*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:linear-gradient(135deg,#8ec5fc,#e0c3fc,#8ec5fc 60%,#1e3a8a);min-height:100vh;overflow-x:hidden;-webkit-font-smoothing:antialiased}.container{padding:20px 20px 40px;max-width:500px;margin:0 auto}.widget{background:#fffffff2;border-radius:24px;padding:20px;margin-bottom:16px;box-shadow:0 10px 30px #00000026;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:transform .3s ease,box-shadow .3s ease;animation:fadeInUp .5s ease}.featured-card{background:linear-gradient(135deg,#1e3a8a,#3b82f6,#2563eb);color:#fff;min-height:180px;position:relative;overflow:hidden;padding:24px}.featured-icon{position:relative;width:80px;height:80px;margin-bottom:16px}.app-icon{position:relative;width:80px;height:80px;background:linear-gradient(145deg,#60a5fa,#3b82f6);border-radius:18px;display:flex;align-items:center;justify-content:center;font-size:42px;box-shadow:0 8px 20px #0000004d}.featured-label{font-size:11px;font-weight:700;letter-spacing:1.5px;opacity:.9;margin-bottom:4px}.featured-title{font-size:26px;font-weight:800;line-height:1.2;margin-bottom:8px}.app-store-icon{position:absolute;top:20px;right:20px;font-size:32px;opacity:.9}.widget-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}.calendar-widget{background:#fffffff2}.calendar-day-label{color:#ef4444;font-size:12px;font-weight:700;letter-spacing:.5px;margin-bottom:8px}.calendar-day{font-size:64px;font-weight:700;line-height:1;margin-bottom:12px;color:#1f2937}.calendar-event{color:#6b7280;font-size:14px;font-weight:500}.progress-widget{background:linear-gradient(135deg,#1f2937,#374151);color:#fff}.progress-location{font-size:13px;font-weight:600;margin-bottom:8px;opacity:.9}.progress-value{font-size:56px;font-weight:700;line-height:1;margin-bottom:8px}.progress-sub{font-size:12px;opacity:.8}.content-section{padding:24px}.section-title{font-size:18px;font-weight:700;margin-bottom:16px;color:#1f2937}.content-item{display:flex;justify-content:space-between;align-items:center;padding:14px 0;border-bottom:1px solid rgba(0,0,0,.05)}.content-item:hover{transform:translate(4px)}.item-category{font-size:11px;font-weight:600;color:#6b7280;text-transform:uppercase;margin-bottom:4px}.item-title{font-size:14px;font-weight:600;color:#1f2937}.item-thumbnail{width:70px;height:70px;border-radius:12px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:32px;margin-left:12px}.math-thumb{background:linear-gradient(135deg,#dbeafe,#bfdbfe)}.science-thumb{background:linear-gradient(135deg,#e0e7ff,#c7d2fe)}.english-thumb{background:linear-gradient(135deg,#fee2e2,#fecaca)}.art-thumb{background:linear-gradient(135deg,#fce7f3,#fbcfe8)}.quick-actions-widget{background:linear-gradient(135deg,#06b6d4,#0891b2);padding:16px;display:flex;gap:12px}.quick-action{background:#fffffff2;border-radius:50%;width:64px;height:64px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:transform .2s ease}.howto-widget{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#fff;padding:24px}.battery-widget{background:linear-gradient(135deg,#a5b4fc,#818cf8);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px}.course-header{text-align:center;padding:24px 0}.course-icon{font-size:64px;margin-bottom:16px;animation:float 3s ease-in-out infinite}.course-title{font-size:28px;font-weight:800;color:#1f2937;margin-bottom:8px}.course-description{color:#6b7280;margin-bottom:24px}.course-stats{display:flex;justify-content:center;gap:24px;margin-bottom:32px}.stat-value{font-size:24px;font-weight:700;color:#1f2937}.stat-label{font-size:12px;color:#6b7280;font-weight:600;text-transform:uppercase}.lesson-card{background:#fff;border-radius:20px;padding:16px;display:flex;gap:16px;margin-bottom:16px;box-shadow:0 4px 12px #0000000d;cursor:pointer;transition:transform .2s}.lesson-card:hover{transform:translateY(-2px);box-shadow:0 8px 16px #0000001a}.lesson-icon{width:60px;height:60px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:28px;color:#fff;flex-shrink:0}.lesson-content{flex:1}.lesson-meta{display:flex;justify-content:space-between;align-items:center;margin-top:8px;font-size:13px;color:#6b7280}.lesson-status{color:#3b82f6;font-weight:600}.navbar{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;background:#ffffffe6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);position:sticky;top:0;z-index:50}.back-btn{border:none;background:none;font-size:16px;font-weight:600;color:#4b5563;cursor:pointer}.nav-title{font-size:18px;font-weight:700;color:#1f2937}.content-container{background:#fff;border-radius:24px;padding:24px;margin-bottom:80px;min-height:400px}.content-title{font-size:24px;font-weight:800;margin-bottom:16px;color:#1f2937}.content-body h3{font-size:20px;margin:24px 0 12px;color:#374151}.content-body p{margin-bottom:16px;line-height:1.6;color:#4b5563}.example-box{background:#f3f4f6;padding:20px;border-radius:16px;margin:16px 0;border-left:4px solid #3B82F6}.content-actions{position:fixed;bottom:0;left:0;right:0;padding:20px;background:#fff;box-shadow:0 -4px 12px #0000000d;display:flex;gap:12px;justify-content:center}.content-btn{padding:12px 24px;border-radius:12px;font-weight:600;border:none;cursor:pointer;font-size:15px}.btn-primary{background:#3b82f6;color:#fff;flex:2}.btn-secondary{background:#f3f4f6;color:#4b5563;flex:1}.quiz-container{padding-bottom:80px}.quiz-header{margin-bottom:24px}.quiz-progress{display:flex;justify-content:space-between;margin-bottom:8px;font-size:14px;font-weight:600;color:#6b7280}.progress-bar-quiz{height:8px;background:#e5e7eb;border-radius:4px;overflow:hidden}.progress-fill{height:100%;background:#10b981;transition:width .3s ease}.question-card{background:#fff;border-radius:24px;padding:24px;box-shadow:0 4px 12px #0000000d}.question-text{font-size:20px;font-weight:700;color:#1f2937;margin-bottom:24px;text-align:center}.answers-grid{display:grid;gap:12px}.answer-btn{padding:16px;border:2px solid #E5E7EB;border-radius:16px;background:#fff;font-size:16px;font-weight:600;color:#4b5563;cursor:pointer;transition:all .2s;text-align:left}.answer-btn:hover{border-color:#3b82f6;background:#eff6ff}.settings-overlay{position:fixed;inset:0;background:#00000080;z-index:2000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);animation:fadeIn .2s ease}.settings-sidebar{position:fixed;top:0;left:0;bottom:0;width:80%;background:#f2f2f7;z-index:2001;overflow-y:auto;box-shadow:4px 0 24px #00000026;transform:translate(-100%);animation:slideIn .3s cubic-bezier(.16,1,.3,1) forwards}.settings-close-btn{position:absolute;top:15px;right:15px;width:32px;height:32px;background:#e5e5ea;border-radius:50%;display:flex;align-items:center;justify-content:center;border:none;cursor:pointer;z-index:10;font-size:14px;color:#8e8e93}.settings-sidebar .ios-settings-page{min-height:auto;padding-top:60px}.answer-btn.selected{border-color:#3b82f6;background:#eff6ff;color:#3b82f6}.answer-btn.correct{border-color:#10b981;background:#ecfdf5;color:#047857}.answer-btn.incorrect{border-color:#ef4444;background:#fef2f2;color:#b91c1c}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.profile-bar{display:flex;justify-content:space-between;align-items:center;padding:10px 0 24px}.profile-info{display:flex;align-items:center;gap:16px}.profile-avatar{width:60px;height:60px;border-radius:50%;background:linear-gradient(135deg,#7c3aed,#c4b5fd);display:flex;align-items:center;justify-content:center;font-size:32px;box-shadow:0 4px 10px #7c3aed4d}.profile-details{display:flex;flex-direction:column;align-items:flex-start}.profile-name{font-size:20px;font-weight:800;color:#1f2937;line-height:1.2}.profile-greeting{font-size:14px;color:#6b7280;font-weight:500}.logout-btn{padding:10px 