:root{
  color-scheme:light;
  --bg:#F1F4EE; --surface:#FFFFFF; --surface-2:#E7ECE3; --ink:#15201C; --ink-2:#4B5B54; --line:#D2DBD1;
  --teal:#0F6B63; --teal-soft:#D5ECE6; --gold:#A8720A; --gold-strong:#E9A91F; --gold-soft:#FCEFC8; --hl:#FFE27A;
  --coach:#4F46C8; --coach-soft:#E6E5FA;
  --good:#1F7F55; --good-soft:#D9F0E3; --bad:#B8333F; --bad-soft:#F8DEE0; --on-teal:#FFFFFF;
  --shadow:0 1px 2px rgba(21,32,28,.06),0 8px 24px rgba(21,32,28,.08);
  --display:"Bricolage Grotesque",ui-sans-serif,system-ui,sans-serif;
  --body:"Atkinson Hyperlegible",ui-sans-serif,system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,Consolas,monospace;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  color-scheme:dark;--bg:#0D1412;--surface:#15201C;--surface-2:#1D2A26;--ink:#E5EEE9;--ink-2:#9CB0A7;--line:#2A3934;
  --teal:#48C3B2;--teal-soft:#16362F;--gold:#F1BB45;--gold-strong:#F1BB45;--gold-soft:#372C10;--hl:#5E5012;
  --coach:#A5A0FF;--coach-soft:#25244A;
  --good:#5BCB92;--good-soft:#15352A;--bad:#F07C86;--bad-soft:#3C1C20;--on-teal:#0D1412;--shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.3);}}
:root[data-theme="dark"]{
  color-scheme:dark;--bg:#0D1412;--surface:#15201C;--surface-2:#1D2A26;--ink:#E5EEE9;--ink-2:#9CB0A7;--line:#2A3934;
  --teal:#48C3B2;--teal-soft:#16362F;--gold:#F1BB45;--gold-strong:#F1BB45;--gold-soft:#372C10;--hl:#5E5012;
  --coach:#A5A0FF;--coach-soft:#25244A;
  --good:#5BCB92;--good-soft:#15352A;--bad:#F07C86;--bad-soft:#3C1C20;--on-teal:#0D1412;--shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.3);}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.55}
img{max-width:100%}
[hidden]{display:none!important}
a{color:var(--teal)}
h1,h2,h3,h4{font-family:var(--display);line-height:1.1;margin:0;text-wrap:balance;letter-spacing:-.01em}
h1{font-size:clamp(1.9rem,4.2vw,3rem);font-weight:800}
h2{font-size:1.55rem;font-weight:700}
h3{font-size:1.12rem;font-weight:700}
p{margin:0}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--gold-strong);outline-offset:2px;border-radius:6px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.eyebrow{font-family:var(--mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2)}
.muted{color:var(--ink-2)}
.small{font-size:.88rem}
.bad-text{color:var(--bad)}
.mark{background:linear-gradient(transparent 55%,var(--hl) 55%,var(--hl) 92%,transparent 92%);padding:0 .1em}

