:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--page:#f4f6fb;--surface:#fff;--ink:#131722;--muted:#4b5566;--quiet:#6b7688;--line:#e1e5ec;--brand:#2563eb;--brand-deep:#1e40af;--brand-soft:#eaf1fe;--accent:#06b6d4;--warn:#b45309;--warn-soft:#fdf1e2;--radius:10px}*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--page);overflow-x:hidden}body{min-height:100vh;color:var(--ink);background:var(--page);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}a{color:inherit}h1,h2,h3,p{overflow-wrap:anywhere}.wrap{width:min(100%,820px);margin:0 auto;padding:0 24px}.site-header{z-index:50;-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line);background:#ffffffe0;position:sticky;top:0}.header-row{justify-content:space-between;align-items:center;gap:14px;padding-top:12px;padding-bottom:12px;display:flex}.logo{color:var(--brand);letter-spacing:1px;white-space:nowrap;align-items:baseline;margin:0;font-size:22px;font-weight:900;display:inline-flex}.logo a{color:inherit;text-decoration:none}.logo-tag{color:var(--quiet);letter-spacing:2px;margin-left:4px;font-size:13px;font-weight:800}.site-nav{flex-wrap:wrap;justify-content:flex-end;gap:4px 2px;display:flex}.site-nav a{color:var(--muted);white-space:nowrap;border-radius:8px;padding:6px 10px;font-size:13.5px;font-weight:800;text-decoration:none;transition:color .14s,background .14s}.site-nav a:hover,.site-nav a:focus-visible{color:var(--brand);background:var(--brand-soft);outline:none}body[data-page=home] .site-nav a[data-nav=home],body[data-page=heihua] .site-nav a[data-nav=heihua],body[data-page=dajian] .site-nav a[data-nav=dajian],body[data-page=chengben] .site-nav a[data-nav=chengben],body[data-page=jueseka] .site-nav a[data-nav=jueseka],body[data-page=duibi] .site-nav a[data-nav=duibi]{color:var(--brand);background:var(--brand-soft)}.hero{text-align:center;padding:48px 0 8px}.hero h1{letter-spacing:0;margin:0;font-size:34px;line-height:1.35}.hero .subhead{color:var(--muted);margin:14px 0 0;font-size:16px;line-height:1.8}.hero--inner{padding:40px 0 4px}.hero--inner h1{font-size:28px}.section{border-top:1px solid var(--line);padding:40px 0}.section:first-of-type{border-top:0}.section-title{letter-spacing:0;margin:0 0 16px;font-size:22px;line-height:1.35}.section p{color:var(--muted);margin:0 0 12px;font-size:15px;line-height:1.85}.section p:last-child{margin-bottom:0}.section p a,.faq-a a{color:var(--brand);border-bottom:1px solid #2563eb59;font-weight:700;text-decoration:none}.section p a:hover,.faq-a 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dd{color:var(--muted);margin:0;font-size:14px;line-height:1.75}.table-scroll{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);margin-top:20px;overflow-x:auto}.data-table{border-collapse:collapse;width:100%;min-width:560px;font-size:14px}.data-table th,.data-table td{border-bottom:1px solid var(--line);text-align:left;vertical-align:top;padding:12px 16px;line-height:1.65}.data-table th{color:var(--ink);background:var(--brand-soft);white-space:nowrap;font-weight:900}.data-table td{color:var(--muted)}.data-table tr:last-child td{border-bottom:0}.data-table td strong{color:var(--ink)}.callout{border:1px solid #2563eb40;border-left:3px solid var(--brand);border-radius:var(--radius);background:var(--brand-soft);margin-top:20px;padding:16px 18px}.callout p{color:var(--muted);margin:0;font-size:14px;line-height:1.75}.callout--warn{border-color:#b453094d;border-left-color:var(--warn);background:var(--warn-soft)}.pitfall-list{counter-reset:pitfall;gap:12px;margin:20px 0 0;padding:0;list-style:none;display:grid}.pitfall-list