/* humsong.com — thermal poster system. Written from scratch for this site. */
@font-face{font-family:"Pathway Extreme";src:url(/assets/fonts/PathwayExtreme-300-900.woff2) format("woff2");font-weight:300 900;font-stretch:75% 100%;font-display:swap}
@font-face{font-family:"Anonymous Pro";src:url(/assets/fonts/AnonymousPro-400.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Anonymous Pro";src:url(/assets/fonts/AnonymousPro-700.woff2) format("woff2");font-weight:700;font-display:swap}
:root{
  --ink:#14062e;--ink2:#1c0a40;--ink3:#26104f;--vio:#3a1bd6;--mag:#d62cf0;--pink:#ff4fa3;--orn:#ff8a2a;--yel:#ffe94a;--cream:#fffcd6;
  --txt:#ece6ff;--dim:#a99bd6;--line:rgba(255,233,74,.16);
  --thermal:linear-gradient(90deg,var(--ink) 0%,var(--vio) 28%,var(--mag) 50%,var(--pink) 68%,var(--orn) 84%,var(--yel) 96%,var(--cream));
  --rail:68px;--sans:"Pathway Extreme",system-ui,sans-serif;--mono:"Anonymous Pro",ui-monospace,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:16px}
body{margin:0;background:var(--ink);color:var(--txt);font:400 16px/1.55 var(--sans);font-stretch:92%;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--yel)}
button{font:inherit;color:inherit;cursor:pointer}
img{max-width:100%;display:block}
.skip{position:absolute;left:-999px;top:8px;background:var(--yel);color:var(--ink);padding:8px 12px;z-index:9}
.skip:focus{left:8px}
:focus-visible{outline:2px solid var(--yel);outline-offset:3px}

/* ---- rail (left vertical strip, poster side-text) ---- */
.rail{position:fixed;inset:0 auto 0 0;width:var(--rail);display:flex;flex-direction:column;align-items:center;justify-content:space-between;padding:16px 0 20px;border-right:1px solid var(--line);background:var(--ink);z-index:5}
.mark svg{width:34px;height:34px;display:block}
.rail-nav{display:flex;flex-direction:column;gap:26px;align-items:center}
.rail-nav a{writing-mode:vertical-rl;transform:rotate(180deg);text-decoration:none;color:var(--yel);font:700 12px/1 var(--sans);font-stretch:80%;letter-spacing:.14em;text-transform:uppercase;opacity:.72;white-space:nowrap}
.rail-nav a:hover{opacity:1}
.rail-no{display:flex;flex-direction:column;align-items:center;gap:6px;font:400 13px var(--mono);color:var(--yel)}
.bar{display:block;width:40px;height:5px;border:1px solid var(--yel);position:relative}
.bar i{position:absolute;inset:0 auto 0 0;background:var(--yel);width:0}
main,.foot{margin-left:var(--rail)}

/* ---- stage: title | poster | readout ---- */
.stage{display:grid;grid-template-columns:minmax(230px,300px) minmax(0,1fr) minmax(300px,360px);gap:0;min-height:min(100vh,940px);border-bottom:1px solid var(--line)}
.stage-title{padding:34px 28px;display:flex;flex-direction:column;justify-content:space-between;gap:24px;border-right:1px solid var(--line)}
.kicker{margin:0;font:700 13px/1.2 var(--sans);font-stretch:80%;letter-spacing:.16em;text-transform:uppercase;color:var(--yel)}
.kicker>span{display:block;font:400 13px var(--mono);letter-spacing:0;margin-top:6px;color:var(--dim)}
h1{margin:0;font:850 clamp(44px,4.6vw,72px)/.9 var(--sans);font-stretch:75%;letter-spacing:-.01em;color:var(--yel);text-transform:uppercase}
.lede{margin:0;color:var(--txt);max-width:30ch;font-size:15px}
.poster{position:relative;background:var(--ink);overflow:hidden;min-height:420px}
#heat{position:absolute;inset:0;width:100%;height:100%;display:block}
.poster-side{position:absolute;top:22px;right:18px;display:flex;flex-direction:column;gap:20px;pointer-events:none}
.poster-side span{writing-mode:vertical-rl;font:700 11px var(--sans);font-stretch:80%;letter-spacing:.16em;text-transform:uppercase;color:var(--yel);opacity:.8}
.poster-foot{position:absolute;left:0;right:0;bottom:0;display:flex;align-items:flex-end;gap:18px;padding:22px;background:linear-gradient(transparent,rgba(20,6,46,.85) 55%)}
.hum-btn{flex:none;width:104px;height:104px;border-radius:50%;border:0;background:var(--yel);color:var(--ink);display:flex;flex-direction:column;align-items:center;justify-content:center;box-shadow:0 0 0 6px rgba(255,233,74,.18),0 0 40px rgba(255,138,42,.55);transition:transform .15s}
.hum-btn b{font:850 26px/1 var(--sans);font-stretch:75%;text-transform:uppercase;letter-spacing:.02em}
.hum-btn small{font:400 12px var(--mono);opacity:.7}
.hum-btn:hover{transform:scale(1.04)}
.is-live .hum-btn{background:var(--pink);color:var(--cream);animation:pulse 1.2s ease-in-out infinite}
@keyframes pulse{50%{box-shadow:0 0 0 14px rgba(255,79,163,.18),0 0 60px rgba(255,79,163,.7)}}
.hum-status{display:flex;flex-direction:column;gap:4px;min-width:0;padding-bottom:6px}
.live{font:700 44px/1 var(--mono);color:var(--cream);min-height:44px}
#humState{font-size:14px;color:var(--txt)}

