:root{--bg:#F6F6F4;--paper:#fff;--ink:#1F2326;--mute:#5E6468;--line:#D9DBD6;--yellow:#F5C400;--yellow-d:#C99F00;--yellow-bg:#FFF7CC;--graphite:#2B3034;--blue:#1C6FA3;--bluep:#DCE9F3;--ok:#2D7A4A;--no:#B6413A;--r:12px;--sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;--mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 var(--sans)}
a{color:var(--blue)}a:hover{color:#124a6e}img,svg{max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}.sr{position:absolute;left:-9999px}.skip{position:absolute;left:-9999px;top:0;background:#fff;padding:8px}.skip:focus{left:8px;z-index:10}
h1,h2,h3{font-weight:800;line-height:1.1;letter-spacing:-.02em}h1{font-size:clamp(2rem,5vw,3rem);margin:.4em 0 .3em}h2{font-size:1.5rem;margin:1.9em 0 .6em;padding-left:14px;border-left:5px solid var(--yellow)}h3{font-size:1.15rem;margin:1.4em 0 .4em}
p{margin:.7em 0}.lead{font-size:1.15rem;color:var(--mute);max-width:46em}
.hd{background:var(--graphite);color:#fff;position:sticky;top:0;z-index:5;border-bottom:4px solid var(--yellow)}.hd-in{display:flex;align-items:center;gap:20px;height:60px}
.logo{display:flex;align-items:center;gap:8px;text-decoration:none;color:#fff;font-weight:800;font-size:1.25rem;letter-spacing:-.02em}.logo b{color:var(--yellow)}
.nav{display:flex;gap:2px;margin-left:auto}.nav a{text-decoration:none;color:#E8EAEC;padding:8px 10px;border-radius:6px;font-size:.93rem}.nav a:hover{background:#3b4146;color:var(--yellow)}
.burger{display:none;margin-left:auto;background:none;border:1px solid #666;border-radius:6px;width:42px;height:38px;padding:7px 9px;cursor:pointer}.burger span:not(.sr){display:block;height:2px;background:#fff;margin:5px 0}
@media(max-width:960px){.burger{display:block}.nav{display:none;position:absolute;left:0;right:0;top:60px;background:var(--graphite);flex-direction:column;padding:8px 16px 14px}.nav.open{display:flex}}
.hero{background:var(--paper);border-bottom:1px solid var(--line);background-image:linear-gradient(rgba(28,111,163,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(28,111,163,.08) 1px,transparent 1px);background-size:24px 24px}.hero-in{display:grid;grid-template-columns:1fr 1.1fr;gap:32px;padding:34px 0 30px;align-items:start}.hero h1{margin-top:0}
@media(max-width:960px){.hero-in{grid-template-columns:minmax(0,1fr);gap:18px;padding:22px 0 24px}}
.chips{display:flex;flex-wrap:wrap;gap:8px}.chip{display:inline-block;background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:6px 12px;font-size:.9rem;text-decoration:none;color:var(--ink)}.chip:hover{border-color:var(--yellow-d)}
.main{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:40px;padding:12px 0 48px}.side{position:sticky;top:76px;align-self:start;font-size:.93rem}.side .box{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;margin-bottom:16px}.side h3{margin:.2em 0 .5em;font-size:1rem}.side a{display:block;padding:5px 0;text-decoration:none;border-bottom:1px solid var(--line);color:var(--ink)}
@media(max-width:960px){.main{grid-template-columns:minmax(0,1fr);gap:20px}.side{position:static}}
article{max-width:48em}
.korthet{background:var(--paper);border:1px solid var(--line);border-left:6px solid var(--yellow);border-radius:var(--r);padding:16px 20px;margin:18px 0}.korthet h2{margin:0 0 .4em;font-size:1.2rem;border:0;padding:0}.korthet .sub{color:var(--mute);font-size:.88rem;margin:0 0 .6em}.korthet ol{margin:0;padding-left:1.2em}.korthet li{margin:.45em 0}
.how{background:#ECECE8;border-radius:var(--r);padding:14px 18px;margin:22px 0;font-size:.93rem}.note{background:var(--yellow-bg);border-left:4px solid var(--yellow-d);padding:10px 14px;border-radius:0 var(--r) var(--r) 0;margin:16px 0;font-size:.95rem}
.tbl{overflow:auto;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);margin:14px 0}table{border-collapse:collapse;width:100%;font-size:.93rem}th,td{padding:8px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{background:var(--graphite);color:#fff;font-weight:600}tr:last-child td{border-bottom:0}.num{text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums}.sm{font-size:.85rem;color:var(--mute)}.ok{color:var(--ok);font-weight:700}.no{color:var(--no);font-weight:700}.anm{color:var(--yellow-d);font-weight:700}
