:root {
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --bg: #f5f3ee; --card: #ffffff; --ink: #1c2230; --muted: #6b7280; --line: #e7e3da; --soft: #f3f1ec;
  --accent: #2455d6; --accent-ink: #fff;
  --market: #2f7de1; --product: #0ea5a4; --finance: #d97706; --data: #64748b;
  --ai: #7c3aed; --ai-ink: #ffffff; --ai-soft: #f3edff; --co: #0f9f6e; --co-soft: #e9f7f1; --you: #2455d6; --err: #c92a2a;
  --r: 20px; --shadow: 0 1px 2px rgba(0,0,0,.04), 0 10px 30px rgba(28,34,48,.06);
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #14161b; --card: #1d2027; --ink: #eef0f4; --muted: #9aa3b2; --line: #2c313c; --soft: #252933;
    --accent: #7ea2ff; --accent-ink: #0d1020; --ai: #a78bfa; --ai-ink: #1a1030; --ai-soft: #2a2140; --co: #34d399; --co-soft: #17302a; --you: #7ea2ff;
    --shadow: none; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 640px; margin: 0 auto; padding: 8px 16px 80px; }
main.wide { max-width: 1180px; }
h1 { font-family: var(--serif); font-weight: 600; font-size: 2rem; line-height: 1.15; margin: 4px 0 8px; letter-spacing: -.01em; }
h2 { font-family: var(--serif); font-weight: 600; font-size: 1.45rem; line-height: 1.2; margin: 0; letter-spacing: 0; }
p { margin: 0 0 10px; }
[hidden] { display: none !important; }
.muted { color: var(--muted); } .small { font-size: .88rem; } .strong { font-weight: 650; }
.center { text-align: center; } .lead { font-size: 1.08rem; }
.error { color: var(--err); } .boot { max-width: 520px; margin: 40px auto; padding: 0 16px; }
.sr { position: absolute; left: -9999px; }
code { font-size: .8rem; background: var(--soft); padding: 2px 6px; border-radius: 6px; word-break: break-all; }

/* top bar */
.top { display: flex; align-items: center; gap: 10px; padding: 12px 16px; max-width: 1180px; margin: 0 auto; }
.top strong { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.top-case { font-weight: 400; color: var(--muted); }
.icon { font: inherit; border: 0; background: var(--card); color: var(--ink); min-width: 38px; height: 38px; border-radius: 12px; cursor: pointer; box-shadow: var(--shadow); }
.icon.lang { font-size: .8rem; font-weight: 700; }

/* controls */
.btn { font: inherit; font-weight: 600; border: 1.5px solid var(--line); background: var(--card); color: var(--ink); padding: 10px 18px; border-radius: 14px; cursor: pointer; text-decoration: none; transition: transform .08s; }
.btn:active { transform: scale(.98); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.big { width: 100%; padding: 14px 18px; font-size: 1.05rem; margin-top: 18px; }
.btn.small { padding: 6px 12px; font-size: .88rem; }
.btn:disabled { opacity: .35; cursor: default; }
.link { font: inherit; background: none; border: 0; color: var(--accent); cursor: pointer; padding: 6px 2px; text-decoration: none; }
.link.danger { color: var(--err); }
.pill { font: inherit; font-size: .9rem; border: 1.5px solid var(--line); background: var(--card); color: var(--ink); padding: 4px 14px; border-radius: 999px; cursor: pointer; }
.pill.on { background: var(--ink); color: var(--card); border-color: var(--ink); }
input, textarea { font: inherit; color: var(--ink); background: var(--card); border: 1.5px solid var(--line); border-radius: 12px; padding: 10px 12px; width: 100%; }
textarea { resize: vertical; }
input:focus, textarea:focus { outline: none; border-color: var(--accent); }
input.big { font-size: 1.1rem; padding: 14px; text-align: center; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.row .btn.big { flex: 1; min-width: 180px; }
.spread { justify-content: space-between; }
.inline { display: flex; gap: 8px; } .inline input { flex: 1; }

