/* H2B Session 1: page shell, beats, stage mode, lab timers, prompt blocks, presenter console, print.
   Same brand, type and colour system as the 30 Oct proposal site, so this reads as the next chapter.
   Stage mode (the default) shows one beat per screen on a 1440x900 design grid:
   1rem scales with min(viewport width / 1440, viewport height / 900). ?read is a long page. */

:root{
  --bg:#eef0e7;
  --surface:#f9faf6;
  --surface-2:#e4e9dd;
  --ink:#1e1f1e;
  --ink-2:#4b524c;
  --ink-3:#5f665f;
  --rule:#d3d9cd;
  --rule-2:#b6c0b3;
  --accent:#21694a;
  --accent-2:#23ad72;
  --accent-wash:#d6f6e5;
  --on-accent:#f3fbf6;
  --muted-mark:#a9b4a8;
  --risk:#633333;
  --risk-wash:#ffe7e5;
  --risk-mark:#633333;
  --warn:#fca93d;
  --warn-wash:#fff0d6;
  --warn-ink:#6b4a10;
  --good:#23ad72;
  --good-wash:#d9f5e7;
  --good-ink:#17583c;
  --band:#0b0e0c;
  --band-2:#151b18;
  --band-ink:#eef2ec;
  --band-ink-2:#a9b4ab;
  --band-rule:#29332d;
  --band-accent:#2bd99e;
  --lv0:#a9b4a8;
  --lv1:#7cc4a2;
  --lv2:#23ad72;
  --lv3:#21694a;
  --f-display:"Newsreader","Iowan Old Style","Palatino Linotype",Georgia,serif;
  --f-body:"Manrope","Avenir Next","Segoe UI",system-ui,-apple-system,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --f-num:"Barlow Condensed","Arial Narrow","Roboto Condensed",sans-serif;
  --f-mark:"Jura","Eurostile","Futura",sans-serif;
  --gutter-l:max(16px, env(safe-area-inset-left, 0px));
  --gutter-r:max(16px, env(safe-area-inset-right, 0px));
  --ease:cubic-bezier(.2,.7,.2,1);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0f1411; --surface:#151c18; --surface-2:#1d2621; --ink:#e9ede6; --ink-2:#b6bfb7; --ink-3:#93a097;
    --rule:#28322c; --rule-2:#3a4740; --accent:#2bd99e; --accent-2:#23ad72; --accent-wash:#132a20; --on-accent:#08140e; --muted-mark:#4d5a52;
    --risk:#ffb4ab; --risk-wash:#3a2222; --risk-mark:#d9645a;
    --warn:#fca93d; --warn-wash:#3a2e17; --warn-ink:#ffd89a;
    --good:#1f9e68; --good-wash:#163126; --good-ink:#9df0cf;
    --band:#070908; --band-2:#111613; --band-rule:#232c27;
    --lv0:#4d5a52; --lv1:#2f7d5c; --lv2:#23ad72; --lv3:#2bd99e;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0f1411; --surface:#151c18; --surface-2:#1d2621; --ink:#e9ede6; --ink-2:#b6bfb7; --ink-3:#93a097;
  --rule:#28322c; --rule-2:#3a4740; --accent:#2bd99e; --accent-2:#23ad72; --accent-wash:#132a20; --on-accent:#08140e; --muted-mark:#4d5a52;
  --risk:#ffb4ab; --risk-wash:#3a2222; --risk-mark:#d9645a;
  --warn:#fca93d; --warn-wash:#3a2e17; --warn-ink:#ffd89a;
  --good:#1f9e68; --good-wash:#163126; --good-ink:#9df0cf;
  --band:#070908; --band-2:#111613; --band-rule:#232c27;
  --lv0:#4d5a52; --lv1:#2f7d5c; --lv2:#23ad72; --lv3:#2bd99e;
  color-scheme:dark;
}
:root[data-theme="light"]{color-scheme:light}

/* ---------- base ---------- */
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-padding-top:90px}
@media (prefers-reduced-motion: no-preference){html.smooth:not(.is-stage){scroll-behavior:smooth}}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1rem/1.6 var(--f-body);font-variant-ligatures:no-contextual;font-feature-settings:"calt" 0,"dlig" 0;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top, 0px);z-index:40;background:var(--band)}
a{color:var(--accent);text-underline-offset:3px;text-decoration-thickness:1px}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
:root[data-theme="dark"] :focus-visible{outline-color:var(--accent-2)}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) :focus-visible{outline-color:var(--accent-2)}}
.topbar :focus-visible,.foot :focus-visible,.prompt-row :focus-visible,.pcard :focus-visible{outline-color:var(--band-accent)}
h1,h2,h3,h4{margin:0;text-wrap:balance;font-weight:500}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
figure,blockquote,dl,dd{margin:0}
button,input,select,textarea{font:inherit;color:inherit}
button{-webkit-tap-highlight-color:transparent;touch-action:manipulation}
svg{display:block}
code{font-family:var(--f-mono)}
kbd{display:inline-flex;align-items:center;justify-content:center;min-width:1.9em;padding:.2em .45em;border-radius:4px;border:1px solid var(--rule-2);border-bottom-width:2px;background:var(--surface);font:600 .82em/1.2 var(--f-mono);color:var(--ink)}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip{position:absolute;left:12px;top:-60px;z-index:100;background:var(--accent);color:var(--on-accent);padding:10px 14px;border-radius:4px;font-weight:700;text-decoration:none}
.skip:focus{top:calc(env(safe-area-inset-top, 0px) + 10px)}
.wrap{max-width:1120px;margin:0 auto;padding-left:var(--gutter-l);padding-right:var(--gutter-r)}
.deck:focus{outline:none}

/* ---------- top bar (read mode) ---------- */
.topbar{position:-webkit-sticky;position:sticky;top:env(safe-area-inset-top, 0px);z-index:30;background:var(--band);color:var(--band-ink);border-bottom:1px solid var(--band-rule)}
.topbar .wrap{position:relative;display:flex;align-items:center;gap:12px;min-height:58px;max-width:1320px}
.brand{display:flex;align-items:center;gap:14px;min-height:44px;text-decoration:none;color:var(--band-ink);flex:none}
.wordmark{font:300 17px/1 var(--f-mark);letter-spacing:.32em;text-transform:uppercase;white-space:nowrap}
.brand-sub{font:500 10.5px/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--band-ink-2);padding-left:14px;border-left:1px solid var(--band-rule);white-space:nowrap}
.nav{flex:1;min-width:0;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.nav::-webkit-scrollbar{display:none}
.nav ul{display:flex;gap:2px;white-space:nowrap}
.nav a{display:flex;align-items:center;min-height:44px;padding:0 10px;border-radius:4px;font:500 13.5px/1 var(--f-body);color:var(--band-ink-2);text-decoration:none}
.nav a:hover{color:var(--band-ink);background:var(--band-2)}
.nav a[aria-current="true"]{color:var(--band-ink);box-shadow:inset 0 -2px 0 var(--band-accent)}
.theme-btn,.present-btn{flex:none;min-height:44px;background:transparent;border:1px solid var(--band-rule);color:var(--band-ink-2);border-radius:999px;padding:0 14px;font:500 12px/1 var(--f-mono);cursor:pointer}
.theme-btn:hover,.present-btn:hover{color:var(--band-ink);border-color:var(--band-ink-2)}
.present-btn{color:#08140e;background:var(--band-accent);border-color:var(--band-accent);font-weight:600}
.present-btn:hover{color:#08140e;filter:brightness(1.08)}
.progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--band-accent);transform-origin:0 50%;transform:scaleX(var(--p,0))}
@media (max-width:980px){.brand-sub{display:none}}
@media (max-width:760px){
  .topbar .wrap{flex-wrap:wrap;gap:6px 10px;padding-top:8px;padding-bottom:2px}
  .brand{margin-right:auto}
  .nav{order:5;flex-basis:100%}
  .present-btn{display:none}
}
@media (max-width:400px){.wordmark{font-size:14px;letter-spacing:.24em}}

