:root{--paper:#f7f8f2;--ink:#172d25;--muted:#69766f;--line:#e0e5dc;--green:#167154;--lime:#d0f16b;--white:#fff;--radius:20px;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-size:15px;line-height:1.65}
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var(--line);background:var(--white);border-radius:var(--radius);padding:24px}.card+.card{margin-top:16px}.stack{display:grid;gap:18px}.notice{background:#edf4e9;border:1px solid #dce8d4;border-radius:13px;padding:13px 16px;font-size:13px}.notice.warning{background:#fff7e5;border-color:#f1e2bd;color:#775b28}.notice.error{background:#fff0e9;border-color:#efcfbf;color:#943c27}.notice a{color:var(--green);text-decoration:underline}.checkline{display:flex;align-items:flex-start;gap:10px;min-height:44px;padding:8px 0}.checkline span{margin:0!important;font-size:14px!important}.reviewbar{min-height:42px;background:#172d25;color:#fff;padding:7px 24px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:11px}.reviewbar b{font-size:12px;margin-right:18px}.reviewbar span{color:#c0d0c7}.review-actions{display:flex;align-items:center;gap:6px;flex-shrink:0}.review-actions button,.review-actions summary{background:none;color:#d9efb7;border:0;padding:5px 9px;min-height:30px;font-size:11px}.review-actions button[aria-pressed=true]{background:#ffffff18;border-radius:6px}.review-actions details{position:relative}.review-menu{position:absolute;top:32px;right:0;background:var(--white);box-shadow:0 12px 30px #172d2520;border-radius:12px;z-index:20;width:190px;padding:8px}.review-menu button{color:var(--ink);display:block;width:100%;text-align:left;min-height:44px}.surface{width:100%;margin:auto;background:var(--paper);min-height:calc(100vh - 42px)}.surface.mobile{width:min(390px,100%);border-inline:1px solid var(--line);box-shadow:0 8px 50px #172d2515}.canvas{container-type:inline-size;min-height:inherit}.header{height:88px;max-width:1200px;padding:0 36px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:18px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:11px}.brand-mark{width:34px;height:34px;border-radius:50% 50% 50% 8px;background:var(--lime);display:grid;place-items:center;font-size:18px;font-weight:700}.brand strong{font-size:16px}.brand small{display:block;line-height:1.4;color:var(--muted);font-size:11px}.header nav{display:flex;align-items:center;gap:22px;font-size:13px}.header nav a{min-height:44px;display:flex;align-items:center}.avatar{width:34px;height:34px;border-radius:50%;background:#dee8da;display:grid;place-items:center;font-size:13px}.content{max-width:1150px;margin:0 auto;padding:36px 30px 0;min-height:calc(100vh - 200px)}.page-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:26px}.page-heading p{margin-top:9px;color:var(--muted);font-size:14px}.greeting{padding-top:14px}.steps{display:flex;gap:0;align-items:center;max-width:620px;margin:0 0 28px;list-style:none;padding:0}.steps li{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);flex:1}.steps 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p{font-size:13px;color:var(--muted);margin-top:7px}.question-chips{display:flex;gap:7px;flex-wrap:wrap;margin:16px 0}.question-chips button{border:1px solid #dce4d2;background:white;border-radius:16px;padding:7px 11px;font-size:12px;min-height:36px}.ask-form{display:flex;gap:8px;align-items:flex-end;margin-top:14px}.ask-form textarea{min-height:52px;height:56px;font-size:15px;background:white;resize:vertical}.ask-form .btn{min-height:52px;width:66px;flex-shrink:0;padding:8px}.answer{margin-top:17px;border-top:1px solid #dae2d3;padding-top:16px}.answer p{color:var(--ink);font-size:14px;line-height:1.85}.answer .question{font-size:13px;color:var(--green);margin-bottom:12px}.answer .caption{font-size:11px;color:var(--muted);margin-top:10px}.answer .time-button{margin-top:10px}.visitor-container{max-width:850px;margin:auto;padding-bottom:36px}.visitor-container .video-knowledge{padding:27px 0}.visitor-container .player{border-radius:20px}.public-author{font-size:12px;color:var(--muted);margin:11px 0}.settings{max-width:680px;margin:0 auto 25px}.settings form{display:grid;gap:24px}.settings .card{margin:0}.settings .field{margin:17px 0}.settings h3{margin-bottom:12px}.settings .save-state{margin-top:14px}.unavailable{max-width:650px;margin:70px auto;text-align:center;padding:45px 28px}.unavailable .symbol{width:65px;height:65px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;margin:0 auto 22px;font-size:25px}.unavailable p{color:var(--muted);margin:15px 0 25px}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:30;background:var(--ink);color:white;border-radius:12px;padding:12px 20px;font-size:13px;box-shadow:0 5px 20px #172d2526;max-width:calc(100vw - 32px);text-align:center}.toast[hidden]{display:none}dialog{border:1px solid var(--line);border-radius:24px;padding:34px;width:min(520px,calc(100vw - 30px));color:var(--ink);background:var(--paper);max-height:90dvh;overflow:auto}dialog::backdrop{background:#172d2566;backdrop-filter:blur(3px)}dialog h2{margin-bottom:13px}dialog>p{font-size:14px}.close{position:absolute;right:10px;top:10px}.upload-zone{display:flex;flex-direction:column;align-items:center;border:1px dashed #9eaf95;padding:26px 15px;margin:24px 0 12px;border-radius:17px;cursor:pointer;background:#f0f4e8;gap:5px;text-align:center}.upload-zone .upload-icon{font-size:26px;margin-bottom:5px}.upload-zone input{margin:12px 0 0;max-width:100%;font-size:12px}.upload-zone strong{font-size:15px}.upload-zone .muted{font-size:12px}.sample-option{border-top:1px solid var(--line);margin-top:23px;padding-top:23px;display:grid;gap:15px}.sample-option p{font-size:13px}.sample-option+.caption{margin-top:17px}.file-result{padding:15px;background:white;border:1px solid var(--line);border-radius:12px;font-size:13px}.file-result 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@container(max-width:720px){.header{height:74px;padding:0 20px}.header nav{gap:13px}.header nav .desktop-only{display:none}.content{padding:26px 18px 0}.page-heading{gap:10px;margin-bottom:22px}.page-heading h1{font-size:26px}.page-heading p{font-size:13px}.page-heading .btn{padding:9px 13px;font-size:12px}.steps{margin-bottom:24px}.steps li{font-size:11px;gap:6px}.steps li:not(:last-child)::after{margin:0 7px}.steps span{width:22px;height:22px;font-size:10px}.work-grid,.preview-layout{grid-template-columns:minmax(0,1fr);gap:20px}.player-column,.publish-panel{position:static}.player-column{margin-bottom:3px}.player-caption{padding:12px 0 0}.task-summary{gap:9px;margin:24px 0}.stat{padding:15px 12px;border-radius:15px}.stat strong{font-size:25px}.stat small{font-size:11px}.greeting{padding-top:0}.intro-card{padding:20px;align-items:flex-start;flex-direction:column}.intro-card .btn{width:100%}.library-heading{flex-wrap:wrap}.video-row{padding:15px;gap:12px;flex-wrap:wrap}.thumbnail{width:91px;border-radius:9px;padding:9px;aspect-ratio:1/1}.video-row h3{font-size:15px;margin:5px 0}.video-row .metadata{font-size:11px}.video-row .badge{font-size:10px}.video-actions{width:100%;border-top:1px solid var(--line);padding-top:12px;flex-direction:row;align-items:center;justify-content:flex-end}.video-actions .btn{min-height:42px}.subtitle{padding:17px}.subtitle textarea{font-size:16px}.card,.content-card{padding:19px}.content-card h3{font-size:18px}.actionbar{padding-top:14px;margin-top:24px;gap:10px}.actionbar .btn{padding:11px 17px;font-size:13px;min-height:48px;flex-shrink:0}.actionbar p{font-size:11px;max-width:45%}.actionbar .save-state{font-size:11px}.preview-sheet .video-knowledge{padding:19px}.video-knowledge h1{font-size:25px}.video-knowledge .intro{font-size:13px}.preview-sheet .player{border-radius:0}.publish-panel .btn{min-height:49px}.publish-success{padding:20px}.visitor-container .video-knowledge{padding:20px 0}.ask-box{padding:18px}.public-card{padding:18px}.settings .card{padding:20px}.footer{padding-bottom:24px}.content:has(.unavailable){padding-top:0}.unavailable{margin:40px auto;padding:25px 10px}}
@media(max-width:700px){.reviewbar{padding:8px 12px;align-items:flex-start}.reviewbar>div:first-child span{display:block;font-size:10px;max-width:210px}.reviewbar b{font-size:11px}.review-actions>button{display:none}.review-actions summary{font-size:10px}.reviewbar .review-actions{gap:0}.surface.mobile{border:0;box-shadow:none}.dialog-actions{flex-wrap:wrap}.dialog-actions .btn{flex:1}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;scroll-behavior:auto!important}}