/* join / login */
.hero { text-align: center; max-width: 380px; margin: 8vh auto 0; }
.hero .error { margin-top: 10px; }

/* case picker */
.cases { display: grid; gap: 14px; margin-top: 16px; }
.case { font: inherit; color: inherit; text-align: left; border: 0; border-radius: var(--r); padding: 20px; cursor: pointer; background: var(--card); box-shadow: var(--shadow);
  display: grid; gap: 8px; border-left: 6px solid var(--c); transition: transform .12s; }
.case:hover { transform: translateY(-2px); }
.case.type-rules { --c: #94a3b8; } .case.type-ml { --c: var(--market); } .case.type-genai { --c: var(--ai); }
.case-type { font-size: .82rem; font-weight: 700; color: var(--muted); }
.case-title { font-size: 1.25rem; font-weight: 700; line-height: 1.2; }
.case-meter { height: 5px; background: var(--soft); border-radius: 99px; overflow: hidden; }
.case-meter span { display: block; height: 100%; background: var(--c); }
.case-go { font-weight: 650; color: var(--accent); }

/* card */
.card { background: var(--card); border-radius: var(--r); padding: 22px; box-shadow: var(--shadow); }
.intro { margin-top: 8px; } .intro p { font-size: 1.05rem; }
.card.flip { animation: flip .45s ease-out; }
@keyframes flip { from { transform: perspective(900px) rotateY(-12deg) scale(.98); opacity: .3; } to { transform: none; opacity: 1; } }
.card-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; margin-bottom: 18px; }
.card-title h2 { margin-top: 2px; }
.card-title { display: flex; gap: 12px; align-items: flex-start; }
.card-title p { margin: 2px 0 0; }
.tools { display: flex; gap: 4px; flex: none; }
.toast { font-size: .88rem; color: var(--muted); margin: 8px 0 0; min-height: 0; }
.toast:empty { display: none; }

/* layout: board left, card right */
.play { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 20px; align-items: start; }
.play aside { position: sticky; top: 12px; }

