:root{--bg:#F5FBFF;--white:#fff;--pale:#EAF7FC;--cyan:#25C8D1;--sky:#25B6E8;--blue:#1787DB;--navy:#174B78;--dark:#173B60;--body:#2D4359;--muted:#687F93;--border:#DCEBF3;--footer:#123653;--radius:16px;--shadow:0 12px 36px rgba(23,75,120,.07)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--body);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}img{display:block;max-width:100%}.wrap{width:min(1160px,calc(100% - 48px));margin-inline:auto}.skip-link{position:absolute;left:16px;top:-100px;background:#fff;padding:12px;z-index:50}.skip-link:focus{top:10px}.site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:30}.header-inner{height:72px;display:flex;align-items:center;gap:23px}.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:var(--dark)}.brand img{height:38px;width:auto;max-width:176px;object-fit:contain}.brand-mark{display:flex;align-items:center;justify-content:center;width:44px;height:39px;background:linear-gradient(120deg,var(--cyan),var(--blue));color:#fff;border-radius:10px;font-weight:900;letter-spacing:-1px}.brand-mark span{color:#d6ffff}.brand-words{font-size:20px;line-height:1.05;font-weight:800;white-space:nowrap}.brand-words small{font-size:9px;display:block;letter-spacing:1.6px;margin-top:5px;color:var(--blue)}.desktop-nav{display:flex;align-items:center;gap:clamp(10px,1.45vw,22px);margin-left:auto;white-space:nowrap}.desktop-nav a{font-size:14px;font-weight:650;color:var(--navy);padding:25px 0 22px;border-bottom:3px solid transparent}.desktop-nav a:hover,.desktop-nav .active{color:var(--blue);border-bottom-color:var(--cyan)}.main-btn{display:inline-flex;align-items:center;justify-content:center;min-width:82px;height:42px;padding:0 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.menu-overlay{opacity:1;visibility:visible;pointer-events:auto}body.menu-open .mobile-menu{transform:translateX(0);visibility:visible}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:20px 22px;border-bottom:1px solid var(--border);color:var(--dark)}.close-menu{border:0;background:var(--pale);font-size:27px;color:var(--navy);border-radius:50%;width:36px;height:36px}.drawer-links{display:flex;flex-direction:column;padding:12px 22px 35px}.drawer-links span{font-size:12px;letter-spacing:1px;color:var(--blue);font-weight:800;margin:21px 0 7px}.drawer-links a{padding:12px 3px;border-bottom:1px solid var(--border);color:var(--dark);font-size:15px}.eyebrow{font-size:12px;font-weight:800;letter-spacing:2px;color:#087fbc}.page-hero{padding:68px 0 58px}.page-hero .lead,.hero-copy .lead{max-width:730px;font-size:17px;line-height:1.85;color:#446078}.page-hero h1,.hero-copy h1{color:var(--dark);font-size:38px;line-height:1.35;letter-spacing:-.5px;margin:17px 0}.page-hero .hero-sub{max-width:800px}.hero-home{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:48px;padding:64px 0 46px}.hero-copy h1{font-size:40px}.hero-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-top:27px}.text-link{color:var(--blue);font-weight:750;padding:11px}.media{display:flex;align-items:center;justify-content:center;overflow:hidden;background:var(--pale);border-radius:14px;width:100%}.media img{width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;object-position:center}.media-empty{background:linear-gradient(140deg,#d8f7fa,#e8f5fc 55%,#cdebf6);position:relative}.media-symbol{width:38%;aspect-ratio:1;border:2px solid rgba(23,135,219,.16);border-radius:50%;position:relative}.media-symbol:before,.media-symbol:after{content:"";position:absolute;inset:24%;border:2px solid rgba(23,135,219,.13);border-radius:50%}.media-symbol:after{inset:42%;background:rgba(37,200,209,.18)}.hero-media{height:305px}.feature-media{height:215px}.card-media{height:170px}.portrait-media{height:300px;max-width:330px}.banner-media{height:185px}.block{margin-top:36px;margin-bottom:58px}.section-heading{margin-bottom:22px}.section-heading h2{font-size:26px;line-height:1.4;color:var(--dark);margin:8px 0}.section-heading p{font-size:15px;line-height:1.8;max-width:740px;margin:8px 0}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.panel,.info-card{padding:25px;border:1px solid var(--border);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow)}.panel h3,.info-card h3{font-size:19px;line-height:1.5;margin:5px 0 12px;color:var(--dark)}.panel p,.info-card p{font-size:15px;line-height:1.8;margin:0 0 12px}.panel .subtle,.meta{font-size:12px;font-weight:800;letter-spacing:1px;color:#0986af}.panel