/* ── Reset & Base ── */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
      background: #f1f4ff;
      color: #1a1a1a;
      line-height: 1.6;
    }
    img { display: block; width: 100%; height: auto; }
    a { color: inherit; text-decoration: none; }

    /* ── Layout ── */
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* ── Header / Nav ── */
    .site-header {
      background: #fff;
      border-bottom: 1px solid #e4e8f8;
      position: sticky;
      top: 0;
      z-index: 100;
    }
    .site-header .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 60px;
    }
    .brand-logo {
      font-size: 17px;
      font-weight: 800;
      letter-spacing: 0.08em;
      color: #1a1a1a;
      text-transform: uppercase;
    }
    .nav-links {
      display: flex;
      gap: 28px;
      list-style: none;
    }
    .nav-links a {
      font-size: 13px;
      font-weight: 500;
      color: #555;
      transition: color .2s;
    }
    .nav-links a:hover { color: #1a1a1a; }
    .header-cta {
      background: #1a1a1a;
      color: #fff;
      padding: 9px 20px;
      border-radius: 6px;
      font-size: 13px;
      font-weight: 600;
      transition: background .2s;
    }
    .header-cta:hover { background: #333; }
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      padding: 4px;
    }
    .hamburger span {
      display: block;
      width: 24px;
      height: 2px;
      background: #1a1a1a;
      border-radius: 2px;
    }

    /* ── Breadcrumb ── */
    .breadcrumb {
      padding: 14px 0 10px;
      font-size: 12px;
      color: #888;
    }
    .breadcrumb a { color: #888; }
    .breadcrumb a:hover { color: #1a1a1a; }
    .breadcrumb span { margin: 0 6px; }

    /* ── Product Hero Section ── */
    .product-hero {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      padding: 24px 0 48px;
      align-items: start;
    }

    /* Gallery */
    .gallery { position: sticky; top: 76px; }
    .gallery-main {
      border-radius: 14px;
      overflow: hidden;
      background: #fff;
      border: 1px solid #e4e8f8;
      margin-bottom: 10px;
      cursor: zoom-in;
    }
    .gallery-main img {
      width: 100%;
      aspect-ratio: 1/1;
      object-fit: cover;
      transition: transform .3s ease;
    }
    .gallery-main img:hover { transform: scale(1.03); }
    .gallery-thumbs {
      display: grid;
      grid-template-columns: repeat(7, 1fr);
      gap: 6px;
    }
    .thumb {
      border-radius: 8px;
      overflow: hidden;
      border: 2px solid transparent;
      cursor: pointer;
      background: #fff;
      transition: border-color .2s;
      aspect-ratio: 1/1;
    }
    .thumb img { width: 100%; height: 100%; object-fit: cover; }
    .thumb.active, .thumb:hover { border-color: #1a1a1a; }

    /* Product Info */
    .product-info {}
    .product-badges {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      margin-bottom: 14px;
    }
    .badge {
      font-size: 11px;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: 20px;
      letter-spacing: .04em;
      text-transform: uppercase;
    }
    .badge-popular { background: #1a1a1a; color: #fff; }
    .badge-custom  { background: #e4e8f8; color: #3a4a7a; }
    .badge-bulk    { background: #e8f5ee; color: #2a7a4a; }

    .product-title {
      font-size: 28px;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 10px;
      letter-spacing: -.02em;
    }
    .product-subtitle {
      font-size: 14px;
      color: #666;
      margin-bottom: 16px;
    }

    /* Stars */
    .rating-row {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 20px;
    }
    .stars { color: #f5a623; font-size: 15px; letter-spacing: 2px; }
    .rating-text { font-size: 13px; color: #666; }
    .rating-text a { color: #3a4a7a; text-decoration: underline; }

    /* Price */
    .price-block { margin-bottom: 22px; }
    .price-main { font-size: 32px; font-weight: 800; color: #1a1a1a; }
    .price-unit { font-size: 13px; color: #888; margin-top: 2px; }
    .price-bulk {
      margin-top: 8px;
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
    }
    .bulk-tag {
      font-size: 12px;
      background: #fff;
      border: 1px solid #d0d8f0;
      border-radius: 6px;
      padding: 4px 10px;
      color: #3a4a7a;
      font-weight: 500;
    }

