:root {
  --navy: #0f172a;
  --side: #1e293b;
  --blue: #1d4ed8;
  --sky: #dbeafe;
  --panel: #f1f5f9;
  --ink: #0f172a;
  --dim: #475569;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--ink);
  background: #e8eef8;
  font-size: 16px;
  line-height: 1.7;
}

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

.rail {
  background: var(--side);
  color: #e2e8f0;
  padding: 28px 20px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.mark {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 28px;
}
.rail nav a {
  display: block;
  color: #94a3b8;
  text-decoration: none;
  padding: 10px 12px;
  border-left: 3px solid transparent;
  margin-bottom: 6px;
}
.rail nav a:hover { color: #fff; background: #334155; }
.rail nav a.on {
  color: #fff;
  border-left-color: #60a5fa;
  background: #334155;
}
.rail .hint {
  margin-top: 32px;
  font-size: 12px;
  color: #64748b;
  line-height: 1.6;
}

.main {
  padding: 0 0 48px;
}
.topbar {
  background: #fff;
  border-bottom: 1px solid #cbd5e1;
  padding: 14px 32px;
  font-size: 13px;
  color: var(--dim);
}
.work {
  padding: 28px 32px 0;
  max-width: 920px;
}

.hero-panel {
  background: linear-gradient(90deg, #1e3a8a, #1d4ed8);
  color: #fff;
  padding: 28px 28px 24px;
  margin-bottom: 22px;
}
.hero-panel h1 {
  font-size: 28px;
  line-height: 1.4;
  margin: 0 0 12px;
}
.hero-panel p { margin: 0 0 16px; color: #dbeafe; }
.hero-panel .actions a {
  display: inline-block;
  background: #fff;
  color: #1e3a8a;
  text-decoration: none;
  padding: 10px 18px;
  margin-right: 10px;
  margin-bottom: 8px;
  font-weight: 700;
  font-size: 14px;
}
.hero-panel .actions a.line {
  background: transparent;
  color: #fff;
  border: 1px solid #93c5fd;
}

.panel {
  background: #fff;
  border: 1px solid #cbd5e1;
  margin-bottom: 16px;
}
.panel h2 {
  margin: 0;
  padding: 12px 18px;
  background: var(--panel);
  font-size: 18px;
  border-bottom: 1px solid #cbd5e1;
}
.panel .body { padding: 16px 18px 18px; }
.panel p { margin: 0 0 10px; }
.panel ul { margin: 0; padding-left: 1.2em; }
.panel li { margin-bottom: 6px; }

.bar {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed #cbd5e1;
}
.bar:last-child { border-bottom: 0; }
.bar b { color: var(--blue); font-size: 14px; }

table.grid {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
table.grid th, table.grid td {
  border: 1px solid #cbd5e1;
  padding: 8px 10px;
  text-align: left;
}
table.grid th { background: #eff6ff; }

.faq-list dt {
  font-weight: 700;
  margin-top: 14px;
}
.faq-list dd {
  margin: 6px 0 0;
  color: var(--dim);
}

.dl-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}
.dl-strip a {
  background: var(--sky);
  color: #1e3a8a;
  text-decoration: none;
  padding: 8px 12px;
  font-size: 14px;
}

.foot {
  background: var(--navy);
  color: #cbd5e1;
  padding: 22px 32px 28px;
  font-size: 12px;
  line-height: 1.7;
}
.foot a { color: #93c5fd; }

.ico { width: 16px; height: 16px; vertical-align: -3px; margin-right: 4px; }

@media (max-width: 860px) {
  .frame { grid-template-columns: 1fr; }
  .rail { position: relative; height: auto; }
  .bar { grid-template-columns: 1fr; }
  .work, .topbar, .foot { padding-left: 16px; padding-right: 16px; }
}