:root {
  --slate: #334155;
  --paper: #fff7ed;
  --ink: #1c1917;
  --muted: #57534e;
  --line: #e7d5c2;
  --warn: #b45309;
  --ok: #3f6212;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Iowan Old Style", "Palatino Linotype", "Source Han Serif SC", "SimSun", serif;
  line-height: 1.78;
}

a { color: #1e293b; }

.slate {
  background: var(--slate);
  color: #f8fafc;
  padding: 1.1rem 6vw 1.2rem;
}

.slate .brand {
  display: block;
  font-family: "Segoe UI", "PingFang SC", sans-serif;
  font-weight: 700;
  color: #f8fafc;
  text-decoration: none;
  margin-bottom: 0.7rem;
}

.slate nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.2rem;
  font-family: "Segoe UI", "PingFang SC", sans-serif;
  font-size: 0.88rem;
}

.slate nav a { color: #e2e8f0; text-decoration: none; }
.slate nav a:hover { text-decoration: underline; }

.hero { padding: 2.2rem 6vw 0.6rem; max-width: 44rem; }
.hero p { color: var(--muted); }
.hero time { font-size: 0.85rem; color: var(--warn); }

.risks { margin: 1.2rem 6vw 1.8rem; }

.risk {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 0.8rem;
  margin: 0.55rem 0;
  background: #fff;
  border: 1px solid var(--line);
}

.risk b {
  background: #ffedd5;
  color: var(--warn);
  padding: 0.8rem 0.7rem;
  font-family: "Segoe UI", sans-serif;
}

.risk p { margin: 0.7rem 0.8rem 0.7rem 0; }

.shields,
.leave,
.dual,
.tbl,
.cache,
.faq {
  margin: 0 6vw 1.9rem;
}

.shields ul {
  list-style: none;
  padding: 0;
}

.shields li {
  display: grid;
  grid-template-columns: 1.8rem 1fr;
  gap: 0.6rem;
  padding: 0.55rem 0;
  border-bottom: 1px dashed var(--line);
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 0;
  margin: 1rem 0;
  counter-reset: ticket;
}

.steps li {
  list-style: none;
  background: #fff;
  border: 1px solid var(--line);
  padding: 0.75rem 0.9rem 0.75rem 3.2rem;
  position: relative;
}

.steps li::before {
  counter-increment: ticket;
  content: counter(ticket);
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2.2rem;
  background: var(--slate);
  color: #fff7ed;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Segoe UI", sans-serif;
}

.pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--line);
}

.pair article { padding: 1rem 1.1rem; background: #fff; }
.pair article:first-child { border-right: 1px solid var(--line); }
.pair h3 { font-family: "Segoe UI", sans-serif; margin-top: 0; }
.pair .hang h3 { color: var(--warn); }
.pair .off h3 { color: var(--ok); }

table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  font-size: 0.95rem;
}

th, td {
  border: 1px solid var(--line);
  padding: 0.6rem 0.7rem;
  text-align: left;
  vertical-align: top;
}

th { background: var(--slate); color: #fff7ed; font-family: "Segoe UI", sans-serif; }

.faq details {
  background: #fff;
  border: 1px solid var(--line);
  margin-bottom: 0.5rem;
  padding: 0.55rem 0.8rem;
}

summary { cursor: pointer; font-weight: 700; }

.foot {
  background: var(--slate);
  color: #e2e8f0;
  padding: 1.5rem 6vw 2rem;
  font-family: "Segoe UI", "PingFang SC", sans-serif;
  font-size: 0.9rem;
}

.foot p { margin: 0 0 0.5rem; }

@media (max-width: 800px) {
  .risk, .pair { grid-template-columns: 1fr; }
  .pair article:first-child { border-right: 0; border-bottom: 1px solid var(--line); }
}