@font-face{font-family:Inter;font-style:normal;font-weight:400;font-display:optional;src:url(/_astro/inter-latin-400-normal.C38fXH4l.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Inter;font-style:normal;font-weight:400;font-display:optional;src:url(/_astro/inter-latin-ext-400-normal.C1nco2VV.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter;font-style:normal;font-weight:400;font-display:optional;src:url(/_astro/inter-cyrillic-400-normal.obahsSVq.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Inter;font-style:normal;font-weight:600;font-display:optional;src:url(/_astro/inter-latin-600-normal.LgqL8muc.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Inter;font-style:normal;font-weight:600;font-display:optional;src:url(/_astro/inter-latin-ext-600-normal.D2bJ5OIk.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter;font-style:normal;font-weight:600;font-display:optional;src:url(/_astro/inter-cyrillic-600-normal.CWCymEST.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Inter Tight;font-style:normal;font-weight:700;font-display:optional;src:url(/_astro/inter-tight-latin-700-normal.BZKd_v_8.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Inter Tight;font-style:normal;font-weight:700;font-display:optional;src:url(/_astro/inter-tight-latin-ext-700-normal.BpKPOkj3.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter Tight;font-style:normal;font-weight:700;font-display:optional;src:url(/_astro/inter-tight-cyrillic-700-normal.DtWWjp29.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}:root{--bg:#fff;--ink:#0b0d0e;--muted:#5b6265;--line:#e4e6e6;--soft:#f6f7f7;--accent:#0b6e4f;--accent-ink:#fff;--accent-soft:#eef6f2;--warn-soft:#fff6e5;--warn-ink:#7a4b00;--radius:18px;--wrap:1120px;--sans:"Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--display:"Inter Tight", "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--zh:"PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;color-scheme:light dark}@media (prefers-color-scheme:dark){:root{--bg:#0b0d0e;--ink:#f2f3f3;--muted:#a3abae;--line:#263033;--soft:#15191a;--accent:#3fb68b;--accent-ink:#06130e;--accent-soft:#12261f;--warn-soft:#2a2110;--warn-ink:#f2c46d}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--ink);font:400 17px/1.6 var(--sans);margin:0}:lang(zh) body,:lang(zh) h1,:lang(zh) h2,:lang(zh) h3{font-family:var(--sans), var(--zh);letter-spacing:0}a{color:var(--accent);text-underline-offset:2px}a:hover{text-decoration-thickness:2px}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}img{max-width:100%;height:auto}h1,h2,h3{font-family:var(--display);letter-spacing:-.03em;margin:0;font-weight:700;line-height:1.12}h1{font-size:clamp(36px,6vw,64px)}h2{margin-top:56px;font-size:clamp(24px,3.2vw,32px)}h3{letter-spacing:-.015em;margin-top:28px;font-size:20px}p,ul,ol{margin:16px 0 0}li+li{margin-top:6px}.wrap{max-width:var(--wrap);margin:0 auto;padding:0 16px}@media (width>=768px){.wrap{padding:0 24px}}.skip{position:absolute;left:-9999px}.skip:focus{z-index:10;background:var(--bg);padding:10px 14px;top:8px;left:16px}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.site-header{border-bottom:1px solid var(--line);background:var(--bg);z-index:5;position:relative}.header-row{align-items:center;gap:16px;min-height:68px;display:flex}.brand{color:var(--ink);font:700 18px var(--display);letter-spacing:-.02em;align-items:center;gap:10px;min-height:44px;text-decoration:none;display:inline-flex}.brand img{width:30px;height:30px}.main-nav{gap:4px;margin-left:auto;display:none}.main-nav a{color:var(--ink);border-radius:999px;align-items:center;min-height:44px;padding:10px 12px;font-size:15px;text-decoration:none;display:inline-flex}.main-nav a:hover,.main-nav a[aria-current]{background:var(--soft)}.header-actions{align-items:center;gap:8px;margin-left:auto;display:flex}@media (width>=900px){.main-nav{display:flex}.header-actions{margin-left:8px}.menu-btn{display:none}}.menu-btn{background:var(--soft);width:44px;height:44px;color:var(--ink);cursor:pointer;border:0;border-radius:999px;place-items:center;display:inline-grid}.menu-icon{gap:4px;display:grid}.menu-icon span{background:currentColor;border-radius:2px;width:18px;height:2px;display:block}.mobile-menu{background:var(--bg);border-bottom:1px solid var(--line);position:absolute;top:100%;left:0;right:0;box-shadow:0 12px 24px #00000014}.mobile-menu ul{margin:0;padding:8px 16px 16px;list-style:none}.mobile-menu a{min-height:48px;color:var(--ink);border-bottom:1px solid var(--line);align-items:center;font-weight:600;text-decoration:none;display:flex}.lang-switch{position:relative}.lang-switch summary{cursor:pointer;background:var(--soft);border-radius:999px;align-items:center;gap:6px;min-height:44px;padding:0 14px;font-size:14px;list-style:none;display:inline-flex}.lang-switch summary::-webkit-details-marker{display:none}.lang-switch ul{background:var(--bg);border:1px solid var(--line);border-radius:14px;min-width:170px;margin:0;padding:6px;list-style:none;position:absolute;top:calc(100% + 6px);right:0;box-shadow:0 12px 24px #0000001a}.lang-switch li+li{margin:0}.lang-switch a{min-height:44px;color:var(--ink);border-radius:10px;align-items:center;padding:0 12px;text-decoration:none;display:flex}.lang-switch a[aria-current]{background:var(--accent-soft);font-weight:600}.btn{cursor:pointer;border:0;border-radius:999px;justify-content:center;align-items:center;gap:8px;min-height:48px;padding:0 22px;font-size:15px;font-weight:600;text-decoration:none;display:inline-flex}.btn-primary{background:var(--ink);color:var(--bg)}.btn-accent{background:var(--accent);color:var(--accent-ink)}.btn-soft{background:var(--soft);color:var(--ink)}.eyebrow{color:var(--accent);font:600 12px/1 var(--sans);letter-spacing:.14em;text-transform:uppercase;align-items:center;gap:12px;margin:0;display:flex}.eyebrow:before{content:"";background:currentColor;width:28px;height:2px}:lang(zh) .eyebrow{letter-spacing:.04em}.reported{background:var(--warn-soft);color:var(--warn-ink);vertical-align:2px;border-radius:999px;margin-left:6px;padding:1px 8px;font-size:12px;font-weight:600;display:inline-block}.conflict{color:var(--muted);margin-top:4px;font-size:13px;font-weight:400;display:block}sup.ref{margin-left:2px;font-size:11px}sup.ref a{text-decoration:none}.hero{padding:64px 0 40px}.hero h1{letter-spacing:-.045em;max-width:14ch;margin-top:20px;font-size:clamp(44px,8vw,92px);line-height:1}.hero h1 em{color:var(--accent);font-style:normal}.hero .sub{max-width:560px;color:var(--muted);margin-top:22px;font-size:19px}.cta-row{flex-wrap:wrap;gap:12px;margin-top:28px;display:flex}.tiles{grid-template-columns:1fr;gap:12px;margin-top:44px;display:grid}@media (width>=640px){.tiles{grid-template-columns:repeat(2,1fr)}}@media (width>=1000px){.tiles{grid-template-columns:repeat(4,1fr)}}.tile{border-radius:var(--radius);background:var(--soft);color:var(--ink);min-height:44px;padding:20px;text-decoration:none;display:block}.tile:first-child{background:var(--accent);color:var(--accent-ink)}.tile b{font:700 18px/1.2 var(--display);letter-spacing:-.01em;display:block}.tile span{opacity:.8;margin-top:6px;font-size:14px;display:block}.home-section{margin-top:72px}.home-section>h2{margin-top:12px}.split{grid-template-columns:1fr;align-items:start;gap:24px;margin-top:24px;display:grid}@media (width>=900px){.split{grid-template-columns:380px 1fr}}.method{grid-template-columns:1fr;gap:12px;margin-top:20px;display:grid}@media (width>=768px){.method{grid-template-columns:repeat(3,1fr)}}.method div{border:1px solid var(--line);border-radius:var(--radius);padding:20px}.method b{font:700 17px var(--display);display:block}.article{padding-bottom:40px}.article>h1{max-width:20ch;margin-top:16px}.crumbs{color:var(--muted);flex-wrap:wrap;align-items:center;gap:6px;margin-top:24px;font-size:14px;display:flex}.crumbs