:root {
  --navy-950: #031021;
  --navy-900: #05172d;
  --navy-850: #082241;
  --navy-800: #0a2d53;
  --navy-700: #0d3d6c;
  --teal-500: #00b7c7;
  --teal-600: #00a6b7;
  --teal-700: #0a8597;
  --aqua-100: #dff8fb;
  --ink: #101b34;
  --muted: #445066;
  --surface: #ffffff;
  --line: rgba(255,255,255,.16);
  --shadow: 0 24px 70px rgba(3, 18, 37, .32);
  --radius-lg: 18px;
  --radius-md: 12px;
  --container: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f5f9fc;
  line-height: 1.55;
}
a { color: inherit; }
img { display: block; max-width: 100%; height: auto; }
svg { width: 1.15em; height: 1.15em; }
.icon {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.icon-brand { fill: currentColor; }
.container { width: min(var(--container), calc(100% - 48px)); margin-inline: auto; }
.section-dark {
  color: #fff;
  background:
    radial-gradient(circle at 80% 25%, rgba(0, 183, 199, .26), transparent 33%),
    radial-gradient(circle at 60% 55%, rgba(5, 45, 83, .62), transparent 42%),
    linear-gradient(135deg, var(--navy-950), var(--navy-800));
}
.section-light { background: linear-gradient(180deg, #fff, #f4f8fb); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 86px;
  padding: 12px clamp(18px, 4vw, 38px);
  background: rgba(4, 18, 37, .97);
  border-bottom: 1px solid rgba(255,255,255,.10);
  backdrop-filter: blur(10px);
}
.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
}
.brand img {
  width: clamp(175px, 19vw, 215px);
  max-height: 56px;
  object-fit: contain;
  filter: drop-shadow(0 8px 22px rgba(0, 183, 199, .10));
}
.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2vw, 34px);
  color: #fff;
  font-weight: 600;
}
.site-nav a { text-decoration: none; font-size: .95rem; }
.site-nav > a:not(.btn):hover { color: var(--teal-500); }
.nav-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line); background: transparent; border-radius: 10px; }
.nav-toggle span:not(.sr-only) { display: block; width: 21px; height: 2px; margin: 5px auto; background: #fff; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 58px;
  padding: 0 22px;
  border-radius: 8px;
  font-weight: 800;
  text-decoration: none;
  transition: transform .2s ease, background .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: linear-gradient(180deg, var(--teal-500), var(--teal-700));
  box-shadow: 0 12px 30px rgba(0, 183, 199, .24);
  color: #fff;
}
.btn-primary:hover { background: linear-gradient(180deg, #13c9d9, var(--teal-600)); }
.btn-outline { border: 1px solid rgba(255,255,255,.72); color: #fff; background: rgba(255,255,255,.04); }
.btn-outline:hover { border-color: var(--teal-500); background: rgba(0,183,199,.08); }
.btn-small { min-height: 52px; padding: 0 20px; }
.btn svg { width: 20px; height: 20px; stroke-width: 2.35; flex: 0 0 auto; }

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(46px, 7vw, 92px) 0 58px;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 100% 45%, rgba(0, 183, 199, .14), transparent 22%),
    linear-gradient(90deg, rgba(0, 0, 0, 0) 60%, rgba(3, 16, 33, .20) 100%);
  pointer-events: none;
}
.hero-bg {
  position: absolute;
  inset: 0;
  opacity: .58;
  background-image:
    linear-gradient(90deg, rgba(0,183,199,.09) 1px, transparent 1px),
    linear-gradient(rgba(0,183,199,.08) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: linear-gradient(90deg, #000, transparent 66%);
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.03fr .97fr;
  align-items: center;
  gap: clamp(30px, 5vw, 68px);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 6px 15px;
  border: 1px solid rgba(0, 183, 199, .9);
  border-radius: 999px;
  color: var(--teal-500);
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: .9rem;
  font-weight: 800;
}
.hero h1 {
  margin: 24px 0 18px;
  font-size: clamp(3.2rem, 6vw, 5.75rem);
  line-height: .98;
  letter-spacing: -.055em;
  text-shadow: 0 8px 24px rgba(0,0,0,.35);
}
.hero-subtitle {
  max-width: 710px;
  margin: 0 0 16px;
  font-size: clamp(1.25rem, 2.3vw, 1.75rem);
  line-height: 1.32;
  font-weight: 800;
}
.hero-description {
  max-width: 610px;
  margin: 0 0 34px;
  color: rgba(255,255,255,.84);
  font-size: 1.14rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 22px; }
.trust-line { display: flex; align-items: center; gap: 10px; color: rgba(255,255,255,.85); }
.trust-line svg { color: var(--teal-500); flex: 0 0 auto; }
.hero-art {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  isolation: isolate;
}
.hero-art::before {
  content: "";
  position: absolute;
  inset: 6% 5% 6% 18%;
  background: radial-gradient(circle at 52% 52%, rgba(0, 183, 199, .20), rgba(0, 183, 199, 0) 62%);
  filter: blur(26px);
  z-index: -2;
}
.hero-art::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(3, 16, 33, .86) 0%, rgba(3, 16, 33, .15) 22%, rgba(3, 16, 33, 0) 36%),
    linear-gradient(180deg, rgba(3, 16, 33, 0) 0%, rgba(3, 16, 33, 0) 78%, rgba(3, 16, 33, .82) 100%),
    linear-gradient(90deg, rgba(3, 16, 33, 0) 72%, rgba(3, 16, 33, .60) 100%);
  border-radius: 12px;
  pointer-events: none;
}
.hero-art img {
  width: min(100%, 548px);
  border-radius: 12px;
  filter: drop-shadow(0 32px 55px rgba(0,0,0,.48));
}