li{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);color:var(--muted);counter-increment:pitfall;padding:14px 16px 14px 52px;font-size:14px;line-height:1.75;position:relative}.pitfall-list li:before{color:#fff;background:var(--warn);content:counter(pitfall);border-radius:50%;place-items:center;width:24px;height:24px;font-size:12px;font-weight:900;display:inline-grid;position:absolute;top:14px;left:16px}.pitfall-list li strong{color:var(--ink)}.choice-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:20px;display:grid}.choice-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:18px}.choice-card h3{letter-spacing:0;margin:0 0 10px;font-size:16px}.choice-card ul{color:var(--muted);margin:0;padding-left:20px;font-size:14px;line-height:1.9}.cta-panel{background:radial-gradient(120% 100% at 50% 0%, var(--brand-soft) 0%, var(--surface) 60%);text-align:center;border:1px solid #2563eb2e;border-radius:16px;padding:32px;position:relative;overflow:hidden;box-shadow:0 18px 44px #2563eb1f}.cta-panel:before{background:linear-gradient(90deg, var(--accent), var(--brand), var(--brand-deep));content:"";height:3px;position:absolute;top:0;left:0;right:0}.cta-panel h2{letter-spacing:0;margin:0;font-size:22px;line-height:1.3}.cta-panel p{color:var(--muted);margin:10px 0 0;font-size:14px;line-height:1.6}.cta-button{color:#fff;background:linear-gradient(90deg, var(--brand) 0%, var(--accent) 100%);border-radius:999px;justify-content:center;align-items:center;width:100%;max-width:320px;min-height:52px;margin-top:20px;font-size:17px;font-weight:900;text-decoration:none;transition:transform .16s,box-shadow .16s;animation:2.4s ease-in-out infinite cta-pulse;display:inline-flex;position:relative;overflow:hidden;box-shadow:0 14px 30px #2563eb52}.cta-button:after{content:"";background:linear-gradient(100deg,#0000 0%,#ffffff80 50%,#0000 100%);width:60%;height:100%;animation:3s ease-in-out infinite cta-shine;position:absolute;top:0;left:0;transform:translate(-180%)skew(-18deg)}.cta-button>*{z-index:1;position:relative}.cta-button:hover,.cta-button:focus-visible{outline:none;transform:translateY(-2px)scale(1.015);box-shadow:0 20px 40px #2563eb73}@keyframes cta-pulse{0%,to{box-shadow:0 14px 30px #2563eb52}50%{box-shadow:0 16px 38px #06b6d480}}@keyframes cta-shine{0%{transform:translate(-180%)skew(-18deg)}55%,to{transform:translate(280%)skew(-18deg)}}@media (prefers-reduced-motion:reduce){.cta-button{animation:none}.cta-button:after{display:none}}.faq-list{gap:12px;margin-top:20px;display:grid}.faq-item{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:16px 18px}.faq-q{color:var(--ink);letter-spacing:0;margin:0 0 8px;font-size:15px;line-height:1.4}.faq-a{color:var(--muted);margin:0;font-size:14px;line-height:1.7}.site-footer{border-top:1px solid var(--line);margin-top:8px;padding:28px 0 40px}.footer-nav{flex-wrap:wrap;justify-content:center;gap:6px 18px;margin-bottom:18px;display:flex}.footer-nav a{color:var(--muted);font-size:13px;font-weight:800;text-decoration:none}.footer-nav a:hover,.footer-nav a:focus-visible{color:var(--brand)}.footer-copy{color:var(--quiet);text-align:center;margin:0;font-size:12.5px;line-height:1.85}.footer-copy+.footer-copy{margin-top:10px}.footer-meta{text-align:center;margin:14px 0 0}.footer-meta a{color:var(--quiet);font-size:11.5px;text-decoration:none}.footer-meta a:hover,.footer-meta a:focus-visible{color:var(--brand)}.footer-meta span{color:var(--line);margin:0 8px;font-size:11.5px}@media (width<=600px){.wrap{padding:0 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