*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#F5F8FA;color:#294356;font:16px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}a{color:#176A91;text-decoration:none}a:hover{text-decoration:underline;color:#124c6a}a:focus-visible,button:focus-visible{outline:3px solid #D1A35B;outline-offset:3px}button{font:inherit;cursor:pointer}.wrap{width:min(1120px,calc(100% - 48px));margin-inline:auto;min-width:0}.site-header{background:#fff;border-bottom:1px solid #DCE6EC}.top{height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:10px;white-space:nowrap;color:#173044;font-size:21px;font-weight:750;line-height:1.2}.brand small{display:block;font-size:10px;letter-spacing:.15em;color:#607789;margin-top:4px}.logo{max-width:140px;max-height:34px;width:auto;height:auto;object-fit:contain}.top-links{display:flex;align-items:center;gap:25px;font-size:14px}.top-links a{color:#294356}.outline,.button{display:inline-flex;min-height:44px;padding:7px 18px;align-items:center;justify-content:center;border-radius:8px;border:1px solid #176A91;font-size:14px;font-weight:650}.button{background:#176A91;color:white}.button:hover{background:#124c6a;color:#fff;text-decoration:none}.outline:hover{background:#EAF3F7;text-decoration:none}.desktop-nav{background:#EAF3F7}.nav-scroll{height:46px;display:flex;align-items:center;gap:25px;overflow-x:auto;white-space:nowrap;scrollbar-width:thin}.nav-scroll a{flex:none;font-size:14px;color:#294356}.nav-scroll a[aria-current],.mobile-menu a[aria-current]{color:#176A91;font-weight:750;border-bottom:2px solid #D1A35B}.menu-toggle,.mobile-menu,.bottom-nav{display:none}main{padding-top:36px;padding-bottom:66px;min-height:55vh}h1,h2,h3{color:#173044;line-height:1.35;margin:0 0 15px;overflow-wrap:anywhere}h1{font-size:30px}h2{font-size:23px}h3{font-size:18px}p{margin:0 0 16px}article p,.article-body p{max-width:760px}.eyebrow,.muted,.crumb,.section-note{font-size:14px;color:#607789}.crumb{margin-bottom:22px}.intro{font-size:16px;max-width:760px;color:#294356}.hero{padding:20px 0 12px}.hero h1{max-width:790px}.hero .intro{margin-bottom:22px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:27px}.hero-banner{max-width:1120px;min-height:0;max-height:280px;background:#F7F1E6;display:flex;justify-content:center;align-items:center;border-radius:12px;min-width:0}.hero-banner:empty{display:none}.hero-banner img{display:block;max-width:100%;max-height:280px;width:auto;height:auto;object-fit:contain;object-position:center}.section{margin-top:56px;min-width:0}.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:15px;margin-bottom:20px}.grid4,.grid3,.grid2,.foot-grid{display:grid;gap:18px;min-width:0}.grid4{grid-template-columns:repeat(4,minmax(0,1fr))}.grid3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid2{grid-template-columns:repeat(2,minmax(0,1fr))}.card,.panel,.article-body section,.topic-entry,.faq-item{min-width:0;background:#fff;border:1px solid #DCE6EC;border-radius:12px;padding:22px;box-shadow:0 3px 14px rgba(18,50,71,.035)}.card{display:flex;flex-direction:column;align-items:flex-start}.card p{flex:1;font-size:15px}.more{font-size:14px;font-weight:650;min-height:44px;display:inline-flex;align-items:center}.feature-grid{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:18px}.feature-side{display:grid;gap:18px}.media,.card-img{display:block;object-fit:contain;object-position:center center;max-width:100%;height:auto;width:auto;margin:0 auto 14px;max-height:240px}.card-img{max-height:170px}.media-holder{min-width:0;display:flex;justify-content:center;align-items:center}.wide-panel{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(230px,.85fr);gap:24px;align-items:center;border-radius:12px;padding:28px;background:#EAF3F7;min-width:0}.wide-panel.sand{background:#F7F1E6}.wide-panel .media{max-width:520px;max-height:240px}.wide-panel ul{padding-left:22px;margin:0}.two-articles{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:18px}.numbered{display:flex;align-items:start;gap:18px;padding:22px;border-top:1px solid #DCE6EC}.numbered .n{font-weight:800;color:#D1A35B;font-size:24px}.index-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.index-links a,.link-list a{display:block;min-height:44px;padding:9px 14px;border-bottom:1px solid #DCE6EC;background:#fff}.article-head{padding:8px 0 22px;border-bottom:1px solid #DCE6EC;margin-bottom:26px}.article-body{max-width:850px}.article-body section{margin-bottom:20px}.article-body section h2{font-size:23px}.article-body p{margin-bottom:13px}.article-body .media{max-width:520px}.related{border-top:1px solid #DCE6EC;padding-top:24px}.related-links{display:flex;gap:10px;flex-wrap:wrap}.related-links a{display:inline-flex;align-items:center;min-height:44px;padding:7px 14px;background:#EAF3F7;border-radius:8px}.faq-item h2{font-size:18px}.faq-item{margin-bottom:16px}.site-footer{background:#123247;color:#e6f0f5;font-size:13px;padding:48px 0 18px}.site-footer h2{font-size:15px;color:white}.site-footer a{color:#e6f0f5;display:block;min-height:32px}.foot-intro{padding-bottom:26px;border-bottom:1px solid #416073}.foot-intro p{max-width:800px}.foot-brand{display:flex;align-items:center;gap:10px;color:white;font-size:18px;margin-bottom:12px}.foot-brand span{font-size:11px;letter-spacing:.12em}.foot-logo{max-width:130px;max-height:30px;width:auto;height:auto;object-fit:contain}.foot-grid{grid-template-columns:repeat(4,minmax(0,1fr));padding:28px 0}.copyright{border-top:1px solid #416073;padding-top:14px;color:#d0e0ea;font-size:13px}.app-img{max-width:240px;max-height:340px;object-fit:contain;width:auto;height:auto}.app-icon{max-width:48px;max-height:48px;object-fit:contain;width:auto;height:auto}.no-image{min-width:0}img{max-width:100%}@media(max-width:1000px){.grid4{grid-template-columns:repeat(2,minmax(0,1fr))}.feature-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.nav-scroll{gap:19px}.hero-banner,.hero-banner img{max-height:230px}}@media(max-width:767px){body{font-size:15px;line-height:1.75}.wrap{width:calc(100% - 32px)}.top{height:60px}.top-links,.desktop-nav{display:none}.menu-toggle{display:flex;align-items:center;justify-content:center;min-height:44px;min-width:70px;border:1px solid #DCE6EC;background:white;border-radius:8px;color:#173044;font-size:14px}.menu-toggle span{margin-left:7px}.mobile-menu:not([hidden]){display:block;border-top:1px solid #DCE6EC;background:#fff}.mobile-menu[hidden]{display:none!important}.menu-inner{padding:12px 16px;max-height:calc(100dvh - 130px);overflow-y:auto}.menu-inner section{margin:6px 0 16px}.menu-inner h2{font-size:15px;margin-bottom:7px}.menu-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}.menu-grid a{min-height:44px;background:#F5F8FA;border-radius:6px;padding:8px 10px;display:flex;align-items:center;font-size:14px;color:#294356;overflow-wrap:anywhere}.bottom-nav{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));position:fixed;bottom:0;left:0;right:0;z-index:10;padding-bottom:env(safe-area-inset-bottom);height:calc(56px + env(safe-area-inset-bottom));background:#fff;border-top:1px solid #DCE6EC}.bottom-nav a{display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:0;font-size:12px;color:#607789;line-height:1.2}.bottom-nav a[aria-current]{color:#176A91;font-weight:800}.nav-mark{font-size:21px;line-height:20px}.site-footer{padding-bottom:calc(74px + env(safe-area-inset-bottom))}main{padding-bottom:42px;padding-top:25px}h1{font-size:25px}h2,.article-body section h2{font-size:21px}h3{font-size:17px}.section{margin-top:38px}.grid4,.grid3,.grid2,.feature-grid,.two-articles,.wide-panel{grid-template-columns:minmax(0,1fr)}.card,.panel,.article-body section,.topic-entry,.faq-item{padding:17px}.feature-side{gap:14px}.wide-panel{padding:18px;gap:15px}.wide-panel .media,.media{max-height:190px}.hero-banner,.hero-banner img{max-height:190px}.app-img{max-height:300px}.foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.index-links{grid-template-columns:minmax(0,1fr)}.section-head{align-items:start}.intro{font-size:15px}}@media(max-width:360px){.brand{font-size:18px}.logo{max-width:95px}.menu-grid a{font-size:13px;padding:7px}.card{padding:16px}.related-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}}