:root {
      /* Match main site colors */
      --gray-950: #22252b;
      --gray-900: #2a2e35;
      --gray-800: #32373f;

      --accent-green: #22c55e;
      --accent-cyan: #38bdf8;
      --accent-blue: #3b82f6;
      --accent-purple: #a855f7;
      --accent-orange: #f59e0b;

      --primary: var(--accent-green);
      --text-primary: #f8fafc;
      --text-secondary: #cbd5e1;
      --text-muted: #64748b;
      --bg-card: rgba(42, 47, 56, 0.4);
      --border: rgba(148, 163, 184, 0.1);
      --light-subtle: rgba(255, 255, 255, 0.05);
      --shadow-deep: rgba(0, 0, 0, 0.6);
    }

    html[data-theme="light"] {
      --gray-950: #f8fafc;
      --gray-900: #f1f5f9;
      --gray-800: #e2e8f0;
      --primary: #22c55e;
      --text-primary: #0f172a;
      --text-secondary: #334155;
      --text-muted: #64748b;
      --bg-card: rgba(255, 255, 255, 0.85);
      --border: rgba(15, 23, 42, 0.12);
      --light-subtle: rgba(15, 23, 42, 0.04);
      --shadow-deep: rgba(15, 23, 42, 0.15);
    }

    @supports (color: oklch(0% 0 0)) {
      :root {
        --accent-green: oklch(70% 0.22 145);
        --accent-cyan: oklch(75% 0.18 195);
        --accent-blue: oklch(65% 0.22 245);
        --accent-purple: oklch(65% 0.25 295);
        --accent-orange: oklch(75% 0.20 65);
        --primary: var(--accent-green);
      }

      html[data-theme="light"] {
        --primary: oklch(55% 0.18 145);
      }
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
      background: var(--gray-950);
      color: var(--text-primary);
      line-height: 1.6;
      min-height: 100vh;
      overflow-x: hidden;
    }

    body::before {
      content: '';
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background:
        radial-gradient(ellipse at 20% 30%, rgba(16, 185, 129, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(168, 85, 247, 0.06) 0%, transparent 50%);
      pointer-events: none;
      z-index: -1;
    }

    html[data-theme="light"] body::before {
      background:
        radial-gradient(ellipse at 20% 30%, rgba(16, 185, 129, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(168, 85, 247, 0.08) 0%, transparent 50%);
    }

    .container {
      max-width: min(1400px, calc(100% - 3rem));
      margin: 0 auto;
      padding: 0 1.5rem;
    }

    /* Header */
    header {
      padding: clamp(0.75rem, 2vh, 1.5rem) 0;
      border-bottom: 1px solid var(--border);
      background: rgba(10, 15, 26, 0.8);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      position: sticky;
      top: 0;
      z-index: 100;
      color-scheme: dark;
    }

    html[data-theme="light"] header {
      background: rgba(248, 250, 252, 0.9);
      color-scheme: light;
    }

    nav {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 1rem;
    }

    .back-link {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      color: var(--text-secondary);
      text-decoration: none;
      font-size: 0.9rem;
      background-image: linear-gradient(90deg, var(--primary), var(--accent-purple));
      background-size: 0% 100%;
      background-repeat: no-repeat;
      background-position: 0 100%;
      -webkit-background-clip: text;
      background-clip: text;
      transition: color 0.3s ease, text-shadow 0.3s ease, background-size 0.6s ease;
    }

    .back-link:hover {
      color: transparent;
      -webkit-text-fill-color: transparent;
      background-size: 100% 100%;
      text-shadow:
        0 0 12px color-mix(in oklch, var(--primary) 50%, transparent),
        0 0 22px color-mix(in oklch, var(--accent-purple) 40%, transparent);
    }

    .back-link svg {
      width: 18px;
      height: 18px;
      color: var(--text-secondary);
      transition: color 0.3s ease, filter 0.3s ease;
    }

    .back-link:hover svg {
      color: var(--primary);
      filter: drop-shadow(0 0 8px color-mix(in oklch, var(--primary) 60%, transparent));
    }

    .logo {
      font-size: clamp(1.1rem, 3vw, 1.3rem);
      font-weight: 700;
      background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
      background-size: 200% 200%;
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      text-decoration: none;
      letter-spacing: -0.01em;
      transition: opacity 0.2s ease, text-shadow 0.3s ease, filter 0.3s ease;
    }

    .logo:hover {
      opacity: 1;
      text-shadow:
        0 0 12px color-mix(in oklch, var(--accent-cyan) 55%, transparent),
        0 0 24px color-mix(in oklch, var(--accent-purple) 45%, transparent);
      filter: drop-shadow(0 0 10px rgba(56, 189, 248, 0.25));
      animation: logoShimmer 2.4s ease-in-out infinite;
    }

