:root {
  --night: #050b18;
  --panel: #0a1429;
  --panel-soft: #101d35;
  --ink: #f4f7ff;
  --body: #b8c7e5;
  --muted: #7f91b6;
  --cyan: #3de8ff;
  --blue: #6d8cff;
  --line: rgba(130, 164, 225, 0.2);
  --sans: Inter, -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", sans-serif;
  --display: "Space Grotesk", var(--sans);
}

* { box-sizing: border-box; }
html { background: var(--night); scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--body);
  background:
    radial-gradient(900px 540px at 72% 4%, rgba(61, 232, 255, 0.1), transparent 62%),
    radial-gradient(700px 520px at 10% 34%, rgba(109, 140, 255, 0.08), transparent 68%),
    var(--night);
  font-family: var(--sans);
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--cyan); text-underline-offset: 0.22em; }
a:focus-visible { outline: 3px solid var(--cyan); outline-offset: 4px; border-radius: 4px; }
img { max-width: 100%; }

.site-header,
.site-footer,
.page,
.product-main {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
}

.studio-link,
.site-nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--ink);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav { display: flex; align-items: center; gap: 1.15rem; }
.site-nav a { color: var(--muted); }
.site-nav a:hover,
.site-nav a[aria-current="page"] { color: var(--ink); }

h1, h2, h3 { color: var(--ink); font-family: var(--display); letter-spacing: -0.035em; line-height: 1.05; }
h1 { margin: 0 0 1.25rem; font-size: clamp(3.5rem, 8vw, 7rem); }
h2 { margin: 0 0 1rem; font-size: clamp(2rem, 4.5vw, 3.7rem); }
h3 { margin: 0 0 0.65rem; font-size: 1.3rem; }
p { margin: 0 0 1rem; }

.eyebrow {
  margin: 0 0 1rem;
  color: var(--cyan);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero {
  min-height: 680px;
  padding: clamp(4rem, 10vw, 8rem) 0;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.65fr);
  align-items: center;
  gap: clamp(2.5rem, 8vw, 7rem);
}

.hero h1 span { color: var(--cyan); }
.lede { max-width: 38rem; font-size: clamp(1.1rem, 2vw, 1.35rem); }
.button-row { margin-top: 2rem; display: flex; align-items: center; flex-wrap: wrap; gap: 1rem; }
.button {
  min-height: 50px;
  padding: 0.85rem 1.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--cyan);
  border-radius: 999px;
  color: #04101c;
  background: var(--cyan);
  font-weight: 850;
  text-decoration: none;
}
.button.secondary { color: var(--ink); background: transparent; }

.hero-mark {
  position: relative;
  min-height: 390px;
  display: grid;
  place-items: center;
}
.hero-mark::before,
.hero-mark::after {
  content: "";
  position: absolute;
  border-radius: 50%;
}
.hero-mark::before {
  width: 360px;
  height: 360px;
  border: 1px solid rgba(61, 232, 255, 0.22);
  box-shadow: inset 0 0 90px rgba(61, 232, 255, 0.06), 0 0 80px rgba(61, 232, 255, 0.08);
}
.hero-mark::after {
  width: 250px;
  height: 250px;
  border: 1px dashed rgba(109, 140, 255, 0.28);
}
.app-icon {
  position: relative;
  z-index: 1;
  width: 176px;
  height: auto;
  border-radius: 25%;
  box-shadow: 0 35px 90px rgba(0, 0, 0, 0.68), 0 0 60px rgba(61, 232, 255, 0.22);
}

.feature-section,
.pro-section,
.principles,
.closing {
  padding: clamp(4.5rem, 9vw, 8rem) 0;
  border-top: 1px solid var(--line);
}
.section-copy { max-width: 710px; margin-bottom: 2.5rem; }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.card {
  min-height: 210px;
  padding: 1.6rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(145deg, rgba(16, 29, 53, 0.78), rgba(7, 15, 31, 0.82));
}
.card p { color: var(--muted); }

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(300px, 1fr);
  gap: clamp(2rem, 7vw, 6rem);
  align-items: start;
}
.feature-list { margin: 0; padding: 0; list-style: none; }
.feature-list li { padding: 1rem 0; border-bottom: 1px solid var(--line); color: var(--ink); }
.price-box {
  margin-top: 2rem;
  padding: 1.3rem;
  border-left: 3px solid var(--cyan);
  background: rgba(61, 232, 255, 0.06);
}
.price-box strong { color: var(--ink); }
.fine-print { color: var(--muted); font-size: 0.9rem; }

.principles { text-align: center; }
.principles p { max-width: 700px; margin-inline: auto; font-size: 1.15rem; }
.closing { text-align: center; }
.closing h2 { max-width: 12ch; margin-inline: auto; }

.page { max-width: 780px; padding: clamp(3.5rem, 8vw, 6rem) 0; }
.page h1 { font-size: clamp(2.8rem, 7vw, 5.3rem); }
.page h2 { margin-top: 2.5rem; font-size: clamp(1.5rem, 3.5vw, 2rem); }
.meta { color: var(--muted); }
.notice {
  margin: 2rem 0;
  padding: 1.25rem 1.4rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(16, 29, 53, 0.7);
}

.site-footer {
  padding: 2rem 0 3rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}
.site-footer p { margin: 0; }

@media (max-width: 760px) {
  .site-header { padding: 0.75rem 0; align-items: flex-start; flex-direction: column; }
  .site-nav { width: 100%; gap: 0.85rem; overflow-x: auto; }
  .hero { min-height: 0; grid-template-columns: 1fr; }
  .hero-mark { min-height: 330px; grid-row: 1; }
  .hero-mark::before { width: 300px; height: 300px; }
  .hero-mark::after { width: 205px; height: 205px; }
  .hero-copy { grid-row: 2; }
  .card-grid,
  .split { grid-template-columns: 1fr; }
  .site-footer { flex-direction: column; }
}

@media (max-width: 430px) {
  h1 { font-size: 3rem; }
  .hero-mark::before { width: 280px; height: 280px; }
  .hero-mark::after { width: 190px; height: 190px; }
}

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