a{color:var(--muted);align-items:center;min-height:32px;display:inline-flex}.lead{color:var(--muted);max-width:720px;margin-top:18px;font-size:20px}.updated{color:var(--muted);margin-top:12px;font-size:14px}.translated{background:var(--soft);border-radius:12px;max-width:720px;margin-top:12px;padding:10px 14px;font-size:14px}.body{max-width:760px}.answer{font-size:18px;font-weight:500}.key-facts{border:1px solid var(--line);border-radius:var(--radius);background:var(--bg);max-width:760px;margin-top:28px;padding:22px}.key-facts h2{letter-spacing:.12em;text-transform:uppercase;color:var(--accent);font-size:13px;font-family:var(--sans);margin:0 0 14px;font-weight:600}:lang(zh) .key-facts h2{letter-spacing:.04em}.key-facts dl{grid-template-columns:minmax(96px,34%) 1fr;gap:10px 12px;margin:0;display:grid}.key-facts dt{color:var(--muted)}.key-facts dd{margin:0;font-weight:600}.key-facts .note{color:var(--muted);border-top:1px solid var(--line);margin-top:16px;padding-top:14px;font-size:13px}.official-cta{margin-top:20px}.toc{background:var(--soft);border-radius:var(--radius);max-width:760px;margin-top:32px;padding:18px 22px}.toc p{margin:0;font-size:14px;font-weight:600}.toc ol{margin:8px 0 0;padding-left:20px}.toc a{padding:4px 0;display:inline-block}.section{max-width:760px}.steps{counter-reset:step;padding-left:0;list-style:none}.steps li{counter-increment:step;margin-top:20px;padding-left:48px;position:relative}.steps li:before{content:counter(step);background:var(--accent-soft);width:32px;height:32px;color:var(--accent);border-radius:50%;place-items:center;font-weight:700;display:grid;position:absolute;top:0;left:0}.steps h3{margin:0;font-size:18px}.steps p{margin-top:6px}.table-wrap{margin-top:20px}.data-table{border-collapse:collapse;width:100%;font-size:15px}.data-table caption{text-align:left;padding-bottom:10px;font-weight:600}.data-table th,.data-table td{text-align:left;border-top:1px solid var(--line);vertical-align:top;padding:12px 10px}.data-table thead th{letter-spacing:.08em;text-transform:uppercase;color:var(--muted);border-top:0;font-size:12px;font-weight:600}.data-table td.num{font-variant-numeric:tabular-nums;white-space:nowrap;font-weight:600}.data-table tbody tr:first-child{background:var(--accent-soft)}.data-table.plain tbody tr:first-child{background:0 0}@media (width<=767px){.data-table thead{display:none}.data-table,.data-table tbody,.data-table tr,.data-table th,.data-table td{width:100%;display:block}.data-table tr{border:1px solid var(--line);border-radius:14px;margin-top:12px;padding:6px 14px}.data-table th[scope=row]{border-top:0;padding:10px 0 6px;font-size:17px}.data-table td{grid-template-columns:44% 1fr;gap:8px;padding:8px 0;display:grid}.data-table td:before{content:attr(data-label);color:var(--muted);font-weight:400}}.sort-row{flex-wrap:wrap;gap:8px;margin-top:16px;display:flex}.sort-row button{border:1px solid var(--line);background:var(--bg);min-height:44px;color:var(--ink);font:600 14px var(--sans);cursor:pointer;border-radius:999px;padding:0 16px}.sort-row button[aria-pressed=true]{background:var(--ink);color:var(--bg);border-color:var(--ink)}.table-note{color:var(--muted);font-size:14px}.vs-facts{border-collapse:collapse;width:100%;max-width:760px;margin-top:28px;font-size:15px}.vs-facts th,.vs-facts td{border-top:1px solid var(--line);text-align:left;vertical-align:top;padding:12px 10px}.vs-facts thead th{font:700 17px var(--display);border-top:0}.vs-facts tbody th{color:var(--muted);width:30%;font-weight:400}.vs-facts td{width:35%;font-weight:600}@media (width<=480px){.vs-facts{font-size:14px}.vs-facts th,.vs-facts td{padding:10px 6px}}.op-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;margin-top:18px;display:grid}.op-grid