:root {
  --steel: #1E3A5F;
  --steel-mid: #334E68;
  --steel-bar: #243B53;
  --steel-line: #627D98;
  --steel-mist: #9FB3C8;
  --steel-bg: #E8EEF4;
  --steel-card: #F4F7FA;
  --ink: #102A43;
  --warn: #B45309;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #0F2744;
  color: var(--ink);
  line-height: 1.7;
  padding: 18px 12px 28px;
}

a { color: #1E4E8C; text-decoration: none; }
a:hover { text-decoration: underline; }

.rdp {
  max-width: 1180px;
  margin: 0 auto;
  background: var(--steel-bg);
  border: 3px solid #0B1D32;
  box-shadow: 0 0 0 8px #16324F, 0 22px 40px rgba(0, 0, 0, 0.35);
}

.rdp-bar {
  background: linear-gradient(180deg, #3D5A80, var(--steel-bar));
  color: #E8EEF4;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}

.rdp-bar strong { font-weight: 600; }

.rdp-dots {
  display: flex;
  gap: 6px;
}

.rdp-dots i {
  display: block;
  width: 12px;
  height: 12px;
  background: #9FB3C8;
  border: 1px solid #102A43;
}

.inner-win {
  margin: 10px;
  border: 2px solid var(--steel);
  background: #F8FAFC;
}

.top {
  background: var(--steel);
  color: #E8EEF4;
  padding: 12px 18px 10px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  margin-bottom: 10px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  font-size: 0.9rem;
}

.nav a { color: #D9E2EC; }
.nav a:hover { color: #fff; text-decoration: none; background: #334E68; padding: 0 4px; }

.wrap { padding: 8px 18px 36px; }

.hero {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 20px;
  padding: 22px 0 10px;
  border-bottom: 2px solid var(--steel);
}

.hero h1 {
  font-size: clamp(1.45rem, 2.6vw, 1.95rem);
  line-height: 1.35;
  margin-bottom: 12px;
}

.hero p { margin-bottom: 8px; color: #334E68; }

.mini-rdp {
  border: 2px solid var(--steel-mid);
  background: #E8EEF4;
  min-height: 160px;
}

.mini-rdp header {
  background: var(--steel-mid);
  color: #fff;
  font-size: 0.75rem;
  padding: 4px 8px;
}

.mini-rdp .pane { padding: 12px; font-size: 0.82rem; color: #486581; }

.section { margin: 28px 0; }

.section h2 {
  font-size: 1.28rem;
  background: var(--steel-mid);
  color: #fff;
  padding: 8px 12px;
  margin-bottom: 12px;
}

.lead { margin-bottom: 12px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.93rem;
  background: #fff;
  border: 1px solid var(--steel-mist);
}

th, td {
  border: 1px solid var(--steel-mist);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

th { background: var(--steel); color: #fff; }

.cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 2px solid var(--steel);
}

.cols > section {
  padding: 16px;
  background: var(--steel-card);
  margin: 0;
}

.cols > section + section { border-left: 2px solid var(--steel); }

.steps {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 10px 14px;
  background: #fff;
  border: 1px solid var(--steel-mist);
  padding: 16px;
}

.steps span {
  background: var(--steel);
  color: #fff;
  text-align: center;
  padding: 8px 0;
  font-weight: 700;
}

.block {
  background: #fff;
  border: 1px solid var(--steel-line);
  padding: 16px;
  margin-bottom: 12px;
}

.faq { border-top: 2px solid var(--steel); padding-top: 8px; }

.faq dt {
  background: #D9E2EC;
  padding: 10px 12px;
  font-weight: 700;
  border-left: 6px solid var(--steel);
  margin-top: 12px;
}

.faq dd {
  padding: 10px 12px 12px;
  background: #fff;
  border: 1px solid #D9E2EC;
  border-top: 0;
  color: #334E68;
}

.foot {
  background: #102A43;
  color: #9FB3C8;
  padding: 16px 18px 20px;
  font-size: 0.88rem;
}

.foot p { margin-bottom: 6px; }

@media (max-width: 840px) {
  .hero, .cols { grid-template-columns: 1fr; }
  .cols > section + section { border-left: 0; border-top: 2px solid var(--steel); }
}