/* 第2套 www · 左文右下载栏 · 先能力后评价 */
:root {
  --blue: #1f5aa6;
  --blue-deep: #163e74;
  --ink: #1a2230;
  --muted: #5a6574;
  --bg: #eef2f7;
  --card: #ffffff;
  --line: #d5deea;
  --sans: "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: auto; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.78;
}
a { color: var(--blue); }
svg { display: inline-block; vertical-align: middle; }
.top {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 12;
}
.top__in {
  width: min(1180px, calc(100% - 28px));
  margin: 0 auto;
  min-height: 64px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: var(--ink); font-weight: 800; font-size: 19px;
}
.brand svg { width: 28px; height: 28px; color: var(--blue); }
.nav { display: flex; gap: 6px; }
.nav a {
  text-decoration: none; color: var(--ink);
  padding: 7px 12px; border-radius: 4px;
  display: inline-flex; align-items: center; gap: 6px;
}
.nav a svg { width: 15px; height: 15px; }
.nav a:hover { background: #e7eef8; }
.nav a[aria-current="page"] { background: var(--blue); color: #fff; }
.layout {
  width: min(1180px, calc(100% - 28px));
  margin: 20px auto 28px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 22px;
  align-items: start;
}
.main { min-width: 0; }
.dl-rail {
  position: sticky; top: 80px;
  background: var(--blue);
  color: #fff;
  border-radius: 8px;
  padding: 20px 18px;
}
.dl-rail h2, .dl-rail p { color: #fff; }
.dl-rail p { color: #d7e6f8; }
.dl-rail .btn { background: #fff; color: var(--blue-deep); }
.dl-rail .btn:hover { background: #e7eef8; }
.dl-rail .btn-ghost { border-color: #fff; color: #fff; background: transparent; }
.dl-rail .btn-ghost:hover { background: rgba(255,255,255,0.12); }
.kicker { color: var(--blue); font-size: 12px; font-weight: 700; letter-spacing: 0.1em; margin: 0 0 8px; }
h1 { font-size: 30px; line-height: 1.32; margin: 0 0 14px; }
h2 { font-size: 22px; margin: 0 0 10px; color: var(--blue-deep); }
h3 { font-size: 17px; margin: 14px 0 6px; }
p { margin: 0 0 12px; }
.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px 20px 10px;
  margin: 0 0 16px;
}
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.review { border-left: 3px solid var(--blue); padding: 2px 0 2px 12px; margin-bottom: 14px; }
.compare-dl { margin: 0 0 12px; }
.compare-dl div {
  display: grid; grid-template-columns: 140px 1fr;
  gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--line);
}
.compare-dl dt { font-weight: 700; color: var(--blue-deep); }
.faq details { border: 1px solid var(--line); margin-bottom: 8px; padding: 4px 12px; background: #fff; }
.faq summary { cursor: pointer; font-weight: 700; padding: 9px 0; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.btn, .btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  min-height: 42px; padding: 0 14px; border-radius: 4px;
  text-decoration: none; font-weight: 700;
  transition: background 0.15s ease;
}
.btn { background: var(--blue); color: #fff; }
.btn:hover { background: var(--blue-deep); }
.btn-ghost { background: #fff; color: var(--blue); border: 1px solid var(--blue); }
.btn-ghost:hover { background: #e7eef8; }
.btn svg, .btn-ghost svg { width: 16px; height: 16px; }
.foot {
  background: #16304f; color: #c5d2e0;
  padding: 22px 0 30px;
}
.foot__in { width: min(1180px, calc(100% - 28px)); margin: 0 auto; font-size: 13.5px; }
.foot p { color: #c5d2e0; }
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .dl-rail { position: static; }
  .row-2, .compare-dl div { grid-template-columns: 1fr; }
  h1 { font-size: 24px; }
}