@font-face{font-family:"Big Shoulders Display";src:url(fonts/big-shoulders-display-latin-600-normal.woff2) format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Big Shoulders Display";src:url(fonts/big-shoulders-display-latin-800-normal.woff2) format("woff2");font-weight:800;font-display:swap}
@font-face{font-family:"Literata";src:url(fonts/literata-latin-400-normal.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Literata";src:url(fonts/literata-latin-400-italic.woff2) format("woff2");font-weight:400;font-style:italic;font-display:swap}
@font-face{font-family:"Literata";src:url(fonts/literata-latin-600-normal.woff2) format("woff2");font-weight:600;font-display:swap}

/* Palette from the sauna itself: soot of a smoke sauna, birch benches,
   basalt stones, the copper of the water bucket, steam. */
:root{
  --soot:#1D1916;
  --soot-2:#2A2420;
  --birch:#ECEBE4;
  --paper:#F8F7F2;
  --basalt:#3F4A52;
  --steam:#D6DDDE;
  --copper:#A3521D;
  --copper-ink:#8A4116;
  --copper-soft:#F1E1D2;
  --rule:#D3D3CA;
  --display:"Big Shoulders Display","Arial Narrow",sans-serif;
  --text:"Literata",Georgia,serif;
  --wrap:1160px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--birch);color:var(--soot);font:400 1.05rem/1.72 var(--text)}
img{max-width:100%;height:auto;display:block}
a{color:var(--copper-ink);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--soot);text-decoration-color:var(--copper);text-decoration-thickness:2px}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}
.skip:focus{left:16px;top:12px;background:var(--paper);padding:8px 12px;z-index:9}

/* ---------- header ---------- */
.site-head{background:var(--soot);color:var(--birch)}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:64px;flex-wrap:wrap}
.logo{font:800 1.45rem/1 var(--display);color:var(--birch);text-decoration:none;display:flex;align-items:center;gap:10px;letter-spacing:.01em}
.logo:hover{color:#fff}
.nav{display:flex;gap:26px;flex-wrap:wrap;font:600 1.1rem/1 var(--display);letter-spacing:.02em}
.nav a{color:#CFCAC2;text-decoration:none;padding:6px 0;border-bottom:2px solid transparent}
.nav a:hover{color:#fff}
.nav a[aria-current=page]{color:#fff;border-color:var(--copper)}

/* ---------- dark band with the page title ---------- */
.band{background:var(--soot);color:var(--birch);position:relative;overflow:hidden;border-bottom:6px solid var(--copper)}
.band .wrap{position:relative;z-index:1;padding-top:10px;padding-bottom:44px}
.band h1{font:800 clamp(2.8rem,7vw,5.6rem)/.92 var(--display);letter-spacing:-.005em;margin:18px 0 18px;max-width:14ch;color:#F6F2EA}
.band .lede{font-size:1.16rem;line-height:1.62;color:#C9C3BA;max-width:58ch;margin:0}
.band .crumbs{color:#9E968C}
.band .crumbs a{color:#CFCAC2}
.band-home{min-height:min(78vh,640px);display:flex;align-items:flex-end}
.band-home .wrap{width:100%;padding-bottom:150px}
.band-home h1{font-size:clamp(3.4rem,10.5vw,8.6rem);max-width:9ch}
.stones{position:absolute;left:0;right:0;bottom:-2px;width:100%;height:auto;z-index:0;pointer-events:none}
.heater-art{position:absolute;right:max(20px,calc((100vw - var(--wrap))/2 + 30px));bottom:34px;height:min(86%,560px);width:auto;z-index:0;pointer-events:none}
.wisp path{opacity:0;transform:translateY(24px);animation:wisp 2.6s ease-out forwards}
.wisp path:nth-child(2){animation-delay:.5s}
.wisp path:nth-child(3){animation-delay:1s}
@keyframes.wisp{to{opacity:.6;transform:none}}

