@font-face {
  font-family: 'SF Pro Display';
  src: url('fonts/SFPRODISPLAYREGULAR.OTF') format('opentype');
  font-weight: 400;
  font-style: normal;
}
@font-face {
  font-family: 'SF Pro Display';
  src: url('fonts/SFPRODISPLAYMEDIUM.OTF') format('opentype');
  font-weight: 500 600;
  font-style: normal;
}
@font-face {
  font-family: 'SF Pro Display';
  src: url('fonts/SFPRODISPLAYBOLD.OTF') format('opentype');
  font-weight: 700 900;
  font-style: normal;
}

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

    :root {
      --teal-deep:   #0a2e2e;
      --teal-mid:    #0d4a46;
      --teal-vivid:  #12796e;
      --teal-bright: #18b0a0;
      --mint:        #10b09e;
      --mint-light:  #5de6d4;
      --white:       #f4faf9;
      --text-dark:   #f0faf9;
      --text-body:   #8ab8b4;
      --text-muted:  #5a8a86;
      --surface:     rgba(255,255,255,0.04);
      --border:      rgba(93,230,212,0.12);
      /* Dark mode for content sections */
      --bg-light:    #0f1a1a;
      --bg-soft:     #111f1f;
      --border-light: rgba(93,230,212,0.1);
      --surface-light: rgba(93,230,212,0.04);
    }

    html { scroll-behavior: smooth; }

    body {
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      background: var(--bg-light);
      color: var(--text-dark);
      overflow-x: hidden;
      cursor: none;
    }

    /* ── CUSTOM CURSOR ── */
    .cursor {
      width: 12px; height: 12px;
      background: var(--mint);
      border-radius: 50%;
      position: fixed; top: 0; left: 0;
      pointer-events: none;
      z-index: 9999;
      transition: transform .15s ease, opacity .15s;
    }
    .cursor-ring {
      width: 36px; height: 36px;
      border: 1.5px solid var(--mint);
      border-radius: 50%;
      position: fixed; top: 0; left: 0;
      pointer-events: none;
      z-index: 9998;
      transition: transform .35s ease, opacity .2s;
      opacity: .5;
    }

    /* ── NOISE OVERLAY ── */
    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='1'/%3E%3C/svg%3E");
      opacity: .025;
      pointer-events: none;
      z-index: 1000;
    }

    /* ── 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 4rem;
      background: transparent;
      transition: background .45s cubic-bezier(.4,0,.2,1), box-shadow .45s, padding .45s;
    }

    /* Hero state — dark teal pill container */
    nav .nav-inner-pill {
      display: flex; align-items: center; gap: 3rem;
      background: rgba(10,46,46,.55);
      border: 1px solid rgba(93,230,212,.18);
      border-radius: 100px;
      padding: .6rem 1rem .6rem 1.6rem;
      backdrop-filter: blur(14px);
      transition: background .45s, border-color .45s, border-radius .45s, padding .45s, box-shadow .45s;
    }

    /* Scrolled state — dark teal bar */
    nav.scrolled {
      background: rgba(10,30,30,.97);
      box-shadow: 0 1px 24px rgba(0,0,0,.3);
      padding: .9rem 4rem;
      backdrop-filter: blur(20px);
    }
    nav.scrolled .nav-inner-pill {
      background: transparent;
      border-color: transparent;
      padding: 0;
      backdrop-filter: none;
    }
    nav.scrolled .nav-logo { color: var(--mint-light); }
    nav.scrolled .nav-logo span { color: var(--mint); }
    nav.scrolled .nav-links a { color: rgba(255,255,255,.75); }
    nav.scrolled .nav-links a:hover { color: #ffffff; }
    nav.scrolled .nav-links a::after { background: var(--mint); }
    nav.scrolled .nav-cta {
      background: var(--mint) !important;
      color: var(--teal-deep) !important;
      box-shadow: none !important;
    }
    nav.scrolled .nav-cta:hover { background: var(--mint-light) !important; }

