:root{--blue:#254fe5;--blue-dark:#1939a8;--ink:#202637;--muted:#697184;--line:#e5e8ef;--bg:#f7f8fb;--pale:#edf1ff;--green:#137254;--radius:16px;font-family:Inter,"Segoe UI",Arial,sans-serif;color:var(--ink);font-size:16px;font-synthesis:none}*{box-sizing:border-box}body{margin:0;background:var(--bg)}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}button:disabled{cursor:not-allowed;opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #83a4ff;outline-offset:3px}button{color:var(--ink)}.skip{position:fixed;left:12px;top:-60px;z-index:100;background:#fff;padding:12px}.skip:focus{top:12px}.prototype-bar{background:#192744;color:#e8edff;padding:9px 28px;display:flex;justify-content:space-between;gap:14px;font-size:12px;line-height:1.6}.prototype-bar b{font-size:10px;letter-spacing:1px;background:#344463;padding:3px 7px;border-radius:4px;margin-right:10px}.topbar{height:82px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 32px;gap:28px;position:sticky;top:0;z-index:10}.brand{display:flex;align-items:center;font-size:27px;font-weight:750;letter-spacing:-1px;white-space:nowrap}.brand-mark{background:var(--blue);color:#fff;display:grid;place-items:center;width:36px;height:38px;border-radius:9px;font-size:27px;line-height:1;margin-right:10px;font-weight:850}.brand-dot{color:var(--blue)}.workspace-label{border-left:1px solid var(--line);padding-left:28px;font-size:11px;letter-spacing:1.8px;color:var(--muted)}.mode-switch{margin-left:auto;display:flex;background:#f3f4f7;border-radius:9px;padding:4px;font-size:14px;font-weight:600}.mode-switch a{padding:9px 16px;border-radius:7px}.mode-switch a.active{background:white;box-shadow:0 2px 5px #1d2a4010;color:var(--blue)}.avatar{height:38px;width:38px;border-radius:50%;display:grid;place-items:center;flex-shrink:0;background:#ebe5fb;color:#6e4695;font-size:13px;font-weight:700}.app-shell{display:flex;min-height:calc(100vh - 121px)}.sidebar{width:242px;flex-shrink:0;background:#fff;border-right:1px solid var(--line);padding:28px 18px;display:flex;flex-direction:column;position:sticky;top:82px;height:calc(100vh - 82px)}.space-card{display:flex;align-items:center;gap:10px;margin:0 4px 38px}.mini-mark{width:34px;height:34px;display:grid;place-items:center;border-radius:8px;background:#eaf0ff;color:var(--blue);font-weight:800}.space-card strong,.side-bottom strong{display:block;font-size:14px}.space-card small,.side-bottom small{display:block;color:var(--muted);font-size:12px;margin-top:4px}.side-label{font-size:10px;color:#9095a3;letter-spacing:1.4px;font-weight:700;margin:0 14px 14px}#side-nav{display:grid;gap:6px}.nav-item{display:flex;align-items:center;gap:12px;font-size:14px;padding:13px 14px;border-radius:9px;color:#646c7f;line-height:1.4}.nav-item.active{background:var(--pale);color:var(--blue);font-weight:650}.nav-count{margin-left:auto;font-size:12px}.icon{width:20px;height:20px;display:inline-block;vertical-align:middle;flex-shrink:0}.side-bottom{margin-top:auto;border-top:1px solid var(--line);padding:22px 8px 8px;display:flex;align-items:center;gap:10px}main{padding:36px 42px 54px;min-width:0;flex:1;max-width:1600px;margin:auto;align-self:flex-start}.eyebrow{color:var(--muted);font-size:11px;letter-spacing:1.6px;font-weight:700;margin:0 0 10px}.page-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:27px}h1{font-size:30px;letter-spacing:-.9px;font-weight:700;margin:0 0 9px;line-height:1.25}h2{margin:0;font-size:20px;letter-spacing:-.4px;line-height:1.4}h3{line-height:1.5}p{line-height:1.65}.subtext{color:var(--muted);font-size:14px;margin:0;line-height:1.6}.section-heading{display:flex;justify-content:space-between;align-items:center;margin:30px 0 18px}.text-link{color:var(--blue);font-size:14px;font-weight:600}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--line);border-radius:9px;padding:11px 17px;font-size:14px;font-weight:600;background:#fff;line-height:1.5;min-height:43px}.btn.primary{background:var(--blue);color:#fff;border-color:var(--blue)}.btn.primary:hover{background:var(--blue-dark)}.btn:hover{border-color:#b6c0d3}.btn.danger{background:#b83c37;border-color:#b83c37;color:white}.btn.small{padding:7px 