/* Scoped product spaces. Current mini-program geometry and semantic icons,
   with the whiter page surface requested for this merged website. */
.yc-space{--yc-body:MiSans,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;--yc-title:Douyin,"Douyin Sans",MiSans,"PingFang SC",sans-serif;font:400 15px/1.6 var(--yc-body);color:var(--yc-ink,#1c1813);background:var(--yc-bg,#faf9f6);min-height:calc(100vh - 120px)}
.yc-space *{box-sizing:border-box}.yc-space h1,.yc-space h2,.yc-space h3,.yc-space h4,.yc-space p{margin:0}.yc-space a{color:inherit;text-decoration:none}.yc-space button,.yc-space input,.yc-space textarea{font:inherit}.yc-space button{cursor:pointer;color:inherit;border:0;background:transparent}.yc-space button:disabled{cursor:default;opacity:.45}.yc-space button:focus-visible,.yc-space a:focus-visible,.yc-space input:focus-visible,.yc-space textarea:focus-visible,.yc-space summary:focus-visible{outline:2px solid var(--yc-muted,#796c55);outline-offset:4px}.yc-space [hidden]{display:none!important}.yc-space .yc-icon{display:inline-flex;width:22px;height:22px;flex:none;align-items:center;justify-content:center;object-fit:contain}.yc-space .yc-icon svg{display:block;width:100%;height:100%}.yc-space .yc-meta{font-size:12px;line-height:1.6;color:var(--yc-muted,#796c55)}
.yc-product-nav{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:15px max(32px,calc((100vw - 1360px)/2));background:var(--yc-paper,#fff);border-bottom:1px solid #eae5dc}.yc-product-label{display:flex;align-items:center;gap:16px;font-size:13px;color:var(--yc-muted,#796c55)}.yc-brand-small{font:400 24px/1 var(--yc-title);color:var(--yc-ink,#1c1813)}.yc-role-switch{display:flex;gap:2px;background:var(--yc-sunk,#f5f1e9);border-radius:8px;padding:3px}.yc-role-switch a{min-height:44px;display:flex;align-items:center;justify-content:center;padding:0 14px;border-radius:6px;font-size:12px;white-space:nowrap}.yc-role-switch a.is-active{background:#fff;box-shadow:0 1px 5px #39280c0a;color:var(--yc-red,#f5350c)}
.yc-workspace{max-width:1424px;margin:auto;display:grid;grid-template-columns:214px minmax(0,1fr);min-height:calc(100vh - 160px)}.yc-sidebar{padding:32px 16px 32px 24px;border-right:1px solid #eae5dc;display:flex;flex-direction:column;align-items:stretch;gap:28px}.yc-side-identity{display:flex;align-items:center;gap:10px;padding:0 12px}.yc-avatar{display:inline-flex;width:36px;height:36px;background:#eee4d4;color:#796c55;border-radius:50%;align-items:center;justify-content:center;flex:none;font-size:14px}.yc-side-identity strong{display:block;font-weight:500;font-size:14px}.yc-side-identity small{display:block;font-size:11px;color:var(--yc-muted,#796c55);margin-top:3px}.yc-sidebar nav{display:grid;gap:5px}.yc-side-link{display:flex;align-items:center;gap:12px;min-height:48px;padding:10px 12px;border-radius:10px;font-size:14px;color:#665d4e!important}.yc-side-link .yc-icon{width:21px;height:21px;opacity:.8}.yc-side-link:hover{background:#f1ede5}.yc-side-link.is-current{background:#fff;color:var(--yc-ink,#1c1813)!important;box-shadow:0 3px 12px #4f341006}.yc-side-link.is-current:before{content:"";width:3px;height:16px;border-radius:2px;background:var(--yc-red,#f5350c);margin-left:-12px;margin-right:-3px}.yc-side-return{display:flex;align-items:center;justify-content:space-between;min-height:44px;font-size:12px;color:var(--yc-muted,#796c55)!important;padding:0 