:root {
      --color-orange: #e97816;
      --color-blue: #2367b1;
      --color-ink: #222b36;
      --color-muted: #68727e;
      --color-surface: #f7f9fb;
      --color-line: #f0f3f6;
      --color-white: #ffffff;
      --font-display: Georgia, "Times New Roman", serif;
      --font-body: "Leelawadee UI", Tahoma, Arial, sans-serif;
      --page-gutter: clamp(20px, 6vw, 96px);
      --section-space: clamp(64px, 8vw, 112px);
      --content-width: 1200px;
      --text-width: 800px;
      --radius-lg: 10px;
      --radius-md: 18px;
      --shadow-card: 0 18px 40px rgb(27 53 85 / 8%);
    }

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

    html {
      scroll-behavior: smooth;
      scroll-padding-top: 90px;
    }

    body {
      margin: 0;
      color: var(--color-ink);
      background: var(--color-white);
      font-family: var(--font-body);
      line-height: 1.75;
      text-rendering: optimizeLegibility;
    }

    img {
      display: block;
      max-width: 100%;
    }

    a {
      color: inherit;
    }

    :focus-visible {
      outline: 3px solid color-mix(in srgb, var(--color-blue) 65%, white);
      outline-offset: 4px;
    }

    h1,
    h2,
    h3,
    p {
      margin-top: 0;
    }

    h1,
    h2,
    h3 {
      margin-bottom: 0;
      font-family: var(--font-display);
      font-weight: 400;
      text-wrap: balance;
    }

    h1 {
      max-width: 800px;
      font-size: var(--ci-hero-title-size);
      line-height: 0.98;
    }

    h2 {
      font-size: clamp(2.35rem, 5vw, 3.875rem);
      line-height: 1.08;
    }

    h3 {
      font-size: clamp(1.35rem, 2.4vw, 2rem);
      line-height: 1.2;
    }

    .skip-link {
      position: fixed;
      z-index: 100;
      top: 12px;
      left: 12px;
      padding: 10px 16px;
      border-radius: 8px;
      color: var(--color-white);
      background: var(--color-blue);
      transform: translateY(-160%);
    }

    .skip-link:focus {
      transform: translateY(0);
    }

    .site-header {
      position: relative;
      z-index: 10;
      min-height: 70px;
      border-bottom: 1px solid var(--color-line);
      background: rgb(255 255 255 / 94%);
    }

    .header-inner,
    .container {
      width: min(100% - (var(--page-gutter) * 2), var(--content-width));
      margin-inline: auto;
    }

    .header-inner {
      min-height: 70px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
    }

    .logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--color-ink);
      font-family: var(--font-display);
      font-size: 1.5rem;
      font-weight: 400;
      line-height: 1;
      text-decoration: none;
    }

    .brand-word {
      letter-spacing: 0.32rem;
    }

    .logo .brand-word {
      font-size: 1.32em;
    }

    .brand-badge {
      display: inline-grid;
      min-height: 1.7em;
      padding: 0.34em 0.7em 0.28em;
      border-radius: 0.35em;
      color: var(--color-white);
      background: var(--color-orange);
      font-family: var(--font-body);
      font-size: 0.42em;
      font-weight: 700;
      letter-spacing: 0.12em;
      line-height: 1;
      place-items: center;
      transform: translateY(-0.14em);
    }

    .site-nav {
      display: flex;
      align-items: center;
      gap: clamp(14px, 2vw, 28px);
      margin-left: auto;
    }

    .site-nav ul {
      position: absolute;
      top: calc(100% + 16px);
      left: 50%;
      width: 230px;
      display: grid;
      grid-template-columns: 1fr;
      gap: 4px;
      margin: 0;
      padding: 14px;
      border: 1px solid var(--color-line);
      border-radius: 12px;
      background: var(--color-white);
      box-shadow: 0 18px 40px rgb(27 53 85 / 14%);
      list-style: none;
      transform: translateX(-50%);
    }

    .site-nav details {
      position: relative;
    }

    .site-nav summary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--color-muted);
      font-size: 0.82rem;
      font-weight: 700;
      letter-spacing: 0.08em;
      cursor: pointer;
      list-style: none;
    }

    .site-nav summary::-webkit-details-marker {
      display: none;
    }

    .site-nav summary::after {
      content: "+";
      color: var(--color-orange);
      font-size: 1.1rem;
      line-height: 1;
    }

    .site-nav details[open] summary::after {
      content: "−";
    }

    .site-nav a {
      display: block;
      padding: 10px 12px;
      border-radius: 7px;
      color: var(--color-muted);
      font-size: 0.82rem;
      font-weight: 700;
      letter-spacing: 0.06em;
      text-decoration: none;
    }

    .nav-fast {
      display: inline-block;
      margin-left: 4px;
      padding: 1px 5px;
      border-radius: 999px;
      color: var(--color-white);
      background: var(--color-orange);
      font-size: 0.72em;
      font-style: italic;
      line-height: 1.35;
    }

    .site-nav a:hover {
      color: var(--color-blue);
      background: var(--color-surface);
    }

    .site-nav > .nav-direct {
      letter-spacing: 0.08em;
      white-space: nowrap;
    }

    .accent {
      width: 90px;
      height: 3px;
      margin-left: auto;
      background: linear-gradient(
        90deg,
        var(--color-orange) 0 48%,
        transparent 48% 52%,
        var(--color-blue) 52%
      );
    }

