:root {
  --pink: #E4729F;
  --pink-light: #FBE9F0;
  --pink-soft: #FFF5F9;
  --text: #1a1a1a;
  --text-muted: #6b6b6b;
  --border: #e6e6e6;
  --bg: #ffffff;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Meiryo", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
}

header {
  background: linear-gradient(135deg, var(--pink) 0%, #E89BB8 100%);
  color: white;
  padding: 48px 24px;
  text-align: center;
}

header h1 {
  margin: 0 0 8px;
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

header p { margin: 0; opacity: 0.95; font-size: 15px; }

nav {
  background: var(--pink-soft);
  border-bottom: 1px solid var(--border);
  padding: 12px 24px;
  text-align: center;
}

nav a {
  color: var(--pink);
  text-decoration: none;
  font-weight: 600;
  margin: 0 16px;
  font-size: 14px;
}

nav a:hover { text-decoration: underline; }

main { max-width: 720px; margin: 0 auto; padding: 48px 24px; }

main h2 {
  font-size: 22px;
  font-weight: 700;
  border-left: 4px solid var(--pink);
  padding-left: 12px;
  margin: 40px 0 16px;
}

main h2:first-child { margin-top: 0; }

main h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 24px 0 8px;
  color: var(--text);
}

main p { margin: 0 0 16px; }

main ul, main ol { padding-left: 24px; margin: 0 0 16px; }

main li { margin: 4px 0; }

.card {
  background: var(--pink-soft);
  border: 1px solid var(--pink-light);
  border-radius: 12px;
  padding: 20px 24px;
  margin: 16px 0;
}

.mail-btn {
  display: inline-block;
  background: var(--pink);
  color: white;
  text-decoration: none;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 700;
  margin: 8px 0;
  font-size: 15px;
}

.mail-btn:hover { opacity: 0.9; }

.muted { color: var(--text-muted); font-size: 14px; }

footer {
  border-top: 1px solid var(--border);
  padding: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

footer a {
  color: var(--text-muted);
  text-decoration: none;
  margin: 0 8px;
}

footer a:hover { text-decoration: underline; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
}

table th, table td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

table th { background: var(--pink-soft); font-weight: 600; }

code {
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  background: #f5f5f5;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 14px;
}

/* Portal: app cards */
.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
  margin: 16px 0 32px;
}

.app-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  transition: border-color 0.15s, transform 0.15s;
}

.app-card:hover {
  border-color: var(--pink);
  transform: translateY(-2px);
}

.app-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.app-card-title h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
}

.app-card-tag {
  margin: 2px 0 0;
  font-size: 13px;
  color: var(--text-muted);
}

.app-card-body {
  margin: 0 0 16px;
  font-size: 14px;
  color: var(--text);
  line-height: 1.6;
}

.app-card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.link-primary {
  display: inline-block;
  background: var(--pink);
  color: white;
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 13px;
}

.link-primary:hover { opacity: 0.9; }

.link-secondary {
  display: inline-block;
  background: var(--pink-soft);
  color: var(--pink);
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 13px;
  border: 1px solid var(--pink-light);
}

.link-secondary:hover {
  background: var(--pink-light);
}