@font-face{font-family:'DM Serif Display';font-style:normal;font-weight:400;font-display:swap;src:url('./brand/DMSerifDisplay-Regular.woff2') format('woff2')}
@font-face{font-family:'DM Sans';font-style:normal;font-weight:100 1000;font-display:swap;src:url('./brand/DMSans.woff2') format('woff2')}
/* Stilldrop: one shared design system for every surface in both appearances. */
:root{
  color-scheme:light;--paper:#f7f6ef;--surface:#fffef8;--soft:#eaf0e4;--ink:#234c4b;--muted:#50695f;--line:#ccd8ca;--teal:#286b70;--hover:#e0ebdf;--hover-wash:#66bfc718;--focus:#286b70;
  --button:#295d63;--button-ink:#fffef8;--button-hover:#1c4c53;--gold:#895d20;--gold-wash:#d5ad5a18;--warning-bg:#f5edda;--warning-line:#c6af81;--warning-ink:#785624;
  --board-top:#fffffa;--board-bottom:#edf4ed;--board-line:#d8dfce;--board-inset:#dfe8dd;--dot:#6a9287;--preview:#397f87;--halo:#63988d;--water-light:#93dae0;--water-mid:#63c0cc;--water-deep:#3698ad;--water-edge:#287c96;--water-rim:#b9edf0;--water-shadow:#42899a;
  --shadow:#173b3226;--backdrop:#162e3a72;--disabled:#6c7c72;--serif:'DM Serif Display',Georgia,'Times New Roman',serif;--sans:'DM Sans','Segoe UI',Arial,sans-serif;
}
:root[data-theme=dark]{
  color-scheme:dark;--paper:#101e22;--surface:#182c30;--soft:#20373b;--ink:#e0eeea;--muted:#adbfba;--line:#3d5557;--teal:#8bd4ce;--hover:#29464a;--hover-wash:#8bd4ce16;--focus:#b0e8df;
  --button:#a1ddd3;--button-ink:#153336;--button-hover:#bceee4;--gold:#e3bb6c;--gold-wash:#e3bb6c10;--warning-bg:#343124;--warning-line:#877344;--warning-ink:#edcf93;
  --board-top:#1d3439;--board-bottom:#172a30;--board-line:#456063;--board-inset:#304a4e;--dot:#789b97;--preview:#a1ddd3;--halo:#9bd2c3;--water-light:#c0f4e9;--water-mid:#82d9d1;--water-deep:#4aadb9;--water-edge:#307e97;--water-rim:#e1fff5;--water-shadow:#061317;
  --shadow:#00000055;--backdrop:#030b12b8;--disabled:#93a8a3;
}
*{box-sizing:border-box}html{min-width:280px;scrollbar-gutter:stable;overflow-anchor:none}body{margin:0;background:var(--paper);color:var(--ink);font:14px/1.5 var(--sans);-webkit-font-smoothing:antialiased}button,input,select,textarea{font:inherit}button{color:inherit;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent}button:disabled{cursor:default}button,select,textarea{outline-offset:4px}button:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--focus)}button svg{flex-shrink:0}[hidden]{display:none!important}body:has(dialog[open]){overflow:hidden}::selection{background:var(--teal);color:var(--paper)}
.app-shell{max-width:1000px;margin:auto;padding:0 36px}.site-header{display:flex;align-items:center;justify-content:space-between;min-height:80px;gap:18px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:9px;padding:0;background:none;border:0;font:38px/1 var(--serif);letter-spacing:-2px}.brand-mark{display:block;width:184px;line-height:0}.brand-mark img{display:block;width:100%;height:auto}.brand-dark{display:none!important}:root[data-theme=dark] .brand-light{display:none}:root[data-theme=dark] .brand-dark{display:block!important}.brand small{font:9px/1 var(--sans);letter-spacing:1.2px;border:1px solid var(--line);padding:5px 6px;border-radius:4px;margin-left:1px;color:var(--muted)}.main-nav{display:flex;gap:23px}.main-nav button{background:none;border:0;border-bottom:2px solid transparent;min-height:44px;padding:13px 0 11px;font-size:12px;color:var(--muted)}.main-nav button.active{border-color:var(--teal);color:var(--ink);font-weight:600}.main-nav button:hover{color:var(--ink)}.header-actions{display:flex;gap:6px}.icon-button{width:44px;height:44px;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);background:transparent;border-radius:50%;transition:background .18s}.icon-button svg{width:18px;height:18px}.icon-button:hover{background:var(--hover)}.icon-button[aria-pressed=true]{background:var(--soft);border-color:var(--teal)}
