:root{--cobalt:#2856c5;--cobalt-deep:#1c4099;--cobalt-soft:#e6edff;--navy:#22334e;--ink:#202b3b;--lime:#d5eb76;--lime-soft:#f3f9de;--sky:#72a8e8;--sky-soft:#eaf4ff;--coral:#ce647a;--coral-soft:#f9e8ee;--apricot:#d9914c;--apricot-soft:#fff0df;--mint:#4c9d96;--mint-soft:#e8f6f2;--background:#f6f9fd;--surface:#fff;--surface-soft:#eff4fa;--title:#202c40;--body:#3b4960;--muted:#627087;--border:#dee6f0;--divider:#ebf0f6}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--background);color:var(--body);font:16px/1.78 system-ui,-apple-system,'Microsoft YaHei','PingFang SC',sans-serif}a{color:inherit;text-decoration:none}a:hover{color:var(--cobalt)}button,input,select{font:inherit}button{cursor:pointer}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--title);line-height:1.32}h1{font-size:clamp(30px,3.5vw,48px)}h2{font-size:clamp(23px,2.4vw,29px)}h3{font-size:19px}p{margin-bottom:18px}img{display:block;max-width:100%;object-fit:cover}.container{width:min(1300px,calc(100% - 64px));margin-inline:auto}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.skip{position:absolute;top:-100px}.skip:focus{top:8px;z-index:100;background:white}.site-header{background:rgba(255,255,255,.96);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:30;backdrop-filter:blur(16px)}.nav-inner{max-width:1350px;margin:auto;padding:0 32px;min-height:74px;display:flex;align-items:center;gap:34px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:22px;color:var(--navy);flex-shrink:0;line-height:1.25}.brand-mark{background:var(--cobalt);color:#fff;width:40px;height:40px;display:grid;place-items:center;border-radius:12px}.brand small{display:block;font-weight:500;font-size:11px;letter-spacing:2px;color:var(--muted);margin-top:5px}.main-nav{display:flex;gap:24px;white-space:nowrap}.main-nav a{font-weight:650;font-size:15px;padding:24px 0;border-bottom:3px solid transparent}.main-nav a[aria-current]{color:var(--cobalt);border-color:var(--cobalt)}.top-search{margin-left:auto;display:flex;gap:6px}.top-search input{width:185px;background:#f2f6fc;border:1px solid var(--border);border-radius:9px;padding:9px 11px;min-width:0}.top-search button{border:0;border-radius:9px;background:var(--cobalt);color:white;padding:8px 14px}.channel-strip{background:white;border-bottom:1px solid var(--divider)}.channels{display:flex;align-items:center;gap:10px;overflow-x:auto;white-space:nowrap;padding-block:12px;scrollbar-width:thin}.channels a{font-size:13px;background:#f2f6fb;padding:5px 13px;border-radius:30px}.menu-toggle,.mobile-menu,.mobile-bottom{display:none}.eyebrow,.index-label{display:inline-block;letter-spacing:2px;font-size:12px;font-weight:850;color:var(--cobalt);margin-bottom:16px}.hero{margin-top:38px;min-height:365px;display:grid;grid-template-columns:1.55fr 1fr;overflow:hidden;border-radius:22px;background:linear-gradient(130deg,#e8f0ff 0%,#f9fbff 65%,#f3f9de 100%)}.hero-copy{padding:58px 60px;position:relative}.hero-copy:after{content:'✳';position:absolute;right:0;bottom:4px;color:#c5d5ff;font-size:120px;opacity:.6}.hero h1{max-width:680px;position:relative;z-index:1}.hero h1 em{font-style:normal;color:var(--cobalt)}.hero-copy p{max-width:600px}.btn{display:inline-block;border:0;background:var(--cobalt);color:white;padding:12px 22px;border-radius:11px;font-weight:750;position:relative;z-index:1}.btn:hover{background:var(--cobalt-deep);color:white}.hero-side{background:#e9effa;padding:42px 38px;border-left:1px solid #d8e3f5}.hero-side h2{font-size:22px}.hero-index{display:flex;gap:15px;padding:13px 0;border-bottom:1px solid #cbd7e7;font-size:15px;font-weight:650;line-height:1.6}.hero-index span{font-size:12px;color:var(--cobalt);font-weight:800}.section{margin:75px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:15px;margin-bottom:23px}.section-head h2{margin-bottom:0}.section-head a,.text-link{color:var(--cobalt);font-size:14px;font-weight:750}.channel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.channel-box{background:white;border:1px