:root{--color-primary:#06c;--color-primary-focus:#0071e3;--color-primary-on-dark:#2997ff;--color-canvas:#fff;--color-canvas-parchment:#f5f5f7;--color-surface-pearl:#fafafc;--color-surface-tile-1:#272729;--color-surface-tile-2:#2a2a2c;--color-surface-tile-3:#252527;--color-surface-black:#000;--color-surface-chip-translucent:#d2d2d7;--color-ink:#1d1d1f;--color-body:#1d1d1f;--color-body-on-dark:#fff;--color-body-muted:#ccc;--color-ink-muted-80:#333;--color-ink-muted-48:#7a7a7a;--color-on-primary:#fff;--color-on-dark:#fff;--color-divider-soft:#f0f0f0;--color-hairline:#e0e0e0;--font-display:"SF Pro Display", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-text:"SF Pro Text", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", 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img{object-fit:cover;width:100%;height:100%;transition:opacity .3s}.carousel-btn{color:#fff;cursor:pointer;width:36px;height:36px;transition:background var(--transition-fast);z-index:2;-webkit-backdrop-filter:blur(4px);background:#00000059;border:none;border-radius:50%;justify-content:center;align-items:center;font-size:22px;line-height:1;display:flex;position:absolute;top:50%;transform:translateY(-50%)}.carousel-btn:hover{background:#0000008c}.carousel-btn:active{transform:translateY(-50%)scale(.92)}.carousel-prev{left:12px}.carousel-next{right:12px}.carousel-counter{color:#fff;border-radius:var(--rounded-pill);font-size:12px;font-family:var(--font-text);font-weight:var(--weight-medium);z-index:2;-webkit-backdrop-filter:blur(4px);background:#00000073;padding:4px 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solid var(--color-hairline)}@media (width>=834px){.seller-card{max-width:600px;margin:var(--spacing-lg) auto}}.seller-header{margin-bottom:var(--spacing-lg);justify-content:space-between;align-items:center;display:flex}.seller-avatar{border-radius:var(--rounded-full);width:50px;height:50px;margin-right:var(--spacing-sm)}.seller-info{flex-direction:column;flex:1;align-items:flex-start;display:flex}.seller-name{font-family:var(--font-text);font-size:var(--text-body);font-weight:var(--weight-semibold)}.seller-shop{font-family:var(--font-text);font-size:var(--text-fine-print);color:var(--color-ink-muted-48)}.seller-campus{font-family:var(--font-text);font-size:var(--text-fine-print);color:var(--color-ink-muted-48);margin-top:2px}.seller-actions{gap:var(--spacing-xs);display:flex}.seller-actions .edit-btn{padding:6px var(--spacing-sm);background:var(--color-primary);color:var(--color-on-primary);border-radius:var(--rounded-sm);font-family:var(--font-text);font-size:var(--text-caption);cursor:pointer;transition:transform var(--transition-fast);border:none}.seller-actions .edit-btn:active{transform:scale(.95)}.seller-actions .delete-btn{padding:6px var(--spacing-sm);color:var(--color-on-primary);border-radius:var(--rounded-sm);font-family:var(--font-text);font-size:var(--text-caption);cursor:pointer;transition:transform var(--transition-fast);background:#dc3545;border:none}.seller-actions .delete-btn:active{transform:scale(.95)}.contact-info{gap:var(--spacing-xs);flex-direction:column;display:flex}.contact-login-prompt{padding:var(--spacing-md);text-align:center;flex-direction:column;align-items:center;display:flex}.contact-login-prompt p{color:var(--color-ink-muted-48);font-family:var(--font-text);font-size:var(--text-body);margin-bottom:var(--spacing-sm)}.contact-login-prompt 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var(--transition-fast);border:none;flex:1}.action-btn:active{transform:scale(.95)}.shop-btn,.like-btn{background:var(--color-canvas);color:var(--color-primary);border:1px solid var(--color-primary)}.like-btn.liked{background:var(--color-primary);color:var(--color-on-primary)}.like-btn:disabled{opacity:.8;cursor:not-allowed}.contact-btn{background:var(--color-primary);color:var(--color-on-primary)}.contact-btn.contacted{background:var(--color-ink-muted-48);color:var(--color-canvas)}.contact-btn:disabled{opacity:.8;cursor:not-allowed}.comments-section{background:var(--color-canvas);padding:var(--spacing-lg);margin:var(--spacing-sm);border-radius:var(--rounded-lg);border:1px solid var(--color-hairline)}@media (width>=834px){.comments-section{max-width:600px;margin:var(--spacing-lg) auto}}.comments-title{font-family:var(--font-display);font-size:var(--text-body);font-weight:var(--weight-semibold);margin-bottom:var(--spacing-sm)}.no-comments{text-align:center;color:var(--color-ink-muted-48);font-family:var(--font-text);font-size:var(--text-caption);padding:var(--spacing-lg)}.comment-form{gap:var(--spacing-xs);margin-top:var(--spacing-lg);display:flex}.comment-input{padding:10px var(--spacing-sm);border:1px solid var(--color-hairline);border-radius:var(--rounded-sm);font-family:var(--font-text);font-size:var(--text-body);background:var(--color-canvas);flex:1}.comment-input:focus{outline:2px solid var(--color-primary-focus);border-color:#0000}.comment-btn{padding:10px var(--spacing-lg);background:var(--color-primary);color:var(--color-on-primary);border-radius:var(--rounded-sm);font-family:var(--font-text);font-size:var(--text-caption);cursor:pointer;transition:transform var(--transition-fast);border:none}.comment-btn:active{transform:scale(.95)}.comment-btn:disabled{background:var(--color-ink-muted-48);cursor:not-allowed}.login-tip{justify-content:center;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-lg);color:var(--color-ink-muted-48);font-family:var(--font-text);font-size:var(--text-caption);display:flex}.login-tip button{color:var(--color-primary);cursor:pointer;background:0 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32px}.closed-back-btn:active{transform:scale(.95)}.profile-page{background:var(--color-canvas-parchment);min-height:100vh}.profile-header{padding:var(--spacing-md) var(--spacing-lg);background:var(--color-surface-black);justify-content:space-between;align-items:center;display:flex}@media (width>=834px){.profile-page .page-header:not(.profile-header){display:none}.profile-header{background:var(--color-canvas);margin:var(--spacing-xl) var(--spacing-xl) 0;padding:var(--spacing-xl);border-radius:var(--rounded-lg);border:1px solid var(--color-hairline)}.profile-header 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