/* ---------- beats (read mode) ---------- */
.beat{position:relative;padding-block:64px 60px;background:var(--bg)}
.beat + .beat{border-top:1px solid var(--rule)}
.vis-missing{display:none!important}
.beat-in{max-width:1120px;margin:0 auto;padding-left:var(--gutter-l);padding-right:var(--gutter-r);display:flex;flex-direction:column;gap:22px}
.beat-in > *{min-width:0}
.beat-title{font:500 clamp(1.9rem,3.6vw,2.8rem)/1.08 var(--f-display);letter-spacing:-.012em;max-width:28ch}
.eyebrow,.kicker{display:flex;align-items:center;gap:10px;font:500 11.5px/1.4 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}
.kicker + .beat-title,.eyebrow + .beat-title{margin-top:-8px}
.lede,.sub{font-size:clamp(1.06rem,1.6vw,1.2rem);line-height:1.58;color:var(--ink-2);max-width:62ch}
.small-print{font-size:.95rem;line-height:1.5;color:var(--ink-2);max-width:72ch}

/* principle badge: P1 to P6, reused in kickers, badges and the recap card */
.pb{display:inline-grid;place-items:center;min-width:2.15em;height:1.75em;padding:0 .4em;border-radius:5px;background:var(--accent);color:var(--on-accent);font:600 1.05em/1 var(--f-num);letter-spacing:.04em;font-variant-numeric:tabular-nums;flex:none}
.kicker .pb{font-size:15px}
.badges{display:flex;flex-wrap:wrap;gap:10px}
.badges li{display:inline-flex;align-items:center;gap:10px;padding:6px 14px 6px 6px;border-radius:999px;background:var(--surface);box-shadow:inset 0 0 0 1px var(--rule-2);font:600 .95rem/1.3 var(--f-body)}
.badges .pb{font-size:15px}

/* numbered badge */
.popt-n{display:grid;place-items:center;width:2rem;height:2rem;border-radius:6px;background:var(--accent-wash);color:var(--accent);font:600 1.15rem/1 var(--f-num);flex:none;font-variant-numeric:tabular-nums}

/* chapter bands (read mode) */
.levelband{background:var(--surface-2);border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.levelband .wrap{padding-block:28px 26px;display:grid;grid-template-columns:auto minmax(0,1fr);gap:14px 32px;align-items:center}
.lv-num{font:600 clamp(3.2rem,6vw,4.6rem)/.8 var(--f-num);color:var(--accent);min-width:.6em}
.lv-num:empty,.lf-num:empty{display:none}
.levelband .wrap:has(.lv-num:empty){grid-template-columns:minmax(0,1fr)}
.lv-txt{display:grid;gap:6px}
.lv-txt h2{font:500 clamp(1.6rem,3vw,2.2rem)/1.1 var(--f-display)}

/* ---------- the stepping stones: Jess, then five labs (signature element) ---------- */
.stones{display:flex;align-items:center;gap:6px;flex-wrap:nowrap}
.stones .st{display:flex;align-items:center;gap:6px;color:var(--ink-3)}
.stones .st-p{display:grid;place-items:center;width:26px;height:20px;border-radius:50%/50%;background:var(--surface-2);box-shadow:inset 0 0 0 1.5px var(--rule-2);font:600 13px/1 var(--f-num);color:var(--ink-3)}
.stones .st-l{display:none}
.stones .st.is-done .st-p{background:var(--accent-wash);box-shadow:inset 0 0 0 1.5px var(--accent);color:var(--accent)}
.stones .st.is-here .st-p{width:30px;height:23px;background:var(--accent);box-shadow:none;color:var(--on-accent)}
.stones .st.is-here .st-l{display:inline;font:600 13px/1.2 var(--f-body);letter-spacing:0;text-transform:none;color:var(--ink)}
.stones .st.is-here .st-k{display:none}
.stones .st + .st::before{content:"";width:10px;height:2px;border-radius:1px;background:var(--rule-2);margin-right:0}

/* the big path on the welcome beat */
.stones.is-big{position:relative;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));align-items:start;gap:0}
.stones.is-big::before{content:"";position:absolute;left:calc(100% / 12);right:calc(100% / 12);top:27px;border-top:2px dashed var(--rule-2);z-index:0}
.stones.is-big li{position:relative;z-index:1;display:grid;justify-items:center;gap:10px;text-align:center}
.stones.is-big .st + .st::before{display:none}
.stones.is-big .st-p{width:72px;height:54px;border-radius:50%;background:var(--surface);box-shadow:inset 0 0 0 2px var(--rule-2),0 6px 0 -2px var(--surface-2);font-size:24px;color:var(--accent)}
.stones.is-big .st:nth-child(odd) .st-p{border-radius:46% 54% 50% 50% / 55% 50% 50% 45%}
.stones.is-big .st:nth-child(even) .st-p{border-radius:54% 46% 52% 48% / 48% 55% 45% 52%}
.stones.is-big .st-l{display:grid;gap:2px;justify-items:center}
.stones.is-big .st-k{display:block;font:500 11px/1.2 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
.stones.is-big .st-n{font:500 1.05rem/1.2 var(--f-display);color:var(--ink)}
.st-jess .st-fig{position:relative;display:block;width:54px;height:54px}
.st-jess .st-fig::before{content:"";position:absolute;left:50%;top:2px;width:20px;height:20px;margin-left:-10px;border-radius:50%;background:var(--accent)}
.st-jess .st-fig::after{content:"";position:absolute;left:50%;bottom:2px;width:38px;height:26px;margin-left:-19px;border-radius:19px 19px 6px 6px;background:var(--accent)}
.st-jess .st-l{font:700 .95rem/1.2 var(--f-body);color:var(--accent)}

/* ---------- welcome ---------- */
.welcome-row{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.4fr);gap:28px 48px;align-items:center;padding-top:6px}
.leave{display:grid;gap:12px;padding:18px 20px 20px;border-radius:10px;background:var(--surface);box-shadow:inset 0 0 0 1px var(--rule)}
.leave-h{font:500 11.5px/1.3 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}
.leave-list{display:grid;gap:10px}
.leave-list li{display:grid;grid-template-columns:auto minmax(0,1fr);gap:12px;align-items:center;font:600 1.08rem/1.35 var(--f-body)}
.path-wrap{display:grid;gap:18px}
.agenda-row{font:500 12.5px/1.4 var(--f-mono);letter-spacing:.06em;color:var(--ink-3);text-align:center}
@media (max-width:900px){.welcome-row{grid-template-columns:1fr}}
@media (max-width:560px){
  .stones.is-big{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:22px}
  .stones.is-big::before{display:none}
  .stones.is-big .st-p{width:58px;height:44px;font-size:20px}
  .st-jess .st-fig{width:44px;height:44px}
}

