:root {
  --brand: #c0392b;
  --brand-dark: #96281b;
  --ink: #1f2430;
  --muted: #5b6472;
  --line: #e6e9ef;
  --bg: #f7f8fa;
  --card: #ffffff;
  --soft: #fdf1ef;
  --ok: #1e7e34;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
}

.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }

.topbar { background: #fff; border-bottom: 1px solid var(--line); }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.brand { font-weight: 800; font-size: 18px; color: var(--brand); text-decoration: none; }
.nav a { color: var(--muted); text-decoration: none; margin-left: 14px; font-size: 14px; }
.nav a:hover { color: var(--brand); }

.hero { padding: 36px 0 8px; }
.hero h1 { font-size: 28px; line-height: 1.35; margin: 0 0 10px; }
.sub { color: var(--muted); margin: 0 0 8px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  margin: 16px 0;
}
.card h2 { margin: 0 0 12px; font-size: 19px; }

.crumbs { font-size: 13px; color: var(--muted); margin: 18px 0 6px; }
.crumbs a { color: var(--muted); }
h1 { font-size: 26px; line-height: 1.35; margin: 6px 0 10px; }

.tool-form { display: flex; flex-wrap: wrap; gap: 14px; align-items: end; }
.tool-form label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
.tool-form select, .tool-form input {
  font-size: 15px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: #fff; min-width: 90px;
}
.btn-primary {
  background: var(--brand); color: #fff; border: 0; border-radius: 8px;
  padding: 10px 18px; font-size: 15px; font-weight: 600; cursor: pointer;
}
.btn-primary:hover { background: var(--brand-dark); }

.notice { margin-top: 12px; padding: 10px 12px; border-radius: 8px; background: #fff7e6; border: 1px solid #ffe1a8; color: #8a6100; font-size: 14px; }

.plans { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; margin-top: 14px; }
.plan { border: 1px solid var(--line); border-radius: 12px; padding: 14px; background: #fff; display: flex; flex-direction: column; gap: 6px; }
.plan-ratio { font-size: 24px; font-weight: 800; color: var(--brand); }
.plan-range { font-size: 14px; font-weight: 600; }
.plan-leave { font-size: 13px; color: var(--muted); }
.plan-meta { display: flex; flex-wrap: wrap; gap: 6px; }
.pill { background: var(--soft); color: var(--brand-dark); border-radius: 999px; padding: 2px 10px; font-size: 12px; }
.pill-soft { background: #eef3ff; color: #2c4a9a; }
.copy-btn {
  margin-top: 6px; align-self: flex-start; background: #fff; color: var(--brand);
  border: 1px solid var(--brand); border-radius: 8px; padding: 6px 12px; font-size: 13px; cursor: pointer;
}
.copy-btn:hover { background: var(--soft); }
.copy-btn.copied { color: var(--ok); border-color: var(--ok); }

.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th, .table td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); }
.table th { color: var(--muted); font-weight: 600; background: #fafbfc; }

.bujia-list { margin: 0; padding-left: 20px; }
.bujia-list li { margin: 4px 0; }
.upcoming { margin: 0; padding-left: 20px; }
.upcoming li { margin: 6px 0; }

.legend { display: flex; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.chip { font-size: 12px; border-radius: 6px; padding: 2px 10px; border: 1px solid var(--line); }
.chip-hd { background: var(--soft); color: var(--brand-dark); border-color: #f2c4bc; }
.chip-we { background: #f2f4f7; color: var(--muted); }
.chip-bj { background: #fff7e6; color: #8a6100; border-color: #ffe1a8; }

.cal-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 14px; }
.cal-month { border-collapse: collapse; width: 100%; font-size: 12px; }
.cal-month caption { font-weight: 700; margin-bottom: 6px; font-size: 13px; }
.cal-month th { color: var(--muted); font-weight: 600; padding: 3px 0; }
.cal-month th.we { color: #a07; opacity: .65; }
.cal-month td { text-align: center; padding: 4px 0; border-radius: 6px; }
.cal-month td.hd { background: var(--soft); color: var(--brand-dark); font-weight: 700; }
.cal-month td.we { background: #f2f4f7; color: var(--muted); }
.cal-month td.bj { background: #fff7e6; color: #8a6100; font-weight: 700; text-decoration: underline; }
.cal-month td.empty { background: transparent; }

.faq { border-bottom: 1px solid var(--line); padding: 8px 0; }
.faq summary { cursor: pointer; font-weight: 600; font-size: 15px; }
.faq p { color: var(--muted); margin: 8px 0 4px; font-size: 14px; }

.links p { margin: 0; }
.links a { color: var(--brand); }

.footer { border-top: 1px solid var(--line); margin-top: 32px; background: #fff; }
.footer .wrap { padding: 18px 16px 26px; }
.footer p { font-size: 12.5px; color: var(--muted); margin: 6px 0; }
.footer a { color: var(--muted); }

@media (max-width: 640px) {
  .hero h1 { font-size: 22px; }
  h1 { font-size: 22px; }
  .topbar-inner { flex-direction: column; height: auto; padding: 10px 0; gap: 6px; }
  .tool-form { gap: 10px; }
}