:root {
  --ink: #18304a;
  --navy: #1f4d75;
  --muted: #66788d;
  --line: #dbeaf0;
  --surface: #ffffff;
  --soft: #f6fbfb;
  --mist: #eaf8f7;
  --aqua: #33c5c4;
  --teal: #1fa5aa;
  --blue: #3677c8;
  --green: #72bf44;
  --pearl: #fbfefe;
  --shadow: 0 22px 62px rgba(31, 77, 117, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--soft);
  color: var(--ink);
  font-family: Inter, system-ui, sans-serif;
  animation: pageFade 700ms ease both;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 210px 1fr auto;
  align-items: center;
  min-height: 86px;
  padding: 12px clamp(18px, 4vw, 58px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(219, 234, 240, 0.85);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  width: fit-content;
}

.brand img {
  width: 124px;
  height: 58px;
  object-fit: contain;
  object-position: left center;
}

.top-nav {
  display: flex;
  justify-content: center;
  gap: clamp(18px, 3vw, 34px);
  color: #405a70;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.top-nav a {
  position: relative;
  padding: 31px 0;
}

.top-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 20px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--aqua), var(--green));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

.top-nav a:hover::after {
  transform: scaleX(1);
}

.header-cta,
.primary-action,
.secondary-action,
.cart-whatsapp,
.primary-product-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border-radius: 999px;
  padding: 0 20px;
  font-weight: 800;
}

.header-cta,
.primary-action,
.cart-whatsapp,
.primary-product-action {
  background: linear-gradient(135deg, var(--blue), var(--aqua));
  color: white;
  box-shadow: 0 14px 32px rgba(54, 119, 200, 0.22);
}

.secondary-action,
.ghost-button {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.82);
  color: var(--navy);
}

.menu-toggle {
  display: none;
  justify-self: end;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--navy);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(330px, 1.04fr);
  min-height: calc(100vh - 86px);
  overflow: hidden;
  background:
    radial-gradient(circle at 78% 24%, rgba(51, 197, 196, 0.22), transparent 32%),
    radial-gradient(circle at 18% 78%, rgba(114, 191, 68, 0.13), transparent 30%),
    linear-gradient(135deg, #ffffff 0%, #f3fbfb 48%, #e7f7f5 100%);
}

@keyframes pageFade {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-grid {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(31, 77, 117, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 77, 117, 0.045) 1px, transparent 1px);
  background-size: 120px 120px;
  mask-image: linear-gradient(90deg, black, transparent 76%);
}

.hero::after {
  content: "";
  position: absolute;
  right: -110px;
  bottom: -140px;
  width: 430px;
  height: 430px;
  border-radius: 999px;
  border: 1px solid rgba(51, 197, 196, 0.36);
  background: rgba(255, 255, 255, 0.24);
}

.hero-copy,
.hero-product {
  position: relative;
  z-index: 1;
}

.hero-copy {
  align-self: center;
  padding: clamp(46px, 7vw, 92px) clamp(22px, 5vw, 72px);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: 0;
}

h1,
h2 {
  font-family: "Playfair Display", Georgia, serif;
}

h1 {
  max-width: 720px;
  color: var(--navy);
  font-size: clamp(46px, 6vw, 88px);
  line-height: 0.98;
}

h2 {
  color: var(--navy);
  font-size: clamp(32px, 4vw, 56px);
  line-height: 1.05;
}

h3 {
  color: var(--navy);
  font-size: 20px;
}

.hero-text {
  max-width: 650px;
  margin: 26px 0;
  color: var(--muted);
  font-size: clamp(17px, 1.8vw, 21px);
  line-height: 1.72;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-top: 30px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.quick-links a {
  min-height: 34px;
  border: 1px solid rgba(51, 197, 196, 0.3);
  border-radius: 999px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--navy);
  text-transform: none;
}

.hero-product {
  display: grid;
  place-items: center;
  min-height: 610px;
  padding: clamp(24px, 5vw, 54px);
  overflow: hidden;
}

.pen-hero-image {
  width: min(96%, 720px);
  max-height: 660px;
  object-fit: contain;
  filter: drop-shadow(0 34px 48px rgba(31, 77, 117, 0.2));
  animation: penFloat 5.8s ease-in-out infinite, penGlow 3.8s ease-in-out infinite;
}

