:root{--background:#F1F3F1;--paper:#FBFCFA;--surface:#fff;--surface-soft:#E9EEEB;--pine:#234B43;--pine-deep:#17372F;--pine-light:#38685C;--electric:#36AFA5;--electric-deep:#237E78;--electric-soft:#DFF3F0;--amber:#C88A45;--amber-soft:#F7EDDF;--silver:#AAB5B3;--ice:#DDEBF0;--graphite:#252E30;--title:#273432;--body:#485651;--muted:#62716B;--border:#DCE4DF;--player-bg:#080D0E}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--background);color:var(--body);font:16px/1.7 system-ui,-apple-system,'Microsoft Yahei',sans-serif;overflow-x:hidden}img{display:block;max-width:100%}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{cursor:pointer}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.2;color:var(--title)}h1{font-size:clamp(30px,4vw,56px);letter-spacing:-.045em}h2{font-size:clamp(24px,2.6vw,34px);letter-spacing:-.035em}h3{font-size:19px}.wrap{width:min(1360px,calc(100% - 68px));margin-inline:auto}.eyebrow{font-size:12px;letter-spacing:.16em;font-weight:800;color:var(--electric-deep);text-transform:uppercase}.section{padding-block:70px}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:29px}.section-heading h2{margin:8px 0 0}.section-heading p{margin:0;font-size:14px;color:var(--muted)}.text-link{font-weight:700;color:var(--pine);font-size:14px}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:28px;background:var(--pine);color:#fff;font-weight:700;font-size:14px;padding:13px 21px;border:0;border-radius:10px;min-height:46px}.button:hover,.button:focus-visible{background:var(--pine-light)}.button--light{background:#F6F8F4;color:var(--pine-deep)}.button--light:hover{background:#DDEFE9}.skip{position:absolute;left:-10000px;top:auto}.skip:focus{left:10px;top:10px;z-index:300;background:#fff;padding:12px}.site-header{height:76px;background:var(--paper);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:30}.bar{height:100%;display:flex;align-items:center;gap:30px}.brand{display:flex;align-items:center;gap:8px;color:var(--pine-deep);font-size:25px;font-weight:900;white-space:nowrap;letter-spacing:-.06em}.brand img{width:175px;max-height:54px;object-fit:contain}.brand-symbol{display:grid;place-items:center;background:var(--pine);color:#fff;width:35px;height:35px;border-radius:10px;font-size:24px}.brand-sub{font-size:10px;vertical-align:middle;letter-spacing:.06em;color:var(--muted)}.main-nav{display:flex;gap:25px;margin:auto}.main-nav a{font-weight:650;font-size:14px;color:#40534C;white-space:nowrap}.main-nav a:hover,.footer a:hover{color:var(--electric-deep)}.head-actions{display:flex;align-items:center;gap:12px}.head-actions form{display:flex;border:1px solid var(--border);background:#F2F5F2;border-radius:999px;padding:3px 6px 3px 15px}.head-actions input{border:none;outline:none;background:transparent;width:140px;font-size:13px;min-width:0}.head-actions form button{border:0;background:var(--pine);color:#fff;border-radius:50%;height:31px;width:31px;font-size:23px;line-height:1}.menu-toggle,.mobile-menu,.mobile-overlay,.bottom-nav{display:none}.hero{margin-top:26px;min-height:420px;background:var(--pine-deep);border-radius:20px;display:grid;grid-template-columns:52% 48%;overflow:hidden}.hero-copy{padding:48px 7% 26px;color:#E8F4EF;position:relative;display:flex;flex-direction:column;align-items:flex-start}.hero-copy .eyebrow{color:#91DCD1}.hero-copy h1{color:#fff;font-size:clamp(34px,4.1vw,59px);margin:22px 0 13px;line-height:1.09}.hero-copy h1 em{color:#93D9CA;font-weight:500;font-style:normal}.hero-copy>p{font-size:15px;color:#CBDFD7;max-width:410px}.hero-rule{height:1px;background:#587369;width:100%;max-width:350px;margin-top:13px}.hero-actions{display:flex;gap:25px;align-items:center;margin-top:13px;flex-wrap:wrap}.link-light{color:#DFEFEB;font-size:14px}.hero-foot{font-size:10px;letter-spacing:.13em;color:#9FBFB2;margin-top:auto;padding-top:24px}.hero-visual{position:relative;min-width:0}.hero-visual .cover{height:100%;border-radius:0}.hero-visual .cover--empty{background:radial-gradient(circle at 70% 35%,#86CDBD 0,#35776C 19%,transparent 42%),linear-gradient(135deg,#2D655B,#152A2A)}.image-marker{position:absolute;bottom:24px;right:26px;font-size:10px;letter-spacing:.2em;color:#fff}.cover{position:relative;overflow:hidden;border-radius:14px;background:#DBE6DE;min-height:160px}.cover img{height:100%;width:100%;object-fit:cover;object-position:center}.cover--poster{aspect-ratio:2/3}.cover--wide{aspect-ratio:16/9}.cover--empty{background:linear-gradient(138deg,#E3EBE7 8%,#A7BFB6 53%,#6D9D8B);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:#315F51;text-align:center;padding:12px}.cover--empty span{font-size:clamp(42px,6vw,90px);font-weight:200;line-height:1}.cover--empty small{font-size:12px;letter-spacing:.04em}.channel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.channel{background:var(--paper);border:1px solid var(--border);border-top:3px solid var(--local);border-radius:13px;min-height:170px;padding:17px;display:flex;flex-direction:column;position:relative;transition:transform .18s}.channel:nth-child(2),.channel:nth-child(6){background:#E5EFEB}.channel:nth-child(3),.channel:nth-child(7){background:#EDF2F2}.channel:hover{transform:translateY(-3px)}.channel-no{font-size:10px;letter-spacing:.1em;color:var(--muted)}.channel-icon{font-size:24px;margin:5px 0}.channel strong{font-size:19px;color:var(--title)}.channel small{font-size:12px;color:var(--muted)}.channel .arrow{position:absolute;right:17px;bottom:17px;color:var(--local);font-size:20px}.video-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:19px}.video-card{background:var(--paper);border:1px solid var(--border);border-radius:16px;overflow:hidden;min-width:0}.video-card .cover{border-radius:0;aspect-ratio:16/10;min-height:0}.video-card .cover--poster img{object-fit:contain;background:#E7EDE9}.video-card>div:last-child{padding:19px}.video-card h3{margin:8px 0}.video-card p{font-size:13px;color:var(--muted);margin:0}.quiet{padding:37px 30px;background:#E8EFEB;border:1px dashed #BDCEC3;border-radius:14px;color:var(--pine);width:100%}.quiet strong{font-size:20px}.quiet p{margin:9px 0;font-size:14px}.quiet a{text-decoration:underline;font-weight:700}.split-feature{background:#E5ECE8}.split-inner{display:grid;grid-template-columns:30% 1fr;gap:5%}.split-inner>.section-heading{display:block}.split-inner h2{margin-top:12px}.split-inner>div:first-child>p{max-width:330px}.feature-feature{display:grid;grid-template-columns:56% 1fr;gap:6%;align-items:center}.feature-image .cover{aspect-ratio:16/9;min-height:340px}.feature-text p{max-width:450px;line-height:2}.feature-text h2{font-size:clamp(29px,3vw,43px);margin:20px 0}.feature-text .text-link{display:inline-block;margin-top:20px}.inverse{grid-template-columns:1fr 56%}.inverse .feature-image{order:2}.lab-section{background:#E7EEE9}.lab-grid{display:grid;grid-template-columns:1fr 1.25fr .6fr;gap:13px;min-height:290px}.lab-copy{background:var(--pine);padding:30px;color:#fff;border-radius:15px}.lab-copy h3{font-size:32px;color:#fff;margin:18px 0}.lab-copy p{font-size:14px;color:#C7DECF}.lab-copy>span,.lab-note strong{font-size:11px;letter-spacing:.15em}.lab-grid .cover{height:100%}.lab-note{border:1px solid var(--border);border-radius:15px;padding:27px;display:flex;flex-direction:column;justify-content:end}.lab-note p{font-size:14px}.knowledge{display:grid;grid-template-columns:1fr 1fr;gap:55px;align-items:center}.knowledge>div:first-child>p{margin:20px 0}.knowledge-sheet{background:#fff;padding:30px;border-left:5px solid var(--amber);border-radius:8px}.knowledge-sheet>span{font-size:11px;letter-spacing:.15em;color:var(--muted)}.knowledge-sheet>div{display:flex;justify-content:space-between;gap:20px;padding:14px 0;border-bottom:1px solid var(--border);font-size:13px;color:var(--pine)}.knowledge-sheet b{font-size:16px;font-weight:650;margin-right:auto}.collection-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.collection{min-height:264px;background:#E7EEE9;border:1px solid #D7E2DA;border-radius:14px;padding:27px;display:flex;align-items:flex-start;flex-direction:column;transition:background .18s}.collection:nth-child(3n+2){background:#E8EDF0}.collection:nth-child(3n){background:#F3EBDE}.collection:hover{background:#D6E6DE}.collection-icon{font-size:30px;margin-bottom:17px}.collection h3{font-size:22px;margin:11px 0}.collection p{font-size:13px;color:var(--body)}.inline-link{margin-top:auto;font-size:13px;font-weight:750;color:var(--pine)}.explore{background:var(--pine-deep);border-radius:17px;color:#fff;padding:48px}.explore h2{color:#fff}.explore .eyebrow{color:#83C8B8}.explore-links{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.explore-links a{border-top:1px solid #789A8D;padding:20px 0;font-weight:700}.explore-links span{float:right}.footer{margin-top:75px;background:#E0E9E4;border-top:1px solid var(--border)}.footer-main{padding:48px 0;display:flex;justify-content:space-between;gap:40px}.footer-brand{font-size:19px;color:var(--pine)}.footer-main p{margin:6px 0}.footer-main small{font-size:12px}.footer-main nav{display:flex;gap:22px;align-items:flex-start;font-size:14px}.footer-bottom{border-top:1px solid #C8D8CE;display:flex;justify-content:space-between;gap:15px;padding:13px 0;font-size:11px;color:#61726A}.pagehead{padding:65px 0 32px;max-width:800px}.pagehead h1{margin:15px 0}.pagehead p{font-size:16px;max-width:700px}.catalog-layout{display:grid;grid-template-columns:230px 1fr;gap:36px}.catalog-side{padding-top:70px}.sticky-panel{position:sticky;top:105px}.sticky-panel h2{font-size:23px}.side-item{display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--border);padding:11px 13px;font-size:13px}.side-item.selected{background:var(--pine);color:#fff;border-radius:6px}.filter{padding:16px;background:#fff;border:1px solid var(--border);border-radius:14px;display:flex;align-items:end;gap:10px;flex-wrap:wrap}.filter label{font-size:12px;font-weight:750;color:var(--pine);flex:1 1 135px}.filter input,.filter select{width:100%;height:43px;border:1px solid #CAD7CF;background:#F8FAF8;border-radius:6px;padding:0 10px;margin-top:5px;color:var(--title);min-width:0}.results-bar{display:flex;justify-content:space-between;border-bottom:1px solid var(--border);padding:25px 0 12px;margin-bottom:18px}.results-bar span{font-size:12px;color:var(--muted)}.catalog-channels{padding-top:80px}.catalog-channels .channel-grid{grid-template-columns:repeat(4,1fr)}.catalog-channels .channel{min-height:140px}.catalog-channels .channel strong{font-size:15px}.pagination{display:flex;gap:7px;margin-top:20px}.pagination a{background:#fff;padding:7px 15px;border-radius:5px}.pagination [aria-current=page]{background:var(--pine);color:#fff}.breadcrumb{font-size:12px;color:var(--muted);padding:28px 0}.breadcrumb a{text-decoration:underline}.detail-hero{display:grid;grid-template-columns:34% 1fr;gap:7%;align-items:center;background:#E6EDE8;border-radius:18px;padding:30px}.detail-hero>.cover{max-width:360px}.detail-info h1{margin:15px 0}.detail-intro{font-size:17px}.detail-info dl{display:grid;grid-template-columns:1fr 1fr;gap:7px 22px}.detail-info dl>div{border-top:1px solid #C8D6CE;padding:9px 