:root {
  --primary: #06B6D4;
  --primary-dark: #0E7490;
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --bg: #F8FAFC;
  --card-border: rgba(6, 182, 212, 0.14);
  --card-shadow: rgba(6, 182, 212, 0.08);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background:
    radial-gradient(1200px 600px at 20% -10%, rgba(6, 182, 212, 0.08), transparent 60%),
    radial-gradient(900px 500px at 120% 10%, rgba(14, 116, 144, 0.06), transparent 60%),
    var(--bg);
  min-height: 100vh;
}

.container {
  max-width: 780px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
}

.topbar img { width: 36px; height: 36px; }

.topbar .brand {
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.3px;
}

.topbar .brand .accent { color: var(--primary); }

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

.lang-switch {
  margin-left: auto;
  display: flex;
  gap: 4px;
  background: #fff;
  border: 1px solid var(--card-border);
  border-radius: 999px;
  padding: 3px;
}

.lang-switch a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 26px;
  padding: 0 8px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.4px;
  color: var(--text-secondary);
  border-radius: 999px;
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
}

.lang-switch a.active {
  background: var(--primary);
  color: #fff;
}

.lang-switch a:not(.active):hover {
  background: rgba(6, 182, 212, 0.08);
  color: var(--primary);
}

h1 {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.8px;
  margin: 0 0 4px;
  line-height: 1.15;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 15px;
  margin: 0 0 24px;
}

.intro {
  background: linear-gradient(135deg, #06B6D4, #0E7490);
  color: #fff;
  border-radius: 20px;
  padding: 20px 22px;
  box-shadow: 0 14px 28px -12px rgba(6, 182, 212, 0.4);
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 20px;
}

.intro .icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.22);
  border: 1px solid rgba(255, 255, 255, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 20px;
}

.intro h2 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.3px;
}

.intro p {
  margin: 0;
  font-size: 13.5px;
  font-weight: 500;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.92);
}

.card {
  background: #fff;
  border-radius: 18px;
  border: 1px solid var(--card-border);
  box-shadow: 0 10px 20px -12px var(--card-shadow);
  padding: 18px 20px;
  margin: 0 0 12px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.card .card-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(6, 182, 212, 0.12);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.card h3 {
  font-size: 15.5px;
  font-weight: 800;
  letter-spacing: -0.2px;
  margin: 0 0 8px;
  color: var(--text-primary);
}

.card p,
.card ul {
  margin: 0 0 8px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.55;
}

.card p:last-child,
.card ul:last-child { margin-bottom: 0; }

.card ul {
  padding-left: 18px;
}

.card ul li {
  margin-bottom: 4px;
}

.card a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

.card a:hover { text-decoration: underline; }

.footer-note {
  margin-top: 20px;
  background: rgba(6, 182, 212, 0.06);
  border-radius: 14px;
  padding: 14px 16px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.5;
}

.footer-note .icon { color: var(--primary); font-size: 16px; }

.bottom-links {
  text-align: center;
  margin-top: 36px;
  color: var(--text-muted);
  font-size: 13px;
}

.bottom-links a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  margin: 0 8px;
}

.bottom-links a:hover { text-decoration: underline; }

/* Landing page */
.hero {
  text-align: center;
  padding: 48px 20px 24px;
}

.hero img {
  width: 96px;
  height: 96px;
  border-radius: 24px;
  box-shadow: 0 20px 40px -16px rgba(6, 182, 212, 0.45);
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 38px;
  margin-bottom: 10px;
}

.hero h1 .accent { color: var(--primary); }

.hero p {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 520px;
  margin: 0 auto 28px;
  line-height: 1.55;
}

.hero .stores {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero .store-btn {
  background: #fff;
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 12px 20px;
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  cursor: default;
}

.hero .store-btn span {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.hero .store-btn strong {
  display: block;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 15px;
  margin-top: 2px;
}

@media (max-width: 480px) {
  h1 { font-size: 24px; }
  .hero h1 { font-size: 28px; }
  .container { padding: 24px 16px 64px; }
  .intro, .card { padding: 16px; }
}