:root {
  --bg: #f5f7fa;
  --surface: #ffffff;
  --surface-2: #f0f3f7;
  --border: #e1e6ed;
  --text: #17202c;
  --muted: #5d6b7e;
  --primary: #0b6bcb;
  --primary-ink: #ffffff;
  --primary-soft: #e6f0fb;
  --valid: #11804a;
  --valid-soft: #e3f5ea;
  --invalid: #c62f2f;
  --invalid-soft: #fbe7e7;
  --risky: #a35f00;
  --risky-soft: #fdf1dc;
  --unknown: #56657a;
  --unknown-soft: #eceff3;
  --error: #7a3fb2;
  --error-soft: #f2eafa;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 2px 8px rgba(16, 24, 40, .04);
  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f141b;
    --surface: #161d26;
    --surface-2: #1c2531;
    --border: #2a3542;
    --text: #e6ebf1;
    --muted: #97a3b4;
    --primary: #4d9ef0;
    --primary-ink: #08121e;
    --primary-soft: #16304b;
    --valid: #4cc98a;
    --valid-soft: #14301f;
    --invalid: #f07272;
    --invalid-soft: #3a1b1b;
    --risky: #f0b24d;
    --risky-soft: #3a2a12;
    --unknown: #a6b2c2;
    --unknown-soft: #242e3a;
    --error: #c39af0;
    --error-soft: #2e2240;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial,
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .6em; }
h1 { font-size: 1.55rem; }
h2 { font-size: 1.2rem; }
h3 { font-size: 1.02rem; }
p { margin: 0 0 1em; }
code, pre, .mono { font-family: var(--mono); font-size: .88em; }
code { background: var(--surface-2); padding: .1em .35em; border-radius: 4px; }
pre { background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px;
  overflow-x: auto; line-height: 1.45; margin: 0 0 1em; }
pre code { background: none; padding: 0; }
.muted { color: var(--muted); }
.small { font-size: .86rem; }
.nowrap { white-space: nowrap; }
.right { text-align: right; }
.hidden { display: none !important; }

/* ---- layout ---- */
.topbar { background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
.topbar-inner { max-width: 1180px; margin: 0 auto; padding: 0 16px; height: 56px; display: flex; align-items: center; gap: 18px; }
.brand { display: flex; align-items: center; gap: 9px; font-weight: 700; color: var(--text); white-space: nowrap; }
.brand:hover { text-decoration: none; }
.brand svg { flex: none; }
.nav { display: flex; gap: 2px; flex: 1; overflow-x: auto; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav a { color: var(--muted); padding: 7px 11px; border-radius: 7px; white-space: nowrap; font-weight: 500; }
.nav a:hover { background: var(--surface-2); color: var(--text); text-decoration: none; }
.nav a.active { color: var(--primary); background: var(--primary-soft); }
.top-right { display: flex; align-items: center; gap: 10px; white-space: nowrap; }
.lang-switch { display: inline-flex; border: 1px solid var(--border); border-radius: 7px; overflow: hidden; }
.lang-switch a { padding: 4px 9px; font-size: .82rem; color: var(--muted); }
.lang-switch a.on { background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.lang-switch a:hover { text-decoration: none; }
.user-chip { color: var(--muted); font-size: .88rem; }
.container { max-width: 1180px; margin: 0 auto; padding: 24px 16px 56px; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; }
.page-head h1 { margin: 0; }
.page-head p { margin: 4px 0 0; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 20px; margin-bottom: 18px; min-width: 0; }
.card > h2:first-child, .card > h3:first-child { margin-top: 0; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.card-head h2, .card-head h3 { margin: 0; }
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid > .card { margin-bottom: 0; }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: minmax(0, 1fr); }
  .user-chip { display: none; }
  .container { padding-top: 18px; }
  .card { padding: 16px; }
}

/* ---- auth pages ---- */
.auth-wrap { min-height: calc(100vh - 56px); display: flex; align-items: center; justify-content: center; padding: 24px 16px; }
.auth-card { width: 100%; max-width: 400px; }
.auth-card h1 { font-size: 1.35rem; }

