:root {
  --teal: #00B2A9;
  --teal-dark: #008f88;
  --navy: #041E42;
  --slate: #8D99AE;
  --bg: #F4F4F4;
  --card: #ffffff;
  --text: #041E42;
  --muted: #5d6b82;
  --border: #e2e5ea;
  --orange: #FC7A1E;
  --red: #d64545;
  --ok-bg: #e3f6f5;
  --warn-bg: #fff1e6;
  --err-bg: #fbe9e9;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1424; --card: #13213a; --text: #e8edf5; --muted: #9aa6ba;
    --border: #24365a; --ok-bg: #0f3534; --warn-bg: #3a2614; --err-bg: #3a1a1a;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Microsoft YaHei", sans-serif;
}
a { color: var(--teal-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
header.top {
  background: var(--navy); color: #fff; padding: 0 16px;
}
header.top .inner {
  max-width: 1080px; margin: 0 auto; display: flex; align-items: center;
  gap: 20px; min-height: 56px; flex-wrap: wrap;
}
header.top .brand { font-weight: 700; color: #fff; font-size: 17px; }
header.top .brand span { color: var(--teal); }
header.top nav { display: flex; gap: 14px; flex-wrap: wrap; flex: 1; }
header.top nav a { color: #cfd8e6; font-size: 14px; }
header.top nav a.active, header.top nav a:hover { color: #fff; text-decoration: none; }
header.top nav .sep { color: var(--slate); }
header.top .me { display: flex; gap: 10px; align-items: center; font-size: 14px; color: #cfd8e6; }
main { max-width: 1080px; margin: 0 auto; padding: 24px 16px 60px; }
h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 17px; margin: 28px 0 12px; }
p.lead { color: var(--muted); margin-top: -8px; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; margin-bottom: 16px;
}
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.muted { color: var(--muted); font-size: 13px; }
.mono { font-family: ui-monospace, Consolas, monospace; font-size: 13px; }

.btn {
  display: inline-block; border: 1px solid var(--teal); background: var(--teal); color: #fff;
  border-radius: 8px; padding: 7px 14px; font-size: 14px; cursor: pointer; line-height: 1.4;
}
.btn:hover { background: var(--teal-dark); text-decoration: none; }
.btn.ghost { background: transparent; color: var(--teal-dark); }
.btn.ghost:hover { background: var(--ok-bg); }
.btn.danger { background: transparent; border-color: var(--red); color: var(--red); }
.btn.small { padding: 4px 10px; font-size: 13px; }
.btn.accent { background: var(--orange); border-color: var(--orange); }
form.inline { display: inline; }

label { display: block; font-weight: 600; margin: 14px 0 4px; font-size: 14px; }
label.check { font-weight: 400; display: flex; gap: 8px; align-items: center; }
input[type=text], input[type=password], input[type=datetime-local], input[type=number],
input[type=time], select, textarea {
  width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--card); color: var(--text); font: inherit;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--teal); border-color: var(--teal); }
.hint { color: var(--muted); font-size: 13px; margin-top: 4px; }
.form-narrow { max-width: 560px; }

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 10px; font-size: 14px; }
.flash.ok { background: var(--ok-bg); }
.flash.warn { background: var(--warn-bg); }
.flash.error { background: var(--err-bg); }

.badge {
  display: inline-block; border-radius: 999px; padding: 1px 10px; font-size: 12px;
  background: var(--bg); color: var(--muted); border: 1px solid var(--border); white-space: nowrap;
}
.badge.ok { background: var(--ok-bg); color: var(--teal-dark); border-color: transparent; }
.badge.warn { background: var(--warn-bg); color: #b4540c; border-color: transparent; }
.badge.err { background: var(--err-bg); color: var(--red); border-color: transparent; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 13px; }
.table-wrap { overflow-x: auto; }

.acct h3 { margin: 0; font-size: 16px; }
.badge.plat { background: var(--navy); color: #fff; border-color: transparent; }
.badge.plat.smzdm { background: var(--orange); }

.tabs { display: flex; gap: 4px; margin: 0 0 12px; border-bottom: 1px solid var(--border); }
.tabs a { padding: 6px 14px; color: var(--muted); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs a.active { color: var(--text); border-bottom-color: var(--teal); font-weight: 600; }
textarea { resize: vertical; }
.scan-cta { display: flex; align-items: center; gap: 16px; justify-content: space-between;
            border-left: 4px solid var(--teal); }
.scan { text-align: center; }
.scan .qr { display: block; margin: 8px auto; border-radius: 8px; background: #fff; padding: 6px;
            transition: opacity .2s; }
.scan .hint { text-align: left; }
.scan .row { justify-content: center; }
.scan-state { font-weight: 600; font-size: 16px; margin: 8px 0 0; }
.scan-state.scanned, .scan-state.confirming { color: var(--teal-dark); }
.scan-state.failed { color: var(--red); }
.acct .channels { margin: 12px 0; display: grid; gap: 6px; }
.acct .channels div { display: flex; justify-content: space-between; gap: 8px; }
.acct .actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }

.auth-box { max-width: 380px; margin: 60px auto; }
.auth-box h1 { text-align: center; }
pre.log {
  background: var(--navy); color: #d6e2f0; padding: 12px; border-radius: 8px;
  max-height: 360px; overflow: auto; font-size: 12px; white-space: pre-wrap;
}
@media (max-width: 600px) {
  header.top .me { width: 100%; justify-content: flex-end; padding-bottom: 8px; }
}