:root{
  color-scheme:light;
  --app-height:100vh;
  --paper:#f5edda;
  --paper-deep:#ded1b7;
  --panel:rgba(255,252,244,.84);
  --panel-strong:#fffaf0;
  --panel-soft:rgba(90,73,45,.065);
  --ink:#302a22;
  --muted:#766d5f;
  --line:rgba(69,54,34,.2);
  --grid:#63533d;
  --grid-soft:rgba(99,83,61,.34);
  --gold:#b46f1d;
  --gold-strong:#8b4d0d;
  --aqua:#258a83;
  --aqua-soft:rgba(37,138,131,.12);
  --danger:#b53d4b;
  --danger-soft:rgba(181,61,75,.12);
  --hint:#7155bd;
  --hint-soft:rgba(113,85,189,.13);
  --shadow:0 24px 70px rgba(67,48,24,.18);
  --cell-bg:#fcf8ee;
  --given-bg:#e8deca;
  --selected-bg:#c8e3b8;
  --peer-bg:#e5f0d7;
  --highlight-ring:#5f995e;
  --match-bg:#f4e2c4;
  --app-pad:max(9px,env(safe-area-inset-top)) max(9px,env(safe-area-inset-right)) max(9px,env(safe-area-inset-bottom)) max(9px,env(safe-area-inset-left));
  font-family:Inter,ui-rounded,"Segoe UI",system-ui,-apple-system,BlinkMacSystemFont,sans-serif;
}
@supports(height:100svh){:root{--app-height:100svh}}
@supports(height:100dvh){:root{--app-height:100dvh}}
html[data-theme="night"]{
  color-scheme:dark;
  --paper:#171b25;
  --paper-deep:#0c1018;
  --panel:rgba(28,34,47,.86);
  --panel-strong:#242b3a;
  --panel-soft:rgba(226,235,255,.06);
  --ink:#f2efe5;
  --muted:#aaa99f;
  --line:rgba(225,232,248,.17);
  --grid:#d3c5a6;
  --grid-soft:rgba(211,197,166,.34);
  --gold:#f0b35e;
  --gold-strong:#ffd190;
  --aqua:#69d7cc;
  --aqua-soft:rgba(105,215,204,.14);
  --danger:#ff8791;
  --danger-soft:rgba(255,135,145,.13);
  --hint:#bd9cff;
  --hint-soft:rgba(189,156,255,.14);
  --shadow:0 28px 80px rgba(0,0,0,.42);
  --cell-bg:#232b3a;
  --given-bg:#303745;
  --selected-bg:#365f43;
  --peer-bg:#314a3a;
  --highlight-ring:#7bc686;
  --match-bg:#433a2d;
}
html[data-highlight="gold"]{--selected-bg:#ead487;--peer-bg:#f0e6b6;--highlight-ring:#a67b15}
html[data-highlight="orange"]{--selected-bg:#efbf8c;--peer-bg:#f1dfbd;--highlight-ring:#bd6b2d}
html[data-theme="night"][data-highlight="gold"]{--selected-bg:#655928;--peer-bg:#504a31;--highlight-ring:#dfc85b}
html[data-theme="night"][data-highlight="orange"]{--selected-bg:#6a4930;--peer-bg:#4f4033;--highlight-ring:#e89b5a}
*{box-sizing:border-box}
html,body{width:100%;height:100%;margin:0;overflow:hidden}
body{
  min-height:var(--app-height);
  color:var(--ink);
  background:
    radial-gradient(circle at 15% 12%,color-mix(in srgb,var(--gold) 13%,transparent),transparent 28%),
    radial-gradient(circle at 85% 16%,color-mix(in srgb,var(--aqua) 13%,transparent),transparent 30%),
    linear-gradient(145deg,var(--paper-deep),var(--paper));
}
button,select,input{font:inherit}
button{color:inherit;touch-action:manipulation}
button:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid var(--gold);outline-offset:2px}
[hidden]{display:none!important}
.app{
  position:relative;
  isolation:isolate;
  display:grid;
  grid-template-rows:auto minmax(0,1fr);
  gap:9px;
  width:100%;
  height:var(--app-height);
  min-height:0;
  overflow:hidden;
  padding:var(--app-pad);
}
.app::before,.app::after{content:"";position:absolute;z-index:-1;pointer-events:none;border-radius:50%;border:1px solid color-mix(in srgb,var(--aqua) 18%,transparent)}
.app::before{width:36vw;height:36vw;right:-16vw;top:8vh;box-shadow:inset 0 0 70px color-mix(in srgb,var(--aqua) 5%,transparent)}
.app::after{width:30vw;height:30vw;left:-15vw;bottom:-15vw;border-color:color-mix(in srgb,var(--gold) 18%,transparent)}
.topbar{min-height:48px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 3px}
.brand-lockup{display:flex;align-items:center;gap:10px;min-width:0}
.brand-lockup>div{display:grid;gap:1px;min-width:0}
.brand-kicker{font-size:9px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);font-weight:850;white-space:nowrap}
.brand-lockup strong{font-size:clamp(20px,2.2vw,29px);letter-spacing:-.055em;line-height:1;white-space:nowrap}
.brand-lockup em{font-style:normal;color:var(--aqua)}
.brand-mark{position:relative;display:grid;place-items:center;width:40px;height:40px;border-radius:13px;border:1px solid color-mix(in srgb,var(--gold) 42%,var(--line));background:linear-gradient(145deg,color-mix(in srgb,var(--gold) 13%,transparent),var(--panel));box-shadow:0 8px 24px color-mix(in srgb,var(--gold) 14%,transparent)}
.brand-mark::before{content:"";position:absolute;inset:8px;border:1px solid color-mix(in srgb,var(--aqua) 68%,transparent);background:repeating-linear-gradient(90deg,transparent 0 6px,color-mix(in srgb,var(--aqua) 25%,transparent) 6px 7px),repeating-linear-gradient(0deg,transparent 0 6px,color-mix(in srgb,var(--aqua) 25%,transparent) 6px 7px)}
.brand-mark i{width:6px;height:6px;border-radius:50%;background:var(--gold);box-shadow:0 0 13px var(--gold)}
.header-actions{display:flex;align-items:center;gap:6px}
.icon-button{min-width:44px;height:44px;border:1px solid var(--line);border-radius:13px;background:var(--panel-soft);display:inline-grid;place-items:center;cursor:pointer;font-weight:900;font-size:18px;box-shadow:inset 0 1px rgba(255,255,255,.08);transition:transform .18s ease,background .18s ease,border-color .18s ease}