/* ---------- principle beats ---------- */
.three-words{display:flex;flex-wrap:wrap;gap:8px;counter-reset:tw}
.three-words li{counter-increment:tw;display:inline-flex;align-items:center;gap:9px;padding:6px 14px 6px 6px;border-radius:999px;background:var(--surface);box-shadow:inset 0 0 0 1px var(--rule-2);font:600 .98rem/1.3 var(--f-body)}
.three-words li::before{content:counter(tw);display:grid;place-items:center;width:1.6em;height:1.6em;border-radius:50%;background:var(--accent-wash);color:var(--accent);font:600 .95rem/1 var(--f-num)}

/* ---------- lab beats ---------- */
.lab-head{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px}
.lab-head .kicker{margin-right:auto}
.lab-head .stones{order:2}
.lab-head .labtimer{order:3}

/* lab timer: a chip that counts down the lab's minutes; never moves the slides */
.labtimer{display:inline-flex;align-items:center;gap:10px;padding:5px 6px 5px 10px;border-radius:999px;background:var(--surface);box-shadow:inset 0 0 0 1px var(--rule-2);font:600 13px/1 var(--f-body);color:var(--ink-2)}
.lt-ring{width:18px;height:18px;border-radius:50%;flex:none;background:conic-gradient(var(--accent) calc(var(--f,1) * 360deg),var(--surface-2) 0);-webkit-mask:radial-gradient(circle,transparent 42%,#000 44%);mask:radial-gradient(circle,transparent 42%,#000 44%)}
.lt-k{font:500 12px/1.2 var(--f-mono);letter-spacing:.04em;color:var(--ink-3);white-space:nowrap}
.lt-t{font:600 1.35rem/1 var(--f-num);font-variant-numeric:tabular-nums;color:var(--ink);min-width:3.1em;text-align:right;white-space:nowrap}
.lt-btns{display:inline-flex;gap:4px}
.lt-btn{min-height:32px;padding:0 11px;border-radius:999px;border:1px solid var(--rule-2);background:var(--bg);color:var(--ink);font:600 12.5px/1 var(--f-body);cursor:pointer}
.lt-btn[data-act="toggle"]{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.lt-btn:hover{filter:brightness(1.06)}
.labtimer[data-state="run"] .lt-btn[data-act="toggle"]{background:var(--bg);color:var(--ink);border-color:var(--rule-2)}
.labtimer[data-state="paused"]{box-shadow:inset 0 0 0 1px var(--rule-2);background:var(--surface-2)}
.labtimer[data-state="paused"] .lt-t{color:var(--ink-3)}
/* over time: amber, never red, no sound */
.labtimer[data-state="over"]{background:var(--warn-wash);box-shadow:inset 0 0 0 1.5px var(--warn)}
.labtimer[data-state="over"] .lt-t{color:var(--warn-ink);min-width:0}
.labtimer[data-state="over"] .lt-ring{background:var(--warn)}
/* the reading page shows the time box, not a live countdown */
html:not(.is-stage) .labtimer{padding:6px 12px}
html:not(.is-stage) .labtimer .lt-ring,html:not(.is-stage) .labtimer .lt-t,html:not(.is-stage) .labtimer .lt-btns{display:none}

/* numbered steps */
.go-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:26px 40px;align-items:start}
.go-col{display:grid;gap:20px;align-content:start}
.steps{display:grid;gap:4px;counter-reset:none}
.steps li{display:grid;grid-template-columns:2rem minmax(0,1fr);gap:14px;align-items:start;padding:9px 0;border-bottom:1px solid var(--rule)}
.steps li:last-child{border-bottom:0}
.steps .sn{display:grid;place-items:center;width:2rem;height:2rem;border-radius:50%;background:var(--accent);color:var(--on-accent);font:600 1.15rem/1 var(--f-num);font-variant-numeric:tabular-nums}
.steps p{font-size:1.06rem;line-height:1.5;padding-top:.2em}
.steps.is-tight li{padding:6px 0}
@media (max-width:900px){.go-grid{grid-template-columns:1fr}}

/* the copyable prompt: exact text in mono, one big Copy button */
.prompt{display:grid;gap:8px}
.prompt-k{font:500 11.5px/1.3 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}
.prompt-row{display:flex;align-items:center;gap:10px;padding:8px 8px 8px 18px;border-radius:10px;background:var(--band);color:var(--band-ink);box-shadow:inset 0 0 0 1px var(--band-rule),inset 4px 0 0 var(--band-accent)}
.prompt-t{flex:1;min-width:0;font:500 1.05rem/1.45 var(--f-mono);color:var(--band-ink);overflow-wrap:anywhere;-webkit-user-select:all;user-select:all}
.copy-btn{flex:none;min-height:46px;min-width:6.4em;padding:0 18px;border-radius:8px;border:0;background:var(--band-accent);color:#08140e;font:700 1rem/1 var(--f-body);cursor:pointer}
.copy-btn:hover{filter:brightness(1.08)}
.copy-btn.is-done{background:var(--band-ink);color:#08140e}
.prompt.is-small .prompt-t{font-size:.98rem}
@media (max-width:520px){.prompt-row{flex-wrap:wrap;padding:12px}.copy-btn{width:100%}}

/* small helpers on the lab slides */
.aside{color:var(--ink-3);font-weight:400}
.kit-line{font-size:1.06rem;line-height:1.5;color:var(--ink-2);max-width:70ch}
.kit-line b{color:var(--ink);font-weight:700}
.btn-note{font-size:.92rem;line-height:1.4;color:var(--ink-3)}
.prompt.is-suggested .prompt-row{background:var(--surface);color:var(--ink);box-shadow:inset 0 0 0 1px var(--rule-2),inset 4px 0 0 var(--accent)}
.prompt.is-suggested .prompt-t{color:var(--ink)}
.prompt.is-suggested .copy-btn{background:var(--accent);color:var(--on-accent)}
.save-step{display:flex;align-items:center;gap:14px;padding:12px 16px;border-radius:10px;background:var(--accent-wash);font:600 1.06rem/1.45 var(--f-body);color:var(--ink)}
.save-step .sn{display:grid;place-items:center;flex:none;width:2rem;height:2rem;border-radius:50%;background:var(--accent);color:var(--on-accent);font:700 1rem/1 var(--f-body)}
.beat-title .ta-b{display:none}
.welcome-mark{display:none}

/* what just happened */
.why-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:24px 44px;align-items:center}
.why-txt{display:grid;gap:18px;align-content:start}
@media (max-width:900px){.why-grid{grid-template-columns:1fr}}

/* when it goes wrong */
.trouble{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.trouble li{display:grid;grid-template-columns:auto minmax(0,1fr);gap:14px;align-items:start;padding:16px 18px;border-radius:10px;background:var(--surface);box-shadow:inset 0 0 0 1px var(--rule)}
.tr-ic{width:30px;height:30px;padding:5px;border-radius:8px;background:var(--accent-wash);fill:none;stroke:var(--accent);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}
.trouble h3{font:700 1.05rem/1.3 var(--f-body);margin-bottom:4px}
.trouble p{font-size:1rem;line-height:1.5;color:var(--ink-2)}
@media (max-width:760px){.trouble{grid-template-columns:1fr}}