    .header-cta {
      display: inline-flex;
      align-items: center;
      padding: 9px 16px;
      border: 1px solid var(--color-blue);
      border-radius: 999px;
      color: var(--color-blue);
      background: var(--color-white);
      font-size: 0.72rem;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-decoration: none;
      white-space: nowrap;
    }

    .header-cta:hover {
      color: var(--color-white);
      background: var(--color-blue);
    }

    .header-cta--brochure {
      color: var(--color-blue);
      border-color: var(--color-blue);
    }

    .header-cta--rep {
      color: var(--color-orange);
      border-color: var(--color-orange);
    }

    .header-cta--brochure:hover {
      color: var(--color-white);
      background: var(--color-blue);
    }

    .header-cta--rep:hover {
      color: var(--color-white);
      background: var(--color-orange);
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .mobile-menu {
      display: none;
    }

    .mobile-menu summary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--color-ink);
      font-size: 1.2rem;
      font-weight: 700;
      letter-spacing: 0.08em;
      cursor: pointer;
      list-style: none;
    }

    .mobile-menu summary::-webkit-details-marker {
      display: none;
    }

    .section {
      padding-block: var(--section-space);
    }

    .section--soft {
      background: var(--color-surface);
    }

    .section--center {
      padding-block: var(--section-space);
      text-align: center;
    }

    .section-copy {
      max-width: var(--text-width);
      margin: 24px auto 0;
      font-size: clamp(1rem, 1.8vw, 1.125rem);
      text-align: center;
    }

    .section-copy--left {
      margin-inline: auto;
      text-align: center;
    }

    .rule {
      width: 54px;
      height: 3px;
      margin: 20px 0 0;
      border: 0;
    }

    .rule--orange {
      background: var(--color-orange);
    }

    .rule--blue {
      background: var(--color-blue);
    }

    .section--center .rule {
      margin-inline: auto;
    }

    #about-title {
      text-align: left;
    }

    #about {
      text-align: left;
    }

    #about .rule {
      margin-inline: 0;
    }

    #about .section-copy {
      margin-inline: 0;
      text-align: left;
    }

    .section:not(#about) > .container > h2,
    .section:not(#about) > .container > h3,
    .section:not(#about) > .container > .section-copy {
      text-align: center;
    }

    .section:not(#about) > .container > .rule {
      margin-inline: auto;
    }

    .hero {
      position: relative;
      min-height: calc(100svh - 70px);
      display: grid;
      align-items: center;
      overflow: hidden;
      color: var(--color-white);
      background: #fff;
    }

    .hero-video {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .hero-content {
      position: relative;
      z-index: 1;
      display: flex;
      flex-direction: column;
      align-self: stretch;
      justify-content: center;
      align-items: flex-start;
      text-align: left;
    }

    .hero-title {
      font-family: var(--font-display);
      font-size: clamp(0.7rem, 2vw, 1.5rem);
      font-weight: 400;
      line-height: 2.5;
    }

    .hero-tagline {
      max-width: 800px;
      margin: 18px 0 0;
      font-family: var(--font-display);
      font-size: clamp(3.25rem, 7vw, 6rem);
      line-height: 0.98;
      text-wrap: balance;
    }

    .hero .rule {
      margin-inline: 0;
    }

    .natural-grid {
      display: grid;
      align-items: center;
      gap: clamp(36px, 6vw, 76px);
    }

    .hero-lead {
      position: absolute;
      bottom: clamp(24px, 5vw, 56px);
      left: 0;
      width: 100%;
      margin: 0;
      font-size: clamp(1.0rem, 2vw, 1.32rem);
      text-align: left;
    }

    .signature {
      margin: 20px 0 0;
      font-family: var(--font-display);
      font-size: 2.5rem;
      font-style: italic;
    }

    .visual-placeholder {
      display: grid;
      place-items: center;
      min-height: 240px;
      overflow: hidden;
      border: 1px solid var(--color-line);
      color: var(--color-muted);
      background: linear-gradient(145deg, #eef5fb, #fff 52%, #fff0e3);
      font-size: 0.78rem;
      text-align: center;
    }

    .hero-visual {
      min-height: clamp(360px, 50vw, 520px);
    }

    .product-packs {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 24px;
      margin-top: 40px;
    }

    .product-pack {
      display: grid;
      place-items: center;
      border-top: 4px solid var(--accent-color);
      border-radius: 16px;
      box-shadow: var(--shadow-card);
      font-weight: 700;
      letter-spacing: 0.12em;
      overflow: hidden;
      line-height: 0;
      padding: 25px 0px 25px 0px;
    }

    .product-pack--blue {
      --accent-color: var(--color-blue);
    }

    .product-pack--orange {
      --accent-color: var(--color-orange);
    }

    .product-pack img {
      width: auto;
      height: auto;
      padding: 25px 0px 25px 0px;
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
      margin-top: 40px;
    }

    .feature-visual {
      position: relative;
      min-height: 265px;
    }

    .feature-visual img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      border: 1px solid var(--color-line);
    }

    .feature-label {
      position: absolute;
      bottom: 18px;
      left: 18px;
      color: var(--color-ink);
      font-size: 0.88rem;
      font-weight: 700;
      letter-spacing: 0.12em;
    }

    .product-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 26px;
      margin-top: 30px;
    }

