:root{--bg:#fff;--fg:#1b1f24;--mut:#667;--line:#dde;--accent:#2a5bd7;--card:#f7f8fb;--bad:#b3261e;--good:#1b6e3a}
@media(prefers-color-scheme:dark){:root{--bg:#14161a;--fg:#e8eaee;--mut:#99a;--line:#2b2f38;--accent:#7aa2ff;--card:#1c1f26;--bad:#ff8a80;--good:#7ddc9c}}
*{box-sizing:border-box}body{margin:0;font:16px/1.5 system-ui,sans-serif;background:var(--bg);color:var(--fg)}
a{color:var(--accent)}header{display:flex;gap:1rem;align-items:center;justify-content:space-between;padding:.75rem 1rem;border-bottom:1px solid var(--line);flex-wrap:wrap}
header nav{display:flex;gap:1rem;align-items:center;flex-wrap:wrap}.brand{font-weight:700;text-decoration:none}
main{max-width:56rem;margin:0 auto;padding:1rem}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:.5rem;border-bottom:1px solid var(--line);vertical-align:top}
.card{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:1rem;margin:1rem 0}.narrow{max-width:24rem;margin:3rem auto}
label{display:block;margin:.5rem 0}input,select,button{font:inherit;padding:.4rem .6rem}input:not([type=file]):not([type=checkbox]),select{width:100%;max-width:28rem;display:block}label.check{display:flex;gap:.5rem;align-items:baseline}fieldset{border:1px solid #ddd;margin:.75rem 0}
button{cursor:pointer}button.link{background:none;border:0;color:var(--accent);padding:0;text-decoration:underline}.inline{display:inline}
.preview{width:100%;height:24rem;border:1px solid var(--line);border-radius:8px}.badge{font-size:.75rem;border:1px solid var(--line);border-radius:99px;padding:.1rem .5rem}
.badge.live{color:var(--good)}.error{color:var(--bad)}.ok{color:var(--good)}small{color:var(--mut)}.history{padding-left:1.2rem}.history li{margin:.75rem 0}
.diff{background:var(--card);padding:.5rem;overflow:auto}.add{color:var(--good)}.del{color:var(--bad)}.wide{max-width:100%}.warn{border-color:var(--bad)}