:root {
      --bg: #0a0a0f;
      --bg-2: #111118;
      --bg-card: #16161f;
      --bg-card-hover: #1e1e2a;
      --border: rgba(255,255,255,0.07);
      --border-hover: rgba(99,102,241,0.4);
      --accent: #6366f1;
      --accent-2: #22d3ee;
      --accent-glow: rgba(99,102,241,0.12);
      --text: #e2e2ef;
      --text-muted: #7b7b9a;
      --text-dim: #4a4a6a;
      --radius: 14px;
      --radius-sm: 8px;
      --font-display: 'Syne', sans-serif;
      --font-mono: 'Space Mono', monospace;
      --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body { background: var(--bg); color: var(--text); font-family: var(--font-display); line-height: 1.7; }
    a { text-decoration: none; color: inherit; }
    ::-webkit-scrollbar { width: 6px; }
    ::-webkit-scrollbar-track { background: var(--bg); }
    ::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

    /* NAV */
    .nav {
      position: sticky; top: 0; z-index: 100;
      background: rgba(10,10,15,0.9); backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border);
      padding: 1rem 2rem;
      display: flex; align-items: center; justify-content: space-between;
    }
    .nav-logo {
      font-family: var(--font-mono); font-size: 1.1rem; font-weight: 700;
      color: var(--accent); border: 2px solid var(--accent);
      width: 38px; height: 38px; display: flex; align-items: center; justify-content: center;
      border-radius: 9px; transition: var(--transition);
    }
    .nav-logo:hover { background: var(--accent); color: white; }
    .nav-links { display: flex; gap: 1.5rem; }
    .nav-links a {
      font-size: 0.85rem; font-weight: 600; color: var(--text-muted);
      transition: var(--transition); letter-spacing: 0.04em;
    }
    .nav-links a:hover, .nav-links a.active { color: var(--accent); }

    /* HERO STRIP */
    .page-hero {
      background: var(--bg-2);
      border-bottom: 1px solid var(--border);
      padding: 3.5rem 2rem 3rem;
      position: relative; overflow: hidden;
    }
    .page-hero::before {
      content: ''; position: absolute; inset: 0;
      background: radial-gradient(ellipse at 20% 50%, rgba(99,102,241,0.08) 0%, transparent 70%);
      pointer-events: none;
    }
    .page-hero-inner { max-width: 1100px; margin: 0 auto; position: relative; }
    .page-tag {
      font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.15em;
      color: var(--accent); text-transform: uppercase; margin-bottom: 0.75rem;
    }
    .page-title {
      font-size: clamp(2.2rem, 6vw, 4rem); font-weight: 800;
      color: white; letter-spacing: -0.02em; line-height: 1.1; margin-bottom: 0.75rem;
    }
    .page-title span {
      background: linear-gradient(135deg, var(--accent), var(--accent-2));
      -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    }
    .page-desc { color: var(--text-muted); font-size: 1rem; max-width: 500px; }
    .page-meta {
      display: flex; gap: 1.5rem; margin-top: 1.5rem; flex-wrap: wrap;
    }
    .meta-pill {
      display: flex; align-items: center; gap: 0.5rem;
      background: var(--accent-glow); border: 1px solid rgba(99,102,241,0.2);
      color: var(--accent); font-family: var(--font-mono); font-size: 0.78rem;
      padding: 0.35rem 0.9rem; border-radius: 999px;
    }

    /* MAIN CONTENT */
    .content { max-width: 1100px; margin: 0 auto; padding: 3rem 2rem 5rem; }

    /* DAY SECTION */
    .day-section { margin-bottom: 2.5rem; }
    .day-header {
      display: flex; align-items: center; gap: 1rem;
      margin-bottom: 1.25rem; padding-bottom: 0.75rem;
      border-bottom: 1px solid var(--border);
    }
    .day-num {
      font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em;
      color: var(--accent); text-transform: uppercase;
      background: var(--accent-glow); border: 1px solid rgba(99,102,241,0.2);
      padding: 0.3rem 0.75rem; border-radius: 999px;
    }
    .day-title { font-size: 1.15rem; font-weight: 800; color: white; }
    .day-subtitle { font-size: 0.85rem; color: var(--text-muted); margin-left: auto; font-family: var(--font-mono); }

    /* SUB GROUP */
    .sub-group { margin-bottom: 1.5rem; }
    .sub-group-label {
      font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em;
      color: var(--text-muted); text-transform: uppercase;
      margin-bottom: 0.75rem; padding-left: 0.25rem;
    }

    /* LINKS GRID */
    .links-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
      gap: 0.75rem;
    }
    .link-card {
      display: flex; align-items: center; gap: 0.75rem;
      background: var(--bg-card); border: 1px solid var(--border);
      border-radius: var(--radius-sm); padding: 0.85rem 1rem;
      transition: var(--transition); cursor: pointer;
      position: relative; overflow: hidden;
    }
    .link-card::before {
      content: ''; position: absolute; left: 0; top: 0; bottom: 0;
      width: 3px; background: var(--accent); transform: scaleY(0);
      transition: var(--transition); transform-origin: bottom;
    }
    .link-card:hover {
      background: var(--bg-card-hover);
      border-color: var(--border-hover);
      transform: translateX(4px);
    }
    .link-card:hover::before { transform: scaleY(1); }
    .link-icon {
      font-size: 1rem; flex-shrink: 0;
      width: 32px; height: 32px; display: flex; align-items: center; justify-content: center;
      background: var(--accent-glow); border-radius: 7px;
    }
    .link-info { flex: 1; min-width: 0; }
    .link-name {
      font-size: 0.88rem; font-weight: 700; color: var(--text);
      white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
      transition: var(--transition);
    }
    .link-card:hover .link-name { color: var(--accent); }
    .link-type { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-dim); }
    .link-arrow { color: var(--text-dim); font-size: 0.8rem; transition: var(--transition); }
    .link-card:hover .link-arrow { color: var(--accent); transform: translateX(2px); }

    /* FOOTER */
    .footer {
      background: var(--bg-2); border-top: 1px solid var(--border);
      padding: 2rem; text-align: center;
    }
    .footer-links { display: flex; gap: 1.5rem; justify-content: center; flex-wrap: wrap; margin-bottom: 0.75rem; }
    .footer-links a { color: var(--text-muted); font-size: 0.85rem; font-weight: 600; transition: var(--transition); }
    .footer-links a:hover { color: var(--accent); }
    .footer-copy { color: var(--text-dim); font-family: var(--font-mono); font-size: 0.78rem; }

    /* REVEAL */
    .reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
    .reveal.visible { opacity: 1; transform: none; }

    @media (max-width: 600px) {
    .nav-links { display: flex; overflow-x: scroll; scrollbar-width: none; -ms-overflow-style: none;                }
    .links-grid { grid-template-columns: 1fr 1fr; }
    .day-subtitle { display: none; }
    }
    @media (max-width: 400px) {
      .links-grid { grid-template-columns: 1fr; }
    }