:root{color:#1b241f;font-synthesis:none;text-rendering:optimizelegibility;--ink:#1b241f;--muted:#697168;--paper:#fbf8e8;--panel:#fffdf1;--line:#9da78f;--heavy:#26372d;--accent:#d95f32;--accent-2:#31786f;--danger:#c73d35;--target:#ffd166;--shadow:0 22px 70px #2e36252e;background:#eef0df;font-family:Avenir Next,Yu Gothic,Hiragino Sans,sans-serif}*{box-sizing:border-box}body{background:radial-gradient(circle at 10% 10%,#d95f322e,#0000 26rem),linear-gradient(135deg,#f8efd2 0%,#e2ecd9 48%,#d7e2d1 100%);min-width:320px;min-height:100vh;margin:0}button,textarea{font:inherit}button{cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent;border:0}button:disabled{cursor:not-allowed;opacity:.45}.app-shell{width:min(1120px,100%);margin:0 auto;padding:28px clamp(14px,3vw,34px) 34px}.hero{justify-content:space-between;align-items:flex-end;gap:18px;margin-bottom:22px;display:flex}.eyebrow{color:var(--accent-2);letter-spacing:.14em;text-transform:uppercase;margin:0 0 7px;font-size:.78rem;font-weight:800}h1{letter-spacing:-.07em;max-width:760px;margin:0;font-size:clamp(1.85rem,5vw,4.8rem);line-height:.96}.mode-pill{border:2px solid var(--heavy);background:var(--paper);box-shadow:5px 5px 0 var(--heavy);border-radius:999px;flex:none;padding:10px 14px;font-weight:800}.workspace{grid-template-columns:minmax(300px,640px) minmax(260px,360px);align-items:start;gap:clamp(16px,4vw,34px);display:grid}.board-stack{gap:14px;width:min(100%,640px);display:grid}.board{touch-action:manipulation;aspect-ratio:1;background:var(--heavy);width:min(100%,640px);box-shadow:var(--shadow);border:0;border-radius:0;grid-template-rows:repeat(9,1fr);grid-template-columns:repeat(9,1fr);display:grid;overflow:hidden}.cell{border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-width:0;min-height:0;color:var(--ink);background:#fffdf1f5;place-items:center;padding:0;transition:background .12s,transform .12s;display:grid;position:relative;overflow:hidden}.cell.top-block{border-top:3px solid var(--heavy)}.cell.left-block{border-left:3px solid var(--heavy)}.cell.right-edge{border-right:3px solid var(--heavy)}.cell.bottom-edge{border-bottom:3px solid var(--heavy)}.cell.same-block{background:#e8f2ff}.cell.same-row,.cell.same-col{background:#d8e9ff}.cell.same-block.same-row,.cell.same-block.same-col{background:#c8ddf8}.cell.same-row.same-col{background:#b7d2f2}.cell.selected{z-index:1;outline:4px solid var(--accent);outline-offset:-4px;background:#fff0b8}.cell.fixed{background:#e4ead7}.cell.fixed.same-block{background:#dbe7f5}.cell.fixed.same-row,.cell.fixed.same-col{background:#c5d8ee}.cell.violation{color:var(--danger);background:#ffe0dd}.cell.hint-unit-cell{background:#e7f4ff}.cell.hint-pattern-cell{background:#c7e4ff;box-shadow:inset 0 0 0 3px #236a9f}.cell.hint-elimination-cell{background:#fff0b7;box-shadow:inset 0 0 0 3px #d95f32}.cell.hint-pattern-cell.hint-elimination-cell{background:#ffe29a;box-shadow:inset 0 0 0 3px #236a9f,inset 0 0 0 6px #d95f32}.cell.selected.hint-pattern-cell,.cell.selected.hint-elimination-cell{outline-color:var(--accent)}.value{font-size:clamp(1.35rem,min(7vw,7vh),3.35rem);font-weight:900;line-height:1}.fixed .value{color:var(--heavy)}.candidates{color:#596457;font-variant-numeric:tabular-nums;grid-template-rows:repeat(3,1fr);grid-template-columns:repeat(3,1fr);width:86%;height:86%;font-size:clamp(.55rem,2.2vw,1.05rem);font-weight:800;line-height:1;display:grid}.candidates span{opacity:0;border-radius:5px;place-items:center;min-width:0;min-height:0;display:grid}.candidates span.visible{opacity:1}.candidates span.focused{background:var(--accent-2);color:#fff}.candidates