@import url("../assets/fonts/fonts.css?v=service-9");
:root{color-scheme:dark;--bg:#030508;--panel:#07101a;--text:#eef4fb;--muted:#aebed1;--blue:#b9d9f4;--line:#9ebad226;--warm:#f0c6a5;--font:"Polaris Inter","Polaris Sans SC","PingFang SC",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--bg)}body{margin:0;background:radial-gradient(circle at 82% 5%,#15263b55,transparent 28%),var(--bg);color:var(--text);font-family:var(--font);font-size:16px;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}p,h1,h2,h3,ul{margin:0}.skip{position:fixed;left:20px;top:-100px;background:#fff;color:#000;padding:12px 16px;z-index:20}.skip:focus{top:20px}.site-head{height:76px;padding:0 6%;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);position:relative;z-index:3}.brand{display:flex;align-items:center;gap:11px;font-size:26px;font-weight:600;letter-spacing:-.05em}.star{width:24px;height:24px;background:#e8f3ff;clip-path:polygon(50% 0,56% 43%,100% 50%,56% 57%,50% 100%,44% 57%,0 50%,44% 43%)}.site-head nav{display:flex;align-items:center;gap:28px;font-size:12px;color:#b7c7d8}.site-head nav a:hover{color:#fff}.shell{max-width:1180px;margin:auto;padding:0 6%}.hero{padding:110px 0 70px;border-bottom:1px solid var(--line)}.kicker{font-size:10px;letter-spacing:.12em;color:#9eb9d4;text-transform:uppercase}.hero h1{font-size:clamp(44px,6.2vw,88px);line-height:1.02;letter-spacing:-.052em;font-weight:500;max-width:1040px;margin-top:24px;text-wrap:balance}.hero .dek{font-size:18px;line-height:1.75;color:#bbcadd;max-width:720px;margin-top:30px}.hero-meta{display:flex;gap:24px;flex-wrap:wrap;color:#7f98b2;font-size:11px;margin-top:32px}.answer{padding:42px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:.35fr 1fr;gap:8%}.answer h2{font-size:12px;color:#9fb7d0;font-weight:500;letter-spacing:.08em;text-transform:uppercase}.answer p{font-size:22px;line-height:1.65;color:#e4edf8;max-width:790px}.article{display:grid;grid-template-columns:210px minmax(0,720px);gap:8%;padding:70px 0 95px}.toc{position:sticky;top:28px;align-self:start}.toc p{font-size:10px;letter-spacing:.1em;color:#7892ad;text-transform:uppercase;margin-bottom:14px}.toc a{display:block;font-size:12px;color:#91a7be;line-height:1.55;padding:8px 0}.toc a:hover{color:#fff}.prose section{scroll-margin-top:30px;padding-bottom:48px}.prose h2{font-size:32px;line-height:1.25;letter-spacing:-.025em;font-weight:500;margin-bottom:20px}.prose h3{font-size:20px;line-height:1.4;font-weight:500;margin:28px 0 12px}.prose p,.prose li{font-size:16px;line-height:1.85;color:#b7c7d9}.prose p+p{margin-top:16px}.prose ul{padding-left:20px;margin-top:14px}.prose li+li{margin-top:8px}.signal{border-left:2px solid var(--warm);padding:20px 24px;margin:30px 0;background:linear-gradient(90deg,#f0c6a50b,transparent)}.signal strong{display:block;font-size:18px;font-weight:500;margin-bottom:9px}.signal p{font-size:14px}.comparison{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);margin:28px 0}.comparison>div{background:#050a11;padding:24px}.comparison small{display:block;color:#7e98b4;font-size:10px;letter-spacing:.08em;margin-bottom:10px}.comparison h3{margin:0 0 10px;font-size:18px}.comparison p{font-size:14px;line-height:1.7}.faq{border-top:1px solid var(--line);padding-top:35px}.faq h3{font-size:17px;margin-top:24px}.related{border-top:1px solid var(--line);padding:55px 0 75px}.related-head{display:flex;justify-content:space-between;gap:20px;align-items:end}.related h2{font-size:30px;font-weight:500}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:30px}.related a{display:block;border-top:1px solid #b4d2ec55;padding:20px 0;min-height:130px}.related small{font-size:10px;color:#7f99b3;letter-spacing:.08em}.related strong{display:block;font-size:17px;line-height:1.5;font-weight:500;margin-top:12px}.index-hero{padding-bottom:80px}.index-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin:50px 0 90px}.index-card{background:#050a10;padding:34px;min-height:280px;display:flex;flex-direction:column;transition:background .2s}.index-card:hover{background:#08121e}.index-card .num{font-size:11px;color:#718ba6}.index-card h2{font-size:29px;line-height:1.25;font-weight:500;margin:48px 0 18px}.index-card p{font-size:14px;line-height:1.75;color:#aebfd1}.index-card span{font-size:12px;color:#bcdcf5;margin-top:auto;padding-top:25px}.foot{border-top:1px solid var(--line);padding:30px 6%;display:flex;justify-content:space-between;gap:25px;color:#849ab2;font-size:11px}.foot a:hover{color:#fff}
html[lang=zh-CN] .hero h1{letter-spacing:0;line-height:1.18;font-size:clamp(40px,5.4vw,72px)}html[lang=zh-CN] .prose h2,html[lang=zh-CN] .index-card h2{letter-spacing:0;line-height:1.45}html[lang=zh-CN] .answer p{line-height:1.8}
@media(max-width:760px){.site-head{height:66px;padding:0 7%}.brand{font-size:23px}.site-head nav a:not(.language){display:none}.shell{padding:0 7%}.hero{padding:78px 0 48px}.hero h1{font-size:42px}.hero .dek{font-size:16px}.answer{grid-template-columns:1fr;gap:14px;padding:32px 0}.answer p{font-size:19px}.article{display:block;padding:50px 0 65px}.toc{position:static;border-bottom:1px solid var(--line);padding-bottom:25px;margin-bottom:40px}.toc a{display:inline-block;margin-right:14px}.prose h2{font-size:27px}.comparison{grid-template-columns:1fr}.related-grid,.index-grid{grid-template-columns:1fr}.index-grid{margin:35px 0 65px}.index-card{min-height:230px}.index-card h2{margin-top:32px}.foot{padding:26px 7%;flex-direction:column}html[lang=zh-CN] .hero h1{font-size:36px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}