:root, html[data-theme="light"] {
  --bg: #eef1f6;
  --bg-elevated: #ffffff;
  --bg-soft: #e7ebf2;
  --text: #1a2332;
  --muted: #66748a;
  --line: rgba(18, 24, 33, 0.1);
  --accent: #0c6b8a;
  --accent-soft: rgba(12, 107, 138, 0.1);
  --felt-deep: #0a3f54;
  --bar-high: #e4572e;
  --danger: #d64545;
  --ok: #1f8a5b;
  --shadow: 0 10px 30px rgba(18, 24, 33, 0.06);
  --header-bg: rgba(255, 255, 255, 0.9);
  --page-top: #f7f8fb;
  --radius: 14px;
  --font-display: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
html[data-theme="dark"] {
  --bg: #0f141b;
  --bg-elevated: #1a222d;
  --bg-soft: #232d3b;
  --text: #e4ebf4;
  --muted: #93a1b5;
  --line: rgba(232, 238, 246, 0.12);
  --accent: #3cb4d8;
  --accent-soft: rgba(60, 180, 216, 0.16);
  --felt-deep: #d7e8f3;
  --bar-high: #f0714e;
  --danger: #f07171;
  --ok: #3ecf8e;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --header-bg: rgba(26, 34, 45, 0.92);
  --page-top: #121820;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  color: var(--text);
  font-family: var(--font-body);
  background: linear-gradient(180deg, var(--page-top) 0%, var(--bg) 180px), var(--bg);
}
body.auth-body {
  background: #0a141c;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  background: var(--header-bg);
}
.topbar-inner {
  max-width: 80rem;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
}
@media (min-width: 768px) {
  .topbar-inner { padding: 0.75rem 1.5rem; }
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--felt-deep);
  white-space: nowrap;
  flex-shrink: 0;
}
.brand img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  object-fit: cover;
  flex-shrink: 0;
}
.nav-desk {
  display: none;
  flex: 1;
  gap: 0.25rem;
  min-width: 0;
  justify-content: center;
  flex-wrap: nowrap;
}
.nav-desk a {
  border-radius: 0.5rem;
  padding: 0.5rem 0.65rem;
  font-size: 0.875rem;
  color: var(--muted);
  transition: background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
  flex: 0 0 auto;
}
.nav-desk a:hover { background: var(--bg-soft); }
.nav-desk a.nav-active {
  background: var(--accent-soft);
  color: var(--felt-deep);
  font-weight: 600;
}
.nav-mob {
  display: flex;
  gap: 0.25rem;
  overflow-x: auto;
  border-top: 1px solid var(--line);
  padding: 0.5rem 1rem;
}
.nav-mob a {
  white-space: nowrap;
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  background: var(--bg-soft);
  color: var(--muted);
}
.nav-mob a.active { background: var(--accent); color: #fff; }
@media (min-width: 768px) {
  .nav-desk { display: flex; }
  .nav-mob { display: none; }
}
.top-actions { margin-left: auto; display: flex; align-items: center; gap: 0.5rem; flex-shrink: 0; }
.user-meta { display: none; text-align: right; }
.user-meta .name { font-size: 0.875rem; font-weight: 600; color: var(--felt-deep); }
.user-meta .role { font-size: 0.75rem; color: var(--muted); }
@media (min-width: 640px) { .user-meta { display: block; } }

.btn-ghost, .btn-primary, button.btn, .btn {
  border-radius: 0.5rem;
  padding: 0.4rem 0.75rem;
  font-size: 0.75rem;
  cursor: pointer;
}
.btn-ghost {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
}
.btn-ghost:hover { background: var(--bg-soft); }
.btn-primary, .btn {
  border: none;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}
.btn-primary:hover { filter: brightness(0.95); }

.container {
  max-width: 80rem;
  margin: 0 auto;
  padding: 1.5rem 1rem;
}
@media (min-width: 768px) {
  .container { padding: 1.5rem 1.5rem; }
}
.panel {
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.alert {
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.875rem;
}
.alert.ok { background: rgba(31,138,91,.12); color: var(--ok); border: 1px solid rgba(31,138,91,.3); }
.alert.err { background: rgba(214,69,69,.12); color: var(--danger); border: 1px solid rgba(214,69,69,.3); }

.eyebrow {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--accent);
}
h1 {
  margin: 0.25rem 0 0;
  color: var(--felt-deep);
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
}
.muted { color: var(--muted); font-size: 0.875rem; }

.kpi-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(2, 1fr);
  margin: 1.25rem 0;
}
@media (min-width: 900px) {
  .kpi-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1100px) {
  .kpi-grid { grid-template-columns: repeat(6, 1fr); }
}
.kpi { padding: 1rem; }
.kpi .label { font-size: 0.75rem; color: var(--muted); }
.kpi .value {
  margin-top: 0.5rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--felt-deep);
}