.icon-button:hover{transform:translateY(-1px);background:color-mix(in srgb,var(--panel-strong) 82%,transparent);border-color:color-mix(in srgb,var(--aqua) 42%,var(--line))}
.help-button{grid-template-columns:auto auto;gap:6px;padding:0 12px}.help-button strong{font-size:11px}
.game-layout{min-height:0;width:100%;max-width:1460px;margin:0 auto;display:grid;grid-template-columns:minmax(250px,350px) minmax(0,1fr);gap:clamp(9px,1.6vw,22px)}
.command-panel,.board-panel{min-height:0;border:1px solid var(--line);background:var(--panel);backdrop-filter:blur(18px);box-shadow:var(--shadow)}
.command-panel{border-radius:24px;padding:clamp(13px,1.7vw,23px);display:flex;flex-direction:column;gap:clamp(8px,1.15vh,14px);overflow:hidden}
.intro-copy{display:grid;gap:6px}.eyebrow{display:flex;align-items:center;gap:6px;color:var(--aqua);font-size:10px;font-weight:900;letter-spacing:.14em;text-transform:uppercase}.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--aqua);box-shadow:0 0 10px var(--aqua)}
.intro-copy h1{font-size:clamp(27px,3vw,46px);line-height:.98;letter-spacing:-.06em;margin:0;max-width:9.5em}.intro-copy h1 span{display:block;color:var(--gold-strong)}
.intro-copy p{font-size:clamp(11px,1.05vw,14px);line-height:1.45;color:var(--muted);margin:0;max-width:34em}
.difficulty-picker{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}
.difficulty-picker button{min-width:0;min-height:48px;border:1px solid var(--line);border-radius:13px;background:var(--panel-soft);padding:7px 9px;text-align:left;cursor:pointer;display:grid;gap:1px;transition:transform .16s ease,border-color .16s ease,background .16s ease}
.difficulty-picker button:hover{transform:translateY(-1px);border-color:color-mix(in srgb,var(--aqua) 45%,var(--line))}
.difficulty-picker button.selected{border-color:var(--aqua);background:var(--aqua-soft);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--aqua) 20%,transparent)}
.difficulty-picker strong{font-size:11px}.difficulty-picker small{font-size:8px;color:var(--muted)}
.hud-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:5px}
.hud-card{min-width:0;padding:8px 4px;border-radius:11px;background:var(--panel-soft);border:1px solid color-mix(in srgb,var(--line) 75%,transparent);text-align:center;display:grid;gap:3px}
.hud-card span{font-size:7px;color:var(--muted);letter-spacing:.09em;text-transform:uppercase;font-weight:850;white-space:nowrap}.hud-card strong{font-size:clamp(13px,1.5vw,19px);line-height:1;white-space:nowrap}
.puzzle-record{display:grid;grid-template-columns:1fr 1.2fr 1fr;border:1px solid var(--line);border-radius:13px;overflow:hidden;background:color-mix(in srgb,var(--panel-strong) 45%,transparent)}
.puzzle-record>div{min-width:0;padding:8px 8px;display:grid;gap:2px}.puzzle-record>div+div{border-left:1px solid var(--line)}
.puzzle-record span{font-size:7px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:850;white-space:nowrap}.puzzle-record strong{font-size:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.side-actions{margin-top:auto;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}
.action-button{min-width:0;min-height:48px;padding:6px 8px;border-radius:13px;border:1px solid var(--line);background:var(--panel-soft);cursor:pointer;display:grid;grid-template-columns:25px 1fr;align-items:center;text-align:left;gap:3px}
.action-button>span{grid-row:1/3;font-size:19px;color:var(--aqua);text-align:center}.action-button strong{font-size:10px}.action-button small{font-size:8px;color:var(--muted)}
.action-button[disabled]{opacity:.48;cursor:not-allowed}.notes-button[aria-pressed="true"]{border-color:var(--hint);background:var(--hint-soft)}.notes-button[aria-pressed="true"]>span{color:var(--hint)}
.board-panel{position:relative;border-radius:28px;padding:clamp(9px,1.6vw,19px);display:grid;grid-template-rows:minmax(0,1fr) auto auto;gap:7px;overflow:hidden}
.board-panel::before{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(110deg,transparent 30%,color-mix(in srgb,var(--aqua) 4%,transparent),transparent 70%)}
.board-aura{position:absolute;width:min(68vw,750px);aspect-ratio:1;left:50%;top:44%;transform:translate(-50%,-50%);border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--gold) 10%,transparent),transparent 67%);pointer-events:none;filter:blur(10px)}
.board-shell{--board-inset:clamp(7px,1vw,12px);position:relative;z-index:1;align-self:center;justify-self:center;width:min(100%,calc(var(--app-height) - 190px),680px);aspect-ratio:1;border-radius:clamp(13px,1.8vw,23px);padding:var(--board-inset);background:linear-gradient(145deg,color-mix(in srgb,var(--panel-strong) 97%,transparent),color-mix(in srgb,var(--paper-deep) 72%,transparent));border:1px solid color-mix(in srgb,var(--gold) 28%,var(--line));box-shadow:0 24px 60px rgba(54,39,20,.2),inset 0 1px rgba(255,255,255,.35)}
.sudoku-board{width:100%;height:100%;display:grid;grid-template-columns:repeat(9,minmax(0,1fr));grid-template-rows:repeat(9,minmax(0,1fr));border:2px solid var(--grid);background:var(--grid);gap:1px;touch-action:manipulation}
