@charset "UTF-8";:root{--section-padding-x: 16px;--apple-blue: #007AFF;--apple-brown: #A2845E;--apple-cyan: #32ADE6;--apple-green: #34C759;--apple-indigo: #5856D6;--apple-mint: #00C7BE;--apple-orange: #FF9500;--apple-pink: #FF2D55;--apple-purple: #AF52DE;--apple-red: #FF3B30;--apple-teal: #30B0C7;--apple-yellow: #FFCC00;--apple-gray: #8E8E93;--apple-gray-2: #AEAEB2;--apple-gray-3: #C7C7CC;--apple-gray-4: #D1D1D6;--apple-gray-5: #E5E5EA;--apple-gray-6: #F2F2F7;--color-brand-primary: #667eea;--color-brand-secondary: #764ba2;--color-success-dark: #16a34a;--color-green-subtle: #e8f5e9;--color-green-darker: #2e7d32;--color-yellow-subtle: #fef3c7;--color-yellow-light: #fde68a;--color-yellow: #fbbf24;--color-yellow-dark: #92400e;--color-blue-subtle: #eff6ff;--color-blue-light: #bfdbfe;--color-blue: #3b82f6;--color-blue-dark: #1e40af;--color-red-subtle: #fef2f2;--color-red-light: #fecaca;--color-red-dark: #991b1b;--color-purple-subtle: #f3e5f5;--color-purple-dark: #7b1fa2;--color-orange-subtle: #fff3e0;--color-orange-dark: #ef6c00;--color-blue-bright: #90caf9;--color-yellow-bright: #ffeaa7;--color-pink-light: #f8d7da;--color-pink: #ff69b4;--color-pink-lighter: #ffb3d9;--primary: #667eea;--success: #34C759;--warning: #FF9500;--danger: #FF3B30;--teal: #30B0C7;--orange: #FF9500;--system-white: #ffffff;--primary-rgb: 102, 126, 234;--success-rgb: 52, 199, 89;--warning-rgb: 255, 149, 0;--danger-rgb: 255, 59, 48;--label-primary: #1d1d1f;--label-secondary: #6e6e73;--label-tertiary: #8e8e93;--label-quaternary: #86868b;--color-featured: #ffb800;--color-featured-dark: #ff7700;--color-featured-bright: #ffb300;--color-apple: #000000;--color-kakao: #FEE500;--color-kakao-text: #3c1e1e;--color-naver: #03C75A;--color-google: #3c7ff1;--color-facebook: #5d82d1;--gray-light: #f0f0f0;--gray-medium: #d8d8d8;--gray-border: #e0e0e0;--gray-neutral: #6b7280;--gray-background: #e5e7eb;--gray-dark: #2a2a2a;--gray-keycap-light: #5a5a5a;--gray-keycap-medium: #4a4a4a;--gray-keycap-dark: #3a3a3a;--gray-300: #d1d5db;--dark-bg-alpha-70: rgba(29, 29, 31, .7);--dark-bg-alpha-95: rgba(29, 29, 31, .95);--bs-card-border-color: #f0f0f0;--fill-primary: rgba(0, 0, 0, .04);--fill-secondary: rgba(0, 0, 0, .02);--fill-tertiary: rgba(0, 0, 0, .06);--bg-subtle: #f8f9fa;--bg-very-subtle: #f9f9f9;--bg-very-subtle-blue: #f9f9fb;--bg-card: #fbfbfd;--bg-primary: #ffffff;--bg-secondary: #f5f5f7;--bg-tertiary: #e8e8ed;--bg-quaternary: #d2d2d7;--bg-step-item: #fbfbfb;--separator: rgba(0, 0, 0, .1);--separator-primary: rgba(0, 0, 0, .08);--separator-secondary: rgba(0, 0, 0, .06);--separator-tertiary: rgba(0, 0, 0, .05);--border-light: #e5e5e7;--border-subtle: #f0f0f2;--header-bg: rgba(255, 255, 255, .9);--header-text: rgba(0, 0, 0, .8);--header-text-hover: #000000;--footer-bg: var(--white);--overlay-light: rgba(255, 255, 255, .9);--overlay-hover: rgba(255, 59, 48, .1);--shadow-red-light: rgba(255, 59, 48, .25);--apple-red-alpha-15: rgba(255, 59, 48, .15);--white: #ffffff;--white-alpha-06: rgba(255, 255, 255, .06);--white-alpha-10: rgba(255, 255, 255, .1);--white-alpha-15: rgba(255, 255, 255, .15);--white-alpha-18: rgba(255, 255, 