:root {
  --bg: #0f172a;
  --bg-soft: #111c34;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --accent-soft: #dbeafe;
  --gold: #f59e0b;
  --radius: 20px;
  --shadow: 0 18px 50px rgba(15, 23, 42, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: #f8fafc;
  line-height: 1.65;
}

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

img {
  max-width: 100%;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(248, 250, 252, 0.9);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.85);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 0;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.brand strong {
  font-size: 1.02rem;
  letter-spacing: -0.02em;
}

.brand span {
  color: var(--muted);
  font-size: 0.82rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: #334155;
  font-size: 0.94rem;
}

.nav a {
  padding: 8px 4px;
  border-bottom: 2px solid transparent;
}

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

.hero {
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at top left, rgba(37, 99, 235, 0.26), transparent 34%), linear-gradient(135deg, #0f172a 0%, #172554 58%, #111827 100%);
  color: #fff;
  padding: 92px 0 72px;
}

.hero::after {
  content: "";
  position: absolute;
  width: 460px;
  height: 460px;
  border-radius: 999px;
  right: -150px;
  bottom: -230px;
  background: rgba(245, 158, 11, 0.22);
  filter: blur(3px);
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: 44px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #bfdbfe;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  margin-bottom: 18px;
}

.eyebrow::before {
  content: "";
  width: 34px;
  height: 2px;
  background: var(--gold);
}

.hero h1 {
  margin: 0 0 22px;
  font-size: clamp(2.25rem, 6vw, 4.85rem);
  line-height: 0.98;
  letter-spacing: -0.065em;
}

.hero p {
  margin: 0 0 30px;
  font-size: 1.15rem;
  color: #dbeafe;
  max-width: 760px;
}

.hero-actions,
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 999px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: 0.2s ease;
}

.btn.primary {
  background: #fff;
  color: #0f172a;
}

.btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.18);
}

.btn.secondary {
  border-color: rgba(255, 255, 255, 0.34);
  color: #fff;
}

.btn.secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.btn.dark {
  background: var(--accent);
  color: #fff;
}

.btn.dark:hover {
  background: var(--accent-dark);
}

.hero-card {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.25);
}

.hero-card h2 {
  margin: 0 0 14px;
  font-size: 1.25rem;
}

.hero-card ul {
  margin: 0;
  padding-left: 20px;
  color: #dbeafe;
}

.section {
  padding: 76px 0;
}

.section.tight {
  padding: 48px 0;
}

.section-title {
  display: grid;
  grid-template-columns: 0.72fr 1fr;
  gap: 44px;
  align-items: end;
  margin-bottom: 32px;
}

.kicker {
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.78rem;
  margin-bottom: 10px;
}

.section-title h2,
.page-heading h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.05;
  letter-spacing: -0.045em;
}

.section-title p,
.page-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.card,
.paper-card,
.note-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
}

.card h3,
.paper-card h3,
.note-card h3 {
  margin: 0 0 12px;
  font-size: 1.22rem;
  letter-spacing: -0.02em;
}

.card p,
.paper-card p,
.note-card p {
  margin: 0;
  color: var(--muted);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #1e40af;
  font-size: 0.8rem;
  font-weight: 700;
}

.split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 36px;
  align-items: start;
}

.panel-dark {
  background: var(--bg);
  color: #fff;
  border-radius: 28px;
  padding: 34px;
  box-shadow: var(--shadow);
}

.panel-dark p {
  color: #cbd5e1;
}

.feature-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 12px;
  align-items: start;
  color: #334155;
}

.feature-list li::before {
  content: "✓";
  display: inline-flex;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 900;
}

.page-hero {
  background: linear-gradient(135deg, #eff6ff 0%, #f8fafc 55%, #fff7ed 100%);
  border-bottom: 1px solid var(--line);
  padding: 66px 0 52px;
}

.page-heading {
  max-width: 860px;
}

.page-heading p {
  margin-top: 16px;
}

.timeline {
  display: grid;
  gap: 18px;
}

.timeline-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}

.timeline-item strong {
  display: block;
  color: var(--accent);
  margin-bottom: 8px;
}

.contact-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.contact-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}

.contact-item span {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.site-footer {
  background: #020617;
  color: #cbd5e1;
  padding: 34px 0;
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
}

.footer-wrap small {
  color: #94a3b8;
}

@media (max-width: 900px) {
  .nav-wrap,
  .footer-wrap {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    flex-wrap: wrap;
    gap: 10px 16px;
  }

  .hero-grid,
  .section-title,
  .split,
  .contact-box {
    grid-template-columns: 1fr;
  }

  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 64px 0 52px;
  }
}

@media (max-width: 520px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  .hero-actions,
  .actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}