/* ── Base & Utilities ── */
  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; scroll-padding-top: 80px; }
  body { overflow-x: hidden; }

  ::selection { background: #7dd3c0; color: #0a1628; }

  /* ── Navbar ── */
  #navbar {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
  }
  #navbar.scrolled {
    background: rgba(254, 253, 248, 0.92);
    backdrop-filter: blur(16px);
    box-shadow: 0 1px 20px rgba(10, 22, 40, 0.06);
  }
  #navbar.scrolled .nav-logo-text { color: #0a1628; }
  #navbar.scrolled .menu-line { background: #0a1628; }

  .nav-link { position: relative; }
  .nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: #2bc095;
    border-radius: 1px;
    transition: width 0.3s ease;
  }
  .nav-link:hover::after { width: 100%; }

  /* ── Mobile Menu ── */
  #mobile-menu-btn.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
  }
  #mobile-menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
  }
  #mobile-menu-btn.active .menu-line:nth-child(3) {
    width: 20px;
    transform: rotate(-45deg) translate(4px, -4px);
  }
  .mobile-nav-link { border-radius: 12px; }

  /* ── Hero ── */
  .hero-bg { will-change: transform; }
  .hero-overlay {
    background-image:
      radial-gradient(ellipse at 20% 50%, rgba(43, 192, 149, 0.15) 0%, transparent 60%),
      radial-gradient(ellipse at 80% 20%, rgba(125, 211, 192, 0.1) 0%, transparent 50%);
  }

  /* Hero animations */
  .hero-badge {
    animation: fadeInDown 0.8s ease forwards;
    opacity: 0;
    animation-delay: 0.2s;
  }
  .hero-title {
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
    animation-delay: 0.4s;
  }
  .hero-subtitle {
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
    animation-delay: 0.6s;
  }
  .hero-ctas {
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
    animation-delay: 0.8s;
  }
  .hero-scroll {
    animation: fadeIn 0.8s ease forwards;
    opacity: 0;
    animation-delay: 1.2s;
  }

  @keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
  }
  @keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
  }
  @keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }

  /* ── Section Labels ── */
  .section-label {
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-size: 0.7rem;
    font-weight: 600;
  }

  /* ── Reveal Animations ── */
  .reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .reveal.visible {
    opacity: 1;
    transform: translateY(0);
  }
  .reveal:nth-child(2) { transition-delay: 0.1s; }
  .reveal:nth-child(3) { transition-delay: 0.2s; }

  /* ── Product Cards ── */
  .product-card {
    border: 1px solid rgba(125, 211, 192, 0.15);
    transition: border-color 0.4s ease, box-shadow 0.4s ease, transform 0.4s ease;
  }
  .product-card:hover {
    border-color: rgba(125, 211, 192, 0.4);
  }

  /* ── Care Cards ── */
  .care-card {
    transition: border-color 0.4s ease, background 0.4s ease, transform 0.4s ease;
  }
  .care-card:hover {
    transform: translateY(-4px);
  }

  /* ── FAQ ── */
  .faq-icon {
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .faq-item.active .faq-icon {
    transform: rotate(45deg);
  }
  .faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1), padding 0.4s ease;
  }
  .faq-item.active .faq-content {
    max-height: 300px;
  }

  /* ── Buttons ── */
  .hero-btn-primary {
    box-shadow: 0 4px 20px rgba(43, 192, 149, 0.3);
  }
  .hero-btn-primary:hover {
    box-shadow: 0 8px 40px rgba(43, 192, 149, 0.4);
  }

  /* ── Parallax ── */
  @media (prefers-reduced-motion: no-preference) {
    .hero-bg {
      will-change: transform;
    }
  }

  /* ── Focus Styles ── */
  a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
    outline: 2px solid #2bc095;
    outline-offset: 2px;
    border-radius: 4px;
  }

  /* ── Scrollbar ── */
  ::-webkit-scrollbar { width: 8px; }
  ::-webkit-scrollbar-track { background: #fefdf8; }
  ::-webkit-scrollbar-thumb { background: #7dd3c0; border-radius: 4px; }
  ::-webkit-scrollbar-thumb:hover { background: #2bc095; }

  /* ── Responsive ── */
  @media (max-width: 767px) {
    .hero-title { font-size: 2.25rem; }
    .hero-title br { display: none; }
    .hero-title span { display: block; }
    .reveal { transform: translateY(24px); }
  }

  @media (min-width: 768px) and (max-width: 1023px) {
    .hero-title { font-size: 3.5rem; }
  }

  @media (min-width: 1024px) {
    .hero-title { font-size: 4.5rem; }
  }