:root{--color-bg-primary: #F8F9F8;--color-bg-secondary: #FFFFFF;--color-bg-tertiary: #E5E9F0;--color-text-primary: #2B3648;--color-text-secondary: #4B5563;--color-text-tertiary: #9CA3AF;--color-accent-primary: #1CB0F6;--color-accent-secondary: #009DE0;--color-accent-light: #DDF4FF;--color-accent-shadow: #1899D6;--color-success: #58CC02;--color-success-light: #D7FFB8;--color-success-shadow: #58A700;--color-warning: #FFC800;--color-warning-light: #FFF4CC;--color-warning-shadow: #DCA900;--color-error: #FF4B4B;--color-error-light: #FFD4D4;--color-error-shadow: #EA2B2B;--color-border: #E5E7EB;--color-border-light: #F3F4F6;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--spacing-3xl: 4rem;--radius-sm: .5rem;--radius-md: .75rem;--radius-lg: 1rem;--radius-xl: 1.5rem;--radius-full: 9999px;--shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 12px rgba(0, 0, 0, .05);--shadow-lg: 0 12px 24px rgba(0, 0, 0, .08);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1);--shadow-btn-primary: 0 4px 0 var(--color-accent-shadow);--shadow-btn-secondary: 0 4px 0 var(--color-border);--font-main: "Space Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 1.875rem;--font-size-4xl: 2.25rem;--font-weight-normal: 400;--font-weight-medium: 600;--font-weight-semibold: 700;--font-weight-bold: 800;--font-weight-extrabold: 900;--line-height-tight: 1.25;--line-height-normal: 1.5;--line-height-relaxed: 1.75;--transition-fast: .1s cubic-bezier(.4, 0, .2, 1);--transition-base: .2s cubic-bezier(.4, 0, .2, 1);--transition-slow: .35s cubic-bezier(.4, 0, .2, 1);--z-dropdown: 100;--z-sticky: 200;--z-fixed: 300;--z-modal: 400;--z-popover: 500;--z-tooltip: 600;--max-width-container: 1200px;--mobile-nav-height: 64px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-main);font-size:var(--font-size-base);font-weight:var(--font-weight-normal);line-height:var(--line-height-normal);color:var(--color-text-primary);background-color:var(--color-bg-primary)}h1,h2,h3,h4,h5,h6{font-weight:var(--font-weight-bold);line-height:var(--line-height-tight);color:var(--color-text-primary);letter-spacing:-.01em}h1{font-size:var(--font-size-3xl)}h2{font-size:var(--font-size-2xl)}h3{font-size:var(--font-size-xl)}h4{font-size:var(--font-size-lg)}p{margin-bottom:var(--spacing-md)}a{color:var(--color-accent-primary);text-decoration:none;transition:color 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var(--color-border)}.btn-secondary:active:not(:disabled){transform:translateY(3px);box-shadow:0 1px 0 var(--color-border)}.btn-ghost{background-color:transparent;color:var(--color-text-secondary)}.btn-ghost:hover:not(:disabled){background-color:var(--color-bg-tertiary);color:var(--color-text-primary)}.btn-success{background-color:var(--color-success);color:#fff;border-color:var(--color-success-shadow);box-shadow:0 4px 0 var(--color-success-shadow)}.btn-success:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 5px 0 var(--color-success-shadow)}.btn-success:active:not(:disabled){transform:translateY(3px);box-shadow:0 1px 0 var(--color-success-shadow)}.card{background-color:var(--color-bg-secondary);border-radius:var(--radius-xl);padding:var(--spacing-lg);box-shadow:var(--shadow-md);border:2px solid var(--color-border-light);transition:all var(--transition-base)}.