/* ===== Global styles  ===== */
     *, *::before, *::after { box-sizing: border-box; }
     body { font-family: 'Inter', sans-serif; }

     /* Dropdown hover */
     .nav-item:hover .nav-dropdown { display: grid; }

     /* Product card equal-height helper */
     .product-card { display: flex; flex-direction: column; height: 100%; }

     /* Predictive search templates (kept inert) */
     .wishlist_table .add_to_cart,
     a.add_to_wishlist.button.alt {
       border-radius: 16px;
     }

     /* Tab system */
     .tab-panel { display: none; }
     .tab-panel.active { display: block; }
     .tab-btn.active { border-bottom: 2px solid #05a629; color: #05a629; }

    /* ===== DESIGN TOKENS ===== */
    :root {
      --black:      #080808;
      --deep:       #0f0f10;
      --charcoal:   #1a1a1e;
      --panel:      #141416;
      --gold:       #c8a96e;
      --gold-light: #e0c99a;
      --gold-dim:   #8a7049;
      --ivory:      #f5ede0;
      --cream:      #ede0cb;
      --white:      #ffffff;
      --muted:      #6b6860;
      --muted2:     #4a4845;
      --border:     rgba(200,169,110,.18);
      --border2:    rgba(200,169,110,.08);
      --font-serif: serif;
      --font-sans:  'DM Sans', sans-serif;
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    html { scroll-behavior: smooth; }

    body {
      background: var(--black);
      color: var(--ivory);
      font-family: var(--font-sans);
      font-weight: 300;
      -webkit-font-smoothing: antialiased;
      overflow-x: clip;
    }

    /* Áp dụng tự động cho bảng có class attributev */
    .attribute {
      width: 100%;
      table-layout: fixed; /* Ép bảng tuân thủ độ rộng cột */
      border-collapse: collapse;
      margin: 1rem 0;
    }

    /* Tự động định dạng cột đầu tiên (Cột tiêu đề thông số) */
    .attribute td:first-child {
      width: 30%; /* Cố định độ rộng cột trái */
      font-weight: 600;
      background-color: #f9fafb; /* Màu xám nhạt (gray-50) */
      padding: 12px;
      border: 1px solid #e5e7eb;
    }

    /* Tự động định dạng cột thứ hai (Nội dung chi tiết) */
    .attribute td:last-child {
      width: 70%;
      padding: 12px;
      border: 1px solid #e5e7eb;
    }

    /* Xử lý trường hợp hàng đặc biệt có colspan="2" (như chữ Đàn Piano) */
    .attribute td[colspan="2"] {
      width: 100%;
      text-align: center;
      background-color: #f3f4f6;
      font-weight: bold;
      text-transform: uppercase;
    }

    table {
      width: 100%;
      table-layout: fixed; /* Ép bảng tuân thủ độ rộng cột */
      border-collapse: collapse;
      margin: 1rem 0;
    }

    /* Tự động định dạng cột đầu tiên (Cột tiêu đề thông số) */
    table td:first-child {
      width: 30%; /* Cố định độ rộng cột trái */
      font-weight: 600;
      background-color: #f9fafb; /* Màu xám nhạt (gray-50) */
      padding: 12px;
      border: 1px solid #e5e7eb;
    }

    /* Tự động định dạng cột thứ hai (Nội dung chi tiết) */
    table td:last-child {
      width: 70%;
      padding: 12px;
      border: 1px solid #e5e7eb;
    }

    /* Xử lý trường hợp hàng đặc biệt có colspan="2" (như chữ Đàn Piano) */
    table td[colspan="2"] {
      width: 100%;
      text-align: center;
      background-color: #f3f4f6;
      font-weight: bold;
      text-transform: uppercase;
    }

    
    /* ===== TYPOGRAPHY ===== */
    .serif { font-family: var(--font-serif); }
    .gold { color: var(--gold); }

    /* ===== TOP BAR ===== */
    #top-bar {
      background: var(--deep);
      border-bottom: 1px solid var(--border2);
      padding: 10px 0;
      font-size: 12px;
      letter-spacing: 0.08em;
      color: var(--muted);
    }
    #top-bar .inner {
      max-width: 1380px;
      margin: auto;
      padding: 0 32px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
    }
    #top-bar a { color: var(--gold); text-decoration: none; transition: color .2s; }
    #top-bar a:hover { color: var(--gold-light); }
    .top-bar-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(200,169,110,.08);
      border: 1px solid var(--border);
      border-radius: 20px;
      padding: 4px 12px;
      font-size: 11px;
      letter-spacing: .1em;
      text-transform: uppercase;
    }

    /* ===== HEADER / NAV ===== */
    #header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(8,8,8,.92);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border2);
      transition: background .3s;
    }
    .header-inner {
      max-width: 1380px;
      margin: auto;
      padding: 0 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    /* Logo */
    .logo {
      display: flex;
      flex-direction: column;
      text-decoration: none;
      line-height: 1;
    }
    .logo-mark {
      font-family: var(--font-serif);
      font-weight: 400;
      color: var(--ivory);
      text-transform: uppercase;
    }
    .logo-mark span { color: var(--gold); }
    .logo-sub {
      text-transform: uppercase;
      color: var(--gold-dim);
      margin-top: 2px;
      padding-left: 2px;
    }

    /* Nav */
    .main-nav { display: flex; align-items: center; gap: 4px; }
    .nav-link {
      display: block;
      padding: 8px 16px;
      font-size: 13px;
      font-weight: 400;
      letter-spacing: 0.15em;
      text-transform: uppercase;
      color: var(--muted);
      text-decoration: none;
      position: relative;
      transition: color .2s;
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 4px;
      left: 16px;
      right: 16px;
      height: 1px;
      background: var(--gold);
      transform: scaleX(0);
      transition: transform .3s ease;
    }
    .nav-link:hover { color: var(--gold-light); }
    .nav-link:hover::after { transform: scaleX(1); }
    .nav-link.active { color: var(--gold); }
    .nav-link.active::after { transform: scaleX(1); }

    /* Post pagination UI (light mode) */
    .pagination {
      display: flex;
      justify-content: center;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      padding: 14px 0;
      margin-top: 26px;
      color: #1f2937;
    }
    .pagination a,
    .pagination span {
      display: inline-flex;
      justify-content: center;
      align-items: center;
      min-width: 34px;
      height: 34px;
      border-radius: 6px;
      font-size: 15px;
      line-height: 1;
      padding: 0 10px;
      border: 1px solid rgba(148,163,184,.35);
      text-decoration: none;
      color: #1f2937;
      background: #f8fafc;
      transition: all .25s ease;
      box-shadow: none;
    }
    .pagination a:hover {
      background: #fef3c7;
      border-color: var(--gold);
      color: #0f172a;
      transform: translateY(-1px);
      box-shadow: 0 2px 6px rgba(15,23,42,.12);
    }
    .pagination span {
        color: #ffffff;
        border-color: rgba(148, 163, 184, .25);
        background: #555555;
        font-weight: bold;
    }
    .page-numbers-2 {
      font-size: 20px;
      line-height: 11px;
      border-radius: 8px;
      padding: 5px 10px;
      min-width: auto;
      transition: transform .2s ease, background .2s ease;
    }
    .page-numbers-2:hover {
      background: rgba(255,255,255,.2);
      color: var(--ivory);
      transform: translateY(-1px);
    }
    .page-numbers-curent-2 {
      background: var(--gold);
      color: var(--black);
      border-color: var(--gold);
      font-weight: 700;
      box-shadow: 0 0 0 1px var(--gold);
    }
    .page-numbers-curent-2:hover {
      background: #e1b967;
      color: var(--black);
      transform: none;
    }

    /* CTA nav button */
    .nav-cta {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .btn-consult {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 9px 20px;
      border: 1px solid var(--border);
      border-radius: 2px;
      font-size: 11px;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--gold);
      text-decoration: none;
      background: transparent;
      transition: all .25s;
    }
    .btn-consult:hover {
      background: var(--gold);
      color: var(--black);
      border-color: var(--gold);
    }

    /* Search form */
    .search-form {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .search-input {
      padding: 9px 12px;
      border: 1px solid var(--border);
      border-radius: 2px;
      background: transparent;
      color: var(--ivory);
      font-size: 11px;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      outline: none;
      width: 150px;
      transition: border-color .2s;
    }
    .search-input::placeholder { color: var(--muted); }
    .search-input:focus { border-color: var(--gold); }
    .search-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 12px;
      border: 1px solid var(--border);
      border-radius: 2px;
      background: transparent;
      color: var(--gold);
      cursor: pointer;
      transition: all .25s;
      font-size: 12px;
    }
    .search-btn:hover {
      background: var(--gold);
      color: var(--black);
      border-color: var(--gold);
    }

    /* Hamburger */
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      padding: 8px;
      background: none;
      border: none;
    }
    .hamburger span {
      display: block;
      width: 24px;
      height: 1px;
      background: var(--ivory);
      transition: all .3s;
    }

    /* Mobile search toggle */
    .search-toggle {
      display: none;
      cursor: pointer;
      padding: 8px;
      background: none;
      border: none;
      color: var(--ivory);
      font-size: 14px;
      transition: color .2s;
    }
    .search-toggle:hover { color: var(--gold); }

    /* ===== HERO ===== */
    #hero {
      position: relative;
      width: 100%;
      height: 100vh;
      min-height: 700px;
      max-height: 960px;
      display: flex;
      align-items: flex-end;
      overflow: hidden;
    }

    /* Simulated hero background - a gradient evoking a concert grand */
    .hero-bg {
      position: absolute;
      inset: 0;
      background:
        radial-gradient(ellipse 60% 80% at 70% 50%, rgba(30,20,10,.3) 0%, transparent 70%),
        linear-gradient(135deg, #0a0a08 0%, #1a1208 40%, #0d0c08 100%);
    }
    /* Piano keys at bottom — purely decorative CSS art */
    .hero-keys-wrap {
      position: absolute;
      bottom: 0;
      right: 0;
      width: 55%;
      height: 100%;
      display: flex;
      align-items: flex-end;
      overflow: hidden;
    }
    .hero-keys {
      display: flex;
      align-items: flex-end;
      gap: 3px;
      padding-bottom: 0;
      width: 100%;
      height: 60%;
      mask-image: linear-gradient(to right, transparent 0%, black 25%, black 85%, transparent 100%),
                  linear-gradient(to top, black 0%, black 60%, transparent 100%);
      -webkit-mask-image: linear-gradient(to right, transparent 0%, black 25%, black 85%, transparent 100%),
                  linear-gradient(to top, black 0%, black 60%, transparent 100%);
      -webkit-mask-composite: destination-in;
      mask-composite: intersect;
    }
    .key-white {
      flex: 1;
      background: linear-gradient(to bottom, #e8e0d0, #c8b89a);
      border-radius: 0 0 5px 5px;
      min-height: 180px;
      position: relative;
      border: 1px solid rgba(0,0,0,.3);
      box-shadow: inset -2px 0 3px rgba(0,0,0,.15), 2px 4px 8px rgba(0,0,0,.4);
      animation: keyGlow 8s ease-in-out infinite alternate;
    }
    .key-white:nth-child(3n) { animation-delay: -2s; }
    .key-white:nth-child(5n) { animation-delay: -4s; }
    @keyframes keyGlow {
      0%   { filter: brightness(1); }
      50%  { filter: brightness(1.15) drop-shadow(0 0 8px rgba(200,169,110,.2)); }
      100% { filter: brightness(1); }
    }
    .key-black {
      position: absolute;
      width: 62%;
      height: 62%;
      background: linear-gradient(to bottom, #1a1a1a, #0a0a0a);
      border-radius: 0 0 4px 4px;
      top: 0;
      left: 50%;
      transform: translateX(-50%);
      z-index: 1;
      box-shadow: 2px 6px 10px rgba(0,0,0,.8);
    }
    /* Gold line accents behind keys */
    .hero-accent-line {
      position: absolute;
      width: 1px;
      background: linear-gradient(to bottom, transparent, var(--gold), transparent);
      animation: lineFloat 6s ease-in-out infinite;
    }
    @keyframes lineFloat {
      0%, 100% { opacity: .3; transform: translateY(0); }
      50%       { opacity: .7; transform: translateY(-12px); }
    }

    /* Gradient overlay left side */
    .hero-gradient-left {
      position: absolute;
      inset: 0;
      background: linear-gradient(to right, var(--black) 30%, transparent 65%);
      pointer-events: none;
    }
    .hero-gradient-bottom {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 300px;
      background: linear-gradient(to top, var(--black), transparent);
      pointer-events: none;
    }

    /* Hero content */
    .hero-content {
      position: relative;
      z-index: 10;
      max-width: 1380px;
      margin: auto;
      padding: 0 32px 100px;
      width: 100%;
    }
    .hero-eyebrow {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 28px;
      opacity: 0;
      animation: fadeUp .8s .3s forwards;
    }
    .hero-eyebrow-line {
      width: 40px;
      height: 1px;
      background: var(--gold);
    }
    .hero-eyebrow-text {
      font-size: 10px;
      letter-spacing: 0.35em;
      text-transform: uppercase;
      color: var(--gold);
      font-family: var(--font-sans);
    }
    .hero-title {
      font-family: var(--font-serif);
      font-weight: 300;
      font-size: clamp(54px, 7vw, 100px);
      line-height: 1.0;
      color: var(--ivory);
      margin-bottom: 6px;
      opacity: 0;
      animation: fadeUp .9s .5s forwards;
    }
    .hero-title em {
      font-style: italic;
      color: var(--gold);
    }
    .hero-subtitle {
      font-family: var(--font-serif);
      font-weight: 300;
      font-size: clamp(22px, 2.8vw, 36px);
      color: rgba(245,237,224,.5);
      margin-bottom: 36px;
      opacity: 0;
      animation: fadeUp .9s .7s forwards;
      font-style: italic;
    }
    .hero-desc {
      font-size: 14px;
      letter-spacing: 0.05em;
      color: var(--muted);
      line-height: 1.8;
      max-width: 420px;
      margin-bottom: 48px;
      opacity: 0;
      animation: fadeUp .9s .9s forwards;
    }
    .hero-actions {
      display: flex;
      align-items: center;
      gap: 24px;
      flex-wrap: wrap;
      opacity: 0;
      animation: fadeUp .9s 1.1s forwards;
    }
    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 15px 36px;
      background: var(--gold);
      color: var(--black);
      text-decoration: none;
      font-size: 11px;
      font-weight: 500;
      letter-spacing: 0.2em;
      text-transform: uppercase;
      border-radius: 2px;
      transition: all .3s;
      border: 1px solid var(--gold);
    }
    .btn-primary:hover {
      background: var(--gold-light);
      border-color: var(--gold-light);
      transform: translateY(-2px);
      box-shadow: 0 12px 40px rgba(200,169,110,.25);
    }
    .btn-ghost {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 15px 28px;
      background: transparent;
      color: var(--ivory);
      text-decoration: none;
      font-size: 11px;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      border-radius: 2px;
      transition: all .3s;
      border: 1px solid rgba(245,237,224,.2);
    }
    .btn-ghost:hover {
      border-color: var(--ivory);
      color: var(--white);
      transform: translateY(-2px);
    }

    /* Scroll indicator */
    .scroll-indicator {
      position: absolute;
      bottom: 36px;
      right: 15px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 8px;
      opacity: 0;
      animation: fadeIn 1s 1.5s forwards;
      z-index: 10;
    }
    .scroll-indicator span {
      font-size: 9px;
      letter-spacing: 0.3em;
      text-transform: uppercase;
      color: var(--muted);
      writing-mode: vertical-rl;
    }
    .scroll-line {
      width: 1px;
      height: 50px;
      background: linear-gradient(to bottom, var(--gold), transparent);
      animation: scrollPulse 2s ease-in-out infinite;
    }
    @keyframes scrollPulse {
      0%, 100% { opacity: .4; transform: scaleY(1); }
      50%       { opacity: 1;  transform: scaleY(1.2); }
    }

    /* ===== SECTION COMMON ===== */
    .section { padding: 100px 0; }
    .section-inner {
      max-width: 1380px;
      margin: auto;
      padding: 0 32px;
    }
    .section-label {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 20px;
    }
    .section-label-line { width: 32px; height: 1px; background: var(--gold); }
    .section-label-text {
      font-size: 10px;
      letter-spacing: 0.35em;
      text-transform: uppercase;
      color: var(--gold);
    }
    .section-title {
      font-family: var(--font-serif);
      font-weight: 300;
      font-size: clamp(34px, 4vw, 58px);
      line-height: 1.1;
      color: var(--ivory);
      margin-bottom: 16px;
    }
    .section-title em { font-style: italic; color: var(--gold); }
    .section-tagline {
      font-size: 14px;
      color: var(--muted);
      letter-spacing: 0.03em;
      line-height: 1.7;
      max-width: 480px;
    }
    .gold-divider {
      width: 60px;
      height: 1px;
      background: linear-gradient(to right, var(--gold), transparent);
      margin: 32px 0;
    }

    /* ===== MARQUEE BAR ===== */
    #marquee-bar {
      border-top: 1px solid var(--border2);
      border-bottom: 1px solid var(--border2);
      padding: 14px 0;
      overflow: hidden;
      white-space: nowrap;
    }
    .marquee-track {
      display: inline-flex;
      gap: 0;
      animation: marquee 25s linear infinite;
    }
    .marquee-item {
      display: inline-flex;
      align-items: center;
      gap: 20px;
      padding: 0 30px;
      font-size: 10px;
      letter-spacing: 0.3em;
      text-transform: uppercase;
      color: #8a8681;
    }
    .marquee-dot {
      width: 4px;
      height: 4px;
      border-radius: 50%;
      background: var(--gold);
      flex-shrink: 0;
    }
    @keyframes marquee {
      0%   { transform: translateX(0); }
      100% { transform: translateX(-50%); }
    }

    /* ===== CATEGORIES GRID ===== */
    #categories { background: var(--deep); padding: 100px 0; }
    .cat-grid {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      grid-template-rows: auto auto;
      gap: 2px;
    }
    .cat-card {
      position: relative;
      overflow: hidden;
      cursor: pointer;
      text-decoration: none;
      display: block;
      aspect-ratio: 4/3;
    }
    .cat-card:first-child {
      grid-column: 1 / 2;
      grid-row: 1 / 3;
      aspect-ratio: unset;
    }
    .cat-bg {
      position: absolute;
      inset: 0;
      transition: transform .8s cubic-bezier(.25,.46,.45,.94);
    }
    /* Placeholder gradients simulating piano photos */
    .cat-bg-grand    { background: linear-gradient(135deg, #0d0b08 0%, #2a1f0e 50%, #0d0b08 100%); }
    .cat-bg-upright  { background: linear-gradient(135deg, #080d0d 0%, #0e2424 50%, #080d0d 100%); }
    .cat-bg-digital  { background: linear-gradient(135deg, #0a0a10 0%, #151525 50%, #0a0a10 100%); }
    .cat-bg-baby     { background: linear-gradient(135deg, #0d0808 0%, #1a0e0e 50%, #0d0808 100%); }

    /* Simulated piano image using CSS shapes */
    .cat-illustration {
      position: absolute;
      inset: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      opacity: .35;
      transition: opacity .5s;
    }
    .cat-illustration svg { width: 60%; max-width: 180px; }
    .cat-card:hover .cat-illustration { opacity: .55; }

    .cat-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(8,8,8,.9) 0%, rgba(8,8,8,.3) 50%, transparent 100%);
      transition: background .4s;
    }
    .cat-card:hover .cat-overlay {
      background: linear-gradient(to top, rgba(8,8,8,.95) 0%, rgba(8,8,8,.5) 60%, rgba(8,8,8,.1) 100%);
    }
    .cat-card:hover .cat-bg { transform: scale(1.06); }
    .cat-content {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      padding: 32px 28px;
    }
    .cat-label {
      font-size: 9px;
      letter-spacing: 0.4em;
      text-transform: uppercase;
      color: var(--gold);
      margin-bottom: 8px;
    }
    .cat-name {
      font-family: var(--font-serif);
      font-weight: 300;
      font-size: clamp(26px, 3vw, 42px);
      color: var(--ivory);
      line-height: 1.1;
      margin-bottom: 12px;
    }
    .cat-arrow {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 10px;
      letter-spacing: 0.25em;
      text-transform: uppercase;
      color: var(--gold);
      opacity: 0;
      transform: translateY(8px);
      transition: all .35s;
    }
    .cat-arrow-line {
      width: 24px;
      height: 1px;
      background: var(--gold);
      transition: width .35s;
    }
    .cat-card:hover .cat-arrow { opacity: 1; transform: translateY(0); }
    .cat-card:hover .cat-arrow-line { width: 40px; }

    /* ===== PRODUCT SECTION ===== */
    #products { background: var(--black); padding: 100px 0; }
    .product-header {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      margin-bottom: 60px;
      flex-wrap: wrap;
      gap: 24px;
    }

    /* Filter tabs */
    .filter-tabs {
      display: flex;
      align-items: center;
      gap: 0;
      border: 1px solid var(--border);
      border-radius: 2px;
      overflow: hidden;
    }
    .filter-tab {
      padding: 10px 18px;
      font-size: 10px;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: var(--muted);
      background: transparent;
      border: none;
      cursor: pointer;
      transition: all .2s;
      border-right: 1px solid var(--border);
      font-family: var(--font-sans);
    }
    .filter-tab:last-child { border-right: none; }
    .filter-tab:hover { color: var(--gold); background: rgba(200,169,110,.05); }
    .filter-tab.active { background: var(--gold); color: var(--black); font-weight: 500; }

    /* Product grid */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1px;
      background: var(--border2);
    }

    /* Product card */
    .prod-card {
      background: var(--panel);
      text-decoration: none;
      display: flex;
      flex-direction: column;
      position: relative;
      overflow: hidden;
      transition: background .3s;
    }
    .prod-card:hover { background: var(--charcoal); }
    .prod-badge {
      position: absolute;
      top: 16px;
      left: 16px;
      z-index: 2;
      padding: 4px 10px;
      background: var(--gold);
      color: var(--black);
      font-size: 9px;
      letter-spacing: 0.2em;
      text-transform: uppercase;
      font-weight: 500;
      border-radius: 1px;
    }
    .prod-img-wrap {
      aspect-ratio: 1;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(255,255,255,.02);
      padding: 24px;
    }
    .prod-img-placeholder {
      width: 100%;
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .prod-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      transition: transform .6s cubic-bezier(.25,.46,.45,.94);
    }
    .prod-card:hover .prod-img-wrap img { transform: scale(1.06); }
    .prod-body {
      padding: 20px 20px 24px;
      border-top: 1px solid var(--border2);
      display: flex;
      flex-direction: column;
      gap: 8px;
      flex: 1;
    }
    .prod-serial {
      font-size: 10px;
      letter-spacing: 0.15em;
      color: var(--muted2);
      text-transform: uppercase;
    }
    .prod-name {
      font-family: var(--font-serif);
      font-weight: 400;
      font-size: 18px;
      color: var(--ivory);
      line-height: 1.3;
    }
    .prod-price-wrap {
      margin-top: auto;
      padding-top: 12px;
      border-top: 1px solid var(--border2);
      display: flex;
      align-items: baseline;
      gap: 12px;
    }
    .prod-price {
      font-family: var(--font-serif);
      font-size: 20px;
      font-weight: 400;
      color: var(--gold);
    }
    .prod-old-price {
      font-size: 13px;
      color: var(--muted2);
      text-decoration: line-through;
    }
    /* Hover CTA line */
    .prod-cta {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--gold);
      transform: scaleX(0);
      transition: transform .35s cubic-bezier(.25,.46,.45,.94);
      transform-origin: left;
    }
    .prod-card:hover .prod-cta { transform: scaleX(1); }

    /* View all link */
    .view-all-wrap {
      text-align: center;
      margin-top: 48px;
    }
    .link-underline {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-size: 11px;
      letter-spacing: 0.2em;
      text-transform: uppercase;
      color: var(--gold);
      text-decoration: none;
      position: relative;
      padding-bottom: 4px;
    }
    .link-underline::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 1px;
      background: var(--gold);
      transform: scaleX(.3);
      transform-origin: left;
      transition: transform .3s;
    }
    .link-underline:hover::after { transform: scaleX(1); }

    /* ===== SERIAL LOOKUP SECTION ===== */
    #serial-lookup {
      background: var(--charcoal);
      border-top: 1px solid var(--border2);
      border-bottom: 1px solid var(--border2);
      padding: 80px 0;
    }
    .lookup-inner {
      max-width: 1380px;
      margin: auto;
      padding: 0 32px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 80px;
      align-items: center;
    }
    .lookup-form {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .lookup-row {
      display: flex;
      gap: 12px;
    }
    .lookup-select, .lookup-input {
      flex: 1;
      padding: 14px 18px;
      background: rgba(255,255,255,.04);
      border: 1px solid var(--border);
      border-radius: 2px;
      color: var(--ivory);
      font-size: 13px;
      font-family: var(--font-sans);
      outline: none;
      transition: border-color .2s;
      appearance: none;
    }
    .lookup-select:focus, .lookup-input:focus {
      border-color: var(--gold);
    }
    .lookup-select option { background: var(--charcoal); }
    .lookup-input::placeholder { color: var(--muted2); }
    .lookup-btn {
      padding: 14px 32px;
      background: var(--gold);
      color: var(--black);
      border: none;
      border-radius: 2px;
      font-size: 11px;
      font-weight: 500;
      letter-spacing: 0.2em;
      text-transform: uppercase;
      cursor: pointer;
      font-family: var(--font-sans);
      transition: all .25s;
      white-space: nowrap;
    }
    .lookup-btn:hover { background: var(--gold-light); }

    /* ===== WHY US STRIP ===== */
    #why-us {
      background: var(--deep);
      padding: 80px 0;
      border-bottom: 1px solid var(--border2);
    }
    .why-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 0;
    }
    .why-item {
      padding: 48px 36px;
      border-right: 1px solid var(--border2);
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .why-item:last-child { border-right: none; }
    .why-icon {
      width: 44px;
      height: 44px;
      border: 1px solid var(--border);
      border-radius: 2px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--gold);
      font-size: 16px;
    }
    .why-title {
      font-family: var(--font-serif);
      font-size: 22px;
      font-weight: 400;
      color: var(--ivory);
      line-height: 1.2;
    }
    .why-desc {
      font-size: 13px;
      color: var(--muted);
      line-height: 1.75;
    }

    /* ===== FOOTER ===== */
    #footer {
      background: var(--deep);
      border-top: 1px solid var(--border2);
    }
    .footer-top {
      max-width: 1380px;
      margin: auto;
      padding: 80px 32px 60px;
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 60px;
    }
    .footer-brand-logo {
      font-family: var(--font-serif);
      font-size: 28px;
      font-weight: 300;
      letter-spacing: 0.2em;
      color: var(--ivory);
      text-transform: uppercase;
      margin-bottom: 4px;
    }
    .footer-brand-logo span { color: var(--gold); }
    .footer-brand-sub {
      font-size: 9px;
      letter-spacing: 0.35em;
      color: var(--gold-dim);
      text-transform: uppercase;
      margin-bottom: 24px;
    }
    .footer-desc {
      font-size: 13px;
      color: var(--muted);
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .footer-socials {
      display: flex;
      gap: 12px;
    }
    .social-btn {
      width: 36px;
      height: 36px;
      border: 1px solid var(--border);
      border-radius: 2px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--muted);
      text-decoration: none;
      font-size: 14px;
      transition: all .2s;
    }
    .social-btn:hover {
      color: var(--gold);
      border-color: var(--gold);
    }
    .footer-col-title {
      font-size: 10px;
      letter-spacing: 0.3em;
      text-transform: uppercase;
      color: var(--gold);
      margin-bottom: 28px;
      padding-bottom: 14px;
      border-bottom: 1px solid var(--border2);
    }
    .footer-links { display: flex; flex-direction: column; gap: 12px; }
    .footer-link {
      font-size: 13px;
      color: var(--muted);
      text-decoration: none;
      transition: color .2s;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-link:hover { color: var(--gold-light); }
    .footer-link-dot {
      width: 3px;
      height: 3px;
      border-radius: 50%;
      background: var(--gold-dim);
      flex-shrink: 0;
    }
    .footer-contact-item {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      margin-bottom: 18px;
      font-size: 13px;
      color: var(--muted);
    }
    .footer-contact-icon {
      color: var(--gold);
      font-size: 12px;
      margin-top: 2px;
      flex-shrink: 0;
      width: 16px;
    }
    .footer-contact-item a {
      color: var(--gold);
      text-decoration: none;
      transition: color .2s;
    }
    .footer-contact-item a:hover { color: var(--gold-light); }
    .footer-bottom {
      border-top: 1px solid var(--border2);
      padding: 24px 32px;
      max-width: 1380px;
      margin: auto;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .footer-copy {
      font-size: 12px;
      color: var(--muted2);
      letter-spacing: 0.05em;
    }
    .footer-legal {
      display: flex;
      gap: 24px;
    }
    .footer-legal a {
      font-size: 11px;
      letter-spacing: 0.08em;
      color: var(--muted2);
      text-decoration: none;
      transition: color .2s;
    }
    .footer-legal a:hover { color: var(--gold); }

    /* ===== SCROLL TO TOP ===== */
    #scrollTop {
      position: fixed;
      bottom: 32px;
      right: 32px;
      width: 44px;
      height: 44px;
      border: 1px solid var(--border);
      border-radius: 2px;
      background: rgba(8,8,8,.8);
      backdrop-filter: blur(10px);
      color: var(--gold);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      z-index: 999;
      opacity: 0;
      pointer-events: none;
      transition: all .3s;
      font-size: 12px;
    }
    #scrollTop.visible { opacity: 1; pointer-events: auto; }
    #scrollTop:hover { background: var(--gold); color: var(--black); }

    /* ===== ANIMATIONS ===== */
    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(20px); }
      to   { opacity: 1; transform: translateY(0); }
    }
    @keyframes fadeIn {
      from { opacity: 0; }
      to   { opacity: 1; }
    }
    /* ===== MAP ===== */
    .footer-map {
      border-radius: 2px;
      overflow: hidden;
      height: 140px;
      background: var(--charcoal);
      margin-top: 8px;
      border: 1px solid var(--border2);
    }
    .footer-map iframe { width: 100%; height: 100%; border: 0; filter: grayscale(1) invert(1) brightness(.6); }

    /* ===== MOBILE ===== */
    #mobile-menu {
      display: none;
      background: var(--deep);
      border-top: 1px solid var(--border2);
      padding: 20px 24px;
      flex-direction: column;
      gap: 4px;
    }
    #mobile-menu.open { display: flex; }
    .mobile-link {
      padding: 12px 0;
      font-size: 12px;
      letter-spacing: 0.15em;
      text-transform: uppercase;
      color: var(--muted);
      text-decoration: none;
      border-bottom: 1px solid var(--border2);
      transition: color .2s;
    }
    .mobile-link:hover,
    .mobile-link.active {
      color: var(--gold);
      font-weight: 600;
    }

    /* Mobile search */
    .mobile-search {
      padding: 12px 0;
      border-bottom: 1px solid var(--border2);
      margin-bottom: 4px;
    }
    .mobile-search-form {
      display: flex;
      gap: 8px;
    }
    .mobile-search-input {
      flex: 1;
      padding: 8px 12px;
      background: rgba(255,255,255,.04);
      border: 1px solid var(--border);
      border-radius: 2px;
      color: var(--ivory);
      font-size: 12px;
      outline: none;
      transition: border-color .2s;
    }
    .mobile-search-input::placeholder { color: var(--muted2); }
    .mobile-search-input:focus { border-color: var(--gold); }
    .mobile-search-btn {
      padding: 8px 12px;
      background: var(--gold);
      color: var(--black);
      border: none;
      border-radius: 2px;
      cursor: pointer;
      font-size: 12px;
      transition: background .25s;
    }
    .mobile-search-btn:hover { background: var(--gold-light); }

    /* Payment icons row */
    .payment-icons {
      display: flex;
      gap: 14px;
      margin-top: 12px;
      font-size: 24px;
      color: var(--muted2);
    }
    .payment-icons i { transition: color .2s; cursor: default; }
    .payment-icons i:hover { color: var(--gold); }

    @media (max-width: 1024px) {
      .cat-grid { grid-template-columns: 1fr 1fr; }
      .cat-card:first-child { grid-column: 1 / -1; grid-row: auto; aspect-ratio: 16/7; }
      .why-grid { grid-template-columns: 1fr 1fr; }
      .why-item { border-right: none; border-bottom: 1px solid var(--border2); }
      .footer-top { grid-template-columns: 1fr 1fr; gap: 40px; }
      .product-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 768px) {
      .main-nav { display: none; }
      .nav-cta  { display: none; }
      .hamburger { display: flex; }
      .search-toggle { display: flex; }
      .hero-content { padding: 0 20px 80px; }
      #hero { min-height: 600px; }
      .section-inner { padding: 0 20px; }
      .lookup-inner { grid-template-columns: 1fr; gap: 40px; }
      .lookup-row { flex-direction: column; }
      .cat-grid { grid-template-columns: 1fr; }
      .cat-card:first-child { aspect-ratio: 4/3; }
      .footer-top { grid-template-columns: 1fr; gap: 40px; padding: 48px 20px; }
      .footer-bottom { padding: 20px; }
      .why-grid { grid-template-columns: 1fr; }
      .filter-tabs { flex-wrap: wrap; }
      .header-inner { padding: 0 20px; }
      #top-bar .inner { padding: 0 15px; }
    }

    /* ── Sparkle ── */
    @keyframes sparkle{0%,100%{opacity:1;transform:scale(1) rotate(0deg)}50%{opacity:.3;transform:scale(.5) rotate(180deg)}}
    .sp{animation:sparkle 3s ease-in-out infinite}
    .sp2{animation-delay:1.5s}
    .sp3{animation-delay:.8s}

    /* ===== CUSTOM SCROLLBAR ===== */
    /* Force scrollbar visibility */
    html {
      overflow-y: scroll;
    }

    /* Webkit browsers (Chrome, Safari, Edge) */
    ::-webkit-scrollbar {
      width: 12px;
      height: 12px;
    }
    ::-webkit-scrollbar-track {
      background: var(--deep);
      border-radius: 6px;
    }
    ::-webkit-scrollbar-thumb {
      background: linear-gradient(180deg, var(--gold) 0%, var(--gold-dim) 100%);
      border-radius: 6px;
      border: 2px solid var(--deep);
      transition: background .3s ease;
    }
    ::-webkit-scrollbar-thumb:hover {
      background: linear-gradient(180deg, var(--gold-light) 0%, var(--gold) 100%);
      border-color: var(--charcoal);
    }
    ::-webkit-scrollbar-thumb:active {
      background: var(--gold-light);
    }
    ::-webkit-scrollbar-corner {
      background: var(--deep);
    }

    /* Firefox */
    * {
      scrollbar-width: thin;
      scrollbar-color: var(--gold) var(--deep);
    }

    /* ===== END CUSTOM SCROLLBAR ===== */

    /* Ẩn tất cả các panel mặc định */
    .js-tab-panel {
      display: none;
    }
    /* Chỉ hiển thị panel có class active */
    .js-tab-panel.active {
      display: block !important;
    }
    /* Style bổ trợ để làm nổi bật tab đang được chọn */
    .js-tab-btn.active {
      color: #5b3a11 !important;
      border-color: #b76e14 !important;
    }