* { box-sizing: border-box; }
body { margin: 0; color: var(--fds-text-primary); background: var(--fds-bg-page); font: 400 16px/1.5 Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif; }
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 3px solid var(--fds-blue-600); outline-offset: 2px; }
.skip { position: absolute; left: 16px; top: -100px; padding: 12px; background: var(--fds-bg-panel); z-index: 1; }
.skip:focus { top: 12px; }
header { min-height: 80px; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 40px; border-bottom: 1px solid var(--fds-border); background: var(--fds-bg-panel); }
.brand { display: flex; flex-wrap: wrap; column-gap: 8px; font-size: 18px; font-weight: 600; }
.brand span { color: var(--fds-text-secondary); font-weight: 400; }
nav { display: flex; gap: 8px; }
nav a { min-height: 44px; display: grid; place-items: center; padding: 8px 12px; border: 1px solid transparent; border-radius: var(--fds-radius-xs); }
nav a[aria-current] { border-color: var(--fds-black); box-shadow: inset 0 0 0 1px var(--fds-black); }
nav a:hover { background: var(--fds-bg-muted); }
main { width: min(1040px, 100%); margin: auto; padding: 64px 40px; }
.eyebrow { font-size: 13px; font-weight: 600; letter-spacing: .12em; color: var(--fds-text-secondary); }
h1 { font-size: 32px; line-height: 1.25; font-weight: 600; margin: 20px 0 16px; text-wrap: balance; }
p { color: var(--fds-text-secondary); margin: 8px 0 0; }
.intro { max-width: 640px; }
.notice { margin-top: 40px; padding: 32px; border: 1px solid var(--fds-border-strong); border-radius: var(--fds-radius-md); background: var(--fds-bg-panel); }
.status { display: inline-block; padding: 4px 8px; border-radius: var(--fds-radius-pill); background: var(--fds-amber-50); color: var(--fds-amber-700); font-size: 13px; }
h2 { font-size: 22px; line-height: 30px; font-weight: 600; margin: 16px 0 8px; }
.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; margin-top: 48px; }
.features h2 { font-size: 18px; margin-top: 12px; }
.number { font-size: 13px; color: var(--fds-text-muted); }
footer { display: flex; justify-content: space-between; gap: 24px; margin: 0 40px; padding: 24px 0; border-top: 1px solid var(--fds-border); font-size: 13px; color: var(--fds-text-secondary); }
@media (max-width: 768px) { header { padding: 16px 24px; } main { padding: 40px 24px; } .features { grid-template-columns: 1fr; gap: 24px; margin-top: 32px; } footer { flex-direction: column; margin: 0 24px; gap: 8px; } }
@media (max-width: 520px) { header { padding: 12px 16px; } .brand { flex-direction: column; font-size: 16px; } nav a { padding: 8px; } main { padding: 32px 16px; } .notice { padding: 20px; margin-top: 32px; } h1 { font-size: 28px; } footer { margin: 0 16px; } }