:root { --ink: #1d2330; --muted: #5b6474; --accent: #2457d6; --bg: #ffffff; --soft: #f4f6fa; }
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", sans-serif; color: var(--ink); background: var(--bg); line-height: 1.6; }
a { color: var(--accent); }
.wrap { max-width: 60rem; margin: 0 auto; padding: 0 1.25rem; }
header.site { border-bottom: 1px solid #e3e7ee; }
header.site .wrap { display: flex; align-items: center; gap: 1.5rem; height: 4rem; }
header.site .brand { font-weight: 700; font-size: 1.15rem; color: var(--ink); text-decoration: none; }
header.site nav { display: flex; gap: 1.25rem; margin-left: auto; align-items: center; }
header.site nav a { color: var(--ink); text-decoration: none; }
.button { display: inline-block; background: var(--accent); color: #fff !important; padding: 0.55rem 1.1rem; border-radius: 6px; text-decoration: none; font-weight: 600; }
.hero { padding: 5rem 0 3rem; }
.hero h1 { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.15; margin: 0 0 1rem; }
.hero p { font-size: 1.2rem; color: var(--muted); max-width: 40rem; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1rem; padding: 2rem 0 4rem; }
.features article { background: var(--soft); border-radius: 8px; padding: 1.25rem; }
.features h2 { font-size: 1.1rem; margin: 0 0 0.5rem; }
main.page { padding: 3rem 0 4rem; }
main.page article { max-width: 42rem; }
.meta { color: var(--muted); font-size: 0.9rem; }
footer.site { border-top: 1px solid #e3e7ee; color: var(--muted); font-size: 0.9rem; padding: 2rem 0; }

/* contact form */
form.contact label { display: block; margin: 0 0 .9rem; }
form.contact input, form.contact textarea { display: block; width: 100%; max-width: 36rem; padding: .5rem .6rem; margin-top: .25rem; border: 1px solid #c8c8c8; border-radius: 4px; font: inherit; }
form.contact .hp { position: absolute; left: -10000px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.notice { padding: .6rem .8rem; border-radius: 4px; background: #fff4e5; border: 1px solid #f0c48a; }