:root{--ink:#e8f4f6;--mute:#9fc3ca;--cy:#27d3c8;--cy2:#12a79f;--deep:#02121a;--line:#1d4a54;--err:#ff9a8f;--ok:#7be0b4}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body.marine{background:var(--deep);color:var(--ink);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;overflow:hidden}
.cover{height:100vh;height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:space-between;text-align:center;padding:1rem;
  background:linear-gradient(180deg,rgba(2,28,38,.55) 0%,rgba(2,18,26,.78) 55%,rgba(0,5,8,.96) 100%),radial-gradient(ellipse at 50% 38%,rgba(18,167,159,.22),rgba(2,18,26,0) 60%),url('/skyring-marine/marine-bg.jpg') center 62%/cover no-repeat;background-color:var(--deep)}
main{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem 0 3rem}
h1{margin:0;font-family:'Century Gothic','Avenir Next',system-ui,sans-serif;font-weight:800;font-size:clamp(2rem,7vw,5rem);letter-spacing:.07em;line-height:1.05;text-shadow:0 2px 18px rgba(0,0,0,.55)}
.m-sky{color:#fff}.m-marine{color:var(--cy)}
.lead{margin:1rem 0 0;font-size:clamp(.72rem,2.4vw,1.1rem);font-weight:500;letter-spacing:.22em;color:var(--ink);text-shadow:0 1px 8px rgba(0,0,0,.6)}
.rule{width:3rem;height:2px;margin:1.6rem auto 2.1rem;background:var(--cy)}
.cta{-webkit-tap-highlight-color:transparent;font:inherit;font-weight:700;letter-spacing:.18em;color:#021a20;background:var(--cy);border:0;border-radius:.55rem;padding:.9rem 2.8rem;min-height:48px;cursor:pointer;transition:background .15s}
.cta:hover{background:#4fe6dc}.cta:disabled{opacity:.55;cursor:default}
.cta-full{width:100%;margin-top:1.1rem}
.cta:focus-visible,.dlg-x:focus-visible,input:focus-visible{outline:3px solid #fff;outline-offset:3px}
.foot{padding:.5rem 0 .25rem;color:var(--mute);font-size:.8rem;letter-spacing:.14em;text-transform:uppercase}
dialog{width:min(24rem,calc(100% - 2rem));max-height:calc(100dvh - 2rem);padding:0;color:var(--ink);background:#03181f;border:1px solid var(--line);border-radius:.7rem;box-shadow:0 12px 48px rgba(0,0,0,.6)}
dialog::backdrop{background:rgba(0,6,10,.6)}
.dlg-head{display:flex;align-items:center;justify-content:space-between;padding:.6rem .6rem .6rem 1.25rem;border-bottom:1px solid var(--line)}
.dlg-head h2{margin:0;font-size:.95rem;letter-spacing:.2em;color:var(--cy)}
.dlg-x{min-width:44px;min-height:44px;font-size:1.7rem;line-height:1;color:var(--ink);background:transparent;border:0;cursor:pointer}
form{padding:1.1rem 1.25rem 1.3rem;text-align:left}
label{display:block;margin:.8rem 0 .25rem;color:var(--mute);font-size:.85rem}
input{width:100%;padding:.65rem .75rem;font:inherit;color:var(--ink);background:#01090d;border:1px solid var(--line);border-radius:.35rem}
.msg{min-height:1.4rem;margin-top:.8rem;font-size:.9rem}.msg.err{color:var(--err)}.msg.ok{color:var(--ok)}.msg.info{color:var(--mute)}
@media (max-width:480px){.cover{background-position:58% center}.cta{padding:.9rem 2.2rem}}
@media (prefers-reduced-motion:reduce){.cta{transition:none}}