*{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","Noto Sans CJK SC",sans-serif;overflow-x:hidden}a{color:#176a91;text-decoration:none}a:hover{text-decoration:underline}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}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:#173044;line-height:1.35}h1{font-size:30px}h2{font-size:23px}h3{font-size:18px}p{margin-bottom:1.15em}img{max-width:100%;height:auto;object-fit:contain;object-position:center center;vertical-align:middle}section{min-width:0}.mast{background:#fff;border-bottom:1px solid #dce6ec}.mast-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px}.brand{display:flex;align-items:center;gap:10px;color:#173044;flex:none}.brand img{max-width:140px;max-height:34px;width:auto;height:auto}.brand strong{font-size:21px;line-height:1.2;display:block;white-space:nowrap}.brand small{display:block;color:#607789;font-size:11px;letter-spacing:.18em}.top-links{display:flex;align-items:center;gap:28px;font-size:14px}.outline,.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid #176a91;border-radius:8px;min-height:44px;padding:7px 18px;font-size:14px}.btn{background:#176a91;color:#fff}.btn:hover{background:#124f70;text-decoration:none}.outline:hover{text-decoration:none;background:#eaf3f7}.desktop-nav{height:46px;display:flex;gap:22px;align-items:center;white-space:nowrap;overflow-x:auto;scrollbar-width:thin;font-size:14px}.mast:has(.desktop-nav){background:linear-gradient(#fff 0 68px,#eaf3f7 68px)}.desktop-nav a{color:#294356;min-height:44px;display:inline-flex;align-items:center;border-bottom:2px solid transparent}.desktop-nav a.selected,.desktop-nav a[aria-current]{border-color:#176a91;color:#176a91;font-weight:700}.menu-toggle,.mobile-menu,.bottom-nav{display:none}main{padding-bottom:52px}.hero{padding:54px 0 4px}.eyebrow{font-size:13px;font-weight:700;letter-spacing:.13em;color:#176a91}.hero p{max-width:760px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0 30px}.banner{background:#f7f1e6;border:1px solid #dce6ec;border-radius:12px;max-width:1120px;display:flex;justify-content:center;align-items:center;min-width:0}.banner img{max-height:280px;width:auto;max-width:100%}.band{margin-top:56px}.band-head{display:flex;align-items:baseline;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-bottom:20px}.band-head p{font-size:14px;color:#607789;max-width:620px;margin:0}.grid4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.card,.paper,.article,.info{background:#fff;border:1px solid #dce6ec;border-radius:12px;padding:22px;min-width:0;box-shadow:0 3px 15px #12324708}.card p{font-size:15px;margin-bottom:12px}.card a.more,.more{font-size:14px;font-weight:700}.feature{display:grid;grid-template-columns:minmax(0,2fr) minmax(245px,1fr);gap:18px}.feature .card{display:flex;flex-direction:column;gap:12px}.feature .card p{margin-bottom:0}.feature .card a.more{margin-top:auto}.art{max-width:100%;max-height:240px;width:auto;height:auto;display:block;margin:0 auto 18px}.card .art{max-height:170px}.split{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:30px;align-items:center}.soft{background:#eaf3f7;border:1px solid #dce6ec;border-radius:12px;padding:26px}.sand{background:#f7f1e6;border-radius:12px;padding:26px}.split>*{min-width:0}.split .art{max-width:520px;max-height:240px;margin:auto}.stack{display:grid;gap:16px}.two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.three{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.line-item{border-top:1px solid #dce6ec;padding:18px 0}.line-item h3{margin-bottom:6px}.line-item p{margin-bottom:8px}.index-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 24px}.index-links a{padding:9px 0;border-bottom:1px solid #dce6ec;min-height:44px}.phone-art{max-width:240px;max-height:340px;width:auto;height:auto;margin:auto;display:block}.tiny-icon{max-width:48px;max-height:48px;width:auto;height:auto}.crumb{font-size:14px;padding-top:28px;color:#607789}.crumb a{color:#607789}.page-head{padding:24px 