.sudoku-cell{position:relative;min-width:0;min-height:0;padding:0;border:0;background:var(--cell-bg);display:grid;place-items:center;cursor:pointer;color:var(--aqua);font-weight:800;font-size:clamp(16px,3.4vw,34px);line-height:1;transition:background .16s ease,box-shadow .16s ease,transform .16s ease;color .16s ease}
.sudoku-cell:nth-child(9n+3),.sudoku-cell:nth-child(9n+6){border-right:2px solid var(--grid)}
.sudoku-cell:nth-child(n+19):nth-child(-n+27),.sudoku-cell:nth-child(n+46):nth-child(-n+54){border-bottom:2px solid var(--grid)}
.sudoku-cell.given{background:var(--given-bg);color:var(--ink);font-weight:950;cursor:default}
.sudoku-cell.peer{background:var(--peer-bg)}.sudoku-cell.match{background:var(--match-bg)}.sudoku-cell.selected{background:var(--selected-bg);box-shadow:inset 0 0 0 3px var(--highlight-ring);z-index:12}.sudoku-cell.conflict,.sudoku-cell.wrong{background:var(--danger-soft);color:var(--danger)}
.sudoku-cell.conflict::after,.sudoku-cell.wrong::after{content:"!";position:absolute;z-index:12;right:2px;top:1px;width:12px;height:12px;border-radius:50%;display:grid;place-items:center;background:var(--danger);color:#fff;font-size:8px;font-weight:1000}
.sudoku-cell.hint-pulse{z-index:13;animation:hint-pulse .72s ease both}.sudoku-cell.hint-pulse::before{content:"✦";position:absolute;z-index:12;left:2px;top:1px;color:var(--hint);font-size:10px}
.note-grid{position:absolute;inset:2px;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);font-size:clamp(6px,.82vw,10px);line-height:1;color:var(--muted);font-weight:750}.note-grid span{display:grid;place-items:center;min-width:0;min-height:0}.note-grid span.empty{visibility:hidden}
@keyframes hint-pulse{0%{transform:scale(1);box-shadow:inset 0 0 0 3px var(--hint)}45%{transform:scale(1.08);box-shadow:0 0 20px color-mix(in srgb,var(--hint) 60%,transparent),inset 0 0 0 3px var(--hint)}100%{transform:scale(1);box-shadow:inset 0 0 0 3px var(--hint)}}
.number-pad{position:relative;z-index:1;justify-self:center;width:min(100%,680px);display:grid;grid-template-columns:repeat(10,minmax(42px,1fr));gap:5px}
.number-pad button{position:relative;min-width:0;height:46px;border-radius:12px;border:1px solid var(--line);background:var(--panel-soft);cursor:pointer;font-size:19px;font-weight:900;transition:transform .14s ease,background .14s ease,border-color .14s ease}
.number-pad button:hover:not(:disabled){transform:translateY(-1px);background:color-mix(in srgb,var(--aqua) 11%,var(--panel-soft));border-color:color-mix(in srgb,var(--aqua) 50%,var(--line))}.number-pad button:active:not(:disabled){transform:translateY(1px)}
.number-pad button:disabled{opacity:.28;cursor:not-allowed;background:color-mix(in srgb,var(--muted) 8%,var(--panel-soft));border-color:color-mix(in srgb,var(--muted) 22%,transparent);transform:none}.number-pad button.constellation-blocked:disabled{opacity:.74;color:var(--hint);background:color-mix(in srgb,var(--hint-soft) 76%,var(--panel-soft));border-color:color-mix(in srgb,var(--hint) 58%,var(--line))}.number-pad button.constellation-blocked:disabled::after{content:"★";position:absolute;right:4px;top:2px;color:var(--hint);font-size:7px;line-height:1}.number-pad button.is-noted:not(:disabled){background:var(--aqua-soft);border-color:color-mix(in srgb,var(--aqua) 62%,var(--line));color:var(--aqua)}
.number-pad .clear-key{display:grid;place-items:center;align-content:center;gap:0;font-size:15px}.clear-key small{font-size:7px;text-transform:uppercase;color:var(--muted);letter-spacing:.06em}
.feedback-zone{position:relative;z-index:1;text-align:center;display:grid;gap:2px;min-height:34px;align-content:center}.status-message,.control-hint{margin:0}.status-message{font-size:clamp(10px,.95vw,13px);font-weight:800}.status-message.success{color:var(--aqua)}.status-message.error{color:var(--danger)}.status-message.hint{color:var(--hint)}
.control-hint{font-size:clamp(7px,.72vw,9px);color:var(--muted)}.control-hint span{display:inline-block;border:1px solid var(--line);border-radius:5px;padding:1px 4px;margin-right:3px;font-weight:900;letter-spacing:1px}
.game-tip{position:absolute;z-index:12;left:50%;bottom:max(14px,env(safe-area-inset-bottom));transform:translate(-50%,10px);max-width:min(88vw,520px);min-height:42px;padding:9px 14px;border-radius:999px;border:1px solid color-mix(in srgb,var(--gold) 42%,var(--line));background:color-mix(in srgb,var(--panel-strong) 94%,transparent);box-shadow:0 16px 44px rgba(35,25,13,.27);display:flex;align-items:center;gap:8px;font-size:11px;font-weight:780;color:var(--ink);opacity:0;pointer-events:none;transition:opacity .24s ease,transform .24s ease}.game-tip>span:first-child{color:var(--gold)}.game-tip.is-visible{opacity:1;transform:translate(-50%,0)}.game-tip.is-fading{opacity:0;transform:translate(-50%,6px)}
.app-dialog{width:min(92vw,650px);max-height:min(88dvh,760px);padding:0;border:0;border-radius:24px;background:transparent;color:var(--ink);overflow:visible}.app-dialog::backdrop{background:rgba(15,16,19,.62);backdrop-filter:blur(7px)}