12px;margin-top:auto}.yc-side-return .yc-icon{width:14px;height:14px}.yc-main{min-width:0;padding:40px 40px 64px;outline:0}.yc-page-head{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:32px}.yc-page-head h1{font:400 28px/1.3 var(--yc-title);letter-spacing:-.6px}.yc-page-head p{margin-top:10px;font-size:13px;color:var(--yc-muted,#796c55);max-width:560px}.yc-view-link{min-height:44px;display:inline-flex;align-items:center;gap:10px;white-space:nowrap;font-size:12px;color:var(--yc-muted,#796c55)!important}.yc-view-link .yc-icon{width:15px;height:15px}
.yc-button{display:inline-flex;align-items:center;justify-content:center;gap:24px;min-height:50px;padding:12px 20px;border-radius:12px;background:linear-gradient(135deg,#ff7a3c,#f5350c)!important;color:#fff!important;font:400 16px/1.5 var(--yc-title)!important;box-shadow:0 5px 14px #f5350c17;text-align:center}.yc-button>span[aria-hidden]{font:400 22px/1 var(--yc-body)}.yc-secondary{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:46px;padding:10px 16px;border-radius:12px;background:var(--yc-sunk,#f5f1e9)!important;color:var(--yc-ink,#1c1813);font-size:13px!important;text-align:center}.yc-secondary .yc-icon{width:16px;height:16px}.yc-full{width:100%}.yc-text-button{min-height:44px;padding:8px 0;font-size:12px!important;color:var(--yc-muted,#796c55)!important;display:inline-flex;align-items:center;justify-content:center;gap:8px}.yc-text-button .yc-icon{width:14px;height:14px}.yc-row-action{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px;font-size:12px;color:var(--yc-muted,#796c55)!important}.yc-row-action .yc-icon{width:16px;height:16px}.yc-paper{background:var(--yc-paper,#fff);border-radius:12px;box-shadow:0 2px 8px #96693705,0 8px 20px #96693704}.yc-section{margin-top:32px}.yc-section-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.yc-section-head h2{font:500 17px/1.4 var(--yc-body)}.yc-type{display:inline-block;padding:3px 8px;border-radius:6px;background:#f4ead8;color:#7a6c52;font-size:11px;line-height:1.5}.yc-state{display:inline-flex;align-items:center;justify-content:center;padding:3px 7px;border-radius:6px;white-space:nowrap;font-size:11px;line-height:1.5;background:#f3ede3;color:#796c55}.yc-state--needs_revision{background:#fff0db;color:#88612c}.yc-state--passed{background:#e5f2e8;color:#3b7050}.yc-state--pending{background:#f0ece5;color:#796c55}
.yc-learning-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(260px,.9fr);gap:44px}.yc-learning-primary,.yc-learning-aside{min-width:0}.yc-learn-hero{padding-top:5px;padding-bottom:4px}.yc-learn-hero h1{font:400 34px/1.25 var(--yc-title);letter-spacing:-.5px}.yc-learn-hero p{font-size:12px;color:var(--yc-muted,#796c55);margin-top:8px}.yc-learn-hero .yc-button{margin-top:16px;min-height:48px}.yc-training-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.yc-training{position:relative;display:flex;flex-direction:column;align-items:flex-start;min-height:150px;padding:18px;border-radius:12px;overflow:hidden;color:#fff!important}.yc-training-number{font-size:24px;line-height:1.2;font-variant-numeric:tabular-nums;margin-bottom:20px}.yc-training strong{margin-top:auto;font:400 20px/1.2 var(--yc-title)}.yc-training small{font-size:11px;line-height:1.5;margin-top:5px;padding-right:20px;opacity:.86}.yc-training--red{background:#f5350c}.yc-training--green{background:#22c55e;color:#06280f!important}.yc-training--blue{background:#2f9bf5;color:#04233f!important}.yc-training--yellow{background:#ffc61a;color:#3a2c00!important}.yc-training-arrow{position:absolute;right:16px;bottom:16px;width:16px;height:16px;opacity:.92}.yc-my-teacher{display:flex;align-items:center;gap:12px;padding:14px 16px;min-height:90px;border-radius:12px;background:linear-gradient(100deg,#241f1a,#14100c);color:#fffdf8!important}.yc-my-teacher>img{width:52px;height:52px;border-radius:50%;border:2px solid #ffffff33;object-fit:cover}.yc-my-teacher>span{min-width:0;display:flex;align-items:flex-start;flex-direction:column;gap:4px;flex:1}.yc-my-teacher small{font:500 9px/1.4 var(--yc-body);background:#22c55e;color:#06280f;padding:1px 6px;border-radius:4px}.yc-my-teacher strong{font:400 17px/1.3 var(--yc-title)}.yc-my-teacher span>span{font-size:11px;color:#d8ccbb}.yc-my-teacher em{font-size:9px;line-height:1.2;letter-spacing:.7px;font-style:normal;background:#f5350c;border-radius:4px;padding:5px 7px;flex:none}.yc-next-task{padding:20px}.yc-next-task .yc-section-head h2{font-size:15px}.yc-next-task .yc-type{margin-top:12px}.yc-next-task h3{font-weight:500;font-size:17px;line-height:1.5;margin-top:12px}.yc-next-task p{font-size:13px;color:var(--yc-muted,#796c55);margin-top:8px}.yc-task-by{font-size:11px;color:var(--yc-muted,#796c55);margin-top:22px;padding-bottom:12px;border-bottom:1px solid #eee9df}.yc-mini-report{display:block;padding:20px;border-radius:12px;color:#fffdf8!important;background:radial-gradient(ellipse 90% 140% at 50% -40%,#77634245 0%,transparent 75%),linear-gradient(135deg,#241f18,#120f0b)}.yc-mini-report .yc-meta,.yc-mini-report .yc-row-action{color:#d3c8b7!important}.yc-mini-report h3{font:400 23px/1.4 var(--yc-title);margin:14px 0 8px}.yc-mini-report p{font-size:12px;color:#d3c8b7}.yc-mini-report p b{font-weight:400;font-size:17px;color:#fffdf8;margin-left:8px}.yc-mini-report .yc-row-action{margin-top:16px}.yc-path-mini{list-style:none;padding:0;margin:0;display:grid;gap:12px}.yc-path-mini li{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--yc-muted,#796c55)}.yc-path-mini li>span{width:24px;height:24px;display:flex;align-items:center;justify-content:center;background:var(--yc-sunk,#f5f1e9);border-radius:50%;font-size:11px;flex:none}
.yc-report-layout{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(280px,1fr);gap:32px}.yc-origin{padding:24px;background:radial-gradient(ellipse 90% 140% at 50% -40%,#77634245 0%,transparent 75%),linear-gradient(135deg,#241f18,#120f0b);border-radius:12px;color:#fffdf8}.yc-origin-top{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:11px;color:#d3c8b7}.yc-origin-top>span{display:flex;align-items:center;gap:7px}.yc-origin-top .yc-icon{width:17px;height:17px}.yc-origin h2{font:400 30px/1.4 var(--yc-title);margin:22px 0}.yc-origin-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px}.yc-origin-bottom p{font-size:12px;color:#d3c8b7}.yc-origin-bottom strong{font-size:20px;font-weight:400;margin-left:8px;color:#fffdf8}.yc-score-label{font-size:9px;display:flex;align-items:center;gap:10px;color:#d3c8b7}.yc-score-label b{font:500 26px/1.1 var(--yc-body);color:#fffdf8}.yc-recheck{display:flex;align-items:center;gap:12px;padding:20px;flex-wrap:wrap}.yc-recheck>.yc-icon{color:#9a815e;width:26px;height:26px}.yc-recheck h3{font-weight:500;font-size:14px}.yc-recheck p{font-size:12px;color:var(--yc-muted,#796c55);margin-top:4px}.yc-recheck .yc-row-action{flex-basis:100%;border-top:1px solid #eee9df;padding-top:6px;margin-top:8px}.yc-change-empty{padding:32px 20px;text-align:center}.yc-change-empty>div{display:flex;justify-content:center;color:#b19c7b;margin-bottom:12px}.yc-change-empty .yc-icon{width:30px;height:30px}.yc-change-empty h3{font-size:15px;font-weight:500}.yc-change-empty p{font-size:12px;line-height:1.9;color:var(--yc-muted,#796c55);margin-top:10px}.yc-ability-panel{padding:24px}.yc-abilities{margin-top:28px;display:grid;gap:24px}.yc-ability>div:first-child{display:flex;align-items:baseline;gap:12px}.yc-ability>div>span{font-size:14px}.yc-ability small{font-size:11px;color:var(--yc-muted,#796c55);flex:1}.yc-ability strong{font-size:17px;font-weight:500}.yc-eq{display:grid;grid-template-columns:repeat(14,minmax(0,1fr));gap:4px;margin-top:9px}.yc-eq i{display:block;height:12px;background:#f0ece5;border-radius:2px}.yc-eq .is-on{background:var(--ability-tone)}.yc-equation{margin-top:24px!important;font-size:11px!important}.yc-report-notes{padding-top:22px;margin-top:22px;border-top:1px solid #eee9df}.yc-report-notes h3{font-size:13px;font-weight:500;margin-bottom:6px}.yc-report-notes h3:not(:first-child){margin-top:20px}.yc-report-notes p{font-size:12px;color:var(--yc-muted,#796c55)}.yc-evidence-note p{font-size:12px;line-height:1.9;color:var(--yc-muted,#796c55)}.yc-history-detail{padding:0 20px}.yc-history-detail summary{display:flex;align-items:center;gap:12px;min-height:76px;cursor:pointer;list-style:none;font-size:13px}.yc-history-detail summary::-webkit-details-marker{display:none}.yc-history-detail summary>span{display:flex;gap:10px;align-items:center;flex:1}.yc-history-detail summary time{font-size:11px;color:var(--yc-muted,#796c55)}.yc-history-detail summary>.yc-icon{width:16px;height:16px}.yc-history-detail[open] summary>.yc-icon{transform:rotate(90deg)}.yc-history-detail>div{border-top:1px solid #eee9df;padding:16px 0;font-size:12px;color:var(--yc-muted,#796c55)}
.yc-task-layout{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(260px,.85fr);gap:32px;align-items:start}.yc-task-requirements{padding:24px}.yc-task-requirements>h3{font-size:18px;font-weight:500;line-height:1.5;margin:22px 0 18px}.yc-task-requirements>p{font-size:13px;line-height:1.8;color:var(--yc-muted,#796c55)}.yc-task-requirements .yc-standard-label{font-size:11px;line-height:1.5;margin:0 0 8px;color:#a78b65}.yc-task-requirements ol{padding:0 0 0 20px;font-size:13px;line-height:1.9;margin:20px 0;color:var(--yc-muted,#796c55)}.yc-task-requirements li{padding-left:2px;margin:8px 0}.yc-task-source{padding-top:16px;border-top:1px solid #eee9df}.yc-record-panel{padding:24px}.yc-recording-empty{display:flex;align-items:center;gap:14px;min-height:94px;background:var(--yc-sunk,#f5f1e9);border-radius:8px;padding:16px}.yc-recording-empty>.yc-icon{width:26px;height:26px;color:#9e8a6c}.yc-recording-empty span{font-size:13px}.yc-recording-empty small{display:block;margin-top:5px;font-size:11px;line-height:1.8;color:var(--yc-muted,#796c55)}.yc-recording{background:var(--yc-sunk,#f5f1e9);padding:12px 16px;border-radius:8px}.yc-recording>.yc-meta{display:block;overflow-wrap:anywhere}.yc-recording audio{display:block;width:100%;height:42px;margin-top:8px}.yc-version-switch{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:76px;margin-top:16px;border-top:1px solid #eae5dc}.yc-version-switch>div{text-align:center}.yc-version-switch>div>span{font-size:12px}.yc-version-switch time{display:block;font-size:10px;color:var(--yc-muted,#796c55);margin-top:2px}.yc-feedback-history{margin-top:18px}.yc-teacher-feedback{display:flex;align-items:flex-start;gap:10px;margin-top:20px}.yc-teacher-square{display:flex;align-items:center;justify-content:center;flex:none;width:29px;height:29px;background:#ffe6dc;color:#b85034;border-radius:8px;font-size:12px}.yc-feedback-content{min-width:0;flex:1}.yc-chat-bubble{background:#faf7f1;border-radius:4px 13px 13px 13px;padding:12px 14px;margin-top:9px!important;font-size:13px;line-height:1.8}.yc-feedback-meta{display:flex;align-items:center;gap:10px;margin-top:12px;flex-wrap:wrap}.yc-feedback-meta time{font-size:10px;color:var(--yc-muted,#796c55)}.yc-replies{margin:18px 0 0 39px}.yc-student-reply{padding-top:12px;border-top:1px solid #eee9df;margin-top:12px}.yc-student-reply p{font-size:13px;line-height:1.8;margin-top:4px;color:#695d4b}.yc-quiet-status{font-size:12px;color:var(--yc-muted,#796c55);padding:15px 0 0}.yc-reply-panel{padding:24px;margin-top:20px}.yc-space form>label,.yc-space .yc-plan-student>label{display:block;font-size:12px;color:var(--yc-muted,#796c55);margin:20px 0 8px}.yc-space .yc-reply-panel form>label:first-child{margin-top:0}.yc-space textarea,.yc-space input:not([type=radio]):not([type=file]){display:block;width:100%;border:1px solid #e1dacd;border-radius:8px;background:#fffdf9;padding:12px;font-size:13px;color:var(--yc-ink,#1c1813);line-height:1.8;resize:vertical}.yc-space input:not([type=radio]):not([type=file]){min-height:46px}.yc-space textarea::placeholder{color:#9f927d}.yc-form-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:12px}.yc-submit-panel{padding:24px}.yc-submit-panel>p{font-size:13px;color:var(--yc-muted,#796c55);line-height:1.9;margin:18px 0}.yc-submit-panel>.yc-button{width:100%;gap:12px}.yc-submit-panel form{padding-top:10px;margin-top:20px;border-top:1px solid #eee9df}.yc-space input[type=file]{width:100%;font-size:11px;color:var(--yc-muted,#796c55)}.yc-space input[type=file]::file-selector-button{border:0;border-radius:7px;background:#f1ebdf;min-height:44px;padding:9px 12px;margin-right:8px;color:#796c55;cursor:pointer}.yc-file-status{font-size:11px;color:var(--yc-muted,#796c55);margin:12px 0 20px!important;overflow-wrap:anywhere}.yc-submit-panel form>.yc-meta{font-size:11px;margin-top:12px}.yc-quiet-copy{padding:20px}.yc-quiet-copy p{font-size:13px;line-height:1.9;color:var(--yc-muted,#796c55)}
.yc-teacher-identity{display:flex;align-items:center;gap:14px;margin-bottom:28px}.yc-teacher-identity>img{width:52px;height:52px;object-fit:cover;border-radius:50%}.yc-teacher-identity h1{font:400 25px/1.3 var(--yc-title)}.yc-teacher-identity span{font-size:12px;color:var(--yc-muted,#796c55);display:block;margin-top:5px}.yc-teacher-layout{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(280px,.9fr);gap:40px}.yc-teacher-focus{padding:24px;background:radial-gradient(ellipse 90% 140% at 50% -40%,#77634245 0%,transparent 