    .nav-logo {
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-weight: 800;
      font-size: 1.45rem;
      color: var(--teal-vivid);
      text-decoration: none;
      letter-spacing: -.02em;
      transition: color .3s;
      background: rgba(10,46,46,.85);
      padding: .38rem 1rem .38rem .9rem;
      border-radius: 100px;
      border: 1px solid rgba(93,230,212,.3);
      backdrop-filter: blur(10px);
    }
    .nav-logo span { color: var(--mint); transition: color .3s; }

    nav.scrolled .nav-logo {
      background: transparent;
      border-color: transparent;
      color: var(--mint-light);
      padding: 0;
    }
    nav.scrolled .nav-logo span { color: var(--mint); }

    .nav-links { display: flex; gap: 2rem; list-style: none; align-items: center; }
    .nav-links a {
      color: rgba(255,255,255,.75);
      text-decoration: none;
      font-size: .88rem;
      font-weight: 500;
      letter-spacing: .02em;
      transition: color .2s;
      position: relative;
    }
    .nav-links a::after {
      content: '';
      position: absolute; bottom: -4px; left: 0;
      width: 0; height: 1.5px;
      background: var(--mint-light);
      transition: width .3s ease;
    }
    .nav-links a:hover { color: #ffffff; }
    .nav-links a:hover::after { width: 100%; }

    .nav-cta {
      background: var(--mint-light) !important;
      color: var(--teal-deep) !important;
      padding: .52rem 1.3rem !important;
      border-radius: 100px !important;
      font-weight: 700 !important;
      font-size: .85rem !important;
      letter-spacing: .03em !important;
      transition: background .2s, transform .2s, box-shadow .2s !important;
      box-shadow: 0 0 0 4px rgba(93,230,212,.2) !important;
    }
    .nav-cta:hover {
      background: var(--mint-light) !important;
      transform: translateY(-1px) !important;
      box-shadow: 0 4px 16px rgba(93,230,212,.35) !important;
    }
    .nav-cta::after { display: none !important; }

    /* ── HERO ── */
    .hero {
      min-height: 100vh;
      display: flex; align-items: center;
      position: relative;
      overflow: hidden;
      padding: 8rem 4rem 5rem;
    }

    /* Radial mesh background */
    .hero::after {
      content: '';
      position: absolute; inset: 0;
      background:
        radial-gradient(ellipse 70% 60% at 65% 50%, rgba(18,121,110,.45) 0%, transparent 70%),
        radial-gradient(ellipse 40% 40% at 15% 80%, rgba(93,230,212,.1) 0%, transparent 60%),
        radial-gradient(ellipse 30% 30% at 85% 10%, rgba(24,176,160,.15) 0%, transparent 60%);
      pointer-events: none;
    }

    .hero-content {
      position: relative; z-index: 2;
      max-width: 680px;
    }

    .hero-badge {
      display: inline-flex; align-items: center; gap: .5rem;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: 100px;
      padding: .4rem 1rem;
      font-size: .78rem;
      font-weight: 500;
      color: var(--mint);
      letter-spacing: .06em;
      text-transform: uppercase;
      margin-bottom: 2rem;
      animation: fadeUp .6s ease both;
    }
    .hero-badge span {
      width: 6px; height: 6px;
      background: var(--mint);
      border-radius: 50%;
      animation: pulse 2s infinite;
    }

    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50%       { opacity: .4; transform: scale(.7); }
    }

    .hero h1 {
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-weight: 800;
      font-size: clamp(3rem, 6vw, 5.5rem);
      line-height: 1.02;
      letter-spacing: -.04em;
      animation: fadeUp .7s .1s ease both;
    }
    .hero h1 em {
      font-style: normal;
      background: linear-gradient(135deg, var(--mint) 0%, var(--teal-bright) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-sub {
      margin-top: 1.6rem;
      font-size: 1.1rem;
      line-height: 1.7;
      color: var(--text-muted);
      max-width: 500px;
      font-weight: 300;
      animation: fadeUp .7s .2s ease both;
    }

    .hero-actions {
      display: flex; gap: 1rem; align-items: center;
      margin-top: 2.8rem;
      animation: fadeUp .7s .3s ease both;
    }

    .btn-primary {
      display: inline-flex; align-items: center; gap: .6rem;
      background: var(--mint);
      color: var(--teal-deep);
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-weight: 700;
      font-size: .95rem;
      letter-spacing: .01em;
      padding: .85rem 2rem;
      border-radius: 100px;
      text-decoration: none;
      transition: transform .25s, box-shadow .25s, background .2s;
      box-shadow: 0 0 0 0 rgba(93,230,212,0);
    }
    .btn-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 32px rgba(93,230,212,.3);
      background: #7cf0e1;
    }
    .btn-primary svg { transition: transform .25s; }
    .btn-primary:hover svg { transform: translateX(4px); }