.dialog-card{max-height:min(88dvh,760px);display:grid;grid-template-rows:auto minmax(0,1fr) auto;background:color-mix(in srgb,var(--panel-strong) 98%,var(--paper-deep));border:1px solid color-mix(in srgb,var(--gold) 28%,var(--line));border-radius:24px;box-shadow:0 34px 90px rgba(0,0,0,.38);overflow:hidden}.dialog-header{display:flex;align-items:center;justify-content:space-between;padding:18px 20px 13px;border-bottom:1px solid var(--line)}.dialog-header>div{display:grid;gap:2px}.dialog-kicker{font-size:8px;letter-spacing:.16em;text-transform:uppercase;color:var(--aqua);font-weight:900}.dialog-header h2{margin:0;font-size:clamp(23px,4vw,34px);letter-spacing:-.045em}.dialog-close{width:44px;height:44px;border-radius:13px;border:1px solid var(--line);background:var(--panel-soft);font-size:25px;cursor:pointer}.dialog-content{padding:17px 20px;overflow:auto;color:var(--muted);line-height:1.5;font-size:13px}.dialog-content h3{color:var(--ink);font-size:12px;margin:17px 0 6px}.dialog-content p{margin:0 0 11px}.dialog-actions{display:flex;justify-content:flex-end;gap:8px;padding:13px 20px 18px;border-top:1px solid var(--line)}.dialog-actions button{min-width:108px;min-height:44px;border-radius:12px;border:1px solid var(--line);background:var(--panel-soft);font-size:11px;font-weight:900;cursor:pointer;padding:0 14px}.dialog-actions button.primary{background:var(--aqua);color:#fff;border-color:transparent}.dialog-actions button.danger{background:var(--danger-soft);border-color:color-mix(in srgb,var(--danger) 55%,transparent);color:var(--danger)}
.help-lead{font-size:14px;color:var(--ink)}.rule-cards{display:grid;gap:7px;margin:12px 0}.rule-card{display:grid;grid-template-columns:38px 1fr;gap:9px;align-items:center;border:1px solid var(--line);background:var(--panel-soft);border-radius:13px;padding:9px}.rule-card>b{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;background:var(--aqua-soft);color:var(--aqua);font-size:16px}.rule-card>div{display:grid;gap:1px}.rule-card strong{color:var(--ink);font-size:11px}.rule-card span{font-size:10px}
.tutorial-presentation-wrap{margin:12px 0;border:1px solid color-mix(in srgb,var(--aqua) 30%,var(--line));border-radius:16px;background:color-mix(in srgb,var(--panel-soft) 86%,var(--paper));overflow:hidden}.tutorial-presentation-mount{min-height:190px;display:grid;place-items:center;padding:12px}.tutorial-visual-fallback{padding:0 12px 10px!important;margin:0!important;font-size:9px!important;text-align:center;color:var(--muted)}.tutorial-auto-show{display:flex;align-items:center;gap:8px;min-height:44px;margin-top:10px;color:var(--ink);font-size:11px;font-weight:800}.tutorial-auto-show input{width:20px;height:20px;accent-color:var(--aqua)}
.lumen-presentation-stage{position:relative;overflow:hidden;width:min(100%,520px);display:grid;gap:10px;padding:13px;border:1px solid color-mix(in srgb,var(--gold) 32%,var(--line));border-radius:15px;background:color-mix(in srgb,var(--panel-strong) 96%,var(--paper-deep));color:var(--ink);box-shadow:0 14px 34px rgba(31,24,13,.12)}.lumen-presentation-header{display:flex;align-items:flex-end;justify-content:space-between;gap:12px}.lumen-presentation-header>span{font-size:8px;font-weight:900;letter-spacing:.13em;text-transform:uppercase;color:var(--aqua)}.lumen-presentation-header>strong{font-size:12px;text-align:right}.lumen-presentation-body{display:grid;grid-template-columns:minmax(126px,178px) minmax(100px,1fr);gap:14px;align-items:center}.lumen-presentation-box{aspect-ratio:1;display:grid;grid-template-columns:repeat(3,1fr);border:2px solid var(--ink);background:var(--ink);gap:1px}.lumen-presentation-cell{position:relative;display:grid;place-items:center;background:var(--cell-bg);font-size:clamp(17px,4vw,27px);font-weight:850;color:var(--ink);transition:background .28s ease,transform .28s ease,box-shadow .28s ease}.lumen-presentation-cell.is-path::after{content:"★";position:absolute;right:3px;top:1px;color:var(--gold);font-size:7px}.lumen-presentation-cell.is-target{background:color-mix(in srgb,var(--aqua) 13%,var(--cell-bg));box-shadow:inset 0 0 0 3px color-mix(in srgb,var(--aqua) 48%,transparent)}.lumen-presentation-cue{display:grid;align-content:center;justify-items:center;gap:5px;min-height:94px;padding:10px;border:1px solid var(--line);border-radius:14px;background:var(--panel-soft);text-align:center}.lumen-presentation-cue span{font-size:8px;font-weight:850;text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}.lumen-presentation-digit{display:grid;place-items:center;width:54px;height:54px;border-radius:16px;background:var(--aqua-soft);color:var(--aqua);font-size:29px;transform:scale(.78);opacity:.38;transition:transform .32s ease,opacity .32s ease,background .32s ease}.lumen-presentation-motion-token{position:absolute;z-index:8;display:grid;place-items:center;width:46px;height:46px;border-radius:14px;background:var(--aqua);color:#fff;font-size:26px;font-weight:900;box-shadow:0 10px 26px color-mix(in srgb,var(--aqua) 32%,transparent);will-change:transform;pointer-events:none}.lumen-presentation-motion-token[hidden]{display:none}.lumen-presentation-status{min-height:28px!important;margin:0!important;font-size:10px!important;text-align:center;color:var(--muted)!important}.lumen-presentation-checks{display:flex;flex-wrap:wrap;justify-content:center;gap:5px}.lumen-presentation-checks