:root {
  --teal: #4fbcc4;
  --teal-deep: #2a9aa3;
  --teal-soft: #d7f2f4;
  --navy: #0c2433;
  --navy-mid: #16384c;
  --ink: #14232e;
  --muted: #5a6d78;
  --foam: #eef8f9;
  --sand: #f3f7f8;
  --white: #ffffff;
  --line: rgba(15, 45, 60, 0.1);
  --shadow: 0 24px 60px rgba(12, 36, 51, 0.12);
  --radius: 1.25rem;
  --font-display: "Sora", system-ui, sans-serif;
  --font-body: "Outfit", system-ui, sans-serif;
  --font-script: "Great Vibes", cursive;
  --header-h: 4.25rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.6;
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(79, 188, 196, 0.18), transparent 60%),
    radial-gradient(900px 500px at 100% 20%, rgba(42, 154, 163, 0.12), transparent 55%),
    linear-gradient(180deg, #f7fbfc 0%, var(--sand) 40%, #eaf4f6 100%);
  overflow-x: hidden;
}

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

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

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
}

h1 { font-size: clamp(2.1rem, 5vw, 3.6rem); font-weight: 700; }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.6rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 600; }

p { margin: 0 0 1rem; }

.container {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.container.narrow {
  width: min(720px, calc(100% - 2rem));
  text-align: center;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 0.75rem;
  color: var(--teal-deep);
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.lead {
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  color: var(--muted);
  max-width: 42rem;
}

.section {
  padding: clamp(4rem, 8vw, 6.5rem) 0;
  position: relative;
}

.section-head {
  margin-bottom: 2.5rem;
  max-width: 40rem;
}

.section-head.light .eyebrow,
.section-head.light h2 {
  color: var(--white);
}

.section-head.light .lead {
  color: rgba(255, 255, 255, 0.78);
}

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1rem, 3vw, 2rem);
  background: rgba(247, 251, 252, 0.72);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(247, 251, 252, 0.92);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.brand-mark {
  width: 3.4rem;
  height: auto;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-text strong {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--navy);
}

.brand-text em {
  font-family: var(--font-script);
  font-style: normal;
  font-size: 1.35rem;
  color: var(--teal-deep);
  margin-top: -0.15rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.site-nav a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--navy-mid);
  transition: color 0.2s;
}

.site-nav a:hover {
  color: var(--teal-deep);
}

.nav-cta {
  padding: 0.55rem 1rem;
  border-radius: 999px;
  background: var(--navy);
  color: var(--white) !important;
}

.nav-cta:hover {
  background: var(--teal-deep) !important;
  color: var(--white) !important;
}

.nav-backdrop {
  display: none;
}

.nav-toggle {
  display: none;
  position: relative;
  z-index: 70;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid transparent;
  border-radius: 0.85rem;
  background: rgba(255, 255, 255, 0.72);
  padding: 0;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.25s var(--ease), border-color 0.25s, box-shadow 0.25s;
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  background: var(--white);
  border-color: rgba(79, 188, 196, 0.35);
  box-shadow: 0 8px 20px rgba(12, 36, 51, 0.08);
  outline: none;
}

.nav-toggle-box {
  position: relative;
  display: block;
  width: 1.2rem;
  height: 0.85rem;
  margin: 0 auto;
}

.nav-toggle-box span {
  position: absolute;
  left: 0;
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--navy);
  transition: transform 0.3s var(--ease), opacity 0.2s, top 0.3s var(--ease), width 0.3s;
}

.nav-toggle-box span:nth-child(1) { top: 0; }
.nav-toggle-box span:nth-child(2) { top: calc(50% - 1px); width: 75%; }
.nav-toggle-box span:nth-child(3) { top: calc(100% - 2px); width: 55%; }

.nav-toggle[aria-expanded="true"] {
  background: var(--navy);
  border-color: var(--navy);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-box span {
  background: var(--white);
  width: 100%;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(1) {
  top: calc(50% - 1px);
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(3) {
  top: calc(50% - 1px);
  transform: rotate(-45deg);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 3rem;
  padding: 0.75rem 1.35rem;
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform 0.25s var(--ease), background 0.25s, color 0.25s, border-color 0.25s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--teal);
  color: var(--navy);
}

.btn-primary:hover {
  background: #63cdd4;
}

.btn-ghost {
  border: 1.5px solid rgba(255, 255, 255, 0.55);
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.16);
}

.btn-ghost.dark {
  border-color: rgba(12, 36, 51, 0.2);
  color: var(--navy);
  background: transparent;
}

.btn-ghost.dark:hover {
  border-color: var(--teal-deep);
  color: var(--teal-deep);
}

/* Hero — one composition, full-bleed */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: end;
  padding: calc(var(--header-h) + 1.5rem) 0 3.5rem;
  color: var(--white);
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 28% center;
  transform: scale(1.04);
  animation: hero-drift 18s var(--ease) infinite alternate;
}

