:root{
  --bg:#0f2a22;--panel:#17382d;--panel2:#1d4537;--line:#2c5a49;--text:#e8f1ec;--muted:#a9c9b9;--gold:#ffd27a;--bad:#ff8a7a;--good:#7fe0a0;
  --t:#f5a524;--w:#f4f4f4;--a:#8fe05c;--o:#e0524a;--s:#c58be0;--p:#e8c84a;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-tap-highlight-color:transparent}
body{overflow:hidden}
#app{max-width:480px;margin:0 auto;height:100vh;height:100dvh;position:relative}
.screen{height:100%;display:flex;flex-direction:column;padding:12px 14px calc(12px + env(safe-area-inset-bottom));overflow:auto;gap:12px}
.screen[hidden],[hidden]{display:none!important}
h1{color:var(--gold);margin:4px 0 8px;font-size:28px}
h2{color:var(--gold);margin:0;font-size:20px}
h3{margin:0 0 6px;font-size:16px}
p{line-height:1.45;margin:6px 0}
a{color:var(--gold)}
.row{display:flex;align-items:center;gap:8px}.between{justify-content:space-between}.end{justify-content:flex-end}
.center{margin:auto 0;text-align:center;display:flex;flex-direction:column;align-items:center;gap:10px}
.center-text{text-align:center}
.logo{font-size:64px}
.lead{font-size:16px;color:var(--muted);max-width:380px}
.note{font-size:12px;color:var(--muted)}
.muted{color:var(--muted)}.small{font-size:12px}
.error{color:var(--bad);background:#3a1d1d;padding:8px 12px;border-radius:10px}
button{font:inherit;color:inherit;cursor:pointer}
.primary,.ghost{border-radius:12px;padding:10px 18px;font-weight:700;border:0}
.primary{background:var(--gold);color:#0f2a22}
.primary:disabled{opacity:.5}
.ghost{background:none;border:1px solid var(--line);color:var(--muted)}
.big{font-size:17px;padding:14px 20px;display:flex;align-items:center;gap:10px}
.link{background:none;border:0;color:var(--muted);padding:6px}
input{width:100%;max-width:320px;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:var(--panel);color:var(--text);font:inherit;margin:4px 0}
.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:14px}
.today .kicker{font-size:12px;color:var(--gold);text-transform:uppercase;letter-spacing:.08em}
.today h2{margin:2px 0 6px;color:var(--text)}
.today .row.head{gap:12px;align-items:flex-start}
.today canvas{flex:none;background:var(--panel2);border-radius:12px}
.today .actions{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.today .actions .primary{flex:1}
.score-line{display:flex;gap:14px;flex-wrap:wrap;margin-top:6px;font-size:14px}
.score-line b{color:var(--gold);font-size:18px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.tile{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px 8px;font-size:26px;display:flex;flex-direction:column;align-items:center;gap:6px}
.tile span{font-size:14px}
.streak{font-size:15px;background:var(--panel);border-radius:20px;padding:4px 12px;border:1px solid var(--line)}
.dots{display:flex;gap:6px}.dots i{width:8px;height:8px;border-radius:50%;background:var(--line)}.dots i.on{background:var(--gold)}
.page{flex:1}
.page .card{margin-bottom:10px}
.bug-card{display:flex;gap:12px;align-items:flex-start}
.bug-card canvas{flex:none;background:var(--panel2);border-radius:12px}
.bug-card .tag{display:inline-block;font-size:11px;font-weight:700;padding:1px 7px;border-radius:8px;color:#0f2a22;margin-left:6px;vertical-align:2px}
.bug-card ul{margin:4px 0 0;padding-left:18px;font-size:13px;line-height:1.4}
.bug-card li{margin:2px 0}
.facts{display:grid;grid-template-columns:auto 1fr;gap:3px 10px;font-size:13px;margin-top:4px}
.facts dt{color:var(--muted)}.facts dd{margin:0}
table.costs{width:100%;border-collapse:collapse;font-size:14px;margin:6px 0}
table.costs td,table.costs th{padding:6px;border-bottom:1px solid var(--line);text-align:left}
.quiz button.opt{display:block;width:100%;text-align:left;background:var(--panel);border:2px solid var(--line);border-radius:12px;padding:10px 12px;margin:6px 0}
.quiz button.opt.right{border-color:var(--good)}.quiz button.opt.wrong{border-color:var(--bad)}
.explain{font-size:13px;color:var(--muted);margin-top:6px}
/* game */
.screen.game{padding:6px 8px calc(8px + env(safe-area-inset-bottom));gap:4px;overflow:hidden}
#hud{display:flex;justify-content:space-between;align-items:center;font-size:15px;padding:2px 4px}
#hud b{color:var(--gold)}
.icon{background:var(--panel);border:1px solid var(--line);border-radius:10px;width:36px;height:32px}
#stage{text-align:center;font-size:12px;color:var(--gold);min-height:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#legend{display:flex;gap:6px;justify-content:center}
.chip{display:flex;align-items:center;gap:5px;font-size:12px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:2px 9px 2px 3px}
.chip i{width:18px;height:18px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-style:normal;font-weight:800;font-size:11px;color:#111;border:1.5px solid #111}
.chip.hot{border-color:var(--bad)}
#cw{flex:1;position:relative;min-height:0}
#c{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:manipulation}
#mode-tag{position:absolute;top:4px;left:4px;font-size:10px;background:#0009;padding:2px 6px;border-radius:6px;color:var(--muted);pointer-events:none}
#msg{text-align:center;font-size:13px;min-height:52px;max-height:52px;overflow:hidden;color:#bfe3d0;padding:0 6px;line-height:1.3}
#bar{display:flex;gap:5px;height:104px}
.tool{flex:1;border:2px solid var(--line);background:var(--panel);border-radius:12px;padding:4px 2px;font-size:13px;text-align:center;display:flex;flex-direction:column;align-items:center;line-height:1.15;position:relative}
.tool.sel{border-color:var(--gold);background:#2a4d3c}
.tool.hint{animation:pulse 1s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 4px #ffd27a88}}
.tool small{display:block;opacity:.75;font-size:10px;margin-top:2px}
.tool canvas{width:52px;height:38px}
.tool .vs{display:flex;gap:2px;justify-content:center;margin-top:2px}
.tool .vs i{width:14px;height:14px;border-radius:50%;font-style:normal;font-size:9px;font-weight:800;color:#111;display:inline-flex;align-items:center;justify-content:center;border:1px solid #111}
/* modal */
#modal{position:absolute;inset:0;background:#0f2a22e6;display:flex;align-items:center;justify-content:center;padding:16px;z-index:10}
.modal-card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:16px;max-width:420px;width:100%;max-height:100%;overflow:auto}
.modal-card h2{margin-bottom:6px}
#modal-actions{margin-top:12px;flex-wrap:wrap}
#toast{position:absolute;left:50%;bottom:24px;transform:translateX(-50%);background:var(--gold);color:#0f2a22;padding:8px 14px;border-radius:10px;font-weight:700;z-index:20}
/* result & board */
.big-num{font-size:40px;font-weight:800;color:var(--gold);text-align:center;margin:4px 0}
.stars{font-size:32px;text-align:center}
.breakdown{display:grid;grid-template-columns:1fr auto;gap:4px 12px;font-size:14px}
.breakdown span:nth-child(even){text-align:right}
.tips li{margin:6px 0;line-height:1.4}
.rank-banner{text-align:center;font-size:16px;background:var(--panel2);border-radius:12px;padding:10px}
.rank-banner b{color:var(--gold);font-size:22px}
.tabs{display:flex;gap:6px}
.tabs button{flex:1;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:8px}
.tabs button.on{border-color:var(--gold);color:var(--gold)}
.lb{width:100%;border-collapse:collapse;font-size:14px}
.lb td,.lb th{padding:7px 5px;border-bottom:1px solid var(--line);text-align:left}
.lb th{color:var(--gold);font-size:12px}
.lb td.num,.lb th.num{text-align:right}
.lb tr.me td{background:#2a4d3c}
.lb .rj{color:var(--bad)}
.datenav{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.datenav button{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:4px 12px}
.datenav button:disabled{opacity:.3}
.legend-demo{display:flex;gap:10px;flex-wrap:wrap;align-items:center;font-size:13px}