255, .18);--white-alpha-20: rgba(255, 255, 255, .2);--white-alpha-25: rgba(255, 255, 255, .25);--white-alpha-30: rgba(255, 255, 255, .3);--white-alpha-40: rgba(255, 255, 255, .4);--white-alpha-50: rgba(255, 255, 255, .5);--white-alpha-60: rgba(255, 255, 255, .6);--white-alpha-70: rgba(255, 255, 255, .7);--white-alpha-80: rgba(255, 255, 255, .8);--white-alpha-85: rgba(255, 255, 255, .85);--white-alpha-90: rgba(255, 255, 255, .9);--white-alpha-95: rgba(255, 255, 255, .95);--white-alpha-98: rgba(255, 255, 255, .98);--black-alpha-05: rgba(0, 0, 0, .05);--black-alpha-08: rgba(0, 0, 0, .08);--black-alpha-10: rgba(0, 0, 0, .1);--black-alpha-15: rgba(0, 0, 0, .15);--black-alpha-20: rgba(0, 0, 0, .2);--black-alpha-30: rgba(0, 0, 0, .3);--black-alpha-40: rgba(0, 0, 0, .4);--black-alpha-50: rgba(0, 0, 0, .5);--black-alpha-60: rgba(0, 0, 0, .6);--dark-gray-alpha-60: rgba(30, 30, 30, .6);--blue-alpha-15: rgba(0, 123, 255, .15);--bs-primary-alpha-08: rgba(13, 110, 253, .08);--bs-primary-alpha-10: rgba(13, 110, 253, .1);--bs-primary-alpha-15: rgba(13, 110, 253, .15);--bs-primary-alpha-20: rgba(13, 110, 253, .2);--bs-primary-alpha-40: rgba(13, 110, 253, .4);--bs-success-alpha-10: rgba(25, 135, 84, .1);--bs-secondary-alpha-10: rgba(108, 117, 125, .1);--apple-blue-alpha-10: rgba(0, 122, 255, .1);--apple-blue-alpha-15: rgba(0, 122, 255, .15);--apple-blue-alpha-20: rgba(0, 122, 255, .2);--apple-red-alpha-10: rgba(255, 59, 48, .1);--apple-red-alpha-20: rgba(255, 59, 48, .2);--apple-red-alpha-30: rgba(255, 59, 48, .3);--apple-red-alpha-90: rgba(255, 59, 48, .9);--apple-red-light-alpha-20: rgba(255, 69, 58, .2);--apple-purple-alpha-10: rgba(175, 82, 222, .1);--apple-green-alpha-20: rgba(52, 199, 89, .2);--apple-green-alpha-50: rgba(52, 199, 89, .5);--apple-gray-alpha-12: rgba(142, 142, 147, .12);--apple-gray-alpha-20: rgba(142, 142, 147, .2);--brand-alpha-05: rgba(102, 126, 234, .05);--brand-alpha-06: rgba(102, 126, 234, .06);--brand-alpha-08: rgba(102, 126, 234, .08);--brand-alpha-10: rgba(102, 126, 234, .1);--brand-alpha-15: rgba(102, 126, 234, .15);--brand-alpha-20: rgba(102, 126, 234, .2);--brand-alpha-30: rgba(102, 126, 234, .3);--brand-alpha-40: rgba(102, 126, 234, .4);--brand-alpha-90: rgba(102, 126, 234, .9);--secondary-alpha-05: rgba(118, 75, 162, .05);--secondary-alpha-10: rgba(118, 75, 162, .1);--featured-alpha-10: rgba(255, 184, 0, .1);--featured-dark-alpha-10: rgba(255, 119, 0, .1);--green-alpha-02: rgba(34, 197, 94, .02);--green-alpha-05: rgba(34, 197, 94, .05);--green-alpha-10: rgba(34, 197, 94, .1);--green-alpha-12: rgba(34, 197, 94, .12);--green-alpha-30: rgba(34, 197, 94, .3);--green-secondary-alpha-02: rgba(16, 185, 129, .02);--green-secondary-alpha-05: rgba(16, 185, 129, .05);--green-secondary-alpha-10: rgba(22, 163, 74, .1);--yellow-alpha-02: rgba(245, 158, 11, .02);--yellow-alpha-05: rgba(245, 158, 11, .05);--yellow-alpha-10: rgba(245, 158, 11, .1);--yellow-alpha-30: rgba(245, 158, 11, .3);--yellow-bright-alpha-10: rgba(254, 229, 0, .1);--yellow-gold-alpha-10: rgba(255, 242, 0, .1);--yellow-secondary-alpha-02: rgba(251, 191, 36, .02);--yellow-secondary-alpha-05: rgba(251, 191, 