@font-face {
  font-family: "Bricolage Grotesque";
  src: url("fonts/bricolage-grotesque-600.woff2") format("woff2");
  font-weight: 600; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Bricolage Grotesque";
  src: url("fonts/bricolage-grotesque-700.woff2") format("woff2");
  font-weight: 700; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Instrument Sans";
  src: url("fonts/instrument-sans-400.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Instrument Sans";
  src: url("fonts/instrument-sans-500.woff2") format("woff2");
  font-weight: 500; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Spline Sans Mono";
  src: url("fonts/spline-sans-mono-400.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Spline Sans Mono";
  src: url("fonts/spline-sans-mono-500.woff2") format("woff2");
  font-weight: 500; font-style: normal; font-display: swap;
}

:root {
  /* brand palette */
  --brand-cyan: #34C8F6;    /* primary   */
  --brand-purple: #7B5CFF;  /* secondary */
  --brand-violet: #9356F7;  /* accent    */
  --brand-mid: color-mix(in oklab, var(--brand-cyan) 45%, var(--brand-purple));

  --ground: #060A13;
  --surface: #0C1322;
  --surface-2: #101A2E;
  --line: rgba(143, 163, 192, 0.16);
  --line-strong: rgba(143, 163, 192, 0.30);
  --text: #EAF0FA;
  --muted: #8FA3C0;
  --faint: #5E7191;

  --accent: var(--brand-cyan);
  --accent-ink: #052033;
  --link: #6FD4F9;

  --ok: #34D399;

  --glow-a: rgba(52, 200, 246, 0.14);
  --glow-b: rgba(147, 86, 247, 0.13);

  --radius: 14px;
  --font-display: "Bricolage Grotesque", "Avenir Next", system-ui, sans-serif;
  --font-body: "Instrument Sans", system-ui, -apple-system, sans-serif;
  --font-mono: "Spline Sans Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --ground: #F3F7FC;
    --surface: #FFFFFF;
    --surface-2: #EDF3FB;
    --line: rgba(23, 51, 92, 0.13);
    --line-strong: rgba(23, 51, 92, 0.26);
    --text: #0B1526;
    --muted: #45597A;
    --faint: #71829E;
    --link: #0879B8;
    --ok: #0E9F6E;
    --glow-a: rgba(52, 200, 246, 0.20);
    --glow-b: rgba(147, 86, 247, 0.16);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.08;
  letter-spacing: -0.015em;
  text-wrap: balance;
  margin: 0;
}
p { margin: 0; }
a { color: var(--link); text-decoration: none; }
a:focus-visible, summary:focus-visible {
  outline: 2px solid var(--brand-purple);
  outline-offset: 3px;
  border-radius: 4px;
}
.wrap { max-width: 1140px; margin: 0 auto; padding: 0 24px; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 2px;
  background: linear-gradient(90deg, var(--brand-cyan), var(--brand-violet));
  border-radius: 2px;
}

/* ---------- nav ---------- */
header.site {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--ground) 82%, transparent);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; gap: 28px;
  height: 66px;
}
.logo {
  display: flex; align-items: center; gap: 9px;
  font-family: var(--font-display);
  font-weight: 700; font-size: 20px;
  color: var(--text);
  margin-right: auto;
}
.logo img { display: block; width: 30px; height: 30px; }
.nav a.item { color: var(--muted); font-weight: 500; font-size: 15px; transition: color .15s; }
.nav a.item:hover { color: var(--text); }
@media (max-width: 760px) { .nav a.item { display: none; } }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-body);
  font-weight: 600; font-size: 15px;
  padding: 11px 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s, box-shadow .15s, background .15s;
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 24px -6px rgba(52, 200, 246, .55); }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}
.btn-ghost:hover { border-color: var(--brand-purple); }
.btn-sm { padding: 8px 16px; font-size: 14px; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 72px;
}
.hero-bg {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(560px 420px at 12% 0%, var(--glow-a), transparent 70%),
    radial-gradient(640px 480px at 88% 22%, var(--glow-b), transparent 70%);
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: 56px;
  align-items: center;
}
@media (max-width: 920px) { .hero-grid { grid-template-columns: 1fr; } }

.hero h1 {
  font-size: clamp(40px, 5.4vw, 62px);
  font-weight: 700;
  margin: 22px 0 18px;
}
.hero h1 .grad {
  background: linear-gradient(92deg, var(--brand-cyan) 0%, var(--brand-purple) 60%, var(--brand-violet) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero .lede {
  font-size: 19px;
  color: var(--muted);
  max-width: 30em;
  margin-bottom: 32px;
}
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }

.standards {
  margin-top: 44px;
  display: flex; flex-wrap: wrap; gap: 8px;
  align-items: center;
}
.standards .lbl { font-size: 13px; color: var(--faint); margin-right: 6px; }
.chip {
  font-family: var(--font-mono);
  font-size: 12px; font-weight: 500;
  letter-spacing: 0.04em;
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  background: color-mix(in srgb, var(--surface) 60%, transparent);
}

