/* roulang page: index */
:root {
      --bg-base: #0a0b0e;
      --bg-panel: #12151b;
      --bg-card: #181c24;
      --primary: #10b981;
      --primary-glow: rgba(16, 185, 129, 0.18);
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-active: rgba(16, 185, 129, 0.4);
      --font-mono: ui-monospace, "JetBrains Mono", SFMono-Regular, Menlo, monospace;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .font-mono-code {
      font-family: var(--font-mono);
    }
    .bg-panel {
      background-color: var(--bg-panel);
    }
    .bg-card-tech {
      background-color: var(--bg-card);
      border: 1px solid var(--border-subtle);
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .bg-card-tech:hover {
      border-color: var(--border-active);
      box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
      transform: translateY(-2px);
    }
    .badge-tag {
      background: rgba(16, 185, 129, 0.1);
      border: 1px solid rgba(16, 185, 129, 0.25);
      color: var(--primary);
    }
    .gradient-hero-overlay {
      background: linear-gradient(180deg, rgba(10, 11, 14, 0.75) 0%, rgba(10, 11, 14, 0.98) 100%);
    }
    .glass-nav {
      background: rgba(10, 11, 14, 0.88);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-subtle);
    }
    .pulse-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #10b981;
      box-shadow: 0 0 10px #10b981;
      animation: pulse 1.8s infinite;
    }
    @keyframes pulse {
      0% { transform: scale(0.95); opacity: 0.8; }
      50% { transform: scale(1.25); opacity: 1; }
      100% { transform: scale(0.95); opacity: 0.8; }
    }

/* roulang page: category2 */
:root {
      --bg-base: #0a0b0e;
      --bg-panel: #12151b;
      --bg-card: #181c24;
      --primary: #10b981;
      --primary-glow: rgba(16, 185, 129, 0.18);
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-active: rgba(16, 185, 129, 0.4);
      --font-mono: ui-monospace, "JetBrains Mono", SFMono-Regular, Menlo, monospace;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .font-mono-code {
      font-family: var(--font-mono);
    }
    .bg-card-tech {
      background-color: var(--bg-card);
      border: 1px solid var(--border-subtle);
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .bg-card-tech:hover {
      border-color: var(--border-active);
      box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
      transform: translateY(-2px);
    }
    .badge-tag {
      background: rgba(16, 185, 129, 0.1);
      border: 1px solid rgba(16, 185, 129, 0.25);
      color: var(--primary);
    }
    .glass-nav {
      background: rgba(10, 11, 14, 0.88);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-subtle);
    }
    .code-box {
      background: #0d1017;
      border: 1px solid rgba(255, 255, 255, 0.07);
    }

/* roulang page: category1 */
:root {
      --bg-base: #0a0b0e;
      --bg-panel: #12151b;
      --bg-card: #181c24;
      --primary: #10b981;
      --primary-glow: rgba(16, 185, 129, 0.18);
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-active: rgba(16, 185, 129, 0.4);
      --font-mono: ui-monospace, "JetBrains Mono", SFMono-Regular, Menlo, monospace;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .bg-card-tech {
      background-color: var(--bg-card);
      border: 1px solid var(--border-subtle);
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .bg-card-tech:hover {
      border-color: var(--border-active);
      box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
      transform: translateY(-2px);
    }
    .badge-tag {
      background: rgba(16, 185, 129, 0.1);
      border: 1px solid rgba(16, 185, 129, 0.25);
      color: var(--primary);
    }
    .glass-nav {
      background: rgba(10, 11, 14, 0.88);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-subtle);
    }
    .font-mono-code {
      font-family: var(--font-mono);
    }
    .filter-btn-active {
      background-color: rgba(16, 185, 129, 0.15);
      border-color: rgba(16, 185, 129, 0.5);
      color: #10b981;
    }

/* roulang page: category3 */
:root {
            --bg-base: #0a0b0e;
            --bg-panel: #12151b;
            --bg-card: #181c24;
            --primary: #10b981;
            --primary-glow: rgba(16, 185, 129, 0.18);
            --text-main: #f8fafc;
            --text-muted: #94a3b8;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-active: rgba(16, 185, 129, 0.4);
            --font-mono: ui-monospace, "JetBrains Mono", SFMono-Regular, Menlo, monospace;
        }
        body {
            background-color: var(--bg-base);
            color: var(--text-main);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }
        .font-mono-code {
            font-family: var(--font-mono);
        }
        .bg-card-tech {
            background-color: var(--bg-card);
            border: 1px solid var(--border-subtle);
            transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .bg-card-tech:hover {
            border-color: var(--border-active);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
            transform: translateY(-2px);
        }
        .badge-tag {
            background: rgba(16, 185, 129, 0.1);
            border: 1px solid rgba(16, 185, 129, 0.25);
            color: var(--primary);
        }
        .glass-nav {
            background: rgba(10, 11, 14, 0.88);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-subtle);
        }
        .gradient-filter {
            background: linear-gradient(180deg, rgba(18, 21, 27, 0.9) 0%, rgba(10, 11, 14, 0.95) 100%);
        }

/* roulang page: category4 */
:root {
      --bg-base: #0a0b0e;
      --bg-panel: #12151b;
      --bg-card: #181c24;
      --primary: #10b981;
      --primary-glow: rgba(16, 185, 129, 0.18);
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-active: rgba(16, 185, 129, 0.4);
      --font-mono: ui-monospace, "JetBrains Mono", SFMono-Regular, Menlo, monospace;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .font-mono-code {
      font-family: var(--font-mono);
    }
    .bg-card-tech {
      background-color: var(--bg-card);
      border: 1px solid var(--border-subtle);
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .bg-card-tech:hover {
      border-color: var(--border-active);
      box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
      transform: translateY(-2px);
    }
    .badge-tag {
      background: rgba(16, 185, 129, 0.1);
      border: 1px solid rgba(16, 185, 129, 0.25);
      color: var(--primary);
    }
    .glass-nav {
      background: rgba(10, 11, 14, 0.88);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-subtle);
    }
    .hero-bg-cover {
      background-image: linear-gradient(180deg, rgba(10, 11, 14, 0.85) 0%, rgba(10, 11, 14, 0.98) 100%), url('/assets/images/3887658fde12c905.webp');
      background-size: cover;
      background-position: center;
    }