36, .05);--yellow-secondary-alpha-10: rgba(251, 191, 36, .1);--blue-tw-alpha-10: rgba(59, 130, 246, .1);--blue-light-tw-alpha-10: rgba(96, 165, 250, .1);--gray-tw-alpha-10: rgba(107, 114, 128, .1);--gray-light-tw-alpha-10: rgba(156, 163, 175, .1);--purple-alpha-10: rgba(168, 85, 247, .1);--purple-light-alpha-10: rgba(196, 181, 253, .1);--red-alpha-10: rgba(239, 68, 68, .1);--red-light-tw-alpha-10: rgba(252, 165, 165, .1);--gradient-primary: linear-gradient(135deg, var(--color-brand-primary) 0%, var(--color-brand-secondary) 100%);--gradient-success-135: linear-gradient(135deg, var(--bs-success) 0%, var(--color-success-dark) 100%);--gradient-danger-135: linear-gradient(135deg, var(--apple-red) 0%, var(--bs-danger) 100%);--gradient-subtle-bg: linear-gradient(135deg, var(--gray-light) 0%, var(--white) 100%);--gradient-skeleton: linear-gradient(90deg, var(--gray-light) 25%, var(--gray-medium) 50%, var(--gray-light) 75%);--gradient-shine: linear-gradient(90deg, transparent, var(--white-alpha-20), transparent);--gradient-divider-strong: linear-gradient(90deg, transparent 0%, var(--brand-alpha-30) 50%, transparent 100%);--gradient-divider-subtle: linear-gradient(90deg, transparent 0%, var(--brand-alpha-20) 50%, transparent 100%);--gradient-primary-alpha-05: linear-gradient(135deg, var(--brand-alpha-05) 0%, var(--secondary-alpha-05) 100%);--gradient-primary-alpha-10: linear-gradient(135deg, var(--brand-alpha-10) 0%, var(--secondary-alpha-10) 100%);--gradient-featured-alpha-10: linear-gradient(135deg, var(--featured-alpha-10) 0%, var(--featured-dark-alpha-10) 100%);--gradient-green-alpha-02: linear-gradient(135deg, var(--green-alpha-02) 0%, var(--green-secondary-alpha-02) 100%);--gradient-green-alpha-05: linear-gradient(135deg, var(--green-alpha-05) 0%, var(--green-secondary-alpha-05) 100%);--gradient-green-alpha-10: linear-gradient(135deg, var(--green-alpha-10) 0%, var(--green-secondary-alpha-10) 100%);--gradient-yellow-alpha-02: linear-gradient(135deg, var(--yellow-alpha-02) 0%, var(--yellow-secondary-alpha-02) 100%);--gradient-yellow-alpha-05: linear-gradient(135deg, var(--yellow-alpha-05) 0%, var(--yellow-secondary-alpha-05) 100%);--gradient-yellow-alpha-10: linear-gradient(135deg, var(--yellow-alpha-10) 0%, var(--yellow-secondary-alpha-10) 100%);--gradient-yellow-warning: linear-gradient(135deg, var(--bs-warning) 0%, var(--color-yellow) 100%);--gradient-yellow-bright-gold: linear-gradient(135deg, var(--yellow-bright-alpha-10) 0%, var(--yellow-gold-alpha-10) 100%);--gradient-blue-tw-alpha-10: linear-gradient(135deg, var(--blue-tw-alpha-10) 0%, var(--blue-light-tw-alpha-10) 100%);--gradient-gray-tw-alpha-10: linear-gradient(135deg, var(--gray-tw-alpha-10) 0%, var(--gray-light-tw-alpha-10) 100%);--gradient-purple-alpha-10: linear-gradient(135deg, var(--purple-alpha-10) 0%, var(--purple-light-alpha-10) 100%);--gradient-red-alpha-10: linear-gradient(135deg, var(--red-alpha-10) 0%, var(--red-light-tw-alpha-10) 100%);--gradient-black-alpha: linear-gradient(135deg, var(--black-alpha-60) 0%, var(--black-alpha-30) 100%);--pattern-dots-white: radial-gradient(circle, var(--white-alpha-06) 1px, transparent 1px);--gradient-dark: linear-gradient(135deg, var(--gray-dark) 0%, var(--gray-dark) 100%);--gradient-keycap-light: linear-gradient(180deg, var(--gray-keycap-light) 0%, var(--gray-keycap-medium) 50%, var(--gray-keycap-dark) 100%);--gradient-keycap-pressed: linear-gradient(180deg, var(--gray-keycap-medium) 0%, var(--gray-keycap-dark) 50%, var(--gray-dark) 100%);--gradient-light: linear-gradient(180deg, transparent, rgba(255, 255, 255, .9));--gradient-featured: linear-gradient(135deg, #ffb800 0%, #ff7700 100%);--text-title-4: 1.125rem;--text-extra-large-title-3: 3rem;--text-extra-large-title-2: 4rem;--text-icon-large: 8.75rem;--text-hero-title: 3.5rem;--text-display: 2.5rem;--text-shortcut-key: 1.6rem;--text-large-title: 2.125rem;--text-title-1: 1.75rem;--text-title-2: 1.375rem;--text-title-3: 1.25rem;--text-headline: 1.0625rem;--text-body: 1.0625rem;--text-callout: 1rem;--text-subhead: .9375rem;--text-footnote: .8125rem;--text-caption-1: .75rem;--text-caption-2: .6875rem;--leading-large-title: 2.5625rem;--leading-title-1: 2.125rem;--leading-title-2: 1.75rem;--leading-title-3: 1.5625rem;--leading-headline: 1.375rem;--leading-body: 1.375rem;--leading-callout: 1.3125rem;--leading-subhead: 1.25rem;--leading-footnote: 1.125rem;--leading-caption-1: 1rem;--leading-caption-2: .8125rem;--leading-ratio-large-title: 1.206;--leading-ratio-title-1: 1.214;--leading-ratio-title-2: 1.273;--leading-ratio-title-3: 1.25;--leading-ratio-headline: 1.294;--leading-ratio-body: 1.294;--leading-ratio-callout: 1.313;--leading-ratio-subhead: 1.333;--leading-ratio-footnote: 1.385;--leading-ratio-caption-1: 1.333;--leading-ratio-caption-2: 1.182;--leading-none: 1;--leading-tight: 1.25;--leading-snug: 1.375;--leading-normal: 1.5;--leading-relaxed: 1.625;--leading-loose: 2;--tracking-tighter: -.05em;--tracking-tight: -.025em;--tracking-normal: 0;--tracking-wide: .025em;--tracking-wider: .05em;--tracking-widest: .1em;--duration-instant: 0ms;--duration-base: .25s;--ease-smooth: cubic-bezier(.4, 0, .2, 1);--ease-bounce: cubic-bezier(.68, -.55, .265, 1.55);--transition-none: none;--transition-base: all var(--duration-base) ease;--transition-smooth: all var(--duration-base) var(--ease-smooth);--transition-colors: color var(--duration-base) ease, background-color var(--duration-base) ease, border-color var(--duration-base) ease;--transition-opacity: opacity var(--duration-base) ease;--transition-transform: transform var(--duration-base) ease;--transition-shadow: box-shadow var(--duration-base) ease;--transition-background: background var(--duration-base) ease;--transition-background-color: background-color var(--duration-base) ease;--transition-color: color var(--duration-base) ease;--transition-border: border-color var(--duration-base) ease;--transition-width: width var(--duration-base) ease;--transition-size: width var(--duration-base) ease, height var(--duration-base) ease;--transition-fade-slide: opacity var(--duration-base) ease, transform var(--duration-base) ease;--shadow-offset-x-sm: 0;--shadow-offset-y-sm: 3px;--shadow-blur-sm: 10px;--shadow-offset-x-default: 0;--shadow-offset-y-default: 4px;--shadow-blur-default: 