:root{--cds-surface-0: #FFFFFF;--cds-surface-1: #FFFFFF;--cds-surface-2: #FBFBFC;--cds-surface-3: #F3F4F6;--cds-border: #E5E7EB;--cds-border-subtle: #F3F4F6;--cds-text-primary: #111827;--cds-text-secondary: #4B5563;--cds-text-muted: #9CA3AF;--cds-text-on-accent: #FFFFFF;--luka-orange: #FF6800;--luka-orange-hover: #E55D00;--luka-orange-subtle: #FFF4ED;--luka-orange-light: #FFECE0;--luka-orange-border: #FFD2B8;--luka-orange-gradient: linear-gradient(135deg, #FF7A1A 0%, #FF5200 100%);--luka-green: #10B981;--luka-green-hover: #059669;--luka-green-subtle: #ECFDF5;--luka-amber: #F59E0B;--luka-amber-subtle: #FEF3C7;--cds-primary: #FF6800;--cds-primary-hover: #E55D00;--cds-primary-subtle: #FFF4ED;--cds-green: #10B981;--cds-green-hover: #059669;--cds-green-subtle: #ECFDF5;--cds-clay: #FF6800;--cds-clay-hover: #E55D00;--cds-clay-subtle: #FFF4ED;--cds-cactus: #10B981;--cds-cactus-subtle: #ECFDF5;--cds-heather: #7C3AED;--cds-heather-subtle: #F0E9FB;--cds-slate: #2563EB;--cds-slate-subtle: #E8F0FE;--pastel-blue: #E8F0FE;--pastel-green: #ECFDF5;--pastel-purple: #F0E9FB;--pastel-orange: #FFF4ED;--cds-success: #10B981;--cds-success-bg: #ECFDF5;--cds-success-text: #065F46;--cds-warning: #F59E0B;--cds-warning-bg: #FEF3C7;--cds-warning-text: #92400E;--cds-danger: #EF4444;--cds-danger-bg: #FEE2E2;--cds-danger-text: #991B1B;--font-sans: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;--font-display: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", monospace;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 20px;--radius-xl: 24px;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 14px rgba(0, 0, 0, .06);--shadow-lg: 0 12px 32px rgba(0, 0, 0, .09);--shadow-hero: 0 20px 48px -12px rgba(255, 104, 0, .22);--header-height: 72px}[data-theme=dark]{--cds-surface-0: #101214;--cds-surface-1: #17191C;--cds-surface-2: #1F2226;--cds-surface-3: #2A2E33;--cds-border: #374151;--cds-border-subtle: #242830;--cds-text-primary: #F9FAFB;--cds-text-secondary: #D1D5DB;--cds-text-muted: #9CA3AF;--cds-text-on-accent: #FFFFFF;--luka-orange: #FF7A1A;--luka-orange-hover: #FF8C33;--luka-orange-subtle: #2D1808;--luka-orange-light: #381E0A;--luka-orange-border: #592809;--luka-orange-gradient: linear-gradient(135deg, #FF7A1A 0%, #E55D00 100%);--luka-green: #2FD35F;--luka-green-hover: #29CC57;--luka-green-subtle: #0E2615;--luka-amber: #FBBF24;--luka-amber-subtle: #2E1F08;--cds-primary: #FF7A1A;--cds-primary-hover: #FF8C33;--cds-primary-subtle: #2D1808;--cds-green: #2FD35F;--cds-green-hover: #29CC57;--cds-green-subtle: #0E2615;--cds-clay: #FF7A1A;--cds-clay-hover: #FF8C33;--cds-clay-subtle: #2D1808;--cds-cactus: #2FD35F;--cds-cactus-subtle: #0E2615;--cds-heather: #A78BFA;--cds-heather-subtle: #241D38;--cds-slate: #60A5FA;--cds-slate-subtle: #16283F;--pastel-blue: #16283F;--pastel-green: #0E2615;--pastel-purple: #241D38;--pastel-orange: #2D1808;--cds-success: #2FD35F;--cds-success-bg: #0E2615;--cds-success-text: #A7F3D0;--cds-warning: #FBBF24;--cds-warning-bg: #2E1F08;--cds-warning-text: #FDE68A;--cds-danger: #F87171;--cds-danger-bg: #3B1212;--cds-danger-text: #FECACA;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow-md: 0 4px 14px rgba(0, 0, 0, .5);--shadow-lg: 0 12px 32px rgba(0, 0, 0, .6);--shadow-hero: 0 20px 48px -12px rgba(255, 122, 26, .25)}*{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-sans);background-color:var(--cds-surface-0);color:var(--cds-text-primary);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{min-height:100vh;background-color:var(--cds-surface-0);color:var(--cds-text-primary)}a{color:inherit;text-decoration:none}button,input,select,textarea{font-family:inherit}.font-display{font-family:var(--font-display)}.font-mono{font-family:var(--font-mono)}.container-custom{width:100%;max-width:1200px;margin-left:auto;margin-right:auto;padding-left:1.5rem;padding-right:1.5rem}.container-narrow{width:100%;max-width:820px;margin-left:auto;margin-right:auto;padding-left:1.5rem;padding-right:1.5rem}::-webkit-scrollbar{width:7px;height:7px}::-webkit-scrollbar-track{background:var(--cds-surface-0)}::-webkit-scrollbar-thumb{background:var(--cds-border);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--cds-text-muted)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.7rem 