:root {
  --sky: #7dd3fc;
  --sky-deep: #0284c7;
  --office: #64748b;
  --ash: #f1f5f9;
  --paper: #ffffff;
  --ink: #0f172a;
  --line: #cbd5e1;
  --phone: #fff7ed;
  --web: #eff6ff;
  --accent: #0369a1;
}

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

html {
  scroll-behavior: auto;
}

body {
  font-family: Georgia, "Songti SC", "SimSun", "Microsoft YaHei", serif;
  background: var(--ash);
  color: var(--ink);
  line-height: 1.75;
}

svg {
  display: block;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.wrap {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  background: var(--paper);
  box-shadow: 0 1px 0 var(--line);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 700;
  color: var(--sky-deep);
}

.brand svg {
  width: 30px;
  height: 30px;
  color: var(--sky-deep);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
}

.hero {
  background: linear-gradient(180deg, #7dd3fc 0%, #bae6fd 42%, #94a3b8 100%);
  padding: 52px 0 40px;
}

.hero-inner h1 {
  font-size: clamp(26px, 3.2vw, 38px);
  line-height: 1.35;
  max-width: 18em;
  margin-bottom: 16px;
}

.hero-inner p {
  max-width: 42em;
  margin-bottom: 8px;
}

.section {
  padding: 42px 0;
}

.section h2 {
  font-size: 26px;
  line-height: 1.4;
  margin-bottom: 16px;
}

.lead {
  margin-bottom: 20px;
  max-width: 46em;
}

.stations {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
  margin-top: 8px;
}

.stations::before {
  content: "";
  position: absolute;
  left: 8%;
  right: 8%;
  top: 28px;
  height: 4px;
  background: var(--sky-deep);
}

.station {
  position: relative;
  padding: 0 10px;
  text-align: center;
}

.station-dot {
  width: 56px;
  height: 56px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: var(--paper);
  border: 4px solid var(--sky-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.station-dot svg {
  width: 24px;
  height: 24px;
  color: var(--sky-deep);
}

.station h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.station p {
  text-align: left;
  font-size: 15px;
  background: var(--paper);
  border-radius: 18px;
  padding: 14px 16px;
  min-height: 168px;
}

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

.pane {
  border-radius: 20px;
  padding: 20px;
}

.pane-phone {
  background: var(--phone);
}

.pane-web {
  background: var(--web);
}

.pane h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  font-size: 18px;
}

.pane svg {
  width: 20px;
  height: 20px;
}

.pane p + p,
.pane li + li {
  margin-top: 8px;
}

.pane ul {
  padding-left: 18px;
}

.sit-steps {
  display: grid;
  gap: 12px;
}

.sit-step {
  display: grid;
  grid-template-columns: 72px 1fr;
  background: var(--paper);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--line);
}

.sit-index {
  background: var(--sky-deep);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-weight: 800;
  font-size: 22px;
}

.sit-body {
  padding: 14px 16px;
}

.sit-body h3 {
  margin-bottom: 6px;
  font-size: 18px;
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--paper);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--line);
}

th,
td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

th {
  background: #e0f2fe;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

tr:last-child td {
  border-bottom: 0;
}

.chips {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.chip {
  background: var(--paper);
  border-radius: 22px;
  padding: 18px;
  border: 1px solid var(--line);
}

.chip h3 {
  margin: 8px 0 10px;
}

.chip svg {
  width: 22px;
  height: 22px;
  color: var(--sky-deep);
}

.flood {
  background: linear-gradient(90deg, #e0f2fe, #e2e8f0);
  border-radius: 20px;
  padding: 20px;
}

.flood ul {
  padding-left: 18px;
}

.flood li {
  margin-bottom: 8px;
}

.faq-dl {
  background: var(--paper);
  border-radius: 16px;
  border: 1px solid var(--line);
  padding: 8px 20px 16px;
}

.faq-dl dt {
  font-weight: 700;
  margin-top: 16px;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.faq-dl dd {
  margin: 8px 0 0;
}

.site-footer {
  background: #334155;
  color: #e2e8f0;
  padding: 28px 0 36px;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
}

.site-footer p {
  margin-bottom: 8px;
}

@media (max-width: 900px) {
  .header-row {
    flex-direction: column;
    align-items: flex-start;
    padding: 12px 0;
  }

  .stations,
  .split,
  .chips {
    grid-template-columns: 1fr;
  }

  .stations::before {
    display: none;
  }
}