:root{--bg: #0a0b0f;--bg-soft: #12141b;--bg-card: #161922;--border: #232734;--border-soft: #1b1e28;--text: #eef0f5;--text-dim: #9aa0b0;--text-faint: #666c7e;--accent: #22d3ee;--accent-2: #6366f1;--accent-ink: #04121a;--good: #34d399;--warn: #fbbf24;--radius: 14px;--radius-sm: 9px;--maxw: 1140px;--font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.55;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}h1,h2,h3{line-height:1.15;margin:0;letter-spacing:-.02em}.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}.section{padding:72px 0}.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:12px;font-weight:600;color:var(--accent)}.muted{color:var(--text-dim)}.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:999px;font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;transition:transform .15s,background .15s,border-color .15s}.btn:hover{transform:translateY(-2px)}.btn-primary{background:var(--accent);color:var(--accent-ink)}.btn-primary:hover{background:#4ae0f5}.btn-ghost{border-color:var(--border);color:var(--text);background:transparent}.btn-ghost:hover{border-color:var(--accent)}.chip{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:4px 11px;border-radius:999px;background:var(--bg-soft);border:1px solid var(--border);color:var(--text-dim)}.chip-accent{color:var(--accent);border-color:color-mix(in srgb,var(--accent) 40%,var(--border))}.chip-good{color:var(--good);border-color:color-mix(in srgb,var(--good) 40%,var(--border))}.chip-warn{color:var(--warn);border-color:color-mix(in srgb,var(--warn) 40%,var(--border))}.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 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var(--border-soft);padding:44px 0;color:var(--text-faint);font-size:14px;margin-top:40px}.site-footer .container{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}.site-footer a{color:var(--text-dim)}.site-footer a:hover{color:var(--accent)}@media (max-width: 800px){.course-hero{grid-template-columns:1fr}.buybox{position:static}.nav{gap:16px}.nav .hide-sm{display:none}.conv{grid-template-columns:1fr}.conv-side{text-align:left;align-items:flex-start}}@media (prefers-reduced-motion: reduce){*{transition-duration:.01ms!important;scroll-behavior:auto}}
