/* Cromium Lab. A quiet notebook for personal experiments: ink on warm paper by day, graphite by night.
   One accent (jade) for "practice", one muted slate for "baseline". Numbers in tabular figures. */
@font-face{font-family:"Archivo";src:url(fonts/archivo.woff2) format("woff2");font-weight:100 900;font-stretch:62% 125%;font-display:swap}
:root{
  --bg:#f4f2ee;--card:#fffdf9;--ink:#15191d;--muted:#5d6670;--line:#e2ddd4;--soft:#ece8e0;
  --jade:#0f8f74;--jade-soft:#d7efe8;--slate:#7b8794;--slate-soft:#e4e8ec;--warn:#b5562b;--good:#0f8f74;--bad:#b5562b;
  --display:"Archivo","Arial Narrow",system-ui,sans-serif;--body:"Archivo",system-ui,-apple-system,"Segoe UI",sans-serif;
  color-scheme:light
}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#101418;--card:#171c21;--ink:#eef1f3;--muted:#9aa5b0;--line:#262d34;--soft:#1e252b;
  --jade:#38c9a5;--jade-soft:#17352e;--slate:#8c99a6;--slate-soft:#242c33;--warn:#f08a5d;--good:#38c9a5;--bad:#f08a5d;color-scheme:dark}}
:root[data-theme=dark]{--bg:#101418;--card:#171c21;--ink:#eef1f3;--muted:#9aa5b0;--line:#262d34;--soft:#1e252b;--jade:#38c9a5;--jade-soft:#17352e;--slate:#8c99a6;--slate-soft:#242c33;--warn:#f08a5d;--good:#38c9a5;--bad:#f08a5d;color-scheme:dark}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 var(--body);-webkit-text-size-adjust:100%}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;-webkit-tap-highlight-color:transparent}
.num{font-variant-numeric:tabular-nums}
.top{position:sticky;top:0;z-index:5;background:var(--bg);padding:calc(10px + env(safe-area-inset-top,0px)) max(16px,env(safe-area-inset-right,0px)) 10px max(16px,env(safe-area-inset-left,0px));border-bottom:1px solid var(--line)}
.top-in{max-width:640px;margin:0 auto;display:flex;align-items:center;gap:10px}
.brand{font-family:var(--display);font-weight:800;font-size:18px;letter-spacing:.01em;display:flex;align-items:center;gap:8px}
.mark{width:18px;height:18px;border-radius:50%;border:3px solid var(--jade);box-shadow:inset 0 0 0 3px var(--card)}
.phase{margin-left:auto;font-size:12.5px;font-weight:700;padding:4px 10px;border-radius:999px;background:var(--soft);color:var(--muted)}
.phase.p{background:var(--jade-soft);color:var(--jade)}
main{max-width:640px;margin:0 auto;padding:16px max(16px,env(safe-area-inset-right,0px)) calc(96px + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px));display:grid;gap:16px;outline:none}
.tabs{position:fixed;left:0;right:0;bottom:0;z-index:6;display:grid;grid-template-columns:repeat(4,1fr);background:var(--card);border-top:1px solid var(--line);padding:6px max(8px,env(safe-area-inset-right,0px)) calc(6px + env(safe-area-inset-bottom,0px)) max(8px,env(safe-area-inset-left,0px))}
.tabs button{border:0;background:none;display:grid;justify-items:center;gap:1px;padding:6px 0;font-size:12px;font-weight:650;color:var(--muted);border-radius:12px}
.tabs button .ti{font-size:18px;line-height:1}
.tabs button[aria-current=page]{color:var(--jade);background:var(--jade-soft)}
h1,h2,h3{margin:0;font-family:var(--display);line-height:1.15;text-wrap:balance}
h1{font-size:28px;font-weight:800}h2{font-size:20px;font-weight:750}h3{font-size:15px;font-weight:750}
p{margin:0}
.muted{color:var(--muted)}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:16px;display:grid;gap:12px;min-width:0}
.eyebrow{font-size:12px;font-weight:750;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.between{justify-content:space-between}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.btn{height:48px;padding:0 18px;border-radius:14px;border:0;background:var(--ink);color:var(--card);font-weight:750;font-size:15px;display:inline-flex;align-items:center;justify-content:center;gap:8px}
.btn.jade{background:var(--jade);color:#fff}
.btn.ghost{background:var(--soft);color:var(--ink)}
.btn.small{height:38px;padding:0 12px;font-size:13.5px;border-radius:11px}
.btn.wide{width:100%}
.btn:active{transform:scale(.98)}
.btn:focus-visible,.tabs button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--jade);outline-offset:2px}
label.f{display:grid;gap:5px;font-size:13.5px;font-weight:650;min-width:0}
label.f small{font-weight:500;color:var(--muted);font-size:12px}
input[type=number],input[type=text],input[type=date],textarea,select{width:100%;min-width:0;padding:11px 12px;border-radius:12px;border:1px solid var(--line);background:var(--bg);font-size:16px}
textarea{resize:vertical;min-height:72px}
