:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --ink: #1b1f27;
  --muted: #6b7280;
  --line: #e5e7eb;
  --brand: #3b5bfd;
  --brand-dark: #2c46cf;
  --ok: #16a34a;
  --bad: #dc2626;
  --radius: 12px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 14px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--mono); font-size: 0.92em; background: #f1f3f6; padding: 1px 6px; border-radius: 5px; }

/* topbar */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 0 24px; height: 60px;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--ink); font-size: 15px; }
.brand:hover { text-decoration: none; }
.logo {
  width: 22px; height: 22px; border-radius: 7px; display: inline-block;
  background: linear-gradient(135deg, #4f6bff, #8b5cf6);
}
.nav { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.nav a { padding: 7px 12px; border-radius: 8px; color: #4b5563; font-weight: 500; }
.nav a:hover { background: #eef1f6; text-decoration: none; }
.nav a.on { background: #e8edff; color: var(--brand); }
.nav .who { color: var(--muted); margin: 0 6px 0 12px; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 28px 24px 64px; }

/* hero */
.hero { text-align: center; padding: 46px 12px 34px; }
.hero h1 { font-size: 38px; line-height: 1.2; margin: 0 0 12px; letter-spacing: -0.5px; }
.hero .sub { color: var(--muted); font-size: 16px; margin: 0 auto 26px; max-width: 620px; }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* layout blocks */
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 22px; margin-bottom: 18px;
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
}
.card.narrow { max-width: 420px; margin: 40px auto; }
.card h2 { font-size: 15px; margin: 0 0 14px; font-weight: 650; }

/* buttons */
.btn {
  display: inline-block; border: 1px solid var(--brand); background: var(--brand); color: #fff;
  padding: 9px 18px; border-radius: 9px; font-size: 14px; font-weight: 550; cursor: pointer;
  transition: background 0.15s ease, transform 0.05s ease;
}
.btn:hover { background: var(--brand-dark); border-color: var(--brand-dark); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn.ghost { background: #fff; color: var(--brand); }
.btn.ghost:hover { background: #f2f4ff; }
.btn.small { padding: 5px 12px; font-size: 13px; }
.btn.full { width: 100%; margin-top: 6px; }

.link {
  border: none; background: none; color: var(--brand); cursor: pointer;
  font: inherit; padding: 0 6px;
}
.link:hover { text-decoration: underline; }
.link.danger { color: var(--bad); }
.inline { display: inline; }

/* forms */
.form { display: grid; gap: 12px; }
.form.grid2 { grid-template-columns: 1fr 1fr; }
.form label { display: grid; gap: 6px; font-size: 13px; color: #374151; font-weight: 550; }
.form label.wide { grid-column: 1 / -1; }
.form label > span code { font-size: 11.5px; padding: 1px 4px; }
.form label.check { display: flex; align-items: center; gap: 8px; font-weight: 500; }
.form input[type="text"], .form input:not([type]), .form input[type="password"], .form textarea {
  border: 1px solid var(--line); border-radius: 9px; padding: 10px 12px;
  font: inherit; background: #fff; color: var(--ink); width: 100%;
}
.form input:focus, .form textarea:focus { outline: 2px solid #c7d2fe; border-color: #a5b4fc; }
.form textarea { font-family: var(--mono); font-size: 13px; resize: vertical; line-height: 1.7; }
.form .hint { color: var(--muted); font-size: 12px; font-weight: 400; }

/* tables */
.table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.table th, .table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.table th { color: var(--muted); font-weight: 550; font-size: 12.5px; background: #fafbfc; }
.table tr:last-child td { border-bottom: none; }
.table td.right, .table th.right { text-align: right; white-space: nowrap; }
.scroll { overflow-x: auto; }

/* badges */
.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; background: #eef1f6; color: #4b5563; }
.badge.ok { background: #e7f6ec; color: var(--ok); }
.badge.bad, .badge.off { background: #fdeaea; color: var(--bad); }

