:root {
    --bg: #0a0a0f;
    --surface: #111118;
    --border: rgba(255,255,255,0.07);
    --text: #e8e8f0;
    --muted: #6b6b80;
    --accent: #00e5a0;
    --accent2: #ff6b35;
    --accent3: #7c6aff;
  }

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

  html { scroll-behavior: smooth; }

  body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Outfit', sans-serif;
    font-weight: 300;
    overflow-x: hidden;
  }

  /* ─── NOISE TEXTURE ─── */
  body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 0;
    opacity: 0.4;
  }

  /* ─── NAV ─── */
  nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.2rem 3rem;
    background: rgba(10,10,15,0.8);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
  }
  .logo {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: 1.4rem;
    letter-spacing: -0.03em;
    color: var(--text);
  }
  .logo span { color: var(--accent); }

  nav ul {
    list-style: none;
    display: flex; gap: 2rem;
  }
  nav ul a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.9rem;
    letter-spacing: 0.04em;
    transition: color 0.2s;
  }
  nav ul a:hover { color: var(--text); }

  .nav-cta {
    background: var(--accent);
    color: #0a0a0f !important;
    font-weight: 600 !important;
    padding: 0.5rem 1.2rem;
    border-radius: 6px;
    transition: opacity 0.2s !important;
  }
  .nav-cta:hover { opacity: 0.85; }

  /* ─── SEARCH TOGGLE BUTTON ─── */
  .search-toggle-btn {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
    color: var(--muted);
    font-family: 'DM Mono', monospace;
    font-size: 0.75rem;
    padding: 0.4rem 0.85rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
  }
  .search-toggle-btn:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.15);
    color: var(--text);
  }
  .search-kbd {
    font-family: 'DM Mono', monospace;
    font-size: 0.6rem;
    padding: 0.15rem 0.4rem;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--muted);
  }

  /* ─── SEARCH OVERLAY ─── */
  .search-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.7);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    z-index: 300;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s;
  }
  .search-overlay.visible { opacity: 1; pointer-events: auto; }

  /* ─── SEARCH BOX ─── */
  .search-box {
    position: fixed;
    top: 80px; left: 50%; transform: translateX(-50%) translateY(-20px);
    width: min(680px, 92vw);
    background: #13131a;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    z-index: 400;
    box-shadow: 0 32px 80px rgba(0,0,0,0.6), 0 0 0 1px rgba(0,229,160,0.08);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s, transform 0.25s;
    overflow: hidden;
    max-height: 70vh;
    display: flex; flex-direction: column;
  }
  .search-box.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
  }

  .search-header {
    padding: 1rem 1.2rem;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    flex-shrink: 0;
  }
  .search-input-wrap {
    display: flex; align-items: center; gap: 0.75rem;
  }
  .search-icon-svg { color: var(--muted); flex-shrink: 0; }
  .search-input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--text);
    font-family: 'Outfit', sans-serif;
    font-size: 1rem;
    font-weight: 300;
  }
  .search-input::placeholder { color: var(--muted); }
  .search-esc {
    font-family: 'DM Mono', monospace;
    font-size: 0.6rem;
    padding: 0.2rem 0.5rem;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--muted);
    flex-shrink: 0;
  }

  /* ─── SEARCH RESULTS ─── */
  .search-results {
    overflow-y: auto;
    flex: 1;
  }
  .search-results.has-results { padding: 0.5rem; }
  .search-results::-webkit-scrollbar { width: 4px; }
  .search-results::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 2px; }

  .search-result-item {
    display: flex; align-items: center; gap: 1rem;
    padding: 0.75rem 1rem;
    border-radius: 10px;
    text-decoration: none;
    color: var(--text);
    transition: background 0.15s;
    cursor: pointer;
  }
  .search-result-item:hover { background: rgba(255,255,255,0.05); }

  .sr-icon {
    width: 36px; height: 36px;
    border-radius: 8px;
    background: rgba(255,255,255,0.05);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
  }
  .sr-body { flex: 1; min-width: 0; }
  .sr-title {
    font-size: 0.88rem;
    font-weight: 600;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    margin-bottom: 2px;
  }
  .sr-desc {
    font-size: 0.75rem;
    color: var(--muted);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    font-family: 'DM Mono', monospace;
  }
  .sr-tag {
    font-family: 'DM Mono', monospace;
    font-size: 0.62rem;
    padding: 0.2rem 0.6rem;
    border-radius: 100px;
    flex-shrink: 0;
    font-weight: 600;
  }
  .search-result-item mark {
    background: rgba(0,229,160,0.25);
    color: var(--accent);
    border-radius: 2px;
    padding: 0 1px;
  }

