:root {
  --bg: #0A1628;
  --card: #12233A;
  --ink: #D7E4EF;
  --mint: #A8E6CF;
  --line: #24374F;
  --foot: #060D18;
  --muted: #8FA3B5;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.75;
  font-size: 16px;
}

img,
svg {
  display: block;
  max-width: 100%;
}

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

a:hover {
  text-decoration: underline;
}

.wrap {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

.bar {
  background: #0A1628;
  border-bottom: 1px solid var(--line);
}

.bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 64px;
}

.brand {
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  justify-content: flex-end;
}

.nav a {
  color: #C5D4E2;
  font-size: 13px;
}

.hero {
  padding: 36px 0 28px;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.pair {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 22px 22px 20px;
}

.pair-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.pair-head svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.pair-label {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--mint);
}

.hero h1 {
  margin: 0 0 12px;
  font-size: 28px;
  line-height: 1.35;
  grid-column: 1 / -1;
}

.lead {
  margin: 0 0 18px;
  color: var(--muted);
  grid-column: 1 / -1;
}

.section {
  padding: 42px 0;
  border-bottom: 1px solid var(--line);
}

.section h2 {
  margin: 0 0 16px;
  font-size: 22px;
  line-height: 1.4;
}

.section p {
  margin: 0 0 14px;
}

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

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 16px;
  color: var(--mint);
  display: flex;
  align-items: center;
  gap: 10px;
}

.card h3 svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.card p:last-child {
  margin-bottom: 0;
}

.timeline {
  margin: 20px 0 8px;
  padding: 4px 0 4px 22px;
  border-left: 1px solid #3A536B;
  display: grid;
  gap: 18px;
}

.t-item {
  position: relative;
  background: var(--card);
  border-radius: 10px;
  padding: 14px 16px;
}

.t-item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 20px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--mint);
}

.t-item h3 {
  margin: 0 0 6px;
  font-size: 16px;
  color: var(--mint);
}

.t-item p:last-child {
  margin-bottom: 0;
}

.table-wrap {
  overflow-x: auto;
  margin: 18px 0 8px;
  border: 1px solid var(--line);
  border-radius: 10px;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  font-size: 15px;
}

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

th {
  color: var(--mint);
  font-weight: 600;
  background: #0E1C30;
}

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

.faq {
  display: grid;
  gap: 10px;
}

details {
  background: #0E1C30;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 4px 16px 4px;
}

summary {
  cursor: pointer;
  padding: 12px 0;
  font-weight: 600;
  color: var(--ink);
}

details p {
  color: #C5D4E2;
}

.foot {
  background: var(--foot);
  color: #9BB0C2;
  padding: 28px 0 36px;
  font-size: 13px;
}

.foot p {
  margin: 0 0 8px;
}

.foot strong {
  color: var(--mint);
  font-weight: 600;
}

@media (max-width: 800px) {
  .hero-grid,
  .cards {
    grid-template-columns: 1fr;
  }

  .bar-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 12px 0;
  }

  .nav {
    justify-content: flex-start;
  }

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