/* ===== RESET & BASE ===== */
    *, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
      color: #e2e8f0;
      line-height: 1.6;
      overflow-x: hidden;
      background: #0B0F19;
    }
    a { text-decoration: none; color: inherit; }
    ul { list-style: none; }
    img { max-width: 100%; display: block; }

    /* ===== CSS VARIABLES ===== */
    :root {
      --bg: #0B0F19;
      --bg-card: #111827;
      --bg-card-hover: #1a2035;
      --cyan: #06B6D4;
      --purple: #8B5CF6;
      --gradient: linear-gradient(135deg, #06B6D4, #8B5CF6);
      --gradient-text: linear-gradient(135deg, #06B6D4, #A78BFA);
      --text: #f1f5f9;
      --text-muted: #94a3b8;
      --border: rgba(255,255,255,0.08);
      --border-light: rgba(255,255,255,0.12);
      --shadow: 0 4px 24px rgba(0,0,0,0.3);
      --radius: 12px;
      --transition: 0.3s ease;
    }

    /* ===== NAVBAR ===== */
    .navbar {
      position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
      background: rgba(11,15,25,0.9);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border);
      padding: 0 60px;
      height: 72px;
      display: flex; align-items: center; justify-content: space-between;
      transition: var(--transition);
    }
    .nav-logo {
      display: flex; align-items: center; gap: 8px;
      font-size: 1.3rem; font-weight: 700;
      color: var(--text);
    }
    .nav-logo-ai {
      background: var(--gradient);
      color: #fff;
      font-size: 0.7rem;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: 4px;
      letter-spacing: 1px;
    }
    .nav-links { display: flex; align-items: center; gap: 28px; }
    .nav-links a {
      font-size: 0.88rem; font-weight: 500;
      color: var(--text-muted);
      transition: var(--transition);
    }
    .nav-links a:hover, .nav-links a.active { color: var(--text); }
    .nav-auth { display: flex; align-items: center; gap: 16px; }
    .nav-signin {
      font-size: 0.88rem; font-weight: 500;
      color: var(--text-muted);
      transition: var(--transition);
    }
    .nav-signin:hover { color: var(--text); }
    .nav-cta {
      padding: 10px 22px;
      background: var(--gradient);
      color: #fff;
      font-weight: 600;
      font-size: 0.88rem;
      border-radius: 8px;
      transition: var(--transition);
    }
    .nav-cta:hover { opacity: 0.9; transform: translateY(-1px); }
    .nav-toggle { display: none; cursor: pointer; font-size: 1.5rem; color: var(--text); }

    /* ===== HERO ===== */
    .hero {
      padding: 140px 60px 80px;
      background: var(--bg);
      position: relative;
      overflow: hidden;
    }
    .hero::before {
      content: '';
      position: absolute;
      top: -200px; right: -200px;
      width: 600px; height: 600px;
      background: radial-gradient(circle, rgba(6,182,212,0.08) 0%, transparent 70%);
      border-radius: 50%;
    }
    .hero-inner {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      max-width: 1200px;
      margin: 0 auto;
      align-items: center;
    }
    .hero-badge {
      display: inline-flex; align-items: center; gap: 8px;
      background: rgba(6,182,212,0.1);
      border: 1px solid rgba(6,182,212,0.2);
      padding: 6px 16px;
      border-radius: 20px;
      font-size: 0.82rem;
      color: var(--cyan);
      margin-bottom: 24px;
    }
    .hero-badge span { color: var(--text-muted); }
    .hero-text h1 {
      font-size: 3.2rem;
      font-weight: 800;
      line-height: 1.15;
      margin-bottom: 20px;
    }
    .hero-text h1 .gradient-text {
      background: var(--gradient-text);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .hero-text p {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 32px;
      max-width: 480px;
    }
    .hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }
    .btn-gradient {
      display: inline-flex; align-items: center; gap: 8px;
      padding: 14px 28px;
      background: var(--gradient);
      color: #fff;
      font-weight: 600;
      font-size: 0.95rem;
      border-radius: 8px;
      border: none;
      cursor: pointer;
      transition: var(--transition);
    }
    .btn-gradient:hover { opacity: 0.9; transform: translateY(-2px); }
    .btn-outline-dark {
      display: inline-flex; align-items: center; gap: 8px;
      padding: 14px 28px;
      background: transparent;
      color: var(--text);
      font-weight: 600;
      font-size: 0.95rem;
      border-radius: 8px;
      border: 1px solid var(--border-light);
      cursor: pointer;
      transition: var(--transition);
    }
    .btn-outline-dark:hover { border-color: var(--cyan); color: var(--cyan); }
    .hero-stats {
      display: flex; gap: 48px;
    }
    .stat-item .stat-number {
      font-size: 2rem;
      font-weight: 800;
      background: var(--gradient-text);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .stat-item .stat-label {
      font-size: 0.75rem;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 1px;
    }
    .hero-visual {
      position: relative;
    }
    .hero-image-wrapper {
      position: relative;
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid var(--border);
      background: var(--bg-card);
      padding: 16px;
    }
    .hero-image-wrapper img {
      width: 100%;
      height: 320px;
      object-fit: cover;
      border-radius: 10px;
    }
    .hero-float-card {
      position: absolute;
      bottom: -20px; right: -10px;
      background: var(--gradient);
      color: #fff;
      padding: 20px 28px;
      border-radius: 12px;
      text-align: center;
      box-shadow: 0 8px 32px rgba(6,182,212,0.3);
    }
    .hero-float-card .float-number {
      font-size: 2rem;
      font-weight: 800;
    }
    .hero-float-card .float-label {
      font-size: 0.8rem;
      opacity: 0.9;
    }