solid var(--border);border-top:4px solid var(--accent);border-radius:12px;padding:22px;display:flex;flex-direction:column;gap:8px}.channel-box strong{color:var(--title);font-size:18px}.channel-box span{font-size:13px;line-height:1.7}.feature-layout{display:grid;grid-template-columns:1.08fr 1fr;gap:32px}.featured{background:white;border-radius:16px;overflow:hidden;padding-bottom:25px}.featured h3,.featured p{margin-inline:25px}.featured h3{margin-top:22px;font-size:26px}.image-fallback{display:grid;place-items:center;background:linear-gradient(135deg,#dfebff,#eaf4ff 58%,#f5f9dc);color:#2d4e90;min-height:175px;text-align:center;padding:20px;font-size:18px;font-weight:800}.feature-img{width:100%;aspect-ratio:16/8;object-fit:cover}.feature-list{display:grid;gap:12px}.topic-item{background:white;padding:20px 23px;border-bottom:1px solid var(--divider);border-radius:9px}.topic-item h3{margin:7px 0 8px;font-size:18px}.topic-item p{font-size:14px;line-height:1.65;margin:0 0 12px}.item-meta{font-size:12px;color:var(--muted)}.item-meta a{color:var(--cobalt)}.tags{display:flex;gap:6px;flex-wrap:wrap}.tags span,.tags a{font-size:12px;color:#4e617f;background:#eef3fa;padding:3px 9px;border-radius:50px}.mini-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.mini{min-height:225px;padding:22px;background:var(--cobalt-soft);border-radius:14px}.mini:nth-child(2){background:var(--lime-soft)}.mini:nth-child(3){background:var(--coral-soft)}.mini:nth-child(4){background:var(--sky-soft)}.mini small{color:var(--cobalt);font-weight:800}.mini h3{margin-top:16px}.mini p{font-size:13px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.split,.two-panels{display:grid;grid-template-columns:1fr 1fr;gap:27px}.split>div,.two-panels>div{background:white;padding:28px;border-radius:17px}.wide-image{width:100%;aspect-ratio:16/8;max-height:300px;border-radius:12px;margin:18px 0}.stage-panel{background:#fff4e9!important}.line-link{padding-bottom:11px;border-bottom:1px solid var(--border);margin:10px 0;font-size:14px;font-weight:650}.timeline{border-top:2px solid var(--cobalt)}.timeline-row{display:grid;grid-template-columns:55px 1fr 24px;gap:20px;align-items:center;padding:19px 16px;border-bottom:1px solid var(--border);background:white}.timeline-row:nth-child(even){background:#edf3fc}.timeline-row>b{font-size:22px;color:var(--cobalt)}.timeline-row strong,.timeline-row small{display:block}.timeline-row small{color:var(--muted);font-size:13px;margin-top:5px}.people-panel{background:#edf4fc!important}.verify-panel{background:#eaf7f2!important}.fact-steps{display:flex;gap:6px;flex-wrap:wrap;margin:30px 0}.fact-steps span{font-size:13px;background:white;padding:9px;border-radius:7px}.city-section{display:grid;grid-template-columns:1fr 1fr;gap:45px;align-items:center;background:#eaf2fe;border-radius:18px;padding:36px 44px}.city-visual .wide-image{margin:0}.atlas-preview{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.atlas-preview a{padding:30px;border-radius:15px;background:white;border:1px solid var(--border)}.atlas-preview a:nth-child(2){background:var(--lime-soft)}.atlas-preview small,.atlas-preview span{color:var(--cobalt);font-weight:750}.ending{background:var(--cobalt-deep);color:white;text-align:center;border-radius:20px;padding:50px 25px}.ending h2,.ending .eyebrow{color:white}.ending-links{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}.ending-links a{background:#ffffff20;border:1px solid #ffffff55;color:white;border-radius:30px;padding:10px 16px}.footer{background:#eaf0f9;margin-top:80px;padding:54px 0 20px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:60px}.footer h2{font-size:23px}.footer h3{font-size:17px}.footer a{display:block;margin:9px 0}.footer p{max-width:530px;font-size:14px}.copyright{border-top:1px solid #cddae9;margin-top:35px;padding-top:14px;font-size:12px}.page-intro{margin:40px 