  /* ─── SEARCH HINT ─── */
  .search-hint {
    padding: 1.5rem 1.5rem 1.2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.6rem;
  }
  .search-hint-row {
    display: flex; align-items: center; gap: 0.5rem;
    font-family: 'DM Mono', monospace;
    font-size: 0.72rem;
    color: var(--muted);
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
  }
  .sh-icon { font-size: 0.95rem; }

  /* ─── SEARCH EMPTY ─── */
  .search-empty {
    padding: 3rem 2rem;
    text-align: center;
    color: var(--muted);
    font-size: 0.88rem;
  }
  .search-empty-icon { font-size: 2rem; margin-bottom: 0.75rem; }
  .search-empty-sub { font-size: 0.75rem; margin-top: 0.4rem; font-family: 'DM Mono', monospace; opacity: 0.6; }


  .hero {
    position: relative;
    min-height: 100vh;
    display: flex; align-items: center;
    padding: 8rem 3rem 4rem;
    overflow: hidden;
  }

  .hero-bg {
    position: absolute; inset: 0;
    background:
      radial-gradient(ellipse 60% 60% at 70% 50%, rgba(0,229,160,0.08) 0%, transparent 70%),
      radial-gradient(ellipse 40% 50% at 20% 80%, rgba(124,106,255,0.1) 0%, transparent 60%),
      radial-gradient(ellipse 30% 40% at 80% 10%, rgba(255,107,53,0.07) 0%, transparent 60%);
  }

  .hero-grid {
    position: absolute; inset: 0;
    background-image:
      linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
    mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
  }

  .hero-content { position: relative; z-index: 1; max-width: 700px; }

  .hero-badge {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: rgba(0,229,160,0.1);
    border: 1px solid rgba(0,229,160,0.25);
    color: var(--accent);
    font-family: 'DM Mono', monospace;
    font-size: 0.75rem;
    padding: 0.35rem 0.9rem;
    border-radius: 100px;
    margin-bottom: 2rem;
    animation: fadeUp 0.6s ease both;
  }
  .hero-badge::before { content: '◈'; }

  h1 {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: clamp(2.8rem, 6vw, 5rem);
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    animation: fadeUp 0.6s 0.1s ease both;
  }
  h1 em {
    font-style: normal;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent3) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .hero-sub {
    font-size: 1.15rem;
    color: var(--muted);
    line-height: 1.7;
    max-width: 520px;
    margin-bottom: 2.5rem;
    animation: fadeUp 0.6s 0.2s ease both;
  }

  .hero-actions {
    display: flex; gap: 1rem; flex-wrap: wrap;
    animation: fadeUp 0.6s 0.3s ease both;
  }

  .btn-primary {
    background: var(--accent);
    color: #0a0a0f;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.85rem 2rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex; align-items: center; gap: 0.5rem;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 0 30px rgba(0,229,160,0.3);
  }
  .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 40px rgba(0,229,160,0.4); }

  .btn-ghost {
    background: transparent;
    color: var(--text);
    font-family: 'Outfit', sans-serif;
    font-weight: 400;
    font-size: 0.95rem;
    padding: 0.85rem 2rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex; align-items: center; gap: 0.5rem;
    transition: border-color 0.2s, background 0.2s;
  }
  .btn-ghost:hover { border-color: rgba(255,255,255,0.2); background: rgba(255,255,255,0.04); }

  .hero-stats {
    position: absolute; right: 3rem; bottom: 4rem;
    display: flex; flex-direction: column; gap: 1.5rem;
    animation: fadeLeft 0.7s 0.4s ease both;
  }
  .stat {
    text-align: right;
  }
  .stat-num {
    font-family: 'Syne', sans-serif;
    font-size: 2rem;
    font-weight: 800;
    color: var(--text);
  }
  .stat-label {
    font-family: 'DM Mono', monospace;
    font-size: 0.7rem;
    color: var(--muted);
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }

  /* ─── SECTION WRAPPER ─── */
  section { padding: 6rem 3rem; position: relative; z-index: 1; }
  .container { max-width: 1200px; margin: 0 auto; padding: 0 3rem; }

  .section-label {
    font-family: 'DM Mono', monospace;
    font-size: 0.72rem;
    color: var(--accent);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 1rem;
    display: flex; align-items: center; gap: 0.6rem;
  }
  .section-label::before { content: '//'; opacity: 0.5; }

  .section-title {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
  }
  .section-sub {
    color: var(--muted);
    font-size: 1.05rem;
    max-width: 500px;
    line-height: 1.7;
    margin-bottom: 4rem;
  }

  /* ─── COURSES GRID ─── */
  .courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
  }

  .course-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
    cursor: pointer;
    animation: fadeUp 0.5s ease both;
  }
  .course-card:hover {
    transform: translateY(-6px);
    border-color: rgba(255,255,255,0.15);
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  }

  .course-header {
    padding: 2rem 2rem 1.5rem;
    position: relative;
    overflow: hidden;
  }

  .course-header::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 1px;
    background: var(--border);
  }

  .course-icon-wrap {
    width: 52px; height: 52px;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 1.2rem;
    position: relative;
  }

  .lang-tag {
    position: absolute; top: 1.5rem; right: 1.5rem;
    font-family: 'DM Mono', monospace;
    font-size: 0.68rem;
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    letter-spacing: 0.05em;
    font-weight: 500;
  }

  .course-title {
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
  }
  .course-desc {
    font-size: 0.88rem;
    color: var(--muted);
    line-height: 1.6;
  }

  .course-body { padding: 1.5rem 2rem 2rem; }

  .course-meta {
    display: flex; gap: 1rem; flex-wrap: wrap;
    margin-bottom: 1.5rem;
  }
  .meta-item {
    display: flex; align-items: center; gap: 0.35rem;
    font-size: 0.8rem;
    color: var(--muted);
    font-family: 'DM Mono', monospace;
  }
  .meta-dot { width: 4px; height: 4px; border-radius: 50%; background: currentColor; opacity: 0.5; }

  .course-topics {
    display: flex; flex-wrap: wrap; gap: 0.5rem;
    margin-bottom: 1.8rem;
  }
  .topic-tag {
    font-family: 'DM Mono', monospace;
    font-size: 0.7rem;
    padding: 0.3rem 0.65rem;
    border-radius: 5px;
    background: rgba(255,255,255,0.05);
    color: var(--muted);
    border: 1px solid var(--border);
  }

  .progress-bar-wrap {
    margin-bottom: 1.5rem;
  }
  .progress-label {
    display: flex; justify-content: space-between;
    font-size: 0.75rem;
    color: var(--muted);
    margin-bottom: 0.5rem;
    font-family: 'DM Mono', monospace;
  }
  .progress-track {
    height: 4px;
    background: rgba(255,255,255,0.07);
    border-radius: 100px;
    overflow: hidden;
  }
  .progress-fill {
    height: 100%;
    border-radius: 100px;
    transition: width 1s ease;
  }

  .enroll-btn {
    width: 100%;
    padding: 0.8rem;
    border: none;
    border-radius: 8px;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.2s;
    letter-spacing: 0.02em;
  }
  .enroll-btn:hover { opacity: 0.85; transform: translateY(-1px); }

  /* ─── COLOR THEMES PER COURSE ─── */
  .python .course-icon-wrap { background: rgba(255,212,59,0.12); }
  .python .lang-tag { background: rgba(255,212,59,0.1); color: #ffd43b; border: 1px solid rgba(255,212,59,0.2); }
  .python .progress-fill { background: linear-gradient(90deg, #ffd43b, #ffaa00); }
  .python .enroll-btn { background: linear-gradient(135deg, #ffd43b, #ffaa00); color: #1a1000; }
  .python .course-card:hover { box-shadow: 0 20px 60px rgba(255,212,59,0.1); }

