:root {
  --bg: #f3f4f6;
  --bg-alt: #ffffff;
  --card-bg: #ffffff;
  --accent: #2563eb;
  --accent-soft: rgba(37, 99, 235, 0.08);
  --text: #0f172a;
  --muted: #6b7280;
  --border: #e5e7eb;
  --danger: #ef4444;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.08);
  --header-bg: rgba(255, 255, 255, 0.95);
  --header-border: rgba(229, 231, 235, 0.9);
  --hero-bg: radial-gradient(circle at top, #e5e7eb 0, #f9fafb 40%, #ffffff 100%);
  --section-alt-bg: radial-gradient(circle at top left, #eef2ff 0, #ffffff 75%);
  --page-hero-bg: radial-gradient(circle at top, #e5edff 0, #ffffff 60%);
  --cta-bg: linear-gradient(135deg, #1d4ed8, #2563eb);
  --cta-text: #f9fafb;
  --cta-muted: #e5e7eb;
  --footer-bg: #f9fafb;
  --footer-border: #e5e7eb;
  --nav-link-hover-bg: rgba(209, 213, 219, 0.4);
  --nav-link-active-bg: rgba(219, 234, 254, 0.8);
  --body-gradient: radial-gradient(circle at top, #e5e7eb 0, #f9fafb 40%, #ffffff 100%);
}

:root[data-theme="dark"] {
  --bg: #050811;
  --bg-alt: #0b101c;
  --card-bg: #0f172a;
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.15);
  --text: #f9fafb;
  --muted: #9ca3af;
  --border: #1f2933;
  --danger: #f97373;
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.45);
  --header-bg: rgba(3, 7, 18, 0.9);
  --header-border: rgba(15, 23, 42, 0.9);
  --hero-bg: radial-gradient(circle at top, #0f172a 0, #020617 52%, #000 100%);
  --section-alt-bg: radial-gradient(circle at top left, #111827 0, #020617 60%);
  --page-hero-bg: radial-gradient(circle at top, #111827 0, #020617 60%);
  --cta-bg: linear-gradient(135deg, #0f172a, #020617 55%, #0b1120);
  --cta-text: #f9fafb;
  --cta-muted: #9ca3af;
  --footer-bg: #020617;
  --footer-border: rgba(15, 23, 42, 0.9);
  --nav-link-hover-bg: rgba(15, 23, 42, 0.9);
  --nav-link-active-bg: rgba(15, 23, 42, 0.9);
  --body-gradient: radial-gradient(circle at top, #0f172a 0, #020617 52%, #000 100%);
}

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

html, body {
  margin: 0;
  padding: 0;
  background: var(--body-gradient);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  scroll-behavior: smooth;
}

body {
  line-height: 1.6;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 4rem 0;
}

.section-alt {
  background: var(--section-alt-bg);
}

.section-title {
  font-size: 1.9rem;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  color: var(--muted);
  max-width: 640px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header-bg);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--header-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: inherit;
}

.logo img {
  height: 32px;
  width: auto;
  border-radius: 8px;
}

.logo span {
  font-weight: 700;
  letter-spacing: 0.03em;
  font-size: 1rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.main-nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.95rem;
  transition: color 0.15s ease, transform 0.15s ease, background 0.15s ease;
  padding: 0.25rem 0.5rem;
  border-radius: 999px;
}

.main-nav a:hover {
  color: var(--accent);
  background: var(--nav-link-hover-bg);
  transform: translateY(-1px);
}

.main-nav a.active {
  color: var(--accent);
  background: var(--nav-link-active-bg);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  font-size: 1.5rem;
  color: var(--text);
}

.theme-toggle {
  margin-left: 0.75rem;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  color: var(--text);
  border-radius: 999px;
  padding: 0.35rem 0.6rem;
  font-size: 0.9rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  border-color: var(--accent);
}

.hero {
  padding: 5rem 0 4rem;
  background: var(--hero-bg);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 2.5rem;
  align-items: center;
}

.hero-text h1 {
  font-size: 2.4rem;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero-text p {
  color: var(--muted);
  max-width: 560px;
}