.calc{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);box-shadow:0 12px 30px -22px rgba(0,0,0,.5);overflow:hidden;margin:10px 0 20px}.calc .ch{background:var(--graphite);color:#fff;padding:12px 18px;font-weight:700;font-size:1.1rem;display:flex;justify-content:space-between;align-items:center}.calc .ch small{font-weight:400;color:var(--yellow);font-size:.8rem}.calc .cb{padding:14px 18px}
.f{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:8px}.f.one{grid-template-columns:1fr}.f3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;margin-bottom:8px}label{display:block;font-size:.82rem;color:var(--mute);margin-bottom:3px}input,select{width:100%;font:inherit;padding:8px 10px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--ink);font-variant-numeric:tabular-nums}input:focus,select:focus{outline:2px solid var(--yellow-d);outline-offset:1px}
@media(max-width:700px){.f,.f3{grid-template-columns:1fr}}
.verdict{border-radius:10px;padding:14px 16px;margin-top:10px;border:2px solid var(--line)}.verdict.ok{border-color:var(--ok);background:#EAF5EE}.verdict.no{border-color:var(--no);background:#FBEBEA}.verdict.anm{border-color:var(--yellow-d);background:var(--yellow-bg)}.verdict .v{font-size:1.3rem;font-weight:800;margin:0 0 .3em}.verdict ul{margin:.4em 0 0;padding-left:1.2em}.verdict li{margin:.25em 0}.verdict .par{font-family:var(--mono);font-size:.82rem;color:var(--mute)}
.paper{background:#EFEFEB;border-radius:8px;padding:12px 14px;margin-top:10px;font-variant-numeric:tabular-nums}.paper .k{font-size:.8rem;color:var(--mute);text-transform:uppercase;letter-spacing:.06em;margin-bottom:6px}.line{display:flex;justify-content:space-between;gap:12px;padding:5px 0;border-bottom:1px dotted #cfcfc8}.line.total{border-bottom:0;border-top:2px solid var(--ink);margin-top:4px;padding-top:8px;font-weight:800;font-size:1.1rem}.line.acc span:last-child{color:var(--yellow-d);font-weight:700}
.chow{font-size:.85rem;color:var(--mute);margin-top:10px}
/* isometric house */
.iso{display:block;max-width:420px;margin:0 auto}.iso .b{fill:#fff;stroke:var(--graphite);stroke-width:2;stroke-linejoin:round}.iso .r{fill:var(--yellow)}.iso .g{fill:#E6EBE8}.iso .add{fill:var(--bluep);stroke:var(--blue);stroke-dasharray:4 3}.iso text{font:11px var(--mono);fill:var(--mute)}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;margin:16px 0}.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;text-decoration:none;color:var(--ink);display:block}.card:hover{border-color:var(--yellow-d)}.card h3{margin:0 0 .3em;font-size:1.05rem}.card p{margin:0;color:var(--mute);font-size:.9rem}.card .big{font-size:1.5rem;font-weight:800;margin:.2em 0;letter-spacing:-.02em}.card .big b{color:var(--yellow-d)}
.faq details{background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:10px 16px;margin:8px 0}.faq summary{cursor:pointer;font-weight:600}.faq details p{margin:.5em 0 .2em}
.crumbs{font-size:.85rem;color:var(--mute);margin:14px 0 0}.crumbs a{text-decoration:none}
.steps{counter-reset:s;list-style:none;padding:0}.steps li{position:relative;padding:8px 0 8px 44px;border-left:2px solid var(--line);margin-left:14px}.steps li:before{counter-increment:s;content:counter(s);position:absolute;left:-15px;top:8px;width:28px;height:28px;border-radius:6px;background:var(--yellow);color:var(--graphite);text-align:center;line-height:28px;font-weight:800;font-size:.85rem}
.ft{background:var(--graphite);color:#CFD3D6;margin-top:30px}.ft a{color:#fff;text-decoration:none;display:block;padding:3px 0;font-size:.93rem}.ft a:hover{color:var(--yellow)}.ft-in{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:28px;padding:34px 0 20px}.ft h3{color:#fff;margin:0 0 .5em;font-size:1rem}.ft-logo{font-weight:800;font-size:1.3rem;color:#fff}.ft-logo b{color:var(--yellow)}.ft p{font-size:.9rem;margin:.5em 0}.ft-legal{padding:12px 16px 26px;font-size:.82rem;border-top:1px solid #444}
@media(max-width:960px){.ft-in{grid-template-columns:1fr 1fr}}@media(max-width:520px){.ft-in{grid-template-columns:1fr}}
[hidden]{display:none!important}
.tbl td:first-child{min-width:200px}.tbl td:first-child .sm{display:block;max-width:320px;font-weight:400}