0;background:#e6edff;border-radius:18px;padding:50px 56px}.page-intro h1{margin:0 0 15px}.page-intro p{max-width:830px;margin:0}.pulse-intro{background:#eaf4ff}.plaza-intro{background:#f1f7e7}.atlas-intro{background:#e8f2f4}.search-intro{background:#f2eefa}.about-intro{background:#fff0df}.pulse-layout,.plaza-layout,.topic-layout,.about-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:30px;align-items:start}.pulse-feed{border-left:3px solid #acc5f4;padding-left:25px}.pulse-feed article{background:white;padding:25px;border-radius:12px;margin-bottom:17px;position:relative}.pulse-feed article:before{content:'';width:11px;height:11px;background:var(--cobalt);border-radius:50%;position:absolute;left:-32px;top:34px}.pulse-feed article a{color:var(--cobalt);font-weight:700}.pulse-counter{font-size:12px;letter-spacing:1px;color:var(--muted)}.sidebar,.topic-aside,.filters,.about-nav{background:white;padding:25px;border-radius:14px;position:sticky;top:112px}.sidebar h3{margin-bottom:9px}.sidebar a{color:var(--cobalt);font-weight:750}.category-directory{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:34px}.category-tile{background:white;border-radius:10px;padding:16px;border-left:4px solid var(--accent)}.category-tile strong,.category-tile small{display:block}.category-tile small{font-size:12px;margin-top:6px;line-height:1.5}.plaza-layout{grid-template-columns:260px minmax(0,1fr)}.filters h2{font-size:21px}.filters label{display:block;margin:16px 0 5px;font-size:13px;font-weight:750}.filters select{width:100%;border:1px solid var(--border);border-radius:8px;padding:9px;background:white}.filters .btn{margin-top:20px;width:100%}.reset{display:block;text-align:center;font-size:13px;margin-top:14px}.results-top{display:flex;justify-content:space-between;align-items:center;gap:8px}.results-top span{font-size:13px;color:var(--muted)}.results>.topic-item{margin:10px 0}.pagination{display:flex;gap:7px;flex-wrap:wrap;margin:28px 0}.pagination a{display:grid;place-items:center;min-width:42px;height:42px;background:white;border:1px solid var(--border);border-radius:8px}.pagination a[aria-current]{background:var(--cobalt);color:white}.breadcrumb{font-size:13px;margin:25px 0;color:var(--muted)}.breadcrumb a{color:var(--cobalt)}.topic-layout{grid-template-columns:minmax(0,820px) minmax(220px,280px);justify-content:center}.topic-content{background:white;border-radius:15px;padding:43px;min-width:0}.topic-head h1{font-size:clamp(30px,3.2vw,43px)}.topic-head>p{font-size:18px;color:var(--muted)}.topic-head{padding-bottom:28px;border-bottom:1px solid var(--border)}.reading{margin:35px 0}.reading p{font-size:17px;line-height:1.88;margin-bottom:23px}.discussion{background:var(--lime-soft);padding:23px 28px;border-radius:12px}.discussion li{margin-bottom:12px}.source-note{margin-top:28px;border-top:1px solid var(--border);padding-top:23px;font-size:14px}.topic-aside a{display:block;padding:14px 0;border-bottom:1px solid var(--border);font-weight:650;font-size:14px}.topic-aside .back-link{color:var(--cobalt)}.atlas-map{display:grid;grid-template-columns:repeat(2,1fr);gap:19px}.atlas-card{background:white;min-height:215px;padding:30px;border-radius:14px;border-left:5px solid var(--cobalt)}.atlas-card:nth-child(4n+2){border-color:var(--coral);background:var(--coral-soft)}.atlas-card:nth-child(4n+3){border-color:var(--mint);background:var(--mint-soft)}.atlas-card:nth-child(4n+4){border-color:var(--apricot);background:var(--apricot-soft)}.atlas-card>span{color:var(--cobalt);font-size:12px;font-weight:850}.atlas-card h2{margin:14px 0}.atlas-card small{color:var(--cobalt);font-weight:750}.atlas-detail{max-width:960px;margin:30px auto;background:white;padding:40px;border-radius:16px}.atlas-detail>p{font-size:17px;line-height:2}.atlas-related{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.search-big{display:flex;max-width:750px;gap:10px;margin-top:25px}.search-big input{flex:1;min-width:0;padding:14px 17px;border-radius:10px;border:1px solid var(--border)}.search-summary{font-weight:750;margin:22px 0}.search-results{max-width:950px}.search-results .topic-item{margin-bottom:11px}.related-atlases,.search-chips{display:flex;gap:12px;flex-wrap:wrap}.related-atlases a,.search-chips a{padding:10px 17px;border-radius:20px;background:white;border:1px solid var(--border)}.about-layout{grid-template-columns:215px minmax(0,1fr)}.about-nav a{display:block;padding:8px 0}.about-articles{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.about-articles section{background:white;padding:26px;border-radius:12px;scroll-margin-top:115px}.about-articles h2{font-size:21px}.about-articles p{font-size:15px}.empty,.notfound{background:white;padding:60px 30px;border-radius:14px;text-align:center}.notfound{margin:65px auto}.notfound>span{color:var(--cobalt)}.notfound h1{margin:18px 0}.image-fallback.feature-img{min-height:260px}.menu-overlay[hidden]{display:none}@media(max-width:1100px){.nav-inner{gap:16px}.main-nav{gap:12px}.top-search input{width:135px}.channel-grid,.category-directory{grid-template-columns:repeat(2,1fr)}.mini-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:800px){.container{width:calc(100% - 36px)}.nav-inner{padding:0 18px;min-height:65px}.main-nav,.top-search{display:none}.menu-toggle{display:block;margin-left:auto;background:#eff4fb;border:0;padding:9px 12px;border-radius:9px}.menu-overlay{display:block;position:fixed;inset:0;background:#101e3b88;z-index:40}.mobile-menu{display:flex;flex-direction:column;gap:5px;position:fixed;z-index:41;background:white;right:0;top:0;bottom:0;width:min(340px,86vw);padding:25px;box-shadow:-8px 0 30px #12214920;transform:translateX(110%);transition:transform .2s}.mobile-menu.open{transform:translateX(0)}.mobile-menu a{padding:12px;border-bottom:1px solid var(--border)}.mobile-menu button{align-self:flex-end;border:0;background:#ecf2fb;border-radius:8px;padding:10px}.mobile-bottom{display:flex;position:fixed;bottom:0;left:0;right:0;background:white;border-top:1px solid var(--border);justify-content:space-around;z-index:35;padding:7px 0 max(7px,env(safe-area-inset-bottom))}.mobile-bottom a{text-align:center;font-size:22px;line-height:1.1;color:var(--navy)}.mobile-bottom small{display:block;font-size:11px;margin-top:3px}.footer{padding-bottom:94px}.hero,.feature-layout,.split,.two-panels,.city-section,.pulse-layout,.plaza-layout,.topic-layout,.about-layout{grid-template-columns:1fr}.hero-copy{padding:35px 28px}.hero-side{padding:24px 28px;border:0}.section{margin:51px 0}.featured h3{font-size:23px}.sidebar,.topic-aside,.filters,.about-nav{position:static}.footer-grid{grid-template-columns:1fr 1fr;gap:20px}.footer-grid>div:first-child{grid-column:span 2}.about-articles{grid-template-columns:1fr}.about-nav{display:flex;gap:15px;overflow:auto;white-space:nowrap}.atlas-map{grid-template-columns:1fr 1fr}.page-intro{padding:35px 28px}.topic-content{padding:25px}.city-section{padding:24px}.city-visual{order:-1}}@media(max-width:540px){.container{width:calc(100% - 32px)}.hero{margin-top:20px}.hero h1{font-size:31px}.section-head{align-items:start}.section-head>a{font-size:12px}.channel-grid,.category-directory,.mini-grid,.atlas-preview,.atlas-map,.atlas-related{grid-template-columns:1fr}.channel-box{padding:15px}.category-directory{gap:7px}.category-tile{padding:12px}.mini{min-height:auto}.page-intro{margin:20px 0;padding:28px 20px}.topic-head>p{font-size:16px}.reading p{font-size:16px}.top-search{display:none}.search-big{flex-direction:column}.fact-steps{flex-direction:column}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.topic-item{padding:16px}.timeline-row{grid-template-columns:35px 1fr 15px;gap:8px;padding:13px}.timeline-row>b{font-size:16px}.topic-content{padding:20px}.hero-copy:after{font-size:65px}.ending{padding:35px 16px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}