*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{color:#1f2430;background:#f5f7fc;font-family:Helvetica Neue,Helvetica,Arial,Apple SD Gothic Neo,Malgun Gothic,sans-serif}button{font-family:inherit}.page-loading{color:#667;justify-content:center;align-items:center;height:100vh;font-size:18px;display:flex}.login-container{background:#f3f4f6;min-height:100vh;font-family:Segoe UI,system-ui,-apple-system,BlinkMacSystemFont,sans-serif;display:flex}.brand-side{color:#c7d2fe;background:#1e1b4b;flex-direction:column;width:34%;min-width:280px;padding:3rem 2.5rem;display:flex}.brand-logo{color:#fff;letter-spacing:.02em;font-size:1.1rem;font-weight:700}.brand-mid{margin-top:auto}.brand-headline{color:#fff;margin:0;font-size:1.9rem;font-weight:600;line-height:1.25}.brand-sub{color:#a5b4fc;margin-top:.9rem;font-size:1rem}.brand-art{margin-top:1.8rem}.form-side{background:#fff;flex:1;justify-content:center;align-items:center;padding:3rem 2rem;display:flex}.form-inner{width:100%;max-width:360px}.login-title{color:#1f2937;margin:0 0 .3rem;font-size:1.6rem;font-weight:700}.login-subtitle{color:#6b7280;margin:0 0 1.8rem;font-size:.95rem}.login-form{flex-direction:column;display:flex}.input-group{flex-direction:column;gap:.4rem;margin-bottom:1.2rem;display:flex}.input-label{color:#374151;font-size:.85rem;font-weight:600}.text-input{border:1px solid #d1d5db;border-radius:8px;padding:.7rem .85rem;font-size:.95rem;transition:border-color .15s,box-shadow .15s}.text-input:focus{border-color:#4f46e5;outline:none;box-shadow:0 0 0 3px #4f46e526}.text-input:disabled{cursor:not-allowed;background-color:#f5f5f5}.text-input::placeholder{color:#9ca3af}.form-error-box{color:#dc2626;text-align:center;background-color:#fef2f2;border:1px solid #fecaca;border-radius:8px;margin-bottom:1.1rem;padding:.7rem .8rem;font-size:.85rem}.submit-button{color:#fff;cursor:pointer;background:#4f46e5;border:none;border-radius:8px;padding:.8rem;font-size:.95rem;font-weight:600;transition:background .15s}.submit-button:hover:not(:disabled){background:#4338ca}.submit-button:disabled{opacity:.7;cursor:not-allowed}.register-section{color:#6b7280;margin-top:1.3rem;font-size:.88rem}.register-link{color:#4f46e5;cursor:pointer;background:0 0;border:none;padding:0;font-size:.88rem;font-weight:600}.register-link:hover{text-decoration:underline}@media (width<=640px){.brand-side{display:none}}.map-page{max-width:1140px;margin:0 auto;padding:24px 20px 60px}.map-header{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.map-header h1{margin:0;font-size:24px}.map-header-user{color:#556;align-items:center;gap:4px;font-size:14px;display:flex}.link-button{color:#4f46e5;cursor:pointer;background:0 0;border:none;font-size:13px}.link-button:hover{text-decoration:underline}.chapter-section{background:#fff;border-radius:16px;margin-top:18px;padding:20px 24px;box-shadow:0 4px 14px #1e285a0f}.chapter-section h2{margin:0 0 18px;font-size:18px}.mission-track{flex-wrap:wrap;align-items:center;gap:4px;display:flex}.mission-track-item{align-items:center;display:flex}.track-connector{border-radius:2px;width:28px;height:4px}.connector-open{background:#7bc97f}.connector-locked{background:#d8dce8}.mission-node{text-align:center;border:2px solid #0000;border-radius:14px;flex-direction:column;justify-content:center;align-items:center;gap:6px;width:108px;height:96px;padding:8px;text-decoration:none;transition:transform .12s,box-shadow .12s;display:flex}.mission-node .mission-icon{font-size:24px}.mission-node .mission-title{color:#334;font-size:12.5px;line-height:1.25}.mission-node.available{background:#fff7e0;border-color:#ffc94d}.mission-node.available:hover{transform:translateY(-2px);box-shadow:0 6px 14px #ffab1940}.mission-node.passed{background:#eaf8ec;border-color:#7bc97f}.mission-node.locked{opacity:.7;cursor:not-allowed;background:#f0f2f8}.mission-page{height:100vh;display:flex}.mission-panel{background:#fff;border-right:1px solid #e2e6f0;flex-direction:column;flex-shrink:0;width:340px;padding:18px 20px;display:flex;overflow-y:auto}.back-link{color:#4f46e5;margin-bottom:8px;font-size:13px;text-decoration:none}.mission-panel h2{margin:0 0 10px;font-size:20px}.mission-description{color:#333c4d;font-size:14px;line-height:1.55}.mission-description