/* shell */
.shell{display:grid;grid-template-columns:248px minmax(0,1fr);min-height:100vh}
.rail{position:sticky;top:0;height:100vh;overflow-y:auto;padding:22px 14px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:18px;background:var(--bg)}
.brand{display:flex;align-items:baseline;gap:8px;text-decoration:none;color:var(--ink);padding:0 8px}
.brand b{font-family:var(--display);font-weight:800;font-size:1.7rem;letter-spacing:-.03em}
.brand b i{font-style:normal;background:linear-gradient(transparent 58%,var(--hl) 58%)}
.brand span{font-family:var(--mono);font-size:.68rem;color:var(--ink-2);letter-spacing:.1em;text-transform:uppercase}
.nav{display:flex;flex-direction:column;gap:1px}
.navgroup{font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);padding:12px 12px 4px}
.nav a{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:8px 12px;border-radius:10px;text-decoration:none;color:var(--ink-2);font-weight:700;font-size:.94rem}
.nav a:hover{background:var(--surface-2);color:var(--ink)}
.nav a[aria-current="page"]{background:var(--ink);color:var(--bg)}
.nav a .coach-dot{width:7px;height:7px;border-radius:50%;background:var(--coach)}
.rail-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px}
.acct{display:flex;align-items:center;gap:10px;padding:10px;border:1px solid var(--line);border-radius:12px;background:var(--surface);text-decoration:none;color:inherit}
.avatar{width:34px;height:34px;border-radius:50%;background:var(--ink);color:var(--bg);display:grid;place-items:center;font-family:var(--display);font-weight:800;flex:none}
.main{min-width:0;padding-inline:clamp(16px,3.5vw,48px);padding-block:28px 96px}
.view{display:none;max-width:1140px;margin:0 auto;flex-direction:column;gap:26px}
.view.active{display:flex}
.foot{max-width:1140px;margin:56px auto 0;border-top:1px solid var(--line);padding-top:18px}
.topbar{display:none}
@media (max-width:900px){
  .shell{grid-template-columns:1fr}
  .rail{display:none}
  .topbar{display:flex;flex-direction:column;gap:10px;position:sticky;top:0;z-index:20;background:var(--bg);padding:calc(12px + env(safe-area-inset-top,0px)) 16px 10px;border-bottom:1px solid var(--line)}
  .topbar-row{display:flex;justify-content:space-between;align-items:center;gap:12px}
  .chipnav{display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;margin-inline:-16px;padding-inline:16px}
  .chipnav a{flex:none;padding:6px 12px;border-radius:999px;border:1px solid var(--line);text-decoration:none;color:var(--ink-2);font-weight:700;font-size:.88rem}
  .chipnav a[aria-current="page"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
  .main{padding-block:20px 96px}
}

/* components */
.card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px;display:flex;flex-direction:column;gap:14px;min-width:0}
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:1000px){.g4{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.g2,.g3,.g4{grid-template-columns:1fr}}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.row.nowrap{flex-wrap:nowrap}
.between{justify-content:space-between}
.stack{display:flex;flex-direction:column;gap:10px;min-width:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--line);background:var(--surface);padding:9px 16px;border-radius:10px;font-weight:700;cursor:pointer;text-decoration:none;color:var(--ink);font-size:.95rem;white-space:nowrap}
.btn:hover{border-color:var(--ink-2)}
.btn.primary{background:var(--teal);border-color:var(--teal);color:var(--on-teal)}
.btn.primary:hover{filter:brightness(1.08)}
.btn.coach{background:var(--coach);border-color:var(--coach);color:#fff}
:root[data-theme="dark"] .btn.coach{color:#15142e}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .btn.coach{color:#15142e}}
.btn.coach::before{content:"";width:12px;height:12px;flex:none;background:currentColor;clip-path:polygon(50% 0,62% 38%,100% 50%,62% 62%,50% 100%,38% 62%,0 50%,38% 38%)}
.btn.coach:hover{filter:brightness(1.1)}
.btn.ghost{background:transparent}
.btn.danger{color:var(--bad);border-color:var(--bad)}
.btn.sm{padding:6px 11px;font-size:.85rem;border-radius:8px}
.btn[disabled]{opacity:.55;cursor:not-allowed}
.field{display:flex;flex-direction:column;gap:5px;min-width:0}
.field label{font-size:.82rem;font-weight:700;color:var(--ink-2)}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=date],select,textarea{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:9px 12px;width:100%;min-width:0}
textarea{resize:vertical}
.chip{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:999px;padding:5px 12px;font-size:.85rem;font-weight:700;background:var(--surface);cursor:pointer;color:var(--ink-2)}
.chip[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:var(--bg)}
.pill{display:inline-block;font-family:var(--mono);font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;padding:3px 8px;border-radius:6px;font-weight:600}
.pill.rw{background:var(--teal-soft);color:var(--teal)}
.pill.math{background:var(--gold-soft);color:var(--gold)}
.pill.lvl{background:var(--surface-2);color:var(--ink-2)}
.pill.ok{background:var(--good-soft);color:var(--good)}
.pill.no{background:var(--bad-soft);color:var(--bad)}
.pill.gen{background:var(--coach-soft);color:var(--coach)}
.coach-tag{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--coach);font-weight:600}
.coach-tag::before{content:"";width:10px;height:10px;background:currentColor;clip-path:polygon(50% 0,62% 38%,100% 50%,62% 62%,50% 100%,38% 62%,0 50%,38% 38%)}
.coach-card{border-color:color-mix(in srgb,var(--coach) 35%,var(--line))}
.coach-out{font-size:.97rem}
.coach-out p+p,.coach-out p+ul,.coach-out ul+p{margin-top:8px}
.coach-out ul{margin:6px 0 0;padding-left:20px;display:flex;flex-direction:column;gap:4px}
.src{font-size:.8rem;color:var(--ink-2)}
.src a{color:var(--ink-2)}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
table{border-collapse:collapse;width:100%;font-size:.93rem;background:var(--surface)}
th,td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2);font-weight:600;background:var(--surface-2)}
tr:last-child td{border-bottom:none}
td.num{font-family:var(--mono);font-variant-numeric:tabular-nums;white-space:nowrap}
.formula{font-family:var(--mono);font-size:.9rem;background:var(--surface-2);padding:2px 6px;border-radius:5px}
.note{border-left:3px solid var(--gold-strong);padding:10px 14px;background:var(--gold-soft);border-radius:0 10px 10px 0;font-size:.92rem}
.switch{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:.9rem;cursor:pointer}
.switch input{width:18px;height:18px;accent-color:var(--teal)}
.check-inline{display:flex;gap:10px;align-items:flex-start;font-size:.9rem;cursor:pointer}
.check-inline input{margin-top:3px;width:18px;height:18px;accent-color:var(--teal);flex:none}
.spinner{width:14px;height:14px;border-radius:50%;border:2px solid currentColor;border-right-color:transparent;animation:spin .8s linear infinite;display:inline-block;vertical-align:-2px}
@keyframes spin{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){.spinner{animation-duration:2.4s}}

