:root {
      --navy: #1a3a6e;
      --orange: #f57c20;
      --navy-dark: #0f2548;
      --orange-light: #ffa94d;
      --cream: #fdf9f4;
      --gray-soft: #f4f6fb;
    }

    * { scroll-behavior: smooth; }

    body {
      font-family: 'DM Sans', sans-serif;
      color: #1a1a2e;
      background: #fff;
      overflow-x: hidden;
    }

    h1, h2, h3, .display-font { font-family: 'Playfair Display', serif; }

    /* ── Navbar ── */
    .navbar {
      background: rgba(255,255,255,0.97);
      backdrop-filter: blur(12px);
      border-bottom: 2px solid var(--orange);
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: 0 2px 20px rgba(26,58,110,0.08);
    }
    .navbar-brand img { height: 48px; }
    .nav-link {
      color: var(--navy) !important;
      font-weight: 500;
      font-size: 0.92rem;
      letter-spacing: 0.02em;
      padding: 0.5rem 1rem !important;
      transition: color 0.2s;
    }
    .nav-link:hover { color: var(--orange) !important; }
    .btn-enroll {
      background: var(--orange);
      color: #fff !important;
      border-radius: 6px;
      padding: 0.45rem 1.2rem !important;
      font-weight: 600;
      transition: background 0.2s, transform 0.15s;
    }
    .btn-enroll:hover { background: var(--navy); transform: translateY(-1px); }

    /* ── Hero ── */
    .hero {
      background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 55%, #1e5080 100%);
      min-height: 90vh;
      display: flex;
      align-items: center;
      position: relative;
      overflow: hidden;
    }
    .hero::before {
      content: '';
      position: absolute; inset: 0;
      background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    }
    .hero-accent {
      position: absolute;
      right: -80px; top: -80px;
      width: 520px; height: 520px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(245,124,32,0.18) 0%, transparent 70%);
      pointer-events: none;
    }
    .hero-accent2 {
      position: absolute;
      left: -60px; bottom: -60px;
      width: 380px; height: 380px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(245,124,32,0.10) 0%, transparent 70%);
      pointer-events: none;
    }
    .hero h1 {
      font-size: clamp(2.4rem, 5vw, 4rem);
      color: #fff;
      line-height: 1.15;
    }
    .hero h1 span { color: var(--orange); }
    .hero p.lead {
      color: rgba(255,255,255,0.78);
      font-size: 1.15rem;
      font-weight: 300;
      max-width: 520px;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(245,124,32,0.18);
      border: 1px solid rgba(245,124,32,0.4);
      color: var(--orange-light);
      border-radius: 30px;
      padding: 0.35rem 1rem;
      font-size: 0.82rem;
      font-weight: 600;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      margin-bottom: 1.4rem;
    }
    .btn-primary-custom {
      background: var(--orange);
      color: #fff;
      border: none;
      border-radius: 8px;
      padding: 0.75rem 2rem;
      font-size: 1rem;
      font-weight: 600;
      transition: all 0.2s;
      box-shadow: 0 4px 20px rgba(245,124,32,0.35);
    }
    .btn-primary-custom:hover { background: #e06a10; transform: translateY(-2px); color: #fff; }
    .btn-outline-custom {
      background: transparent;
      color: #fff;
      border: 2px solid rgba(255,255,255,0.35);
      border-radius: 8px;
      padding: 0.72rem 1.8rem;
      font-size: 1rem;
      font-weight: 500;
      transition: all 0.2s;
    }
    .btn-outline-custom:hover { border-color: var(--orange); color: var(--orange); }
    .hero-stats {
      display: flex;
      gap: 2.5rem;
      margin-top: 2.5rem;
      flex-wrap: wrap;
    }
    .stat-item { text-align: left; }
    .stat-num {
      font-family: 'Playfair Display', serif;
      font-size: 2rem;
      font-weight: 900;
      color: var(--orange);
      line-height: 1;
    }
    .stat-label {
      font-size: 0.78rem;
      color: rgba(255,255,255,0.6);
      text-transform: uppercase;
      letter-spacing: 0.07em;
    }
    .hero-img-wrap {
      position: relative;
      display: flex;
      justify-content: center;
      align-items: center;
    }
    .hero-logo-bg {
      width: 340px; height: 340px;
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(255,255,255,0.12);
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      position: relative;
      right: -50px;
    }
    .hero-logo-bg::before {
      content:'';
      position: absolute;
      inset: -12px;
      border-radius: 50%;
      border: 2px dashed rgba(245,124,32,0.3);
      animation: spin 20s linear infinite;
    }
    @keyframes spin { to { transform: rotate(360deg); } }
    .hero-logo-bg img { width: 700px; filter: drop-shadow(0 8px 40px rgba(0,0,0,0.3)); }

