:root {
	--top: #dfe9f6;
	--bottom: #f7f9fc;
	--ink: #0b1a2e;
	--muted: #4d6079;
	--glass: rgba(255, 255, 255, 0.62);
	--glass-line: rgba(62, 105, 170, 0.18);
	--brand: #3e69aa;
	--ring: rgba(62, 105, 170, 0.22);
	--btn-ink: #ffffff;
	--field: rgba(255, 255, 255, 0.85);
	--danger: #b42318;
	--ok: #1f7a4d;
}
@media (prefers-color-scheme: dark) {
	:root {
		--top: #0d2547;
		--bottom: #040a14;
		--ink: #e8f0fb;
		--muted: #9fb3cf;
		--glass: rgba(255, 255, 255, 0.05);
		--glass-line: rgba(160, 196, 245, 0.16);
		--brand: #82aae6;
		--ring: rgba(130, 170, 230, 0.2);
		--btn-ink: #061021;
		--field: rgba(255, 255, 255, 0.06);
		--danger: #ff8a80;
		--ok: #6fd3a0;
	}
}
* { box-sizing: border-box; }
html { background: var(--bottom); scroll-padding-top: 96px; }
body {
	margin: 0;
	min-height: 100vh;
	color: var(--ink);
	font: 16px/1.6 "Inter", system-ui, sans-serif;
	background: linear-gradient(180deg, var(--top) 0, var(--bottom) 1100px) no-repeat, var(--bottom);
}
a { color: inherit; text-decoration: none; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 12px 20px 0; }

.gtc-logo { display: inline-flex; align-items: center; gap: 0.32em; font-family: "Jost", "Futura", sans-serif; font-size: 40px; line-height: 1; }
.gtc-logo .mark { font-weight: 800; color: var(--brand); letter-spacing: -0.03em; }
.gtc-logo .word { font-weight: 700; font-size: 0.27em; line-height: 1.05; color: var(--ink); }

.nav { position: sticky; top: 12px; z-index: 5; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 12px 10px 20px; border-radius: 999px; background: var(--glass); border: 1px solid var(--glass-line); backdrop-filter: blur(16px) saturate(140%); -webkit-backdrop-filter: blur(16px) saturate(140%); }
.nav .links { display: flex; align-items: center; gap: 4px; }
.nav .links a { padding: 8px 14px; border-radius: 999px; color: var(--muted); font-weight: 500; font-size: 15px; }
.nav .links a:hover { color: var(--ink); }
.btn { display: inline-block; padding: 10px 20px; border-radius: 999px; border: none; background: var(--brand); color: var(--btn-ink) !important; font: 600 15px/1.4 "Inter", sans-serif; white-space: nowrap; cursor: pointer; }
.btn:disabled { opacity: 0.6; cursor: progress; }

.hero { position: relative; display: grid; grid-template-columns: 1.2fr 1fr; align-items: center; gap: 40px; padding: 72px 0 88px; }
.hero .eyebrow { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--brand); margin-bottom: 18px; }
.hero h1 { font: 700 clamp(40px, 5.6vw, 68px)/1.02 "Jost", sans-serif; letter-spacing: -0.02em; margin: 0 0 20px; }
.hero h1 em { font-style: normal; color: var(--brand); }
.hero p { font-size: 18px; color: var(--muted); max-width: 520px; margin: 0 0 30px; }
.sonar { position: relative; aspect-ratio: 1; width: 100%; max-width: 420px; justify-self: center; }
.sonar svg { width: 100%; height: 100%; display: block; }
.sonar .sweep { transform-origin: 200px 200px; animation: sweep 6s linear infinite; }
@keyframes sweep { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .sonar .sweep { animation: none; } }

section { padding: 48px 0; }
.head { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
.head h2 { font: 700 36px/1.1 "Jost", sans-serif; margin: 0; letter-spacing: -0.01em; }
.head span { color: var(--muted); font-size: 14px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.glass { background: var(--glass); border: 1px solid var(--glass-line); border-radius: 20px; padding: 24px; backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); display: flex; flex-direction: column; transition: transform 0.15s ease, border-color 0.15s ease; }
a.glass:hover { transform: translateY(-3px); border-color: var(--brand); }
.glass .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--brand); box-shadow: 0 0 0 6px var(--ring); margin-bottom: 18px; }
.glass .k { font-size: 12px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--brand); margin-bottom: 10px; }
.glass h3 { font: 700 21px/1.2 "Jost", sans-serif; margin: 0 0 8px; }
.glass p { margin: 0; color: var(--muted); font-size: 15px; flex: 1; }
.glass .go { margin-top: 18px; font-weight: 600; font-size: 14px; color: var(--brand); }
.soon { display: inline-block; margin-left: 8px; padding: 2px 9px; border-radius: 999px; border: 1px solid var(--brand); color: var(--brand); font: 600 11px/1.6 "Inter", sans-serif; letter-spacing: 0.04em; text-transform: uppercase; vertical-align: middle; }

.contact { display: grid; grid-template-columns: 1fr 1.4fr; gap: 32px; align-items: start; }
.contact .intro h2 { font: 700 36px/1.1 "Jost", sans-serif; margin: 0 0 12px; letter-spacing: -0.01em; }
.contact .intro p { margin: 0; color: var(--muted); }
.form { display: grid; gap: 14px; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form label { display: grid; gap: 6px; font-size: 14px; font-weight: 500; }
.form input, .form textarea { width: 100%; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--glass-line); background: var(--field); color: var(--ink); font: 15px/1.5 "Inter", sans-serif; }
.form input:focus, .form textarea:focus { outline: 2px solid var(--brand); outline-offset: 1px; border-color: transparent; }
.form textarea { min-height: 140px; resize: vertical; }
.form .actions { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; }
.form .status { margin: 0; font-size: 14px; }
.form .status.error { color: var(--danger); }
.form .status.ok { color: var(--ok); }

footer { margin-top: 40px; padding: 28px 0 48px; border-top: 1px solid var(--glass-line); display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; color: var(--muted); font-size: 14px; }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 22px; }
footer a:hover { color: var(--ink); }

.legal { max-width: 760px; margin: 56px auto 0; padding: 40px; }
.legal h1 { font: 700 clamp(34px, 5vw, 48px)/1.1 "Jost", sans-serif; margin: 0 0 8px; letter-spacing: -0.01em; }
.legal h2 { font: 700 22px/1.25 "Jost", sans-serif; margin: 32px 0 10px; }
.legal p, .legal li { color: var(--ink); font-size: 16px; }
.legal p { margin: 0 0 14px; }
.legal ul { margin: 0 0 14px; padding-left: 22px; }
.legal a { color: var(--brand); text-decoration: underline; text-underline-offset: 3px; }

.notfound { text-align: center; padding: 120px 0 80px; }
.notfound h1 { font: 800 clamp(64px, 12vw, 120px)/1 "Jost", sans-serif; color: var(--brand); margin: 0 0 12px; }
.notfound p { color: var(--muted); margin: 0 0 28px; }

@media (max-width: 820px) {
	.hero { grid-template-columns: 1fr; padding: 48px 0 56px; }
	.sonar { max-width: 280px; order: -1; }
	.nav .links a:not(.btn) { display: none; }
	.contact { grid-template-columns: 1fr; }
	.legal { padding: 24px; margin-top: 32px; }
}
@media (max-width: 560px) {
	.form .row { grid-template-columns: 1fr; }
}
.form .optional { color: var(--muted); font-weight: 400; }