span{border:1px solid var(--line);border-radius:999px;padding:4px 7px;font-size:7px;font-weight:900;color:var(--muted);transition:background .25s ease,color .25s ease,border-color .25s ease}.lumen-presentation-stage[data-phase="focus"] .is-target{transform:scale(1.04);box-shadow:inset 0 0 0 3px var(--aqua),0 0 0 4px color-mix(in srgb,var(--aqua) 15%,transparent)}.lumen-presentation-stage[data-phase="candidate"] .lumen-presentation-digit,.lumen-presentation-stage[data-phase="place"] .lumen-presentation-digit,.lumen-presentation-stage[data-phase="verify"] .lumen-presentation-digit{transform:scale(1);opacity:1}.lumen-presentation-cell.is-placed{background:color-mix(in srgb,var(--aqua) 22%,var(--cell-bg));color:var(--aqua)}.lumen-presentation-cell.is-peer-proof{box-shadow:inset 0 0 0 3px var(--gold)}.lumen-presentation-checks span.is-valid{background:var(--aqua-soft);border-color:color-mix(in srgb,var(--aqua) 52%,var(--line));color:var(--aqua)}
.lumen-presentation-preview{position:fixed;z-index:10000;inset:0;width:100vw;height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 20% 0,color-mix(in srgb,var(--aqua) 13%,var(--paper)) 0,var(--paper) 54%,var(--paper-deep) 100%);overflow:hidden}.lumen-presentation-preview .lumen-presentation-stage{width:min(100%,590px);height:100%;grid-template-rows:auto minmax(0,1fr) auto auto;gap:7px;padding:14px 20px;border-radius:22px;box-shadow:0 22px 55px rgba(31,24,13,.18)}.lumen-presentation-preview .lumen-presentation-header>span{font-size:9px}.lumen-presentation-preview .lumen-presentation-header>strong{font-size:18px;letter-spacing:-.025em}.lumen-presentation-preview .lumen-presentation-body{grid-template-columns:165px 1fr;justify-content:center;gap:24px}.lumen-presentation-preview .lumen-presentation-cue{min-height:108px}.lumen-presentation-preview .lumen-presentation-digit{width:64px;height:64px;font-size:34px}.lumen-presentation-preview .lumen-presentation-status{min-height:18px!important;font-size:11px!important}.lumen-presentation-preview .lumen-presentation-checks span{font-size:8px;padding:4px 8px}.lumen-presentation-stage[data-reduced-motion="true"] *{transition:none!important;animation:none!important}
.stats-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;margin-bottom:13px}.stat-card{border:1px solid var(--line);background:var(--panel-soft);border-radius:13px;padding:11px;text-align:center;display:grid;gap:3px}.stat-card strong{color:var(--ink);font-size:19px}.stat-card span{font-size:8px;text-transform:uppercase;letter-spacing:.08em}.record-table{display:grid;border:1px solid var(--line);border-radius:13px;overflow:hidden}.record-table>div{display:grid;grid-template-columns:1fr .8fr .8fr;gap:7px;padding:9px 11px;align-items:center}.record-table>div+div{border-top:1px solid var(--line)}.record-table strong{color:var(--ink);font-size:11px}.record-table span{font-size:9px;text-align:right}
.setting-row{min-height:58px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid var(--line)}.setting-row>span:first-child{display:grid;gap:2px}.setting-row strong{color:var(--ink);font-size:11px}.setting-row small{font-size:9px}.setting-row select{min-width:140px;min-height:44px;border-radius:11px;border:1px solid var(--line);background:var(--panel-soft);color:var(--ink);padding:0 9px}#highlightSetting{border-color:color-mix(in srgb,var(--highlight-ring) 58%,var(--line));box-shadow:inset 4px 0 0 var(--highlight-ring)}.toggle-control{position:relative;width:48px;height:28px;flex:none}.toggle-control input{position:absolute;opacity:0;inset:0}.toggle-control i{position:absolute;inset:0;border-radius:999px;background:color-mix(in srgb,var(--muted) 24%,transparent);border:1px solid var(--line);transition:.2s}.toggle-control i::after{content:"";position:absolute;width:20px;height:20px;left:3px;top:3px;border-radius:50%;background:var(--ink);transition:.2s}.toggle-control input:checked+i{background:var(--aqua)}.toggle-control input:checked+i::after{transform:translateX(20px);background:#fff}.toggle-control input:focus-visible+i{outline:3px solid var(--gold);outline-offset:3px}.audio-status{margin:10px 0 0;color:var(--muted);font-size:11px;line-height:1.4}
.summary{text-align:center}.summary-mark{width:70px;height:70px;margin:0 auto 9px;border-radius:20px;display:grid;place-items:center;font-size:34px;color:var(--gold);background:color-mix(in srgb,var(--gold) 12%,transparent);border:1px solid color-mix(in srgb,var(--gold) 38%,transparent);box-shadow:0 0 32px color-mix(in srgb,var(--gold) 16%,transparent)}.summary>p{max-width:35em;margin:0 auto 11px}.summary-grid{margin:12px 0}.hint-card{border:1px solid color-mix(in srgb,var(--hint) 45%,var(--line));background:var(--hint-soft);border-radius:14px;padding:13px;color:var(--ink);display:grid;gap:5px}.hint-card strong{color:var(--hint)}.confirm-panel{text-align:center}.confirm-symbol{font-size:36px;color:var(--gold);margin-bottom:7px}
html[data-motion-profile="instant"] *{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}