  .cpp .course-icon-wrap { background: rgba(100,149,237,0.12); }
  .cpp .lang-tag { background: rgba(100,149,237,0.1); color: #6495ed; border: 1px solid rgba(100,149,237,0.2); }
  .cpp .progress-fill { background: linear-gradient(90deg, #6495ed, #4169e1); }
  .cpp .enroll-btn { background: linear-gradient(135deg, #6495ed, #4169e1); color: #fff; }
  .cpp .course-card:hover { box-shadow: 0 20px 60px rgba(100,149,237,0.1); }

  .html .course-icon-wrap { background: rgba(255,107,53,0.12); }
  .html .lang-tag { background: rgba(255,107,53,0.1); color: #ff6b35; border: 1px solid rgba(255,107,53,0.2); }
  .html .progress-fill { background: linear-gradient(90deg, #ff6b35, #e63900); }
  .html .enroll-btn { background: linear-gradient(135deg, #ff6b35, #e63900); color: #fff; }
  .html .course-card:hover { box-shadow: 0 20px 60px rgba(255,107,53,0.1); }

  .css .course-icon-wrap { background: rgba(41,182,246,0.12); }
  .css .lang-tag { background: rgba(41,182,246,0.1); color: #29b6f6; border: 1px solid rgba(41,182,246,0.2); }
  .css .progress-fill { background: linear-gradient(90deg, #29b6f6, #0288d1); }
  .css .enroll-btn { background: linear-gradient(135deg, #29b6f6, #0288d1); color: #fff; }
  .css .course-card:hover { box-shadow: 0 20px 60px rgba(41,182,246,0.1); }

  .java .course-icon-wrap { background: rgba(255,89,89,0.12); }
  .java .lang-tag { background: rgba(255,89,89,0.1); color: #ff5959; border: 1px solid rgba(255,89,89,0.2); }
  .java .progress-fill { background: linear-gradient(90deg, #ff5959, #cc2200); }
  .java .enroll-btn { background: linear-gradient(135deg, #ff5959, #cc2200); color: #fff; }
  .java .course-card:hover { box-shadow: 0 20px 60px rgba(255,89,89,0.1); }

  .js .course-icon-wrap { background: rgba(247,223,30,0.12); }
  .js .lang-tag { background: rgba(247,223,30,0.1); color: #f7df1e; border: 1px solid rgba(247,223,30,0.2); }
  .js .progress-fill { background: linear-gradient(90deg, #f7df1e, #d4a800); }
  .js .enroll-btn { background: linear-gradient(135deg, #f7df1e, #d4a800); color: #1a1400; }
  .js .course-card:hover { box-shadow: 0 20px 60px rgba(247,223,30,0.1); }

  .c .course-icon-wrap { background: rgba(168,185,204,0.12); }
  .c .lang-tag { background: rgba(168,185,204,0.1); color: #a8b9cc; border: 1px solid rgba(168,185,204,0.2); }
  .c .progress-fill { background: linear-gradient(90deg, #a8b9cc, #657b98); }
  .c .enroll-btn { background: linear-gradient(135deg, #a8b9cc, #657b98); color: #fff; }
  .c .course-card:hover { box-shadow: 0 20px 60px rgba(168,185,204,0.1); }

  /* ─── FEATURES STRIP ─── */
  .features { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
  .features-inner {
    display: flex; gap: 0; flex-wrap: wrap;
  }
  .feature-item {
    flex: 1; min-width: 200px;
    padding: 2.5rem;
    border-right: 1px solid var(--border);
    display: flex; flex-direction: column; gap: 0.6rem;
  }
  .feature-item:last-child { border-right: none; }
  .feature-icon { font-size: 1.5rem; }
  .feature-title { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 0.95rem; }
  .feature-desc { font-size: 0.82rem; color: var(--muted); line-height: 1.5; }

  /* ─── HOW IT WORKS ─── */
  .steps { display: flex; gap: 2rem; flex-wrap: wrap; margin-top: 3rem; }
  .step {
    flex: 1; min-width: 200px;
    display: flex; flex-direction: column; gap: 1rem;
    animation: fadeUp 0.5s ease both;
  }
  .step-num {
    font-family: 'Syne', sans-serif;
    font-size: 3rem;
    font-weight: 800;
    color: rgba(255,255,255,0.06);
    line-height: 1;
  }
  .step-title { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 1.1rem; }
  .step-desc { font-size: 0.88rem; color: var(--muted); line-height: 1.6; }