16px;--shadow-offset-x-lg: 0;--shadow-offset-y-lg: 12px;--shadow-blur-lg: 40px;--shadow-offset-x-xl: 0;--shadow-offset-y-xl: 20px;--shadow-blur-xl: 60px;--shadow-none: none;--shadow-sm: var(--shadow-offset-x-sm) var(--shadow-offset-y-sm) var(--shadow-blur-sm) var(--black-alpha-05);--shadow-default: var(--shadow-offset-x-default) var(--shadow-offset-y-default) var(--shadow-blur-default) var(--black-alpha-10);--shadow-lg: var(--shadow-offset-x-lg) var(--shadow-offset-y-lg) var(--shadow-blur-lg) var(--black-alpha-15);--shadow-xl: var(--shadow-offset-x-xl) var(--shadow-offset-y-xl) var(--shadow-blur-xl) var(--black-alpha-20);--shadow-popup: 0 20px 60px var(--black-alpha-60), 0 0 0 1px var(--white-alpha-10) inset;--shadow-brand: var(--shadow-offset-x-default) var(--shadow-offset-y-default) var(--shadow-blur-default) var(--brand-alpha-30);--shadow-primary: var(--shadow-offset-x-default) var(--shadow-offset-y-default) var(--shadow-blur-default) var(--bs-primary-alpha-40);--shadow-success: var(--shadow-offset-x-default) var(--shadow-offset-y-default) var(--shadow-blur-default) var(--green-alpha-30);--shadow-warning: var(--shadow-offset-x-default) var(--shadow-offset-y-default) var(--shadow-blur-default) var(--yellow-alpha-30);--shadow-danger: var(--shadow-offset-x-default) var(--shadow-offset-y-default) var(--shadow-blur-default) var(--apple-red-alpha-30);--shadow-info: var(--shadow-offset-x-default) var(--shadow-offset-y-default) var(--shadow-blur-default) var(--blue-alpha-15);--shadow-focus-ring: 0 0 0 4px var(--brand-alpha-10);--shadow-top-strong: 0 -10px 40px var(--black-alpha-08);--shadow-keycap-default: 0 0 0 1px var(--white-alpha-15) inset, 0 2px 0 0 var(--gray-keycap-dark), 0 3px 0 0 var(--gray-dark), 0 4px 0 0 var(--gray-dark), 0 5px 8px var(--black-alpha-50), 0 8px 15px var(--black-alpha-40);--shadow-keycap-hover: 0 0 0 1px var(--white-alpha-15) inset, 0 1px 0 0 var(--gray-keycap-dark), 0 2px 0 0 var(--gray-dark), 0 2px 4px var(--black-alpha-50), 0 4px 8px var(--black-alpha-30);--shadow-keycap-active: 0 0 0 1px var(--white-alpha-10) inset, 0 1px 0 0 var(--gray-dark), 0 1px 3px var(--black-alpha-40);--shadow-player-element: 0 2px 8px var(--black-alpha-20);--shadow-player-header: 0 2px 10px var(--overlay-dark);--shadow-player-footer: 0 -2px 10px var(--overlay-dark)}@media(prefers-color-scheme:dark){:root{--apple-blue: #0A84FF;--apple-brown: #AC8E68;--apple-cyan: #64D2FF;--apple-green: #30D158;--apple-indigo: #5E5CE6;--apple-mint: #63E6E2;--apple-orange: #FF9F0A;--apple-pink: #FF375F;--apple-purple: #BF5AF2;--apple-red: #FF453A;--apple-teal: #40CBE0;--apple-yellow: #FFD60A;--apple-gray: #8E8E93;--apple-gray-2: #636366;--apple-gray-3: #48484A;--apple-gray-4: #3A3A3C;--apple-gray-5: #2C2C2E;--apple-gray-6: #1C1C1E;--label-primary: #f5f5f7;--label-secondary: #a1a1a6;--label-tertiary: #8e8e93;--label-quaternary: #86868b;--fill-primary: rgba(255, 255, 255, .06);--fill-secondary: rgba(255, 255, 255, .04);--fill-tertiary: rgba(255, 255, 255, .08);--bg-subtle: #1c1c1e;--bg-very-subtle: #1a1a1c;--bg-card: #1c1c1e;--gradient-subtle-bg: linear-gradient(135deg, var(--bg-very-subtle) 