/* roulang page: index */
:root {
      --bg-dark: #0F1115;
      --bg-card: #161920;
      --color-primary: #00E5A3;
      --color-accent: #635BFF;
      --color-gold: #E2B880;
      --color-text-main: #FFFFFF;
      --color-text-sub: #A0A6B5;
      --color-border: rgba(255, 255, 255, 0.08);
    }
    html {
      scroll-behavior: smooth;
      background-color: var(--bg-dark);
      color: var(--color-text-main);
    }
    body {
      overflow-x: hidden;
      font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
    }
    .hero-skew-band {
      clip-path: polygon(0 0, 100% 0, 100% calc(100% - 4.5vw), 0 100%);
    }
    .band-skew-reverse {
      clip-path: polygon(0 4vw, 100% 0, 100% 100%, 0 calc(100% - 4vw));
    }
    .card-glass {
      background: rgba(22, 25, 32, 0.7);
      backdrop-filter: blur(12px);
      border: 1px solid var(--color-border);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card-glass:hover {
      border-color: rgba(0, 229, 163, 0.35);
      transform: translateY(-4px);
      box-shadow: 0 16px 32px -8px rgba(0, 229, 163, 0.12);
    }
    .glow-border {
      position: relative;
    }
    .glow-border::after {
      content: '';
      position: absolute;
      inset: -1px;
      border-radius: inherit;
      padding: 1px;
      background: linear-gradient(135deg, rgba(0,229,163,0.4), rgba(99,91,255,0.2), transparent 70%);
      -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
      mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
      -webkit-mask-composite: xor;
      mask-composite: exclude;
      pointer-events: none;
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    summary {
      list-style: none;
    }
    /* 移动端无障碍点击热区 */
    a, button {
      min-height: 44px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }