:root{--bg: #f4f1e8;--card: #fffdf7;--ink: #1d2b28;--muted: #5f6d68;--line: #d9d3c2;--accent: #173e38;--gold: #f5d694;color-scheme:light}@media(prefers-color-scheme:dark){:root{--bg: #0f1d1b;--card: #172825;--ink: #e8efe3;--muted: #9fb0a9;--line: #2d4440;color-scheme:dark}}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:var(--bg);color:var(--ink);font-family:Hiragino Sans,Yu Gothic,system-ui,sans-serif;line-height:1.6}button,select,input{font:inherit}button{min-height:40px;padding:6px 14px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--ink);cursor:pointer}button:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid var(--gold);outline-offset:2px}button.primary{background:var(--accent);border-color:var(--accent);color:#eaf0df}.admin-header{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:12px max(16px,4vw);background:var(--accent);color:#eaf0df}.admin-brand{color:inherit;text-decoration:none;font-family:Yu Mincho,Hiragino Mincho ProN,serif;font-size:22px;letter-spacing:.12em}.admin-badge{padding:2px 10px;border:1px solid #eaf0df66;border-radius:999px;font-size:13px}.admin-actions{margin-left:auto;display:flex;gap:8px}.admin-actions button{background:transparent;border-color:#eaf0df66;color:inherit}main{max-width:1040px;margin:0 auto;padding:24px 16px 48px}.admin-login{max-width:420px;margin:8vh auto;padding:28px;display:grid;gap:10px;background:var(--card);border:1px solid var(--line);border-radius:14px}.admin-login h1{margin:0;font-size:22px}.admin-login p{margin:0 0 6px;color:var(--muted)}.admin-login input{min-height:44px;padding:8px 12px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink)}.admin-error{color:#c2453a;min-height:1.6em}.admin-totals{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:16px}.admin-totals div{padding:16px 18px;background:var(--card);border:1px solid var(--line);border-radius:12px}.admin-totals span{display:block;color:var(--muted);font-size:13px}.admin-totals strong{font-size:34px;font-variant-numeric:tabular-nums;line-height:1.2}.admin-card{margin-bottom:16px;padding:18px;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden}.admin-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}.admin-card h2{margin:0;font-size:18px}.admin-tools{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.admin-tools select{min-height:40px;padding:4px 8px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--ink)}.admin-table-scroll{overflow-x:auto}.admin-table-scroll:focus-visible,.admin-difficulty-summary summary:focus-visible{outline:3px solid var(--gold);outline-offset:-3px}.admin-games{width:100%;min-width:760px;border-collapse:collapse}.admin-games th,.admin-games td{padding:10px 8px;border-top:1px solid var(--line);text-align:left;font-weight:400;vertical-align:middle}.admin-games thead th{border-top:0;color:var(--muted);font-size:13px}.admin-games .num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}.admin-games td:nth-child(2){width:28%}.admin-difficulty-summary{min-width:160px}.admin-difficulty-summary>small{display:block}.admin-difficulty-summary summary{min-height:44px;padding:10px 0;color:var(--muted);font-size:12px;cursor:pointer}.admin-difficulty-summary ul{margin:0;padding:0;list-style:none;text-align:left;font-size:12px}.admin-barcell{display:flex;align-items:center;gap:10px}.admin-bar{flex:1;height:12px;border-radius:6px;background:var(--bg);overflow:hidden}.admin-bar span{display:block;height:100%;border-radius:6px}.admin-dot{display:inline-block;width:10px;height:10px;margin-right:6px;border-radius:50%}.admin-legend{display:flex;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--muted)}.admin-daily svg{width:100%;height:auto;display:block}.admin-daily .grid{stroke:var(--line)}.admin-daily .axis{fill:var(--muted);font-size:11px}.admin-feedback{list-style:none;margin:0;padding:0}.admin-feedback li{padding:12px 0;border-top:1px solid var(--line)}.admin-feedback li:first-child{border-top:0}.admin-feedback p{margin:6px 0 0;white-space:pre-wrap;overflow-wrap:anywhere}.admin-feedback-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:14px}.admin-tag{padding:1px 8px;border:2px solid;border-radius:999px;font-size:12px}.admin-stars{color:#d39b1f;letter-spacing:1px}.admin-difficulty{padding:2px 8px;border-radius:6px;background:#e7f0e9;color:#173e38;font-size:13px}.admin-score{color:var(--accent);font-size:13px;font-variant-numeric:tabular-nums}.admin-feedback time{color:var(--muted)}.admin-delete{margin-left:auto;min-height:32px;padding:2px 10px;font-size:13px;color:#c2453a}.admin-muted{color:var(--muted)}@media(max-width:640px){.admin-totals{grid-template-columns:1fr}.admin-games thead th:nth-child(3),.admin-games td:nth-child(3){display:none}.admin-games td:nth-child(2){width:auto}.admin-actions{margin-left:0}}