a.learn{display:inline-flex;color:var(--blue);font-weight:750;margin-top:10px}.feature-row{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:45px;padding:26px 0}.feature-row.reverse>.media{order:2}.feature-row h2{font-size:26px;color:var(--dark);margin:8px 0 15px}.feature-row p{line-height:1.85}.article{max-width:820px;margin:0 auto 52px}.article h2{font-size:25px;line-height:1.45;color:var(--dark);margin:38px 0 15px}.article h3{font-size:19px;color:var(--dark);margin:28px 0 11px}.article p,.article li{font-size:16px;line-height:1.82}.article p{margin:0 0 17px}.article ul,.article ol{padding-left:23px}.article li{margin-bottom:10px}.article .media{margin:27px 0}.article-intro{font-size:18px!important;line-height:1.85!important;color:#365a74}.note{background:#eaf7fc;border-left:4px solid var(--cyan);padding:17px 22px;border-radius:0 12px 12px 0;margin:26px 0;font-size:15px;line-height:1.8}.compare-table{width:100%;border-collapse:collapse;background:#fff;font-size:15px;line-height:1.7;margin:22px 0;border:1px solid var(--border)}.compare-table th,.compare-table td{padding:14px 17px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}.compare-table th{background:#e5f6fb;color:var(--dark);font-weight:800}.step-list{counter-reset:steps;list-style:none!important;padding:0!important}.step-list li{position:relative;padding:16px 20px 16px 67px;margin:12px 0;border:1px solid var(--border);border-radius:12px;background:#fff}.step-list li:before{counter-increment:steps;content:counter(steps,decimal-leading-zero);position:absolute;left:19px;top:17px;font-weight:800;color:var(--blue)}.topic-link{position:relative;display:flex;flex-direction:column;gap:6px;min-height:102px;background:#fff;border:1px solid var(--border);border-radius:14px;padding:19px 45px 20px 21px}.topic-link strong{color:var(--dark);font-size:17px}.topic-link span:not(.link-arrow){color:var(--muted);font-size:13px;line-height:1.7}.link-arrow{position:absolute;right:19px;top:18px;color:var(--blue);font-size:20px}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.topic-link:hover,.panel:hover{border-color:#87c8e6}.split-index{display:grid;grid-template-columns:290px 1fr;gap:40px;align-items:start}.index-side{background:#e9f6fb;border-radius:16px;padding:25px}.index-side h3{margin:0 0 13px;color:var(--dark)}.index-side a{display:block;padding:10px 0;border-bottom:1px solid #d3e8f1;color:var(--navy);font-size:14px}.index-main{display:grid;grid-template-columns:1fr 1fr;gap:18px}.quote-box{padding:28px 30px;background:var(--dark);color:#fff;border-radius:var(--radius);font-size:19px;line-height:1.7}.quote-box small{display:block;margin-top:12px;color:#a8d6ec;font-size:12px}.faq details{border-bottom:1px solid var(--border);padding:17px 0}.faq summary{font-size:16px;font-weight:750;color:var(--dark);cursor:pointer}.faq 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var(--border);background:white;color:var(--blue);border-radius:50%;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.2s;z-index:20}.back-top.show{opacity:1;visibility:visible}.mobile-bottom{display:none}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}
@media(max-width:1120px){.header-inner{gap:13px}.desktop-nav{gap:11px}.desktop-nav a{font-size:13px}.brand-words{font-size:17px}.header-cta{padding:0 14px}}
@media(max-width:980px){.desktop-nav{display:none}.menu-toggle{display:flex}.header-inner{justify-content:space-between;height:60px;gap:10px}.brand{position:absolute;left:50%;transform:translateX(-50%)}.brand img{height:29px;max-width:140px}.brand-mark{height:30px;width:33px;font-size:13px}.brand-words{font-size:16px}.brand-words small{font-size:7px}.header-cta{height:39px;min-width:74px;padding:0 12px;font-size:12px;margin-left:auto}.mobile-bottom{display:flex;position:fixed;z-index:25;bottom:0;left:0;right:0;background:white;border-top:1px solid var(--border);height:57px;align-items:center;justify-content:space-around;box-shadow:0 -4px 15px rgba(0,0,0,.025)}.mobile-bottom a{font-size:13px;font-weight:750;color:var(--navy);padding:10px}.mobile-bottom a.active{color:var(--blue)}body{padding-bottom:57px}.back-top{bottom:70px}.hero-home{gap:25px}.hero-copy h1{font-size:35px}}
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@media(max-width:360px){.brand-words{font-size:14px}.brand-mark{width:27px}.header-cta{min-width:68px;padding:0 9px}.header-inner{gap:6px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:.01ms!important}}