:root { --navy: #0f2236; --green: #0f8a63; --muted: #4b5b6e; --line: #dbe3ee; --soft: #f4f8fb; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: 'DM Sans', system-ui, sans-serif; color: var(--navy); background: #fff; line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: var(--green); }
.top { position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.top-in { max-width: 62rem; margin: 0 auto; padding: .75rem 1.25rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.top img { height: 2.75rem; width: auto; display: block; }
.back { display: inline-flex; align-items: center; min-height: 44px; padding: 0 1rem; border: 1px solid var(--line); border-radius: .5rem; text-decoration: none; font-weight: 600; font-size: .92rem; color: var(--navy); }
.back:hover { border-color: var(--green); color: var(--green); }
.draft-banner { background: #fff4cf; border-bottom: 2px solid #f2c744; color: #5a4500; padding: .9rem 1.25rem; font-size: .92rem; text-align: center; line-height: 1.5; }
main { max-width: 46rem; margin: 0 auto; padding: 2.5rem 1.25rem 4rem; }
.kicker { color: var(--green); font-weight: 700; font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; margin: 0; }
h1 { font-family: 'Space Grotesk', sans-serif; font-size: clamp(2rem, 5vw, 2.8rem); line-height: 1.1; margin: .4rem 0 .5rem; }
.updated { color: var(--muted); font-size: .92rem; margin: 0 0 2rem; }
h2 { font-family: 'Space Grotesk', sans-serif; font-size: 1.4rem; line-height: 1.25; margin: 2.5rem 0 .6rem; scroll-margin-top: 5rem; }
h3 { font-size: 1.05rem; margin: 1.4rem 0 .3rem; }
p, li { color: #2b3b4d; }
ul, ol { padding-left: 1.3rem; }
li { margin: .3rem 0; }
mark.todo { background: #fff0a6; color: #5a4500; padding: .05rem .35rem; border-radius: .3rem; font-weight: 600; }
table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: .95rem; }
th, td { text-align: left; padding: .65rem .75rem; border: 1px solid var(--line); vertical-align: top; }
th { background: var(--soft); font-weight: 700; }
.toc { background: var(--soft); border: 1px solid var(--line); border-radius: .75rem; padding: 1rem 1.25rem; margin: 0 0 1rem; }
.toc ol { margin: .4rem 0 0; columns: 2; column-gap: 2rem; }
.toc a { text-decoration: none; }
@media (max-width: 600px) { .toc ol { columns: 1; } th, td { padding: .5rem; } }
footer { border-top: 1px solid var(--line); padding: 1.5rem 1.25rem 2.5rem; text-align: center; font-size: .9rem; color: var(--muted); }
footer a { margin: 0 .6rem; }