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24px}.absent-list>div{border-bottom:1px solid var(--line);align-items:center;gap:13px;padding:12px 0;display:flex}.absent-list .badge{margin-left:auto}.absent-list strong{font-size:14px;font-weight:500}.placeholder-panel{flex-direction:column;align-items:center;gap:18px;margin-top:30px;padding:70px 20px;display:flex}.placeholder-icon{color:#7c9e90;background:#edf4f0;border-radius:22px;place-items:center;width:80px;height:80px;display:grid}.placeholder-panel h2{font-size:23px}.placeholder-panel p{text-align:center;color:#8b98a4;font-size:13px;line-height:1.9}.planned-features{color:#6f8378;gap:26px;margin:12px 0 20px;font-size:12px;display:flex}.planned-features>span{align-items:center;gap:7px;display:flex}@media (min-width:1600px){.teacher-main{padding-top:30px}.classroom-content{grid-template-columns:minmax(0,1fr) 328px;gap:24px}.seat-grid{grid-template-rows:22px 25px repeat(5,72px);grid-template-columns:26px repeat(3,minmax(0,1fr)) 33px repeat(3,minmax(0,1fr)) 33px repeat(3,minmax(0,1fr)) 21px;gap:11px 9px}.seat strong{font-size:14px}.seat-attendance{font-size:10px}.seat-speeches{font-size:11px}.classroom-map{padding:18px 30px 0}.classroom-front{height:72px}.stat-card{min-height:110px}.record-actions button{min-height:51px;font-size:12px}.detail-hint{font-size:10px}.teacher-main{max-width:1700px}}@media (max-width:1250px){.student-identity{padding-left:15px;padding-right:15px}.sidebar{width:185px;padding-left:12px;padding-right:12px}.sidebar .brand{margin-left:6px}.brand strong{font-size:17px}.teacher-workspace{margin-left:185px}.teacher-main{padding:26px 24px 20px}.topbar{padding:0 24px}.page-heading{flex-wrap:wrap;align-items:flex-start;gap:12px}.class-actions{margin-top:0}.classroom-content{grid-template-columns:minmax(0,1fr) 256px;gap:16px}.seat-grid{grid-template-rows:20px 18px repeat(5,74px);grid-template-columns:17px repeat(3,minmax(0,1fr)) 17px repeat(3,minmax(0,1fr)) 17px repeat(3,minmax(0,1fr)) 14px;gap:7px 4px}.classroom-map{padding-left:14px;padding-right:14px}.seat strong{font-size:10px}.seat-attendance{font-size:7px}.seat-speeches{font-size:8px}.stat-card{gap:10px;padding:20px 15px}.stat-chip,.stat-note{display:none}.stat-icon{width:36px;height:36px}.stat-number{font-size:28px}.map-footnote{flex-wrap:wrap;line-height:1.6}.live-status{margin-left:20px}.record-actions{gap:7px;margin:0 14px}.detail-metrics,.record-heading{margin-left:15px;margin-right:15px}.record-actions button{padding:10px 8px;font-size:9px}.detail-hint{font-size:8px}.teacher-footer{padding-left:24px;padding-right:24px}}@media (max-width:1020px){.student-detail .detail-hint{font-size:9px}.sidebar{width:76px;padding:24px 9px}.sidebar .brand{margin:0 auto 36px}.sidebar .brand>div,.workspace-label,.nav-item>span,.nav-item i,.semester,.sidebar-foot{display:none}.sidebar .brand-icon{margin:auto}.nav-item{justify-content:center;padding:13px}.nav-item.active:before{left:0}.teacher-workspace{margin-left:76px}.classroom-content{grid-template-columns:minmax(0,1fr)}.detail-column{grid-template-columns:1fr 1fr;align-items:start;display:grid}.keyboard-note{display:none}.seat-grid{grid-template-rows:20px 21px repeat(5,79px);grid-template-columns:20px repeat(3,minmax(0,1fr)) 26px repeat(3,minmax(0,1fr)) 26px repeat(3,minmax(0,1fr)) 17px;gap:8px 6px}.seat strong{font-size:12px}.seat-attendance{font-size:9px}.seat-speeches{font-size:10px}.record-actions button{min-height:47px;font-size:11px}.teacher-footer{font-size:8px}}@media (max-width:700px){.teacher-main{padding:22px 14px}.topbar{height:60px;padding:0 14px}.teacher-name,.topbar-right>svg,.topbar-divider,.breadcrumb{display:none}.topbar{justify-content:flex-end}.stats-grid{grid-template-columns:1fr 1fr;gap:10px}.stat-card{min-height:96px}.course-meta{flex-wrap:wrap;gap:10px}.class-actions{flex-wrap:wrap}.class-actions .button{padding:9px;font-size:10px}.page-heading h1{font-size:25px}.detail-column{grid-template-columns:1fr}.teacher-footer{flex-direction:column;gap:7px}.teacher-map{overflow-x:auto}.teacher-map .seat-grid,.teacher-map .classroom-front,.teacher-map .classroom-back{min-width:540px}.map-toolbar{padding:0 14px 13px}.seat-legends{gap:10px}.map-spec{display:none}.panel-heading{padding:18px 15px}.map-footnote{padding:11px}.planned-features{flex-direction:column;gap:15px}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}.qr-panel{justify-content:space-between;align-items:center;gap:24px;margin-bottom:24px;padding:24px;display:flex}.qr-copy h1{margin:8px 0;font-size:28px}.qr-copy h2{margin-top:18px;font-size:20px}.qr-copy p{color:#52655c;font-size:15px}.qr-counts{flex-wrap:wrap;gap:16px;margin:20px 0;display:flex}.qr-counts strong{color:#14533e;font-size:24px}.qr-image-area{text-align:center;flex-shrink:0;width:280px;max-width:100%}.qr-image-area img{background:#fff;width:100%;height:auto;display:block}.qr-image-area p{font-size:16px}.qr-message{color:#63452b;place-items:center;min-height:200px;padding:20px;display:grid}.projection-page{background:#f4f7f5;place-items:center;min-height:100svh;padding:24px;display:grid}.qr-projection{width:min(1400px,100%);box-shadow:none;border:0;gap:48px;margin:0;padding:36px}.qr-projection .qr-image-area{width:min(65vh,640px)}.qr-projection h1{font-size:clamp(28px,4vw,52px)}.qr-projection .qr-counts strong{font-size:36px}.environment-label{color:#65746b;font-size:12px}@media (max-width:700px){.qr-panel{flex-direction:column;align-items:center;padding:20px}.qr-copy{width:100%}.qr-projection{gap:16px}.qr-projection .qr-image-area{width:min(75vw,440px)}.projection-page{padding:12px}}.qr-projection .qr-copy p,.qr-projection .qr-image-area p{font-size:22px}.qr-projection .qr-copy h2{font-size:28px}.qr-projection .qr-counts span{font-size:20px}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}