:root {
  --bg: #0A131B; --bg-2: #0E1923; --surface: #13222E; --line: #243644; --steel: #2C3E4C;
  --fg: #E9EFF3; --muted: #9FB2BF; --ember: #FF6B2C; --teal: #36D1C4; --on-ember: #0A131B;
  --danger: #FF8A7A;
  --glow-ember: rgba(255, 107, 44, 0.28); --glow-teal: rgba(54, 209, 196, 0.16);
  --font-display: 'Big Shoulders Display', 'Arial Narrow', Impact, sans-serif;
  --font-body: 'Instrument Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #F2F5F6; --bg-2: #E8EDEF; --surface: #FFFFFF; --line: #CCD6DC; --steel: #C3CFD6;
  --fg: #0F1B24; --muted: #455865; --ember: #C2410C; --teal: #0A7C77; --on-ember: #FFFFFF; --danger: #B42318;
  --glow-ember: rgba(194, 65, 12, 0.18); --glow-teal: rgba(10, 124, 119, 0.12);
  color-scheme: light;
}

.theme-toggle { display: inline-flex; align-items: center; gap: 8px; min-height: 36px; padding: 0 12px; background: transparent; border: 1px solid var(--steel); border-radius: 0; color: var(--muted); font: 500 13px var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; cursor: pointer; }
.theme-toggle:hover { color: var(--fg); border-color: var(--muted); }
.theme-toggle:focus-visible { outline: 2px solid var(--ember); outline-offset: 4px; }
.theme-toggle svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.tools { display: flex; align-items: center; gap: 10px; }
.lang-switch { display: inline-flex; align-items: center; justify-content: center; min-height: 36px; min-width: 44px; padding: 0 10px; border: 1px solid var(--steel); color: var(--muted); font: 500 13px var(--font-mono); letter-spacing: 0.08em; text-decoration: none; }
.lang-switch:hover { color: var(--fg); border-color: var(--muted); }
.lang-switch:focus-visible { outline: 2px solid var(--ember); outline-offset: 4px; }
.top .nav { margin-left: auto; }
@media (max-width: 700px) { .top .tools { order: 2; margin-left: auto; } .top .nav { order: 3; flex-basis: 100%; margin-left: 0; } }
* { box-sizing: border-box; }
html { background: var(--bg); padding-top: env(safe-area-inset-top, 0px); padding-bottom: env(safe-area-inset-bottom, 0px); }
body { margin: 0; background: var(--bg); color: var(--fg); font: 400 17px/1.6 var(--font-body); -webkit-text-size-adjust: 100%; }
a { color: inherit; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--ember); outline-offset: 4px; }

.wrap { width: 100%; max-width: 1180px; margin-inline: auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }

.top { padding-block: 22px; }
.top .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 32px; }
.mark { font: 400 36px/1 var(--font-display); letter-spacing: 0.01em; text-decoration: none; }
.mark b { font-weight: 800; color: var(--ember); }
.nav { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 28px; }
.nav a { font: 500 13px var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; text-decoration: none; color: var(--muted); padding-block: 6px; }
.nav a:hover { color: var(--fg); }

.page-head { padding-block: 48px 56px; background: radial-gradient(55% 70% at 6% 0%, var(--glow-teal), transparent 72%), radial-gradient(45% 80% at 100% 100%, var(--glow-ember), transparent 72%); }
.kicker { margin: 0 0 14px; font: 500 13px var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ember); }
h1 { margin: 0; font: 800 clamp(42px, 8vw, 92px)/0.98 var(--font-display); text-transform: uppercase; text-wrap: balance; overflow-wrap: break-word; }
h1 span { color: var(--ember); }
.lead { margin: 20px 0 0; max-width: 36em; color: var(--muted); }

.contact { padding-block: 64px 96px; border-top: 1px solid var(--line); }
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 32px; max-width: 820px; }

