:root{--bg:#F2F2EF;--surface:#FFFFFF;--surface-2:#E9E9E4;--ink:#121417;--ink-2:#454951;--muted:#72777E;--line:#DDDDD7;--line-2:#C7C7C0;--tape:#F4C430;--tape-line:#B88A00;--tape-soft:#FBF1CC;--wall:#E6E5E0;--primary:#121417;--on-primary:#fff;
--f-display:'Gloock','Iowan Old Style','Palatino Linotype',Georgia,serif;--f-ui:'Hanken Grotesk','Helvetica Neue',Helvetica,Arial,sans-serif}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0E0F11;--surface:#16181B;--surface-2:#1E2125;--ink:#EEEEEA;--ink-2:#C0C3C8;--muted:#8C9197;--line:#2A2D32;--line-2:#3A3E44;--tape-line:#F4C430;--tape-soft:#3A3115;--wall:#1C1E21;--primary:#EEEEEA;--on-primary:#121417;color-scheme:dark}}
:root[data-theme="dark"]{--bg:#0E0F11;--surface:#16181B;--surface-2:#1E2125;--ink:#EEEEEA;--ink-2:#C0C3C8;--muted:#8C9197;--line:#2A2D32;--line-2:#3A3E44;--tape-line:#F4C430;--tape-soft:#3A3115;--wall:#1C1E21;--primary:#EEEEEA;--on-primary:#121417;color-scheme:dark}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 var(--f-ui);-webkit-font-smoothing:antialiased}
a{color:inherit;text-underline-offset:3px;text-decoration-thickness:1px}a:hover{text-decoration-color:var(--tape-line)}
.wrap{width:min(100% - 32px,1080px);margin-inline:auto}.art{max-width:760px;padding-block:28px 56px}
.top{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top-in{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:60px}.top nav{display:flex;gap:16px;align-items:center;font-size:15px}
.logo{display:flex;align-items:center;gap:9px;font-family:var(--f-display);font-size:22px;text-decoration:none;white-space:nowrap}.logo i{width:14px;height:14px;background:var(--tape);border-radius:2px;box-shadow:inset 0 -3px 0 rgba(0,0,0,.12)}
.btn{display:inline-block;background:var(--primary);color:var(--on-primary);border-radius:12px;padding:10px 16px;font-weight:600;text-decoration:none;white-space:nowrap}
h1{font-family:var(--f-display);font-weight:400;font-size:clamp(34px,6vw,52px);line-height:1.06;letter-spacing:-.01em;margin:8px 0 18px;text-wrap:balance}
h2{font-family:var(--f-display);font-weight:400;font-size:clamp(24px,3.4vw,30px);line-height:1.15;margin:40px 0 12px}h3,.h3{font-family:var(--f-ui);font-size:19px;font-weight:700;margin:28px 0 10px}
.lede{font-size:19px;color:var(--ink-2)}.crumbs{font-size:14px;color:var(--muted)}.crumbs a{color:var(--muted)}
ul,ol{padding-left:22px}li{margin:6px 0}
.fig{display:block;width:100%;height:auto;border-radius:16px;margin:22px 0;font-family:var(--f-ui)}
.tbl{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:var(--surface);margin:14px 0}
table{border-collapse:collapse;width:100%;font-size:15px;font-variant-numeric:tabular-nums}th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);white-space:nowrap}th{font-size:13px;color:var(--muted);font-weight:600;background:var(--surface-2)}tr:last-child td{border-bottom:0}@media (max-width:640px){table{font-size:14px}th,td{white-space:normal;padding:9px 8px;min-width:4.5em}th{font-size:12px}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:18px 20px;margin:24px 0}
.calc label{display:flex;flex-direction:column;gap:6px;font-weight:600;font-size:15px;margin:10px 0}.calc .row{display:flex;gap:8px;align-items:center;font-weight:500}
.calc input,.calc select{font:inherit;font-size:17px;padding:10px 12px;border:1px solid var(--line-2);border-radius:10px;background:var(--bg);color:var(--ink);width:130px}.calc select{width:auto}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 4px}.chip{font:inherit;font-size:14px;border:1px solid var(--line-2);background:var(--bg);color:var(--ink);border-radius:999px;padding:8px 12px;cursor:pointer}
.big{font-size:20px}.cta{font-weight:700}.formula{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:15px;background:var(--tape-soft);padding:10px 12px;border-radius:10px}
details{border-top:1px solid var(--line);padding:12px 0}summary{cursor:pointer;font-weight:600}
.cta-box{background:var(--tape-soft);border-radius:18px;padding:22px;margin:44px 0 10px}.cta-box h2{margin-top:0}
.more{columns:2;column-gap:28px}.more li{break-inside:avoid}.cards{list-style:none;padding:0;display:grid;gap:12px}
.cards a{display:flex;flex-direction:column;gap:4px;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:16px 18px;text-decoration:none}.cards b{font-size:18px}.cards span{color:var(--ink-2);font-size:15px}
.foot{border-top:1px solid var(--line);padding-block:24px 40px;color:var(--muted);font-size:14px}.foot-in{display:flex;flex-wrap:wrap;gap:12px 22px;align-items:center}.foot nav{display:flex;gap:16px}
@media (max-width:560px){.top nav a:not(.btn){display:none}.more{columns:1}body{font-size:16.5px}}