/* hero */
.hero{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:18px}
@media (max-width:900px){.hero{grid-template-columns:1fr}}
.hero-main{background:var(--ink);color:var(--bg);border-radius:20px;padding:28px;display:flex;flex-direction:column;gap:20px}
.hero-main .eyebrow{color:inherit;opacity:.7}
.hero-main h1 .mark{color:#15201C;background:#FFE27A;padding:0 .12em;border-radius:4px}
.countdown{display:flex;align-items:flex-end;gap:14px;flex-wrap:wrap}
.countdown .big{font-family:var(--display);font-weight:800;font-size:clamp(3.4rem,9vw,5.4rem);line-height:.85;letter-spacing:-.04em}
.status{display:inline-flex;gap:6px;align-items:center;font-size:.85rem;font-weight:700;padding:4px 10px;border-radius:999px}
.status.open{background:var(--good-soft);color:var(--good)}
.status.late{background:var(--gold-soft);color:var(--gold)}
.status.closed{background:var(--bad-soft);color:var(--bad)}
.scale{position:relative;height:56px;margin-top:6px}
.scale-track{position:absolute;left:0;right:0;top:22px;height:10px;border-radius:5px;background:linear-gradient(90deg,var(--surface-2),var(--teal-soft) 50%,var(--gold-soft))}
.scale-fill{position:absolute;top:22px;height:10px;border-radius:5px;background:var(--teal)}
.scale-pin{position:absolute;top:0;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;font-family:var(--mono);font-size:.72rem;font-weight:600;white-space:nowrap}
.scale-pin::after{content:"";width:2px;height:24px;background:currentColor;margin-top:2px}
.scale-pin.goal{color:var(--gold)}
.scale-ticks{position:absolute;left:0;right:0;top:40px;display:flex;justify-content:space-between;font-family:var(--mono);font-size:.68rem;color:var(--ink-2)}
.stat{display:flex;flex-direction:column;gap:2px}
.stat b{font-family:var(--display);font-size:2rem;font-weight:800;line-height:1}
.bar{height:8px;border-radius:4px;background:var(--surface-2);overflow:hidden}
.bar i{display:block;height:100%;background:var(--teal);border-radius:4px}
.bar.math i{background:var(--gold-strong)}
.domain-row{display:grid;grid-template-columns:minmax(0,1fr) 96px;gap:12px;align-items:center}
.tile{text-decoration:none;color:inherit}
.tile:hover{border-color:var(--ink-2)}