/* ---------- ERN card ---------- */
.ern {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 30px 80px -30px rgba(2, 8, 23, 0.7);
  overflow: hidden;
  margin: 0;
}
.ern::before {
  content: "";
  position: absolute; inset: 0 0 auto 0; height: 3px;
  background: linear-gradient(90deg, var(--brand-cyan), var(--brand-purple), var(--brand-violet));
}
.ern-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}
.ern-head .title { font-weight: 600; font-size: 15px; }
.ern-head .sub { font-size: 12.5px; color: var(--faint); font-family: var(--font-mono); }
.ern-body {
  padding: 14px 20px 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 2.15;
  overflow-x: auto;
}
.ln {
  display: flex; align-items: baseline; gap: 12px;
  white-space: nowrap;
  opacity: 0;
  transform: translateY(4px);
  animation: lnin .45s ease forwards;
}
.ln .tag { color: var(--link); }
.ln .val { color: var(--text); }
.ln .tick {
  margin-left: auto;
  font-size: 12px;
  color: var(--ok);
  opacity: 0;
  animation: lnin .3s ease forwards;
}
.ln:nth-child(1) { animation-delay: .3s; }  .ln:nth-child(1) .tick { animation-delay: .9s; }
.ln:nth-child(2) { animation-delay: .55s; } .ln:nth-child(2) .tick { animation-delay: 1.15s; }
.ln:nth-child(3) { animation-delay: .8s; }  .ln:nth-child(3) .tick { animation-delay: 1.4s; }
.ln:nth-child(4) { animation-delay: 1.05s; }.ln:nth-child(4) .tick { animation-delay: 1.65s; }
.ln:nth-child(5) { animation-delay: 1.3s; } .ln:nth-child(5) .tick { animation-delay: 1.9s; }
@keyframes lnin { to { opacity: 1; transform: translateY(0); } }

.ern-status {
  display: flex; align-items: center; gap: 10px;
  margin: 10px 20px 18px;
  padding: 11px 14px;
  border-radius: 10px;
  font-size: 13.5px; font-weight: 500;
  background: color-mix(in srgb, var(--ok) 12%, transparent);
  color: var(--ok);
  border: 1px solid color-mix(in srgb, var(--ok) 30%, transparent);
  opacity: 0;
  animation: lnin .5s ease 2.3s forwards;
}
.ern-status .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); flex: none; }
.ern-foot {
  display: flex; gap: 8px; flex-wrap: wrap;
  padding: 0 20px 20px;
}
.recipient {
  font-size: 12.5px; font-family: var(--font-mono);
  padding: 4px 10px; border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  opacity: 0;
  animation: lnin .4s ease forwards;
}
.recipient:nth-child(1) { animation-delay: 2.7s; }
.recipient:nth-child(2) { animation-delay: 2.85s; }
.recipient:nth-child(3) { animation-delay: 3.0s; }
.recipient b { color: var(--brand-violet); font-weight: 500; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .ln, .ln .tick, .ern-status, .recipient { animation: none; opacity: 1; transform: none; }
  .btn-primary:hover { transform: none; }
}

/* ---------- sections ---------- */
section.block { padding: 84px 0; border-top: 1px solid var(--line); }
.sec-head { max-width: 640px; margin-bottom: 48px; }
.sec-head h2 { font-size: clamp(28px, 3.4vw, 40px); font-weight: 700; margin: 16px 0 12px; }
.sec-head p { color: var(--muted); font-size: 17.5px; }

/* benefits */
.benefits {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 860px) { .benefits { grid-template-columns: 1fr; } }
.benefit {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
}
.benefit .glyph {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: grid; place-items: center;
  margin-bottom: 18px;
}
.benefit h3 { font-size: 20px; font-weight: 600; margin-bottom: 10px; }
.benefit p { color: var(--muted); font-size: 15.5px; }

/* features */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 980px) { .features { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .features { grid-template-columns: 1fr; } }
.feature {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  display: flex; flex-direction: column; gap: 12px;
  transition: border-color .2s, transform .2s;
}
.feature:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.feature h3 { font-size: 17.5px; font-weight: 600; }
.feature p { color: var(--muted); font-size: 15px; flex: 1; }
.feature .chips { display: flex; gap: 6px; flex-wrap: wrap; }

/* steps — the spectrum rail */
.steps { position: relative; }
.rail {
  position: absolute;
  left: 27px; top: 20px; bottom: 20px;
  width: 3px; border-radius: 3px;
  background: linear-gradient(180deg, var(--brand-cyan), var(--brand-purple), var(--brand-violet));
}
.step {
  position: relative;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 22px;
  padding: 20px 0;
}
.step .num {
  width: 56px; height: 56px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--font-display);
  font-weight: 700; font-size: 20px;
  color: var(--accent-ink);
  border: 4px solid var(--ground);
  position: relative; z-index: 1;
}
.step:nth-child(2) .num { background: var(--brand-cyan); }
.step:nth-child(3) .num { background: var(--brand-mid); color: #fff; }
.step:nth-child(4) .num { background: var(--brand-purple); color: #fff; }
.step:nth-child(5) .num { background: var(--brand-violet); color: #fff; }
.step h3 { font-size: 20px; font-weight: 600; margin: 6px 0 6px; }
.step p { color: var(--muted); font-size: 15.5px; max-width: 34em; }
.steps-cta { margin-top: 36px; padding-left: 78px; }
@media (max-width: 640px) {
  .rail { left: 21px; }
  .step { grid-template-columns: 44px 1fr; gap: 16px; }
  .step .num { width: 44px; height: 44px; font-size: 17px; }
  .steps-cta { padding-left: 60px; }
}

