:root {
	--bg: #0e1116;
	--surface: #161b22;
	--surface-2: #1d242d;
	--border: #2a313a;
	--text: #e6edf3;
	--muted: #8b949e;
	--accent: #58a6ff;
	--success: #3fb950;
	--danger: #f85149;
	--radius: 8px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.topbar { display: flex; align-items: center; justify-content: space-between; padding: 1rem 2rem; border-bottom: 1px solid var(--border); background: var(--surface); }
.topbar nav { display: flex; align-items: center; gap: 1.25rem; }
.brand { font-weight: 700; font-size: 1.05rem; color: var(--text); }
main { max-width: 960px; margin: 2rem auto; padding: 0 1.5rem; }
footer { max-width: 960px; margin: 3rem auto 1rem; padding: 0 1.5rem; color: var(--muted); }
.hero { padding: 2rem 0; }
.hero h1 { font-size: 2.25rem; margin-bottom: 0.5rem; }
.lead { color: var(--muted); max-width: 60ch; line-height: 1.55; }
.cta-large { display: inline-block; margin: 1.25rem 0 0.5rem; padding: 0.75rem 1.4rem; background: var(--accent); color: #0d1117; border-radius: var(--radius); font-weight: 600; }
.cta { padding: 0.4rem 0.9rem; background: var(--accent); color: #0d1117; border-radius: var(--radius); font-weight: 600; }
.cta:hover { text-decoration: none; opacity: 0.9; }
.explainer { margin-top: 2.5rem; padding: 1.5rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.explainer ol { line-height: 1.65; }
.card { padding: 1.5rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 1.5rem; }
.card h1 { margin-top: 0; }
.metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 1rem; margin-top: 1rem; }
.metric { padding: 1rem; background: var(--surface-2); border-radius: var(--radius); display: flex; flex-direction: column; gap: 0.25rem; }
.metric .label { color: var(--muted); font-size: 0.85rem; }
.metric .value { font-size: 1.5rem; font-weight: 600; }
table { width: 100%; border-collapse: collapse; margin-top: 0.5rem; }
th, td { text-align: left; padding: 0.6rem 0.75rem; border-bottom: 1px solid var(--border); font-size: 0.92rem; }
th { color: var(--muted); font-weight: 500; }
.form-card { max-width: 380px; margin: 2.5rem auto; padding: 2rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.form-card h1 { margin-top: 0; }
form label { display: block; margin: 0.75rem 0; font-size: 0.92rem; color: var(--muted); }
form input { display: block; width: 100%; margin-top: 0.35rem; padding: 0.55rem 0.7rem; background: var(--surface-2); color: var(--text); border: 1px solid var(--border); border-radius: var(--radius); font-size: 0.95rem; }
form input:focus { border-color: var(--accent); outline: none; }
button { padding: 0.55rem 1.1rem; background: var(--accent); color: #0d1117; border: 0; border-radius: var(--radius); font-weight: 600; cursor: pointer; }
button:hover { opacity: 0.92; }
button.link { background: transparent; color: var(--accent); padding: 0; font-weight: 400; }
button.link.danger { color: var(--danger); }
.inline { display: inline; }
.alert { background: rgba(248, 81, 73, 0.1); border: 1px solid rgba(248, 81, 73, 0.4); padding: 0.75rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; color: #ffb4af; }
.success { background: rgba(63, 185, 80, 0.1); border: 1px solid rgba(63, 185, 80, 0.4); padding: 0.75rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; color: #7ee787; }
.muted { color: var(--muted); }
code { background: var(--surface-2); padding: 0.1rem 0.35rem; border-radius: 4px; font-size: 0.9em; }