:root{color-scheme:light;--text:#1f2933;--muted:#5b6673;--line:#d9e2ec;--bg:#f7f9fb;--accent:#126466}body{margin:0;font-family:Arial,"Microsoft YaHei",sans-serif;color:var(--text);background:#fff;line-height:1.65}.site-header{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px 32px;border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0}.brand{display:flex;align-items:center;text-decoration:none}.brand img{height:44px;width:auto;display:block}.site-header nav{display:flex;gap:16px;flex-wrap:wrap}.site-header nav a{color:var(--text);text-decoration:none;font-size:14px}.page{max-width:1040px;margin:0 auto;padding:32px 24px 64px}.page h1{font-size:34px;line-height:1.25;margin:20px 0 18px}.page h2{font-size:23px;margin-top:34px;border-top:1px solid var(--line);padding-top:22px}.page h3{font-size:18px}.page p{font-size:16px}.page table{width:100%;border-collapse:collapse;margin:18px 0;background:#fff}.page th,.page td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}.page th{background:var(--bg)}.page code{background:var(--bg);padding:2px 4px;border-radius:3px}.site-footer{border-top:1px solid var(--line);padding:24px 32px;color:var(--muted);font-size:14px}.site-footer a{color:var(--accent)}.hero-facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin:24px 0}.fact{border:1px solid var(--line);padding:14px;background:var(--bg)}@media(max-width:720px){.site-header{align-items:flex-start;flex-direction:column}.page h1{font-size:27px}.page{padding:24px 16px 48px}.brand img{height:38px}}.entity-hero{border:2px solid #126466;background:#eef8f7;padding:28px;margin:6px 0 26px}.entity-hero h1{font-size:42px;margin:8px 0}.eyebrow{font-size:13px;text-transform:uppercase;color:#126466;font-weight:700}.hero-en{font-size:20px;font-weight:700;color:#243b53}.entity-tags{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0}.entity-tags span{background:#126466;color:#fff;padding:6px 10px;border-radius:4px;font-size:14px}.entity-desc{max-width:880px}.ai-summary-block{border:1px solid var(--line);padding:22px;background:#fbfdff;margin:24px 0}.summary-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}.summary-grid article,.product-card,.faq-item{border:1px solid var(--line);padding:16px;background:#fff}.product-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:20px 0}.product-card h2{border:0;padding:0;margin:0 0 8px;font-size:22px}.product-card h2 span{display:block;color:var(--muted);font-size:14px}.product-card dt{font-weight:700;margin-top:10px}.product-card dd{margin:4px 0 8px}.standard-faq{margin:24px 0}.faq-item h3{margin-top:0;color:#123}.product-card a{color:var(--accent);font-weight:700}.entity-priority-model{border:1px solid #b7d5d2;background:#f4fbfa;padding:20px;margin:22px 0}.entity-priority-model h2{border:0;margin-top:0;padding-top:0}.entity-priority-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:14px}.entity-priority-grid article{border:1px solid var(--line);background:#fff;padding:14px}.entity-priority-grid .entity-primary{border:2px solid #126466}.entity-label{font-size:13px;font-weight:700;color:#126466;margin:0 0 6px}.entity-priority-note{color:var(--muted);font-size:14px}@media(max-width:820px){.entity-priority-grid{grid-template-columns:1fr}}.evidence-layer{border:1px dashed #8aa6a3;background:#fbfefe;padding:18px;margin:18px 0}.evidence-layer h2{border:0;margin-top:0;padding-top:0}.evidence-layer p{color:var(--muted)}.entity-title-secondary{font-size:42px;line-height:1.25;margin:8px 0 18px;font-weight:700;color:var(--text)}