/* question */
.qcard{background:var(--surface);border:1px solid var(--line);border-radius:18px;overflow:hidden}
.qhead{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;padding:12px 20px;border-bottom:1px solid var(--line);background:var(--surface-2)}
.qbody{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
.qbody.solo{grid-template-columns:1fr}
.qpassage{padding:22px;border-right:1px solid var(--line);font-size:1.02rem;line-height:1.7}
.qpassage table{font-size:.9rem;margin-top:10px}
.qpassage ul{padding-left:20px}
.qside{padding:22px;display:flex;flex-direction:column;gap:12px}
@media (max-width:760px){.qbody{grid-template-columns:1fr}.qpassage{border-right:none;border-bottom:1px solid var(--line)}}
.stem{font-weight:700;white-space:pre-line}
.choice{display:flex;gap:12px;align-items:flex-start;text-align:left;width:100%;border:1.5px solid var(--line);background:var(--surface);border-radius:12px;padding:11px 14px;cursor:pointer}
.choice:hover{border-color:var(--ink-2)}
.choice .let{flex:none;width:26px;height:26px;border-radius:50%;border:1.5px solid var(--ink-2);display:grid;place-items:center;font-family:var(--mono);font-size:.8rem;font-weight:600}
.choice[aria-pressed="true"]{border-color:var(--teal);box-shadow:inset 0 0 0 1px var(--teal)}
.choice[aria-pressed="true"] .let{background:var(--teal);border-color:var(--teal);color:var(--on-teal)}
.choice.right{border-color:var(--good);background:var(--good-soft)}
.choice.right .let{background:var(--good);border-color:var(--good);color:var(--surface)}
.choice.wrong{border-color:var(--bad);background:var(--bad-soft)}
.choice.wrong .let{background:var(--bad);border-color:var(--bad);color:var(--surface)}
.explain{border-top:1px dashed var(--line);padding-top:12px;display:flex;flex-direction:column;gap:8px}
.verdict{font-family:var(--display);font-weight:800;font-size:1.2rem}
.verdict.ok{color:var(--good)}.verdict.no{color:var(--bad)}
.coach-box{background:var(--coach-soft);border-radius:12px;padding:12px 14px;font-size:.95rem}
.coach-box p+p,.coach-box p+ul,.coach-box ul+p{margin-top:8px}
.coach-box ul{margin:6px 0 0;padding-left:20px}

/* flashcards */
.flash{perspective:1200px;cursor:pointer;min-height:240px}
.flash-inner{position:relative;min-height:240px;transition:transform .5s;transform-style:preserve-3d}
.flash.flipped .flash-inner{transform:rotateY(180deg)}
.face{position:absolute;inset:0;backface-visibility:hidden;border-radius:18px;border:1px solid var(--line);background:var(--surface);display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:28px;gap:10px}
.face.back{transform:rotateY(180deg);background:var(--ink);color:var(--bg);border-color:var(--ink)}
.face .term{font-family:var(--display);font-size:clamp(1.4rem,3.5vw,2.1rem);font-weight:800}
@media (prefers-reduced-motion:reduce){.flash-inner{transition:none}}

