:root{--primary-50: #f0fdf4;--primary-100: #dcfce7;--primary-200: #bbf7d0;--primary-300: #86efac;--primary-400: #4ade80;--primary-500: #22c55e;--primary-600: #16a34a;--primary-700: #15803d;--primary-800: #166534;--primary-900: #14532d;--primary-950: #052e16;--accent-50: #fffbeb;--accent-100: #fef3c7;--accent-400: #fbbf24;--accent-500: #f59e0b;--accent-600: #d97706;--neutral-50: #f8fafc;--neutral-100: #f1f5f9;--neutral-200: #e2e8f0;--neutral-300: #cbd5e1;--neutral-400: #94a3b8;--neutral-500: #64748b;--neutral-600: #475569;--neutral-700: #334155;--neutral-800: #1e293b;--neutral-900: #0f172a;--neutral-950: #020617;--success: #16a34a;--warning: #d97706;--error: #dc2626;--info: #2563eb;--bg-main: #f8fafc;--bg-surface: #ffffff;--bg-surface-elevated: #f1f5f9;--bg-glass: rgba(255, 255, 255, .95);--border-color: #cbd5e1;--border-glow: rgba(22, 163, 74, .3);--text-primary: #0f172a;--text-secondary: #334155;--text-muted: #64748b;--font-sans: "Noto Sans TC", "Inter", "PingFang HK", "Microsoft JhengHei", sans-serif;--font-display: "Noto Sans TC", "Outfit", "PingFang HK", sans-serif;--font-mono: "JetBrains Mono", monospace;--shadow-sm: 0 1px 3px rgba(15, 23, 42, .05);--shadow-md: 0 6px 18px rgba(15, 23, 42, .06);--shadow-lg: 0 16px 36px rgba(15, 23, 42, .09);--shadow-glow: 0 0 25px rgba(22, 163, 74, .2)}[data-theme=dark]{--bg-main: #0f172a;--bg-surface: #1e293b;--bg-surface-elevated: #334155;--bg-glass: rgba(30, 41, 59, .92);--border-color: rgba(255, 255, 255, .15);--border-glow: rgba(34, 197, 94, .3);--text-primary: #f8fafc;--text-secondary: #e2e8f0;--text-muted: #94a3b8;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .2);--shadow-md: 0 8px 25px rgba(0, 0, 0, .3);--shadow-lg: 0 20px 50px rgba(0, 0, 0, .4)}*{box-sizing:border-box;margin:0;padding:0}html,body{font-family:var(--font-sans);background-color:var(--bg-main);color:var(--text-primary);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}body.modal-open{overflow:hidden!important}button,a{transition:all .2s cubic-bezier(.4,0,.2,1)}button:active{transform:scale(.98)}.glass-panel{background-color:var(--bg-surface);border:1px solid var(--border-color);border-radius:20px;box-shadow:var(--shadow-md);transition:transform .25s cubic-bezier(.4,0,.2,1),box-shadow .25s cubic-bezier(.4,0,.2,1)}.glass-panel-hover:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}@keyframes pulseLive{0%,to{opacity:1;transform:scale(1)}50%{opacity:.6;transform:scale(1.15)}}.live-dot{animation:pulseLive 2s ease-in-out infinite}.desktop-only{display:flex!important}.mobile-only{display:none!important}.stats-grid{grid-template-columns:repeat(4,1fr)}.bento-span-2{grid-column:span 2}.hero-split-grid{display:grid;grid-template-columns:1fr 1fr;gap:3.5rem;align-items:center}@media(max-width:992px){.hero-split-grid{grid-template-columns:1fr!important;gap:2.5rem!important}.stats-grid{grid-template-columns:repeat(2,1fr)!important}}.infinite-testimonial-card{flex:0 0 calc(33.333% - 1rem);min-width:280px}.nav-arrow-btn{position:absolute;top:50%;transform:translateY(-50%);z-index:25;width:52px;height:52px;border-radius:50%;background:var(--bg-surface-elevated);backdrop-filter:blur(16px) saturate(180%);-webkit-backdrop-filter:blur(16px) saturate(180%);border:1px solid var(--border-color);box-shadow:0 8px 24px -4px #0000001f,0 2px 6px -1px #0000000f;color:var(--text-primary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .35s cubic-bezier(.34,1.56,.64,1)}.nav-arrow-btn.prev{left:-26px}.nav-arrow-btn.next{right:-26px}.nav-arrow-btn:hover{transform:translateY(-50%) scale(1.14);background:var(--bg-surface);border-color:var(--primary-500);color:var(--primary-600);box-shadow:0 12px 32px #16a34a40,0 0 0 3px #16a34a26}.nav-arrow-btn:active{transform:translateY(-50%) scale(.96)}@media(max-width:992px){.infinite-testimonial-card{flex:0 0 calc(50% - .75rem)}.nav-arrow-btn.prev{left:-12px}.nav-arrow-btn.next{right:-12px}}@media(max-width:640px){.infinite-testimonial-card{flex:0 0 100%}.nav-arrow-btn{width:42px;height:42px}}@media(max-width:768px){.testimonial-side-card{display:none!important}.testimonials-grid{grid-template-columns:1fr!important}}@media(max-width:768px){.desktop-only{display:none!important}.mobile-only{display:flex!important}.bento-span-2{grid-column:span 1!important}.dashboard-sidebar-desktop{display:none!important}.dashboard-main-content{padding:1rem!important}.dashboard-topbar-title{font-size:1rem!important}}@media(min-width:769px){.dashboard-mobile-drawer{display:none!important}}.course-player-stage-grid{display:flex;flex-direction:column;min-height:calc(100vh - 60px)}@media(min-width:1024px){.course-player-stage-grid{display:grid;grid-template-columns:1fr 340px}}.dashboard-stats-grid-4{display:grid;grid-template-columns:repeat(1,1fr);gap:1.25rem;margin-bottom:2.25rem}@media(min-width:640px){.dashboard-stats-grid-4{grid-template-columns:repeat(2,1fr)}}@media(min-width:1024px){.dashboard-stats-grid-4{grid-template-columns:repeat(4,1fr)}}.sidebar-wrapper{width:260px;max-width:85vw;background-color:var(--bg-surface);border-right:1px solid var(--border-color);padding:1.25rem 1rem;display:flex;flex-direction:column;justify-content:space-between;height:100%;overflow-y:auto;box-shadow:var(--shadow-lg)}.sidebar-brand-box{display:flex;align-items:center;gap:.75rem;padding-bottom:1.5rem;margin-bottom:1.5rem;border-bottom:1px solid var(--border-color)}.sidebar-nav-list{display:flex;flex-direction:column;gap:.35rem}.sidebar-link-item{display:flex;align-items:center;gap:.75rem;padding:.65rem .85rem;border-radius:12px;font-size:.9rem;font-weight:500;color:var(--text-primary);background-color:transparent;border-left:4px solid transparent;transition:all .2s ease}.sidebar-link-item:hover{background-color:var(--bg-surface-elevated)}.sidebar-link-item-active{font-weight:700;background-color:#22c55e26;color:var(--primary-600);border-left:4px solid var(--primary-600)}.sidebar-footer-box{padding-top:1rem;border-top:1px solid var(--border-color);display:flex;flex-direction:column;gap:.35rem}.sidebar-logout-button{display:flex;align-items:center;gap:.75rem;padding:.65rem .85rem;border-radius:12px;font-size:.9rem;color:var(--error);background:transparent;border:none;cursor:pointer;width:100%;text-align:left}.sidebar-logout-button:hover{background-color:#ef44441a}.form-input-custom,.form-select-custom,.form-textarea-custom{width:100%;padding:.75rem;border-radius:12px;background-color:var(--bg-surface-elevated);border:1px solid var(--border-color);color:var(--text-primary);outline:none;font-family:inherit;font-size:.9rem}.form-input-custom:focus,.form-select-custom:focus,.form-textarea-custom:focus{border-color:var(--primary-500);box-shadow:0 0 0 3px var(--border-glow)}.tab-pill-btn{padding:.55rem 1.25rem;border-radius:9999px;font-size:.88rem;font-weight:500;background-color:var(--bg-surface-elevated);color:var(--text-secondary);border:1px solid var(--border-color);cursor:pointer;white-space:nowrap;flex-shrink:0;transition:all .2s ease;display:flex;align-items:center;gap:.4rem}.tab-pill-btn-active{font-weight:700;background-color:#22c55e24;color:var(--primary-600);border:1px solid rgba(34,197,94,.35)}.gradient-text-animated{background:linear-gradient(135deg,var(--primary-600) 0%,var(--accent-500) 40%,#3b82f6 70%,var(--primary-500) 100%);background-size:250% 250%;-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:gradientShift 6s ease infinite}@keyframes gradientShift{0%{background-position:0% 50%}50%{background-position:100% 50%}to{background-position:0% 50%}}.login-page-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background-color:var(--bg-main);background:radial-gradient(circle at 50% 30%,var(--bg-surface-elevated) 0%,var(--bg-main) 70%,#020617 100%);padding:2.5rem 1.5rem}.login-split-card{display:grid;grid-template-columns:1fr 1.1fr;max-width:1060px;width:100%;border-radius:24px;overflow:hidden;border:1px solid var(--border-color);box-shadow:var(--shadow-lg);background-color:var(--bg-surface)}@media(max-width:900px){.login-split-card{grid-template-columns:1fr;max-width:540px}.login-left-showcase{display:none}}.login-left-showcase{background:linear-gradient(145deg,#0f172a,#1e293b,#064e3b);padding:3.5rem 2.5rem;color:#fff;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}.login-right-form{padding:3rem 2.5rem;display:flex;flex-direction:column;justify-content:center}@media(max-width:640px){.login-right-form{padding:2rem 1.25rem}}.role-select-btn{display:flex;align-items:center;justify-content:space-between;padding:1.25rem;background-color:var(--bg-surface-elevated);border:1px solid var(--border-color);border-radius:16px;cursor:pointer;text-align:left;transition:all .25s cubic-bezier(.16,1,.3,1);color:var(--text-primary);width:100%}.role-select-btn:hover{transform:translateY(-2px);border-color:var(--primary-500);box-shadow:0 8px 24px #22c55e1f}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);color:var(--text-primary);font-weight:800;letter-spacing:-.02em}a{color:inherit;text-decoration:none}