/* ========== RESET & BASE ========== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0a0f;--bg2:#111118;--surface:#16161f;--surface2:#1e1e2a;
  --border:#2a2a3a;--text:#e4e4ed;--text2:#9595a8;--text3:#6b6b80;
  --accent:#6c5ce7;--accent2:#a29bfe;--accent-glow:rgba(108,92,231,.25);
  --green:#00d2a0;--orange:#ff9f43;--red:#ff6b6b;
  --radius:12px;--radius-lg:20px;
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{max-width:1100px;margin:0 auto;padding:0 24px}

/* ========== NAV ========== */
.nav{display:flex;justify-content:space-between;align-items:center;padding:20px 32px;position:fixed;top:0;left:0;right:0;z-index:100;backdrop-filter:blur(20px);background:rgba(10,10,15,.7);border-bottom:1px solid var(--border)}
.nav-logo{font-weight:800;font-size:1.25rem;letter-spacing:-.5px}
.nav-cta{font-size:.875rem;font-weight:600;color:var(--accent2);transition:color .2s}
.nav-cta:hover{color:#fff}

/* ========== BUTTONS ========== */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:var(--radius);font-weight:600;font-size:1rem;transition:all .25s;cursor:pointer;border:none}
.btn-primary{background:linear-gradient(135deg,var(--accent),#8b5cf6);color:#fff;box-shadow:0 4px 24px var(--accent-glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 32px var(--accent-glow)}
.btn-ghost{border:1px solid var(--border);color:var(--text2);background:transparent}
.btn-ghost:hover{border-color:var(--accent);color:var(--text)}
.btn-lg{padding:18px 40px;font-size:1.125rem;border-radius:var(--radius-lg)}

/* ========== HERO ========== */
.hero{position:relative;padding:140px 0 80px;text-align:center;overflow:hidden}
.hero-glow{position:absolute;top:-200px;left:50%;transform:translateX(-50%);width:800px;height:800px;background:radial-gradient(circle,var(--accent-glow) 0%,transparent 70%);pointer-events:none;opacity:.6}
.hero-content{position:relative;z-index:1}
.badge{display:inline-block;padding:8px 20px;border-radius:100px;background:var(--surface2);border:1px solid var(--border);font-size:.8rem;font-weight:600;color:var(--accent2);margin-bottom:24px;letter-spacing:.5px}
h1{font-size:clamp(2.5rem,6vw,4.5rem);font-weight:900;line-height:1.1;letter-spacing:-2px;margin-bottom:24px}
.gradient-text{background:linear-gradient(135deg,var(--accent2),var(--green));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-sub{max-width:640px;margin:0 auto 36px;font-size:1.125rem;color:var(--text2);line-height:1.7}
.hero-ctas{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:60px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;max-width:700px;margin:0 auto}
.stat{text-align:center}
.stat-num{display:block;font-size:2rem;font-weight:800;color:var(--accent2);font-family:'JetBrains Mono',monospace}
.stat-label{font-size:.75rem;color:var(--text3);text-transform:uppercase;letter-spacing:1px;margin-top:4px}

/* ========== SECTIONS ========== */
.section{padding:100px 0}
.section-dark{background:var(--bg2)}
.section-title{font-size:clamp(1.75rem,4vw,2.75rem);font-weight:800;text-align:center;margin-bottom:16px;letter-spacing:-1px}
.section-sub{text-align:center;color:var(--text2);max-width:600px;margin:0 auto 56px;font-size:1.05rem}

/* ========== PROBLEM ========== */
.problem-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.problem-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;transition:border-color .3s}
.problem-card:hover{border-color:var(--red)}
.problem-icon{font-size:2rem;margin-bottom:16px}
.problem-card h3{font-size:1.1rem;font-weight:700;margin-bottom:8px}
.problem-card p{color:var(--text2);font-size:.925rem}

/* ========== FEATURES ========== */
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}
.feature-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;transition:all .3s}
.feature-card:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,0,0,.3)}
.feature-icon{font-size:2rem;margin-bottom:16px}
.feature-card h3{font-size:1.05rem;font-weight:700;margin-bottom:8px}
.feature-card p{color:var(--text2);font-size:.9rem;line-height:1.6}

/* ========== ARCHITECTURE ========== */
.arch-pipeline{display:flex;align-items:stretch;gap:12px;justify-content:center;flex-wrap:wrap}
.arch-step{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 28px;flex:1;min-width:240px;max-width:320px;text-align:center;transition:border-color .3s}
.arch-step:hover{border-color:var(--green)}
.arch-num{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--green));color:#fff;font-weight:800;display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:1.125rem}
.arch-step h3{font-size:1.05rem;font-weight:700;margin-bottom:8px}
.arch-step p{color:var(--text2);font-size:.875rem}
.arch-arrow{display:flex;align-items:center;font-size:1.5rem;color:var(--text3);font-weight:700}

/* ========== CURRICULUM ========== */
.curriculum-list{display:flex;flex-direction:column;gap:12px;max-width:750px;margin:0 auto}
.module-card{display:flex;gap:20px;align-items:flex-start;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;transition:all .3s}
.module-card:hover{border-color:var(--accent);transform:translateX(6px)}
.mod-num{font-family:'JetBrains Mono',monospace;font-weight:700;font-size:1.125rem;color:var(--accent2);min-width:32px;padding-top:2px}
.module-card h3{font-size:1rem;font-weight:700;margin-bottom:4px}
.module-card p{color:var(--text2);font-size:.875rem}

