/* ─── Reset & Base ─────────────────────────────────────── */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    :root {
      --bg:        #f1f4ff;
      --white:     #ffffff;
      --navy:      #1a2744;
      --navy-mid:  #2d3f6b;
      --accent:    #4a6cf7;
      --accent-lt: #e8edff;
      --text:      #2c3550;
      --muted:     #6b7597;
      --border:    #d8dff5;
      --radius:    12px;
      --radius-lg: 20px;
      --shadow:    0 4px 24px rgba(74,108,247,.10);
      --shadow-sm: 0 2px 10px rgba(74,108,247,.07);
      --font:      'Segoe UI', system-ui, -apple-system, sans-serif;
    }
    html { scroll-behavior: smooth; }
    body {
      background: var(--bg);
      color: var(--text);
      font-family: var(--font);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }
    img { display: block; max-width: 100%; height: auto; }
    a { color: inherit; text-decoration: none; }
    button { cursor: pointer; border: none; background: none; font-family: var(--font); }

    /* ─── Utility ──────────────────────────────────────────── */
    .container { max-width: 1220px; margin: 0 auto; padding: 0 20px; }
    .tag {
      display: inline-block;
      background: var(--accent-lt);
      color: var(--accent);
      font-size: .72rem;
      font-weight: 700;
      letter-spacing: .08em;
      text-transform: uppercase;
      padding: 4px 12px;
      border-radius: 99px;
    }

    /* ─── Nav ──────────────────────────────────────────────── */
    nav {
      background: var(--white);
      border-bottom: 1px solid var(--border);
      position: sticky; top: 0; z-index: 100;
      box-shadow: var(--shadow-sm);
    }
    .nav-inner {
      display: flex; align-items: center; justify-content: space-between;
      padding: 14px 20px; max-width: 1220px; margin: 0 auto;
    }
    .nav-logo {
      font-size: 1.15rem; font-weight: 800; letter-spacing: .06em;
      color: var(--navy); text-transform: uppercase;
    }
    .nav-logo span { color: var(--accent); }
    .nav-links { display: flex; gap: 28px; font-size: .88rem; font-weight: 500; color: var(--muted); }
    .nav-links a:hover { color: var(--accent); }
    .nav-cta {
      background: var(--navy); color: var(--white);
      padding: 9px 22px; border-radius: 8px;
      font-size: .85rem; font-weight: 700; letter-spacing: .03em;
      transition: background .2s;
    }
    .nav-cta:hover { background: var(--accent); }
    @media(max-width:768px){
      .nav-links { display: none; }
      .nav-cta { padding: 8px 16px; font-size: .8rem; }
    }

    /* ─── Hero breadcrumb ──────────────────────────────────── */
    .breadcrumb {
      padding: 14px 0 0;
      font-size: .78rem; color: var(--muted);
    }
    .breadcrumb span { margin: 0 5px; }
    .breadcrumb a:hover { color: var(--accent); }

    /* ─── Product Top Section ──────────────────────────────── */
    .product-top {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      padding: 28px 0 60px;
      align-items: start;
    }
    @media(max-width:900px){
      .product-top { grid-template-columns: 1fr; gap: 32px; }
    }

    /* Gallery */
    .gallery { position: sticky; top: 74px; }
    .gallery-main {
      border-radius: var(--radius-lg);
      overflow: hidden;
      background: var(--white);
      box-shadow: var(--shadow);
      aspect-ratio: 1/1;
      cursor: zoom-in;
    }
    .gallery-main img {
      width: 100%; height: 100%;
      object-fit: cover;
      transition: transform .35s ease;
    }
    .gallery-main:hover img { transform: scale(1.04); }
    .gallery-thumbs {
      display: grid;
      grid-template-columns: repeat(7, 1fr);
      gap: 8px;
      margin-top: 12px;
    }
    .thumb {
      border-radius: 8px;
      overflow: hidden;
      border: 2px solid transparent;
      cursor: pointer;
      aspect-ratio: 1/1;
      background: var(--white);
      transition: border-color .18s, transform .18s;
    }
    .thumb img { width: 100%; height: 100%; object-fit: cover; }
    .thumb:hover, .thumb.active { border-color: var(--accent); transform: scale(1.05); }
    @media(max-width:600px){
      .gallery-thumbs { grid-template-columns: repeat(4, 1fr); }
    }

    /* ─── Product Info ─────────────────────────────────────── */
    .product-info {}
    .product-badge { margin-bottom: 14px; }
    .product-title {
      font-size: clamp(1.5rem, 3vw, 2.1rem);
      font-weight: 800;
      color: var(--navy);
      line-height: 1.22;
      margin-bottom: 12px;
    }
    .product-subtitle {
      font-size: .95rem; color: var(--muted);
      margin-bottom: 22px;
      display: flex; gap: 10px; flex-wrap: wrap; align-items: center;
    }
    .dot { color: var(--border); }

    /* Stars */
    .stars { display: flex; align-items: center; gap: 5px; margin-bottom: 22px; }
    .stars-icons { color: #f5a623; letter-spacing: 2px; }
    .stars-count { font-size: .8rem; color: var(--muted); }

    /* Features strip */
    .features-strip {
      display: flex; gap: 0;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      margin-bottom: 28px;
      background: var(--white);
    }
    .feat {
      flex: 1; text-align: center;
      padding: 14px 8px;
      border-right: 1px solid var(--border);
    }
    .feat:last-child { border-right: none; }
    .feat-icon { font-size: 1.4rem; margin-bottom: 4px; }
    .feat-label { font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--navy); }
    .feat-sub { font-size: .68rem; color: var(--muted); }
    @media(max-width:480px){
      .features-strip { flex-wrap: wrap; }
      .feat { flex: 0 0 50%; border-bottom: 1px solid var(--border); }
      .feat:nth-child(2n){ border-right: none; }
    }

    /* CTA buttons */
    .cta-group { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 28px; }
    .btn-primary {
      flex: 1; min-width: 160px;
      background: var(--navy); color: var(--white);
      padding: 15px 28px; border-radius: 10px;
      font-size: .95rem; font-weight: 700;
      text-align: center;
      transition: background .2s, transform .15s;
      box-shadow: 0 4px 14px rgba(26,39,68,.22);
    }
    .btn-primary:hover { background: var(--accent); transform: translateY(-1px); }
    .btn-secondary {
      flex: 1; min-width: 160px;
      background: var(--accent-lt); color: var(--accent);
      padding: 15px 28px; border-radius: 10px;
      font-size: .95rem; font-weight: 700;
      text-align: center; border: 2px solid var(--accent);
      transition: background .2s;
    }
    .btn-secondary:hover { background: var(--accent); color: var(--white); }

    /* Trust signals */
    .trust {
      display: flex; gap: 18px; flex-wrap: wrap;
      font-size: .78rem; color: var(--muted);
    }
    .trust-item { display: flex; align-items: center; gap: 5px; }
    .trust-item svg { flex-shrink: 0; }

    /* ─── Spec Table ───────────────────────────────────────── */
    .spec-section {
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: 32px;
      margin-bottom: 32px;
      box-shadow: var(--shadow-sm);
    }
    .spec-section h3 {
      font-size: 1.05rem; font-weight: 800; color: var(--navy);
      margin-bottom: 18px; display: flex; align-items: center; gap: 8px;
    }
    .spec-table { width: 100%; border-collapse: collapse; font-size: .85rem; }
    .spec-table tr:nth-child(odd) td:first-child { background: var(--bg); }
    .spec-table td {
      padding: 9px 12px; border-bottom: 1px solid var(--border);
      vertical-align: top;
    }
    .spec-table td:first-child { font-weight: 600; color: var(--navy); width: 42%; }
    .spec-table td:last-child { color: var(--text); }
    .spec-table tr:last-child td { border-bottom: none; }

    /* ─── Section Titles ───────────────────────────────────── */
    .section-header { text-align: center; padding: 60px 0 36px; }
    .section-header h2 {
      font-size: clamp(1.6rem, 3vw, 2.3rem);
      font-weight: 800; color: var(--navy);
      margin-top: 10px; margin-bottom: 12px;
    }
    .section-header p { font-size: .95rem; color: var(--muted); max-width: 540px; margin: 0 auto; }

    /* ─── Full-width Image Gallery ─────────────────────────── */
    .gallery-wide { padding-bottom: 60px; }
    .gallery-grid-top {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-bottom: 16px;
    }
    .gallery-grid-bottom {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }
    .img-card {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      background: var(--white);
    }
    .img-card img {
      width: 100%; height: 100%;
      object-fit: cover;
      display: block;
      transition: transform .35s;
    }
    .img-card:hover img { transform: scale(1.03); }
    .img-card.tall { aspect-ratio: 16/9; }
    .img-card.square { aspect-ratio: 1/1; }
    @media(max-width:700px){
      .gallery-grid-top { grid-template-columns: 1fr; }
      .gallery-grid-bottom { grid-template-columns: 1fr 1fr; }
    }
    @media(max-width:480px){
      .gallery-grid-bottom { grid-template-columns: 1fr; }
    }