    .product-card {
      overflow: hidden;
      background: var(--color-white);
      box-shadow: var(--shadow-card);
    }

    .product-card-visual {
      min-height: 205px;
      border: 0;
      border-radius: 0;
    }

    .product-card--orange .product-card-visual {
      background: linear-gradient(135deg, #fff7ef, #ffe7d0);
    }

    .product-card--blue .product-card-visual {
      background: linear-gradient(135deg, #f1f7fd, #dcebf8);
    }

    .product-card-copy {
      padding: 28px;
    }

    .product-card-copy h3 {
      font-size: clamp(2rem, 4vw, 2.4rem);
    }

    .product-strength {
      margin: 6px 0 0;
      font-size: 1.05rem;
    }

    .product-card--orange .product-strength {
      color: var(--color-orange);
    }

    .product-card--blue .product-strength {
      color: var(--color-blue);
    }

    .placeholder-copy {
      margin: 16px 0 0;
      color: var(--color-muted);
      font-size: 0.78rem;
    }

    .steps {
      max-width: 920px;
      display: grid;
      grid-template-columns: 1fr auto 1fr auto 1fr;
      align-items: center;
      gap: 16px;
      margin: 40px auto 24px;
    }

    .step {
      position: relative;
      min-height: 180px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: flex-start;
      padding: 0;
      border: 1px solid var(--color-line);
      background: var(--color-white);
      overflow: hidden;
    }

    .step strong {
      position: absolute;
      bottom: 18px;
      left: 18px;
      z-index: 1;
      margin: 0;
      letter-spacing: 0.08em;
    }

    .step img {
      width: 100%;
      height: auto;
    }

    .step-note {
      color: var(--color-muted);
      font-size: 0.74rem;
      text-align: center;
    }

    .step-arrow {
      color: #7d8791;
      font-size: 1.65rem;
    }

    .keywords {
      margin: 22px 0 0;
      font-size: 16px;
      letter-spacing: 0.1em;
    }

    .particle-section {
      overflow: hidden;
      background:
        radial-gradient(circle at 8% 18%, rgb(233 120 22 / 12%), transparent 34%),
        radial-gradient(circle at 92% 16%, rgb(35 103 177 / 12%), transparent 36%),
        var(--color-white);
    }

    .particle-kicker,
    .section-kicker {
      margin: 0 0 10px;
      color: var(--color-blue);
      font-size: 0.78rem;
      font-weight: 700;
      letter-spacing: 0.16em;
      text-transform: uppercase;
    }

    .section:not(#about) > .container > .section-kicker {
      text-align: center;
    }

    .particle-gallery {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      margin-top: 42px;
    }

    .particle-gallery img {
      width: 100%;
      aspect-ratio: 3 / 2;
      border: 1px solid rgb(255 255 255 / 65%);
      box-shadow: 0 16px 34px rgb(27 53 85 / 12%);
      object-fit: cover;
    }

    .particle-facts {
      max-width: 1050px;
      margin: 34px auto 0;
      text-align: left;
    }

    .particle-fact {
      display: grid;
      grid-template-columns: minmax(220px, 0.9fr) minmax(0, 1.5fr);
      gap: clamp(24px, 6vw, 80px);
      padding: 18px 0;
      border-top: 1px solid rgb(34 43 54 / 38%);
    }

    .particle-fact:last-child {
      border-bottom: 1px solid rgb(34 43 54 / 38%);
    }

    .particle-fact h3 {
      font-family: var(--font-body);
      font-size: 1.05rem;
      font-weight: 700;
    }

    .particle-fact p {
      margin: 0;
    }

    .natural-grid {
      grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.1fr);
    }

    .natural-visual {
      min-height: 390px;
    }

    .natural-visual img {
      width: 100%;
      height: auto;
    }

    .natural-copy p {
      margin: 22px 0 0;
    }

    .research {
      background: linear-gradient(180deg, #fff, #f7faff);
    }

    .studies {
      max-width: 1200px;
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 28px;
      margin: 36px auto 0;
      text-align: left;
    }

    .study-card img {
      width: 100%;
      height: auto;
      border: 1px solid var(--color-line);
    }

    .study-card {
      display: grid;
      grid-template-columns: 7fr 3fr;
      gap: 18px;
      align-items: stretch;
    }

    .study-title {
      margin: 0;
      font-size: 0.9rem;
      line-height: 1.55;
    }

    .study-copy {
      align-self: end;
    }

    .study-read-more {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-top: 14px;
      padding: 0;
      border: 0;
      color: var(--color-blue);
      background: transparent;
      font: inherit;
      font-size: 0.8rem;
      font-weight: 700;
      text-decoration: none;
      cursor: pointer;
    }

    .study-read-more span {
      font-size: 1.1rem;
      line-height: 1;
    }

    .ages {
      max-width: 980px;
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
      margin: 36px auto 0;
    }

    .age-visual {
      overflow: hidden;
      box-shadow: 0 8px 20px rgb(27 53 85 / 10%);
    }

    .age-visual img {
      width: 100%;
      height: auto;
    }

    .trust-section {
      overflow: hidden;
      background:
        radial-gradient(circle at 8% 18%, rgb(233 120 22 / 12%), transparent 34%),
        radial-gradient(circle at 92% 16%, rgb(35 103 177 / 12%), transparent 36%),
        var(--color-white);
      color: var(--color-ink);
    }

    .trust-section .section-kicker {
      color: var(--color-blue);
    }

    .trust-section .section-copy {
      color: var(--color-muted);
    }

    .certification-list {
      max-width: 1040px;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
      gap: 14px;
      margin: 38px auto 0;
    }

    .certification-logo {
      min-height: 112px;
      display: grid;
      padding: 22px;
      border: 1px solid rgb(35 103 177 / 10%);
      border-radius: 14px;
      background: rgb(255 255 255 / 72%);
      box-shadow: 0 12px 28px rgb(27 53 85 / 6%);
      place-items: center;
    }

    .certification-logo img {
      width: auto;
      max-width: 94px;
      height: auto;
      max-height: 54px;
    }

    .results-carousel {
      display: grid;
      max-width: 1200px;
      grid-template-columns: 48px minmax(0, 1fr) 48px;
      align-items: center;
      gap: 20px;
      margin: 40px auto 0;
    }

    #before-after {
      background: var(--color-white);
    }

    .results-carousel__viewport {
      width: 100%;
      min-width: 0;
      overflow: hidden;
    }

    .results-grid {
      display: flex;
      align-items: flex-start;
      gap: 18px;
      margin: 0;
      transition: transform 420ms cubic-bezier(0.22, 1, 0.36, 1);
      will-change: transform;
    }

    .result-card {
      flex: 0 0 calc((100% - 36px) / 3);
      align-self: flex-start;
      overflow: hidden;
      margin: 0;
      border: 1px solid var(--color-line);
      background: var(--color-white);
      box-shadow: none;
      text-align: left;
    }

    .result-card img {
      display: block;
      width: 100%;
      height: auto;
      background: var(--color-white);
    }

    .result-card p {
      margin: 0;
      padding: 18px 20px;
      font-size: 0.82rem;
      font-weight: 700;
      letter-spacing: 0.1em;
      text-transform: uppercase;
    }

    .results-carousel__button {
      display: inline-grid;
      width: 48px;
      height: 48px;
      padding: 0;
      border: 1px solid var(--color-line);
      border-radius: 50%;
      color: var(--color-blue);
      background: var(--color-white);
      box-shadow: 0 10px 24px rgb(27 53 85 / 12%);
      cursor: pointer;
      font: inherit;
      font-size: 1.8rem;
      line-height: 1;
      place-items: center;
      transition: color 180ms ease, background 180ms ease, transform 180ms ease;
    }

    .results-carousel__button:hover {
      color: var(--color-white);
      background: var(--color-blue);
      transform: translateY(-2px);
    }

    .results-carousel__button:focus-visible,
    .results-carousel__dot:focus-visible {
      outline: 3px solid rgb(235 103 39 / 35%);
      outline-offset: 3px;
    }

    .results-carousel__dots {
      grid-column: 1 / -1;
      display: flex;
      justify-content: center;
      gap: 10px;
      margin-top: 2px;
    }

    .results-carousel__dot {
      width: 10px;
      height: 10px;
      padding: 0;
      border: 0;
      border-radius: 50%;
      background: #c8d0da;
      cursor: pointer;
      transition: background 180ms ease, transform 180ms ease;
    }

    .results-carousel__dot[aria-current="true"] {
      background: var(--color-orange);
      transform: scale(1.25);
    }

    .results-note {
      max-width: 820px;
      margin: 24px auto 0;
      color: var(--color-muted);
      font-size: 0.74rem;
    }

    .info-video-wrap {
      max-width: 1040px;
      margin: 40px auto 0;
      overflow: hidden;
      background: #101820;
      box-shadow: 0 22px 52px rgb(27 53 85 / 18%);
    }

    .info-video-wrap video {
      display: block;
      width: 100%;
      aspect-ratio: 16 / 9;
      object-fit: cover;
    }

    .tiktok-carousel {
      display: grid;
      max-width: 1200px;
      grid-template-columns: 48px minmax(0, 1fr) 48px;
      align-items: center;
      justify-content: center;
      gap: 20px;
      margin: 40px auto 0;
    }

    .tiktok-carousel__viewport {
      width: 100%;
      overflow: hidden;
    }

    .tiktok-videos {
      display: flex;
      gap: 20px;
      transition: transform 420ms cubic-bezier(0.22, 1, 0.36, 1);
      will-change: transform;
    }

    .tiktok-video {
      flex: 0 0 calc((100% - 40px) / 3);
      overflow: hidden;
      background: #101820;
    }

    .tiktok-video iframe {
      display: block;
      width: 100%;
      aspect-ratio: 9 / 16;
      border: 0;
    }

    .tiktok-carousel__button {
      display: inline-grid;
      width: 48px;
      height: 48px;
      padding: 0;
      border: 1px solid var(--color-line);
      border-radius: 50%;
      color: var(--color-blue);
      background: var(--color-white);
      box-shadow: 0 10px 24px rgb(27 53 85 / 12%);
      cursor: pointer;
      font: inherit;
      font-size: 1.8rem;
      line-height: 1;
      place-items: center;
      transition: color 180ms ease, background 180ms ease, transform 180ms ease;
    }

    .tiktok-carousel__button:hover {
      color: var(--color-white);
      background: var(--color-blue);
      transform: translateY(-2px);
    }

    .tiktok-carousel__button:focus-visible,
    .tiktok-carousel__dot:focus-visible {
      outline: 3px solid rgb(235 103 39 / 35%);
      outline-offset: 3px;
    }

