:root { --bg:#f4f6fb; --card:#fff; --ink:#22303f; --mute:#6b7a8c; --line:#d9e0ea; --main:#2f6fed; --bad:#d64545; --ok:#2e9e5b; }
@media (prefers-color-scheme: dark) { :root { --bg:#141a22; --card:#1d2632; --ink:#e6edf5; --mute:#93a1b3; --line:#2c3846; --main:#5b8cff; } }
* { box-sizing: border-box; }
body { margin:0; background:var(--bg); color:var(--ink); font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; }
.top { display:flex; align-items:center; justify-content:space-between; gap:10px; padding:10px 16px; background:var(--card); border-bottom:1px solid var(--line); position:sticky; top:0; z-index:5; flex-wrap:wrap; }
.brand { font-weight:800; font-size:1.2em; color:var(--ink); text-decoration:none; }
nav { display:flex; gap:8px; align-items:center; flex-wrap:wrap; }
main { max-width: 980px; margin: 0 auto; padding: 16px; }
.btn { border:1px solid var(--line); background:var(--card); color:var(--ink); border-radius:10px; padding:8px 14px; font-size:.95em; cursor:pointer; }
.btn:hover { border-color:var(--main); }
.btn.primary { background:var(--main); color:#fff; border-color:var(--main); }
.btn.danger { color:var(--bad); }
.btn:disabled { opacity:.45; cursor:not-allowed; }
.btn.on { background:var(--main); color:#fff; border-color:var(--main); }
.hint { color:var(--mute); font-size:.9em; }
.msg { min-height:1.2em; color:var(--bad); font-size:.9em; }
.msg.ok { color:var(--ok); }
h2 { margin:6px 0 12px; }
.grid { display:grid; grid-template-columns: repeat(auto-fill, minmax(260px,1fr)); gap:12px; }
.card { background:var(--card); border:1px solid var(--line); border-radius:14px; padding:14px; display:flex; flex-direction:column; gap:8px; }
.card h3 { margin:0; }
.tags { display:flex; flex-wrap:wrap; gap:6px; }
.tag { background:var(--bg); border:1px solid var(--line); border-radius:999px; padding:1px 10px; font-size:.8em; color:var(--mute); }
.row { display:flex; gap:8px; flex-wrap:wrap; align-items:center; }
.modal { position:fixed; inset:0; background:rgba(0,0,0,.45); display:flex; align-items:center; justify-content:center; z-index:20; padding:16px; }
.modal.hidden { display:none; }
.modal-card { background:var(--card); border-radius:14px; padding:18px; width:100%; max-width:360px; display:flex; flex-direction:column; gap:10px; }
label { display:flex; flex-direction:column; gap:4px; font-size:.9em; color:var(--mute); }
input, select, textarea { padding:8px 10px; border:1px solid var(--line); border-radius:8px; background:var(--bg); color:var(--ink); font-size:1em; }
.form { background:var(--card); border:1px solid var(--line); border-radius:14px; padding:16px; display:grid; grid-template-columns: repeat(auto-fit, minmax(180px,1fr)); gap:12px; }
.form .wide { grid-column: 1 / -1; }
.stat { display:flex; gap:14px; align-items:center; flex-wrap:wrap; margin:8px 0; font-weight:700; }
.board-wrap { overflow:auto; padding:6px 0 20px; }
.board { display:grid; gap:2px; width:max-content; margin:0 auto; user-select:none; -webkit-user-select:none; touch-action: manipulation; }
.cell { width:var(--cs,36px); height:var(--cs,36px); font-size:calc(var(--cs,36px) * .55); font-weight:800; border:0; border-radius:6px; background:#8ea7d8; color:#123; cursor:pointer; padding:0; display:flex; align-items:center; justify-content:center; }
.cell:hover:not(.open):not(.boom) { filter:brightness(1.1); }
.cell.open { background:var(--card); border:1px solid var(--line); cursor:default; }
.cell.flag { background:#f3c969; }
.cell.boom { background:var(--bad); }
.cell.mine { background:#f0b3b3; }
.cell.editmine { background:var(--bad); color:#fff; }
.n1{color:#2563eb}.n2{color:#16a34a}.n3{color:#dc2626}.n4{color:#7c3aed}.n5{color:#b45309}.n6{color:#0891b2}.n7{color:#111}.n8{color:#666}
.banner { text-align:center; font-size:1.3em; font-weight:800; padding:10px; border-radius:12px; margin:8px 0; }
.banner.won { background:#dcf5e5; color:#17683a; }
.banner.lost { background:#fbdcdc; color:#8a1f1f; }
table { width:100%; border-collapse:collapse; background:var(--card); border-radius:12px; overflow:hidden; }
th, td { padding:8px 10px; border-bottom:1px solid var(--line); text-align:left; }
.warn { background:#fff6dd; color:#7a5a00; border:1px solid #f0d78a; border-radius:10px; padding:8px 12px; font-size:.9em; }
@media (prefers-color-scheme: dark) { .warn { background:#3a3218; color:#ecd28a; border-color:#5b4d1e; } .banner.won { background:#1d4630; color:#b6f0cd; } .banner.lost { background:#4a2020; color:#f5c2c2; } .cell { background:#4b6099; color:#fff; } }