:root{--blue: #1a4d7a;--blue-dark: #133a5c;--blue-light: #e8f1f8;--text: #1a1a1c;--text-sub: #5a5a5f;--border: #d8d8db;--bg: #f5f6f7;--surface: #ffffff;--danger: #b3261e;color-scheme:light}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Hiragino Sans,Noto Sans JP,sans-serif;font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);-webkit-text-size-adjust:100%}:focus-visible{outline:4px solid #1a1a1c;box-shadow:0 0 0 8px #f2c94c;outline-offset:0;border-radius:4px}.app{padding-bottom:calc(72px + env(safe-area-inset-bottom))}header.bar{background:var(--blue);color:#fff;padding:14px 16px;font-size:18px;font-weight:700;position:sticky;top:0;z-index:10}main{padding:16px;max-width:720px;margin:0 auto}.card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:16px;margin-bottom:16px}h2{font-size:18px;margin:0 0 12px}h3{font-size:16px;margin:20px 0 8px}p{margin:0 0 12px}.sub{color:var(--text-sub);font-size:14px}button{font:inherit;font-size:16px;border-radius:8px;border:2px solid var(--blue);background:var(--blue);color:#fff;padding:12px 16px;cursor:pointer;min-height:48px}button:disabled{opacity:.5;cursor:not-allowed}button.ghost{background:#fff;color:var(--blue)}button.danger{background:#fff;color:var(--danger);border-color:var(--danger)}button.block{width:100%}input,select,textarea{font:inherit;font-size:16px;width:100%;padding:10px 12px;border:1px solid #6a6a6f;border-radius:8px;background:#fff;color:var(--text)}label{display:block;font-size:14px;font-weight:700;margin:12px 0 4px}.row{display:flex;gap:8px;align-items:center}.row>*{flex:1}.row.tight>button{flex:0 0 auto}.scores{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}.scores button{padding:0;min-height:52px;font-weight:700;background:#fff;color:var(--blue)}.scores button[aria-pressed=true]{background:var(--blue);color:#fff}.hint{background:var(--blue-light);border-radius:8px;padding:12px;font-size:14px}.hint dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:2px 12px}.hint dt{font-weight:700}.hint dd{margin:0}table{width:100%;border-collapse:collapse;font-size:14px}th,td{border-bottom:1px solid var(--border);padding:8px 6px;text-align:left}th{color:var(--text-sub);font-weight:700}.thumb{width:100%;border-radius:8px;display:block}.chip{display:inline-block;font-size:14px;padding:2px 10px;border-radius:999px;background:var(--blue-light);color:var(--blue-dark);margin:0 6px 6px 0}.error{color:var(--danger);font-size:14px}.spinner{text-align:center;padding:24px;color:var(--text-sub)}nav.tabs{position:fixed;bottom:0;left:0;right:0;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom)}nav.tabs button{border:none;background:none;color:var(--text-sub);font-size:14px;border-radius:0;min-height:60px;padding:8px 0}nav.tabs button[aria-current=page]{color:var(--blue);font-weight:700;box-shadow:inset 0 3px 0 var(--blue)}.md h2{font-size:18px;margin:20px 0 8px}.md h3{font-size:16px}.md ul{padding-left:20px}.md table{margin:12px 0}.suspect{border:1px solid var(--border);border-radius:8px;padding:12px;margin-bottom:10px;background:#fafbfc}.suspect-head{display:flex;flex-wrap:wrap;align-items:center;gap:6px}.suspect-head .chip{margin:0}