:root { color-scheme: light; font-family: system-ui, sans-serif; color: #162d3d; background: #f5f8fa; }
body { margin: 0; }
main { max-width: 840px; margin: 48px auto; padding: 0 24px; }
.brand { color: #356677; font-size: 12px; letter-spacing: .12em; font-weight: 700; }
h1 { font-size: clamp(28px, 5vw, 40px); letter-spacing: -.025em; line-height: 1.15; }
.intro { font-size: 18px; color: #435d6b; line-height: 1.6; }
section { margin: 28px 0; padding: 24px; background: white; border: 1px solid #d5e0e6; border-radius: 12px; }
h2 { margin-top: 0; font-size: 18px; }
p, li { line-height: 1.6; }
ul { padding-left: 20px; }
li + li { margin-top: 10px; }
button { padding: 13px 20px; border: 0; border-radius: 7px; color: white; background: #126377; font: inherit; font-weight: 600; cursor: pointer; }
button:hover { background: #0c5061; }
button:focus-visible { outline: 3px solid #126377; outline-offset: 4px; }
#report-status { color: #435d6b; }
iframe { width: 100%; border: 1px solid #d5e0e6; border-radius: 8px; background: white; }
footer { margin-top: 32px; color: #526875; font-size: 13px; }
@media (max-width: 600px) { main { margin: 24px auto; padding: 0 14px; } section { padding: 18px; } }