@keyframes penFloat {
  0%, 100% {
    transform: translateY(0) rotate(-3deg) scale(1);
  }
  50% {
    transform: translateY(-18px) rotate(1.8deg) scale(1.025);
  }
}

@keyframes penGlow {
  0%, 100% {
    filter: drop-shadow(0 30px 42px rgba(31, 77, 117, 0.18));
  }
  50% {
    filter: drop-shadow(0 38px 58px rgba(51, 197, 196, 0.3));
  }
}

.domain-card {
  position: absolute;
  right: clamp(20px, 6vw, 72px);
  bottom: clamp(28px, 8vw, 72px);
  display: grid;
  gap: 5px;
  min-width: 270px;
  border: 1px solid rgba(51, 197, 196, 0.26);
  border-radius: 12px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--navy);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.domain-card span {
  color: var(--teal);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.domain-card strong {
  font-weight: 900;
}

.proof-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--line);
  background: white;
}

.proof-strip article {
  min-height: 132px;
  border-right: 1px solid var(--line);
  padding: 24px clamp(18px, 3vw, 34px);
}

.proof-strip strong,
.proof-strip span {
  display: block;
}

.proof-strip strong {
  color: var(--navy);
}

.proof-strip span {
  margin-top: 8px;
  color: var(--muted);
  line-height: 1.5;
}

.advisor-band {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 26px;
  align-items: center;
  margin: clamp(32px, 5vw, 72px) clamp(18px, 5vw, 70px) 0;
  border: 1px solid rgba(51, 197, 196, 0.26);
  border-radius: 14px;
  padding: clamp(26px, 4vw, 42px);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(234, 248, 247, 0.96)),
    radial-gradient(circle at 90% 20%, rgba(114, 191, 68, 0.14), transparent 28%);
  box-shadow: var(--shadow);
}

.advisor-band p:last-child {
  max-width: 760px;
  color: var(--muted);
  line-height: 1.7;
}

.education-section,
.areas-section,
.catalog-section,
.professional-section {
  padding: clamp(56px, 7vw, 96px) clamp(18px, 5vw, 70px);
}

.section-heading {
  max-width: 820px;
  margin-bottom: 32px;
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.7;
}

.section-heading.compact {
  margin-inline: auto;
  text-align: center;
}

.education-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.education-grid article,
.area-card,
.product-card,
.professional-grid article,
.filters,
.cart-panel {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: white;
  box-shadow: 0 16px 38px rgba(31, 77, 117, 0.08);
}

.education-grid article {
  min-height: 230px;
  padding: 22px;
}

.education-grid span {
  display: inline-flex;
  margin-bottom: 42px;
  color: var(--teal);
  font-size: 30px;
  font-weight: 900;
}

.education-grid p,
.area-card p,
.product-body p,
.professional-grid p {
  color: var(--muted);
  line-height: 1.62;
}

.areas-section {
  background: linear-gradient(180deg, #edfafa, #f8fcfc);
}

.areas-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.area-card {
  display: flex;
  flex-direction: column;
  min-height: 276px;
  overflow: hidden;
}

.area-card-top {
  min-height: 108px;
  padding: 18px;
  background:
    linear-gradient(135deg, rgba(235, 250, 249, 0.98), rgba(218, 244, 244, 0.98)),
    radial-gradient(circle at 86% 18%, rgba(114, 191, 68, 0.22), transparent 40%);
  color: var(--navy);
}

.area-card-top span {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  border-radius: 999px;
  padding: 0 10px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--teal);
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
}

.area-card-top h3 {
  margin-top: 16px;
  color: var(--navy);
}

.area-card-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 18px;
}

.area-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.area-tags span,
.product-meta span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  color: var(--navy);
  font-size: 12px;
  font-weight: 800;
}

.shop-layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr) 320px;
  gap: 22px;
  align-items: start;
}

.filters,
.cart-panel {
  position: sticky;
  top: 106px;
  padding: 20px;
}

.filters label,
.filter-label {
  display: block;
  margin-bottom: 10px;
  color: var(--navy);
  font-size: 13px;
  font-weight: 800;
}