24px;border:2px solid #EF4444;background:#fef2f2;color:#ef4444;border-radius:9999px;font-weight:700;font-size:14px;cursor:pointer;transition:all .2s}.logout-btn:hover{background:#fee2e2;transform:translateY(-2px)}.progress-bar{height:6px;background:#e5e7eb;border-radius:3px;overflow:hidden;margin-bottom:4px}.progress-percent{font-size:11px;font-weight:600;color:#6b7280;float:right}.menu-overlay{position:fixed;inset:0;background:#00000080;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);animation:fadeIn .2s ease}.side-menu{position:fixed;top:0;left:0;bottom:0;width:80%;background:#fff;z-index:1001;padding:24px;overflow-y:auto;box-shadow:4px 0 24px #00000026;transform:translate(-100%);animation:slideIn .3s cubic-bezier(.16,1,.3,1) forwards;display:flex;flex-direction:column}.side-menu.open{transform:translate(0)}@keyframes slideIn{to{transform:translate(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.menu-item{display:flex;align-items:center;padding:16px;border-radius:12px;color:#4b5563;font-weight:600;margin-bottom:8px;cursor:pointer;transition:all .2s}.menu-item:hover,.menu-item.active{background:#eff6ff;color:#3b82f6}.menu-icon{font-size:20px;width:32px;display:flex;justify-content:center;margin-right:12px}.activity-card{background:linear-gradient(135deg,#f8fafc,#eff6ff);border-radius:20px;padding:20px;margin:24px 0;border:1px solid #E0F2FE}.chart-bar{width:6px;background:#bfdbfe;border-radius:3px;position:relative}.chart-bar.active{background:#3b82f6}.menu-btn{background:#fff;border:1px solid #E5E7EB;width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 2px 5px #0000000d;transition:all .2s;flex-shrink:0}.ios-settings-page{background-color:#f2f2f7;min-height:100vh;padding:20px 20px 100px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;text-align:left}.ios-header{font-size:34px;font-weight:700;margin-bottom:16px;color:#000;margin-top:10px}.ios-search-bar{background:#e3e3e8;border-radius:10px;padding:10px 12px;display:flex;align-items:center;gap:8px;margin-bottom:24px;margin-top:-10px;color:#8e8e93;font-size:17px}.ios-group{background:#fff;border-radius:10px;overflow:hidden;margin-bottom:20px}.ios-item{display:flex;align-items:center;padding:11px 16px;background:#fff;cursor:pointer;position:relative;min-height:48px}.ios-item:active{background-color:#e5e5ea}.ios-item:not(:last-child):after{content:"";position:absolute;bottom:0;left:60px;right:0;height:1px;background-color:#c6c6c8;transform:scaleY(.5)}.ios-icon-box{width:29px;height:29px;border-radius:7px;display:flex;align-items:center;justify-content:center;margin-right:14px;color:#fff;font-size:16px;flex-shrink:0}.ios-label{flex:1;font-size:17px;color:#000;letter-spacing:-.2px}.ios-chevron{color:#c7c7cc;font-size:14px;font-weight:600;margin-left:8px}.ios-value{color:#8e8e93;font-size:17px}.ios-switch{width:51px;height:31px;background-color:#e9e9ea;border-radius:15.5px;position:relative;transition:background-color .2s}.ios-switch.on{background-color:#34c759}.ios-switch:after{content:"";width:27px;height:27px;background:#fff;border-radius:50%;position:absolute;top:2px;left:2px;box-shadow:0 3px 8px #00000026;transition:transform .2s}.ios-switch.on:after{transform:translate(20px)}.ios-badge{background:#ff3b30;color:#fff;font-size:14px;font-weight:500;width:20px;height:20px;border-radius:50%;display:flex;align-items:center;justify-content:center}.ios-profile-card{display:flex;align-items:center;padding:12px 16px}.ios-profile-avatar{width:60px;height:60px;border-radius:50%;background:#f2f2f7;display:flex;align-items:center;justify-content:center;font-size:30px;margin-right:16px}.ios-profile-text h2{font-size:20px;font-weight:400;margin:0 0 2px;color:#000}.ios-profile-text p{font-size:13px;color:#8e8e93;margin:0}