1.6rem;border-radius:var(--radius-full);font-size:1rem;font-weight:500;cursor:pointer;transition:all .15s ease-in-out;border:1px solid transparent;-webkit-user-select:none;user-select:none;white-space:nowrap}.btn-lg{padding:.95rem 2.4rem;font-size:1.25rem;font-weight:500}.btn-primary{background-color:var(--luka-orange);color:#fff;box-shadow:var(--shadow-sm)}.btn-primary:hover{background-color:var(--luka-orange-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background-color:var(--cds-surface-1);color:var(--cds-text-primary);border-color:var(--cds-border);box-shadow:var(--shadow-sm)}.btn-secondary:hover{background-color:var(--cds-surface-2);border-color:var(--cds-border)}[data-theme=dark] .btn-secondary{background-color:var(--cds-surface-2);color:var(--cds-text-primary);border:1px solid var(--cds-border)}[data-theme=dark] .btn-secondary:hover{background-color:var(--cds-surface-3);border-color:#6b7280}.btn-ghost{background-color:transparent;color:var(--cds-text-secondary)}.btn-ghost:hover{background-color:var(--cds-surface-2);color:var(--cds-text-primary)}.btn-white{background-color:#fff;color:#111827;border:1px solid #E5E7EB;box-shadow:var(--shadow-md)}.btn-white:hover{transform:translateY(-1px);box-shadow:var(--shadow-lg);background-color:#f9fafb}[data-theme=dark] .btn-white{background-color:#2a2e33;color:#f9fafb;border-color:#4b5563}[data-theme=dark] .btn-white:hover{background-color:#374151;border-color:#6b7280}.luka-speech-bubble{max-width:320px;padding:12px 18px;background-color:var(--cds-surface-1);border:2px solid var(--luka-orange-border);border-radius:18px;box-shadow:var(--shadow-md);color:var(--cds-text-primary);font-size:.92rem;line-height:1.45;font-weight:600;position:relative;animation:fadeInUp .3s ease}[data-theme=dark] .luka-speech-bubble{background-color:#1a1d21;border:2px solid rgba(255,122,26,.4);color:#f9fafb;box-shadow:0 8px 24px -4px #0009}.card{background-color:var(--cds-surface-1);border:1px solid var(--cds-border);border-radius:var(--radius-lg);transition:all .2s ease}.card:hover{border-color:var(--cds-border);box-shadow:var(--shadow-md)}.badge{display:inline-flex;align-items:center;gap:.35rem;padding:.2rem .6rem;border-radius:var(--radius-full);font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.03em}.badge-beginner{background-color:var(--cds-green-subtle);color:var(--cds-green-hover)}.badge-intermediate{background-color:var(--pastel-orange);color:#c26a1b}.badge-advanced{background-color:var(--cds-heather-subtle);color:var(--cds-heather)}.prose-reader{font-size:1.05rem;line-height:1.75;color:var(--cds-text-primary)}.prose-reader h1{font-size:2.25rem;font-weight:700;margin-top:1.5rem;margin-bottom:1.25rem;line-height:1.25}.prose-reader h2{font-size:1.75rem;font-weight:600;margin-top:2rem;margin-bottom:1rem;line-height:1.3}.prose-reader h3{font-size:1.35rem;font-weight:600;margin-top:1.75rem;margin-bottom:.75rem}.prose-reader h4{font-size:1.15rem;font-weight:600;margin-top:1.25rem;margin-bottom:.5rem}.prose-reader p{margin-bottom:1.25rem}.prose-reader ul,.prose-reader ol{margin-bottom:1.25rem;padding-left:1.5rem}.prose-reader li{margin-bottom:.5rem}.prose-reader strong{color:var(--cds-text-primary);font-weight:600}.prose-reader code{font-family:var(--font-mono);font-size:.88em;background-color:var(--cds-surface-2);padding:.15rem .35rem;border-radius:var(--radius-sm);border:1px solid var(--cds-border-subtle)}.code-block{background-color:#18181b;color:#f4f4f5;border-radius:var(--radius-md);overflow:hidden;margin:1.5rem 0;border:1px solid #27272A;font-family:var(--font-mono)}.code-block-header{display:flex;align-items:center;justify-content:space-between;padding:.5rem 1rem;background-color:#212124;border-bottom:1px solid #2E2E33;font-size:.75rem;color:#a1a1aa}.code-block pre{padding:1rem;overflow-x:auto;font-size:.88rem;line-height:1.5}.certificate-frame{position:relative;background:#fcfbf7;color:#1e1b18;border:12px double var(--luka-orange);padding:3.5rem 3rem;border-radius:8px;box-shadow:0 25px 60px -15px #0003;text-align:center}[data-theme=dark] .certificate-frame{background:#1b1b1e;color:#f5f4f0;border:12px double var(--luka-orange)}