@font-face {
  font-family: "Press Start 2P";
  src: url("assets/press-start-2p.woff2") format("woff2");
  font-display: swap;
}

:root {
  color-scheme: dark;
  --abyss: #02070b;
  --hull: #07151b;
  --cyan: #00f3ff;
  --green: #39ff14;
  --amber: #ffd451;
  --foam: #ddfbff;
  --muted: #93aeb4;
  --line: rgba(0, 243, 255, .22);
  --pixel: "Press Start 2P", monospace;
  --text: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--abyss); }
body {
  margin: 0;
  min-width: 280px;
  color: var(--foam);
  background:
    radial-gradient(circle at 50% -10%, rgba(0, 243, 255, .16), transparent 34rem),
    linear-gradient(180deg, #041117 0%, var(--abyss) 46%, #000 100%);
  font-family: var(--text);
  line-height: 1.65;
}
body::before {
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  content: "";
  opacity: .13;
  background: repeating-linear-gradient(0deg, transparent 0 3px, #000 4px);
}
a { color: var(--cyan); }
img { display: block; max-width: 100%; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 1rem; top: 1rem; z-index: 40; padding: .8rem; background: #000; }
.shell { width: min(1120px, calc(100% - 36px)); margin-inline: auto; }
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(2, 7, 11, .88);
  backdrop-filter: blur(14px);
}
.topbar .shell { display: flex; align-items: center; justify-content: space-between; min-height: 72px; gap: 20px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--foam); text-decoration: none; }
.brand img { width: 48px; height: 48px; object-fit: contain; filter: drop-shadow(0 0 9px rgba(0,243,255,.34)); }
.brand span { font: 10px/1.5 var(--pixel); }
nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 16px; }
nav a { color: var(--muted); font: 7px/1.5 var(--pixel); text-decoration: none; }
nav a:hover, nav a:focus-visible { color: var(--cyan); }
.hero { min-height: calc(100svh - 72px); display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: clamp(2rem, 6vw, 6rem); padding: 70px 0; }
.eyebrow { color: var(--green); font: 8px/1.6 var(--pixel); letter-spacing: .08em; }
h1, h2, h3 { font-family: var(--pixel); font-weight: 400; }
h1 { max-width: 13ch; margin: 22px 0; color: var(--cyan); font-size: clamp(30px, 6vw, 68px); line-height: 1.35; text-shadow: 0 0 24px rgba(0,243,255,.38); }
h2 { margin: 0 0 28px; font-size: clamp(20px, 3vw, 34px); line-height: 1.45; }
h3 { font-size: 12px; line-height: 1.6; }
.lead { max-width: 58ch; color: #bad0d4; font-size: clamp(17px, 2vw, 21px); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 20px; border: 1px solid var(--cyan); color: #001015; background: var(--cyan); font: 8px/1.5 var(--pixel); text-decoration: none; box-shadow: 0 0 22px rgba(0,243,255,.16); }
.button.secondary { color: var(--cyan); background: transparent; }
.button.disabled { border-color: #43565a; color: #84969a; background: #10181b; cursor: default; box-shadow: none; }
.sonar-window { position: relative; aspect-ratio: 1; overflow: hidden; border: 1px solid var(--line); border-radius: 50%; background: radial-gradient(circle, rgba(0,243,255,.15) 0 1px, transparent 2px 16%, rgba(0,243,255,.1) 16.5%, transparent 17% 32%, rgba(0,243,255,.08) 32.5%, transparent 33% 49%, rgba(0,243,255,.06) 49.5%, transparent 50%), #031017; box-shadow: inset 0 0 70px #000, 0 0 50px rgba(0,243,255,.11); }
.sonar-window::after { position: absolute; inset: 50% 0 0 50%; content: ""; transform-origin: 0 0; background: conic-gradient(from -25deg, rgba(0,243,255,.34), transparent 45deg); animation: sweep 7s linear infinite; }
.sonar-window img { position: absolute; inset: 10%; z-index: 2; width: 80%; filter: drop-shadow(0 0 25px rgba(0,243,255,.5)); }
@keyframes sweep { to { transform: rotate(1turn); } }
.section { padding: 100px 0; border-top: 1px solid var(--line); }
.section-copy { max-width: 700px; color: var(--muted); }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 42px; }
.card { min-height: 220px; padding: 25px; border: 1px solid var(--line); background: linear-gradient(150deg, rgba(0,243,255,.075), rgba(7,21,27,.6)); }
.card strong { display: block; margin-bottom: 12px; color: var(--green); font: 10px/1.5 var(--pixel); }
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; align-items: start; margin-top: 40px; }
.gallery figure { margin: 0; overflow: hidden; border: 1px solid var(--line); background: var(--hull); }
.gallery figure:nth-child(2) { transform: translateY(38px); }
.legal-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.legal-grid a { padding: 20px; border: 1px solid var(--line); color: var(--foam); background: var(--hull); font: 8px/1.6 var(--pixel); text-decoration: none; }
.legal-grid a:hover { border-color: var(--cyan); color: var(--cyan); }
.depth-rail { position: fixed; right: 12px; top: 35%; z-index: 8; color: rgba(0,243,255,.45); font: 6px/2 var(--pixel); writing-mode: vertical-rl; }
footer { padding: 34px 0 50px; border-top: 1px solid var(--line); color: #667c81; font-size: 13px; }

.document { width: min(820px, calc(100% - 36px)); margin: 0 auto; padding: 80px 0 120px; }
.document h1 { max-width: none; font-size: clamp(24px, 5vw, 46px); }
.document h2 { margin-top: 52px; margin-bottom: 14px; color: var(--cyan); font-size: 14px; }
.document h3 { margin-top: 28px; color: var(--green); }
.document p, .document li { color: #b7c8cb; }
.document .notice { padding: 18px; border-left: 3px solid var(--amber); background: rgba(255,212,81,.07); }
.document code { color: var(--amber); }

@media (max-width: 760px) {
  .topbar .shell { align-items: flex-start; padding-block: 14px; }
  .brand span { display: none; }
  nav { gap: 10px; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .sonar-window { width: min(82vw, 430px); margin-inline: auto; grid-row: 1; }
  .cards, .gallery { grid-template-columns: 1fr; }
  .gallery figure:nth-child(2) { transform: none; }
  .legal-grid { grid-template-columns: 1fr 1fr; }
  .depth-rail { display: none; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .sonar-window::after { animation: none; } }