:root {
  color-scheme: light;
  --blue: #0798e7;
  --blue-deep: #0571bd;
  --cream: #fff4c7;
  --yellow: #f6c747;
  --navy: #102a43;
  --ink: #243b53;
  --white: #ffffff;
  --card: rgba(255, 255, 255, 0.94);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  color: var(--ink);
  background: #eaf8ff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 0; background: linear-gradient(180deg, #dff6ff 0%, #f8fcff 65%, #fffaf0 100%); }
a { color: #005fa3; text-underline-offset: 0.18em; }
a:hover { color: #003f70; }
a:focus-visible, .button:focus-visible { outline: 4px solid var(--navy); outline-offset: 4px; }
img { display: block; max-width: 100%; height: auto; }

.skip-link { position: fixed; z-index: 10; left: 1rem; top: 1rem; padding: 0.65rem 1rem; border-radius: 0.7rem; background: var(--cream); color: var(--navy); font-weight: 800; transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); }

.site-header { background: linear-gradient(135deg, var(--blue), var(--blue-deep)); border-bottom: 4px solid var(--yellow); }
.brand { width: min(1080px, calc(100% - 2rem)); margin: 0 auto; min-height: 76px; display: flex; align-items: center; gap: 0.8rem; color: var(--white); text-decoration: none; font-weight: 900; letter-spacing: 0.06em; }
.brand img { width: 52px; height: 52px; border-radius: 13px; }

main { width: min(1080px, calc(100% - 2rem)); margin: 0 auto; }
.hero { padding: clamp(2rem, 6vw, 4.5rem) 0 2rem; display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr); align-items: center; gap: clamp(1.5rem, 5vw, 4rem); }
.hero-copy { text-align: left; }
.app-icon { width: 132px; border-radius: 28px; box-shadow: 0 14px 36px rgba(16, 42, 67, 0.2); }
h1, h2, h3 { color: var(--navy); line-height: 1.15; }
h1 { margin: 1.15rem 0 0; font-size: clamp(2.4rem, 7vw, 4.8rem); letter-spacing: 0.02em; }
.tagline { margin: 0.3rem 0 0.75rem; color: #a45a00; font-size: clamp(1.3rem, 3vw, 1.8rem); font-weight: 800; }
.description { max-width: 37rem; margin: 0 0 1.4rem; font-size: 1.08rem; }
.button { display: inline-block; padding: 0.78rem 1.2rem; border: 3px solid var(--navy); border-radius: 999px; color: var(--navy); background: var(--cream); box-shadow: 4px 5px 0 var(--navy); font-weight: 850; text-decoration: none; }
.button:hover { color: var(--navy); background: #ffe998; transform: translateY(-1px); }
.feature-graphic { width: 100%; border: 5px solid var(--white); border-radius: 28px; box-shadow: 0 18px 44px rgba(16, 42, 67, 0.2); }

.features { padding: 1rem 0 3.5rem; }
.features h2 { margin: 0 0 1rem; text-align: center; font-size: clamp(1.6rem, 4vw, 2.2rem); }
.feature-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.8rem; }
.feature-grid li { min-width: 0; padding: 1rem; border: 2px solid #b9e6fa; border-radius: 18px; background: var(--card); color: var(--navy); font-weight: 750; text-align: center; box-shadow: 0 7px 18px rgba(16, 42, 67, 0.08); }

.policy-shell { max-width: 880px; padding: 2.5rem 0 4rem; }
.policy-card { padding: clamp(1.25rem, 5vw, 3rem); border: 2px solid #c5e9f7; border-radius: 28px; background: var(--card); box-shadow: 0 18px 42px rgba(16, 42, 67, 0.12); }
.policy-card h1 { margin: 1rem 0 1.5rem; font-size: clamp(2.1rem, 6vw, 3.4rem); }
.policy-card h2 { margin: 2.2rem 0 0.6rem; font-size: 1.55rem; }
.policy-card h3 { margin: 1.5rem 0 0.4rem; font-size: 1.16rem; }
.policy-card p, .policy-card li { font-size: 1.02rem; }
.back-link { font-weight: 800; }
.policy-meta { display: grid; gap: 0.7rem; margin: 0 0 1.3rem; }
.policy-meta div { display: grid; grid-template-columns: 9rem 1fr; gap: 0.8rem; }
.policy-meta dt { color: var(--navy); font-weight: 800; }
.policy-meta dd { margin: 0; overflow-wrap: anywhere; }

footer { padding: 1.5rem 1rem 2.2rem; border-top: 1px solid #b9dbea; text-align: center; color: #486581; }
footer p { margin: 0 0 0.35rem; }
footer a { font-weight: 750; }

@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; text-align: center; }
  .hero-copy { text-align: center; }
  .app-icon { margin-inline: auto; width: 116px; }
  .description { margin-inline: auto; }
  .feature-graphic { border-radius: 20px; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 520px) {
  main, .brand { width: min(1080px, calc(100% - 1.2rem)); }
  .brand { min-height: 68px; }
  .brand img { width: 46px; height: 46px; }
  .hero { padding-top: 1.5rem; }
  .feature-grid { grid-template-columns: 1fr; }
  .policy-shell { padding-top: 1rem; }
  .policy-card { border-radius: 20px; }
  .policy-meta div { grid-template-columns: 1fr; gap: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}