:root{--text-h1:36px;--text-h2:26px;--text-h3:20px;--text-h4:18px;--text-lead:19px;--text-body:17px;--text-body-mobile:16px;--text-label:14px;--text-meta:13px;--text-caption:12px;--text-cta:16px;--text-price:24px;--leading-tight:1.3;--leading-snug:1.5;--leading-normal:1.7;--leading-relaxed:1.85;--weight-regular:400;--weight-medium:500;--weight-semibold:600;--weight-bold:700;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Helvetica Neue", Helvetica, Arial, sans-serif;--font-mono:"SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;--bg-page:#ffffff;--bg-subtle:#f9fafb;--bg-card:#ffffff;--bg-elevated:#f3f4f6;--bg-highlight:#eff6ff;--text-primary:#111827;--text-body:#374151;--text-muted:#6b7280;--text-faint:#9ca3af;--accent:#2563eb;--accent-hover:#1d4ed8;--accent-subtle:#eff6ff;--cta-primary:#2563eb;--cta-primary-hover:#1d4ed8;--cta-secondary:#10b981;--cta-urgent:#f59e0b;--border-subtle:#f3f4f6;--border-default:#e5e7eb;--border-strong:#d1d5db;--border-primary:#fbbf24;--status-success:#10b981;--status-info:#3b82f6;--status-warning:#f59e0b;--status-danger:#ef4444;--shadow-sm:0 1px 2px 0 rgba(0, 0, 0, 0.05);--shadow-md:0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);--shadow-lg:0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--container-max:1200px;--article-max:820px}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);font-size:var(--text-body);line-height:var(--leading-relaxed);color:var(--text-body);background-color:var(--bg-page);min-height:100vh;display:flex;flex-direction:column}@media(max-width:768px){body{font-size:var(--text-body-mobile)}}a{color:var(--accent);text-decoration:none;transition:color .15s ease-in-out}a:hover{color:var(--accent-hover)}img{max-width:100%;height:auto;display:block}button,input,select,textarea{font:inherit}.container{width:100%;max-width:var(--container-max);margin-left:auto;margin-right:auto;padding-left:1.25rem;padding-right:1.25rem}.site-header{background-color:#fff;border-bottom:1px solid var(--border-default);position:sticky;top:0;z-index:50;backdrop-filter:blur(8px)}.site-header__inner{display:flex;align-items:center;justify-content:space-between;height:64px}.site-logo{display:flex;align-items:center;gap:.6rem;font-size:1.15rem;font-weight:var(--weight-bold);color:var(--text-primary);text-decoration:none}.site-logo svg{width:28px;height:28px}.site-nav{display:flex;align-items:center;gap:1.2rem}.site-nav__list{display:flex;align-items:center;gap:1.1rem;list-style:none}.site-nav__link{font-size:15px;font-weight:var(--weight-medium);color:var(--text-body);padding:.4rem .2rem;border-bottom:2px solid transparent;transition:all .2s ease}.site-nav__link:hover,.site-nav__link.is-active{color:var(--accent);border-bottom-color:var(--accent)}.site-header__actions{display:flex;align-items:center;gap:.8rem}.search-btn{display:inline-flex;align-items:center;gap:.4rem;padding:.4rem .8rem;border-radius:var(--radius-md);border:1px solid var(--border-default);background:var(--bg-subtle);color:var(--text-muted);font-size:13px;cursor:pointer;text-decoration:none}.search-btn:hover{background:var(--bg-elevated);color:var(--text-primary)}.nav-toggle{display:none;background:0 0;border:none;padding:.5rem;cursor:pointer;color:var(--text-primary)}@media(max-width:992px){.site-nav{display:none;position:absolute;top:64px;left:0;width:100%;background:#fff;border-bottom:1px solid var(--border-default);padding:1rem 