:root {
  --navy: #0a1830;
  --navy-2: #0f2242;
  --navy-line: rgba(255, 255, 255, 0.08);
  --bg: #f7f9fc;
  --surface: #ffffff;
  --ink: #0f1f3a;
  --ink-soft: #4a5a75;
  --ink-mute: #7a879c;
  --line: #e3e9f2;
  --blue: #0b5fc4;
  --blue-hover: #0a52a9;
  --blue-light: #8fc2ff;
  --blue-tint: #eaf2fd;
  --on-dark: #f4f7fc;
  --on-dark-soft: #b7c3d8;
  --radius: 16px;
  --shadow: 0 1px 2px rgba(15, 31, 58, 0.04), 0 8px 24px rgba(15, 31, 58, 0.06);
  --max: 1160px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.15; letter-spacing: -0.02em; font-weight: 600; }
p { margin: 0; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue);
}
.dark .eyebrow { color: var(--on-dark-soft); }
.grad {
  white-space: nowrap;
  background: linear-gradient(90deg, #2f80e0 0%, var(--blue-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s, transform 0.2s;
  font-family: inherit;
  white-space: nowrap;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-hover); transform: translateY(-1px); }
.btn-ghost { color: var(--on-dark); border-color: rgba(255, 255, 255, 0.22); }
.btn-ghost:hover { border-color: rgba(255, 255, 255, 0.5); }
.btn-sm { height: 38px; padding: 0 18px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 24, 48, 0.94);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--navy-line);
  color: var(--on-dark);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { width: 36px; height: 36px; }
.brand-name { font-size: 17px; font-weight: 700; letter-spacing: 0.08em; }
.brand-name span { color: var(--blue-light); }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a:not(.btn) { font-size: 14px; font-weight: 500; color: var(--on-dark-soft); transition: color 0.2s; }
.nav-links a:not(.btn):hover, .nav-links a.active { color: #fff; }
.menu-toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--navy-line);
  border-radius: 10px;
  color: var(--on-dark);
  cursor: pointer;
}

/* Hero */
.dark { background: var(--navy); color: var(--on-dark); }
.hero { position: relative; overflow: hidden; padding: 104px 0 88px; text-align: center; }
.hero::before {
  content: "";
  position: absolute;
  inset: -40% -10% auto;
  height: 520px;
  background: radial-gradient(ellipse at center, rgba(47, 128, 224, 0.22), transparent 65%);
  pointer-events: none;
}
.hero .container { position: relative; }
.hero h1 { font-size: clamp(38px, 6vw, 64px); margin: 18px auto 22px; max-width: 880px; }
.hero-sub { max-width: 680px; margin: 0 auto; font-size: 18px; color: var(--on-dark-soft); }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 34px; }
.channel-strip { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 48px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid rgba(143, 194, 255, 0.22);
  background: rgba(143, 194, 255, 0.06);
  font-size: 13px; font-weight: 500;
  color: var(--on-dark);
}
.chip svg { width: 15px; height: 15px; color: var(--blue-light); }

/* Sections */
.section { padding: 96px 0; }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 56px; }
.section-head h2 { font-size: clamp(28px, 4vw, 40px); margin-top: 12px; }
.section-head p { margin-top: 16px; color: var(--ink-soft); font-size: 17px; }
.dark .section-head p { color: var(--on-dark-soft); }

/* Impact */
.impact-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: start; }
.impact-copy p { color: var(--ink-soft); margin-bottom: 18px; font-size: 17px; }
.powered { margin-top: 28px; padding: 24px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.powered h4 { font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-mute); margin-bottom: 14px; font-weight: 600; }
.powered ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 20px; }
.powered li { display: flex; align-items: center; gap: 10px; font-weight: 500; font-size: 15px; }
.powered li::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--blue); flex-shrink: 0; }
.powered .result { margin: 18px 0 0; padding-top: 16px; border-top: 1px solid var(--line); font-size: 15px; color: var(--ink); }

