/* Fieldbook, Ink theme. Spacing on a 4px scale. Motion: 100/160/240 ms, one curve. */
:root{
  --bg:#0b1015;--bg2:#0b1015;--panel:#151a20;--panel2:#1e232a;--line:#282e36;
  --text:#eaeff6;--sec:#b7bec9;--muted:#9ea5af;
  --accent:#e9b452;--accent-ink:#0b1015;--accent2:#b7bec9;
  --good:#8dbf9b;--bad:#d9918b;--warn:#e9b452;
  --good-bg:#1f3026;--mid-bg:#3a3222;--bad-bg:#3b2726;
  --r:8px;--r-s:4px;--side:256px;
  --t1:100ms;--t2:160ms;--t3:240ms;--ease:cubic-bezier(.2,0,0,1);
  --sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --teal:#5cc2c8;--teal-bg:#12303a;--rose:#e8909d;--rose-bg:#3a2029;--slate:#222a33;
  --glass:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,0) 60%),#151b22;--hair:inset 0 1px 0 rgba(255,255,255,.06);
  --glow:0 0 0 1px rgba(233,180,82,.35),0 8px 28px -8px rgba(233,180,82,.35);--shadow:0 12px 32px -16px rgba(0,0,0,.7);
  --spring:cubic-bezier(.34,1.56,.64,1);
  color-scheme:dark;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:radial-gradient(1200px 520px at 78% -8%,rgba(233,180,82,.07),transparent 60%),var(--bg);background-attachment:fixed;color:var(--text);font:400 16px/24px var(--sans);min-height:100vh;font-variant-numeric:tabular-nums}
body.in-session{overflow:hidden}
body{font-feature-settings:'tnum'}
h1,h2,h3,h4{line-height:1.25;margin:0 0 8px;font-weight:500}
h1{font-size:clamp(24px,3vw,28px)}h2{font-size:20px}h3{font-size:16px}h4{font-size:14px;color:var(--sec);margin-top:16px}
strong,b{font-weight:600}
p{margin:4px 0 12px}a{color:var(--accent);text-underline-offset:3px}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:var(--r-s)}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:var(--panel);padding:8px 12px;z-index:99}
.muted{color:var(--muted)}.eyebrow{color:var(--muted);font:400 13px/20px var(--mono);margin-bottom:4px}
.plain{list-style:none;padding:0;margin:0}.small{font-size:13px}.mono{font-family:var(--mono)}
[hidden]{display:none!important}

/* shell */
.side{position:fixed;inset:0 auto 0 0;width:var(--side);background:linear-gradient(180deg,#121820,#0e1319);border-right:1px solid var(--line);padding:20px 12px;display:flex;flex-direction:column;gap:20px;z-index:5}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);text-decoration:none;padding:0 8px;min-height:40px}
.logo-mark{display:block;flex:none}.wordmark{font:600 14px/20px var(--mono);letter-spacing:.18em}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-list a{position:relative;display:flex;align-items:center;gap:12px;min-height:44px;padding:0 12px;border-radius:var(--r);border:1px solid transparent;color:var(--sec);text-decoration:none;font-size:14px;font-weight:500;transition:color var(--t1) var(--ease),background-color var(--t2) var(--ease),border-color var(--t2) var(--ease)}
.nav-list a:hover{color:var(--text);background:rgba(255,255,255,.03)}
.nav-list a.on{background:linear-gradient(90deg,rgba(233,180,82,.14),rgba(233,180,82,.03));border-color:rgba(233,180,82,.28);color:var(--text)}
.nav-list a.on::before{content:"";position:absolute;left:-13px;top:10px;bottom:10px;width:3px;border-radius:0 3px 3px 0;background:var(--accent);box-shadow:0 0 12px var(--accent)}
.nav-list a.on .ico{color:var(--accent)}
.side-more{margin-top:auto;border-top:1px solid var(--line);padding-top:12px}.side-more a{min-height:40px;font-weight:400}
.ic{display:inline-grid;place-items:center;flex:none;line-height:0}.ico{display:block}
.datum{margin-left:var(--side);max-width:1184px;padding:16px clamp(16px,4vw,32px) 0;font:400 12px/16px var(--mono);color:var(--muted)}
main{margin-left:var(--side);padding:16px clamp(16px,4vw,32px) 64px;max-width:1184px;outline:none}
.tabbar,.topbar{display:none}
.page-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:8px 24px;margin-bottom:24px}
.page-head h1{margin:0}.page-head p{margin:0}

/* panels */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:24px;margin-bottom:16px}
.glass{background:var(--glass);box-shadow:var(--hair),var(--shadow)}
.panel.accent{border-color:rgba(233,180,82,.35)}