11px;min-height:36px}.btn.ghost{background:transparent}.continue-panel{border:1px solid #dae2fb;display:grid;grid-template-columns:1fr 240px;border-radius:var(--radius);overflow:hidden;background:#fff}.continue-content{padding:27px 30px;position:relative}.pill{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:5px 9px;border-radius:5px;line-height:1.3;background:var(--pale);color:var(--blue)}.pill.green{background:#eaf5ef;color:var(--green)}.pill.gray{color:#697184;background:#f0f2f5}.pill.amber{color:#946414;background:#fff5da}.continue-content h2{font-size:23px;margin:12px 0 6px;max-width:560px}.continue-bottom{display:flex;align-items:center;gap:24px;margin-top:22px}.progress-stack{flex:1;max-width:260px}.progress-text{display:flex;justify-content:space-between;gap:12px;font-size:12px;color:var(--muted);margin-bottom:8px}progress{appearance:none;width:100%;height:5px;display:block;border:0;border-radius:10px;overflow:hidden;background:#e9edf4}progress::-webkit-progress-bar{background:#e9edf4}progress::-webkit-progress-value{background:var(--blue);border-radius:10px}progress::-moz-progress-bar{background:var(--blue);border-radius:10px}.course-art{background:#edf1ff;padding:24px;min-height:152px;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}.course-art .art-kicker{font-size:10px;letter-spacing:1.8px;font-weight:750}.course-art .art-title{font-size:24px;font-weight:700;line-height:1.16;letter-spacing:-.6px;max-width:240px}.course-art .art-footer{font-size:10px;letter-spacing:2px;margin-top:18px;display:flex;justify-content:space-between;align-items:center}.course-art.navy{background:#202f53;color:#fff}.course-art.blue{background:#e9efff;color:#214cb7}.course-art.mint{background:#e4f2ef;color:#25695c}.course-art.sand{background:#f5eedf;color:#88652d}.continue-panel .course-art{padding:30px;background:#244fe4;color:white;justify-content:space-between}.continue-panel .art-title{font-size:33px;max-width:160px}.course-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.course-card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .2s,transform .2s}.course-card:hover{box-shadow:0 10px 30px #29374e0b;transform:translateY(-2px)}.course-card .course-art{min-height:150px}.card-body{padding:20px;display:flex;flex-direction:column;flex:1}.card-meta{display:flex;justify-content:space-between;gap:8px;align-items:center;font-size:12px;color:var(--muted)}.card-body h3{font-size:17px;margin:14px 0 10px;font-weight:650;letter-spacing:-.25px}.card-body p{font-size:13px;color:var(--muted);margin:0 0 18px}.card-bottom{margin-top:auto;display:flex;justify-content:space-between;align-items:center;padding-top:18px;border-top:1px solid #eff1f6;font-size:13px;color:var(--muted)}.toolbar{display:flex;justify-content:space-between;align-items:center;gap:15px;flex-wrap:wrap;margin:24px 0}.tabs{display:flex;gap:20px;border-bottom:1px solid var(--line)}.tab{padding:12px 0;border:0;border-bottom:2px solid transparent;color:var(--muted);background:transparent;font-size:14px;white-space:nowrap}.tab.active{border-color:var(--blue);color:var(--blue);font-weight:600}.tab span{background:#eef0f5;padding:2px 6px;border-radius:4px;font-size:11px;margin-left:5px}.search{display:flex;align-items:center;gap:9px;border:1px solid var(--line);border-radius:8px;background:white;padding:10px 12px;color:var(--muted);min-width:230px}.search input{border:0;outline:0;min-width:0;width:100%;font-size:14px;background:transparent;color:var(--ink)}.search:focus-within{outline:2px solid #83a4ff;outline-offset:2px}.note{font-size:12px;color:var(--muted);margin-top:25px;line-height:1.6}.empty{padding:45px 20px;text-align:center;background:white;border:1px dashed #ced5e1;border-radius:12px;grid-column:1/-1}.empty h3{margin:12px 0 8px}.empty p{color:var(--muted);font-size:14px}.breadcrumb{display:flex;gap:9px;align-items:center;font-size:13px;color:var(--muted);margin-bottom:25px;flex-wrap:wrap}.breadcrumb a{color:var(--blue)}.learn-layout{display:grid;grid-template-columns:270px minmax(0,1fr);gap:26px}.curriculum{background:#fff;border:1px solid var(--line);border-radius:12px;align-self:start;overflow:hidden}.curriculum-head{padding:20px;border-bottom:1px solid var(--line)}.curriculum-head