:root{--background:#F1F3F1;--paper:#FBFCFA;--surface:#FFF;--surface-soft:#E9EEEB;--pine:#234B43;--pine-deep:#17372F;--electric:#237E78;--amber:#C88A45;--graphite:#252E30;--body:#485651;--muted:#75817C;--border:#DCE4DF}*{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}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,input,select{outline-offset:3px}button{cursor:pointer}h1,h2,h3,p{margin-top:0}h1,h2,h3,strong{color:var(--graphite)}h1{font-size:clamp(30px,4.2vw,52px);line-height:1.22}h2{font-size:clamp(23px,2.4vw,29px);line-height:1.3}h3{font-size:21px;line-height:1.4}small{font-size:13px}.container{width:min(1360px,calc(100% - 64px));margin:auto}.skip{position:absolute;top:-100px;left:10px;background:white;padding:12px;z-index:99}.skip:focus{top:10px}.site-header{background:rgba(251,252,250,.97);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:30}.header-inner{height:76px;display:flex;align-items:center;gap:30px}.brand{display:flex;align-items:center;gap:10px;color:var(--pine);font-weight:900;font-size:20px;white-space:nowrap}.brand em{display:block;color:var(--muted);font:600 9px/1.3 system-ui;letter-spacing:.22em}.brand-logo{height:43px;max-width:50px;object-fit:contain}.brand-logo.missing{width:36px;height:36px;background:var(--pine);border-radius:7px;color:white;display:flex;align-items:center;justify-content:center;font-size:8px}.brand-logo.missing span{font-size:0}.brand-logo.missing:after{content:'YC'}.desktop-nav{display:flex;gap:22px;font-size:14px;font-weight:650;white-space:nowrap}.desktop-nav a:hover,.text-link:hover{color:var(--electric)}.header-search{margin-left:auto;display:flex;border:1px solid var(--border);background:#fff;border-radius:50px;height:42px;padding:0 5px 0 15px;min-width:190px}.header-search input{width:140px;border:0;outline:0;background:none;font-size:13px}.header-search button{border:0;background:var(--pine);border-radius:50%;color:white;width:32px}.menu-toggle,.mobile-menu,.mobile-bottom{display:none}.hero{display:grid;grid-template-columns:1fr 1.05fr;min-height:410px;background:var(--pine-deep);border-radius:22px;overflow:hidden;margin-top:28px;color:#fff}.hero-copy{padding:clamp(28px,5vw,65px);display:flex;flex-direction:column;justify-content:center}.hero h1{color:white;letter-spacing:-.035em}.hero h1 span{color:#a9dfd3}.hero-copy>p:not(.eyebrow){max-width:440px;color:#d0e1db}.eyebrow{font-size:11px;letter-spacing:.22em;font-weight:800;color:var(--electric);text-transform:uppercase}.hero .eyebrow{color:#7addcc}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:19px}.btn{border:1px solid var(--pine);background:var(--pine);color:#fff;padding:10px 20px;min-height:44px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;gap:15px;font-weight:700;font-size:14px}.btn:hover{background:var(--pine-deep)}.btn.secondary{background:transparent;color:var(--pine)}.hero .btn{background:#d8efe6;color:var(--pine-deep);border-color:#d8efe6}.hero .btn.secondary{background:transparent;color:#fff;border-color:#66877a}.hero-visual{position:relative;min-height:360px;background:radial-gradient(circle at 70% 30%,#579689,transparent 48%),linear-gradient(135deg,#244c43,#0b2626)}.hero-image{height:100%;width:100%;object-fit:cover}.hero-image.missing{display:flex;align-items:center;justify-content:center;background:radial-gradient(circle at 70% 30%,#579689,transparent 40%),repeating-linear-gradient(112deg,transparent 0 72px,#ffffff09 73px 75px),#19463f;color:#d9f4ea}.hero-image.missing:before{content:'◉';font-size:130px;position:absolute;opacity:.18}.hero-image.missing span{max-width:200px;text-align:center;position:relative;font-weight:700;letter-spacing:.2em}.hero-index{position:absolute;bottom:21px;right:26px;color:white;letter-spacing:.3em;font-size:11px}.section{padding:66px 0 8px}.section-top{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:25px}.section-top h2{margin-bottom:0}.section-top p{max-width:385px;font-size:14px;margin:0}.channel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.channel{display:flex;flex-direction:column;background:#fff;min-height:230px;border-radius:14px;overflow:hidden;border:1px solid var(--border);transition:transform .2s}.channel:hover,.topic-card:hover{transform:translateY(-3px)}.channel:nth-child(3n+2){background:#edf3f0}.channel:nth-child(5n){background:#f9f0e5}.channel-pic{height:105px;overflow:hidden}.channel-pic .art{border-radius:0}.art{width:100%;height:100%;object-fit:cover}.art.missing{display:flex;align-items:center;justify-content:center;background:linear-gradient(130deg,var(--accent,#315e54),#e0e9e4);color:white;text-align:center;font-weight:800}.channel .channel-num{font-size:11px;color:var(--accent);font-weight:900;letter-spacing:.1em;padding:13px 16px 0}.channel strong{font-size:19px;padding:0 16px}.channel small{padding:0 16px 14px;color:var(--muted)}.editorial-empty{border:1px solid var(--border);background:linear-gradient(115deg,#fff,#e8f0ec);border-radius:16px;padding:36px 38px;min-height:205px;display:flex;flex-direction:column;justify-content:center;align-items:flex-start}.editorial-empty>span{font-size:11px;letter-spacing:.2em;color:var(--electric);font-weight:700}.editorial-empty h3{margin:8px 0}.editorial-empty p{margin-bottom:8px;max-width:640px}.module:nth-of-type(even) .editorial-empty{background:linear-gradient(115deg,#eaf0ed,#fff)}.module-rail .editorial-empty,.module-stage .editorial-empty{border-left:6px solid var(--amber)}.module-wide .editorial-empty{min-height:280px;background:linear-gradient(120deg,#204940,#668b81);color:#f3f7f6}.module-wide .editorial-empty h3{color:#fff}.module-wide .editorial-empty>span,.module-wide .text-link{color:#caf2e6}.module-mosaic .editorial-empty{max-width:900px;margin:auto}.module-knowledge .editorial-empty{border-radius:28px 8px 28px 8px}.text-link{color:var(--electric);font-weight:750}.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.topic-grid.full{grid-template-columns:repeat(2,1fr)}.topic-card{background:#e7eee9;min-height:215px;border:1px solid var(--border);border-radius:15px;padding:25px;transition:transform .2s}.topic-card:nth-child(3n+2){background:#f4ece2}.topic-card:nth-child(3n+3){background:#e1ecef}.topic-card>span{letter-spacing:.15em;font-size:11px;color:var(--electric)}.topic-card h2,.topic-card h3{margin:15px 0 10px}.topic-card p{font-size:14px}.continue{background:var(--surface-soft);border-radius:18px;padding:40px;margin:70px 0}.page{padding-top:32px;min-height:67vh}.page-banner{padding:45px;background:#e6efea;border-radius:19px;margin-bottom:28px}.page-banner h1{margin:10px 0}.page-banner p{max-width:660px;margin:0}.catalog-layout{display:grid;grid-template-columns:250px 1fr;gap:34px}.filter-panel{background:white;padding:24px;border-radius:15px;border:1px solid var(--border);align-self:start}.filter-panel h2{font-size:20px}.filter-panel label{display:block;font-size:13px;font-weight:700;margin:14px 0}.filter-panel input,.filter-panel select{display:block;margin-top:6px;padding:10px;width:100%;border:1px solid var(--border);border-radius:8px;background:white}.filter-panel button{width:100%}.video-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.video-card{background:white;border:1px solid var(--border);border-radius:14px;overflow:hidden}.video-card .art{height:190px}.video-card .card-copy{display:block;padding:15px}.video-card strong{display:block}.video-card small{display:block;color:var(--muted)}.pill-list{display:flex;flex-wrap:wrap;gap:10px}.pill-list a{background:white;border:1px solid var(--border);border-radius:50px;padding:10px 15px}.pagination{display:flex;justify-content:center;gap:15px;margin:25px}.pagination a{background:white;padding:7px 17px;border-radius:8px}.crumb{font-size:13px;margin-bottom:22px;color:var(--muted)}.crumb