.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:16px;margin-bottom:16px}.cols>.panel{margin-bottom:0}
.stack>*+*{margin-top:12px}
.row{display:flex;gap:8px;align-items:center}.row.wrap{flex-wrap:wrap}.row.between{justify-content:space-between;flex-wrap:wrap}.row.end{justify-content:flex-end}
.note{background:var(--panel2);border:1px solid var(--line);border-left:2px solid var(--warn);border-radius:var(--r-s);padding:12px 16px;color:var(--text)}
.hero{display:flex;flex-wrap:wrap;gap:24px 32px;align-items:center;justify-content:space-between}
.level-name{font-size:clamp(28px,4vw,36px);line-height:40px;font-weight:500;color:var(--text)}
.level-path{display:grid;grid-template-columns:repeat(auto-fit,minmax(144px,1fr));gap:0 16px;list-style:none;padding:0;margin:0 0 16px}
.level-path li{display:flex;align-items:center;gap:8px;padding:8px 0;border-top:1px solid var(--line);color:var(--muted);font-size:14px;min-height:36px}
.level-path li .dot{background:transparent;border:1px solid var(--muted)}
.level-path li.done{color:var(--sec)}.level-path li.done .dot{background:var(--muted)}
.level-path li.current{color:var(--text);border-top-color:var(--accent)}.level-path li.current .dot{background:var(--accent);border-color:var(--accent)}
.stats{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:16px;margin:16px 0}
.stats.tight{grid-template-columns:repeat(auto-fit,minmax(120px,1fr))}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:16px}
.panel .stat{background:var(--panel2)}
.stat-v{font:500 24px/32px var(--mono);overflow-wrap:anywhere}.stat-l{color:var(--sec);font-size:13px;line-height:20px;margin-top:4px}
.stat .muted{font:400 12px/16px var(--mono);margin-top:4px}

/* the 52-card ladder */
.stages{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:4px;margin:0 0 12px}
.stage{display:flex;flex-direction:column;gap:4px;padding:12px 8px 8px;background:var(--panel2);border:1px solid var(--line);border-top:4px solid var(--line);border-radius:var(--r-s);min-height:64px}
.stage strong{font:500 16px/20px var(--mono);color:var(--sec)}.stage .muted{font:400 12px/16px var(--mono)}
.stage.ok{border-top-color:var(--accent)}.stage.ok strong{color:var(--text)}
.stage.next{border-color:var(--accent);border-top-color:var(--accent)}.stage.next strong{color:var(--accent)}
.mastered{margin:12px 0;padding:12px 16px;border-radius:var(--r);border:1px solid var(--line);border-left:2px solid var(--accent);background:var(--panel2);color:var(--text);font-weight:500}
.meter{height:8px;border-radius:var(--r-s);background:var(--panel2);border:1px solid var(--line);overflow:hidden;position:relative}
.panel .meter{background:var(--bg)}
.meter.slim{height:4px;min-width:120px}.meter-fill{height:100%;background:var(--accent)}
.meter-big{font-size:20px}

/* controls */
.btn{appearance:none;border:1px solid var(--line);background:var(--panel2);color:var(--text);font:inherit;font-size:14px;font-weight:500;padding:0 16px;border-radius:var(--r-s);cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;transition:color var(--t1) var(--ease),background-color var(--t1) var(--ease),border-color var(--t1) var(--ease)}
.btn:hover{border-color:var(--muted)}
.btn{will-change:transform}.btn .ic{margin-left:-2px}
.btn.primary{background:linear-gradient(180deg,#f2c367,#e9b452);color:var(--accent-ink);border-color:#f2c367;box-shadow:var(--hair),0 6px 20px -8px rgba(233,180,82,.6)}
.btn.primary:hover{background:linear-gradient(180deg,#f7cd7b,#eebb5c);border-color:#f7cd7b}
.btn.ghost{background:transparent}.btn.danger{background:transparent;border-color:var(--bad);color:var(--bad)}
.btn.sm{padding:0 12px;min-height:32px;font-size:13px}.btn.lg{padding:0 24px;font-size:16px;min-height:48px}.btn.xl{padding:0 32px;font-size:16px;min-height:56px}
.btn[disabled]{opacity:.4;cursor:not-allowed}