h2{font-size:16px;margin-bottom:15px}.curriculum details{border-bottom:1px solid var(--line)}.curriculum summary{font-size:14px;font-weight:600;padding:18px;cursor:pointer;line-height:1.5}.lesson-button{width:100%;border:0;background:transparent;display:flex;gap:10px;text-align:left;padding:13px 16px;font-size:13px;line-height:1.6;color:#626b80}.lesson-button .lesson-number{border:1px solid #dde2ec;border-radius:50%;height:22px;width:22px;flex-shrink:0;text-align:center;font-size:11px;background:#fff}.lesson-button.active{background:var(--pale);color:var(--blue);font-weight:600;border-left:3px solid var(--blue);padding-left:13px}.lesson-button.done .lesson-number{color:var(--green);background:#e8f5ef;border-color:#bcdccd}.lesson-main{min-width:0}.lesson-main h1{font-size:26px;margin:11px 0 22px}.video-shell{aspect-ratio:16/9;background:#152443;border-radius:12px;overflow:hidden;display:grid;place-items:center;position:relative;color:white}.video-cover{display:flex;flex-direction:column;align-items:center;text-align:center;padding:20px;gap:12px}.video-cover p{font-size:14px;color:#b9c7e4;margin:0}.play-button{width:62px;height:62px;border:1px solid #ffffff4d;border-radius:50%;background:#ffffff1a;color:#fff;display:grid;place-items:center}.play-button .icon{height:26px;width:26px}.video-shell iframe{width:100%;height:100%;border:0}.video-caption{display:flex;justify-content:space-between;gap:12px;align-items:center;margin:18px 0 25px}.video-caption .btn{white-space:nowrap}.lesson-note{background:#fff;border:1px solid var(--line);border-radius:12px;padding:25px;margin-top:22px}.lesson-note h2{font-size:17px;margin-bottom:10px}.lesson-note p{font-size:14px;color:var(--muted);margin:0}.lesson-nav{display:flex;justify-content:space-between;margin-top:25px;gap:12px}.mobile-outline{display:none}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:24px 0}.stat{background:white;border:1px solid var(--line);border-radius:12px;padding:20px;display:flex;justify-content:space-between;align-items:flex-start}.stat p{font-size:13px;margin:0;color:var(--muted)}.stat strong{display:block;font-size:28px;letter-spacing:-.7px;margin-top:9px}.stat .stat-icon{padding:9px;background:var(--pale);border-radius:9px;color:var(--blue)}.admin-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:22px;align-items:start}.table-panel{background:white;border:1px solid var(--line);border-radius:12px;overflow:hidden}.table-title{padding:19px 20px;border-bottom:1px solid var(--line);font-size:15px;font-weight:650}.table-scroll{overflow:auto}table{width:100%;border-collapse:collapse;text-align:left;font-size:13px}th{font-size:11px;letter-spacing:.4px;font-weight:600;color:var(--muted);background:#fafbfc;padding:14px 18px;white-space:nowrap}td{padding:18px;border-top:1px solid #eff1f6;vertical-align:middle}tr.selected{background:#f0f4ff}.person{display:flex;align-items:center;gap:10px}.person strong{font-size:14px;font-weight:600;display:block}.person small{font-size:11px;color:var(--muted);display:block;margin-top:4px}.person .avatar{width:33px;height:33px;font-size:11px}.table-footer{padding:15px 20px;color:var(--muted);font-size:12px;border-top:1px solid var(--line)}.detail-panel{background:white;border:1px solid var(--line);border-radius:12px;overflow:hidden}.detail-head{padding:23px;border-bottom:1px solid var(--line)}.detail-head .avatar{width:49px;height:49px;font-size:16px;margin-bottom:13px}.detail-head h2{font-size:19px}.detail-head small{color:var(--muted);font-size:12px}.detail-content{padding:20px}.detail-content h3{font-size:13px;margin:0 0 15px}.grant{margin-bottom:17px;padding-bottom:17px;border-bottom:1px solid var(--line)}.grant strong{font-size:13px;line-height:1.5;display:block;margin-bottom:7px}.grant small{font-size:11px;color:var(--muted);display:block;margin-top:6px;line-height:1.6}.grant button{margin-top:8px;background:none;border:0;color:#a24239;padding:2px 0;font-size:12px}.full{width:100%}.history-item{font-size:12px;color:var(--muted);padding:10px 0;border-bottom:1px solid var(--line);line-height:1.6}.history-item strong{color:var(--ink);font-weight:600}.notice{background:#edf2ff;color:#415780;border-radius:9px;padding:13px 