/* Lab 4: three fixes */
.fix-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px 40px;align-items:start}
.fix-groups{display:grid;gap:22px}
.fix-group{display:grid;gap:10px}
.fix-group h3{display:flex;align-items:baseline;flex-wrap:wrap;gap:4px 10px;font:500 1.4rem/1.2 var(--f-display)}
.fg-l{display:inline-grid;place-items:center;width:1.5em;height:1.5em;border-radius:6px;background:var(--accent);color:var(--on-accent);font:600 .9em/1 var(--f-num);align-self:center}
.fg-why{font:500 .95rem/1.3 var(--f-body);color:var(--ink-3)}
.rule-quote{padding:2px 0 2px 16px;border-left:3px solid var(--accent)}
.rule-quote p{font:italic 400 1.2rem/1.42 var(--f-display);color:var(--ink)}
@media (max-width:900px){.fix-grid{grid-template-columns:1fr}}

/* recap card: high contrast, sized for a screenshot */
.pcard{--ink:var(--band-ink);--ink-2:var(--band-ink-2);display:grid;gap:18px;padding:30px 32px 26px;border-radius:14px;background:var(--band);color:var(--band-ink);box-shadow:inset 0 0 0 1px var(--band-rule);max-width:900px}
.pcard-k{font:500 11.5px/1.3 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--band-accent)}
.pcard-h{color:var(--band-ink)}
.pcard-list{display:grid;gap:2px}
.pcard-list li{display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px;align-items:baseline;padding:10px 0;border-top:1px solid var(--band-rule)}
.pcard-list .pb{background:var(--band-accent);color:#08140e;font-size:16px;transform:translateY(-.1em)}
.pcard-list p{font-size:1.08rem;line-height:1.45;color:var(--band-ink)}
.pcard-foot{font:500 12px/1.4 var(--f-mono);letter-spacing:.06em;color:var(--band-ink-2);padding-top:12px;border-top:1px solid var(--band-rule)}
.shot-hint{font:500 12px/1.3 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
html:not(.is-stage) .shot-hint{display:none}

/* what happens next */
.next-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:24px 48px;align-items:start}
.next-list{display:grid}
.next-list li{display:grid;grid-template-columns:2rem minmax(0,1fr);gap:14px;align-items:start;padding:11px 0;border-bottom:1px solid var(--rule)}
.next-list li:last-child{border-bottom:0}
.next-list p{line-height:1.5;padding-top:.15em}
.later{display:grid;gap:12px}
.later-h{font:500 1.15rem/1.3 var(--f-display);color:var(--ink-2)}
.ladder{display:grid;gap:6px}
.ladder li{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:10px;align-items:center;padding:8px 12px;border-radius:8px;background:var(--surface);box-shadow:inset 0 0 0 1px var(--rule);color:var(--ink-2)}
.ladder li:nth-child(2){margin-left:18px}
.ladder li:nth-child(3){margin-left:36px}
.ladder li:nth-child(4){margin-left:54px}
.lock{width:18px;height:18px;fill:none;stroke:var(--ink-3);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.ld-t{font-weight:600;color:var(--ink)}
.ld-k{font:500 11px/1.2 var(--f-mono);letter-spacing:.06em;color:var(--ink-3);white-space:nowrap}
@media (max-width:900px){.next-grid{grid-template-columns:1fr}}
@media (max-width:420px){.ladder li{grid-template-columns:auto minmax(0,1fr)}.ld-k{grid-column:2}.ladder li:nth-child(n){margin-left:0}}

/* close */
.beat-close .beat-title{font-size:clamp(2.4rem,6vw,4.4rem);line-height:1.02;max-width:none}
.beat-close .sub{font-family:var(--f-display);font-size:clamp(1.3rem,2.4vw,1.8rem);color:var(--ink)}
.close-foot{font:500 12px/1.5 var(--f-mono);letter-spacing:.04em;color:var(--ink-3);padding-top:18px;border-top:1px solid var(--rule);max-width:70ch}

/* visuals (contract: visuals.js renders inside .visual) */
.vis-wrap{position:relative;display:grid;gap:8px}
.vis-scroll{overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch;overscroll-behavior-x:contain;scrollbar-width:thin}
.visual{position:relative;min-height:60px}
.visual:not(.is-mounted){min-height:200px}
.swipe-hint{display:none;font:500 11.5px/1.3 var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);order:-1}
.vis-wrap.is-wide .swipe-hint{display:block}
.replay{justify-self:end;display:inline-flex;align-items:center;gap:7px;min-height:44px;padding:0 14px;border-radius:999px;border:1px solid var(--rule-2);background:transparent;color:var(--ink-2);font:600 .85rem/1 var(--f-body);cursor:pointer}
.replay:hover{color:var(--ink);border-color:var(--accent)}
.replay svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.8}

/* footer */
.foot{background:var(--band);color:var(--band-ink-2)}
.foot .wrap{padding-block:36px calc(44px + env(safe-area-inset-bottom, 0px));display:flex;flex-wrap:wrap;gap:16px 40px;align-items:start;justify-content:space-between}
.foot .wordmark{color:var(--band-ink);font-size:14px;padding-top:4px}
.foot-txt{display:grid;gap:6px;max-width:72ch}
.foot p{font-size:13.5px;line-height:1.6;overflow-wrap:anywhere}

/* stage chrome, flash and key map: hidden outside stage mode */
.stage-ui{display:none}
.levelflash{display:none}
.keymap{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:20px;background:color-mix(in srgb,var(--band) 62%,transparent);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}
.km-card{width:min(640px,100%);max-height:calc(100svh - 40px);overflow:auto;background:var(--surface);color:var(--ink);border-radius:12px;padding:24px 26px;box-shadow:0 30px 60px -30px rgba(0,0,0,.6)}
.km-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.km-top h2{font:500 1.6rem/1.1 var(--f-display)}
.km-close{min-height:44px;padding:0 16px;border-radius:999px;border:1px solid var(--rule-2);background:transparent;cursor:pointer;font:600 .9rem/1 var(--f-body)}
.km-list{display:grid}
.km-list > div{display:grid;grid-template-columns:minmax(0,15em) minmax(0,1fr);gap:16px;padding:9px 0;border-top:1px solid var(--rule);align-items:center}
.km-list dt{display:flex;flex-wrap:wrap;gap:4px;align-items:center;font-size:.85rem;color:var(--ink-3)}
.km-list dd{font-size:.98rem}
@media (max-width:520px){.km-list > div{grid-template-columns:1fr;gap:4px}}