.view{animation:appear .25s ease both}.play-view{display:block;max-width:440px;margin:0 auto;padding:25px 0 0}.puzzle-intro{display:grid;grid-template-columns:minmax(0,1fr) 72px;column-gap:16px;row-gap:6px;margin-bottom:15px}.puzzle-intro h1{grid-column:1;grid-row:1;font:35px/1.12 var(--serif);letter-spacing:-1.2px;margin:0 0 3px}.eyebrow{font-size:10px;letter-spacing:1.4px;font-weight:600;display:flex;gap:7px;align-items:center;line-height:1.5;color:var(--muted)}.puzzle-intro .eyebrow{grid-column:1;grid-row:2}.live-dot{width:6px;height:6px;background:var(--teal);border-radius:50%}.puzzle-date{grid-column:1;grid-row:3;margin:0;font-size:14px}.puzzle-name{display:none}.goal-card{grid-column:2;grid-row:1 / span 3;align-self:center;border-left:1px solid var(--line);padding-left:12px}.goal-label{white-space:nowrap;display:block;font-size:8px;font-weight:600;letter-spacing:.7px;color:var(--muted)}.goal-card>div{display:flex;align-items:baseline;gap:4px;margin:3px 0}.goal-card #targetNumber{font:35px/1.1 var(--serif);letter-spacing:-1px;color:var(--gold)}.goal-unit{white-space:nowrap;font-size:12px;color:var(--muted)}.short-rule{grid-column:1 / -1;grid-row:4;font-size:13px;line-height:1.6;color:var(--muted);margin:5px 0 0}.puzzle-intro>.text-button{grid-column:1 / -1;grid-row:5;justify-self:start;text-decoration:underline;text-decoration-color:var(--line);margin:0}.intro-round .puzzle-intro h1,.intro-round .puzzle-intro .eyebrow{grid-column:1 / -1}.text-button{background:none;border:0;padding:4px 0;min-height:36px;font-size:12px;color:var(--teal);text-underline-offset:4px}.text-button:hover{text-decoration:underline}.text-button:disabled{color:var(--disabled)}
.game-area{min-width:0;width:100%}.lesson-card{display:flex;align-items:center;gap:14px;background:var(--soft);border-left:3px solid var(--teal);border-radius:0 10px 10px 0;padding:11px 14px;margin-bottom:14px}.lesson-step{font:27px/1 var(--serif);color:var(--teal)}.lesson-card strong{font-size:13px;font-weight:600}.lesson-card p{font-size:12px;line-height:1.5;color:var(--muted);margin:4px 0 0}.board-topline{display:flex;justify-content:space-between;align-items:center;margin:0 4px 10px;font-size:9px;letter-spacing:1px;color:var(--muted)}.board-counters{display:flex;align-items:center;gap:13px;font-size:12px;letter-spacing:0}.board-counters b{font-size:14px;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums}.counter-divider{height:12px;width:1px;background:var(--line)}.board{width:100%;aspect-ratio:1;position:relative;background:linear-gradient(145deg,var(--board-top),var(--board-bottom));border:1px solid var(--board-line);border-radius:24px;box-shadow:0 14px 32px -24px var(--shadow);overflow:hidden;isolation:isolate}.board::before{content:'';position:absolute;inset:12px;border:1px solid var(--board-inset);border-radius:17px;pointer-events:none;z-index:1}.board-grain{display:none}.board>svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible;pointer-events:none}.cell-grid{position:absolute;inset:7%;display:grid;grid-template-columns:repeat(var(--size,5),1fr);grid-template-rows:repeat(var(--size,5),1fr);touch-action:pan-y pinch-zoom;user-select:none;-webkit-user-select:none}.cell{border:0;background:transparent;border-radius:14px;position:relative;padding:0;outline-offset:-7px}.cell::before{content:'';position:absolute;left:50%;top:50%;width:5px;height:5px;background:var(--dot);border-radius:50%;transform:translate(-50%,-50%);pointer-events:none}.cell.occupied::before,.cell:disabled::before{opacity:0}.cell.home-cell::before{background:var(--gold)}.cell::after{content:'';position:absolute;inset:19%;border-radius:50%;border:1px solid transparent;pointer-events:none}.cell:hover:not(:disabled)::after{border-color:var(--preview);background:var(--hover-wash)}.cell:focus-visible{outline:2px solid var(--focus);background:var(--hover-wash)}.cell.hinted::after,.cell.lesson-guide::after{inset:24%;border:2px solid var(--teal);background:var(--hover-wash);animation:lessonPulse 1.6s ease-in-out infinite}.board.busy .cell,.board.solved .cell-grid{pointer-events:none}
