:root {
  color-scheme: light;
  --bg: #eef2f7;
  --surface: #ffffff;
  --surface-strong: #f8fafc;
  --text: #111827;
  --text-muted: #475569;
  --accent: #0058d9;
  --accent-strong: #0077ff;
  --border: rgba(148, 163, 184, 0.24);
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
  --radius: 24px;
  --max-width: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, rgba(59, 130, 246, 0.1), transparent 30%), #f5f7fb;
  color: var(--text);
}

img {
  max-width: 100%;
  display: block;
}

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

button,
input,
textarea {
  font: inherit;
}

.container {
  width: min(100%, var(--max-width));
  margin-left: auto;
  margin-right: auto;
  padding: 0 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(148, 163, 184, 0.16);
}

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

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

.logo {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  object-fit: cover;
  background: #eef2f7;
  border: 1px solid rgba(148, 163, 184, 0.24);
}

.brand h1,
.brand .eyebrow {
  margin: 0;
}

.brand h1 {
  font-size: 1rem;
  font-weight: 700;
}

.brand .eyebrow {
  font-size: 0.8rem;
  color: var(--accent-strong);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  gap: 24px;
  align-items: center;
}

.site-nav a {
  color: var(--text-muted);
  font-weight: 600;
}

.site-nav a:hover {
  color: var(--text);
}

.nav-toggle {
  display: none;
  border: 1px solid rgba(148, 163, 184, 0.24);
  background: rgba(255, 255, 255, 0.92);
  color: var(--text);
  padding: 12px 16px;
  border-radius: 999px;
}

.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 14px;
  padding: 18px 24px 24px;
}

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

.hero,
.hero-compact {
  padding: 72px 0 56px;
}

.hero-grid,
.split-layout,
.support-grid,
.gallery-grid {
  display: grid;
  gap: 32px;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 1fr);
  align-items: center;
}

.hero-copy h2,
.section-intro h2,
.section-intro h3,
.card h4,
.privacy-card h2 {
  margin: 0 0 18px;
  line-height: 1.05;
}

.eyebrow {
  margin: 0 0 12px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-strong);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.lead {
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--text-muted);
  max-width: 720px;
}

.hero-actions,
.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

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

.button-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: white;
}

.button-secondary {
  border: 1px solid rgba(71, 85, 105, 0.18);
  background: #ffffff;
  color: var(--text);
}

.button-tertiary {
  color: var(--accent);
}

.section {
  padding: 64px 0;
}

.section-large {
  padding-top: 96px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 28px;
}

.card-feature {
  display: grid;
  grid-template-columns: 1fr minmax(260px, 440px);
  gap: 32px;
  align-items: center;
}

.card-media img {
  border-radius: 20px;
}

.card-content h3,
.card-content p,
.card-content ul {
  margin: 0;
}

.feature-list,
.compatibility-list,
.steps-list {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.feature-list li,
.compatibility-list li,
.steps-list li {
  padding-left: 1.4em;
  position: relative;
  color: var(--text);
}

.feature-list li::before,
.compatibility-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.steps-list li {
  counter-increment: step;
}

.steps-list li::before {
  content: counter(step) ".";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.section-intro {
  max-width: 760px;
}

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

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

.gallery-grid figure {
  margin: 0;
}

.gallery-grid figcaption {
  margin-top: 12px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.support-panel,
.support-card,
.privacy-card,
.card-cta {
  background: var(--surface-strong);
  border: 1px solid rgba(148, 163, 184, 0.16);
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.06);
}

.support-panel,
.support-card,
.card-cta {
  padding: 28px;
  border-radius: 26px;
}

.support-grid {
  display: grid;
  gap: 24px;
}

.support-grid .support-card ul {
  padding-left: 1.4em;
}

.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.split-reverse {
  direction: rtl;
}

.split-reverse > * {
  direction: ltr;
}

.compatibility-list {
  display: grid;
  gap: 12px;
  padding-left: 0;
}

.compatibility-list li {
  position: relative;
  padding-left: 1.4em;
}

.compatibility-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.site-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.18);
  padding: 26px 0;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}

.footer-nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--text-muted);
}

@media (max-width: 980px) {
  .hero-grid,
  .card-feature,
  .split-layout,
  .gallery-grid,
  .support-grid {
    grid-template-columns: 1fr;
  }

  .site-nav {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .hero,
  .hero-compact {
    padding-top: 64px;
  }
}

@media (max-width: 720px) {
  .container {
    padding: 0 18px;
  }

  .hero-actions,
  .card-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .eyebrow {
    letter-spacing: 0.12em;
  }

  .section {
    padding: 48px 0;
  }

  .section-large {
    padding-top: 72px;
  }
}

@media (max-width: 560px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .card-feature,
  .section-intro {
    gap: 18px;
  }
}