html[data-motion-profile="instant"] .sudoku-cell.hint-pulse{animation:none;box-shadow:inset 0 0 0 3px var(--hint)}
html[data-motion-profile="instant"] .game-tip{transition:none}
@media(max-width:900px){.game-layout{grid-template-columns:minmax(225px,285px) minmax(0,1fr);gap:8px}.command-panel{padding:12px}.intro-copy h1{font-size:30px}.intro-copy p{font-size:10px}.board-panel{padding:8px}.board-shell{width:min(100%,calc(var(--app-height) - 175px),620px)}}
@media(max-width:820px){
  .app{gap:0}.topbar{min-height:44px}.brand-mark{width:38px;height:38px}.brand-kicker{display:none}.brand-lockup strong{font-size:20px}.help-button{grid-template-columns:1fr;padding:0}.help-button strong{display:none}.header-actions{gap:3px}.icon-button{min-width:42px;height:42px;border-radius:11px}
  .game-layout{grid-template-columns:1fr;grid-template-rows:auto minmax(0,1fr);gap:5px}
  .command-panel{border-radius:16px;padding:5px 6px;display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-areas:"difficulty hud" "record actions";gap:4px;overflow:visible}.intro-copy{display:none}.difficulty-picker{grid-area:difficulty;grid-template-columns:repeat(4,minmax(0,1fr));gap:3px}.difficulty-picker button{min-height:42px;padding:3px;text-align:center;border-radius:9px;place-content:center}.difficulty-picker strong{font-size:8px}.difficulty-picker small{display:none}.hud-grid{grid-area:hud;grid-template-columns:repeat(4,40px);gap:2px}.hud-card{padding:4px 2px;border-radius:8px}.hud-card span{font-size:5px}.hud-card strong{font-size:10px}.puzzle-record{grid-area:record;border-radius:8px;grid-template-columns:repeat(3,minmax(0,1fr))}.puzzle-record>div{padding:3px 5px}.puzzle-record span{font-size:5px}.puzzle-record strong{font-size:7px}.side-actions{grid-area:actions;margin:0;grid-template-columns:repeat(4,42px);gap:2px}.action-button{min-height:42px;height:42px;padding:0;border-radius:9px;display:grid;place-items:center;text-align:center}.action-button>span{grid-row:auto;font-size:16px}.action-button strong,.action-button small{display:none}
  .board-panel{border-radius:17px;padding:5px;grid-template-rows:auto auto 25px;align-content:center;gap:2px}.feedback-zone{gap:0}.board-shell{width:min(calc(100% - 8px),calc(var(--app-height) - 238px));max-width:100%;border-radius:13px;padding:5px}.sudoku-cell{font-size:clamp(15px,7vw,25px)}.note-grid{font-size:clamp(5px,2vw,8px);inset:1px}.number-pad{grid-template-columns:repeat(5,minmax(44px,1fr));gap:3px;width:min(100%,310px)}.number-pad button{height:41px;border-radius:9px;font-size:16px}.feedback-zone{min-height:23px}.status-message{font-size:8px}.control-hint{display:none}.game-tip{font-size:9px;min-height:38px;padding:7px 11px}
}
@media(max-width:380px){
  :root{--app-pad:max(6px,env(safe-area-inset-top)) max(6px,env(safe-area-inset-right)) max(6px,env(safe-area-inset-bottom)) max(6px,env(safe-area-inset-left))}.app{gap:2px}.brand-lockup{gap:0}.brand-lockup>div{display:none}.brand-mark{width:38px;height:38px}.header-actions{gap:2px}.icon-button{min-width:40px;height:40px}.command-panel{grid-template-columns:1fr;grid-template-areas:"difficulty" "hud" "actions";padding:4px}.hud-grid{grid-template-columns:repeat(4,minmax(0,1fr));width:100%}.puzzle-record{display:none}.side-actions{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));width:100%}.action-button{min-height:36px;height:36px}.difficulty-picker button{min-height:36px}.board-panel{grid-template-rows:auto auto 22px;gap:2px}.board-shell{width:min(calc(100% - 16px),calc(var(--app-height) - 250px));padding:4px}.number-pad{grid-template-columns:repeat(5,minmax(42px,1fr));width:min(100%,284px);gap:2px}.number-pad button{height:36px}.status-message{font-size:7px}
}
@media(max-height:700px) and (min-width:721px){
  .app{gap:6px}.topbar{min-height:43px}.brand-mark{width:38px;height:38px}.game-layout{grid-template-columns:minmax(245px,315px) minmax(0,1fr);gap:8px}.command-panel{padding:10px 12px;gap:6px;border-radius:18px}.intro-copy{gap:4px}.intro-copy h1{font-size:28px}.intro-copy p{font-size:9px;line-height:1.3}.difficulty-picker button{min-height:40px;padding:4px 7px}.hud-card{padding:5px 3px}.puzzle-record>div{padding:5px 7px}.action-button{min-height:42px}.board-panel{border-radius:20px;padding:7px;grid-template-rows:minmax(0,1fr) 42px 28px}.board-shell{width:min(100%,calc(var(--app-height) - 160px),560px);padding:7px}.number-pad button{height:40px}.feedback-zone{min-height:26px}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}

.mode-picker{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}
.mode-picker button{min-width:0;min-height:46px;border:1px solid var(--line);border-radius:13px;background:var(--panel-soft);padding:7px 9px;text-align:left;cursor:pointer;display:grid;gap:1px;transition:transform .16s ease,border-color .16s ease,background .16s ease}
.mode-picker button:hover{transform:translateY(-1px);border-color:color-mix(in srgb,var(--gold) 55%,var(--line))}
.mode-picker button[aria-pressed="true"]{border-color:var(--gold);background:color-mix(in srgb,var(--gold) 13%,var(--panel-soft));box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--gold) 18%,transparent)}
