.qr-contents-wrapper{margin:0;padding:0;box-sizing:border-box}.body-class{background-color:#f9f9f9}#contents{display:flex;max-width:100%;position:relative;margin-bottom:.5rem;padding:1.5rem;justify-content:space-between}.qr-header img{vertical-align:bottom;margin-right:1em;width:55px;height:auto}.title{vertical-align:text-bottom;display:inline-block;margin:5px 0 0;padding:0;font-family:Shippori Mincho B1,serif;font-size:2.3rem;font-weight:500}#camera,#picture,#result{justify-content:center;margin:5px;flex:0 1 40%}#picture{width:50vw;height:50vw;flex:0 1 40%;box-shadow:2px 2px 4px}#camera{width:50vw;height:50vw;box-shadow:2px 2px 4px}#picture{display:none}#result{border:2px solid #006798;max-width:400px;height:250px;padding:10px;margin-bottom:2.5rem}#get-test{padding:1rem}#get-test input{background-color:#006798;color:#fff;border-radius:5px;padding:1em;border:none;background:linear-gradient(#ff7e55,#ff5722);box-shadow:0 0 10px 3px #ff572280;cursor:pointer}#get-test input:active{box-shadow:0 0 5px 1px #ff5722b3}.text-wrapper{flex:0 1 40%;width:400px}small{color:gray}.red{color:red;font-size:2.5rem;padding:1rem}.result-content{padding:0;margin:0}.sav-error{color:#8a2be2;font-size:2.3rem;padding:1rem}.qr-header{background-color:#006798;color:#fff;height:130px;padding:2rem}.caution{font-family:"M PLUS 1 Code",sans-serif;margin:10px;padding:1rem;line-height:1.7;background-color:#fff;border-radius:10px}.video-container{width:600px;height:600px;position:relative;overflow:hidden;background-color:#000;display:flex;align-items:center;justify-content:center}.display-canvas{width:100%;height:100%;object-fit:cover;transform:translateZ(0);backface-visibility:hidden;-webkit-transform:translateZ(0);-webkit-backface-visibility:hidden;will-change:transform}.transparent-canvas{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transform:translateZ(0);backface-visibility:hidden;-webkit-transform:translateZ(0);-webkit-backface-visibility:hidden;will-change:transform;pointer-events:none}:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.teacher-layout{display:flex;flex-direction:column;min-height:100vh}.content-wrapper{flex:1;padding:20px;margin-top:20px}