/* ---- forms ---- */
label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: 5px; }
.field { margin-bottom: 14px; }
.field .hint { font-weight: 400; color: var(--muted); font-size: .82rem; margin-top: 4px; }
input[type=text], input[type=password], input[type=number], input[type=email], input[type=search], select, textarea {
  width: 100%; padding: 9px 11px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface);
  color: var(--text); font: inherit; outline: none; transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
textarea { min-height: 180px; resize: vertical; font-family: var(--mono); font-size: .88rem; }
.check { display: flex; gap: 9px; align-items: flex-start; font-weight: 500; }
.check input { margin-top: 4px; }
.check .hint { margin-top: 0; }
.form-row { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; }
.form-row .field { flex: 1 1 180px; margin-bottom: 0; }
.inline-form { display: inline; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 7px; padding: 9px 16px; border-radius: 8px;
  border: 1px solid transparent; background: var(--primary); color: var(--primary-ink); font: inherit; font-weight: 600;
  cursor: pointer; white-space: nowrap; line-height: 1.2; }
.btn:hover { filter: brightness(1.06); text-decoration: none; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: var(--surface-2); filter: none; }
.btn-danger { background: var(--surface); color: var(--invalid); border-color: var(--border); }
.btn-danger:hover { background: var(--invalid-soft); filter: none; }
.btn-sm { padding: 5px 10px; font-size: .84rem; }
.btn-block { width: 100%; }
.btn-link { background: none; border: none; color: var(--muted); padding: 0; font: inherit; cursor: pointer; }
.btn-link:hover { color: var(--text); }
.actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

.alert { padding: 11px 14px; border-radius: 8px; margin-bottom: 16px; border: 1px solid transparent; }
.alert-ok { background: var(--valid-soft); color: var(--valid); border-color: color-mix(in srgb, var(--valid) 25%, transparent); }
.alert-err { background: var(--invalid-soft); color: var(--invalid); border-color: color-mix(in srgb, var(--invalid) 25%, transparent); }
.alert-info { background: var(--primary-soft); color: var(--text); }
.alert-warn { background: var(--risky-soft); color: var(--text); }

/* ---- tabs ---- */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin: -4px 0 16px; }
.tabs button { background: none; border: none; border-bottom: 2px solid transparent; padding: 9px 14px; font: inherit;
  font-weight: 600; color: var(--muted); cursor: pointer; margin-bottom: -1px; }
.tabs button.on { color: var(--primary); border-bottom-color: var(--primary); }

/* ---- tables ---- */
.table-wrap { overflow-x: auto; margin: 0 -4px; padding: 0 4px; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { font-size: .78rem; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); font-weight: 600; white-space: nowrap; }
tbody tr:hover { background: var(--surface-2); }
td.email { font-family: var(--mono); font-size: .86rem; word-break: break-all; min-width: 180px; }
.empty { text-align: center; color: var(--muted); padding: 28px 10px; }

/* ---- badges ---- */
.badge { display: inline-flex; align-items: center; gap: 5px; padding: 2px 9px; border-radius: 999px; font-size: .78rem;
  font-weight: 700; white-space: nowrap; text-transform: uppercase; letter-spacing: .02em; }
.badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.b-valid { background: var(--valid-soft); color: var(--valid); }
.b-invalid { background: var(--invalid-soft); color: var(--invalid); }
.b-risky { background: var(--risky-soft); color: var(--risky); }
.b-unknown { background: var(--unknown-soft); color: var(--unknown); }
.b-error { background: var(--error-soft); color: var(--error); }
.tag { display: inline-block; padding: 1px 7px; border-radius: 5px; font-size: .76rem; background: var(--surface-2);
  color: var(--muted); border: 1px solid var(--border); white-space: nowrap; }
.tag-on { background: var(--valid-soft); color: var(--valid); border-color: transparent; }
.tag-off { background: var(--unknown-soft); color: var(--unknown); border-color: transparent; }
.tag-warn { background: var(--risky-soft); color: var(--risky); border-color: transparent; }
.tag-daily { background: var(--primary-soft); color: var(--primary); border-color: transparent; }

/* ---- stats ---- */
.stat .label { color: var(--muted); font-size: .82rem; font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
.stat .value { font-size: 1.75rem; font-weight: 700; margin-top: 2px; font-variant-numeric: tabular-nums; }
.stat .sub { color: var(--muted); font-size: .84rem; }

progress.bar { -webkit-appearance: none; appearance: none; width: 100%; height: 8px; border: none; border-radius: 99px;
  background: var(--surface-2); overflow: hidden; display: block; }
progress.bar::-webkit-progress-bar { background: var(--surface-2); border-radius: 99px; }
progress.bar::-webkit-progress-value { background: var(--primary); border-radius: 99px; }
progress.bar::-moz-progress-bar { background: var(--primary); border-radius: 99px; }
progress.bar.hot::-webkit-progress-value { background: var(--invalid); }
progress.bar.hot::-moz-progress-bar { background: var(--invalid); }
progress.bar.warm::-webkit-progress-value { background: var(--risky); }
progress.bar.warm::-moz-progress-bar { background: var(--risky); }