1.25rem;box-shadow:var(--shadow-md)}.site-nav.is-open{display:block}.site-nav__list{flex-direction:column;align-items:flex-start;gap:.75rem}.nav-toggle{display:block}}.site-main{flex:1;padding-top:1.5rem;padding-bottom:3rem}.breadcrumbs{font-size:var(--text-meta);color:var(--text-muted);margin-bottom:1.25rem}.breadcrumbs ol{display:flex;flex-wrap:wrap;align-items:center;list-style:none;gap:.4rem}.breadcrumbs li:not(:last-child)::after{content:"/";margin-left:.4rem;color:var(--text-faint)}.breadcrumbs a{color:var(--text-muted)}.breadcrumbs a:hover{color:var(--accent)}.site-footer{background:var(--bg-subtle);border-top:1px solid var(--border-default);padding:3rem 0 2rem;margin-top:auto;font-size:var(--text-label);color:var(--text-muted)}.site-footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2rem;margin-bottom:2rem}@media(max-width:768px){.site-footer__grid{grid-template-columns:1fr;gap:1.5rem}}.site-footer__title{font-size:15px;font-weight:var(--weight-semibold);color:var(--text-primary);margin-bottom:.8rem}.site-footer__links{list-style:none;display:flex;flex-direction:column;gap:.5rem}.site-footer__links a{color:var(--text-muted)}.site-footer__links a:hover{color:var(--accent)}.site-footer__legal{padding-top:1.5rem;border-top:1px solid var(--border-default);display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem;font-size:var(--text-meta)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-size:var(--text-cta);font-weight:var(--weight-semibold);line-height:1;padding:.75rem 1.4rem;border-radius:var(--radius-md);border:1px solid transparent;cursor:pointer;text-decoration:none;transition:all .2s cubic-bezier(.16,1,.3,1);white-space:nowrap}.btn:active{transform:scale(.98)}.btn--primary{background-color:var(--cta-primary);color:#fff!important;box-shadow:0 2px 4px rgba(37,99,235,.2)}.btn--primary:hover{background-color:var(--cta-primary-hover);box-shadow:0 4px 8px rgba(37,99,235,.3);transform:translateY(-1px)}.btn--secondary{background-color:var(--bg-card);color:var(--accent)!important;border-color:var(--border-default)}.btn--secondary:hover{background-color:var(--bg-highlight);border-color:var(--accent)}.btn--sm{padding:.5rem .9rem;font-size:var(--text-label)}.btn--lg{padding:.9rem 1.8rem;font-size:18px}.badge{display:inline-flex;align-items:center;gap:.25rem;padding:.2rem .55rem;border-radius:var(--radius-sm);font-size:var(--text-caption);font-weight:var(--weight-medium);line-height:1.2}.badge--measured{background-color:#dbeafe;color:#1e40af}.badge--vendor{background-color:#f3e8ff;color:#6b21a8}.badge--unverified{background-color:#f3f4f6;color:#4b5563}.badge--promo{background-color:#fef3c7;color:#92400e;font-weight:var(--weight-semibold)}.badge--clash{background-color:#dcfce7;color:#166534}.badge--rank{font-family:var(--font-mono);font-weight:var(--weight-bold);font-size:var(--text-label);padding:.25rem .6rem;border-radius:9999px;background:var(--bg-subtle);color:var(--text-primary);border:1px solid var(--border-default)}.badge--rank-1{background:#fef3c7;color:#92400e;border-color:#f59e0b}.commercial-disclosure{display:flex;align-items:center;gap:.6rem;background-color:var(--bg-subtle);border:1px dashed var(--border-strong);border-radius:var(--radius-md);padding:.6rem .9rem;margin:.75rem 0;font-size:var(--text-caption);color:var(--text-muted)}.promo-copy-box{display:inline-flex;align-items:center;background:var(--bg-subtle);border:1px solid var(--border-default);border-radius:var(--radius-sm);padding:.25rem .5rem;gap:.4rem}.promo-copy-box code{font-family:var(--font-mono);font-weight:var(--weight-bold);color:var(--text-primary)}.copy-btn{background:0 0;border:none;color:var(--accent);font-size:12px;cursor:pointer;padding:.15rem .4rem;border-radius:3px;transition:all .15s ease}.copy-btn:hover{background:var(--accent-subtle)}.price-tag{display:inline-flex;align-items:baseline;gap:.2rem}.price-tag__num{font-family:var(--font-mono);font-size:var(--text-price);font-weight:var(--weight-bold);color:var(--text-primary);font-variant-numeric:tabular-nums}.price-tag__unit{font-size:var(--text-caption);color:var(--text-muted)}.faq-accordion{margin:1.5rem 0}.faq-item{border:1px solid var(--border-default);border-radius:var(--radius-md);margin-bottom:.75rem;overflow:hidden;background:#fff;transition:border-color .2s ease,box-shadow .2s ease}.faq-item:hover{border-color:#cbd5e1}.faq-item.is-open{border-color:#3b82f6;box-shadow:0 2px 8px rgba(59,130,246,8%)}.faq-item__question{width:100%;text-align:left;background:0 0;border:none;padding:1.1rem 1.25rem;font-size:16px;font-weight:var(--weight-semibold);color:var(--text-primary);cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background-color .15s ease;user-select:none;-webkit-tap-highlight-color:transparent}.faq-item__question:hover{background-color:#f8fafc}.faq-item__icon{display:inline-block;font-size:12px;color:var(--text-muted);transition:transform .25s cubic-bezier(.4,0,.2,1),color .2s ease;margin-left:.75rem;flex-shrink:0}.faq-item.is-open .faq-item__icon{transform:rotate(180deg);color:#2563eb}.faq-item__answer{padding:.85rem 1.25rem 1.25rem;font-size:15px;color:var(--text-body);line-height:var(--leading-normal);display:none;border-top:1px dashed #e2e8f0}.faq-item.is-open .faq-item__answer{display:block;animation:faqFadeIn .2s ease}@keyframes faqFadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.sister-site-box{background:var(--bg-subtle);border:1px solid var(--border-default);border-radius:var(--radius-md);padding:1.2rem;margin:2rem 0;display:flex;flex-direction:column;gap:.6rem}.sister-site-box__item{display:flex;align-items:center;justify-content:space-between}.article-container{max-width:var(--article-max);margin-left:auto;margin-right:auto}.article-header{margin-bottom:2rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border-default)}.article-title{font-size:var(--text-h1);font-weight:var(--weight-bold);line-height:var(--leading-tight);color:var(--text-primary);margin-bottom:1rem}.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:1rem;font-size:var(--text-meta);color:var(--text-muted)}.article-content{font-size:var(--text-body);line-height:var(--leading-relaxed);color:var(--text-body)}.article-content h2{font-size:var(--text-h2);font-weight:var(--weight-bold);line-height:var(--leading-snug);color:var(--text-primary);margin-top:2.5rem;margin-bottom:1rem;padding-bottom:.5rem;border-bottom:1px solid var(--border-subtle)}.article-content h3{font-size:var(--text-h3);font-weight:var(--weight-semibold);line-height:var(--leading-snug);color:var(--text-primary);margin-top:1.8rem;margin-bottom:.8rem}.article-content h4{font-size:var(--text-h4);font-weight:var(--weight-semibold);margin-top:1.4rem;margin-bottom:.6rem}.article-content p{margin-bottom:1.4em}.article-content ul,.article-content ol{margin-bottom:1.4em;padding-left:1.6em}.article-content li{margin-bottom:.5em}.article-content blockquote{border-left:4px solid var(--accent);background:var(--bg-subtle);padding:1rem 1.4rem;margin:1.5em 0;border-radius:0 var(--radius-md)var(--radius-md)0;color:var(--text-body);font-size:var(--text-body)}.article-content pre{background:#1e293b;color:#f8fafc;padding:1.25rem;border-radius:var(--radius-md);overflow-x:auto;font-family:var(--font-mono);font-size:14px;line-height:1.6;margin:1.5em 