:root { color-scheme: light; font-family: system-ui, -apple-system, "Segoe UI", sans-serif; color: #19332d; background: #f2f6f3; }
* { box-sizing: border-box; }
body { margin: 0; }
main { max-width: 680px; margin: 0 auto; padding: 48px 20px; }
.badge { font-size: 12px; font-weight: 700; letter-spacing: .12em; color: #126454; }
h1 { font-size: clamp(36px, 7vw, 52px); line-height: 1.2; letter-spacing: -.04em; margin: 22px 0; }
h2 { font-size: 19px; margin: 0 0 12px; }
p { line-height: 1.7; }
.intro { color: #536860; margin-bottom: 30px; }
section { padding: 24px; background: white; border: 1px solid #dbe7df; border-radius: 18px; margin: 16px 0; }
label { display: block; font-size: 13px; margin: 18px 0 8px; }
input, select { width: 100%; padding: 12px; border: 1px solid #c6d8ce; border-radius: 8px; font: inherit; background: white; color: inherit; }
button { background: #126454; color: white; border: 1px solid transparent; border-radius: 9px; padding: 12px 18px; font: inherit; font-weight: 600; cursor: pointer; margin-top: 16px; }
button:disabled { opacity: .45; cursor: not-allowed; }
button.secondary { color: #126454; background: white; border-color: #c6d8ce; }
.buttons { display: flex; gap: 10px; flex-wrap: wrap; }
.hint, footer { font-size: 13px; color: #62746c; line-height: 1.7; }
pre { white-space: pre-wrap; overflow-wrap: anywhere; font: 13px/1.8 ui-monospace, monospace; background: #f2f6f3; border-radius: 8px; padding: 14px; max-height: 320px; overflow: auto; }
#ios-guide { border-left: 3px solid #b38316; padding-left: 12px; }
footer { padding: 8px; }