:root{--paper:#101713;--ink:#f2eee6;--muted:#a7b2aa;--green:#58cf8f;--green2:#17844f;--line:#2d3b33;--surface:#17211b;--raised:#1c2821;--soft:#203127;--deep:#0d271c;--glass:rgba(16,23,19,.94);--shadow:0 24px 70px rgba(0,0,0,.34)}
body[data-theme="comfort"]{--paper:#e9e4d8;--ink:#203128;--muted:#68756d;--green:#087642;--green2:#0b6a3f;--line:#c9cbbf;--surface:#f3efe5;--raised:#f8f4ea;--soft:#dfe7dc;--deep:#153226;--glass:rgba(239,234,222,.94);--shadow:0 24px 70px rgba(35,48,40,.14);color-scheme:light}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans SC","Microsoft YaHei","PingFang SC",system-ui,sans-serif;transition:.25s;background-color:.25s;color-scheme:dark}button,input,select{font:inherit}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;z-index:999;left:12px;top:-100px;padding:10px 14px;border-radius:8px;background:#fff;color:#102a20}.skip-link:focus{top:12px}.section-shell,.site-header,.site-footer{width:min(1440px,calc(100% - 64px));margin-inline:auto}.site-header{position:sticky;z-index:50;top:8px;min-height:74px;margin-top:8px;padding:10px 12px 10px 18px;display:flex;align-items:center;justify-content:space-between;gap:22px;border:1px solid var(--line);border-radius:22px;background:var(--glass);box-shadow:0 10px 35px rgba(0,0,0,.15);backdrop-filter:blur(18px)}.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}.brand>span,.footer-brand>span{width:44px;height:44px;display:grid;place-items:center;border-radius:50%;background:var(--green2);color:#fff;font:700 21px/1 Georgia,serif}.brand strong{font-size:24px;letter-spacing:.05em}.main-nav{display:flex;align-items:center;gap:clamp(14px,1.7vw,28px);font-size:13px;font-weight:700}.main-nav a{position:relative;padding:19px 0}.main-nav a.active{color:var(--green)}.main-nav a.active:after{content:"";position:absolute;left:0;right:0;bottom:10px;height:2px;background:var(--green)}.header-actions{display:flex;align-items:center;gap:8px}.theme-control{height:43px;padding:0 10px;display:flex;align-items:center;gap:5px;border:1px solid var(--line);border-radius:13px;background:var(--surface);color:var(--muted)}.theme-control span{color:var(--green)}.theme-control select{width:70px;border:0;outline:0;background:transparent;color:inherit;font-size:10px;font-weight:700}.theme-control option{background:var(--raised);color:var(--ink)}.language-link{height:43px;min-width:43px;display:grid;place-items:center;border:1px solid var(--line);border-radius:13px;color:var(--muted);font-size:10px;font-weight:800}.auth-links{height:43px;display:flex;align-items:center;overflow:hidden;border:1px solid var(--line);border-radius:13px;color:var(--muted);font-size:10px;font-weight:800}.auth-links a{height:100%;padding:0 10px;display:grid;place-items:center}.auth-links a+a{border-left:1px solid var(--line);color:var(--green)}.upload-link{padding:13px 20px;border-radius:13px;background:var(--green2);color:#fff;font-size:12px;font-weight:800}.menu-button{display:none;padding:10px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--ink)}
.hero{padding:24px 0 52px}.category-tabs{display:flex;gap:7px;overflow:auto;padding-bottom:12px;scrollbar-width:none}.category-tabs a{flex:0 0 auto;padding:9px 14px;border-radius:9px;background:var(--surface);color:var(--muted);font-size:10px;font-weight:750}.category-tabs a.active{background:var(--green2);color:#fff}.search-form{height:58px;margin-bottom:18px;padding:6px 6px 6px 17px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;border:1px solid var(--line);border-radius:15px;background:var(--surface)}.search-form>span{color:var(--green);font-size:25px;transform:rotate(-18deg)}.search-form input{min-width:0;height:100%;border:0;outline:0;background:transparent;color:var(--ink);font-size:12px}.search-form input::placeholder{color:var(--muted)}.search-form button{height:44px;padding:0 