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20px}.hero-title{font-size:var(--font-size-2xl)}}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--color-neutral-300);border-radius:99px}.topbar-fixed{position:fixed;top:0;left:0;right:0;height:56px;z-index:300;display:flex;align-items:center;justify-content:space-between;padding:0 16px;background:#f8f9fad1;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--color-neutral-200);transition:all var(--duration-normal) var(--ease-default)}.topbar-left,.topbar-right{display:flex;align-items:center;gap:8px}.topbar-product-name{font-family:var(--font-family-display);font-size:15px;font-weight:600;color:var(--color-neutral-900);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:200px}.topbar-icon-btn{width:36px;height:36px;border-radius:var(--radius-full);border:none;background:#ffffffd9;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--duration-fast) var(--ease-default);color:var(--color-neutral-800)}.topbar-icon-btn:hover{background:#fff;transform:scale(1.05)}.topbar-icon-btn svg{width:20px;height:20px}.gallery{position:relative;width:100%;height:40vh;min-height:260px;max-height:420px;background:linear-gradient(135deg,var(--color-primary-100),var(--color-secondary-200));overflow:hidden}.gallery-track{display:flex;width:100%;height:100%;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none}.gallery-track::-webkit-scrollbar{display:none}.gallery-slide{min-width:100%;height:100%;scroll-snap-align:start;display:flex;align-items:center;justify-content:center;position:relative;-webkit-user-select:none;user-select:none;font-size:80px}.gallery-overlay-top{position:absolute;top:0;left:0;right:0;display:flex;justify-content:space-between;align-items:flex-start;padding:12px 16px;z-index:10}.gallery-overlay-bottom{position:absolute;bottom:0;left:0;right:0;display:flex;justify-content:space-between;align-items:flex-end;padding:12px 16px;z-index:10}.gallery-counter{font-size:11px;color:#ffffffe6;font-family:var(--font-family-mono);background:#0006;padding:3px 10px;border-radius:var(--radius-full);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}.gal-btn{width:36px;height:36px;border-radius:var(--radius-full);border:none;background:#0000004d;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;cursor:pointer;color:#fff;transition:all var(--duration-fast) var(--ease-default)}.gal-btn:hover{background:#00000080}.gal-btn.fav-active{background:var(--color-accent-500)}.section-block{opacity:0;transform:translateY(16px);animation:fadeUp var(--duration-slower) var(--ease-default) forwards;margin-bottom:12px}.section-block:nth-child(1){animation-delay:0s}.section-block:nth-child(2){animation-delay:.05s}.section-block:nth-child(3){animation-delay:.1s}.section-block:nth-child(4){animation-delay:.15s}.section-block:nth-child(5){animation-delay:.2s}@keyframes fadeUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.product-name{font-family:var(--font-family-display);font-size:20px;font-weight:600;color:var(--color-neutral-900);line-height:1.35;margin-top:16px;margin-bottom:12px}.price-row{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;margin-bottom:6px}.price-current{font-size:24px;font-weight:700;color:var(--color-price);line-height:1}.price-original{font-size:14px;color:var(--color-neutral-500);text-decoration:line-through}.price-save-tag{font-size:11px;font-weight:600;color:#fff;background:var(--color-success-500);padding:2px 8px;border-radius:var(--radius-full)}.trade-tags{display:flex;gap:8px;margin-bottom:16px}.trade-tag{display:inline-flex;align-items:center;gap:5px;height:30px;padding:0 14px;border-radius:var(--radius-full);font-size:12px;font-weight:600}.tag-condition-new{background:var(--color-primary-50);color:var(--color-primary-600)}.tag-can-trade{background:#e3f2fd;color:var(--color-info-500)}.tag-urgent{background:var(--color-accent-50);color:var(--color-accent-600)}.alert-banner{display:flex;align-items:center;gap:8px;padding:10px 