0%, var(--bg-subtle) 100%);--gradient-skeleton: linear-gradient(90deg, var(--gray-dark) 25%, var(--gray-dark) 50%, var(--gray-dark) 75%);--bg-primary: #1c1c1e;--bg-secondary: #2c2c2e;--bg-tertiary: #3a3a3c;--bg-quaternary: #48484a;--bg-step-item: #333336;--primary: #667eea;--success: #30D158;--warning: #FF9F0A;--danger: #FF453A;--teal: #40CBE0;--orange: #FF9F0A;--system-white: #ffffff;--primary-rgb: 102, 126, 234;--success-rgb: 48, 209, 88;--warning-rgb: 255, 159, 10;--danger-rgb: 255, 69, 58;--separator: rgba(255, 255, 255, .1);--separator-primary: var(--white-alpha-10);--separator-secondary: rgba(255, 255, 255, .08);--separator-tertiary: rgba(255, 255, 255, .06);--border-light: #2c2c2e;--border-subtle: #2c2c2e;--header-bg: rgba(29, 29, 31, .9);--header-text: var(--white-alpha-80);--header-text-hover: #ffffff;--footer-bg: rgba(29, 29, 31, .9);--overlay-light: rgba(0, 0, 0, .9);--overlay-hover: rgba(255, 69, 58, .2);--color-apple: #ffffff;--bs-card-border-color: var(--separator-primary)}}[data-bs-theme=dark]{--apple-blue: #0A84FF;--apple-brown: #AC8E68;--apple-cyan: #64D2FF;--apple-green: #30D158;--apple-indigo: #5E5CE6;--apple-mint: #63E6E2;--apple-orange: #FF9F0A;--apple-pink: #FF375F;--apple-purple: #BF5AF2;--apple-red: #FF453A;--apple-teal: #40CBE0;--apple-yellow: #FFD60A;--apple-gray: #8E8E93;--apple-gray-2: #636366;--apple-gray-3: #48484A;--apple-gray-4: #3A3A3C;--apple-gray-5: #2C2C2E;--apple-gray-6: #1C1C1E;--label-primary: #f5f5f7;--label-secondary: #a1a1a6;--label-tertiary: #8e8e93;--label-quaternary: var(--label-quaternary);--fill-primary: rgba(255, 255, 255, .06);--fill-secondary: rgba(255, 255, 255, .04);--fill-tertiary: rgba(255, 255, 255, .08);--bg-subtle: #1c1c1e;--bg-very-subtle: #1a1a1c;--bg-card: #1c1c1e;--gradient-subtle-bg: linear-gradient(135deg, var(--bg-very-subtle) 0%, var(--bg-subtle) 100%);--gradient-skeleton: linear-gradient(90deg, var(--gray-dark) 25%, var(--gray-dark) 50%, var(--gray-dark) 75%);--bg-primary: #1c1c1e;--bg-secondary: #2c2c2e;--bg-tertiary: #3a3a3c;--bg-quaternary: #48484a;--bg-step-item: #333336;--primary: #667eea;--success: #30D158;--warning: #FF9F0A;--danger: 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a.text-muted:hover{color:var(--white-alpha-90)!important;text-decoration:underline!important}.faq-q-icon{font-size:var(--text-title-3);font-weight:700;color:var(--bs-primary);flex-shrink:0}.faq-a-icon{font-size:var(--text-body);font-weight:700;color:var(--bs-success);flex-shrink:0}.faq-answer{background:var(--white-alpha-06);border-top:1px solid var(--white-alpha-06);color:var(--white-alpha-80);line-height:1.6}#questionListContainer .faq-answer{background:var(--black-alpha-30);border-top:none;margin-bottom:12px;border-bottom:2px solid var(--white-alpha-10)}#questionListContainer .curriculum-section{margin-bottom:0}#questionListContainer>div:last-child .faq-answer{border-bottom:none;margin-bottom:0}#questionModal.modal[data-bs-theme=dark] .modal-content{background-color:var(--bs-dark);color:var(--white)}#questionModal.modal[data-bs-theme=dark] .modal-header{border-bottom-color:var(--white-alpha-10)}#questionModal.modal[data-bs-theme=dark] 