:root {
  color-scheme: light;
  --paper: #f3efe6;
  --ink: #1d1a16;
  --muted: #6d655b;
  --line: #ddd4c4;
  --panel: #fffdf8;
  --risk: #8d2a2a;
  --risk-bg: #f8e8e4;
  --ok: #1d5c45;
  --warn: #8a5a12;
  --accent: #243e5a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 15px/1.5 "Source Han Sans SC", "Noto Sans SC", "PingFang SC", sans-serif;
}

a { color: var(--accent); }

header.top {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  padding: 18px 28px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

header.top strong { font-size: 18px; letter-spacing: 0.04em; }

nav { display: flex; gap: 16px; flex-wrap: wrap; }

nav a { text-decoration: none; color: var(--ink); }

nav a.current { border-bottom: 2px solid var(--accent); }

main { padding: 24px 28px 64px; max-width: 1180px; }

h1 { font-size: 28px; font-weight: 560; margin: 0 0 8px; }

h2 { font-size: 18px; margin: 28px 0 10px; }

.lead { color: var(--muted); max-width: 760px; }

.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }

.card, .panel, table, .flash {
  background: var(--panel);
  border: 1px solid var(--line);
}

.card { padding: 14px 16px; }
.card span { display: block; color: var(--muted); font-size: 13px; }
.card b { font-size: 26px; font-variant-numeric: tabular-nums; }

.risk-card { background: var(--risk-bg); border-color: #e2c2ba; }
.risk-card b { color: var(--risk); }

.panel { padding: 16px 18px; margin-top: 16px; }

table { width: 100%; border-collapse: collapse; margin-top: 8px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 560; font-size: 13px; }
table.freeze-head { border-collapse: separate; border-spacing: 0; }
table.freeze-head thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--panel);
  box-shadow: inset 0 -1px 0 var(--line);
}
table.bill th,
table.bill td,
.tag { white-space: nowrap; }
td { font-variant-numeric: tabular-nums; }

.tag {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 999px;
  font-size: 12px;
  border: 1px solid var(--line);
}
tr.marked { background: var(--risk-bg); }
.tag.risk { color: var(--risk); background: var(--risk-bg); border-color: #e2c2ba; }
.tag.warn { color: var(--warn); }
.tag.ok { color: var(--ok); }

form.inline { display: flex; gap: 8px; flex-wrap: wrap; align-items: end; }
label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
input, select, button, textarea {
  font: inherit;
  color: var(--ink);
  background: white;
  border: 1px solid #cfc5b4;
  padding: 7px 9px;
}
button, .button {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
button.quiet, .button.quiet { background: white; color: var(--ink); }
.flash { padding: 10px 12px; margin-bottom: 12px; }
.gap { color: var(--warn); }
.login { max-width: 420px; margin: 10vh auto; }
.muted { color: var(--muted); }
code { font-family: ui-monospace, monospace; }

@media (max-width: 800px) {
  .grid { grid-template-columns: 1fr 1fr; }
  header.top, main { padding-left: 16px; padding-right: 16px; }
}