.filters input {
  width: 100%;
  height: 46px;
  margin-bottom: 20px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0 14px;
  color: var(--ink);
}

.filter-buttons {
  display: grid;
  gap: 8px;
}

.filter-buttons button,
.ghost-button {
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0 12px;
  background: white;
  color: var(--muted);
  cursor: pointer;
  font-weight: 800;
  text-align: left;
}

.filter-buttons button.is-active {
  border-color: rgba(51, 197, 196, 0.48);
  background: #eafafa;
  color: var(--navy);
}

.catalog-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 16px;
  color: var(--muted);
  font-weight: 800;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.product-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  overflow: hidden;
}

.product-top {
  min-height: 124px;
  padding: 20px;
  background:
    linear-gradient(135deg, rgba(244, 252, 252, 0.98), rgba(229, 247, 246, 0.98)),
    radial-gradient(circle at 86% 18%, rgba(54, 119, 200, 0.15), transparent 44%);
  color: var(--navy);
  position: relative;
  overflow: hidden;
}

.product-top span {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  border-radius: 999px;
  padding: 0 10px;
  background: rgba(255, 255, 255, 0.88);
  color: var(--teal);
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
}

.product-top h3 {
  margin-top: 15px;
  color: var(--navy);
  max-width: 68%;
}

.peptide-visual {
  position: absolute;
  right: 10px;
  bottom: 4px;
  width: 136px;
  height: 118px;
  pointer-events: none;
}

.peptide-visual img {
  position: absolute;
  right: -8px;
  bottom: -2px;
  z-index: 2;
  width: 128px;
  height: 108px;
  object-fit: contain;
  transform: rotate(-11deg);
  filter: drop-shadow(0 12px 20px rgba(31, 77, 117, 0.16));
  animation: productKitFloat 4.8s ease-in-out infinite;
}

.orbit,
.spark {
  position: absolute;
  display: block;
  border-radius: 999px;
}

.orbit {
  inset: 18px;
  border: 1px solid rgba(51, 197, 196, 0.34);
  animation: orbitSpin 6s linear infinite;
}

.orbit-two {
  inset: 28px 12px 12px 26px;
  border-color: rgba(114, 191, 68, 0.34);
  animation-duration: 8s;
  animation-direction: reverse;
}

.spark {
  width: 10px;
  height: 10px;
  background: var(--aqua);
  box-shadow: 0 0 18px rgba(51, 197, 196, 0.7);
  animation: sparkPulse 2.2s ease-in-out infinite;
}

.spark-one {
  right: 18px;
  top: 22px;
}

.spark-two {
  left: 14px;
  bottom: 24px;
  background: var(--green);
  animation-delay: 500ms;
}

.peptide-visual-brain .orbit {
  border-radius: 40% 60% 45% 55%;
}

.peptide-visual-sleep .spark {
  background: #7aa7ff;
}

.peptide-visual-immune .orbit {
  border-style: dashed;
}

@keyframes orbitSpin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes sparkPulse {
  0%, 100% {
    opacity: 0.45;
    transform: scale(0.8);
  }
  50% {
    opacity: 1;
    transform: scale(1.25);
  }
}

@keyframes productKitFloat {
  0%, 100% {
    transform: translateY(0) rotate(-11deg);
  }
  50% {
    transform: translateY(-7px) rotate(-7deg);
  }
}

.reveal-card {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 500ms ease, transform 500ms ease;
}

.reveal-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.product-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 15px;
  padding: 20px;
}

.product-kit-image {
  display: grid;
  place-items: center;
  min-height: 156px;
  margin: -4px -4px 2px;
  border: 1px solid rgba(51, 197, 196, 0.18);
  border-radius: 12px;
  background:
    radial-gradient(circle at 78% 18%, rgba(51, 197, 196, 0.16), transparent 34%),
    linear-gradient(135deg, #ffffff, #edfafa);
  overflow: hidden;
}

.product-kit-image img {
  width: min(92%, 250px);
  max-height: 150px;
  object-fit: contain;
  filter: drop-shadow(0 18px 24px rgba(31, 77, 117, 0.14));
  animation: productKitFloat 5.2s ease-in-out infinite;
}