.mode-picker strong{font-size:11px}.mode-picker small{font-size:8px;color:var(--muted)}
.mode-objective{margin:0;padding:7px 9px;border:1px solid color-mix(in srgb,var(--gold) 25%,var(--line));border-radius:11px;background:color-mix(in srgb,var(--gold) 7%,transparent);color:var(--muted);font-size:9px;line-height:1.35;font-weight:720}
.crazy-rule-cue{position:relative;z-index:1;justify-self:center;max-width:100%;min-height:13px;margin:0;padding:1px 7px;border:1px solid color-mix(in srgb,var(--hint) 48%,var(--line));border-radius:999px;background:color-mix(in srgb,var(--panel-strong) 88%,var(--hint-soft));color:var(--ink);display:flex;align-items:center;justify-content:center;gap:4px;font-size:8px;font-weight:850;line-height:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;pointer-events:none}.crazy-rule-cue>span:first-child{color:var(--gold);font-size:9px}.crazy-rule-cue>span:last-child{overflow:hidden;text-overflow:ellipsis}
.constellation-overlay{position:absolute;z-index:10;inset:var(--board-inset);width:calc(100% - var(--board-inset) * 2);height:calc(100% - var(--board-inset) * 2);overflow:visible;pointer-events:none;color:var(--hint)}
.constellation-overlay polyline{fill:none;stroke:currentColor;stroke-width:3px;stroke-linecap:round;stroke-linejoin:round;vector-effect:non-scaling-stroke;opacity:.52}
.constellation-overlay circle{fill:color-mix(in srgb,var(--hint) 34%,var(--panel-strong));stroke:currentColor;stroke-width:2px;vector-effect:non-scaling-stroke;opacity:.94}
.constellation-overlay .constellation-tip{fill:var(--gold);stroke:color-mix(in srgb,var(--gold-strong) 75%,var(--ink))}.constellation-overlay.has-active-path polyline:not(.is-active),.constellation-overlay.has-active-path circle:not(.is-active){opacity:.16}.constellation-overlay .is-active{opacity:1;filter:drop-shadow(0 0 3px color-mix(in srgb,var(--hint) 68%,transparent))}.constellation-overlay polyline.is-active{stroke-width:4px}
.sudoku-board{position:relative;z-index:auto}
.sudoku-cell .cell-value,.sudoku-cell .note-grid{position:relative;z-index:11}
html[data-mode="crazy"] .sudoku-cell{background:color-mix(in srgb,var(--cell-bg) 84%,transparent)}
html[data-mode="crazy"] .sudoku-cell.given{background:color-mix(in srgb,var(--given-bg) 86%,transparent)}
html[data-mode="crazy"] .sudoku-cell.peer{background:color-mix(in srgb,var(--peer-bg) 94%,transparent)}
html[data-mode="crazy"] .sudoku-cell.match{background:color-mix(in srgb,var(--match-bg) 86%,transparent)}
html[data-mode="crazy"] .sudoku-cell.selected{background:color-mix(in srgb,var(--selected-bg) 92%,transparent)}
html[data-mode="crazy"] .sudoku-cell.constellation-active-cell:not(.selected){z-index:11;box-shadow:inset 0 0 0 2px color-mix(in srgb,var(--hint) 72%,transparent);background:color-mix(in srgb,var(--hint-soft) 48%,var(--cell-bg))}
html[data-mode="crazy"] .sudoku-cell.constellation-active-cell.given:not(.selected){background:color-mix(in srgb,var(--hint-soft) 38%,var(--given-bg))}

@media(max-width:820px){
  .command-panel{grid-template-columns:auto minmax(0,1fr);grid-template-areas:"mode difficulty" "record hud" "actions actions"}
  .mode-picker{grid-area:mode;grid-template-columns:repeat(2,60px);gap:3px}.mode-picker button{min-height:42px;padding:3px 5px;border-radius:9px;place-content:center;text-align:center}.mode-picker strong{font-size:8px}.mode-picker small{font-size:6px}
  .mode-objective{display:none}.crazy-rule-cue{min-height:8px;padding:0 5px;border-width:0;background:transparent;font-size:7px}.crazy-rule-cue>span:first-child{font-size:8px}
  .side-actions{justify-self:end}
  .board-shell{--board-inset:5px}
}
@media(max-width:380px){
  .command-panel{grid-template-columns:minmax(96px,auto) minmax(0,1fr);grid-template-areas:"mode difficulty" "hud hud" "actions actions"}
  .mode-picker{width:100%;grid-template-columns:repeat(2,minmax(46px,1fr))}.mode-picker button{min-height:36px;padding:2px}
  .board-shell{--board-inset:4px}
}
@media(max-height:700px) and (min-width:721px){.board-shell{--board-inset:7px}}
@media(max-width:500px){
  .command-panel{grid-template-columns:100px minmax(0,1fr);grid-template-areas:"mode difficulty" "hud hud" "actions actions"}
  .puzzle-record{display:none}
  .mode-picker{width:100%;grid-template-columns:repeat(2,minmax(46px,1fr));gap:3px}.mode-picker button{min-height:36px;padding:2px}
  .difficulty-picker{min-width:0}
  .side-actions{width:100%;justify-self:stretch;grid-template-columns:repeat(4,minmax(42px,1fr))}
  .dialog-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;padding:10px 14px 14px}
  .dialog-actions button{min-width:0;width:100%;padding:0 8px}
  .dialog-actions button.primary{grid-column:1/-1}
}

/* $game-standard v1: keep player-facing text readable instead of shrinking it to
   preserve a literal one-screen composition. Secondary metadata may disappear on
   short phones; rules, status, controls, help, and results stay readable. */
.brand-kicker{font-size:12px}
.help-button strong{font-size:14px}
.eyebrow{font-size:12px}
.intro-copy p{font-size:clamp(14px,1.05vw,16px)}