.readout{padding:28px 26px;border-left:1px solid var(--line);display:flex;flex-direction:column;gap:14px;background:var(--ink2);min-width:0}
.ro-label{margin:0;font:700 12px var(--sans);font-stretch:80%;letter-spacing:.16em;text-transform:uppercase;color:var(--yel)}
.notes{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px;min-height:34px;max-height:150px;overflow:auto}
.notes li{font:700 15px var(--mono);padding:6px 8px;border-radius:4px;color:var(--ink);background:var(--yel)}
.notes li.ph{background:none;color:var(--dim);font-weight:400;padding:6px 0}
.roll{width:100%;height:56px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.codes{margin:0;display:grid;gap:10px}
.codes div{display:grid;gap:2px}
.codes dt{font:400 12px var(--mono);color:var(--dim)}
.codes dd{margin:0;font:700 20px/1.25 var(--mono);color:var(--cream);word-break:break-all}
.acts{display:flex;flex-wrap:wrap;gap:6px}
.act{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:transparent;border-radius:999px;padding:8px 13px;font:700 13px var(--sans);font-stretch:85%;color:var(--txt);text-decoration:none}
.act:hover{border-color:var(--yel);color:var(--yel)}
.act-play{background:var(--yel);border-color:var(--yel);color:var(--ink)}
.act-play:hover,.act-play.on{background:var(--orn);border-color:var(--orn);color:var(--ink)}
.act-q{opacity:.75}
.share{font:400 13px var(--mono)}
.err{margin:0;padding:10px 12px;border-left:3px solid var(--pink);background:rgba(255,79,163,.1);font-size:14px}
.keys{position:relative;display:flex;height:96px;user-select:none;-webkit-user-select:none}
.keys .wk{flex:1;min-width:0;border:1px solid var(--ink);background:var(--cream);border-radius:0 0 5px 5px;display:flex;align-items:flex-end;justify-content:center;padding:0 0 6px}
.keys .wk i{font:400 9px var(--mono);font-style:normal;color:var(--ink);opacity:.6}
.keys .bk{position:absolute;top:0;width:6.6%;height:60%;padding:0;border:1px solid var(--vio);border-top:0;background:var(--ink);border-radius:0 0 4px 4px;z-index:2}
.keys .wk:active{background:var(--yel)}.keys .bk:active{background:var(--mag)}

/* ---- section heads ---- */
section:not(.stage){padding:88px clamp(20px,5vw,72px);border-bottom:1px solid var(--line)}
.sec-head{display:grid;grid-template-columns:90px minmax(0,1fr);column-gap:24px;align-items:start;margin-bottom:40px;max-width:1100px}
.sec-no{grid-row:span 2;margin:0;font:400 64px/1 var(--mono);color:transparent;-webkit-text-stroke:1px var(--yel)}
h2{margin:0 0 10px;font:850 clamp(32px,4vw,56px)/.95 var(--sans);font-stretch:75%;text-transform:uppercase;color:var(--cream)}
.sec-head p:not(.sec-no){margin:0;max-width:62ch;color:var(--dim)}