.product-body p {
  margin: 0;
}

.product-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.product-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: auto;
}

.product-actions a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 800;
}

.product-actions a {
  border: 1px solid var(--line);
  color: var(--blue);
}

.product-actions a.primary-product-action {
  border: 0;
  color: white;
  text-align: center;
}

.cart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  color: var(--navy);
  font-weight: 800;
}

.cart-header strong {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 999px;
  background: var(--aqua);
  color: white;
}

.cart-items {
  display: grid;
  gap: 10px;
  min-height: 90px;
  padding: 16px 0;
}

.empty-cart,
.cart-panel small {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.cart-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  color: var(--navy);
  font-weight: 800;
}

.cart-item button {
  width: 30px;
  height: 30px;
  border: 0;
  border-radius: 999px;
  background: #eef7f7;
  color: var(--muted);
  cursor: pointer;
  font-weight: 900;
}

.cart-whatsapp {
  width: 100%;
  margin-bottom: 12px;
}

.direct-order-panel {
  display: grid;
  gap: 16px;
  padding: 18px 0 12px;
}

.direct-order-panel p,
.direct-order-panel li {
  color: var(--muted);
  line-height: 1.6;
}

.direct-order-panel p {
  margin: 0;
}

.direct-order-panel ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 18px;
}

.checkout-form {
  display: grid;
  gap: 12px;
  padding: 16px 0 4px;
  border-top: 1px solid var(--line);
}

.checkout-form h3 {
  margin-top: 0;
}

.checkout-form p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.checkout-form label {
  display: grid;
  gap: 6px;
  color: var(--navy);
  font-size: 12px;
  font-weight: 800;
}

.checkout-form input {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0 12px;
  color: var(--ink);
  background: #fbfefe;
}

.professional-section {
  background:
    radial-gradient(circle at 14% 20%, rgba(51, 197, 196, 0.16), transparent 30%),
    linear-gradient(180deg, #ffffff, #eefafa);
}

.professional-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  max-width: 980px;
  margin: 0 auto;
}

.professional-grid article {
  padding: 26px;
}

.professional-grid span {
  color: var(--teal);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.professional-grid a {
  display: inline-flex;
  margin-top: 10px;
  color: var(--blue);
  font-weight: 900;
}

.info-band {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 34px;
  align-items: center;
  padding: clamp(42px, 7vw, 78px) clamp(18px, 6vw, 82px);
  background: white;
  color: var(--ink);
}

.info-band p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.75;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(18px, 5vw, 70px);
  background: #f7fcfc;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.site-footer div {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--navy);
  font-weight: 800;
}

.site-footer img {
  width: 70px;
  height: 42px;
  object-fit: contain;
}

.site-footer a {
  color: var(--blue);
  font-weight: 800;
}

.footer-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  align-items: center;
  margin: 0;
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.social-link svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.detail-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.9fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
  min-height: calc(100vh - 86px);
  padding: clamp(46px, 7vw, 92px) clamp(20px, 6vw, 82px);
  overflow: hidden;
  background:
    radial-gradient(circle at 82% 24%, rgba(51, 197, 196, 0.2), transparent 32%),
    linear-gradient(135deg, #ffffff, #edfafa);
}

.detail-copy p:not(.eyebrow) {
  max-width: 690px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.75;
}

.back-link {
  display: inline-flex;
  margin-bottom: 22px;
  color: var(--blue);
  font-weight: 900;
}

.detail-tags {
  margin: 24px 0;
}

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

.detail-add-button {
  border: 0;
  cursor: pointer;
}

.detail-add-button.is-added {
  background: linear-gradient(135deg, var(--green), var(--aqua));
}

.secondary-detail-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 18px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--navy);
  font-weight: 900;
}

.detail-visual {
  position: relative;
  width: min(100%, 520px);
  height: 480px;
  justify-self: center;
}

.detail-visual img {
  width: min(92%, 480px);
  height: min(92%, 430px);
  right: 8px;
  bottom: 30px;
  animation: productKitFloat 4.8s ease-in-out infinite;
}

