@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color 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#432d161f}.brand{align-items:center;gap:12px;min-width:0;text-decoration:none;display:inline-flex}.brand-mark{border:2px solid var(--ink);width:48px;height:48px;box-shadow:5px 5px 0 var(--ink);background:linear-gradient(145deg,#fff4dd,#eeb760);border-radius:16px;place-items:center;display:grid;transform:rotate(-3deg)}.brand-mark svg{fill:none;width:36px;height:36px}.brand-mark rect{fill:#fff9edd1;stroke:var(--ink);stroke-width:3px}.brand-mark path{stroke:var(--ink);stroke-width:3px;stroke-linecap:round}.brand-mark circle{fill:var(--accent);stroke:var(--ink);stroke-width:2px}.brand-copy{gap:0;line-height:.9;display:grid}.brand-copy strong{letter-spacing:-.04em;font-size:18px}.brand-copy em{color:var(--accent-dark);letter-spacing:.16em;text-transform:uppercase;font:800 12px/1 ui-sans-serif,system-ui,sans-serif}.site-header nav,.site-footer nav{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.site-header nav a,.site-footer nav a{color:var(--ink-soft);border-radius:999px;padding:9px 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span{color:var(--ink-soft);text-align:right;text-transform:uppercase;letter-spacing:.08em;font:900 13px/1.2 ui-sans-serif,system-ui,sans-serif}.section-kicker{color:var(--accent-dark);letter-spacing:.16em;text-transform:uppercase;margin:0 0 8px;font:950 12px/1.2 ui-sans-serif,system-ui,sans-serif}.ad-slot{color:#958878;text-align:center;background:#ffffff70;border:1px dashed #b9ad9b;border-radius:22px;place-items:center;min-height:250px;padding:24px;display:grid}.ad-slot--left-rail,.ad-slot--right-rail{writing-mode:vertical-rl;min-height:600px}.ad-slot--bottom{min-height:120px;margin-bottom:28px}.ad-slot span{text-transform:uppercase;letter-spacing:.14em;font:800 12px ui-sans-serif,system-ui,sans-serif;display:block}.game-shell{grid-template-columns:minmax(0,820px) minmax(260px,1fr);align-items:start;gap:clamp(18px,3vw,34px);margin:10px auto 34px;display:grid;position:relative}.game-shell:before{content:"Play area";z-index:3;background:var(--accent);color:var(--paper);border:2px solid var(--ink);box-shadow:3px 3px 0 var(--ink);letter-spacing:.14em;text-transform:uppercase;border-radius:999px;padding:5px 10px;font:950 11px/1 ui-sans-serif,system-ui,sans-serif;position:absolute;top:-14px;left:18px}.game-panel,.status-panel,.content-card{box-shadow:var(--shadow);background:linear-gradient(135deg,#fff9edf2,#f8e8c7e0),linear-gradient(90deg,#392f250a 1px,#0000 1px) 0 0/18px 18px;border:2px solid #392f2524;border-radius:30px;position:relative}.game-panel{min-width:0;padding:clamp(14px,2.4vw,28px);overflow:hidden}.game-panel:before,.content-card:before{content:"";pointer-events:none;border:1px solid #a8784238;border-radius:22px;position:absolute;inset:10px}.game-toolbar{grid-template-columns:minmax(0,1fr) auto auto;align-items:center;gap:16px;margin-bottom:18px;display:grid}.game-toolbar__meta{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:8px;display:flex}.timer-pill{border:2px solid var(--ink);background:var(--gold);text-align:center;min-width:78px;box-shadow:3px 3px 0 var(--ink);border-radius:999px;padding:10px 14px;font:950 14px/1 ui-sans-serif,system-ui,sans-serif}.mini-action,.share-button{border:1px solid var(--line-strong);background:var(--paper);color:var(--ink);cursor:pointer;border-radius:999px;padding:10px 13px;font:900 13px ui-sans-serif,system-ui,sans-serif;transition:transform .15s,background .15s}.mini-action:hover,.share-button:hover{background:#ffe7bd;transform:translateY(-1px)}.game-toolbar h2,.status-panel h3,.content-card h2{letter-spacing:-.045em;margin:0}.micro-hook{color:var(--sage-dark);margin:8px 0 0;font:900 13px/1.35 ui-sans-serif,system-ui,sans-serif}.difficulty-tabs,.control-row{flex-wrap:wrap;gap:8px;display:flex}.difficulty-tabs button,.control-row button,.number-pad button{border:1px solid var(--line-strong);color:var(--ink);cursor:pointer;background:#fff4dc;border-radius:14px;padding:10px 12px;font:900 13px ui-sans-serif,system-ui,sans-serif;transition:transform .13s,background .13s,box-shadow .13s}.difficulty-tabs button:hover,.control-row button:hover,.number-pad button:hover{transform:translateY(-1px)}.difficulty-tabs button.active,.control-row button.active{background:var(--ink);color:var(--paper);border-color:var(--ink);box-shadow:3px 3px 0 var(--gold)}.board-wrap{perspective:900px;place-items:center;padding:clamp(4px,1.4vw,14px) 0 2px;display:grid}.board-shield{width:min(100%,590px);position:relative}.board-shield:before{content:"";z-index:-1;background:#496f5329;border-radius:24px;position:absolute;inset:7% -5% -8% 7%;transform:rotate(-2deg)}.sudoku-board{aspect-ratio:1;border:5px solid var(--grid);background:var(--grid);border-radius:18px;grid-template-columns:repeat(9,1fr);gap:1px;width:100%;display:grid;overflow:hidden;transform:rotateX(1.2deg);box-shadow:10px 12px #211b15e0,0 26px 50px #432d1640}.board-shield.paused 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var(--grid)}.sudoku-cell.given{color:var(--ink);background:var(--cell-given)}.sudoku-cell.related{background:var(--cell-related)}.sudoku-cell.same-value{background:var(--cell-same)}.sudoku-cell.selected{outline:4px solid var(--accent);outline-offset:-4px;z-index:2;background:var(--cell-selected)}.sudoku-cell.mistake{color:var(--warn);background:#ffd6c9}.sudoku-cell small{width:82%;color:var(--muted);white-space:normal;place-items:center;font-size:clamp(8px,2vw,13px);line-height:1.1;display:grid}.number-pad{grid-template-columns:repeat(9,1fr);gap:8px;width:min(100%,640px);margin:22px auto 14px;display:grid}.number-pad button{background:var(--sage);color:#fff;border-color:var(--sage-dark);box-shadow:0 4px 0 var(--sage-dark);padding:14px 0;font-size:18px}.number-pad button:active{box-shadow:0 2px 0 var(--sage-dark);transform:translateY(2px)}.control-row{width:min(100%,640px);margin:0 auto}.control-row 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var(--line-strong);background:var(--paper);color:var(--ink);cursor:pointer;border-radius:999px;flex:1;padding:8px 10px;font:900 12px ui-sans-serif,system-ui,sans-serif}.leaderboard-tabs button.active{background:var(--ink);color:var(--paper);border-color:var(--ink)}.rivalry-line{color:var(--accent-dark);margin:12px 0;font:900 13px/1.35 ui-sans-serif,system-ui,sans-serif}.podium-row{grid-template-columns:repeat(3,minmax(0,1fr));align-items:end;gap:8px;margin:12px 0;display:grid}.podium-card{text-align:center;background:linear-gradient(160deg,#fff9ed,#f4d79e);border:2px solid #392f252e;border-radius:18px;justify-items:center;gap:5px;min-width:0;padding:10px 6px;display:grid;box-shadow:0 10px 20px #432d161f}.podium-card--1{border-color:var(--gold);transform:translateY(-5px);box-shadow:0 12px #d99b3d47,0 18px 28px #432d1626}.podium-card strong{text-overflow:ellipsis;white-space:nowrap;max-width:100%;font:950 12px/1 ui-sans-serif,system-ui,sans-serif;overflow:hidden}.podium-card 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