body { font-family: system-ui, Segoe UI, Arial, sans-serif; line-height: 1.55; margin: 0; color: #222; }
.container { max-width: 900px; margin: 0 auto; padding: 1.25rem; }
nav { background: #f6f6f6; border-bottom: 1px solid #ddd; }
nav .container { display: flex; gap: 1rem; align-items: center; }
nav a { text-decoration: none; color: #333; padding: .5rem .25rem; }
h1, h2 { margin: 1rem 0 .5rem; }
.card { background: #fff; border: 1px solid #eee; border-radius: 10px; padding: 1rem; box-shadow: 0 1px 2px rgba(0,0,0,.04); }
label { display:block; margin: .6rem 0 .2rem; font-weight: 600; }
input[type="text"], input[type="tel"], textarea { width: 100%; max-width: 700px; padding: .6rem; border: 1px solid #ccc; border-radius: 8px; }
button { padding: .6rem 1rem; border: 1px solid #333; background: #fafafa; border-radius: 8px; cursor: pointer; }
footer { margin-top: 2rem; border-top: 1px solid #eee; padding: 1rem 0; color: #555; }
.notice { background: #f0f8ff; border: 1px solid #cde; padding: .75rem; border-radius: 10px; }