    .btn-ghost {
      display: inline-flex; align-items: center; gap: .6rem;
      color: var(--text-muted);
      font-size: .92rem;
      text-decoration: none;
      font-weight: 500;
      transition: color .2s;
    }
    .btn-ghost:hover { color: var(--white); }
    .btn-ghost .play-icon {
      width: 40px; height: 40px;
      border: 1.5px solid var(--border);
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      transition: border-color .2s, background .2s;
    }
    .btn-ghost:hover .play-icon { border-color: var(--mint); background: rgba(93,230,212,.08); }

    /* hero stats */
    .hero-stats {
      display: flex; gap: 3rem;
      margin-top: 4rem;
      animation: fadeUp .7s .4s ease both;
    }
    .stat-item { display: flex; flex-direction: column; gap: .2rem; }
    .stat-num {
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-weight: 800;
      font-size: 2rem;
      color: var(--white);
      line-height: 1;
    }
    .stat-num span { color: var(--mint); }
    .stat-label { font-size: .78rem; color: var(--text-muted); letter-spacing: .04em; text-transform: uppercase; }

    /* hero visual */
    .hero-visual {
      position: absolute;
      right: 3%;
      top: 50%;
      transform: translateY(-50%);
      width: 44vw;
      max-width: 640px;
      z-index: 2;
      animation: floatIn .9s .2s ease both;
    }

    @keyframes floatIn {
      from { opacity: 0; transform: translateY(-42%) scale(.96); }
      to   { opacity: 1; transform: translateY(-50%) scale(1); }
    }

    .course-card-mockup {
      background: rgba(255,255,255,.06);
      border: 1px solid var(--border);
      border-radius: 20px;
      overflow: hidden;
      backdrop-filter: blur(16px);
      box-shadow: 0 40px 80px rgba(0,0,0,.4);
    }

    .card-body { padding: 1.6rem 1.8rem; }
    .card-tag {
      font-size: .72rem; font-weight: 700;
      letter-spacing: .08em; text-transform: uppercase;
      color: var(--mint);
      margin-bottom: .7rem;
    }
    .card-title {
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-weight: 700;
      font-size: 1.15rem;
      line-height: 1.3;
      color: var(--white);
      margin-bottom: .5rem;
    }
    .card-meta {
      display: flex; gap: 1.2rem;
      font-size: .8rem; color: var(--text-muted);
      margin-bottom: 1.2rem;
    }
    .card-meta span { display: flex; align-items: center; gap: .3rem; }
    .progress-bar {
      height: 4px;
      background: rgba(255,255,255,.1);
      border-radius: 100px;
      overflow: hidden;
    }
    .progress-fill {
      height: 100%; width: 65%;
      background: linear-gradient(to right, var(--teal-bright), var(--mint));
      border-radius: 100px;
    }
    .card-footer {
      display: flex; align-items: center; justify-content: space-between;
      margin-top: 1rem;
    }
    .avatars { display: flex; }
    .avatars div {
      width: 28px; height: 28px;
      border-radius: 50%;
      border: 2px solid var(--teal-deep);
      margin-left: -8px;
      background: linear-gradient(135deg, var(--teal-vivid), var(--teal-bright));
    }
    .avatars div:first-child { margin-left: 0; }
    .card-enrolled { font-size: .78rem; color: var(--text-muted); }

    /* floating pills */
    .pill {
      position: absolute;
      background: rgba(10,46,46,.9);
      border: 1px solid var(--border);
      border-radius: 100px;
      padding: .6rem 1.1rem;
      font-size: .78rem;
      font-weight: 600;
      display: flex; align-items: center; gap: .5rem;
      backdrop-filter: blur(10px);
      box-shadow: 0 8px 24px rgba(0,0,0,.3);
      white-space: nowrap;
    }
    .pill-1 { top: -14px; right: 40px; color: var(--mint); animation: float 4s ease-in-out infinite; }
    .pill-2 { bottom: 20px; left: -30px; color: var(--white); animation: float 5s 1s ease-in-out infinite; }
    .pill-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--mint); }