span.dimmed{color:#6f7b70;opacity:.38}.candidates span.conflict{color:#4d3300;opacity:1;background:#ffd866;box-shadow:inset 0 0 0 1px #b98100}.candidates span.removal{background:var(--target);color:#5c3a00;opacity:1;box-shadow:inset 0 0 0 2px #d95f32}.candidates span.hint-pattern{color:#fff;opacity:1;background:#2f746d}.candidates span.hint-elimination{color:#4b2a00;opacity:1;box-shadow:inset 0 0 0 2px var(--danger);background:#f8bf3c}.panel,.paste-card,.message{border:2px solid var(--heavy);background:#fffdf1db;border-radius:24px;box-shadow:8px 8px #26372de6}.panel{gap:14px;padding:16px;display:grid}.status-card{background:var(--heavy);color:#fff;border-radius:18px;gap:4px;padding:15px;display:grid}.status-card span,.status-card small{color:#ffffffbd}.status-card strong{font-size:1.7rem}.segmented,.actions{gap:8px;display:grid}.segmented{grid-template-columns:repeat(3,1fr)}.segmented button,.actions button,.numpad button,.paste-card button{border:2px solid var(--heavy);background:var(--panel);min-height:44px;color:var(--ink);box-shadow:3px 3px 0 var(--heavy);border-radius:14px;font-weight:850}.segmented button.active,.numpad button.active{background:var(--accent-2);color:#fff}.numpad{grid-template-columns:repeat(3,1fr);gap:9px;display:grid}.numpad button{background:#fff7cf;min-height:58px;font-size:1.28rem}.numpad button.active{background:var(--accent-2)}.numpad .wide{background:#f3dbc9;grid-column:1/-1}.actions{grid-template-columns:repeat(2,1fr)}.actions .wide-action{grid-column:1/-1}.hint-card{border:2px solid var(--heavy);background:#f7f2dc;border-radius:18px;gap:10px;padding:12px;display:grid}.shortcut-card{color:var(--muted);background:#e8f2ffb8;border:2px dashed #26372d73;border-radius:16px;gap:5px;padding:11px 12px;font-size:.78rem;line-height:1.45;display:grid}.shortcut-card span{color:var(--accent-2);letter-spacing:.08em;text-transform:uppercase;font-weight:950}.shortcut-card p{margin:0}kbd{min-width:1.45em;min-height:1.45em;color:var(--ink);font:inherit;background:#fffdf1;border:1px solid #26372d80;border-radius:5px;place-items:center;padding:0 .28em;font-weight:900;display:inline-grid}.hint-levels{grid-template-columns:repeat(5,1fr);gap:6px;display:grid}.hint-levels button{border:2px solid var(--heavy);background:var(--panel);min-height:36px;color:var(--ink);box-shadow:2px 2px 0 var(--heavy);border-radius:12px;font-weight:900}.hint-levels button.active{background:var(--accent);color:#fff}.hint-details{color:var(--ink);gap:9px;display:grid}.hint-details p,.hint-details ul{margin:3px 0 0}.hint-details strong{font-size:1.2rem}.hint-title-row{justify-content:space-between;align-items:center;gap:8px;display:flex}.hint-title-row button{border:2px solid var(--heavy);background:var(--panel);min-height:32px;color:var(--ink);box-shadow:2px 2px 0 var(--heavy);border-radius:999px;font-size:.78rem;font-weight:900}.hint-details span,.hint-kicker{color:var(--muted);letter-spacing:.08em;font-size:.75rem;font-weight:900}.hint-details ul{gap:3px;max-height:7rem;padding-left:1.1rem;display:grid;overflow:auto}.dictionary-card{border:2px solid var(--heavy);background:#fffdf1e6;border-radius:24px;gap:16px;margin-top:22px;padding:18px;display:grid;box-shadow:8px 8px #26372de6}.ad-card{background:#fffdf185;border:1px dashed #26372d47;border-radius:18px;gap:8px;width:100%;min-width:0;min-height:96px;margin-top:22px;padding:10px;display:grid;overflow:hidden}.ad-card span{color:var(--muted);letter-spacing:.08em;text-transform:uppercase;font-size:.62rem;font-weight:850}.ad-card ins{width:100%}.dictionary-head{justify-content:space-between;align-items:end;gap:12px;display:flex}.dictionary-head