.interaction-note{text-align:center;font-size:11px;color:var(--muted);margin:10px 0 3px;min-height:17px}.board.solved+.interaction-note{visibility:hidden}.board-controls{display:flex;justify-content:center;gap:16px;margin:0 0 8px}.control-button{min-height:44px;display:flex;align-items:center;justify-content:center;gap:7px;background:none;border:0;border-radius:10px;font-size:12px;color:var(--muted);padding:9px 12px}.control-button svg{width:16px;height:16px}.control-button:hover:not(:disabled){background:var(--hover);color:var(--ink)}.control-button:disabled{color:var(--disabled);opacity:.6}.path-summary{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:7px 16px;min-height:20px}.drop-trail{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:11px;font-variant-numeric:tabular-nums}.drop-trail b{color:var(--teal);font-weight:600}.trail-arrow{color:var(--muted)}.path-summary>span{font-size:10px;color:var(--muted)}.board-message{font-size:12px;text-align:center;color:var(--muted);margin:8px 0 0;min-height:20px;line-height:1.6}.board-message.warn{color:var(--warning-ink)}.stuck-panel{margin-top:15px;padding:15px 18px;border:1px solid var(--warning-line);border-radius:16px;background:var(--warning-bg);text-align:center;color:var(--warning-ink)}.stuck-panel p{font-size:13px;line-height:1.6;margin:0 0 10px}
.primary-button,.secondary-button{border:0;border-radius:24px;min-height:44px;padding:11px 20px;font-size:12px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:12px;transition:background .18s}.primary-button{background:var(--button);color:var(--button-ink)}.primary-button:hover:not(:disabled){background:var(--button-hover)}.secondary-button{background:var(--soft);color:var(--ink);border:1px solid var(--line)}.secondary-button:hover:not(:disabled){background:var(--hover);border-color:var(--teal)}.primary-button:disabled,.secondary-button:disabled{opacity:.55}.win-panel{position:absolute;z-index:5;inset:auto 16px 17px;text-align:center;animation:appear .4s ease both}.win-eyebrow{font-size:10px;letter-spacing:1.7px;color:var(--muted)}.win-panel h2{font:34px/1.1 var(--serif);letter-spacing:-1px;margin:7px 0}.win-panel p{font-size:12px;color:var(--muted);margin:0 0 13px;line-height:1.6}.win-actions{display:flex;align-items:center;justify-content:center;gap:10px}.win-retry{font-size:11px;min-height:32px;margin-top:4px}.finish-reflection{text-align:center;border-top:1px solid var(--line);margin-top:16px;padding-top:16px;animation:appear .25s ease both}.completion-note{font:22px/1.4 var(--serif);margin:12px 0 5px}.bonus-note{color:var(--gold);font-size:12px;margin:8px 0}.bonus-note:empty{display:none}.finish-reflection>.text-button{min-height:44px;margin:0 6px}#routeDetails{padding:18px 17px 4px;background:var(--soft);border-radius:16px;margin-top:12px}#puzzleInsight{font-size:13px;line-height:1.65;margin:0 0 13px}#scoreHistory,.review-detail{font-size:12px;color:var(--muted);line-height:1.6}.reflection-actions{display:flex;gap:8px;justify-content:center;flex-wrap:wrap}.reflection-actions button{font-size:12px;padding:9px 14px}.share-options{display:flex;gap:16px;justify-content:center;align-items:center;font-size:12px;color:var(--muted);flex-wrap:wrap}.share-options button{min-height:44px}.next-moment{border-top:1px solid var(--line);padding:21px 0 