    @keyframes float {
      0%, 100% { transform: translateY(0); }
      50%       { transform: translateY(-8px); }
    }

    /* ── MARQUEE BAND ── */
    .marquee-section {
      border-top: 1px solid var(--border-light);
      border-bottom: 1px solid var(--border-light);
      overflow: hidden;
      padding: 1rem 0;
      background: var(--bg-soft);
      position: relative;
    }
    .marquee-track {
      display: flex; gap: 0;
      animation: marquee 25s linear infinite;
      width: max-content;
    }
    .marquee-item {
      display: flex; align-items: center; gap: .6rem;
      padding: .4rem 2.5rem;
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-size: .82rem;
      font-weight: 600;
      letter-spacing: .06em;
      text-transform: uppercase;
      color: var(--text-body);
      white-space: nowrap;
    }
    .marquee-item svg { color: var(--mint); flex-shrink: 0; }
    @keyframes marquee {
      from { transform: translateX(0); }
      to   { transform: translateX(-50%); }
    }

    /* ── SECTION SHARED ── */
    section { padding: 7rem 4rem; position: relative; }
    .section-label {
      display: inline-flex; align-items: center; gap: .5rem;
      font-size: .75rem; font-weight: 700;
      letter-spacing: .1em; text-transform: uppercase;
      color: var(--mint);
      margin-bottom: 1.2rem;
    }
    .section-label::before {
      content: '';
      width: 20px; height: 1.5px;
      background: var(--mint);
    }
    .section-title {
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-weight: 800;
      font-size: clamp(2rem, 3.5vw, 3rem);
      line-height: 1.1;
      letter-spacing: -.03em;
      color: var(--text-dark);
    }
    .section-sub {
      color: var(--text-body);
      font-size: 1rem;
      line-height: 1.7;
      font-weight: 300;
      max-width: 520px;
      margin-top: .8rem;
    }

    /* ── CATEGORIES ── */
    .categories { background: var(--bg-soft); }
    .cats-header {
      display: flex; align-items: flex-end; justify-content: space-between;
      margin-bottom: 3.5rem;
    }
    .see-all {
      color: var(--mint);
      text-decoration: none;
      font-size: .88rem;
      font-weight: 600;
      letter-spacing: .03em;
      display: flex; align-items: center; gap: .4rem;
      transition: gap .2s;
    }
    .see-all:hover { gap: .8rem; }

    .cats-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.2rem;
    }
    .cat-card {
      background: #162424;
      border: 1px solid var(--border-light);
      border-radius: 18px;
      padding: 2rem 1.8rem;
      text-decoration: none;
      display: flex; flex-direction: column; gap: 1rem;
      position: relative;
      overflow: hidden;
      box-shadow: 0 2px 12px rgba(0,0,0,.2);
      transition: border-color .3s, transform .3s, box-shadow .3s;
    }
    .cat-card::before {
      content: '';
      position: absolute; inset: 0;
      background: radial-gradient(circle at 80% 20%, var(--cat-color, rgba(16,176,158,.1)), transparent 60%);
      opacity: 0;
      transition: opacity .3s;
    }
    .cat-card:hover::before { opacity: 1; }
    .cat-card:hover { border-color: rgba(16,176,158,.35); transform: translateY(-4px); box-shadow: 0 16px 36px rgba(16,176,158,.1); }

    .cat-icon {
      width: 48px; height: 48px;
      border-radius: 12px;
      background: rgba(16,176,158,.1);
      display: flex; align-items: center; justify-content: center;
      font-size: 1.3rem;
    }
    .cat-name {
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-weight: 700;
      font-size: 1rem;
      color: var(--text-dark);
    }
    .cat-count {
      font-size: .8rem;
      color: var(--text-body);
      margin-top: -.5rem;
    }
    .cat-arrow {
      margin-top: auto;
      color: var(--mint);
      opacity: 0;
      transform: translateX(-6px);
      transition: opacity .3s, transform .3s;
      font-size: .9rem;
    }
    .cat-card:hover .cat-arrow { opacity: 1; transform: translateX(0); }

