:root{--color-gold: #f59e0b;--color-gold-hover: #d97706;--color-blue-deep: #0f172a;--color-blue-primary: #1e3a8a;--color-emerald-deep: #064e3b;--color-emerald-dark: #022c22;--color-emerald-primary: #047857;--color-emerald-mint: #10b981;--color-surface-bg: #f8fafc}body{font-family:Plus Jakarta Sans,sans-serif;color:#1e293b;background-color:#f8fafc;overflow-x:hidden}.gradient-hero{background:linear-gradient(135deg,#0f172a,#1e3a8a)}.gradient-emerald-hero{background:linear-gradient(135deg,#064e3b,#065f46 60%,#022c22)}.gradient-emerald-card{background:linear-gradient(135deg,#064e3b,#047857)}.glass-card{background:#ffffffd9;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid rgba(226,232,240,.8)}.glass-nav{background:#fffffff0;backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-top:1px solid rgba(226,232,240,.8)}.shadow-modern{box-shadow:0 10px 30px -5px #0000000a,0 4px 6px -2px #00000005}.shadow-emerald-glow{box-shadow:0 15px 35px -8px #064e3b40,0 8px 16px -4px #064e3b1a}.btn-primary{background-color:var(--color-gold);color:#0f172a;transition:all .3s cubic-bezier(.4,0,.2,1)}.btn-primary:active{transform:scale(.95)}.section-divider{height:4px;width:60px;background-color:var(--color-gold);border-radius:2px}html{scroll-behavior:smooth}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .6s ease-out forwards}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:#f1f5f9}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:10px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}.perspective-1000{perspective:1000px}.preserve-3d{transform-style:preserve-3d}.backface-hidden{backface-visibility:hidden}.rotate-y-180{transform:rotateY(180deg)}.font-script{font-family:Dancing Script,cursive}@media(max-width:768px)and (orientation:portrait){.fullscreen-landscape:fullscreen{width:100vh;height:100vw;transform:rotate(90deg);transform-origin:center center}.fullscreen-landscape:-webkit-full-screen{width:100vh;height:100vw;transform:rotate(90deg);transform-origin:center center}.fullscreen-landscape:-moz-full-screen{width:100vh;height:100vw;transform:rotate(90deg);transform-origin:center center}.fullscreen-landscape:-ms-fullscreen{width:100vh;height:100vw;transform:rotate(90deg);transform-origin:center center}}.lesson-beat{will-change:opacity,transform;transform:translateZ(0);backface-visibility:hidden}.custom-scrollbar::-webkit-scrollbar{width:4px}.custom-scrollbar::-webkit-scrollbar-track{background:transparent}.custom-scrollbar::-webkit-scrollbar-thumb{background:#ffffff14;border-radius:4px}.custom-scrollbar::-webkit-scrollbar-thumb:hover{background:#ffffff2e;:root{--color-gold: #f59e0b;--color-gold-hover: #d97706;--color-blue-deep: #0f172a;--color-blue-primary: #1e3a8a;--color-emerald-deep: #064e3b;--color-emerald-dark: #022c22;--color-emerald-primary: #047857;--color-emerald-mint: #10b981;--color-surface-bg: #f8fafc}body{font-family:Plus Jakarta Sans,sans-serif;color:#1e293b;background-color:#f8fafc;overflow-x:hidden}.gradient-hero{background:linear-gradient(135deg,#0f172a,#1e3a8a)}.gradient-emerald-hero{background:linear-gradient(135deg,#064e3b,#065f46 60%,#022c22)}.gradient-emerald-card{background:linear-gradient(135deg,#064e3b,#047857)}.glass-card{background:#ffffffd9;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid rgba(226,232,240,.8)}.glass-nav{background:#fffffff0;backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-top:1px solid rgba(226,232,240,.8)}.shadow-modern{box-shadow:0 10px 30px -5px #0000000a,0 4px 6px -2px #00000005}.shadow-emerald-glow{box-shadow:0 15px 35px -8px #064e3b40,0 8px 16px -4px #064e3b1a}.btn-primary{background-color:var(--color-gold);color:#0f172a;transition:all .3s cubic-bezier(.4,0,.2,1)}.btn-primary:active{transform:scale(.95)}.section-divider{height:4px;width:60px;background-color:var(--color-gold);border-radius:2px}html{scroll-behavior:smooth}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .6s ease-out forwards}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:#f1f5f9}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:10px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}.perspective-1000{perspective:1000px}.preserve-3d{transform-style:preserve-3d}.backface-hidden{backface-visibility:hidden}.rotate-y-180{transform:rotateY(180deg)}.font-script{font-family:Dancing Script,cursive}@media(max-width:768px)and (orientation:portrait){.fullscreen-landscape:fullscreen{width:100vh;height:100vw;transform:rotate(90deg);transform-origin:center center}.fullscreen-landscape:-webkit-full-screen{width:100vh;height:100vw;transform:rotate(90deg);transform-origin:center center}.fullscreen-landscape:-moz-full-screen{width:100vh;height:100vw;transform:rotate(90deg);transform-origin:center center}.fullscreen-landscape:-ms-fullscreen{width:100vh;height:100vw;transform:rotate(90deg);transform-origin:center