:root {
  --navy: #081333;
  --navy-deep: #050b1f;
  --navy-mid: #101a3a;
  --teal: #3ecfbf;
  --teal-hover: #5fe0d2;
  --teal-ink: #1a8f86;
  --white: #ffffff;
  --paper: #f3f6f8;
  --text: #1a2438;
  --muted: #5a6778;
  --line: rgba(8, 19, 51, 0.1);
  --header-h: 5rem;
  --radius: 1rem;
  --shadow: 0 18px 40px rgba(8, 19, 51, 0.12);
  --font: "Inter", system-ui, -apple-system, Segoe UI, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
}

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

a {
  color: inherit;
}

h1,
h2,
h3,
p,
ul,
dl {
  margin: 0;
}

h1,
h2,
h3 {
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-weight: 700;
}

h1 {
  font-size: clamp(2rem, 4.4vw, 3.4rem);
}

h2 {
  font-size: clamp(1.7rem, 3vw, 2.35rem);
}

h3 {
  font-size: 1.15rem;
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 100;
  background: var(--teal);
  color: var(--navy);
  padding: 0.6rem 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0.4rem;
}

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

.eyebrow {
  display: inline-block;
  color: var(--teal);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.85rem;
}

.eyebrow-dark {
  color: var(--teal-ink);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.75rem 1.35rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--teal);
  color: var(--navy);
  box-shadow: 0 8px 20px rgba(62, 207, 191, 0.22);
}

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

.btn-ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.28);
}

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

.btn-sm {
  min-height: 2.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.92rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: rgba(8, 19, 51, 0.94);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(62, 207, 191, 0.12);
}

.site-header.is-scrolled {
  box-shadow: 0 8px 24px rgba(5, 11, 31, 0.28);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo {
  height: 58px;
  width: auto;
  object-fit: contain;
  object-position: center;
}

.nav-toggle {
  display: none;
  width: 2.6rem;
  height: 2.6rem;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 0.6rem;
  background: transparent;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 1.15rem;
  height: 2px;
  margin: 0.22rem auto;
  background: var(--white);
  border-radius: 99px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(5.5px) rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-5.5px) rotate(-45deg);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-list {
  display: flex;
  gap: 1.35rem;
  list-style: none;
  padding: 0;
}

.nav-list a {
  color: rgba(255, 255, 255, 0.86);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--teal);
}

.hero {
  background:
    radial-gradient(circle at 80% 20%, rgba(62, 207, 191, 0.16), transparent 32%),
    linear-gradient(180deg, var(--navy) 0%, var(--navy-deep) 100%);
  color: var(--white);
  padding: 3.5rem 0 4.5rem;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3rem;
  align-items: center;
}

.lede {
  margin-top: 1rem;
  max-width: 36rem;
  color: rgba(255, 255, 255, 0.78);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.1rem;
  margin-top: 1.75rem;
  padding: 0;
  list-style: none;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.92rem;
}

.hero-facts li {
  position: relative;
  padding-left: 0.9rem;
}

.hero-facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--teal);
}

.hero-visual {
  position: relative;
  display: grid;
  place-items: center;
}

.hero-visual::before {
  content: "";
  position: absolute;
  width: 78%;
  height: 78%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(62, 207, 191, 0.18), transparent 70%);
  filter: blur(10px);
}

.hero-product {
  position: relative;
  width: min(100%, 480px);
  background: #ececec;
  border-radius: 1.25rem;
  box-shadow: 0 22px 48px rgba(0, 0, 0, 0.4);
  object-fit: contain;
}

.about {
  padding: 5.5rem 0;
  background: var(--white);
}

.about-inner {
  max-width: 44rem;
}

.about-copy {
  display: grid;
  gap: 1rem;
  margin-top: 1.15rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.products {
  padding: 1rem 0 5.5rem;
  background: var(--paper);
}

.section-head {
  max-width: 36rem;
  margin-bottom: 2rem;
}

.section-intro {
  margin-top: 0.7rem;
  color: var(--muted);
}

.product-card {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2.5rem;
  align-items: center;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 0.25rem);
  padding: 1.25rem 1.5rem 1.25rem 1.25rem;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.product-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 22px 44px rgba(8, 19, 51, 0.16);
}

