:root {
    --black: #191127;
    --deepgray: #180f26;
    --panel: #23133a;
    --border: #3a1c63;
    --accent: #883CF0;
    --accent2: #7c3aed;
    --accent3: #b29dce;
    --muted: #d6d6d6;
    --text: #c8d8e8;
    --textdim: #e2e8f0;
    --white: #e8f4ff;
    --glow: 0 0 20px rgba(128, 0, 255, 0.25);
    --glow2: 0 0 20px rgba(181, 90, 255, 0.2);
  }

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

  html { scroll-behavior: smooth; }

  body {
    background: var(--black);
    color: var(--text);
    font-family: 'JetBrains Mono', monospace;
    overflow-x: hidden;
    cursor: none;
  }

  /* Custom cursor */
  .cursor {
    width: 12px; height: 12px;
    background: var(--accent);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transition: transform 0.1s, background 0.2s;
    mix-blend-mode: screen;
  }
  .cursor-ring {
    width: 36px; height: 36px;
    border: 1px solid var(--accent);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9998;
    transition: all 0.15s ease;
    transform: translate(-50%, -50%);
  }

  /* Scan lines overlay */
  body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(0, 0, 0, 0.03) 2px,
      rgba(0,0,0,0.03) 4px
    );
    pointer-events: none;
    z-index: 1000;
  }

  /* Grid background */
  body::after {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
      linear-gradient(rgba(128, 0, 255, 0.03) 1px, transparent 1px),
      linear-gradient(90deg, rgba(170, 0, 255, 0.03) 1px, transparent 1px);
    background-size: 48px 48px;
    pointer-events: none;
    z-index: -1;
  }

  /* ---- NAV ---- */
  nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 500;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 3rem;
    height: 60px;
    background: #180f26;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
  }
  .nav-logo {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: 1rem;
    letter-spacing: 0.12em;
    color: var(--accent);
    text-transform: uppercase;
  }
  .nav-logo span { color: var(--accent2); }
  nav ul { display: flex; gap: 2rem; list-style: none; }
  nav ul a {
    text-decoration: none;
    color: var(--textdim);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: color 0.2s;
  }
  nav ul a:hover { color: var(--accent); }

  /* Prompt indicator */
  .nav-prompt {
    display: flex; align-items: center; gap: 0.5rem;
    font-size: 0.7rem; color: var(--muted);
  }
  .prompt-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--accent2);
    animation: blink 1.2s infinite;
  }
  @keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.2} }

  /* ---- HERO ---- */
  #hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 120px 3rem 80px;
    position: relative;
    overflow: hidden;
  }

  .hero-terminal {
    position: absolute;
    top: 50%; right: 4rem;
    transform: translateY(-50%);
    width: 420px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--glow), 0 40px 80px rgba(0, 0, 0, 0.6);
    font-size: 0.72rem;
    opacity: 0;
    animation: slideIn 0.8s 0.4s forwards;
  }
  @keyframes slideIn {
    from { opacity:0; transform: translateY(-50%) translateX(40px); }
    to   { opacity:1; transform: translateY(-50%) translateX(0); }
  }
  .terminal-bar {
    display: flex; align-items: center; gap: 0.5rem;
    padding: 0.6rem 1rem;
    background: rgba(255,255,255,0.03);
    border-bottom: 1px solid var(--border);
    border-radius: 8px 8px 0 0;
  }
  .tb { width:10px;height:10px;border-radius:50%; }
  .tb-r{background:#ff5f57}.tb-y{background:#febc2e}.tb-g{background:#28c840}
  .terminal-title { margin-left:auto; color:var(--muted); font-size:0.65rem; }
  .terminal-body { padding: 1.2rem; line-height: 1.8; }
  .t-line { opacity: 0; animation: fadeUp 0.4s forwards; }
  .t-line:nth-child(1){animation-delay:0.8s}
  .t-line:nth-child(2){animation-delay:1.2s}
  .t-line:nth-child(3){animation-delay:1.6s}
  .t-line:nth-child(4){animation-delay:2.0s}
  .t-line:nth-child(5){animation-delay:2.4s}
  .t-line:nth-child(6){animation-delay:2.8s}
  .t-line:nth-child(7){animation-delay:3.2s}
  @keyframes fadeUp {
    from{opacity:0;transform:translateY(6px)} to{opacity:1;transform:none}
  }
  .t-prompt { color: var(--accent2); }
  .t-cmd { color: var(--white); }
  .t-out { color: var(--textdim); padding-left: 1rem; }
  .t-val { color: var(--accent); }
  .t-cursor { display:inline-block; width:7px;height:13px; background:var(--accent); vertical-align:middle; animation:blink 1s infinite; }

