:root{
--brand:#0f766e;--brand-600:#0d9488;--brand-50:#eefaf7;--accent:#14b8a6;
--ink:#0f2027;--ink-2:#33484f;--muted:#5c7078;--line:#dde7e6;--line-2:#eef4f3;
--bg:#f6f9f8;--surface:#fff;--warn-bg:#fff7ed;--warn-line:#fdba74;--warn-ink:#7c2d12;
--info-bg:#f0f9ff;--info-line:#bae6fd;--info-ink:#0c4a6e;
--radius:14px;--radius-sm:10px;--shadow:0 1px 2px rgba(15,32,39,.06),0 8px 24px -16px rgba(15,32,39,.25);
--wide:1080px;--measure:68ch}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);
font:16px/1.62 ui-sans-serif,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
font-variant-numeric:tabular-nums}
.wrap{max-width:var(--wide);margin:0 auto;padding:0 18px}
a{color:var(--brand);text-decoration-thickness:1px;text-underline-offset:2px}
a:hover{color:var(--brand-600)}
h1{font-size:clamp(1.6rem,1.2rem + 1.6vw,2.15rem);line-height:1.2;margin:.4rem 0 .5rem;letter-spacing:-.01em}
h2{font-size:1.22rem;line-height:1.3;margin:0 0 .6rem}
h3{font-size:1.05rem;margin:1.1rem 0 .3rem}
p{margin:0 0 .9rem}
ul,ol{margin:0 0 .9rem;padding-left:1.15rem}
li{margin:.25rem 0}
.sub{color:var(--ink-2);font-size:1.05rem;margin:0 0 1.1rem;max-width:var(--measure)}
.hint{color:var(--muted);font-size:.85rem;margin:.5rem 0 0}
.note{color:var(--muted);font-size:.85rem}
.skip{position:absolute;left:-9999px}
.skip:focus{left:8px;top:8px;background:#fff;padding:8px 12px;border-radius:8px;z-index:9}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}
header.site{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.bar{display:flex;align-items:center;gap:14px;min-height:58px;flex-wrap:wrap}
.brand{font-weight:700;font-size:1.12rem;color:var(--ink);text-decoration:none;letter-spacing:-.01em}
.brand:before{content:"";display:inline-block;width:10px;height:10px;border-radius:3px;
background:linear-gradient(135deg,var(--brand),var(--accent));margin-right:8px}
nav.main{display:flex;align-items:center;gap:16px;font-size:.95rem;margin-left:auto;flex-wrap:wrap}
nav.main a{color:var(--ink-2);text-decoration:none}
nav.main a:hover{color:var(--brand)}
nav.main details{position:relative}
nav.main summary{cursor:pointer;color:var(--ink-2);list-style:none;padding:6px 0}
nav.main summary::-webkit-details-marker{display:none}
nav.main summary:after{content:"▾";margin-left:6px;font-size:.75rem;color:var(--muted)}
nav.main details[open] summary:after{content:"▴"}
.menu{position:absolute;right:0;top:calc(100% + 6px);background:var(--surface);border:1px solid var(--line);
border-radius:var(--radius-sm);box-shadow:var(--shadow);padding:10px 14px;min-width:230px;z-index:6;
columns:2;column-gap:18px;list-style:none;margin:0}
.menu li{break-inside:avoid;margin:.15rem 0}
.menu a{color:var(--ink-2);text-decoration:none;font-size:.92rem}
main{padding:22px 0 10px}
.cols2{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:26px;align-items:start}
.col-main{min-width:0;max-width:var(--measure)}
.crumbs{font-size:.85rem;color:var(--muted);margin:0 0 .5rem}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{margin:0 7px;color:var(--line)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
padding:18px;margin:0 0 18px;box-shadow:var(--shadow)}
.card h2{font-size:1.02rem}
.card.muted{background:var(--brand-50);border-color:#cdeae4}
aside.side{position:sticky;top:76px;font-size:.94rem}
.result{border-color:#cdeae4;background:linear-gradient(180deg,var(--brand-50),var(--surface) 60%)}
.hero{display:flex;flex-direction:column;gap:2px;padding:2px 0 12px;border-bottom:1px dashed var(--line)}
.hero-label{color:var(--muted);font-size:.85rem;text-transform:uppercase;letter-spacing:.06em}
.hero-value{font-size:clamp(1.9rem,1.4rem + 2vw,2.6rem);font-weight:700;line-height:1.1;color:var(--brand)}
table.out{margin:8px 0 0;width:100%}
table.out th{font-weight:500;color:var(--ink-2);width:46%}
table.out td{font-weight:500}
table.out tr:last-child th,table.out tr:last-child td{border-bottom:0}
.calc{padding:16px}
.fields{display:grid;grid-template-columns:1fr 1fr;gap:12px 14px}
.field{display:flex;flex-direction:column;gap:4px}
.field label,fieldset legend{font-weight:600;font-size:.85rem;color:var(--ink-2)}
input[type=number],input[type=time],select{width:100%;padding:10px 11px;font-size:1rem;color:var(--ink);
border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);font:inherit}
input:focus,select:focus{border-color:var(--accent);outline:2px solid var(--brand-50)}
fieldset.seg{border:0;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