24px;border:0;border-radius:10px;background:var(--green2);color:#fff;font-size:11px;font-weight:800}.hero-grid{min-height:570px;display:grid;grid-template-columns:minmax(0,1.75fr) minmax(340px,.7fr);overflow:hidden;border:1px solid var(--line);border-radius:24px;background:var(--deep);box-shadow:var(--shadow)}.feature-video{position:relative;min-height:570px;padding:0;border:0;overflow:hidden;background:#173425;color:#fff;text-align:left;cursor:pointer}.feature-video>img{width:100%;height:100%;object-fit:cover;transition:transform .65s}.feature-video:hover>img{transform:scale(1.035)}.shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,20,14,0) 22%,rgba(6,20,14,.88) 100%);pointer-events:none}.source-label{position:absolute;z-index:2;left:24px;top:23px;padding:8px 10px;display:flex;align-items:center;gap:7px;border:1px solid rgba(255,255,255,.28);border-radius:999px;background:rgba(8,35,23,.72);color:rgba(255,255,255,.78);font-size:8px}.source-label b{color:#b7df48}.source-label i{padding:2px 4px;border-radius:3px;background:#fff;color:#102a20;font-size:7px;font-style:normal}.feature-copy{position:absolute;z-index:2;left:clamp(25px,4vw,54px);right:100px;bottom:42px}.feature-copy small,.feature-copy strong,.feature-copy>span{display:block}.feature-copy small{color:#b7df48;font-size:10px;font-weight:800}.feature-copy strong{max-width:760px;margin:12px 0;font:600 clamp(30px,3.7vw,52px)/1.13 Georgia,"Songti SC",serif}.feature-copy>span{color:rgba(255,255,255,.72);font-size:10px}.play{display:grid;place-items:center;width:52px;height:52px;padding-left:3px;border-radius:50%;background:rgba(255,255,255,.94);color:#17844f;box-shadow:0 10px 35px rgba(0,0,0,.18)}.feature-video>.play{position:absolute;z-index:2;right:35px;bottom:41px}.action-panel{padding:30px 24px;color:#fff}.eyebrow{margin:0;color:var(--green);font-size:10px;font-weight:800;letter-spacing:.08em}.action-panel .eyebrow{color:#b7df48}.action-panel h1{margin:6px 0 0;font:600 30px/1.2 Georgia,"Songti SC",serif}.action-panel nav{margin-top:24px;display:grid;gap:9px}.action-panel nav a{min-height:86px;padding:14px;display:grid;grid-template-columns:40px 1fr auto;align-items:center;gap:12px;border:1px solid rgba(255,255,255,.13);border-radius:14px;background:rgba(255,255,255,.04)}.action-panel nav a:hover{border-color:rgba(88,207,143,.55);background:rgba(88,207,143,.08)}.action-panel nav a.primary{border-color:#17844f;background:#17844f}.action-panel nav a>span{width:40px;height:40px;display:grid;place-items:center;border-radius:11px;background:rgba(255,255,255,.1);color:#b7df48;font:700 13px/1 Georgia,serif}.action-panel nav strong,.action-panel nav small{display:block}.action-panel nav strong{font:600 14px/1.35 Georgia,"Songti SC",serif}.action-panel nav small{margin-top:5px;color:rgba(255,255,255,.58);font-size:8px;line-height:1.45}.action-panel nav i{color:#58cf8f;font-style:normal}.action-panel nav a.primary i{color:#fff}
.content-section{padding:72px 0 24px}.section-head{margin-bottom:19px;display:flex;align-items:end;justify-content:space-between;gap:22px}.section-head h2{margin:0;font:600 clamp(32px,3.7vw,50px)/1.08 Georgia,"Songti SC",serif;letter-spacing:-.035em}.section-head>a{padding-bottom:5px;color:var(--green);font-size:10px;font-weight:750}.source-note{margin-bottom:19px;padding:12px 15px;display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:12px;background:var(--surface)}.source-note span{flex:0 0 auto;padding:5px 8px;border-radius:6px;background:var(--soft);color:var(--green);font-size:8px;font-weight:800}.source-note p{margin:0;color:var(--muted);font-size:9px;line-height:1.6}.country-filters{margin-bottom:15px;display:flex;gap:7px;overflow:auto}.country-filters button{flex:0 0 auto;height:34px;padding:0 12px;border:1px solid var(--line);border-radius:999px;background:transparent;color:var(--muted);font-size:9px}.country-filters button.active{border-color:var(--green2);background:var(--green2);color:#fff}.video-grid{display:grid;grid-template-columns:repeat(5,minmax(240px,1fr));gap:14px;overflow:auto;padding-bottom:8px;scroll-snap-type:inline mandatory;scrollbar-width:none}.video-card{min-width:0;scroll-snap-align:start}.video-card>button{width:100%;padding:0;border:0;background:transparent;color:var(--ink);text-align:left;cursor:pointer}.thumb{position:relative;display:block;width:100%;aspect-ratio:16/9;overflow:hidden;border-radius:16px;background:var(--soft)}.thumb img{width:100%;height:100%;object-fit:cover;transition:.45s}.video-card:hover img{transform:scale(1.035)}.thumb .play{position:absolute;z-index:2;left:50%;top:50%;width:43px;height:43px;transform:translate(-50%,-50%);font-size:11px}.thumb i{position:absolute;z-index:2;right:9px;bottom:9px;padding:3px 5px;border-radius:4px;background:rgba(8,25,16,.8);color:#fff;font-size:7px;font-style:normal}.card-copy{display:block;padding:12px 4px}.card-copy small,.card-copy strong,.card-copy>span{display:block}.card-copy small{color:var(--green);font-size:8px;font-weight:800}.card-copy strong{min-height:47px;margin:7px 0 6px;font:600 16px/1.45 Georgia,"Songti SC",serif}.card-copy>span{color:var(--muted);font-size:8px}
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.modal{position:fixed;z-index:100;inset:0;padding:24px;display:grid;place-items:center;background:rgba(4,11,7,.76);backdrop-filter:blur(8px)}.modal[hidden]{display:none}.modal>section{position:relative;width:min(980px,100%);max-height:92vh;overflow:auto;border:1px solid var(--line);border-radius:20px;background:var(--raised);box-shadow:0 30px 90px rgba(0,0,0,.4)}.modal-close{position:absolute;z-index:3;right:13px;top:13px;width:36px;height:36px;border:0;border-radius:50%;background:rgba(12,25,17,.78);color:#fff;font-size:21px}.player{aspect-ratio:16/9;background:#0a100c}.player iframe{width:100%;height:100%;border:0}.modal-copy{padding:24px}.modal-copy>p:first-child{margin:0;color:var(--green);font-size:9px;font-weight:800}.modal-copy h2{margin:8px 0;font:600 28px/1.25 Georgia,"Songti SC",serif}.modal-copy .original{margin:0 0 17px;color:var(--muted);font-size:9px}.modal-copy label{display:flex;align-items:center;gap:10px;font-size:9px}.modal-copy select{padding:8px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink)}.caption-note{color:var(--muted);font-size:8px}.modal-copy>a{display:inline-block;margin-top:8px;padding:10px 13px;border-radius:8px;background:var(--soft);color:var(--green);font-size:9px;font-weight:750}
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@media(max-width:560px){.theme-control span{display:none}.theme-control{padding:0 7px}.theme-control select{width:52px}.language-link{display:none}.auth-links a:last-child{display:none}.search-form{height:54px;padding-left:12px}.search-form button{padding:0 16px}.feature-video{min-height:430px}.feature-copy{left:20px;right:20px;bottom:24px}.feature-copy strong{font-size:29px}.feature-video>.play{right:20px;bottom:118px}.source-label{left:15px;top:15px}.action-panel nav{grid-template-columns:1fr}.action-panel nav a{min-height:82px}.section-head{align-items:flex-start}.section-head h2{font-size:33px}.source-note{align-items:flex-start}.video-grid{grid-template-columns:repeat(5,82%)}.tree summary{grid-template-columns:38px 1fr 28px;padding:15px 13px;gap:10px}.tree ul{padding:3px 13px 16px 61px;grid-template-columns:1fr}.knowledge-grid{grid-template-columns:1fr}.knowledge-grid>a:last-child{grid-column:auto}.participate{padding:28px 20px}.participate>div:last-child{grid-template-columns:1fr}.participate a.primary{grid-column:auto}.site-footer{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.modal{padding:9px}.modal-copy{padding:19px}.modal-copy h2{font-size:22px}}