:root{--background:#F6F7FB;--paper:#fff;--surface:#fff;--surface-soft:#F0F2F8;--electric-purple:#5637A7;--purple-deep:#3D287C;--purple-soft:#EEEAF9;--lime:#D7EC74;--lime-soft:#F3F8DB;--lime-text:#28351B;--slate:#1E293B;--slate-deep:#162131;--slate-soft:#3A485E;--sky:#4385BA;--sky-soft:#E8F2FA;--mint:#438E7D;--mint-soft:#E5F3ED;--coral:#BE6654;--coral-soft:#FAECE7;--lavender:#9186B7;--lavender-soft:#F0EDF7;--title:#202B3D;--body:#3D4A5E;--muted:#627085;--border:#DFE4ED;--divider:#EBEFF5}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--background);font-family:system-ui,-apple-system,"PingFang SC","Microsoft Yahei",sans-serif;color:var(--body);line-height:1.72;font-size:16px}a{color:inherit;text-decoration:none}a:hover{color:var(--electric-purple)}button,input,select{font:inherit}button{cursor:pointer}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--title);line-height:1.3}h1{font-size:clamp(29px,3vw,43px)}h2{font-size:clamp(23px,2vw,28px)}h3{font-size:19px}p{line-height:1.78}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--electric-purple);outline-offset:3px}.wrap{max-width:1320px;padding-inline:32px;margin-inline:auto}.skip{position:absolute;top:-100px;left:10px;background:white;padding:10px;z-index:200}.skip:focus{top:10px}.topbar{margin-top:18px;display:flex;align-items:center;gap:30px;justify-content:space-between;height:76px;background:#fff;border:1px solid var(--border);border-radius:18px;box-shadow:0 8px 36px #1823400b;padding-inline:22px}.brand{display:flex;gap:11px;align-items:center;font-size:20px;font-weight:850;color:var(--purple-deep);line-height:1.1;white-space:nowrap}.brand small{display:block;font-size:9px;letter-spacing:1px;color:var(--muted);margin-top:7px}.brand-mark{background:var(--electric-purple);color:var(--lime);border-radius:15px;padding:8px 12px;font-size:22px}.desktop-nav{display:flex;align-items:center;gap:clamp(12px,2.3vw,32px);font-size:14px;font-weight:700}.desktop-nav a{padding:12px 0}.top-actions{display:flex;gap:10px;align-items:center}.search-control{height:44px;width:44px;border-radius:14px;display:grid;place-items:center;background:var(--purple-soft);font-size:31px;color:var(--purple-deep)}.menu-button{display:none}.frequency{display:flex;gap:8px;margin-top:18px;overflow-x:auto;scrollbar-width:thin;padding-bottom:6px}.frequency a{background:white;border:1px solid var(--border);border-radius:11px;min-width:0;flex:1 0 auto;text-align:center;padding:9px 7px;font-weight:700;white-space:nowrap;font-size:13px}.frequency a span{margin-right:5px}.frequency small{font-size:12px}.eyebrow{font-size:12px;letter-spacing:1.8px;text-transform:uppercase;font-weight:800;color:var(--electric-purple)}.eyebrow.light{color:var(--lime)}.section{padding-block:54px 12px}.section-head{margin-bottom:23px}.section-head h2{margin:7px 0}.section-head p{margin:0;color:var(--muted)}.hero{margin-top:26px;display:grid;grid-template-columns:1.6fr 1fr;min-height:393px;gap:12px}.hero-main{border-radius:24px;background:var(--slate-deep);color:white;padding:clamp(28px,4.5vw,62px);display:flex;flex-direction:column;align-items:flex-start;justify-content:center;position:relative;overflow:hidden}.hero-main:after{content:'◉';position:absolute;right:-55px;bottom:-180px;font-size:400px;color:#ffffff08;line-height:1}.hero-main h1{color:#fff;position:relative;font-size:clamp(29px,3.1vw,43px);max-width:560px;margin:19px 0}.hero-main p{color:#e1e5f2;max-width:500px}.button{display:inline-block;padding:13px 20px;background:var(--electric-purple);border-radius:12px;color:white;font-weight:750}.button:hover{color:white;background:var(--purple-deep)}.button.lime{background:var(--lime);color:var(--lime-text)}.hero-side{border-radius:22px;overflow:hidden;background:var(--purple-soft);display:flex;flex-direction:column}.hero-visual,.image-fallback{width:100%;min-height:165px;object-fit:cover}.hero-side .hero-visual,.hero-side .image-fallback{flex:1;min-height:235px}.image-fallback{display:flex;flex-direction:column;gap:8px;align-items:center;justify-content:center;min-height:180px;background:linear-gradient(140deg,#edeaf8,#e9f3f7);color:var(--purple-deep);padding:24px;text-align:center}.image-fallback span{font-size:50px;line-height:1}.image-fallback small{font-size:13px;max-width:260px}.hero-side-note{padding:20px 25px;background:var(--lime-soft)}.hero-side-note span{display:block;font-size:12px;color:var(--muted)}.hero-side-note a{display:block;font-size:17px;font-weight:800;color:var(--slate);margin-top:7px}.channel-band{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.channel-band a{border-top:4px solid var(--ch);background:white;padding:18px;border-radius:11px;display:flex;flex-direction:column;gap:9px;min-height:160px}.channel-band a>span{font-size:25px}.channel-band strong{color:var(--title)}.channel-band small{color:var(--muted);font-size:13px;line-height:1.6}.editorial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.editorial{background:white;border:1px solid var(--border);padding:23px;border-radius:16px;min-height:240px;display:flex;flex-direction:column}.editorial h3{margin:13px 0}.editorial p{font-size:14px;color:var(--muted)}.go{margin-top:auto;font-size:13px;color:var(--electric-purple);font-weight:750}.path-section{margin-top:30px}.path-grid{background:var(--purple-soft);border-radius:24px;padding:38px;display:grid;grid-template-columns:1fr 1.3fr;gap:40px;align-items:center}.path-grid h3{font-size:25px}.text-link{font-weight:750;color:var(--electric-purple)}.path-steps{list-style:none;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.path-steps li{background:#fff;border:1px solid var(--border);border-radius:13px;padding:18px;position:relative}.path-steps strong,.path-steps small{display:block}.path-steps small{font-size:12px;margin-top:8px}.feature-three{display:grid;grid-template-columns:2fr 1fr 1fr;gap:16px}.feature-three>div,.mini-story{background:white;border-radius:16px;overflow:hidden;padding-bottom:15px}.feature-three>div>a{display:block;padding:20px}.feature-three .image-fallback,.media-wide{height:245px;object-fit:cover}.mini-story h3,.mini-story>span{display:block;margin:15px 17px 5px}.mini-story .image-fallback,.mini-story img{height:175px;object-fit:cover}.mini-story span{font-size:13px;color:var(--purple-deep)}.stage-row{display:grid;grid-template-columns:1fr 1.4fr;gap:20px}.stage-image,.stage-row>.image-fallback{height:390px;border-radius:17px;object-fit:cover}.topic-row{display:flex;flex-direction:column;gap:6px;border-bottom:1px solid var(--border);padding:17px 3px}.topic-row strong{font-size:18px;color:var(--title)}.topic-row>span:last-child{font-size:14px;color:var(--muted)}.meme-layout{display:grid;grid-template-columns:1fr 1.4fr;gap:16px}.meme-tile{background:var(--lime);border-radius:20px;padding:32px}.meme-tile>span{font-size:46px}.meme-tile a{font-weight:800;color:var(--purple-deep)}.meme-tags{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.meme-tags a{background:white;padding:15px;border-radius:12px;display:flex;gap:7px;justify-content:space-between;font-weight:700;font-size:14px}.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;border-top:2px solid var(--electric-purple);padding-top:25px}.timeline a{position:relative}.timeline a:before{content:'';position:absolute;top:-33px;width:13px;height:13px;border-radius:50%;background:var(--electric-purple)}.timeline span,.discussion-strip span{display:block;font-size:12px;color:var(--electric-purple);font-weight:700}.timeline strong{display:block;margin:10px 0;font-size:18px}.timeline p{font-size:14px}.compare{display:grid;grid-template-columns:1fr 1fr;gap:15px}.compare>div{background:var(--slate-deep);padding:35px;border-radius:17px;color:white}.compare>div+div{background:var(--mint-soft);color:var(--body)}.compare h3{color:inherit;margin-top:13px}.compare span{font-size:12px;letter-spacing:1px}.compare a{color:var(--purple-deep);font-weight:750}.city-layout{display:grid;grid-template-columns:1.1fr 1fr;gap:30px;align-items:center}.city-visual,.city-layout>.image-fallback{height:265px;border-radius:18px;object-fit:cover}.special-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.special-grid a{background:#fff;border-radius:17px;overflow:hidden;padding-bottom:20px}.special-grid img,.special-grid .image-fallback{height:165px;object-fit:cover}.special-grid a>.eyebrow,.special-grid h3,.special-grid p{display:block;margin:10px 18px}.special-grid p{font-size:14px}.discussion-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.discussion-strip a{background:var(--lavender-soft);border-radius:16px;padding:22px}.discussion-strip strong,.discussion-strip small{display:block;margin-top:10px}.discussion-strip small{font-size:13px}.next-station{display:grid;grid-template-columns:1fr 1fr;gap:28px;background:var(--lime-soft);margin:50px 0;border-radius:22px;padding:32px}.quick-links{display:grid;grid-template-columns:1fr 1fr;gap:12px}.quick-links a{background:white;border-radius:11px;padding:18px;font-weight:750}.footer{background:var(--slate-deep);margin-top:70px;padding:42px 0;color:#dfe5ed}.footer-grid{display:flex;justify-content:space-between;gap:30px}.footer strong{font-size:20px;color:white}.footer-grid>div:last-child{display:flex;gap:22px;align-items:flex-start;font-size:14px}.legal{font-size:12px;color:#b3bfca}.bottom-nav{display:none}.page-intro{margin-top:28px;border-radius:22px;padding:44px;background:white}.page-intro h1{margin:10px 0}.page-intro p{max-width:800px;margin:0}.signals-intro{display:flex;justify-content:space-between;align-items:center;background:var(--slate-deep);color:white}.signals-intro h1{color:white}.signal-shape{color:var(--lime);font-size:70px;display:grid;text-align:center;line-height:1}.signal-shape small{font-size:12px;margin-top:15px;color:white}.pill-bar{display:flex;flex-wrap:wrap;gap:9px;margin:25px 0}.pill-bar a{border:1px solid var(--border);background:white;border-radius:40px;padding:8px 15px;font-size:13px}.pill-bar a.selected{background:var(--electric-purple);color:white}.signals-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:28px}.signal-item{display:grid;grid-template-columns:50px 1fr;gap:22px;padding:30px 0;border-top:1px solid var(--border)}.signal-index{font-size:25px;color:var(--lavender)}.signal-item h2{font-size:24px;margin:9px 0}.signal-item p{margin-bottom:8px}.source-note{font-size:12px;color:var(--muted);margin-bottom:13px}.sidebar-panel{background:white;padding:24px;border-radius:16px;margin-bottom:16px;border:1px solid var(--border)}.sidebar-panel ol{padding-left:20px}.sidebar-panel a{display:block;font-weight:650;color:var(--electric-purple);margin:9px 0}.channel-matrix{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:24px}.channel-cell{background:white;border:1px solid var(--border);border-top:4px solid var(--ch);border-radius:15px;padding:22px;min-height:215px}.channel-cell.active{background:var(--lime-soft)}.channel-num{font-size:12px;color:var(--muted);display:block;margin-bottom:11px}.channel-cell b{display:block;font-size:18px}.channel-cell p{font-size:13px;color:var(--muted);margin:10px 0}.channel-cell small{font-size:12px;color:var(--electric-purple)}.inline-head{display:flex;justify-content:space-between;align-items:center;margin-top:55px}.compact-topics{display:grid;grid-template-columns:repeat(2,1fr);column-gap:40px}.pager{display:flex;gap:8px;flex-wrap:wrap;margin:35px 0}.pager a{border-radius:9px;border:1px solid var(--border);background:white;min-width:44px;padding:9px;text-align:center}.pager a[aria-current]{background:var(--electric-purple);color:white}.breadcrumbs{margin-top:35px;font-size:13px;color:var(--muted)}.topic-layout{display:grid;grid-template-columns:minmax(0,820px) minmax(220px,1fr);gap:28px;margin-top:24px}.topic-article{background:white;border:1px solid var(--border);border-radius:18px;padding:clamp(22px,3vw,42px)}.topic-article h1{margin:15px 0 20px}.topic-labels{display:flex;flex-wrap:wrap;gap:8px}.topic-labels span{font-size:12px;background:var(--purple-soft);padding:5px 11px;border-radius:30px}.topic-lead{font-size:19px;color:var(--slate);border-left:4px solid var(--lime);padding:15px 20px;background:var(--lime-soft);margin:24px 0}.topic-visual,.topic-article>.image-fallback{height:310px;width:100%;object-fit:cover;border-radius:15px}.article-body{padding-top:30px}.article-body section{margin-bottom:29px}.article-body h2{font-size:22px}.article-body p{font-size:17px;line-height:1.82}.source-box{background:var(--mint-soft);padding:23px;border-radius:13px}.source-box h2,.questions h2{font-size:22px}.source-box p{font-size:14px}.questions{margin-top:40px}.questions p{border-bottom:1px solid var(--border);padding:10px 0;display:flex;gap:15px}.questions span{color:var(--electric-purple);font-weight:800}.related-link{border-bottom:1px solid var(--border);padding:5px 0}.map-intro{background:var(--purple-soft)}.map-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:17px;margin-top:25px}.map-node{background:#fff;border-radius:20px;border:1px solid var(--border);padding:27px;position:relative;min-height:240px}.map-node:nth-child(3n){background:var(--lime-soft)}.map-node:nth-child(4n){background:var(--sky-soft)}.map-node-mark{font-weight:800;font-size:28px;color:var(--electric-purple)}.map-node h2{margin-top:10px}.map-node p{max-width:500px}.map-node>span:last-child{font-size:13px;color:var(--electric-purple);font-weight:750}.feature-detail{display:grid;grid-template-columns:1.2fr 1fr;gap:25px;margin-top:30px}.feature-story,.route-contents{background:white;padding:28px;border-radius:20px}.feature-banner,.feature-story>.image-fallback{height:255px;object-fit:cover;border-radius:16px;margin:15px 0}.feature-prose p{font-size:16px}.route-label{padding:15px;background:var(--lime-soft);border-radius:10px;font-size:13px}.route-stop{display:block;border-left:3px solid var(--electric-purple);padding:10px 18px;margin:20px 0;background:var(--surface-soft);border-radius:0 10px 10px 0}.route-stop span{font-size:12px;color:var(--electric-purple)}.route-stop strong{display:block}.route-stop p{font-size:13px;margin:4px 0}.search-intro{background:var(--lime-soft)}.search-form{background:white;border-radius:17px;padding:30px;display:flex;flex-direction:column;gap:12px;margin-top:24px}.search-form label{font-weight:700}.search-form>div{display:flex;gap:9px}.search-form input{flex:1;min-width:0;padding:14px;border:1px solid var(--border);border-radius:9px}.search-form button{background:var(--electric-purple);border:0;color:white;border-radius:10px;padding:12px 23px}.search-form select{border:1px solid var(--border);padding:12px;border-radius:9px;max-width:400px;background:white}.empty-state{text-align:center;background:white;border-radius:18px;padding:70px 20px;margin:28px 0}.big-symbol{font-size:65px;color:var(--electric-purple);font-weight:850}.result-head{margin-top:32px;font-weight:750}.about-intro{background:var(--mint-soft)}.about-layout{display:grid;grid-template-columns:230px 1fr;gap:25px;margin-top:25px}.about-index{display:flex;flex-direction:column;align-self:start;gap:15px;background:white;border-radius:15px;padding:22px;position:sticky;top:15px}.about-content{background:white;border-radius:18px;padding:40px}.about-content section{border-bottom:1px solid var(--border);padding-bottom:25px;margin-bottom:27px}.about-content h3{margin-top:23px}.menu-overlay,.mobile-menu{display:none}
