/* ===== PRODUCT PAGE ===== */
    .product-page { padding-top: 110px; }

    /* --- Breadcrumb --- */
    .breadcrumb {
      padding: var(--sp-4) 0;
      font-size: 0.82rem;
      color: rgba(45,45,45,0.5);
    }
    .breadcrumb a { color: rgba(45,45,45,0.5); transition: color var(--duration) var(--ease-out); }
    .breadcrumb a:hover { color: var(--red); }
    .breadcrumb span { margin: 0 var(--sp-2); }

    /* --- Product Hero --- */
    .product-hero {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: var(--sp-16);
      align-items: start;
      padding-bottom: var(--sp-16);
    }

    .product-gallery {
      position: sticky;
      top: 120px;
    }

    .product-main-image {
      width: 100%;
      aspect-ratio: 1;
      background: linear-gradient(145deg, #FFF8F2, #FFF0E0);
      border-radius: var(--radius-xl);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      color: var(--orange);
      font-size: 1.1rem;
      margin-bottom: var(--sp-4);
      position: relative;
      overflow: hidden;
    }

    .product-main-image::before {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 50% 100%, rgba(232,119,34,0.06) 0%, transparent 60%);
    }

    .product-badge-overlay {
      position: absolute;
      top: var(--sp-4);
      left: var(--sp-4);
    }

    .product-thumbs {
      display: flex;
      gap: var(--sp-3);
    }

    .product-thumb {
      width: 80px;
      height: 80px;
      border-radius: var(--radius-md);
      background: var(--cream);
      border: 2px solid transparent;
      cursor: pointer;
      transition: all var(--duration) var(--ease-out);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.65rem;
      color: rgba(45,45,45,0.4);
      font-weight: 500;
    }

    .product-thumb.active,
    .product-thumb:hover {
      border-color: var(--red);
    }

    /* --- Product Info --- */
    .product-info {
      padding-top: var(--sp-4);
    }

    .product-badges {
      display: flex;
      gap: var(--sp-2);
      margin-bottom: var(--sp-4);
      flex-wrap: wrap;
    }

    .product-title {
      font-size: clamp(1.8rem, 3vw, 2.4rem);
      color: var(--red);
      margin-bottom: var(--sp-3);
    }

    .product-subtitle {
      font-size: 1.05rem;
      color: rgba(45,45,45,0.6);
      margin-bottom: var(--sp-5);
      line-height: 1.6;
    }

    .product-rating {
      display: flex;
      align-items: center;
      gap: var(--sp-3);
      margin-bottom: var(--sp-6);
      padding-bottom: var(--sp-6);
      border-bottom: 1px solid rgba(0,0,0,0.06);
    }

    .product-rating .stars { display: flex; gap: 2px; color: var(--gold); }
    .product-rating .count { font-size: 0.9rem; color: rgba(45,45,45,0.5); }
    .product-rating .score { font-weight: 700; color: var(--charcoal); font-size: 0.95rem; }

    /* --- Pricing --- */
    .product-pricing {
      margin-bottom: var(--sp-6);
    }

    .product-price {
      display: flex;
      align-items: baseline;
      gap: var(--sp-3);
    }

    .price-current {
      font-size: 2rem;
      font-weight: 800;
      color: var(--charcoal);
    }

    .price-original {
      font-size: 1.1rem;
      color: rgba(45,45,45,0.4);
      text-decoration: line-through;
    }

    .price-save {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--red);
      background: rgba(200,16,46,0.08);
      padding: 4px 10px;
      border-radius: var(--radius-pill);
    }

    .price-per {
      font-size: 0.82rem;
      color: rgba(45,45,45,0.5);
      margin-top: var(--sp-1);
    }

    /* --- Purchase Options --- */
    .purchase-options {
      display: flex;
      flex-direction: column;
      gap: var(--sp-3);
      margin-bottom: var(--sp-6);
    }

    .purchase-option {
      display: flex;
      align-items: center;
      gap: var(--sp-4);
      padding: var(--sp-4) var(--sp-5);
      border: 2px solid #E0E0E0;
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: all var(--duration) var(--ease-out);
      position: relative;
    }

    .purchase-option.selected {
      border-color: var(--red);
      background: rgba(200,16,46,0.02);
    }

    .purchase-option-radio {
      width: 20px;
      height: 20px;
      border-radius: 50%;
      border: 2px solid #D0D0D0;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      transition: all var(--duration) var(--ease-out);
    }

    .purchase-option.selected .purchase-option-radio {
      border-color: var(--red);
    }

