:root {
    --ink: #eaf3f7;
    --muted: #a9bbc6;
    --deep: #071422;
    --panel: #0c2033;
    --panel-light: #102a40;
    --accent: #64e6c4;
    --accent-2: #6da8ff;
    --line: rgba(255,255,255,.11);
    --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--ink);
    background: var(--deep);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.narrow { max-width: 780px; }
.skip-link { position: fixed; left: 12px; top: -100px; z-index: 99; padding: 10px 14px; background: #fff; color: #000; }
.skip-link:focus { top: 12px; }
.site-header { position: absolute; inset: 0 0 auto; z-index: 5; }
.header-inner { min-height: 84px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; gap: 11px; align-items: center; text-decoration: none; font-weight: 800; letter-spacing: -.02em; }
.brand-mark { display: grid; place-items: center; width: 34px; aspect-ratio: 1; border: 1px solid rgba(100,230,196,.55); border-radius: 10px; color: var(--accent); background: rgba(100,230,196,.08); }
.header-link { color: var(--muted); text-decoration: none; font-size: .94rem; }
.header-link:hover { color: var(--accent); }
.hero { min-height: 760px; display: grid; align-items: center; padding: 145px 0 95px; overflow: hidden; background: radial-gradient(circle at 80% 40%, rgba(58,120,173,.18), transparent 34%), linear-gradient(145deg, #071422 0%, #091a2a 65%, #071422 100%); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(360px, .92fr); gap: 70px; align-items: center; }
.eyebrow, .section-kicker { margin: 0 0 18px; color: var(--accent); font-size: .77rem; font-weight: 800; letter-spacing: .18em; }
h1, h2, h3 { margin-top: 0; line-height: 1.08; letter-spacing: -.035em; }
h1 { margin-bottom: 24px; font-size: clamp(3.4rem, 7vw, 6.7rem); }
h1 span { color: transparent; -webkit-text-stroke: 1px rgba(234,243,247,.72); }
h2 { margin-bottom: 25px; font-size: clamp(2.15rem, 4.5vw, 4rem); }
h3 { font-size: 1.35rem; }
.hero-text { max-width: 670px; margin: 0; color: var(--muted); font-size: clamp(1.08rem, 1.5vw, 1.27rem); }
.hero-actions { margin-top: 38px; display: flex; align-items: center; flex-wrap: wrap; gap: 25px; }
.button { display: inline-flex; justify-content: center; align-items: center; min-height: 51px; padding: 0 23px; border-radius: 8px; background: var(--accent); color: #062018; text-decoration: none; font-weight: 800; box-shadow: 0 10px 35px rgba(100,230,196,.13); }
.button:hover { filter: brightness(1.08); transform: translateY(-1px); }
.text-link { color: var(--ink); text-decoration: none; font-weight: 700; }
.text-link span { color: var(--accent); }
.signal-card { position: relative; aspect-ratio: 1; max-width: 500px; margin-inline: auto; display: grid; place-items: center; }
.signal-card::before { content: ""; position: absolute; inset: 10%; border-radius: 50%; background: radial-gradient(circle, rgba(100,230,196,.11), transparent 62%); filter: blur(4px); }
.signal-core { position: relative; z-index: 2; display: grid; place-items: center; width: 130px; aspect-ratio: 1; border-radius: 50%; color: var(--accent); font-size: 2.8rem; font-weight: 900; background: rgba(12,32,51,.94); border: 1px solid rgba(100,230,196,.7); box-shadow: 0 0 70px rgba(100,230,196,.18), inset 0 0 30px rgba(100,230,196,.08); }
.signal-orbit { position: absolute; border: 1px solid rgba(109,168,255,.25); border-radius: 50%; }
.orbit-one { inset: 18%; }
.orbit-two { inset: 4%; border-style: dashed; }
.signal-label { position: absolute; z-index: 2; padding: 7px 11px; border: 1px solid var(--line); border-radius: 999px; background: rgba(7,20,34,.75); color: var(--muted); font-size: .8rem; backdrop-filter: blur(8px); }
.label-one { top: 10%; left: 43%; }
.label-two { right: 1%; top: 46%; }
.label-three { bottom: 9%; left: 44%; }
.label-four { left: 0; top: 49%; }
.intro, .closing { padding: 125px 0; }
.intro p:last-child, .closing p:last-child { color: var(--muted); font-size: 1.15rem; }
.focus { padding: 120px 0; border-block: 1px solid var(--line); background: #091827; }
.section-heading { max-width: 760px; margin-bottom: 55px; }
.card-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.focus-card { min-height: 280px; padding: 28px; border: 1px solid var(--line); border-radius: 14px; background: linear-gradient(145deg, rgba(16,42,64,.8), rgba(12,32,51,.65)); }
.focus-card > span { display: inline-block; margin-bottom: 70px; color: var(--accent); font: 700 .75rem/1 monospace; }
.focus-card p { margin-bottom: 0; color: var(--muted); font-size: .96rem; }
.closing { text-align: center; }
.site-footer { padding: 30px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: .87rem; }
.footer-inner { display: flex; justify-content: space-between; gap: 20px; }
.footer-inner p { margin: 0; }
.footer-inner a:hover { color: var(--accent); }
.error-page { min-height: 75vh; display: grid; align-items: center; padding: 140px 0 80px; text-align: center; }
.error-page h1 { font-size: clamp(3rem, 8vw, 6rem); }
.error-page .button { margin-top: 22px; }

@media (max-width: 900px) {
    .hero { min-height: auto; }
    .hero-grid { grid-template-columns: 1fr; gap: 35px; }
    .signal-card { width: min(100%, 430px); }
    .card-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
    .container { width: min(calc(100% - 30px), var(--max)); }
    .header-inner { min-height: 70px; }
    .header-link { display: none; }
    .hero { padding: 122px 0 70px; }
    h1 { font-size: clamp(3.1rem, 17vw, 4.5rem); }
    .hero-actions { align-items: stretch; flex-direction: column; gap: 17px; }
    .button { width: 100%; }
    .text-link { text-align: center; }
    .signal-card { margin-top: 10px; }
    .signal-core { width: 105px; font-size: 2.25rem; }
    .signal-label { font-size: .7rem; }
    .intro, .closing, .focus { padding: 82px 0; }
    .card-grid { grid-template-columns: 1fr; }
    .focus-card { min-height: 235px; }
    .focus-card > span { margin-bottom: 47px; }
    .footer-inner { flex-direction: column; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition: none !important; }
}