0}.article-content code{font-family:var(--font-mono);font-size:.9em;background:var(--bg-elevated);padding:.15em .4em;border-radius:3px;color:#b91c1c}.article-content pre code{background:0 0;padding:0;color:inherit}.toc-box{background:var(--bg-subtle);border:1px solid var(--border-default);border-radius:var(--radius-md);padding:1.25rem 1.5rem;margin:1.8em 0}.toc-box__title{font-size:15px;font-weight:var(--weight-semibold);color:var(--text-primary);margin-bottom:.75rem}.toc-box ul{list-style:none;padding-left:.8rem;margin-bottom:0}.toc-box li{margin-bottom:.4rem;font-size:14px}.toc-box a{color:var(--text-body)}.toc-box a:hover{color:var(--accent)}.article-related-links{margin-top:3rem;padding-top:2rem;border-top:1px solid var(--border-default)}.article-related-links__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.5rem;margin-top:1rem}.related-link-card{border:1px solid var(--border-default);border-radius:var(--radius-md);padding:1.2rem;background:#fff;transition:transform .15s ease,box-shadow .15s ease}.related-link-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm);border-color:var(--accent)}.brand-card{background:var(--bg-card);border:1px solid var(--border-default);border-radius:var(--radius-lg);padding:1.5rem;margin-bottom:1.5rem;box-shadow:var(--shadow-sm);transition:all .2s ease;position:relative;display:flex;flex-direction:column;gap:1rem}.brand-card:hover{box-shadow:var(--shadow-md);border-color:var(--accent)}.brand-card--primary{border:2px solid var(--border-primary);background:linear-gradient(180deg,#ffffff 0%,#fffdf5 100%);box-shadow:0 4px 12px rgba(245,158,11,.12)}.brand-card__header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.75rem}.brand-card__title-wrap{display:flex;align-items:center;gap:.75rem}.brand-card__title{font-size:22px;font-weight:var(--weight-bold);color:var(--text-primary)}.brand-card__price-box{display:flex;align-items:baseline;gap:.3rem}.brand-card__features{list-style:none;display:flex;flex-direction:column;gap:.45rem;margin:.25rem 0}.brand-card__features li{display:flex;align-items:flex-start;gap:.5rem;font-size:15px;color:var(--text-body)}.brand-card__features li::before{content:"✓";color:var(--status-success);font-weight:700}.brand-card__actions{display:flex;align-items:center;flex-wrap:wrap;gap:.75rem;padding-top:.75rem;border-top:1px solid var(--border-subtle)}.brand-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:1.5rem;margin:2rem 0}@media(max-width:640px){.brand-grid{grid-template-columns:1fr}}.compare-table-wrapper{width:100%;overflow-x:auto;margin:2rem 0;border:1px solid var(--border-default);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);background:#fff}.compare-table{width:100%;border-collapse:collapse;font-size:14px}.compare-table th,.compare-table td{padding:1rem;text-align:left;border-bottom:1px solid var(--border-subtle);border-right:1px solid var(--border-subtle)}.compare-table th{background:var(--bg-subtle);font-weight:var(--weight-semibold);color:var(--text-primary);white-space:nowrap}.compare-table tr:hover td{background:var(--bg-subtle)}.compare-table td.numeric{font-family:var(--font-mono);font-variant-numeric:tabular-nums}.tldr{background:var(--accent-subtle);border-left:4px solid var(--accent);padding:1.2em 1.5em;margin:1.8em 0;border-radius:0 10px 10px 0;font-size:var(--text-body);line-height:var(--leading-relaxed);color:var(--text-primary);box-shadow:0 1px 3px rgba(37,99,235,5%)}.tldr