.mode-picker strong,.difficulty-picker strong{font-size:14px}
.mode-picker small,.difficulty-picker small{font-size:12px}
.mode-objective{font-size:14px;line-height:1.45}
.hud-card span,.puzzle-record span{font-size:12px}
.hud-card strong{font-size:clamp(16px,1.5vw,20px)}
.puzzle-record strong{font-size:14px}
.action-button strong{font-size:14px}
.action-button small{font-size:12px}
.clear-key small{font-size:12px}
.status-message{font-size:16px;line-height:1.25}
.control-hint{font-size:14px;line-height:1.3}
.game-tip{min-height:44px;font-size:14px;line-height:1.35}
.dialog-kicker{font-size:12px}
.dialog-content{font-size:16px}
.dialog-content h3{font-size:16px}
.dialog-actions button{min-height:44px;font-size:14px}
.rule-card strong{font-size:16px}.rule-card span{font-size:14px;line-height:1.4}
.tutorial-visual-fallback{font-size:14px!important;line-height:1.4}
.tutorial-auto-show{font-size:14px}
.lumen-presentation-header>span{font-size:12px}.lumen-presentation-header>strong{font-size:14px}
.lumen-presentation-cue span{font-size:12px}
.lumen-presentation-status{font-size:14px!important;line-height:1.35}
.lumen-presentation-checks span{font-size:12px}
.stat-card span{font-size:12px}.record-table strong{font-size:14px}.record-table span{font-size:14px}
.setting-row strong{font-size:14px}.setting-row small{font-size:14px;line-height:1.4}
.audio-status{font-size:14px}
.crazy-rule-cue{min-height:24px;padding:3px 9px;font-size:14px;line-height:1.2}
.crazy-rule-cue>span:first-child{font-size:14px}

@media(max-width:820px){
  .icon-button{min-width:44px;height:44px}
  .mode-picker button,.difficulty-picker button,.action-button,.number-pad button{min-height:44px;height:44px}
  .side-actions{grid-template-columns:repeat(4,minmax(44px,1fr));min-width:182px}
  .mode-picker strong,.difficulty-picker strong{font-size:14px;line-height:1.05;overflow-wrap:anywhere}
  .mode-picker small,.difficulty-picker small{display:none}
  .hud-card span,.puzzle-record span{font-size:12px}
  .hud-card strong,.puzzle-record strong{font-size:14px}
  .status-message{font-size:14px}
  .game-tip{min-height:44px;font-size:14px}
  .crazy-rule-cue{min-height:20px;font-size:14px}
  .board-shell{width:min(calc(100% - 8px),calc(var(--app-height) - 320px),620px)}
}
@media(max-width:500px){
  .command-panel{grid-template-columns:minmax(104px,.36fr) minmax(0,.64fr);grid-template-areas:"mode difficulty" "actions actions";gap:4px}
  .hud-grid,.puzzle-record{display:none}
  .mode-picker{width:100%;grid-template-columns:repeat(2,minmax(0,1fr))}
  .mode-picker button,.difficulty-picker button,.action-button,.number-pad button{min-height:44px;height:44px}
  .side-actions{width:100%;grid-template-columns:repeat(4,minmax(44px,1fr))}
  .board-shell{width:min(calc(100% - 12px),calc(var(--app-height) - 288px))}
}
@media(max-width:500px) and (max-height:600px){.board-shell{width:min(calc(100% - 12px),calc(var(--app-height) - 304px))}}
@media(max-width:380px){
  .icon-button{min-width:44px;height:44px}
  .command-panel{grid-template-columns:minmax(104px,.36fr) minmax(0,.64fr);grid-template-areas:"mode difficulty" "actions actions"}
  .action-button,.difficulty-picker button,.mode-picker button,.number-pad button{min-height:44px;height:44px}
  .status-message{font-size:14px}
}
@media(max-height:700px) and (min-width:721px){
  .intro-copy p{font-size:14px;line-height:1.4}
  .difficulty-picker button,.mode-picker button,.action-button{min-height:44px}
  .number-pad button{height:44px}
}

/* True fullscreen uses the portal-owned display-mode contract. The square board
   remains square while surrounding controls recompose into the extra width. */
html[data-webgames-display-mode="fullscreen"],html[data-webgames-display-mode="fullscreen"] body{width:100%;height:100%;min-height:100%;overflow:hidden}
html[data-webgames-display-mode="fullscreen"] .app{width:100%;max-width:none;height:100%;margin:0}
html[data-webgames-display-mode="fullscreen"] .game-layout{width:100%;max-width:none;height:100%;margin:0;align-self:stretch}
@media(min-width:1100px) and (min-height:700px){
  html[data-webgames-display-mode="fullscreen"] .game-layout{grid-template-columns:minmax(320px,390px) minmax(0,1fr)}
  html[data-webgames-display-mode="fullscreen"] .board-panel{grid-template-columns:minmax(0,1fr) minmax(190px,260px);grid-template-rows:minmax(0,1fr) auto;column-gap:clamp(12px,1.6vw,24px);row-gap:10px;align-items:center}
  html[data-webgames-display-mode="fullscreen"] .board-shell{grid-column:1;grid-row:1/3;width:min(100%,calc(100dvh - 92px),820px);max-width:none}
  html[data-webgames-display-mode="fullscreen"] .number-pad{grid-column:2;grid-row:1;align-self:center;justify-self:stretch;width:100%;grid-template-columns:repeat(2,minmax(72px,1fr));gap:7px}
  html[data-webgames-display-mode="fullscreen"] .number-pad button{height:52px;font-size:22px}
  html[data-webgames-display-mode="fullscreen"] .feedback-zone{grid-column:2;grid-row:2;align-self:end;min-height:72px;text-align:left}
  html[data-webgames-display-mode="fullscreen"] .crazy-rule-cue{justify-self:start;white-space:normal;text-align:left}
}