0 22px;border-bottom:1px solid #dce6ec}.page-head p{max-width:760px;margin:0}.page-layout{display:grid;grid-template-columns:minmax(0,760px) minmax(180px,1fr);gap:34px;align-items:start;padding-top:30px}.prose{min-width:0}.prose .article{margin-bottom:24px}.prose p{max-width:760px}.prose .article h2{margin-bottom:14px}.prose .article p:last-child{margin-bottom:0}.related{position:static;background:#eaf3f7;border-radius:12px;padding:18px;min-width:0}.related h2{font-size:18px}.related a{display:block;padding:9px 0;border-bottom:1px solid #dce6ec;font-size:14px;overflow-wrap:anywhere}.related a:last-child{border-bottom:0}.faq-item{margin-bottom:14px}.faq-item h2{font-size:18px}.muted{font-size:14px;color:#607789}.footer{background:#123247;color:#ecf4f8;font-size:13px;padding:42px 0 18px}.footer h2{font-size:15px;color:#fff}.footer a{color:#e1edf4;display:block;padding:5px 0;min-height:30px}.footer-intro{border-bottom:1px solid #ffffff33;padding-bottom:22px;display:grid;grid-template-columns:220px minmax(0,1fr);gap:24px}.footer-intro p{margin:0;max-width:760px}.footer-brand{font-size:23px;font-weight:700;color:#fff}.footer-brand span{font-size:12px;display:block;letter-spacing:.15em}.footer-cols{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:25px;padding:25px 0}.copyright{border-top:1px solid #ffffff33;padding-top:16px;margin:0;color:#c6d7e0}ul{padding-left:1.3em}li{margin:8px 0}a,button{touch-action:manipulation}@media(max-width:1050px){.desktop-nav{gap:18px}.grid4{grid-template-columns:repeat(2,minmax(0,1fr))}.page-layout{grid-template-columns:minmax(0,1fr) 210px}.top-links{gap:14px}}@media(max-width:767px){body{font-size:15px;line-height:1.75}.wrap{width:calc(100% - 32px)}h1{font-size:25px}h2{font-size:21px}h3{font-size:17px}.mast-inner{height:60px}.mast:has(.desktop-nav){background:#fff}.brand img{max-width:96px;max-height:30px}.brand strong{font-size:18px}.brand small{font-size:10px}.top-links,.desktop-nav{display:none}.menu-toggle{display:inline-flex;min-width:72px;min-height:44px;gap:7px;align-items:center;justify-content:center;border:1px solid #dce6ec;border-radius:8px;color:#173044;background:#fff;font-size:14px}.mobile-menu:not([hidden]){display:block;position:absolute;z-index:20;top:60px;left:0;right:0;background:#fff;box-shadow:0 9px 20px #12324724;max-height:calc(100dvh - 60px);overflow-y:auto;overscroll-behavior:contain;padding:12px 16px 20px}.mast{position:relative}.menu-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.menu-grid>div{min-width:0}.menu-grid h2{font-size:14px;background:#eaf3f7;padding:8px;border-radius:6px;margin:0 0 5px}.menu-grid a{display:flex;align-items:center;min-height:44px;padding:6px 8px;border-bottom:1px solid #dce6ec;font-size:14px;overflow-wrap:anywhere}.bottom-nav{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));position:fixed;z-index:12;bottom:0;left:0;right:0;height:calc(56px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid #dce6ec;box-shadow:0 -2px 12px #12324715}.bottom-nav a{display:flex;align-items:center;justify-content:center;color:#176a91;font-size:13px;min-width:0;min-height:44px}.footer{padding-bottom:calc(80px + env(safe-area-inset-bottom))}main{padding-bottom:40px}.hero{padding-top:34px}.banner img{max-height:190px}.band{margin-top:38px}.grid4,.feature,.split,.two,.three,.page-layout{grid-template-columns:minmax(0,1fr)}.card,.paper,.article,.info{padding:17px}.soft,.sand{padding:18px}.art,.split .art{max-height:190px}.card .art{max-height:170px}.phone-art{max-height:300px}.page-layout{gap:22px}.related{order:2}.footer-intro{grid-template-columns:minmax(0,1fr);gap:10px}.footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.index-links{gap:5px 15px}}@media(min-width:768px) and (max-width:1100px){.banner img{max-height:230px}}@media(max-width:350px){.brand img{max-width:75px}.brand{gap:5px}.brand strong{font-size:16px}.grid4{grid-template-columns:1fr}.index-links{grid-template-columns:1fr}}

.final-note{margin-top:18px}
