/* ── Reset & Base ── */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
      color: #1a1a2e;
      background: #ffffff;
      line-height: 1.6;
    }
    a { text-decoration: none; color: inherit; }
    img { max-width: 100%; display: block; }

    /* ── Variables ── */
    :root {
      --primary: #2563eb;
      --primary-dark: #1d4ed8;
      --accent: #06b6d4;
      --text: #1a1a2e;
      --muted: #6b7280;
      --light: #f8fafc;
      --border: #e2e8f0;
      --radius: 12px;
      --shadow: 0 4px 24px rgba(0,0,0,0.08);
    }

    /* ── Nav ── */
    nav {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 100;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 5%;
      height: 68px;
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
    }
    .nav-logo img {
      height: 42px;
      width: auto;
      display: block;
    }
    .nav-links {
      display: flex;
      gap: 2rem;
      list-style: none;
    }
    .nav-links a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--muted);
      transition: color 0.2s;
    }
    .nav-links a:hover { color: var(--primary); }
    .nav-cta {
      background: var(--primary);
      color: #fff !important;
      padding: 0.5rem 1.25rem;
      border-radius: 999px;
      font-weight: 600 !important;
      transition: background 0.2s !important;
    }
    .nav-cta:hover { background: var(--primary-dark) !important; color: #fff; }

    /* ── Hero ── */
    #hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      padding: 100px 5% 60px;
      background: linear-gradient(135deg, #eff6ff 0%, #ecfeff 100%);
      position: relative;
      overflow: hidden;
    }
    #hero::before {
      content: '';
      position: absolute;
      width: 600px; height: 600px;
      background: radial-gradient(circle, rgba(37,99,235,0.12) 0%, transparent 70%);
      top: -100px; right: -100px;
      border-radius: 50%;
    }
    #hero::after {
      content: '';
      position: absolute;
      width: 400px; height: 400px;
      background: radial-gradient(circle, rgba(6,182,212,0.1) 0%, transparent 70%);
      bottom: -80px; left: -80px;
      border-radius: 50%;
    }
    .hero-inner { position: relative; z-index: 1; max-width: 780px; }
    .hero-badge {
      display: inline-block;
      background: rgba(37,99,235,0.1);
      color: var(--primary);
      padding: 0.35rem 1rem;
      border-radius: 999px;
      font-size: 0.85rem;
      font-weight: 600;
      letter-spacing: 0.04em;
      margin-bottom: 1.5rem;
      text-transform: uppercase;
    }
    #hero h1 {
      font-size: clamp(2.4rem, 6vw, 4rem);
      font-weight: 800;
      letter-spacing: -1.5px;
      line-height: 1.1;
      margin-bottom: 1.25rem;
      color: var(--text);
    }
    #hero h1 em {
      font-style: normal;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    #hero p {
      font-size: 1.15rem;
      color: var(--muted);
      max-width: 560px;
      margin: 0 auto 2.5rem;
    }
    .hero-buttons { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
    .btn-primary {
      background: var(--primary);
      color: #fff;
      padding: 0.85rem 2rem;
      border-radius: 999px;
      font-weight: 600;
      font-size: 1rem;
      transition: background 0.2s, transform 0.15s;
      box-shadow: 0 4px 14px rgba(37,99,235,0.3);
    }
    .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }
    .btn-secondary {
      background: #fff;
      color: var(--primary);
      padding: 0.85rem 2rem;
      border-radius: 999px;
      font-weight: 600;
      font-size: 1rem;
      border: 2px solid var(--primary);
      transition: all 0.2s;
    }
    .btn-secondary:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

    /* ── Section Shared ── */
    section { padding: 90px 5%; }
    .section-label {
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.1em;
      color: var(--primary);
      margin-bottom: 0.6rem;
    }
    .section-title {
      font-size: clamp(1.8rem, 4vw, 2.6rem);
      font-weight: 800;
      letter-spacing: -0.5px;
      line-height: 1.2;
      margin-bottom: 1rem;
    }
    .section-sub {
      color: var(--muted);
      font-size: 1.05rem;
      max-width: 560px;
    }

    /* ── Services ── */
    #services { background: var(--light); }
    .services-header { text-align: center; margin-bottom: 3.5rem; }
    .services-header .section-sub { margin: 0 auto; }
    .services-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 1.5rem;
      max-width: 1100px;
      margin: 0 auto;
    }
    .service-card {
      background: #fff;
      border-radius: var(--radius);
      padding: 2rem;
      box-shadow: var(--shadow);
      border: 1px solid var(--border);
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .service-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.12); }
    .service-icon {
      width: 52px; height: 52px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.25rem;
      font-size: 1.5rem;
    }
    .service-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.5rem; }
    .service-card p { color: var(--muted); font-size: 0.95rem; }

    /* ── About ── */
    #about {
      display: flex;
      align-items: center;
      gap: 4rem;
      max-width: 1100px;
      margin: 0 auto;
      padding: 90px 5%;
    }
    .about-visual {
      flex: 1;
      min-width: 280px;
      background: linear-gradient(135deg, #eff6ff 0%, #ecfeff 100%);
      border-radius: 24px;
      aspect-ratio: 4/3;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 5rem;
      box-shadow: var(--shadow);
      border: 1px solid var(--border);
    }
    .about-content { flex: 1; }
    .about-content .section-sub { margin-bottom: 1.5rem; }
    .stats {
      display: flex;
      gap: 2rem;
      margin-top: 2rem;
      flex-wrap: wrap;
    }
    .stat h4 {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -1px;
    }
    .stat p { color: var(--muted); font-size: 0.9rem; }

    /* ── Contact ── */
    #contact { background: var(--light); text-align: center; }
    .contact-inner { max-width: 580px; margin: 0 auto; }
    .contact-inner .section-sub { margin: 0 auto 2.5rem; }
    .contact-form { display: flex; flex-direction: column; gap: 1rem; text-align: left; }
    .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
    .contact-form input,
    .contact-form textarea {
      width: 100%;
      padding: 0.85rem 1.1rem;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      font-size: 0.95rem;
      font-family: inherit;
      background: #fff;
      color: var(--text);
      transition: border-color 0.2s, box-shadow 0.2s;
      outline: none;
    }
    .contact-form input:focus,
    .contact-form textarea:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
    }
    .contact-form textarea { resize: vertical; min-height: 130px; }
    .contact-form button {
      background: var(--primary);
      color: #fff;
      padding: 0.9rem;
      border: none;
      border-radius: 999px;
      font-size: 1rem;
      font-weight: 600;
      cursor: pointer;
      transition: background 0.2s, transform 0.15s;
      box-shadow: 0 4px 14px rgba(37,99,235,0.3);
    }
    .contact-form button:hover { background: var(--primary-dark); transform: translateY(-2px); }

    /* ── Footer ── */
    footer {
      background: var(--text);
      color: rgba(255,255,255,0.7);
      padding: 2.5rem 5%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 1rem;
    }
    footer .footer-logo { color: #fff; font-size: 1.1rem; font-weight: 700; }
    footer .footer-logo span { color: var(--accent); }
    footer p { font-size: 0.88rem; }
    .footer-links { display: flex; gap: 1.5rem; }
    .footer-links a { font-size: 0.88rem; transition: color 0.2s; }
    .footer-links a:hover { color: #fff; }

    /* ── Responsive ── */
    @media (max-width: 768px) {
      #about { flex-direction: column; gap: 2rem; }
      .about-visual { width: 100%; }
      .form-row { grid-template-columns: 1fr; }
      .nav-links { display: none; }
    }