:root {
    --ink: #0a1628;
    --deep: #0d2340;
    --abyss: #061421;
    --reef: #00a896;
    --coral: #ff6b4a;
    --sand: #f4ede4;
    --paper: #fafaf7;
    --line: rgba(10, 22, 40, 0.08);
    --muted: #5a6b7d;
    --display: 'Fraunces', Georgia, serif;
    --body: 'Inter', system-ui, sans-serif;
  }

  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; scroll-padding-top: 80px; }
  body {
    font-family: var(--body);
    color: var(--ink);
    background: var(--paper);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  /* ===== NAV ===== */
  nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 100;
    background: rgba(10, 22, 40, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: background 0.3s;
  }
  /* When scrolled past hero, nav becomes more solid */
  nav.scrolled {
    background: rgba(10, 22, 40, 0.94);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }
  .nav-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 12px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .logo {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    height: 36px;
  }
  .logo img {
    height: 100%;
    width: auto;
    display: block;
  }
  .logo .logo-light { display: block; }
  .logo .logo-dark { display: none; }
  .nav-links {
    display: flex;
    gap: 36px;
    list-style: none;
  }
  .nav-links > li {
    position: relative;
  }
  .nav-links > li > a {
    color: var(--paper);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 0;
    cursor: pointer;
  }
  .nav-links > li > a::after {
    content: '';
    width: 8px; height: 8px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(45deg) translate(-2px, -2px);
    transition: transform 0.2s;
    opacity: 0.5;
  }
  .nav-links > li.no-dropdown > a::after { display: none; }
  .nav-links > li:hover > a {
    color: var(--reef);
  }
  .nav-links > li:hover > a::after {
    transform: rotate(225deg) translate(-2px, -2px);
    opacity: 1;
  }

  /* MEGA MENU - Bambu Lab style: full-width horizontal */
  .dropdown {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    width: 100%;
    background: #f5f5f5;
    box-shadow: 0 16px 40px rgba(10, 22, 40, 0.12);
    padding: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.25s, visibility 0.25s, transform 0.25s;
    z-index: 90;
    border-top: 1px solid rgba(10, 22, 40, 0.06);
  }
  /* invisible bridge so cursor can travel from nav to dropdown */
  .dropdown::before {
    content: '';
    position: absolute;
    top: -10px;
    left: 0;
    right: 0;
    height: 10px;
  }
  .nav-links > li:hover .dropdown,
  .nav-links > li:focus-within .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  /* Inner container with max-width */
  .dropdown-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 40px 48px;
    display: grid;
    grid-template-columns: repeat(var(--cols, 3), 1fr);
    gap: 32px;
  }
  /* Items lay out horizontally — image on top, text below */
  .dropdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    text-decoration: none;
    color: var(--ink);
    padding: 16px;
    border-radius: 12px;
    transition: background 0.2s, transform 0.2s;
  }
  .dropdown-item:hover {
    background: rgba(10, 22, 40, 0.04);
  }
  .dropdown-thumb {
    width: 100%;
    aspect-ratio: 16 / 11;
    border-radius: 10px;
    background: linear-gradient(160deg, #0a3d5e 0%, #062942 100%);
    overflow: hidden;
    display: grid;
    place-items: center;
    margin-bottom: 18px;
    transition: transform 0.3s;
  }
  .dropdown-item:hover .dropdown-thumb {
    transform: translateY(-3px);
  }
  .dropdown-item.coral .dropdown-thumb {
    background: linear-gradient(160deg, #ff6b4a 0%, #e8533a 100%);
  }
  .dropdown-item.purple .dropdown-thumb {
    background: linear-gradient(160deg, #9b59b6 0%, #6c3483 100%);
  }
  .dropdown-item.dark .dropdown-thumb {
    background: linear-gradient(160deg, #1a2540 0%, #0a1628 100%);
  }
  .dropdown-item.sand .dropdown-thumb {
    background: linear-gradient(160deg, #d4c5a8 0%, #a8956f 100%);
  }
  .dropdown-thumb svg {
    width: 70%;
    height: 70%;
    color: rgba(255, 255, 255, 0.9);
  }
  .dropdown-name {
    font-family: var(--display);
    font-size: 19px;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 6px;
    color: var(--ink);
  }
  .dropdown-desc {
    font-size: 13px;
    color: var(--muted);
    line-height: 1.4;
    max-width: 280px;
  }

  /* Mega menu auto-scales: dropdown sets cols via CSS variable */
  .dropdown.cols-3 { --cols: 3; }
  .dropdown.cols-4 { --cols: 4; }
  .dropdown.cols-6 { --cols: 6; }

  /* Horizontal layout: items as image-left, text-right rows (Bambu style) */
  .dropdown.horizontal .dropdown-inner {
    column-gap: 24px;
    row-gap: 12px;
  }
  .dropdown.horizontal .dropdown-item {
    flex-direction: row;
    text-align: left;
    align-items: center;
    gap: 18px;
    padding: 14px;
  }
  .dropdown.horizontal .dropdown-thumb {
    width: 110px;
    height: 78px;
    aspect-ratio: auto;
    margin-bottom: 0;
    flex-shrink: 0;
  }
  .dropdown.horizontal .dropdown-item:hover .dropdown-thumb {
    transform: translateY(0) scale(1.03);
  }
  .dropdown.horizontal .dropdown-name {
    font-size: 17px;
    margin-bottom: 4px;
  }
  .dropdown.horizontal .dropdown-desc {
    max-width: none;
    font-size: 13px;
  }

  /* Active link underline (Bambu-style) */
  .nav-links > li.active > a,
  .nav-links > li:hover > a {
    color: var(--paper);
  }
  .nav-links > li > a {
    position: relative;
  }
  .nav-links > li:hover > a::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 18px;
    height: 2px;
    background: var(--reef);
    border-radius: 2px;
  }
  .nav-links > li.no-dropdown:hover > a::before {
    right: 0;
  }

