:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --ink: #0f172a;
  --sub: #475569;
  --line: #d7e3f4;
  --blue: #1a56db;
  --blue-2: #1e3a8a;
  --side: #0b1f4d;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.7 "Segoe UI", "Microsoft YaHei", sans-serif;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.util {
  background: var(--blue-2);
  color: #dbeafe;
  padding: 8px 24px;
  font-size: 13px;
  display: flex;
  justify-content: space-between;
}
.util a { color: #fff; }

.frame {
  display: grid;
  grid-template-columns: 232px 1fr;
  min-height: 100vh;
}

.side {
  background: var(--side);
  color: #c7d2fe;
  padding: 28px 20px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 28px;
}
.logo svg { width: 26px; height: 26px; }
.side a {
  display: block;
  color: #c7d2fe;
  padding: 10px 12px;
  border-radius: 6px;
  margin-bottom: 6px;
}
.side a.now {
  background: #1d4ed8;
  color: #fff;
  text-decoration: none;
}
.side a:hover { background: #1e3a8a; text-decoration: none; color: #fff; }

.main { padding: 28px 36px 64px; }
.hero-box {
  background: linear-gradient(120deg, #1e3a8a, #2563eb);
  color: #fff;
  padding: 32px 36px;
  border-radius: 12px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 24px;
}
.hero-box h1 { margin: 0 0 12px; font-size: 32px; line-height: 1.3; }
.hero-box p { margin: 0 0 16px; color: #dbeafe; }
.tags { display: flex; gap: 8px; flex-wrap: wrap; padding: 0; list-style: none; }
.tags li { background: rgba(255,255,255,.14); padding: 3px 10px; border-radius: 4px; font-size: 13px; }
.dl {
  background: #fff;
  color: var(--ink);
  border-radius: 10px;
  padding: 18px;
}
.dl h2 { margin: 0 0 8px; font-size: 18px; }
.dl a {
  display: block;
  background: var(--blue);
  color: #fff;
  text-align: center;
  padding: 10px 12px;
  border-radius: 6px;
  margin-bottom: 8px;
  font-weight: 700;
  text-decoration: none;
}
.dl a.sub { background: #e2e8f0; color: #0f172a; }

.grid3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 28px 0;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px 18px 8px;
}
.card h2 { font-size: 18px; margin: 0 0 10px; }
.card svg { width: 22px; height: 22px; color: var(--blue); }

.block {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 22px 26px;
  margin-bottom: 18px;
}
.block h2 { margin-top: 0; font-size: 22px; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
th, td { border-bottom: 1px solid var(--line); text-align: left; padding: 8px 6px; }
th { color: var(--blue-2); }

.qa dt { font-weight: 700; margin: 16px 0 6px; }
.qa dd { margin: 0; color: var(--sub); }

.foot {
  grid-column: 1 / -1;
  background: #0b1f4d;
  color: #93c5fd;
  padding: 24px 36px 32px;
  font-size: 13px;
}
.foot a { color: #fff; margin-right: 14px; }
.foot p { margin: 8px 0; }

@media (max-width: 960px) {
  .frame { grid-template-columns: 1fr; }
  .side { position: relative; height: auto; }
  .hero-box, .grid3 { grid-template-columns: 1fr; }
  .main { padding: 18px 16px 40px; }
}