  .hero-eyebrow {
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent2);
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: fadeUp 0.6s 0.1s forwards;
  }
  .hero-eyebrow::before { content: '> '; color: var(--muted); }

  h1 {
    font-family: 'Syne', sans-serif;
    font-size: clamp(2.8rem, 5vw, 5rem);
    font-weight: 800;
    line-height: 1.05;
    color: var(--white);
    max-width: 600px;
    margin-bottom: 1.8rem;
    opacity: 0;
    animation: fadeUp 0.6s 0.3s forwards;
  }
  h1 em {
    font-style: normal;
    color: var(--accent);
    position: relative;
  }
  h1 em::after {
    content: '';
    position: absolute;
    bottom: 4px; left: 0; right: 0;
    height: 3px;
    background: var(--accent);
    opacity: 0.4;
  }

  .hero-sub {
    max-width: 460px;
    color: var(--textdim);
    font-size: 0.8rem;
    line-height: 1.9;
    margin-bottom: 3rem;
    opacity: 0;
    animation: fadeUp 0.6s 0.5s forwards;
  }

  .hero-btns {
    display: flex; gap: 1rem; flex-wrap: wrap;
    opacity: 0;
    animation: fadeUp 0.6s 0.7s forwards;
  }

  .btn-primary {
    display: inline-flex; align-items: center; gap: 0.6rem;
    background: var(--accent);
    color: var(--black);
    padding: 0.75rem 1.8rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border: none; cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  }
  .btn-primary:hover {
    background: var(--white);
    box-shadow: var(--glow);
    transform: translateY(-2px);
  }

  .btn-outline {
    display: inline-flex; align-items: center; gap: 0.6rem;
    background: transparent;
    color: var(--accent);
    padding: 0.75rem 1.8rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border: 1px solid var(--accent);
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  }
  .btn-outline:hover {
    background: #23133a6d;
    box-shadow: var(--glow);
    transform: translateY(-2px);
  }

  .hero-stats {
    position: absolute;
    bottom: 3rem; left: 3rem;
    display: flex; gap: 3rem;
    opacity: 0;
    animation: fadeUp 0.6s 1s forwards;
  }
  .stat-item { text-align: left; }
  .stat-num {
    font-family: 'Syne', sans-serif;
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
  }
  .stat-label { font-size: 0.6rem; color: var(--textdim); letter-spacing: 0.1em; text-transform: uppercase; margin-top: 0.3rem; }

  /* ---- SECTION COMMONS ---- */
  section { padding: 100px 3rem; }
  .section-tag {
    display: inline-flex; align-items: center; gap: 0.5rem;
    font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase;
    color: var(--accent2); margin-bottom: 1rem;
  }
  .section-tag::before { content:'//'; color: var(--muted); }
  h2 {
    font-family: 'Syne', sans-serif;
    font-size: clamp(1.8rem, 3vw, 2.8rem);
    font-weight: 800;
    color: var(--white);
    line-height: 1.15;
    margin-bottom: 1.2rem;
  }

  /* ---- WHY SECTION ---- */
  #why { background: var(--deepgray); }
  .why-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border: 1px solid var(--border);
    margin-top: 4rem;
  }
  .why-card {
    padding: 2.5rem;
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    position: relative;
    cursor: pointer;
    transition: background 0.3s;
    overflow: hidden;
  }
  .why-card:nth-child(2n) { border-right: none; }
  .why-card::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(157, 0, 255, 0.04), transparent);
    transition: left 0.5s;
  }
  .why-card:hover::before { left: 100%; }
  .why-card:hover { background: #1f1232; }
  .why-card:hover .card-num { color: var(--accent); }

  .card-num {
    font-family: 'Syne', sans-serif;
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--border);
    line-height: 1;
    transition: color 0.3s;
    margin-bottom: 1rem;
  }
  .card-title {
    font-family: 'Syne', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.8rem;
  }
  .card-body {
    font-size: 0.72rem;
    color: var(--textdim);
    line-height: 1.8;
  }
  .card-tag {
    display: inline-block;
    margin-top: 1.2rem;
    font-size: 0.6rem;
    letter-spacing: 0.1em;
    color: var(--accent2);
    border: 1px solid #5e309d;
    padding: 0.2rem 0.6rem;
    text-transform: uppercase;
  }

