:root {
  --teal-950: #073b3e;
  --teal-800: #0a6268;
  --teal-600: #0a7f83;
  --aqua-300: #77d7cf;
  --mint-100: #e8fbf7;
  --gold-500: #d8a83f;
  --coral-500: #e2705b;
  --ink: #102326;
  --muted: #5b6f73;
  --line: #d9e7e5;
  --paper: #fbfefd;
  --white: #ffffff;
  --shadow: 0 18px 50px rgba(7, 59, 62, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.55;
}

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

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

.skip-link {
  left: 1rem;
  padding: .75rem 1rem;
  position: absolute;
  top: -4rem;
  z-index: 10;
  background: var(--teal-950);
  color: var(--white);
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(251, 254, 253, .92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.nav {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  font-weight: 800;
  color: var(--teal-950);
  letter-spacing: 0;
}

.brand img {
  width: clamp(150px, 20vw, 230px);
  height: 64px;
  object-fit: contain;
  object-position: left center;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  color: var(--muted);
  font-size: .95rem;
}

.nav-links a:hover {
  color: var(--teal-800);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: .85rem 1.2rem;
  border-radius: 8px;
  border: 1px solid var(--teal-600);
  background: var(--teal-600);
  color: var(--white);
  font-weight: 700;
  text-align: center;
  box-shadow: 0 12px 25px rgba(10, 127, 131, .22);
}

.btn:hover {
  background: var(--teal-800);
  border-color: var(--teal-800);
}

.btn-small {
  min-height: 40px;
  padding: .55rem .9rem;
  box-shadow: none;
}

.btn-ghost {
  background: transparent;
  color: var(--teal-800);
  box-shadow: none;
}

.btn-light {
  background: var(--white);
  color: var(--teal-800);
  border-color: var(--white);
  box-shadow: none;
  flex: 0 0 auto;
}

.hero {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  min-height: calc(100vh - 76px);
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(320px, .84fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
  padding: clamp(3rem, 7vw, 5.5rem) 0;
}

.eyebrow {
  margin: 0 0 .8rem;
  color: var(--teal-600);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 1.2rem;
  font-size: clamp(2.65rem, 6vw, 5.75rem);
  line-height: .96;
  letter-spacing: 0;
  color: var(--teal-950);
}

h2 {
  margin-bottom: .9rem;
  font-size: clamp(1.9rem, 4vw, 3rem);
  line-height: 1.08;
  letter-spacing: 0;
  color: var(--teal-950);
}

h3 {
  margin-bottom: .55rem;
  font-size: 1.1rem;
  color: var(--teal-950);
}

.lead {
  max-width: 650px;
  margin-bottom: 1.5rem;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.intro-video {
  width: min(100%, 640px);
  margin: 0 0 1.25rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--teal-950);
  box-shadow: 0 14px 32px rgba(7, 59, 62, .12);
  overflow: hidden;
}

.intro-video video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--teal-950);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  margin-bottom: 2rem;
}

.trust-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  max-width: 700px;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.trust-row div {
  padding: 1rem;
  background: var(--white);
}

.trust-row dt {
  color: var(--muted);
  font-size: .78rem;
}

.trust-row dd {
  margin: .15rem 0 0;
  font-weight: 800;
  color: var(--teal-950);
}

.hero-panel {
  min-height: 520px;
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(119, 215, 207, .35), transparent 42%),
    linear-gradient(330deg, rgba(216, 168, 63, .25), transparent 38%),
    var(--white);
  box-shadow: var(--shadow);
  display: grid;
  align-content: end;
  gap: 1rem;
}

.sound-card {
  min-height: 280px;
  padding: 1.25rem;
  border-radius: 8px;
  background: var(--teal-950);
  color: var(--white);
  display: grid;
  align-content: end;
  position: relative;
  overflow: hidden;
}

.sound-card::before,
.sound-card::after {
  content: "";
  position: absolute;
  border: 2px solid rgba(119, 215, 207, .55);
  border-radius: 50%;
  inset: 23% auto auto 15%;
  width: 170px;
  height: 170px;
}

.sound-card::after {
  inset: 10% auto auto 2%;
  width: 260px;
  height: 260px;
  border-color: rgba(216, 168, 63, .38);
}

