@charset "UTF-8";
:root{--bg:#f5fbff;--white:#fff;--soft:#eaf7fc;--light:#dff5fb;--cyan:#25c8d1;--sky:#25b6e8;--blue:#1787db;--navy:#174b78;--dark:#173b60;--text:#2d4359;--muted:#687f93;--border:#dcebf3;--max:1160px;--shadow:0 16px 42px rgba(23,75,120,.075)}
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}button{font:inherit;cursor:pointer}img{max-width:100%}h1,h2,h3{color:var(--dark);line-height:1.36;margin:0 0 .65em}h1{font-size:clamp(27px,3.4vw,40px);letter-spacing:-.6px}h2{font-size:clamp(20px,2.3vw,26px)}h3{font-size:19px}p{margin:.5em 0 1.2em}.container{max-width:var(--max);padding:0 24px;margin:0 auto}.skip-link{position:absolute;left:-9999px;top:0;z-index:100;background:#fff;padding:12px}.skip-link:focus{left:12px}.site-header{background:rgba(255,255,255,.97);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50;box-shadow:0 2px 12px rgba(23,75,120,.04)}.header-wrap{display:flex;align-items:center;gap:20px;min-height:72px}.brand{flex:0 0 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20px;background:var(--soft);display:flex;justify-content:space-between;align-items:center}.drawer-close{border:0;background:transparent;font-size:30px;line-height:1;color:var(--dark)}.drawer nav{padding:12px 20px 30px}.drawer nav p{color:var(--muted);font-size:13px;font-weight:800;margin:19px 0 6px}.drawer nav a{display:block;padding:9px 12px;border-radius:9px;color:var(--dark)}.drawer nav a:hover{background:var(--soft)}.page{padding:48px 0 76px}.hero{display:grid;grid-template-columns:1.12fr .88fr;align-items:center;gap:42px;padding:54px 0 60px}.hero-copy{max-width:640px}.eyebrow{color:var(--blue);text-transform:uppercase;font-size:13px;letter-spacing:2px;font-weight:800;margin:0 0 12px}.lede{font-size:17px;color:var(--text);line-height:1.85}.hero-copy .lede{max-width:600px}.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:24px}.text-link{display:inline-flex;align-items:center;padding:8px 4px;color:var(--navy);font-weight:700}.hero-note{font-size:13px;color:var(--muted);margin-top:23px}.media{display:flex;align-items:center;justify-content:center;min-height:180px;width:100%;overflow:hidden;background:linear-gradient(135deg,#dff5fb,#eaf7fc);border:1px solid var(--border);border-radius:15px}.media img{display:block;width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;object-position:center}.media-fallback{color:#39728f;text-align:center;max-width:75%;line-height:1.6;font-size:15px;font-weight:700}.hero-media{height:320px}.feature-media{height:215px}.visual-media{height:190px}.wide-media{height:248px}.portrait-media{height:310px}.content-section{margin-top:48px}.section-head{max-width:810px;margin-bottom:22px}.section-head>p:last-child{color:var(--muted)}.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.two-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.card{background:#fff;border:1px solid var(--border);border-radius:15px;padding:24px;box-shadow:var(--shadow);min-width:0}.card h3{margin-top:0}.card p{color:var(--muted);font-size:15px}.card a{font-weight:700}.category-card{position:relative;min-height:190px;display:flex;flex-direction:column;align-items:flex-start}.category-card .tag{font-size:12px;color:var(--blue);font-weight:800;letter-spacing:1.3px}.category-card>a{margin-top:auto}.feature-strip{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:center;padding:30px;background:#fff;border:1px solid var(--border);border-radius:18px}.feature-strip.reverse .media{order:-1}.feature-strip h2{margin-top:6px}.pill{display:inline-block;font-size:12px;color:var(--navy);background:var(--light);padding:3px 12px;border-radius:99px;margin-bottom:10px;font-weight:800}.link-list{list-style:none;padding:0;margin:0;border-top:1px solid var(--border)}.link-list li{border-bottom:1px solid var(--border);padding:14px 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0}.topic-block{margin:34px 0}.subtle-panel{background:var(--soft);border:1px solid var(--border);border-radius:15px;padding:25px}.data-table{width:100%;border-collapse:collapse;margin:20px 0 28px;background:#fff;font-size:15px}.data-table th,.data-table td{border:1px solid var(--border);padding:13px 15px;text-align:left;vertical-align:top}.data-table th{background:var(--soft);color:var(--dark)}.data-table caption{text-align:left;font-weight:800;margin:10px 0;color:var(--dark)}.steps{counter-reset:step;list-style:none;padding:0}.steps li{counter-increment:step;padding:14px 15px 14px 58px;position:relative;background:#fff;border:1px solid var(--border);border-radius:12px;margin:12px 0}.steps