    @keyframes logoShimmer {
      0%, 100% {
        background-position: 0% 50%;
      }
      50% {
        background-position: 100% 50%;
      }
    }

    .nav-spacer {
      width: 80px;
    }

    /* Footer */
    .site-footer {
      padding: clamp(1.5rem, 3vh, 2.5rem) 0;
      border-top: 1px solid var(--border);
    }

    .footer-content {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      align-items: center;
      gap: 1.25rem;
      margin-bottom: clamp(1rem, 2vh, 1.5rem);
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: clamp(1rem, 3vw, 2rem);
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .footer-links a {
      color: var(--text-secondary);
      text-decoration: none;
      font-size: clamp(0.85rem, 1.5vw, 0.95rem);
      transition: color 0.2s;
    }

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

    .theme-toggle {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      position: relative;
      width: 42px;
      height: 42px;
      padding: 0;
      border-radius: 999px;
      border: 1px solid var(--border);
      background: rgba(34, 37, 43, 0.6);
      color: var(--text-secondary);
      font-size: 0.85rem;
      cursor: pointer;
      transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
    }

    html[data-theme="light"] .theme-toggle {
      background: rgba(255, 255, 255, 0.8);
    }

    .theme-toggle:hover {
      color: var(--text-primary);
      border-color: rgba(16, 185, 129, 0.3);
    }

    .theme-toggle-icon {
      display: inline-flex;
      position: relative;
      width: 18px;
      height: 18px;
    }

    .theme-toggle-icon svg {
      position: absolute;
      inset: 0;
      width: 18px;
      height: 18px;
      transition: opacity 0.2s ease, transform 0.2s ease;
    }

    .theme-toggle-icon .icon-sun {
      opacity: 0;
      transform: rotate(-90deg);
    }

    html[data-theme="light"] .theme-toggle-icon .icon-sun {
      opacity: 1;
      transform: rotate(0deg);
    }

    html[data-theme="light"] .theme-toggle-icon .icon-moon {
      opacity: 0;
      transform: rotate(90deg);
    }

    .theme-toggle-label {
      position: absolute;
      width: 1px;
      height: 1px;
      padding: 0;
      margin: -1px;
      overflow: hidden;
      clip: rect(0, 0, 0, 0);
      white-space: nowrap;
      border: 0;
    }

    .footer-copy {
      color: var(--text-muted);
      font-size: clamp(0.8rem, 1.5vw, 0.9rem);
    }

    @media (max-width: 640px) {
      .footer-content {
        grid-template-columns: minmax(0, 1fr) auto;
        gap: 0.75rem;
      }
    }

    /* ============================================================================
       Scrollbars
       ============================================================================ */

    :root {
      --scrollbar-thumb: rgba(148, 163, 184, 0.45);
      --scrollbar-track: rgba(15, 23, 42, 0.12);
    }

    html[data-theme="light"] {
      --scrollbar-thumb: rgba(15, 23, 42, 0.35);
      --scrollbar-track: rgba(15, 23, 42, 0.08);
    }

    * {
      scrollbar-width: thin;
      scrollbar-color: var(--scrollbar-thumb) transparent;
    }

    *::-webkit-scrollbar {
      width: 8px;
      height: 8px;
    }

    *::-webkit-scrollbar-track {
      background: transparent;
    }

    *::-webkit-scrollbar-thumb {
      background-color: var(--scrollbar-thumb);
      border-radius: 999px;
      border: 2px solid transparent;
      background-clip: content-box;
    }

    /* Hero */
    .hero {
      padding: clamp(3rem, 8vw, 6rem) 0 clamp(2rem, 6vw, 4rem);
      text-align: center;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      padding: 0.5rem 1rem;
      background: rgba(14, 165, 233, 0.12);
      border: 1px solid rgba(14, 165, 233, 0.3);
      border-radius: 2rem;
      font-size: clamp(0.8rem, 2vw, 0.9rem);
      color: var(--accent-cyan);
      margin-bottom: 1.5rem;
    }

    .hero-badge svg {
      width: 16px;
      height: 16px;
    }

    h1 {
      font-size: clamp(2.3rem, 5vw + 0.8rem, 4.1rem);
      font-weight: 700;
      margin-bottom: 1rem;
      line-height: 1.1;
      text-shadow:
        0 1px 0 rgba(255, 255, 255, 0.2),
        0 2px 2px rgba(0, 0, 0, 0.4),
        0 4px 8px rgba(0, 0, 0, 0.2),
        0 0 40px rgba(14, 165, 233, 0.18);
      letter-spacing: -0.02em;
      max-width: 22ch;
      margin-left: auto;
      margin-right: auto;
    }

