/* atlasunlimited.io (next): portal concept. Palette and type of the live .io "builder's cut". No web fonts, no scripts. */
:root{--bg:#05070a;--panel:#0b1119;--ink:#dcefe7;--muted:#8fa0b2;--line:#1d2a3b;--accent:#7ce3c4;--accent2:#6fb3ff;--warn:#ffd479;
  --mono:ui-monospace,'SF Mono',SFMono-Regular,Menlo,Consolas,'Liberation Mono',monospace}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:400 15px/1.65 var(--mono);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit}
:focus-visible{outline:3px solid var(--warn);outline-offset:4px}
.skip-link{position:absolute;z-index:100;top:-60px;left:1rem;background:#fff;color:#05070a;padding:.6rem 1rem}.skip-link:focus{top:1rem}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.grid-bg{position:fixed;inset:0;z-index:0;opacity:.45;pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:40px 40px;
  -webkit-mask-image:radial-gradient(ellipse at 50% 18%,#000 12%,transparent 68%);mask-image:radial-gradient(ellipse at 50% 18%,#000 12%,transparent 68%)}
.wrap{position:relative;z-index:1;width:min(1040px,100%);margin:0 auto;padding:0 clamp(16px,4vw,32px)}
.top{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding:24px 0;font-size:13px}
.mark{text-decoration:none;color:var(--muted);letter-spacing:.05em}
.mark b{color:var(--ink);font-weight:600}
.mark .io{color:var(--accent)}
.mark .phase{margin-left:8px;padding:2px 8px;border:1px solid var(--line);border-radius:999px;font-size:11px;color:var(--warn)}
.navlink{color:var(--muted);text-decoration:none}.navlink:hover{color:var(--accent)}
.hero{padding:8vh 0 5vh}
.prompt{margin:0 0 16px;color:var(--accent);font-size:13px;letter-spacing:.04em}
.prompt .path{color:var(--accent2)}
h1{font-size:clamp(32px,6vw,58px);line-height:1.06;letter-spacing:-.01em;font-weight:700;margin:0 0 12px}
h1 .g{color:var(--accent)}
.sub{color:var(--muted);font-size:clamp(14px,1.8vw,16px);max-width:640px;margin:16px 0 0}
.doors{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;padding:12px 0 30px}
.door{position:relative;background:linear-gradient(180deg,rgba(15,24,36,.92),rgba(9,14,21,.92));border:1px solid var(--line);border-radius:14px;padding:22px 20px 20px;display:flex;flex-direction:column}
.door-arch{position:relative;height:150px;margin-bottom:18px;border:1px solid #2a3b52;border-bottom:0;border-radius:999px 999px 0 0/150px 150px 0 0;
  background:radial-gradient(60% 55% at 50% 100%,rgba(124,227,196,.16),transparent 70%),repeating-linear-gradient(90deg,transparent 0 13px,rgba(124,227,196,.05) 13px 14px),#070c12;overflow:hidden}
.door-arch::after{content:"";position:absolute;left:50%;top:18%;bottom:0;width:1px;background:linear-gradient(180deg,transparent,rgba(124,227,196,.6))}
.lock{position:absolute;left:50%;top:52%;width:22px;height:18px;transform:translate(-50%,-50%);border:2px solid var(--accent);border-radius:3px;background:#070c12;box-shadow:0 0 18px rgba(124,227,196,.35)}
.lock::before{content:"";position:absolute;left:50%;bottom:100%;width:12px;height:11px;transform:translateX(-50%);border:2px solid var(--accent);border-bottom:0;border-radius:8px 8px 0 0}
.lock::after{content:"";position:absolute;left:50%;top:4px;width:3px;height:6px;transform:translateX(-50%);background:var(--accent);border-radius:2px}
.door-k{margin:0;color:var(--accent2);font-size:12px;letter-spacing:.08em}
.door h2{margin:6px 0 8px;font-size:21px;letter-spacing:-.01em}
.door h2 .muted{color:var(--muted);font-weight:400;font-size:.8em}
.door-what{margin:0 0 16px;color:var(--muted);font-size:13.5px;flex:1}
.door-state{display:flex;align-items:center;gap:8px;margin:0 0 14px;padding:9px 11px;border:1px dashed #33465e;border-radius:8px;color:var(--warn);font-size:12.5px}
.dot{flex:none;width:7px;height:7px;border-radius:50%;background:var(--warn)}
.door-link{align-self:flex-start;color:var(--accent);font-size:13px;text-decoration:underline;text-underline-offset:4px}
.door-link:hover{color:var(--ink)}
.door-link-static{margin:0;color:var(--muted);text-decoration:none}
.door:hover{border-color:#2f4560}
.how{padding:30px 0 20px}
.head{color:var(--muted);font-size:13px;margin:0 0 16px}
.head b{color:var(--ink)}
.head .m{color:var(--muted)}
.row{display:grid;grid-template-columns:120px 1fr;gap:16px;padding:14px 0;border-top:1px solid var(--line);font-size:13.5px}
.row .k{color:var(--accent)}
.row .v{color:var(--muted)}
.row .v b{color:var(--ink);font-weight:600}
.note{margin:18px 0 0;padding:14px 16px;border-left:2px solid var(--warn);background:rgba(255,212,121,.05);color:#c3cdd8;font-size:13px;max-width:760px}
.foot{margin-top:40px;padding:34px 0 60px;border-top:1px solid var(--line);color:var(--muted);font-size:12.5px}
.foot a{color:var(--accent)}
.fam{display:flex;flex-wrap:wrap;gap:10px 20px;margin-bottom:12px}
.fam a{color:var(--muted);text-decoration:none}.fam a:hover{color:var(--ink);text-decoration:underline}
.fam .here{color:var(--accent)}
@media(max-width:820px){.doors{grid-template-columns:1fr}.door-arch{height:120px;border-radius:999px 999px 0 0/120px 120px 0 0}}
@media(max-width:600px){.row{grid-template-columns:1fr;gap:4px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* SEO-2 2026-09-29: the ATLAS Unlimited family, same three entries and anchors on .ai, .world and .io */
.fam{display:block}.fam-title{margin:0 0 8px;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}.fam-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:4px 24px}.fam-list li{margin:0}.fam-list a,.fam-list .here{display:block;min-height:44px;padding:6px 0;line-height:1.45}.fam-list strong{display:block;color:var(--ink);font-weight:600}.fam-list .here strong{color:var(--accent)}.fam-list em{font-style:normal}