/* lean canvas board */
.board { display: grid; gap: 1.5px; grid-template-columns: repeat(10, minmax(0, 1fr)); grid-auto-rows: minmax(84px, auto);
  border: 1.5px solid var(--bline); border-radius: 14px; overflow: hidden; background: var(--bline);
  grid-template-areas:
    "problem problem solution solution uvp uvp advantage advantage segments segments"
    "problem problem metrics metrics uvp uvp channels channels segments segments"
    "costs costs costs costs costs revenue revenue revenue revenue revenue"
    "data data data data data data data data data data"; }
:root { --bline: #cfc9bd; }
@media (prefers-color-scheme: dark) { :root { --bline: #464d5b; } }
.a-problem { grid-area: problem; } .a-solution { grid-area: solution; } .a-metrics { grid-area: metrics; } .a-uvp { grid-area: uvp; }
.a-advantage { grid-area: advantage; } .a-channels { grid-area: channels; } .a-segments { grid-area: segments; }
.a-costs { grid-area: costs; } .a-revenue { grid-area: revenue; } .a-data { grid-area: data; }
.bcell { font: inherit; color: var(--ink); text-align: left; display: flex; flex-direction: column; gap: 4px; padding: 10px 11px; min-width: 0;
  border: 0; background: var(--card); cursor: pointer; position: relative; transition: background .2s; }
.bcell:disabled { cursor: default; }
.bcell:not(:disabled):not(.heat):hover { background: var(--soft); }
.bcell.now { background: color-mix(in srgb, var(--accent) 10%, var(--card)); box-shadow: inset 0 0 0 2px var(--accent); z-index: 1; }
.b-head { display: flex; gap: 6px; align-items: baseline; font-size: .78rem; font-weight: 650; color: var(--muted); line-height: 1.2; }
.b-num { font-size: .68rem; opacity: .7; font-variant-numeric: tabular-nums; }
.bcell.now .b-head { color: var(--accent); }
.b-title { min-width: 0; overflow-wrap: break-word; }
.b-text { font-size: .84rem; line-height: 1.3; hyphens: auto; overflow-wrap: anywhere; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.b-badges { position: absolute; right: 8px; bottom: 8px; display: flex; gap: 4px; }
.mk { display: inline-block; width: 9px; height: 9px; border-radius: 50%; box-shadow: 0 0 0 1.5px var(--card); }
.mk-hit { background: var(--co); } .mk-ai { background: var(--ai); } .mk-lect { width: 10px; height: 10px; border-radius: 3px; border: 2px solid var(--ai); background: transparent; box-shadow: none; }
.bcell.heat { background: color-mix(in srgb, var(--ai) calc(var(--heat) * 45%), var(--card)); }
.bcell.heat.now { background: color-mix(in srgb, var(--ai) calc(var(--heat) * 38%), color-mix(in srgb, var(--accent) 10%, var(--card))); }
.bcell.heat { padding-bottom: 24px; }
.b-heat { position: absolute; left: 11px; bottom: 7px; font-size: .7rem; font-weight: 700; color: var(--ai); font-variant-numeric: tabular-nums; }
.heat-legend { display: flex; gap: 6px; align-items: center; font-size: .8rem; color: var(--muted); margin: 8px 2px 0; }
.mk-heat { width: 16px; height: 10px; border-radius: 3px; background: linear-gradient(90deg, var(--card), var(--ai)); border: 1px solid var(--bline); }
.tip { position: relative; cursor: help; outline: none; }
.tip-i { display: inline-grid; place-items: center; width: 15px; height: 15px; margin-left: 5px; border-radius: 50%; border: 1.5px solid var(--muted); font-size: .65rem; font-weight: 700; font-style: normal; vertical-align: 1px; }
.tip-box { display: none; position: absolute; bottom: calc(100% + 8px); right: -8px; width: min(280px, 70vw); padding: 10px 12px; border-radius: 12px;
  background: var(--ink); color: var(--card); font-size: .85rem; line-height: 1.4; z-index: 10; box-shadow: 0 8px 24px rgba(0,0,0,.2); }
.tip:hover .tip-box, .tip:focus .tip-box, .tip:focus-within .tip-box { display: block; }
.company .tip { font-weight: 600; color: var(--muted); text-transform: none; letter-spacing: 0; }
.company .tip-box { bottom: auto; top: calc(100% + 6px); right: auto; left: 0; text-transform: none; letter-spacing: 0; font-weight: 400; }
.company .tip-box::before { content: ""; position: absolute; left: 0; right: 0; top: -8px; height: 8px; }
.tip-box p { margin: 0 0 8px; font-style: italic; }
.tip-box a { color: inherit; font-weight: 700; }
.legend { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; font-size: .82rem; color: var(--muted); margin: 10px 0 0; }
.legend span { display: inline-flex; gap: 6px; align-items: center; }

/* guessing */
.opts { display: grid; gap: 8px; }
.opt { font: inherit; text-align: left; color: var(--ink); background: transparent; border: 1.5px solid var(--line); border-radius: 14px; padding: 12px 14px; cursor: pointer; transition: border-color .1s, background .1s; }
.opt:hover { border-color: var(--bline); }
.opt.on { border-color: var(--accent); background: var(--card); font-weight: 600; }
.own-link { justify-self: start; font-size: .92rem; }
.own input { border-color: var(--accent); }
.step2 { margin-top: 14px; animation: rise .25s ease-out; }
@keyframes rise { from { opacity: 0; transform: translateY(6px); } }
.why { border: 0; border-bottom: 1.5px solid var(--line); border-radius: 0; padding: 8px 2px; background: transparent; }
.ai-ask { margin-top: 18px; padding: 16px; border-radius: 16px; border: 1.5px solid color-mix(in srgb, var(--ai) 35%, transparent); text-align: center; }
.ai-q { font-weight: 650; margin-bottom: 12px; color: var(--ink); }
.ai-btns { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.ai-btns button { font: inherit; font-weight: 650; padding: 14px 10px; border-radius: 14px; cursor: pointer; transition: transform .08s; }
.ai-btns button:active { transform: scale(.97); }
.ai-yes { background: var(--ai); color: var(--ai-ink); border: 2px solid var(--ai); }
.ai-no { background: var(--card); color: var(--ink); border: 2px solid var(--line); }
.ai-ask .muted { margin: 10px 0 0; }

