:root {
  --paper: #efe8db;
  --paper-2: #e6ddcc;
  --ink: #1c1915;
  --ink-2: #3a342c;
  --muted: #6f675c;
  --rule: rgba(28, 25, 21, 0.14);
  --copper: #c45c2a;
  --olive: #2f3d32;
  --danger: #8a2f24;
  --sans: "IBM Plex Sans", "Noto Sans SC", "PingFang SC", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--paper); color: var(--ink); font: 14px/1.55 var(--sans); }
a { color: inherit; }
a:hover { color: var(--copper); }
.top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.7rem 1.2rem; border-bottom: 1px solid var(--rule);
  background: color-mix(in srgb, var(--paper) 90%, white);
  position: sticky; top: 0; z-index: 5;
}
.top::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px; background: var(--copper); }
.brand { font-weight: 600; letter-spacing: -0.03em; text-decoration: none; }
.nav { display: flex; gap: 1rem; }
.nav a { text-decoration: none; }
.nav a[aria-current="page"] { color: var(--copper); text-decoration: underline; text-underline-offset: 0.25em; }
.wrap { width: min(1120px, calc(100% - 2rem)); margin: 1.2rem auto 2.4rem; }
h1 { font-size: 1.45rem; margin: 0 0 0.8rem; letter-spacing: -0.03em; }
h2 { font-size: 1.1rem; margin: 1.4rem 0 0.6rem; }
.muted { color: var(--muted); }
.grid { display: grid; gap: 0.8rem; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: 1fr 1fr; }
.card { border: 1px solid var(--rule); background: color-mix(in srgb, var(--paper) 70%, white); padding: 0.9rem 1rem; }
.stat { font-size: 1.6rem; font-weight: 600; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 0.5rem 0.4rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); font-weight: 500; }
.btn {
  display: inline-flex; align-items: center; min-height: 2.2rem; padding: 0.3rem 0.75rem;
  border: 1px solid var(--ink); background: var(--ink); color: var(--paper);
  text-decoration: none; font: inherit; cursor: pointer;
}
.btn-ghost { background: transparent; color: var(--ink); }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }
label { display: block; font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin: 0.55rem 0 0.25rem; }
input, textarea, select {
  width: 100%; border: 1px solid var(--rule); background: #fffdf8; color: var(--ink);
  font: inherit; padding: 0.45rem 0.55rem;
}
textarea { min-height: 6rem; }
.flash { padding: 0.55rem 0.7rem; border: 1px solid var(--copper); margin-bottom: 0.8rem; }
.err { color: var(--danger); }
.pill { display: inline-block; font-size: 0.75rem; border: 1px solid var(--rule); padding: 0.05rem 0.4rem; }
.login { max-width: 26rem; margin: 12vh auto; }
.mail { border-top: 1px solid var(--rule); padding: 0.9rem 0; }
.mail h3 { margin: 0 0 0.3rem; font-size: 1rem; }
iframe.mail-body { width: 100%; min-height: 240px; border: 1px solid var(--rule); background: white; }
@media (max-width: 800px) {
  .grid-4, .grid-2 { grid-template-columns: 1fr; }
  .nav { gap: 0.6rem; font-size: 0.9rem; }
}