:root {
  --ink: #0a0a0a;
  --bg: #ffffff;
  --muted: #6b7280;
  --accent: #4e6e89;
  --radius: 18px;
  --container: 1120px;
  --shadow: 0 6px 18px rgba(0,0,0,.06);
  --nav-gap: 28px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  line-height: 1.6;
  overflow-x: hidden;
}
a { color: var(--accent); text-decoration: none; transition: opacity .15s ease; }
a:hover { opacity: .85; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }
header {
  position: fixed; top: 0; left: 0; right: 0; background: rgba(255,255,255,.92);
  backdrop-filter: saturate(160%) blur(12px); border-bottom: 1px solid #ececec; z-index: 50;
}
.nav {
  display: grid; grid-template-columns: auto 1fr; align-items: center;
  height: 74px; column-gap: 24px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 28px; display: block; }
nav ul { display: flex; gap: var(--nav-gap); list-style: none; align-items: center; justify-content: flex-end; }
nav a { color: var(--ink); font-weight: 600; letter-spacing: .2px; }
.hero {
  position: relative; text-align: center; padding: 180px 20px 160px;
  background: linear-gradient(180deg, #f9fafb 0%, #ffffff 100%);
  overflow: hidden;
}
.hero h1 { font-size: clamp(36px, 5vw, 56px); line-height: 1.1; color: var(--ink); margin-bottom: 12px; }
.hero p { color: var(--muted); font-size: 18px; max-width: 720px; margin: 0 auto 28px; }
.hero .btn {
  display: inline-block; background: var(--accent); color: white; padding: 12px 20px;
  border-radius: 12px; font-weight: 600; box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.hero .btn:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(0,0,0,.08); }
.hero svg#heroArc {
  position: absolute; top: 35%; left: 50%; transform: translate(-50%, -50%) scale(1);
  opacity: 0.06; animation: arcPulse 60s ease-in-out infinite;
}
@keyframes arcPulse {
  0% { opacity: .05; transform: translate(-50%, -50%) scale(1.00); }
  50% { opacity: .10; transform: translate(-50%, -50%) scale(1.03); }
  100% { opacity: .05; transform: translate(-50%, -50%) scale(1.00); }
}
section { padding: 120px 0; }
section h2 { text-align: center; font-size: 36px; color: var(--ink); margin-bottom: 24px; letter-spacing:.1px; }
section p.sub { text-align: center; color: var(--muted); max-width: 720px; margin: 0 auto 60px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.card {
  background: #fff; border: 1px solid #ececec; border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow); transition: transform .2s ease;
}
.card:hover { transform: translateY(-4px); }
.reveal { opacity: 0; transform: translateY(20px); transition: all 0.8s ease-out; }
.reveal.visible { opacity: 1; transform: translateY(0); }
input, textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #e2e5ea;
  border-radius: 10px;
  font: inherit;
  transition: outline-color .15s ease, border-color .15s ease, box-shadow .15s ease;
}
input:focus, textarea:focus { outline: 2px solid rgba(78,110,137,.25); border-color: rgba(78,110,137,.45); box-shadow: 0 0 0 2px rgba(78,110,137,.08); }
footer {
  padding: 60px 20px; background: #f7f8fa; text-align: center; color: var(--muted);
  border-top: 1px solid #ececec;
}
footer a { color: var(--accent); }
.linkedin { display:flex; align-items:center; justify-content:center; gap:8px; margin-top: 12px; }
@media(max-width:1000px){
  .grid-3{grid-template-columns:1fr}
  header{position:static}
  .nav{grid-template-columns: 1fr}
  nav ul { justify-content: center; }
}