/* ======================================================
   RESPONSIVE — global tweaks
   (mobile nav now lives in nav.css)
   ====================================================== */
@media (max-width: 768px) {
  :root {
    --pad: clamp(1.05rem, 5vw, 1.35rem);
    --section-pad: 3.4rem;
    --section-pad-sm: 2.5rem;
  }

  html {
    font-size: 106.25%;
  }

  body {
    line-height: 1.62;
  }

  .about,
  .patent,
  .ranges-showcase,
  .markets,
  .contact,
  footer {
    zoom: 1;
  }

  .frame {
    max-width: none;
  }

  section {
    padding: var(--section-pad) var(--pad);
  }

  .container {
    max-width: none;
    width: 100%;
  }

  .section__index {
    font-size: 0.82rem;
    margin-bottom: 0.55rem;
  }

  .section__eyebrow {
    font-size: 0.61rem;
    letter-spacing: 0.28em;
    gap: 0.7rem;
    margin-bottom: 1.25rem;
  }

  .section__eyebrow::before {
    width: 22px;
  }

  .section__title {
    font-size: 2.22rem;
    line-height: 1.08;
    letter-spacing: 0;
    margin-bottom: 1.15rem;
    max-width: 100%;
  }

  .hero {
    min-height: 100svh;
    align-items: flex-end;
  }

  .hero__overlay {
    background:
      linear-gradient(to top, rgba(10, 7, 5, 0.82) 0%, rgba(10, 7, 5, 0.42) 48%, rgba(10, 7, 5, 0.18) 100%),
      linear-gradient(to right, rgba(10, 7, 5, 0.56), rgba(10, 7, 5, 0.12));
  }

  .hero__content {
    padding: calc(env(safe-area-inset-top) + 5.7rem) var(--pad) calc(env(safe-area-inset-bottom) + 5.8rem);
  }

  .hero__title {
    font-size: 2.45rem;
    line-height: 1.04;
    letter-spacing: 0;
    max-width: 11ch;
    margin-bottom: 0;
  }

  .hero__video-nav {
    right: var(--pad);
    top: auto;
    bottom: calc(env(safe-area-inset-bottom) + 1.55rem);
    transform: none;
    width: 44px;
    height: 44px;
    background: rgba(242, 233, 215, 0.1);
  }

  .hero__video-nav:hover {
    transform: none;
  }

  .hero__scroll {
    left: var(--pad);
    bottom: calc(env(safe-area-inset-bottom) + 2.15rem);
    gap: 0.65rem;
    font-size: 0.56rem;
    letter-spacing: 0.28em;
  }

  .hero__scroll-line {
    width: 38px;
  }

  .intro {
    padding: 3.25rem 0;
  }

  .intro .container {
    padding: 0 var(--pad);
  }

  .intro__eyebrow {
    font-size: 0.6rem;
    letter-spacing: 0.28em;
    gap: 0.7rem;
    margin-bottom: 1.35rem;
  }

  .intro__eyebrow::before {
    width: 22px;
  }

  .intro__title {
    font-size: 1.85rem;
    line-height: 1.18;
    letter-spacing: 0;
    margin-bottom: 1.1rem;
  }

  .intro__text,
  .intro__tagline {
    font-size: 1.05rem;
    line-height: 1.72;
    margin-bottom: 1.15rem;
    max-width: 100%;
  }

  .intro__tagline {
    margin-bottom: 2.1rem;
  }

  .intro__meta {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    padding-top: 0;
    border-top: 1px solid var(--line-soft);
  }

  .intro__meta-item {
    padding: 1rem 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .intro__meta-label {
    font-size: 0.58rem;
    letter-spacing: 0.22em;
  }

  .intro__meta-value {
    font-size: 1rem;
  }

  .about,
  .contact,
  .patent,
  .markets {
    padding-top: calc(env(safe-area-inset-top) + 5.4rem) !important;
  }

  .about__grid,
  .contact__grid {
    gap: 2rem;
    margin-top: 2.1rem !important;
  }

  .about__visual {
    top: auto;
    aspect-ratio: 3 / 4;
    max-height: 68svh;
  }

  .about__copy p,
  .contact__intro p,
  .patent__body {
    font-size: 1rem;
    line-height: 1.78;
  }

  .about__copy p {
    margin-bottom: 1.05rem;
  }

  .about__signature {
    margin-top: 2rem;
    padding-top: 1.35rem;
  }

  .about__signature-name {
    font-size: 1.35rem;
    letter-spacing: 0.08em;
  }

  .about__signature-title {
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    line-height: 1.7;
  }

  .patent__inner {
    text-align: left;
  }

  .patent__inner .section__eyebrow {
    justify-content: flex-start;
  }

  .patent__mark {
    font-size: 2.05rem;
    line-height: 1.05;
    letter-spacing: 0;
    overflow-wrap: anywhere;
    margin: 0.9rem 0 0.85rem;
  }

  .patent__tagline {
    font-size: 1.08rem;
    line-height: 1.48;
    margin-bottom: 1.7rem;
  }

  .patent__body {
    margin-bottom: 1.35rem;
  }

  .patent__specs {
    margin-top: 2.15rem;
    border-top-color: var(--line);
  }

  .patent__spec {
    display: grid;
    grid-template-columns: 3.3rem 1fr;
    gap: 1rem;
    align-items: baseline;
    text-align: left;
    padding: 1.15rem 0;
  }

  .patent__spec-value {
    font-size: 1.65rem;
    margin-bottom: 0;
  }

  .patent__spec-label {
    font-size: 0.64rem;
    letter-spacing: 0.18em;
    line-height: 1.55;
  }

  .markets__grid {
    grid-template-columns: 1fr;
    grid-template-rows: none;
    margin-top: 2rem;
    border-top-color: var(--line);
  }

  .market {
    display: block;
    grid-row: auto;
    text-align: left;
    padding: 1.35rem 0;
  }

  .market + .market::before {
    top: 0;
    bottom: auto;
    left: 0;
    right: 0;
    width: auto;
    height: 1px;
  }

  .market__year {
    font-size: 0.58rem;
    letter-spacing: 0.24em;
  }

  .market__name {
    font-size: 1.35rem;
    letter-spacing: 0.12em;
    margin-bottom: 0.35rem;
  }

  .market__sub {
    font-size: 0.98rem;
    margin-bottom: 0.7rem;
  }

  .market__detail {
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    line-height: 1.65;
  }

  .contact__intro p {
    margin-bottom: 1rem;
  }

  .contact__channels {
    margin-top: 1.65rem;
  }

  .contact__channel {
    padding: 1rem 0;
    gap: 0.45rem;
  }

  .contact__channel-label,
  .form__label {
    font-size: 0.58rem;
    letter-spacing: 0.2em;
    line-height: 1.55;
  }

  .contact__channel-value {
    font-size: 1.03rem;
    line-height: 1.45;
    overflow-wrap: anywhere;
  }

  .contact__form {
    background: transparent;
    border: 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line-soft);
    padding: 1.5rem 0 1.65rem;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .form__row {
    grid-template-columns: 1fr;
    gap: 0;
    margin-bottom: 0;
  }

  .form__group,
  .form__row .form__group {
    margin-bottom: 1.25rem !important;
  }

  .form__input,
  .form__textarea {
    font-size: 1rem;
    padding: 0.78rem 0;
    min-height: 2.65rem;
  }

  .form__textarea {
    min-height: 8.2rem;
  }

  .form__submit {
    width: 100%;
    min-height: 3rem;
    margin-top: 0.4rem;
    padding: 0.95rem 1rem;
    font-size: 0.62rem;
    letter-spacing: 0.24em;
  }

  .ranges-showcase .rs-inner {
    padding: calc(env(safe-area-inset-top) + 5.35rem) var(--pad) 2.8rem !important;
  }

  .rs-signature {
    font-size: 0.54rem;
    letter-spacing: 0.32em;
    line-height: 1.6;
  }

  .rs-eyebrow-top,
  .rs-eyebrow {
    font-size: 0.58rem;
    letter-spacing: 0.2em;
    line-height: 1.6;
  }

  .rs-tabs {
    justify-content: flex-start;
    gap: 0;
    overflow-x: auto;
    padding-bottom: 0.85rem;
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
  }

  .rs-tabs::-webkit-scrollbar {
    display: none;
  }

  .rs-tab {
    flex: 0 0 auto;
    scroll-snap-align: start;
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    padding: 0 1rem 0.75rem 0;
  }

  .rs-main {
    padding: 1.45rem 0 0;
  }

  .rs-title {
    font-size: 2.75rem;
    line-height: 0.98;
    letter-spacing: 0;
  }

  .rs-tagline {
    font-size: 1rem;
    line-height: 1.45;
    margin-bottom: 1.65rem;
  }

  .rs-products {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.8rem;
    margin-bottom: 1.85rem;
  }

  .rs-product {
    width: 100%;
    max-width: none;
    min-width: 0;
    padding: 0.75rem 0.55rem 0.9rem;
    border: 1px solid var(--rs-tab-border);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.08);
    overflow: hidden;
  }

  .rs-product:last-child {
    border-bottom: 1px solid var(--rs-tab-border);
  }

  .rs-products > .rs-product:last-child:nth-child(odd) {
    grid-column: 1 / -1;
    width: calc((100% - 0.8rem) / 2);
    justify-self: center;
  }

  .ranges-showcase[data-range="renaissance"] .rs-media,
  .ranges-showcase[data-range="epigenelux"] .rs-media,
  .ranges-showcase[data-range="luminescence"] .rs-media {
    height: clamp(160px, 42vw, 200px);
    margin-bottom: 0.65rem;
  }

  .ranges-showcase[data-range="renaissance"] .rs-media img[src*="shampoo.png"]     { transform: translate(-50%, 34px) !important; }
  .ranges-showcase[data-range="renaissance"] .rs-media img[src*="shampoo-men.png"] { transform: translate(-50%, 28px) !important; }
  .ranges-showcase[data-range="renaissance"] .rs-media img[src*="mask.png"]        { transform: translate(-50%, 27px) !important; }
  .ranges-showcase[data-range="renaissance"] .rs-media img[src*="serum.png"]       { transform: translate(-50%, 28px) !important; }
  .ranges-showcase[data-range="renaissance"] .rs-media img[src*="capsules.png"]    { transform: translate(-50%, 29px) !important; }
  .ranges-showcase[data-range="epigenelux"] .rs-media img[src*="shampoo.png"]      { transform: translate(-50%, 28px) !important; }
  .ranges-showcase[data-range="epigenelux"] .rs-media img[src*="mask.png"]         { transform: translate(-50%, 24px) !important; }
  .ranges-showcase[data-range="epigenelux"] .rs-media img[src*="night-serum.png"]  { transform: translate(-50%, 29px) !important; }
  .ranges-showcase[data-range="epigenelux"] .rs-media img[src*="nutricare.png"]    { transform: translate(-50%, 26px) !important; }
  .ranges-showcase[data-range="epigenelux"] .rs-media img[src*="leave-in.png"]     { transform: translate(-50%, 24px) !important; }
  .ranges-showcase[data-range="luminescence"] .rs-media img[src*="shampoo.png"]    { transform: translate(-50%, 27px) !important; }
  .ranges-showcase[data-range="luminescence"] .rs-media img[src*="mask.png"]       { transform: translate(-50%, 25px) !important; }
  .ranges-showcase[data-range="luminescence"] .rs-media img[src*="capsules.png"]   { transform: translate(-50%, 31px) !important; }
  .ranges-showcase[data-range="luminescence"] .rs-media img[src*="elixir.png"]     { transform: translate(-50%, 28px) !important; }
  .ranges-showcase[data-range="luminescence"] .rs-media img[src*="leave-in.png"]   { transform: translate(-50%, 26px) !important; }

  .rs-p-name {
    font-size: 0.68rem;
    letter-spacing: 0.14em;
    line-height: 1.35;
  }

  .rs-p-sub {
    font-size: 0.92rem;
    line-height: 1.25;
  }

  .rs-desc {
    text-align: left;
    font-size: 1rem;
    line-height: 1.75;
    margin-bottom: 1.25rem;
  }

  .rs-tags {
    justify-content: flex-start;
    gap: 0.55rem;
  }

  .rs-tag {
    font-size: 0.56rem;
    letter-spacing: 0.16em;
    padding: 0.42rem 0.7rem;
  }

  .rs-cta {
    width: 100%;
    justify-content: space-between;
    font-size: 0.62rem;
    letter-spacing: 0.22em;
    padding: 0.95rem 0;
    border-top: 1px solid var(--rs-tag-border);
  }

  footer {
    padding: 3rem var(--pad) calc(env(safe-area-inset-bottom) + 2rem);
  }

  .footer__top {
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2.2rem;
  }

  .footer__brand-name {
    font-size: 1.3rem;
    letter-spacing: 0.14em;
  }

  .footer__tagline {
    font-size: 0.98rem;
  }

  .footer__col {
    padding-top: 1.25rem;
    border-top: 1px solid var(--line-soft);
  }

  .footer__col-title {
    font-size: 0.58rem;
    letter-spacing: 0.26em;
    margin-bottom: 0.9rem;
  }

  .footer__col ul {
    gap: 0.55rem;
  }

  .footer__col a {
    font-size: 0.95rem;
  }

  .footer__bottom {
    display: grid;
    gap: 0.75rem;
    align-items: start;
  }

  .footer__legal,
  .footer__patent {
    font-size: 0.58rem;
    letter-spacing: 0.14em;
    line-height: 1.6;
  }
}

@media (max-width: 600px) {
  section { padding: var(--section-pad-sm) var(--pad); }
}

@media (max-width: 380px) {
  .section__title {
    font-size: 2rem;
  }

  .hero__title {
    font-size: 2.16rem;
  }

  .patent__mark {
    font-size: 1.9rem;
  }

  .rs-title {
    font-size: 2.3rem;
  }

  .ranges-showcase[data-range="renaissance"] .rs-media,
  .ranges-showcase[data-range="epigenelux"] .rs-media,
  .ranges-showcase[data-range="luminescence"] .rs-media {
    height: 155px;
  }
}