background: rgba(10, 10, 20, 0.92);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 8px;
      text-decoration: none;
      color: var(--white);
      font-weight: 700;
      font-size: 1.5rem;
      letter-spacing: -0.3px;
    }

    .logo-icon {
      font-size: 1.8rem;
      color: var(--thunder-purple);
      filter: drop-shadow(0 0 6px rgba(123, 47, 255, 0.7));
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
    }

    .nav-link {
      color: var(--text-secondary);
      text-decoration: none;
      font-weight: 500;
      font-size: 1rem;
      transition: var(--transition-smooth);
      position: relative;
    }

    .nav-link:hover,
    .nav-link.active {
      color: var(--white);
    }

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--thunder-purple);
      transition: width 0.3s ease;
    }

    .nav-link:hover::after,
    .nav-link.active::after {
      width: 100%;
    }

    .btn-primary {
      background: var(--thunder-purple);
      color: var(--white);
      border: none;
      padding: 10px 24px;
      border-radius: var(--radius-pill);
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      transition: var(--transition-smooth);
      box-shadow: 0 0 12px rgba(123, 47, 255, 0.4);
      text-decoration: none;
      display: inline-block;
    }

    .btn-primary:hover {
      background: var(--flame-orange);
      box-shadow: 0 0 24px rgba(255, 94, 26, 0.6);
      transform: scale(1.03);
    }

    .btn-outline {
      background: transparent;
      border: 1.5px solid var(--flame-orange);
      color: var(--flame-orange);
      padding: 10px 24px;
      border-radius: var(--radius-pill);
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      transition: var(--transition-smooth);
      text-decoration: none;
      display: inline-block;
    }

    .btn-outline:hover {
      background: rgba(255, 94, 26, 0.15);
      border-color: var(--flame-orange);
      box-shadow: 0 0 16px rgba(255, 94, 26, 0.4);
    }

    .hamburger {
      display: none;
      flex-direction: column;
      cursor: pointer;
      gap: 5px;
      z-index: 1001;
    }

    .hamburger span {
      width: 28px;
      height: 2.5px;
      background: var(--white);
      border-radius: 4px;
      transition: var(--transition-smooth);
    }

    /* Hero */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      background: radial-gradient(circle at 20% 30%, rgba(123, 47, 255, 0.25) 0%, transparent 50%),
                  radial-gradient(circle at 80% 70%, rgba(255, 94, 26, 0.2) 0%, transparent 50%),
                  var(--deep-space);
      position: relative;
      overflow: hidden;
    }

    .hero-content {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 40px;
      width: 100%;
    }

    .hero-text {
      flex: 1;
    }

    .hero h1 {
      font-size: 3rem;
      font-weight: 700;
      line-height: 1.2;
      letter-spacing: -0.5px;
      background: linear-gradient(135deg, var(--thunder-purple) 0%, var(--flame-orange) 80%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      margin-bottom: 16px;
    }

    .hero-subtitle {
      font-size: 1.125rem;
      color: var(--text-secondary);
      margin-bottom: 32px;
      max-width: 500px;
    }

    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    .hero-visual {
      flex: 1;
      display: flex;
      justify-content: center;
      align-items: center;
    }

    .hero-visual img {
      max-width: 100%;
      height: auto;
      filter: drop-shadow(0 0 30px rgba(123, 47, 255, 0.5));
      animation: float 6s ease-in-out infinite;
    }

    @keyframes float {
      0% { transform: translateY(0px); }
      50% { transform: translateY(-15px); }
      100% { transform: translateY(0px); }
    }

    .scroll-indicator {
      position: absolute;
      bottom: 30px;
      left: 50%;
      transform: translateX(-50%);
      color: var(--text-secondary);
      font-size: 2rem;
      animation: pulse 2s infinite;
    }

    @keyframes pulse {
      0% { opacity: 0.5; transform: translateX(-50%) translateY(0); }
      50% { opacity: 1; transform: translateX(-50%) translateY(8px); }
      100% { opacity: 0.5; transform: translateX(-50%) translateY(0); }
    }

    /* 板块通用 */
    section {
      padding: 100px 0;
    }

    .section-title {
      font-size: 2.25rem;
      font-weight: 600;
      margin-bottom: 16px;
      color: var(--white);
      text-align: center;
    }

