:root {
  --ink: #e8eefc;
  --muted: #a0acc9;
  --panel: rgba(13, 18, 40, 0.84);
  --line: rgba(150, 170, 218, 0.14);
  --cyan: #6eeeff;
  --cyan-strong: #1fd6ff;
  --navy: #0b1127;
  --white: #ffffff;
  --shadow: 0 28px 68px rgba(2, 6, 18, 0.42);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(110, 238, 255, 0.12), transparent 22%),
    radial-gradient(circle at top left, rgba(63, 117, 255, 0.08), transparent 24%),
    linear-gradient(180deg, #070b16 0%, #0e1530 100%);
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
}

.page-shell {
  width: min(1240px, calc(100vw - 32px));
  margin: 20px auto 34px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 12px 0 24px;
}

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

.brand-mark {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand strong,
h1, h2, h3 {
  font-family: "Sora", "Segoe UI", sans-serif;
}

.brand strong {
  display: block;
  font-size: 18px;
}

.brand span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-top: 3px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.nav a,
.btn,
.footer-links a {
  text-decoration: none;
}

.nav a {
  color: var(--ink);
  font-weight: 600;
}

.hero {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 28px;
  align-items: start;
}

.hero-copy,
.hero-visual,
.feature-card,
.io-card,
.extra-card,
.scenario {
  border-radius: 28px;
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 38px;
}

.kicker {
  margin: 0 0 12px;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 12px;
  font-weight: 700;
}

h1 {
  margin: 0 0 18px;
  font-size: clamp(38px, 5vw, 62px);
  line-height: 1.03;
}

.lede {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.78;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 18px;
  border-radius: 999px;
  font-weight: 700;
}

.btn.solid {
  color: #031520;
  background: linear-gradient(135deg, var(--cyan), var(--cyan-strong));
}

.btn.ghost {
  color: var(--ink);
  border: 1px solid rgba(180, 194, 232, 0.16);
  background: rgba(255, 255, 255, 0.04);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.hero-tags span {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(180, 194, 232, 0.12);
  color: var(--ink);
  font-weight: 600;
  font-size: 14px;
}

.hero-visual {
  padding: 28px;
  background:
    radial-gradient(circle at top left, rgba(110, 238, 255, 0.12), transparent 30%),
    linear-gradient(160deg, rgba(14, 19, 40, 0.98) 0%, rgba(6, 10, 22, 0.98) 100%);
}

.panel-stage {
  border-radius: 24px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(180, 194, 232, 0.08);
}

.product-shot {
  display: block;
  width: min(100%, 430px);
  margin: 0 auto;
}

.hero-specs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.hero-spec {
  border-radius: 18px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(180, 194, 232, 0.08);
}

.hero-spec small {
  display: block;
  margin-bottom: 8px;
  color: rgba(232, 238, 252, 0.68);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-spec strong {
  display: block;
  font-size: 17px;
  line-height: 1.42;
}

.section {
  padding: 58px 0;
}

.section-heading {
  display: grid;
  gap: 14px;
  margin-bottom: 28px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.14;
}

.feature-grid,
.io-grid,
.extra-grid,
.scenario-grid {
  display: grid;
  gap: 18px;
}

.feature-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.io-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.extra-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.scenario-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card,
.io-card,
.extra-card,
.scenario {
  padding: 24px;
}

.feature-card h3,
.io-card h3,
.extra-card h3,
.scenario h3 {
  margin: 0 0 12px;
  font-size: 22px;
}

.feature-card p,
.extra-card p,
.scenario p {
  margin: 0;
  color: var(--muted);
  line-height: 1.74;
}

.io-card.highlight {
  background: linear-gradient(160deg, rgba(20, 34, 72, 0.95), rgba(8, 16, 34, 0.98));
}

.io-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  padding: 18px 0 0;
}

.footer strong {
  font-family: "Sora", "Segoe UI", sans-serif;
}

.footer p {
  margin: 8px 0 0;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.footer-links a {
  color: var(--cyan);
  font-weight: 700;
}

@media (max-width: 1080px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .extra-grid,
  .scenario-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .page-shell {
    width: min(100vw - 20px, 100%);
  }

  .topbar,
  .footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-copy {
    padding: 26px;
  }

  .hero-specs,
  .feature-grid,
  .io-grid,
  .extra-grid,
  .scenario-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    padding: 20px;
  }
}