:root {
  --ink: #1c2333;
  --muted: #5c6578;
  --line: #d9deea;
  --bg: #f4f6fb;
  --card: #ffffff;
  --brand: #163a5f;
  --accent: #1f6f8b;
  --ok: #1b7f4c;
  --warn: #8a5a12;
  --alert: #9b2c2c;
  --alert-bg: #fdecec;
  --ok-bg: #e8f7ee;
  --warn-bg: #fff6e5;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1.4rem;
  background: var(--brand);
  color: #fff;
}
.brand a { color: #fff; font-weight: 700; font-size: 1.15rem; text-decoration: none; }
.brand .sub { display: block; font-size: 0.78rem; opacity: 0.8; }
.topbar nav { display: flex; align-items: center; gap: 0.8rem; }
.topbar nav a { color: #fff; }
.topbar nav a.primary, .btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 8px;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
  font: inherit;
  text-decoration: none;
}
.topbar nav a.primary:hover, .btn:hover { filter: brightness(1.08); text-decoration: none; }
.logout { margin: 0; }
.logout button {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: 8px;
  padding: 0.35rem 0.7rem;
  cursor: pointer;
  font: inherit;
}
.wrap { max-width: 960px; margin: 1.4rem auto; padding: 0 1rem 3rem; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.3rem 1.4rem 1.6rem;
  box-shadow: 0 1px 2px rgba(22, 58, 95, 0.04);
}
.login-card { max-width: 420px; margin: 2rem auto; }
h1 { margin: 0 0 0.6rem; font-size: 1.4rem; }
h2 { margin: 1.3rem 0 0.5rem; font-size: 1.05rem; color: var(--brand); }
h3 { margin: 0 0 0.35rem; font-size: 0.98rem; }
.muted { color: var(--muted); }
.stack { display: flex; flex-direction: column; gap: 0.8rem; }
label { display: flex; flex-direction: column; gap: 0.3rem; font-weight: 600; }
input, select {
  font: inherit;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}
input.qty { width: 5.5rem; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; }
.preview { grid-column: 1 / -1; margin: 0; color: var(--muted); }
.table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.table th, .table td { text-align: left; padding: 0.45rem 0.4rem; border-bottom: 1px solid var(--line); vertical-align: middle; }
.row-between { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.alert { background: var(--alert-bg); color: var(--alert); padding: 0.7rem 0.8rem; border-radius: 8px; }
.ok { background: var(--ok-bg); color: var(--ok); padding: 0.7rem 0.8rem; border-radius: 8px; }
.warn { color: var(--warn); background: var(--warn-bg); padding: 0.6rem 0.7rem; border-radius: 8px; }
.estimate { border: 1px dashed var(--line); border-radius: 10px; padding: 0.8rem 1rem; }
.estimate ul { margin: 0.2rem 0 0.5rem; padding-left: 1.1rem; }
.kv { display: grid; grid-template-columns: 7rem 1fr; gap: 0.35rem 0.8rem; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }
.tag { display: inline-block; border-radius: 999px; padding: 0.1rem 0.55rem; font-size: 0.8rem; background: #e8edf5; }
.tag-pending { background: #fff3d6; color: #7a4d00; }
.tag-claimed { background: #e3edff; color: #1a3f8a; }
.tag-written { background: var(--ok-bg); color: var(--ok); }
.foot { text-align: center; color: var(--muted); font-size: 0.8rem; padding: 0 1rem 2rem; }
@media (max-width: 700px) {
  .grid-2, .kv { grid-template-columns: 1fr; }
  .topbar { flex-direction: column; align-items: flex-start; }
  .table { font-size: 0.85rem; }
}