.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; box-shadow: var(--shadow); }
.stat-value { font-size: clamp(32px, 4vw, 42px); font-weight: 700; letter-spacing: -0.03em; color: var(--ink); line-height: 1.1; }
.stat-label { margin-top: 8px; color: var(--ink-soft); font-size: 14px; }
.stat-trend { display: inline-flex; align-items: center; gap: 6px; margin-top: 14px; font-size: 12px; font-weight: 600; color: #148a55; background: #e8f6ee; padding: 4px 10px; border-radius: 999px; }
.stat-trend svg { width: 14px; height: 14px; }

/* Channels */
.channels { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.channel-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }
.channel-card { grid-column: span 2; padding: 30px 28px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg); transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s; }
.channel-card:nth-child(4) { grid-column: 2 / span 2; }
.channel-card:hover { border-color: #c6d9f3; transform: translateY(-3px); box-shadow: var(--shadow); }
.channel-icon { width: 48px; height: 48px; border-radius: 12px; background: var(--blue-tint); color: var(--blue); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; }
.channel-icon svg { width: 24px; height: 24px; }
.channel-card h3 { font-size: 21px; }
.channel-card p { margin-top: 10px; color: var(--ink-soft); font-size: 15px; }
.channel-card ul { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 8px; }
.channel-card li { font-size: 14px; display: flex; gap: 10px; align-items: flex-start; }
.channel-card li svg { width: 16px; height: 16px; color: var(--blue); flex-shrink: 0; margin-top: 3px; }
.platforms { margin-top: 20px; padding-top: 16px; border-top: 1px dashed var(--line); font-size: 12px; color: var(--ink-mute); letter-spacing: 0.02em; }

/* Engine */
.engine-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 56px; align-items: center; }
.engine-copy h2 { font-size: clamp(28px, 4vw, 40px); margin: 12px 0 18px; }
.engine-copy > p { color: var(--ink-soft); font-size: 17px; }
.checklist { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 14px; }
.checklist li { display: flex; gap: 12px; align-items: flex-start; font-size: 15px; }
.checklist .tick { width: 22px; height: 22px; border-radius: 50%; background: var(--blue-tint); color: var(--blue); display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px; }
.checklist .tick svg { width: 13px; height: 13px; }

.layers { display: grid; gap: 14px; }
.layer { display: grid; grid-template-columns: 52px 1fr; gap: 18px; padding: 22px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); position: relative; }
.layer-num { width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 20px; color: #fff; background: linear-gradient(135deg, var(--blue), #4d9bf0); }
.layer-top { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.layer h3 { font-size: 18px; }
.layer-tag { font-size: 11px; font-weight: 600; letter-spacing: 0.14em; color: var(--ink-mute); text-transform: uppercase; }
.pills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.pill { font-size: 13px; padding: 5px 12px; border-radius: 999px; background: var(--bg); border: 1px solid var(--line); color: var(--ink); }
.layer-out { margin-top: 12px; font-size: 11px; font-weight: 700; letter-spacing: 0.14em; color: var(--blue); text-transform: uppercase; display: flex; align-items: center; gap: 6px; }
.layer-out svg { width: 14px; height: 14px; }

/* Process */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.step { padding: 28px 24px; border-radius: var(--radius); border: 1px solid var(--navy-line); background: var(--navy-2); }
.step-n { font-size: 13px; font-weight: 700; color: var(--blue-light); letter-spacing: 0.1em; }
.step h3 { font-size: 19px; margin-top: 12px; }
.step p { margin-top: 10px; font-size: 15px; color: var(--on-dark-soft); }

/* Who we work with */
.fit-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.fit { padding: 26px 24px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.fit h3 { font-size: 17px; }
.fit p { margin-top: 8px; font-size: 14px; color: var(--ink-soft); }

/* CTA */
.cta { padding: 88px 0; text-align: center; position: relative; overflow: hidden; }
.cta::after { content: ""; position: absolute; inset: auto -20% -60%; height: 420px; background: radial-gradient(ellipse at center, rgba(47, 128, 224, 0.2), transparent 65%); pointer-events: none; }
.cta .container { position: relative; z-index: 1; }
.cta h2 { font-size: clamp(28px, 4vw, 42px); max-width: 760px; margin: 0 auto; }
.cta p { margin: 16px auto 32px; max-width: 600px; color: var(--on-dark-soft); font-size: 17px; }