6px;margin-top:20px;text-align:center}.next-moment .eyebrow{justify-content:center;font-size:9px;letter-spacing:1.6px}.next-moment h2{font:27px/1.2 var(--serif);letter-spacing:-.4px;margin:9px 0}.next-moment p{font-size:12px;line-height:1.65;color:var(--muted);max-width:340px;margin:0 auto 12px}.journey-strip{display:grid;grid-template-columns:repeat(var(--stops,7),minmax(0,1fr));gap:2px;margin:22px 0 0;border-top:1px solid var(--line);padding-top:10px}.journey-stop{isolation:isolate;position:relative;min-width:0;min-height:44px;background:none;border:0;font-size:10px;color:var(--muted);border-radius:8px;font-variant-numeric:tabular-nums}.journey-stop::before{content:'';position:absolute;width:22px;height:22px;top:11px;left:50%;transform:translateX(-50%);border:1px solid var(--line);border-radius:50%;z-index:-1}.journey-stop.done::before{background:var(--soft);border-color:var(--teal)}.journey-stop.done{color:var(--teal)}.journey-stop.current{font-weight:700;color:var(--ink)}.journey-stop.current::before{border:2px solid var(--gold)}.journey-stop:disabled{color:var(--disabled)}.journey-stop:hover:not(:disabled){background:var(--hover)}.save-status{text-align:center;font-size:11px;color:var(--muted);line-height:1.6;margin:8px 0 0}
.collection-view,.rhythm-view{padding:40px 0 10px}.section-top{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:26px}.section-top h1{font:44px/1.1 var(--serif);letter-spacing:-1.5px;margin:15px 0 12px}.section-top p{color:var(--muted);font-size:13px;margin:0;line-height:1.6}.collection-stat{text-align:right;display:flex;flex-direction:column;gap:5px;min-width:90px;color:var(--muted);font-size:11px}.collection-stat strong{font:42px var(--serif);color:var(--teal)}.collection-progress{height:3px;background:var(--line);border-radius:3px;overflow:hidden}.collection-progress span{display:block;background:var(--teal);height:100%;transition:width .4s}.journey-list{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:25px}.journey-day{display:flex;align-items:center;gap:14px;text-align:left;min-height:83px;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:15px 18px;color:var(--ink)}.journey-day>span:nth-child(2){flex:1}.journey-day strong{font:21px/1.2 var(--serif);display:block}.journey-day small{display:block;font-size:12px;margin-top:6px;color:var(--muted)}.journey-number{font:18px/1 var(--sans);font-variant-numeric:tabular-nums;color:var(--muted)}.journey-day.complete .journey-number{color:var(--teal)}.journey-day.locked{background:transparent;color:var(--muted)}.journey-day.current{border-color:var(--gold)}.journey-day:hover:not(:disabled){border-color:var(--teal);background:var(--hover)}.journey-day:focus-visible{outline-offset:2px}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:24px}.stat-card{padding:24px;border:1px solid var(--line);border-radius:16px;background:var(--soft)}.stat-card strong{font:43px var(--serif);display:block;margin-bottom:7px}.stat-card span{font-size:12px;color:var(--muted)}.rhythm-card{padding:24px 28px;background:var(--surface);border:1px solid var(--line);border-radius:18px;margin-bottom:20px}.card-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:18px}.rhythm-card h2{font:26px/1.2 var(--serif);margin:0 0 12px}.card-heading h2{margin:0}.card-heading span{font-size:12px;color:var(--muted)}.recent-row{display:flex;align-items:center;justify-content:space-between;padding:8px 0;border-top:1px solid var(--line);gap:15px;font-size:12px}.recent-row:first-child{border-top:0}.recent-row button{background:none;border:0;text-align:left;min-height:44px;padding:5px 0;font-size:13px}.recent-row button:hover{text-decoration:underline}.recent-score{color:var(--muted);white-space:nowrap}.empty-state{padding:16px 