:root {
  --color-bg: #f5f5f7;
  --color-surface: #ffffff;
  --color-surface-alt: #f0f2f6;
  --color-primary: #0b2948;
  --color-primary-soft: #163a63;
  --color-accent: #f5b429;
  --color-text: #111827;
  --color-text-soft: #4b5563;
  --color-border: #d1d5db;

  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;

  --shadow-soft: 0 14px 35px rgba(15, 23, 42, 0.14);

  --font-body: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

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

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

/* Layout utilities */

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

.section {
  padding: 4rem 0;
}

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

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 2.5rem;
}

.section-header h2 {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  color: var(--color-primary);
}

.section-header p {
  margin: 0;
  color: var(--color-text-soft);
}

/* Header & navigation */

.site-header {
  background: #ffffff;
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 20%, #f9fafb, var(--color-primary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #ffffff;
  margin-right: 0.75rem;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
}

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

.logo-title {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-primary);
}

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

/* Nav */

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

.nav-link {
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--color-text-soft);
  padding: 0.4rem 0.2rem;
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.25rem;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.18s ease-out;
}

.nav-link:hover::after,
.nav-link.is-active::after {
  transform: scaleX(1);
}

.nav-link.nav-cta {
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(15, 23, 42, 0.15);
  color: var(--color-primary);
}

.nav-link.nav-cta:hover {
  background: var(--color-primary);
  color: #ffffff;
}

/* Mobile nav toggle */

.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  padding: 0.25rem;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 999px;
  margin: 4px 0;
}

/* Hero */

.hero {
  background: radial-gradient(circle at top left, #e5ecf7 0, #f9fafb 36%, var(--color-bg) 100%);
  padding: 4rem 0 4.5rem;
}

.hero-compact {
  padding: 3rem 0;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1.4fr);
  gap: 2rem;
  align-items: center;
}

.hero-content h1 {
  font-size: clamp(2.1rem, 3vw, 2.8rem);
  margin: 0 0 1rem;
  color: var(--color-primary);
}

.hero-content p {
  margin: 0 0 1.5rem;
  color: var(--color-text-soft);
  max-width: 36rem;
}

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

/* Hero side card */

.hero-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-soft);
}

.hero-card h2 {
  margin-top: 0;
  font-size: 1.25rem;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.hero-card ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--color-text-soft);
}

/* Grid and cards */

.grid {
  display: grid;
  gap: 1.5rem;
}

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

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

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

.card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.6rem;
  border: 1px solid rgba(15, 23, 42, 0.06);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
}

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

.card h3 {
  margin-top: 0;
  margin-bottom: 0.6rem;
  font-size: 1.1rem;
  color: var(--color-primary);
}

.card p {
  margin: 0;
  color: var(--color-text-soft);
}

/* Buttons & links */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.4rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--color-primary-soft);
}

.btn-secondary {
  background: #ffffff;
  color: var(--color-primary);
  border-color: rgba(15, 23, 42, 0.15);
}

.btn-secondary:hover {
  background: #f3f4f6;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  margin-top: 0.6rem;
  font-size: 0.9rem;
  color: var(--color-primary);
  text-decoration: none;
}

.link-arrow::after {
  content: "→";
  margin-left: 0.25rem;
  transition: transform 0.15s ease-out;
}

.link-arrow:hover::after {
  transform: translateX(2px);
}

/* Lists */

.bullet-list {
  margin: 0.75rem 0 0;
  padding-left: 1.2rem;
  color: var(--color-text-soft);
}

.bullet-list li {
  margin-bottom: 0.25rem;
}

/* Steps */

.steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.5rem;
  padding: 0;
  margin: 0;
}

.step {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.6rem;
  border: 1px solid rgba(15, 23, 42, 0.06);
}

.step-number {
  display: inline-flex;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: #111827;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

/* Copy helpers */

.copy-centered {
  text-align: center;
  max-width: 640px;
  margin: 0.5rem auto;
  color: var(--color-text-soft);
}

/* Two-column layout */

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

.two-column p {
  margin-top: 0;
}

/* Contact form */

.contact-form {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.9rem;
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

.form-field {
  display: flex;
  flex-direction: column;
}

.form-field label {
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.3rem;
  color: var(--color-text-soft);
}

.form-field input,
.form-field select,
.form-field textarea {
  border-radius: 0.5rem;
  border: 1px solid var(--color-border);
  padding: 0.55rem 0.7rem;
  font: inherit;
  resize: vertical;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.1);
}

.contact-panel {
  background: transparent;
  padding: 0.5rem 0 0;
}

.contact-panel h3 {
  margin-top: 0;
  color: var(--color-primary);
}

/* Footer */

.site-footer {
  margin-top: 3rem;
  background: #0a1727;
  color: #e5e7eb;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding: 2.5rem 0 1.5rem;
}

.footer-brand {
  max-width: 340px;
}

.footer-logo {
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
}

.footer-brand p {
  margin: 0;
  font-size: 0.9rem;
  color: #9ca3af;
}

.footer-columns {
  display: flex;
  gap: 2rem;
}

.footer-column h4 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
  color: #e5e7eb;
}

.footer-column ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-column li {
  margin-bottom: 0.25rem;
}

.footer-column a {
  color: #9ca3af;
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-column a:hover {
  color: #e5e7eb;
}

.footer-column p {
  margin: 0.25rem 0;
  font-size: 0.9rem;
  color: #9ca3af;
}

.footer-bottom {
  border-top: 1px solid rgba(148, 163, 184, 0.35);
  padding: 0.75rem 0 1.5rem;
}

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

.footer-disclaimer {
  margin: 0;
  font-size: 0.75rem;
  color: #9ca3af;
}

.footer-copy {
  margin: 0;
  font-size: 0.8rem;
  color: #9ca3af;
}

/* Responsive */

@media (max-width: 960px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1.1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .footer-inner {
    flex-direction: column;
  }

  .footer-columns {
    flex-wrap: wrap;
  }
}

@media (max-width: 768px) {
  .header-inner {
    padding: 0.5rem 0;
  }

  .main-nav {
    position: absolute;
    top: 60px;
    right: 0;
    left: 0;
    background: #ffffff;
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease-out;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: flex-start;
    padding: 0.75rem 1.5rem 1rem;
    gap: 0.5rem;
  }

  .site-header.nav-open .main-nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-toggle {
    display: block;
  }

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

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

  .grid-3,
  .grid-4,
  .grid-2 {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

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

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