.chip-btn,.chip,.tab{appearance:none;font:inherit;font-size:14px;border:1px solid var(--line);background:transparent;color:var(--sec);padding:0 12px;min-height:32px;display:inline-flex;align-items:center;border-radius:var(--r-s);cursor:pointer;transition:color var(--t1) var(--ease),border-color var(--t1) var(--ease)}
.chip{cursor:default;font-family:var(--mono);font-size:13px}
.chip-btn:hover,.tab:hover{color:var(--text);border-color:var(--muted)}
.chip-btn.on,.tab.on{background:var(--panel2);border-color:var(--accent);color:var(--text)}
.chip.ok{border-color:var(--good);color:var(--good)}.chip.bad{border-color:var(--bad);color:var(--bad)}
.chips,.tabs,.presets,.filter{display:flex;flex-wrap:wrap;gap:8px}.tabs{margin-bottom:16px}
.choices{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}.choices.tight{gap:4px}
.choice{appearance:none;font:inherit;font-weight:500;background:var(--panel2);color:var(--text);border:1px solid var(--line);border-radius:var(--r-s);padding:8px 16px;cursor:pointer;min-width:44px;min-height:44px;transition:border-color var(--t1) var(--ease)}
.choice:hover{border-color:var(--muted)}.choice.picked,.choice.on{background:var(--panel2);border-color:var(--accent)}
.choice.sm{padding:4px 8px;min-width:40px}.choice.suit.red{color:var(--bad)}
.choice.cardbtn{padding:4px;background:transparent}
.toggle{display:flex;align-items:center;gap:8px;cursor:pointer}.toggle input{width:20px;height:20px;accent-color:var(--accent)}
.field{display:flex;flex-direction:column;gap:4px;margin-bottom:12px}
.field.toggle{flex-direction:row;align-items:center;gap:8px}
.field>label,.field .lbl{font-size:13px;color:var(--sec);display:flex;justify-content:space-between;gap:8px}
.fields{display:grid;grid-template-columns:repeat(auto-fill,minmax(232px,1fr));gap:4px 24px}
input[type=text],input[type=number],input[type=search],select,textarea{font:inherit;font-size:14px;color:var(--text);background:var(--bg);border:1px solid var(--line);border-radius:var(--r-s);padding:8px 12px;width:100%;min-height:40px;transition:border-color var(--t1) var(--ease)}
input:focus,select:focus,textarea:focus{border-color:var(--accent);outline:2px solid var(--accent);outline-offset:0}
input[type=range]{width:100%;accent-color:var(--accent)}
.text-in{font:500 24px/32px var(--mono);text-align:center;max-width:520px}.text-in.sm{font:400 16px/24px var(--sans);text-align:left}
.config{background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:16px;margin:12px 0 16px}.config h4{margin:0 0 8px}.presets{margin-bottom:16px}
.est{color:var(--muted);font:400 13px/20px var(--mono)}
.hint,.hintchip{color:var(--warn);font-size:14px}

/* training */
.test-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;margin-bottom:16px}
.test-card{text-align:left;appearance:none;font:inherit;font-size:14px;color:var(--text);background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:16px;cursor:pointer;display:flex;flex-direction:column;gap:4px;min-height:120px;transition:border-color var(--t2) var(--ease)}
.test-card:hover{border-color:var(--muted)}
.test-card.on{border-color:var(--accent);background:var(--panel2)}
.test-letter{font:500 13px/20px var(--mono);color:var(--muted)}.test-card.on .test-letter{color:var(--accent)}
.tablewrap{overflow-x:auto}.table{width:100%;border-collapse:collapse;font-size:14px}
.table th,.table td{text-align:left;padding:8px 12px;border-bottom:1px solid var(--line);white-space:nowrap}.table th{color:var(--muted);font-weight:500;font-size:13px}
.table td:not(:first-child){font-variant-numeric:tabular-nums}

/* lessons */
.learn-grid{display:grid;grid-template-columns:304px 1fr;gap:24px;align-items:start}
.lesson-list{display:flex;flex-direction:column;gap:4px;position:sticky;top:16px}
.lesson-item{appearance:none;font:inherit;font-size:14px;color:var(--text);text-align:left;display:flex;gap:12px;align-items:flex-start;background:transparent;border:1px solid transparent;border-radius:var(--r-s);padding:8px 12px;cursor:pointer;transition:background-color var(--t1) var(--ease)}
.lesson-item:hover{background:var(--panel)}