/* ---- where: thermal ladder ---- */
.tools{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.tool{--v:.5;position:relative;display:grid;grid-template-columns:minmax(200px,1.1fr) 120px minmax(0,1fr) minmax(0,1.3fr);gap:24px;align-items:baseline;padding:22px 0 22px 26px;border-bottom:1px solid var(--line)}
.tool::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:8px;border-radius:4px;background:var(--thermal);background-size:1200% 100%;background-position:calc(var(--v)*100%) 0}
.tool-n a{font:800 24px/1.05 var(--sans);font-stretch:78%;color:var(--cream);text-decoration:none}
.tool-n a:hover{color:var(--yel)}
.tool-n a::after{content:" ↗";font-size:.7em;color:var(--yel)}
.tool-cost{display:block;font:400 13px var(--mono);color:var(--dim);margin-top:4px}
.tool-hum{display:flex;flex-direction:column}
.tool-hum span{font:400 12px var(--mono);color:var(--dim)}
.tool-hum b{font:800 18px var(--sans);font-stretch:80%;color:var(--yel)}
.tool-hum[data-hum="No"] b{color:var(--pink)}
.tool p{margin:0;font-size:15px}
.tool-where{color:var(--dim)}

/* ---- today: big poster + info ---- */
.today-grid{display:grid;grid-template-columns:minmax(0,560px) minmax(0,1fr);gap:48px;align-items:start}
.big-poster{position:relative;margin:0;aspect-ratio:3/4;background:var(--ink);overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.45);border:10px solid #000}
.big-poster img,.mini img{position:absolute;left:50%;top:50%;width:133.34%;height:75%;max-width:none;object-fit:fill;transform:translate(-50%,-50%) rotate(-90deg)}
.big-poster figcaption{position:absolute;inset:0;padding:22px;display:flex;flex-direction:column;justify-content:space-between;pointer-events:none;background:linear-gradient(90deg,rgba(20,6,46,.7),transparent 40%)}
.bp-top b{display:block;font:850 clamp(28px,3.2vw,44px)/.92 var(--sans);font-stretch:75%;text-transform:uppercase;color:var(--yel);max-width:9ch}
.bp-top small{display:block;margin-top:8px;font:400 12px var(--mono);color:var(--yel)}
.bp-v{position:absolute;left:22px;top:50%;writing-mode:vertical-rl;transform:rotate(180deg) translateY(50%);font:700 11px var(--sans);font-stretch:80%;letter-spacing:.16em;text-transform:uppercase;color:var(--yel)}
.bp-no{display:flex;flex-direction:column;gap:6px;font:400 16px var(--mono);color:var(--yel)}
.bp-no .bar{width:72px}
.bp-play{position:absolute;right:22px;bottom:22px;border:0;border-radius:999px;background:var(--yel);color:var(--ink);font:800 15px var(--sans);font-stretch:85%;padding:12px 18px}
.bp-play.on{background:var(--pink);color:var(--cream)}
.today-info{display:flex;flex-direction:column;gap:18px;padding-top:6px}
.cover{width:120px;height:120px;border-radius:2px}
.t-name{margin:0;font:850 clamp(30px,3.4vw,48px)/.95 var(--sans);font-stretch:75%;text-transform:uppercase;color:var(--cream)}
.t-name small{display:block;margin-top:10px;font:400 14px var(--mono);text-transform:none;color:var(--dim)}
.t-clip{margin:0;color:var(--dim);max-width:52ch}
.t-steps{margin:0;padding:0;list-style:none;display:grid;gap:8px;counter-reset:s}
.t-steps li{counter-increment:s;display:flex;gap:12px;align-items:baseline;font-size:15px}
.t-steps li::before{content:counter(s,decimal-leading-zero);font:400 13px var(--mono);color:var(--orn)}
.t-links{margin:0;display:flex;flex-wrap:wrap;gap:18px}
.t-credit{margin:0;display:grid;gap:8px;justify-items:start;padding:14px;border:1px dashed var(--line)}
.t-credit span{font:400 12px var(--mono);color:var(--dim)}
.t-credit code{font:400 13px/1.4 var(--mono);color:var(--cream);word-break:break-word}
.past-h{margin:56px 0 16px;font:700 13px var(--sans);font-stretch:80%;letter-spacing:.16em;text-transform:uppercase;color:var(--yel)}
.past{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:14px}
.mini{position:relative;width:100%;padding:0;border:6px solid #000;background:#000;text-align:left;display:block;aspect-ratio:3/4;overflow:hidden}
.mini-no{position:absolute;left:8px;bottom:22px;font:400 13px var(--mono);color:var(--yel)}
.mini-t{position:absolute;left:8px;top:8px;right:8px;font:850 15px/1 var(--sans);font-stretch:75%;text-transform:uppercase;color:var(--yel)}
.mini .bar{position:absolute;left:8px;bottom:10px;width:44px;height:4px}
.mini.on{border-color:var(--yel)}

