:root{--sgc-deep: #065066;--sgc-teal: #4693a5;--sgc-maya: #9abbc7;--surface: #ffffff;--surface-hover: #f8fafc;--surface-muted: #EAECF4;--text-primary: #1a1a1a;--text-secondary: #64748b;--text-tertiary: #94a3b8;--accent: #065066;--accent-light: rgba(6, 80, 102, .08);--border-light: rgba(0, 0, 0, .06);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .12);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--transition: .25s cubic-bezier(.4, 0, .2, 1)}body.sgc-course-view{font-family:Libre Franklin,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--surface-muted);color:var(--text-primary)}#main-content>footer{width:100vw;position:relative;left:50%;transform:translate(-50%);margin-bottom:-64px}.course-hero{position:relative;background:var(--sgc-deep);overflow:hidden}.course-hero .hero-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(to right,#065066d9,#06506699,#06506666);pointer-events:none}.course-hero-title{font-size:clamp(1.75rem,4vw,2.5rem);font-weight:300;letter-spacing:-.02em;color:#fff}.sgc-hero-actions{flex-wrap:wrap;justify-content:center;gap:12px}.sgc-hero-action{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;font-size:.85rem;font-weight:500;color:#fffffff2;text-decoration:none;background:#ffffff26;border:1px solid rgba(255,255,255,.25);border-radius:24px;transition:all var(--transition);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.sgc-hero-action:hover{background:#ffffff40;border-color:#fff6}.hero-back-link{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:20px;background:#ffffff1f;border:1px solid rgba(255,255,255,.2);transition:all var(--transition)}.hero-back-link:hover{background:#fff3}.sgc-hero-subtitle{font-size:.95rem;font-weight:400;color:#fffc;margin-top:8px}.course-section-heading{font-size:1.35rem;font-weight:300;color:var(--text-primary);margin:0 0 20px;padding-bottom:14px;border-bottom:2px solid var(--sgc-maya);letter-spacing:-.01em;display:flex;align-items:center;gap:12px}.course-section-heading:before{content:"";width:4px;height:24px;background:linear-gradient(to bottom,var(--sgc-deep),var(--sgc-teal));border-radius:2px;flex-shrink:0}.sgc-main-layout{max-width:1200px;margin:0 auto;padding:32px 48px 64px;width:100%;box-sizing:border-box}.sgc-sidebar-content-flex{display:flex;gap:20px}.sgc-content-card{background:var(--surface);border-radius:var(--radius-lg);box-shadow:0 1px 3px #0000000a,0 4px 20px #00000008;border:1px solid rgba(255,255,255,.6);padding:32px 32px 24px}@media (max-width: 1023px){.sgc-main-layout{padding:0 0 64px;gap:0}.sgc-content-card{border-radius:0;box-shadow:none;border:none}aside{background:#fff}}.sgc-overview-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;font-size:.875rem;font-weight:500;border-radius:24px;transition:all var(--transition);text-decoration:none}.sgc-overview-btn-primary{background:var(--sgc-teal);color:#fff;border:1px solid transparent}.sgc-overview-btn-primary:hover{background:var(--sgc-deep)}.sgc-overview-btn-secondary{background:#ffffffb3;color:var(--text-primary);border:1px solid var(--border-light);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.sgc-overview-btn-secondary:hover{background:#ffffffe6;border-color:var(--sgc-maya)}.sgc-cta-section{background:linear-gradient(135deg,var(--sgc-deep) 0%,var(--sgc-teal) 100%);border-radius:var(--radius-lg);padding:40px 32px;text-align:center;color:#fff}@media (min-width: 1024px){.sgc-aside{position:static!important;transform:none!important;translate:none!important;z-index:auto!important;width:280px!important;max-width:none!important;flex-shrink:0;height:auto!important;padding:0!important;overflow:visible!important;background:transparent!important}.sidebar-inner-wrap{position:sticky;top:90px;background:#ffffffbf;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-radius:var(--radius-lg);padding:0;box-shadow:0 1px 3px #0000000a,0 8px 24px #0000000a;border:1px solid