/* stats */
.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-bottom: 18px; }
.stat-row.four { grid-template-columns: repeat(4, 1fr); }
.stat-row.three { grid-template-columns: repeat(3, 1fr); }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; display: grid; gap: 6px; }
.stat-label { color: var(--muted); font-size: 12.5px; }
.stat-value { font-size: 26px; font-weight: 700; letter-spacing: -0.4px; font-variant-numeric: tabular-nums; }
.stat-value.small { font-size: 15px; font-weight: 550; }
.stat-sub { color: var(--muted); font-size: 12px; }

.card.compact { padding: 12px 18px; margin-bottom: 18px; }
.livebar { display: flex; align-items: center; gap: 10px; font-size: 13px; flex-wrap: wrap; }
.livebar .grow { flex: 1; }
.dot-live { width: 8px; height: 8px; border-radius: 50%; background: #cbd5e1; display: inline-block; }
body.live .dot-live { background: var(--ok); box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.15); animation: pulse 2s infinite; }
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.card-head h2 { margin: 0; }
.card-head .muted { font-size: 12px; }
.chart { width: 100%; height: 190px; }
.chart-svg { width: 100%; height: 190px; display: block; }
.chart-svg .grid { stroke: #eef1f5; stroke-width: 1; }
.chart-svg .bar { fill: #4f6bff; opacity: 0.85; }
.chart-svg .bar:hover { opacity: 1; }
.chart-svg .axis { fill: #9aa3af; font-size: 10px; font-family: var(--mono); }

/* key reveal */
.key summary { cursor: pointer; color: var(--muted); font-size: 12.5px; }
.key .copy { margin-top: 8px; width: 240px; max-width: 100%; font-family: var(--mono); font-size: 12px; padding: 6px 8px; border: 1px solid var(--line); border-radius: 7px; }

/* misc */
.muted { color: var(--muted); }
.center { text-align: center; }
.steps { margin: 0; padding-left: 20px; color: #374151; }
.steps li { margin: 6px 0; }
.flash { padding: 11px 16px; border-radius: 10px; margin-bottom: 16px; font-size: 13.5px; }
.flash.ok { background: #e9f7ef; color: #146c43; border: 1px solid #b7e4c7; }
.flash.bad { background: #fdecec; color: #a11c1c; border: 1px solid #f5b5b5; }
pre.code {
  background: #0f172a; color: #e2e8f0; padding: 16px 18px; border-radius: 10px;
  overflow-x: auto; font-family: var(--mono); font-size: 12.5px; line-height: 1.7; margin: 0;
}
pre.code::selection { background: #334155; }
.mini { width: 110px; padding: 5px 8px; border: 1px solid var(--line); border-radius: 7px; font-size: 12.5px; }

.foot { text-align: center; color: var(--muted); font-size: 12.5px; padding: 28px 0 40px; }

.amount-up { color: var(--ok); font-variant-numeric: tabular-nums; }
.amount-down { color: var(--bad); font-variant-numeric: tabular-nums; }
.form select {
  border: 1px solid var(--line); border-radius: 9px; padding: 10px 12px;
  font: inherit; background: #fff; color: var(--ink); width: 100%;
}

.model-pick { display: flex; flex-wrap: wrap; gap: 8px; max-height: 260px; overflow-y: auto; padding: 10px; border: 1px solid var(--line); border-radius: 10px; background: #fafbfc; }
.model-pick .pick { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; font-weight: 500; color: #374151; }
.model-pick code { font-size: 12px; }
.divider { border-top: 1px dashed var(--line); padding-top: 10px; margin-top: 4px; }

.notices .notice-item { padding: 12px 0; border-bottom: 1px dashed var(--line); }
.notices .notice-item:last-child { border-bottom: none; padding-bottom: 0; }
.notice-head { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
.notice-body { color: #374151; white-space: pre-line; margin-top: 4px; font-size: 13.5px; }
.small { font-size: 12px; }
.msg-item { padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; margin-bottom: 10px; background: #fff; }
.msg-item.unread { background: #f5f8ff; border-color: #c7d2fe; }
.dot-unread { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--brand); margin-right: 6px; vertical-align: middle; }
.link.small { font-size: 12px; }

@media (max-width: 820px) {
  .cols, .stat-row, .form.grid2 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 28px; }
  .topbar { padding: 0 14px; }
  .wrap { padding: 20px 14px 48px; }
}