.pulse {
  position: absolute;
  right: 2rem;
  top: 2rem;
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background: var(--aqua-300);
  box-shadow: 0 0 0 18px rgba(119, 215, 207, .18);
}

.sound-card p {
  position: relative;
  max-width: 330px;
  margin: 0;
  font-size: 1.15rem;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .8rem;
}

.mini-grid span {
  min-height: 72px;
  padding: 1rem;
  border-radius: 8px;
  background: var(--mint-100);
  color: var(--teal-950);
  font-weight: 700;
  display: flex;
  align-items: center;
}

.section {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: clamp(3.5rem, 7vw, 6rem) 0;
}

.intro {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 2rem;
  border-top: 1px solid var(--line);
}

.symptom-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.symptom-list p {
  min-height: 96px;
  margin: 0;
  padding: 1.2rem;
  border-left: 4px solid var(--gold-500);
  background: var(--white);
  border-radius: 0 8px 8px 0;
  box-shadow: 0 10px 24px rgba(7, 59, 62, .07);
}

.cities {
  border-top: 1px solid var(--line);
}

.city-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.city-grid article {
  min-height: 128px;
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 10px 24px rgba(7, 59, 62, .06);
}

.city-grid h3 {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  min-height: 36px;
  margin-bottom: .8rem;
  border-radius: 8px;
  background: var(--mint-100);
  color: var(--teal-800);
}

.city-grid p {
  margin-bottom: 0;
  color: var(--muted);
  font-weight: 700;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 2rem;
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
  font-size: 1.08rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  padding: 1.4rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.card p {
  margin-bottom: 0;
  color: var(--muted);
}

.band {
  width: min(1120px, calc(100% - 32px));
  margin: 1rem auto;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border-radius: 8px;
  background: var(--teal-800);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.band .eyebrow,
.band h2,
.band p {
  color: var(--white);
}

.band h2 {
  max-width: 760px;
}

.band p {
  max-width: 720px;
  margin-bottom: 0;
  opacity: .88;
}

.lead-section {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 2rem;
  align-items: start;
}

.lead-section > div > p:not(.eyebrow) {
  color: var(--muted);
}

.lead-form {
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 10px 24px rgba(7, 59, 62, .07);
  display: grid;
  gap: 1rem;
}

.lead-form label {
  display: grid;
  gap: .4rem;
  color: var(--teal-950);
  font-weight: 800;
}

.lead-form input,
.lead-form select {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: .75rem .9rem;
  color: var(--ink);
  background: var(--paper);
  font: inherit;
}

.lead-form input:focus,
.lead-form select:focus {
  outline: 3px solid rgba(119, 215, 207, .38);
  border-color: var(--teal-600);
}

.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.steps li {
  padding: 1.2rem;
  border-top: 3px solid var(--aqua-300);
  background: var(--white);
  border-radius: 0 0 8px 8px;
}

.steps span {
  display: block;
  margin-bottom: 1rem;
  color: var(--coral-500);
  font-weight: 800;
}

.steps p {
  margin-bottom: 0;
  color: var(--muted);
}

.faq {
  max-width: 880px;
}

details {
  border-top: 1px solid var(--line);
  padding: 1.1rem 0;
}

details:last-child {
  border-bottom: 1px solid var(--line);
}

summary {
  cursor: pointer;
  font-weight: 800;
  color: var(--teal-950);
}

details p {
  margin: .8rem 0 0;
  color: var(--muted);
}

.footer {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  color: var(--muted);
}

.footer strong {
  color: var(--teal-950);
}

.footer p {
  margin: .35rem 0 0;
}

.footer div:last-child {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer a {
  color: var(--teal-800);
  font-weight: 700;
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
  }

  .hero,
  .intro,
  .lead-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-panel {
    min-height: 420px;
  }

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

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

@media (max-width: 620px) {
  .nav {
    min-height: 68px;
  }

  .brand img {
    width: 138px;
    height: 48px;
  }

  h1 {
    font-size: clamp(2.35rem, 16vw, 3.6rem);
  }

  .hero-actions,
  .footer,
  .footer div:last-child {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .btn-small {
    width: auto;
  }

  .trust-row,
  .symptom-list,
  .cards,
  .city-grid,
  .steps,
  .mini-grid {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    min-height: auto;
  }

  .sound-card {
    min-height: 250px;
  }
}