.crumbs{font:600 1rem/1.4 var(--display);letter-spacing:.03em;margin:18px 0 0}

/* ---------- type ---------- */
h2,h3{font-family:var(--display);color:var(--soot);margin:0 0 .45em}
h2{font-weight:800;font-size:clamp(1.9rem,3.6vw,2.7rem);line-height:1;margin-top:1.9em}
h3{font-weight:800;font-size:1.45rem;line-height:1.1;margin-top:1.5em}
p,ul,ol{margin:0 0 1.1em}
.prose{max-width:68ch}
.prose li{margin-bottom:.45em}
.prose li::marker{color:var(--copper)}
main{padding:0 0 80px}
.muted{color:var(--basalt)}
.checked{font:600 1rem/1.4 var(--display);letter-spacing:.02em;color:var(--basalt);margin-top:28px}

/* ---------- rating plates: the signature element ---------- */
.filter{display:flex;gap:8px;flex-wrap:wrap;margin:34px 0 0}
.filter button{font:600 1.08rem/1 var(--display);letter-spacing:.03em;padding:10px 16px;border:2px solid var(--soot);background:transparent;color:var(--soot);cursor:pointer;border-radius:3px}
.filter button:hover{background:var(--paper)}
.filter button[aria-pressed=true]{background:var(--soot);color:var(--birch)}
.filter-note{font:600 1rem/1.4 var(--display);color:var(--basalt);margin:12px 0 0;letter-spacing:.02em}

.plates{list-style:none;padding:0;margin:22px 0 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:18px}
.plate{position:relative;padding:22px 26px 22px;border-radius:4px;
  background:
    radial-gradient(circle at 12px 12px,#8E979B 2.4px,#C4CDCF 3px,transparent 4px),
    radial-gradient(circle at calc(100% - 12px) 12px,#8E979B 2.4px,#C4CDCF 3px,transparent 4px),
    radial-gradient(circle at 12px calc(100% - 12px),#8E979B 2.4px,#C4CDCF 3px,transparent 4px),
    radial-gradient(circle at calc(100% - 12px) calc(100% - 12px),#8E979B 2.4px,#C4CDCF 3px,transparent 4px),
    linear-gradient(135deg,#E3E8E8 0%,#CFD7D8 55%,#DCE2E2 100%);
  box-shadow:inset 0 0 0 1px #B7C1C3,inset 0 2px 0 rgba(255,255,255,.7)}
.plate[hidden]{display:none}
.plate h3{margin:0;font-size:clamp(2.4rem,4.2vw,3.2rem);line-height:.95;font-weight:800}
.plate h3 a{color:var(--soot);text-decoration:none}
.plate h3 a:hover{color:var(--copper-ink)}
.plate dl{display:grid;grid-template-columns:repeat(3,auto);justify-content:start;gap:2px 22px;margin:14px 0 12px;font-family:var(--display)}
.plate dt{font-weight:600;font-size:.92rem;color:var(--basalt);letter-spacing:.03em}
.plate dd{margin:0;font-weight:800;font-size:1.18rem;grid-row:2}
.plate p{margin:0;font-size:.98rem;line-height:1.58;color:#2B2724}
.plate .makes{display:flex;gap:6px;flex-wrap:wrap;margin-top:14px}
.chip{font:600 .95rem/1 var(--display);letter-spacing:.03em;padding:6px 9px;border:1.5px solid var(--basalt);color:var(--basalt);border-radius:2px}
.chip.wood{border-color:var(--copper);color:var(--copper-ink)}

/* ---------- tables ---------- */
.table-wrap{overflow-x:auto;margin:1.3em 0 1.7em;background:var(--paper);border-top:4px solid var(--soot)}
table{border-collapse:collapse;width:100%;font:400 .97rem/1.5 var(--text);min-width:520px}
th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--rule);vertical-align:top}
th{font:800 1.08rem/1.2 var(--display);letter-spacing:.02em;white-space:nowrap;color:var(--soot)}
tr:last-child td{border-bottom:0}
td:first-child{font-weight:600}