li::before{content:counter(step);position:absolute;left:16px;top:14px;color:white;background:var(--blue);width:28px;height:28px;border-radius:50%;text-align:center;line-height:28px;font-weight:700}.timeline{border-left:3px solid var(--cyan);margin:24px 0 30px 12px;padding-left:28px}.timeline-item{position:relative;padding:0 0 20px}.timeline-item::before{content:'';position:absolute;left:-36px;top:10px;width:13px;height:13px;border-radius:50%;background:var(--blue);border:3px solid #fff}.timeline-item h3{margin:0 0 4px}.timeline-item p{margin:0}.related{margin-top:49px;background:var(--soft);border-radius:16px;padding:25px}.related-links{display:flex;gap:12px;flex-wrap:wrap}.related-links a{padding:9px 15px;border-radius:9px;border:1px solid #b9dce9;background:#fff;color:var(--navy);font-weight:700}.site-footer{background:#123653;color:#eaf7ff;padding:48px 0 20px}.site-footer h2{font-size:17px;color:#fff}.site-footer a{color:#eaf7ff}.site-footer p{font-size:14px;color:#d2e4ef}.footer-grid{display:grid;grid-template-columns:1.2fr 1fr .9fr;gap:42px}.footer-brand{font-size:23px;font-weight:900}.footer-brand span{font-size:12px;letter-spacing:1.2px}.footer-links{display:grid;grid-template-columns:repeat(2,1fr);gap:4px 18px;font-size:14px}.footer-bottom{display:flex;justify-content:space-between;gap:12px;border-top:1px solid #315670;padding-top:16px;margin-top:33px;font-size:12px;color:#c4d9e8}.mobile-bottom{display:none}.back-to-top{position:fixed;bottom:24px;right:24px;border:0;color:#fff;background:var(--blue);width:42px;height:42px;border-radius:50%;z-index:20;box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none}.back-to-top.visible{opacity:1;visibility:visible;pointer-events:auto}.accordion details{background:#fff;border:1px solid var(--border);border-radius:12px;padding:13px 19px;margin:10px 0}.accordion summary{color:var(--dark);cursor:pointer;font-weight:700}.accordion details p{margin:9px 0 3px}.tagline{border-bottom:1px solid var(--border);padding-bottom:25px}.visual-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.visual-entry{border:1px solid var(--border);background:#fff;border-radius:15px;overflow:hidden}.visual-entry .media{border:0;border-radius:0}.visual-entry>div:last-child{padding:18px 22px}.visual-entry p{font-size:14px;color:var(--muted)}.split-copy{display:grid;grid-template-columns:2fr 1fr;gap:28px}.small-note{font-size:13px;color:var(--muted)}
@media(max-width:1100px){.desktop-nav a{padding-left:6px;padding-right:6px;font-size:13px}.header-wrap{gap:12px}.brand{min-width:120px}}@media(max-width:980px){.header-wrap{min-height:60px;display:grid;grid-template-columns:40px 1fr auto;gap:8px}.menu-button{display:flex}.desktop-nav{display:none}.brand{justify-self:center;max-width:160px;min-width:0}.brand img{max-height:30px}.brand-text{font-size:22px}.header-action{height:39px;padding:0 14px;min-width:72px;font-size:13px}.hero{gap:24px}.article-layout{grid-template-columns:1fr}.side-panel{position:static}.footer-grid{gap:22px}.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:640px){body{font-size:15px;line-height:1.8}.container{padding-left:16px;padding-right:16px}.page{padding:29px 0 72px}.hero{display:flex;flex-direction:column-reverse;align-items:stretch;padding:22px 0 36px;gap:23px}.hero-media{height:205px}.hero-copy{max-width:none}.lede{font-size:15.5px}.hero-actions{margin-top:18px}.content-section{margin-top:31px}.section-head{margin-bottom:17px}.card-grid,.two-grid,.visual-grid,.feature-strip,.split-copy{grid-template-columns:1fr}.card{padding:20px}.category-card{min-height:155px}.feature-strip{padding:17px;gap:16px}.feature-strip.reverse .media{order:0}.feature-media{height:165px}.visual-media{height:160px}.wide-media{height:185px}.portrait-media{height:250px}.article h2{margin-top:29px}.data-table{font-size:13px}.data-table td,.data-table th{padding:9px}.footer-grid{grid-template-columns:1fr;gap:16px}.footer-bottom{flex-direction:column;margin-top:22px}.site-footer{padding-bottom:75px}.mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;z-index:45;background:#fff;border-top:1px solid var(--border);min-height:56px;padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{display:flex;justify-content:center;align-items:center;color:var(--navy);font-size:13px;font-weight:700}.mobile-bottom a[aria-current]{color:var(--blue);background:var(--soft)}.back-to-top{bottom:76px;right:15px;width:38px;height:38px}.related{padding:18px}.link-list li{flex-direction:column;gap:0}.footer-brand{font-size:20px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}