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.input{width:100%;height:52px;padding:0 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infinite;overflow:visible}@keyframes rotate-spinner{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.scanner-progress-container{width:100%;height:20px;background:#fff;border:3px solid #017232;border-radius:30px;position:relative;overflow:hidden;margin-bottom:24px;box-shadow:0 4px #017232}.scanner-progress-fill{height:100%;background-color:var(--color-success);border-radius:30px;transition:width .6s cubic-bezier(.16,1,.3,1);position:relative;box-shadow:none}.scanner-status-text{font-size:1.4rem;font-weight:var(--font-weight-extrabold);color:var(--color-text-primary);margin-bottom:24px;letter-spacing:-.02em}.scanner-metric-strip{background:#f8fafc;border-radius:12px;width:100%;display:flex;align-items:center;justify-content:center;padding:12px;gap:12px;color:var(--color-text-secondary);font-size:.75rem;font-weight:800;margin-bottom:36px;border:1px solid var(--color-border-light)}.scanner-metric-divider{width:2px;height:12px;background:var(--color-border)}.scanner-metric-item{display:flex;align-items:center;gap:6px}.scanner-cancel-btn-wrap{width:100%}.orientation-overlay-light{position:fixed;top:0;left:0;width:100%;height:100%;background-color:var(--color-bg-primary);z-index:11000;display:flex;flex-direction:column}.orientation-header{background:#fff;height:72px;display:flex;align-items:center;justify-content:center;position:relative;padding:0 16px;border-bottom:1px solid var(--color-border-light)}.orientation-back-btn{position:absolute;left:16px;background:transparent;border:none;color:var(--color-text-primary);cursor:pointer;display:flex;align-items:center;padding:8px}.orientation-header-title{font-size:1.4rem;font-weight:800;color:var(--color-text-primary);letter-spacing:-.02em}.orientation-progress-bar{background:#fff;padding:12px 16px;display:flex;gap:6px;overflow:hidden}.progress-puck{flex:1;height:6px;border-radius:10px;transition:background .4s ease}.progress-puck.active{background-color:#00a849;border:1px solid #017232}.progress-puck.pending{background-color:var(--color-border)}.orientation-body{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:space-between;padding:24px 16px;overflow-y:auto}.orientation-image-container{width:100%;max-width:500px;aspect-ratio:210 / 297;background:#121212;border-radius:16px;overflow:hidden;position:relative;box-shadow:0 10px 30px #0000000d;border:2px solid var(--color-border-light)}.orientation-image-container img{width:100%;height:100%;object-fit:contain}.orientation-tools-overlay{position:absolute;bottom:24px;left:50%;transform:translate(-50%);display:flex;background:#ffffff4d;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:100px;padding:4px;border:1px solid rgba(255,255,255,.4);box-shadow:0 8px 32px #0000001a}.orientation-tool-btn{background:transparent;border:none;color:#fff;padding:16px 20px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s}.orientation-tool-btn:hover{background:#ffffff1a}.orientation-action-row{width:100%;max-width:500px;display:flex;gap:10px;margin-top:16px;align-items:stretch}.orientation-back-action-btn{flex:1;height:72px;background:transparent;border:2px solid #C8C8CC;border-radius:40px;display:flex;align-items:center;justify-content:center;gap:8px;color:#6b7280;font-size:1rem;font-weight:700;cursor:pointer;transition:background .15s,color .15s,border-color .15s}.orientation-back-action-btn:hover{background:#f3f4f6;color:#374151;border-color:#9ca3af}.orientation-back-action-btn:active{background:#e5e7eb}.orientation-save-btn{width:100%;max-width:500px;height:72px;background:#00a849;border-radius:40px;display:flex;align-items:center;justify-content:space-between;padding:0 12px;color:#fff;font-size:1.25rem;font-weight:800;border:none;cursor:pointer;box-shadow:0 6px #017232;transition:transform .1s,box-shadow .1s}.orientation-save-btn--half{flex:1;width:auto;max-width:none}.orientation-save-btn:active{transform:translateY(3px);box-shadow:0 3px #017232}.page-circle-indicator{width:48px;height:48px;background:#efffe5;border-radius:50%;color:#017232;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.35rem;border:4px solid #017232}.save-btn-label{flex:1;text-align:center;color:#fff}.review-layout-root{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#f8f9fc;z-index:10500;display:flex;flex-direction:column}.review-carousel-container{flex:1;display:flex;overflow-x:auto;scroll-snap-type:x