    .tiktok-carousel__dots {
      grid-column: 1 / -1;
      display: flex;
      justify-content: center;
      gap: 10px;
      margin-top: 2px;
    }

    .tiktok-carousel__dot {
      width: 10px;
      height: 10px;
      padding: 0;
      border: 0;
      border-radius: 50%;
      background: #c8d0da;
      cursor: pointer;
      transition: background 180ms ease, transform 180ms ease;
    }

    .tiktok-carousel__dot[aria-current="true"] {
      background: var(--color-orange);
      transform: scale(1.25);
    }

    .events-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
      margin-top: 40px;
      text-align: left;
    }

    .event-card {
      display: flex;
      min-height: 260px;
      flex-direction: column;
      padding: 28px;
      border: 1px solid var(--color-line);
      background: var(--color-white);
      box-shadow: var(--shadow-card);
    }

    .event-date {
      margin: 0 0 18px;
      color: var(--color-orange);
      font-size: 0.75rem;
      font-weight: 700;
      letter-spacing: 0.1em;
      text-transform: uppercase;
    }

    .event-card h3 {
      font-family: var(--font-body);
      font-size: 1.1rem;
      font-weight: 700;
      line-height: 1.45;
    }

    .event-card a {
      margin-top: auto;
      padding-top: 24px;
      color: var(--color-blue);
      font-size: 0.78rem;
      font-weight: 700;
      text-decoration: none;
    }

    .academy-button {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      margin-top: 34px;
      padding: 13px 24px;
      border-radius: 999px;
      color: var(--color-white);
      background: var(--color-blue);
      font-size: 0.78rem;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-decoration: none;
    }

    .academy-button:hover {
      background: var(--color-orange);
    }

    .events-empty {
      max-width: 740px;
      margin: 40px auto 0;
      padding: clamp(34px, 6vw, 58px) 28px;
      border: 1px solid var(--color-line);
      background: var(--color-surface);
      box-shadow: var(--shadow-card);
    }

    .events-empty p {
      margin: 0;
      color: var(--color-muted);
    }

    .faq-list {
      max-width: 850px;
      margin: 40px auto 0;
      text-align: left;
    }

    .faq-item {
      position: relative;
      border-top: 1px solid var(--color-line);
    }

    .faq-item:last-child {
      border-bottom: 1px solid var(--color-line);
    }

    .faq-item summary {
      position: relative;
      padding: 24px 40px 24px 0;
      font-family: var(--font-body);
      font-size: 1.05rem;
      font-weight: 700;
      cursor: pointer;
      list-style: none;
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item summary::after {
      position: absolute;
      top: 50%;
      right: 0;
      color: var(--color-blue);
      content: "+";
      font-size: 1.5rem;
      font-weight: 400;
      line-height: 1;
      transform: translateY(-50%);
    }

    .faq-item[open] summary::after {
      content: "−";
    }

    .faq-item p {
      margin: 0;
      padding: 0 40px 24px 0;
      color: var(--color-muted);
    }

    .site-footer {
      padding-block: clamp(72px, 9vw, 108px);
      border-top: 1px solid var(--color-line);
      text-align: center;
    }

    .journey {
      margin: 18px 0 0;
      font-size: clamp(0.78rem, 2vw, 1.05rem);
      letter-spacing: clamp(0.16em, 0.6vw, 0.42em);
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 0.16em;
      margin: 0;
      font-family: var(--font-display);
      font-size: clamp(2.475rem, 6vw, 4.875rem);
      line-height: 1;
    }

    .footer-brand .brand-badge {
      min-height: 1.45em;
      padding: 0.31em 0.58em 0.26em;
      font-size: 0.27em;
      letter-spacing: 0.1em;
    }

    .legal-note {
      max-width: 760px;
      margin: 32px auto 0;
      color: var(--color-muted);
      font-size: 0.75rem;
    }

    @media (max-width: 900px) {
      .natural-grid {
        grid-template-columns: 1fr;
      }

      .hero {
        min-height: 80svh;
      }

      .feature-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .site-nav {
        display: none;
      }

      .accent {
        display: none;
      }
    }

    @media (min-width: 901px) {

      .hero-tagline {
        font-size: var(--ci-hero-title-size);
      }

      .site-header {
        position: fixed;
        top: 0;
        right: 0;
        left: 0;
        z-index: 30;
      }

      body {
        padding-top: 70px;
      }

      #faq .container {
        display: grid;
        grid-template-columns: 3fr 7fr;
        gap: clamp(32px, 6vw, 96px);
        align-items: start;
      }

      #faq .faq-heading {
        text-align: left;
      }

      #faq .faq-heading .rule {
        margin-inline: 0;
      }

      #faq .faq-list {
        max-width: none;
        margin: 0;
      }

      .study-card {
        padding: 15px;
        border: 1px solid var(--color-line);
        background: var(--color-white);
      }
    }

    @media (max-width: 900px) {
      .header-inner {
        position: relative;
      }

