/* pc: editorial desk — sand canvas + 2x3 + matrix, not tool/band/circle */
html {
  scroll-behavior: auto;
}

body {
  margin: 0;
  background: #F5F0E6;
  color: #3E2723;
  font-family: Georgia, "Songti SC", "SimSun", "Noto Serif SC", serif;
  line-height: 1.8;
}

.sitehead {
  background: #1B5E20;
  color: #F5F0E6;
  text-align: center;
  padding: 18px 16px 0;
}

.sitehead .mark {
  display: block;
  font-family: "Palatino Linotype", Palatino, "Songti SC", serif;
  font-size: 1.25rem;
  letter-spacing: 0.12em;
  padding-bottom: 10px;
}

.sitehead nav {
  background: #33691E;
  margin: 0;
}

.sitehead ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}

.sitehead a {
  display: block;
  padding: 10px 14px;
  color: #E8DDBE;
  text-decoration: none;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 0.88rem;
}

.sitehead a:hover {
  background: #1B5E20;
  color: #FFFFFF;
}

.sand-hero {
  background: #E8DDBE;
  padding: 40px 8vw 36px;
}

.sand-hero h1 {
  margin: 0 auto 16px;
  max-width: 18em;
  font-size: 2.05rem;
  line-height: 1.4;
  font-weight: 600;
  text-align: center;
}

.sand-hero p {
  margin: 0 auto 12px;
  max-width: 42em;
}

.chapter {
  width: min(1040px, calc(100% - 36px));
  margin: 36px auto;
}

.chapter h2 {
  margin: 0 0 14px;
  padding-left: 14px;
  border-left: 8px solid #1B5E20;
  font-size: 1.4rem;
  font-weight: 600;
}

.chapter > p {
  margin: 0 0 12px;
}

.mosaic {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 14px;
  margin-top: 16px;
}

.mosaic article {
  background: #FFFFFF;
  padding: 16px 16px 14px;
  box-shadow: 0 1px 0 #E8DDBE;
}

.mosaic svg {
  width: 32px;
  height: 32px;
  stroke: #33691E;
  fill: none;
  stroke-width: 1.6;
}

.mosaic h3 {
  margin: 8px 0 6px;
  font-size: 1.05rem;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
}

.mosaic p {
  margin: 0;
  font-size: 0.95rem;
}

.matrix {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 8px;
  background: #FFFFFF;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 0.92rem;
}

.matrix caption {
  caption-side: bottom;
  padding-top: 8px;
  color: #5D4037;
  text-align: left;
}

.matrix th,
.matrix td {
  border: 1px solid #E8DDBE;
  padding: 10px 11px;
  vertical-align: top;
  text-align: left;
}

.matrix thead th {
  background: #1B5E20;
  color: #F5F0E6;
}

.matrix tbody th {
  background: #E8DDBE;
  width: 22%;
}

.place {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: desk;
}

.place li {
  position: relative;
  margin: 0 0 14px;
  padding: 16px 18px 14px 72px;
  background: #FFFFFF;
  border-bottom: 3px solid #33691E;
}

.place li::before {
  counter-increment: desk;
  content: counter(desk);
  position: absolute;
  left: 18px;
  top: 16px;
  width: 36px;
  height: 36px;
  background: #E8DDBE;
  color: #1B5E20;
  font-weight: 700;
  font-family: "Segoe UI", sans-serif;
  text-align: center;
  line-height: 36px;
}

.place h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
}

.place p {
  margin: 0;
}

.signals {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-top: 16px;
}

.signals article {
  padding: 18px 20px;
}

.signals article:first-child {
  background: #FFFFFF;
  border-right: 4px solid #1B5E20;
}

.signals article:last-child {
  background: #E8DDBE;
}

.signals h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
}

.signals ul {
  margin: 0;
  padding-left: 1.2em;
}

.signals li {
  margin: 0 0 8px;
}

.ask {
  background: #FFFFFF;
  padding: 8px 22px 22px;
}

.ask h2 {
  margin: 16px 0 10px;
}

.ask dl {
  margin: 0;
}

.ask dt {
  margin: 16px 0 6px;
  font-weight: 700;
  color: #1B5E20;
}

.ask dd {
  margin: 0;
}

.endnote {
  background: #3E2723;
  color: #F5F0E6;
  padding: 28px 8vw 32px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
}

.endnote p {
  margin: 0 0 8px;
  font-size: 0.9rem;
}

@media (max-width: 860px) {
  .sand-hero h1 { font-size: 1.55rem; }
  .mosaic { grid-template-columns: 1fr; }
  .signals { grid-template-columns: 1fr; }
  .signals article:first-child { border-right: 0; border-bottom: 4px solid #1B5E20; }
}