0;color:var(--muted);font-size:13px;line-height:1.7}.beta-report p{font-size:13px;line-height:1.7;color:var(--muted)}.beta-report .reflection-actions{justify-content:flex-start}.save-note,.subtle{color:var(--muted);font-size:12px;line-height:1.65}.save-note .text-button{min-height:44px}.review-banner{max-width:700px;margin:16px auto 0;text-align:center;padding:12px 18px;border:1px solid var(--warning-line);border-radius:12px;background:var(--warning-bg);color:var(--warning-ink);font-size:12px;line-height:1.5}.review-banner button{margin-left:5px}.site-footer{border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px 20px;color:var(--muted);font-size:11px;padding:16px 0 22px;margin:30px auto 0}.site-footer .text-button{font-size:11px;min-height:44px;padding:0}
dialog{position:fixed;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:24px;box-shadow:0 30px 100px var(--shadow);max-width:calc(100vw - 32px);max-height:calc(100dvh - 32px);overflow:auto;padding:32px 28px 24px}dialog::backdrop{background:var(--backdrop);backdrop-filter:blur(7px)}dialog h2{font:32px/1.15 var(--serif);letter-spacing:-1px;margin:14px 0 18px;font-weight:400}dialog>p{font-size:13px;line-height:1.65;color:var(--muted)}dialog>.eyebrow{padding-right:28px}.dialog-close{position:absolute;right:10px;top:10px;border:0;font-size:25px}.help-dialog{width:420px}.small-dialog{width:410px}.dialog-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}.full-width{width:100%;margin:4px 0}.help-steps{list-style:none;padding:0;margin:4px 0 12px;counter-reset:step}.help-steps li{counter-increment:step;position:relative;padding-left:29px;margin:16px 0;color:var(--muted);font-size:13px;line-height:1.6}.help-steps li::before{content:counter(step);position:absolute;left:0;top:2px;width:19px;height:19px;background:var(--soft);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--ink);font-size:10px}.help-steps b{color:var(--ink);font-weight:600}.keyboard-note{text-align:center;font-size:11px;line-height:1.6;margin:16px 0 0;color:var(--muted)}.tutorial-art{width:146px;height:130px;position:relative;margin:12px auto 0}.tutorial-cross{position:absolute;inset:10px;background:linear-gradient(90deg,transparent calc(50% - .5px),var(--line) calc(50% - .5px),var(--line) calc(50% + .5px),transparent calc(50% + .5px)),linear-gradient(transparent calc(50% - .5px),var(--line) calc(50% - .5px),var(--line) calc(50% + .5px),transparent calc(50% + .5px))}.demo-drop,.demo-center{position:absolute;left:calc(50% - 12px);top:calc(50% - 12px);width:24px;height:24px;background:radial-gradient(circle at 35% 25%,var(--water-light),var(--water-mid) 45%,var(--water-edge));border-radius:50%;box-shadow:0 3px 5px var(--shadow)}.d1{--dx:0px;--dy:-45px}.d2{--dx:45px;--dy:0px}.d3{--dx:0px;--dy:45px}.d4{--dx:-45px;--dy:0px}.demo-drop{animation:demoFlow 3.4s ease-in-out infinite}.demo-center{animation:demoGrow 3.4s ease-in-out infinite}.demo-cursor{position:absolute;left:calc(50% + 12px);top:calc(50% + 12px);font-size:24px;color:var(--teal);animation:demoTap 3.4s infinite}.solution-dialog{width:460px}.solution-dialog>svg{width:100%;display:block;background:linear-gradient(145deg,var(--board-top),var(--board-bottom));border-radius:18px;border:1px solid var(--board-line)}#replayStep{min-height:20px;text-align:center;color:var(--ink)}.solution-dialog .dialog-actions{justify-content:center}.solution-dialog .subtle{text-align:center;margin-bottom:0}.feedback-dialog{width:440px}.feedback-dialog label{display:block;font-size:13px;margin:15px 0}.feedback-dialog select,.feedback-dialog textarea,.share-text{display:block;width:100%;margin-top:7px;min-height:44px;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font:16px/1.45 