:root {
    --bg: #0e1116;
    --panel: #161b23;
    --text: #e8ecf1;
    --muted: #9aa5b1;
    --accent: #f5a623;
    --accent-dark: #d48806;
    --border: #242c37;
    --max: 960px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

header {
    border-bottom: 1px solid var(--border);
    padding: 18px 24px;
}
header .wrap {
    max-width: var(--max); margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
}
.logo { font-size: 1.35rem; font-weight: 800; letter-spacing: -0.02em; color: var(--text); }
.logo span { color: var(--accent); }
nav a { color: var(--muted); margin-left: 22px; font-size: 0.95rem; }
nav a:hover { color: var(--text); text-decoration: none; }

main { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

.hero { padding: 96px 0 64px; text-align: center; }
.hero h1 {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 800; letter-spacing: -0.03em; line-height: 1.15;
    max-width: 780px; margin: 0 auto;
}
.hero h1 em { color: var(--accent); font-style: normal; }
.hero p.sub {
    color: var(--muted); font-size: 1.2rem; max-width: 640px; margin: 22px auto 0;
}
.cta {
    display: inline-block; margin-top: 36px;
    background: var(--accent); color: #14100a;
    font-weight: 700; font-size: 1.05rem;
    padding: 14px 34px; border-radius: 8px;
}
.cta:hover { background: var(--accent-dark); text-decoration: none; }
.hero .note { color: var(--muted); font-size: 0.85rem; margin-top: 14px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; padding: 40px 0 72px; }
.card {
    background: var(--panel); border: 1px solid var(--border);
    border-radius: 12px; padding: 26px;
}
.card h3 { font-size: 1.05rem; margin-bottom: 10px; }
.card h3 .n { color: var(--accent); margin-right: 8px; }
.card p { color: var(--muted); font-size: 0.95rem; }

.how { padding: 24px 0 80px; }
.how h2 { font-size: 1.6rem; letter-spacing: -0.02em; margin-bottom: 12px; }
.how p { color: var(--muted); max-width: 720px; }
.how .example {
    margin-top: 28px; background: var(--panel); border: 1px solid var(--border);
    border-radius: 12px; padding: 26px; font-size: 0.98rem;
}
.example .q { color: var(--muted); margin-bottom: 14px; }
.example table { width: 100%; border-collapse: collapse; }
.example td { padding: 8px 6px; border-top: 1px solid var(--border); }
.example td.pct { color: var(--accent); font-weight: 700; white-space: nowrap; }
.example td.cost { text-align: right; color: var(--muted); white-space: nowrap; }
.example .src { color: var(--muted); font-size: 0.8rem; margin-top: 14px; }

footer {
    border-top: 1px solid var(--border);
    padding: 28px 24px; color: var(--muted); font-size: 0.88rem;
}
footer .wrap {
    max-width: var(--max); margin: 0 auto;
    display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between;
}
footer a { color: var(--muted); margin-right: 18px; }

.doc { padding: 56px 0 80px; max-width: 760px; }
.doc h1 { font-size: 1.9rem; margin-bottom: 8px; letter-spacing: -0.02em; }
.doc .updated { color: var(--muted); font-size: 0.88rem; margin-bottom: 32px; }
.doc h2 { font-size: 1.15rem; margin: 30px 0 10px; }
.doc p, .doc li { color: var(--muted); font-size: 0.97rem; }
.doc ul { padding-left: 22px; margin: 10px 0; }