:root { color-scheme: light; font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif; color: #17211d; background: #f5f7f6; }
body { margin: 0; }
main { box-sizing: border-box; width: min(760px, 100%); margin: 0 auto; padding: 48px 22px 80px; }
h1 { margin: 8px 0 28px; font-size: clamp(32px, 7vw, 48px); line-height: 1.15; }
h2 { margin: 30px 0 8px; font-size: 20px; }
p { color: #52605a; line-height: 1.75; }
a { color: #227a5b; }
.brand { color: #227a5b; font-weight: 700; letter-spacing: .08em; }
.updated { color: #77847f; font-size: 14px; }
.back { display: inline-block; margin-bottom: 18px; text-decoration: none; }
.cards { display: grid; gap: 14px; margin-top: 34px; }
.cards a { display: grid; gap: 6px; padding: 20px; border: 1px solid #dfe7e3; border-radius: 16px; background: white; text-decoration: none; box-shadow: 0 8px 24px rgb(30 72 56 / 6%); }
.cards strong { color: #17211d; font-size: 19px; }
.cards span { color: #69766f; }
.invitation-page { min-height: 100vh; display: grid; align-content: center; }
.invitation-card { padding: 28px 22px; border: 1px solid #dfe7e3; border-radius: 22px; background: white; box-shadow: 0 12px 36px rgb(30 72 56 / 8%); text-align: center; }
.invitation-card h1 { margin: 14px 0 10px; font-size: clamp(30px, 7vw, 42px); }
.invitation-icon { display: grid; place-items: center; width: 64px; height: 64px; margin: 0 auto; border-radius: 18px; background: #e4f1eb; color: #227a5b; font-size: 25px; font-weight: 800; }
.primary-link { display: block; margin-top: 24px; padding: 14px 18px; border-radius: 14px; background: #227a5b; color: white; font-weight: 700; text-decoration: none; }
.download-panel { margin-top: 18px; padding: 18px; border-radius: 14px; background: #f2f6f4; text-align: left; }
.download-panel p { margin: 7px 0 14px; font-size: 14px; }
.secondary-link { display: inline-block; padding: 10px 14px; border: 1px solid #227a5b; border-radius: 12px; font-weight: 700; text-decoration: none; }
.invitation-note, .safe-note { font-size: 14px; }
.invitation-error { color: #b63b32; font-weight: 600; }
.safe-note { text-align: center; }