:root { --main: #1565c0; --text: #212121; --sub: #616161; }
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif; color: var(--text); line-height: 1.8; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }
.site-header { border-bottom: 1px solid #e0e0e0; background: #fff; }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-weight: 800; font-size: 20px; color: var(--main); text-decoration: none; }
nav a { margin-left: 16px; color: var(--sub); text-decoration: none; }
.btn { display: inline-block; background: var(--main); color: #fff !important; padding: 6px 16px; border-radius: 6px; text-decoration: none; }
.btn-lg { padding: 12px 28px; font-size: 18px; }
.hero { background: linear-gradient(135deg, #e3f2fd, #e8f5e9); padding: 72px 0; text-align: center; }
.hero h1 { font-size: 36px; margin: 0 0 12px; }
.lead { color: var(--sub); margin: 0 0 28px; }
.block { padding: 48px 20px; }
.block h2 { border-left: 6px solid var(--main); padding-left: 12px; }
.site-footer { border-top: 1px solid #e0e0e0; padding: 24px 0; color: var(--sub); font-size: 14px; text-align: center; }
.sub-link { margin-top: 16px; }
.site-footer a { color: var(--sub); }
.form { display: grid; gap: 14px; max-width: 520px; }
.form label { display: grid; gap: 4px; }
.form input:not([type=radio]):not([type=checkbox]) { padding: 10px; border: 1px solid #bdbdbd; border-radius: 6px; font-size: 16px; }
.form fieldset { border: 1px solid #e0e0e0; border-radius: 6px; }
.form .radio { display: flex; align-items: center; gap: 8px; }
.form button { border: 0; cursor: pointer; justify-self: start; }
.req { color: #c62828; }
.trap { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.msg { min-height: 1.5em; color: #c62828; }
.msg.ok { color: #2e7d32; }
@media (max-width: 640px) { nav a { margin-left: 8px; font-size: 14px; } .site-header .wrap { height: auto; flex-wrap: wrap; padding: 8px 20px; } }
.tagline { font-size: 20px; font-weight: 700; color: var(--main); margin: 0 0 8px; }