:root {
  color-scheme: dark;
  --navy-950: #050a14;
  --navy-900: #0a1322;
  --text: #e8eef6;
  --soft: #d4dee9;
  --muted: #a9b8cb;
  --cyan: #8fdbe3;
  --cyan-bright: #c9f4f7;
  --cyan-deep: #1a6b74;
  --line: rgba(143, 219, 227, 0.28);
  --focus: #f2fdff;
  --max: 1120px;
  --font: "Segoe UI", "Helvetica Neue", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--font);
  font-size: 1.125rem;
  line-height: 1.55;
  background:
    radial-gradient(90% 55% at 85% -10%, rgba(143, 219, 227, 0.12), transparent 52%),
    radial-gradient(70% 45% at 0% 100%, rgba(26, 107, 116, 0.16), transparent 55%),
    linear-gradient(180deg, var(--navy-900) 0%, var(--navy-950) 52%, #060c16 100%);
}

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

a {
  color: var(--cyan-bright);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: #ffffff;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3.5rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  background: var(--cyan);
  color: #041018;
  font-weight: 700;
  text-decoration: none;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(14px);
  background: rgba(7, 13, 24, 0.82);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.25rem;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text);
}

.brand-link img.brand-mark {
  width: 42px;
  height: 39px;
  object-fit: contain;
}

.brand-link img.brand-word {
  width: min(148px, 34vw);
  height: auto;
}

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: transparent;
  color: var(--cyan-bright);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 1.15rem;
  height: 2px;
  margin: 0.28rem auto;
  background: currentColor;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.35rem;
}

.site-nav a {
  color: var(--soft);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.05rem;
}

.site-nav a[aria-current="page"] {
  color: var(--cyan-bright);
}

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

.hero {
  position: relative;
  overflow: hidden;
  min-height: min(68vh, 640px);
  display: grid;
  align-items: center;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.88;
  background:
    radial-gradient(55% 50% at 72% 42%, rgba(143, 219, 227, 0.12), transparent 68%),
    linear-gradient(90deg, rgba(5, 10, 20, 0.45) 0%, rgba(5, 10, 20, 0.16) 36%, transparent 58%),
    url("../brand/ceryvex_logo_icon_master_transparent.png") right 8% center / min(46vw, 480px) auto no-repeat;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  width: min(100% - 2rem, var(--max));
  margin: 0 auto;
  padding: 3.25rem 0 3rem;
  max-width: 38rem;
}

.product-label {
  margin: 0 0 1rem;
  color: var(--cyan);
  font-size: clamp(1.15rem, 2vw, 1.35rem);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.hero h1 {
  margin: 0;
  font-family: var(--font);
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: #f4fbff;
}

.hero h1 span {
  display: block;
  margin-top: 0.3rem;
  color: var(--cyan);
}

.hero .lede {
  margin: 1rem 0 0;
  max-width: 34rem;
  color: var(--soft);
  font-size: clamp(1.1rem, 1.8vw, 1.25rem);
  line-height: 1.5;
}

.cta-row {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: center;
}

.coming-soon {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.3rem;
  padding: 0.9rem 1.2rem;
  border-radius: 12px;
  border: 2px solid rgba(143, 219, 227, 0.55);
  background: linear-gradient(180deg, rgba(26, 107, 116, 0.55), rgba(20, 80, 88, 0.35));
  color: #ffffff;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.25;
}

.coming-soon small {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--cyan-bright);
}

.section {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto;
  padding: 2.75rem 0 3.25rem;
}

.section h2 {
  margin: 0 0 0.6rem;
  font-family: var(--font);
  font-size: clamp(1.55rem, 2.6vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--cyan-bright);
}

.section > p.intro {
  margin: 0 0 1.25rem;
  max-width: 40rem;
  color: var(--soft);
}

.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.feature-list li {
  padding: 0;
  border: 0;
  background: transparent;
}

.feature-list h3 {
  margin: 0 0 0.25rem;
  font-family: var(--font);
  font-size: 1.22rem;
  font-weight: 700;
  color: #ffffff;
}

.feature-list p {
  margin: 0;
  color: var(--soft);
  max-width: 42rem;
}

.note {
  margin-top: 1.35rem;
  max-width: 42rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.page-hero {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto;
  padding: 2.5rem 0 1rem;
}

.page-hero h1 {
  margin: 0;
  font-family: var(--font);
  font-size: clamp(1.9rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.page-hero .product-label {
  margin-bottom: 0.55rem;
}

.page-hero p {
  margin: 0.7rem 0 0;
  max-width: 40rem;
  color: var(--soft);
}

.prose {
  width: min(100% - 2rem, 46rem);
  margin: 0 auto;
  padding: 0.5rem 0 3.25rem;
  font-family: var(--font);
}

.prose h2 {
  margin: 1.85rem 0 0.6rem;
  font-family: var(--font);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--cyan-bright);
}

.prose h2:first-child {
  margin-top: 0.35rem;
}

.prose p,
.prose li {
  color: var(--soft);
}

.prose ul,
.prose ol {
  padding-left: 1.25rem;
}

.prose li + li {
  margin-top: 0.4rem;
}

.prose strong {
  color: #ffffff;
  font-weight: 700;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: rgba(5, 10, 20, 0.72);
}

.footer-inner {
  width: min(100% - 2rem, var(--max));
  margin: 0 auto;
  padding: 1.6rem 0 2rem;
  display: grid;
  gap: 0.9rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.footer-brand img {
  width: 36px;
  height: 33px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.35rem;
}

.footer-links a {
  color: var(--soft);
  text-decoration: none;
  font-weight: 600;
}

.footer-links a:hover {
  color: var(--cyan);
}

.footer-meta {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
}

@media (max-width: 760px) {
  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    display: none;
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: calc(100% + 0.35rem);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: rgba(10, 19, 34, 0.98);
  }

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

  .site-nav a {
    padding: 0.9rem 0.85rem;
  }

  .hero {
    min-height: 0;
  }

  .hero::before {
    background-image:
      url("../brand/ceryvex_logo_icon_master_transparent.png");
    background-position: center top 8%;
    background-size: min(70vw, 300px) auto;
    background-repeat: no-repeat;
    opacity: 0.88;
  }

  .hero-inner {
    padding-top: 5.5rem;
    padding-bottom: 2.25rem;
    max-width: none;
  }

  .section {
    padding: 2.25rem 0 2.75rem;
  }
}

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