:root {
  --accent: #1d3a6b;
  --accent-soft: #e7ecf5;
  --accent-hover: #163058;
  --text: #1d1d1f;
  --muted: #5f6368;
  --line: #d8dadf;
  --bg: #f7f8fb;
  --surface: #ffffff;
  --radius: 10px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: var(--accent);
  color: white;
}
.topbar .brand { display: flex; align-items: center; gap: 10px; color: white; text-decoration: none; }
.brand-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px;
  background: white; color: var(--accent);
  border-radius: 8px;
  font-weight: 700;
}
.brand-text { display: inline-flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-weight: 700; font-size: 0.95rem; }
.brand-tag  { font-size: 0.78rem; opacity: 0.78; letter-spacing: 0.05em; }
.topbar nav { display: flex; align-items: center; gap: 14px; }
.topbar nav .who { color: white; opacity: 0.85; font-size: 0.9rem; }
.topbar nav a, .topbar nav button.link {
  color: white;
  text-decoration: none;
  background: none;
  border: none;
  font-size: 0.95rem;
  cursor: pointer;
  padding: 0;
}
.topbar nav .btn.btn-primary { background: white; color: var(--accent); border-radius: 6px; padding: 6px 14px; font-weight: 600; }
.topbar nav .btn.btn-primary:hover { background: var(--accent-soft); text-decoration: none; }

.container { max-width: 980px; margin: 32px auto 48px; padding: 0 24px; }

.hero { padding: 24px 0 12px; }
.hero h1 { font-size: 2.1rem; margin: 0 0 8px; letter-spacing: -0.02em; }
.hero .lede { color: var(--muted); font-size: 1.05rem; margin: 0; }
.hero-cta { display: inline-block; margin-left: 8px; font-weight: 600; }

section { margin-top: 36px; }
section h2 { font-size: 1.1rem; margin: 0 0 14px; color: var(--accent); border-top: 1px solid var(--line); padding-top: 14px; }

/* App tile grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}
.card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px 18px;
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.12s ease, transform 0.12s ease, box-shadow 0.12s ease;
}
.card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(29,58,107,0.08);
  text-decoration: none;
}
.card-head { display: flex; gap: 12px; align-items: center; }
.card-icon {
  width: 38px; height: 38px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent-soft); color: var(--accent);
  border-radius: 8px;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.card-name { font-weight: 600; font-size: 1rem; }
.card-domain { color: var(--muted); font-size: 0.82rem; font-family: Menlo, monospace; }
.card-desc { color: var(--muted); margin: 12px 0 0; font-size: 0.9rem; }

.meta ul { padding-left: 20px; margin: 0; color: var(--muted); }
.meta ul li { margin: 4px 0; }

/* Buttons */
.btn {
  display: inline-block;
  background: var(--accent);
  color: white;
  border: 1px solid var(--accent);
  border-radius: 6px;
  padding: 8px 16px;
  text-decoration: none;
  font-size: 0.95rem;
  cursor: pointer;
}
.btn:hover { background: var(--accent-hover); text-decoration: none; }

/* Error page */
.err-block { max-width: 540px; margin: 60px auto; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 32px; }
.err-block h1 { margin: 4px 0 14px; font-size: 1.4rem; }
.eyebrow { font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: #b3261e; font-weight: 600; }
.err { background: #fdecea; border: 1px solid #e57373; padding: 10px 14px; border-radius: 6px; color: #b3261e; font-size: 0.9rem; }

footer {
  text-align: center;
  color: var(--muted);
  padding: 24px 16px 40px;
  font-size: 0.85rem;
}
footer a { color: var(--muted); margin: 0 6px; }
footer a:hover { color: var(--accent); }

@media (max-width: 560px) {
  .container { margin: 20px auto 32px; padding: 0 16px; }
  .hero h1 { font-size: 1.7rem; }
  .brand-tag { display: none; }
}