14px;border-radius:var(--radius-md);font-size:13px;font-weight:500;margin-top:16px}.alert-warning{background:#fff8e1;color:#8b6914;border:1px solid #FFE082}.alert-info{background:linear-gradient(135deg,#fff8e1,#ffecb3);border:1px solid #FFD54F;font-size:13px;color:#8b6914}.alert-danger{background:var(--color-accent-50);color:var(--color-accent-700);border:1px solid var(--color-accent-200)}.card-section-title{font-family:var(--font-family-display);font-size:17px;font-weight:600;color:var(--color-neutral-900);display:flex;align-items:center;gap:8px;margin-bottom:14px}.info-row{display:flex;align-items:center;padding:10px 0;border-bottom:1px solid var(--color-neutral-100);font-size:14px}.info-row:last-child{border-bottom:none}.info-label{width:80px;flex-shrink:0;color:var(--color-neutral-500);font-weight:500}.info-value{color:var(--color-neutral-800);font-weight:400}.seller-card{display:flex;align-items:center;gap:14px;padding:16px;background:var(--color-neutral-50);border-radius:var(--radius-md);cursor:pointer;transition:all var(--duration-fast) ease}.seller-card:hover{background:var(--color-neutral-100)}.seller-avatar{width:48px;height:48px;border-radius:99px;background:var(--color-secondary-200);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}.seller-info{flex:1}.seller-name{font-weight:600;font-size:15px;color:var(--color-neutral-900)}.seller-meta{font-size:12px;color:var(--color-neutral-500);margin-top:2px}.seller-rating{display:flex;align-items:center;gap:4px;margin-top:4px}.star{color:#f9a825;font-size:14px}.star.empty{color:var(--color-neutral-300)}.desc-text{font-size:14px;color:var(--color-neutral-700);line-height:1.8;padding:12px 0}.action-bar{position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--color-neutral-200);padding:12px 16px;display:flex;gap:10px;z-index:200}.btn-action{flex:1;height:44px;border:none;border-radius:var(--radius-md);font-size:15px;font-weight:600;font-family:var(--font-family-body);cursor:pointer;display:flex;align-items:center;justify-content:center;gap:6px;transition:all var(--duration-fast) ease}.btn-chat{background:var(--color-primary-50);color:var(--color-primary-600)}.btn-chat:hover{background:var(--color-primary-100)}.btn-buy{background:var(--color-accent-500);color:#fff;box-shadow:0 4px 12px #e76f514d}.btn-buy:hover{background:var(--color-accent-600);transform:translateY(-1px)}.back-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--color-neutral-600);text-decoration:none;margin-top:24px;cursor:pointer;transition:color var(--duration-fast) ease}.back-link:hover{color:var(--color-primary-500)}.filter-bar{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.filter-tag{padding:6px 14px;border-radius:var(--radius-full);font-size:var(--font-size-xs);font-weight:500;cursor:pointer;transition:all var(--duration-fast) ease;white-space:nowrap;-webkit-user-select:none;user-select:none;background:var(--color-neutral-100);color:var(--color-neutral-700);border:none}.filter-tag.active{background:var(--color-primary-500);color:#fff}.filter-tag:hover:not(.active){background:var(--color-neutral-200)}.barter-badge{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;background:linear-gradient(135deg,var(--color-secondary-100),var(--color-primary-100));border-radius:var(--radius-full);font-size:11px;font-weight:600;color:var(--color-primary-700)}.price-range{font-size:15px;font-weight:600;color:var(--color-price)}@media (min-width:768px){.content-detail{padding:0 32px}.gallery{max-width:800px;margin:0 auto;border-radius:0 0 var(--radius-xl) var(--radius-xl);overflow:hidden}}@media (max-width:768px){.gallery{height:35vh;min-height:220px}.product-name{font-size:18px}.price-current{font-size:22px}.action-bar{padding-bottom:calc(12px + env(safe-area-inset-bottom,0px))}}