:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #172033;
  background: #f7f8fc;
}
* { box-sizing: border-box; }
body { margin: 0; line-height: 1.65; }
a { color: #5747d9; }
.shell { width: min(880px, calc(100% - 32px)); margin: 0 auto; padding: 32px 0 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: #172033; text-decoration: none; font-weight: 850; }
.brand-mark { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 11px; background: linear-gradient(135deg, #6554e8, #e34f9f); color: white; }
.card { margin-top: 22px; padding: clamp(24px, 5vw, 52px); border: 1px solid #e4e7f0; border-radius: 26px; background: white; box-shadow: 0 18px 55px rgba(33, 37, 70, .08); }
h1 { margin: 0; font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.08; letter-spacing: -.035em; }
h2 { margin: 34px 0 8px; font-size: 1.25rem; line-height: 1.3; }
h3 { margin: 22px 0 6px; font-size: 1.05rem; }
p, li { color: #4a5368; }
ul { padding-left: 1.2rem; }
.updated { margin: 10px 0 24px; color: #6b7386; font-size: .94rem; }
.notice { padding: 16px 18px; border-radius: 16px; background: #f1efff; color: #302677; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.button { display: inline-flex; min-height: 46px; align-items: center; justify-content: center; padding: 0 18px; border-radius: 999px; background: #5747d9; color: white; text-decoration: none; font-weight: 750; }
.button.secondary { border: 1px solid #d9dce7; background: white; color: #353d50; }
footer { padding: 24px 4px 0; color: #747c8e; font-size: .9rem; text-align: center; }
@media (max-width: 520px) { .shell { width: min(100% - 20px, 880px); padding-top: 18px; } .card { border-radius: 20px; } }