@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@600;700&display=swap");

:root {
  color-scheme: dark;
  --bg: #050505;
  --bg-soft: #101114;
  --panel: rgba(255, 255, 255, 0.075);
  --panel-strong: rgba(255, 255, 255, 0.115);
  --text: #f7f8fb;
  --muted: #b8bec9;
  --line: rgba(255, 255, 255, 0.14);
  --accent: #7ddcff;
  --accent-soft: rgba(125, 220, 255, 0.16);
  --accent-strong: #b8a7ff;
  --signal: #82b6ff;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 16px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 12%, rgba(125, 220, 255, 0.16), transparent 28rem),
    radial-gradient(circle at 82% 8%, rgba(184, 167, 255, 0.14), transparent 24rem),
    linear-gradient(145deg, var(--bg) 0%, #101115 48%, var(--bg) 100%);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  content: "";
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 78%);
}

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

.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0;
  animation: slide-in 700ms ease both;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border: 1px solid rgba(125, 220, 255, 0.45);
  border-radius: 18px;
  color: var(--text);
  background:
    linear-gradient(var(--bg-soft), var(--bg-soft)) padding-box,
    linear-gradient(135deg, rgba(255, 255, 255, 0.9), var(--accent) 48%, var(--accent-strong)) border-box;
  box-shadow: 0 16px 36px rgba(125, 220, 255, 0.16);
  font-weight: 800;
  letter-spacing: -0.06em;
}

.brand-copy {
  display: grid;
  gap: 2px;
  font-weight: 800;
}

.brand-copy small {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.055);
  backdrop-filter: blur(18px);
}

.site-nav a {
  padding: 10px 16px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
  transition: color 180ms ease, background 180ms ease;
}

.site-nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.09);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 28px;
  align-items: stretch;
  padding: 96px 0 42px;
}

.hero-content,
.hero-panel,
.notice,
.demo-card {
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.105), rgba(255, 255, 255, 0.045));
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
}

.hero-content {
  position: relative;
  overflow: hidden;
  padding: clamp(32px, 6vw, 72px);
  border-radius: var(--radius-xl);
  animation: rise-in 800ms 120ms ease both;
}

.hero-content::after {
  position: absolute;
  right: -110px;
  bottom: -120px;
  width: 320px;
  height: 320px;
  content: "";
  border-radius: 50%;
  background: radial-gradient(circle, rgba(125, 220, 255, 0.18), transparent 68%);
}

.eyebrow,
.panel-kicker,
.demo-type,
.demo-status {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1,
h2,
h3,
h4,
.brand-copy {
  font-family: "Space Grotesk", "Inter", system-ui, sans-serif;
}

h1 {
  max-width: 820px;
  margin-bottom: 24px;
  font-size: clamp(3rem, 8vw, 7.4rem);
  line-height: 0.88;
  letter-spacing: -0.08em;
}

.hero-text {
  max-width: 720px;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.32rem);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 800;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary,
.button-card {
  color: #050505;
  background: linear-gradient(135deg, #ffffff, #dceeff 48%, var(--accent));
  box-shadow: 0 18px 42px rgba(125, 220, 255, 0.16);
}

.button-primary:hover,
.button-card:hover {
  box-shadow: 0 22px 56px rgba(125, 220, 255, 0.26);
}

.button-secondary {
  color: var(--text);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.06);
}

.hero-panel {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 360px;
  padding: 30px;
  border-radius: var(--radius-xl);
  animation: rise-in 800ms 220ms ease both;
}

.hero-panel strong {
  margin: 18px 0 12px;
  font-size: 2.4rem;
  line-height: 1;
  letter-spacing: -0.06em;
}

.hero-panel p,
.notice p,
.section-heading p,
.demo-card p,
li {
  color: var(--muted);
  line-height: 1.65;
}

.notice {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  margin: 18px 0 90px;
  padding: 22px 24px;
  border-radius: var(--radius-lg);
  animation: rise-in 800ms 280ms ease both;
}

.notice span {
  display: inline-flex;
  padding: 7px 11px;
  border-radius: 999px;
  color: var(--accent);
  background: var(--accent-soft);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
}

.notice p {
  margin-bottom: 0;
}

.demo-section {
  padding: 0 0 72px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 32px;
}

.section-heading h2 {
  margin-bottom: 16px;
  font-size: clamp(2.2rem, 5vw, 4.6rem);
  line-height: 0.95;
  letter-spacing: -0.07em;
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.demo-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: clamp(24px, 4vw, 34px);
  border-radius: var(--radius-xl);
  animation: card-in 720ms ease both;
  transition: transform 220ms ease, border-color 220ms ease, background 220ms ease, box-shadow 220ms ease;
}

.demo-card:nth-child(2) {
  animation-delay: 120ms;
}

.demo-card:hover {
  transform: translateY(-8px);
  border-color: rgba(125, 220, 255, 0.42);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.06));
  box-shadow: 0 32px 90px rgba(0, 0, 0, 0.46);
}

.card-topline {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 24px;
}

.demo-status {
  color: var(--signal);
}

.demo-card h3 {
  margin-bottom: 16px;
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  letter-spacing: -0.05em;
}

.card-detail {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.card-detail h4 {
  margin-bottom: 10px;
  color: var(--text);
  font-size: 1rem;
}

.card-detail ul,
.card-detail ol {
  padding-left: 20px;
  margin: 0;
}

.button-card {
  width: 100%;
  margin-top: auto;
  transform: translateY(20px);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px 0 44px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.site-footer p {
  max-width: 720px;
  margin-bottom: 0;
}

.site-footer a {
  color: var(--accent);
  font-weight: 800;
}

@keyframes slide-in {
  from {
    opacity: 0;
    transform: translateY(-14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(26px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes card-in {
  from {
    opacity: 0;
    transform: translateY(32px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .hero,
  .demo-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 54px;
  }

  .hero-panel {
    min-height: 220px;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100% - 22px, 1180px);
  }

  .site-header,
  .site-footer,
  .notice {
    flex-direction: column;
  }

  .site-header {
    align-items: flex-start;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
  }

  .site-nav a {
    flex: 1;
    text-align: center;
  }

  .hero-content,
  .hero-panel,
  .demo-card {
    border-radius: 24px;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}