/* online：70/30 流式双栏 —— 主栏文章流 + 侧栏检查卡（非 sticky） */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  font-family: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #e0f7fa;
  color: #263238;
  line-height: 1.72;
}

svg {
  display: block;
}

a {
  color: #006064;
}

.head {
  background: #263238;
  color: #e0f7fa;
}

.head-in {
  width: min(1180px, calc(100% - 28px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  align-items: center;
  min-height: 62px;
  padding: 8px 0;
}

.logo {
  color: #80deea;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.menu {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 14px;
  font-size: 0.86rem;
}

.menu a {
  color: #e0f7fa;
  text-decoration: none;
}

.menu a:hover {
  color: #80deea;
}

.shell {
  width: min(1180px, calc(100% - 28px));
  margin: 0 auto;
  padding: 28px 0 48px;
  display: grid;
  grid-template-columns: 7fr 3fr;
  gap: 28px;
  align-items: start;
}

.main {
  min-width: 0;
}

.hero {
  background: #004d40;
  color: #e0f7fa;
  padding: 22px 22px 12px;
  margin-bottom: 22px;
}

.hero .meta {
  margin: 0 0 8px;
  font-size: 0.8rem;
  color: #80deea;
}

.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(1.45rem, 2.1vw, 1.95rem);
  line-height: 1.35;
  color: #fff;
}

.hero p {
  margin: 0 0 12px;
}

h2 {
  margin: 0 0 12px;
  font-size: 1.28rem;
  color: #004d40;
}

.chunk {
  background: #fff;
  padding: 20px 20px 10px;
  margin-bottom: 18px;
}

.chunk p {
  margin: 0 0 12px;
}

.times {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 12px 0 8px;
}

.time {
  background: #e0f7fa;
  padding: 12px 12px 6px;
  border-bottom: 4px solid #006064;
}

.time .ico {
  width: 24px;
  height: 24px;
  margin-bottom: 8px;
}

.time .ico svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: #006064;
  stroke-width: 1.7;
}

.time h3 {
  margin: 0 0 8px;
  font-size: 0.98rem;
}

.time p {
  font-size: 0.9rem;
}

.steps {
  display: flex;
  flex-direction: column;
  margin: 12px 0 8px;
  padding: 0;
  list-style: none;
  border-left: 3px solid #80deea;
}

.steps li {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 10px;
  padding: 10px 0 10px 12px;
}

.steps .no {
  width: 28px;
  height: 28px;
  background: #006064;
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  font-weight: 700;
}

.wide {
  overflow-x: auto;
  margin: 12px 0 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

th,
td {
  border: 1px solid #80deea;
  padding: 9px 11px;
  text-align: left;
  vertical-align: top;
}

th {
  background: #006064;
  color: #e0f7fa;
}

.avoid {
  margin: 10px 0 8px;
  padding: 0;
  list-style: none;
}

.avoid li {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid #b2ebf2;
}

.avoid .ico svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: #006064;
  stroke-width: 1.7;
}

.qbox {
  border-top: 1px solid #b2ebf2;
  padding: 12px 0 4px;
}

.qbox h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
  color: #006064;
}

.aside {
  min-width: 0;
}

.card {
  background: #fff;
  border: 2px solid #006064;
  padding: 16px 16px 10px;
}

.card .tag {
  margin: 0 0 8px;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: #006064;
}

.card h2 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.card ol {
  margin: 0 0 10px;
  padding-left: 18px;
}

.card li {
  margin: 0 0 8px;
  font-size: 0.92rem;
}

.card p {
  margin: 0 0 10px;
  font-size: 0.9rem;
}

.note {
  background: #004d40;
  color: #e0f7fa;
  padding: 12px 12px 4px;
  margin-top: 14px;
}

.note p {
  font-size: 0.86rem;
}

.sitefoot {
  background: #263238;
  color: #e0f7fa;
  padding: 24px 0 32px;
  font-size: 0.9rem;
}

.sitefoot-in {
  width: min(1180px, calc(100% - 28px));
  margin: 0 auto;
}

.sitefoot h2,
.foot-k {
  color: #80deea;
  font-size: 0.98rem;
}

.sitefoot p {
  margin: 0 0 10px;
  max-width: 56em;
}

.rights {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid #546e7a;
  color: #80deea;
}

@media (max-width: 900px) {
  .head-in {
    grid-template-columns: 1fr;
  }

  .menu {
    justify-content: flex-start;
  }

  .shell {
    grid-template-columns: 1fr;
  }

  .times {
    grid-template-columns: 1fr;
  }
}