      .site-header {
        position: fixed;
        top: 0;
        right: 0;
        left: 0;
        z-index: 30;
      }

      body {
        padding-top: 70px;
      }

      .site-nav,
      .header-actions,
      .accent {
        display: none;
      }

      .mobile-menu {
        display: block;
        margin-left: auto;
      }

      .mobile-menu-panel {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        z-index: 20;
        display: flex;
        flex-direction: column;
        width: 70vw;
        min-height: 100dvh;
        padding: max(24px, env(safe-area-inset-top)) 24px 32px;
        background: var(--color-white);
        box-shadow: -12px 0 30px rgb(27 53 85 / 14%);
        overflow-y: auto;
      }

      .mobile-menu-close {
        display: grid;
        width: 44px;
        height: 44px;
        margin-left: auto;
        padding: 0;
        border: 1px solid var(--color-line);
        border-radius: 50%;
        color: var(--color-ink);
        background: var(--color-white);
        font-size: 1.5rem;
        line-height: 1;
        place-items: center;
        cursor: pointer;
      }

      .mobile-menu-nav ul {
        display: grid;
        gap: 6px;
        margin: 0;
        padding: 10px 0 0;
        list-style: none;
      }

      .mobile-menu-nav {
        display: grid;
        gap: 8px;
      }

      .mobile-menu-nav > details {
        padding-block: 12px;
        border-top: 1px solid var(--color-line);
      }

      .mobile-menu-nav > details:last-child {
        border-bottom: 1px solid var(--color-line);
      }

      .mobile-menu-nav summary {
        display: flex;
        align-items: center;
        justify-content: space-between;
        color: var(--color-ink);
        font-size: 0.9rem;
        font-weight: 700;
        cursor: pointer;
        list-style: none;
      }

      .mobile-menu-nav summary::-webkit-details-marker {
        display: none;
      }

      .mobile-menu-nav summary::after {
        color: var(--color-orange);
        content: "+";
        font-size: 1.2rem;
        line-height: 1;
      }

      .mobile-menu-nav details[open] summary::after {
        content: "−";
      }

      .mobile-menu-nav a {
        color: var(--color-ink);
        font-size: 0.9rem;
        font-weight: 700;
        text-decoration: none;
      }

      .mobile-menu-nav > .mobile-nav-direct {
        display: block;
        padding-block: 12px;
        border-top: 1px solid var(--color-line);
      }

      .mobile-menu-nav > .mobile-nav-direct:last-child {
        border-bottom: 1px solid var(--color-line);
      }

      .mobile-menu-actions {
        display: grid;
        gap: 10px;
        margin-top: 22px;
      }

      .mobile-menu-actions .header-cta {
        justify-content: center;
      }

      .mobile-menu-social {
        display: flex;
        gap: 12px;
        margin-top: auto;
        padding-top: 24px;
      }

      .mobile-social-link {
        display: grid;
        width: 40px;
        height: 40px;
        border: 1px solid var(--color-line);
        border-radius: 50%;
        color: var(--color-blue);
        place-items: center;
        text-decoration: none;
      }

      .mobile-social-link:hover {
        color: var(--color-white);
        background: var(--color-blue);
      }

      .mobile-social-link svg {
        width: 19px;
        height: 19px;
        fill: currentColor;
      }

      .mobile-social-link--line {
        font-size: 0.62rem;
        font-weight: 700;
        letter-spacing: -0.04em;
      }

    }

    @media (max-width: 640px) {
      :root {
        --page-gutter: 20px;
      }

      html {
        scroll-behavior: auto;
      }

      .signature {
        margin-top: 14px;
        font-size: clamp(2rem, 9vw, 2.75rem);
        line-height: 1.05;
        text-wrap: balance;
      }

      .hero-tagline {
        margin-top: 16px;
        font-size: var(--ci-hero-title-size);
        line-height: 0.98;
      }

      .hero-title {
        margin-top: 18px;
        font-size: clamp(1.05rem, 4.8vw, 1.35rem);
        line-height: 1.35;
        text-wrap: balance;
      }

      .product-grid,
      .ages,
      .particle-gallery,
      .results-grid,
      .events-grid,
      .studies {
        grid-template-columns: 1fr;
      }

      .tiktok-carousel {
        grid-template-columns: 42px auto 42px;
        gap: 10px;
      }

      .results-carousel {
        grid-template-columns: 42px minmax(0, 1fr) 42px;
        gap: 10px;
      }

      .results-carousel__viewport {
        grid-column: 1 / -1;
        grid-row: 1;
      }

      .results-grid {
        gap: 0;
      }

      .result-card {
        flex-basis: 100%;
      }

      .results-carousel__button {
        grid-row: 2;
        width: 42px;
        height: 42px;
      }

      .results-carousel__button--prev {
        grid-column: 1;
      }

      .results-carousel__button--next {
        grid-column: 3;
      }

      .results-carousel__dots {
        grid-column: 2;
        grid-row: 2;
        margin-top: 0;
      }

      .tiktok-carousel__viewport {
        grid-column: 1 / -1;
        grid-row: 1;
      }

      .tiktok-videos {
        gap: 0;
      }

      .tiktok-video {
        flex-basis: 100%;
      }

      .tiktok-carousel__button {
        grid-row: 2;
        width: 42px;
        height: 42px;
      }

      .tiktok-carousel__button--prev {
        grid-column: 1;
      }

      .tiktok-carousel__button--next {
        grid-column: 3;
      }

      .tiktok-carousel__dots {
        grid-column: 2;
        grid-row: 2;
        margin-top: 0;
      }

      .feature-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .ages {
        grid-template-columns: repeat(3, minmax(0, 1fr));
      }