.card { background: var(--surface); border: 1px solid var(--line); padding: 32px; }
.field { margin-bottom: 22px; }
label, .label { display: block; margin-bottom: 8px; font: 500 12px/1.4 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--teal); }
input[type="text"], input[type="email"], select, textarea {
  width: 100%; min-height: 48px; padding: 12px 14px; background: var(--bg); color: var(--fg);
  border: 1px solid var(--steel); border-radius: 0; font: 400 16px/1.5 var(--font-body);
  appearance: none; -webkit-appearance: none;
}
select { background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 20px) 50%, calc(100% - 14px) 50%; background-size: 6px 6px; background-repeat: no-repeat; padding-right: 40px; }
textarea { min-height: 180px; resize: vertical; }
input:hover, select:hover, textarea:hover { border-color: var(--muted); }
input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 2px solid var(--ember); outline-offset: 1px; border-color: var(--ember); }
.field.has-error input, .field.has-error select, .field.has-error textarea { border-color: var(--danger); }
.hint { margin: 6px 0 0; font-size: 13px; color: var(--muted); }
.err { margin: 6px 0 0; font-size: 14px; color: var(--danger); }
.counter { text-align: right; font: 500 12px var(--font-mono); color: var(--muted); margin-top: 6px; }

.check-row { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 22px; }
.check-row input { flex: none; width: 22px; height: 22px; margin: 2px 0 0; accent-color: var(--ember); }
.check-row label { margin: 0; font: 400 14px/1.55 var(--font-body); letter-spacing: 0; text-transform: none; color: var(--muted); }
.check-row a { color: var(--fg); text-underline-offset: 3px; }

.hp { position: absolute; left: -10000px; top: auto; width: 1px; height: 1px; overflow: hidden; }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 26px; border: 0; background: var(--ember); color: var(--on-ember); font: 600 16px var(--font-body); text-decoration: none; cursor: pointer; }
.btn:hover:not(:disabled) { filter: brightness(1.08); }
.btn:disabled { background: var(--steel); color: var(--muted); cursor: not-allowed; }

.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 24px; }
.check { margin: 0; display: flex; align-items: center; gap: 10px; font: 500 12px/1.4 var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.check::before { content: ""; flex: none; width: 10px; height: 10px; background: var(--steel); }
.check[data-state="pending"]::before { background: var(--ember); animation: pulse 1s ease-in-out infinite; }
.check[data-state="ok"]::before { background: var(--teal); }
.check[data-state="error"] { color: var(--danger); text-transform: none; letter-spacing: 0; }
.check[data-state="error"]::before { background: var(--danger); }
@keyframes pulse { 50% { opacity: 0.25; } }
@media (prefers-reduced-motion: reduce) { .check[data-state="pending"]::before { animation: none; } }

.alert { margin-bottom: 24px; padding: 16px 18px; border: 1px solid var(--danger); border-left-width: 4px; background: var(--bg); color: var(--fg); font-size: 15px; }
.alert p { margin: 0; }
.alert ul { margin: 8px 0 0; padding-left: 20px; color: var(--muted); }
.noscript { margin: 0 0 24px; padding: 16px 18px; border: 1px solid var(--ember); background: var(--bg); font-size: 15px; }

.done { text-align: left; }
.done h2 { margin: 0 0 12px; font: 800 40px/1.05 var(--font-display); text-transform: uppercase; }
.done p { margin: 0 0 24px; color: var(--muted); }

.tips { padding: 28px 32px; background: linear-gradient(135deg, var(--glow-ember), transparent 70%), var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--ember); }
.tips h2 { margin: 0; font: 800 clamp(32px, 6vw, 48px)/1.02 var(--font-display); text-transform: uppercase; }
.tips-intro { margin: 10px 0 0; color: var(--muted); }
.tips ol { list-style: none; counter-reset: tip; margin: 22px 0 0; padding: 0; display: grid; gap: 16px; }
.tips li { counter-increment: tip; position: relative; padding-left: 52px; font-size: 16px; line-height: 1.55; color: var(--fg); }
.tips li::before { content: counter(tip, decimal-leading-zero); position: absolute; left: 0; top: 1px; font: 500 14px var(--font-mono); letter-spacing: 0.08em; color: var(--ember); }
.tips li strong { display: block; font: 500 12px/1.4 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--teal); margin-bottom: 2px; }

.foot { background: var(--bg-2); border-top: 1px solid var(--line); padding-block: 26px; font-size: 13px; line-height: 1.7; color: var(--muted); }
.foot .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 40px; }
.foot .who { color: var(--fg); }
.foot .legal { display: flex; gap: 18px; }
.foot .legal a { color: var(--muted); text-underline-offset: 3px; }
.foot .legal a:hover { color: var(--fg); }

@media (max-width: 900px) {
  .contact { padding-block: 48px 72px; }
  .page-head { padding-block: 32px 40px; }
}
@media (max-width: 480px) { body { font-size: 16px; } .mark { font-size: 30px; } .card, .tips { padding: 22px 18px; } .btn { width: 100%; } }