16px;font-size:13px;line-height:1.6;margin:18px 0}.notice.amber{background:#fff7e5;color:#866726}dialog{border:0;border-radius:16px;padding:28px;width:calc(100% - 32px);max-width:460px;box-shadow:0 25px 100px #10244340;color:var(--ink)}dialog::backdrop{background:#16223e66;backdrop-filter:blur(3px)}dialog h2{font-size:22px;margin-bottom:12px}dialog p{font-size:14px;color:var(--muted)}dialog label{display:block;font-size:14px;font-weight:600;margin:20px 0 8px}dialog select,dialog input{border:1px solid #d8dde8;border-radius:8px;padding:12px;width:100%;background:#fff;font-size:14px}dialog .actions{display:flex;justify-content:flex-end;gap:10px;margin-top:25px}.dialog-error{color:#ae3932;font-size:13px;min-height:20px;margin-top:10px}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%) translateY(120px);padding:14px 22px;background:#20334a;color:#fff;border-radius:10px;box-shadow:0 10px 40px #152f3333;z-index:100;transition:transform .2s;font-size:14px;max-width:calc(100% - 24px)}#toast.show{transform:translateX(-50%) translateY(0)}.review-card{background:white;border:1px solid var(--line);padding:24px;border-radius:14px;margin-bottom:16px}.review-card h3{font-size:16px;margin:0 0 8px}.review-card p{font-size:14px;color:var(--muted)}.step-row{display:flex;align-items:center;gap:15px;margin:22px 0;color:var(--muted);font-size:13px;flex-wrap:wrap}.step-row span{display:flex;align-items:center;gap:7px}.step-row b{background:#e9edfb;color:var(--blue);border-radius:50%;display:grid;place-items:center;width:25px;height:25px}.form-hint{font-size:12px;color:var(--muted);line-height:1.6}.text-button{border:0;background:none;color:var(--blue);font-size:13px;font-weight:600;padding:0}.admin-layout .btn.small{white-space:nowrap}
@media(min-width:1450px){main{padding:40px 52px}.course-grid{gap:24px}.course-art .art-title{font-size:28px}.admin-layout{grid-template-columns:minmax(0,1fr) 330px}}
@media(max-width:1150px){.sidebar{width:205px;padding:24px 12px}main{padding:28px 25px}.workspace-label{display:none}.course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.admin-layout{grid-template-columns:1fr}.detail-panel{display:grid;grid-template-columns:230px 1fr}.detail-head{border-right:1px solid var(--line);border-bottom:0}.learn-layout{grid-template-columns:230px 1fr;gap:18px}.continue-panel{grid-template-columns:1fr 190px}.continue-content{padding:24px}}
@media(max-width:800px){.sidebar{display:none}.topbar{height:70px;padding:0 22px}.top-avatar{display:none}.app-shell{min-height:calc(100vh - 107px)}main{padding:28px 22px}.learn-layout{grid-template-columns:220px minmax(0,1fr)}.prototype-bar{padding:8px 22px}.prototype-bar>span:last-child{display:none}.topbar .brand{font-size:24px}.mode-switch{font-size:13px}.continue-panel{grid-template-columns:1fr 190px}h1{font-size:27px}.curriculum summary{padding:14px}.lesson-main h1{font-size:22px}.video-caption{align-items:flex-start;flex-direction:column}}
@media(max-width:600px){main{padding:25px 17px}.topbar{padding:0 17px;gap:10px}.brand{font-size:22px!important}.brand-mark{width:29px;height:32px;font-size:23px;margin-right:6px}.mode-switch a{padding:8px 10px}.prototype-bar{padding:7px 17px;font-size:11px}.prototype-bar b{font-size:9px;margin-right:5px}.page-heading{margin-bottom:21px;gap:10px}h1{font-size:25px;letter-spacing:-.6px}.subtext{font-size:13px}.continue-panel{grid-template-columns:1fr}.continue-panel>.course-art{display:none}.continue-content{padding:22px}.continue-content h2{font-size:21px}.continue-bottom{align-items:flex-start;flex-direction:column;gap:19px}.progress-stack{width:100%;max-width:none}.continue-bottom .btn{width:100%}.course-grid{grid-template-columns:1fr}.course-card .course-art{min-height:160px}.course-art .art-title{font-size:28px;max-width:260px}.toolbar{align-items:stretch;gap:16px}.tabs{width:100%;gap:22px}.search{width:100%;min-width:0}.section-heading h2{font-size:18px}.learn-layout{display:flex;flex-direction:column}.curriculum{width:100%;display:none}.curriculum.open{display:block}.lesson-main{width:100%}.mobile-outline{display:flex;margin-bottom:18px}.lesson-main h1{font-size:23px}.video-caption{flex-direction:column;align-items:stretch}.video-caption .btn{width:100%}.video-cover p{font-size:12px}.video-cover strong{font-size:14px}.play-button{width:46px;height:46px}.video-cover{gap:8px}.lesson-note{padding:20px}.stats{gap:9px}.stat{padding:14px 11px}.stat .stat-icon{display:none}.stat p{font-size:11px;line-height:1.5}.stat strong{font-size:25px}.detail-panel{display:block}.detail-head{border-right:0;border-bottom:1px solid var(--line)}.table-scroll{max-width:100%}td,th{padding:14px 12px}.person small{max-width:100px;overflow-wrap:anywhere}.page-heading .btn{padding:9px 12px;font-size:12px}.admin-title-row{flex-direction:column}.note{font-size:12px}.breadcrumb{font-size:12px}.lesson-nav .btn{font-size:13px;padding:10px 14px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
/* Empower identity and accessible application forms */
:root{--blue:#bf303c;--blue-dark:#982632;--pale:#fbebed;--ink:#302c2e;--muted:#746f70;--line:#e9e3e4;--bg:#faf8f8}
.real-logo{display:block;width:210px;height:auto;max-height:78px;object-fit:contain}.topbar{height:96px}.sidebar{top:96px;height:calc(100vh - 96px)}.app-shell{min-height:calc(100vh - 142px)}#account-nav{margin-left:auto;display:flex;align-items:center;gap:15px}.account-label{font-size:13px;max-width:180px;overflow-wrap:anywhere}.app-footer{padding:18px;text-align:center;font-size:10px;letter-spacing:1.2px;color:var(--muted);border-top:1px solid var(--line);background:white}.mini-mark{background:var(--pale)}.course-art.navy{background:linear-gradient(125deg,#8e2230,#bf303c);color:white}.course-art.mint{background:linear-gradient(125deg,#eee8e5,#f7edeb);color:#7a3139}.course-art .art-title{font-size:23px;max-width:100%;line-height:1.25}.course-art{min-height:185px}.course-art .art-kicker{font-size:9px;letter-spacing:1.5px}.notice{background:var(--pale);color:#85313d}.step-row b{background:var(--pale)}.video-cover{background:linear-gradient(130deg,#3a292e,#752432)}.continue-panel{border-color:var(--line)}.auth-card{width:100%;max-width:490px;background:#fff;padding:35px;border:1px solid var(--line);border-radius:16px;margin:20px auto}.auth-logo{width:100%;max-width:300px;display:block;margin:0 auto 32px}.auth-card h1{font-size:26px}.auth-switch{font-size:13px;text-align:center;color:var(--blue);margin-top:24px}form label{display:block;margin:18px 0 7px;font-size:14px;font-weight:600}input,textarea,select{font:inherit;border:1px solid #d8cccf;border-radius:8px;padding:11px;background:#fff;color:var(--ink);max-width:100%}form>input,form>textarea{width:100%}textarea{resize:vertical}.toolbar select{flex:1;min-width:0;max-width:700px}.search input{width:100%}.toolbar form{margin:0}.toolbar label{margin:0}.check-label{display:flex;gap:10px;align-items:flex-start;line-height:1.6!important}.check-label input{width:18px;height:18px;margin:3px 0 0;flex-shrink:0;accent-color:var(--blue)}.block{display:block;margin-top:6px;font-size:12px;color:var(--muted);overflow-wrap:anywhere}.long-text{white-space:pre-line;overflow-wrap:anywhere}.pagination{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px;font-size:13px}.source-details{margin:25px 0;font-size:13px}.batch-item{padding:18px 0;border-bottom:1px solid var(--line);overflow-wrap:anywhere}.batch-item p{font-size:13px;color:var(--muted)}pre{max-width:100%;overflow:auto;font-size:12px;line-height:1.6;padding:15px;background:var(--bg);border-radius:8px}.stats .stat strong{font-size:23px}.stats{flex-wrap:wrap}.stat{min-width:0}.empty{grid-column:1/-1}.lesson-button{font-size:13px}.lesson-button.active{background:var(--pale);color:var(--blue)}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,textarea:focus-visible{outline:3px solid #d67d87;outline-offset:3px}.toolbar{flex-wrap:wrap}
@media(max-width:800px){.topbar{height:80px;padding:8px 18px}.real-logo{width:165px;max-height:64px}.app-shell{flex-direction:column;min-height:calc(100vh - 150px)}.sidebar{display:block;width:100%;position:static;height:auto;padding:9px 12px;border-right:0;border-bottom:1px solid var(--line)}.sidebar .space-card,.side-bottom{display:none}#side-nav{display:flex;overflow:auto;gap:4px}.nav-item{white-space:nowrap;font-size:12px;padding:10px}.account-label{display:none}main{width:100%;margin:0}.auth-card{margin:0 auto}.stats{grid-template-columns:1fr}.stats .stat strong{font-size:23px}}