      .age-visual {
        min-height: 0;
      }

      .certification-list {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 8px;
      }

      .certification-logo {
        min-height: 86px;
        padding: 10px;
      }

      .certification-logo img {
        max-width: 68px;
        max-height: 40px;
      }

      .particle-fact {
        grid-template-columns: 1fr;
        gap: 8px;
      }

      .particle-gallery img {
        aspect-ratio: 16 / 10;
      }

      .event-card {
        min-height: 230px;
      }

      .footer-brand {
        font-size: clamp(2.1rem, 9.75vw, 3.15rem);
      }

      .feature-visual {
        min-height: 220px;
      }

      #about .container {
        display: flex;
        flex-direction: column;
      }

      #about .product-grid {
        order: -1;
        margin: 0;
      }

      #about > .container > #about-title,
      #about > .container > .rule,
      #about > .container > .section-kicker,
      #about > .container > .section-copy {
        display: none;
      }


      .header-inner {
        gap: 12px;
      }

      .header-actions {
        gap: 6px;
      }

      .header-cta {
        padding: 8px 10px;
        font-size: 0.6rem;
        letter-spacing: 0.05em;
      }

      .hero-video {
        inset: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
        object-position: center center;
      }

      .hero-content {
        justify-content: flex-end;
      }

      .steps {
        grid-template-columns: 1fr;
      }

      .step {
        min-height: 135px;
      }

      .step-arrow {
        transform: rotate(90deg);
      }

      .keywords {
        line-height: 2;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      html {
        scroll-behavior: auto;
      }

      .results-grid,
      .tiktok-videos {
        transition: none;
      }
    }

/* Browser review: simplified product hero and professional call-to-action. */
body {
  padding-top: 0 !important;
}

.hero {
  isolation: isolate;
  min-height: calc(100svh - 80px);
  color: var(--color-ink);
}

.hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at center, rgb(255 255 255 / 72%), rgb(255 255 255 / 16%) 64%, rgb(220 239 249 / 22%)),
    linear-gradient(180deg, rgb(241 249 253 / 64%), rgb(225 242 251 / 78%));
}

.hero-video {
  z-index: -2;
}

.hero-content {
  width: min(100% - (var(--page-gutter) * 2), 1100px);
  min-height: inherit;
  align-self: auto;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero-brand {
  display: inline-flex;
  align-items: center;
  gap: .18em;
  margin-bottom: clamp(24px, 4vw, 42px);
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(2.7rem, 5vw, 4.8rem);
  line-height: 1;
}

.hero-brand .brand-badge {
  font-size: .27em;
}

.hero .signature {
  margin: 0;
  color: var(--color-ink);
}

.hero-tagline {
  max-width: 1000px;
  color: var(--color-ink);
  text-align: center;
}

.hero-gradient {
  color: transparent;
  background: linear-gradient(90deg, var(--color-orange) 10%, #9b6672 48%, var(--color-blue) 90%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title {
  color: var(--color-ink);
  text-align: center;
}

.medical-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 30px;
  padding: 14px 24px;
  border: 1px solid var(--color-blue);
  color: var(--color-blue);
  background: var(--color-white);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  line-height: 1.2;
  text-decoration: none;
  transition: color .2s ease, background-color .2s ease;
}

.medical-cta:hover,
.medical-cta:focus-visible {
  color: var(--color-white);
  background: var(--color-blue);
}

@media (max-width: 900px) {
  .hero {
    min-height: calc(100svh - 76px);
  }

  .hero-content {
    min-height: inherit;
    justify-content: center;
  }

  .hero-tagline {
    font-size: clamp(2.6rem, 12vw, 4.5rem);
  }
}

/* Hero proportion and single-line brand lockup. */
.hero-intro {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(18px, 2.5vw, 38px);
  margin-bottom: clamp(24px, 4vw, 42px);
  white-space: nowrap;
}

.hero-brand,
.hero .signature {
  margin: 0;
  font-size: clamp(1.9rem, 3vw, 2.5rem);
  line-height: 1;
}

.hero-brand .brand-word {
  letter-spacing: .2em;
}

.hero-brand .brand-badge {
  font-size: .42em;
}

@media (min-width: 701px) {
  .hero {
    width: 100%;
    min-height: 0;
    aspect-ratio: 16 / 9;
  }

  .hero-content {
    min-height: 0;
  }
}

@media (max-width: 700px) {
  .hero {
    min-height: 72svh;
    aspect-ratio: auto;
  }

  .hero-intro {
    gap: 12px;
  }

  .hero-brand,
  .hero .signature {
    font-size: clamp(1.2rem, 5.3vw, 1.65rem);
  }
}

/* Final responsive scale and GANA social links. */
.hero-brand,
.hero .signature {
  font-size: clamp(3.25rem, 5.1vw, 4.5rem);
}

.gana-socials {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 20px;
}

.gana-social-link {
  display: inline-grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--color-blue) 35%, white);
  border-radius: 50%;
  color: var(--color-blue);
  background: var(--color-white);
  transition: color .2s ease, background-color .2s ease, border-color .2s ease;
}

.gana-social-link svg {
  width: 19px;
  height: 19px;
  fill: currentColor;
}

.gana-social-link:hover,
.gana-social-link:focus-visible {
  color: var(--color-white);
  background: var(--color-blue);
  border-color: var(--color-blue);
}