/* season progress: 12 weeks, stage boundaries marked */
#progress{display:flex;gap:2px;padding:0 2px}
#progress .wk{flex:1;position:relative;height:20px;background:var(--panel);border-radius:4px;overflow:hidden;font-size:10px;text-align:center;line-height:20px;color:var(--muted)}
#progress .wk i{position:absolute;inset:0 auto 0 0;background:#3c7a5f;width:0}
#progress .wk span{position:relative}
#progress .wk.cur{outline:1.5px solid var(--gold);color:var(--text);font-weight:700}
#progress .wk.done{color:var(--text)}
#progress .wk.st-start{margin-left:4px}
#progress .wk.flower::after{content:"🌼";position:absolute;right:0;top:-1px;font-size:8px}
.pace{display:flex;gap:6px;margin:10px 0 2px}
.pace button{flex:1;background:var(--panel2);border:2px solid var(--line);border-radius:10px;padding:6px 2px;font-size:13px;line-height:1.2}
.pace button small{display:block;opacity:.7;font-size:10px}
.pace button.on{border-color:var(--gold);color:var(--gold)}
.pace button:disabled{opacity:.45}
.pace-note{font-size:12px;color:var(--muted);margin:2px 0 4px}
.tabs.sub{margin:6px 0}.tabs.sub button{padding:4px;font-size:12px}

.chal{display:flex;gap:10px;padding:10px 0;border-top:1px solid var(--line)}
.chal.done .ic{opacity:.6}
.chal .ic{flex:none;width:48px;height:48px;background:var(--panel2);border-radius:10px}
.chal-main{flex:1;min-width:0}
.chal-head{display:flex;flex-direction:column;gap:1px;margin-bottom:2px}
.chal-head span{color:var(--gold)}
.chal p{margin:2px 0 6px;color:var(--muted)}
.chal-act{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.chal-act .primary{padding:7px 16px}
.small-btn{padding:6px 12px;font-size:13px}
.chal .score-line{margin:0;gap:10px}

.stack{display:flex;flex-direction:column;align-items:center;gap:8px;width:100%}
.stack input{max-width:320px;font-size:17px}
input.code{text-align:center;font-size:30px;letter-spacing:10px;font-variant-numeric:tabular-nums}
.stack .row{flex-wrap:wrap;justify-content:center}
code{background:var(--panel);padding:2px 6px;border-radius:6px;font-size:12px}