*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  background: #f5f5fb;
  color: #1c1c2e;
  line-height: 1.6;
}

/* ── Header ── */
header {
  background: linear-gradient(135deg, #403C97 0%, #5B5BD6 100%);
  color: white;
  padding: 28px 0 24px;
}
header .inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.logo {
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,0.15);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}
.logo img { width: 100%; height: 100%; object-fit: contain; }
header h1 { font-size: 1.35rem; font-weight: 700; letter-spacing: -0.01em; }
header p  { font-size: 0.85rem; opacity: 0.75; margin-top: 2px; }

/* ── Nav ── */
nav {
  background: #403C97;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
nav .inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  flex-wrap: wrap;
}
nav a {
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  font-size: 0.84rem;
  font-weight: 500;
  padding: 11px 14px;
  display: inline-block;
  transition: color 0.15s, background 0.15s;
}
nav a:hover, nav a.active { color: #fff; background: rgba(255,255,255,0.1); }

/* ── Main ── */
main {
  max-width: 860px;
  margin: 40px auto;
  padding: 0 24px 80px;
}

/* ── Hero ── */
.hero {
  background: white;
  border-radius: 16px;
  padding: 48px 40px;
  text-align: center;
  border: 1px solid #e4e4f0;
  margin-bottom: 32px;
}
.hero h2 { font-size: 1.9rem; font-weight: 800; color: #1c1c2e; letter-spacing: -0.02em; margin-bottom: 12px; }
.hero p  { font-size: 1.05rem; color: #555; max-width: 560px; margin: 0 auto 28px; }
.btn {
  display: inline-block;
  background: #5B5BD6;
  color: white;
  text-decoration: none;
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
}
.btn:hover { background: #403C97; }

/* ── Cards ── */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-bottom: 32px; }
.card { background: white; border-radius: 12px; padding: 24px 28px; border: 1px solid #e4e4f0; }
.card-icon-wrap {
  width: 42px; height: 42px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px; flex-shrink: 0;
}
.card-icon-indigo { background: #EEF0FF; color: #5B5BD6; }
.card-icon-violet { background: #F3EEFF; color: #7C3AED; }
.card-icon-blue   { background: #EBF5FF; color: #2563EB; }
.card-icon-green  { background: #ECFDF5; color: #059669; }
.card h3 { font-size: 0.95rem; font-weight: 700; color: #1c1c2e; margin-bottom: 10px; }
.card p, .card ul { font-size: 0.875rem; color: #666; line-height: 1.6; }
.card ul { padding-left: 16px; }
.card ul li { margin-bottom: 4px; }
@media (max-width: 600px) { .cards { grid-template-columns: 1fr; } }

/* ── Content pages ── */
.content { background: white; border-radius: 16px; padding: 40px 44px; border: 1px solid #e4e4f0; }
.content .page-title { font-size: 1.6rem; font-weight: 800; color: #5B5BD6; margin-bottom: 6px; letter-spacing: -0.02em; }
.content .meta { font-size: 0.82rem; color: #999; margin-bottom: 32px; padding-bottom: 20px; border-bottom: 1px solid #f0f0f8; }
.content h3 { font-size: 0.95rem; font-weight: 700; color: #1c1c2e; margin: 28px 0 8px; }
.content p  { font-size: 0.9rem; color: #555; margin-bottom: 10px; line-height: 1.75; }
.content ul { padding-left: 20px; margin-bottom: 10px; }
.content ul li { font-size: 0.9rem; color: #555; margin-bottom: 5px; line-height: 1.7; }
.content a { color: #5B5BD6; text-decoration: none; }
.content a:hover { text-decoration: underline; }

/* ── Release notes ── */
.release { background: white; border-radius: 16px; padding: 40px 44px; border: 1px solid #e4e4f0; margin-bottom: 20px; }
.release-header { display: flex; align-items: baseline; gap: 14px; margin-bottom: 24px; padding-bottom: 16px; border-bottom: 2px solid #f0f0f8; }
.release-date { font-size: 1.1rem; font-weight: 800; color: #5B5BD6; letter-spacing: -0.01em; }
.release-tag { background: #F4F4FF; color: #5B5BD6; font-size: 0.72rem; font-weight: 600; padding: 3px 10px; border-radius: 20px; border: 1px solid #d8d8f8; }
.release-section { margin-bottom: 20px; }
.release-section h4 { font-size: 0.82rem; font-weight: 700; color: #888; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 10px; }
.release-section ul { padding-left: 18px; }
.release-section ul li { font-size: 0.88rem; color: #555; margin-bottom: 5px; line-height: 1.6; }

/* ── Support contact box ── */
.contact-box { background: #F4F4FF; border: 1px solid #d8d8f8; border-radius: 12px; padding: 24px 28px; margin-bottom: 28px; display: flex; align-items: center; gap: 16px; }
.contact-box .icon { font-size: 2rem; }
.contact-box h3 { font-size: 1rem; font-weight: 700; color: #1c1c2e; margin-bottom: 4px; }
.contact-box p  { font-size: 0.88rem; color: #666; }
.contact-box a  { color: #5B5BD6; font-weight: 600; text-decoration: none; }

/* ── Footer ── */
footer { text-align: center; padding: 28px 24px; font-size: 0.8rem; color: #bbb; border-top: 1px solid #eee; }
footer a { color: #5B5BD6; text-decoration: none; }

@media (max-width: 600px) {
  .hero { padding: 32px 24px; }
  .hero h2 { font-size: 1.5rem; }
  .content, .release { padding: 28px 20px; }
}