    /* ── FEATURED COURSES ── */
    .courses { background: var(--bg-light); }
    .courses-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.4rem;
      margin-top: 3.5rem;
    }
    .course-tile {
      background: #162424;
      border: 1px solid var(--border-light);
      border-radius: 18px;
      overflow: hidden;
      box-shadow: 0 2px 16px rgba(0,0,0,.2);
      transition: transform .3s, border-color .3s, box-shadow .3s;
      text-decoration: none;
    }
    .course-tile:hover {
      transform: translateY(-6px);
      border-color: rgba(16,176,158,.3);
      box-shadow: 0 20px 44px rgba(16,176,158,.12);
    }
    .tile-thumb {
      height: 180px;
      position: relative;
      overflow: hidden;
    }
    .tile-thumb-bg {
      width: 100%; height: 100%;
      display: flex; align-items: center; justify-content: center;
      font-size: 3rem;
    }
    .tile-badge {
      position: absolute; top: 12px; left: 12px;
      background: rgba(10,46,46,.85);
      border: 1px solid rgba(93,230,212,.2);
      border-radius: 100px;
      padding: .3rem .8rem;
      font-size: .7rem;
      font-weight: 700;
      letter-spacing: .05em;
      text-transform: uppercase;
      color: var(--mint-light);
    }
    .tile-level {
      position: absolute; top: 12px; right: 12px;
      background: rgba(10,46,46,.9);
      border: 1px solid rgba(93,230,212,.2);
      border-radius: 100px;
      padding: .3rem .7rem;
      font-size: .68rem;
      font-weight: 600;
      color: var(--mint-light);
    }
    .tile-body { padding: 1.5rem; }
    .tile-category {
      font-size: .72rem; font-weight: 700;
      letter-spacing: .07em; text-transform: uppercase;
      color: var(--mint); margin-bottom: .5rem;
    }
    .tile-title {
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-weight: 700; font-size: 1rem;
      line-height: 1.3; color: var(--text-dark);
      margin-bottom: .4rem;
    }
    .tile-author {
      font-size: .8rem; color: var(--text-body);
      margin-bottom: 1.2rem;
    }
    .tile-footer {
      display: flex; align-items: center; justify-content: space-between;
      padding-top: 1rem;
      border-top: 1px solid var(--border-light);
    }
    .tile-rating {
      display: flex; align-items: center; gap: .3rem;
      font-size: .8rem; color: var(--text-dark); font-weight: 600;
    }
    .stars { color: #f5c842; font-size: .75rem; }
    .tile-duration { font-size: .78rem; color: var(--text-body); display: flex; align-items: center; gap: .3rem; }
    .tile-price {
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-weight: 800; font-size: 1.05rem; color: var(--teal-vivid);
    }
    .tile-price.free { color: #0d9a6a; }

    /* ── HOW IT WORKS ── */
    .how { overflow: hidden; background: var(--bg-soft); }
    .how-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 6rem;
      align-items: center;
      margin-top: 4rem;
    }
    .steps { display: flex; flex-direction: column; gap: 2rem; }
    .step {
      display: flex; gap: 1.5rem;
      align-items: flex-start;
    }
    .step-num {
      flex-shrink: 0;
      width: 44px; height: 44px;
      border-radius: 12px;
      border: 1.5px solid var(--border-light);
      display: flex; align-items: center; justify-content: center;
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-weight: 800; font-size: .9rem;
      color: var(--mint);
      transition: background .3s, border-color .3s;
    }
    .step:hover .step-num { background: rgba(16,176,158,.08); border-color: var(--mint); }
    .step-content h3 {
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-weight: 700; font-size: 1rem;
      color: var(--text-dark); margin-bottom: .4rem;
    }
    .step-content p { font-size: .88rem; color: var(--text-body); line-height: 1.6; }