/* ========== CODE PREVIEW ========== */
.code-block{max-width:750px;margin:0 auto;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);background:#0d1117}
.code-header{display:flex;align-items:center;gap:8px;padding:12px 16px;background:var(--surface);border-bottom:1px solid var(--border)}
.code-dot{width:12px;height:12px;border-radius:50%}
.code-dot.red{background:#ff5f57}.code-dot.yellow{background:#febc2e}.code-dot.green{background:#28c840}
.code-filename{margin-left:8px;font-family:'JetBrains Mono',monospace;font-size:.8rem;color:var(--text3)}
pre{padding:24px;overflow-x:auto;font-family:'JetBrains Mono',monospace;font-size:.825rem;line-height:1.7;color:#c9d1d9}
.kw{color:#ff7b72}.cls{color:#ffa657}.fn{color:#d2a8ff}.cmt{color:#8b949e}.num{color:#79c0ff}

/* ========== BUNDLE ========== */
.bundle-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:24px;max-width:800px;margin:0 auto}
.bundle-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px;position:relative}
.bundle-card.main{border-color:var(--accent)}
.bundle-tag{display:inline-block;padding:4px 14px;border-radius:100px;background:var(--accent);color:#fff;font-size:.7rem;font-weight:700;letter-spacing:1px;margin-bottom:16px}
.bundle-card h3{font-size:1.25rem;font-weight:700;margin-bottom:16px}
.bundle-card li{padding:6px 0;font-size:.925rem;color:var(--text2)}

/* ========== TRUST ========== */
.trust-content{max-width:700px;margin:0 auto;text-align:center}
.trust-content>p{color:var(--text2);font-size:1.05rem;line-height:1.8;margin-bottom:36px}
.trust-points{display:grid;grid-template-columns:1fr 1fr;gap:16px;text-align:left}
.trust-point{display:flex;gap:12px;align-items:center;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;font-size:.9rem;color:var(--text2)}
.trust-point span{font-size:1.25rem}

/* ========== FAQ ========== */
.faq-list{max-width:700px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:border-color .3s}
.faq-item[open]{border-color:var(--accent)}
.faq-item summary{padding:20px 24px;font-weight:600;cursor:pointer;font-size:1rem;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::after{content:'+';font-size:1.25rem;color:var(--text3);transition:transform .2s}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--accent2)}
.faq-item p{padding:0 24px 20px;color:var(--text2);font-size:.925rem;line-height:1.7}
.faq-item code{background:var(--surface2);padding:2px 8px;border-radius:4px;font-family:'JetBrains Mono',monospace;font-size:.85rem}

/* ========== PRICING ========== */
.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;max-width:1100px;margin:0 auto;align-items:stretch;}
.pricing-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px 32px;text-align:center;position:relative;overflow:hidden;display:flex;flex-direction:column}
.pricing-card.recommended{border:2px solid var(--accent);transform:scale(1.02);z-index:2;background:var(--bg2)}
.pricing-card.recommended::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--accent),var(--green))}
.pricing-card h3{font-size:1.3rem;font-weight:800;margin-bottom:8px;line-height:1.3}
.price-badge{display:inline-block;padding:6px 18px;border-radius:100px;background:linear-gradient(135deg,var(--accent),#8b5cf6);color:#fff;font-size:.75rem;font-weight:700;letter-spacing:1px;margin-bottom:20px;align-self:center}
.price{font-size:3.5rem;font-weight:900;margin-bottom:4px;letter-spacing:-2px}
.price-dollar{font-size:1.75rem;vertical-align:top;margin-right:2px;color:var(--text3)}
.price-sub{color:var(--text3);font-size:.85rem;margin-bottom:28px;min-height:30px}
.price-features{text-align:left;margin-bottom:32px;flex-grow:1}
.price-features li{padding:10px 0;font-size:.9rem;color:var(--text2);border-bottom:1px solid var(--border)}
.price-features li:last-child{border-bottom:none}
.price-guarantee{margin-top:16px;font-size:.8rem;color:var(--text3)}

/* ========== FOOTER ========== */
.footer{padding:40px 0;text-align:center;border-top:1px solid var(--border)}
.footer p{color:var(--text3);font-size:.875rem}
.footer-disclaimer{margin-top:8px;font-size:.75rem;max-width:600px;margin-left:auto;margin-right:auto}

/* ========== RESPONSIVE ========== */
@media(max-width:768px){
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .arch-pipeline{flex-direction:column;align-items:center}
  .arch-arrow{transform:rotate(90deg)}
  .trust-points{grid-template-columns:1fr}
  .bundle-grid{grid-template-columns:1fr}
  .nav{padding:16px 20px}
  h1{letter-spacing:-1px}
}
@media(max-width:480px){
  .hero{padding:120px 0 60px}
  .section{padding:60px 0}
  .pricing-card{padding:36px 24px}
}

/* ========== ANIMATIONS ========== */
@keyframes fadeUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.animate-in{opacity:0;animation:fadeUp .6s ease forwards}
.animate-in:nth-child(2){animation-delay:.1s}
.animate-in:nth-child(3){animation-delay:.2s}
.animate-in:nth-child(4){animation-delay:.15s}
.animate-in:nth-child(5){animation-delay:.2s}
.animate-in:nth-child(6){animation-delay:.25s}