:root{--color-bg:#fff;--color-bg-soft:#f6f8fb;--color-text:#1a2029;--color-muted:#5b6676;--color-border:#e3e8ef;--color-primary:#0b6bcb;--color-primary-dark:#084f97;--color-accent:#0f766e;--radius:10px;--maxw:960px;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);margin:0;font-size:16px;line-height:1.75}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}.site-header{border-bottom:1px solid var(--color-border);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:10;background:#ffffffeb;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;gap:16px;min-height:60px;display:flex}.brand{color:var(--color-text);font-size:1.15rem;font-weight:700}.site-nav{gap:18px;font-size:.95rem;display:flex}.site-nav a{color:var(--color-muted)}.site-nav a:hover{color:var(--color-primary)}.site-main{padding:32px 0 56px}.hero{padding:24px 0 8px}.hero h1{margin:0 0 12px;font-size:2rem;line-height:1.3}.hero .lead{color:var(--color-muted);margin:0 0 20px;font-size:1.06rem}.tag-list{flex-wrap:wrap;gap:8px;margin:0 0 8px;padding:0;list-style:none;display:flex}.tag-list li{color:var(--color-accent);background:#e6f4f1;border-radius:999px;padding:3px 12px;font-size:.82rem}.section-title{border-bottom:1px solid var(--color-border);margin:40px 0 16px;padding-bottom:8px;font-size:1.35rem}.card-list{gap:14px;margin:0;padding:0;list-style:none;display:grid}.card{border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-bg-soft);padding:16px 18px}.card h3{margin:0 0 8px;font-size:1.08rem}.card p{color:var(--color-muted);margin:0;font-size:.95rem}.card .meta{color:var(--color-muted);margin-top:10px;font-size:.82rem}.product-list{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin:0;padding:0;list-style:none;display:grid}.product-list li{border:1px solid var(--color-border);border-radius:var(--radius);padding:16px 18px}.product-list strong{margin-bottom:6px;display:block}.breadcrumb{color:var(--color-muted);margin-bottom:18px;font-size:.86rem}.breadcrumb ol{flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;display:flex}.breadcrumb li:after{content:"/";color:var(--color-border);margin-left:8px}.breadcrumb li:last-child:after{content:""}.content-unit{max-width:760px}.unit-header{margin-bottom:24px}.unit-scenario{color:var(--color-accent);background:#e6f4f1;border-radius:999px;margin:0 0 10px;padding:2px 10px;font-size:.8rem;display:inline-block}.unit-header h1{margin:0 0 14px;font-size:1.9rem;line-height:1.35}.answer-summary{background:var(--color-bg-soft);border-left:4px solid var(--color-primary);border-radius:0 var(--radius) var(--radius) 0;margin:0 0 14px;padding:14px 18px;font-size:1.05rem}.unit-meta{color:var(--color-muted);flex-wrap:wrap;gap:14px;margin:0;font-size:.84rem;display:flex}.unit-evidence h2{margin:34px 0 12px;font-size:1.3rem}.unit-evidence h3{margin:26px 0 10px;font-size:1.1rem}.unit-evidence ul,.unit-evidence ol{padding-left:22px}.unit-evidence li{margin:6px 0}.unit-evidence table{border-collapse:collapse;width:100%;margin:18px 0;font-size:.95rem}.unit-evidence th,.unit-evidence td{border:1px solid var(--color-border);text-align:left;padding:8px 12px}.unit-evidence th{background:var(--color-bg-soft)}.entity-graph{border:1px solid var(--color-border);border-radius:var(--radius);margin:34px 0;padding:18px 20px}.entity-graph h2{margin:0 0 12px;font-size:1.2rem}.entity-graph ul{gap:8px;margin:0;padding:0;list-style:none;display:grid}.entity{flex-wrap:wrap;align-items:center;gap:8px;font-size:.95rem;display:flex}.entity-type{color:var(--color-accent);border:1px solid #bfe3dd;border-radius:4px;padding:0 6px;font-size:.72rem}.entity-rel{color:var(--color-muted);font-size:.85rem}.unit-faq{margin:34px 0}.unit-faq h2{margin:0 0 12px;font-size:1.2rem}.unit-faq dl{margin:0}.unit-faq dt{margin-top:16px;font-weight:600}.unit-faq dd{color:var(--color-muted);margin:6px 0 0}.unit-sources{margin:34px 0}.unit-sources h2{margin:0 0 12px;font-size:1.2rem}.unit-sources ol{padding-left:22px}.unit-sources li{margin:6px 0;font-size:.94rem}.unit-sources .src-statement{color:var(--color-muted)}.cta-conclusion{border:1px solid var(--color-border);border-radius:var(--radius);background:linear-gradient(135deg,#0b6bcb0f,#0f766e12);margin:36px 0 8px;padding:22px 24px}.cta-conclusion p{margin:0 0 12px;font-size:1.02rem}.cta-link{font-weight:600;display:inline-block}.site-footer{border-top:1px solid var(--color-border);color:var(--color-muted);background:var(--color-bg-soft);padding:24px 0;font-size:.9rem}.site-footer p{margin:4px 0}.footer-meta{font-size:.82rem}@media (width<=640px){.hero h1{font-size:1.6rem}.unit-header h1{font-size:1.5rem}.site-nav{gap:12px;font-size:.88rem}}