:root{color-scheme:light dark;--bg:#f6f3ed;--panel:#fffdf9;--ink:#252932;--muted:#626772;--line:#dcd6cd;--gold:#865006}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.8 -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;overflow-wrap:anywhere}main{max-width:800px;margin:auto;padding:32px 24px 72px}a{color:var(--gold);text-underline-offset:4px}a:focus-visible{outline:3px solid var(--gold);outline-offset:4px;border-radius:4px}header{padding:24px 0 20px;border-bottom:1px solid var(--line)}.brand{font-size:14px;letter-spacing:.06em;color:var(--muted)}h1{font-size:clamp(30px,6vw,42px);line-height:1.22;font-weight:650;letter-spacing:-.035em;margin:14px 0 20px}h2{font-size:22px;line-height:1.5;margin:0 0 16px}p{margin:0 0 16px}nav{display:flex;flex-wrap:wrap;gap:4px 18px}nav a{display:inline-flex;align-items:center;min-height:44px}nav a[aria-current=page]{font-weight:700;text-decoration-thickness:2px}.meta{font-size:14px;color:var(--muted);display:flex;flex-wrap:wrap;gap:4px 20px;margin:18px 0}.intro{font-size:19px;line-height:1.8}.contents{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:20px 24px;margin:28px 0}.contents h2{font-size:17px;margin-bottom:8px}.contents ol{padding-left:20px;margin:0}.contents a{display:inline-flex;align-items:center;min-height:44px}section{padding-top:28px;scroll-margin-top:20px}footer{border-top:1px solid var(--line);padding-top:24px;margin-top:36px;font-size:14px;color:var(--muted)}.contact{display:block;margin:16px 0;min-height:44px}.revisions{padding-left:20px}.cards{display:grid;gap:16px}.card{background:var(--panel);padding:24px;border:1px solid var(--line);border-radius:18px}.card h2{margin:0}.notice{border-left:3px solid var(--gold);padding-left:16px;color:var(--muted);font-size:15px}
@media(prefers-color-scheme:dark){:root{--bg:#0b0f15;--panel:#141920;--ink:#f4f4f4;--muted:#a8afb8;--line:#2c323b;--gold:#efbb65}}
@media(max-width:380px){main{padding:20px 18px 56px}.contents{padding:16px 18px}}
@media print{body{background:white;color:#111;font-size:11pt}main{max-width:none;padding:0}nav,.contents,.back,.notice{display:none}section{break-inside:avoid;padding-top:18px}a{color:#111}footer{margin-top:24px}.meta{color:#444}}