    /* Divider */
    .divider { border: none; border-top: 1px solid #e4e8f8; margin: 20px 0; }

    /* Option row */
    .option-label {
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 8px;
      color: #444;
    }
    .option-label span { font-weight: 400; color: #888; }
    .option-btns {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      margin-bottom: 18px;
    }
    .opt-btn {
      padding: 8px 16px;
      border: 1.5px solid #d0d8f0;
      border-radius: 8px;
      font-size: 13px;
      font-weight: 500;
      background: #fff;
      cursor: pointer;
      transition: all .2s;
    }
    .opt-btn:hover, .opt-btn.selected {
      border-color: #1a1a1a;
      background: #1a1a1a;
      color: #fff;
    }

    /* Engrave input */
    .engrave-box {
      background: #fff;
      border: 1.5px solid #d0d8f0;
      border-radius: 10px;
      padding: 14px 16px;
      margin-bottom: 18px;
    }
    .engrave-box label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 8px;
      color: #444;
    }
    .engrave-box textarea {
      width: 100%;
      border: 1px solid #e4e8f8;
      border-radius: 6px;
      padding: 10px 12px;
      font-size: 13px;
      color: #333;
      resize: vertical;
      min-height: 72px;
      font-family: inherit;
      background: #f9faff;
    }
    .engrave-box textarea:focus { outline: none; border-color: #3a4a7a; }
    .char-count { font-size: 11px; color: #aaa; text-align: right; margin-top: 4px; }

    /* CTA Buttons */
    .btn-primary {
      display: block;
      width: 100%;
      padding: 16px;
      background: #1a1a1a;
      color: #fff;
      font-size: 15px;
      font-weight: 700;
      border: none;
      border-radius: 10px;
      cursor: pointer;
      text-align: center;
      letter-spacing: .03em;
      transition: background .2s;
      margin-bottom: 10px;
    }
    .btn-primary:hover { background: #333; }
    .btn-secondary {
      display: block;
      width: 100%;
      padding: 14px;
      background: transparent;
      color: #1a1a1a;
      font-size: 14px;
      font-weight: 600;
      border: 1.5px solid #1a1a1a;
      border-radius: 10px;
      cursor: pointer;
      text-align: center;
      transition: all .2s;
      margin-bottom: 18px;
    }
    .btn-secondary:hover { background: #f1f4ff; }

    /* Trust icons */
    .trust-row {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-top: 4px;
    }
    .trust-item {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 12px;
      color: #666;
    }
    .trust-icon { font-size: 16px; }

    /* ── Content / Marketing Images ── */
    .content-images {
      padding: 20px 0 60px;
    }
    .content-img-block {
      border-radius: 16px;
      overflow: hidden;
      margin-bottom: 16px;
      background: #fff;
      border: 1px solid #e4e8f8;
    }
    .content-img-block img {
      width: 100%;
      display: block;
    }
    /* Two-column image grid for 16:9 pairs */
    .img-grid-2 {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 16px;
    }
    .img-grid-2 .content-img-block { margin-bottom: 0; }

    /* ── Features Strip ── */
    .features-strip {
      background: #fff;
      border-radius: 16px;
      border: 1px solid #e4e8f8;
      padding: 36px 40px;
      margin-bottom: 60px;
    }
    .features-strip h2 {
      font-size: 22px;
      font-weight: 800;
      text-align: center;
      margin-bottom: 30px;
      letter-spacing: -.01em;
    }
    .features-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .feature-card {
      text-align: center;
    }
    .feature-icon {
      font-size: 32px;
      margin-bottom: 10px;
    }
    .feature-card h3 {
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .feature-card p {
      font-size: 12px;
      color: #777;
      line-height: 1.5;
    }

    /* ── Reviews ── */
    .reviews-section {
      margin-bottom: 60px;
    }
    .section-title {
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 24px;
      letter-spacing: -.01em;
    }
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }
    .review-card {
      background: #fff;
      border: 1px solid #e4e8f8;
      border-radius: 14px;
      padding: 20px;
    }
    .review-stars { color: #f5a623; font-size: 13px; margin-bottom: 8px; }
    .review-text { font-size: 13px; color: #444; line-height: 1.6; margin-bottom: 12px; }
    .reviewer {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .reviewer-avatar {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: #e4e8f8;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 700;
      color: #3a4a7a;
      flex-shrink: 0;
    }
    .reviewer-name { font-size: 13px; font-weight: 600; }
    .reviewer-date { font-size: 11px; color: #aaa; }

    /* ── FAQ ── */
    .faq-section {
      margin-bottom: 60px;
    }
    .faq-item {
      background: #fff;
      border: 1px solid #e4e8f8;
      border-radius: 12px;
      margin-bottom: 10px;
      overflow: hidden;
    }
    .faq-question {
      width: 100%;
      background: none;
      border: none;
      padding: 18px 22px;
      text-align: left;
      font-size: 14px;
      font-weight: 600;
      color: #1a1a1a;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      font-family: inherit;
      transition: background .15s;
    }
    .faq-question:hover { background: #f9faff; }
    .faq-icon {
      font-size: 20px;
      font-weight: 300;
      flex-shrink: 0;
      transition: transform .25s;
      color: #666;
    }
    .faq-item.open .faq-icon { transform: rotate(45deg); }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height .3s ease, padding .3s;
      padding: 0 22px;
    }
    .faq-item.open .faq-answer {
      max-height: 300px;
      padding: 0 22px 18px;
    }
    .faq-answer p {
      font-size: 13px;
      color: #555;
      line-height: 1.7;
    }

    /* ── CTA Banner ── */
    .cta-banner {
      background: #1a1a1a;
      border-radius: 16px;
      padding: 48px 40px;
      text-align: center;
      margin-bottom: 60px;
      color: #fff;
    }
    .cta-banner h2 {
      font-size: 28px;
      font-weight: 800;
      margin-bottom: 10px;
      letter-spacing: -.01em;
    }
    .cta-banner p {
      font-size: 15px;
      color: #bbb;
      margin-bottom: 28px;
    }
    .cta-banner .btn-cta {
      display: inline-block;
      padding: 14px 36px;
      background: #fff;
      color: #1a1a1a;
      font-size: 15px;
      font-weight: 700;
      border-radius: 10px;
      transition: opacity .2s;
    }
    .cta-banner .btn-cta:hover { opacity: .85; }

    /* ── Footer ── */
    .site-footer {
      background: #fff;
      border-top: 1px solid #e4e8f8;
      padding: 36px 0 24px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 32px;
      margin-bottom: 28px;
    }
    .footer-brand { font-size: 16px; font-weight: 800; letter-spacing: .08em; margin-bottom: 10px; }
    .footer-tagline { font-size: 13px; color: #888; line-height: 1.6; }
    .footer-col h4 { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: #888; margin-bottom: 12px; }
    .footer-col ul { list-style: none; }
    .footer-col ul li { margin-bottom: 8px; }
    .footer-col ul li a { font-size: 13px; color: #555; transition: color .2s; }
    .footer-col ul li a:hover { color: #1a1a1a; }
    .footer-bottom {
      border-top: 1px solid #e4e8f8;
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px;
    }
    .footer-bottom p { font-size: 12px; color: #aaa; }

    /* ── Responsive ── */
    @media (max-width: 900px) {
      .product-hero { grid-template-columns: 1fr; gap: 28px; }
      .gallery { position: static; }
      .features-grid { grid-template-columns: repeat(2, 1fr); }
      .reviews-grid { grid-template-columns: 1fr 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
      .img-grid-2 { grid-template-columns: 1fr; }
    }
    @media (max-width: 600px) {
      .nav-links, .header-cta { display: none; }
      .hamburger { display: flex; }
      .product-title { font-size: 22px; }
      .gallery-thumbs { grid-template-columns: repeat(4, 1fr); }
      .features-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
      .reviews-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .features-strip { padding: 24px 20px; }
      .cta-banner { padding: 32px 20px; }
      .cta-banner h2 { font-size: 20px; }
      .price-main { font-size: 26px; }
    }