  /* ---- HOW IT WORKS ---- */
  #how { position: relative; overflow: hidden; }
  .how-connector {
    position: absolute;
    top: 50%; left: 3rem; right: 3rem;
    height: 1px;
    background: var(--border);
    z-index: 0;
    transform: translateY(-50%);
  }
  .how-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border: 1px solid var(--border);
    margin-top: 4rem;
    position: relative;
  }
  .how-step {
    padding: 2.5rem 2rem;
    border-right: 1px solid var(--border);
    position: relative;
    transition: background 0.3s;
  }
  .how-step:last-child { border-right: none; }
  .how-step:hover { background: #1f1232; }
  .step-num-wrap {
    display: flex; align-items: center; justify-content: center;
    width: 44px; height: 44px;
    border: 1px solid var(--accent);
    margin-bottom: 2rem;
    position: relative;
  }
  .step-num-wrap::before {
    content:'';
    position: absolute;
    inset: 4px;
    background: #2a1647;
  }
  .step-num {
    font-family: 'Syne', sans-serif;
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--accent);
    position: relative;
    z-index: 1;
  }
  .step-title {
    font-family: 'Syne', sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.8rem;
  }
  .step-body {
    font-size: 0.7rem;
    color: var(--textdim);
    line-height: 1.85;
  }

  /* ---- COURSES ---- */
  #courses { background: var(--deepgray); }
  .courses-header {
    display: flex; justify-content: space-between; align-items: flex-end;
    margin-bottom: 3rem;
    flex-wrap: wrap; gap: 1rem;
  }
  .filter-tabs {
    display: flex; gap: 0.5rem;
  }
  .filter-tab {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.4rem 1rem;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--textdim);
    cursor: pointer;
    transition: all 0.2s;
  }
  .filter-tab.active, .filter-tab:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: #1f1232;
  }

  .courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border);
  }
  .course-card {
    background: var(--panel);
    padding: 2rem;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s;
  }
  .course-card::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    height: 2px; width: 0;
    background: var(--accent);
    transition: width 0.3s;
  }
  .course-card:hover::after { width: 100%; }
  .course-card:hover { background: rgba(174, 0, 255, 0.04); }
  .course-icon {
    font-size: 1.8rem;
    margin-bottom: 1.2rem;
    display: block;
    filter: grayscale(0.3);
  }
  .course-level {
    display: inline-block;
    font-size: 0.6rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 0.2rem 0.6rem;
    background: #2a1647;
    color: var(--accent2);
    border: 1px solid #3a1c63;
    margin-bottom: 0.8rem;
  }
  .course-title {
    font-family: 'Syne', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.6rem;
    line-height: 1.3;
  }
  .course-desc {
    font-size: 0.68rem;
    color: var(--textdim);
    line-height: 1.8;
    margin-bottom: 1.5rem;
  }
  .course-meta {
    display: flex; align-items: center; justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
  }
  .course-enroll {
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    color: var(--accent);
    text-transform: uppercase;
    display: flex; align-items: center; gap: 0.4rem;
    cursor: pointer;
    background: none; border: none;
    font-family: 'JetBrains Mono', monospace;
    transition: gap 0.2s;
  }
  .course-card:hover .course-enroll { gap: 0.7rem; }
  .course-badge {
    font-size: 0.62rem;
    color: var(--textdim);
  }

  /* ---- BENEFITS ---- */
  #benefits { position: relative; }
  .benefits-layout {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 5rem;
    margin-top: 4rem;
    align-items: start;
  }
  .benefits-visual {
    position: sticky;
    top: 100px;
  }
  .radar-wrap {
    position: relative;
    width: 100%;
    max-width: 360px;
  }
  .radar-wrap svg { width: 100%; height: auto; }

  .benefit-list { list-style: none; }
  .benefit-item {
    display: flex; align-items: flex-start; gap: 1.2rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    transition: all 0.2s;
  }
  .benefit-item:first-child { border-top: 1px solid var(--border); }
  .benefit-item:hover .benefit-icon { background: #1f1232; border-color: var(--accent); color: var(--accent); }
  .benefit-icon {
    flex-shrink: 0;
    width: 36px; height: 36px;
    border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    font-size: 0.9rem;
    color: var(--textdim);
    transition: all 0.2s;
  }

  .benefit-title {
    font-family: 'Syne', sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.4rem;
  }
  .benefit-text {
    font-size: 0.68rem;
    color: var(--textdim);
    line-height: 1.8;
  }

