* { box-sizing: border-box; }
:root {
  --bg: #f5f5f7; --card: #fff; --text: #1d1d1f; --muted: #6e6e73; --line: #e5e5ea;
  --primary: #0071e3; --danger: #d70015; --ok: #248a3d; --warn: #b25000;
}
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif; background: var(--bg); color: var(--text); line-height: 1.55; }
.wrap { max-width: 560px; margin: 0 auto; padding: 20px 16px 60px; }
.wrap.wide { max-width: 1200px; }
h1 { font-size: 22px; margin: 8px 0 4px; }
h2 { font-size: 17px; margin: 0 0 12px; }
.muted { color: var(--muted); font-size: 13px; }
.card { background: var(--card); border-radius: 14px; padding: 18px; margin: 14px 0; box-shadow: 0 1px 3px rgba(0,0,0,.05); }
.notice { background: #fff8e6; border: 1px solid #ffe2a8; color: #7a4b00; border-radius: 10px; padding: 10px 12px; font-size: 14px; }
.warn-box { background: #fff1f0; border: 1px solid #ffc9c5; color: #8a1c13; border-radius: 10px; padding: 10px 12px; font-size: 14px; }
input, textarea, select { width: 100%; font: inherit; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
textarea { min-height: 120px; font-family: Consolas, monospace; font-size: 13px; }
label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
button, .btn { display: inline-block; font: inherit; font-size: 15px; border: 0; border-radius: 10px; padding: 10px 16px; background: var(--primary); color: #fff; cursor: pointer; text-decoration: none; text-align: center; }
button:disabled { opacity: .5; cursor: default; }
button.secondary, .btn.secondary { background: #e8e8ed; color: var(--text); }
button.danger { background: var(--danger); }
button.small { padding: 4px 10px; font-size: 13px; border-radius: 8px; }
.block { display: block; width: 100%; margin-top: 10px; }
.row { display: flex; gap: 10px; align-items: center; }
.row > * { flex: 1; }
.cred { display: flex; align-items: center; gap: 8px; background: var(--bg); border-radius: 10px; padding: 10px 12px; margin: 8px 0; }
.cred .k { color: var(--muted); font-size: 13px; width: 64px; flex: none; }
.cred .v { flex: 1; font-family: Consolas, monospace; font-size: 16px; word-break: break-all; }
.timer { font-size: 28px; font-weight: 600; text-align: center; margin: 6px 0; font-variant-numeric: tabular-nums; }
.timer.low { color: var(--danger); }
ol.steps { padding-left: 20px; margin: 0; }
ol.steps li { margin: 6px 0; }
.err { color: var(--danger); font-size: 14px; min-height: 20px; margin-top: 8px; }
.hidden { display: none !important; }

/* admin */
.topbar { display: flex; justify-content: space-between; align-items: center; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin: 14px 0; }
.tabs button { background: #e8e8ed; color: var(--text); }
.tabs button.active { background: var(--primary); color: #fff; }
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.stat { background: var(--card); border-radius: 12px; padding: 14px; }
.stat .n { font-size: 26px; font-weight: 600; }
table { width: 100%; border-collapse: collapse; font-size: 13px; background: var(--card); }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 500; white-space: nowrap; }
td .actions { display: flex; gap: 4px; flex-wrap: wrap; }
.table-wrap { overflow-x: auto; border-radius: 12px; }
.badge { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; white-space: nowrap; }
.b-idle, .b-done { background: #e3f6e8; color: var(--ok); }
.b-in_use, .b-active { background: #e1efff; color: var(--primary); }
.b-pending_reset, .b-expired { background: #fff1db; color: var(--warn); }
.b-locked, .b-reported, .b-revoked { background: #ffe5e3; color: var(--danger); }
.b-disabled { background: #eee; color: #888; }
.note { white-space: pre-wrap; max-width: 260px; color: var(--muted); }
.mono { font-family: Consolas, monospace; }
.toast { position: fixed; left: 50%; bottom: 30px; transform: translateX(-50%); background: rgba(0,0,0,.8); color: #fff; padding: 8px 16px; border-radius: 8px; font-size: 14px; z-index: 99; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }
@media (max-width: 640px) { .grid2 { grid-template-columns: 1fr; } }