h2{letter-spacing:-.05em;margin:0;font-size:clamp(1.6rem,4vw,2.8rem);line-height:.95}.dictionary-head>span{color:var(--muted);flex:none;font-size:.8rem;font-weight:900}.dictionary-layout{grid-template-columns:minmax(190px,260px) 1fr;gap:16px;display:grid}.dictionary-list{align-content:start;gap:7px;max-height:32rem;padding-right:4px;display:grid;overflow:auto}.dictionary-list button{border:2px solid var(--heavy);min-height:38px;color:var(--ink);text-align:left;box-shadow:2px 2px 0 var(--heavy);background:#f8f1d3;border-radius:12px;font-size:.88rem;font-weight:900}.dictionary-list button.active{background:var(--accent-2);color:#fff}.dictionary-entry{border:2px solid var(--heavy);background:#fffaf0;border-radius:18px;gap:14px;min-width:0;padding:18px;display:grid}.dictionary-entry h3{letter-spacing:-.04em;margin:0;font-size:clamp(1.35rem,3vw,2rem)}.dictionary-entry div{gap:4px;display:grid}.dictionary-entry span{color:var(--accent-2);letter-spacing:.08em;font-size:.78rem;font-weight:950}.dictionary-entry p{margin:0;line-height:1.65}.paste-card{gap:10px;margin-top:22px;padding:16px;display:grid}.paste-card label{font-weight:900}textarea{resize:vertical;border:2px solid var(--heavy);width:100%;color:var(--ink);background:#fffdf6;border-radius:14px;padding:12px;line-height:1.35}.message{color:var(--ink);margin:18px 0 0;padding:14px 16px;font-weight:800}.message-desktop{margin:0}.message-mobile{display:none}.site-footer{color:var(--muted);gap:6px;margin-top:22px;padding:14px 4px 0;font-size:.78rem;line-height:1.55;display:grid}.site-footer p{margin:0}.site-footer a{color:var(--accent-2);font-weight:900}.site-footer button{border:2px solid var(--heavy);background:var(--panel);min-height:34px;color:var(--ink);box-shadow:2px 2px 0 var(--heavy);border-radius:999px;justify-self:start;margin-top:4px;font-size:.78rem;font-weight:900}@media (width<=860px){.hero{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:14px}.workspace{grid-template-columns:1fr;gap:12px}.board{border-radius:0;width:100%}.board-stack{width:100%}.message-desktop{display:none}.message-mobile{display:block}.panel{border-radius:18px;gap:10px;padding:12px;box-shadow:5px 5px #26372de6}.shortcut-card{display:none}.dictionary-layout{grid-template-columns:1fr}.dictionary-list{max-height:none;padding:0 0 6px;display:flex;overflow-x:auto}.dictionary-list button{white-space:nowrap;flex:none}}@media (width<=520px){.app-shell{padding:14px 8px 24px}h1{letter-spacing:-.055em;font-size:clamp(1.45rem,8vw,2.15rem)}.eyebrow{margin-bottom:4px}.value{font-size:clamp(1.2rem,8vw,1.75rem)}.candidates{font-size:clamp(.48rem,2.6vw,.68rem)}.panel{gap:8px;padding:9px}.status-card{border-radius:12px;grid-template-columns:auto 1fr;align-items:center;padding:8px 10px}.status-card span{font-size:.72rem}.status-card strong{text-align:right;font-size:1rem}.status-card small{display:none}.segmented,.actions{gap:6px}.segmented button,.actions button,.numpad button,.paste-card button{min-height:38px;box-shadow:2px 2px 0 var(--heavy);border-radius:11px;font-size:.86rem}.numpad{gap:6px}.numpad button{min-height:44px;font-size:1.08rem}.numpad .wide{grid-column:1/-1}.actions{grid-template-columns:repeat(2,1fr)}.paste-card,.dictionary-card{border-radius:16px;margin-top:14px;padding:10px}.ad-card{border-radius:14px;min-height:78px;margin-top:14px;padding:8px}.dictionary-head{flex-direction:column;align-items:start;gap:6px}.dictionary-entry{border-radius:14px;padding:12px}.message{border-radius:16px;margin-top:12px;padding:10px 12px;font-size:.88rem}.site-footer{margin-top:16px;font-size:.72rem}.mode-pill{box-shadow:3px 3px 0 var(--heavy);padding:7px 10px;font-size:.78rem}}