    /* ─── How It's Made steps ──────────────────────────────── */
    .process-section { padding-bottom: 60px; }
    .process-img {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow);
      width: 100%;
    }
    .process-img img { width: 100%; display: block; }

    /* ─── Feature Cards ────────────────────────────────────── */
    .features-section { padding-bottom: 60px; }
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .feature-card {
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border);
      transition: transform .2s, box-shadow .2s;
    }
    .feature-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
    .feature-card .icon { font-size: 2rem; margin-bottom: 12px; }
    .feature-card h4 { font-size: .95rem; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
    .feature-card p { font-size: .82rem; color: var(--muted); line-height: 1.6; }
    @media(max-width:768px){ .features-grid { grid-template-columns: 1fr 1fr; } }
    @media(max-width:480px){ .features-grid { grid-template-columns: 1fr; } }

    /* ─── FAQ ──────────────────────────────────────────────── */
    .faq-section { padding-bottom: 80px; }
    .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 10px; }
    .faq-item {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-q {
      display: flex; align-items: center; justify-content: space-between;
      padding: 18px 22px;
      font-weight: 600; font-size: .92rem; color: var(--navy);
      cursor: pointer;
      gap: 12px;
      -webkit-tap-highlight-color: transparent;
    }
    .faq-q:hover { color: var(--accent); }
    .faq-arrow {
      flex-shrink: 0; width: 22px; height: 22px;
      background: var(--accent-lt); border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      transition: transform .25s, background .2s;
      color: var(--accent); font-size: .75rem; font-weight: 800;
    }
    .faq-item.open .faq-arrow { transform: rotate(45deg); background: var(--accent); color: var(--white); }
    .faq-a {
      max-height: 0; overflow: hidden;
      transition: max-height .35s ease, padding .3s;
      font-size: .86rem; color: var(--muted); line-height: 1.7;
    }
    .faq-item.open .faq-a { max-height: 400px; }
    .faq-a-inner { padding: 0 22px 18px; border-top: 1px solid var(--border); padding-top: 14px; }

    /* ─── CTA Banner ───────────────────────────────────────── */
    .cta-banner {
      background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%);
      border-radius: var(--radius-lg);
      padding: 60px 40px;
      text-align: center;
      margin-bottom: 80px;
      color: var(--white);
    }
    .cta-banner h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800; margin-bottom: 10px; }
    .cta-banner p { font-size: .95rem; opacity: .78; margin-bottom: 28px; }
    .cta-banner .btn-primary { display: inline-block; min-width: auto; background: var(--white); color: var(--navy); }
    .cta-banner .btn-primary:hover { background: var(--accent-lt); color: var(--accent); }

    /* ─── Footer ───────────────────────────────────────────── */
    footer {
      background: var(--white);
      border-top: 1px solid var(--border);
      padding: 28px 0;
      text-align: center;
      font-size: .8rem; color: var(--muted);
    }
    .footer-logo {
      font-size: 1.05rem; font-weight: 800;
      color: var(--navy); text-transform: uppercase;
      margin-bottom: 8px; letter-spacing: .06em;
    }
    .footer-logo span { color: var(--accent); }

    /* ─── Lightbox ─────────────────────────────────────────── */
    .lightbox {
      display: none; position: fixed; inset: 0;
      background: rgba(10,14,30,.88); z-index: 999;
      align-items: center; justify-content: center;
    }
    .lightbox.open { display: flex; }
    .lightbox img {
      max-width: 90vw; max-height: 90vh;
      border-radius: var(--radius-lg);
      box-shadow: 0 8px 60px rgba(0,0,0,.5);
    }
    .lightbox-close {
      position: absolute; top: 18px; right: 22px;
      color: #fff; font-size: 2rem; cursor: pointer; line-height: 1;
      background: rgba(255,255,255,.12); border-radius: 50%;
      width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
    }
    .lightbox-close:hover { background: rgba(255,255,255,.25); }

    /* ─── Scroll reveal ────────────────────────────────────── */
    [data-reveal] {
      opacity: 0; transform: translateY(24px);
      transition: opacity .55s ease, transform .55s ease;
    }
    [data-reveal].visible { opacity: 1; transform: none; }