/* reveal */
.reveal { display: grid; gap: 12px; }
.sec { border-radius: 16px; padding: 16px 18px; background: var(--soft); }
.sec-co { background: transparent; border: 1px solid var(--line); position: relative; padding: 18px 20px 20px; }
.co-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 8px; }
.co-who { font-size: .85rem; font-weight: 600; color: var(--co); display: inline-flex; align-items: center; gap: 8px; }
.co-who::before { content: ""; width: 18px; height: 2px; background: var(--co); border-radius: 2px; }
.company .company-text { font-family: var(--serif); font-size: 1.4rem; font-weight: 600; line-height: 1.3; margin: 0 0 8px; }
.company .company-why { font-size: .95rem; line-height: 1.5; }
.draft-dot { position: absolute; top: 10px; right: 10px; width: 7px; height: 7px; border-radius: 50%; background: #d97706; opacity: .8; }
.company .co-meta .tip { font-size: .8rem; }
.sec-ai { background: var(--ai-soft); }
.sec-head { font-size: .85rem; font-weight: 600; color: var(--muted); margin-bottom: 12px; }
.sec-ai .sec-head { color: var(--ai); }
.sec-sub { font-weight: 400; color: var(--muted); }
.sec .bar-track { background: color-mix(in srgb, var(--ink) 8%, transparent); }
.ai-cols { display: flex; justify-content: space-around; gap: 12px; }
.ai-col { display: grid; justify-items: center; gap: 6px; font-size: .85rem; color: var(--muted); min-width: 70px; }
.tok { width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; font-size: .8rem; font-weight: 700; }
.tok.yes { background: var(--ai); color: var(--ai-ink); }
.tok.no { border: 2px solid color-mix(in srgb, var(--ai) 45%, transparent); color: var(--muted); }
.tok.none { border: 2px dashed var(--line); color: var(--muted); }
.donut { --p: 0; width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center;
  background: conic-gradient(var(--ai) calc(var(--p) * 1%), color-mix(in srgb, var(--ai) 18%, transparent) 0); }
.donut span { width: 42px; height: 42px; letter-spacing: -.02em; border-radius: 50%; display: grid; place-items: center; background: var(--ai-soft); color: var(--ink); font-size: .74rem; font-weight: 700; }
.float-tip { position: fixed; z-index: 40; width: min(300px, calc(100vw - 16px)); padding: 12px 14px; border-radius: 14px; background: var(--ink); color: var(--card);
  font-size: .85rem; line-height: 1.4; box-shadow: 0 10px 30px rgba(0,0,0,.35); pointer-events: none; opacity: 1; }
.ft-title { font-weight: 700; margin-bottom: 6px; }
.ft-row { display: grid; grid-template-columns: 104px 1fr; gap: 8px; margin: 3px 0; }
.ft-row span { opacity: .65; }
.ft-row b.co { color: color-mix(in srgb, var(--co) 70%, var(--card)); }
.ft-why { margin: 8px 0 0; padding-top: 8px; border-top: 1px solid color-mix(in srgb, var(--card) 25%, transparent); opacity: .85; font-style: italic; }
.eyebrow { display: block; font-size: .75rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); }
.tools { display: flex; gap: 14px; margin-top: 10px; }
.link.quiet { color: var(--muted); font-size: .88rem; padding: 4px 0; }
.link.quiet:hover { color: var(--accent); }
.company-why { color: var(--muted); margin: 0; font-size: .95rem; }
.bars { display: grid; gap: 10px; }
.bar { display: grid; gap: 5px; font-size: .93rem; }
.bar-top { display: flex; gap: 10px; align-items: baseline; }
.bar-label { flex: 1; }
.bar-pct { font-variant-numeric: tabular-nums; font-weight: 650; color: var(--muted); }
.bar-track { height: 6px; border-radius: 99px; background: var(--soft); overflow: hidden; }
.bar-fill { height: 100%; width: var(--w); border-radius: 99px; background: color-mix(in srgb, var(--muted) 55%, transparent); transform-origin: left; animation: grow .6s ease-out both; animation-delay: var(--d); }
.bar.comp .bar-fill { background: var(--co); }
.bar.comp .bar-label { font-weight: 650; }
.bar.comp .bar-pct { color: var(--co); }
.me { color: var(--accent); font-weight: 650; white-space: nowrap; }
@keyframes grow { from { transform: scaleX(0); } }
.card-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 16px; flex-wrap: wrap; }
.card-foot .btn { padding: 12px 26px; }
.foot-links { display: flex; gap: 16px; font-size: .9rem; }
.tag { font-size: .7rem; font-weight: 700; padding: 1px 8px; border-radius: 999px; }

