:root{--bg: #faf7f1;--panel: #fffdf9;--muted: #5d5245;--ochre: #8a6210;--line: #e9e0d2;--accent: #c2410c;--accent-dark: #9a3412;--ochre-soft: #fbf3dd;--ok: #15803d;--ok-soft: #eaf6ee;--warn: #b45309;--warn-soft: #fdf3e3;--bad: #b91c1c;--bad-soft: #fdecec;--radius: 12px;--maxw: 1060px;--serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;--sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}.narrow{max-width:700px;margin:0 auto;padding:0 20px}main{padding:40px 0 72px}.site-header{position:sticky;top:0;z-index:50;background:#faf7f1eb;backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}.site-header .wrap{display:flex;align-items:center;gap:28px;min-height:60px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-family:var(--serif);font-size:21px;font-weight:700}.brand img{width:28px;height:28px;border-radius:7px}.site-header nav{display:flex;gap:20px;margin-left:auto;flex-wrap:wrap}.site-header nav a{padding:4px 2px;border-bottom:2px solid transparent;text-decoration:none}.site-header nav a:hover,.site-header nav a[aria-current=page]{color:var(--accent-dark);border-bottom-color:var(--accent)}.site-footer{border-top:1px solid var(--line);background:var(--panel);padding:32px 0 48px;color:var(--muted);font-size:14px}.site-footer .cols{display:flex;gap:48px;flex-wrap:wrap}.site-footer .cols>div{min-width:180px}.site-footer h3{font-size:13px;text-transform:uppercase;letter-spacing:.08em;margin:0 0 10px;color:var(--ink)}.site-footer a{color:var(--muted);text-decoration:none}.site-footer 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var(--line)}.stand-line{color:var(--muted);font-size:15px;margin-bottom:28px;text-wrap:balance}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin:24px 0}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;text-decoration:none;color:inherit;display:block;transition:border-color .15s,transform .15s,box-shadow .15s}.card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 6px 20px #9a341214}.card h3{margin:0 0 6px;font-size:20px}.card p{margin:0;color:var(--muted);font-size:15px}.card .go{color:var(--accent-dark);font-weight:650;font-size:14.5px}.note{border-radius:var(--radius);padding:14px 18px;margin:18px 0;font-size:15.5px;border:1px solid transparent}.note.tip{background:var(--ok-soft);border-color:#cfe8d6}.note.warn{background:var(--warn-soft);border-color:#f2ddb7}.note.info{background:var(--accent-soft);border-color:#f3d5c0}.note 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li,.card,.note{break-inside:avoid;border-color:#bbb}a{color:#000;text-decoration:none}.note{background:#f3f3f3!important}}.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 18px;border-radius:0 0 10px;z-index:100;font-weight:650}.skip-link:focus{left:0}.backlink{margin:0 0 26px;font-size:14.5px}.backlink a{font-weight:650;text-decoration:none}.backlink a:hover{text-decoration:underline}@media(max-width:640px){.site-header .wrap{gap:14px}.site-header nav{gap:12px}.calc-row{grid-template-columns:minmax(0,1fr) 96px 60px 40px}.calc-row input[type=number]{min-width:0}table.data{display:block;overflow-x:auto;max-width:100%}table.data .basis{max-width:220px}}