:root {
  --bg: #f3f6f8;
  --card: rgba(255, 255, 255, 0.82);
  --text: #0f1a1f;
  --subtext: #4e5d68;
  --line: rgba(15, 26, 31, 0.12);
  --brand: #0f766e;
  --brand-2: #22c55e;
  --chip: rgba(15, 118, 110, 0.1);
  --radius: 18px;
  --panel-shadow: 0 10px 28px rgba(15, 26, 31, 0.09);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% -20%, rgba(34, 197, 94, 0.2), transparent 45%),
    radial-gradient(circle at 95% -5%, rgba(15, 118, 110, 0.25), transparent 40%),
    var(--bg);
}

.container {
  width: min(980px, calc(100% - 32px));
  margin: 0 auto;
}

header.site {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(243, 246, 248, 0.78);
  border-bottom: 1px solid var(--line);
}

header .bar {
  min-height: 64px;
  padding: 10px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.brand .app-icon-mini {
  width: 24px;
  height: 24px;
  border-radius: 7px;
  border: 1px solid rgba(15, 26, 31, 0.12);
  margin-top: 2px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-text strong {
  font-size: 15px;
  font-weight: 700;
}

.brand-text small {
  margin-top: 2px;
  font-size: 11px;
  color: var(--subtext);
}

nav {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

nav a {
  text-decoration: none;
  color: var(--text);
  font-size: 14px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.6);
}

nav a.store-link {
  color: #ffffff;
  border-color: transparent;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}

nav a.lang-link {
  background: rgba(15, 118, 110, 0.08);
  border-color: rgba(15, 118, 110, 0.24);
  color: #0f766e;
  font-weight: 600;
}

main {
  padding: 28px 0 48px;
}

.hero {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 6px);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 24px;
  box-shadow: var(--panel-shadow);
}

.hero h1 {
  margin: 0;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.15;
}

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

.hero-app-icon {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  border: 1px solid var(--line);
  box-shadow: var(--panel-shadow);
}

.hero p {
  margin: 14px 0 0;
  color: var(--subtext);
  font-size: 16px;
  line-height: 1.65;
}

.badges {
  margin-top: 16px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.badge {
  padding: 7px 11px;
  border-radius: 999px;
  font-size: 12px;
  background: var(--chip);
  color: #0f766e;
  border: 1px solid rgba(15, 118, 110, 0.16);
}

.hero-actions {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-shot-rail {
  margin-top: 16px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 2px 0 6px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.hero-shot-rail img {
  flex: 0 0 auto;
  width: 170px;
  height: auto;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--panel-shadow);
  scroll-snap-align: start;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: 999px;
  border: 1px solid var(--line);
  padding: 10px 14px;
  font-size: 14px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.7);
}

.btn.primary {
  color: #ffffff;
  border-color: transparent;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}

.grid {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 12px;
}

.card {
  grid-column: span 12;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--panel-shadow);
}

.card h2 {
  margin: 0 0 10px;
  font-size: 18px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 15px;
}

.card p,
.card li {
  color: var(--subtext);
  line-height: 1.66;
  font-size: 14px;
}

.card ul {
  margin: 0;
  padding-left: 18px;
}

.card code {
  background: rgba(15, 26, 31, 0.06);
  padding: 1px 6px;
  border-radius: 6px;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.footer {
  margin-top: 28px;
  padding: 18px 0 0;
  border-top: 1px solid var(--line);
  color: var(--subtext);
  font-size: 13px;
  text-align: center;
}

.policy-links {
  margin-top: 10px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.policy-links a {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.75);
  color: var(--text);
  font-size: 13px;
}

.notice {
  margin-top: 12px;
  padding: 12px;
  border-radius: 12px;
  border: 1px dashed rgba(15, 118, 110, 0.35);
  background: rgba(15, 118, 110, 0.05);
  color: #0f5f59;
  font-size: 13px;
}

@media (min-width: 760px) {
  .span-6 { grid-column: span 6; }
  .span-4 { grid-column: span 4; }
  .span-8 { grid-column: span 8; }

  .two-col {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 759px) {
  header .bar {
    flex-direction: column;
    align-items: flex-start;
  }
}