75%),linear-gradient(135deg,#241f18,#120f0b);color:#fffdf8;border-radius:12px}.yc-teacher-focus>div{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12px;color:#d3c8b7}.yc-teacher-focus h2{font-size:24px;line-height:1.4;font-weight:500;margin:20px 0 8px}.yc-teacher-focus p{font-size:13px;color:#d3c8b7;margin-bottom:24px}.yc-teacher-focus .yc-button{width:100%;justify-content:space-between}.yc-teacher-tools{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.yc-teacher-tools a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;min-height:88px;font-size:12px}.yc-teacher-tools .yc-icon{width:28px;height:28px}.yc-student-row{display:flex;align-items:center;gap:12px;width:100%;min-height:86px;padding:16px!important;text-align:left}.yc-student-row+.yc-student-row{border-top:1px solid #eee9df}.yc-student-row>.yc-icon{width:15px;height:15px}.yc-student-row>span:nth-child(2){flex:1;min-width:0}.yc-student-row strong{font-size:14px;font-weight:400;display:block}.yc-student-row small{display:block;font-size:11px;color:var(--yc-muted,#796c55);margin-top:5px}.yc-teacher-path{padding:24px}.yc-teacher-path .yc-path-mini{margin-top:24px;gap:18px}.yc-teacher-path .yc-row-action{padding-top:20px;margin-top:20px;border-top:1px solid #eee9df}.yc-follow-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px!important;min-height:80px;width:100%;text-align:left;font-size:14px}.yc-follow-row small{display:block;font-size:12px;color:var(--yc-muted,#796c55);margin-top:4px}.yc-follow-row>.yc-icon{width:16px;height:16px}.yc-empty-inline{font-size:13px;padding:20px;color:var(--yc-muted,#796c55)}
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.yc-toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);max-width:min(560px,calc(100vw - 32px));padding:12px 20px;border-radius:10px;background:#1c1813;color:#fffdf8;font-size:13px;text-align:center;box-shadow:0 8px 28px #1c181326;z-index:1000}
@media(min-width:1450px){.yc-review-layout{grid-template-columns:180px minmax(0,1.2fr) minmax(260px,.8fr)}}
@media(max-width:1250px){.yc-workspace{grid-template-columns:188px minmax(0,1fr)}.yc-main{padding:32px 28px 60px}.yc-sidebar{padding-left:16px;padding-right:12px}.yc-learning-grid{gap:28px}.yc-review-layout{grid-template-columns:150px minmax(0,1fr);gap:20px}.yc-grading-panel{grid-column:2;position:static}.yc-review-queue{grid-row:span 2}.yc-grading-panel textarea{min-height:120px}.yc-grading-panel fieldset{margin:12px 0}.yc-aesthetics-grid{gap:12px}.yc-song-note{padding:20px}}
@media(max-width:1000px){.yc-learning-grid,.yc-task-layout,.yc-report-layout,.yc-teacher-layout,.yc-practice-layout,.yc-plan-layout{grid-template-columns:minmax(0,1fr)}.yc-learning-aside{display:grid;grid-template-columns:1fr 1fr;gap:24px}.yc-learning-aside>.yc-section{margin-top:0}.yc-learning-aside>.yc-section:last-child{grid-column:span 2}.yc-training{min-height:145px}.yc-next-task{grid-row:span 2}.yc-learning-grid{gap:32px}.yc-teacher-layout{gap:28px}.yc-teacher-layout>aside{display:grid;grid-template-columns:1fr 1fr;gap:24px}.yc-teacher-layout>aside>.yc-section{margin:0}.yc-teacher-layout>aside>.yc-section:last-child{grid-column:span 2}.yc-task-layout>aside{display:grid;grid-template-columns:minmax(0,1fr);gap:0}.yc-origin-top{flex-wrap:wrap}.yc-report-layout{gap:32px}.yc-report-layout>aside{display:grid;grid-template-columns:minmax(0,1fr);gap:0}.yc-practice-photo{height:250px}.yc-aesthetics-grid{grid-template-columns:1fr}.yc-song-note{display:grid;grid-template-columns:1fr 