h3{margin:14px 0 6px;font-size:15px}.mission-description h4{margin:12px 0 4px;font-size:14px}.mission-description p{margin:6px 0}.step-line{padding-left:6px}.mission-actions{margin-top:auto;padding-top:16px}.run-preview{color:#445;background:#f0f3fb;border-radius:8px;padding:8px 10px;font-size:13px}.grade-submit-button{color:#fff;cursor:pointer;background:#ffab19;border:none;border-radius:10px;width:100%;padding:12px;font-size:16px;font-weight:700}.grade-submit-button:disabled{cursor:default;background:#d8dce8}.hint{color:#889;margin:8px 0 0;font-size:12.5px}.grade-feedback{border-radius:10px;margin-top:12px;padding:12px 14px;font-size:13.5px}.grade-passed{background:#eaf8ec;border:1px solid #7bc97f}.grade-failed{background:#fdeef0;border:1px solid #f0a4ad}.grade-feedback h3{margin:0 0 8px;font-size:15px}.grade-feedback ul{margin:0;padding-left:4px;list-style:none}.grade-feedback li{margin:3px 0}.check-pass{color:#2c7a37}.check-fail{color:#b8323f}.grade-counts{color:#445;margin:8px 0 0;font-size:12.5px}.next-link{color:#2c7a37;margin-top:12px;font-size:14.5px;font-weight:700;text-decoration:none;display:block}.mission-editor{flex-grow:1;position:relative}.scratch-embed{border:none;width:100%;height:100%;position:absolute;inset:0}.teacher-page{max-width:1160px;margin:0 auto;padding:26px 20px 60px}.teacher-brand{color:#99a;letter-spacing:.04em;font-size:13px;font-weight:700}.teacher-header{justify-content:space-between;align-items:flex-end;margin-bottom:18px;display:flex}.teacher-header h1{color:#1f2430;margin:4px 0 0;font-size:23px}.teacher-actions{gap:16px;display:flex}.teacher-stats{flex-wrap:wrap;gap:14px;margin-bottom:16px;display:flex}.t-stat{background:#fff;border-radius:12px;align-items:baseline;gap:9px;padding:13px 18px;display:flex;box-shadow:0 4px 14px #1e1b4b0f}.t-stat b{color:#1f2430;font-size:20px}.t-stat span{color:#778;font-size:12.5px}.t-stat-warn b{color:#d64550}.class-filter{flex-wrap:wrap;gap:8px;margin-bottom:14px;display:flex}.class-filter button{color:#556;cursor:pointer;background:#fff;border:1px solid #d5dae6;border-radius:99px;padding:7px 15px;font-size:13px;font-weight:600}.class-filter button:hover{border-color:#4f46e5}.class-filter button.active{color:#fff;background:#4f46e5;border-color:#4f46e5}.teacher-table-wrap{background:#fff;border-radius:14px;overflow-x:auto;box-shadow:0 6px 22px #1e1b4b14}.teacher-table{border-collapse:collapse;width:100%;font-size:13.5px}.teacher-table th{text-align:center;color:#445;white-space:nowrap;background:#f4f6fc;padding:12px 10px;font-size:12.5px}.teacher-table th small{color:#99a;text-overflow:ellipsis;max-width:90px;margin:2px auto 0;font-weight:500;display:block;overflow:hidden}.teacher-table td{text-align:center;border-top:1px solid #eef0f7;padding:9px 10px}.teacher-table tbody tr:hover{background:#fafbff}.t-student{color:#334;min-width:120px;font-weight:700;text-align:left!important;padding-left:16px!important}.t-cell{cursor:pointer;min-width:76px}.t-mark{border-radius:50%;justify-content:center;align-items:center;width:22px;height:22px;font-size:12.5px;font-weight:800;display:inline-flex}.t-pass .t-mark{color:#047857;background:#d1fae5}.t-try .t-mark{color:#4338ca;background:#e0e7ff}.t-struggle .t-mark{color:#d64550;background:#fee2e2}.t-struggle{background:#fff7f7}.t-cell small{color:#99a;white-space:nowrap;margin-top:2px;font-size:10.5px;display:block}.t-none{color:#ccd}.t-ratio{color:#4f46e5;min-width:84px;font-size:12.5px;font-weight:700}.t-bar{background:#e8ebf5;border-radius:99px;width:62px;height:5px;margin:0 auto 4px;overflow:hidden}.t-bar i{background:linear-gradient(90deg,#10b981,#4f46e5);border-radius:99px;height:100%;display:block}.t-last{color:#778;white-space:nowrap;font-size:12.5px}.t-empty{color:#99a;padding:28px!important}.teacher-table tfoot td{color:#667;background:#f8f9fe;border-top:2px solid #e4e7f2;padding:10px;font-size:11.5px}.t-foot-label .t-student{font-size:12px;color:#778!important}.t-foot-pass{color:#334;font-size:12px;font-weight:700}.t-foot-sub{color:#99a;margin-top:1px}.t-legend{color:#889;margin:12px 4px 