:root { --bg: #f3f1ec; --card: #fff; --ink: #15171c; --mute: #6f717a; --line: #e4e1da; --accent: #3d43d6; --good-soft: #e8f5ee; font: 17px/1.65 Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; color: var(--ink); -webkit-font-smoothing: antialiased; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); }
a { color: var(--accent); }
.top { background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.top-in { display: flex; align-items: center; justify-content: space-between; gap: 16px; max-width: 1120px; margin: 0 auto; padding: 0 24px; height: 58px; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 17px; letter-spacing: -0.02em; color: var(--ink); text-decoration: none; }
nav { display: flex; gap: 22px; font-size: 15px; }
nav a { color: var(--mute); text-decoration: none; font-weight: 500; }
nav a:hover, nav a.on { color: var(--ink); }
main.narrow { max-width: 760px; margin: 0 auto; padding: 40px 24px 24px; }
footer { color: var(--mute); font-size: 13px; text-align: center; padding: 24px; }
.crumb { font-size: 14px; margin: 0 0 8px; }
.crumb a { color: var(--mute); text-decoration: none; }
.prose h1 { font-size: 36px; line-height: 1.15; letter-spacing: -0.03em; margin: 0 0 12px; }
.prose h2 { font-size: 22px; letter-spacing: -0.015em; margin: 40px 0 8px; }
.prose p, .prose li { color: #2a2d35; }
.prose .lede { font-size: 19px; color: var(--mute); margin: 0 0 28px; }
.prose table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 15px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; font-variant-numeric: tabular-nums; }
.prose th, .prose td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); }
.prose tr:last-child td { border-bottom: 0; }
.prose th { font-size: 13px; color: var(--mute); font-weight: 600; }
.prose ul, .prose ol { padding-left: 22px; }
.prose li { margin: 6px 0; }
.cta-box { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; background: var(--ink); color: #fff; border-radius: 12px; padding: 24px; margin: 40px 0 0; }
.cta-box b { font-size: 19px; }
.cta-box p { margin: 4px 0 0; color: rgba(255, 255, 255, 0.65); font-size: 15px; }
.btn { background: var(--accent); color: #fff; text-decoration: none; padding: 12px 20px; border-radius: 10px; font-weight: 600; font-size: 16px; white-space: nowrap; }
.more { margin-top: 36px; }
.more h2 { font-size: 16px; }
.more ul { padding-left: 20px; }
.post-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.post-list a { display: block; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 20px 22px; text-decoration: none; color: var(--ink); }
.post-list a:hover { border-color: #c9c6be; }
.post-list b { display: block; font-size: 19px; letter-spacing: -0.01em; line-height: 1.3; }
.post-list span { display: block; color: var(--mute); font-size: 15px; margin-top: 4px; }
@media (max-width: 600px) { .prose h1 { font-size: 28px; } main.narrow { padding: 24px 16px; } .top-in { padding: 0 14px; } }