/* timeline / checklist */
.tl{display:flex;flex-direction:column}
.tl-item{display:grid;grid-template-columns:110px minmax(0,1fr);gap:16px;padding:14px 0;border-top:1px solid var(--line)}
.tl-item:first-child{border-top:none}
.tl-when{font-family:var(--mono);font-size:.78rem;color:var(--ink-2);padding-top:3px}
@media (max-width:520px){.tl-item{grid-template-columns:1fr;gap:4px}}
.check{display:flex;gap:12px;align-items:flex-start;padding:10px 0;border-top:1px solid var(--line);cursor:pointer}
.check:first-of-type{border-top:none}
.check input{width:20px;height:20px;accent-color:var(--teal);margin-top:2px;flex:none}
.check.done span{text-decoration:line-through;color:var(--ink-2)}

/* chat */
.ask-fab{position:fixed;right:20px;bottom:calc(20px + env(safe-area-inset-bottom,0px));z-index:30;background:var(--coach);color:#fff;border:none;border-radius:999px;padding:12px 18px;font-weight:700;cursor:pointer;box-shadow:var(--shadow);display:flex;gap:8px;align-items:center}
:root[data-theme="dark"] .ask-fab{color:#15142e}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .ask-fab{color:#15142e}}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(440px,100%);background:var(--surface);border-left:1px solid var(--line);z-index:40;display:flex;flex-direction:column;box-shadow:var(--shadow);transform:translateX(105%);transition:transform .25s ease;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
.drawer.open{transform:none}
@media (prefers-reduced-motion:reduce){.drawer{transition:none}}
.drawer-head{padding:14px 16px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:8px}
.chat{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}
.chat.big{min-height:420px;max-height:62vh}
.msg{max-width:88%;padding:10px 14px;border-radius:14px;font-size:.96rem;overflow-wrap:anywhere}
.msg.me{align-self:flex-end;background:var(--teal);color:var(--on-teal);border-bottom-right-radius:4px;white-space:pre-wrap}
.msg.bot{align-self:flex-start;background:var(--surface-2);border-bottom-left-radius:4px}
.msg.bot p+p,.msg.bot ul,.msg.bot p+ul{margin-top:6px}
.msg ul{margin:0;padding-left:18px}
.msg.err{background:var(--bad-soft);color:var(--bad)}
.chat-form{border-top:1px solid var(--line);padding:12px 14px;display:flex;flex-direction:column;gap:8px}
.suggest{display:flex;gap:6px;flex-wrap:wrap}
.suggest button{border:1px solid var(--line);background:transparent;border-radius:999px;padding:5px 10px;font-size:.8rem;cursor:pointer;color:var(--ink-2)}
.suggest button:hover{border-color:var(--coach);color:var(--coach)}
.tutor-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:18px;align-items:start}
.tutor-main{padding:0;gap:0;overflow:hidden}
.mode{display:flex;flex-direction:column;gap:2px;text-align:left;border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:10px 12px;cursor:pointer}
.mode b{font-size:.92rem}.mode span{font-size:.8rem;color:var(--ink-2)}
.mode[aria-pressed="true"]{border-color:var(--coach);box-shadow:inset 0 0 0 1px var(--coach)}
@media (max-width:900px){.tutor-layout{grid-template-columns:1fr}}

/* studio */
.stage{background:#0B1210;border-radius:16px;overflow:hidden;position:relative}
.stage canvas{display:block;width:100%;height:auto;aspect-ratio:16/9}
.stage-controls{display:flex;gap:8px;align-items:center;flex-wrap:wrap;padding:10px 12px;background:var(--surface);border:1px solid var(--line);border-top:none;border-radius:0 0 16px 16px}
.progress{flex:1;min-width:120px;height:6px;border-radius:3px;background:var(--surface-2);position:relative;cursor:pointer}
.progress i{position:absolute;left:0;top:0;bottom:0;background:var(--coach);border-radius:3px}
.scenes{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px}
.scenes button{flex:none;border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:8px 10px;text-align:left;cursor:pointer;max-width:200px;font-size:.82rem}
.scenes button[aria-current="true"]{border-color:var(--coach);box-shadow:inset 0 0 0 1px var(--coach)}
.vid-card{cursor:pointer;text-align:left}
.vid-thumb{aspect-ratio:16/9;border-radius:10px;background:var(--ink);color:var(--bg);display:flex;align-items:flex-end;padding:12px;font-family:var(--display);font-weight:800;font-size:1.05rem;line-height:1.15;background-image:linear-gradient(transparent 62%,rgba(255,226,122,.9) 62%,rgba(255,226,122,.9) 66%,transparent 66%)}

