:root {
    --sl-bg: #0f172a;
    --sl-bg-alt: #f3f4f6;
    --sl-text: #0b1120;
    --sl-muted: #6b7280;
    --sl-accent: #fbbf24;
    --sl-accent-dark: #f59e0b;
    --sl-surface: #ffffff;
    --sl-radius: 1.25rem;
    --sl-radius-pill: 999px;
    --sl-shadow-soft: 0 18px 40px rgba(15, 23, 42, 0.18);
  }
  
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }
  
  html, body {
    margin: 0;
    padding: 0;
  }
  
  body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--sl-text);
    background: #f9fafb;
  }
  
  /* Layout helpers */
  .sl-container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 1.5rem;
  }
  
  /* Header */
  .sl-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(15, 23, 42, 0.97);
    backdrop-filter: blur(12px);
    color: #f9fafb;
  }
  
  .sl-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.5rem;
  }
  
  .sl-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: inherit;
  }
  
  .sl-logo {
    width: 44px;
    height: 44px;
    border-radius: 999px;
    background: #111827;
    object-fit: contain;
  }
  
  .sl-brand-text {
    display: flex;
    flex-direction: column;
  }
  
  .sl-brand-name {
    font-weight: 700;
    letter-spacing: 0.02em;
  }
  
  .sl-brand-tagline {
    font-size: 0.8rem;
    color: #e5e7eb;
  }
  
  .sl-nav {
    display: none;
    gap: 1.5rem;
    align-items: center;
    font-size: 0.95rem;
  }
  
  .sl-nav a {
    color: #e5e7eb;
    text-decoration: none;
    transition: color 0.15s ease;
  }
  
  .sl-nav a:hover {
    color: var(--sl-accent);
  }
  
  .sl-nav-cta {
    padding: 0.45rem 0.95rem;
    border-radius: var(--sl-radius-pill);
    border: 1px solid rgba(249, 250, 251, 0.3);
  }
  
  /* Hero */
  .sl-hero {
    background: radial-gradient(circle at top left, #1e293b 0%, #020617 55%, #020617 100%);
    color: #f9fafb;
    padding: 3.5rem 0 3rem;
  }
  
  .sl-hero-inner {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: stretch;
  }
  
  .sl-hero-copy h1 {
    font-size: 2rem;
    line-height: 1.2;
    margin: 0 0 1rem;
  }
  
  .sl-hero-copy p {
    margin: 0 0 1.5rem;
    color: #e5e7eb;
  }
  
  .sl-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1rem;
  }
  
  .sl-hero-highlights {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    font-size: 0.9rem;
    color: #cbd5f5;
  }
  
  /* Buttons */
  .sl-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.7rem 1.4rem;
    border-radius: var(--sl-radius-pill);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
  }
  
  .sl-btn-primary {
    background: var(--sl-accent);
    color: #111827;
  }
  
  .sl-btn-primary:hover {
    background: var(--sl-accent-dark);
    transform: translateY(-1px);
  }
  
  .sl-btn-secondary {
    background: transparent;
    border-color: rgba(249, 250, 251, 0.4);
    color: #e5e7eb;
  }
  
  .sl-btn-secondary:hover {
    border-color: #f9fafb;
  }
  
  .sl-btn-block {
    width: 100%;
  }
  
  .sl-btn-large {
    padding-inline: 1.9rem;
  }
  
  /* Hero card */
  .sl-hero-card {
    background: rgba(15, 23, 42, 0.96);
    border-radius: var(--sl-radius);
    padding: 1.5rem 1.5rem 1.25rem;
    box-shadow: var(--sl-shadow-soft);
    border: 1px solid rgba(148, 163, 184, 0.5);
  }
  
  .sl-hero-card h2 {
    margin: 0 0 0.25rem;
    font-size: 1.25rem;
  }
  
  .sl-hero-card-sub {
    margin: 0 0 1rem;
    font-size: 0.9rem;
    color: #cbd5f5;
  }
  