.hero-veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(8, 24, 34, 0.82) 0%, rgba(8, 24, 34, 0.55) 42%, rgba(8, 24, 34, 0.28) 68%, rgba(8, 24, 34, 0.45) 100%),
    linear-gradient(180deg, rgba(8, 24, 34, 0.35) 0%, transparent 28%, rgba(8, 24, 34, 0.75) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(720px, calc(100% - 2rem));
  margin-left: clamp(1rem, 6vw, 5rem);
  animation: rise 0.9s var(--ease) both;
}

.hero-brand {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
}

.hero h1 {
  color: var(--white);
  margin-bottom: 1rem;
  text-wrap: balance;
}

.hero-lead {
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  max-width: 34rem;
  margin-bottom: 1.75rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

@keyframes hero-drift {
  from { transform: scale(1.04) translate3d(0, 0, 0); }
  to { transform: scale(1.08) translate3d(-1.5%, -1%, 0); }
}

@keyframes rise {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* About */
.about {
  background:
    linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.55) 20%, rgba(255, 255, 255, 0.7)),
    radial-gradient(ellipse at 50% 0%, rgba(79, 188, 196, 0.15), transparent 55%);
}

.about .narrow {
  margin-bottom: 2.5rem;
}

.about .narrow .lead {
  margin-inline: auto;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.about-card {
  padding: 1.5rem 1.4rem;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(79, 188, 196, 0.18);
  backdrop-filter: blur(8px);
  transition: transform 0.35s var(--ease), border-color 0.35s;
}

.about-card:hover {
  transform: translateY(-4px);
  border-color: rgba(79, 188, 196, 0.45);
}

.about-card h3 {
  color: var(--navy);
}

.about-card p {
  color: var(--muted);
  margin: 0;
  font-size: 0.98rem;
}

/* Benefits */
.benefits {
  background:
    linear-gradient(135deg, rgba(12, 36, 51, 0.02), transparent),
    var(--foam);
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem 1.25rem;
}

.benefit {
  padding: 0.25rem 0.25rem 0.5rem;
}

.benefit-icon {
  width: 3rem;
  height: 3rem;
  color: var(--teal-deep);
  margin-bottom: 0.85rem;
}

.benefit-icon svg {
  width: 100%;
  height: 100%;
}

.benefit h3 {
  color: var(--navy);
}

.benefit p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

/* Science accordion */
.science-list {
  display: grid;
  gap: 0.65rem;
}

.science-list details {
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  overflow: hidden;
  transition: border-color 0.25s;
}

.science-list details[open] {
  border-color: rgba(79, 188, 196, 0.45);
}

.science-list summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  padding: 1rem 1.15rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--navy);
}

.science-list summary::-webkit-details-marker {
  display: none;
}

.science-list summary span {
  flex: 0 0 auto;
  color: var(--teal-deep);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
}

.science-list details p {
  margin: 0;
  padding: 0 1.15rem 1.15rem 3.2rem;
  color: var(--muted);
  font-size: 0.96rem;
}

/* Ideal for */
.ideal {
  background:
    radial-gradient(circle at 15% 20%, rgba(79, 188, 196, 0.22), transparent 35%),
    radial-gradient(circle at 85% 70%, rgba(42, 154, 163, 0.18), transparent 40%),
    linear-gradient(160deg, var(--navy) 0%, var(--navy-mid) 100%);
  color: var(--white);
}

.ideal-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.ideal article {
  text-align: center;
  padding: 1.25rem 0.75rem;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: transform 0.35s var(--ease), background 0.35s;
}

.ideal article:hover {
  transform: translateY(-6px);
  background: rgba(79, 188, 196, 0.12);
}

.ideal-icon {
  width: 3.5rem;
  height: 3.5rem;
  margin: 0 auto 1rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--teal);
  color: var(--navy);
  font-size: 1.2rem;
  font-weight: 700;
}

.ideal h3 {
  color: var(--white);
  font-size: 1rem;
  margin-bottom: 0.4rem;
}

.ideal p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.9rem;
}

/* Solution */
.solution-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}

.solution-visual {
  position: relative;
  border-radius: calc(var(--radius) + 0.5rem);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.solution-visual::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 35%;
  background: linear-gradient(transparent, rgba(12, 36, 51, 0.25));
  pointer-events: none;
}

.solution-visual img {
  width: 100%;
  aspect-ratio: 1 / 1.05;
  object-fit: cover;
  object-position: center top;
}

.spec-list {
  margin: 1.25rem 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.spec-list li {
  position: relative;
  padding-left: 1.35rem;
  color: var(--muted);
  font-size: 0.98rem;
}

.spec-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--teal);
}

.spec-list strong {
  color: var(--navy);
}

.solution-note,
.solution-cta-line {
  color: var(--muted);
}

.solution-cta-line {
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--navy-mid);
  margin-bottom: 0;
}

/* Effects banner */
.effects-banner {
  padding: clamp(3rem, 6vw, 4.5rem) 0;
  background:
    linear-gradient(120deg, rgba(79, 188, 196, 0.16), rgba(42, 154, 163, 0.08)),
    url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%232a9aa3' fill-opacity='0.06'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  text-align: center;
}