.hero-actions {
  margin-top: 1.8rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.hero-card {
  background: radial-gradient(circle at top, var(--card-bg), var(--bg));
  border-radius: var(--radius-xl);
  padding: 1.8rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border);
}

.hero-card h2 {
  margin-top: 0;
  font-size: 1.3rem;
}

.hero-card p {
  color: var(--muted);
  margin-bottom: 1.2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.4rem;
  border-radius: 999px;
  border: 1px solid transparent;
  background: linear-gradient(135deg, var(--accent), #1d4ed8);
  color: #f9fafb;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.3);
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 40px rgba(37, 99, 235, 0.4);
}

.btn-ghost {
  background: transparent;
  color: var(--accent);
  border-color: rgba(148, 163, 184, 0.7);
  box-shadow: none;
}

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

.btn-outline {
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: transparent;
  color: var(--muted);
  font-size: 0.85rem;
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.btn-full {
  width: 100%;
}

.btn-light {
  background: #111827;
  color: #f9fafb;
  box-shadow: 0 10px 28px rgba(55, 65, 81, 0.25);
}

.grid {
  display: grid;
  gap: 1.8rem;
  margin-top: 1.8rem;
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

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

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 1.4rem 1.5rem;
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.04);
}

.card h3 {
  margin-top: 0;
}

.bullet-list {
  padding-left: 1.1rem;
  margin: 0.6rem 0 0;
  color: var(--muted);
}

.bullet-list li {
  margin-bottom: 0.3rem;
}

.check-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.check-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
  color: var(--muted);
}

.check-list li::before {
  content: "✔";
  font-size: 0.85rem;
  color: var(--accent);
}

.pill-row {
  margin-top: 1.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.pill {
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--muted);
  background: var(--bg-alt);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
  margin-top: 1.8rem;
}

.highlight-box {
  background: var(--accent-soft);
  border-radius: var(--radius-xl);
  padding: 1.5rem 1.6rem;
  border: 1px solid var(--border);
}

.cta-section {
  background: var(--cta-bg);
  border-top: 1px solid rgba(37, 99, 235, 0.5);
  color: var(--cta-text);
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.cta-section h2 {
  color: var(--cta-text);
}

.cta-section p {
  color: var(--cta-muted);
}

.page-hero {
  padding: 4rem 0 2.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--page-hero-bg);
}

.page-hero h1 {
  font-size: 2.1rem;
  margin-bottom: 0.6rem;
}

.page-hero p {
  color: var(--muted);
  max-width: 640px;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 2rem;
}

.contact-details p {
  margin: 0.3rem 0;
}

.contact-form {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 1.7rem 1.6rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.55rem 0.65rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  color: var(--text);
  font-family: inherit;
  font-size: 0.9rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.4);
}

.site-footer {
  border-top: 1px solid var(--footer-border);
  background: var(--footer-bg);
  padding: 1.5rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.footer-company {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.footer-logo-wrap {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.footer-logo {
  height: 26px;
  width: auto;
  border-radius: 6px;
}

.footer-name {
  font-weight: 600;
}

.footer-meta {
  font-size: 0.8rem;
  opacity: 0.85;
}

.footer-contact-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.8rem;
}

.footer-links {
  display: flex;
  gap: 1rem;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
}

.footer-links a:hover {
  color: var(--accent);
}

.center {
  text-align: center;
}

.margin-top-lg {
  margin-top: 2.2rem;
}

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

  .hero {
    padding-top: 4rem;
  }

  .hero-text h1 {
    font-size: 2rem;
  }

  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 720px) {
  .header-inner {
    padding: 0.7rem 0;
  }

  .hero-inner {
    gap: 2rem;
  }

  .grid-3,
  .grid-2,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .nav-toggle {
    display: block;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    padding: 0.8rem 1.5rem 1rem;
    flex-direction: column;
    gap: 0.6rem;
    background: var(--header-bg);
    border-bottom: 1px solid var(--header-border);
    transform-origin: top;
    transform: scaleY(0);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.15s ease, opacity 0.15s ease;
  }

  .main-nav.nav-open {
    transform: scaleY(1);
    opacity: 1;
    pointer-events: auto;
  }

  .main-nav .btn-outline {
    align-self: flex-start;
  }

  .page-hero {
    padding-top: 3.2rem;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}