/* pop-up */
.modal { position: fixed; inset: 0; background: rgba(10, 14, 20, .45); display: grid; place-items: center; padding: 16px; z-index: 30; animation: fade .15s; }
@keyframes fade { from { opacity: 0; } }
.sheet { background: var(--card); border-radius: 18px; padding: 18px 20px 20px; width: min(520px, 100%); max-height: 86vh; overflow: auto; animation: rise .2s ease-out; }
.sheet-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.x { border: 0; background: var(--soft); width: 32px; height: 32px; border-radius: 10px; font-size: 1.2rem; cursor: pointer; color: var(--ink); }
.quote { padding-left: 12px; border-left: 3px solid var(--line); }
.voice { margin: 8px 0; padding-left: 10px; border-left: 3px solid var(--line); font-size: .95rem; }
.note { background: var(--soft); border-radius: 14px; padding: 14px 16px; margin-top: 14px; }
.note p:last-child { margin: 0; }

/* media */
.media { margin: 12px 0 0; }
.media iframe, .media video { width: 100%; aspect-ratio: 16 / 9; border: 0; border-radius: 12px; background: #000; }
.media img { width: 100%; border-radius: 12px; display: block; }
.media figcaption { font-size: .85rem; color: var(--muted); margin-top: 4px; }

/* end */
.end-head { text-align: center; margin: 4px 0 14px; }
.end-head h1 { margin-bottom: 2px; }
.seg-wrap { display: flex; justify-content: center; margin-bottom: 14px; }
.seg { display: inline-flex; gap: 2px; padding: 4px; border-radius: 14px; background: var(--soft); border: 1px solid var(--line); max-width: 100%; overflow-x: auto; }
.seg button { font: inherit; font-size: .9rem; border: 0; background: transparent; color: var(--muted); padding: 8px 16px; border-radius: 10px; cursor: pointer; white-space: nowrap; }
.seg button.on { background: var(--card); color: var(--ink); font-weight: 600; box-shadow: var(--shadow), 0 0 0 1px var(--line); }
.end-board .board { grid-auto-rows: minmax(96px, auto); }
.end-board .b-text { -webkit-line-clamp: 4; }
.b-check { color: var(--co); font-weight: 700; }
.b-tag { position: absolute; right: 8px; bottom: 7px; font-size: .68rem; font-weight: 700; color: var(--ai); border: 1px solid color-mix(in srgb, var(--ai) 45%, transparent); border-radius: 999px; padding: 1px 7px; background: var(--card); }
.end-board .bcell.heat { padding-bottom: 28px; background: color-mix(in srgb, var(--ai) calc(var(--heat) * 32%), var(--card)); }
.end-board .b-heat { display: none; }
.end-legend { font-size: .82rem; color: var(--muted); margin: 8px 2px 0; }
.end-note { margin-top: 22px; padding: 18px 20px; border-radius: 16px; border: 1px solid var(--line); background: var(--card); }
.end-note h3 { font-family: var(--serif); font-weight: 600; font-size: 1.1rem; margin: 0 0 6px; }
.end-note p { margin: 0; line-height: 1.55; }
.sources { margin-top: 10px; font-size: .85rem; color: var(--muted); }
.sources summary { cursor: pointer; }
.sources p { margin: 6px 0 0; }
.end-actions { margin-top: 20px; justify-content: flex-end; }
.confetti { position: fixed; inset: 0; pointer-events: none; z-index: 50; }

/* quick exercises */
.acts { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 14px 0 6px; }
.act-tile { font: inherit; color: inherit; text-align: left; display: grid; gap: 6px; align-content: start; padding: 16px 18px; border-radius: var(--r);
  border: 1px solid var(--line); background: var(--card); box-shadow: var(--shadow); cursor: pointer; transition: transform .12s; }
.act-tile:hover { transform: translateY(-2px); }
.act-title { font-family: var(--serif); font-weight: 600; font-size: 1.08rem; line-height: 1.25; }
.cases-head { margin-top: 26px; }
.act-card { max-width: 980px; margin: 8px auto 0; }
.act-wide { max-width: 1180px; margin: 0 auto; }
.live { margin-top: 10px; }
.live::first-letter { color: var(--co); }
/* sorting */
.sort-pool { border: 1.5px dashed var(--bline); border-radius: 16px; padding: 14px; margin-bottom: 12px; transition: border-color .15s, background .15s; }
