*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#F5F3EE;color:#3E4752;font:16px/1.78 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans SC","Microsoft YaHei",sans-serif;overflow-wrap:anywhere}body.lock{overflow:hidden}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:4px}img{display:block;max-width:100%;height:auto;object-fit:contain;object-position:center}.wrap{width:min(1180px,calc(100% - 64px));margin:0 auto;min-width:0}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:12px;top:12px;z-index:1000;background:#fff;padding:10px 14px;border:1px solid #DDD9D1}.site-header{background:#F5F3EE;border-bottom:1px solid #DDD9D1}.brand-row{min-height:68px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:28px}.brand{display:flex;align-items:center;min-width:0}.brand-logo{height:28px;width:auto;max-width:180px}.brand-text{display:flex;flex-direction:column;line-height:1.1;color:#20262F}.brand-text strong{font-size:20px}.brand-text small{font-size:10px;letter-spacing:.16em;margin-top:5px}.brand-line{margin:0;color:#707986;font-size:14px;text-align:center}.header-actions{display:flex;align-items:center;gap:8px}.minor-link{font-size:14px;padding:10px 4px}.icon-btn{min-width:44px;height:44px;border:1px solid #DDD9D1;background:#fff;color:#253544;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;font:inherit;cursor:pointer}.js .nojs-menu{display:none}.js-menu{display:none}.js .js-menu{display:inline-flex}.track-nav{border-top:1px solid #E7DFD2;background:#fff}.track-inner{height:46px;display:flex;align-items:center;justify-content:space-between;gap:28px}.track-code{font-size:13px;letter-spacing:.12em;color:#A85E4D;white-space:nowrap}.track-links{display:flex;align-items:center;gap:26px;min-width:0}.track-links a{height:46px;display:flex;align-items:center;position:relative;font-size:15px}.track-links a.active:after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:#A85E4D}.track-links a.active{color:#20262F;font-weight:650}main{display:block}.section{padding:56px 0;border-bottom:1px solid #DDD9D1}.section:last-child{border-bottom:0}.section-kicker{font-size:13px;letter-spacing:.14em;color:#A85E4D;margin:0 0 8px}.hero{display:grid;grid-template-columns:minmax(0,58fr) minmax(0,42fr);gap:42px;align-items:center}.hero h1,.page-hero h1{font-size:clamp(32px,3vw,36px);line-height:1.22;margin:0 0 18px;color:#20262F}.hero p,.page-hero p{max-width:760px}.hero-actions,.inline-links{display:flex;gap:16px;flex-wrap:wrap;margin-top:22px}.btn-link{display:inline-flex;min-height:44px;align-items:center;padding:8px 14px;border:1px solid #A85E4D;border-radius:8px;color:#253544;background:#fff}.text-link{color:#7C4036;text-decoration:underline;text-underline-offset:4px}.media-frame{display:flex;align-items:center;justify-content:center;background:#EEF1F4;border:1px solid #DDD9D1;border-radius:10px;padding:14px;min-width:0}.media-frame img{width:auto;max-width:100%;height:auto}.index-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0}.index-3 article{padding:0 24px;border-right:1px solid #DDD9D1}.index-3 article:first-child{padding-left:0}.index-3 article:last-child{border-right:0;padding-right:0}.index-3 h2,.split h2,.article h2,.theme-index h2{font-size:24px;line-height:1.35;color:#20262F;margin:0 0 12px}.index-3 h3,.cards h3{font-size:19px;color:#20262F;margin:8px 0}.num{font-size:13px;color:#A85E4D;letter-spacing:.12em}.split{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(240px,.8fr);gap:36px;align-items:start}.split.reverse{grid-template-columns:minmax(240px,.7fr) minmax(0,1.3fr)}.stack-media{display:grid;gap:16px}.stack-media .media-frame{min-height:120px}.band{display:grid;grid-template-columns:minmax(220px,34fr) minmax(0,66fr);gap:34px;align-items:center}.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin:22px 0}.steps article{border-top:2px solid #A85E4D;padding-top:14px}.theme-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.theme-list article{padding:18px;border-top:1px solid #DDD9D1}.city-grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1fr) minmax(0,1fr);gap:20px;align-items:start}.check-list{padding-left:1.2em}.check-list li{margin:.35em 0}.mobile-feature{display:grid;grid-template-columns:minmax(140px,.65fr) minmax(0,1.7fr) minmax(140px,.65fr);gap:30px;align-items:center}.app-media img{max-width:210px;max-height:320px}.mark-media img{max-width:60px}.closing-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.closing-grid a{padding:20px;background:#fff;border:1px solid #DDD9D1;border-radius:10px}.page-hero{padding:52px 0 30px}.page-summary{font-size:17px;max-width:780px}.layout-image-wide .media-frame{margin-top:24px;max-width:960px}.page-grid-narrow{display:grid;grid-template-columns:minmax(220px,32fr) minmax(0,68fr);gap:36px;align-items:start}.page-grid-toc{display:grid;grid-template-columns:240px minmax(0,1fr);gap:42px;align-items:start}.side-toc{border-top:2px solid #A85E4D;padding-top:14px}.side-toc a{display:block;padding:7px 0;border-bottom:1px solid #DDD9D1}.article{max-width:820px;min-width:0}.article.wide{max-width:100%}.article h2{margin-top:34px}.article h3{font-size:19px;color:#20262F}.article p{margin:0 0 16px}.article ul,.article ol{padding-left:1.3em}.note{background:#EEF1F4;border-left:3px solid #A85E4D;padding:16px 18px;margin:22px 0}.theme-index{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:30px}.theme-index a{display:block;padding:15px;border-top:2px solid #A85E4D;background:#fff}.faq{max-width:850px}.faq details{border-top:1px solid #DDD9D1;padding:14px 0}.faq summary{cursor:pointer;color:#20262F;font-weight:650}.faq p{margin:10px 0 0}.service-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.service-grid article{background:#fff;border:1px solid #DDD9D1;border-radius:10px;padding:20px}.mobile-shortcuts{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:28px;margin-bottom:28px;background:#DDD9D1;border:1px solid #DDD9D1}.mobile-shortcuts a{background:#fff;padding:12px;text-align:center;min-height:44px}.site-footer{background:#202934;color:#D7DCE1;padding:42px 0 24px}.footer-top{display:flex;justify-content:space-between;gap:30px;align-items:center;border-bottom:1px solid rgba(255,255,255,.15);padding-bottom:24px}.footer-brand{display:flex;align-items:center;gap:12px}.footer-logo{height:26px;max-width:160px;width:auto}.footer-top p{max-width:520px;color:#B9C0C8}.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:30px;padding:30px 0}.footer-grid h2{font-size:14px;color:#fff;margin:0 0 10px}.footer-grid a{display:block;padding:6px 0;font-size:14px;color:#D7DCE1}.footer-bottom{border-top:1px solid rgba(255,255,255,.15);padding-top:20px;font-size:13px;color:#B9C0C8}.overlay{position:fixed;inset:0;background:rgba(20,27,34,.42);z-index:90}.drawer{position:fixed;right:0;top:0;bottom:0;width:min(460px,100%);background:#F5F3EE;z-index:100;transform:translateX(102%);transition:transform .2s ease;pointer-events:none;visibility:hidden;overflow:auto}.drawer.open{transform:translateX(0);pointer-events:auto;visibility:visible}.drawer-head{position:sticky;top:0;background:#F5F3EE;display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid #DDD9D1}.drawer-body{padding:8px 22px 30px}.drawer-body section{padding:18px 0;border-bottom:1px solid #DDD9D1}.drawer-body h2{font-size:13px;color:#707986;font-weight:500;margin:0 0 8px}.drawer-body a{display:block;padding:7px 0;font-size:16px}.search-panel{position:fixed;inset:0;background:rgba(20,27,34,.42);z-index:110;padding:86px 20px 20px}.search-box{width:min(680px,100%);margin:0 auto;background:#F5F3EE;border:1px solid #DDD9D1;border-radius:12px;padding:22px}.search-head{display:flex;justify-content:space-between;align-items:center}.search-head h2{margin:0;font-size:22px;color:#20262F}.search-box label{display:block;margin:16px 0 7px}.search-box input{width:100%;min-height:46px;border:1px solid #BFC4C9;background:#fff;border-radius:8px;padding:10px 12px;font:inherit}.search-results{display:grid;margin:12px 0}.search-results a{padding:9px 4px;border-bottom:1px solid #DDD9D1}.icon-btn:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #A85E4D;outline-offset:2px}
@media(max-width:1100px){.wrap{width:min(1180px,calc(100% - 56px))}.track-links{gap:18px}.track-links a:nth-last-child(-n+2){display:none}.brand-line{font-size:13px}.theme-index{grid-template-columns:repeat(2,1fr)}}
@media(max-width:820px){.wrap{width:calc(100% - 44px)}.brand-row{min-height:62px;grid-template-columns:auto 1fr auto;gap:14px}.brand-line{display:none}.desktop-only{display:none}.track-links a:nth-child(n+5){display:none}.hero,.split,.split.reverse,.band,.page-grid-narrow,.page-grid-toc,.mobile-feature{grid-template-columns:1fr}.hero{gap:26px}.index-3{grid-template-columns:1fr}.index-3 article{padding:18px 0;border-right:0;border-bottom:1px solid #DDD9D1}.index-3 article:last-child{border-bottom:0}.steps{grid-template-columns:1fr}.city-grid{grid-template-columns:1fr}.theme-list,.service-grid{grid-template-columns:1fr}.side-toc{max-width:540px}.footer-grid{grid-template-columns:repeat(2,1fr)}.footer-top{align-items:flex-start;flex-direction:column}.app-media{justify-content:flex-start}}
@media(max-width:560px){body{font-size:15.75px}.wrap{width:calc(100% - 32px)}.brand-row{min-height:60px}.track-nav{display:none}.section{padding:34px 0}.hero h1,.page-hero h1{font-size:28px}.page-hero{padding:34px 0 18px}.index-3 h2,.split h2,.article h2,.theme-index h2{font-size:22px}.hero .media-frame img{max-height:210px}.theme-list{grid-template-columns:1fr}.theme-index{grid-template-columns:1fr}.closing-grid{grid-template-columns:1fr}.mobile-shortcuts{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr}.search-panel{padding:12px}.search-box{margin-top:0}.drawer{width:100%}.desktop-only{display:none}.app-media img{max-width:180px;max-height:300px}.page-summary{font-size:16px}}
@media(max-width:340px){.wrap{width:calc(100% - 28px)}.header-actions{gap:4px}.icon-btn{min-width:44px}.brand-text strong{font-size:18px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}