/* Base layout */
:root {
  color-scheme: light dark;
  --primary: #1e4ed8;
  --secondary: #0f172a;
  --accent: #38bdf8;
  --bg: #f8fafc;
  --text: #0f172a;
  --muted: #64748b;
  --surface: #ffffff;
  --border: rgba(148, 163, 184, 0.3);
  --shadow: 0 10px 40px rgba(15, 23, 42, 0.12);
  font-size: 16px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

header {
  background: linear-gradient(135deg, rgba(30, 78, 216, 0.95), rgba(15, 23, 42, 0.95));
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.top-bar {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 28px;
  font-size: 0.95rem;
}

nav a {
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

nav a:hover,
nav a.active {
  border-color: var(--accent);
  color: var(--accent);
}

.hero {
  padding: 120px 24px 100px;
  background: radial-gradient(circle at top right, rgba(56, 189, 248, 0.25), transparent 45%),
    linear-gradient(180deg, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.6));
  color: #fff;
}

.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 48px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.6rem);
  margin-bottom: 24px;
  letter-spacing: 0.03em;
}

.hero p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 32px;
}

.hero .cta-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: var(--secondary);
  box-shadow: var(--shadow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 45px rgba(56, 189, 248, 0.35);
}

.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}

.btn-outline:hover {
  border-color: #fff;
  transform: translateY(-2px);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.metric-card {
  backdrop-filter: blur(5px);
  background: rgba(15, 23, 42, 0.4);
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 16px;
  padding: 24px;
}

.metric-card h3 {
  font-size: 2rem;
  margin-bottom: 8px;
}

main {
  background-color: var(--bg);
}

.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 96px 24px;
}

.section h2 {
  font-size: 2rem;
  margin-bottom: 16px;
  color: var(--secondary);
}

.section .subtitle {
  font-size: 1.05rem;
  color: var(--muted);
  margin-bottom: 48px;
}

.grid {
  display: grid;
  gap: 32px;
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  align-items: start;
}

.card {
  background: var(--surface);
  border-radius: 20px;
  padding: 32px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 55px rgba(15, 23, 42, 0.14);
}

.card h3 {
  margin-bottom: 16px;
  font-size: 1.25rem;
  color: var(--secondary);
}

.card p {
  color: var(--muted);
  font-size: 0.97rem;
  margin-bottom: 16px;
}

.card ul {
  list-style: none;
  display: grid;
  gap: 12px;
  color: var(--muted);
}

.spotlight {
  background: linear-gradient(120deg, rgba(255, 255, 255, 0.95), rgba(226, 232, 240, 0.9));
  border-radius: 28px;
  padding: 48px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 32px;
  align-items: center;
}

.spotlight h3 {
  font-size: 1.5rem;
  color: var(--secondary);
  margin-bottom: 16px;
}

.spotlight p {
  color: var(--muted);
  font-size: 1rem;
}

.timeline {
  position: relative;
  padding-left: 24px;
  display: grid;
  gap: 32px;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 0;
  left: 8px;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary), rgba(30, 78, 216, 0));
}

.timeline-item {
  position: relative;
  padding-left: 24px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -20px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: var(--primary);
  box-shadow: 0 0 0 4px rgba(30, 78, 216, 0.15);
}

.timeline-item h4 {
  font-size: 1.15rem;
  color: var(--secondary);
  margin-bottom: 8px;
}

.timeline-item span {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 12px;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.contact-card {
  background: var(--surface);
  border-radius: 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 36px;
}

.contact-card h3 {
  font-size: 1.35rem;
  margin-bottom: 12px;
  color: var(--secondary);
}

.contact-card p {
  font-size: 1rem;
  color: var(--muted);
}

.contact-info {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.contact-info a {
  color: var(--primary);
  font-weight: 600;
}

footer {
  background: var(--secondary);
  color: rgba(255, 255, 255, 0.7);
  padding: 48px 24px;
}

footer .footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
}

footer h4 {
  color: #fff;
  font-size: 1.1rem;
  margin-bottom: 16px;
}

footer ul {
  list-style: none;
  display: grid;
  gap: 12px;
}

footer .copyright {
  text-align: center;
  margin-top: 32px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

@media (max-width: 768px) {
  .hero {
    padding: 100px 24px 80px;
  }

  nav ul {
    gap: 16px;
  }

  .spotlight {
    padding: 32px;
  }
}