.effects-banner h2 {
  color: var(--navy);
  margin-bottom: 1rem;
}

.effects-banner p {
  margin: 0 auto;
  max-width: 48rem;
  color: var(--muted);
}

/* Doctors */
.doctor-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.doctor {
  display: grid;
  gap: 1rem;
}

.doctor img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.doctor h3 {
  margin-bottom: 0.25rem;
}

.doctor .role {
  margin: 0 0 0.35rem;
  color: var(--teal-deep);
  font-weight: 600;
  font-size: 0.92rem;
}

.doctor p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

/* Contact */
.contact {
  background:
    radial-gradient(ellipse at 0% 100%, rgba(79, 188, 196, 0.2), transparent 45%),
    linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.65));
}

.contact-panel {
  text-align: center;
  max-width: 40rem;
}

.contact-panel .lead {
  margin-inline: auto;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* Footer */
.site-footer {
  background: var(--navy);
  color: rgba(255, 255, 255, 0.72);
  padding: 1.5rem 0;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--white);
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 600;
}

.footer-brand img {
  width: 3rem;
  filter: brightness(1.15);
}

.site-footer p {
  margin: 0;
  font-size: 0.88rem;
}

/* Reveal motion */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

/* Mobile */
@media (max-width: 900px) {
  .site-header.is-nav-open {
    background: rgba(247, 251, 252, 0.98);
    border-bottom-color: var(--line);
  }

  .nav-toggle {
    display: grid;
    place-items: center;
  }

  .nav-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 55;
    background: rgba(8, 24, 34, 0.45);
    backdrop-filter: blur(4px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s var(--ease);
  }

  .nav-backdrop.is-open {
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 60;
    width: min(20.5rem, calc(100vw - 3.25rem));
    padding: calc(var(--header-h) + 1.25rem) 1.35rem 1.75rem;
    flex-direction: column;
    align-items: stretch;
    gap: 0.2rem;
    background:
      radial-gradient(circle at 100% 0%, rgba(79, 188, 196, 0.16), transparent 45%),
      linear-gradient(180deg, #f7fbfc 0%, #eef6f7 100%);
    border-left: 1px solid rgba(79, 188, 196, 0.18);
    box-shadow: -24px 0 60px rgba(8, 24, 34, 0.18);
    transform: translateX(105%);
    opacity: 1;
    pointer-events: none;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    transition: transform 0.4s var(--ease);
  }

  .site-nav.is-open {
    transform: translateX(0);
    pointer-events: auto;
  }

  .site-nav a:not(.nav-cta) {
    display: flex;
    align-items: center;
    min-height: 3.1rem;
    padding: 0.85rem 0.85rem;
    border-radius: 0.9rem;
    border-bottom: 0;
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--navy);
    transition: background 0.2s, color 0.2s, transform 0.2s;
  }

  .site-nav a:not(.nav-cta):active {
    background: rgba(79, 188, 196, 0.14);
    color: var(--teal-deep);
  }

  .site-nav.is-open a {
    animation: nav-link-in 0.45s var(--ease) both;
  }

  .site-nav.is-open a:nth-child(1) { animation-delay: 0.04s; }
  .site-nav.is-open a:nth-child(2) { animation-delay: 0.08s; }
  .site-nav.is-open a:nth-child(3) { animation-delay: 0.12s; }
  .site-nav.is-open a:nth-child(4) { animation-delay: 0.16s; }
  .site-nav.is-open a:nth-child(5) { animation-delay: 0.2s; }
  .site-nav.is-open a:nth-child(6) { animation-delay: 0.24s; }

  .nav-cta {
    margin-top: 1rem;
    text-align: center;
    border-bottom: 0 !important;
    min-height: 3.1rem;
    display: grid;
    place-items: center;
    font-size: 1rem !important;
  }

  @keyframes nav-link-in {
    from {
      opacity: 0;
      transform: translateX(12px);
    }
    to {
      opacity: 1;
      transform: translateX(0);
    }
  }

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

  .hero-media img {
    object-position: 35% center;
  }

  .hero-veil {
    background:
      linear-gradient(180deg, rgba(8, 24, 34, 0.25) 0%, rgba(8, 24, 34, 0.2) 35%, rgba(8, 24, 34, 0.88) 100%);
  }

  .hero-content {
    margin-left: 1rem;
    margin-right: 1rem;
    width: auto;
  }

  .about-grid,
  .benefit-grid,
  .doctor-grid,
  .solution-grid {
    grid-template-columns: 1fr;
  }

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

  .ideal article:last-child {
    grid-column: 1 / -1;
  }

  .science-list details p {
    padding-left: 1.15rem;
  }

  .benefit-grid {
    gap: 1.75rem;
  }
}

@media (max-width: 560px) {
  .brand-text strong {
    font-size: 0.72rem;
  }

  .brand-text em {
    font-size: 1.15rem;
  }

  .hero-actions,
  .contact-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

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

  .ideal article:last-child {
    grid-column: auto;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-media img,
  .reveal,
  .hero-content,
  .site-nav.is-open a {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}