/* home page extras: pinned chord scene and tool previews */
.chord{padding-block:72px;background:radial-gradient(70% 50% at 50% 60%,rgba(79,172,254,.1),transparent 70%),var(--obs)}
.chord-in{display:flex;flex-direction:column;gap:20px}
.chord-stage svg{display:block;width:100%;height:auto}
.chord-caps{list-style:none;margin:0;padding:0;display:grid;gap:12px;max-width:720px}
.chord-caps li{font-size:clamp(18px,4.6vw,24px);line-height:1.35;color:var(--slate);text-wrap:balance}
.chord-caps b{color:var(--plat);font-weight:600}
.chord-bar{display:none}
.js .chord{padding:0;height:520vh;height:520svh}
.js .chord-stick{position:sticky;top:var(--head);height:calc(100vh - var(--head));height:calc(100svh - var(--head));min-height:520px;display:flex;align-items:center;overflow:hidden}
.js .chord-in{width:100%;gap:16px}
.js .chord-title{font-size:clamp(28px,7vw,48px)}
.js .chord-stage svg{height:min(46svh,62vw);width:100%}
.js .chord-caps{display:block;position:relative;min-height:3.6em}
.js .chord-caps li{position:absolute;left:0;right:0;top:0;opacity:0;transform:translateY(14px);transition:opacity .45s ease,transform .45s cubic-bezier(.2,.7,.2,1)}
.js .chord-caps li.on{opacity:1;transform:none}
.js .chord-bar{display:block;position:relative;height:3px;max-width:320px;border-radius:3px;background:var(--line);overflow:hidden}
.chord-bar i{position:absolute;inset:0;background:var(--accent-grad);transform:scaleX(0);transform-origin:0 50%}
@media (prefers-reduced-motion:reduce){
  .js .chord{height:auto;padding-block:72px}
  .js .chord-stick{position:static;height:auto;min-height:0}
  .js .chord-caps{display:grid}
  .js .chord-caps li{position:static;opacity:1;transform:none}
  .js .chord-bar{display:none}
}
.home-mini{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.6fr);gap:12px;align-items:center;margin-top:auto}
.home-mini svg{width:100%;height:auto;display:block}
.home-gauge{width:100%;max-width:240px;margin:auto auto 0}

/* ===== home story: strings → guitar → keyboard → logo (js/story.js) ===== */
.story{position:relative;height:300vh;background:var(--obs)}
.story-stage{position:sticky;top:calc(var(--head) + env(safe-area-inset-top,0px));height:calc(100svh - var(--head) - env(safe-area-inset-top,0px));overflow:hidden;touch-action:pan-y}
.story canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.story-cap,.story-cue,.story-end,.story-tip{position:absolute;left:0;right:0;text-align:center;pointer-events:none;padding-inline:var(--gut) var(--gut-r)}
.story-top{top:26px}
.story-top .eyebrow{margin-bottom:12px;color:var(--gtr-a)}
.story-h{font-family:"Instrument Serif",Georgia,serif;font-size:clamp(42px,10.5vw,92px);line-height:1.02;letter-spacing:-.01em;text-wrap:balance;margin:0}
.story-h em{font-style:italic;background:linear-gradient(90deg,var(--gtr-a),var(--gtr-b) 45%,var(--pno-a));-webkit-background-clip:text;background-clip:text;color:transparent}
.story-bot{bottom:calc(30px + env(safe-area-inset-bottom,0px))}
body.has-dock .story-bot,body.has-dock .story-cue{bottom:calc(104px + env(safe-area-inset-bottom,0px))}
.beat{font-family:"Instrument Serif",Georgia,serif;font-style:italic;font-size:clamp(32px,7.5vw,58px);margin:0}
.beat b{font-style:normal;font-weight:400}
.beat .w{background:linear-gradient(90deg,var(--gtr-a),var(--gtr-b));-webkit-background-clip:text;background-clip:text;color:transparent}
.beat .c{background:linear-gradient(90deg,var(--pno-a),var(--pno-b));-webkit-background-clip:text;background-clip:text;color:transparent}