.sort-pool-head { display: flex; justify-content: space-between; gap: 10px; font-size: .9rem; font-weight: 600; color: var(--muted); margin-bottom: 10px; }
.sort-cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.sort-col { border-radius: 16px; padding: 14px; min-height: 160px; background: var(--soft); border: 1.5px solid transparent; transition: border-color .15s, background .15s; cursor: pointer; display: flex; flex-direction: column; gap: 10px; }
.sort-col.done { cursor: default; background: var(--soft); }
.sort-col.armed, .sort-pool.armed { border-color: color-mix(in srgb, var(--accent) 45%, transparent); }
.sort-col.over, .sort-pool.over { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, var(--soft)); }
.sort-col-head { display: grid; gap: 2px; }
.sort-col-head strong { font-family: var(--serif); font-weight: 600; font-size: 1.1rem; }
.sort-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.sort-chip { font: inherit; font-size: .95rem; color: var(--ink); background: var(--card); border: 1.5px solid var(--line); border-radius: 12px; padding: 9px 14px; cursor: grab; box-shadow: var(--shadow); transition: transform .08s, border-color .1s; }
.sort-chip:active { cursor: grabbing; }
.sort-chip.sel { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, var(--card)); transform: translateY(-2px); }
.sort-chip.dragging { opacity: .4; }
.sort-empty { color: var(--muted); font-size: .85rem; margin: auto 0; text-align: center; opacity: .8; }
.sort-score { font-family: var(--serif); font-size: 1.25rem; font-weight: 600; margin: 0 0 12px; }
.chip-res { font: inherit; text-align: left; display: grid; gap: 2px; color: var(--ink); background: var(--card); border: 1.5px solid var(--line); border-radius: 12px; padding: 8px 12px; cursor: pointer; }
.chip-res.ok { border-color: color-mix(in srgb, var(--co) 55%, transparent); }
.chip-res.ok .chip-label { color: var(--co); font-weight: 600; }
.chip-res.miss { border-style: dashed; border-color: var(--warn, #d97706); }
.chip-sub { font-size: .75rem; color: var(--muted); }
.chip-sub.miss-text { color: #d97706; font-weight: 600; }
.sort-note { margin-top: 6px; color: var(--muted); }
/* poll */
.sv-board .board { grid-auto-rows: minmax(104px, auto); }
.sv-board .bcell.heat { background: color-mix(in srgb, var(--ai) calc(var(--heat) * 72%), var(--card)); }
.sv-board .b-heat { display: none; }
.sv-board .b-text { font-family: var(--serif); font-weight: 600; font-size: 1.25rem; margin-top: 2px; }
.sv-board .bcell { gap: 4px; }
.sv-input .bcell:not(.done) .b-text { color: var(--muted); font-weight: 400; font-style: italic; }
.sv-input .bcell { user-select: none; }
.sv-meta { font-size: .75rem; color: color-mix(in srgb, var(--ink) 72%, transparent); }
.sv-board .bcell.heat .b-num, .sv-board .bcell.heat .b-title { color: color-mix(in srgb, var(--ink) 80%, transparent); }
.sv-swatch.l0 { background: color-mix(in srgb, var(--ai) 22%, var(--card)); }
.sv-swatch.l1 { background: color-mix(in srgb, var(--ai) 58%, var(--card)); }
.sv-swatch.l2 { background: var(--ai); }
.sv-scale { display: flex; gap: 16px; justify-content: center; font-size: .85rem; color: var(--muted); margin: 10px 0 0; }
.sv-scale span { display: inline-flex; align-items: center; gap: 6px; }
.sv-swatch { display: inline-block; width: 18px; height: 12px; border-radius: 3px; border: 1px solid var(--bline); }
.sv-top { margin-top: 18px; padding: 16px 20px; border-radius: 16px; border: 1px solid var(--line); background: var(--card); }
.sv-top h3 { font-family: var(--serif); font-weight: 600; font-size: 1.1rem; margin: 0 0 8px; }
.sv-top ol { margin: 0; padding-left: 22px; display: grid; gap: 4px; }
.t-sub { font-size: .8rem; font-weight: 700; color: var(--muted); margin: 14px 0 2px; text-transform: uppercase; letter-spacing: .04em; }

