:root{--bg:#fff;--fg:#111827;--muted:#6b7280;--brand:#0ea5e9;--border:#e5e7eb;--card:#f9fafb;--maxw:760px}
*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.65}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
.lv-wrap{max-width:var(--maxw);margin:0 auto;padding:24px 20px}
.lv-back{display:inline-block;margin-bottom:16px;color:var(--muted);font-size:14px}
.lv-hero{margin:0 0 24px;border-radius:12px;overflow:hidden;background:var(--card);aspect-ratio:16/9;display:block}
.lv-hero img{width:100%;height:100%;object-fit:cover;display:block}
h1{font-size:2rem;line-height:1.2;margin:0 0 12px}
h2{font-size:1.4rem;line-height:1.3;margin:36px 0 12px}
h3{font-size:1.15rem;line-height:1.35;margin:24px 0 8px}
p{margin:0 0 14px}
.lv-meta{color:var(--muted);font-size:14px;margin:0 0 20px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.lv-author-mini{display:inline-flex;align-items:center;gap:8px}
.lv-author-mini img{border-radius:50%;background:var(--card)}
.lv-tag{display:inline-block;background:var(--card);color:var(--fg);border:1px solid var(--border);border-radius:999px;padding:2px 10px;font-size:12px;margin-right:6px}
table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14px}
th,td{border:1px solid var(--border);padding:8px 10px;text-align:left}
th{background:var(--card);font-weight:600}
.lv-proscons{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:16px 0}
.lv-proscons > div{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:14px}
.lv-proscons ul{margin:8px 0 0;padding-left:20px}
@media(max-width:640px){.lv-proscons{grid-template-columns:1fr}}
.lv-faq{margin:20px 0}
.lv-faq details{border-bottom:1px solid var(--border);padding:12px 0}
.lv-faq summary{cursor:pointer;font-weight:600}
.lv-faq p{margin:8px 0 0;color:var(--fg)}
.lv-inline-fig{margin:20px 0}
.lv-inline-fig img{width:100%;height:auto;border-radius:8px;display:block}
.lv-inline-fig figcaption{font-size:13px;color:var(--muted);margin-top:6px;text-align:center}
.lv-related{margin:32px 0}
.lv-related h3{margin-bottom:12px}
.lv-related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.lv-related-grid a{display:block;background:var(--card);border:1px solid var(--border);border-radius:8px;padding:8px;text-align:center;color:var(--fg)}
.lv-related-grid a img{width:100%;height:auto;border-radius:4px;margin-bottom:6px;background:#fff}
.lv-related-grid a span{font-size:12px;line-height:1.3;display:block}
.lv-author-box{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:16px;margin:32px 0;display:flex;gap:14px;align-items:flex-start}
.lv-author-box img{border-radius:50%}
.lv-author-box h4{margin:0 0 4px}
.lv-author-box p{margin:2px 0;font-size:14px;color:var(--muted)}
.lv-related-articles{margin:32px 0}
.lv-related-articles ul{list-style:none;padding:0;margin:0}
.lv-related-articles li{border-bottom:1px solid var(--border);padding:10px 0}
.lv-related-articles a{color:var(--fg);font-weight:500}
.lv-related-articles a:hover{color:var(--brand)}
.lv-index-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;margin:24px 0}
.lv-card{border:1px solid var(--border);border-radius:10px;overflow:hidden}
.lv-card a{display:block;padding:16px;color:var(--fg)}
.lv-card:hover{border-color:var(--brand)}
.lv-cat{display:inline-block;font-size:11px;text-transform:uppercase;letter-spacing:.5px;color:var(--brand);margin-bottom:6px}
.lv-card h3{margin:0 0 6px;font-size:1.05rem}
.lv-card p{margin:0;color:var(--muted);font-size:14px}