/* =====================================================================
   STAGE MODE (the default view)
   ===================================================================== */
html.is-stage{--u:min(calc(100vw / 1440), calc(100svh / 900), 1.5px);font-size:calc(var(--u) * 16);overflow:hidden;scroll-behavior:auto}
@supports not (height:100svh){html.is-stage{--u:min(calc(100vw / 1440), calc(100vh / 900), 1.5px)}}
html.is-stage body{overflow:hidden;height:100svh;overscroll-behavior:none}
@supports not (height:100svh){html.is-stage body{height:100vh}}
html.is-stage .topbar,html.is-stage .foot,html.is-stage .levelband,html.is-stage .skip{display:none}
html.is-stage .deck{position:fixed;inset:0;overflow:hidden;overflow:clip;background:var(--bg)}
html.is-stage .beat{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;justify-content:safe center;padding:3.4rem max(7.5rem, calc((100vw - 75rem) / 2)) 4.4rem;border:0;opacity:0;visibility:hidden;pointer-events:none;transform:translateX(2.5rem);transition:opacity .34s var(--ease),transform .42s var(--ease),visibility 0s linear .42s;overflow:hidden;overflow:clip}
html.is-stage .beat.is-before{transform:translateX(-2.5rem)}
html.is-stage .beat.is-current{opacity:1;visibility:visible;pointer-events:auto;transform:none;transition-delay:0s}
html.is-stage .beat-in{width:100%;max-width:75rem;margin:0 auto;padding:0;gap:1.4rem}

/* stage type: 1rem = 16px at 1440x900; nothing on stage is set below 1rem */
html.is-stage .beat-title{font-size:4.5rem;line-height:1.04;letter-spacing:-.018em;max-width:none}
html.is-stage .eyebrow,html.is-stage .kicker{font-size:1rem;letter-spacing:.14em;gap:.8rem}
html.is-stage .kicker .pb{font-size:1.25rem}
html.is-stage .kicker + .beat-title,html.is-stage .eyebrow + .beat-title{margin-top:-.4rem}
html.is-stage .lede,html.is-stage .sub{font-size:1.5rem;line-height:1.46;max-width:58ch}
html.is-stage .small-print{font-size:1.1rem;max-width:none}
html.is-stage .popt-n{width:2.4rem;height:2.4rem;font-size:1.5rem;border-radius:.4rem}
html.is-stage .badges{gap:.7rem}
html.is-stage .badges li{font-size:1.15rem;padding:.4rem 1.1rem .4rem .4rem;gap:.7rem}
html.is-stage .badges .pb{font-size:1.25rem}

/* dense beats: a smaller title, top aligned so the title holds still while steps change */
html.is-stage .beat-principle .beat-title,html.is-stage .beat-go .beat-title,html.is-stage .beat-see .beat-title,html.is-stage .beat-why .beat-title,html.is-stage .beat-wrong .beat-title,html.is-stage .beat-fixes .beat-title,html.is-stage .beat-next .beat-title{font-size:3.4rem;line-height:1.06}
html.is-stage .beat-principle .lede,html.is-stage .beat-see .lede,html.is-stage .beat-fixes .lede{font-size:1.35rem;line-height:1.42;max-width:66ch}
html.is-stage .beat-principle,html.is-stage .beat-go,html.is-stage .beat-see,html.is-stage .beat-fixes,html.is-stage .beat-wrong,html.is-stage .beat-next,html.is-stage .beat-why{justify-content:flex-start;padding-top:3.9rem}
/* what just happened: header holds its place at the top, the content sits in the middle of the rest */
html.is-stage .beat-why .beat-in{flex:1}
html.is-stage .beat-why .why-grid{margin-block:auto}
html.is-stage .beat-principle .beat-in{gap:1.2rem}

/* lab beats use an 80 rem column */
html.is-stage .beat-go,html.is-stage .beat-see,html.is-stage .beat-why,html.is-stage .beat-wrong,html.is-stage .beat-fixes{padding-left:max(5rem, calc((100vw - 80rem) / 2));padding-right:max(5rem, calc((100vw - 80rem) / 2))}
html.is-stage .beat-go .beat-in,html.is-stage .beat-see .beat-in,html.is-stage .beat-why .beat-in,html.is-stage .beat-wrong .beat-in,html.is-stage .beat-fixes .beat-in{max-width:80rem;gap:1.1rem}

/* stage visual boxes */
html.is-stage .vis-wrap{width:var(--vis-w,75rem);max-width:100%;align-self:center}
html.is-stage .vis-scroll{overflow:visible}
html.is-stage .visual{width:100%;height:var(--vis-h,28rem);min-height:0;overflow:hidden;overflow:clip}
html.is-stage .visual > *{max-width:100%;max-height:100%}
html.is-stage .replay,html.is-stage .swipe-hint{display:none}
html.is-stage .beat-principle{--vis-w:75rem;--vis-h:29rem}
html.is-stage #p2-project{--vis-h:26rem}
html.is-stage #p5-flags{--vis-h:27rem}
html.is-stage .beat-go{--vis-w:100%;--vis-h:27rem}
html.is-stage .beat-see{--vis-w:80rem;--vis-h:32rem}
html.is-stage #lab1-see{--vis-h:33rem}
html.is-stage #lab3-see{--vis-h:36rem}
html.is-stage #lab4-see{--vis-h:35rem}
html.is-stage #lab5-see{--vis-h:33rem}
html.is-stage .beat-why{--vis-w:100%;--vis-h:30rem}
html.is-stage .beat-fixes{--vis-w:100%;--vis-h:30rem}
html.is-stage .beat-next{--vis-w:75rem;--vis-h:12.5rem}

/* phases and step reveals (read mode shows everything) */
html.is-stage [data-sb-phase]:not(.is-on){display:none}
html.is-stage [data-sb-at]{transition:opacity .45s var(--ease),transform .5s var(--ease),visibility 0s}
html.is-stage [data-sb-at]:not(.is-on){opacity:0;visibility:hidden;transform:translateY(.8rem)}

/* entry choreography: one short stagger on the current beat */
@media (prefers-reduced-motion: no-preference){
  html.is-stage .beat.is-current .beat-in > *{animation:rise .6s var(--ease) both}
  html.is-stage .beat.is-current .beat-in > :nth-child(2){animation-delay:60ms}
  html.is-stage .beat.is-current .beat-in > :nth-child(3){animation-delay:120ms}
  html.is-stage .beat.is-current .beat-in > :nth-child(n+4){animation-delay:180ms}
}
@keyframes rise{from{opacity:0;transform:translateY(1rem)}}

/* stage: welcome */
html.is-stage .beat-welcome .beat-in{gap:1.3rem}
html.is-stage .welcome-mark{display:block;color:var(--ink-2)}
html.is-stage .welcome-mark .wordmark{font-size:1.2rem}
html.is-stage .beat-welcome .beat-title{font-size:5.6rem;line-height:1;letter-spacing:-.024em}
html.is-stage .beat-welcome .sub{font-size:1.6rem;max-width:52ch}
html.is-stage .welcome-row{grid-template-columns:22rem minmax(0,1fr);gap:2rem 4rem;padding-top:1.4rem}
html.is-stage .leave{gap:1rem;padding:1.4rem 1.6rem 1.6rem;border-radius:.8rem}
html.is-stage .leave-h{font-size:1rem}
html.is-stage .leave-list{gap:.8rem}
html.is-stage .leave-list li{font-size:1.3rem;gap:1rem}
html.is-stage .path-wrap{gap:1.6rem}
html.is-stage .agenda-row{font-size:1.1rem}
html.is-stage .stones.is-big::before{top:2.2rem;border-top-width:.15rem}
html.is-stage .stones.is-big li{gap:.8rem}
html.is-stage .stones.is-big .st-p{width:6rem;height:4.4rem;font-size:2rem;box-shadow:inset 0 0 0 .15rem var(--rule-2),0 .45rem 0 -.15rem var(--surface-2)}
html.is-stage .stones.is-big .st-k{font-size:1rem}
html.is-stage .stones.is-big .st-n{font-size:1.4rem}
html.is-stage .st-jess .st-fig{width:4.4rem;height:4.4rem}
html.is-stage .st-jess .st-fig::before{width:1.6rem;height:1.6rem;margin-left:-.8rem;top:.15rem}
html.is-stage .st-jess .st-fig::after{width:3.1rem;height:2.1rem;margin-left:-1.55rem;border-radius:1.55rem 1.55rem .5rem .5rem;bottom:.15rem}
html.is-stage .st-jess .st-l{font-size:1.25rem}