.product-media {
  background: #ececec;
  border-radius: var(--radius);
  overflow: hidden;
}

.product-media img {
  width: 100%;
  object-fit: contain;
}

.product-kicker {
  color: var(--teal-ink);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.product-info h3 {
  margin: 0.35rem 0 0.7rem;
  font-size: clamp(1.4rem, 2.2vw, 1.85rem);
}

.product-info > p {
  color: var(--muted);
}

.spec-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem 1rem;
  margin: 1.4rem 0 1.6rem;
}

.spec-list div {
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: var(--paper);
}

.spec-list dt {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.spec-list dd {
  margin: 0.15rem 0 0;
  font-weight: 600;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 1.25rem;
}

.support-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.support-card:hover {
  transform: translateY(-3px);
  border-color: rgba(62, 207, 191, 0.45);
}

.support-card p {
  margin-top: 0.5rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.contact {
  padding: 5.5rem 0;
  background: var(--white);
}

.contact-inner {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 3rem;
  align-items: start;
}

.contact-copy p {
  margin-top: 0.85rem;
  color: var(--muted);
}

.contact-email {
  margin-top: 1.25rem !important;
}

.contact-email-btn {
  display: inline;
  margin: 0;
  padding: 0;
  border: 0;
  border-bottom: 2px solid var(--teal);
  border-radius: 0;
  background: none;
  color: var(--navy);
  font: inherit;
  font-weight: 600;
  font-size: 1.1rem;
  text-align: left;
  cursor: pointer;
}

.contact-email-btn:hover,
.contact-email-btn:focus-visible {
  color: var(--teal);
}

.contact-form {
  display: grid;
  gap: 1rem;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 0.15rem);
  background: var(--paper);
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field label {
  font-weight: 600;
  font-size: 0.92rem;
}

.field input,
.field textarea {
  width: 100%;
  border: 1px solid #d5dde6;
  border-radius: 0.7rem;
  padding: 0.8rem 0.9rem;
  font: inherit;
  color: var(--text);
  background: var(--white);
}

.field input:focus,
.field textarea:focus {
  outline: 2px solid var(--teal);
  outline-offset: 1px;
  border-color: var(--teal);
}

.field input.is-invalid,
.field textarea.is-invalid {
  border-color: #c23b3b;
}

.field-error {
  color: #b32626;
  font-size: 0.85rem;
}

.form-success {
  margin: 0;
  padding: 0.85rem 1rem;
  border-radius: 0.7rem;
  background: rgba(62, 207, 191, 0.16);
  color: var(--navy);
  font-weight: 600;
}

.site-footer {
  background: var(--navy);
  color: rgba(255, 255, 255, 0.78);
  padding: 3rem 0 2rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 2rem;
}

.footer-brand img {
  height: 72px;
  width: auto;
  object-fit: contain;
  margin-bottom: 0.75rem;
}

.footer-brand p,
.copyright {
  color: rgba(255, 255, 255, 0.64);
  font-size: 0.92rem;
}

.footer-nav {
  display: grid;
  gap: 0.45rem;
  align-content: start;
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
}

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

.social-label {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.65rem;
}

.social-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.social-list a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: rgba(255, 255, 255, 0.8);
}

.social-list a:hover {
  color: var(--teal);
}

.social-list svg {
  width: 1.15rem;
  height: 1.15rem;
}

.copyright {
  grid-column: 1 / -1;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

@media (max-width: 900px) {
  .hero-inner,
  .product-card,
  .contact-inner,
  .footer-inner,
  .support-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 2.5rem;
  }

  .hero-visual {
    order: -1;
  }

  .hero-product {
    width: min(100%, 320px);
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--navy);
    border-bottom: 1px solid rgba(62, 207, 191, 0.12);
    padding: 1rem 1.25rem 1.25rem;
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
  }

  .site-nav.is-open {
    display: flex;
  }

  .nav-list {
    flex-direction: column;
    gap: 0.85rem;
  }

  .header-cta {
    width: 100%;
  }
}

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

  .btn,
  .product-card,
  .support-card,
  .nav-toggle-bar {
    transition: none;
  }
}