rgba(255,255,255,.7);overflow-y:auto;max-height:calc(100vh - 110px);scrollbar-width:none}.sidebar-inner-wrap::-webkit-scrollbar{display:none}}.sidebar-section{padding:12px 14px}.sidebar-section+.sidebar-section{border-top:1px solid var(--border-light)}.sidebar-toc{padding:12px 10px 8px}.sidebar-label{font-size:.68rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--sgc-teal);margin:0 0 6px;padding:0 4px}.sidebar-progress-card{position:relative}.sidebar-progress-ring{position:relative;width:44px;height:44px;flex-shrink:0}.sidebar-progress-pct{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;font-size:.6rem;font-weight:700;color:var(--sgc-deep)}.sidebar-enroll-btn{display:flex;align-items:center;justify-content:center;gap:6px;width:100%;padding:10px 16px;font-size:.8rem;font-weight:600;color:#fff;background:var(--sgc-teal);border:none;border-radius:var(--radius-sm);transition:all var(--transition);text-decoration:none;cursor:pointer}.sidebar-enroll-btn:hover{filter:brightness(.9)}.sidebar-tools{display:flex;flex-direction:column;gap:6px}.sidebar-tool-btn{display:flex;align-items:center;gap:6px;padding:9px 12px;font-size:.82rem;font-weight:500;color:var(--text-secondary);background:#00000008;border:1px solid var(--border-light);border-radius:10px;transition:all var(--transition);cursor:pointer;white-space:nowrap;width:100%}.sidebar-tool-btn:hover{color:var(--sgc-deep);background:var(--accent-light);border-color:var(--sgc-maya)}.sidebar-toc-entries{display:flex;flex-direction:column;gap:1px}.sidebar-toc-link{display:flex;align-items:center;gap:10px;padding:8px 10px;color:var(--text-secondary);text-decoration:none;font-size:.85rem;font-weight:430;line-height:1.35;border-radius:8px;transition:all var(--transition);border-left:2px solid transparent;margin-left:-2px}.sidebar-toc-link:hover{color:var(--sgc-deep);background:var(--accent-light);border-left-color:var(--sgc-maya)}.sidebar-toc-link.active{color:var(--sgc-deep);background:var(--accent-light);border-left-color:var(--sgc-teal);font-weight:520}.sidebar-toc-num{display:flex;align-items:center;justify-content:center;width:26px;height:26px;font-size:.72rem;font-weight:600;color:var(--text-tertiary);background:#0000000a;border-radius:6px;flex-shrink:0;transition:all var(--transition)}.sidebar-toc-link.active .sidebar-toc-num{color:#fff;background:var(--sgc-teal)}.sidebar-toc-sections{padding:2px 0 4px 34px}.sidebar-toc-section{display:block;width:100%;text-align:left;padding:7px 12px;font-size:.78rem;line-height:1.4;color:var(--text-tertiary);text-decoration:none;border-radius:4px;transition:all var(--transition);cursor:pointer;background:none;border:none}.sidebar-toc-section:hover{color:var(--sgc-deep);background:var(--accent-light)}.sidebar-toc-section.active{color:var(--sgc-deep);background:var(--accent-light);font-weight:500}.lessons-fab{position:fixed;bottom:calc(24px + env(safe-area-inset-bottom,0px));right:20px;z-index:41;width:56px;height:56px;border-radius:50%;background:var(--sgc-deep);color:#fff;border:none;align-items:center;justify-content:center;font-size:1.4rem;cursor:pointer;box-shadow:0 2px 8px #0650664d,0 6px 20px #06506626;transition:all .3s cubic-bezier(.4,0,.2,1)}[data-audio-player=minimized] .lessons-fab{bottom:calc(110px + env(safe-area-inset-bottom,0px))}[data-audio-player=expanded] .lessons-fab{opacity:0;pointer-events:none;transform:scale(.8)}.lessons-fab:hover{transform:scale(1.05);box-shadow:0 4px 12px #06506659,0 8px 28px #06506633}.lessons-fab:active{transform:scale(.95)}.lessons-fab-active{background:var(--sgc-teal);border-radius:50%}.lessons-fab-icon{position:absolute;transition:all .25s cubic-bezier(.4,0,.2,1)}.mobile-sheet-search{display:flex;align-items:center;gap:10px;width:100%;padding:12px 16px;font-size:.9rem;color:var(--text-tertiary);background:#fff;border:1px solid var(--border-light);border-radius:12px;cursor:pointer;transition:all