/* stage: principles */
html.is-stage .three-words{gap:.6rem}
html.is-stage .three-words li{font-size:1.2rem;padding:.35rem 1.1rem .35rem .35rem;gap:.7rem}
html.is-stage .three-words li::before{font-size:1.15rem}

/* stage: lab header */
html.is-stage .lab-head{flex-wrap:nowrap;gap:.8rem 1.3rem;min-height:3rem}
html.is-stage .lab-head .kicker{white-space:nowrap;letter-spacing:.12em}
html.is-stage .stones{gap:.45rem}
html.is-stage .stones .st{gap:.45rem}
html.is-stage .stones .st-p{width:2.1rem;height:1.6rem;font-size:1.05rem;box-shadow:inset 0 0 0 .12rem var(--rule-2)}
html.is-stage .stones .st.is-done .st-p{box-shadow:inset 0 0 0 .12rem var(--accent)}
html.is-stage .stones .st.is-here .st-p{width:2.5rem;height:1.9rem;box-shadow:none}
html.is-stage .stones .st.is-here .st-l{font-size:1.1rem}
html.is-stage .stones .st + .st::before{width:.8rem;height:.15rem}
html.is-stage .labtimer{gap:.75rem;padding:.35rem .4rem .35rem .8rem;font-size:1rem}
html.is-stage .lt-ring{width:1.4rem;height:1.4rem}
html.is-stage .lt-k{font-size:1rem}
html.is-stage .lt-t{font-size:1.9rem}
html.is-stage .lt-btns{gap:.3rem}
html.is-stage .lt-btn{min-height:2.4rem;padding:0 .9rem;font-size:1rem}
/* on stage Reset is a small round icon button; its name stays in aria-label */
html.is-stage .lt-btn[data-act="reset"]{position:relative;width:2.4rem;padding:0;font-size:0;color:var(--ink-2)}
html.is-stage .lt-btn[data-act="reset"]::before{content:"";position:absolute;inset:0;margin:auto;width:1.05rem;height:1.05rem;background:currentColor;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='black' stroke-width='1.8' stroke-linecap='round'%3E%3Cpath d='M2.5 8a5.5 5.5 0 1 0 1.7-4'/%3E%3Cpath d='M2.2 1.8v3.4h3.4'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='black' stroke-width='1.8' stroke-linecap='round'%3E%3Cpath d='M2.5 8a5.5 5.5 0 1 0 1.7-4'/%3E%3Cpath d='M2.2 1.8v3.4h3.4'/%3E%3C/svg%3E") center/contain no-repeat}

/* stage: your turn */
html.is-stage .go-grid{grid-template-columns:minmax(0,1fr) 34rem;gap:1.5rem 3rem}
html.is-stage .go-col{gap:1.3rem}
html.is-stage .steps{gap:0}
html.is-stage .steps li{grid-template-columns:2.4rem minmax(0,1fr);gap:1rem;padding:.6rem 0}
html.is-stage .steps .sn{width:2.4rem;height:2.4rem;font-size:1.45rem}
html.is-stage .steps p{font-size:1.4rem;line-height:1.38;padding-top:.15em}
html.is-stage .steps.is-tight li{padding:.42rem 0}
html.is-stage .steps.is-tight p{font-size:1.25rem}
html.is-stage .prompt{gap:.5rem}
html.is-stage .prompt-k{font-size:1rem}
html.is-stage .prompt-row{gap:1rem;padding:.6rem .6rem .6rem 1.4rem;border-radius:.7rem;box-shadow:inset 0 0 0 1px var(--band-rule),inset .3rem 0 0 var(--band-accent)}
html.is-stage .prompt-t{font-size:1.55rem;line-height:1.38}
html.is-stage .copy-btn{min-height:3.6rem;min-width:8rem;padding:0 1.5rem;border-radius:.55rem;font-size:1.3rem}
html.is-stage .prompt.is-small .prompt-t{font-size:1.3rem}
html.is-stage .prompt.is-small .copy-btn{min-height:3rem;min-width:7rem;font-size:1.15rem}
html.is-stage .prompt.is-suggested .prompt-row{box-shadow:inset 0 0 0 1px var(--rule-2),inset .3rem 0 0 var(--accent)}
html.is-stage .kit-line{font-size:1.3rem;max-width:none}
html.is-stage .btn-note{font-size:1.05rem}
html.is-stage .aside{font-size:.9em}
html.is-stage .save-step{gap:1rem;padding:.7rem 1.2rem;border-radius:.7rem;font-size:1.4rem}
html.is-stage .save-step .sn{width:2.4rem;height:2.4rem;font-size:1.2rem}
/* Lab 3, what you should see: the summary first, then the drafts and the file to save */
html.is-stage #lab3-see .ta-b{display:none}
html.is-stage #lab3-see[data-vstep="5"] .ta-a,html.is-stage #lab3-see[data-vstep="6"] .ta-a{display:none}
html.is-stage #lab3-see[data-vstep="5"] .beat-title .ta-b,html.is-stage #lab3-see[data-vstep="6"] .beat-title .ta-b{display:inline}
html.is-stage #lab3-see[data-vstep="5"],html.is-stage #lab3-see[data-vstep="6"]{--vis-h:25rem}
html.is-stage #lab3-see[data-vstep="5"] .save-step,html.is-stage #lab3-see[data-vstep="6"] .save-step{display:flex}
/* Lab 3, your turn: a wider mock so the eight file chips read in full */
html.is-stage #lab3-go .go-grid{grid-template-columns:minmax(0,1fr) 38rem}

/* stage: what just happened */
html.is-stage .why-grid{grid-template-columns:minmax(0,1fr) 42rem;gap:2rem 3.5rem}
html.is-stage .why-txt{gap:1.4rem}
html.is-stage .beat-why .lede{font-size:1.4rem;line-height:1.45}

/* stage: when it goes wrong */
html.is-stage .trouble{gap:1rem 1.2rem}
html.is-stage .trouble li{gap:1.1rem;padding:1.2rem 1.4rem;border-radius:.8rem}
html.is-stage .tr-ic{width:2.6rem;height:2.6rem;padding:.4rem;border-radius:.55rem}
html.is-stage .trouble h3{font-size:1.4rem;margin-bottom:.3rem}
html.is-stage .trouble p{font-size:1.25rem;line-height:1.42}

