:root {
  --bg: #12141a;
  --card: #1b2029;
  --ink: #f3f6f8;
  --muted: #a9b3bd;
  --line: #2d3542;
  --pink: #ff4f8b;
  --pink-deep: #d63a72;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
a[href^="mailto:"] { white-space: nowrap; }
h1, h2, h3 {
  font-family: Sora, "Segoe UI", sans-serif;
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.08;
  margin: 0 0 12px;
}
h1 { font-size: clamp(2.4rem, 5.2vw, 4.2rem); }
h2 { font-size: clamp(1.7rem, 3vw, 2.5rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 12px; }
section[id] { scroll-margin-top: 84px; }
:focus-visible { outline: 3px solid var(--pink); outline-offset: 3px; }
[hidden] { display: none !important; }
body.modal-open { overflow: hidden; }

.wrap { width: min(1080px, calc(100% - 40px)); margin-inline: auto; }
.tag {
  margin: 0 0 10px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--pink);
}

.bar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 24px;
  padding: 14px 4vw;
  background: rgba(18, 20, 26, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  margin-right: auto;
}
.mark { width: 36px; height: 36px; flex: none; }
.brand strong {
  display: block;
  font-family: Sora, sans-serif;
  font-size: 1.15rem;
  letter-spacing: -0.04em;
  line-height: 1;
}
.brand small {
  display: block;
  margin-top: 3px;
  letter-spacing: 0.18em;
  font-size: 0.64rem;
  color: var(--muted);
}
.nav-btn {
  display: none;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  padding: 7px 12px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
header nav { display: flex; flex-wrap: wrap; gap: 8px 16px; }
header nav a { text-decoration: none; font-weight: 500; color: var(--muted); }
header nav a.is-current { color: var(--ink); }
.mail { color: var(--pink); font-weight: 600; text-decoration: none; font-size: 0.92rem; }

.hero, .block { padding: 64px 0; }
.hero-grid, .split, .reach, .form-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 36px;
  align-items: center;
}
.lead { font-size: 1.12rem; color: var(--muted); max-width: 40rem; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--pink);
  color: #1a0b12;
  text-decoration: none;
  border: 0;
  padding: 12px 18px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.btn.quiet {
  background: transparent;
  color: var(--ink);
  box-shadow: inset 0 0 0 1px var(--line);
}

.frame {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 12px;
}
.frame img { width: 100%; height: auto; }
.frame figcaption, figure figcaption {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: min(1080px, calc(100% - 40px));
  margin-inline: auto;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.facts div { padding: 18px 8px; }
.facts div + div { border-left: 1px solid var(--line); padding-left: 18px; }
.facts span {
  display: block;
  font-family: Sora, sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--pink);
}
.facts b { display: block; margin-top: 6px; font-weight: 600; }
.facts a { text-decoration: none; }

.screen { background: #0c0e13; }
.pair, .who, .quad {
  display: grid;
  gap: 14px;
  margin-top: 8px;
}
.pair, .who { grid-template-columns: 1fr 1fr; }
.quad { grid-template-columns: 1fr 1fr; }
.pair article, .who article, .quad article {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 18px;
}
.pair article h3, .who article h3, .quad article h3 { margin-bottom: 8px; }
.pair p, .who p, .quad p { margin: 0; color: var(--muted); }

.steps { list-style: none; margin: 8px 0 0; padding: 0; }
.steps li {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 8px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}
.code {
  font-family: Sora, sans-serif;
  color: var(--pink);
  font-weight: 600;
}

.plain { margin: 8px 0 0; padding: 0; list-style: none; }
.plain li {
  padding: 11px 0 11px 16px;
  border-top: 1px solid var(--line);
  position: relative;
}
.plain li::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--pink);
  position: absolute;
  left: 0;
  top: 1.15rem;
}

.card dt { color: var(--pink); font-size: 0.75rem; letter-spacing: 0.14em; text-transform: uppercase; }
.card dd { margin: 4px 0 16px; font-family: Sora, sans-serif; font-size: 1.25rem; }
.card a { color: var(--pink); }

details { border-top: 1px solid var(--line); padding: 12px 0; }
summary { cursor: pointer; font-weight: 600; }
details p { margin: 8px 0 0; color: var(--muted); }

form {
  display: grid;
  gap: 12px;
  background: var(--card);
  border: 1px solid var(--line);
  padding: 20px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
label { display: grid; gap: 6px; font-size: 0.88rem; font-weight: 600; }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: #0e1116;
  color: var(--ink);
  padding: 11px 12px;
  font: inherit;
  border-radius: 0;
}
textarea { resize: vertical; }
form .btn { justify-self: start; }

.policy .block { padding: 22px 0; border-top: 1px solid var(--line); }

footer { padding: 28px 0 40px; border-top: 1px solid var(--line); }
.foot { display: flex; justify-content: space-between; gap: 18px; align-items: flex-end; }
footer strong { font-family: Sora, sans-serif; font-size: 1.2rem; }
footer p { color: var(--muted); }
.foot-links { display: flex; flex-wrap: wrap; gap: 12px 16px; }
.foot-links a { text-decoration: none; color: var(--muted); }
.foot-links a:hover { color: var(--ink); }

.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.62);
  display: grid;
  place-items: center;
  padding: 20px;
  z-index: 40;
}
.modal-box {
  width: min(420px, 100%);
  background: #f4f6f8;
  color: #12141a;
  padding: 26px;
}
.modal-box p { color: #3d4650; }
.modal-box .btn { background: #12141a; color: #f4f6f8; }

@media (max-width: 860px) {
  .nav-btn { display: inline-flex; }
  header nav { display: none; flex-basis: 100%; flex-direction: column; }
  header nav.is-open { display: flex; }
  .hero-grid, .split, .reach, .form-grid, .pair, .who, .quad, .facts, .form-row { grid-template-columns: 1fr; }
  .facts div + div { border-left: 0; border-top: 1px solid var(--line); padding-left: 8px; }
  .hero, .block { padding: 42px 0; }
  .foot { flex-direction: column; align-items: flex-start; }
}