    .purchase-option.selected .purchase-option-radio::after {
      content: '';
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--red);
    }

    .purchase-option-content { flex: 1; }
    .purchase-option-label {
      font-weight: 700;
      font-size: 0.95rem;
      color: var(--charcoal);
    }
    .purchase-option-desc {
      font-size: 0.82rem;
      color: rgba(45,45,45,0.55);
      margin-top: 2px;
    }

    .purchase-option-price {
      font-weight: 700;
      font-size: 1.05rem;
      color: var(--charcoal);
      text-align: right;
    }

    .purchase-option-price small {
      display: block;
      font-weight: 400;
      font-size: 0.75rem;
      color: rgba(45,45,45,0.4);
    }

    .purchase-option-savings {
      position: absolute;
      top: -10px;
      right: var(--sp-4);
      background: var(--red);
      color: var(--white);
      font-size: 0.7rem;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: var(--radius-pill);
      text-transform: uppercase;
    }

    /* --- Quantity & Add to Cart --- */
    .product-actions {
      display: flex;
      gap: var(--sp-4);
      align-items: center;
      margin-bottom: var(--sp-6);
    }

    .qty-selector {
      display: flex;
      align-items: center;
      border: 1.5px solid #E0E0E0;
      border-radius: var(--radius-md);
      overflow: hidden;
    }

    .qty-selector button {
      width: 44px;
      height: 44px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      color: var(--charcoal);
      transition: background var(--duration) var(--ease-out);
    }

    .qty-selector button:hover { background: var(--cream); }

    .qty-value {
      width: 44px;
      text-align: center;
      font-weight: 700;
      font-size: 0.95rem;
    }

    .add-to-cart-btn {
      flex: 1;
      padding: 14px 32px;
      background: var(--grad-brand);
      color: var(--white);
      font-size: 1rem;
      font-weight: 700;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: var(--sp-2);
      transition: all var(--duration) var(--ease-out);
      box-shadow: 0 4px 16px rgba(200,16,46,0.25);
    }

    .add-to-cart-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(200,16,46,0.35);
    }

    /* --- Trust Signals --- */
    .product-trust {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: var(--sp-3);
      padding: var(--sp-5);
      background: var(--cream);
      border-radius: var(--radius-md);
      margin-bottom: var(--sp-8);
    }

    .trust-item {
      text-align: center;
      padding: var(--sp-3);
    }

    .trust-item svg { color: var(--red); margin-bottom: var(--sp-2); }
    .trust-item strong { display: block; font-size: 0.82rem; color: var(--charcoal); }
    .trust-item span { font-size: 0.72rem; color: rgba(45,45,45,0.5); }

    /* --- Product Details Accordion --- */
    .product-details-section {
      border-top: 1px solid rgba(0,0,0,0.06);
    }

    .product-detail-toggle {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      padding: var(--sp-5) 0;
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--charcoal);
      text-align: left;
    }

    .product-detail-toggle svg {
      transition: transform var(--duration) var(--ease-out);
    }

    .product-detail-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s var(--ease-out);
    }

    .product-detail-content-inner {
      padding-bottom: var(--sp-6);
      font-size: 0.9rem;
      color: rgba(45,45,45,0.7);
      line-height: 1.7;
    }

    .product-detail-content-inner ul {
      padding-left: var(--sp-5);
      list-style: disc;
    }

    .product-detail-content-inner ul li { margin-bottom: var(--sp-2); }

    /* --- Clinical Results Section --- */
    .clinical-results {
      padding: var(--sp-24) 0;
      background: var(--grad-dark);
      color: var(--white);
      position: relative;
      overflow: hidden;
    }

    .clinical-results::before {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(ellipse 60% 60% at 80% 20%, rgba(232,119,34,0.15) 0%, transparent 60%);
    }

    .results-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: var(--sp-6);
      position: relative;
      z-index: 1;
    }

    .result-card {
      text-align: center;
      padding: var(--sp-8);
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: var(--radius-xl);
      backdrop-filter: blur(8px);
    }

    .result-card .stat {
      font-size: 3rem;
      font-weight: 800;
      color: var(--gold);
      line-height: 1;
      margin-bottom: var(--sp-2);
    }

    .result-card .symptom {
      font-size: 1rem;
      font-weight: 700;
      color: var(--white);
      margin-bottom: var(--sp-2);
    }

    .result-card .detail {
      font-size: 0.82rem;
      color: rgba(255,255,255,0.5);
    }

    /* --- Reviews Section --- */
    .reviews-section {
      padding: var(--sp-24) 0;
      background: var(--cream);
    }