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.dark-mode-item{display:inline!important}[data-bs-theme=dark] .light-mode-item,[data-bs-theme=light] .dark-mode-item{display:none!important}[data-bs-theme=light] .light-mode-item{display:inline!important}:root{--player-header-height: 60px;--player-footer-height: 60px;--overlay-light: var(--white-alpha-10);--overlay-medium: var(--white-alpha-15);--overlay-strong: var(--white-alpha-20);--overlay-dark: var(--black-alpha-30);--overlay-darker: var(--black-alpha-40);--border-subtle: var(--white-alpha-06);--border-light: var(--white-alpha-10);--border-medium: var(--white-alpha-20);--border-strong: var(--white-alpha-30);--primary-color: var(--bs-primary);--backdrop-blur-strong: blur(20px);--backdrop-blur-medium: blur(10px);--backdrop-blur-light: 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p{color:rgba(255,255,255,.6)!important}.player-header{flex-shrink:0;z-index:1000;height:var(--player-header-height);padding-inline:1rem;background:var(--gradient-dark);border-bottom:1px solid var(--border-subtle);backdrop-filter:var(--backdrop-blur-strong);-webkit-backdrop-filter:var(--backdrop-blur-strong);box-shadow:var(--shadow-player-header)}.player-header-nav{flex-shrink:0;align-self:stretch;display:flex;align-items:center}.player-header .btn-back{height:100%;padding-block:12px;overflow:visible}.player-footer{flex-shrink:0;z-index:1000;height:var(--player-footer-height);background:var(--gradient-dark);border-top:1px solid var(--border-subtle);backdrop-filter:var(--backdrop-blur-strong);-webkit-backdrop-filter:var(--backdrop-blur-strong);box-shadow:var(--shadow-player-footer)}.player-footer-nav{flex-shrink:0;min-width:200px;padding-inline:1rem;align-self:stretch;display:flex;align-items:center}.player-footer-nav-next{justify-content:flex-end}.player-footer .btn-nav-lecture{height:100%;padding-block:12px;overflow:visible}#player-container{flex:1;display:flex;justify-content:center;align-items:center;background:var(--color-apple);position:relative;width:100%;overflow:hidden}#main-player{position:relative;width:100%;height:100%}.bmpui-ui-watermark{display:none}.timeline-marker{font-family:var(--bs-font-monospace)}.bmpui-ui-settings-panel{background:var(--dark-bg-alpha-95)!important;backdrop-filter:var(--backdrop-blur-strong);-webkit-backdrop-filter:var(--backdrop-blur-strong);border:1px solid var(--white-alpha-10);border-radius:16px!important;box-shadow:var(--shadow-popup);min-width:280px;max-width:320px}.bmpui-ui-settings-panel>.bmpui-container-wrapper{padding:.75rem!important;margin:0!important}.bmpui-ui-settings-panel-item{padding:.625rem .75rem!important;margin:0!important;border-radius:10px;transition:background-color .15s ease}.bmpui-ui-settings-panel-item:hover{background:var(--white-alpha-06)}.bmpui-ui-settings-panel-item .bmpui-ui-label{font-family:Pretendard,system-ui,-apple-system,sans-serif;font-size:.875rem;font-weight:500;color:var(--white-alpha-70);margin-bottom:.25rem}.bmpui-ui-settings-panel .bmpui-ui-selectbox{font-family:Pretendard,system-ui,-apple-system,sans-serif;font-size:.9375rem;font-weight:500;color:#fff;background:transparent;border:none;padding:0 