  .nav-actions {
    display: flex;
    gap: 14px;
    align-items: center;
  }
  .nav-phone {
    font-size: 13px;
    font-weight: 600;
    color: var(--reef);
    text-decoration: none;
    padding: 7px 14px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 100px;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }
  .nav-phone:hover { background: var(--reef); color: var(--paper); border-color: var(--reef); }
  .icon-btn {
    width: 34px; height: 34px;
    border-radius: 50%;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.18);
    cursor: pointer;
    display: grid; place-items: center;
    transition: all 0.2s;
    color: var(--paper);
  }
  .icon-btn:hover { background: rgba(255, 255, 255, 0.12); border-color: rgba(255, 255, 255, 0.4); }
  .icon-btn svg { width: 15px; height: 15px; }

  /* Store button (Bambu-style) */
  .store-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--reef);
    color: var(--paper);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    padding: 9px 22px;
    border-radius: 8px;
    transition: all 0.25s;
    border: 1px solid var(--reef);
    white-space: nowrap;
  }
  .store-btn:hover {
    background: #00bfaa;
    border-color: #00bfaa;
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(0, 168, 150, 0.35);
  }
  .store-btn svg { width: 14px; height: 14px; }

  /* ===== HERO CAROUSEL - Red Sea Reefer style ===== */
  .hero {
    position: relative;
    height: 100vh;
    min-height: 720px;
    max-height: 1000px;
    overflow: hidden;
    background: var(--abyss);
    display: flex;
    flex-direction: column;
  }

  .slides {
    position: relative;
    flex: 1;
    overflow: hidden;
  }

  .slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    pointer-events: none;
    transition: opacity 1s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: stretch;
  }
  .slide.active {
    opacity: 1;
    pointer-events: auto;
    z-index: 2;
  }

  /* Full-bleed background image (or SVG) */
  .slide-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
  }
  .slide-bg svg,
  .slide-bg img,
  .slide-bg picture {
    width: 100%;
    height: 100%;
    display: block;
  }
  .slide-bg img,
  .slide-bg svg {
    object-fit: cover;
  }
  .slide-bg picture {
    position: absolute;
    inset: 0;
  }
  .slide-bg picture img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  /* Gradient overlay for text readability */
  .slide-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
      90deg,
      rgba(10, 22, 40, 0.85) 0%,
      rgba(10, 22, 40, 0.55) 35%,
      rgba(10, 22, 40, 0.15) 60%,
      rgba(10, 22, 40, 0.4) 100%
    );
    z-index: 1;
    pointer-events: none;
  }
  /* Subtle zoom on active slide */
  .slide.active .slide-bg svg,
  .slide.active .slide-bg picture img,
  .slide.active .slide-bg img {
    animation: slowZoom 12s ease-out forwards;
  }
  @keyframes slowZoom {
    from { transform: scale(1.0); }
    to { transform: scale(1.05); }
  }

  /* Content overlay (left side) */
  .slide-content-wrap {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    align-items: center;
    color: var(--paper);
  }

  .slide-content {
    max-width: 580px;
    padding: 100px 0 200px;
  }

  .slide-badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    background: var(--reef);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.05em;
    border-radius: 6px;
    margin-bottom: 28px;
    opacity: 0;
    transform: translateY(20px);
  }

  .slide h1 {
    font-family: var(--display);
    font-size: clamp(48px, 5.6vw, 84px);
    line-height: 1.05;
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: 18px;
    color: var(--paper);
    opacity: 0;
    transform: translateY(30px);
  }
  .slide h1 em {
    font-style: italic;
    font-weight: 400;
    color: var(--reef);
  }

  .slide-tagline {
    font-family: var(--display);
    font-size: clamp(20px, 1.6vw, 26px);
    font-weight: 400;
    line-height: 1.3;
    color: rgba(250, 250, 247, 0.92);
    margin-bottom: 24px;
    opacity: 0;
    transform: translateY(30px);
  }

  .slide-desc {
    font-size: 16px;
    line-height: 1.65;
    color: rgba(250, 250, 247, 0.75);
    max-width: 520px;
    margin-bottom: 36px;
    opacity: 0;
    transform: translateY(30px);
  }

  .slide-cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    background: var(--reef);
    color: #fff;
    text-decoration: none;
    border-radius: 100px;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s;
    opacity: 0;
    transform: translateY(30px);
  }
  .slide-cta:hover {
    background: #007d6f;
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(0, 168, 150, 0.4);
  }
  .slide-cta svg { transition: transform 0.3s; }
  .slide-cta:hover svg { transform: translateX(4px); }

  /* Entry animations */
  .slide.active .slide-badge { animation: slideUp 0.6s 0.2s forwards; }
  .slide.active h1 { animation: slideUp 0.7s 0.35s forwards; }
  .slide.active .slide-tagline { animation: slideUp 0.7s 0.5s forwards; }
  .slide.active .slide-desc { animation: slideUp 0.7s 0.65s forwards; }
  .slide.active .slide-cta { animation: slideUp 0.6s 0.8s forwards; }

  @keyframes slideUp {
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* TAB NAVIGATION at bottom (Red Sea / Bambu hybrid) */
  .slide-tabs {
    position: relative;
    z-index: 5;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.85));
    padding: 32px 40px 28px;
    margin-top: -120px;
    align-items: stretch;
  }
  .slide-tab {
    background: transparent;
    border: none;
    color: rgba(250, 250, 247, 0.55);
    text-align: left;
    cursor: pointer;
    padding: 18px 24px 4px;
    transition: color 0.3s;
    position: relative;
    font-family: inherit;
  }
  .slide-tab:hover { color: rgba(250, 250, 247, 0.85); }
  .slide-tab.active { color: var(--paper); }
  .tab-bar {
    height: 2px;
    background: rgba(255, 255, 255, 0.2);
    margin-bottom: 14px;
    transition: background 0.3s, height 0.3s;
    border-radius: 2px;
  }
  .slide-tab.active .tab-bar {
    background: var(--paper);
    height: 3px;
  }
  .tab-title {
    font-family: var(--body);
    font-size: 16px;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 6px;
  }
  .slide-tab.active .tab-title { color: var(--paper); }
  .tab-desc {
    font-size: 13px;
    line-height: 1.4;
    color: rgba(250, 250, 247, 0.55);
  }
  .slide-tab.active .tab-desc { color: rgba(250, 250, 247, 0.85); }