var(--sans);color:var(--ink);background:var(--paper)}textarea{resize:vertical}textarea::placeholder{color:var(--muted);opacity:1}.share-text{min-height:170px;font-size:13px;line-height:1.6}.theme-options{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin-top:24px}.theme-option{border:1px solid var(--line);border-radius:12px;background:var(--paper);padding:13px 8px;font-size:13px;min-height:94px}.theme-option:hover{background:var(--hover)}.theme-option[aria-pressed=true]{border:2px solid var(--teal);background:var(--soft);padding:12px 7px;font-weight:600}.theme-swatch{display:block;width:29px;height:29px;border-radius:50%;border:1px solid var(--muted);margin:0 auto 9px}.light-swatch{background:#f7f6ef}.dark-swatch{background:#101e22}.system-swatch{background:linear-gradient(90deg,#f7f6ef 50%,#101e22 50%)}#themeStatus{min-height:40px}.toast{position:fixed;bottom:max(22px,env(safe-area-inset-bottom));left:50%;transform:translate(-50%,15px);background:var(--button);color:var(--button-ink);padding:12px 20px;border:1px solid var(--line);border-radius:24px;font-size:12px;z-index:20;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;max-width:calc(100vw - 32px);width:max-content;text-align:center;box-shadow:0 5px 25px var(--shadow)}.toast.show{opacity:1;transform:translate(-50%,0)}
@keyframes appear{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}@keyframes lessonPulse{0%,100%{transform:scale(.85);opacity:.7}50%{transform:scale(1.1);opacity:1}}@keyframes demoFlow{0%,20%,100%{transform:translate(var(--dx),var(--dy)) scale(1);opacity:1}42%,73%{transform:translate(0,0) scale(.7);opacity:1}82%{opacity:0;transform:translate(0,0) scale(.3)}90%{opacity:0;transform:translate(var(--dx),var(--dy))}}@keyframes demoGrow{0%,25%,87%,100%{transform:scale(0)}45%,75%{transform:scale(1.6)}80%{transform:scale(1.65);opacity:1}86%{opacity:0}}@keyframes demoTap{0%,10%,70%,100%{opacity:0}22%,28%{opacity:1;transform:scale(1)}30%{transform:scale(.8)}40%{opacity:0}}
@media(max-width:720px){.app-shell{padding:0 20px}.site-header{min-height:112px;position:relative;align-items:flex-start;padding-top:12px;gap:8px}.brand{min-height:44px;gap:7px}.brand-mark{width:140px}.brand small{font-size:8px;margin-left:3px;padding:4px 5px}.header-actions{gap:3px}.main-nav{position:absolute;bottom:0;left:50%;transform:translateX(-50%);gap:27px;white-space:nowrap}.main-nav button{font-size:12px;min-height:44px;padding:10px 0}.play-view{padding-top:19px}.puzzle-intro{column-gap:12px;row-gap:5px;grid-template-columns:minmax(0,1fr) 68px;margin-bottom:10px}.puzzle-intro h1{font-size:29px;letter-spacing:-.8px}.puzzle-intro .eyebrow{font-size:9px}.puzzle-date{font-size:12px}.goal-card{padding-left:8px} .goal-card #targetNumber{font-size:30px}.short-rule{font-size:12px;line-height:1.5}.puzzle-intro>.text-button{font-size:11px;min-height:32px}.lesson-card{padding:9px 11px;gap:11px;margin-bottom:10px}.lesson-card strong{font-size:12px}.lesson-card p{font-size:12px}.lesson-step{font-size:24px}.board-topline{font-size:8px;margin-bottom:8px}.board-counters{font-size:11px}.board{border-radius:21px}.board::before{inset:9px;border-radius:15px}.board-controls{gap:6px}.control-button{padding:8px 10px}.win-panel{inset:auto 12px 10px}.win-panel h2{font-size:29px}.win-panel p{font-size:11px;margin-bottom:10px}.win-eyebrow{font-size:9px}.win-retry{margin-top:2px}.journey-strip{grid-template-columns:repeat(var(--stops,7),minmax(0,1fr));gap:0;margin-top:17px}.journey-stop{font-size:11px}.journey-stop::before{width:26px;height:26px;top:9px}.collection-view,.rhythm-view{padding-top:30px}.section-top h1{font-size:36px}.section-top .eyebrow{font-size:9px;letter-spacing:1.2px}.section-top p{font-size:12px}.collection-stat{min-width:65px;font-size:10px}.collection-stat