.lesson-item small{display:block;font-size:12px;line-height:16px}.lesson-item.on{background:var(--panel2);border-color:var(--line)}
.lesson-item.done .lesson-n{color:var(--accent);border-color:var(--accent)}
.lesson-n{flex:none;display:grid;place-items:center;width:24px;height:24px;border-radius:var(--r-s);border:1px solid var(--line);font:400 12px/16px var(--mono);color:var(--muted)}
.lesson{max-width:760px}.lesson ul,.lesson ol{padding-left:24px}.lesson li{margin:4px 0}.lesson h4{margin-top:24px}
.heat-cards{display:flex;flex-direction:column;gap:4px}.heat-row{display:flex;gap:4px;flex-wrap:wrap}.heat-suit{width:24px;text-align:center}
.heat-cell{width:32px;height:32px;border-radius:var(--r-s);display:grid;place-items:center;font:400 12px/16px var(--mono);border:1px solid var(--line)}
.h-none{background:var(--panel2);color:var(--muted)}.h-good{background:var(--good-bg)}.h-mid{background:var(--mid-bg)}.h-bad{background:var(--bad-bg)}
.ladder{display:flex;flex-direction:column;margin:16px 0 0;padding:0;list-style:none;border-top:1px solid var(--line)}
.ladder-row{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:12px 0 12px 16px;border-bottom:1px solid var(--line);border-left:4px solid var(--line)}
.ladder-row strong{font:500 16px/24px var(--mono)}.ladder-row .muted{font-size:13px;line-height:20px}
.ladder-row.ok{border-left-color:var(--accent)}.ladder-row.next{border-left-color:var(--text);background:var(--panel2)}
.locedit,.locrow{display:flex;gap:8px;align-items:center;margin:8px 0}.locn{min-width:128px;font-weight:500}.locs{display:flex;flex-direction:column;gap:4px}
.locedit{background:var(--panel2);border:1px solid var(--line);border-radius:var(--r-s);padding:8px 12px;flex-wrap:wrap}
.routemap{width:100%;height:auto;background:var(--bg);border:1px solid var(--line);border-radius:var(--r)}
.rm-line{stroke:var(--muted);stroke-width:1.5;fill:none}.rm-node{fill:var(--panel2);stroke:var(--accent);stroke-width:1.5}.rm-n{fill:var(--text);font:400 11px var(--mono);text-anchor:middle;dominant-baseline:central}.rm-t{fill:var(--muted);font:400 11px var(--mono);text-anchor:middle}
.mapt{width:100%}

/* charts */
.chart{position:relative}.chart svg{width:100%;height:auto;display:block}
.chart .gl{stroke:var(--line);stroke-width:1}.chart .ax{fill:var(--muted);font:400 11px var(--mono)}
.chart-empty{padding:32px 16px;text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:var(--r)}
.chart-tip{position:absolute;pointer-events:none;background:var(--bg);border:1px solid var(--line);color:var(--text);font:400 12px/16px var(--mono);padding:4px 8px;border-radius:var(--r-s);white-space:nowrap;transform:translate(-50%,-130%);z-index:3;opacity:0;transition:opacity var(--t1) var(--ease)}.chart-tip.on{opacity:1}
.heat{fill:var(--panel2)}.heat.l1{fill:#3a3424}.heat.l2{fill:#6b5a2e}.heat.l3{fill:#a98a3f}.heat.l4{fill:var(--accent)}.heat.l-1{fill:transparent;stroke:var(--line)}
.calendar{max-width:100%;height:auto}.weak{padding:12px 0;border-bottom:1px solid var(--line)}.weak:last-child{border:0}

/* session overlay */
.session{position:fixed;inset:0;z-index:50;background:var(--bg);display:flex;flex-direction:column;overflow:auto}
.s-head{display:flex;align-items:center;gap:16px;padding:12px clamp(16px,3vw,32px);border-bottom:1px solid var(--line);flex-wrap:wrap}
.s-title{font-weight:500}.s-round{color:var(--muted);margin-left:auto;font:400 13px/20px var(--mono)}.s-stage{flex:1;display:grid;place-items:center;padding:24px clamp(16px,3vw,32px);position:relative}
.s-stage>*{max-width:900px;width:100%}.s-foot{padding:16px clamp(16px,3vw,32px);display:flex;gap:8px;justify-content:center;border-top:1px solid var(--line);flex-wrap:wrap}
.session.is-paused .s-stage>*:not(.pause-card){visibility:hidden}
.pause{position:absolute;inset:0;display:grid;place-items:center;background:var(--bg);z-index:4}.pause-card,.round-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:24px;text-align:center;margin:auto}
.round-card{text-align:left;max-width:760px}
