* { box-sizing: border-box; }
body {
  margin: 0;
  background: #e8eef2;
  color: #12202c;
  font-family: "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
}
.slim {
  background: #12202c;
  color: #e8eef2;
  padding: 10px 0;
}
.slim-box {
  width: min(1200px, calc(100% - 20px));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.slim a.brand {
  color: #e8eef2;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.06em;
}
.slim nav a {
  color: #9db0be;
  text-decoration: none;
  margin-left: 16px;
  font-size: 0.92rem;
}
body.q-home .slim nav a.x,
body.q-get .slim nav a.y,
body.q-zh .slim nav a.z,
.slim nav a.now { color: #7fdbda; }

.frame {
  width: min(1200px, calc(100% - 20px));
  margin: 18px auto 40px;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 22px;
  align-items: start;
}
.rail {
  position: sticky;
  top: 12px;
  background: #fff;
  border: 1px solid #c5d2db;
  padding: 14px 14px 8px;
}
.rail p { margin: 0 0 8px; font-size: 0.8rem; color: #5d717f; }
.rail a {
  display: block;
  color: #0d7377;
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 1px dashed #d5e0e6;
  font-size: 0.88rem;
}
.canvas { min-width: 0; }
.thin {
  background: #fff;
  border-top: 6px solid #0d7377;
  padding: 22px 24px;
}
.thin h1 { margin: 0 0 10px; font-size: 1.7rem; }
.row-btn { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.go, .go2 {
  display: inline-block;
  padding: 11px 16px;
  text-decoration: none;
  font-weight: 700;
}
.go { background: #0d7377; color: #fff; }
.go2 { background: #12202c; color: #fff; }
.card {
  background: #fff;
  margin-top: 14px;
  padding: 18px 22px;
  border: 1px solid #c5d2db;
}
.card h2 { margin: 0 0 8px; color: #0d7377; font-size: 1.2rem; }
.ask {
  background: #f3f8f8;
  border-left: 4px solid #0d7377;
  padding: 10px 12px;
  margin: 12px 0;
}
.ask strong { display: block; margin-bottom: 4px; }
table.qa { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
table.qa th, table.qa td { border: 1px solid #c5d2db; padding: 8px; }
.bang { background: #fff4f1; border: 2px solid #c45c3e; }
.bang h2 { color: #8f331c; }
.tail {
  background: #12202c;
  color: #9db0be;
  padding: 24px 0;
  font-size: 0.88rem;
}
.tail-box { width: min(1200px, calc(100% - 20px)); margin: 0 auto; }
.tail a { color: #7fdbda; margin-right: 12px; }
.intro-ask { margin-top: 14px; }
.intro-ask .card { margin-top: 14px; }
@media (max-width: 860px) {
  .frame { grid-template-columns: 1fr; }
  .rail { position: static; }
}