    /* ===== TRUSTED BY ===== */
    .trusted {
      padding: 60px;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      text-align: center;
    }
    .trusted p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 28px;
      opacity: 0.6;
    }
    .trusted-logos {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 48px;
      flex-wrap: wrap;
    }
    .trusted-logos span {
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-muted);
      opacity: 0.5;
      letter-spacing: 1px;
    }

    /* ===== SECTION COMMON ===== */
    .section { padding: 100px 60px; }
    .section-label {
      font-size: 0.8rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 3px;
      color: var(--cyan);
      margin-bottom: 12px;
      text-align: center;
    }
    .section-title {
      font-size: 2.4rem;
      font-weight: 800;
      text-align: center;
      margin-bottom: 12px;
    }
    .section-title .gradient-text {
      background: var(--gradient-text);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .section-subtitle {
      text-align: center;
      font-size: 1rem;
      color: var(--text-muted);
      margin-bottom: 50px;
    }

    /* ===== FEATURES ===== */
    .features { background: var(--bg); }
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      max-width: 1200px;
      margin: 0 auto;
    }
    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 36px 28px;
      transition: var(--transition);
    }
    .feature-card:hover {
      border-color: rgba(6,182,212,0.3);
      transform: translateY(-4px);
      box-shadow: 0 8px 32px rgba(0,0,0,0.3);
    }
    .feature-icon {
      width: 48px; height: 48px;
      margin-bottom: 20px;
      display: flex; align-items: center; justify-content: center;
    }
    .feature-icon svg { width: 36px; height: 36px; }
    .feature-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text);
    }
    .feature-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .feature-link {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--cyan);
      transition: var(--transition);
    }
    .feature-link:hover { color: #22d3ee; }