.flash{text-align:center;display:flex;flex-direction:column;align-items:center;gap:12px;justify-content:center;min-height:256px}
.flash.pair{flex-direction:row;flex-wrap:wrap;gap:24px}.pair-link{color:var(--muted);font-size:32px}
.big-word{text-align:center;font-size:clamp(32px,7vw,56px);line-height:1.2;font-weight:500;word-break:break-word}
.big-num{font:500 clamp(40px,9vw,80px)/1.2 var(--mono);letter-spacing:.08em}
.countdown{font:500 112px/1.1 var(--mono);color:var(--accent);text-align:center}
.recall{text-align:center}.recall-timer{display:flex;align-items:center;gap:12px;margin:0 auto 16px;max-width:420px;font-family:var(--mono)}.recall-timer .meter{flex:1}
.word-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(128px,1fr));gap:8px}.word-chip,.tok{padding:8px 12px;border-radius:var(--r-s);background:var(--panel2);border:1px solid var(--line);text-align:center}
.slots{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:16px 0}
.slot{appearance:none;font:inherit;color:var(--text);min-width:48px;min-height:56px;padding:4px 8px;border-radius:var(--r-s);border:1px dashed var(--muted);background:var(--bg);display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer}
.slot.cur{border-color:var(--accent);border-style:solid}.slot.filled{border-style:solid;border-color:var(--line);background:var(--panel2)}.slot.cur.filled{border-color:var(--accent)}.slot-n{font:400 12px/16px var(--mono);color:var(--muted)}
.cardtxt{font-weight:500;font-size:16px}.cardtxt.red,.red{color:var(--bad)}
.keypad{display:grid;grid-template-columns:repeat(3,72px);gap:8px;justify-content:center;margin:16px auto}.key{appearance:none;font:500 20px/28px var(--mono);min-height:56px;border-radius:var(--r-s);border:1px solid var(--line);background:var(--panel2);color:var(--text);cursor:pointer;transition:background-color var(--t1) var(--ease)}
.key:active{background:var(--panel)}
.board{display:grid;gap:8px;margin:16px auto;max-width:min(92vw,460px)}.sq{aspect-ratio:1;border-radius:var(--r-s);background:var(--panel2);border:1px solid var(--line);appearance:none;cursor:pointer;padding:0}
.sq.lit{background:var(--accent);border-color:var(--accent)}.sq.ord{display:grid;place-items:center;font:500 16px var(--mono);color:var(--accent-ink)}.sq.ok{background:var(--good-bg);border-color:var(--good)}.sq.bad{background:var(--bad-bg);border-color:var(--bad)}.sq.miss{border-color:var(--warn)}.sq.inert{cursor:default}
.picgrid,.facegrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(112px,1fr));gap:8px;margin:12px 0}.facegrid{grid-template-columns:repeat(auto-fill,minmax(128px,1fr))}
.picbtn,.facebtn{appearance:none;font:inherit;color:var(--text);padding:8px;background:var(--panel2);border:1px solid var(--line);border-radius:var(--r-s);cursor:pointer;transition:border-color var(--t1) var(--ease)}.picbtn:hover,.facebtn:hover{border-color:var(--muted)}.picbtn.picked,.facebtn.picked{border-color:var(--accent)}
.picbtn svg,.facebtn svg,.facecard svg{width:100%;height:auto;display:block}
.cardgrid{display:grid;grid-template-columns:repeat(13,minmax(0,1fr));gap:4px;margin:12px 0}
.cardchip{appearance:none;font:500 13px/20px var(--mono);padding:8px 0;border-radius:var(--r-s);border:1px solid var(--line);background:var(--panel2);color:var(--text);cursor:pointer}.cardchip.red{color:var(--bad)}.cardchip.used{opacity:.3}
.cardrow{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0}.cellwrap{display:inline-flex;flex-direction:column;align-items:center;padding:4px;border-radius:var(--r-s);border:2px solid transparent;font-size:12px;line-height:16px;text-align:center}
.cellwrap.ok,.pairrow.ok{border-color:var(--good)}.cellwrap.bad,.pairrow.bad{border-color:var(--bad)}.cellwrap.miss{border-color:var(--warn)}
.pairs{display:flex;flex-direction:column;gap:4px}.pairrow{display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap;padding:8px 12px;border-radius:var(--r-s);border:1px solid var(--line);background:var(--panel2)}
.cardflash svg,.cardslots svg{max-width:100%}
.enc{padding:8px 16px;border-radius:var(--r-s);background:var(--panel2);color:var(--sec)}