strong{font-size:36px}.journey-list{grid-template-columns:1fr;gap:8px}.journey-day{min-height:76px;padding:13px 15px}.stats-grid{gap:8px}.stat-card{padding:18px 10px}.stat-card strong{font-size:34px}.stat-card span{font-size:11px}.rhythm-card{padding:20px 17px}.card-heading{gap:8px}.card-heading h2{font-size:22px}.site-footer{gap:0 14px;margin-top:22px;padding-top:12px}.site-footer span:first-child{flex:1}.site-footer span:last-child{width:100%;font-size:10px}.completion-note{font-size:20px}dialog{padding:30px 20px 20px}dialog h2{font-size:30px}.dialog-actions{gap:8px;flex-wrap:wrap}.dialog-actions button{flex:1;padding:10px 12px}.solution-dialog .dialog-actions{flex-wrap:nowrap}}
@media(max-width:360px){.app-shell{padding:0 12px}.site-header{gap:6px}.brand{gap:5px}.brand-mark{width:clamp(108px,calc(100vw - 196px),124px)}.brand small{display:none}.header-actions{gap:0}.icon-button{width:42px}.puzzle-intro h1{font-size:26px}.win-panel h2{font-size:25px}.win-panel p{font-size:10px}.win-eyebrow{font-size:8px}.win-panel{bottom:5px}.win-retry{min-height:30px;font-size:10px}.control-button{padding:8px}.section-top{gap:12px}.collection-stat{min-width:55px}.collection-stat span{max-width:68px}.theme-options{gap:6px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.demo-drop{transform:translate(var(--dx),var(--dy))}.demo-center{transform:scale(.5)}.demo-cursor{opacity:1}.cell.lesson-guide::after,.cell.hinted::after{opacity:1}}
@media(forced-colors:active){.cell::before,.demo-drop{background:ButtonText}.cell:focus-visible{outline-color:Highlight}.cell.hinted::after,.cell.lesson-guide::after{border-color:Highlight}.theme-option[aria-pressed=true]{outline:2px solid Highlight}.journey-stop.current::before{border-color:Highlight}}

.new-day-banner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px 16px;padding:12px 16px;margin-bottom:18px;border:1px solid var(--line);border-radius:14px;background:var(--soft);color:var(--ink)}.new-day-banner p{flex:1 1 170px;font-size:12px;line-height:1.6;margin:0}.new-day-banner button{flex-shrink:0}

/* The calendar archive and original practice collection use the same theme tokens. */
.collection-notice{color:var(--muted);font-size:14px;line-height:1.6;margin:20px 0}.practice-collection{margin-top:32px;border-top:1px solid var(--line);padding-top:24px}.practice-collection summary{cursor:pointer;color:var(--ink);font-size:17px;min-height:44px;padding:10px 0}.practice-collection>p{color:var(--muted);font-size:14px;line-height:1.6}.practice-collection summary:focus-visible{outline:3px solid var(--teal);outline-offset:4px;border-radius:4px}

@media(max-width:600px){.collection-view .section-top{flex-direction:column;align-items:flex-start;gap:18px}.collection-stat{flex-direction:row;align-items:center;text-align:left;gap:12px;font-size:12px}.collection-stat span{max-width:none}.collection-stat strong{font-size:30px}}

/* The trigger stays in place while its feedback options overlay the form. */
.feedback-field{display:block;font-size:13px;margin:15px 0}
.choice-control{position:relative;margin-top:7px}
.choice-button{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;min-height:46px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink);font:16px/1.45 var(--sans);text-align:left;cursor:pointer}
.choice-value{min-width:0;overflow-wrap:anywhere}
.choice-arrow{display:block;flex:none;width:8px;height:8px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:translateY(-2px) rotate(45deg);margin:0 3px}
.choice-button[aria-expanded="true"]{border-color:var(--teal)}
.choice-button[aria-expanded="true"] .choice-arrow{transform:translateY(2px) rotate(225deg)}
.choice-list{position:absolute;z-index:20;left:0;right:0;top:calc(100% + 6px);padding:5px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--ink);box-shadow:0 8px 28px var(--shadow);overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin}