0;font-size:12px}.t-legend-warn{color:#d64550;background:#fee2e2;border-radius:50%;justify-content:center;align-items:center;width:16px;height:16px;font-size:11px;font-weight:800;display:inline-flex}.t-modal-backdrop{z-index:100;background:#14162880;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.t-modal{background:#fff;border-radius:14px;width:440px;max-width:92vw;padding:22px 24px}.t-modal h3{margin:0 0 8px;font-size:16px}.t-modal-meta{color:#667;margin:6px 0;font-size:13px}.t-checks{background:#f7f8fd;border-radius:10px;margin:10px 0;padding:10px 12px;font-size:13px;list-style:none}.t-checks li{margin:4px 0}.t-checks .check-pass{color:#2c7a37}.t-checks .check-fail{color:#b8323f}.t-close{color:#fff;cursor:pointer;background:#4f46e5;border:none;border-radius:8px;margin-top:8px;padding:8px 18px;font-size:13px;font-weight:600}.grade-counts-note{color:#99a;margin-top:4px;font-size:11.5px;display:block}.odyssey-page{color:#e6e8fb;background:radial-gradient(60% 40% at 75% 8%,#4f46e559,#0000 60%),radial-gradient(50% 45% at 10% 92%,#ff408133,#0000 65%),#0d0a2e;min-height:100vh;position:relative;overflow:hidden}.odyssey-header{z-index:2;justify-content:space-between;align-items:center;max-width:1140px;margin:0 auto;padding:22px 32px 0;display:flex;position:relative}.odyssey-logo{color:#fff;letter-spacing:.02em;font-family:Segoe UI,system-ui,-apple-system,sans-serif;font-size:17px;font-weight:600}.odyssey-user{color:#b9bfe6;align-items:center;gap:12px;font-size:12.5px;display:flex}.odyssey-chip{border:1px solid #b9bfe659;border-radius:99px;padding:6px 14px}.odyssey-logout{color:#8f96c9;cursor:pointer;background:0 0;border:none;font-size:12.5px}.odyssey-logout:hover{color:#fff;text-decoration:underline}.odyssey-chapters{z-index:2;max-width:1140px;margin:0 auto;padding:0 12px 60px;position:relative}.va+.va{border-top:1px solid #8c93cd2e;margin-top:12px}.odyssey-loading{z-index:2;color:#9aa0d0;justify-content:center;align-items:center;height:60vh;font-size:15px;display:flex;position:relative}.va{color:#e6e8fb;position:relative}.odyssey-stars{pointer-events:none;background-image:radial-gradient(1.5px 1.5px at 12% 22%,#fff,#0000),radial-gradient(1px 1px at 32% 68%,#fffc,#0000),radial-gradient(1.5px 1.5px at 51% 12%,#ffffffe6,#0000),radial-gradient(1px 1px at 66% 42%,#ffffffb3,#0000),radial-gradient(2px 2px at 84% 74%,#fff,#0000),radial-gradient(1px 1px at 92% 28%,#fffc,#0000),radial-gradient(1px 1px at 22% 88%,#fff9,#0000),radial-gradient(1.5px 1.5px at 44% 46%,#ffffff80,#0000),radial-gradient(1px 1px at 74% 90%,#ffffffb3,#0000);position:absolute;inset:0}.va-head{z-index:2;padding:28px 32px 0;position:relative}.va-head h2{color:#fff;margin:0;font-size:24px;font-weight:800}.va-sub{color:#9aa0d0;margin-top:6px;font-size:13.5px}.va-progress{background:#ffffff1f;border-radius:99px;width:260px;height:8px;margin-top:14px;overflow:hidden}.va-progress i{background:linear-gradient(90deg,#34d399,#4f46e5);border-radius:99px;height:100%;transition:width .4s;display:block}.va-map{z-index:2;height:380px;margin-top:8px;position:relative}.va-orbit{width:100%;height:100%;position:absolute;inset:0}.va-node{text-align:center;flex-direction:column;align-items:center;gap:10px;width:130px;text-decoration:none;display:flex;position:absolute;transform:translate(-50%,-50%)}.va-orb{color:#fff;border-radius:50%;justify-content:center;align-items:center;width:62px;height:62px;font-size:22px;font-weight:800;display:flex}.va-node span{color:#c6cbee;text-shadow:0 2px 8px #000c;font-size:12.5px;line-height:1.3}.va-passed .va-orb{background:radial-gradient(circle at 30% 30%,#6ee7b7,#059669);box-shadow:0 0 22px #34d3998c,inset 0 0 12px #ffffff40}.va-current .va-orb{background:radial-gradient(circle at 30% 30%,#ff79a8,#e0336d);width:78px;height:78px;font-size:28px;animation:1.8s ease-in-out infinite va-pulse}.va-current span{color:#ffd7e6;font-weight:700}@keyframes va-pulse{0%,to{box-shadow:0 0 26px #ff408199,0 0 60px #ff408140}50%{box-shadow:0 0 42px #ff4081f2,0 0 110px #ff408173}}.va-locked .va-orb{color:#c6cbee8c;background:#787eb429;border:1.5px solid #8c93cd59;font-size:18px;box-shadow:inset 0 0 14px #0006}.va-locked span{color:#6d739f}.odyssey-teacher-link{color:#a5b4fc;border:1px solid #a5b4fc66;border-radius:99px;padding:6px 14px;font-size:12.5px;text-decoration:none}.odyssey-teacher-link:hover{color:#fff;border-color:#a5b4fc}