:root {
  --bg: #101014;
  --panel: rgba(255, 255, 255, 0.055);
  --panel-strong: rgba(255, 255, 255, 0.08);
  --line: rgba(255, 255, 255, 0.1);
  --text: #f7f3ee;
  --muted: #aaa4b7;
  --accent: #fe2c55;
  --accent-soft: rgba(254, 44, 85, 0.14);
  --gold: #f0b35f;
  --max: 1120px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: linear-gradient(180deg, #0d0d12 0%, #121218 46%, #101014 100%); color: var(--text); font-family: Inter, "PingFang SC", "Microsoft YaHei UI", system-ui, sans-serif; line-height: 1.75; }
a { color: inherit; }
.topbar { position: sticky; top: 0; z-index: 20; backdrop-filter: blur(18px); background: rgba(16, 16, 20, 0.78); border-bottom: 1px solid rgba(255,255,255,0.06); }
.nav { max-width: var(--max); margin: 0 auto; padding: 14px 22px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.brand { font-weight: 900; letter-spacing: 0.14em; text-decoration: none; }
.nav-links { display: flex; gap: 18px; color: var(--muted); font-size: 0.94rem; }
.nav-links a { text-decoration: none; }
.shell { max-width: var(--max); margin: 0 auto; padding: 0 22px; }
.hero { padding: 72px 0 38px; }
.kicker { display: inline-flex; padding: 6px 12px; border: 1px solid rgba(240,179,95,0.28); border-radius: 999px; color: var(--gold); background: rgba(240,179,95,0.08); font-size: 0.78rem; font-weight: 800; letter-spacing: 0.08em; }
h1 { max-width: 860px; margin: 20px 0 18px; font-size: clamp(2.2rem, 5.2vw, 4.6rem); line-height: 1.08; letter-spacing: 0; }
.lead { max-width: 820px; margin: 0; color: #d6d0df; font-size: 1.08rem; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 11px 18px; border-radius: 8px; text-decoration: none; font-weight: 800; border: 1px solid var(--line); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: white; box-shadow: 0 16px 40px rgba(254, 44, 85, 0.18); }
.btn.secondary { background: rgba(255,255,255,0.04); color: var(--text); }
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 28px; padding: 18px 0 70px; align-items: start; }
.article-card, .side-card { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; }
.article-card { padding: clamp(22px, 4vw, 38px); }
.article-card h2 { margin: 0 0 12px; font-size: 1.55rem; line-height: 1.3; }
.article-card section + section { margin-top: 34px; padding-top: 28px; border-top: 1px solid var(--line); }
ul, ol { padding-left: 1.25rem; }
li + li { margin-top: 8px; }
.side { position: sticky; top: 82px; display: grid; gap: 14px; }
.side-card { padding: 18px; }
.side-card h2, .side-card h3 { margin: 0 0 10px; font-size: 1rem; }
.side-card a { display: block; color: var(--muted); text-decoration: none; margin-top: 8px; }
.faq details { padding: 15px 0; border-top: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 800; }
.faq p { color: var(--muted); margin-bottom: 0; }
.related-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; }
.related-grid a { padding: 14px; border-radius: 8px; background: var(--panel-strong); text-decoration: none; color: #eee; border: 1px solid transparent; }
.related-grid a:hover { border-color: rgba(254,44,85,0.35); }
.footer { border-top: 1px solid var(--line); color: var(--muted); padding: 28px 22px; text-align: center; }
@media (max-width: 860px) { .nav { align-items: flex-start; flex-direction: column; } .nav-links { flex-wrap: wrap; gap: 12px; } .layout { grid-template-columns: 1fr; } .side { position: static; } .related-grid { grid-template-columns: 1fr; } }