/* ── Design tokens ── */
    :root {
      --bg:        #f1f4ff;
      --white:     #ffffff;
      --ink:       #1a1a2e;
      --ink-light: #4a4a6a;
      --accent:    #c17f3e;       /* tan leather tone */
      --accent2:   #1a1a2e;      /* dark cord tone   */
      --border:    #dde3f5;
      --radius:    14px;
      --shadow:    0 4px 24px rgba(26,26,46,.08);
      --shadow-lg: 0 8px 48px rgba(26,26,46,.12);
      --font:      'Inter', 'Helvetica Neue', Arial, sans-serif;
      --max:       1220px;
      --trans:     .22s cubic-bezier(.4,0,.2,1);
    }

    /* ── Reset ── */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; font-size: 16px; }
    body {
      font-family: var(--font);
      background: var(--bg);
      color: var(--ink);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; }

    /* ── Layout helpers ── */
    .container { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
    .section    { padding: 80px 0; }
    .section-sm { padding: 56px 0; }

    /* ════════════════════════════════
       HEADER / NAV
    ════════════════════════════════ */
    .site-header {
      position: sticky; top: 0; z-index: 100;
      background: rgba(241,244,255,.92);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border);
      padding: 0 20px;
    }
    .nav-inner {
      max-width: var(--max); margin: 0 auto;
      display: flex; align-items: center; justify-content: space-between;
      height: 64px;
    }
    .nav-logo {
      font-size: 1rem; font-weight: 800; letter-spacing: .08em;
      text-transform: uppercase; color: var(--ink);
    }
    .nav-logo span { color: var(--accent); }
    .nav-links { display: flex; gap: 32px; }
    .nav-links a { font-size: .85rem; font-weight: 500; letter-spacing: .04em; opacity: .75; transition: opacity var(--trans); }
    .nav-links a:hover { opacity: 1; }
    .nav-cta {
      background: var(--accent2); color: #fff;
      padding: 9px 22px; border-radius: 99px;
      font-size: .82rem; font-weight: 600; letter-spacing: .04em;
      transition: background var(--trans), transform var(--trans);
    }
    .nav-cta:hover { background: var(--accent); transform: translateY(-1px); }

    /* Hamburger (mobile) */
    .hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
    .hamburger span { width: 24px; height: 2px; background: var(--ink); border-radius: 2px; transition: var(--trans); }

    /* ════════════════════════════════
       HERO – image gallery + info
    ════════════════════════════════ */
    .hero { padding: 56px 0 80px; }
    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: start;
    }

    /* Gallery */
    .gallery { position: sticky; top: 84px; }
    .gallery-main {
      width: 100%; aspect-ratio: 4/3;
      border-radius: var(--radius);
      overflow: hidden;
      background: var(--white);
      box-shadow: var(--shadow-lg);
      cursor: zoom-in;
      position: relative;
    }
    .gallery-main img {
      width: 100%; height: 100%;
      object-fit: cover;
      transition: transform .5s ease;
    }
    .gallery-main:hover img { transform: scale(1.04); }

    .gallery-thumbs {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 10px;
      margin-top: 12px;
    }
    .thumb {
      aspect-ratio: 1;
      border-radius: 9px;
      overflow: hidden;
      cursor: pointer;
      border: 2.5px solid transparent;
      transition: border-color var(--trans), box-shadow var(--trans);
      background: var(--white);
    }
    .thumb img { width: 100%; height: 100%; object-fit: cover; }
    .thumb:hover, .thumb.active { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(193,127,62,.18); }

    /* Product info */
    .product-info { padding-top: 8px; }
    .product-tag {
      display: inline-flex; align-items: center; gap: 6px;
      font-size: .72rem; font-weight: 700; letter-spacing: .1em;
      text-transform: uppercase; color: var(--accent);
      background: rgba(193,127,62,.1); padding: 5px 12px;
      border-radius: 99px; margin-bottom: 20px;
    }
    .product-title {
      font-size: clamp(1.6rem, 3.5vw, 2.4rem);
      font-weight: 800; line-height: 1.18; margin-bottom: 14px;
    }
    .product-subtitle {
      font-size: 1rem; color: var(--ink-light);
      margin-bottom: 28px; max-width: 460px;
    }

    .spec-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
    .chip {
      font-size: .75rem; font-weight: 600;
      padding: 6px 14px; border-radius: 99px;
      border: 1.5px solid var(--border);
      background: var(--white);
      color: var(--ink-light);
    }

    .divider { border: none; border-top: 1px solid var(--border); margin: 28px 0; }

    .feature-list { list-style: none; display: flex; flex-direction: column; gap: 12px; margin-bottom: 32px; }
    .feature-list li {
      display: flex; align-items: flex-start; gap: 12px;
      font-size: .9rem; line-height: 1.5; color: var(--ink-light);
    }
    .feature-list li::before {
      content: '✓';
      display: flex; align-items: center; justify-content: center;
      width: 20px; height: 20px; flex-shrink: 0;
      border-radius: 50%; background: rgba(193,127,62,.12);
      color: var(--accent); font-size: .75rem; font-weight: 700;
      margin-top: 1px;
    }

    .cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
    .btn-primary {
      background: var(--accent2); color: #fff;
      padding: 14px 32px; border-radius: 99px;
      font-size: .9rem; font-weight: 700; letter-spacing: .03em;
      transition: background var(--trans), transform var(--trans), box-shadow var(--trans);
      display: inline-flex; align-items: center; gap: 8px;
    }
    .btn-primary:hover { background: var(--accent); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(193,127,62,.3); }
    .btn-secondary {
      background: var(--white); color: var(--ink);
      padding: 14px 32px; border-radius: 99px;
      font-size: .9rem; font-weight: 700;
      border: 2px solid var(--border);
      transition: border-color var(--trans), transform var(--trans);
      display: inline-flex; align-items: center; gap: 8px;
    }
    .btn-secondary:hover { border-color: var(--accent2); transform: translateY(-2px); }

    .trust-row {
      display: flex; flex-wrap: wrap; gap: 20px; margin-top: 28px;
    }
    .trust-item { display: flex; align-items: center; gap: 7px; font-size: .78rem; font-weight: 500; color: var(--ink-light); }
    .trust-item .icon { font-size: 1rem; }

    /* ════════════════════════════════
       SELLING POINTS – icon cards
    ════════════════════════════════ */
    .selling-points { background: var(--white); border-radius: 24px; box-shadow: var(--shadow); margin: 0 0 80px; padding: 64px 40px; }
    .sp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
    .sp-card { text-align: center; }
    .sp-icon { font-size: 2rem; margin-bottom: 14px; }
    .sp-title { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
    .sp-body { font-size: .85rem; color: var(--ink-light); }

    /* ════════════════════════════════
       SERIES IMAGE STRIP (16:9 wide)
    ════════════════════════════════ */
    .series-strip { }
    .section-label {
      font-size: .72rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
      color: var(--accent); margin-bottom: 10px;
    }
    .section-title { font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 800; margin-bottom: 10px; }
    .section-body { font-size: .95rem; color: var(--ink-light); max-width: 560px; margin-bottom: 40px; }

    .series-scroll {
      display: flex; gap: 16px; overflow-x: auto; padding-bottom: 14px;
      scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch;
    }
    .series-scroll::-webkit-scrollbar { height: 5px; }
    .series-scroll::-webkit-scrollbar-track { background: var(--border); border-radius: 99px; }
    .series-scroll::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 99px; }

    .series-card {
      flex-shrink: 0;
      width: 520px; border-radius: var(--radius); overflow: hidden;
      background: var(--white); box-shadow: var(--shadow);
      scroll-snap-align: start;
      transition: transform var(--trans), box-shadow var(--trans);
    }
    .series-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
    .series-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; display: block; }
    .series-card-label { padding: 14px 16px; font-size: .8rem; font-weight: 600; color: var(--ink-light); }

    /* ════════════════════════════════
       SPEC TABLE
    ════════════════════════════════ */
    .spec-section { background: var(--white); border-radius: 24px; box-shadow: var(--shadow); padding: 56px 40px; }
    .spec-two { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
    .spec-image { border-radius: var(--radius); overflow: hidden; }
    .spec-image img { width: 100%; object-fit: cover; }
    .spec-table { width: 100%; border-collapse: collapse; }
    .spec-table tr { border-bottom: 1px solid var(--border); }
    .spec-table tr:last-child { border-bottom: none; }
    .spec-table td { padding: 13px 8px; font-size: .88rem; line-height: 1.4; }
    .spec-table td:first-child { font-weight: 600; color: var(--ink-light); width: 45%; }
    .spec-table td:last-child { color: var(--ink); }

    /* ════════════════════════════════
       DETAIL GRID (2-column mosaic)
    ════════════════════════════════ */
    .detail-mosaic {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }
    .detail-mosaic .d-full { grid-column: 1 / -1; }
    .detail-card {
      border-radius: var(--radius); overflow: hidden;
      background: var(--white); box-shadow: var(--shadow);
      transition: transform var(--trans), box-shadow var(--trans);
    }
    .detail-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
    .detail-card img { width: 100%; object-fit: cover; display: block; }
    .detail-card.portrait img { aspect-ratio: 4/5; }
    .detail-card.landscape img { aspect-ratio: 16/9; }
    .detail-card.square img { aspect-ratio: 1; }

    /* ════════════════════════════════
       FAQ
    ════════════════════════════════ */
    .faq-list { max-width: 760px; display: flex; flex-direction: column; gap: 12px; }
    .faq-item {
      background: var(--white); border-radius: var(--radius);
      box-shadow: var(--shadow); overflow: hidden;
    }
    .faq-q {
      display: flex; justify-content: space-between; align-items: center;
      padding: 20px 24px; cursor: pointer;
      font-size: .95rem; font-weight: 600;
      user-select: none;
      transition: background var(--trans);
    }
    .faq-q:hover { background: rgba(193,127,62,.05); }
    .faq-icon {
      width: 26px; height: 26px; flex-shrink: 0;
      border-radius: 50%; background: var(--bg);
      display: flex; align-items: center; justify-content: center;
      font-size: .9rem; font-weight: 700; color: var(--accent);
      transition: transform var(--trans), background var(--trans);
    }
    .faq-item.open .faq-icon { transform: rotate(45deg); background: var(--accent); color: #fff; }
    .faq-a {
      max-height: 0; overflow: hidden;
      transition: max-height .35s ease, padding var(--trans);
      font-size: .88rem; color: var(--ink-light); line-height: 1.7;
    }
    .faq-item.open .faq-a { max-height: 400px; padding: 0 24px 22px; }

    /* ════════════════════════════════
       CTA BANNER
    ════════════════════════════════ */
    .cta-banner {
      background: linear-gradient(135deg, var(--accent2) 0%, #2d2d5e 100%);
      border-radius: 24px; padding: 72px 48px;
      text-align: center; color: #fff;
      position: relative; overflow: hidden;
    }
    .cta-banner::before {
      content: ''; position: absolute; inset: 0;
      background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='20'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
      pointer-events: none;
    }
    .cta-banner h2 { font-size: clamp(1.6rem,3.5vw,2.4rem); font-weight: 800; margin-bottom: 16px; }
    .cta-banner p { font-size: 1rem; opacity: .78; margin-bottom: 36px; max-width: 520px; margin-left: auto; margin-right: auto; }
    .btn-light {
      background: #fff; color: var(--ink);
      padding: 15px 40px; border-radius: 99px;
      font-size: .95rem; font-weight: 800;
      display: inline-block;
      transition: transform var(--trans), box-shadow var(--trans);
    }
    .btn-light:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0,0,0,.25); }

    /* ════════════════════════════════
       FOOTER
    ════════════════════════════════ */
    .site-footer {
      border-top: 1px solid var(--border);
      padding: 40px 20px; text-align: center;
      font-size: .8rem; color: var(--ink-light);
    }
    .footer-inner { max-width: var(--max); margin: 0 auto; }
    .footer-brand { font-weight: 800; font-size: .95rem; letter-spacing: .06em; margin-bottom: 10px; }
    .footer-brand span { color: var(--accent); }

    /* ════════════════════════════════
       LIGHTBOX
    ════════════════════════════════ */
    .lightbox {
      display: none; position: fixed; inset: 0; z-index: 999;
      background: rgba(10,10,20,.92);
      align-items: center; justify-content: center;
      cursor: zoom-out;
    }
    .lightbox.open { display: flex; }
    .lightbox img {
      max-width: 90vw; max-height: 90vh;
      border-radius: 10px; box-shadow: 0 24px 80px rgba(0,0,0,.6);
      object-fit: contain;
    }
    .lightbox-close {
      position: absolute; top: 20px; right: 24px;
      font-size: 2rem; color: #fff; cursor: pointer; opacity: .75;
      transition: opacity var(--trans);
    }
    .lightbox-close:hover { opacity: 1; }

    /* ════════════════════════════════
       RESPONSIVE
    ════════════════════════════════ */
    @media (max-width: 960px) {
      .hero-grid { grid-template-columns: 1fr; gap: 40px; }
      .gallery { position: static; }
      .sp-grid { grid-template-columns: repeat(2, 1fr); }
      .spec-two { grid-template-columns: 1fr; }
      .series-card { width: 380px; }
    }

    @media (max-width: 640px) {
      .section, .selling-points, .spec-section { padding: 48px 20px; }
      .nav-links { display: none; }
      .hamburger { display: flex; }
      .sp-grid { grid-template-columns: 1fr; }
      .gallery-thumbs { grid-template-columns: repeat(4, 1fr); }
      .series-card { width: 280px; }
      .detail-mosaic { grid-template-columns: 1fr; }
      .detail-mosaic .d-full { grid-column: auto; }
      .cta-banner { padding: 48px 24px; }
      .cta-row { flex-direction: column; }
      .btn-primary, .btn-secondary { justify-content: center; }
    }

    /* nav mobile toggle */
    .nav-mobile { display: none; flex-direction: column; gap: 2px; background: rgba(241,244,255,.97); padding: 12px 20px; border-bottom: 1px solid var(--border); }
    .nav-mobile a { padding: 11px 0; font-size: .9rem; font-weight: 600; border-bottom: 1px solid var(--border); color: var(--ink); }
    .nav-mobile a:last-child { border-bottom: none; }
    .nav-mobile.open { display: flex; }