a{background:var(--soft);min-height:52px;color:var(--ink);border-radius:14px;align-items:center;padding:0 16px;font-weight:600;text-decoration:none;display:flex}.op-grid a:hover{background:var(--accent-soft)}.op-grid a.other{border:1px dashed var(--line);background:0 0;font-weight:400}.calc{border:1px solid var(--line);border-radius:var(--radius);gap:16px;max-width:760px;margin-top:24px;padding:22px;display:grid}.calc label{gap:6px;font-size:15px;font-weight:600;display:grid}.calc select,.calc input{border:1px solid var(--line);background:var(--bg);min-height:48px;color:var(--ink);font:400 17px var(--sans);border-radius:12px;width:100%;padding:0 12px}.calc fieldset{border:0;flex-wrap:wrap;gap:8px;margin:0;padding:0;display:flex}.calc legend{margin-bottom:6px;font-size:15px;font-weight:600}.calc fieldset label{border:1px solid var(--line);border-radius:999px;flex-direction:row;align-items:center;gap:8px;min-height:44px;padding:0 14px;font-weight:400;display:inline-flex}.calc fieldset input{width:auto;min-height:0}.calc output{background:var(--accent-soft);font:700 22px/1.3 var(--display);border-radius:14px;padding:18px;display:block}.calc output small{font:400 15px var(--sans);color:var(--muted);margin-top:6px;display:block}.faq details{border-top:1px solid var(--line);max-width:760px}.faq details:last-of-type{border-bottom:1px solid var(--line)}.faq summary{cursor:pointer;min-height:44px;padding:16px 0;font-weight:600;list-style-position:outside}.faq details p{margin:0 0 16px}.sources{max-width:760px}.sources ol{color:var(--muted);padding-left:22px;font-size:14px}.sources .tag{background:var(--accent-soft);color:var(--accent);border-radius:6px;margin-left:4px;padding:0 6px;font-size:11px;font-weight:600;display:inline-block}.cards{grid-template-columns:1fr;gap:12px;margin-top:18px;display:grid}@media (width>=768px){.cards{grid-template-columns:repeat(3,1fr)}}.card{border-radius:var(--radius);background:var(--soft);color:var(--ink);padding:20px;text-decoration:none;display:block}.card h3{margin:0;font-size:18px}.card p{color:var(--muted);margin-top:8px;font-size:14px}.site-footer{border-top:1px solid var(--line);margin-top:80px;padding:40px 0 32px;font-size:14px}.footer-grid{grid-template-columns:1fr;gap:28px;display:grid}@media (width>=768px){.footer-grid{grid-template-columns:1.3fr 1fr 1.2fr .8fr}}.site-footer h2{font:600 12px var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0}.site-footer ul{margin:10px 0 0;padding:0;list-style:none}.site-footer li+li{margin-top:0}.site-footer ul a{min-width:44px;min-height:44px;color:var(--ink);align-items:center;text-decoration:none;display:flex}.site-footer ul a:hover{text-decoration:underline}.disclaimer{color:var(--muted);margin-top:12px}.correction{margin-top:10px}.copyright{color:var(--muted);margin-top:28px}.prose{max-width:720px}main p,main li,main dd,main td,main th,main summary{overflow-wrap:anywhere}.table-wrap{overflow-x:auto}@media (width>=768px) and (width<=1023px){.data-table.compare thead{display:none}.data-table.compare,.data-table.compare tbody,.data-table.compare tr,.data-table.compare th,.data-table.compare td{width:100%;display:block}.data-table.compare tr{border:1px solid var(--line);border-radius:14px;margin-top:12px;padding:6px 14px}.data-table.compare th[scope=row]{border-top:0;padding:10px 0 6px;font-size:17px}.data-table.compare td{grid-template-columns:44% 1fr;gap:8px;padding:8px 0;display:grid}.data-table.compare td:before{content:attr(data-label);color:var(--muted);font-weight:400}}.data-table td,.data-table th{overflow-wrap:normal}.data-table thead th,.data-table.compare td.num,.data-table.compare td:nth-child(6),.data-table.compare td:nth-child(7),.data-table.compare td:nth-child(8){white-space:nowrap}.body:has(table.compare),.section:has(table.compare){max-width:none}.section:has(table.compare)>p,.section:has(table.compare)>h2,.section:has(table.compare)>ul{max-width:760px}