/* Footer */
.site-footer { background: var(--navy); color: var(--on-dark-soft); border-top: 1px solid var(--navy-line); padding: 56px 0 32px; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
.footer-grid p { margin-top: 16px; max-width: 380px; }
.footer-grid h4 { color: var(--on-dark); font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 14px; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.footer-grid a:hover { color: #fff; }
.site-footer .brand-name { color: var(--on-dark); }
.footer-bottom { margin-top: 44px; padding-top: 22px; border-top: 1px solid var(--navy-line); display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; }

/* Contact */
.page-hero { padding: 80px 0 64px; text-align: center; }
.page-hero h1 { font-size: clamp(34px, 5vw, 52px); margin: 14px auto 16px; max-width: 760px; }
.page-hero p { color: var(--on-dark-soft); max-width: 620px; margin: 0 auto; font-size: 17px; }
.contact-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: start; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 36px; box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: grid; gap: 8px; margin-bottom: 18px; }
.field label, .field legend { font-size: 14px; font-weight: 600; color: var(--ink); }
.field input, .field select, .field textarea {
  width: 100%;
  font: inherit;
  font-size: 15px;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(11, 95, 196, 0.15); background: #fff; }
fieldset.field { border: 0; padding: 0; margin: 0 0 18px; min-width: 0; }
.checks { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.check { position: relative; }
.check input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.check span { display: inline-block; padding: 8px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--bg); font-size: 14px; transition: all 0.15s; }
.check input:checked + span { background: var(--blue); border-color: var(--blue); color: #fff; }
.check input:focus-visible + span { box-shadow: 0 0 0 3px rgba(11, 95, 196, 0.25); }
.hidden-field { position: absolute; left: -9999px; }
.form-note { font-size: 13px; color: var(--ink-mute); margin-top: 14px; }
.side h3 { font-size: 20px; }
.side p { color: var(--ink-soft); margin-top: 10px; font-size: 15px; }
.side .next { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 18px; }
.side .next li { display: grid; grid-template-columns: 32px 1fr; gap: 12px; font-size: 15px; }
.side .next b { display: flex; align-items: center; justify-content: center; width: 32px; height: 32px; border-radius: 50%; background: var(--blue-tint); color: var(--blue); font-size: 14px; }
.side .next strong { display: block; }
.side .next span { color: var(--ink-soft); font-size: 14px; }
.mail-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 26px; font-weight: 600; color: var(--blue); }
.mail-link svg { width: 18px; height: 18px; }

/* Reveal */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* Responsive */
@media (max-width: 1000px) {
  .channel-grid { grid-template-columns: 1fr 1fr; }
  .channel-card, .channel-card:nth-child(4) { grid-column: auto; }
  .channel-card:nth-child(5) { grid-column: 1 / -1; }
  .steps, .fit-grid { grid-template-columns: 1fr 1fr; }
  .impact-grid, .engine-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 760px) {
  .container { padding: 0 16px; }
  .menu-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 72px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 12px 16px 20px;
    background: var(--navy);
    border-bottom: 1px solid var(--navy-line);
  }
  .nav-links.open { display: flex; }
  .nav-links a:not(.btn) { padding: 12px 4px; font-size: 16px; }
  .nav-links .btn { margin-top: 8px; }
  .hero { padding: 72px 0 64px; }
  .hero-sub { font-size: 16px; }
  .hero h1 { font-size: 34px; }
  .section { padding: 68px 0; }
  .channel-grid, .steps, .fit-grid, .form-row { grid-template-columns: 1fr; }
  .channel-card:nth-child(5) { grid-column: auto; }
  .powered ul { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat { padding: 20px 16px; }
  .layer { grid-template-columns: 1fr; gap: 14px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
  .card { padding: 24px 20px; }
}