    .how-visual {
      position: relative;
      display: flex; align-items: center; justify-content: center;
    }
    .how-circle {
      width: 360px; height: 360px;
      border-radius: 50%;
      border: 1px solid var(--border-light);
      display: flex; align-items: center; justify-content: center;
      position: relative;
    }
    .how-circle::before {
      content: '';
      position: absolute; inset: 20px;
      border-radius: 50%;
      border: 1px dashed rgba(16,176,158,.25);
      animation: spin 20s linear infinite;
    }
    .how-circle::after {
      content: '';
      position: absolute; inset: 0;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(16,176,158,.06) 0%, transparent 70%);
    }
    @keyframes spin { to { transform: rotate(360deg); } }
    .how-center {
      text-align: center; position: relative; z-index: 1;
    }
    .how-center-icon { font-size: 3.5rem; line-height: 1; margin-bottom: .5rem; }
    .how-center-label {
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-weight: 800; font-size: 1.2rem; color: var(--text-dark);
    }
    .how-center-sub { font-size: .8rem; color: var(--text-body); }
    .orbit-dot {
      position: absolute;
      width: 48px; height: 48px;
      border-radius: 50%;
      background: #162424;
      border: 1px solid var(--border-light);
      display: flex; align-items: center; justify-content: center;
      font-size: 1.2rem;
      box-shadow: 0 4px 16px rgba(0,0,0,.3);
    }
    .orbit-dot:nth-child(2) { top: -24px; left: 50%; transform: translateX(-50%); }
    .orbit-dot:nth-child(3) { bottom: -24px; left: 50%; transform: translateX(-50%); }
    .orbit-dot:nth-child(4) { left: -24px; top: 50%; transform: translateY(-50%); }
    .orbit-dot:nth-child(5) { right: -24px; top: 50%; transform: translateY(-50%); }

    /* ── TESTIMONIALS ── */
    .testimonials { background: var(--bg-light); }
    .test-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.4rem;
      margin-top: 3.5rem;
    }
    .test-card {
      background: #162424;
      border: 1px solid var(--border-light);
      border-radius: 18px;
      padding: 2rem;
      position: relative;
      overflow: hidden;
      box-shadow: 0 2px 12px rgba(0,0,0,.2);
      transition: border-color .3s, transform .3s, box-shadow .3s;
    }
    .test-card:hover { border-color: rgba(16,176,158,.25); transform: translateY(-3px); box-shadow: 0 16px 36px rgba(16,176,158,.08); }
    .test-quote {
      font-size: 3rem;
      color: var(--mint);
      opacity: .18;
      line-height: 1;
      font-family: Georgia, serif;
      position: absolute; top: 1rem; right: 1.5rem;
    }
    .test-text {
      font-size: .92rem;
      line-height: 1.7;
      color: var(--text-body);
      margin-bottom: 1.5rem;
      font-style: italic;
      font-weight: 300;
    }
    .test-author { display: flex; align-items: center; gap: .9rem; }
    .test-avatar {
      width: 40px; height: 40px;
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      font-size: 1.1rem;
      flex-shrink: 0;
    }
    .test-name {
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-weight: 700; font-size: .9rem; color: var(--text-dark);
    }
    .test-role { font-size: .75rem; color: var(--text-body); }

    /* ── CTA BANNER ── */
    .cta-section {
      padding: 5rem 4rem;
    }
    .cta-inner {
      background: linear-gradient(135deg, var(--teal-mid) 0%, var(--teal-vivid) 60%, rgba(18,121,110,.6) 100%);
      border: 1px solid rgba(93,230,212,.2);
      border-radius: 28px;
      padding: 5rem;
      display: flex; align-items: center; justify-content: space-between;
      position: relative; overflow: hidden;
    }
    .cta-inner::before {
      content: '';
      position: absolute; top: -60px; right: -60px;
      width: 400px; height: 400px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(93,230,212,.15), transparent 60%);
    }
    .cta-text { max-width: 520px; position: relative; z-index: 1; }
    .cta-text h2 {
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-weight: 800; font-size: clamp(1.8rem, 3vw, 2.6rem);
      line-height: 1.1; letter-spacing: -.03em;
      color: var(--white); margin-bottom: 1rem;
    }
    .cta-text p { font-size: .95rem; color: rgba(244,250,249,.7); line-height: 1.7; font-weight: 300; }
    .cta-actions { position: relative; z-index: 1; display: flex; flex-direction: column; gap: .8rem; align-items: center; }
    .cta-actions .btn-primary { font-size: 1rem; padding: 1rem 2.4rem; }
    .cta-note { font-size: .75rem; color: rgba(244,250,249,.5); }