  /* ─── MARQUEE ─── */
  .marquee-wrap {
    overflow: hidden;
    padding: 1.5rem 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: rgba(0,229,160,0.02);
  }
  .marquee-track {
    display: flex; gap: 3rem;
    animation: marquee 20s linear infinite;
    width: max-content;
  }
  .marquee-item {
    font-family: 'DM Mono', monospace;
    font-size: 0.8rem;
    color: var(--muted);
    white-space: nowrap;
    display: flex; align-items: center; gap: 1rem;
  }
  .marquee-item::after { content: '✦'; color: var(--accent); opacity: 0.4; }

  /* ─── CTA ─── */
  .cta-section {
    text-align: center;
    padding: 8rem 3rem;
    position: relative;
    overflow: hidden;
  }
  .cta-section::before {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 600px; height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0,229,160,0.08) 0%, transparent 70%);
    pointer-events: none;
  }
  .cta-section h2 {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: clamp(2rem, 5vw, 3.5rem);
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
    position: relative;
  }
  .cta-section p { color: var(--muted); margin-bottom: 2.5rem; font-size: 1.05rem; position: relative; }

  footer {
    background: var(--surface);
    color: var(--text);
    padding: 6rem 0 3rem;
    border-top: 1px solid var(--border);
    position: relative;
    z-index: 1;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 4rem;
  }
  .footer-col h3 {
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--text);
  }
  .footer-col p {
    font-size: 0.9rem;
    color: var(--muted);
    line-height: 1.6;
  }
  .footer-col ul { list-style: none; }
  .footer-col ul li { margin-bottom: 0.8rem; }
  .footer-col ul li a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
  }
  .footer-col ul li a:hover { color: var(--accent); }
  .copyright {
    text-align: center;
    padding-top: 2.5rem;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.85rem;
    font-family: 'DM Mono', monospace;
  }

  /* ─── MODAL ─── */
  .modal-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.8);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    z-index: 200;
    display: flex; align-items: center; justify-content: center;
    padding: 2rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
  }
  .modal-overlay.open { opacity: 1; pointer-events: auto; }
  .modal {
    background: var(--surface);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    max-width: 600px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    transform: scale(0.95) translateY(20px);
    transition: transform 0.3s;
  }
  .modal-overlay.open .modal { transform: scale(1) translateY(0); }
  .modal-top { padding: 2rem 2rem 0; display: flex; justify-content: space-between; align-items: flex-start; }
  .modal-close {
    background: rgba(255,255,255,0.07);
    border: none; color: var(--text);
    width: 36px; height: 36px;
    border-radius: 8px;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: background 0.2s;
    flex-shrink: 0;
  }
  .modal-close:hover { background: rgba(255,255,255,0.12); }
  .modal-body { padding: 1.5rem 2rem 2rem; }
  .modal-title { font-family: 'Syne', sans-serif; font-weight: 800; font-size: 1.6rem; margin-bottom: 0.5rem; }
  .modal-desc { color: var(--muted); font-size: 0.92rem; line-height: 1.7; margin-bottom: 1.5rem; }
  .curriculum-title { font-family: 'DM Mono', monospace; font-size: 0.72rem; color: var(--accent); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 1rem; }
  .curriculum-list { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; margin-bottom: 2rem; }
  .curriculum-list li {
    display: flex; align-items: center; gap: 0.75rem;
    font-size: 0.88rem; color: var(--muted);
    padding: 0.6rem 0.8rem;
    background: rgba(255,255,255,0.03);
    border-radius: 8px;
    border: 1px solid var(--border);
  }
  .curriculum-list li::before { content: '→'; color: var(--accent); font-family: 'DM Mono', monospace; }

  /* ─── KEYFRAMES ─── */
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
  }
  @keyframes fadeLeft {
    from { opacity: 0; transform: translateX(24px); }
    to { opacity: 1; transform: translateX(0); }
  }
  @keyframes marquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
  }

  /* ─── RESPONSIVE ─── */
  @media (max-width: 768px) {
    nav { padding: 1rem 1.5rem; }
    nav ul { display: none; }
    section { padding: 4rem 1.5rem; }
    .hero { padding: 7rem 1.5rem 3rem; }
    .hero-stats { display: none; }
    .feature-item { border-right: none; border-bottom: 1px solid var(--border); }
    footer { padding: 1.5rem; }
  }