var(--transition)}.mobile-sheet-search:active{background:var(--accent-light);border-color:var(--sgc-maya)}.mobile-toc-entries{display:flex;flex-direction:column;gap:2px}.mobile-toc-link{display:flex;align-items:center;gap:12px;padding:12px;color:var(--text-secondary);text-decoration:none;font-size:.95rem;font-weight:430;line-height:1.35;border-radius:12px;transition:all var(--transition);border-left:3px solid transparent}.mobile-toc-link:hover,.mobile-toc-link:active{color:var(--sgc-deep);background:var(--accent-light)}.mobile-toc-link.active{color:var(--sgc-deep);background:var(--accent-light);border-left-color:var(--sgc-teal);font-weight:520}.mobile-toc-num{display:flex;align-items:center;justify-content:center;width:28px;height:28px;font-size:.75rem;font-weight:600;color:var(--text-tertiary);background:#0000000d;border-radius:8px;flex-shrink:0;transition:all var(--transition)}.mobile-toc-link.active .mobile-toc-num{color:#fff;background:var(--sgc-teal)}.mobile-toc-sections{padding:2px 0 6px 44px}.mobile-toc-section{display:block;width:100%;text-align:left;padding:10px 14px;font-size:.85rem;line-height:1.4;color:var(--text-tertiary);text-decoration:none;border-radius:8px;transition:all var(--transition);cursor:pointer;background:none;border:none}.mobile-toc-section:hover,.mobile-toc-section:active{color:var(--sgc-deep);background:var(--accent-light)}.mobile-toc-section.active{color:var(--sgc-deep);background:var(--accent-light);font-weight:500}.mobile-sheet-lang-btn{display:flex;align-items:center;gap:10px;width:100%;padding:12px 14px;font-size:.9rem;font-weight:450;color:var(--text-secondary);background:#fff;border:1px solid var(--border-light);border-radius:12px;cursor:pointer;transition:all var(--transition)}.mobile-sheet-lang-btn:active{background:var(--accent-light)}.mobile-course-nav{background:#06506699;-webkit-backdrop-filter:blur(20px) saturate(180%);backdrop-filter:blur(20px) saturate(180%);border-bottom:1px solid rgba(255,255,255,.1);box-shadow:0 1px 8px #0000001a;padding:8px 12px}.mobile-course-nav .mobile-nav-scroll{gap:8px}.mobile-course-nav-button{color:#fffffff2;padding:8px 14px;font-size:.75rem;font-weight:500;background:#ffffff26;border:1px solid rgba(255,255,255,.25);border-radius:20px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);transition:all var(--transition)}.mobile-course-nav-button:hover{background:#ffffff40;border-color:#fff6}.lesson-action-bar{background:linear-gradient(135deg,#ffffffdb,#4693a524);border:1px solid rgba(6,80,102,.16);box-shadow:0 1px 2px #0000000f,0 8px 18px #0650661f;border-radius:999px;padding:6px 8px;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}.lesson-action-button{color:var(--text-secondary);transition:all var(--transition)}.lesson-action-icon{width:36px;height:36px;display:grid;place-items:center;border-radius:999px;background:linear-gradient(145deg,#ffffffb3,#4693a529)}.lesson-action-button:hover{background:#06506629;color:var(--sgc-deep)}.lesson-action-button.is-active{background:var(--accent-light);color:var(--sgc-deep)}.audio-toggle-icon{transition:transform .2s ease,opacity .2s ease}.lesson-action-button.is-active .audio-toggle-icon{transform:rotate(90deg)}.audio-player-shell{background:#ffffffd9;border:1px solid rgba(6,80,102,.16);box-shadow:0 6px 20px #0650661f;border-radius:16px;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.audio-player-button{background:linear-gradient(135deg,#ffffffbf,#4693a538);border:1px solid rgba(6,80,102,.2);box-shadow:0 6px 18px #0650662e;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}.audio-player-button:hover{filter:brightness(1.05)}.audio-player-range{accent-color:#4693a5}.audio-player-range::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:14px;height:14px;border-radius:999px;background:linear-gradient(135deg,#065066f2,#4693a5f2);box-shadow:0 2px 6px #06506640;border:1px solid