/* Rhythm Soul — public site. Drop this folder on GitHub Pages. */
:root {
  --ink: #2f3a32;
  --muted: #5b675e;
  --paper: #f4f8ec;
  --card: #fffcf6;
  --line: #d7e0cc;
  --green: #58cc02;
  --green-dark: #46a302;
  --sky: #c8e8f4;
  --leaf: #7ac70c;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Nunito", "PingFang TC", "Noto Sans TC", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 480px at 50% -80px, var(--sky), transparent 70%),
    var(--paper);
  line-height: 1.55;
  min-height: 100vh;
}

a { color: var(--green-dark); font-weight: 800; text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 28px 20px 72px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 36px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--ink);
  text-decoration: none;
}

.mascot {
  width: 42px;
  height: 42px;
}

.lang {
  display: flex;
  gap: 6px;
}
.lang button {
  border: 2px solid var(--line);
  background: var(--card);
  color: var(--ink);
  border-radius: 999px;
  padding: 6px 12px;
  font: inherit;
  font-weight: 800;
  font-size: 13px;
  cursor: pointer;
}
.lang button[aria-pressed="true"] {
  background: var(--green);
  border-color: var(--green-dark);
  color: #fff;
}

.hero {
  background: var(--card);
  border: 2px solid #1c1c1c1a;
  border-radius: 28px;
  padding: 36px 28px 32px;
  text-align: center;
}

.hero-icon {
  width: 140px;
  height: 140px;
  margin: 0 auto 8px;
  display: block;
  border-radius: 32px;
}
.mascot { border-radius: 10px; object-fit: cover; }

h1 {
  font-size: clamp(32px, 6vw, 48px);
  margin: 8px 0 6px;
  letter-spacing: -0.04em;
}
.tag {
  color: var(--green-dark);
  font-weight: 800;
  font-size: 20px;
  margin: 0 0 12px;
}
.lede {
  color: var(--muted);
  font-size: 17px;
  margin: 0 auto 22px;
  max-width: 34em;
}

.btn {
  display: inline-block;
  background: var(--green);
  color: #fff;
  font-weight: 800;
  padding: 14px 28px;
  border-radius: 16px;
  box-shadow: 0 5px 0 var(--green-dark);
  text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(1px); box-shadow: 0 4px 0 var(--green-dark); }

.grid {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}
@media (min-width: 640px) {
  .grid { grid-template-columns: 1fr 1fr; }
}
.card {
  background: var(--card);
  border: 2px solid #1c1c1c14;
  border-radius: 20px;
  padding: 18px 18px 16px;
}
.card h2 {
  margin: 0 0 6px;
  font-size: 18px;
}
.card p { margin: 0; color: var(--muted); font-size: 15px; }

.note {
  margin-top: 28px;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}

.prose h1 { font-size: 36px; }
.prose h2 { margin-top: 28px; font-size: 20px; }
.prose p, .prose li { color: var(--ink); }
.prose ul { padding-left: 1.2em; }
.updated { color: var(--muted); font-size: 13px; }

footer {
  margin-top: 40px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}
footer a { margin: 0 8px; }