.choice-list.opens-up{top:auto;bottom:calc(100% + 6px)}
.choice-option{position:relative;min-height:44px;padding:11px 30px 11px 10px;border-radius:7px;font:15px/1.45 var(--sans);cursor:pointer;overflow-wrap:anywhere}
.choice-option.is-active{background:var(--hover);outline:1px solid var(--focus);outline-offset:-1px}
.choice-option[aria-selected="true"]::after{content:"✓";position:absolute;right:10px;top:11px;color:var(--teal);font-weight:700}
@media (forced-colors:active){.choice-option.is-active{outline:2px solid Highlight}.choice-option[aria-selected="true"]::after{color:ButtonText}}

.progress-transfer{margin:0 0 24px;border:1px solid var(--line);border-radius:14px;padding:10px 18px;background:var(--surface)}.progress-transfer summary{cursor:pointer;color:var(--teal);font-size:13px;min-height:44px;padding:12px 0}.progress-transfer p,.progress-transfer li{font-size:13px;line-height:1.7;color:var(--muted)}.progress-transfer ol{padding-left:20px}.progress-transfer li{padding:3px 0}.progress-transfer b{color:var(--ink);font-weight:600}.progress-transfer a{color:var(--teal);text-underline-offset:3px}.progress-transfer summary:focus-visible,.progress-transfer a:focus-visible{outline:2px solid var(--focus);outline-offset:3px}

/* Quiet reading space below play; native disclosures keep it compact on phones. */
.skip-link{position:fixed;top:10px;left:12px;z-index:100;padding:12px 18px;border:2px solid var(--focus);border-radius:8px;background:var(--surface);color:var(--ink);transform:translateY(-160%);font-weight:600}
.skip-link:focus{transform:translateY(0)}
a:focus-visible,summary:focus-visible{outline:2px solid var(--focus);outline-offset:4px}
#mainContent:focus{outline:none}
.no-script{max-width:700px;margin:20px auto;padding:18px 24px;border:1px solid var(--line);background:var(--surface);color:var(--ink)}
.no-script p{margin-bottom:0}
.about-game{display:grid;grid-template-columns:1.12fr 1fr;gap:56px;margin:48px auto 0;padding:36px 0 14px;border-top:1px solid var(--line)}
.about-game h2{font:32px/1.18 var(--serif);letter-spacing:-.7px;margin:12px 0 14px;text-wrap:balance}
.about-game p,.about-steps{font-size:13px;line-height:1.75;color:var(--muted)}
.about-game strong,.about-steps b{color:var(--ink);font-weight:600}
.about-steps{padding-left:20px;margin:18px 0 0}.about-steps li{padding-left:4px;margin:11px 0}.about-steps li::marker{color:var(--teal);font-variant-numeric:tabular-nums}
.game-questions h3{font:21px/1.3 var(--serif);margin:0 0 12px}
.game-questions details{border-bottom:1px solid var(--line)}
.game-questions summary{position:relative;list-style:none;cursor:pointer;min-height:48px;padding:14px 25px 14px 0;font-size:13px;font-weight:500;color:var(--ink)}
.game-questions summary::-webkit-details-marker{display:none}
.game-questions summary::after{content:'+';position:absolute;right:2px;top:12px;font-size:18px;font-weight:400;color:var(--teal)}
.game-questions details[open]>summary::after{content:'−'}
.game-questions details p{margin:0 20px 16px 0}
@media(max-width:720px){.about-game{grid-template-columns:1fr;gap:26px;margin-top:30px;padding-top:28px}.about-game h2{font-size:29px}.about-game .eyebrow{font-size:9px}.about-game p,.about-steps,.game-questions summary{font-size:13px}.site-footer{padding-bottom:max(22px,env(safe-area-inset-bottom))}}
@media(hover:none){.cell:hover:not(:disabled):not(.hinted):not(.lesson-guide)::after{border-color:transparent;background:none}}

/* Keep the play surface still while water, counters and messages update. */
.lesson-card{min-height:110px}
.lesson-card>div{min-width:0}
.board-message{min-height:3.2em}
.intro-round .board-message{min-height:4.8em}