@media(max-width:600px){.real-logo{width:150px}.topbar .btn{font-size:12px;padding:9px 12px}.auth-card{padding:24px 18px}.toolbar>select{width:100%;flex:auto}.course-art .art-title{font-size:25px}.page-heading{flex-wrap:wrap}.learn-layout{width:100%}}
.video-shell{background:#452d34}.video-cover{width:100%;height:100%;justify-content:center}.video-cover p{color:#efcdd3}.play-button{background:#ffffff20;border:1px solid #ffffff60}.play-button:hover{background:#ffffff35}form label>input:not([type=checkbox]),form label>textarea,form label>select{display:block;width:100%;margin-top:7px}

/* Cộng đồng theo khóa */
[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
textarea:focus-visible{outline:3px solid #83a4ff;outline-offset:3px}
.course-tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin:6px 0 24px;overflow-x:auto}
.course-tabs a{padding:11px 16px;font-size:14px;font-weight:600;color:var(--muted);border-bottom:3px solid transparent;white-space:nowrap}
.course-tabs a.active{color:var(--blue);border-bottom-color:var(--blue)}
.community{max-width:780px}
.community-head{margin-bottom:18px}
.community-head h1{margin:6px 0 6px}
.composer,.post{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;margin-bottom:16px}
.composer label{display:block;font-size:13px;font-weight:600;margin:12px 0 6px}
.composer label:first-child{margin-top:0}
.composer input,.composer textarea,.comment-form textarea,#modal textarea{width:100%;font:inherit;color:var(--ink);background:#fff;border:1px solid #cfd5e3;border-radius:10px;padding:11px 12px;line-height:1.5}
.composer textarea,#modal textarea,.comment-form textarea{resize:vertical;min-height:84px}
.composer-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:12px}
.post.pinned{border-color:#f0c36d;background:#fffdf7}
.post.review,.comment.review{border-style:dashed;background:#fafafb}
.post-head{display:flex;align-items:center;gap:12px;margin-bottom:10px;flex-wrap:wrap}
.avatar-letter{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;flex-shrink:0;background:var(--pale);color:var(--blue-dark);font-weight:700}
.post-who{flex:1;min-width:140px}
.post-who strong{margin-right:6px}
.post-who small{display:block;color:var(--muted);font-size:12px;margin-top:3px}
.post-title{margin:4px 0 8px;font-size:18px}
.post-body{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.6}
.post-body a{color:var(--blue);text-decoration:underline}
.review-note{margin:0 0 10px;padding:9px 12px;border-radius:10px;background:#fff6e0;font-size:13px;color:#7a5600}
.post-actions{display:flex;align-items:center;gap:8px;margin-top:14px;flex-wrap:wrap}
.act{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 14px;font-size:13px;font-weight:600;color:var(--muted)}
.act.on{background:var(--pale);color:var(--blue);border-color:#c9d6ff}
.more{position:relative;margin-left:auto}
.more summary{list-style:none;cursor:pointer;padding:7px 14px;border-radius:999px;font-size:13px;font-weight:600;color:var(--muted);border:1px solid transparent}
.more summary::-webkit-details-marker{display:none}
.more[open] summary{border-color:var(--line);background:#fff}
.more-menu{position:absolute;right:0;top:100%;z-index:5;min-width:170px;margin-top:6px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 10px 30px #1d2a4018;padding:6px;display:grid}
.more-menu button{border:0;background:none;text-align:left;padding:9px 12px;border-radius:8px;font-size:14px}
.more-menu button:hover{background:var(--bg)}
.danger-text{color:#b42318}
.comments{margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
.comment-list{list-style:none;margin:0 0 14px;padding:0;display:grid;gap:14px}
.comment{padding:12px 14px;border-radius:12px;background:var(--bg)}
.comment .post-head{margin-bottom:6px}
.comment .avatar-letter{width:30px;height:30px;font-size:12px}
.comment-form{display:grid;gap:10px;justify-items:end}
.comment-form textarea{min-height:60px}
.reasons{margin:12px 0 0;padding-left:20px;color:var(--muted);font-size:13px}
.more-wrap{text-align:center;margin:8px 0 24px}
.check-list{display:grid;gap:6px;max-height:240px;overflow:auto;margin:10px 0;padding:10px;border:1px solid var(--line);border-radius:10px}