    /* ── Section Titles ── */
    .section-tag {
      display: inline-block;
      background: rgba(245,124,32,0.1);
      color: var(--orange);
      border-left: 3px solid var(--orange);
      padding: 0.2rem 0.9rem;
      font-size: 0.78rem;
      font-weight: 700;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      margin-bottom: 0.8rem;
      border-radius: 0 4px 4px 0;
    }
    .section-title {
      font-size: clamp(1.8rem, 3.5vw, 2.6rem);
      color: var(--navy-dark);
      margin-bottom: 0.5rem;
    }
    .section-sub {
      color: #6b7280;
      font-size: 1rem;
      font-weight: 300;
      max-width: 520px;
    }
    .divider-orange {
      width: 52px; height: 4px;
      background: linear-gradient(90deg, var(--orange), var(--orange-light));
      border-radius: 2px;
      margin: 1rem 0 2rem;
    }

    /* ── Courses ── */
    #courses { background: var(--gray-soft); }
    .course-card {
      background: #fff;
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid rgba(26,58,110,0.08);
      transition: transform 0.25s, box-shadow 0.25s;
      height: 100%;
    }
    .course-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 20px 60px rgba(26,58,110,0.14);
    }
    .course-card-header {
      padding: 1.8rem 1.8rem 1rem;
      position: relative;
    }
    .course-icon {
      width: 52px; height: 52px;
      border-radius: 12px;
      display: flex; align-items: center; justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 1rem;
    }
    .course-card-body { padding: 0 1.8rem 1.8rem; }
    .course-card h5 {
      font-family: 'Playfair Display', serif;
      font-size: 1.2rem;
      color: var(--navy-dark);
      margin-bottom: 0.6rem;
    }
    .course-card p { font-size: 0.88rem; color: #6b7280; margin-bottom: 1rem; }
    .course-tag {
      display: inline-block;
      background: var(--gray-soft);
      color: var(--navy);
      font-size: 0.72rem;
      font-weight: 600;
      padding: 0.2rem 0.65rem;
      border-radius: 20px;
      margin: 0.15rem;
    }
    .course-footer {
      border-top: 1px solid #f0f0f0;
      padding: 1rem 1.8rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .duration-badge {
      font-size: 0.8rem;
      color: #9ca3af;
      display: flex; align-items: center; gap: 5px;
    }
    .btn-course {
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--orange);
      text-decoration: none;
      display: flex; align-items: center; gap: 4px;
      transition: gap 0.2s;
    }
    .btn-course:hover { gap: 8px; color: var(--navy); }

    /* ── Why Us ── */
    #why { background: #fff; }
    .why-card {
      padding: 2rem;
      border-radius: 14px;
      border: 1px solid rgba(26,58,110,0.09);
      transition: border-color 0.2s, box-shadow 0.2s;
      height: 100%;
    }
    .why-card:hover {
      border-color: var(--orange);
      box-shadow: 0 8px 32px rgba(245,124,32,0.1);
    }
    .why-icon {
      width: 56px; height: 56px;
      border-radius: 14px;
      background: linear-gradient(135deg, var(--navy), #2a5298);
      display: flex; align-items: center; justify-content: center;
      color: #fff; font-size: 1.4rem;
      margin-bottom: 1.2rem;
    }
    .why-card h5 {
      font-family: 'Playfair Display', serif;
      color: var(--navy-dark);
      margin-bottom: 0.5rem;
    }
    .why-card p { font-size: 0.88rem; color: #6b7280; }

    /* ── Testimonials ── */
    #testimonials { background: var(--navy-dark); }
    .testimonial-card {
      background: rgba(255,255,255,0.06);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: 16px;
      padding: 2rem;
      height: 100%;
    }
    .testimonial-card p {
      color: rgba(255,255,255,0.82);
      font-size: 0.95rem;
      line-height: 1.75;
      font-style: italic;
    }
    .testimonial-author {
      display: flex; align-items: center; gap: 12px;
      margin-top: 1.5rem;
    }
    .author-avatar {
      width: 44px; height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--orange), var(--orange-light));
      display: flex; align-items: center; justify-content: center;
      color: #fff; font-weight: 700; font-size: 0.95rem;
    }
    .author-name { color: #fff; font-weight: 600; font-size: 0.9rem; }
    .author-role { color: rgba(255,255,255,0.5); font-size: 0.78rem; }
    .stars { color: var(--orange); font-size: 0.85rem; margin-bottom: 1rem; }