/* ---------- brand page layout ---------- */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:56px;align-items:start;margin-top:36px}
.layout > .prose > h2:first-child{margin-top:0}
.spec{padding:24px 24px 20px;position:sticky;top:20px;border-radius:4px;
  background:
    radial-gradient(circle at 12px 12px,#8E979B 2.4px,#C4CDCF 3px,transparent 4px),
    radial-gradient(circle at calc(100% - 12px) 12px,#8E979B 2.4px,#C4CDCF 3px,transparent 4px),
    radial-gradient(circle at 12px calc(100% - 12px),#8E979B 2.4px,#C4CDCF 3px,transparent 4px),
    radial-gradient(circle at calc(100% - 12px) calc(100% - 12px),#8E979B 2.4px,#C4CDCF 3px,transparent 4px),
    linear-gradient(135deg,#E3E8E8 0%,#CFD7D8 55%,#DCE2E2 100%);
  box-shadow:inset 0 0 0 1px #B7C1C3}
.spec h2{font-size:1.7rem;margin:0 0 12px}
.spec dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:9px 16px;font-family:var(--display)}
.spec dt{font-weight:600;color:var(--basalt);font-size:1rem;letter-spacing:.02em}
.spec dd{margin:0;font-weight:800;font-size:1.08rem;line-height:1.25}

figure{margin:1.7em 0}
figure img{border-radius:3px}
figcaption{font:600 1rem/1.4 var(--display);letter-spacing:.02em;color:var(--basalt);margin-top:9px}

.note{background:var(--copper-soft);border-left:5px solid var(--copper);padding:15px 20px;max-width:68ch;margin:1.3em 0}
.note p:last-child{margin:0}

/* ---------- guides strip ---------- */
.guides{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:0;margin-top:20px;border-top:4px solid var(--soot)}
.guide{padding:18px 22px 22px 0;border-bottom:1px solid var(--rule)}
.guide h3{margin:0 0 6px;font-size:1.5rem}
.guide h3 a{color:var(--soot);text-decoration:none}
.guide h3 a:hover{color:var(--copper-ink)}
.guide p{margin:0;font-size:.97rem;color:var(--basalt);padding-right:12px}

/* ---------- calculator ---------- */
.calc{background:var(--soot);color:var(--birch);padding:26px 26px 28px;max-width:720px;border-bottom:6px solid var(--copper);margin:1.4em 0 2em}
.calc h2{color:#F6F2EA;margin-top:0}
.calc .row{display:flex;gap:16px;flex-wrap:wrap}
.calc .field{flex:1 1 140px}
.calc label{display:block;font:600 1.05rem/1.2 var(--display);letter-spacing:.03em;margin:12px 0 6px;color:#CFCAC2}
.calc input,.calc select{font:600 1.15rem var(--display);padding:10px 12px;border:2px solid #4A423C;border-radius:3px;width:100%;background:var(--soot-2);color:#fff}
.calc output{display:block;margin-top:20px;font:800 clamp(2.6rem,6vw,3.6rem)/1 var(--display);color:#F6F2EA}
.calc .out-note{color:#C9C3BA;margin:10px 0 0;font-size:.98rem}

/* ---------- FAQ ---------- */
.faq details{border-top:1px solid var(--rule);padding:14px 0}
.faq details:last-of-type{border-bottom:1px solid var(--rule)}
.faq summary{font:800 1.4rem/1.15 var(--display);cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--copper);font-size:1.6rem;line-height:1}
.faq details[open] summary::after{content:"\2212"}
.faq details p{margin:10px 0 2px}

/* ---------- footer ---------- */
.site-foot{background:var(--soot);color:#B8B1A7;padding:40px 0 44px;font-size:.96rem}
.site-foot .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px}
.site-foot a{color:#E7E2DA}
.site-foot a:hover{color:#fff}
.site-foot ul{list-style:none;padding:0;margin:0}
.site-foot li{margin-bottom:4px}
.site-foot h2{font-size:1.5rem;margin:0 0 10px;color:#F6F2EA}

/* ---------- 404 ---------- */
.lost{padding:30px 0}

@media (max-width:900px){
  .layout{grid-template-columns:minmax(0,1fr);gap:28px}
  .spec{position:static}
  .site-foot .cols{grid-template-columns:1fr}
  .heater-art{display:none}
}
@media (max-width:560px){
  .plates{grid-template-columns:minmax(0,1fr)}
  .plate dl{grid-template-columns:repeat(2,auto)}
  .plate dd{grid-row:auto}
  .nav{gap:16px;font-size:1.02rem}
  .band-home{min-height:0}
  .band-home .wrap{padding-bottom:110px}
}
@media (prefers-reduced-motion:reduce){
  .wisp path{animation:none;opacity:.6;transform:none}
}