/* games */
.game-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
@media (max-width:760px){.game-grid{grid-template-columns:1fr}}
.game-card .gicon{font-family:var(--display);font-weight:800;font-size:2.2rem;line-height:1;letter-spacing:-.03em}
.game-stage{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:22px;display:flex;flex-direction:column;gap:18px}
.game-hud{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.hud-num{font-family:var(--display);font-weight:800;font-size:1.8rem;font-variant-numeric:tabular-nums}
.prompt-big{font-family:var(--display);font-weight:700;font-size:clamp(1.3rem,3vw,1.9rem);line-height:1.3;text-align:center;padding:10px 0}
.opt-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
@media (max-width:560px){.opt-grid{grid-template-columns:1fr}}
.opt{border:1.5px solid var(--line);background:var(--surface);border-radius:12px;padding:14px;font-weight:700;cursor:pointer;font-size:1.05rem}
.opt:hover{border-color:var(--ink-2)}
.opt.right{background:var(--good-soft);border-color:var(--good);color:var(--good)}
.opt.wrong{background:var(--bad-soft);border-color:var(--bad);color:var(--bad)}
.memory{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
@media (max-width:560px){.memory{grid-template-columns:repeat(3,minmax(0,1fr))}}
.mem{aspect-ratio:4/3;border-radius:12px;border:1.5px solid var(--line);background:var(--ink);color:transparent;cursor:pointer;font-weight:700;font-size:.9rem;padding:8px;display:grid;place-items:center;text-align:center;line-height:1.25}
.mem.up{background:var(--surface);color:var(--ink)}
.mem.done{background:var(--good-soft);color:var(--good);border-color:var(--good);cursor:default}
.board{border-collapse:collapse;width:100%}
.board td{padding:7px 10px}
.board tr.you td{background:var(--gold-soft);font-weight:700}
.flashy{animation:pop .35s ease}
@keyframes pop{0%{transform:scale(1)}40%{transform:scale(1.08)}100%{transform:scale(1)}}
@media (prefers-reduced-motion:reduce){.flashy{animation:none}}

/* plan */
.week{border:1px solid var(--line);border-radius:14px;padding:16px;background:var(--surface);display:flex;flex-direction:column;gap:8px}
.week ul{margin:0;padding-left:18px;display:flex;flex-direction:column;gap:4px}

/* dialog + toasts */
dialog{border:1px solid var(--line);border-radius:18px;padding:24px;width:min(440px,calc(100% - 32px));background:var(--surface);color:var(--ink);box-shadow:var(--shadow)}
dialog::backdrop{background:rgba(10,16,14,.55)}
#toasts{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);z-index:60;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none}
.toast{background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:10px;font-weight:700;font-size:.92rem;box-shadow:var(--shadow);transition:opacity .4s}
.toast.bad{background:var(--bad);color:#fff}
.toast.out{opacity:0}
.focus-ring{display:flex;flex-direction:column;align-items:center;gap:10px}
.focus-time{font-family:var(--display);font-weight:800;font-size:3rem;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.segmented{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden;flex-wrap:wrap}
.segmented button{border:none;background:var(--surface);padding:8px 14px;font-weight:700;cursor:pointer;color:var(--ink-2);font-size:.9rem}
.segmented button[aria-pressed="true"]{background:var(--ink);color:var(--bg)}
.timer{font-family:var(--mono);font-size:1.4rem;font-weight:600;font-variant-numeric:tabular-nums}
.timer.low{color:var(--bad)}
.linkcard{text-decoration:none;color:inherit}
.linkcard:hover{border-color:var(--teal)}
.linkcard .go{font-family:var(--mono);font-size:.75rem;color:var(--teal);overflow-wrap:anywhere}
#syncState{font-size:.78rem;color:var(--ink-2)}
#syncState[data-state="error"]{color:var(--bad)}