0}.detail-info dt{font-size:12px;color:var(--muted)}.detail-info dd{margin:0;font-weight:700;font-size:14px}.status-info{background:#DAE5E0;color:var(--pine);padding:12px 15px;border-radius:8px;display:inline-block}.detail-body{display:grid;grid-template-columns:1.4fr 1fr;gap:10%}.detail-body p{line-height:2}.episode-grid{display:grid;grid-template-columns:1fr 1fr;gap:7px}.episode-grid a{padding:12px;background:#E2EBE5;border-radius:5px;font-size:13px}.watch-page{background:var(--player-bg);color:#D6DFDB;padding-bottom:60px}.watch-page .breadcrumb,.watch-page .breadcrumb a{color:#9BAFA7}.watch-heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin:10px 0 25px}.watch-heading h1{color:#fff;font-size:34px;margin:9px 0}.watch-heading>div>p{margin:0}.watch-heading>a{font-size:13px;color:#B0E2D4}.watch-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px}.player{background:#030505;aspect-ratio:16/9;display:grid;place-items:center;overflow:hidden}.player video{width:100%;height:100%;background:#030505}.unavailable{text-align:center;padding:25px}.unavailable span{font-size:47px;color:#74A798}.unavailable h2{color:#fff;font-size:22px;margin:8px 0}.unavailable p{color:#BAC7C1}.player-status{font-size:12px}.player-nav{display:flex;justify-content:space-between;gap:20px}.player-nav a{color:#B2E2D5}.playlist{padding:22px;border:1px solid #2D4240;background:#111C1B;border-radius:12px}.playlist h2{font-size:24px;color:#fff;margin:10px 0 17px}.playlist-items{max-height:420px;overflow:auto}.playlist-items a{display:flex;gap:15px;padding:13px 9px;border-bottom:1px solid #314341;font-size:13px}.playlist-items a[aria-current=page]{background:#244B43;color:#fff}.playlist-items span{color:#9BD2C2}.schedule-wrap{display:grid;grid-template-columns:275px 1fr;gap:40px;padding-top:20px}.schedule-wrap aside{padding:26px;background:#E2EBE5;border-radius:12px;height:max-content}.schedule-wrap label{display:block;font-weight:700}.schedule-wrap input{width:100%;border:1px solid #C1D4C9;border-radius:7px;padding:10px;margin:6px 0 16px}.small{font-size:12px}.schedule-wrap section{padding:20px 0}.schedule-row{display:flex;gap:28px;align-items:center;border-top:1px solid var(--border);padding:18px}.schedule-row>span{font-weight:800}.schedule-row>div{flex:1}.schedule-row h3{margin:0}.schedule-row p{font-size:12px;margin:0}.schedule-row>a{font-size:12px;color:var(--pine)}.collections-banner{background:linear-gradient(120deg,#17372F,#3F7367);padding:38px 44px;color:#fff;border-radius:14px;margin-bottom:30px}.collections-banner h2{color:#fff;font-size:38px;margin:20px 0}.collections-banner>span{font-size:11px;letter-spacing:.14em;color:#B0E2D6}.collections-banner p{font-size:13px}.collections-page .collection-grid{grid-template-columns:repeat(4,1fr)}.collection-hero{background:var(--pine-deep);color:#fff;border-radius:17px;padding:35px;display:grid;grid-template-columns:1fr 1fr;gap:25px;align-items:center}.collection-hero h1{color:#fff}.collection-hero .eyebrow{color:#A3DDD1}.collection-bigicon{font-size:54px;margin:25px 0 10px}.collection-hero .cover{min-height:280px}.essay{max-width:860px;margin:50px auto}.essay>p{font-size:18px;line-height:2.3;margin-bottom:40px}.essay h2{margin-top:35px}.about-layout{display:grid;grid-template-columns:43% 1fr;gap:8%;padding-top:30px}.about-lead{background:var(--pine);padding:40px;border-radius:16px;color:#DDECE6;height:max-content}.about-lead span{font-size:48px}.about-lead h2{color:#fff;margin:26px 0}.about-text section{border-top:1px solid var(--border);padding:22px 0}.about-text h2{font-size:24px}.empty-state{min-height:48vh;padding-top:70px}.empty-state h1{margin:16px 0}.bottom-nav{display:none}
