/* 第1套：浅顶栏 + 左文右示意 + 三列卡 + 横步骤 + 双栏 + 表 + 边界卡 */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: auto; }
body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #111B21;
  background: #fff;
  line-height: 1.7;
  font-size: 16px;
}
img { max-width: 100%; }
a { color: inherit; text-decoration: none; }
.mast-light a:hover,
.jump-list a:hover,
.foot-col a:hover {
  color: #25D366;
}

.mast-light {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 36px;
  background: #fff;
  border-bottom: 1px solid #ECE5DD;
  position: sticky;
  top: 0;
  z-index: 8;
}
.mark-lock {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: #075E54;
  white-space: nowrap;
}
.mark-lock svg { display: block; }
.jump-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  list-style: none;
  font-size: 14px;
  color: #111B21;
}

.shell { max-width: 1120px; margin: 0 auto; padding: 0 28px; }

.split-hero {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 40px;
  align-items: center;
  padding: 48px 0 36px;
}
.copy-col h1 {
  font-size: 34px;
  line-height: 1.35;
  color: #075E54;
  margin-bottom: 18px;
}
.copy-col p { margin-bottom: 12px; color: #111B21; }

.mock-browser {
  background: #fff;
  border: 1px solid #d8d2c8;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 12px 32px rgba(17, 27, 33, 0.08);
}
.chrome-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: #f3f0ea;
  border-bottom: 1px solid #e4ddd4;
}
.chrome-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #c5beb4;
}
.chrome-addr {
  margin-left: 10px;
  flex: 1;
  height: 18px;
  border-radius: 9px;
  background: #fff;
}
.pane-row {
  display: grid;
  grid-template-columns: 28% 1fr 22%;
  min-height: 280px;
}
.pane-a {
  background: #075E54;
  padding: 10px 0;
}
.list-row {
  height: 36px;
  margin: 6px 8px;
  border-radius: 6px;
  background: rgba(255,255,255,0.12);
}
.list-row.lit { background: rgba(37, 211, 102, 0.35); }
.pane-b {
  background: #ECE5DD;
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.bubble {
  max-width: 78%;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 12px;
  line-height: 1.45;
}
.bubble.in { background: #fff; align-self: flex-start; }
.bubble.out { background: #d9fdd3; align-self: flex-end; }
.pane-c { background: #f7f5f1; }

.block { padding: 42px 0; }
.block h2 {
  font-size: 24px;
  color: #075E54;
  margin-bottom: 14px;
}
.lead { margin-bottom: 12px; }

.trio-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 20px;
}
.icon-tile {
  background: #fff;
  border: 1px solid #ECE5DD;
  border-radius: 10px;
  padding: 20px 18px;
}
.icon-tile svg { display: block; margin-bottom: 12px; }
.icon-tile strong {
  display: block;
  margin-bottom: 8px;
  color: #075E54;
}

.duty-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 18px;
}
.duty-phone, .duty-web {
  padding: 22px;
  border-radius: 10px;
}
.duty-phone { background: #ECE5DD; }
.duty-web { background: #e8f8f0; border: 1px solid #cfeedd; }
.duty-phone h3, .duty-web h3 {
  font-size: 18px;
  margin-bottom: 10px;
  color: #075E54;
}
.duty-grid ul { padding-left: 18px; margin: 10px 0; }
.duty-grid li { margin: 6px 0; }

.type-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 18px;
}
.type-cell {
  border: 1px solid #ECE5DD;
  border-radius: 8px;
  padding: 16px 14px;
  background: #faf9f7;
}
.type-cell svg { display: block; margin-bottom: 8px; }
.type-cell strong { display: block; margin-bottom: 6px; color: #128C7E; }

.step-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 20px;
  border: 1px solid #ECE5DD;
  border-radius: 10px;
  overflow: hidden;
}
.step-cell {
  padding: 20px 16px;
  background: #fff;
  border-right: 1px solid #ECE5DD;
}
.step-cell:last-child { border-right: 0; }
.step-num {
  display: inline-block;
  width: 28px;
  height: 28px;
  line-height: 28px;
  text-align: center;
  border-radius: 50%;
  background: #25D366;
  color: #111B21;
  font-weight: 700;
  margin-bottom: 10px;
}
.step-cell strong { display: block; margin-bottom: 8px; color: #075E54; }

.seat-board {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
  font-size: 15px;
}
.seat-board th, .seat-board td {
  border: 1px solid #d8d2c8;
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}
.seat-board th {
  background: #075E54;
  color: #fff;
  font-weight: 600;
}
.seat-board tr:nth-child(even) td { background: #f7f5f1; }

.miss-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 18px;
}
.miss-box {
  padding: 20px;
  background: #fff;
  border-left: 4px solid #128C7E;
  border: 1px solid #ECE5DD;
  border-left: 4px solid #128C7E;
}
.miss-box strong { display: block; margin-bottom: 8px; color: #075E54; }

.fold-list { margin-top: 12px; }
.fold-list details {
  border-bottom: 1px solid #ECE5DD;
  padding: 12px 0;
}
.fold-list summary {
  cursor: default;
  font-weight: 650;
  color: #075E54;
  list-style: none;
}
.fold-list summary::-webkit-details-marker { display: none; }
.fold-list details p { margin-top: 8px; }

.site-foot {
  background: #111B21;
  color: #ECE5DD;
  padding: 36px 0 28px;
  margin-top: 20px;
  font-size: 14px;
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 24px;
}
.site-foot h3 {
  color: #25D366;
  font-size: 15px;
  margin-bottom: 8px;
}
.legal { margin-top: 22px; padding-top: 16px; border-top: 1px solid #2a3338; color: #b8b2aa; }

@media (max-width: 900px) {
  .split-hero, .duty-grid, .trio-row, .type-grid, .step-strip, .miss-row, .foot-grid, .pane-row {
    grid-template-columns: 1fr;
  }
  .mast-light { flex-direction: column; align-items: flex-start; }
  .pane-c { min-height: 40px; }
}