:root {
  --bg-body: #050816;
  --bg-surface: #0c1120;
  --bg-surface-alt: #080c17;
  --accent: #2f81f7;
  --accent-soft: rgba(47, 129, 247, 0.12);
  --accent-strong: #1a5dcc;
  --border-subtle: #1b2335;
  --text-main: #f5f7ff;
  --text-muted: #a7b0c6;
  --text-soft: #7a849c;
  --danger: #f97373;
  --font-main: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --focus-ring: 0 0 0 2px rgba(47, 129, 247, 0.6), 0 0 0 4px rgba(47, 129, 247, 0.2);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.45);
  --shadow-subtle: 0 10px 25px rgba(0, 0, 0, 0.35);
  --max-width: 1120px;
}

/* Reset-ish */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  background: radial-gradient(circle at top left, #172554 0, #020617 52%, #000000 100%);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
}

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

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  z-index: 30;
  transition: left 0.15s ease;
}

.skip-link:focus-visible {
  left: 1rem;
  box-shadow: var(--shadow-soft);
}

/* Layout helpers */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 4.5rem 0;
}

.section-alt {
  padding: 4.5rem 0;
  background: radial-gradient(circle at top, rgba(37, 99, 235, 0.08), transparent 55%);
}

.section,
.section-alt,
.hero {
  scroll-margin-top: 84px;
}

.section-header {
  text-align: center;
  margin-bottom: 2.75rem;
}

.section-header.left {
  text-align: left;
}

.section-header h2 {
  font-size: 1.85rem;
  margin: 0 0 0.5rem;
  letter-spacing: 0.03em;
}

.section-header p {
  margin: 0;
  color: var(--text-soft);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: linear-gradient(to bottom, rgba(3, 7, 18, 0.92), rgba(3, 7, 18, 0.78));
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0.5rem;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo {
  width: 40px;
  height: auto;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-weight: 600;
  font-size: 0.98rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.brand-tagline {
  font-size: 0.8rem;
  color: var(--text-soft);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.9rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.main-nav a {
  color: var(--text-muted);
  padding: 0.25rem 0;
  position: relative;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.25rem;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.18s ease-out;
}

.main-nav a:hover {
  color: var(--text-main);
}

.main-nav a:hover::after {
  width: 100%;
}

.main-nav .nav-cta {
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: radial-gradient(circle at top left, rgba(59, 130, 246, 0.35), rgba(15, 23, 42, 0.95));
  box-shadow: var(--shadow-subtle);
}

.main-nav a:focus-visible,
.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* Hero */

.hero {
  padding: 3.75rem 0 4.25rem;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1.1fr);
  gap: 2.5rem;
  align-items: center;
}

.hero-copy h1 {
  font-size: clamp(2.1rem, 3vw, 2.65rem);
  margin: 0 0 1rem;
  letter-spacing: 0.02em;
}

.hero-copy p {
  margin: 0 0 1.75rem;
  color: var(--text-muted);
  max-width: 34rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.4rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.2rem;
  border-radius: var(--radius-pill);
  font-size: 0.92rem;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.16s ease-out, border-color 0.16s ease-out, transform 0.08s ease-out;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  border-color: rgba(15, 23, 42, 0.7);
  box-shadow: var(--shadow-soft);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 22px 50px rgba(30, 64, 175, 0.6);
}

.btn-ghost {
  background: rgba(15, 23, 42, 0.7);
  border-color: rgba(148, 163, 184, 0.4);
}

.btn-ghost:hover {
  background: rgba(15, 23, 42, 0.9);
}

.hero-meta {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-meta li {
  font-size: 0.8rem;
  color: var(--text-soft);
  padding: 0.2rem 0.75rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.3);
  background: radial-gradient(circle at top left, rgba(51, 65, 85, 0.9), rgba(15, 23, 42, 0.9));
}

.hero-panel {
  display: flex;
  justify-content: flex-end;
}

.hero-card {
  max-width: 340px;
  padding: 1.6rem 1.4rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  background: radial-gradient(circle at top left, rgba(37, 99, 235, 0.35), rgba(15, 23, 42, 0.98));
  box-shadow: var(--shadow-soft);
}

.hero-card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.2rem;
}

.hero-card p {
  margin: 0 0 0.75rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.hero-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-main);
  font-size: 0.9rem;
}

/* Grid & Cards */

.grid {
  display: grid;
  gap: 1.75rem;
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  background: rgba(15, 23, 42, 0.95);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.4rem;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-subtle);
}

.card.compact {
  padding: 1.3rem 1.25rem;
}

.card h3 {
  margin: 0 0 0.6rem;
  font-size: 1.05rem;
}

.card p {
  margin: 0 0 0.8rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.card-list {
  list-style: none;
  margin: 0;
  padding: 0;
  color: var(--text-soft);
  font-size: 0.88rem;
}

.card-list li {
  padding-left: 1.1rem;
  position: relative;
  margin-bottom: 0.25rem;
}

.card-list li::before {
  content: "\203A";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* Pill cards */

.pill-card {
  background: radial-gradient(circle at top left, rgba(51, 65, 85, 0.9), rgba(15, 23, 42, 0.98));
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.4rem;
  border: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: var(--shadow-subtle);
}

.pill-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.02rem;
}

.pill-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* About */

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1.1fr);
  gap: 2rem;
}

.about-aside {
  background: rgba(15, 23, 42, 0.95);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.4rem;
  border: 1px solid var(--border-subtle);
}

/* Contact */

.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.4fr);
  gap: 2rem;
  padding: 1.75rem 1.5rem;
  border-radius: var(--radius-lg);
  background: rgba(15, 23, 42, 0.97);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-subtle);
}

.contact-link {
  color: var(--accent);
  font-weight: 500;
}

/* Footer */

.site-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.25);
  padding: 1.2rem 0 1.5rem;
  background: radial-gradient(circle at top, rgba(15, 23, 42, 0.95), #020617);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-soft);
}

.footer-secondary {
  opacity: 0.9;
}

/* Responsive */

@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-panel {
    justify-content: flex-start;
  }

  .about-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .contact-panel {
    grid-template-columns: minmax(0, 1fr);
  }

  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 720px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .main-nav {
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .hero {
    padding-top: 3rem;
  }
}