@media(max-width:1120px){.wrap{width:calc(100% - 48px)}.main-nav{gap:13px}.head-actions input{width:85px}.brand-sub{display:none}.collections-page .collection-grid{grid-template-columns:repeat(3,1fr)}.catalog-layout{grid-template-columns:190px 1fr;gap:20px}.catalog-channels .channel-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:800px){.wrap{width:calc(100% - 36px)}.section{padding-block:46px}.main-nav,.head-actions form{display:none}.site-header{height:70px}.bar{justify-content:space-between}.menu-toggle{display:block;background:none;border:1px solid var(--border);border-radius:7px;font-size:22px;width:42px;height:42px;color:var(--pine)}.mobile-overlay:not([hidden]){display:block;position:fixed;inset:0;background:#0008;z-index:38}.mobile-menu:not([hidden]){display:flex;position:fixed;top:0;right:0;bottom:0;width:min(340px,85vw);z-index:39;background:#F8FBF9;flex-direction:column;padding:75px 24px 35px;gap:5px;box-shadow:-8px 0 30px #0003}.mobile-menu>a{padding:14px;border-bottom:1px solid var(--border);font-weight:700}.menu-close{position:absolute;right:24px;top:19px;border:0;font-size:30px;background:transparent}.bottom-nav{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:29;background:#F8FBF9;border-top:1px solid var(--border);justify-content:space-around;padding:6px 0 max(6px,env(safe-area-inset-bottom))}.bottom-nav a{display:flex;flex-direction:column;align-items:center;font-size:22px;line-height:1.3;color:var(--pine)}.bottom-nav span{font-size:11px}.footer{margin-bottom:65px}.hero{grid-template-columns:1fr;min-height:0}.hero-copy{padding:40px 28px 28px}.hero-visual{height:250px}.channel-grid{grid-template-columns:repeat(2,1fr)}.video-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.split-inner,.feature-feature,.inverse,.knowledge,.about-layout,.detail-body,.schedule-wrap{grid-template-columns:1fr;gap:22px}.inverse .feature-image{order:0}.lab-grid{grid-template-columns:1fr 1fr}.lab-note{display:none}.collection-grid{grid-template-columns:repeat(2,1fr)}.collections-page .collection-grid{grid-template-columns:repeat(2,1fr)}.explore-links{grid-template-columns:repeat(2,1fr)}.footer-main{flex-direction:column}.catalog-layout{grid-template-columns:1fr}.catalog-side{display:none}.catalog-main .pagehead{padding-top:45px}.watch-layout{grid-template-columns:1fr}.watch-heading{align-items:start;flex-direction:column}.playlist-items{max-height:250px}.detail-hero{grid-template-columns:1fr}.detail-hero>.cover{max-width:330px}.collection-hero{grid-template-columns:1fr}.collection-hero .cover{min-height:200px}.hero-copy h1{font-size:42px}}
@media(max-width:460px){.wrap{width:calc(100% - 32px)}.section-heading{align-items:start;flex-direction:column;gap:8px}.hero-copy{padding:28px 20px}.hero-copy h1{font-size:35px}.hero-visual{height:190px}.channel{min-height:146px;padding:13px}.channel strong{font-size:16px}.channel-icon{font-size:20px}.video-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.video-card>div:last-child{padding:10px}.video-card h3{font-size:14px}.video-card p{font-size:11px}.feature-image .cover{min-height:210px}.lab-grid{display:block}.lab-grid .cover{margin-top:12px}.knowledge-sheet{padding:17px}.collection-grid,.collections-page .collection-grid{grid-template-columns:1fr}.collection{min-height:215px}.explore{padding:25px}.explore-links{grid-template-columns:1fr}.footer-main nav{flex-wrap:wrap}.footer-bottom{flex-direction:column}.filter{flex-direction:column;align-items:stretch}.filter label{flex:auto}.catalog-channels .channel-grid{grid-template-columns:repeat(2,1fr)}.detail-info dl{grid-template-columns:1fr}.watch-heading h1{font-size:26px}.collection-hero{padding:23px}.about-lead{padding:25px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}