@media (max-width: 700px) {
  .hero {
    min-height: clamp(500px, 62svh, 580px);
  }

  .hero-content {
    min-height: clamp(500px, 62svh, 580px);
  }

  .hero-brand,
  .hero .signature {
    font-size: clamp(2.1rem, 10vw, 3.25rem);
  }
}

/* Clay theme system: GANA hero and brand section */
.hero::before{background:rgba(255,255,255,.60)!important;opacity:1!important}.hero-tagline{display:flex;justify-content:center;align-items:baseline;gap:.25em;white-space:nowrap}.hero-gradient{background:linear-gradient(90deg,#ef7f1a 0%,#ef7f1a 35%,#1468b3 100%);-webkit-background-clip:text;background-clip:text;color:transparent!important}.hero-blue{color:#1468b3!important}.site-footer#contact{color:#102d3c;background:#fff!important}.site-footer#contact .journey,.site-footer#contact .legal-note{color:#526b78}.site-footer#contact .medical-cta{color:#1468b3;border-color:#1468b3;background:#fff}.site-footer#contact .gana-social-link{color:#1468b3;border-color:rgba(20,104,179,.35);background:#fff}@media(max-width:620px){.hero-tagline{font-size:clamp(1rem,4.4vw,1.35rem)!important;gap:.2em}}

/* Refined hero spacing and restored cool-blue veil. */
.hero::before {
  background:
    radial-gradient(circle at center, rgb(255 255 255 / 38%), rgb(255 255 255 / 8%) 64%, rgb(220 239 249 / 12%)),
    linear-gradient(180deg, rgb(241 249 253 / 28%), rgb(225 242 251 / 42%));
}

.hero-title {
  margin: 0 0 clamp(22px, 3vw, 34px);
  line-height: 1.3;
}

.hero-intro {
  gap: 0;
}

.hero-brand,
.hero .signature {
  line-height: .92;
}

/* Final hero hierarchy: prominent two-line brand, compact one-line product descriptor. */
.hero::before {
  background: rgb(255 255 255 / 60%);
}

.hero-intro {
  flex-direction: column;
  gap: clamp(14px, 2vw, 24px);
}

.hero-brand,
.hero .signature {
  font-size: clamp(3.25rem, 7vw, 6rem);
}

.hero-brand .brand-word {
  letter-spacing: 0;
}

.hero-brand .brand-badge {
  font-size: .26em;
}

.hero-tagline {
  width: 100%;
  max-width: none;
  margin-top: 0;
  font-size: clamp(1rem, 2.54vw, 1.625rem);
  line-height: 1.1;
  white-space: nowrap;
  text-wrap: nowrap;
}

.hero-blue {
  color: var(--color-blue);
}

@media (max-width: 700px) {
  .hero-brand,
  .hero .signature {
    font-size: clamp(2.2rem, 11vw, 3.6rem);
  }

  .hero-brand .brand-badge {
    font-size: .25em;
  }

  .hero-tagline {
    font-size: clamp(.88rem, 4vw, 1.25rem);
  }
}

/* Keep these review constraints last so earlier responsive rules cannot override them. */
.hero-brand,
.hero .signature {
  font-size: clamp(3.25rem, 5.1vw, 4.5rem);
}

@media (max-width: 700px) {
  .hero,
  .hero-content {
    min-height: clamp(500px, 62svh, 580px);
  }

  .hero-brand,
  .hero .signature {
    font-size: clamp(2.1rem, 10vw, 3.25rem);
  }
}


/* Clay V2 final GANA review */
.gana-plla-page main #top.hero::before{background:rgba(255,255,255,.4)!important;opacity:1!important}
.gana-plla-page footer#contact .footer-brand{display:inline-flex;align-items:center;justify-content:center;gap:.16em;font-family:Georgia,"Times New Roman",serif;font-size:clamp(3.25rem,5.1vw,4.5rem);line-height:.92;color:#222b36}
.gana-plla-page footer#contact .footer-brand>span:first-child{display:block;font:inherit;line-height:inherit;color:inherit}
.gana-plla-page footer#contact .footer-brand>.brand-badge{display:grid;place-items:center;padding:.34em .7em .28em;border-radius:.36em;background:#e97816;color:#fff;font-family:"Leelawadee UI",Tahoma,Arial,sans-serif;font-size:.26em;font-weight:700;line-height:1;letter-spacing:.12em}
@media (max-width:820px){body.gana-plla-page main#main-content{padding-top:0!important}body.gana-plla-page #top.hero{position:relative;min-height:clamp(560px,72svh,650px)!important;height:auto!important;padding:0!important;overflow:hidden}body.gana-plla-page #top .hero-video{position:absolute!important;inset:0!important;width:100%!important;height:100%!important;object-fit:cover!important;object-position:center!important}body.gana-plla-page #top .hero-content{position:relative;z-index:2;min-height:inherit;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:42px 20px!important}}
@media (max-width:700px){.gana-plla-page footer#contact .footer-brand{font-size:clamp(2.1rem,10vw,3.25rem)}}


/* GANA hero: plain 40% white wash only; no decorative ring. */
body.gana-plla-page main #top.hero::before{content:""!important;display:block!important;position:absolute!important;inset:0!important;background:rgba(255,255,255,.4)!important;opacity:1!important;z-index:-1!important}
body.gana-plla-page main #top.hero::after{content:none!important;display:none!important}