.skip-link { position: absolute; left: 1rem; top: -4rem; z-index: 1000; padding: .65rem 1rem; border-radius: .35rem; background: #17394a; color: #fff; text-decoration: none; }
.skip-link:focus { top: 1rem; }
.site-404 { box-sizing: border-box; margin: 0; min-height: 100vh; display: grid; place-items: center; padding: clamp(1rem, 4vw, 2rem); background: #f4f7fa; color: #17394a; text-align: center; font-family: system-ui, sans-serif; }
.site-404 * { box-sizing: border-box; }
.site-404-card { width: 100%; min-width: 0; max-width: 42rem; padding: clamp(1rem, 5vw, 3rem); background: #fff; border: 1px solid #d9e2ea; border-radius: .75rem; box-shadow: 0 1rem 3rem rgb(23 57 74 / 10%); }
.site-404-logo { max-width: min(100%, 18rem); height: auto; margin-bottom: 2rem; }
.site-404 h1 { margin: 0 0 1rem; font-size: clamp(2rem, 6vw, 3.5rem); }
.site-404 p { color: #40566c; line-height: 1.6; }
.site-404-links { display: flex; flex-wrap: wrap; justify-content: center; gap: .75rem; margin-top: 2rem; }
.site-404-links a { padding: .7rem 1rem; border-radius: .35rem; background: #17394a; color: #fff; text-decoration: none; }
.site-404-links a:focus-visible { outline: 3px solid #60b9da; outline-offset: 3px; }