/* ---- tips ---- */
.tip-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.tip-list li{padding:26px 24px 30px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.tip-list b{font:400 14px var(--mono);color:var(--orn)}
.tip-list h3{margin:14px 0 8px;font:800 22px/1.05 var(--sans);font-stretch:78%;color:var(--cream)}
.tip-list p{margin:0;color:var(--dim);font-size:15px}

/* ---- questions ---- */
.qa-list{max-width:900px;columns:1}
.qa details{border-bottom:1px solid var(--line);padding:18px 0}
.qa summary{cursor:pointer;list-style:none;font:800 20px/1.2 var(--sans);font-stretch:80%;color:var(--cream);display:flex;justify-content:space-between;gap:16px}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"+";font:400 22px var(--mono);color:var(--yel)}
.qa details[open] summary::after{content:"–"}
.qa details p{margin:10px 0 0;color:var(--dim);max-width:70ch}

/* ---- footer ---- */
.foot{padding:56px clamp(20px,5vw,72px) 64px;display:grid;grid-template-columns:minmax(0,1fr);overflow-wrap:anywhere;gap:10px;color:var(--dim);font-size:14px;background:linear-gradient(180deg,var(--ink),#0d0420)}
.foot-big{margin:0 0 6px;font:850 clamp(44px,17vw,220px)/.8 var(--sans);font-stretch:75%;text-transform:uppercase;background:var(--thermal);-webkit-background-clip:text;background-clip:text;color:transparent}
.foot p{margin:0}
.foot-links{display:flex;gap:22px;flex-wrap:wrap}

/* ---- 404 ---- */
.nf{display:grid;place-items:center;min-height:100vh;background:radial-gradient(circle at 70% 60%,var(--orn),var(--mag) 18%,var(--vio) 34%,var(--ink) 58%)}
.nf-main{padding:32px;display:grid;gap:18px;margin:0}

/* ---- responsive ---- */
@media (max-width:1180px){
  .stage{grid-template-columns:minmax(0,1fr) minmax(300px,360px);grid-template-rows:auto 1fr}
  .stage-title{grid-column:1/-1;flex-direction:row;align-items:flex-end;border-right:0;border-bottom:1px solid var(--line);padding:24px 28px}
  h1{font-size:clamp(40px,5.4vw,60px)}
  .tool{grid-template-columns:minmax(0,1fr) 110px;}
  .tool-where,.tool-how{grid-column:1/-1}
  .past{grid-template-columns:repeat(3,minmax(0,1fr))}
  .tip-list{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:760px){
  :root{--rail:0px}
  .rail{position:sticky;top:0;inset:auto;width:auto;height:52px;flex-direction:row;padding:0 12px;border-right:0;border-bottom:1px solid var(--line);gap:14px}
  .mark svg{width:30px;height:30px}
  .rail-nav{flex-direction:row;gap:16px;overflow-x:auto;flex:1;scrollbar-width:none;padding:0 2px}
  .rail-nav::-webkit-scrollbar{display:none}
  .rail-nav a{writing-mode:horizontal-tb;transform:none;font-size:11px}
  .rail-no{flex-direction:row;font-size:12px}.rail-no .bar{width:28px}
  html{scroll-padding-top:60px}
  .stage{display:flex;flex-direction:column;min-height:0}
  .stage-title{display:block;padding:16px 16px 14px}
  .kicker{display:flex;justify-content:space-between;gap:10px;align-items:baseline}.kicker>span{margin:0;display:inline}
  h1{font-size:clamp(34px,10.5vw,46px);margin-top:10px}
  .lede{display:none}
  .poster{min-height:0;height:min(52vh,430px)}
  .hum-btn{width:84px;height:84px}.hum-btn b{font-size:22px}
  .poster-foot{padding:14px;gap:14px}
  .live{font-size:34px;min-height:34px}
  #humState{font-size:13px}
  .readout{border-left:0;padding:20px 16px}
  section:not(.stage){padding:60px 16px}
  .sec-head{grid-template-columns:1fr;margin-bottom:26px}.sec-no{font-size:40px;grid-row:auto;margin-bottom:8px}
  .tool{padding-left:20px;gap:10px 16px}
  .tool-n a{font-size:21px}
  .today-grid{grid-template-columns:1fr;gap:28px}
  .past{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tip-list{grid-template-columns:1fr}
  .foot{padding:44px 16px 56px}
}
@media (min-width:1700px){.stage{grid-template-columns:340px minmax(0,1fr) 400px}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}