:root { --ink: #1f2933; --muted: #52606d; --line: #d9e2ec; --bg: #f7f9fb; --accent: #1b5e3b; }
* { box-sizing: border-box; }
body { margin: 0; font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; color: var(--ink); background: var(--bg); }
header { background: #fff; border-bottom: 1px solid var(--line); }
.wrap { max-width: 860px; margin: 0 auto; padding: 0 20px; }
header .wrap { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px 24px; padding-top: 18px; padding-bottom: 14px; }
.site-name { font-weight: 700; font-size: 1.15rem; color: var(--ink); text-decoration: none; }
.site-name small { display: block; font-weight: 400; font-size: .85rem; color: var(--muted); }
nav a { color: var(--accent); text-decoration: none; margin-right: 18px; font-weight: 600; }
nav a:last-child { margin-right: 0; }
nav a[aria-current="page"] { text-decoration: underline; }
main { background: #fff; border: 1px solid var(--line); border-radius: 10px; margin: 28px auto; padding: 8px 32px 28px; }
h1 { font-size: 1.7rem; line-height: 1.25; margin: 24px 0 8px; }
h2 { font-size: 1.2rem; margin: 28px 0 6px; }
p, li { color: var(--ink); }
.muted { color: var(--muted); font-size: .95rem; }
.card { border: 1px solid var(--line); border-radius: 8px; padding: 14px 18px; background: var(--bg); }
.sms { font-family: ui-monospace, Consolas, monospace; font-size: .9rem; background: #eef6f1; border-left: 4px solid var(--accent); padding: 10px 14px; margin: 8px 0 14px; white-space: pre-wrap; word-break: break-word; }
.notice { border: 1px solid #f0d78c; background: #fffbea; border-radius: 8px; padding: 12px 16px; font-size: .95rem; }
dl { display: grid; grid-template-columns: max-content 1fr; gap: 6px 18px; }
dt { font-weight: 600; } dd { margin: 0; }
footer { color: var(--muted); font-size: .85rem; padding: 0 20px 36px; }
a { color: var(--accent); }
@media (max-width: 600px) { main { padding: 4px 18px 20px; } dl { grid-template-columns: 1fr; } dt { margin-top: 8px; } }
.sample{background:#f4f6f8;border-left:4px solid #8a9;padding:.75em 1em;font-family:ui-monospace,Consolas,monospace;font-size:.92em;word-break:break-word}