strong{color:var(--accent);font-weight:var(--weight-bold)}.answer-block{background:var(--bg-subtle);border-left:3px solid var(--accent);padding:1em 1.25em;margin:1.2em 0;border-radius:0 8px 8px 0;font-size:var(--text-body);line-height:var(--leading-normal)}.answer-block::before{content:"直接答案";display:block;font-size:12px;font-weight:var(--weight-semibold);color:var(--accent);text-transform:uppercase;letter-spacing:.06em;margin-bottom:.4em}.data-sources{background:var(--bg-subtle);border:1px solid var(--border-default);border-radius:var(--radius-md);padding:1.5rem;margin:2.5rem 0 1.5rem}.data-sources h3{font-size:16px;font-weight:var(--weight-bold);color:var(--text-primary);margin-bottom:.8rem}.data-sources table{width:100%;border-collapse:collapse;font-size:13px;margin-bottom:.75rem}.data-sources th,.data-sources td{padding:.6rem .8rem;text-align:left;border-bottom:1px solid var(--border-default)}.data-sources th{background:var(--bg-card);color:var(--text-primary)}.data-sources p{font-size:12px;color:var(--text-muted);margin-bottom:0}.data-table-container{width:100%;overflow-x:auto;margin:1.8em 0;border:1px solid var(--border-default);border-radius:var(--radius-md)}.data-table{width:100%;border-collapse:collapse;font-size:14px;background:#fff}.data-table th{background:var(--bg-subtle);font-weight:var(--weight-semibold);text-align:left;padding:.85em 1em;border-bottom:1px solid var(--border-default);color:var(--text-primary);font-size:13px;white-space:nowrap}.data-table td{padding:.85em 1em;border-bottom:1px solid var(--border-subtle);color:var(--text-body)}.data-table tr:hover{background:var(--bg-subtle)}.data-table td.numeric{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-weight:var(--weight-medium)}.data-table caption{caption-side:bottom;font-size:12px;color:var(--text-muted);text-align:left;padding:.6em 1em;background:var(--bg-subtle);border-top:1px solid var(--border-subtle)}.hero{padding:3rem 0 2rem;text-align:center;background:radial-gradient(50% 50% at 50% 0%,#eff6ff 0%,#ffffff 100%);border-bottom:1px solid var(--border-subtle);margin-bottom:2.5rem}.hero__badge{display:inline-flex;align-items:center;gap:.4rem;padding:.35rem .9rem;border-radius:9999px;background:#dbeafe;color:#1e40af;font-size:13px;font-weight:var(--weight-semibold);margin-bottom:1.25rem}.hero__title{font-size:clamp(28px,4vw,42px);font-weight:800;line-height:1.2;color:var(--text-primary);margin-bottom:1.2rem;letter-spacing:-.02em}.hero__subtitle{font-size:var(--text-lead);color:var(--text-muted);max-width:720px;margin:0 auto 1.8rem;line-height:1.6}.hero__cta{display:flex;justify-content:center;gap:1rem;margin-bottom:2rem}.hero__features{display:flex;justify-content:center;flex-wrap:wrap;gap:1.5rem;list-style:none;font-size:14px;color:var(--text-muted)}.hero__features li{display:flex;align-items:center;gap:.4rem}.hero__features li::before{content:"•";color:var(--accent);font-weight:700}.scene-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.25rem;margin:1.5rem 0}.scene-card{border:1px solid var(--border-default);border-radius:var(--radius-lg);padding:1.5rem;background:#fff;transition:transform .2s ease,box-shadow .2s ease;display:flex;flex-direction:column;justify-content:space-between}.scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--accent)}.scene-card__title{font-size:18px;font-weight:var(--weight-bold);color:var(--text-primary);margin-bottom:.5rem}.scene-card__desc{font-size:14px;color:var(--text-muted);margin-bottom:1rem}.scene-card__recom{font-size:13px;font-weight:var(--weight-medium);color:var(--accent);margin-bottom:1.2rem}