/* stage: Lab 4, one group of steps at a time, the matching file lit on the right */
html.is-stage .fix-grid{grid-template-columns:minmax(0,1fr) 40rem;gap:1.5rem 3rem}
html.is-stage .fix-group{gap:.8rem}
html.is-stage .fix-group h3{font-size:1.9rem;gap:.3rem .8rem}
html.is-stage .fg-why{font-size:1.15rem}
html.is-stage .rule-quote{padding-left:1.1rem;border-left-width:.2rem}
html.is-stage .rule-quote p{font-size:1.5rem;line-height:1.36}

/* stage: recap card */
html.is-stage .beat-recap .beat-in{align-items:center;gap:1rem}
html.is-stage .pcard{width:64rem;max-width:none;gap:1rem;padding:2.2rem 2.8rem 1.8rem;border-radius:1rem}
html.is-stage .pcard-k{font-size:1rem}
html.is-stage .pcard-h{font-size:3.2rem;line-height:1.05}
html.is-stage .pcard-list li{gap:1.2rem;padding:.7rem 0}
html.is-stage .pcard-list .pb{font-size:1.4rem}
html.is-stage .pcard-list p{font-size:1.4rem;line-height:1.38}
html.is-stage .pcard-foot{font-size:1rem;padding-top:.9rem}
html.is-stage .shot-hint{font-size:1rem}

/* stage: what happens next */
html.is-stage .beat-next .beat-in{gap:1rem}
html.is-stage .next-grid{grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:1rem 3.5rem}
html.is-stage .next-list li{grid-template-columns:2.4rem minmax(0,1fr);gap:1rem;padding:.5rem 0}
html.is-stage .next-list p{font-size:1.3rem;line-height:1.36}
html.is-stage .later{gap:.7rem}
html.is-stage .later-h{font-size:1.4rem}
html.is-stage .ladder{gap:.45rem}
html.is-stage .ladder li{gap:.8rem;padding:.5rem 1rem;border-radius:.55rem;font-size:1.2rem}
html.is-stage .ladder li:nth-child(2){margin-left:1.6rem}
html.is-stage .ladder li:nth-child(3){margin-left:3.2rem}
html.is-stage .ladder li:nth-child(4){margin-left:4.8rem}
html.is-stage .lock{width:1.3rem;height:1.3rem}
html.is-stage .ld-k{font-size:1rem}
html.is-stage .who{font-size:1.2rem}

/* stage: close */
html.is-stage .beat-close .beat-in{gap:1.8rem}
html.is-stage .beat-close .beat-title{font-size:5rem}
html.is-stage .beat-close .sub{font-size:2rem}
html.is-stage .close-foot{font-size:1rem;padding-top:1.4rem;margin-top:2rem}

/* stage chrome: a beat rail at the top, the part and minutes used at the bottom */
html.is-stage .stage-ui{display:block}
.rail{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;gap:.2rem;padding:calc(env(safe-area-inset-top, 0px) + 1.25rem) 2.5rem 0;pointer-events:none}
.rail i{position:relative;flex:var(--g,1) 1 0;height:.32rem;border-radius:.1rem;overflow:hidden;background:color-mix(in srgb,var(--lvc) 30%,transparent)}
.rail i.done{background:var(--lvc)}
.rail i b{position:absolute;inset:0;transform:scaleX(var(--sp,0));transform-origin:0 50%;background:var(--lvc);transition:transform .4s var(--ease)}
.rail i.cur{box-shadow:0 0 0 .12rem color-mix(in srgb,var(--lvc) 45%,transparent)}
.rail i[data-l="0"]{--lvc:var(--lv1)}
.rail i[data-l="1"]{--lvc:var(--lv1)}
.rail i[data-l="2"]{--lvc:var(--lv2)}
.rail i[data-l="3"]{--lvc:var(--lv3)}
.stage-foot{position:fixed;left:0;right:0;bottom:0;z-index:50;display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:0 max(2.5rem, env(safe-area-inset-right, 0px)) calc(env(safe-area-inset-bottom, 0px) + 1.1rem) max(2.5rem, env(safe-area-inset-left, 0px));font:500 1rem/1 var(--f-mono);letter-spacing:.08em;color:var(--ink-3);pointer-events:none}
.sf-left{display:inline-flex;align-items:center;gap:1.1rem}
.sf-level{display:inline-flex;align-items:center;gap:.7rem;text-transform:uppercase;color:var(--ink-2)}
.sf-level::before{content:"";width:.7rem;height:.7rem;border-radius:.1rem;background:var(--lvc,var(--lv1));transform:rotate(45deg)}
.sf-level[data-l="2"]{--lvc:var(--lv2)}
.sf-level[data-l="3"]{--lvc:var(--lv3)}
.sf-mins{padding-left:1.1rem;border-left:1px solid var(--rule-2);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.sf-right{display:inline-flex;align-items:center;gap:1rem}
.sf-dots{display:inline-flex;gap:.35rem}
.sf-dots i{width:.45rem;height:.45rem;border-radius:50%;background:currentColor;opacity:.3}
.sf-dots i.on{opacity:1;background:var(--accent)}
.sf-count{font:600 1.3rem/1 var(--f-num);letter-spacing:.06em;font-variant-numeric:tabular-nums}
.sf-btn{pointer-events:auto;min-width:2.4rem;height:2.4rem;padding:0 .8rem;border-radius:999px;border:1px solid currentColor;background:transparent;color:inherit;font:600 1rem/1 var(--f-mono);letter-spacing:.06em;cursor:pointer}
.sf-btn:hover,.sf-btn:focus-visible{color:var(--ink)}
.sf-btn{transition:opacity .4s var(--ease)}
body.ui-idle .sf-btn:not(:focus-visible){opacity:0}
@media (pointer:coarse){.sf-btn{min-width:44px;height:44px}}

/* chapter flash between parts, stage only */
html.is-stage .levelflash.is-on{position:fixed;inset:0;z-index:60;display:grid;place-items:center;background:var(--surface-2);color:var(--ink);animation:lfade 1.5s var(--ease) both;pointer-events:none}
.lf-in{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:1.5rem 3.5rem;width:75rem;max-width:calc(100vw - 4rem)}
.lf-num{font:600 15rem/.8 var(--f-num);color:var(--accent);min-width:.6em}
.lf-txt{display:grid;gap:.8rem}
.lf-eye{font:500 1.15rem/1.3 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}
.lf-h{font:500 4.6rem/1.04 var(--f-display);letter-spacing:-.02em;text-wrap:balance}
@media (prefers-reduced-motion: no-preference){
  html.is-stage .levelflash.is-on .lf-num{animation:lfnum 1.1s var(--ease) both}
  html.is-stage .levelflash.is-on .lf-txt{animation:rise .7s .12s var(--ease) both}
}
@keyframes lfade{0%{opacity:0}14%{opacity:1}76%{opacity:1}100%{opacity:0}}
@keyframes lfnum{from{opacity:0;transform:translateY(2.5rem) scale(.96)}}