fieldset.seg legend{padding:0 0 4px}
fieldset.seg label{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);
border-radius:999px;padding:6px 12px;font-size:.9rem;cursor:pointer;background:var(--surface)}
fieldset.seg input{accent-color:var(--brand);margin:0}
fieldset.seg input:checked+span{font-weight:600}
fieldset.seg label:has(input:checked){border-color:var(--brand);background:var(--brand-50)}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
button{font:inherit;font-size:.92rem;padding:9px 14px;border-radius:999px;border:1px solid var(--brand);
background:var(--brand);color:#fff;cursor:pointer}
button.ghost{background:transparent;color:var(--brand)}
button:hover{background:var(--brand-600);border-color:var(--brand-600);color:#fff}
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line-2);vertical-align:top}
table.data{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden}
table.data th{background:var(--brand-50);font-size:.85rem;text-transform:uppercase;letter-spacing:.04em;color:var(--ink-2)}
table.data tr:nth-child(even) td{background:#fbfdfd}
.scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 .9rem}
.block{margin:0 0 26px}
.callout{border-left:3px solid var(--info-line);background:var(--info-bg);color:var(--info-ink);
padding:11px 14px;border-radius:var(--radius-sm);margin:0 0 .9rem}
.callout.warn{border-color:var(--warn-line);background:var(--warn-bg);color:var(--warn-ink)}
.chart .bars{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.chart .bars li{display:grid;grid-template-columns:minmax(96px,32%) 1fr auto;gap:10px;align-items:center;margin:0}
.bar-label{font-size:.88rem;color:var(--ink-2)}
.bar-track{height:10px;background:var(--line-2);border-radius:999px;overflow:hidden}
.bar-fill{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--accent))}
.bar-value{font-size:.9rem;font-weight:600;white-space:nowrap}
details{border-bottom:1px solid var(--line-2);padding:10px 0}
details summary{cursor:pointer;font-weight:600;color:var(--ink)}
details p{margin:.6rem 0 0;color:var(--ink-2)}
.tiles{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.tile{display:flex;flex-direction:column;gap:2px;padding:11px 12px;border:1px solid var(--line);
border-radius:var(--radius-sm);text-decoration:none;background:var(--surface)}
.tile:hover{border-color:var(--accent);background:var(--brand-50)}
.tile strong{color:var(--ink);font-size:.95rem}
.tile span{color:var(--muted);font-size:.82rem}
.links{list-style:none;padding:0;margin:0}
.links a{text-decoration:none;color:var(--ink-2)}
.links a:hover{color:var(--brand)}
.toc ol{list-style:none;padding:0;margin:0;counter-reset:t}
.toc li{counter-increment:t;margin:.2rem 0}
.toc a{text-decoration:none}
.toc a:before{content:counter(t) ". ";color:var(--muted)}
.refs ol{font-size:.92rem}
.refs a{word-break:break-word}
.updated{color:var(--muted);font-size:.85rem;border-top:1px solid var(--line);padding-top:12px}
footer.site{background:var(--surface);border-top:1px solid var(--line);margin-top:26px;padding:26px 0 34px}
footer.site .cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
footer.site h2{font-size:.85rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:.5rem}
footer.site ul{list-style:none;padding:0;margin:0;font-size:.92rem}
footer.site li{margin:.2rem 0}
footer.site a{color:var(--ink-2);text-decoration:none}
footer.site a:hover{color:var(--brand)}
.fine{margin-top:20px;color:var(--muted);font-size:.82rem}
.fine p{margin:.3rem 0}
@media (max-width:900px){
.cols2{grid-template-columns:1fr}
aside.side{position:static}
.col-main{max-width:none}
}
@media (max-width:620px){
.fields{grid-template-columns:1fr}
.tiles{grid-template-columns:1fr}
footer.site .cols{grid-template-columns:1fr}
.menu{columns:1;right:auto;left:0}
}
@media (prefers-color-scheme:dark){
:root{--ink:#e8f1f0;--ink-2:#c3d5d3;--muted:#9db0ae;--line:#26383a;--line-2:#1d2c2e;
--bg:#0d1618;--surface:#14201f;--brand-50:#12302c;--shadow:none}
.brand{color:var(--ink)}
table.data tr:nth-child(even) td{background:#131f1e}
.result{background:linear-gradient(180deg,#12302c,var(--surface) 60%)}
.card.muted{background:#12302c;border-color:#1d4440}
button{background:var(--brand);color:#fff}
}
@media print{
header.site,aside.side,footer.site,.actions,.toc{display:none}
.card{box-shadow:none;border-color:#ccc}
.hero-value{color:#000}
body{background:#fff}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}