    .section-desc {
      color: var(--text-secondary);
      text-align: center;
      max-width: 700px;
      margin: 0 auto 48px;
    }

    /* 核心数据带 */
    .stats-band {
      background: var(--dark-purple-bg);
      padding: 60px 0;
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
      text-align: center;
    }

    .stat-item .stat-number {
      font-family: 'Rajdhani', sans-serif;
      font-size: 2.8rem;
      font-weight: 700;
      color: var(--arena-gold);
      line-height: 1.2;
    }

    .stat-label {
      color: var(--text-secondary);
      font-size: 1rem;
    }

    /* 功能矩阵卡片 */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .feature-card {
      background: var(--card-surface);
      backdrop-filter: blur(20px);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-lg);
      padding: 32px;
      transition: var(--transition-smooth);
      box-shadow: var(--shadow-card);
    }

    .feature-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-card-hover);
      border-color: rgba(123, 47, 255, 0.6);
    }

    .feature-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      border-radius: var(--radius-md);
      margin-bottom: 20px;
    }

    .feature-card h3 {
      font-size: 1.35rem;
      font-weight: 600;
      margin-bottom: 12px;
      color: #d9d0ff;
    }

    .feature-card p {
      color: var(--text-secondary);
      font-size: 0.95rem;
    }

    /* 场景切换 */
    .scenes-tabs {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }

    .scene-tab {
      padding: 8px 24px;
      border-radius: var(--radius-pill);
      background: transparent;
      border: 1px solid var(--text-secondary);
      color: var(--text-secondary);
      cursor: pointer;
      transition: var(--transition-smooth);
    }

    .scene-tab.active {
      background: var(--thunder-purple);
      color: white;
      border-color: var(--thunder-purple);
    }

    .scene-panel {
      display: flex;
      align-items: center;
      gap: 32px;
      background: var(--card-surface);
      backdrop-filter: blur(20px);
      border-radius: var(--radius-lg);
      padding: 32px;
      border: 1px solid var(--card-border);
    }

    .scene-panel img {
      width: 50%;
      border-radius: var(--radius-md);
    }

    /* 技术架构 */
    .tech-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .tech-specs li {
      display: flex;
      justify-content: space-between;
      padding: 12px 0;
      border-bottom: 1px solid rgba(123,47,255,0.2);
      color: var(--text-secondary);
    }

    .tech-value {
      color: var(--flame-orange);
      font-weight: 600;
    }

    /* 合作墙 */
    .partner-logos {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 40px;
      margin: 32px 0;
    }

    .partner-logos img {
      height: 48px;
      filter: grayscale(1);
      opacity: 0.7;
      transition: var(--transition-smooth);
    }

    .partner-logos img:hover {
      filter: grayscale(0);
      opacity: 1;
    }

    /* FAQ */
    .faq-item {
      background: rgba(20, 20, 40, 0.5);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      border-left: 3px solid transparent;
      transition: var(--transition-smooth);
    }

    .faq-item.active {
      border-left-color: var(--thunder-purple);
      background: rgba(123, 47, 255, 0.1);
    }

    .faq-question {
      padding: 20px 24px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
      color: var(--text-secondary);
      padding: 0 24px;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding-bottom: 20px;
    }

    /* 终极CTA */
    .cta-banner {
      background: linear-gradient(135deg, #1a1035, #2a1040);
      text-align: center;
      padding: 80px 24px;
      border-radius: var(--radius-lg);
      margin: 0 24px;
    }

    /* 页脚 */
    .footer {
      background: #06060e;
      padding: 60px 0 30px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: repeat(4,1fr);
      gap: 32px;
    }

    @media (max-width: 1024px) {
      .features-grid { grid-template-columns: repeat(2,1fr); }
      .tech-grid { grid-template-columns: 1fr; }
    }

    @media (max-width: 768px) {
      .hamburger { display: flex; }
      .nav-menu {
        position: fixed; top:0; right:-100%; width:70%; height:100vh;
        background: rgba(10,10,20,0.95); backdrop-filter: blur(20px);
        flex-direction: column; padding: 100px 32px; transition: 0.3s;
      }
      .nav-menu.active { right:0; }
      .hero-content { flex-direction: column; }
      .hero h1 { font-size: 2.2rem; }
      .stats-grid, .features-grid { grid-template-columns: 1fr; }
      .scene-panel { flex-direction: column; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }