@media (max-width: 1280px) {
  .desktop-nav__list { gap: 14px; }
  .desktop-nav__item > a { font-size: 0.58rem; }
  .site-header__inner { grid-template-columns: 98px minmax(0, 1fr) auto; gap: 16px; }
  .site-action { font-size: 0; gap: 0; }
  .site-action svg { display: block; }
  .site-action b { position: absolute; top: -10px; right: -8px; font-size: 0.5rem; }
  .product-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .program-card { grid-template-columns: 1.25fr 0.75fr; }
  .site-footer__grid { grid-template-columns: 1.25fr repeat(4, 1fr); row-gap: 44px; }
}

@media (max-width: 1120px) {
  :root { --section-space-lg: 94px; --header-height: 70px; }
  .desktop-nav { display: none; }
  .site-header__inner { grid-template-columns: 1fr auto; }
  .mobile-menu-toggle { display: block; }
  .site-action--search { display: none; }
  .site-action span { display: none; }
  .home-hero { min-height: auto; }
  .home-hero__grid { min-height: 700px; grid-template-columns: 0.95fr 1.05fr; gap: 34px; }
  .hero-title { font-size: clamp(3.5rem, 6.5vw, 5rem); }
  .hero-product { min-height: 570px; }
  .hero-bottle--main { right: 17%; width: min(35vw, 400px); }
  .hero-bottle--back { right: -2%; width: min(32vw, 360px); }
  .hero-product__stage { width: min(48vw, 540px); }
  .product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .product-card__image { aspect-ratio: 1; }
  .product-card__image img { width: 65%; height: 76%; }
  .source-panel { grid-template-columns: 1fr 1fr; min-height: 670px; }
  .source-panel__content { padding-right: 43px; }
  .source-bottle { right: 10%; width: min(42vw, 430px); }
  .program-card { min-height: 490px; grid-template-columns: 1fr; }
  .program-card__content { padding-right: 34%; }
  .program-card > img { width: 38%; }
  .program-card:first-child > img { width: 48%; }
  .faq-grid { grid-template-columns: 0.68fr 1.32fr; gap: 58px; }
}

@media (max-width: 880px) {
  .section-heading { grid-template-columns: 1fr; align-items: start; gap: 27px; }
  .section-heading__aside, .section-heading__intro { max-width: 590px; }
  .home-hero__grid { grid-template-columns: 1fr; min-height: auto; gap: 0; }
  .home-hero__content { max-width: 720px; padding: 70px 0 20px; }
  .hero-product { width: min(94%, 650px); min-height: 575px; margin-left: auto; }
  .hero-bottle--main { right: 21%; width: min(49vw, 410px); }
  .hero-bottle--back { right: 2%; width: min(45vw, 370px); }
  .hero-product__stage { width: min(70vw, 560px); }
  .hero-wordmark { top: 61%; right: -2vw; font-size: 21vw; }
  .hero-trust { grid-template-columns: repeat(2, 1fr); }
  .hero-trust__item { min-height: 68px; border-bottom: 1px solid var(--border-dark); }
  .hero-trust__item:nth-child(2) { border-right: 0; }
  .hero-trust__item:nth-child(3), .hero-trust__item:nth-child(4) { border-bottom: 0; }
  .hero-trust__item:nth-child(3) { padding-left: 0; }
  .trust-strip__grid { grid-template-columns: repeat(2, 1fr); }
  .trust-strip__item { min-height: 79px; border-bottom: 1px solid var(--border-light); }
  .trust-strip__item:nth-child(2) { border-right: 1px solid var(--border-light); }
  .trust-strip__item:nth-child(3), .trust-strip__item:nth-child(4) { border-bottom: 0; }
  .standards-grid { grid-template-columns: repeat(2, 1fr); }
  .standards-grid article:nth-child(2) { border-right: 1px solid var(--border-light); }
  .standards-grid article:nth-child(3) { border-top: 1px solid var(--border-light); border-left: 1px solid var(--border-light); }
  .standards-grid article:nth-child(4) { border-top: 1px solid var(--border-light); }
  .source-panel { grid-template-columns: 1fr; }
  .source-panel__content { padding: 58px 0; }
  .source-panel__visual { min-height: 550px; }
  .source-bottle { right: 25%; width: min(52vw, 420px); }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .transparency-grid { grid-template-columns: 1fr; gap: 68px; }
  .certificate-card { width: calc(100% - 22px); }
  .programs-grid { grid-template-columns: 1fr; }
  .program-card__content { max-width: 650px; padding-right: 36%; }
  .reviews-track { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; }
  .reviews-track::-webkit-scrollbar { display: none; }
  .review-card { min-width: min(78vw, 460px); scroll-snap-align: start; }
  .community-grid { grid-template-columns: 1fr; gap: 48px; }
  .community-content { max-width: 680px; }
  .community-form { max-width: 680px; }
  .insights-grid { grid-template-columns: 1fr 1fr; }
  .insight-card:last-child { grid-column: 1 / -1; display: grid; grid-template-columns: 0.8fr 1.2fr; }
  .insight-card:last-child .insight-card__image { aspect-ratio: auto; }
  .faq-grid { grid-template-columns: 1fr; gap: 52px; }
  .faq-heading { position: static; }
  .final-cta__grid { grid-template-columns: 1fr 0.68fr; }
  .final-cta__visual img { right: -18%; width: min(57vw, 510px); }
  .site-footer__grid { grid-template-columns: repeat(2, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 620px) {
  :root { --section-space-lg: 72px; --section-space-sm: 60px; }
  .container { width: min(90%, var(--container-width)); }
  .announcement-bar p { font-size: 0.5rem; letter-spacing: 0.08em; }
  .announcement-bar p:first-child span { display: none; }
  .site-header__inner { gap: 15px; }
  .brand-logo__mark { width: 56px; height: 56px; padding: 2px; }
  .site-actions { gap: 15px; }
  .site-action svg { width: 20px; }
  .site-header.is-scrolled, .site-header.is-menu-open { height: 62px; }
  .mobile-menu { padding-top: 80px; }
  .mobile-menu__footer { display: grid; gap: 6px; }
  .section-label { margin-bottom: 18px; }
  .section-heading { margin-bottom: 39px; }
  .section-heading h2,
  .source-panel h2,
  .transparency-content h2,
  .program-card h2,
  .community-section h2,
  .faq-heading h2,
  .final-cta h2 { font-size: clamp(2.4rem, 10vw, 3.5rem); line-height: 0.97; }
  .home-hero { min-height: 100svh; padding-top: calc(var(--announcement-height) + var(--header-height)); }
  .home-hero__content { padding-top: 58px; }
  .hero-title { font-size: clamp(3rem, 12vw, 4.2rem); line-height: 0.9; }
  .hero-description { margin-top: 24px; font-size: 0.94rem; }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .hero-actions .button { width: 100%; justify-content: space-between; }
  .hero-about-link { margin-top: 23px; }
  .hero-product { width: 105%; min-height: 465px; margin-right: -6%; }
  .hero-bottle--main { right: 22%; width: min(72vw, 350px); }
  .hero-bottle--back { right: 2%; width: min(65vw, 315px); }
  .hero-product__stage { width: min(95vw, 470px); }
  .hero-molecule { top: 8%; right: -4%; width: 80%; }
  .hero-wordmark { top: 65%; right: -8vw; font-size: 27vw; }
  .hero-trust { width: 90%; }
  .hero-trust__item { gap: 9px; padding: 0 10px; }
  .hero-trust__item p { font-size: 0.54rem; letter-spacing: 0.075em; }
  .trust-strip__grid { width: 100%; }
  .trust-strip__item { justify-content: flex-start; padding-left: 5vw; }
  .trust-strip__item p { font-size: 0.61rem; letter-spacing: 0.055em; }
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .product-card { border-radius: 8px; }