  /* ===== SHOWCASE GRID (4-up dưới hero - Bambu style) ===== */
  .showcase {
    background: var(--paper);
    padding: 0;
  }
  .showcase-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
    background: rgba(10, 22, 40, 0.06);
    max-width: 100%;
    margin: 0;
  }
  .showcase-card {
    position: relative;
    background: #f5f5f5;
    padding: 36px 48px 28px;
    min-height: 360px;
    overflow: hidden;
    text-decoration: none;
    color: var(--ink);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: background 0.3s;
    cursor: pointer;
  }
  .showcase-card:hover { background: #ececec; }

  .showcase-tag {
    font-size: 13px;
    color: var(--muted);
    font-weight: 500;
    margin-bottom: 8px;
    letter-spacing: 0.01em;
  }

  .showcase-title {
    font-family: var(--display);
    font-size: clamp(22px, 2vw, 30px);
    line-height: 1.15;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 14px;
    max-width: 90%;
    color: var(--ink);
  }
  .showcase-title em {
    font-style: italic;
    font-weight: 500;
  }

  .showcase-links {
    display: flex;
    gap: 24px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    justify-content: center;
  }
  .showcase-link {
    color: var(--reef);
    font-weight: 600;
    text-decoration: none;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.2s;
  }
  .showcase-link:hover { gap: 12px; }

  .showcase-visual {
    margin-top: auto;
    width: 100%;
    max-width: 320px;
    aspect-ratio: 1.7 / 1;
    position: relative;
    transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
  }
  .showcase-card:hover .showcase-visual {
    transform: translateY(-4px);
  }
  .showcase-visual svg {
    width: 100%;
    height: 100%;
    display: block;
  }

  /* ===== MARQUEE ===== */
  .marquee {
    background: var(--ink);
    color: var(--paper);
    overflow: hidden;
    padding: 22px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
  }
  .marquee-track {
    display: flex;
    gap: 60px;
    animation: scroll 40s linear infinite;
    white-space: nowrap;
    width: max-content;
  }
  .marquee-track span {
    font-family: var(--display);
    font-size: 22px;
    font-style: italic;
    font-weight: 400;
  }
  .marquee-track span::after {
    content: '✦';
    color: var(--reef);
    margin-left: 60px;
    font-style: normal;
  }
  @keyframes scroll {
    to { transform: translateX(-50%); }
  }

  /* ===== SECTIONS ===== */
  section.block { padding: 100px 32px; }
  .container { max-width: 1400px; margin: 0 auto; }
  .section-head {
    margin-bottom: 60px;
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: 40px;
    flex-wrap: wrap;
  }
  .section-eyebrow {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--reef);
    font-weight: 600;
    margin-bottom: 16px;
  }
  .section-title {
    font-family: var(--display);
    font-size: clamp(36px, 4.5vw, 60px);
    line-height: 1;
    font-weight: 400;
    letter-spacing: -0.02em;
    max-width: 700px;
  }
  .section-title em { font-style: italic; color: var(--reef); }
  .section-sub {
    color: var(--muted);
    font-size: 16px;
    max-width: 380px;
    line-height: 1.6;
  }

  /* ===== PRODUCT GRID ===== */
  .products { background: var(--paper); }
  .product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .product-card {
    position: relative;
    border-radius: 20px;
    padding: 40px;
    overflow: hidden;
    min-height: 480px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
    cursor: pointer;
  }
  .product-card:hover { transform: translateY(-6px); }
  .product-card.featured {
    grid-column: span 2;
    min-height: 520px;
    background: linear-gradient(135deg, #0a1628 0%, #0d2340 60%, #0a3d5e 100%);
    color: var(--paper);
  }
  .product-card.dark { background: linear-gradient(160deg, #0d2340 0%, #061421 100%); color: var(--paper); }
  .product-card.light { background: var(--sand); color: var(--ink); }
  .product-card.coral { background: linear-gradient(160deg, #ff6b4a 0%, #e8533a 100%); color: var(--paper); }

  .product-tag {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    width: fit-content;
  }
  .product-card.light .product-tag { background: rgba(10,22,40,0.08); }
  .product-name {
    font-family: var(--display);
    font-size: clamp(28px, 3.5vw, 44px);
    line-height: 1;
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-top: 16px;
  }
  .product-name em { font-style: italic; font-weight: 400; }
  .product-desc {
    margin-top: 16px;
    font-size: 15px;
    line-height: 1.6;
    opacity: 0.8;
    max-width: 420px;
  }
  .product-bottom {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: 20px;
    margin-top: 32px;
  }
  .product-price {
    font-family: var(--display);
    font-size: 28px;
    font-weight: 500;
  }
  .product-price small {
    font-size: 13px;
    font-family: var(--body);
    opacity: 0.6;
    font-weight: 400;
    display: block;
    margin-bottom: 2px;
  }
  .product-arrow {
    width: 44px; height: 44px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    display: grid; place-items: center;
    transition: all 0.3s;
  }
  .product-card.light .product-arrow { background: rgba(10,22,40,0.08); }
  .product-card:hover .product-arrow {
    background: var(--reef);
    transform: rotate(-45deg);
  }
  .product-arrow svg { width: 18px; height: 18px; }

  /* ===== CATEGORIES ===== */
  .categories { background: var(--ink); color: var(--paper); }
  .cat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: rgba(255,255,255,0.1);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.1);
  }
  .cat-item {
    background: var(--ink);
    padding: 40px 28px;
    transition: all 0.3s;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    display: block;
  }
  .cat-item:hover { background: var(--deep); }
  .cat-icon {
    width: 56px; height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--reef), #007d6f);
    display: grid; place-items: center;
    margin-bottom: 24px;
  }
  .cat-icon svg { width: 28px; height: 28px; color: var(--paper); }
  .cat-name {
    font-family: var(--display);
    font-size: 22px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--paper);
  }
  .cat-count { font-size: 13px; color: rgba(250,250,247,0.5); }
  .cat-arrow {
    position: absolute;
    bottom: 28px;
    right: 28px;
    opacity: 0;
    transition: all 0.3s;
  }
  .cat-item:hover .cat-arrow { opacity: 1; transform: translateX(4px); }

  /* "Xem tất cả" button — only visible on mobile */
  .cat-view-all {
    display: none;
    margin: 28px auto 0;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 28px;
    background: rgba(0, 168, 150, 0.12);
    border: 1px solid rgba(0, 168, 150, 0.4);
    color: var(--reef);
    border-radius: 100px;
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    transition: all 0.25s;
    width: fit-content;
  }
  .cat-view-all:hover {
    background: rgba(0, 168, 150, 0.2);
    border-color: var(--reef);
  }

  /* ===== FEATURE ===== */
  .feature { background: var(--paper); }
  .feature-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 80px;
    align-items: center;
  }
  .feature-img {
    aspect-ratio: 1 / 1.1;
    border-radius: 24px;
    background: linear-gradient(180deg, #0a3d5e 0%, #062942 100%);
    overflow: hidden;
    position: relative;
    box-shadow: 0 30px 60px rgba(10,22,40,0.2);
  }
  .feature h2 {
    font-family: var(--display);
    font-size: clamp(36px, 4.5vw, 56px);
    line-height: 1;
    font-weight: 400;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
  }
  .feature h2 em { font-style: italic; color: var(--reef); }
  .feature p {
    color: var(--muted);
    font-size: 17px;
    line-height: 1.7;
    margin-bottom: 32px;
    max-width: 480px;
  }
  .feature-list { list-style: none; margin-bottom: 36px; }
  .feature-list li {
    padding: 18px 0;
    border-top: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 15px;
  }
  .feature-list li:last-child { border-bottom: 1px solid var(--line); }
  .feature-list strong { font-weight: 500; }
  .feature-list span {
    font-family: var(--display);
    font-size: 18px;
    font-weight: 500;
    color: var(--reef);
  }

  /* ===== TESTIMONIAL ===== */
  .testi {
    background: linear-gradient(180deg, var(--paper) 0%, var(--sand) 100%);
    text-align: center;
  }
  .testi-quote {
    font-family: var(--display);
    font-size: clamp(28px, 3vw, 42px);
    line-height: 1.2;
    font-weight: 400;
    letter-spacing: -0.01em;
    max-width: 900px;
    margin: 0 auto 40px;
  }
  .testi-quote em { color: var(--reef); }
  .testi-author { font-size: 14px; color: var(--muted); }
  .testi-author strong { color: var(--ink); font-weight: 600; }

  /* ===== CONTACT ===== */
  .contact {
    background: var(--ink);
    color: var(--paper);
  }
  .contact-grid {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 80px;
    align-items: center;
  }
  .contact h2 {
    font-family: var(--display);
    font-size: clamp(44px, 5.5vw, 72px);
    line-height: 1;
    font-weight: 400;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
  }
  .contact h2 em { color: var(--reef); font-style: italic; }
  .contact > .container > .contact-grid > div:first-child > p {
    color: rgba(250,250,247,0.65);
    max-width: 560px;
    margin-bottom: 36px;
    font-size: 17px;
    line-height: 1.6;
  }
  .contact-cards { display: grid; gap: 14px; }
  .contact-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    text-decoration: none;
    color: var(--paper);
    transition: all 0.3s;
  }
  .contact-card:hover {
    background: rgba(0,168,150,0.08);
    border-color: var(--reef);
    transform: translateX(6px);
  }
  .contact-icon {
    width: 52px; height: 52px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--reef), #007d6f);
    display: grid; place-items: center;
    flex-shrink: 0;
  }
  .contact-icon svg { width: 24px; height: 24px; color: var(--paper); }
  .contact-card.facebook .contact-icon { background: linear-gradient(135deg, #1877F2, #0d5dbd); }
  .contact-card.zalo .contact-icon { background: linear-gradient(135deg, #0068FF, #0049b3); }
  .contact-card.maps .contact-icon { background: linear-gradient(135deg, #ea4335, #c5392c); }
  .contact-card .label {
    font-size: 12px;
    color: rgba(250,250,247,0.5);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 4px;
  }
  .contact-card .value {
    font-family: var(--display);
    font-size: 20px;
    font-weight: 500;
    line-height: 1.2;
  }

  /* ===== FOOTER ===== */
  footer {
    background: var(--abyss);
    color: var(--paper);
    padding: 80px 32px 32px;
  }
  .foot-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2.4fr 1fr 1fr;
    gap: 80px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .foot-brand .logo { margin-bottom: 20px; height: 48px; }
  .foot-brand p {
    color: rgba(250,250,247,0.5);
    font-size: 14px;
    line-height: 1.7;
    max-width: 480px;
  }
  .foot-col h4 {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--reef);
    margin-bottom: 20px;
    font-weight: 600;
  }
  .foot-col ul { list-style: none; }
  .foot-col li { margin-bottom: 12px; }
  .foot-col a {
    color: rgba(250,250,247,0.7);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
  }
  .foot-col a:hover { color: var(--reef); }
  .foot-address {
    color: rgba(250,250,247,0.7);
    font-size: 14px;
    line-height: 1.6;
  }

  /* Social icons in footer brand column */
  .foot-social {
    display: flex;
    gap: 10px;
    margin-top: 24px;
  }
  .foot-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    display: grid;
    place-items: center;
    color: rgba(250,250,247,0.8);
    transition: all 0.25s;
  }
  .foot-social a:hover {
    background: var(--reef);
    border-color: var(--reef);
    color: var(--ink);
    transform: translateY(-2px);
  }

  .foot-bottom {
    max-width: 1400px;
    margin: 32px auto 0;
    display: flex;
    justify-content: space-between;
    color: rgba(250,250,247,0.4);
    font-size: 13px;
    flex-wrap: wrap;
    gap: 20px;
  }

  /* RESPONSIVE */
  /* ===== HAMBURGER MENU ===== */
  .hamburger {
    display: none;
    width: 34px; height: 34px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 50%;
    background: transparent;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 4px;
    padding: 0;
  }
  .hamburger span {
    width: 18px; height: 2px;
    background: var(--paper);
    transition: all 0.3s;
    border-radius: 2px;
  }
  .hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .hamburger.open span:nth-child(2) { opacity: 0; }
  .hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

  /* Mobile menu drawer */
  .mobile-menu {
    position: fixed;
    top: 48px;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    background: var(--paper);
    z-index: 95;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 8px 24px 40px;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
    visibility: hidden;
  }
  .mobile-menu.open { transform: translateX(0); visibility: visible; }
  .mobile-menu-section {
    border-bottom: 1px solid var(--line);
    background: var(--paper);
  }
  .mobile-menu-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    font-family: var(--body);
    font-size: 17px;
    font-weight: 600;
    cursor: pointer;
    padding: 22px 4px;
    color: var(--ink);
    text-decoration: none;
    user-select: none;
  }
  .mobile-menu-title svg { width: 18px; height: 18px; transition: transform 0.3s; color: var(--ink); }
  .mobile-menu-section.expanded .mobile-menu-title svg { transform: rotate(180deg); }
  .mobile-submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
  }
  .mobile-menu-section.expanded .mobile-submenu { max-height: 800px; padding-bottom: 16px; }
  .mobile-submenu a {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 8px;
    border-radius: 10px;
    text-decoration: none;
    color: var(--ink);
    margin-bottom: 4px;
  }
  .mobile-submenu a:active { background: var(--sand); }
  .mobile-submenu .dropdown-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--reef), #007d6f);
    display: grid;
    place-items: center;
    flex-shrink: 0;
    color: var(--paper);
  }
  .mobile-submenu .dropdown-icon svg { width: 18px; height: 18px; }
  .mobile-submenu .dropdown-name {
    font-family: var(--body);
    font-size: 15px;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 2px;
    color: var(--ink);
  }
  .mobile-submenu .dropdown-desc {
    font-size: 12px;
    color: var(--muted);
    line-height: 1.3;
  }

  /* Footer area in drawer — single subtle Login-style link like Bambu */
  .mobile-contact {
    margin-top: 24px;
    padding-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 0;
  }
  .mobile-contact a {
    padding: 18px 4px;
    background: transparent;
    color: var(--ink);
    border-radius: 0;
    text-align: left;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    border-bottom: 1px solid var(--line);
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .mobile-contact a:last-child { border-bottom: none; }
  .mobile-contact a.coral { background: transparent; color: var(--ink); }

  /* ===== RESPONSIVE ===== */

  /* Laptop nhỏ / MacBook Air (1280px) — fit gọn cho viewport 1280-1440 */
  @media (max-width: 1280px) {
    .nav-inner { padding: 12px 24px; max-width: 100%; }
    .nav-links { gap: 26px; }
    .nav-links > li > a { font-size: 13px; }
    .nav-phone { font-size: 12px; padding: 7px 14px; }
    .store-btn { padding: 8px 18px; font-size: 13px; }

    .slide-grid {
      gap: 36px;
      padding: 80px 32px 80px;
      max-width: 100%;
    }
    .slide h1 { font-size: clamp(36px, 4.2vw, 56px); }
    .slide-sub { font-size: 16px; max-width: 440px; }
    .slide-eyebrow { margin-bottom: 18px; }

    .container { padding: 0; max-width: 100%; }
    section.block { padding: 80px 32px; }
    .section-title { font-size: clamp(32px, 3.5vw, 48px); }

    .product-card { padding: 32px; min-height: 420px; }
    .product-name { font-size: clamp(26px, 2.8vw, 36px); }

    .feature-grid { gap: 50px; }
    .feature h2 { font-size: clamp(32px, 3.5vw, 44px); }

    .showcase-card { padding: 32px 36px 24px; min-height: 320px; }
    .showcase-title { font-size: clamp(22px, 2.2vw, 30px); }
  }

  /* Tablet (1024px) */
  @media (max-width: 1024px) {
    .nav-inner { padding: 14px 20px; }
    .nav-links { gap: 18px; }
    .nav-links > li > a { font-size: 12px; }
    .nav-phone { display: none; }
    .icon-btn[aria-label="Search"] { display: none; }

    /* Mega menu shrinks - 4 cols max on tablet */
    .dropdown.cols-6 { --cols: 3; }
    .dropdown-inner { padding: 32px 24px; gap: 20px; }
    .dropdown-name { font-size: 16px; }
    .dropdown-desc { font-size: 12px; }

    .slide-grid {
      gap: 32px;
      padding: 80px 24px 60px;
      grid-template-columns: 1fr 1fr;
    }
    .slide h1 { font-size: clamp(32px, 4vw, 44px); }
    .slide-sub { font-size: 15px; }
    .slide-spec-card { gap: 16px; padding: 12px 14px; }
    .spec-item .spec-num { font-size: 18px; }

    section.block { padding: 70px 24px; }
    .section-head { margin-bottom: 40px; }
    .section-title { font-size: clamp(28px, 3.5vw, 42px); }

    .product-card { padding: 28px; min-height: 380px; }
    .cat-grid { grid-template-columns: repeat(3, 1fr); }
    .feature-grid { gap: 40px; }
    .foot-grid { gap: 36px; }

    .showcase-card { padding: 28px 28px 24px; min-height: 300px; }
    .showcase-title { font-size: clamp(20px, 2.5vw, 26px); }
  }

  /* Tablet portrait & mobile landscape (820px) — chuyển sang 1 cột */
  @media (max-width: 820px) {
    nav { background: rgba(10, 22, 40, 0.92); }
    nav.scrolled { background: rgba(10, 22, 40, 0.96); }
    /* When mobile menu opens, make nav fully solid so it stays on top */
    body.menu-open nav { background: var(--ink); }
    .nav-links, .nav-phone, .icon-btn[aria-label="Search"] { display: none; }
    .icon-btn[aria-label="Cart"] { display: none; }
    .dropdown { display: none !important; }
    .hamburger { display: flex; }

    /* Mobile nav: logo perfectly centered, equal visual height */
    .nav-inner {
      padding: 6px 14px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      position: relative;
    }
    .hamburger {
      order: 1;
      flex: 0 0 auto;
      width: 36px;
      height: 36px;
      border: none;
      background: transparent;
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 2;
    }
    .hamburger span { width: 18px; }
    /* Logo absolutely centered — never shifted by side elements (CHỈ logo trong nav) */
    nav .logo {
      order: 2;
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
      height: 28px;
      display: flex;
      align-items: center;
      justify-content: center;
      pointer-events: auto;
      z-index: 1;
    }
    /* Fix: logo footer KHÔNG bị rule căn giữa logo nav kéo ra giữa trang (mobile) */
    .foot-brand .logo {
      position: static;
      transform: none;
      left: auto;
      top: auto;
      order: 0;
    }
    .logo img {
      height: 28px;
      max-height: 28px;
      width: auto;
      display: block;
      object-fit: contain;
    }
    .nav-actions {
      order: 3;
      flex: 0 0 auto;
      height: 36px;
      display: flex;
      align-items: center;
      gap: 8px;
      z-index: 2;
    }
    .store-btn {
      height: 36px;
      padding: 0 8px;
      font-size: 13px;
      font-weight: 500;
      border: none;
      background: transparent;
      color: var(--reef);
      gap: 5px;
      display: inline-flex;
      align-items: center;
    }
    .store-btn:hover {
      background: transparent;
      transform: none;
      box-shadow: none;
    }
    .store-btn svg { width: 14px; height: 14px; }

    /* Hero — Red Sea style mobile */
    .hero {
      height: auto;
      min-height: calc(100vh - 48px);
      max-height: none;
    }
    .slides {
      position: relative;
      width: 100%;
      flex: 1;
      min-height: 70vh;
    }
    .slide {
      position: absolute;
      inset: 0;
      width: 100%;
    }
    /* Disable entry animations on mobile */
    .slide.active .slide-badge,
    .slide.active h1,
    .slide.active .slide-tagline,
    .slide.active .slide-desc,
    .slide.active .slide-cta {
      animation: none;
      opacity: 1;
      transform: none;
    }
    .slide.active .slide-bg svg,
    .slide.active .slide-bg picture img,
    .slide.active .slide-bg img {
      animation: none;
      transform: none;
    }

    .slide-content-wrap {
      padding: 0 24px;
      align-items: flex-end;
    }
    .slide-content {
      max-width: 100%;
      padding: 100px 0 160px;
    }
    .slide-badge {
      font-size: 11px;
      padding: 5px 12px;
      margin-bottom: 18px;
    }
    .slide h1 {
      font-size: clamp(34px, 8vw, 52px);
      margin-bottom: 14px;
      line-height: 1.1;
    }
    .slide-tagline {
      font-size: 17px;
      margin-bottom: 16px;
    }
    .slide-desc {
      font-size: 14px;
      max-width: 100%;
      margin-bottom: 24px;
    }
    .slide-cta {
      padding: 14px 26px;
      font-size: 14px;
    }

    /* Tabs - mobile: scroll horizontal */
    .slide-tabs {
      grid-template-columns: 100%;
      grid-auto-flow: column;
      grid-auto-columns: 70%;
      overflow-x: auto;
      scroll-snap-type: x mandatory;
      gap: 0;
      padding: 20px 16px 20px;
      margin-top: -100px;
      -webkit-overflow-scrolling: touch;
    }
    .slide-tabs::-webkit-scrollbar { display: none; }
    .slide-tab {
      scroll-snap-align: start;
      padding: 14px 16px 4px;
    }
    .tab-title { font-size: 14px; }
    .tab-desc { font-size: 12px; }

    section.block { padding: 70px 20px; }
    .section-head { margin-bottom: 40px; }
    .section-title { font-size: clamp(32px, 6vw, 48px); }

    .product-grid { grid-template-columns: 1fr; gap: 16px; }
    .product-card { min-height: 380px; padding: 28px; }
    .product-card.featured { grid-column: span 1; min-height: 440px; }
    .product-name { font-size: clamp(26px, 6vw, 36px); }

    /* Categories: only show 4 items + View All button on mobile */
    .cat-grid { grid-template-columns: repeat(2, 1fr); }
    .cat-item.mobile-hide { display: none; }
    .cat-item { padding: 32px 22px; }
    .cat-view-all { display: inline-flex; }

    .feature-grid { grid-template-columns: 1fr; gap: 40px; }
    .feature h2 { font-size: clamp(32px, 6vw, 44px); }

    .contact-grid { grid-template-columns: 1fr; gap: 36px; }
    .contact h2 { font-size: clamp(34px, 6vw, 50px); }

    .testi-quote { font-size: clamp(22px, 4vw, 30px); }

    .foot-grid { grid-template-columns: 1fr 1fr; gap: 36px 24px; padding-bottom: 40px; }
    .foot-brand { grid-column: span 2; }
    footer { padding: 60px 20px 28px; }
    .foot-bottom { flex-direction: column; gap: 8px; text-align: center; }

    .showcase-grid { grid-template-columns: 1fr; }
    .showcase-card { padding: 36px 28px 28px; min-height: 360px; }
    .showcase-title { font-size: clamp(22px, 5vw, 28px); }
    .showcase-visual { max-width: 320px; }
  }

  /* Mobile (480px) — tinh chỉnh nhỏ hơn */
  @media (max-width: 480px) {
    .nav-inner { padding: 10px 14px; gap: 8px; }
    .logo { height: 28px; }
    .icon-btn { width: 32px; height: 32px; }
    .nav-actions { gap: 8px; }
    .store-btn { padding: 7px 12px; font-size: 12px; gap: 5px; }

    .slide-grid { padding: 24px 16px 80px; gap: 24px; }
    .slide-eyebrow { font-size: 11px; letter-spacing: 0.15em; }
    .slide h1 { font-size: clamp(28px, 8vw, 40px); }
    .slide-sub { font-size: 14px; margin-bottom: 24px; }
    .slide-ctas { flex-direction: column; width: 100%; gap: 10px; }
    .slide-ctas .btn { justify-content: center; width: 100%; }
    .btn { padding: 14px 22px; font-size: 13px; }
    .slide-spec-card {
      bottom: 12px; left: 12px; right: 12px;
      gap: 12px; padding: 10px 12px;
      justify-content: space-around;
    }
    .spec-item .spec-num { font-size: 18px; }

    .carousel-controls { gap: 8px; }
    .dot { width: 6px; height: 6px; }
    .dot.active { width: 24px; }

    section.block { padding: 56px 16px; }
    .section-head { flex-direction: column; align-items: start; gap: 16px; margin-bottom: 32px; }
    .section-title { font-size: clamp(28px, 7vw, 38px); }

    .product-card { padding: 24px; min-height: 340px; }
    .product-card.featured { min-height: 380px; }
    .product-name { font-size: clamp(24px, 7vw, 32px); }
    .product-desc { font-size: 14px; }
    .product-price { font-size: 24px; }

    .cat-grid { grid-template-columns: 1fr; }
    .cat-item { padding: 24px 20px; }

    .feature h2 { font-size: clamp(28px, 7vw, 38px); }
    .feature p { font-size: 15px; }
    .feature-list li { padding: 14px 0; font-size: 14px; }

    .testi-quote { font-size: clamp(20px, 5vw, 26px); }

    .contact-card { padding: 18px; gap: 14px; }
    .contact-card .value { font-size: 18px; }
    .contact-icon { width: 44px; height: 44px; }

    .foot-grid { grid-template-columns: 1fr; }
    .foot-brand { grid-column: span 1; }

    .marquee-track span { font-size: 18px; }

    .showcase-grid { grid-template-columns: 1fr; }
    .showcase-card { padding: 28px 20px 20px; min-height: 280px; }
  }

  /* SVG decoration animations */
  @keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
  }
  .float { animation: float 4s ease-in-out infinite; }
  .float-2 { animation: float 5s ease-in-out infinite 0.5s; }
  .float-3 { animation: float 6s ease-in-out infinite 1s; }


/* ===== CHILD PAGE STYLES ===== */
.page-main {
  min-height: calc(100vh - 200px);
  padding-top: 80px;
}

/* Page hero */
.page-hero {
  background: linear-gradient(180deg, var(--ink) 0%, var(--deep) 100%);
  color: var(--paper);
  padding: 100px 32px 80px;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 30% 30%, rgba(0,168,150,0.12), transparent 70%);
  pointer-events: none;
}
.page-hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}
.page-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--reef);
  margin-bottom: 20px;
}
.page-eyebrow::before {
  content: '';
  width: 24px; height: 1px;
  background: var(--reef);
}
.page-hero h1 {
  font-family: var(--display);
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  max-width: 800px;
}
.page-hero h1 em {
  font-style: italic;
  color: var(--reef);
}
.page-hero-desc {
  font-size: clamp(16px, 1.4vw, 19px);
  line-height: 1.6;
  color: rgba(250,250,247,0.75);
  max-width: 640px;
}

/* Page sections */
.page-section {
  background: var(--paper);
  padding: 100px 32px;
  color: var(--ink);
}
.page-section.dark {
  background: var(--ink);
  color: var(--paper);
}
.page-section-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--reef);
  margin-bottom: 20px;
}
.section-eyebrow::before {
  content: '';
  width: 24px; height: 1px;
  background: currentColor;
}
.section-title {
  font-family: var(--display);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 24px;
  max-width: 700px;
}
.section-title em {
  font-style: italic;
  color: var(--reef);
}
.section-lead {
  font-size: 18px;
  line-height: 1.65;
  color: var(--muted);
  max-width: 640px;
  margin-bottom: 56px;
}
.page-section.dark .section-lead { color: rgba(250,250,247,0.7); }

/* Card grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.card-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.feature-card {
  background: #fff;
  border-radius: 20px;
  padding: 40px 32px;
  box-shadow: 0 1px 3px rgba(10,22,40,0.04);
  border: 1px solid var(--line);
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 50px rgba(10,22,40,0.08);
  border-color: rgba(0,168,150,0.3);
}
.page-section.dark .feature-card {
  background: var(--deep);
  border-color: rgba(255,255,255,0.08);
}
.feature-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--reef), #007d6f);
  display: grid; place-items: center;
  margin-bottom: 24px;
}
.feature-icon svg { width: 28px; height: 28px; color: var(--paper); }
.feature-card h3 {
  font-family: var(--display);
  font-size: 24px;
  font-weight: 500;
  margin-bottom: 12px;
  line-height: 1.2;
}
.feature-card p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--muted);
  margin-bottom: 20px;
  flex: 1;
}
.page-section.dark .feature-card p { color: rgba(250,250,247,0.65); }
.feature-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--reef);
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  margin-top: auto;
}
.feature-card .card-link svg {
  width: 14px; height: 14px;
  transition: transform 0.25s;
}
.feature-card .card-link:hover svg { transform: translateX(4px); }

/* Tank model showcase */
.tank-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 100px;
}
.tank-row:last-child { margin-bottom: 0; }
.tank-row.reverse { direction: rtl; }
.tank-row.reverse > * { direction: ltr; }
.tank-image {
  border-radius: 24px;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--ink);
}
.tank-image img {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.tank-content h2 {
  font-family: var(--display);
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 500;
  line-height: 1.15;
  margin-bottom: 16px;
}
.tank-content h2 em { font-style: italic; color: var(--reef); }
.tank-content .tank-tagline {
  font-family: var(--display);
  font-size: 20px;
  font-weight: 400;
  font-style: italic;
  color: var(--muted);
  margin-bottom: 20px;
}
.tank-content p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--muted);
  margin-bottom: 28px;
}
.tank-specs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 28px;
  padding: 24px;
  background: var(--sand);
  border-radius: 16px;
}
.tank-spec-item .spec-label {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}
.tank-spec-item .spec-value {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 500;
  color: var(--ink);
}

/* CTA section */
.cta-band {
  background: var(--ink);
  color: var(--paper);
  padding: 80px 32px;
  text-align: center;
}
.cta-band h2 {
  font-family: var(--display);
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 500;
  line-height: 1.2;
  margin-bottom: 16px;
}
.cta-band p {
  font-size: 17px;
  color: rgba(250,250,247,0.7);
  max-width: 580px;
  margin: 0 auto 32px;
}
.cta-buttons {
  display: inline-flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}
.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 32px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  transition: all 0.25s;
}
.btn-cta.primary {
  background: var(--reef);
  color: var(--paper);
}
.btn-cta.primary:hover {
  background: #007d6f;
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(0,168,150,0.4);
}
.btn-cta.ghost {
  background: transparent;
  color: var(--paper);
  border: 1px solid rgba(255,255,255,0.25);
}
.btn-cta.ghost:hover {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.5);
}

/* FAQ accordion */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--line);
  padding: 24px 0;
}
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-family: var(--display);
  font-size: 20px;
  font-weight: 500;
  color: var(--ink);
  list-style: none;
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question::after {
  content: '+';
  font-size: 28px;
  font-weight: 300;
  color: var(--reef);
  transition: transform 0.25s;
}
details[open] .faq-question::after {
  transform: rotate(45deg);
}
.faq-answer {
  margin-top: 16px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--muted);
}

/* Contact form */
.contact-form-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.contact-info-block h3 {
  font-family: var(--display);
  font-size: 24px;
  font-weight: 500;
  margin-bottom: 8px;
}
.contact-info-block p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--muted);
  margin-bottom: 24px;
}
.contact-info-list {
  list-style: none;
  padding: 0;
}
.contact-info-list li {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.contact-info-list li:last-child { border-bottom: none; }
.contact-info-list .ci-icon {
  width: 40px; height: 40px;
  flex-shrink: 0;
  background: rgba(0,168,150,0.1);
  border-radius: 10px;
  display: grid; place-items: center;
  color: var(--reef);
}
.contact-info-list .ci-icon svg { width: 18px; height: 18px; }
.contact-info-list .ci-label {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}
.contact-info-list .ci-value {
  font-family: var(--display);
  font-size: 17px;
  color: var(--ink);
}
.contact-info-list .ci-value a {
  color: inherit;
  text-decoration: none;
}
.contact-info-list .ci-value a:hover { color: var(--reef); }

.contact-form {
  background: var(--sand);
  border-radius: 24px;
  padding: 40px;
}
.contact-form .form-row {
  margin-bottom: 20px;
}
.contact-form label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 14px 18px;
  background: #fff;
  border: 1px solid rgba(10,22,40,0.1);
  border-radius: 12px;
  font-family: inherit;
  font-size: 15px;
  color: var(--ink);
  transition: border-color 0.25s;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--reef);
}
.contact-form textarea { resize: vertical; min-height: 120px; }
.contact-form button {
  width: 100%;
  padding: 16px;
  background: var(--reef);
  color: var(--paper);
  border: none;
  border-radius: 100px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s;
}
.contact-form button:hover {
  background: #007d6f;
  transform: translateY(-2px);
}

/* Map */
.map-embed {
  width: 100%;
  height: 420px;
  border: 0;
  border-radius: 24px;
  margin-top: 60px;
  filter: grayscale(0.2);
}

/* Responsive */
@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .tank-row { grid-template-columns: 1fr; gap: 32px; margin-bottom: 60px; }
  .tank-row.reverse { direction: ltr; }
  .contact-form-wrap { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 820px) {
  .page-main { padding-top: 48px; }
  .page-hero { padding: 60px 20px 50px; }
  .page-section { padding: 60px 20px; }
  .card-grid, .card-grid.cols-2, .card-grid.cols-4 { grid-template-columns: 1fr; gap: 16px; }
  .tank-specs { grid-template-columns: 1fr; gap: 12px; padding: 18px; }
  .tank-spec-item { display: flex; justify-content: space-between; align-items: baseline; }
  .tank-spec-item .spec-label { margin-bottom: 0; }
  .feature-card { padding: 28px 24px; }
  .contact-form { padding: 28px 24px; }
  .map-embed { height: 320px; margin-top: 40px; }
}