@import"https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Manrope:wght@400;500;600;700;800&family=Noto+Sans+KR:wght@400;500;600;700;800;900&display=swap";:root{font-family:Manrope,Noto Sans KR,sans-serif;color:#172033;background:#f7f9fc;font-synthesis:none;text-rendering:optimizeLegibility;--navy: #172033;--muted: #718096;--line: #e7ebf2;--blue: #4d6fff;--mint: #5ed2b2;--warm: #fff3d1;--surface: #ffffff}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:#f7f9fc}button,input,textarea{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(77,111,255,.25);outline-offset:2px}.page-container{width:min(1180px,calc(100% - 48px));margin:0 auto}.home-shell{min-height:100vh;overflow:hidden;position:relative;background:radial-gradient(circle at 10% 12%,#edf0ff 0,transparent 28%),radial-gradient(circle at 92% 86%,#e0fff6 0,transparent 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button.active{border-color:#cbd3ff;color:var(--blue);background:#f7f8ff}.duration-field{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:12px;color:#7d899c;font-size:10px;font-weight:800}.duration-field input{width:70px;padding:8px;border:1px solid #e1e6ef;border-radius:8px;text-align:center;color:var(--navy)}.activity-modal{width:min(430px,100%)}.activity-modal h3{margin-bottom:15px}.activity-modal-list{display:flex;flex-direction:column;gap:7px;max-height:min(55vh,430px);overflow-y:auto}.activity-modal-list>button{display:grid;grid-template-columns:30px minmax(0,1fr) auto;align-items:center;gap:9px;width:100%;padding:10px;border:1px solid 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#dce2ff;border-radius:10px;color:var(--blue);background:#f7f8ff;font-size:10px;font-weight:800}.student-main{width:min(1030px,calc(100% - 48px));margin:0 auto;padding:48px 0 75px}.student-banner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:26px 30px;margin-bottom:20px;border-radius:20px;background:var(--navy);box-shadow:0 18px 36px #17203321}.student-welcome{display:flex;align-items:center;gap:17px;color:#fff}.welcome-avatar{width:48px;height:48px;color:var(--navy);background:var(--mint);font-size:18px}.student-welcome h1{margin:7px 0 4px;color:#fff;font-size:24px;letter-spacing:-.07em}.student-welcome p{margin:0;color:#aab7cb;font-size:10px}.student-group{display:flex;align-items:center;gap:7px;padding:12px 14px;border:1px solid rgba(255,255,255,.14);border-radius:12px;color:#aab7cb;font-size:10px}.student-group svg{color:var(--mint)}.student-group strong{color:#fff}.student-status{display:flex;align-items:center;gap:8px;padding:10px 12px;margin-bottom:21px;border:1px solid #ffe8da;border-radius:10px;color:#ae836e;background:#fffaf7;font-size:10px}.student-status.connected{color:#5e8d82;border-color:#d8f4eb;background:#f6fefa}.student-status button{display:grid;place-items:center;margin-left:auto;padding:4px;border:0;color:inherit;background:transparent}.student-shell .workspace-main{max-width:1020px}.back-button{display:none;border:0}.student-room{margin-left:auto}.gallery-callout{display:flex;align-items:center;gap:12px;padding:17px;margin-top:25px;border:1px solid #e0dcff;border-radius:14px;color:#7268bf;background:#f9f7ff}.gallery-callout svg{color:#9b91ed}.gallery-callout div{display:flex;flex-direction:column;gap:4px}.gallery-callout strong{font-size:12px}.gallery-callout span{color:#9991bc;font-size:10px}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes toast-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@media(max-width:900px){.hero{grid-template-columns:1fr;gap:40px;padding-top:25px}.hero-copy{padding-left:0}.hero h1{font-size:56px}.join-card{margin:0 auto}.workspace-layout{grid-template-columns:1fr}.control-rail{border-right:0;border-bottom:1px solid var(--line)}.rail-intro{padding-bottom:15px}.control-block{padding:14px 8px}.rail-bottom{margin-top:0;border-top:0}.workspace-main{padding:28px 28px 60px}}@media(max-width:620px){.page-container{width:min(100% - 28px,1180px)}.home-nav{height:68px}.nav-note{display:none}.hero{min-height:auto;padding:45px 0 50px}.hero h1{font-size:44px}.hero-copy>p{font-size:13px}.workspace-header{gap:9px;padding:0 14px}.workspace-header .ghost-button{padding:5px;font-size:0}.room-chip,.student-room{margin-left:0;padding:6px 7px}.connection-pill{padding:7px;font-size:0}.connection-pill strong{font-size:10px}.workspace-main,.student-main{width:calc(100% - 28px);padding:22px 0 55px}.board-section,.whiteboard-section{padding:16px;border-radius:17px}.section-heading{align-items:start;flex-direction:column;gap:7px}.section-heading h2{font-size:24px}.heading-actions{width:100%;justify-content:space-between}.notes-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.note-card{min-height:140px;padding:14px 12px 11px}.note-card p{font-size:12px}.student-banner{align-items:flex-start;flex-direction:column;padding:20px}.student-group{align-self:stretch;justify-content:center}.student-welcome h1{font-size:21px}.back-button{display:grid}.student-shell .brand-lockup{display:none}.student-room{margin-right:auto}.canvas-tools{width:100%;flex-wrap:wrap}.pen-panel{align-items:flex-start;flex-wrap:wrap}.canvas-frame{min-height:300px}.whiteboard-note{width:118px;min-height:75px;padding:9px}.whiteboard-note p{font-size:11px}.waiting-card{align-items:flex-start;flex-wrap:wrap}.waiting-card .primary-button{margin-left:38px}.backup-actions{grid-template-columns:1fr 1fr}.modal-card{padding:20px}}@media(max-width:620px){.header-action{padding:7px;font-size:0}.header-action svg{margin:0}.teacher-roster .student-roster-item{grid-template-columns:28px minmax(0,1fr) auto 6px}.roster-counts{flex-direction:column;align-items:stretch}.detail-text-modal{width:calc(100vw - 24px);padding:22px 18px}.detail-font-controls{position:static;margin-right:auto}.detail-modal-toolbar{justify-content:flex-end}.detail-text{min-height:220px;padding:30px 14px}}