.dashboard-upload-area{display:flex;flex-direction:column;gap:var(--space-5)}.upload-card-header{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--space-3);flex-wrap:wrap}.upload-billing-note{display:flex;align-items:center;gap:var(--space-2);font-size:.8125rem;color:var(--color-status-processing-text);margin-top:var(--space-2);padding:var(--space-2) var(--space-3);background:var(--color-status-processing-bg);border-radius:var(--radius-sm)}.billing-icon{display:inline-flex;flex-shrink:0}.file-info{padding:var(--space-4);background:var(--color-bg-light);border-radius:var(--radius-md);margin-top:var(--space-3);border:1px solid var(--color-border);transition:background-color .2s ease,border-color .2s 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var(--color-border)}.transaction-info{flex:1;min-width:0}.transaction-type{font-weight:500;color:var(--color-text);display:block;font-size:.875rem}.transaction-description{font-size:.8125rem;color:var(--color-text-secondary);display:block;margin-top:2px}.transaction-amount{font-weight:600;flex-shrink:0;font-size:.875rem}.transaction-amount.deposit{color:var(--color-danger)}.transaction-amount.usage{color:var(--color-primary)}.transaction-amount.refund,.transaction-amount.purchase,.transaction-amount.reward,.transaction-amount.monthly_refresh{color:var(--color-success)}.billing-note{background:var(--color-status-pending-bg);border-radius:var(--radius-md);padding:var(--space-4);text-align:left}.billing-note p{margin:0 0 var(--space-2) 0;color:var(--color-status-pending-text);font-size:.875rem;display:flex;align-items:center;gap:var(--space-2)}.billing-note ul{margin:0;padding-left:var(--space-5);color:var(--color-status-pending-text);font-size:.8125rem}.billing-note 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.clear-filters-btn:hover{background:var(--color-bg-light);border-color:var(--color-text-muted);color:var(--color-text)}.usage-history-page .transactions-section{background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--color-border);overflow:hidden}.usage-history-page .section-header{display:flex;justify-content:space-between;align-items:center;gap:var(--space-3);padding:var(--space-4) var(--space-5);border-bottom:1px solid var(--color-border);background:var(--color-bg-light);flex-wrap:wrap}.usage-history-page .section-title{margin:0;font-size:1.125rem;font-weight:600;color:var(--color-text)}.usage-history-page .table-controls{display:flex;align-items:center;gap:var(--space-4);flex-wrap:wrap}.usage-history-page .download-btn{display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-2) 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var(--space-5);background:var(--color-bg-light);border-radius:var(--radius-md);border:1px solid var(--color-border)}.membership-page .balance-label{color:var(--color-text-body);font-weight:500}.membership-page .balance-amount{font-size:1.4rem;font-weight:700;color:var(--color-primary)}.membership-page .pricing-info{display:flex;gap:var(--space-4);margin-bottom:var(--space-6)}.membership-page .pricing-info-item{flex:1;display:flex;align-items:flex-start;gap:var(--space-3);padding:var(--space-4);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm)}.membership-page .pricing-icon{flex-shrink:0;margin-top:2px}.membership-page .pricing-info-item strong{display:block;font-size:.9rem;color:var(--color-text);margin-bottom:4px}.membership-page .pricing-info-item p{margin:0;font-size:.85rem;color:var(--color-text-secondary)}.membership-page 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4px 14px #f9731640}.membership-page .card-badge{position:absolute;top:-10px;right:var(--space-3);background:var(--color-cta);color:#fff;font-size:.7rem;font-weight:600;padding:3px var(--space-3);border-radius:var(--radius-full)}.membership-page .card-amount{font-size:2.25rem;font-weight:700;color:var(--color-text);line-height:1}.membership-page .card-unit{font-size:.9rem;color:var(--color-text-secondary);margin-top:4px}.membership-page .card-discount{display:inline-block;margin-top:var(--space-2);padding:2px var(--space-3);background:var(--color-warning);color:#fff;font-size:.75rem;font-weight:700;border-radius:var(--radius-full)}.membership-page .card-price{font-size:1rem;font-weight:600;color:var(--color-primary);margin-top:var(--space-3);padding-top:var(--space-3);border-top:1px solid var(--color-border);width:100%;text-align:center}.membership-page .card-price-original{text-decoration:line-through;color:var(--color-text-muted);font-weight:400;font-size:.85rem;margin-right:4px}.membership-page .custom-amount-section{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-5);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);margin-bottom:var(--space-6)}.membership-page .custom-label{font-weight:500;color:var(--color-text-body);white-space:nowrap}.membership-page .custom-input-group{display:flex;align-items:center;gap:var(--space-3)}.membership-page .custom-input{width:120px;padding:var(--space-2) var(--space-3);background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:1rem;color:var(--color-text);text-align:center}.membership-page .custom-input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #3a9bd526}.membership-page .custom-suffix{color:var(--color-text-secondary);font-size:.9rem;white-space:nowrap}.membership-page #custom-discount-hint{color:var(--color-warning);font-weight:700}.membership-page #coupon-message:empty{display:none}.membership-page .purchase-action{text-align:center}.membership-page .btn-purchase{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:14px var(--space-7);background:var(--color-cta);color:#fff;border:none;border-radius:var(--radius-sm);font-size:1.05rem;font-weight:600;cursor:pointer;transition:background-color .2s ease,box-shadow .2s ease;box-shadow:var(--shadow-sm)}.membership-page .btn-purchase:hover:not(:disabled){background:var(--color-cta-hover);box-shadow:var(--shadow-md)}.membership-page .btn-purchase:disabled{background:var(--color-neutral-bg);color:var(--color-neutral-text);cursor:not-allowed;box-shadow:none}.membership-page .purchase-note{margin-top:var(--space-4);font-size:.85rem;color:var(--color-text-secondary)}@media (max-width: 768px){.membership-page .page-header{flex-direction:column;gap:var(--space-4);text-align:center}.membership-page .pricing-info{flex-direction:column}.membership-page .purchase-cards{grid-template-columns:repeat(2,1fr)}.membership-page .custom-amount-section{flex-direction:column;align-items:stretch}.membership-page .custom-input-group{justify-content:center}}.question-bank-page{background:var(--color-bg-page)}.question-bank-page .question-bank-header{text-align:center;margin-bottom:var(--space-6)}.question-bank-page .question-bank-header .page-title{color:var(--color-text);font-size:2rem;font-weight:700;margin-bottom:var(--space-2)}.question-bank-page .question-bank-header .page-description{color:var(--color-text-secondary);font-size:1.0625rem;margin:0}.question-bank-page .qb-bento-grid{display:flex;flex-direction:column;gap:var(--space-5)}.question-bank-page .qb-hero-card{background:var(--color-surface);border:1px solid 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.qb-feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:var(--space-4)}.question-bank-page .qb-feature-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);padding:var(--space-5) var(--space-4);display:flex;flex-direction:column;align-items:center;text-align:center;gap:var(--space-3);transition:box-shadow .2s ease,border-color .2s ease}.question-bank-page .qb-feature-card:hover{box-shadow:var(--shadow-md);border-color:var(--color-primary-light)}.question-bank-page .qb-feature-icon-wrap{width:44px;height:44px;border-radius:var(--radius-full);background:var(--color-bg-light);display:flex;align-items:center;justify-content:center;flex-shrink:0}.question-bank-page .qb-feature-label{color:var(--color-text-body);font-size:.875rem;font-weight:500;line-height:1.4}.question-bank-page .qb-main-tabs{margin-bottom:var(--space-5)}.question-bank-page 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ease}.bank-table-row:hover{background:var(--color-bg-light)}.bank-table-preview{max-width:360px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.bank-filter-tabs{display:flex;gap:var(--space-2);flex-wrap:wrap}.bank-filter-tab{padding:var(--space-2) var(--space-4);border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text-body);border-radius:var(--radius-full);font-size:.875rem;font-weight:500;cursor:pointer;transition:background-color .2s ease,border-color .2s ease,color .2s ease}.bank-filter-tab:hover{background:var(--color-bg-light)}.bank-filter-tab.active{background:var(--color-primary);border-color:var(--color-primary);color:#fff}@media (max-width: 1023px){.tutor-container,.tutor-thread-container,.bank-container{padding:0 var(--space-4)}}@media (max-width: 639px){.tutor-main{padding:var(--space-4) 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p{margin:0;font-size:.875rem;opacity:.8}.terms-main{min-height:calc(100vh - 140px);padding:var(--space-6) var(--space-4);background:var(--color-bg-page)}.terms-container{max-width:760px;margin:0 auto}.terms-header{text-align:center;margin-bottom:var(--space-6)}.terms-header-icon{display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;margin-bottom:var(--space-3);border-radius:var(--radius-full);background:color-mix(in srgb,var(--color-primary) 12%,transparent)}.terms-title{font-size:2rem;font-weight:700;color:var(--color-text-dark);margin:0 0 var(--space-2) 0}.terms-subtitle{font-size:.95rem;color:var(--color-text-muted);margin:0}.terms-content{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-7) 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.btn-purchase:disabled{background:var(--color-neutral-bg);color:var(--color-neutral-text);cursor:not-allowed;box-shadow:none}.pricing-page .purchase-note{margin-top:var(--space-4);font-size:.85rem;color:var(--color-text-secondary)}.pricing-login-container{display:flex;justify-content:center;min-width:200px}.pricing-notes{background:var(--color-surface);border-radius:var(--radius-lg);padding:var(--space-5) var(--space-6);border:1px solid var(--color-border);box-shadow:var(--shadow-sm)}.pricing-notes p{margin:0 0 var(--space-3) 0;font-size:.9rem;color:var(--color-text-body);display:flex;align-items:center;gap:var(--space-2)}.pricing-notes p:last-child{margin-bottom:0}.pricing-notes a{color:var(--color-primary);text-decoration:none;cursor:pointer}.pricing-notes a:hover{text-decoration:underline}@media (max-width: 768px){.pricing-page-header{padding:var(--space-5)}.pricing-page-title{font-size:1.5rem}.pricing-page .pricing-info{grid-template-columns:1fr}.pricing-page 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th:first-child{border-top-left-radius:var(--radius-md)}.developer-page .keys-table thead th:last-child{border-top-right-radius:var(--radius-md)}.developer-page .keys-table tbody tr{transition:background .15s ease}.developer-page .keys-table tbody tr:hover{background:var(--color-neutral-bg)}.developer-page .keys-table tbody tr:last-child td{border-bottom:none}.developer-page .keys-table code{background:var(--color-neutral-bg);color:var(--color-text)}.developer-page .revoked-badge{background:var(--color-neutral-bg);color:var(--color-text-secondary)}.developer-page .docs-chip{background:var(--color-neutral-bg);border-color:transparent;color:var(--color-text-secondary);transition:background .2s ease,color .2s ease}.developer-page .docs-chip:hover{background:var(--color-neutral-bg);background:color-mix(in srgb,var(--color-primary) 12%,var(--color-neutral-bg));color:var(--color-text)}.developer-page .docs-chip.active{background:var(--color-primary);color:#fff}.developer-page 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