.topics { padding: 42px 0 32px; }
.section-heading { text-align: center; max-width: 820px; margin: 0 auto 28px; }
.kicker { margin: 0 0 6px; color: #007f91; text-transform: uppercase; letter-spacing: .08em; font-size: .82rem; font-weight: 900; }
.section-heading h2, .author-copy h2, .cta h2 { margin: 0; color: #0d1a36; letter-spacing: -.035em; }
.section-heading h2 { font-size: clamp(2rem, 3vw, 2.8rem); }
.section-heading p:last-child { margin: 6px 0 0; color: var(--muted); }
.topic-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 22px; margin-top: 26px; }
.topic-card { text-align: center; }
.icon-bubble {
  display: grid;
  place-items: center;
  width: 82px;
  height: 82px;
  margin: 0 auto 12px;
  border-radius: 50%;
  color: var(--teal-700);
  background: radial-gradient(circle at 50% 28%, #f9feff, #dceff2 76%);
}
.icon-bubble svg { width: 42px; height: 42px; stroke-width: 2.35; }
.topic-card h3 { margin: 0 0 8px; font-size: 1rem; }
.topic-card p { margin: 0; color: #334155; font-size: .94rem; }

.stats-panel {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 42px;
  padding: 28px 22px;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 50% 0, rgba(0, 183, 199, .18), transparent 55%),
    linear-gradient(135deg, #06152c, #06294b);
  color: #fff;
  box-shadow: var(--shadow);
}
.stat { text-align: center; padding: 0 24px; border-right: 1px solid rgba(255,255,255,.18); }
.stat:last-child { border-right: 0; }
.stat svg { width: 40px; height: 40px; color: var(--teal-500); margin-bottom: 6px; stroke-width: 2.25; }
.stat strong { display: block; color: var(--teal-500); font-size: clamp(2.4rem, 5vw, 4rem); line-height: 1; }
.stat span { display: block; font-weight: 850; }
.stat p { margin: 6px 0 0; color: rgba(255,255,255,.85); font-size: .92rem; }

.author { padding: 32px 0 34px; }
.author-grid { display: grid; grid-template-columns: 220px 1fr; gap: 42px; align-items: center; max-width: 940px; }
.author-photo { width: 180px; aspect-ratio: 1; border-radius: 50%; object-fit: cover; box-shadow: none; }
.author-copy h2 { font-size: clamp(1.9rem, 3vw, 2.5rem); }
.author-copy p { color: #253047; margin: 8px 0; }
.linkedin { display: inline-flex; align-items: center; gap: 8px; margin-top: 8px; color: #007f91; font-weight: 700; }
.linkedin svg { width: 18px; height: 18px; }

.cta-wrap { padding: 0 0 28px; }
.cta { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 24px; padding: 28px clamp(24px, 5vw, 58px); border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.cta h2 { color: #fff; font-size: clamp(1.25rem, 2vw, 1.7rem); }
.cta p { margin: 5px 0 0; color: rgba(255,255,255,.86); }
.cta-icon { color: var(--teal-500); }
.cta-icon svg { width: 52px; height: 52px; stroke-width: 2.2; }

.site-footer { padding: 26px 0; }
.footer-grid { display: grid; grid-template-columns: 230px 1fr auto; gap: 40px; align-items: center; }
.footer-grid img { width: 190px; max-height: 54px; object-fit: contain; }
.footer-grid p { margin: 0; color: rgba(255,255,255,.78); }
.footer-contact { text-align: right; }
.footer-contact a { text-decoration: none; }
.footer-contact a:hover { color: var(--teal-500); }

@media (max-width: 980px) {
  .site-header { min-height: 74px; }
  .brand img { width: 200px; }
  .nav-toggle { display: block; }
  .site-nav {
    position: absolute;
    inset: 74px 20px auto 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(4,18,37,.98);
    box-shadow: var(--shadow);
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 14px; }
  .site-nav .btn { margin-top: 8px; }
  .hero-grid { grid-template-columns: 1fr; text-align: left; }
  .hero-art { max-width: 640px; margin-inline: auto; justify-content: center; }
  .topic-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr; text-align: center; gap: 18px; }
  .footer-grid img { margin-inline: auto; }
  .footer-contact { text-align: center; }
}

@media (max-width: 720px) {
  .container { width: min(100% - 32px, var(--container)); }
  .hero { padding-top: 38px; }
  .hero h1 { font-size: clamp(3rem, 15vw, 4.4rem); }
  .hero-actions, .btn { width: 100%; }
  .topic-grid { grid-template-columns: 1fr 1fr; gap: 26px 18px; }
  .stats-panel { grid-template-columns: 1fr 1fr; gap: 22px 0; }
  .stat:nth-child(2) { border-right: 0; }
  .author-grid { grid-template-columns: 1fr; text-align: center; gap: 18px; }
  .author-photo { margin-inline: auto; }
  .cta { grid-template-columns: 1fr; text-align: center; }
  .cta-icon { margin-inline: auto; }
}

@media (max-width: 480px) {
  .brand img { width: 172px; }
  .site-header { padding-inline: 14px; }
  .topic-grid, .stats-panel { grid-template-columns: 1fr; }
  .stat { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.18); padding: 0 10px 22px; }
  .stat:last-child { border-bottom: 0; padding-bottom: 0; }
}