.playing-card{display:block}.glyph-text{font-family:inherit}
.results h2{margin-top:0}.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(128px,1fr));gap:8px;margin:16px 0}
.tile{background:var(--panel2);border:1px solid var(--line);border-radius:var(--r-s);padding:12px}.tile-v{font:500 24px/32px var(--mono)}.tile-l{color:var(--sec);font-size:13px;line-height:20px}.tile-s{color:var(--muted);font:400 12px/16px var(--mono)}
.rl{margin:16px 0}
#toast{position:fixed;left:50%;bottom:88px;transform:translateX(-50%);background:var(--panel2);border:1px solid var(--line);padding:12px 16px;border-radius:var(--r-s);opacity:0;pointer-events:none;transition:opacity var(--t2) var(--ease);z-index:99;max-width:90vw}#toast.show{opacity:1}
.removable{cursor:pointer}.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}.detail summary{cursor:pointer;color:var(--accent)}.low{color:var(--warn)}.dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--accent);flex:none}.big{font-size:1.2em}.inline{display:inline}.static{position:static}

/* today */
.today-hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:24px;align-items:center;overflow:hidden;padding:32px;background:radial-gradient(520px 300px at 85% 40%,rgba(233,180,82,.10),transparent 70%),var(--glass)}
.th-title{font-size:clamp(22px,2.6vw,28px);margin-bottom:12px}.th-line{margin:0 0 16px}
.th-art{min-width:0}.hero-art{width:100%;height:auto;display:block}
.ha-ray{stroke:rgba(233,180,82,.14);stroke-width:1}.ha-row{stroke:rgba(255,255,255,.08);fill:none}.ha-col{fill:rgba(255,255,255,.05);stroke:rgba(255,255,255,.08)}
.ha-route{stroke:var(--accent);stroke-width:1.5;stroke-dasharray:3 5;fill:none;opacity:.7}.ha-node{fill:var(--accent);filter:drop-shadow(0 0 4px var(--accent))}
.plan-steps{list-style:none;margin:0 0 20px;padding:0;display:flex;flex-direction:column;gap:4px}
.plan-step{display:grid;grid-template-columns:24px 20px 1fr auto;align-items:center;gap:8px;min-height:44px;padding:0 12px;border:1px solid var(--line);border-radius:var(--r);background:rgba(255,255,255,.02);color:var(--sec);font-size:14px}
.ps-ico{color:var(--muted);display:grid}.ps-n{font:400 12px/16px var(--mono);color:var(--muted)}.ps-m{font:400 12px/16px var(--mono);color:var(--muted)}
.plan-step.done{color:var(--muted)}.plan-step.done .ps-ico{color:var(--teal)}.plan-step.done .ps-l{text-decoration:line-through;text-decoration-color:var(--muted)}
.plan-step.next{color:var(--text);border-color:rgba(233,180,82,.5);background:linear-gradient(90deg,rgba(233,180,82,.12),rgba(233,180,82,.02));box-shadow:var(--glow)}.plan-step.next .ps-ico{color:var(--accent)}
.numbers{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:24px;align-items:center;padding:20px 24px}
.num{display:flex;align-items:center;gap:12px;min-width:0}.num>.ic{color:var(--accent)}.num-v{font:500 24px/32px var(--mono)}.num-l{color:var(--muted);font-size:13px;line-height:20px}
.numbers .level-name{font-size:20px;line-height:28px}
.ring-wrap{position:relative;flex:none;display:grid;place-items:center}.ring-wrap>div{line-height:0}.ring{display:block;transform:rotate(-90deg)}
.ring-bg{fill:none;stroke:rgba(255,255,255,.08)}.ring-fg{fill:none;stroke:var(--accent);stroke-linecap:round;filter:drop-shadow(0 0 6px rgba(233,180,82,.5))}
.ring-c{position:absolute;inset:0;display:grid;place-items:center;font:500 14px var(--mono)}
.deck-panel h2{margin-bottom:4px}
/* deck map */
.deckmap{display:grid;grid-template-columns:repeat(13,minmax(0,1fr));gap:6px;margin:16px 0 12px}
.dm-tile{appearance:none;position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;aspect-ratio:5/6;padding:0;border-radius:6px;border:1px solid var(--line);background:var(--slate);color:var(--muted);font:500 13px/14px var(--mono);cursor:default;transition:transform var(--t2) var(--spring),box-shadow var(--t2) var(--ease)}
button.dm-tile{cursor:pointer}.dm-tile:hover{transform:translateY(-2px)}
.dm-s{font-size:11px;line-height:12px}.dm-tile.red .dm-s{color:var(--rose)}
