:root {
  color-scheme: dark;
  --background: #0b1117;
  --surface: #121b24;
  --surface-raised: #17232d;
  --border: #2a3945;
  --text: #f3f6f8;
  --muted: #a9b6c1;
  --accent: #16c4d2;
  --accent-deep: #0876cd;
  --focus: #7be8ef;
  --shell: 72rem;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--background);
  scroll-behavior: smooth;
}

body {
  min-width: 18rem;
  margin: 0;
  background:
    radial-gradient(circle at 84% 11%, rgb(22 196 210 / 10%), transparent 28rem),
    radial-gradient(circle at 14% 42%, rgb(8 118 205 / 8%), transparent 30rem),
    var(--background);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-underline-offset: 0.22em;
  text-decoration-thickness: 0.08em;
}

a:hover {
  color: var(--focus);
}

a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
  border-radius: 0.2rem;
}

.skip-link {
  position: fixed;
  z-index: 10;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.9rem;
  transform: translateY(-160%);
  border-radius: 0.4rem;
  background: var(--text);
  color: var(--background);
  font-weight: 700;
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: min(calc(100% - 3rem), var(--shell));
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid rgb(255 255 255 / 8%);
}

.header-inner {
  display: flex;
  min-height: 6rem;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--text);
  text-decoration: none;
}

.brand img {
  width: 3rem;
  border-radius: 0.75rem;
}

.brand-name {
  font-size: 1.35rem;
  font-weight: 780;
  letter-spacing: -0.025em;
}

.header-note,
.section-label,
.eyebrow {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero {
  display: grid;
  min-height: 43rem;
  padding-block: clamp(4.5rem, 10vw, 8.5rem);
  align-items: center;
  grid-template-columns: minmax(0, 1.28fr) minmax(18rem, 0.72fr);
  gap: clamp(3rem, 8vw, 7rem);
}

.eyebrow {
  display: inline-flex;
  padding: 0.5rem 0.8rem;
  border: 1px solid rgb(22 196 210 / 35%);
  border-radius: 999px;
  background: rgb(22 196 210 / 8%);
  color: #8ce9ef;
}

h1,
h2,
p {
  overflow-wrap: break-word;
}

h1 {
  max-width: 13ch;
  margin: 1.5rem 0 1.4rem;
  font-size: clamp(2.9rem, 7.1vw, 6.2rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.intro {
  max-width: 41rem;
  margin: 0;
  color: #c7d1d9;
  font-size: clamp(1.12rem, 2vw, 1.35rem);
  line-height: 1.65;
}

.release-note {
  max-width: 39rem;
  margin: 1.3rem 0 0;
  color: var(--muted);
}

.product-card {
  position: relative;
  padding: clamp(1.6rem, 4vw, 2.4rem);
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 1.5rem;
  background: linear-gradient(145deg, rgb(23 35 45 / 96%), rgb(14 23 31 / 96%));
  box-shadow: 0 2rem 5rem rgb(0 0 0 / 24%);
}

.product-card::before {
  position: absolute;
  width: 11rem;
  height: 11rem;
  border-radius: 50%;
  background: rgb(22 196 210 / 9%);
  content: "";
  filter: blur(1.5rem);
  inset: -5rem -4rem auto auto;
}

.balance-mark {
  position: relative;
  width: 5.5rem;
  height: 5.5rem;
  margin-bottom: 2rem;
  border: 3px solid var(--accent);
  border-right-color: transparent;
  border-left-color: transparent;
  border-radius: 50%;
}

.balance-mark::before,
.balance-mark span {
  position: absolute;
  top: 50%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-deep));
  content: "";
  transform: translateY(-50%);
}

.balance-mark::before {
  right: 0.4rem;
  left: 0.4rem;
}

.balance-mark span {
  left: 50%;
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.product-card h2 {
  position: relative;
  margin: 0 0 1.5rem;
  font-size: 1.45rem;
  line-height: 1.3;
}

.feature-list,
.footer-links {
  padding: 0;
  margin: 0;
  list-style: none;
}

.feature-list li {
  display: grid;
  padding-block: 1rem;
  border-top: 1px solid var(--border);
  align-items: baseline;
  color: #dbe3e8;
  grid-template-columns: 2.4rem 1fr;
  gap: 0.8rem;
}

.feature-number {
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.positioning {
  border-block: 1px solid rgb(255 255 255 / 8%);
  background: rgb(18 27 36 / 72%);
}

.positioning-inner {
  display: grid;
  padding-block: clamp(4rem, 8vw, 7rem);
  align-items: start;
  grid-template-columns: 0.5fr 1.25fr 0.9fr;
  gap: clamp(2rem, 6vw, 5rem);
}

.positioning h2 {
  margin: 0;
  font-size: clamp(1.9rem, 4vw, 3.3rem);
  line-height: 1.14;
  letter-spacing: -0.035em;
}

.positioning p:last-child {
  margin: 0;
  color: var(--muted);
}

.site-footer {
  padding-block: 4rem 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr 0.8fr;
  gap: 3rem;
}

.footer-grid h2 {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.footer-grid p,
.footer-grid address {
  margin: 0 0 0.8rem;
  color: #c7d1d9;
  font-style: normal;
}

.footer-links li + li {
  margin-top: 0.65rem;
}

.footer-links a {
  color: #c7d1d9;
}

.footer-bottom {
  display: flex;
  padding-top: 2rem;
  margin-top: 3rem;
  border-top: 1px solid var(--border);
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.footer-bottom p {
  margin: 0;
}

.legal-main {
  min-height: 60vh;
  padding-block: clamp(4rem, 9vw, 7rem);
}

.legal-card {
  max-width: 48rem;
  padding: clamp(1.6rem, 5vw, 3.5rem);
  border: 1px solid var(--border);
  border-radius: 1.5rem;
  background: rgb(18 27 36 / 92%);
}

.legal-card h1 {
  max-width: none;
  margin: 0.8rem 0 1.4rem;
  font-size: clamp(2.2rem, 6vw, 4.4rem);
}

.draft-notice {
  padding: 1rem 1.1rem;
  margin-block: 1.5rem;
  border-left: 3px solid var(--accent);
  background: rgb(22 196 210 / 8%);
  color: #d7f5f7;
}

.legal-contact {
  padding-top: 1.5rem;
  margin-top: 2rem;
  border-top: 1px solid var(--border);
}

.back-link {
  display: inline-flex;
  margin-top: 1.5rem;
  font-weight: 700;
}

@media (max-width: 52rem) {
  .hero,
  .positioning-inner,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-block: 4.5rem;
    gap: 3.5rem;
  }

  .positioning-inner,
  .footer-grid {
    gap: 2rem;
  }
}

@media (max-width: 36rem) {
  .shell {
    width: min(calc(100% - 2rem), var(--shell));
  }

  .header-inner {
    min-height: 5rem;
  }

  .header-note {
    display: none;
  }

  h1 {
    font-size: clamp(2.65rem, 14vw, 4rem);
  }

  .footer-bottom {
    flex-direction: column;
  }
}

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