:root{color-scheme:light}*{box-sizing:border-box}html,body{margin:0;min-height:100%}body{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,Helvetica,Arial,sans-serif;color:#0b2b3c;background:linear-gradient(160deg,#eafcff,#cdf1f7,#9fe0ec 60%,#6cc4d9 85%,#3f9fbd);background-attachment:fixed}.page{width:100%;display:flex;justify-content:center}.card{max-width:32rem;width:100%;text-align:center;padding:2.5rem 2rem;border-radius:1.5rem;background:#ffffff8c;box-shadow:0 20px 60px #0f4c612e;backdrop-filter:blur(6px)}h1{margin:0 0 1rem;font-size:clamp(2rem,6vw,2.75rem);font-weight:700;letter-spacing:.05em;color:#084b63}.tagline{margin:0;font-size:clamp(1rem,3vw,1.15rem);line-height:1.7;color:#14607e}.credits-link{margin:1.25rem 0 0;font-size:.85rem}.credits-link a{color:#14607e;text-decoration:underline;text-underline-offset:.2em}@media(max-width:480px){.card{padding:2rem 1.25rem;border-radius:1.25rem}}