1fr;column-gap:20px}.yc-song-note h3{margin:12px 0 0;grid-column:1}.yc-song-note>.yc-meta{grid-column:1}.yc-song-note h4{grid-column:2;grid-row:1/3;margin-top:0;align-self:end}.yc-song-note p{grid-column:2;grid-row:3/5;margin:0}.yc-song-note .yc-row-action{grid-column:1/-1;margin-top:16px;border-top:1px solid #eee9df}.yc-aesthetics-path{flex-direction:column;align-items:flex-start;gap:20px}}
@media(max-width:760px){.yc-product-nav{padding:12px 20px;gap:12px}.yc-product-label{gap:10px}.yc-product-label>span:last-child{display:none}.yc-role-switch a{padding:0 12px;font-size:11px;min-height:44px}.yc-workspace{display:block}.yc-sidebar{display:block;padding:12px 20px 0;border-right:0;border-bottom:1px solid #eae5dc}.yc-side-identity,.yc-side-return{display:none!important}.yc-sidebar nav{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;padding-bottom:10px}.yc-sidebar nav::-webkit-scrollbar{display:none}.yc-side-link{min-height:44px;flex:none;white-space:nowrap;font-size:12px;padding:10px 12px;gap:7px}.yc-side-link .yc-icon{width:16px;height:16px}.yc-side-link.is-current:before{display:none}.yc-main{padding:28px 20px 48px}.yc-page-head{margin-bottom:26px;display:block}.yc-page-head h1{font-size:26px}.yc-page-head p{font-size:12px;margin-top:8px}.yc-page-head .yc-view-link{margin-top:8px}.yc-learn-hero h1{font-size:32px}.yc-learning-grid{display:block}.yc-training{min-height:132px;padding:16px}.yc-training strong{font-size:18px}.yc-training-number{font-size:22px;margin-bottom:16px}.yc-learning-aside{display:block;margin-top:32px}.yc-learning-aside>.yc-section{margin-top:32px}.yc-next-task{padding:20px}.yc-teacher-layout>aside{display:block}.yc-teacher-layout>aside>.yc-section{margin-top:32px}.yc-section-head h2{font-size:17px}.yc-teacher-identity h1{font-size:22px}.yc-teacher-focus{padding:20px}.yc-teacher-focus h2{font-size:21px}.yc-teacher-focus p{font-size:12px}.yc-task-requirements,.yc-record-panel,.yc-reply-panel,.yc-submit-panel,.yc-ability-panel{padding:20px}.yc-task-requirements>h3{font-size:17px}.yc-task-layout,.yc-report-layout,.yc-practice-layout,.yc-plan-layout{gap:28px}.yc-submit-panel>p{font-size:12px}.yc-task-layout>aside>.yc-section{margin-top:28px}.yc-chat-bubble{font-size:12px}.yc-form-bottom{align-items:flex-start}.yc-form-bottom>.yc-meta{font-size:10px;max-width:115px;padding-top:10px}.yc-origin{padding:20px}.yc-origin h2{font-size:28px;margin:24px 0}.yc-origin-bottom{align-items:flex-end}.yc-origin-bottom p{font-size:11px}.yc-origin-bottom strong{font-size:18px;display:block;margin-left:0;margin-top:5px}.yc-score-label{display:block;font-size:9px}.yc-score-label b{font-size:27px;display:block;margin-top:5px}.yc-origin-top time{font-size:10px}.yc-ability-panel{padding:20px}.yc-teacher-path{padding:20px}.yc-teacher-tools a{font-size:11px}.yc-student-row{gap:10px;padding:16px 14px!important}.yc-student-row small{font-size:10px}.yc-review-layout{display:block}.yc-review-queue>h2,.yc-review-queue>p{display:none}.yc-review-queue nav{display:flex;gap:10px;margin:0 0 24px;overflow-x:auto}.yc-queue-item{min-width:156px;max-width:200px;flex:1;min-height:86px;background:#f1ede4!important}.yc-queue-item.is-current{outline:1px