/* own cases */
.cases-sub { font-family: var(--serif); font-weight: 600; font-size: 1.15rem; margin: 28px 0 0; text-align: center; }
.case.type-own { --c: var(--co); }
.case.create { --c: transparent; border: 1.5px dashed var(--bline); box-shadow: none; background: transparent; text-align: center; justify-items: center; }
.case.create .case-title { color: var(--accent); font-size: 1.1rem; }
.own-meta { font: inherit; color: var(--ink); width: 100%; text-align: left; display: flex; justify-content: space-between; align-items: baseline; gap: 10px;
  background: var(--card); border: 1.5px solid var(--line); border-radius: 12px; padding: 10px 12px; margin-bottom: 8px; cursor: pointer; }
.own-meta.now { border-color: var(--accent); }
.own-meta .muted { white-space: nowrap; flex: none; }
.own-name { font-weight: 650; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pick-hint { margin: 8px 2px 0; }
.fld { display: grid; gap: 6px; margin: 0 0 14px; font-size: .9rem; font-weight: 600; color: var(--muted); }
.fld input, .fld textarea { font-weight: 400; color: var(--ink); }
.type-pills { display: flex; flex-wrap: wrap; gap: 6px; }
.own-text { font-size: 1rem; line-height: 1.5; min-height: 120px; }
.lens { margin-top: 14px; }
.lens p { margin: 0 0 12px; }
.own-ai { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: .9rem; padding-top: 10px; border-top: 1px solid color-mix(in srgb, var(--ai) 20%, transparent); }
.own-ai span { margin-right: 4px; }
.own-sum h1 { margin-top: 6px; }
.board-full { margin: 18px 0 8px; }
.board-full .board { grid-auto-rows: minmax(110px, auto); }
.board-full .b-text { -webkit-line-clamp: unset; display: block; white-space: pre-wrap; }
.board-full .bcell:not(.done) .b-text { color: var(--muted); font-style: italic; }
.danger-btn { color: var(--err); }

