:root {
    --bg: #0f1115;
    --panel: #171a21;
    --panel2: #1e222b;
    --fg: #e6e8ee;
    --muted: #9aa3b2;
    --line: #2a2f3a;
    --accent: #3b82f6;
    --ok: #22c55e;
    --warn: #f59e0b;
    --error: #ef4444;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
    background: var(--bg);
    color: var(--fg);
    line-height: 1.6;
}
body.narrow { max-width: 460px; margin: 0 auto; padding: 24px 16px; }
main { max-width: 860px; margin: 0 auto; padding: 20px 16px 60px; }
h1.brand { font-size: 20px; margin: 8px 0 20px; }
.topbar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 20px; border-bottom: 1px solid var(--line); background: var(--panel);
}
.topbar .brand { font-size: 16px; margin: 0; }
.card {
    background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
    padding: 18px 20px; margin: 16px 0;
}
.card h2 { font-size: 15px; margin: 0 0 12px; color: var(--fg); }
.kv { display: grid; grid-template-columns: 110px 1fr; gap: 6px 14px; }
.kv .k { color: var(--muted); }
.kv .v { word-break: break-all; }
.strong { font-weight: 700; }
.mono { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; }
.muted { color: var(--muted); font-size: 13px; }
label { display: block; margin: 10px 0; font-size: 14px; }
input[type=file], input[type=password] {
    display: block; width: 100%; margin-top: 6px; padding: 8px 10px;
    background: var(--panel2); color: var(--fg); border: 1px solid var(--line); border-radius: 8px;
}
button {
    appearance: none; border: 1px solid var(--line); background: var(--panel2); color: var(--fg);
    padding: 8px 16px; border-radius: 8px; cursor: pointer; font-size: 14px;
}
button.accent, button[type=submit].accent { background: var(--accent); border-color: var(--accent); color: #fff; }
button.ghost { background: transparent; }
button:hover { filter: brightness(1.12); }
.inline { display: inline; margin: 0; }
.banner { padding: 10px 14px; border-radius: 8px; margin: 12px 0; font-size: 14px; border: 1px solid var(--line); }
.banner.ok { background: rgba(34,197,94,.12); border-color: rgba(34,197,94,.4); }
.banner.error { background: rgba(239,68,68,.12); border-color: rgba(239,68,68,.4); }
.banner.warn { background: rgba(245,158,11,.12); border-color: rgba(245,158,11,.4); }
table.list { width: 100%; border-collapse: collapse; font-size: 14px; }
table.list th, table.list td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
table.list th { color: var(--muted); font-weight: 600; }
pre.mono { background: var(--panel2); border: 1px solid var(--line); border-radius: 8px; padding: 12px; overflow:auto; }