.story-cue{bottom:30px;display:flex;flex-direction:column;align-items:center;gap:8px;font-size:11px;font-weight:600;letter-spacing:.26em;text-transform:uppercase;color:var(--plat-3)}
.story-cue i{width:1px;height:36px;background:linear-gradient(var(--gtr-a),transparent)}
@media (prefers-reduced-motion:no-preference){.story-cue i{animation:laCueS 2.2s var(--ease) infinite;transform-origin:top}}
@keyframes laCueS{0%{transform:scaleY(0)}50%{transform:scaleY(1)}100%{transform:scaleY(1);opacity:0}}
.story-end{inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;opacity:0}
.story-end img{width:min(44vw,200px);height:auto;border-radius:50%;box-shadow:0 0 0 1px rgba(255,255,255,.2),0 0 60px rgba(255,138,76,.35),0 0 120px rgba(164,139,255,.35)}
.story-tip{bottom:14px;font-size:12px;color:var(--plat-3)}
body.has-dock .story-tip{bottom:calc(90px + env(safe-area-inset-bottom,0px))}
@media (prefers-reduced-motion:reduce){.story{height:auto}.story-stage{position:relative;top:0;height:min(640px,calc(100svh - var(--head)))}}
/* playable instruments on the course tiles */
.tile canvas.playable{display:block;width:100%;height:190px;margin:-6px 0 2px;cursor:pointer;touch-action:pan-y;-webkit-tap-highlight-color:transparent}
.play-hint{align-items:center;gap:12px;flex-wrap:wrap}
.play-hint .small{color:var(--plat-3)}
/* playful cue above each playable instrument; changes after the first touch */
.play-cue{display:flex;align-items:center;gap:8px;margin:-4px 0 -2px;font-family:"Instrument Serif",Georgia,serif;font-style:italic;font-size:19px;line-height:1.2;color:var(--acc);letter-spacing:.005em;pointer-events:none}
.play-cue svg{width:22px;height:22px;flex:none;transform:rotate(8deg);opacity:.85;animation:cueNudge 2.4s ease-in-out infinite}
.play-cue span{background:linear-gradient(90deg,var(--acc),var(--acc-2),var(--acc));background-size:200% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:cueShine 4s linear infinite}
.play-cue.played svg{animation:none;opacity:0;width:0;margin-right:-8px;transition:opacity .3s,width .3s}
.play-cue.played span{animation:none;background:none;color:var(--plat-2)}
@keyframes cueNudge{0%,100%{transform:rotate(8deg) translate(0,0)}50%{transform:rotate(8deg) translate(2px,3px)}}
@keyframes cueShine{to{background-position:-200% 0}}
@media (prefers-reduced-motion:reduce){.play-cue svg,.play-cue span{animation:none}}
/* ghost finger showing how to play (js/story.js) */
.play-wrap{position:relative}
.tap-ghost{position:absolute;left:0;top:0;width:44px;height:44px;margin:-6px 0 0 -14px;pointer-events:none;opacity:0;will-change:transform,opacity;z-index:2;transition:opacity .25s}
.tap-ghost svg{position:relative;width:44px;height:44px;fill:#fff;filter:drop-shadow(0 2px 6px rgba(0,0,0,.6)) drop-shadow(0 0 10px color-mix(in srgb,var(--acc) 70%,transparent))}
.tg-ring{position:absolute;left:3px;top:-4px;width:24px;height:24px;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--acc) 85%,transparent) 0 30%,color-mix(in srgb,var(--acc) 35%,transparent) 55%,transparent 72%);opacity:0;transform:scale(.4)}
.tap-ghost.press .tg-ring{animation:tgRing .6s ease-out}
.tap-ghost.gone{opacity:0!important;transition:opacity .4s}
@keyframes tgRing{0%{opacity:1;transform:scale(.5)}100%{opacity:0;transform:scale(2.6)}}
.play-cue span{transition:opacity .18s,transform .18s}.play-cue.swap span{opacity:0;transform:translateY(-4px)}
.play-cue.played span{color:var(--acc)}