/* print (own case overview) */
@media print {
  :root { --bg: #fff; --card: #fff; --ink: #111; --muted: #555; --line: #ccc; --bline: #999; --soft: #fff; }
  body { background: #fff; }
  .top, .no-print, .confetti, .float-tip { display: none !important; }
  main, main.wide { max-width: none; padding: 0; }
  .board { break-inside: avoid; }
  .bcell { background: #fff !important; }
}

/* teacher */
.present-nav { margin-top: 14px; }
.dots { display: flex; gap: 4px; justify-content: space-between; margin-bottom: 12px; }
.dot { flex: 1; font: inherit; font-size: .78rem; color: var(--muted); border: 0; border-radius: 10px; padding: 6px 0; background: transparent; cursor: pointer; }
.dot.now { background: var(--card); box-shadow: var(--shadow); }
.t-row { display: flex; align-items: center; gap: 8px; padding: 10px 0; border-top: 1px solid var(--line); flex-wrap: wrap; }
.t-row > span:first-child { flex: 1; min-width: 180px; }
.card + .card, form.card { margin-top: 14px; }
main > .card { margin-top: 14px; }

/* tablet / phone: board becomes a compact strip on top */
@media (max-width: 900px) {
  .play { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .play > * { min-width: 0; }
  .play aside { position: static; }
  .play .board { grid-template-areas: none; grid-template-columns: repeat(5, minmax(0, 1fr)); grid-auto-rows: auto; }
  .play .bcell { grid-area: auto; padding: 7px 6px; min-height: 0; }
  .play .b-text { display: none; }
  .play .b-head { font-size: .7rem; }
  .play .b-num { display: none; }
  .play .b-title { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .play .bcell.done:not(.heat) { background: var(--soft); }
  .play .b-badges { top: 4px; right: 4px; }
  .play .mk { width: 6px; height: 6px; }
  .play .b-heat { display: none; }
  .play .b-badges { top: 4px; bottom: auto; }
}
@media (max-width: 640px) {
  .acts { grid-template-columns: 1fr; }
  .sort-cols { grid-template-columns: 1fr; }
  .sort-col { min-height: 96px; }
  .sv-board .board { grid-template-areas: none; grid-template-columns: 1fr 1fr; }
  .sv-board .bcell { grid-area: auto; }
  .board-full .board { grid-template-areas: none; grid-template-columns: 1fr; }
  .board-full .bcell { grid-area: auto; }
  .tip-box { position: fixed; left: 16px; right: 16px; bottom: 16px; width: auto; }
  .end .board { grid-template-areas: none; grid-template-columns: 1fr 1fr; }
  .end .bcell { grid-area: auto; }
  .end-actions .btn { flex: 1; }
  .seg-wrap { justify-content: stretch; } .seg { width: 100%; overflow: visible; } .seg button { flex: 1 1 0; min-width: 0; padding: 8px 4px; font-size: .8rem; white-space: normal; line-height: 1.2; }
  .card { padding: 16px; }
    .card-head { gap: 6px; }
    h2 { font-size: 1.15rem; }
  h1 { font-size: 1.6rem; }
  .ai-btns { grid-template-columns: 1fr; }
  .card-foot .btn { flex: 1; }
  .legend { justify-content: flex-start; }
}
@media (prefers-reduced-motion: reduce) { .card.flip, .bar-fill, .step2, .sheet, .modal { animation: none; } }