.unit{display:flex;align-items:center;gap:6px}.unit input{flex:1}.unit span{font-size:13px;color:var(--muted);white-space:nowrap}
.scale{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}
.scale button{height:44px;border-radius:12px;border:1px solid var(--line);background:var(--bg);font-weight:750}
.scale button[aria-pressed=true]{background:var(--jade);border-color:var(--jade);color:#fff}
.toggle{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.toggle button{height:52px;border-radius:14px;border:1px solid var(--line);background:var(--bg);font-weight:750}
.toggle button[aria-pressed=true]{background:var(--jade);border-color:var(--jade);color:#fff}
.toggle button.no[aria-pressed=true]{background:var(--slate);border-color:var(--slate)}
.prog{height:8px;border-radius:999px;background:var(--soft);overflow:hidden;display:flex}
.prog i{display:block;height:100%}
.prog .b{background:var(--slate)}.prog .p{background:var(--jade)}
.stat{display:grid;gap:2px}.stat b{font-family:var(--display);font-size:26px;font-weight:800;line-height:1.1}.stat span{font-size:12.5px;color:var(--muted)}
.pill{display:inline-flex;align-items:center;gap:4px;font-size:12px;font-weight:750;padding:3px 9px;border-radius:999px;background:var(--soft);color:var(--muted)}
.pill.good{background:var(--jade-soft);color:var(--good)}.pill.bad{background:color-mix(in srgb,var(--bad) 15%,transparent);color:var(--bad)}
.list{display:grid;gap:0}.list .it{display:flex;align-items:center;gap:10px;padding:12px 0;border-top:1px solid var(--line)}.list .it:first-child{border-top:0}
.chart{width:100%;height:auto;display:block}
.chart .ax{stroke:var(--line);stroke-width:1}
.chart .bl{fill:var(--slate)}.chart .pr{fill:var(--jade)}
.chart .mb{stroke:var(--slate);stroke-width:2;stroke-dasharray:5 4}.chart .mp{stroke:var(--jade);stroke-width:2.5}
.chart text{fill:var(--muted);font-size:10px;font-family:var(--body)}
.chart .band{fill:var(--slate-soft)}
.note{border-left:3px solid var(--jade);padding:2px 0 2px 12px;font-size:14px;color:var(--muted)}
.warn{border-left-color:var(--warn)}
.toast{position:fixed;left:50%;bottom:calc(84px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--card);font-weight:700;font-size:14px;padding:10px 16px;border-radius:12px;z-index:9;max-width:calc(100% - 32px)}
.toast[hidden]{display:none}
/* Guided practice */
.guide{position:fixed;inset:0;z-index:20;background:radial-gradient(120% 80% at 50% 30%,#123b33,#0b1513 70%);color:#eef5f2;display:flex;flex-direction:column;
  padding:calc(12px + env(safe-area-inset-top,0px)) max(16px,env(safe-area-inset-right,0px)) calc(20px + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px))}
.guide[hidden]{display:none}
.g-top{display:flex;align-items:center;gap:10px;max-width:520px;width:100%;margin:0 auto}
.g-top b{flex:1;text-align:center;font-size:15px}
.g-x{width:44px;height:44px;border-radius:50%;border:0;background:rgba(255,255,255,.12);color:#fff;font-size:20px}
.g-left{width:44px;text-align:right;font-size:13px;opacity:.8}
.g-body{flex:1;display:grid;place-items:center;max-width:520px;width:100%;margin:0 auto;text-align:center}
.g-stage{position:relative;width:min(70vw,300px);aspect-ratio:1}
.g-orb{position:absolute;inset:0;margin:auto;border-radius:50%;width:45%;height:45%;background:radial-gradient(circle at 40% 35%,var(--oc,#7fe0c4),color-mix(in srgb,var(--oc,#7fe0c4) 35%,#0b1513));box-shadow:0 0 60px color-mix(in srgb,var(--oc,#7fe0c4) 55%,transparent);transition:width .4s linear,height .4s linear,background .8s ease,box-shadow .8s ease}
.g-ring{position:absolute;inset:0;border-radius:50%;border:2px solid rgba(255,255,255,.14)}
.g-txt{display:grid;gap:6px;margin-top:10px}
.g-step{font-size:13px;font-weight:750;letter-spacing:.08em;text-transform:uppercase;opacity:.75}
.g-title{font-family:var(--display);font-size:30px;font-weight:800;line-height:1.1}
.g-sound{font-family:var(--display);font-size:44px;font-weight:800;letter-spacing:.06em;color:var(--oc,#7fe0c4)}
.g-cue{font-size:16px;line-height:1.5;opacity:.9;max-width:440px;margin:0 auto}
.g-count{font-size:15px;opacity:.75}
.g-act{display:grid;grid-template-columns:1fr 1fr;gap:8px;max-width:520px;width:100%;margin:0 auto}
.g-act button{height:52px;border-radius:16px;border:0;background:rgba(255,255,255,.12);color:#fff;font-weight:750}
@media (prefers-reduced-motion:reduce){.g-orb{transition:none}}