*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:#333;font:16px/1.8 system-ui,"PingFang SC","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}a:hover{color:#f45132}button{font:inherit;cursor:pointer}.container{width:min(1120px,calc(100% - 48px));margin:auto}.site-header{position:sticky;top:0;z-index:100;background:#fff;box-shadow:0 1px 8px #0000000d}.header-inner{display:flex;align-items:center;gap:24px;min-height:70px}.brand{display:flex;align-items:center;gap:8px;white-space:nowrap;min-width:120px;color:#1a1a1a}.brand strong{font-size:20px}.brand .media{background:transparent!important;width:auto!important;min-width:0;min-height:0}.brand img{display:block;width:auto;height:36px;max-width:90px;object-fit:contain}.main-nav{display:flex;gap:24px;white-space:nowrap;align-items:center;flex:1;justify-content:center}.nav-link{font-size:14px;font-weight:600;padding:21px 0;border-bottom:2px solid transparent}.nav-link.active,.nav-link:hover{color:#f45132;border-bottom-color:#f45132}.register{padding:7px 24px;background:#f45132;color:#fff!important;border-radius:999px;line-height:26px;white-space:nowrap}.register:hover{background:#ff684e}.sub-nav{background:#f6f7f9;border-bottom:1px solid #ededed}.sub-scroll{display:flex;gap:28px;align-items:center;min-height:44px;overflow-x:auto;white-space:nowrap;scrollbar-width:thin}.sub-scroll a{font-size:14px;color:#666}.sub-scroll a:hover{color:#f45132}.site-main{padding-top:26px;padding-bottom:65px}h1,h2,h3{line-height:1.36;color:#1a1a1a}h1{font-size:36px;letter-spacing:-.5px;margin:0 0 18px}h2{font-size:25px;margin:0 0 18px}h3{font-size:19px;margin:0 0 10px}p{margin:0 0 17px}section{min-width:0}.eyebrow{color:#f45132;font-size:13px;letter-spacing:.1em;font-weight:700;margin-bottom:13px}.lead{color:#666;font-size:17px}.hero{display:grid;grid-template-columns:1.12fr .88fr;gap:32px;align-items:center;padding:22px 0 30px}.hero .media{max-height:290px}.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.hero-actions a,.read-more{color:#f45132;font-weight:650}.hero-actions a{border:1px solid #f4513255;border-radius:99px;padding:4px 15px}.block{margin-top:40px}.block-heading{display:flex;justify-content:space-between;gap:18px;align-items:baseline;border-bottom:1px solid #eee;padding-bottom:12px;margin-bottom:20px}.block-heading h2{margin:0}.block-heading small{color:#999}.grid{display:grid;gap:17px}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.card{background:#fff;border:1px solid #e9eaec;border-radius:13px;padding:19px;min-width:0}.card h3{margin-bottom:10px}.card p{font-size:15px;color:#666}.card:hover{border-color:#f4513255;box-shadow:0 8px 26px #00000008}.media{display:flex;align-items:center;justify-content:center;min-width:0;overflow:hidden;border-radius:12px;background:#f6f7f9}.media img{display:block;max-width:100%;max-height:100%;width:100%;height:100%;object-fit:contain;object-position:center}.media-natural img{height:auto;max-height:290px;width:auto;max-width:100%}.media-wide{aspect-ratio:16/9}.media-square{aspect-ratio:1}.media-banner{aspect-ratio:16/7}.media-portrait{aspect-ratio:3/4;max-width:300px}.media-logo{border-radius:0}.media-placeholder{min-height:110px}.card .media{margin-bottom:12px}.card .media-natural img{max-height:160px}.card .media-wide{max-height:190px}.split{display:grid;grid-template-columns:1fr 1fr;gap:25px;align-items:start}.article{max-width:820px}.article .content-section{padding:24px 0;border-bottom:1px solid #eee}.article .content-section p{line-height:1.9}.article-intro{max-width:780px;margin-bottom:20px}.bread{font-size:13px;color:#999;margin:0 