* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: auto;
}

body {
  background: #F7F1E3;
  color: #2B2118;
  font-family: Georgia, "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif;
  line-height: 1.85;
  font-size: 17px;
}

a {
  color: inherit;
  text-decoration: none;
}

svg {
  display: block;
}

.masthead {
  background: #efe6d2;
  border-bottom: 2px solid #2B2118;
  padding: 22px 20px 16px;
  text-align: center;
}

.brand {
  font-size: 22px;
  letter-spacing: 0.18em;
  color: #8C4A2F;
  font-weight: 700;
}

.masthead nav {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 18px;
}

.masthead nav a {
  font-size: 14px;
  color: #2B2118;
  border-bottom: 1px dotted #8C4A2F;
}

.masthead nav a:hover {
  color: #8C4A2F;
}

.sheet {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 22px;
}

.hero {
  text-align: center;
  padding: 34px 22px 10px;
}

.hero h1 {
  font-size: 30px;
  line-height: 1.4;
  color: #2B2118;
}

.hero p {
  margin: 14px auto 0;
  max-width: 40em;
  color: #4a3b30;
}

.tape {
  display: flex;
  gap: 0;
  margin: 22px auto 8px;
  max-width: 980px;
  padding: 0 18px;
  background: #e9dfc8;
  border-top: 1px dashed #8C4A2F;
  border-bottom: 1px dashed #8C4A2F;
}

.tape-item {
  flex: 1;
  padding: 16px 12px;
  text-align: center;
  border-right: 1px dashed #8C4A2F;
}

.tape-item:last-child {
  border-right: none;
}

.tape-num {
  display: inline-block;
  min-width: 1.6em;
  color: #8C4A2F;
  font-weight: 700;
}

.tape-item p {
  margin-top: 4px;
  font-size: 15px;
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
  max-width: 980px;
  margin: 28px auto 8px;
  padding: 0 18px;
}

.icon-card {
  background: #fffaf0;
  border: 1px solid #d8cbb0;
  border-radius: 4px;
  padding: 18px 16px 16px;
}

.icon-card svg {
  width: 32px;
  height: 32px;
  stroke: #8C4A2F;
  fill: none;
  stroke-width: 1.5;
  margin-bottom: 10px;
}

.icon-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
  color: #8C4A2F;
}

.icon-card p {
  font-size: 15px;
}

.section {
  padding: 34px 0 8px;
}

.section h2 {
  font-size: 23px;
  color: #8C4A2F;
  margin-bottom: 12px;
}

.section p {
  margin-bottom: 12px;
}

.dash-steps {
  margin: 16px 0 8px;
}

.dash-step {
  border-bottom: 1px dashed #8C4A2F;
  padding: 14px 4px 14px 0;
}

.dash-step strong {
  color: #8C4A2F;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin: 16px 0 8px;
}

.split-col {
  background: #fffaf0;
  border: 1px solid #d8cbb0;
  border-radius: 4px;
  padding: 18px 16px;
}

.split-col h3 {
  font-size: 17px;
  margin-bottom: 10px;
  color: #8C4A2F;
}

.split-col p {
  margin-bottom: 10px;
}

.faq-board {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}

.faq-card {
  background: #fffdf7;
  border-radius: 4px;
  box-shadow: 3px 4px 0 rgba(43, 33, 24, 0.12), 0 1px 0 #d8cbb0;
  border: 1px solid #d8cbb0;
  padding: 16px 16px 14px;
}

.faq-card h3 {
  font-size: 16px;
  color: #8C4A2F;
  margin-bottom: 8px;
}

.foot {
  margin-top: 40px;
  background: #2B2118;
  color: #efe6d2;
  padding: 32px 22px 24px;
}

.foot-inner {
  max-width: 880px;
  margin: 0 auto;
}

.foot h3 {
  color: #f3d6c4;
  font-size: 16px;
  margin: 16px 0 6px;
}

.foot h3:first-child {
  margin-top: 0;
}

.foot p {
  font-size: 14px;
}

.foot .mark {
  margin-top: 18px;
  font-size: 13px;
  color: #c9b8a3;
}

@media (max-width: 800px) {
  .tape,
  .card-grid,
  .split,
  .faq-board {
    grid-template-columns: 1fr;
  }

  .tape {
    flex-direction: column;
  }

  .tape-item {
    border-right: none;
    border-bottom: 1px dashed #8C4A2F;
  }

  .hero h1 {
    font-size: 24px;
  }
}