:root { --paper: #fffdf9; --ink: #2b2a27; --mute: #6b675f; --line: #ece7dd; --soft: #f6f2ea; --mint: #41c9b4; --mint-ink: #1d7f70; }
* { box-sizing: border-box; }
html { background: var(--paper); }
body { margin: 0; color: var(--ink); font-family: "Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif; line-height: 1.8; font-size: 17px; }
header { border-bottom: 1px solid var(--line); background: #fff; }
.bar { max-width: 760px; margin: 0 auto; padding: 18px 20px; display: flex; align-items: baseline; justify-content: space-between; }
.wordmark { font-weight: 700; font-size: 1.15rem; color: var(--ink); text-decoration: none; }
.wordmark::after { content: "."; color: var(--mint); }
nav a { color: var(--mute); text-decoration: none; margin-left: 18px; font-size: 0.95rem; }
nav a:hover { color: var(--mint-ink); }
main { max-width: 760px; margin: 0 auto; padding: 48px 20px 64px; }
h1 { font-size: 2rem; line-height: 1.3; margin: 0 0 12px; }
h2 { font-size: 1.2rem; margin: 40px 0 10px; }
p.lead { font-size: 1.15rem; color: var(--mute); margin: 0 0 28px; }
.muted { color: var(--mute); }
.btn { display: inline-block; background: var(--mint-ink); color: #fff; text-decoration: none; padding: 10px 18px; border-radius: 8px; font-weight: 700; }
.btn.quiet { background: transparent; color: var(--mint-ink); border: 1px solid var(--line); }
ul { padding-left: 1.3em; }
li { margin: 6px 0; }
.box { background: var(--soft); border-radius: 12px; padding: 16px 20px; margin: 20px 0; }
table { border-collapse: collapse; width: 100%; font-size: 0.95rem; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--mute); font-weight: 500; white-space: nowrap; }
footer { max-width: 760px; margin: 0 auto; padding: 24px 20px 48px; color: var(--mute); font-size: 0.9rem; border-top: 1px solid var(--line); }
footer a { color: var(--mint-ink); }