:root{--bg:#f3f5f7;--surface:#fff;--ink:#1f2a37;--muted:#5b6675;--line:#dde2e8;--line-strong:#c9d1dc;--line-soft:#edf0f3;--accent:#2f4b8a;--accent-soft:#e4e9f2;--amber-soft:#f6e3bf;--disabled:#e7eaee;--disabled-ink:#6b7482;--arrow:#8a94a3;--mincho:"Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif CJK JP", serif;--gothic:"Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans CJK JP", sans-serif;--cell:76px;--gap:32px;--cell-font:40px}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{background:var(--bg);color:var(--ink);font-family:var(--gothic);margin:0}button{color:inherit;font-family:inherit}a{color:var(--accent)}:focus-visible{outline:3px solid var(--accent);outline-offset:2px}h1,h2,p{margin:0}.mincho{font-family:var(--mincho)}.screen{max-width:480px;min-height:100dvh;padding-top:env(safe-area-inset-top);flex-direction:column;margin:0 auto;display:flex}.load-message{text-align:center;color:var(--muted);padding:48px 24px}.content{flex-grow:1;padding:32px 24px 24px}.date{color:var(--muted);letter-spacing:.04em;font-size:13px}.title-row{justify-content:space-between;align-items:center;gap:8px;margin-top:4px;display:flex}.app-title{letter-spacing:.08em;font-size:32px;font-weight:700}.streak{background:var(--surface);border:1px solid var(--line);white-space:nowrap;border-radius:999px;align-items:center;gap:6px;padding:6px 12px;font-size:14px;font-weight:700;display:flex}.section{margin-top:28px}.section-title{color:var(--muted);letter-spacing:.1em;margin-bottom:12px;font-size:13px;font-weight:700}.daily-list{flex-direction:column;gap:12px;display:flex}.daily-card{color:var(--ink);background:var(--surface);border:1px solid 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env(safe-area-inset-bottom));flex-direction:column;gap:16px;display:flex}.control-row{color:var(--muted);justify-content:space-between;align-items:center;font-size:13px;display:flex}.hint-button{background:var(--surface);border:1px solid var(--line);cursor:pointer;border-radius:999px;align-items:center;gap:6px;min-height:44px;padding:10px 16px;font-size:14px;font-weight:700;display:flex}.hint-button:disabled{color:var(--disabled-ink);background:var(--disabled);cursor:default}.cross{grid-template-columns:var(--cell) var(--gap) var(--cell) var(--gap) var(--cell);grid-template-rows:var(--cell) var(--gap) var(--cell) var(--gap) var(--cell);font-family:var(--mincho);display:grid}.cross-cell{background:var(--surface);border:1px solid var(--line);font-size:var(--cell-font);border-radius:14px;justify-content:center;align-items:center;font-weight:700;display:flex}.cross-cell.blank{border:2px dashed 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.cross-cell.blank{background:var(--surface)}.control-panel{flex:0 0 min(420px,42vw);padding:0;overflow:auto}.tile,.tiles.tall .tile,.tiles.five.tall .tile{height:92px;font-size:42px}.tiles{gap:12px}.today-record{display:flex}.slots{max-width:480px}.slot{height:104px}.slot.filled{font-size:52px}.screen.with-nav,.screen.result{max-width:640px}}@media (width>=768px) and (height<=700px){:root{--cell:76px;--gap:28px;--cell-font:40px}.tile,.tiles.tall .tile,.tiles.five.tall .tile{height:72px;font-size:34px}}