  .product-card__image { aspect-ratio: 0.95; }
  .product-card__image img { width: 75%; height: 79%; }
  .product-card__content { padding: 14px 12px 12px; }
  .product-card__eyebrow { font-size: 0.49rem; }
  .product-card__title { font-size: 0.86rem; }
  .product-card__buy { align-items: flex-start; flex-direction: column; gap: 7px; margin-top: 13px; }
  .product-card__price { font-size: 0.65rem; }
  .product-section-cta p { display: none; }
  .research-marquee p { padding: 18px 0; font-size: 0.94rem; }
  .standards-grid { grid-template-columns: 1fr; }
  .standards-grid article,
  .standards-grid article:first-child,
  .standards-grid article:nth-child(3) { min-height: 220px; border-right: 1px solid var(--border-light); border-bottom: 1px solid var(--border-light); border-left: 1px solid var(--border-light); }
  .standards-grid article:last-child { border-bottom: 0; }
  .standards-grid h3 { margin-top: 42px; }
  .source-panel__content { padding-block: 47px; }
  .source-panel__visual { min-height: 440px; }
  .source-bottle { right: 20%; width: min(73vw, 350px); }
  .category-grid { grid-template-columns: 1fr; }
  .category-card { min-height: 265px; }
  .certificate-card { padding: 31px 23px; box-shadow: 11px 11px 0 #e3e8df; }
  .certificate-card dl { grid-template-columns: 1fr; }
  .certificate-card dl div:nth-child(odd), .certificate-card dl div:nth-child(even) { padding: 13px 0; border-left: 0; }
  .program-card { min-height: 495px; }
  .program-card__content { padding: 40px 27px; padding-right: 27px; }
  .program-card__content > p:not(.section-label) { max-width: 78%; }
  .program-card > img { right: -13%; width: 47%; max-height: 55%; }
  .program-card:first-child > img { right: -20%; width: 62%; }
  .review-card { min-width: 88vw; padding: 24px; }
  .community-content ul { display: grid; }
  .community-form { padding: 27px 22px; }
  .insights-grid { grid-template-columns: 1fr; }
  .insight-card:last-child { display: block; grid-column: auto; }
  .insight-card:last-child .insight-card__image { aspect-ratio: 1.58; }
  .final-cta { min-height: 750px; }
  .final-cta__grid { display: block; min-height: 750px; }
  .final-cta__content { padding-block: 67px 0; }
  .final-cta__content > div { display: grid; grid-template-columns: 1fr; }
  .final-cta__visual { position: absolute; right: 0; bottom: 0; left: 0; height: 405px; }
  .final-cta__visual img { right: -4%; bottom: -30%; width: min(95vw, 470px); height: 120%; }
  .site-footer { padding-top: 62px; }
  .site-footer__grid { grid-template-columns: repeat(2, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
  .site-footer__bottom { grid-template-columns: 1fr; gap: 8px; margin-top: 50px; }
  .site-footer__bottom p:nth-child(2), .site-footer__bottom p:last-child { text-align: left; }
}

@media (max-width: 390px) {
  .announcement-bar p { font-size: 0.45rem; letter-spacing: 0.045em; }
  .site-actions { gap: 11px; }
  .hero-product { min-height: 415px; }
  .hero-bottle--main { width: 75vw; }
  .hero-bottle--back { width: 68vw; }
  .product-grid { display: flex; margin-right: -5.55%; padding-right: 5.55%; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; }
  .product-grid::-webkit-scrollbar { display: none; }
  .product-card { min-width: 78vw; scroll-snap-align: start; }
  .product-card__image { aspect-ratio: 1.08; }
  .product-card__image img { width: 66%; }
  .program-card__content > p:not(.section-label) { max-width: 100%; }
  .program-card > img { opacity: 0.45; }
  .site-footer__grid { grid-template-columns: 1fr; }
}