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ordering-blink{0%{background:#fff}25%{background:#f8fafc}50%{background:#eef2ff}75%{background:#f8fafc}to{background:#fff}}@media(max-width:960px){.student-macos-bg{padding:0}.student-shell{grid-template-columns:1fr;transform:none;max-width:none;width:100%;min-height:100vh;border-radius:0;box-shadow:none}}.student-shell.single-column{grid-template-columns:1fr;max-width:1000px}@media(max-width:960px){.student-shell.single-column{max-width:none;width:100%;min-height:100vh;border-radius:0;box-shadow:none}}@media(max-width:960px){.welcome-block{padding-left:72px}.student-sidebar{display:none}.student-sidebar.open{display:flex;position:fixed;top:0;left:0;height:100vh;width:280px;max-width:80vw;z-index:5000;background:#edf1f7;box-shadow:0 24px 48px #0000002e;pointer-events:auto}.mobile-menu-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 14px;border-radius:12px;border:1px solid #e2e8f0;background:#fff;font-weight:700;cursor:pointer;box-shadow:0 6px 14px 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ease}.profile-avatar-lg.clickable:hover{transform:scale(1.05)}.empty-state{padding:14px;border-radius:12px;background:#f8fafc;color:#475569;font-weight:600;margin-bottom:12px}.sidebar-item.active{background:#e0e7ff;font-weight:800}.profile-avatar-lg{cursor:pointer}.profile-avatar-lg:hover{transform:scale(1.04)}.skeleton-box{display:inline-block;background:linear-gradient(90deg,#e5e7eb,#f4f4f5,#e5e7eb);background-size:200% 100%;animation:skeleton 1.2s ease-in-out infinite;border-radius:12px}.skeleton-text{height:14px}.skeleton-bar{height:10px}.w-200{width:200px}.w-260{width:260px}.w-140{width:140px}.w-120{width:120px}.mt-6{margin-top:6px;display:block}.mt-10{margin-top:10px;display:block}.mt-14{margin-top:14px;display:block}.skeleton-card{min-height:120px}@keyframes skeleton{0%{background-position:200% 0}to{background-position:-200% 0}}.profile-card{display:grid;grid-template-columns:200px 1fr;gap:24px;background:#fff;border-radius:18px;border:1px solid #e2e8f0;padding:24px;box-shadow:0 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strong{color:#0f172a;font-weight:800;margin-left:6px;flex-shrink:0}.photo-preview-card{background:#fff;padding:18px;border-radius:18px;box-shadow:0 18px 42px #00000026;display:flex;flex-direction:column;align-items:center;gap:12px;max-width:420px}.photo-preview-img{max-width:360px;max-height:360px;border-radius:16px;object-fit:contain;box-shadow:0 12px 28px #00000026}.profile-info-row{display:flex;justify-content:space-between;align-items:center;background:#f8fafc;border-radius:12px;padding:12px 14px;border:1px solid #e2e8f0}.profile-info-row span{color:#64748b;font-weight:700}.profile-info-row strong{color:#0f172a;font-weight:800}.info-group{background:#f8fafc;border:1px solid #e2e8f0;border-radius:14px;padding:14px;display:flex;flex-direction:column;gap:8px}.info-title{font-weight:800;color:#0f172a;margin-bottom:6px}.edit-card{margin-top:14px;background:#fff;border:1px solid #e2e8f0;border-radius:14px;padding:14px;display:flex;flex-direction:column;gap:10px;box-shadow:0 8px 24px #0000000f}.edit-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px;margin-top:14px}.edit-field{display:flex;flex-direction:column;gap:6px;font-weight:700;color:#0f172a}.edit-field input{padding:10px 12px;border-radius:10px;border:1px solid #e2e8f0;font-size:14px}.edit-message{padding:10px 12px;border-radius:10px;font-weight:700;font-size:13px}.edit-message.success{background:#dcfce7;color:#166534;border:1px solid #86efac}.edit-message.error{background:#fee2e2;color:#b91c1c;border:1px solid #fecdd3}@media(max-width:768px){.profile-card{grid-template-columns:1fr}.avatar-grid{grid-template-columns:repeat(auto-fit,minmax(64px,1fr))}.avatar-modal-card{width:90vw}}