    /* ── Instructors ── */
    #instructors { background: var(--cream); }
    .instructor-card {
      text-align: center;
      padding: 2rem 1.5rem;
      border-radius: 16px;
      background: #fff;
      border: 1px solid rgba(26,58,110,0.08);
      transition: transform 0.25s, box-shadow 0.25s;
    }
    .instructor-card:hover { transform: translateY(-5px); box-shadow: 0 16px 48px rgba(26,58,110,0.12); }
    .instructor-avatar {
      width: 80px; height: 80px;
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      font-size: 2rem;
      font-weight: 700;
      color: #fff;
      margin: 0 auto 1rem;
    }
    .instructor-card h6 {
      font-family: 'Playfair Display', serif;
      color: var(--navy-dark);
      font-size: 1rem;
      margin-bottom: 0.2rem;
    }
    .instructor-card small { color: var(--orange); font-size: 0.78rem; font-weight: 600; }
    .instructor-card p { font-size: 0.82rem; color: #9ca3af; margin-top: 0.5rem; }

    /* ── CTA Banner ── */
    .cta-banner {
      background: linear-gradient(135deg, var(--orange) 0%, #e06a10 100%);
      border-radius: 20px;
      padding: 4rem 3rem;
      position: relative;
      overflow: hidden;
    }
    .cta-banner::before {
      content: '';
      position: absolute;
      right: -60px; top: -60px;
      width: 280px; height: 280px;
      border-radius: 50%;
      background: rgba(255,255,255,0.08);
    }
    .cta-banner h2 { color: #fff; font-size: clamp(1.8rem, 3vw, 2.4rem); }
    .cta-banner p { color: rgba(255,255,255,0.85); font-size: 1.05rem; }
    .btn-white {
      background: #fff;
      color: var(--orange);
      font-weight: 700;
      border: none;
      border-radius: 8px;
      padding: 0.75rem 2rem;
      font-size: 1rem;
      transition: all 0.2s;
    }
    .btn-white:hover { background: var(--navy-dark); color: #fff; transform: translateY(-2px); }

    /* ── Footer ── */
    footer {
      background: var(--navy-dark);
      color: rgba(255,255,255,0.7);
    }
    footer h6 {
      color: #fff;
      font-family: 'Playfair Display', serif;
      font-size: 1rem;
      margin-bottom: 1.2rem;
    }
    footer a {
      color: rgba(255,255,255,0.6);
      text-decoration: none;
      font-size: 0.88rem;
      display: block;
      margin-bottom: 0.5rem;
      transition: color 0.2s;
    }
    footer a:hover { color: var(--orange); }
    /* .footer-logo img { height: 52px; filter: brightness(0) invert(1); } */
    .footer-divider { border-color: rgba(255,255,255,0.1); margin: 2rem 0 1.5rem; }
    .social-btn {
      width: 36px; height: 36px;
      border-radius: 8px;
      background: rgba(255,255,255,0.08);
      display: inline-flex; align-items: center; justify-content: center;
      color: rgba(255,255,255,0.7);
      text-decoration: none;
      font-size: 1rem;
      transition: background 0.2s, color 0.2s;
      margin-right: 6px;
    }
    .social-btn:hover { background: var(--orange); color: #fff; }

    /* ── Animations ── */
    .fade-up {
      opacity: 0;
      transform: translateY(28px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .fade-up.visible { opacity: 1; transform: translateY(0); }
    .delay-1 { transition-delay: 0.1s; }
    .delay-2 { transition-delay: 0.2s; }
    .delay-3 { transition-delay: 0.3s; }
    .delay-4 { transition-delay: 0.4s; }

    /* course color accents */
    .accent-blue { background: rgba(26,58,110,0.1); color: var(--navy); }
    .accent-orange { background: rgba(245,124,32,0.1); color: var(--orange); }
    .accent-teal { background: rgba(0,128,128,0.1); color: teal; }
    .accent-purple { background: rgba(100,50,200,0.1); color: #6432c8; }
    .accent-green { background: rgba(22,163,74,0.1); color: #16a34a; }
    .accent-red { background: rgba(220,38,38,0.1); color: #dc2626; }