/* faq */
.faq-list { max-width: 760px; }
details.qa {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  margin-bottom: 12px;
  overflow: hidden;
}
details.qa summary {
  list-style: none;
  cursor: pointer;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 18px 22px;
  font-weight: 600; font-size: 16.5px;
}
details.qa summary::-webkit-details-marker { display: none; }
details.qa summary .ind {
  flex: none;
  width: 26px; height: 26px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  display: grid; place-items: center;
  color: var(--muted);
  font-size: 15px; font-weight: 500;
  transition: transform .2s, background .2s, color .2s;
}
details.qa[open] summary .ind {
  transform: rotate(45deg);
  background: var(--brand-purple);
  border-color: var(--brand-purple);
  color: #fff;
}
details.qa .ans { padding: 0 22px 20px; color: var(--muted); font-size: 15.5px; max-width: 42em; }

/* cta */
.cta-panel {
  position: relative;
  overflow: hidden;
  border-radius: 20px;
  border: 1px solid var(--line);
  background:
    radial-gradient(520px 300px at 18% 120%, var(--glow-a), transparent 70%),
    radial-gradient(520px 300px at 85% -30%, var(--glow-b), transparent 70%),
    var(--surface);
  padding: 72px 32px;
  text-align: center;
}
.cta-panel h2 { font-size: clamp(28px, 3.6vw, 42px); font-weight: 700; margin-bottom: 14px; }
.cta-panel p { color: var(--muted); font-size: 17.5px; max-width: 34em; margin: 0 auto 30px; }

/* footer */
footer.site {
  border-top: 1px solid var(--line);
  padding: 56px 0 40px;
}
.foot-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
}
@media (max-width: 720px) { .foot-grid { grid-template-columns: 1fr; } }
.foot-grid .tagline { color: var(--muted); font-size: 15px; max-width: 26em; margin-top: 12px; }
.foot-grid h3 {
  font-family: var(--font-mono);
  font-size: 12px; font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 14px;
}
.foot-grid ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 9px; }
.foot-grid ul a { color: var(--muted); font-size: 15px; }
.foot-grid ul a:hover { color: var(--text); }
.foot-social {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px;
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
}
.foot-social:hover { color: var(--text); border-color: var(--faint); }
.foot-base {
  margin-top: 44px; padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  color: var(--faint); font-size: 13.5px;
}

/* ---------- subpage hero ---------- */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: 72px 0 56px;
}
.page-hero h1 {
  font-size: clamp(34px, 4.4vw, 52px);
  font-weight: 700;
  margin: 20px 0 14px;
}
.page-hero .lede {
  font-size: 18px;
  color: var(--muted);
  max-width: 34em;
}

/* ---------- contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
  gap: 20px;
  align-items: start;
}
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }
.channels { display: flex; flex-direction: column; gap: 20px; }
.channel-note { color: var(--faint); font-size: 13.5px; }

.form-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
}
.form-card h2 { font-size: 22px; font-weight: 600; margin-bottom: 6px; }
.form-card .hint { color: var(--muted); font-size: 15px; margin-bottom: 22px; }
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-grid .full { grid-column: 1 / -1; }
@media (max-width: 560px) { .form-grid { grid-template-columns: 1fr; } .form-grid .full { grid-column: auto; } }
.field { display: flex; flex-direction: column; gap: 7px; }
.field label { font-size: 14px; font-weight: 500; color: var(--muted); }
.field input, .field select, .field textarea {
  font-family: var(--font-body);
  font-size: 15.5px;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px 14px;
  width: 100%;
  transition: border-color .15s;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--brand-cyan);
}
.field select { appearance: none; -webkit-appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 20px) 55%, calc(100% - 15px) 55%; background-size: 5px 5px; background-repeat: no-repeat; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
#form-status { margin-top: 14px; font-size: 14px; color: var(--muted); }

/* ---------- prose (privacy policy) ---------- */
.prose { max-width: 720px; }
.prose h2 { font-size: 22px; font-weight: 600; margin: 40px 0 12px; }
.prose h3 { font-size: 17px; font-weight: 600; margin: 24px 0 8px; }
.prose p { color: var(--muted); margin: 0 0 14px; }
.prose ul { color: var(--muted); margin: 0 0 14px; padding-left: 22px; display: flex; flex-direction: column; gap: 6px; }

.grad-text {
  background: linear-gradient(92deg, var(--brand-cyan) 0%, var(--brand-purple) 60%, var(--brand-violet) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.optional { font-weight: 400; color: var(--faint); }