:root {
  --bg: #f4f6f8;
  --ink: #14212b;
  --muted: #5c6570;
  --accent: #006766;
  --line: #e5e7eb;
  --card: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", sans-serif;
  background: linear-gradient(165deg, var(--bg), #e8f4f3);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.site-header {
  background: var(--accent);
  color: #fff;
  padding: 14px 20px;
}

.site-header a {
  color: #fff;
  text-decoration: none;
  font-weight: 650;
  font-size: 14px;
}

.site-header a:hover {
  text-decoration: underline;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 36px 20px 80px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px 28px 32px;
  box-shadow: 0 1px 2px rgba(20, 33, 43, 0.04), 0 8px 24px rgba(20, 33, 43, 0.06);
}

h1 {
  font-size: 1.7rem;
  margin: 0 0 8px;
  color: var(--accent);
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.1rem;
  margin-top: 1.75rem;
  color: var(--ink);
}

p, li { color: var(--muted); }

.meta {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

a { color: var(--accent); }

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 2rem 0;
}

code {
  font-size: 0.9em;
  background: #eef3f3;
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

.app-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.app-list a {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--card);
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
}

.app-list a:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
}

.app-list span {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  font-weight: 400;
  color: var(--muted);
}