:root{font-family:Inter,Hiragino Sans,Yu Gothic,YuGothic,Noto Sans JP,system-ui,sans-serif;color:#18211d;background:#f5f7f4;--surface: #ffffff;--surface-muted: #eef2ee;--text: #18211d;--text-muted: #647068;--line: #cbd3cd;--accent: #355f4a;--accent-strong: #244735;--correct: #dff3e6;--incorrect: #fde4df;--block: #27302b;--radius: 20px;--shadow: 0 18px 50px rgb(23 36 29 / 10%)}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button,input{font:inherit}button{cursor:pointer}.page-shell{width:min(1080px,calc(100% - 32px));margin:0 auto;padding:56px 0 48px}.hero{max-width:700px;margin-bottom:28px}.eyebrow{margin:0 0 10px;color:var(--accent);font-size:.78rem;font-weight:800;letter-spacing:.16em}h1,h2,p{margin-top:0}h1{margin-bottom:12px;font-size:clamp(2rem,6vw,3.5rem);letter-spacing:-.04em}.hero__description,.development-note{color:var(--text-muted);line-height:1.8}.game-card{padding:clamp(20px,4vw,40px);border:1px solid #e2e7e3;border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow)}.game-layout{display:grid;grid-template-columns:minmax(280px,440px) minmax(0,1fr);gap:clamp(28px,5vw,56px);align-items:start}.crossword-grid{display:grid;grid-template-columns:repeat(var(--grid-columns),1fr);width:100%;aspect-ratio:1;border:2px solid var(--block);background:var(--block);gap:1px}.cell{position:relative;min-width:0;background:var(--surface)}.cell--block{background:var(--block)}.cell--correct{background:var(--correct)}.cell--incorrect{background:var(--incorrect)}.cell__number{position:absolute;top:3px;left:4px;z-index:1;font-size:clamp(.55rem,2vw,.72rem);font-weight:700;pointer-events:none}.cell input{width:100%;height:100%;padding:10px 2px 2px;border:0;outline:0;background:transparent;color:var(--text);text-align:center;font-size:clamp(1.35rem,6vw,2.2rem);font-weight:700}.cell:focus-within{box-shadow:inset 0 0 0 3px var(--accent);z-index:2}.status-message{min-height:1.6em;margin:18px 0 14px;color:var(--text-muted);font-weight:600}.actions{display:flex;gap:10px;flex-wrap:wrap}.button{min-height:46px;padding:0 18px;border-radius:12px;border:1px solid transparent;font-weight:700}.button--primary{background:var(--accent);color:#fff}.button--primary:hover{background:var(--accent-strong)}.button--secondary{border-color:var(--line);background:var(--surface);color:var(--text)}.clues-panel{display:grid;gap:28px}.clues-panel h2{margin-bottom:12px;font-size:1.05rem}.clue-list{display:grid;gap:9px;margin:0;padding:0;list-style:none}.clue-list li{display:grid;grid-template-columns:28px 1fr;gap:8px;line-height:1.55}.clue__number{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:8px;background:var(--surface-muted);color:var(--accent-strong);font-size:.8rem;font-weight:800}.development-note{margin:18px 4px 0;font-size:.86rem}@media(max-width:760px){.page-shell{width:min(100% - 20px,620px);padding-top:28px}.game-layout{grid-template-columns:1fr}.game-card{padding:16px}.crossword-grid{max-width:520px;margin:0 auto}}.puzzle-picker{display:flex;gap:12px;align-items:end;justify-content:space-between;margin:0 0 18px;padding:14px 16px;border:1px solid #e2e7e3;border-radius:14px;background:var(--surface)}.puzzle-picker label{display:grid;gap:6px;flex:1;color:var(--text-muted);font-size:.85rem;font-weight:700}.puzzle-picker select{width:100%;min-height:44px;padding:0 12px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--text);font:inherit}@media(max-width:620px){.puzzle-picker{align-items:stretch;flex-direction:column}}