center}}.lesson-beat{will-change:opacity,transform;transform:translateZ(0);backface-visibility:hidden}.custom-scrollbar::-webkit-scrollbar{width:4px}.custom-scrollbar::-webkit-scrollbar-track{background:transparent}.custom-scrollbar::-webkit-scrollbar-thumb{background:#ffffff14;border-radius:4px}.custom-scrollbar::-webkit-scrollbar-thumb:hover{background:#ffffff2e}.curriculum-title{font-family:Plus Jakarta Sans,sans-serif;font-weight:800;font-size:clamp(1.25rem,2.5vw,2.25rem);background:linear-gradient(135deg,var(--color-gold) 0%,var(--color-gold-hover) 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1.15;letter-spacing:-.02em;filter:drop-shadow(0 2px 4px rgba(0,0,0,.1))}.curriculum-subtitle{font-family:Plus Jakarta Sans,sans-serif;font-weight:600;font-size:clamp(.75rem,1.2vw,.95rem);color:#64748b;text-transform:uppercase;letter-spacing:.1em;margin-bottom:1.25rem}.slide-deck-container{width:100%;aspect-ratio:16 / 9;background:#fff;border-radius:20px;overflow:hidden;box-shadow:0 10px 25px -5px #00000014;display:flex;position:relative;border:1px solid #f1f5f9}.slide-content-pane{flex:1;padding:clamp(1.25rem,3vw,2.5rem);display:flex;flex-direction:column;justify-content:center}.slide-media-pane{flex:1;position:relative;overflow:hidden;background:#f8fafc}.supplemental-image{width:100%;height:100%;object-fit:cover;opacity:.9;transition:transform .8s cubic-bezier(.4,0,.2,1)}.slide-media-pane:hover .supplemental-image{transform:scale(1.03)}.slide-bullet{font-size:clamp(.85rem,1.3vw,1.05rem);line-height:1.5;color:#334155;margin-bottom:.75rem;opacity:0;transform:translate(-15px);animation:slideInBullet .4s ease-out forwards}@keyframes slideInBullet{to{opacity:1;transform:translate(0)}}.lesson-player-backdrop{background-color:var(--color-blue-deep);min-height:100vh;padding:1.5rem}@keyframes br_pulse{0%{transform:scale(.95);opacity:.8}50%{transform:scale(1.4);opacity:0}to{transform:scale(.95);opacity:0}}#dmermaid,[id^=dmermaid],.mermaid-error,.error-icon,.error-text{display:none!important}.scrollbar-hide::-webkit-scrollbar{display:none}.scrollbar-hide{-ms-overflow-style:none;scrollbar-width:none}.cold-open{opacity:0;font-size:clamp(1.1rem,2vw,1.6rem);text-align:center;font-weight:300;letter-spacing:.04em;color:#f8fafc;text-shadow:0 0 12px rgba(255,255,255,.15);animation:coldOpen 4s cubic-bezier(.4,0,.2,1) forwards}@keyframes coldOpen{0%{opacity:0;transform:scale(.98)}25%{opacity:1;transform:scale(1)}75%{opacity:1;transform:scale(1)}to{opacity:0;transform:scale(1.02)}}.title-reveal-wrapper{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}.title-reveal{opacity:0;transform:translateY(15px) scale(.96);animation:titleIn 1.4s cubic-bezier(.16,1,.3,1) forwards;color:#fff;font-weight:700;font-size:clamp(1.2rem,2.2vw,1.8rem);letter-spacing:-.02em}.subtitle-reveal{opacity:0;animation:subtitleIn 1.2s cubic-bezier(.16,1,.3,1) forwards;animation-delay:.9s;color:#ffffffb3;font-weight:400;font-size:clamp(.75rem,1.2vw,.95rem)}@keyframes titleIn{to{opacity:1;transform:translateY(0) scale(1)}}@keyframes subtitleIn{to{opacity:1}}.focus-isolation{font-size:clamp(1rem,1.8vw,1.4rem);font-weight:400;color:#fff;text-align:center;line-height:1.45;opacity:0;transform:scale(.96);animation:focusZoom 1.2s cubic-bezier(.16,1,.3,1) forwards}@keyframes focusZoom{to{opacity:1;transform:scale(1)}}.reveal-slow{opacity:0;animation:revealIn 1s cubic-bezier(.16,1,.3,1) forwards;animation-delay:var(--d, 0s)}@keyframes revealIn{to{opacity:1}}.impact-beat{font-size:clamp(1.1rem,2vw,1.5rem);font-weight:700;color:var(--color-gold);text-align:center;transform:scale(.9);opacity:0;animation:impactIn .8s cubic-bezier(.34,1.56,.64,1) forwards}@keyframes impactIn{70%{transform:scale(1.06);opacity:1}to{transform:scale(1);opacity:1}}.rhythm-flow{animation:breathe 3.5s ease-in-out infinite}@keyframes breathe{0%,to{opacity:.75;transform:scale(.99)}50%{opacity:1;transform:scale(1)}}.scene-theory{background:radial-gradient(circle at center,#0f172a,#020617)}.scene-example{background:radial-gradient(circle at center,#064e3b,#022c22)}.scene-quiz{background:radial-gradient(circle at center,#1e3a8a,#172554)}.scene-transition{transition:background 2.5s cubic-bezier(.4,0,.2,1)}.step-reveal{opacity:0;animation:stepIn .7s cubic-bezier(.16,1,.3,1) forwards;animation-delay:var(--d, 0s)}@keyframes stepIn{to{opacity:1;transform:translateY(0)}}.contrast-text{opacity:0;animation:contrastIn .8s cubic-bezier(.16,1,.3,1) forwards;animation-delay:var(--d, 0s)}@keyframes contrastIn{to{opacity:1}}.reflection-hold{opacity:0;color:#fffffff2;font-weight:300;font-style:italic;text-align:center;animation:reflectIn 1.5s cubic-bezier(.16,1,.3,1) forwards}@keyframes reflectIn{to{opacity:1}}.outro-soft{opacity:0;animation:fadeOutSoft 3.5s cubic-bezier(.4,0,.2,1) forwards}@keyframes fadeOutSoft{0%{opacity:0}25%{opacity:1}75%{opacity:1}to{opacity:0}}}