    .gradient-text {
      background: linear-gradient(135deg, var(--accent-green), var(--accent-cyan));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      background-size: 200% 200%;
      animation: gradientFlow 8s ease infinite;
    }

    @keyframes gradientFlow {
      0%, 100% { background-position: 0% 50%; }
      50% { background-position: 100% 50%; }
    }

    .hero-description {
      font-size: clamp(1rem, 2.5vw, 1.2rem);
      color: var(--text-secondary);
      max-width: 700px;
      margin: 0 auto 2.5rem;
      line-height: 1.7;
    }

    .cta-button {
      display: inline-flex;
      align-items: center;
      gap: 0.75rem;
      padding: 1rem 2rem;
      background: rgba(148, 163, 184, 0.1);
      border: 1px solid rgba(148, 163, 184, 0.3);
      border-radius: 0.75rem;
      color: var(--text-muted);
      text-decoration: none;
      font-weight: 600;
      font-size: 1rem;
      cursor: not-allowed;
      opacity: 0.6;
    }

    .cta-button svg {
      width: 20px;
      height: 20px;
    }

    /* Features Grid */
    .features {
      padding: clamp(2rem, 6vw, 4rem) 0;
    }

    .features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
      gap: clamp(1.25rem, 3vw, 2rem);
      margin-top: clamp(2rem, 5vw, 3rem);
    }

    .feature-card {
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 1rem;
      padding: clamp(1.5rem, 4vw, 2rem);
      transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
      backdrop-filter: blur(16px) saturate(180%);
      -webkit-backdrop-filter: blur(16px) saturate(180%);
      box-shadow:
        inset 0 1px 0 var(--light-subtle),
        0 8px 32px var(--shadow-deep);
      position: relative;
      overflow: hidden;
    }

    .feature-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--accent-color-1), var(--accent-color-2));
      opacity: 0;
      transition: opacity 0.3s;
    }

    .feature-card:hover::before {
      opacity: 1;
    }

    .feature-card:hover {
      transform: translateY(-8px) scale(1.02);
      border-color: var(--accent-color-1);
      box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.12),
        0 16px 64px rgba(0, 0, 0, 0.5),
        0 0 40px rgba(var(--accent-rgb), 0.2);
    }

    .feature-card:nth-child(1) {
      --accent-color-1: var(--accent-purple);
      --accent-color-2: var(--accent-blue);
      --accent-rgb: 168, 85, 247;
      border-color: rgba(168, 85, 247, 0.25);
    }

    .feature-card:nth-child(2) {
      --accent-color-1: var(--accent-blue);
      --accent-color-2: var(--accent-cyan);
      --accent-rgb: 59, 130, 246;
      border-color: rgba(59, 130, 246, 0.25);
    }

    .feature-card:nth-child(3) {
      --accent-color-1: var(--accent-cyan);
      --accent-color-2: var(--accent-green);
      --accent-rgb: 6, 182, 212;
      border-color: rgba(6, 182, 212, 0.25);
    }

    .feature-icon {
      width: clamp(48px, 10vw, 56px);
      height: clamp(48px, 10vw, 56px);
      display: flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, var(--accent-color-1), var(--accent-color-2));
      border-radius: 0.75rem;
      margin-bottom: 1.25rem;
      transition: all 0.3s;
    }

    .feature-card:hover .feature-icon {
      transform: scale(1.1) rotate(5deg);
    }

    .feature-icon svg {
      width: clamp(24px, 5vw, 28px);
      height: clamp(24px, 5vw, 28px);
      stroke: white;
      stroke-width: 2;
      fill: none;
    }

    .feature-card h3 {
      font-size: clamp(1.2rem, 3vw, 1.5rem);
      font-weight: 600;
      margin-bottom: 0.75rem;
      text-shadow:
        0 1px 0 rgba(255, 255, 255, 0.1),
        0 2px 4px rgba(0, 0, 0, 0.2);
      letter-spacing: -0.01em;
    }

    .feature-card p {
      color: var(--text-secondary);
      font-size: clamp(0.9rem, 2vw, 1rem);
      line-height: 1.6;
    }

    /* Footer */
    footer {
      margin-top: clamp(4rem, 8vw, 6rem);
      padding: clamp(2rem, 5vw, 3rem) 0;
      border-top: 1px solid var(--border);
      text-align: center;
    }

    footer p {
      color: var(--text-muted);
      font-size: clamp(0.85rem, 1.8vw, 0.95rem);
    }