* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #f3faf8;
  color: #042f2e;
  line-height: 1.65;
}
.lid-mast {
  position: sticky;
  top: 0;
  z-index: 30;
  background: #042f2e;
  color: #ecfdf5;
}
.lid-mast-in {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0.7rem 1.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.lid-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.lid-brand svg { color: #5eead4; }
.lid-nav { display: flex; flex-wrap: wrap; gap: 0.85rem; }
.lid-nav a {
  color: #ccfbf1;
  text-decoration: none;
  font-size: 0.92rem;
}
.lid-nav a:hover { color: #fff; }
.lid-main { max-width: 1120px; margin: 0 auto; padding: 0 1.2rem 3rem; }
.lid-hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1.6rem;
  padding: 2.2rem 0 1.4rem;
  align-items: start;
}
.lid-copy h1 { font-size: 1.85rem; line-height: 1.35; margin-bottom: 0.9rem; }
.lid-copy p { margin-bottom: 0.55rem; color: #134e4a; }
.lid-viz { display: flex; flex-direction: column; gap: 0.7rem; }
.lid-viz-card {
  background: #0f766e;
  color: #ecfdf5;
  border-radius: 16px;
  padding: 0.9rem 1rem;
  display: grid;
  grid-template-columns: 36px 1fr;
  grid-template-rows: auto auto;
  column-gap: 0.7rem;
}
.lid-viz-card svg { grid-row: 1 / span 2; align-self: center; }
.lid-viz-card span { font-size: 0.8rem; opacity: 0.85; }
.lid-viz-card b { font-size: 1.05rem; }
.lid-viz-mid { background: #115e59; }
.lid-block { margin: 1.8rem 0; }
.lid-block > h2 { font-size: 1.28rem; margin-bottom: 0.55rem; }
.lid-block > p { margin-bottom: 0.9rem; color: #115e59; }
.lid-trio, .lid-pair {
  display: grid;
  gap: 0.9rem;
}
.lid-trio { grid-template-columns: repeat(3, 1fr); }
.lid-pair { grid-template-columns: 1fr 1fr; }
.lid-tile {
  background: #fff;
  border-radius: 16px;
  padding: 1rem 1.05rem 1.1rem;
  box-shadow: 0 8px 24px rgba(4, 47, 46, 0.06);
}
.lid-tile svg { color: #0f766e; margin-bottom: 0.35rem; }
.lid-tile h3 { font-size: 1.02rem; margin-bottom: 0.4rem; }
.lid-tile p { margin-bottom: 0.4rem; font-size: 0.95rem; }
.lid-pills {
  list-style: none;
  display: flex;
  gap: 0.65rem;
  overflow-x: auto;
  padding-bottom: 0.4rem;
}
.lid-pills li {
  flex: 1 0 180px;
  background: #fff;
  border-radius: 999px;
  padding: 0.85rem 0.95rem;
  display: flex;
  gap: 0.55rem;
  align-items: flex-start;
  border: 1px solid #99f6e4;
}
.lid-pills em {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #0f766e;
  color: #fff;
  display: grid;
  place-items: center;
  font-style: normal;
  font-weight: 700;
  flex-shrink: 0;
}
.lid-pills strong { display: block; font-size: 0.92rem; margin-bottom: 0.2rem; }
.lid-pills p { font-size: 0.86rem; margin-bottom: 0.25rem; }
.lid-sheet-wrap { overflow-x: auto; }
.lid-sheet {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
}
.lid-sheet th, .lid-sheet td {
  border: 1px solid #ccfbf1;
  padding: 0.75rem 0.8rem;
  text-align: left;
  vertical-align: top;
  font-size: 0.94rem;
}
.lid-sheet th { background: #0f766e; color: #ecfdf5; }
.lid-cap {
  background: #042f2e;
  color: #ecfdf5;
  border-radius: 16px;
  padding: 1.2rem 1.3rem 1.4rem;
  margin: 2rem 0;
}
.lid-cap h2 { font-size: 1.2rem; margin-bottom: 0.9rem; }
.lid-cap-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.lid-cap-row h3 { font-size: 1rem; margin: 0.35rem 0 0.35rem; }
.lid-cap-row p { font-size: 0.94rem; margin-bottom: 0.35rem; color: #ccfbf1; }
.lid-item {
  background: #fff;
  border-radius: 16px;
  margin-bottom: 0.55rem;
  border: 1px solid #99f6e4;
}
.lid-sum { cursor: pointer; padding: 0.8rem 1rem; font-weight: 600; }
.lid-ans { padding: 0 1rem 0.9rem; color: #115e59; }
.site-footer {
  background: #042f2e;
  color: #99f6e4;
  padding: 1.4rem 1.2rem;
  text-align: center;
  font-size: 0.86rem;
}
.site-footer p { margin-bottom: 0.3rem; }
@media (max-width: 860px) {
  .lid-hero, .lid-trio, .lid-pair, .lid-cap-row { grid-template-columns: 1fr; }
  .lid-mast-in { flex-direction: column; align-items: flex-start; }
}