/* ---- verify result ---- */
.verify-form { display: flex; gap: 10px; flex-wrap: wrap; }
.verify-form input[type=text] { flex: 1 1 280px; font-size: 1.02rem; padding: 11px 13px; }
.verify-form select { flex: 0 1 220px; }
.result { border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; margin-top: 18px; background: var(--surface); }
.result-top { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.result-email { font-family: var(--mono); font-size: 1.02rem; font-weight: 600; word-break: break-all; }
.result .badge { font-size: .9rem; padding: 4px 12px; }
.checks { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; margin-bottom: 12px; }
.check-item { background: var(--surface-2); border-radius: 8px; padding: 8px 11px; font-size: .88rem; display: flex;
  justify-content: space-between; gap: 8px; }
.check-item b { font-weight: 600; }
.yes { color: var(--valid); }
.no { color: var(--invalid); }
.na { color: var(--muted); }
.kv { display: flex; gap: 18px; flex-wrap: wrap; font-size: .9rem; color: var(--muted); }
.kv b { color: var(--text); font-weight: 600; }
.progress-line { display: flex; align-items: center; gap: 12px; margin: 12px 0; flex-wrap: wrap; }
.progress-line progress { flex: 1 1 200px; }
.summary-pills { display: flex; gap: 8px; flex-wrap: wrap; }

.pager { display: flex; gap: 6px; align-items: center; justify-content: flex-end; margin-top: 14px; flex-wrap: wrap; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.filters input[type=search] { width: 240px; max-width: 100%; }
.filters select { width: auto; }

.provider-card { border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; background: var(--surface); }
.provider-card h3 { margin: 0; }
.provider-meta { display: flex; gap: 6px; flex-wrap: wrap; margin: 6px 0 10px; }
.provider-usage { display: flex; justify-content: space-between; font-size: .86rem; color: var(--muted); margin-bottom: 5px; }
.provider-error { font-size: .82rem; color: var(--invalid); margin-top: 8px; word-break: break-word; }
.catalog { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 10px; }
.catalog a { display: block; border: 1px solid var(--border); border-radius: 9px; padding: 10px 12px; color: var(--text); background: var(--surface); }
.catalog a:hover { border-color: var(--primary); text-decoration: none; }
.catalog .ct { font-weight: 600; }
.catalog .cs { font-size: .8rem; color: var(--muted); }

.token-box { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.token-box code { font-size: .9rem; padding: 8px 10px; word-break: break-all; flex: 1 1 300px; }

/* ---- docs ---- */
.docs { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 24px; }
.docs-nav { position: sticky; top: 76px; align-self: start; font-size: .9rem; }
.docs-nav a { display: block; padding: 5px 10px; color: var(--muted); border-radius: 6px; }
.docs-nav a:hover { background: var(--surface-2); color: var(--text); text-decoration: none; }
.docs-nav .grp { font-size: .74rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); margin: 12px 10px 4px; font-weight: 700; }
.docs section { scroll-margin-top: 76px; }
.docs h2 { margin-top: .2em; }
.docs h3 { margin-top: 1.4em; }
.endpoint { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-family: var(--mono); font-size: .95rem; margin: 6px 0 12px; }
.method { font-weight: 700; font-size: .78rem; padding: 3px 8px; border-radius: 5px; color: #fff; }
.m-get { background: #11804a; }
.m-post { background: #0b6bcb; }
.privacy { border-left: 3px solid var(--valid); }
@media (max-width: 860px) { .docs { grid-template-columns: minmax(0, 1fr); } .docs-nav { position: static; display: none; } }

.footer { text-align: center; color: var(--muted); font-size: .82rem; padding: 0 16px 28px; }
.auth-foot { margin: 14px 0 0; }
.error-card { margin: 40px auto; }
.tabs a { padding: 9px 14px; font-weight: 600; color: var(--muted); border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap; }
.tabs a:hover { color: var(--text); text-decoration: none; }
.tabs a.on { color: var(--primary); border-bottom-color: var(--primary); }
.admin-tabs { overflow-x: auto; margin-bottom: 20px; scrollbar-width: none; }
.provider-reset { margin: 6px 0 0; }
.test-out { margin-top: 12px; max-height: 420px; }
.result .kv { margin-top: 6px; }

.verify-form + .alert { margin: 14px 0 0; }
@media (max-width: 760px) {
  .topbar-inner { flex-wrap: wrap; height: auto; padding-top: 10px; gap: 8px 12px; }
  .brand { flex: 1 1 auto; min-width: 0; }
  .brand span { overflow: hidden; text-overflow: ellipsis; }
  .nav { order: 3; flex: 1 1 100%; margin: 0 -6px; padding-bottom: 6px; }
  .page-head { align-items: flex-start; }
}