a{color:var(--electric)}.detail-hero{display:grid;grid-template-columns:42% 1fr;gap:35px;background:white;padding:24px;border-radius:18px}.detail-poster{width:100%;height:330px;object-fit:cover;border-radius:12px}.detail-copy{align-self:center}.metadata{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}.metadata span{background:var(--surface-soft);border-radius:40px;padding:6px 12px;font-size:13px}.notice{padding:18px;background:#e9eee9;border-left:3px solid var(--electric);border-radius:6px}.reading{max-width:850px;font-size:17px;line-height:2.05}.info-panel{background:white;padding:22px;border-radius:14px;display:grid;grid-template-columns:1fr 1fr;gap:10px}.info-panel p{margin:0}.episode-row{display:flex;justify-content:space-between;align-items:center;gap:12px;background:white;padding:16px;border-bottom:1px solid var(--border)}.episode-row a{color:var(--electric)}.date-form{display:flex;align-items:end;gap:13px;margin:20px 0}.date-form label{font-weight:700}.date-form input{padding:8px;border:1px solid var(--border);border-radius:8px}.schedule-panel,.topic-feature{padding:25px;background:white;border-radius:18px}.topic-feature .reading{white-space:normal}.topic-symbol{font-size:55px}.about-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:20px 0 70px}.about-grid section{background:white;padding:28px;border-radius:16px;border:1px solid var(--border)}.site-footer{margin-top:65px;background:#18382f;color:#d3e2db;padding:45px 0}.site-footer strong{color:#fff}.footer-inner{display:flex;justify-content:space-between;gap:25px}.footer-inner>div:last-child{display:flex;gap:20px;flex-wrap:wrap}.footer-inner a:hover{text-decoration:underline}@media(max-width:1080px){.desktop-nav{gap:12px}.header-search{min-width:145px}.header-search input{width:100px}.channel-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:760px){.container{width:calc(100% - 34px)}.desktop-nav,.header-search{display:none}.menu-toggle{margin-left:auto;border:0;background:none;color:var(--pine);display:block;font-size:26px;min-width:44px;min-height:44px}.mobile-menu{display:flex;flex-direction:column;gap:12px;padding:28px;position:fixed;z-index:51;right:0;top:0;height:100dvh;width:min(320px,88vw);background:#fff;transform:translateX(110%);transition:transform .2s;box-shadow:-8px 0 30px #0002}.mobile-menu.open{transform:translateX(0)}.mobile-menu a{padding:10px;border-bottom:1px solid var(--border)}.menu-close{align-self:end;border:0;background:none;font-size:32px}.menu-overlay:not([hidden]){position:fixed;inset:0;background:#0008;z-index:50}.mobile-bottom{display:flex;justify-content:space-around;position:fixed;bottom:0;left:0;right:0;background:white;border-top:1px solid var(--border);z-index:29;padding:8px 5px max(8px,env(safe-area-inset-bottom));font-size:13px}.mobile-bottom a{min-height:44px;display:flex;align-items:center}.site-footer{padding-bottom:100px}.hero{grid-template-columns:1fr;min-height:0}.hero-copy{padding:32px 27px}.hero h1{font-size:34px}.hero-visual{min-height:225px}.section{padding-top:48px}.section-top{display:block}.section-top p{margin-top:8px}.channel{min-height:210px}.channel-pic{height:90px}.channel strong{font-size:17px}.channel small{font-size:12px}.catalog-layout{display:block}.filter-panel{margin-bottom:25px}.topic-grid,.topic-grid.full,.about-grid{grid-template-columns:1fr}.detail-hero{grid-template-columns:1fr}.detail-poster{height:270px}.video-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.video-card .art{height:145px}.page-banner{padding:28px}.footer-inner{display:block}.footer-inner>div:last-child{margin-top:20px}.info-panel{grid-template-columns:1fr}.continue{margin:45px 0;padding:28px}.date-form{flex-wrap:wrap}.editorial-empty{padding:25px}}@media(max-width:360px){.channel-grid{gap:8px}.channel small{line-height:1.35}.channel{min-height:195px}.video-grid{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}