    /* ── FOOTER ── */
    footer {
      border-top: 1px solid var(--border-light);
      background: var(--bg-soft);
      padding: 4rem 4rem 2.5rem;
    }
    .footer-top {
      display: grid;
      grid-template-columns: 1.8fr 1fr 1fr 1fr;
      gap: 4rem;
      margin-bottom: 3rem;
    }
    .footer-logo {
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-weight: 800; font-size: 1.4rem;
      color: var(--text-dark); letter-spacing: -.02em;
      text-decoration: none;
      display: inline-block; margin-bottom: 1rem;
    }
    .footer-logo span { color: var(--mint); }
    .footer-desc { font-size: .85rem; color: var(--text-body); line-height: 1.7; max-width: 280px; }
    .footer-socials { display: flex; gap: .7rem; margin-top: 1.5rem; }
    .social-btn {
      width: 36px; height: 36px;
      border: 1px solid var(--border-light);
      border-radius: 8px;
      display: flex; align-items: center; justify-content: center;
      color: var(--text-body);
      text-decoration: none; font-size: .85rem;
      transition: border-color .2s, color .2s, background .2s;
    }
    .social-btn:hover { border-color: var(--mint); color: var(--mint); background: rgba(16,176,158,.06); }
    .footer-col h4 {
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-weight: 700; font-size: .85rem;
      letter-spacing: .04em; text-transform: uppercase;
      color: var(--text-dark); margin-bottom: 1.2rem;
    }
    .footer-col ul { list-style: none; display: flex; flex-direction: column; gap: .7rem; }
    .footer-col a {
      font-size: .85rem; color: var(--text-body);
      text-decoration: none; transition: color .2s;
    }
    .footer-col a:hover { color: var(--mint); }
    .footer-bottom {
      display: flex; align-items: center; justify-content: space-between;
      padding-top: 2rem;
      border-top: 1px solid var(--border-light);
      font-size: .78rem; color: var(--text-body);
    }

    /* ── ANIMATIONS ── */
    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(24px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    .reveal {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity .6s ease, transform .6s ease;
    }
    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* ── RESPONSIVE ── */
    @media (max-width: 1100px) {
      .hero-visual { display: none; }
      .hero-countdown { display: none; }
      .cats-grid { grid-template-columns: repeat(2, 1fr); }
      .courses-grid { grid-template-columns: repeat(2, 1fr); }
      .how-grid { grid-template-columns: 1fr; }
      .how-visual { display: none; }
      .test-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-top { grid-template-columns: 1fr 1fr; gap: 2.5rem; }
    }

    @media (max-width: 700px) {
      nav { padding: 1rem 1.5rem; }
      .nav-links { display: none; }
      section, .hero { padding: 5rem 1.5rem; }
      .cats-grid, .courses-grid, .test-grid { grid-template-columns: 1fr; }
      .hero-stats { gap: 1.5rem; }
      .cta-inner { flex-direction: column; gap: 2rem; padding: 2.5rem; }
      .footer-top { grid-template-columns: 1fr; gap: 2rem; }
      .footer-bottom { flex-direction: column; gap: .8rem; text-align: center; }
    }

    /* ── NAV DROPDOWN ── */
    .nav-dropdown { position: relative; }

    .nav-dropdown-toggle {
      display: flex; align-items: center; gap: .35rem;
      cursor: pointer;
    }
    .nav-dropdown-toggle svg {
      transition: transform .25s ease;
      opacity: .6;
    }
    .nav-dropdown:hover .nav-dropdown-toggle svg {
      transform: rotate(180deg); opacity: 1;
    }

    .nav-dropdown-menu {
      position: absolute; top: calc(100% + 4px); left: 50%;
      transform: translateX(-50%) translateY(-6px);
      width: 260px;
      background: rgba(10,46,46,.97);
      border: 1px solid rgba(93,230,212,.18);
      border-radius: 16px;
      padding: .6rem;
      backdrop-filter: blur(20px);
      box-shadow: 0 20px 50px rgba(0,0,0,.3);
      opacity: 0; pointer-events: none;
      transition: opacity .25s ease, transform .25s ease;
    }
    .nav-dropdown:hover .nav-dropdown-menu {
      opacity: 1; pointer-events: all;
      transform: translateX(-50%) translateY(0);
    }

    .nav-dropdown-menu::before {
      content: '';
      position: absolute; top: -6px; left: 50%;
      transform: translateX(-50%) rotate(45deg);
      width: 10px; height: 10px;
      background: rgba(10,46,46,.97);
      border-left: 1px solid rgba(93,230,212,.18);
      border-top: 1px solid rgba(93,230,212,.18);
    }
    .nav-dropdown-menu::after {
      content: '';
      position: absolute; top: -14px; left: 0;
      width: 100%; height: 14px;
    }