@media (max-width:700px){.composer,.post{padding:15px}.more-menu{right:auto;left:0}}
.composer .dialog-error:empty{display:none}

/* Trang khóa học dạng cộng đồng: tiêu đề, tab, nội dung chính và thanh bên */
.hub-head{margin:0 0 4px}
.hub-back{display:inline-block;font-size:13px;color:var(--muted);margin-bottom:8px}
.hub-back:hover{color:var(--blue)}
.hub-head h1{margin:0 0 10px;font-size:28px;line-height:1.2;overflow-wrap:anywhere}
.hub{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px;align-items:start}
.hub-main{min-width:0}
.hub .community{max-width:none}
.hub-side{position:sticky;top:116px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.cover{display:flex;flex-direction:column;justify-content:space-between;gap:16px;min-height:150px;padding:22px;background:#6c2631;color:#fff}
.cover.mint{background:#e4f2ef;color:#25695c}
.cover.navy{background:#452d34;color:#fff}
.cover .art-kicker{font-size:10px;letter-spacing:1.8px;font-weight:750}
.cover .art-title{font-size:22px;font-weight:700;line-height:1.18;letter-spacing:-.4px;overflow-wrap:anywhere}
.side-body{padding:18px 20px 20px}
.side-body h2{margin:0 0 4px;font-size:18px;line-height:1.3}
.side-teacher{margin:0 0 10px;color:var(--muted);font-size:13px}
.side-desc{margin:0 0 14px;font-size:14px;line-height:1.55;overflow-wrap:anywhere}
.side-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:0 0 16px;padding:14px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);text-align:center}
.side-stats div{margin:0}
.side-stats dt{font-size:20px;font-weight:700}
.side-stats dd{margin:2px 0 0;font-size:12px;color:var(--muted)}
.side-price{margin:0 0 12px;font-size:20px;font-weight:700}
.side-body .btn.full,.side-body a.btn{display:flex;width:100%;justify-content:center;margin-top:10px;box-sizing:border-box}
.about.card-block{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:0 0 22px;overflow:hidden}
.about.card-block>*:not(.cover){margin-left:24px;margin-right:24px}
.about .cover{min-height:190px;padding:28px;margin-bottom:20px}
.about .cover .art-title{font-size:28px}
.about h2{font-size:18px;margin:22px 24px 10px}
.outline{list-style:none;padding:0;margin:0}
.outline li{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px solid var(--line);font-size:15px}
.outline li:last-child{border-bottom:0}
.outline small{color:var(--muted);white-space:nowrap}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 18px}
.chip{font:inherit;font-size:14px;font-weight:600;padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--muted);cursor:pointer}
.chip:hover{border-color:var(--blue);color:var(--blue)}
.chip.active{background:var(--blue);border-color:var(--blue);color:#fff}
.chip:focus-visible{outline:3px solid #83a4ff;outline-offset:2px}
@media(max-width:1000px){.hub{grid-template-columns:1fr}.hub-side{position:static}.hub-side .cover{min-height:110px}.hub-head h1{font-size:23px}}

.app-shell>main{margin-top:0;margin-bottom:0}
.composer .composer-extra{display:none}
.composer:focus-within .composer-extra,.composer.filled .composer-extra{display:block}
.composer:focus-within .composer-foot.composer-extra,.composer.filled .composer-foot.composer-extra{display:flex}
.composer textarea{min-height:52px}
.composer:focus-within textarea,.composer.filled textarea{min-height:110px}
.composer .composer-extra label{margin-top:12px}
.side-teacher{font-weight:600;color:var(--ink)}

/* Ảnh bìa, ảnh đại diện, đăng nhập Google/Apple */
.avatar-img,.avatar-letter{width:38px;height:38px;border-radius:50%;flex-shrink:0}
.avatar-img{object-fit:cover;background:var(--pale);display:block}
.avatar-sm{width:30px!important;height:30px!important;font-size:13px}
.avatar-xl{width:96px!important;height:96px!important;font-size:38px}
.account-link{display:inline-flex;align-items:center;gap:9px;color:inherit;text-decoration:none}
.account-link:hover .account-label{color:var(--blue)}
.cover-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.course-art.has-cover{padding:0;min-height:0;aspect-ratio:16/9;background:var(--pale)}