mandatory;padding:20px 0;gap:0;-ms-overflow-style:none;scrollbar-width:none}.review-carousel-container::-webkit-scrollbar{display:none}.review-card-wrapper{flex:0 0 100%;width:100%;display:flex;justify-content:center;scroll-snap-align:center;scroll-snap-stop:always;padding:0 16px}.review-card{width:100%;max-width:500px;background:#fff;border-radius:20px;border:1px solid rgba(0,0,0,.05);box-shadow:0 10px 40px #00000008;display:flex;flex-direction:column;overflow:hidden;position:relative;height:100%}.review-card-sticky-header{flex-shrink:0;padding:16px;background:#fff;z-index:10}.review-card-image-box{width:100%;height:200px;max-height:200px;border-radius:8px;border:3px solid #403D3D;overflow:hidden;position:relative;background:#121212;display:flex;align-items:center;justify-content:center}.review-card-image-box img{max-width:100%;max-height:100%;object-fit:contain}.review-image-expand-btn{position:absolute;top:8px;left:8px;z-index:50;width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:#0009;color:#fff;border:none;border-radius:50%;cursor:pointer;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);-webkit-tap-highlight-color:transparent;transition:background-color .2s ease}.review-image-expand-btn:hover,.review-image-expand-btn:active{background:#000000d9}.review-card-divider{height:1.5px;background:#eee;margin:0 24px;width:auto}.review-answers-scroll-area{flex:1;overflow-y:auto;padding:20px 16px 40px}.review-answers-title{font-size:1.1rem;font-weight:800;color:var(--color-text-primary);margin-bottom:12px}.verification-row{display:flex;align-items:center;gap:20px;padding:10px 16px;margin:0 -10px 4px;border-radius:12px;transition:all .2s ease;cursor:pointer}.verification-row:hover,.verification-row.focused{background:#f0f4f8;transform:translate(4px)}.q-number-label{font-size:1.1rem;font-weight:900;color:#333;width:40px;font-family:Inter,sans-serif}.bubbles-group{display:flex;flex:1;justify-content:space-between;max-width:320px}.answer-bubble{width:38px;height:38px;border-radius:50%;border:1px solid #404040;display:flex;align-items:center;justify-content:center;font-size:.95rem;font-weight:900;color:#404040;background:#fff;transition:all .2s cubic-bezier(.4,0,.2,1);cursor:pointer}.answer-bubble:hover{background:#f8f9fb;transform:translateY(-2px);box-shadow:0 4px 12px #0000000d}.answer-bubble.active{background:#333;color:#fff;border:4px solid #00F400;transform:scale(1.1);box-shadow:0 0 20px #00f4004d}.answer-bubble.correct-scanned{box-shadow:0 0 0 3px #00a84966}.student-info-strip{padding:0 20px;display:flex;align-items:center;gap:16px;margin-bottom:12px}@media(max-width:480px)and (max-height:850px){.student-info-strip{margin-top:12px!important;margin-bottom:8px!important;gap:12px}.student-main-name{font-size:1.1rem!important}.review-card-sticky-header{padding:10px!important}.review-card-image-box{height:140px!important;max-height:140px!important;border-width:2px!important}.review-card-divider{margin:0 16px!important}.review-answers-scroll-area{padding:12px 10px 30px!important}.review-answers-title{display:none}.verification-row{padding:6px 12px!important;gap:12px!important;margin-bottom:0!important}.q-number-label{font-size:.95rem!important;width:30px!important}.answer-bubble{width:34px!important;height:34px!important;font-size:.85rem!important}.answer-bubble.active{border-width:3px!important}}.script-count-badge{width:44px;height:44px;background:#efffe5;border:3px solid #017232;border-radius:50%;color:#017232;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:1.2rem}.student-text-group{flex:1}.student-main-name{font-size:1.1rem;font-weight:800;color:var(--color-text-primary);display:flex;align-items:center;gap:8px;flex-wrap:wrap}.match-badge{font-size:.65rem;font-weight:700;letter-spacing:.02em;text-transform:uppercase;padding:3px 8px;border-radius:999px;white-space:nowrap}.match-badge-found{background:#efffe5;color:#017232;border:1px solid #B7EDA0}.match-badge-new{background:#fff6e0;color:#9a6700;border:1px solid #F3D98B}.student-sub-details{font-size:.85rem;font-weight:600;color:var(--color-text-secondary)}.info-action-btn{width:40px;height:40px;border-radius:12px;border:1px solid #E0E0E0;background:transparent;display:flex;align-items:center;justify-content:center;color:var(--color-text-primary);cursor:pointer;transition:all .2s}.info-action-btn:hover{background:#f5f5f5}.bottom-review-nav{padding:16px;background:#fff;border-top:1px solid #EEEEEE;display:flex;align-items:center;gap:12px}.drop-scan-btn{width:54px;height:54px;border-radius:12px;border:2px solid #FFCDD2;background:#ffebee;display:flex;align-items:center;justify-content:center;color:#d32f2f;cursor:pointer;flex-shrink:0}.nav-btn-container{flex:1;display:flex;gap:10px}.nav-btn-main{flex:1;height:54px;border-radius:12px;border:2px solid #E0E0E0;background:#fff;font-weight:800;font-size:.95rem;color:var(--color-text-primary);display:flex;align-items:center;justify-content:center;gap:8px;cursor:pointer}.nav-btn-main.primary{background:#00a849;border-color:#00a849;color:#fff;box-shadow:0 4px #017232}.nav-btn-main.primary:active{transform:translateY(2px);box-shadow:0 2px #017232}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#0006;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:12000;display:flex;align-items:center;justify-content:center;padding:20px}.modal-card{width:100%;max-width:400px;background:#fff;border-radius:20px;padding:24px;box-shadow:0 20px 60px #0003}.modal-title{font-size:1.25rem;font-weight:800;margin-bottom:20px}.modal-input-group{margin-bottom:16px}.modal-input-group label{display:block;font-size:.75rem;font-weight:800;color:#9e9e9e;text-transform:uppercase;margin-bottom:8px}.modal-input{width:100%;height:48px;padding:0 16px;border-radius:12px;border:2px solid #EEEEEE;font-size:1rem;font-weight:700}.mapping-highlight-ring{position:absolute;border:1px solid #00FF00;border-radius:50%;pointer-events:none;background:#0f06;transform:translate(-50%,-50%);box-sizing:border-box;display:flex;align-items:center;justify-content:center;z-index:50;aspect-ratio:1 / 1;transition:all .2s ease-out}.mapping-highlight-ring.focused{border-width:2px;z-index:60}.mapping-highlight-ring:before{content:attr(data-label);color:#fff;font-size:5px;font-weight:900;text-shadow:0 1px 2px rgba(0,0,0,.8);line-height:1;display:block}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--color-bg-primary);padding:var(--spacing-lg);position:relative}.auth-page:before{content:"";position:absolute;top:0;left:0;right:0;height:6px;background:linear-gradient(90deg,var(--color-accent-primary),var(--color-success),var(--color-warning),var(--color-error));border-radius:0 0 var(--radius-full) var(--radius-full)}.auth-container{max-width:450px;width:100%;background:#fff;border-radius:var(--radius-xl);padding:var(--spacing-2xl);box-shadow:0 8px #0000000a;border:2px solid 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var(--color-border);box-shadow:0 8px 24px #0000000f;overflow:hidden;margin-top:var(--spacing-lg);margin-bottom:var(--spacing-2xl);min-height:calc(100vh - 300px)}.library-subject-row{border-bottom:1px solid var(--color-border-light);transition:all .3s ease}.library-subject-row:last-child{border-bottom:none}.library-subject-row.is-expanded{background:var(--color-bg-primary)}.subject-list-item{width:100%;display:flex;justify-content:space-between;align-items:center;padding:20px 24px;background:transparent;border:none;cursor:pointer;text-align:left}.subject-info-stack{display:flex;flex-direction:column;gap:2px}.subject-title{font-size:1.1rem;font-weight:700;color:var(--color-text-primary)}.subject-count-subtext{font-size:.8rem;font-weight:600;color:var(--color-text-tertiary)}.row-chevron{color:var(--color-text-tertiary);transition:transform .4s 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#eee;color:var(--color-navy-900);transition:all .2s ease;cursor:pointer}.nav-arrow-btn:hover:not(:disabled){background:var(--color-accent-primary);color:#fff;transform:translateY(-2px);border-color:var(--color-accent-primary)}.nav-arrow-btn:disabled{opacity:.3;cursor:not-allowed}.native-page-indicator{font-size:.9rem;font-weight:900;color:var(--color-navy-900);min-width:60px;text-align:center}.native-swipe-hint{position:absolute;bottom:12px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:6px;font-size:.7rem;font-weight:800;color:var(--color-text-tertiary);text-transform:uppercase;letter-spacing:.5px;pointer-events:none}@media(max-width:768px){.native-hifi-viewer-container{height:calc(100vh - 120px)}.native-page-slide{padding:0}.a4-page-frame{padding:var(--spacing-xl);box-shadow:none;border-radius:0}.q-txt,.q-num{font-size:1.4rem}.native-options-list{grid-template-columns:1fr;padding-left:0}.native-opt-item{padding:16px 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32px}.billing-paywall-close{position:absolute;top:16px;right:16px;background:none;border:none;cursor:pointer;color:#6b7280;display:flex}.billing-paywall-back{position:absolute;top:16px;left:20px;background:none;border:none;cursor:pointer;color:#6b7280;font-size:12px;font-weight:600;padding:0}.billing-paywall-back:hover{color:#374151}.billing-paywall-welcome-hero{margin-bottom:24px}.billing-paywall-welcome-emoji{font-size:44px;line-height:1;margin-bottom:14px}.billing-paywall-welcome-title{font-size:22px;font-weight:800;color:#111;margin:0 0 8px}.billing-paywall-welcome-sub{font-size:13px;color:#6b7280;margin:0;line-height:1.5}.billing-paywall-benefits-block{background:#f9fafb;border:1px solid #f3f4f6;border-radius:14px;padding:16px 20px;margin-bottom:20px;text-align:left}.billing-paywall-benefits-label{font-size:11px;font-weight:700;color:#9ca3af;text-transform:uppercase;letter-spacing:.06em;margin:0 0 12px}.billing-paywall-benefits{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}.billing-paywall-benefits li{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:#374151;line-height:1.4}.billing-paywall-benefit-check{flex-shrink:0;width:18px;height:18px;background:#dcfce7;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#16a34a;font-size:10px;font-weight:800;margin-top:1px}.billing-paywall-price-row{display:flex;align-items:baseline;justify-content:center;gap:4px;margin-bottom:20px;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:12px;padding:12px 24px}.billing-paywall-price-big{font-size:32px;font-weight:900;color:#16a34a;font-family:Space Grotesk,sans-serif}.billing-paywall-price-period{font-size:14px;font-weight:600;color:#4ade80}.billing-paywall-icon{width:56px;height:56px;margin:0 auto 16px;border-radius:16px;background:#f7fee7;border:1px solid #16a34a;color:#16a34a;display:flex;align-items:center;justify-content:center}.billing-paywall-icon.success{background:#eff6ff;border-color:#006aff;color:#006aff}.billing-paywall-icon.failed{background:#fff5f5;border-color:#e5484d;color:#e5484d}.billing-paywall-orb{width:56px;height:56px;margin:0 auto 16px;border-radius:50%;background:#f7f8fa;display:flex;align-items:center;justify-content:center;color:#16a34a}.billing-paywall-spin{animation:billing-spin 1s linear infinite}@keyframes billing-spin{to{transform:rotate(360deg)}}.billing-paywall-title{font-size:20px;font-weight:800;color:#111;margin:0 0 6px}.billing-paywall-subtitle{font-size:13px;color:#6b7280;margin:0 0 20px;line-height:1.5}.billing-paywall-hint{font-size:12px;color:#9ca3af;margin:0 0 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