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208px),100%);aspect-ratio:1;margin:auto;position:relative;display:grid;place-items:center;background:#fff}.portal-qr{width:100%;aspect-ratio:1;display:grid;place-items:center;overflow:hidden}.portal-qr svg{display:block;max-width:100%;max-height:100%;width:auto;height:auto;shape-rendering:crispEdges}.qr-frame>p{position:absolute;inset:0;display:grid;place-items:center;padding:20px;font-size:22px;background:#fff;color:#62676b;margin:0}.attendance-page.idle .qr-frame>p{background:#ededed}.course-caption{font-size:20px;margin:16px auto 0;max-width:1000px;overflow-wrap:anywhere;line-height:1.5}.attendance-warning{color:#955d16;font-size:14px;margin:12px auto;max-width:800px;overflow-wrap:anywhere}.ams-menu{position:fixed;left:0;top:0;bottom:0;z-index:20;background:#fff;width:300px;max-width:calc(100% - 36px);padding:16px 20px;overflow:auto;box-shadow:3px 0 12px #0002;font-family:Arial,Microsoft YaHei,sans-serif;font-size:14px;text-align:left}.menu-title{display:flex;justify-content:space-between;align-items:center;font-size:18px;margin-bottom:20px}.ams-menu>button{display:flex;align-items:center;gap:14px;width:100%;min-height:50px;text-align:left}.ams-menu>button:hover{background:#f4f5f6}.ams-menu details{padding:14px 0}.ams-menu summary{cursor:pointer}.ams-menu form{margin-top:14px}.ams-menu input{width:100%;padding:10px;margin:8px 0 12px;border:1px solid #c8cdd2;border-radius:2px;font-size:14px}.ams-menu label{display:block;overflow-wrap:anywhere}.ams-menu p{color:#a43636;overflow-wrap:anywhere;line-height:1.5}.menu-backdrop{position:fixed;inset:0;z-index:19;background:#0005}.course-choices{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin:0 auto 18px;max-width:740px}.course-choices button{min-height:44px;padding:10px 14px;border:1px solid #c9d1d8;border-radius:2px;overflow-wrap:anywhere;max-width:100%}.course-choices button[aria-pressed=true]{background:var(--primary);color:#fff;border-color:var(--primary)}@media(max-width:700px){.calculator-page{padding:0 16px 24px}.calculator-header{height:64px}.calculator-layout{margin-top:24px;gap:24px;flex-direction:column;align-items:center}.history{width:440px}.keypad button{height:60px}.display{height:150px;padding:20px}.desktop-title{height:38px;font-size:16px}.ams-toolbar{height:66px;padding:0 10px;gap:14px;flex-wrap:wrap}.ams-toolbar #roomCode{font-size:24px}.ams-toolbar time{font-size:15px}.ams-content{padding:20px 14px}.qr-frame{width:min(100%,calc(100dvh - 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