.dm-tile::after{content:"";position:absolute;top:3px;right:3px;width:5px;height:5px;border-radius:50%;border:1px solid currentColor}
.dm-tile.solid{background:linear-gradient(180deg,#1b4a52,var(--teal-bg));border-color:var(--teal);color:#d6f4f6;box-shadow:0 0 14px -4px rgba(92,194,200,.55)}.dm-tile.solid::after{background:currentColor}
.dm-tile.shaky{background:linear-gradient(180deg,#4d2a35,var(--rose-bg));border-color:var(--rose);color:#fbdde2;box-shadow:0 0 12px -5px rgba(232,144,157,.5)}.dm-tile.shaky::after{border-style:dashed}
.dm-tile.unseen{opacity:.75}.dm-tile.unseen::after{display:none}
.dm-legend{display:flex;flex-wrap:wrap;gap:16px;font-size:13px;color:var(--sec)}.dm-legend li{display:flex;align-items:center;gap:8px}
.dm-key{width:12px;height:12px;border-radius:3px;border:1px solid var(--line);background:var(--slate)}.dm-key.solid{background:var(--teal);border-color:var(--teal)}.dm-key.shaky{background:var(--rose);border-color:var(--rose)}
/* empty */
.empty{display:flex;align-items:center;gap:24px;flex-wrap:wrap;padding:16px;border:1px dashed var(--line);border-radius:var(--r);background:rgba(255,255,255,.015)}
.empty-art{width:120px;flex:none;color:var(--muted)}.empty-art svg{width:100%;height:auto;display:block}.empty-body{flex:1;min-width:200px}.empty-body h3{margin-bottom:4px}
/* page */
.page-head h1{letter-spacing:-.01em}
/* train */
.train-grid>*,.today-hero>*{min-width:0}
.train-grid{display:grid;grid-template-columns:minmax(280px,360px) minmax(0,1fr);gap:24px;align-items:start}
.test-list{display:flex;flex-direction:column;gap:8px}
.test-card{flex-direction:row;align-items:center;gap:12px;min-height:72px;padding:12px 16px;background:var(--glass);box-shadow:var(--hair);transition:border-color var(--t2) var(--ease),transform var(--t2) var(--ease)}
.test-card:hover{transform:translateX(2px)}
.test-card.on{border-color:rgba(233,180,82,.6);box-shadow:var(--glow)}
.tc-ico{display:grid;place-items:center;width:40px;height:40px;border-radius:10px;background:var(--panel2);border:1px solid var(--line);color:var(--sec);flex:none}.test-card.on .tc-ico{color:var(--accent);border-color:rgba(233,180,82,.4)}
.tc-body{display:flex;flex-direction:column;min-width:0;flex:1}.tc-top{display:flex;gap:8px;align-items:baseline}.tc-blurb{font-size:13px;line-height:18px}
.tc-lv{font-size:12px;color:var(--muted);white-space:nowrap}
.test-detail{position:sticky;top:16px}
.preset-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:16px 0 8px}
.preset{appearance:none;font:inherit;color:var(--text);text-align:left;display:flex;flex-direction:column;gap:4px;min-height:72px;padding:12px;border-radius:var(--r);border:1px solid var(--line);background:var(--panel2);cursor:pointer;transition:border-color var(--t2) var(--ease),box-shadow var(--t2) var(--ease)}
.preset:hover{border-color:var(--muted)}.preset.on{border-color:var(--accent);box-shadow:var(--glow);background:linear-gradient(180deg,rgba(233,180,82,.12),var(--panel2))}
.pr-top{display:flex;align-items:center;gap:8px}.preset.on .pr-top{color:var(--accent)}.pr-sum{font:400 12px/16px var(--mono)}
.cur-cfg{margin:8px 0 16px}
.adjust{margin-top:20px;border:1px solid var(--line);border-radius:var(--r);background:rgba(0,0,0,.15)}
.adjust>summary{list-style:none;display:flex;align-items:center;gap:8px;min-height:48px;padding:0 16px;cursor:pointer;font-weight:500;font-size:14px}
.adjust>summary::-webkit-details-marker{display:none}.adjust>summary .muted{font-weight:400;font-size:13px;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.adjust>summary>.ic:last-child{transition:transform var(--t2) var(--ease)}.adjust[open]>summary>.ic:last-child{transform:rotate(180deg)}
.adjust-body{padding:0 16px 16px}.adj-block{margin-top:16px;padding-top:4px;border-top:1px solid var(--line)}.adj-block .row{margin-top:8px}
.btn.lg{min-height:48px}
/* session focus mode */
.s-stage{margin-left:0;max-width:none;padding-bottom:24px}