    .nav-dropdown-item {
      display: flex; align-items: center; gap: .9rem;
      padding: .75rem 1rem;
      border-radius: 10px;
      text-decoration: none;
      transition: background .2s;
    }
    .nav-dropdown-item:hover { background: rgba(93,230,212,.08); }

    .dd-icon { font-size: 1.2rem; flex-shrink: 0; }
    .dd-title { font-family: 'SF Pro Display', -apple-system, sans-serif; font-weight: 700; font-size: .85rem; color: #fff; }
    .dd-sub { font-size: .74rem; color: rgba(244,250,249,.45); margin-top: .1rem; }

    nav.scrolled .nav-dropdown-menu { background: rgba(10,46,46,.97); }

    .back-link {
      position: absolute;
      top: 30px;
      left: 40px;
      display: flex;
      align-items: center;
      gap: 6px;
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-size: 14px;
      font-weight: 500;
      color: #8ab8b4;
      text-decoration: none;
      padding: 6px 10px;
      border-radius: 6px;
      transition: all .25s ease;
    }
    .back-link:hover {
      background: rgba(93,230,212,.08);
      color: #f0faf9;
      transform: translateX(-3px);
    }
    .back-icon {
      width: 18px;
      height: 18px;
    }

    /* ── HERO COUNTDOWN — posición absoluta centrada ── */
    .hero-countdown {
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
      z-index: 3;

      display: flex;
      flex-direction: column;
      align-items: center;
      gap: .7rem;

      background: rgba(7, 30, 30, .75);
      border: 1px solid rgba(93, 230, 212, .2);
      border-radius: 18px;
      padding: 1.6rem 2rem 1.3rem;
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);

      box-shadow: 0 20px 60px rgba(0,0,0,.35),
                  0 0 0 1px rgba(93,230,212,.06);

      width: max-content;
      overflow: hidden;
    }

    .hero-countdown::before {
      content: '';
      position: absolute;
      top: -40px; left: -40px;
      width: 140px; height: 140px;
      background: radial-gradient(circle, rgba(93,230,212,.1), transparent 70%);
      pointer-events: none;
    }

    .countdown-label {
      display: flex;
      align-items: center;
      gap: .5rem;
      font-size: .72rem;
      font-weight: 700;
      letter-spacing: .12em;
      text-transform: uppercase;
      color: var(--mint);
    }

    .countdown-dot {
      width: 6px; height: 6px;
      background: var(--mint);
      border-radius: 50%;
      animation: pulse 2s infinite;
      flex-shrink: 0;
    }

    .countdown-timer {
      display: flex;
      align-items: center;
      gap: .4rem;
    }

    .countdown-unit {
      display: flex;
      flex-direction: column;
      align-items: center;
      background: rgba(7, 30, 30, .6);
      border: 1px solid rgba(93, 230, 212, .18);
      border-radius: 10px;
      padding: .6rem .9rem .45rem;
      min-width: 62px;
    }

    .countdown-num {
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-weight: 800;
      font-size: 2rem;
      color: var(--mint-light);
      letter-spacing: -.02em;
      line-height: 1;
      font-variant-numeric: tabular-nums;
    }

    .countdown-unit-label {
      font-size: .58rem;
      font-weight: 600;
      letter-spacing: .1em;
      text-transform: uppercase;
      color: var(--text-muted);
      margin-top: .25rem;
    }

    .countdown-sep {
      font-size: 1.5rem;
      font-weight: 700;
      color: rgba(93,230,212,.3);
      line-height: 1;
      margin-bottom: .35rem;
    }

    .countdown-date {
      font-size: .7rem;
      font-weight: 500;
      color: var(--text-muted);
      letter-spacing: .06em;
    }

    .countdown-available {
      font-family: 'SF Pro Display', -apple-system, sans-serif;
      font-weight: 700;
      font-size: 1rem;
      color: var(--mint-light);
      text-align: center;
      animation: fadeUp .5s ease both;
    }

    .countdown-timer.expired .countdown-num {
      color: var(--text-muted);
      opacity: .4;
    }