:root {
  --bg: #06131a;
  --bg-soft: #0c202a;
  --panel: rgba(12, 32, 42, 0.82);
  --panel-strong: rgba(9, 24, 33, 0.96);
  --text: #ebf6fa;
  --muted: #9fc0cf;
  --line: rgba(159, 192, 207, 0.14);
  --sky: #20b8e4;
  --sky-deep: #0b8fb5;
  --glow: rgba(32, 184, 228, 0.28);
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Avenir Next", Helvetica, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(32, 184, 228, 0.18), transparent 32%),
    radial-gradient(circle at 85% 20%, rgba(14, 165, 233, 0.16), transparent 28%),
    linear-gradient(180deg, #08202b 0%, var(--bg) 45%, #041017 100%);
}

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

.page-shell {
  min-height: 100vh;
}

.hero {
  padding: 28px clamp(22px, 4vw, 52px) 40px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 42px;
}

.brand-logo {
  height: 42px;
  width: auto;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 34px;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(32, 184, 228, 0.14);
  color: #95e8ff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero-copy h1 {
  margin: 18px 0 16px;
  font-size: clamp(2.6rem, 6vw, 5rem);
  line-height: 0.96;
  letter-spacing: -0.04em;
  max-width: 12ch;
}

.hero-copy p {
  max-width: 58ch;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 14px;
  font-weight: 700;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  background: linear-gradient(135deg, var(--sky), #67d7f3);
  color: #05202a;
  box-shadow: 0 14px 36px var(--glow);
}

.button.secondary,
.button.ghost {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.stat-row {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.stat-row li {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
}

.stat-row strong {
  display: block;
  margin-bottom: 6px;
}

.stat-row span {
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-card {
  position: relative;
}

.app-preview {
  border: 1px solid rgba(32, 184, 228, 0.18);
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(7, 22, 31, 0.92), rgba(5, 15, 21, 0.98));
  box-shadow: var(--shadow);
  overflow: hidden;
}

.preview-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.preview-icon {
  height: 42px;
  width: 42px;
  border-radius: 12px;
}

.preview-header strong,
.preview-panel h3,
.preview-panel h4 {
  display: block;
}

.preview-header span,
.preview-panel p,
.preview-panel li {
  color: var(--muted);
}

.preview-body {
  padding: 20px;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.chip {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: #bfeaf6;
  font-size: 0.86rem;
}

.preview-panel {
  padding: 18px;
  border-radius: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
}

.preview-panel.accent {
  background: linear-gradient(180deg, rgba(32, 184, 228, 0.18), rgba(9, 24, 33, 0.92));
}

.preview-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 14px;
}

.preview-panel ul {
  margin: 10px 0 0;
  padding-left: 18px;
}

.feature-section,
.platform-section {
  padding: 20px clamp(22px, 4vw, 52px) 56px;
}

.section-heading {
  margin-bottom: 24px;
}

.section-heading h2 {
  margin: 14px 0 0;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.05;
  max-width: 14ch;
}

.feature-grid,
.platform-grid {
  display: grid;
  gap: 16px;
}

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

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

.feature-card,
.platform-card {
  padding: 22px;
  border-radius: 22px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.feature-card h3,
.platform-card h3 {
  margin-top: 0;
}

.feature-card p,
.platform-card p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.7;
}

@media (max-width: 980px) {
  .hero-grid,
  .feature-grid,
  .platform-grid,
  .preview-columns,
  .stat-row {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .topbar-actions {
    flex-wrap: wrap;
  }

  .hero-copy h1 {
    max-width: 100%;
  }
}