.results .panel.inline{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:16px 0}.results .panel.inline select{width:auto;min-width:160px}
.results .tile-v{font-size:28px}
.session{background:radial-gradient(900px 500px at 50% 30%,#111a22,var(--bg));animation:sess-in .24s var(--ease)}
@keyframes sess-in{from{opacity:0}to{opacity:1}}
.s-head{position:relative;border-bottom:0;padding-top:16px}
.s-head .meter.slim{position:absolute;left:0;right:0;top:0;height:3px;min-width:0;border:0;border-radius:0;background:rgba(255,255,255,.06)}
.s-head .meter-fill{background:linear-gradient(90deg,var(--accent),#f6d38a);box-shadow:0 0 10px var(--accent);transition:width .24s var(--ease)}
.s-foot{border-top:0}
.s-stage>*{animation:stage-in .24s var(--ease)}@keyframes stage-in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.big-word{font-size:clamp(40px,8vw,72px)}.big-num{font-size:clamp(48px,11vw,104px)}
.pause-card,.round-card{background:var(--glass);box-shadow:var(--hair),var(--shadow)}
.tile{background:var(--glass);box-shadow:var(--hair)}
.tile-v{font-size:28px;line-height:36px}
.stat{background:var(--glass);box-shadow:var(--hair)}
.chart-empty{background:rgba(255,255,255,.015)}
.more-menu .nav-list,.more-menu{flex-direction:column}
@media (hover:none){.test-card:hover,.dm-tile:hover{transform:none}}

/* tablet and mobile */
@media (max-width:980px){:root{--side:0px}.side{display:none}.datum,main{margin-left:0}main{padding-bottom:104px}
  .topbar{display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:7;padding:8px 16px;background:rgba(11,16,21,.86);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
  .topbar .brand{padding:0}
  .menu-btn{appearance:none;display:grid;place-items:center;width:48px;height:48px;border-radius:var(--r);border:1px solid var(--line);background:var(--panel2);color:var(--text);cursor:pointer}
  .more-menu{position:absolute;right:12px;top:calc(100% + 4px);min-width:200px;background:var(--panel2);border:1px solid var(--line);border-radius:var(--r);padding:8px;box-shadow:var(--shadow)}
  .more-menu a{min-height:48px}
  .tabbar{display:flex;flex-direction:row;position:fixed;left:0;right:0;bottom:0;z-index:6;background:rgba(14,19,25,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-top:1px solid var(--line);padding:4px 8px calc(4px + env(safe-area-inset-bottom));gap:4px}
  .tabbar a{flex:1;flex-direction:column;justify-content:center;gap:2px;min-height:52px;padding:4px 0;font-size:11px;line-height:14px;border-radius:var(--r);min-width:48px}
  .tabbar a.on{background:transparent;border-color:transparent;color:var(--accent)}.tabbar a.on::before{left:25%;right:25%;top:-5px;bottom:auto;width:auto;height:3px;border-radius:0 0 3px 3px}
  .learn-grid{grid-template-columns:1fr}.lesson-list{position:static;flex-direction:row;overflow-x:auto;padding-bottom:8px}.lesson-item{min-width:208px}.lesson-item small{display:none}
  .today-hero{grid-template-columns:minmax(0,1fr)}.th-art{order:-1;max-width:420px;margin:0 auto}.train-grid{grid-template-columns:minmax(0,1fr)}.test-detail{position:static}.test-list{flex-direction:row;overflow-x:auto;padding-bottom:8px;scroll-snap-type:x proximity}.test-card{min-width:224px;scroll-snap-align:start}}
@media (max-width:600px){body{font-size:15px}.panel{padding:16px}.cardgrid{grid-template-columns:repeat(7,1fr)}.countdown{font-size:80px}.cols{grid-template-columns:1fr}.two{grid-template-columns:1fr}.btn.xl{width:100%}.locn{min-width:88px}.stages{grid-template-columns:repeat(4,minmax(0,1fr))}
  .test-card{min-width:176px;flex-direction:column;align-items:flex-start;gap:8px;min-height:0}.tc-blurb{display:none}.tc-lv{white-space:normal}
  .numbers{grid-template-columns:1fr 1fr}.numbers .lvl{grid-column:1/-1}.preset-row{grid-template-columns:1fr}.deckmap{grid-template-columns:repeat(7,minmax(0,1fr))}.today-hero{padding:16px}.th-title{font-size:20px}}
@media (min-width:601px) and (max-width:980px){.deckmap{grid-template-columns:repeat(13,minmax(0,1fr))}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}}