    .reviews-summary {
      display: flex;
      align-items: center;
      gap: var(--sp-10);
      margin-bottom: var(--sp-10);
      padding: var(--sp-8);
      background: var(--white);
      border-radius: var(--radius-xl);
    }

    .reviews-overall {
      text-align: center;
      padding: 0 var(--sp-8);
    }

    .reviews-overall .big-score {
      font-size: 3.5rem;
      font-weight: 800;
      color: var(--charcoal);
      line-height: 1;
    }

    .reviews-overall .stars {
      display: flex;
      justify-content: center;
      gap: 2px;
      color: var(--gold);
      margin: var(--sp-2) 0;
    }

    .reviews-overall .total {
      font-size: 0.85rem;
      color: rgba(45,45,45,0.5);
    }

    .reviews-bars {
      flex: 1;
    }

    .review-bar-row {
      display: flex;
      align-items: center;
      gap: var(--sp-3);
      margin-bottom: var(--sp-2);
    }

    .review-bar-label {
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--charcoal);
      width: 50px;
    }

    .review-bar-track {
      flex: 1;
      height: 8px;
      background: rgba(0,0,0,0.06);
      border-radius: 4px;
      overflow: hidden;
    }

    .review-bar-fill {
      height: 100%;
      background: var(--gold);
      border-radius: 4px;
    }

    .review-bar-count {
      font-size: 0.78rem;
      color: rgba(45,45,45,0.5);
      width: 40px;
      text-align: right;
    }

    .reviews-list {
      display: grid;
      gap: var(--sp-5);
    }

    .review-card {
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: var(--sp-6);
    }

    .review-card-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: var(--sp-3);
    }

    .review-card .stars { display: flex; gap: 2px; color: var(--gold); }
    .review-card .date { font-size: 0.78rem; color: rgba(45,45,45,0.4); }

    .review-card .title {
      font-weight: 700;
      color: var(--charcoal);
      margin-bottom: var(--sp-2);
    }

    .review-card .body {
      font-size: 0.92rem;
      color: rgba(45,45,45,0.65);
      line-height: 1.65;
      margin-bottom: var(--sp-4);
    }

    .review-card .author {
      font-size: 0.82rem;
      color: rgba(45,45,45,0.45);
    }

    .review-card .verified {
      color: var(--red);
      font-weight: 600;
    }

    /* How to Use */
    .how-to-use {
      padding: var(--sp-24) 0;
      background: var(--white);
    }

    .steps-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: var(--sp-8);
    }

    .step-card {
      text-align: center;
      padding: var(--sp-8);
    }

    .step-number {
      width: 56px;
      height: 56px;
      margin: 0 auto var(--sp-5);
      background: var(--grad-brand);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--white);
      font-size: 1.3rem;
      font-weight: 800;
    }

    .step-card h3 {
      color: var(--charcoal);
      margin-bottom: var(--sp-3);
    }

    .step-card p {
      font-size: 0.92rem;
      color: rgba(45,45,45,0.6);
      line-height: 1.65;
    }

    /* --- Enhanced Product Design --- */
    .result-card {
      transition: all var(--duration-slow) var(--ease-out);
    }

    .result-card:hover {
      background: rgba(255,255,255,0.1);
      border-color: rgba(255,184,28,0.3);
      transform: translateY(-4px);
    }

    .result-card:hover .stat {
      text-shadow: 0 0 30px rgba(255,184,28,0.4);
    }

    .step-card {
      transition: all var(--duration) var(--ease-out);
      border-radius: var(--radius-xl);
    }

    .step-card:hover {
      background: var(--cream);
      transform: translateY(-4px);
    }

    .add-to-cart-btn::before {
      content: '';
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
      transition: left 0.6s ease;
    }

    .add-to-cart-btn:hover::before {
      left: 100%;
    }

    .clinical-results .section-header::after {
      content: '*Based on a 90-day placebo-controlled study. Results may vary.';
      display: block;
      font-size: 0.72rem;
      color: rgba(255,255,255,0.35);
      margin-top: var(--sp-3);
      font-weight: 400;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .product-hero { grid-template-columns: 1fr; gap: var(--sp-8); }
      .product-gallery { position: static; }
      .results-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 768px) {
      .product-page { padding-top: 102px; }
      .results-grid { grid-template-columns: 1fr 1fr; }
      .steps-row { grid-template-columns: 1fr; }
      .reviews-summary { flex-direction: column; }
      .product-trust { grid-template-columns: 1fr; }
    }