:root {
  --navy: #0b132b;
  --ice: #5bc0be;
  --ice-d: #3a9a98;
  --panel: #1c2541;
  --text: #e8eef2;
  --mute: #9aa6b2;
  --paper: #f4f7fb;
}

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

body {
  font-family: "Verdana", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--navy);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
}

a { color: var(--ice); }
a:hover { color: #fff; }

.head {
  background: #060b1a;
  border-bottom: 1px solid #2a3558;
}

.head-inner {
  width: min(1180px, calc(100% - 28px));
  margin: 0 auto;
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  color: #fff;
  font-weight: 800;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.head nav a {
  color: #c5d0dc;
  text-decoration: none;
  margin-left: 16px;
  font-size: 14px;
}

.head nav a.is-current { color: var(--ice); border-bottom: 2px solid var(--ice); }

.split {
  width: min(1180px, calc(100% - 28px));
  margin: 24px auto 40px;
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 28px;
  align-items: start;
}

.dock {
  position: sticky;
  top: 16px;
  background: var(--panel);
  border: 1px solid #33406b;
  padding: 22px;
}

.dock h1 { font-size: 24px; line-height: 1.35; margin: 8px 0 12px; color: #fff; }

.dock .go, .pane .go {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--ice);
  color: var(--navy);
  text-decoration: none;
  font-weight: 800;
  padding: 11px 14px;
  margin: 6px 6px 0 0;
}

.dock .go:hover, .pane .go:hover { background: #fff; color: var(--navy); }

.dock .go.ghost {
  background: transparent;
  color: var(--ice);
  border: 1px solid var(--ice);
}

.marks { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.marks span { border: 1px solid #3d4d7a; padding: 3px 8px; font-size: 12px; color: var(--mute); }

.pane { background: var(--paper); color: #1b2430; padding: 8px 0 8px; }

.ask {
  border: 1px solid #d5deea;
  background: #fff;
  padding: 18px 18px 16px;
  margin: 0 0 12px;
}

.ask h2 { font-size: 20px; margin-bottom: 8px; color: #0b132b; }
.ask h3 { font-size: 16px; margin-bottom: 6px; }

.ask.outline { background: transparent; border-style: dashed; }

table.qa {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  font-size: 14px;
}

table.qa th, table.qa td { border: 1px solid #d5deea; padding: 8px; }
table.qa th { background: #0b132b; color: #fff; text-align: left; }

.tail {
  width: min(1180px, calc(100% - 28px));
  margin: 0 auto 36px;
  color: var(--mute);
  font-size: 13px;
}

.tail .ok { color: #cdecea; }
.tail nav { display: flex; gap: 14px; margin: 8px 0; }

@media (max-width: 880px) {
  .split { grid-template-columns: 1fr; }
  .dock { position: relative; }
}