:root { color-scheme: light; --paper: #fff8ea; --ink: #503721; --muted: #796650; --line: #a9794b; --orange: #ff965b; }
* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: system-ui, -apple-system, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif; line-height: 1.8; }
header, main, footer { width: min(960px, calc(100% - 40px)); margin-inline: auto; }
header { padding: 22px 0; display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; border-bottom: 2px solid var(--line); }
.brand { font-weight: 800; font-size: 1.15rem; text-decoration: none; }
header span, .eyebrow { color: var(--muted); }
.hero { padding: 64px 0 42px; }
h1 { font-size: clamp(2.2rem, 6vw, 4rem); line-height: 1.3; margin: 10px 0 24px; letter-spacing: -.035em; }
h2 { font-size: 1.55rem; }
h3 { margin-top: 0; }
p { max-width: 72ch; }
a { color: var(--ink); text-underline-offset: 4px; }
a:focus-visible { outline: 3px solid var(--orange); outline-offset: 5px; border-radius: 4px; }
.notice { border-left: 5px solid var(--orange); padding: 12px 18px; background: #fff0d4; border-radius: 0 14px 14px 0; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
article, .paper { padding: 24px; border: 2px solid var(--line); border-radius: 24px; background: #fffdf6; }
.paper { margin-top: 30px; }
nav { display: flex; flex-wrap: wrap; gap: 22px; }
footer { color: var(--muted); font-size: .9rem; padding: 36px 0; }
.document { max-width: 820px; padding-block: 36px; }
.document h1 { font-size: 2.1rem; }
.document section { margin-block: 30px; }
li { margin-block: 8px; }
@media (max-width: 680px) { .cards { grid-template-columns: 1fr; } .hero { padding-top: 36px; } article, .paper { padding: 20px; } }