.detail-section {
  padding: clamp(56px, 7vw, 96px) clamp(18px, 5vw, 70px);
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.deep-info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.deep-info-card,
.change-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  background:
    radial-gradient(circle at 86% 16%, rgba(51, 197, 196, 0.14), transparent 30%),
    #ffffff;
  box-shadow: 0 16px 38px rgba(31, 77, 117, 0.08);
}

.deep-info-card {
  padding: 24px;
}

.deep-info-card span {
  display: inline-flex;
  margin-bottom: 12px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.deep-info-card p,
.change-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.72;
}

.changes-section {
  padding-top: 0;
}

.changes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.change-card {
  display: grid;
  gap: 14px;
  padding: 18px;
}

.change-card span {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background:
    linear-gradient(135deg, var(--aqua), var(--green));
  box-shadow: 0 12px 24px rgba(51, 197, 196, 0.22);
}

.presentation-section {
  background: linear-gradient(180deg, #f8fcfc, #eefafa);
}

.presentation-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(280px, 1.1fr);
  gap: 20px;
  align-items: stretch;
}

.presentation-image-card,
.presentation-copy-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: white;
  box-shadow: 0 18px 42px rgba(31, 77, 117, 0.09);
}

.presentation-image-card {
  display: grid;
  place-items: center;
  min-height: 380px;
  overflow: hidden;
  background:
    radial-gradient(circle at 74% 26%, rgba(51, 197, 196, 0.18), transparent 34%),
    radial-gradient(circle at 20% 80%, rgba(114, 191, 68, 0.1), transparent 30%),
    linear-gradient(135deg, #ffffff, #f1fbfb);
}

.presentation-image-card img {
  width: min(92%, 560px);
  max-height: 360px;
  object-fit: contain;
  filter: drop-shadow(0 22px 30px rgba(31, 77, 117, 0.14));
  animation: productKitFloat 5.2s ease-in-out infinite;
}

.presentation-copy-card {
  padding: clamp(24px, 4vw, 38px);
}

.presentation-copy-card > span {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  border-radius: 999px;
  padding: 0 12px;
  background: #eafafa;
  color: var(--teal);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.presentation-copy-card h3 {
  margin-top: 18px;
  font-family: "Playfair Display", Georgia, serif;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.05;
}

.presentation-copy-card p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.68;
}

.presentation-copy-card ul {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.presentation-copy-card li {
  position: relative;
  padding-left: 28px;
  color: var(--navy);
  font-weight: 800;
}

.presentation-copy-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35em;
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--aqua), var(--green));
  box-shadow: 0 0 0 5px rgba(51, 197, 196, 0.12);
}

.before-after-section {
  background: linear-gradient(180deg, #f8fcfc, #eefafa);
}

.before-after-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.concept-card {
  position: relative;
  min-height: 310px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
  background:
    radial-gradient(circle at 82% 20%, rgba(51, 197, 196, 0.22), transparent 32%),
    linear-gradient(135deg, #ffffff, #edfafa);
  box-shadow: 0 16px 38px rgba(31, 77, 117, 0.08);
}

.before-after-image {
  position: absolute;
  left: 22px;
  right: 22px;
  top: 68px;
  width: calc(100% - 44px);
  height: 150px;
  border: 1px solid rgba(51, 197, 196, 0.18);
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 12px 28px rgba(31, 77, 117, 0.1);
}

.concept-before .before-after-image {
  object-position: left center;
}

.concept-after .before-after-image {
  object-position: right center;
}

.concept-after {
  background:
    radial-gradient(circle at 78% 18%, rgba(114, 191, 68, 0.22), transparent 34%),
    linear-gradient(135deg, #ffffff, #effbed);
}

.concept-card > span {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  border-radius: 999px;
  padding: 0 12px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--teal);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.concept-card h3 {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 22px;
  max-width: 420px;
  font-family: "Playfair Display", Georgia, serif;
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.05;
}

.concept-illustration {
  position: absolute;
  inset: 58px 20px 72px;
  display: none;
}

.concept-illustration::before {
  content: "";
  position: absolute;
  inset: 16px 20%;
  border-radius: 999px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.18)),
    radial-gradient(circle at 50% 35%, rgba(51, 197, 196, 0.34), transparent 42%);
  border: 1px solid rgba(51, 197, 196, 0.28);
  filter: drop-shadow(0 18px 24px rgba(31, 77, 117, 0.1));
}