rgba(255,255,255,.8)}.audio-player-range::-moz-range-thumb{width:14px;height:14px;border-radius:999px;background:linear-gradient(135deg,#065066f2,#4693a5f2);box-shadow:0 2px 6px #06506640;border:1px solid rgba(255,255,255,.8)}.audio-player-chip{background:#06506614;border:1px solid rgba(6,80,102,.12);color:var(--sgc-deep);border-radius:999px;padding:4px 10px}.audio-player-header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 14px;border-bottom:1px solid rgba(6,80,102,.12);background:linear-gradient(135deg,#ffffffbf,#4693a51f);border-top-left-radius:16px;border-top-right-radius:16px}.audio-player-pill{display:inline-flex;align-items:center;gap:6px;background:#ffffffb3;border:1px solid rgba(6,80,102,.12);border-radius:999px;padding:4px 10px;font-size:.7rem;color:var(--sgc-deep)}.audio-speed-button{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;background:#ffffffb3;border:1px solid rgba(6,80,102,.12);color:var(--sgc-deep);font-weight:500}.audio-speed-menu{background:#fffffff2;border:1px solid rgba(6,80,102,.16);box-shadow:0 10px 20px #0650661f;border-radius:12px}.line-clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.line-clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}mark{padding:.125rem .25rem;border-radius:.125rem}kbd{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace}@media print{.section-content{position:static!important;left:auto!important;top:auto!important;display:block!important}}.prose img{height:auto!important;border-radius:.5rem;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;min-width:200px;float:right!important;margin:.5rem 0 1rem 1.5rem!important;max-width:45%!important;background:linear-gradient(90deg,#f0f0f0 25%,#e0e0e0,#f0f0f0 75%);background-size:200% 100%;animation:loading 1.5s ease-in-out infinite}.prose img[src]:not([src=""]){animation:none}@keyframes loading{0%{background-position:200% 0}to{background-position:-200% 0}}.prose{overflow-wrap:break-word;word-wrap:break-word;word-break:break-word}.prose table{display:table;width:100%;border-collapse:collapse;border-spacing:0;font-size:.9rem;line-height:1.5}.prose table th,.prose table td{word-break:normal;overflow-wrap:normal;padding:6px 14px;border:1px solid rgba(0,0,0,.12);vertical-align:middle}.prose table thead tr:first-child th{background:var(--sgc-deep, #065066);color:#fff;font-weight:600;text-align:center;white-space:nowrap}.prose table thead tr:not(:first-child) th{background:transparent;color:var(--text-primary, #1a1a1a);font-weight:400;text-align:left;white-space:normal}.prose table thead tr:not(:first-child) th:has(>strong:only-child){white-space:nowrap}.prose table thead tr:not(:first-child):nth-child(2n) th{background:var(--surface-hover, #f8fafc)}.prose table thead tr:first-child [rowspan]{width:4px;min-width:4px;max-width:4px;padding:0;background:var(--sgc-deep, #065066);border:none;font-size:0}.prose table tbody th{background:var(--accent-light, rgba(6, 80, 102, .08));font-weight:600;white-space:nowrap}.prose table tbody tr:not(:has(td:not(:has(>strong:only-child)))) td{background:var(--sgc-teal, #4693a5);color:#fff;font-weight:600;text-align:center}.prose table tbody tr:not(:has(td:not(:has(>strong:only-child)))) td strong{color:inherit}.prose table tbody tr:has(td:not(:has(>strong:only-child)))>td:has(>strong:only-child){background:var(--accent-light, rgba(6, 80, 102, .08));font-weight:600;white-space:nowrap}.prose table tbody tr:nth-child(2n){background:var(--surface-hover, #f8fafc)}.prose table tbody tr:hover{background:#0650660a}.prose table[border]{border:none}.prose table[border] td,.prose table[border] th{border:1px solid rgba(0,0,0,.12)}.prose pre{max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.prose a{word-break:break-word;overflow-wrap:anywhere}@media (max-width: 768px){.prose img{max-width:100%!important;float:none!important;margin:1rem 0!important}}@keyframes