.course-art.has-cover .art-kicker,.course-art.has-cover .art-title,.course-art.has-cover .art-footer{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.cover.has-cover{position:relative;padding:0;min-height:0;aspect-ratio:16/9;background:var(--pale)}
.about .cover.has-cover{margin-bottom:20px}
.avatar-editor{display:flex;gap:20px;align-items:center;margin:14px 0 18px;flex-wrap:wrap}
.avatar-actions{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0}
.avatar-actions label.btn{cursor:pointer}
.cover-editor{display:flex;gap:20px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;margin:0 0 18px;flex-wrap:wrap}
.cover-preview{position:relative;width:240px;aspect-ratio:16/9;border-radius:10px;overflow:hidden;background:var(--pale);display:grid;place-items:center;text-align:center;padding:6px}
.cover-preview .subtext{margin:0;font-size:12px}
.social-login{margin:6px 0 4px;display:flex;flex-direction:column;align-items:center;gap:10px}
.social-slot{min-height:0;display:flex;justify-content:center}
.apple-btn{background:#000!important;color:#fff!important;border-color:#000!important;width:300px;max-width:100%;justify-content:center;font-weight:600;border-radius:4px}
.divider{width:100%;display:flex;align-items:center;gap:12px;margin:8px 0 0;color:var(--muted);font-size:13px}
.divider::before,.divider::after{content:"";flex:1;border-top:1px solid var(--line)}
@media(max-width:600px){.account-label{display:none}.cover-preview{width:100%}}

.offline-page{max-width:520px;margin:12vh auto;padding:0 16px;text-align:center}.offline-page img{max-width:240px;height:auto}
.dialog-error.ok{color:var(--green)}

.site-notice{display:flex;align-items:center;justify-content:center;gap:12px;padding:9px 16px;background:#fff3c4;color:#5a4300;border-bottom:1px solid #ecd37a;font-size:.92rem;line-height:1.4;text-align:center}
.site-notice[hidden]{display:none}
.site-notice a{color:#5a4300;font-weight:600;text-decoration:underline}
.site-notice-close{flex:none;border:0;background:transparent;color:#5a4300;font-size:1.3rem;line-height:1;cursor:pointer;padding:2px 6px;border-radius:6px}
.site-notice-close:hover{background:rgba(90,67,0,.12)}
.lc-table{max-height:340px;margin:10px 0}
.pill.red{background:#fde8ea;color:#982632}

.bc-section{margin-bottom:18px}.bc-courses{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:2px 16px;max-height:320px;overflow:auto;padding:6px 2px}
.bc-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}@media(max-width:640px){.bc-row{grid-template-columns:1fr}}
.bc-section textarea{width:100%;font:inherit}.bc-err{color:#982632;font-weight:600}
.bc-tabs{display:flex;gap:8px;margin:8px 0 14px}.bc-tabs .btn.active{background:var(--blue);color:#fff;border-color:var(--blue)}
.bc-section>label,.bc-section #bc-same>label,.bc-section #bc-ai>label,.bc-row label{display:block;margin:14px 0 6px;font-weight:600}
.bc-section input:not([type=checkbox]),.bc-section select{width:100%}.bc-section .check-label{display:flex;margin:6px 0}
.bc-courses .check-label{font-weight:400}
.btn.danger{color:#982632;border-color:#e6b9bf}.btn.danger:hover{background:#fde8ea}.actions-cell{white-space:nowrap}

.nav-label{margin:16px 12px 4px;font-size:11px;letter-spacing:.08em;font-weight:700;color:var(--muted)}.nav-label:first-child{margin-top:4px}
.stat-tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:16px 0 24px}.stat-tile{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px}.stat-tile strong{display:block;font-size:26px;color:var(--ink)}.stat-tile span{color:var(--muted);font-size:13px}.stat-tile a{text-decoration:none;color:inherit;display:block}.stat-tile.warn{border-color:#e6b9bf;background:#fde8ea}
.pos-cell{white-space:nowrap}.pos-cell strong{font-size:18px;margin-right:6px}.move{display:inline-flex;flex-direction:column;gap:2px;vertical-align:middle}.btn.tiny{padding:0 7px;min-height:20px;font-size:10px;line-height:18px}
@media(max-width:800px){.nav-label{display:none}}
#ac-root h2{margin-top:28px}#ac-root .pill{white-space:nowrap}#ac-root table{min-width:900px}.ac-actions{min-width:112px}#ac-root .page-heading .btn{white-space:nowrap;align-self:flex-start;flex:none}
.ac-actions{display:flex;flex-direction:column;gap:6px;min-width:130px;align-items:stretch}.ac-actions .btn{white-space:nowrap;text-align:center}