@media(max-width:1100px){.wrap{padding-inline:24px}.desktop-nav{gap:13px}.channel-band,.channel-matrix{grid-template-columns:repeat(2,1fr)}.hero{grid-template-columns:1.3fr 1fr}.path-steps{grid-template-columns:repeat(2,1fr)}.feature-three{grid-template-columns:1.2fr 1fr}.feature-three .mini-story:last-child{grid-column:2}.feature-three>div{grid-row:span 2}.signals-layout{grid-template-columns:minmax(0,1fr) 260px}}
@media(max-width:760px){.wrap{padding-inline:17px}.topbar{height:66px;margin-top:10px;padding-inline:15px}.desktop-nav{display:none}.menu-button{display:block;border:0;background:var(--purple-soft);border-radius:10px;height:44px;width:44px;font-size:23px}.frequency{padding-inline:17px;margin-top:12px}.frequency a{padding:7px 12px}.hero,.stage-row,.city-layout,.meme-layout,.feature-detail,.signals-layout,.topic-layout,.about-layout,.next-station,.path-grid{grid-template-columns:1fr}.hero-main{min-height:350px}.hero-side{min-height:180px}.hero-side .hero-visual,.hero-side .image-fallback{min-height:135px}.section{padding-top:42px}.editorial-grid,.special-grid,.discussion-strip,.timeline{grid-template-columns:1fr 1fr}.feature-three{grid-template-columns:1fr 1fr}.feature-three>div{grid-column:1/-1;grid-row:auto}.feature-three .mini-story:last-child{grid-column:auto}.path-grid{padding:24px}.topic-aside{display:grid;grid-template-columns:1fr 1fr;gap:10px}.about-index{position:static;display:flex;flex-direction:row;overflow-x:auto}.about-index a{white-space:nowrap}.footer-grid{flex-direction:column}.footer{padding-bottom:85px}.bottom-nav{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:6px 0 max(7px,env(safe-area-inset-bottom))}.bottom-nav a{display:grid;text-align:center;font-size:23px;line-height:1.2;min-width:60px}.bottom-nav small{font-size:11px}.menu-overlay:not([hidden]){display:block;position:fixed;inset:0;background:#111a30a0;z-index:80}.mobile-menu:not([hidden]){display:flex;position:fixed;top:0;right:0;bottom:0;width:min(310px,85vw);background:white;z-index:81;padding:24px;flex-direction:column;gap:12px;box-shadow:-8px 0 30px #0003}.mobile-menu a{padding:10px;border-bottom:1px solid var(--border);font-weight:750}.mobile-menu button{align-self:end;background:var(--purple-soft);border:0;border-radius:8px;padding:10px}.signals-intro .signal-shape{display:none}}
@media(max-width:490px){h1{font-size:29px}.hero-main h1{font-size:29px}.channel-band,.channel-matrix,.compact-topics,.editorial-grid,.special-grid,.discussion-strip,.timeline,.map-grid,.compare,.topic-aside{grid-template-columns:1fr}.feature-three{grid-template-columns:1fr}.feature-three>div{grid-column:auto}.path-steps,.meme-tags,.quick-links{grid-template-columns:1fr 1fr}.topic-article{padding:20px}.page-intro{padding:28px 22px}.channel-cell{min-height:0}.footer-grid>div:last-child{flex-wrap:wrap}.search-form>div{flex-direction:column}.about-content{padding:22px}.stage-image,.stage-row>.image-fallback{height:230px}.city-visual,.city-layout>.image-fallback{height:210px}}

.brand-logo{width:48px;height:48px;min-height:0;object-fit:contain;border-radius:11px;flex-shrink:0}.brand .image-fallback{background:var(--electric-purple);color:var(--lime);padding:0}.brand .image-fallback span{font-size:25px}.brand .image-fallback small{display:none}.channel-pic,.channel-cell .image-fallback{width:100%;height:88px;min-height:88px;object-fit:cover;border-radius:8px;margin:6px 0}.channel-cell .image-fallback span{font-size:28px}.channel-cell .image-fallback small{display:none}