  .sl-price-list {
    list-style: none;
    padding: 0;
    margin: 0 0 0.75rem;
  }
  
  .sl-price-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.35rem 0;
    font-size: 0.95rem;
    border-bottom: 1px dashed rgba(148, 163, 184, 0.5);
  }
  
  .sl-price {
    font-weight: 600;
  }
  
  .sl-hero-card-note {
    margin: 0 0 0.75rem;
    font-size: 0.8rem;
    color: #9ca3af;
  }
  
  /* Sections */
  .sl-section {
    padding: 3rem 0;
  }
  
  .sl-section-alt {
    background: var(--sl-bg-alt);
  }
  
  .sl-section h2 {
    font-size: 1.6rem;
    margin: 0 0 0.75rem;
  }
  
  .sl-section-intro {
    margin: 0 0 1.75rem;
    color: var(--sl-muted);
    max-width: 560px;
  }
  
  /* Cards & grids */
  .sl-grid {
    display: grid;
    gap: 1.5rem;
  }
  
  .sl-grid-2 {
    grid-template-columns: 1fr;
  }
  
  .sl-grid-3 {
    grid-template-columns: 1fr;
  }
  
  .sl-card {
    background: var(--sl-surface);
    border-radius: var(--sl-radius);
    padding: 1.25rem 1.3rem 1.1rem;
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.09);
  }
  
  .sl-card h3 {
    margin: 0 0 0.4rem;
  }
  
  .sl-card p {
    margin: 0 0 0.75rem;
    font-size: 0.95rem;
    color: var(--sl-muted);
  }
  
  .sl-card-list {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.9rem;
  }
  
  .sl-card-list li::before {
    content: "• ";
    color: var(--sl-accent-dark);
  }
  
  /* Steps */
  .sl-steps {
    display: grid;
    gap: 1.25rem;
  }
  
  .sl-step {
    background: #ffffff;
    border-radius: var(--sl-radius);
    padding: 1.1rem 1.2rem;
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
    position: relative;
  }
  
  .sl-step-number {
    position: absolute;
    top: 0.85rem;
    right: 1rem;
    background: #e5e7eb;
    border-radius: 999px;
    width: 1.6rem;
    height: 1.6rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 600;
    color: #374151;
  }
  
  /* Lists */
  .sl-bullet-list {
    padding-left: 1.1rem;
    margin: 0;
    font-size: 0.95rem;
  }
  
  .sl-small {
    font-size: 0.85rem;
    color: var(--sl-muted);
  }
  
  /* CTA section */
  .sl-cta-section {
    background: linear-gradient(135deg, #0f172a, #1e293b);
    color: #f9fafb;
  }
  
  .sl-cta-inner {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: flex-start;
  }
  
  /* Contact */
  .sl-contact {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
  }
  
  .sl-contact-list {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.95rem;
  }
  
  .sl-contact-list li + li {
    margin-top: 0.4rem;
  }
  
  /* Footer */
  .sl-footer {
    background: #020617;
    color: #9ca3af;
    padding: 1rem 0;
  }
  
  .sl-footer-inner {
    font-size: 0.8rem;
    text-align: center;
  }
  
  /* Responsive */
  @media (min-width: 720px) {
    .sl-nav {
      display: flex;
    }
  
    .sl-hero-inner {
      flex-direction: row;
      align-items: stretch;
    }
  
    .sl-hero-copy {
      flex: 3;
    }
  
    .sl-hero-card {
      flex: 2;
      max-width: 340px;
    }
  
    .sl-grid-2 {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }
  
    .sl-grid-3 {
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }
  
    .sl-cta-inner {
      flex-direction: row;
      justify-content: space-between;
      align-items: center;
    }
  
    .sl-contact {
      flex-direction: row;
      justify-content: space-between;
      align-items: flex-start;
    }
  }