  /* ---- CTA ---- */
  #cta {
    background: var(--panel);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    text-align: center;
    padding: 120px 3rem;
    position: relative;
    overflow: hidden;
  }
  #cta::before {
    content:'';
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%,-50%);
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(0,212,255,0.06) 0%, transparent 70%);
    pointer-events: none;
  }
  .cta-inner { position: relative; z-index: 1; }
  .cta-label {
    font-size: 0.65rem; letter-spacing: 0.2em; text-transform: uppercase;
    color: var(--accent2); margin-bottom: 1.2rem;
  }
  #cta h2 { max-width: 600px; margin: 0 auto 1.2rem; }
  .cta-sub { font-size: 0.75rem; color: var(--textdim); margin-bottom: 3rem; }

  .cta-input-wrap {
    display: flex; max-width: 480px; margin: 0 auto 1.5rem;
    border: 1px solid var(--accent);
    background: rgba(140, 0, 255, 0.04);
  }
  .cta-input {
    flex: 1;
    background: transparent;
    border: none;
    padding: 0.9rem 1.2rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--white);
    outline: none;
  }
  .cta-input::placeholder { color: var(--muted); }
  .cta-submit {
    padding: 0.9rem 1.5rem;
    background: var(--accent);
    border: none;
    color: var(--black);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 0.2s;
  }
  .cta-submit:hover { background: var(--white); }
  .cta-note { font-size: 0.62rem; color: var(--muted); }

  /* ---- FOOTER ---- */
  footer {
    padding: 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border);
    flex-wrap: wrap; gap: 1rem;
  }
  .footer-logo {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: 0.9rem;
    color: var(--textdim);
    letter-spacing: 0.1em;
  }
  .footer-logo span { color: var(--accent); }
  .footer-links { display: flex; gap: 2rem; }
  .footer-links a { font-size: 0.65rem; color: var(--muted); text-decoration: none; transition: color 0.2s; }
  .footer-links a:hover { color: var(--accent); }
  .footer-copy { font-size: 0.62rem; color: var(--muted); }

  /* ---- REVEAL ANIMATION ---- */
  .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }
  .reveal.visible {
    opacity: 1;
    transform: none;
  }

  /* ---- INTERACTIVE PROGRESS BAR (courses) ---- */
  .progress-bar-wrap {
    height: 2px;
    background: var(--border);
    position: relative;
    overflow: hidden;
    margin-bottom: 1.5rem;
  }
  .progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent2));
    width: 0;
    transition: width 1.5s cubic-bezier(0.25, 1, 0.5, 1);
  }

  /* ---- ACCORDION (mobile/interactive) ---- */
  .faq-section { background: var(--deepgray); }
  .faq-list { margin-top: 3rem; border-top: 1px solid var(--border); }
  .faq-item { border-bottom: 1px solid var(--border); }
  .faq-q {
    display: flex; justify-content: space-between; align-items: center;
    padding: 1.5rem 0;
    cursor: pointer;
    font-family: 'Syne', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--white);
    transition: color 0.2s;
  }
  .faq-q:hover { color: var(--accent); }
  .faq-chevron {
    font-size: 0.8rem;
    color: var(--accent);
    transition: transform 0.3s;
  }
  .faq-item.open .faq-chevron { transform: rotate(180deg); }
  .faq-a {
    font-size: 0.73rem;
    color: var(--textdim);
    line-height: 1.9;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s;
  }
  .faq-item.open .faq-a { max-height: 400px; padding-bottom: 1.5rem; }

  /* Responsive */
  @media(max-width: 900px) {
    .hero-terminal { display: none; }
    .why-grid, .courses-grid { grid-template-columns: 1fr; }
    .how-steps { grid-template-columns: 1fr 1fr; }
    .benefits-layout { grid-template-columns: 1fr; }
    .courses-grid { grid-template-columns: 1fr 1fr; }
    nav { padding: 0 1.5rem; }
    nav ul { gap: 1rem; }
    section { padding: 60px 1.5rem; }
    #hero { padding: 100px 1.5rem 60px; }
    .hero-stats { left: 1.5rem; gap: 2rem; }
    footer { padding: 2rem 1.5rem; }
  }
  @media(max-width:600px){
    .how-steps { grid-template-columns: 1fr; }
    .courses-grid { grid-template-columns: 1fr; }
    nav ul { display: none; }
  }