.concept-illustration i {
  position: absolute;
  display: block;
  border-radius: 999px;
  background: rgba(51, 197, 196, 0.36);
  animation: sparkPulse 2.6s ease-in-out infinite;
}

.concept-illustration i:nth-child(1) {
  width: 48px;
  height: 48px;
  left: 18%;
  top: 22%;
}

.concept-illustration i:nth-child(2) {
  width: 78px;
  height: 78px;
  right: 16%;
  top: 10%;
  background: rgba(114, 191, 68, 0.28);
  animation-delay: 400ms;
}

.concept-illustration i:nth-child(3) {
  width: 34px;
  height: 34px;
  right: 32%;
  bottom: 12%;
  background: rgba(54, 119, 200, 0.25);
  animation-delay: 800ms;
}

.concept-metabolic .concept-illustration::before,
.concept-mitochondria .concept-illustration::before {
  border-radius: 44% 56% 48% 52%;
}

.concept-brain .concept-illustration::before {
  border-radius: 48% 52% 38% 62%;
}

.concept-sleep .concept-illustration i {
  background: rgba(122, 167, 255, 0.32);
}

.concept-immune .concept-illustration::before {
  border-style: dashed;
}

.benefit-card {
  min-height: 220px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
  background: white;
  box-shadow: 0 16px 38px rgba(31, 77, 117, 0.08);
}

.benefit-card span {
  display: inline-flex;
  margin-bottom: 42px;
  color: var(--teal);
  font-size: 30px;
  font-weight: 900;
}

.benefit-card p {
  color: var(--muted);
  line-height: 1.62;
}

.side-effects-section {
  padding-top: 0;
}

.side-effects-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.side-effects-list span {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 14px;
  background: white;
  color: var(--navy);
  font-weight: 800;
  box-shadow: 0 10px 26px rgba(31, 77, 117, 0.06);
}

@media (max-width: 1180px) {
  .site-header {
    grid-template-columns: 180px 1fr auto;
  }

  .shop-layout {
    grid-template-columns: 230px minmax(0, 1fr);
  }

  .cart-panel {
    position: static;
    grid-column: 1 / -1;
  }

  .areas-grid,
  .education-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: 1fr auto;
    min-height: 78px;
  }

  .brand img {
    width: 92px;
    height: 52px;
  }

  .top-nav,
  .header-cta {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .site-header.is-open .top-nav {
    position: absolute;
    left: 18px;
    right: 18px;
    top: 78px;
    display: grid;
    gap: 0;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: white;
    box-shadow: var(--shadow);
  }

  .site-header.is-open .top-nav a {
    padding: 16px;
    border-bottom: 1px solid var(--line);
    color: var(--navy);
  }

  .site-header.is-open .top-nav a::after {
    display: none;
  }

  .hero,
  .advisor-band,
  .info-band,
  .detail-hero {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    padding-bottom: 20px;
  }

  .hero-product {
    min-height: 440px;
    padding-top: 0;
  }

  .domain-card {
    position: relative;
    right: auto;
    bottom: auto;
    margin-top: 12px;
  }

  .proof-strip {
    grid-template-columns: repeat(2, 1fr);
  }

  .shop-layout,
  .products-grid,
  .professional-grid,
  .benefit-grid,
  .deep-info-grid,
  .changes-grid,
  .before-after-grid,
  .presentation-grid {
    grid-template-columns: 1fr;
  }

  .filters {
    position: static;
  }
}

@media (max-width: 560px) {
  h1 {
    font-size: 42px;
  }

  .hero-copy {
    padding: 34px 20px 18px;
  }

  .hero-product {
    min-height: 370px;
  }

  .pen-hero-image {
    width: min(96%, 420px);
  }

  .domain-card {
    min-width: 0;
    width: 100%;
  }

  .proof-strip,
  .areas-grid,
  .education-grid {
    grid-template-columns: 1fr;
  }

  .product-actions {
    grid-template-columns: 1fr;
  }

  .catalog-toolbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-footer {
    align-items: stretch;
    flex-direction: column;
  }

}