0 20px}.page-title{max-width:800px;padding:8px 0 16px}.page-title h1{font-size:33px}.article-index{background:#f6f7f9;border-radius:12px;padding:20px;display:grid;gap:8px}.article-index a{font-size:15px}.topic-hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(220px,.6fr);gap:32px;align-items:center;margin-bottom:20px}.related{margin-top:42px;border-top:2px solid #f45132;padding-top:24px}.related-list{display:flex;flex-wrap:wrap;gap:12px}.related-list a{background:#f6f7f9;padding:9px 17px;border-radius:7px}.list-row{padding:17px 0;border-bottom:1px solid #eee;display:grid;grid-template-columns:35px 1fr;gap:10px}.list-row b{color:#f45132}.list-row p{color:#666;font-size:15px}.notice{padding:20px 24px;border-left:3px solid #d7a84b;background:#f6f7f9;color:#555;border-radius:5px}.site-footer{background:#1a1a1a;color:#f5f5f5;padding:44px 0 20px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:28px}.site-footer h2{font-size:17px;color:#fff;margin-bottom:16px}.site-footer p,.site-footer a{font-size:13px;color:#d9d9d9}.footer-grid section>a{display:block;margin-bottom:8px}.footer-links{display:flex;gap:20px;flex-wrap:wrap;border-top:1px solid #ffffff20;padding-top:20px;margin-top:20px}.legal{border-top:1px solid #ffffff20;padding-top:18px;margin-top:20px}.legal p{margin-bottom:5px;font-size:12px}.menu-toggle,.mobile-bottom,.mobile-drawer,.drawer-mask{display:none}.menu-toggle{border:none;background:transparent;padding:8px}.menu-toggle span{display:block;background:#333;width:21px;height:2px;margin:4px 0}.drawer-head{display:flex;justify-content:space-between;padding:17px;border-bottom:1px solid #eee;align-items:center}.drawer-close{background:none;border:0;font-size:29px}.drawer-home{display:block;padding:12px 18px;color:#f45132}.drawer-group{padding:10px 18px;border-top:1px solid #eee}.drawer-group h3{font-size:15px;color:#f45132}.drawer-group a{display:block;font-size:14px;padding:4px 0}.mobile-bottom a{font-size:13px}@media(max-width:980px){.main-nav{display:none}.header-inner{justify-content:space-between;min-height:58px;gap:8px}.menu-toggle{display:block}.brand{min-width:0}.brand strong{font-size:19px}.brand img{max-height:30px}.register{padding:5px 17px}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);height:100dvh;background:#fff;z-index:12000;transform:translateX(-105%);transition:transform .2s ease;overflow-y:auto}.mobile-drawer.is-open{transform:translateX(0)}.drawer-mask{display:none;position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:11000;opacity:0;pointer-events:none}.drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}.drawer-open{overflow:hidden}.mobile-bottom{position:fixed;display:flex;bottom:0;left:0;right:0;height:60px;z-index:90;background:#fff;box-shadow:0 -1px 10px #00000013;justify-content:space-around;align-items:center}.site-main{padding-bottom:85px}.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:767px){.container{width:calc(100% - 32px)}.hero,.topic-hero,.split{grid-template-columns:1fr;gap:16px}.hero .media{order:-1;max-height:200px}.topic-hero .media{order:-1;max-height:210px}h1{font-size:28px}.page-title h1{font-size:27px}h2{font-size:21px}h3{font-size:17px}.lead{font-size:15px}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}.block{margin-top:29px}.card{padding:14px}.card p{font-size:14px}.media-banner{aspect-ratio:16/7}.sub-scroll{gap:18px}.sub-scroll a{font-size:13px}.footer-grid{gap:18px}.site-footer{padding-bottom:85px}}@media(max-width:355px){.grid-3{grid-template-columns:1fr}.brand strong{font-size:17px}.register{padding:4px 13px}.card{padding:13px}}