    /* ===== PRICING ===== */
    .pricing { background: var(--bg); }
    .pricing-toggle {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 50px;
    }
    .pricing-toggle span {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
    }
    .pricing-toggle span.active { color: var(--text); }
    .toggle-switch {
      width: 52px; height: 28px;
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: 14px;
      position: relative;
      cursor: pointer;
      transition: var(--transition);
    }
    .toggle-switch::after {
      content: '';
      position: absolute;
      top: 3px; left: 3px;
      width: 20px; height: 20px;
      background: var(--cyan);
      border-radius: 50%;
      transition: var(--transition);
    }
    .toggle-switch.annual::after { left: 27px; }
    .save-badge {
      background: rgba(6,182,212,0.15);
      color: var(--cyan);
      font-size: 0.72rem;
      font-weight: 600;
      padding: 3px 10px;
      border-radius: 10px;
    }
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      max-width: 1100px;
      margin: 0 auto;
      align-items: start;
    }
    .pricing-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 36px 28px;
      text-align: center;
      transition: var(--transition);
      position: relative;
    }
    .pricing-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 8px 32px rgba(0,0,0,0.3);
    }
    .pricing-card.featured {
      border-color: var(--cyan);
      box-shadow: 0 0 40px rgba(6,182,212,0.1);
    }
    .popular-tag {
      position: absolute;
      top: -14px; left: 50%;
      transform: translateX(-50%);
      background: var(--gradient);
      color: #fff;
      font-size: 0.7rem;
      font-weight: 700;
      padding: 5px 20px;
      border-radius: 20px;
      text-transform: uppercase;
      letter-spacing: 1px;
    }
    .pricing-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .pricing-card .price {
      font-size: 3rem;
      font-weight: 800;
      color: var(--text);
      margin-bottom: 4px;
    }
    .pricing-card .price .dollar { font-size: 1.5rem; vertical-align: super; }
    .pricing-card .price .period {
      font-size: 0.9rem;
      font-weight: 400;
      color: var(--text-muted);
    }
    .pricing-card .price-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 28px;
    }
    .pricing-features {
      text-align: left;
      margin-bottom: 28px;
    }
    .pricing-features li {
      font-size: 0.88rem;
      padding: 10px 0;
      display: flex; align-items: center; gap: 10px;
      color: var(--text);
      border-bottom: 1px solid var(--border);
    }
    .pricing-features li:last-child { border-bottom: none; }
    .pricing-features li .check { color: var(--cyan); font-weight: 700; }
    .pricing-features li .cross { color: #475569; }
    .pricing-features li.disabled { color: #475569; }
    .btn-pricing {
      display: block;
      width: 100%;
      padding: 14px;
      font-weight: 600;
      font-size: 0.95rem;
      border-radius: 8px;
      border: 1px solid var(--border-light);
      background: transparent;
      color: var(--text);
      cursor: pointer;
      transition: var(--transition);
    }
    .btn-pricing:hover { border-color: var(--cyan); color: var(--cyan); }
    .pricing-card.featured .btn-pricing {
      background: var(--gradient);
      border-color: transparent;
      color: #fff;
    }
    .pricing-card.featured .btn-pricing:hover { opacity: 0.9; }

    /* ===== FOOTER ===== */
    .footer {
      background: var(--bg);
      border-top: 1px solid var(--border);
      padding: 80px 60px 30px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      max-width: 1200px;
      margin: 0 auto;
      padding-bottom: 40px;
      border-bottom: 1px solid var(--border);
    }
    .footer-brand .nav-logo { margin-bottom: 16px; }
    .footer-brand p {
      font-size: 0.88rem;
      line-height: 1.7;
      color: var(--text-muted);
      margin-bottom: 20px;
    }
    .social-links { display: flex; gap: 10px; }
    .social-links a {
      width: 38px; height: 38px;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      transition: var(--transition);
    }
    .social-links a:hover { border-color: var(--cyan); }
    .social-links svg { width: 16px; height: 16px; fill: var(--text-muted); }
    .footer h4 {
      color: var(--text);
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .footer ul li { margin-bottom: 10px; }
    .footer ul li a {
      font-size: 0.88rem;
      color: var(--text-muted);
      transition: var(--transition);
    }
    .footer ul li a:hover { color: var(--text); }
    .footer-bottom {
      max-width: 1200px;
      margin: 0 auto;
      padding-top: 24px;
      font-size: 0.82rem;
      color: rgba(255,255,255,0.3);
    }

    /* ===== ANIMATIONS ===== */
    .fade-up {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .fade-up.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* ===== RESPONSIVE ===== */
    @media (max-width: 1024px) {
      .navbar { padding: 0 30px; }
      .hero { padding: 120px 30px 60px; }
      .hero-inner { grid-template-columns: 1fr; }
      .hero-text h1 { font-size: 2.6rem; }
      .section { padding: 80px 30px; }
      .features-grid { grid-template-columns: repeat(2, 1fr); }
      .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
      .trusted { padding: 40px 30px; }
    }
    @media (max-width: 768px) {
      .nav-links, .nav-auth { display: none; }
      .nav-toggle { display: block; }
      .nav-links.open, .nav-auth.open {
        display: flex; flex-direction: column;
        position: absolute; top: 72px; left: 0; right: 0;
        background: var(--bg); padding: 20px 30px;
        border-bottom: 1px solid var(--border);
        gap: 16px;
      }
      .hero-text h1 { font-size: 2rem; }
      .hero-stats { gap: 24px; }
      .stat-item .stat-number { font-size: 1.5rem; }
      .features-grid { grid-template-columns: 1fr; }
      .section-title { font-size: 1.8rem; }
      .footer-grid { grid-template-columns: 1fr; }
      .trusted-logos { gap: 24px; }
    }