:root { --bg:#0b0e12; --fg:#e9eef5; --muted:#9fb0c3; --card:#111827; --line:#1f2937; --accent:#38bdf8; }
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--fg); font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica Neue, Arial, sans-serif; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 980px; margin: 0 auto; padding: 28px; }
header { display: flex; align-items: center; gap: 16px; }
header img { width: 56px; height: 56px; border-radius: 12px; object-fit: cover; border: 1px solid #1f2937; }
h1 { font-size: clamp(1.4rem, 3.5vw, 2rem); margin: 0; }
.tag { font-size: 0.85rem; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 14px; margin-top: 18px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 14px; }
.card h3 { margin: 0 0 6px; font-size: 1.1rem; }
.card p { margin: 0 0 12px; color: var(--muted); font-size: 0.95rem; }
.btnrow { display: flex; gap: 10px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 9px 12px; border-radius: 10px; background: var(--accent); color: white; font-weight: 600; border: none; }
.btn.secondary { background: #223046; }
.viewer { width: 100%; height: 520px; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; margin-top: 10px; }
footer { margin-top: 28px; color: var(--muted); font-size: 0.9rem; }
code { background: #0f1623; padding: 2px 6px; border-radius: 6px; }
@media (max-width: 640px) { .viewer { height: 420px; } }