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:focus-visible{outline:3px solid rgba(20,120,242,.45);outline-offset:3px}
@media (max-width:1080px){.desktop-nav{gap:0}.desktop-nav a{padding:11px 8px;font-size:14px}.brand-tag{display:none}.grid-4,.help-categories{grid-template-columns:repeat(2,minmax(0,1fr))}.editorial-grid{grid-template-columns:1fr 1.2fr}.editorial-right{grid-column:1/-1;display:grid;grid-template-columns:repeat(4,1fr)}.snapshot-grid{grid-template-columns:repeat(2,1fr)}.city-map{grid-template-columns:1fr 1fr}.city-map article:nth-child(1){grid-row:auto;min-height:180px}.city-map article:nth-child(4){grid-column:auto}.footer-grid{grid-template-columns:1fr}.footer-links{grid-template-columns:repeat(4,1fr)}}
@media (max-width:760px){body{padding-bottom:72px}.container{width:min(100% - 30px,1280px)}.desktop-only{display:none!important}.mobile-only{display:flex}.site-header{height:62px}.topbar{height:62px;grid-template-columns:52px minmax(0,1fr) 52px;gap:0}.brand{justify-content:center;min-width:0}.brand-logo{max-width:132px;max-height:38px}.brand-text{font-size:21px;white-space:nowrap}.mobile-menu-slot,.mobile-discover-slot{display:flex;align-items:center}.mobile-discover-slot{justify-content:flex-end}.icon-button,.icon-link{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:12px}.icon-link{font-size:14px;font-weight:800;color:#1478F2}.hamburger,.hamburger:before,.hamburger:after{display:block;width:20px;height:2px;background:#172033;position:relative}.hamburger:before,.hamburger:after{content:"";position:absolute;left:0}.hamburger:before{top:-6px}.hamburger:after{top:6px}.mobile-bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:220;height:calc(62px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:rgba(255,255,255,.98);border-top:1px solid rgba(30,50,70,.08);justify-content:space-around}.mobile-bottom-nav a{flex:1;min-height:58px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:2px;color:#7b8695;font-size:11px}.mobile-bottom-nav a span{font-size:18px;line-height:1}.mobile-bottom-nav a.active{color:#1478F2;font-weight:800}.overlay{inset:62px 0 0}.channel-menu,.search-panel{top:62px}.channel-menu{left:auto;width:min(88vw,390px);height:calc(100vh - 62px);transform:translateX(100%);overflow:auto}.channel-menu.open{transform:none}.channel-menu-inner{width:100%;padding-left:18px;padding-right:18px}.channel-columns{grid-template-columns:1fr}.channel-columns h3{margin-top:22px}.search-panel{height:calc(100vh - 62px);overflow:auto}.search-links{grid-template-columns:1fr}.section{padding:56px 0}.section-tight{padding:34px 0}.section-head{align-items:start;flex-direction:column}.section-head h2{font-size:30px}.page-intro{grid-template-columns:1fr;padding:34px 0 26px;gap:20px}.page-intro h1{font-size:42px}.article-grid{grid-template-columns:1fr;gap:28px}.aside-nav{position:static}.grid-2,.grid-3,.grid-4,.safety-grid,.contact-cards{grid-template-columns:1fr}.topic-row{grid-template-columns:1fr;gap:8px}.magazine-grid{grid-template-columns:1fr}.magazine-grid article:nth-child(1),.magazine-grid article:nth-child(4){grid-row:auto;grid-column:auto}.story-list article{grid-template-columns:1fr}.story-mark{min-height:80px}.masonry{columns:1}.notice-list article{grid-template-columns:1fr;gap:8px}.app-showcase{grid-template-columns:1fr;padding:28px}.privacy-row,.rule-section{grid-template-columns:1fr;gap:8px}.help-categories{grid-template-columns:1fr 1fr}.feedback-path{grid-template-columns:1fr 1fr}.footer-links{grid-template-columns:1fr 1fr}.footer-note{flex-direction:column}.footer-grid{gap:34px}.editorial-grid{grid-template-columns:1fr}.editorial-left{order:1}.editorial-center{order:2;min-height:300px}.editorial-right{order:3;grid-column:auto;grid-template-columns:1fr 1fr}.snapshot-grid,.discussion-layout,.qa-home,.security-home,.home-app{grid-template-columns:1fr}.discussion-grid{grid-template-columns:1fr}.city-map{grid-template-columns:1fr}.life-cards{grid-template-columns:1fr}.life-cards article:nth-child(2),.life-cards article:nth-child(5){transform:none}.story-home{grid-template-columns:1fr}.story-home article:first-child{grid-row:auto}.guide-home,.principle-home{grid-template-columns:1fr}.home-app{padding:26px}.security-home article:nth-child(2){margin-top:0}.about-home,.brand-manifesto{padding:28px}.channel-strip .container{padding-left:0;padding-right:0}.footer-brand-link{align-items:flex-start}.footer-logo{max-width:110px}}
@media (max-width:480px){.editorial-right,.footer-links,.feedback-path,.help-categories{grid-template-columns:1fr}.page-intro h1{font-size:36px}.app-art{min-height:260px}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}.primary-link:hover{transform:none}}

/* Content-specific refinements */
.app-visual{min-height:360px;border-radius:24px;background:linear-gradient(160deg,#1478F2,#075DC9);display:flex;align-items:center;justify-content:center;padding:24px;overflow:hidden}.app-visual img{max-height:420px;object-fit:contain}.privacy-table article{display:grid;grid-template-columns:180px minmax(0,1fr);gap:24px;padding:22px 0;border-bottom:1px solid rgba(30,50,70,.08)}.privacy-table article h2{margin:0;color:#172033;font-size:20px}.privacy-table article p{margin:0}.rule-section{display:block;padding:0}.rule-section article{display:grid;grid-template-columns:210px minmax(0,1fr);gap:32px;padding:30px 0;border-bottom:1px solid rgba(30,50,70,.08)}.rule-section article h2{margin:0;color:#172033}.rule-section article p{margin:0}.feedback-path article{position:relative;padding-top:48px}.feedback-path article:before{content:"反馈";position:absolute;top:18px;left:22px;color:#1478F2;font-size:12px;font-weight:900}.panel-search-trigger{width:100%;min-height:48px;border:1px solid rgba(20,120,242,.12);border-radius:14px;background:#EDF5FF;color:#075DC9;font-weight:800;padding:0 16px;margin:0 0 8px;cursor:pointer}
@media (max-width:760px){.app-visual{min-height:260px}.privacy-table article,.rule-section article{grid-template-columns:1fr;gap:8px}.panel-search-trigger.mobile-only{display:flex;align-items:center;justify-content:center}}