:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
  color: #252525;
  background: #f6f7f8;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body { min-height: 100vh; font-size: 16px; line-height: 1.7; }
.shell { min-height: 100vh; display: grid; place-items: center; padding: 32px 20px; }
.card { width: min(100%, 680px); background: #fff; border: 1px solid #e5e7eb; border-radius: 24px; padding: clamp(28px, 5vw, 56px); box-shadow: 0 18px 50px rgba(0,0,0,.06); }
.eyebrow { margin: 0 0 12px; font-size: 14px; font-weight: 700; letter-spacing: .12em; }
h1 { margin: 0; font-size: clamp(34px, 7vw, 58px); line-height: 1.2; letter-spacing: -.02em; }
h1 span { display: inline-block; margin-top: 6px; }
.lead { margin: 28px 0 0; font-size: clamp(18px, 3.2vw, 22px); }
.status { display: flex; align-items: center; gap: 10px; margin-top: 30px; padding: 14px 16px; border-radius: 14px; background: #f3f4f6; font-weight: 700; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: currentColor; flex: 0 0 auto; }
.version { margin: 20px 0 0; font-size: 14px; }
@media (max-width: 480px) { .shell { padding: 20px 14px; } .card { border-radius: 18px; } }