solid #a38e6c;outline-offset:-1px}.yc-review-body .yc-task-requirements{padding:20px}.yc-grading-panel{margin-top:28px;padding:20px}.yc-grading-panel fieldset{margin-top:20px}.yc-grading-panel textarea{min-height:150px}.yc-form-error{font-size:11px}.yc-practice-focus{padding:20px}.yc-practice-focus h2{font-size:25px}.yc-practice-photo{height:210px}.yc-tool-list{padding:20px}.yc-aesthetics-hero{padding:24px}.yc-aesthetics-hero h2{font-size:26px}.yc-aesthetics-grid{gap:16px}.yc-song-note{display:block;padding:22px}.yc-song-note h3{margin-top:22px}.yc-song-note h4{margin-top:24px}.yc-song-note p{margin-top:10px}.yc-song-note .yc-row-action{margin-top:18px;padding-top:6px}.yc-aesthetics-path h3{font-size:16px}.yc-aesthetics-path p{font-size:12px}.yc-plan-layout>.yc-paper{padding:20px}.yc-toast{font-size:12px;bottom:20px;bottom:calc(20px + env(safe-area-inset-bottom));width:max-content;max-width:calc(100vw - 32px)}}
@media(max-width:389px){.yc-main{padding-left:16px;padding-right:16px}.yc-product-nav{padding-left:16px;padding-right:16px}.yc-sidebar{padding-left:16px;padding-right:16px}.yc-my-teacher{gap:10px;padding:14px}.yc-my-teacher strong{font-size:16px}.yc-my-teacher>img{width:48px;height:48px}.yc-my-teacher em{padding:5px;font-size:8px}.yc-training small{font-size:10px}.yc-training strong{font-size:17px}.yc-training{min-height:124px}.yc-section-head>.yc-meta{font-size:11px}.yc-page-head h1{font-size:24px}.yc-history-detail{padding:0 16px}.yc-history-detail summary{gap:8px;font-size:12px}.yc-history-detail summary time{font-size:10px}.yc-state{font-size:10px}.yc-task-requirements,.yc-record-panel,.yc-reply-panel,.yc-submit-panel{padding:18px}}
@media(prefers-reduced-motion:no-preference){.yc-space button,.yc-space a{transition:opacity .14s,transform .14s}.yc-space .yc-button:active,.yc-space .yc-training:active{transform:scale(.98)}.yc-space a:hover,.yc-space button:hover{opacity:.9}}
.yc-my-teacher{width:100%;text-align:left}.yc-teacher-dialog{width:min(420px,calc(100vw - 32px));max-height:calc(100dvh - 48px);overflow-y:auto;overscroll-behavior:contain;border:0;border-radius:16px;padding:24px;background:var(--yc-paper,#fff);color:var(--yc-ink,#1c1813);box-shadow:0 20px 80px #1c18133b}.yc-teacher-dialog::backdrop{background:#1c181366}.yc-dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.yc-dialog-heading h2{font:500 17px/1.5 var(--yc-body)}.yc-dialog-heading button{width:44px;height:44px;font-size:28px;font-weight:300;margin-right:-12px}.yc-dialog-identity{display:flex;align-items:center;gap:12px;margin:20px 0}.yc-dialog-identity img{width:52px;height:52px;object-fit:cover;border-radius:50%}.yc-dialog-identity strong{font-size:15px;font-weight:500;display:block}.yc-dialog-identity span{font-size:12px;color:var(--yc-muted,#796c55)}.yc-teacher-dialog>p{font-size:13px;color:var(--yc-muted,#796c55);margin-bottom:28px}
.yc-product-nav{position:sticky;top:0;z-index:35}.yc-space-logo{display:inline-flex;align-items:center;min-height:44px;flex:none}.yc-space-logo img{display:block;width:auto;height:34px;object-fit:contain}@media(max-width:760px){.yc-space-logo img{height:31px}}
/* The teacher video entry is a semantic button; retain its confirmed dark card. */
.yc-space button.yc-my-teacher{background:linear-gradient(100deg,#241f1a,#14100c);color:#fffdf8}