slideInRight{0%{transform:translate(400px);opacity:0}to{transform:translate(0);opacity:1}}@keyframes slideOutRight{0%{transform:translate(0);opacity:1}to{transform:translate(400px);opacity:0}}.search-highlight{background-color:#fef08a;padding:2px 4px;border-radius:2px;font-weight:500;animation:highlightPulse 1.5s ease-in-out}@keyframes highlightPulse{0%,to{background-color:#fef08a}50%{background-color:#fde047}}.prose img[align=left],.prose .alignleft{float:left!important;margin:.5rem 1.5rem 1rem 0!important;max-width:45%!important}.prose img[align=center],.prose .aligncenter{float:none!important;margin:1.5rem auto!important;display:block!important;max-width:100%!important}.prose img.img-small{max-width:30%!important;min-width:150px}.prose img.img-medium{max-width:50%!important}.prose img.img-large{max-width:75%!important}.prose img.img-full{float:none!important;display:block!important;margin:1.5rem auto!important;max-width:100%!important}.prose p:has(>strong:only-child>em:only-child),.prose p:has(>em:only-child>strong:only-child){color:var(--sgc-teal, #4693a5);font-size:1.15rem;margin-top:1.5rem}.prose p:has(>strong:only-child>em:only-child) strong,.prose p:has(>strong:only-child>em:only-child) em,.prose p:has(>strong:only-child>em:only-child) a,.prose p:has(>em:only-child>strong:only-child) strong,.prose p:has(>em:only-child>strong:only-child) em,.prose p:has(>em:only-child>strong:only-child) a{color:inherit!important}.prose p:has(>strong:only-child):not(:has(em)){color:var(--sgc-teal, #4693a5);font-size:1.15rem;margin-top:1.5rem}.prose p:has(>strong:only-child):not(:has(em)) strong{color:inherit!important}.prose ol.numbered-list{list-style:none;counter-reset:numbered-list;padding-left:2rem;margin:.5rem 0 1rem}.prose ol.numbered-list li{counter-increment:numbered-list;margin-bottom:.35rem}.prose ol.numbered-list li:before{content:counter(numbered-list) ".";font-weight:700;margin-right:.5rem}.prose:after,.prose div:after{content:"";display:table;clear:both}@media (max-width: 768px){.prose img,.prose p img{float:none!important;max-width:100%!important;margin:1rem auto!important;display:block!important}}@keyframes modalFadeIn{0%{opacity:0}to{opacity:1}}@keyframes modalSlideUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.sgc-modal-backdrop{background:#0000004d;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);animation:modalFadeIn .2s ease-out}.sgc-modal-card{background:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg),0 0 0 1px var(--border-light);animation:modalSlideUp .25s ease-out;overflow:hidden}.sgc-modal-header{padding:20px 24px;border-bottom:1px solid var(--border-light);display:flex;justify-content:space-between;align-items:center;background:var(--surface)}.sgc-modal-header h2{font-size:1.15rem;font-weight:600;color:var(--sgc-deep);margin:0;letter-spacing:-.01em}.sgc-modal-body{padding:20px 24px;overflow-y:auto;max-height:70vh}.sgc-modal-footer{padding:16px 24px;border-top:1px solid var(--border-light)}.sgc-modal-close{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:50%;color:var(--text-tertiary);transition:all var(--transition);cursor:pointer;flex-shrink:0;border:none;background:transparent}.sgc-modal-close:hover{background:var(--accent-light);color:var(--sgc-deep)}.sgc-modal-close svg{width:18px;height:18px}.sgc-btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;font-size:.875rem;font-weight:600;color:#fff;background:var(--sgc-teal);border:none;border-radius:var(--radius-md);transition:all var(--transition);cursor:pointer}.sgc-btn-primary:hover{background:var(--sgc-deep)}.sgc-btn-primary:disabled{opacity:.6;cursor:not-allowed}.sgc-btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;font-size:.875rem;font-weight:600;color:var(--sgc-teal);background:transparent;border:1.5px solid var(--sgc-teal);border-radius:var(--radius-md);transition:all 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