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0}.section-header{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:22px}.section-header h2{margin:0;font-size:clamp(28px,4vw,44px);line-height:1.08;letter-spacing:-.04em}.section-header p{margin:8px 0 0;color:var(--muted);max-width:620px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.topic-card,.guide-card,.info-card{background:#ffffffd1;border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}.topic-card{min-height:220px;display:flex;flex-direction:column;justify-content:space-between;text-decoration:none;transition:transform .18s ease,border-color .18s ease}.topic-card:hover{transform:translateY(-3px);border-color:#0f8f614d}.topic-card h3,.guide-card h3{margin:12px 0 8px;letter-spacing:-.025em;line-height:1.2}.topic-card p,.guide-card p,.info-card 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var(--border);border-radius:24px;padding:min(6vw,52px);box-shadow:var(--shadow)}.article-body h1{margin-top:0;font-size:clamp(34px,5vw,58px);line-height:1.04;letter-spacing:-.055em}.article-body h2{margin-top:42px;padding-top:22px;border-top:1px solid var(--border);letter-spacing:-.03em}.article-body h3{margin-top:30px;letter-spacing:-.02em}.article-body p,.article-body li{color:#333}.article-body pre{padding:16px;border-radius:16px;overflow-x:auto;border:1px solid rgba(255,255,255,.12)}.article-body code{font-family:Geist Mono,ui-monospace,monospace;font-size:.92em}.article-body :not(pre)>code{background:#f3f4f6;border:1px solid var(--border);padding:2px 6px;border-radius:7px}.article-body table{border-collapse:collapse;width:100%;display:block;overflow-x:auto}.article-body th,.article-body td{border:1px solid var(--border);padding:10px 12px;text-align:left}.article-body th{background:var(--surface-soft)}.footer{border-top:1px solid var(--border);padding:34px 0;color:var(--muted);font-size:14px}.footer .container{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}@media(max-width:900px){.grid{grid-template-columns:1fr}.section-header{display:block}.nav{align-items:flex-start;padding:14px 0;flex-direction:column}.nav-links{flex-wrap:wrap}.article{grid-template-columns:1fr}.article-sidebar{position:static}}