* {
  box-sizing: border-box;
}

html {
  color-scheme: light dark;
}

body {
  --bg: #f3f7ff;
  --surface: rgba(255, 255, 255, 0.88);
  --surface-strong: #ffffff;
  --border: rgba(16, 31, 63, 0.11);
  --text: #101f3f;
  --muted: #52627d;
  --accent: #0a84ff;
  --accent-strong: #0757c8;
  --accent-soft: rgba(10, 132, 255, 0.12);
  --violet: #5e5ce6;
  --cyan: #5ac8fa;
  --green: #34c759;
  --shadow: rgba(16, 31, 63, 0.13);
  margin: 0;
  background:
    linear-gradient(145deg, rgba(10, 132, 255, 0.16), transparent 34%),
    linear-gradient(28deg, rgba(94, 92, 230, 0.13), transparent 38%),
    linear-gradient(315deg, rgba(90, 200, 250, 0.16), transparent 34%),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
}

a {
  color: var(--accent-strong);
}

.page {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 56px;
}

.topbar,
.footer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.topbar {
  margin-bottom: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.brand img {
  border-radius: 8px;
}

.site-nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.site-nav a,
.lang-select {
  min-height: 38px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  padding: 0 14px;
  text-decoration: none;
}

.site-nav a.active {
  background: var(--text);
  color: #fff;
  border-color: var(--text);
}

.lang-select {
  padding: 0 12px;
}

.hero {
  min-height: calc(100vh - 150px);
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.98fr);
  gap: 34px;
  align-items: center;
  padding: 34px;
  border: 1px solid var(--border);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: 0 24px 70px var(--shadow);
  backdrop-filter: blur(18px);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent-strong);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(44px, 7vw, 78px);
  line-height: 0.98;
}

h2 {
  margin: 0 0 12px;
  font-size: clamp(25px, 4vw, 36px);
}

h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.subhead {
  margin: 16px 0 0;
  color: var(--text);
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.18;
}

.lead,
.card p,
.panel p,
.panel li,
.article p,
.article li,
details p,
.footer-bar {
  color: var(--muted);
  line-height: 1.7;
}

.lead {
  max-width: 720px;
  font-size: 18px;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 22px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 10px;
  font-weight: 700;
  text-decoration: none;
}

.button.primary {
  background: var(--accent);
  color: #fff;
}

.button.secondary {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.store-icon {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  border-radius: 5px;
}

.preview-panel {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 430px;
}

.window {
  width: 100%;
  min-height: 360px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 18px;
  background: #111827;
  box-shadow: 0 24px 60px rgba(10, 36, 84, 0.28);
}

.traffic {
  display: flex;
  gap: 8px;
  padding: 14px;
  background: #1f2937;
}

.traffic span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
}

.traffic span:nth-child(2) { background: var(--violet); }
.traffic span:nth-child(3) { background: var(--green); }

pre {
  margin: 0;
  padding: 22px;
  color: #d1d5db;
  white-space: pre-wrap;
  font: 14px/1.65 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.section,
.split-section {
  margin-top: 24px;
}

.grid,
.split-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.card,
.panel,
.article,
.support-card {
  border: 1px solid var(--border);
  border-radius: 22px;
  background: var(--surface);
  box-shadow: 0 18px 48px var(--shadow);
}

.card,
.panel,
.article,
.support-card {
  padding: 22px;
}

.article {
  max-width: 880px;
  margin: 0 auto;
}

.article h1 {
  font-size: clamp(36px, 6vw, 58px);
}

.article section {
  margin-top: 24px;
}

.faq-list {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

details {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px 18px;
  background: var(--surface-strong);
}

summary {
  cursor: pointer;
  font-weight: 700;
}

.support-card {
  margin-top: 20px;
}

.footer-bar {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  font-size: 14px;
}

@media (max-width: 800px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 22px;
  }

  .preview-panel {
    min-height: 280px;
  }

  .window {
    min-height: 280px;
  }
}

@media (prefers-color-scheme: dark) {
  body {
    --bg: #0b0f16;
    --surface: rgba(18, 24, 34, 0.88);
    --surface-strong: #121822;
    --border: rgba(255, 255, 255, 0.10);
    --text: #f8fafc;
    --muted: #a7b0bd;
    --accent: #4da3ff;
    --accent-strong: #78b8ff;
    --accent-soft: rgba(77, 163, 255, 0.14);
    --violet: #8e8cff;
    --cyan: #64d2ff;
    --green: #30d158;
    --shadow: rgba(0, 0, 0, 0.35);
    background:
      linear-gradient(145deg, rgba(77, 163, 255, 0.18), transparent 34%),
      linear-gradient(28deg, rgba(142, 140, 255, 0.14), transparent 38%),
      linear-gradient(315deg, rgba(100, 210, 255, 0.12), transparent 34%),
      linear-gradient(180deg, #080b10 0%, #111827 56%, #0b0f16 100%);
  }

  .site-nav a.active {
    background: #f8fafc;
    color: #111827;
    border-color: #f8fafc;
  }
}