:root {
  --bg: #05080d;
  --panel: rgba(12, 19, 29, .78);
  --text: #f4f8fb;
  --muted: #9bb0c2;
  --line: rgba(166, 184, 204, .16);
  --accent: #67e8f9;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: linear-gradient(120deg, #06131a, #05080d 62%);
  color: var(--text);
  letter-spacing: 0;
}
a { color: inherit; text-decoration: none; }
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(5, 8, 13, .78);
  backdrop-filter: blur(20px);
}
.nav-inner, main, footer {
  width: min(1040px, calc(100% - 40px));
  margin: 0 auto;
}
.nav-inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.brand { display: flex; align-items: center; gap: 12px; font-weight: 900; }
.mark {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: #031116;
  background: linear-gradient(135deg, var(--accent), #f8fafc);
}
.links, .footer-links { display: flex; flex-wrap: wrap; gap: 12px 18px; color: var(--muted); font-size: 14px; }
.links a:hover, .footer-links a:hover { color: var(--text); }
.btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 18px;
  background: rgba(18, 28, 40, .84);
  color: var(--text);
  font-weight: 800;
}
.btn.primary {
  border-color: transparent;
  color: #041015;
  background: linear-gradient(135deg, var(--accent), #f8fafc);
}
.hero { padding: 82px 0 34px; }
.eyebrow { color: var(--accent); font-size: 14px; font-weight: 900; margin-bottom: 18px; }
h1 { margin: 0; max-width: 880px; font-size: clamp(34px, 6vw, 64px); line-height: 1.08; }
.lead { max-width: 820px; margin: 22px 0 0; color: #c4d2de; font-size: 18px; line-height: 1.8; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; padding: 28px 0 72px; }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.015)), var(--panel);
  padding: 24px;
}
.wide { grid-column: 1 / -1; }
h2 { margin: 0 0 14px; font-size: clamp(24px, 4vw, 38px); line-height: 1.16; }
h3 { margin: 20px 0 10px; font-size: 20px; }
p, li { color: var(--muted); line-height: 1.78; }
ul, ol { margin: 0; padding-left: 20px; }
li + li { margin-top: 8px; }
.note { color: #dce8ef; }
details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255,255,255,.025);
  padding: 16px 18px;
}
details + details { margin-top: 12px; }
summary {
  cursor: pointer;
  color: var(--text);
  font-weight: 800;
  min-height: 32px;
  display: flex;
  align-items: center;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
  margin-top: 18px;
}
.breadcrumb a:hover { color: var(--text); }
.related { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.related a {
  border: 1px solid var(--line);
  border-radius: 8px;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  padding: 0 14px;
  color: #dce8ef;
  background: rgba(255,255,255,.025);
}
.share-panel .actions { margin-top: 14px; }
table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 8px;
}
th, td {
  border: 1px solid var(--line);
  padding: 14px;
  text-align: left;
  color: var(--muted);
  vertical-align: top;
}
th {
  color: var(--text);
  background: rgba(255,255,255,.045);
}
input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-right: 8px;
  vertical-align: middle;
}
.mini-meta { color: var(--muted); font-size: 13px; margin-top: 12px; line-height: 1.7; }
footer {
  border-top: 1px solid var(--line);
  padding: 32px 0 46px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  font-size: 13px;
}
@media (max-width: 820px) {
  .nav-inner, main, footer { width: min(100% - 26px, 1040px); }
  .links a:not(.btn) { display: none; }
  .grid, .grid.three { grid-template-columns: 1fr; padding-bottom: 48px; }
  footer { display: block; }
  .footer-links { margin-top: 18px; }
}