/* =====================================================================
   PRESENTER CONSOLE (?presenter)
   ===================================================================== */
html.is-presenter .topbar,html.is-presenter .deck,html.is-presenter .foot,html.is-presenter .stage-ui,html.is-presenter .skip,html.is-presenter .levelflash{display:none!important}
html.is-presenter body{background:var(--bg)}
.console{max-width:1320px;margin:0 auto;padding:16px var(--gutter-r) calc(28px + env(safe-area-inset-bottom, 0px)) var(--gutter-l);display:grid;gap:16px}
.pc-top{display:grid;grid-template-columns:repeat(6,minmax(0,1fr)) auto;gap:10px;align-items:stretch}
.pc-clock{display:grid;gap:6px;align-content:start;padding:10px 12px;border-radius:8px;background:var(--surface);box-shadow:inset 0 0 0 1px var(--rule)}
.pc-clock span{font:500 10.5px/1.25 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
.pc-clock b{font:600 2rem/1 var(--f-num);font-variant-numeric:tabular-nums;color:var(--ink)}
.pc-clock small{font:500 11px/1.2 var(--f-mono);color:var(--ink-3)}
.pc-delta[data-tone="ok"]{background:var(--good-wash)}
.pc-delta[data-tone="ok"] b{color:var(--good-ink)}
.pc-delta[data-tone="warn"]{background:var(--warn-wash)}
.pc-delta[data-tone="warn"] b{color:var(--warn-ink)}
.pc-delta[data-tone="late"]{background:var(--risk-wash)}
.pc-delta[data-tone="late"] b{color:var(--risk)}
.pc-clockbtns{display:grid;gap:6px}
.pc-btn{min-height:44px;padding:0 16px;border-radius:8px;border:1px solid var(--rule-2);background:var(--surface);color:var(--ink);font:700 .92rem/1 var(--f-body);cursor:pointer}
.pc-btn:hover{border-color:var(--accent)}
.pc-btn.primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.pc-main{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:16px;align-items:start}
.pc-now{display:grid;gap:14px;padding:20px 22px;border-radius:10px;background:var(--surface);box-shadow:inset 0 0 0 1px var(--rule)}
.pc-level{font:500 11.5px/1.3 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
.pc-title{font:500 2rem/1.12 var(--f-display)}
.pc-stop{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font:500 13px/1 var(--f-mono);color:var(--ink-2)}
.pc-stop i{width:9px;height:9px;border-radius:50%;background:var(--rule-2)}
.pc-stop i.on{background:var(--accent)}
.pc-notes{font-size:1.2rem;line-height:1.55;color:var(--ink);padding:14px 18px;background:var(--accent-wash);border-radius:8px;white-space:pre-line}
.pc-next{font-size:1rem;color:var(--ink-2)}
.pc-next b{color:var(--ink)}
.pc-nav{display:grid;grid-template-columns:1fr 2fr;gap:10px}
.pc-nav .pc-btn{min-height:76px;font-size:1.3rem;border-radius:10px}
.pc-tools{display:grid;gap:14px}
.pc-box{display:grid;gap:12px;padding:16px 18px;border-radius:10px;background:var(--surface);box-shadow:inset 0 0 0 1px var(--rule)}
.pc-box h2{font:600 11.5px/1.3 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
.pc-lab[data-state="over"]{background:var(--warn-wash);box-shadow:inset 0 0 0 2px var(--warn)}
.pc-labrow{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px}
.pc-labt{font:600 2.6rem/1 var(--f-num);font-variant-numeric:tabular-nums;color:var(--ink)}
.pc-lab[data-state="over"] .pc-labt{color:var(--warn-ink)}
.pc-labk{font:500 12px/1.3 var(--f-mono);color:var(--ink-3)}
.pc-labbtns{display:inline-flex;gap:6px;margin-left:auto}
.pc-labs{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px}
.pc-labs li{display:grid;gap:2px;padding:6px 8px;border-radius:6px;background:var(--surface-2);font:500 11px/1.2 var(--f-mono);color:var(--ink-3)}
.pc-labs .pl-t{font:600 1.05rem/1 var(--f-num);font-variant-numeric:tabular-nums;color:var(--ink)}
.pc-labs li[data-state="run"]{background:var(--accent-wash)}
.pc-labs li[data-state="over"]{background:var(--warn-wash)}
.pc-labs li[data-state="over"] .pl-t{color:var(--warn-ink)}
.pc-notebox{width:100%;min-height:110px;padding:10px 12px;border-radius:8px;border:1px solid var(--rule-2);background:var(--bg);color:var(--ink);font:400 1rem/1.5 var(--f-body);resize:vertical}
.pc-cut[data-hot]{box-shadow:inset 0 0 0 2px var(--warn-ink);background:var(--warn-wash)}
.pc-cut[data-hot] h2{color:var(--warn-ink)}
.pc-cutlist{display:grid;gap:4px;padding-left:1.2em;list-style:decimal;font-size:.95rem;line-height:1.4}
.pc-never{font-size:.9rem;font-weight:700;color:var(--ink)}
.pc-jump{display:flex;flex-direction:column;max-height:360px;overflow:auto}
.pc-jump button{flex:none;display:grid;grid-template-columns:30px minmax(0,1fr) 46px 56px;gap:8px;align-items:center;width:100%;min-height:40px;padding:4px 8px;border:0;border-bottom:1px solid var(--rule);background:transparent;color:var(--ink-2);text-align:left;cursor:pointer;font-size:.9rem}
.pc-jump button[aria-current="true"]{background:var(--accent-wash);color:var(--ink);font-weight:700}
.pc-jump .jn{font:600 1rem/1 var(--f-num);color:var(--accent)}
.pc-jump .jm,.pc-jump .jt{font:500 11px/1 var(--f-mono);color:var(--ink-3);text-align:right}
.pc-hint{font-size:.82rem;color:var(--ink-3)}
@media (max-width:980px){.pc-top{grid-template-columns:repeat(3,minmax(0,1fr))}.pc-clockbtns{grid-column:1/-1;grid-template-columns:1fr 1fr}.pc-main{grid-template-columns:1fr}.pc-labs{grid-template-columns:repeat(3,minmax(0,1fr))}}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;transition-delay:0s!important}
  html.is-stage .levelflash.is-on{display:none}
}

/* ---------- forced colours ---------- */
@media (forced-colors: active){
  .labtimer,.prompt-row,.badges li,.three-words li,.trouble li,.ladder li,.pcard{border:1px solid CanvasText}
}

/* ---------- print: a flat handout ---------- */
@media print{
  html.is-stage,html.is-stage body{overflow:visible;height:auto}
  html.is-stage{font-size:16px}
  .topbar,.stage-ui,.levelflash,.keymap,.console,.replay,.skip,.swipe-hint,.copy-btn,.lt-btns,.lt-ring,.lt-t,.shot-hint{display:none!important}
  html.is-stage .deck{position:static!important;overflow:visible!important}
  .beat,.levelband,html.is-stage .beat{position:static!important;display:block!important;opacity:1!important;visibility:visible!important;transform:none!important;padding:24px 0!important}
  html.is-stage .levelband{display:block!important}
  [data-sb-phase]{display:grid!important}
  [data-sb-at]{opacity:1!important;visibility:visible!important;transform:none!important}
  .beat-in > *{animation:none!important}
  html.is-stage #lab3-see .ta-a{display:revert!important}
  html.is-stage #lab3-see .save-step{display:flex!important}
  .steps li,.trouble li,.fix-group,.pcard,.vis-wrap,.next-list li,.prompt{break-inside:avoid}
  .vis-scroll{overflow:visible}
  html.is-stage .visual{height:auto!important}
  .prompt-row,.pcard,.pb,.labtimer{-webkit-print-color-adjust:exact;print-color-adjust:exact}
}