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
th, td { padding: 0.7rem 0.5rem; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
th { color: var(--muted); font-weight: 600; }
.row-actions { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.badge {
  display: inline-block;
  border-radius: 999px;
  padding: 0.1rem 0.5rem;
  font-size: 0.75rem;
}
.badge.ok { background: rgba(31,138,91,.15); color: var(--ok); }
.badge.err { background: rgba(214,69,69,.15); color: var(--danger); }

.input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: var(--bg-elevated);
  color: var(--text);
  padding: 0.55rem 0.75rem;
  outline: none;
}
input.input[type="datetime-local"] {
  min-width: 13.5rem;
  width: auto;
}
.input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
label { display: block; margin-bottom: 0.85rem; font-size: 0.875rem; }
label span { display: block; margin-bottom: 0.35rem; color: var(--muted); }

.toolbar { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem; align-items: end; }
.toolbar .grow { flex: 1; min-width: 160px; }
.tabs { display: flex; gap: 0.5rem; margin-bottom: 1rem; }
.tabs a {
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--muted);
  font-size: 0.875rem;
}
.tabs a.active { background: var(--accent); color: #fff; }
.form-grid { display: grid; gap: 0.25rem; }
@media (min-width: 720px) { .form-grid.two { grid-template-columns: 1fr 1fr; gap: 0.75rem; } }

.trend-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 1rem;
}
@media (min-width: 1024px) {
  .trend-grid { grid-template-columns: 1fr 1fr; }
}
.trend-card { padding: 1rem 1.1rem 1.1rem; }
.trend-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}
.trend-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--felt-deep);
}
.trend-sub { margin: 0.2rem 0 0; font-size: 0.75rem; }
.trend-stat { text-align: right; }
.trend-latest {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--felt-deep);
  font-variant-numeric: tabular-nums;
}
.trend-latest .unit {
  margin-left: 0.25rem;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--muted);
}
.trend-delta {
  font-size: 0.75rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.trend-delta.up { color: var(--ok); }
.trend-delta.down { color: var(--danger); }
.trend-svg { width: 100%; height: auto; display: block; }
.grid-line { stroke: var(--line); stroke-dasharray: 4 4; }
.grid-label, .axis-label { font-size: 10px; fill: var(--muted); }
.trend-foot {
  margin-top: 0.5rem;
  display: flex;
  justify-content: flex-end;
  font-size: 0.75rem;
}

.login-page {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.login-bg-video {
  pointer-events: none;
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}
.login-bg-mask {
  position: fixed;
  inset: 0;
  z-index: 0;
  background: linear-gradient(180deg, rgba(10,20,28,0.35) 0%, rgba(10,20,28,0.55) 55%, rgba(10,20,28,0.7) 100%);
}
.login-card {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 28rem;
  border-radius: 1rem;
  background: rgba(18,28,36,.72);
  color: #fff;
  padding: 1.75rem;
  backdrop-filter: blur(8px);
  box-shadow: 0 20px 50px rgba(0,0,0,.35);
}
.login-card .input {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.15);
  color: #fff;
}
.login-card select.input {
  appearance: auto;
  cursor: pointer;
}
.login-card select.input option {
  color: #111;
  background: #fff;
}
.login-card label span { color: rgba(255,255,255,.7); }
.captcha-row { display: flex; gap: 0.5rem; align-items: center; }
.captcha-row img { height: 48px; border-radius: 8px; cursor: pointer; }

.pager {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 1rem;
}
.pager-btns { display: flex; gap: 0.5rem; }

.modal-mask {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(0,0,0,.45);
  display: grid;
  place-items: center;
  padding: 1rem;
}
.modal {
  width: 100%;
  max-width: 42rem;
  max-height: 90vh;
  overflow: auto;
  border-radius: var(--radius);
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--line);
}
.modal-body { padding: 1.25rem; }
.detail-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(2, 1fr);
  margin: 1rem 0;
}
@media (min-width: 640px) {
  .detail-grid { grid-template-columns: repeat(3, 1fr); }
}
.detail-item {
  background: var(--bg-soft);
  border-radius: 0.75rem;
  padding: 0.75rem;
}
.detail-item .k { font-size: 0.75rem; color: var(--muted); }
.detail-item .v {
  margin-top: 0.25rem;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--felt-deep);
}
.detail-meta {
  display: grid;
  gap: 0.55rem 1rem;
  margin: 0.75rem 0 0.25rem;
  font-size: 0.92rem;
  color: var(--felt-deep);
}
@media (min-width: 640px) {
  .detail-meta { grid-template-columns: 1fr 1fr; }
}
.detail-meta > div {
  display: flex;
  gap: 0.5rem;
  min-width: 0;
}
.detail-meta > .full { grid-column: 1 / -1; }
.detail-meta .k {
  flex: 0 0 auto;
  color: var(--muted);
}
.detail-meta .k::after { content: "："; }
.detail-meta .v {
  min-width: 0;
  font-weight: 600;
  word-break: break-all;
}
.detail-meta .v.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.kpi .tip { margin-top: 0.25rem; font-size: 11px; color: var(--muted); }
.ban-reason { display: block; max-width: 10rem; overflow: hidden; text-overflow: ellipsis; color: var(--danger); font-size: 0.75rem; }