20px 0 0;cursor:pointer;appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12' fill='none'%3E%3Cpath d='M2.5 4.5L6 8L9.5 4.5' stroke='%23ffffff' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right center}.bmpui-ui-settings-panel .bmpui-ui-selectbox:focus{outline:none}.bmpui-ui-settings-panel .bmpui-ui-selectbox option{background:#1d1d1f;color:#fff;padding:.5rem}.bmpui-ui-settings-panel-item+.bmpui-ui-settings-panel-item{border-top:1px solid var(--white-alpha-06);margin-top:.25rem!important;padding-top:.875rem!important}.bmpui-ui-subtitle-overlay .bmpui-ui-subtitle-label{bottom:20px!important}.bmpui-ui-subtitle-overlay.bmpui-controlbar-visible .bmpui-ui-subtitle-label{bottom:70px!important}.resume-floating-card{position:absolute;top:20px;left:20px;z-index:100;display:flex;align-items:center;gap:0;background:var(--dark-bg-alpha-90);backdrop-filter:var(--backdrop-blur-strong);-webkit-backdrop-filter:var(--backdrop-blur-strong);border:1px solid var(--white-alpha-15);border-radius:14px;box-shadow:var(--shadow-popup);overflow:hidden;animation:resumeCardFadeIn .3s ease-out;opacity:1;transition:opacity .5s ease-out,transform .3s ease-out}.resume-floating-card.fading-out{opacity:0;transform:translateY(-10px)}.resume-floating-card:hover{border-color:var(--white-alpha-25);box-shadow:var(--shadow-popup),0 0 20px rgba(13,110,253,.15)}.resume-floating-card:hover .resume-card-icon{background:var(--bs-primary);transform:scale(1.05)}.resume-floating-card:hover .resume-progress-fill{background:var(--bs-primary)}@keyframes resumeCardFadeIn{0%{opacity:0;transform:translateY(-15px)}to{opacity:1;transform:translateY(0)}}.resume-card-btn{display:flex;align-items:center;gap:12px;padding:12px 16px;background:transparent;border:none;cursor:pointer;transition:background-color .2s ease}.resume-card-btn:hover{background:var(--white-alpha-06)}.resume-card-btn:focus{outline:none}.resume-card-icon{display:flex;align-items:center;justify-content:center;width:40px;height:40px;background:rgba(13,110,253,.8);border-radius:50%;color:#fff;font-size:1.25rem;transition:background-color .2s ease,transform .2s ease}.resume-card-icon i{margin-left:2px}.resume-card-content{display:flex;flex-direction:column;align-items:flex-start;gap:2px}.resume-card-title{font-size:.9375rem;font-weight:600;color:#fff;line-height:1.2}.resume-card-time{font-size:.8125rem;font-weight:500;color:var(--white-alpha-60);font-family:var(--bs-font-monospace);line-height:1.2}.resume-progress-bar{position:absolute;bottom:0;left:0;right:0;height:3px;background:var(--white-alpha-10)}.resume-progress-fill{height:100%;background:rgba(13,110,253,.6);border-radius:0 3px 3px 0;transition:width .3s ease,background-color .2s ease}.resume-card-close{display:flex;align-items:center;justify-content:center;width:32px;height:100%;min-height:64px;background:transparent;border:none;border-left:1px solid var(--white-alpha-10);color:var(--white-alpha-50);font-size:1.125rem;cursor:pointer;transition:background-color .2s ease,color .2s ease}.resume-card-close:hover{background:var(--white-alpha-06);color:var(--white-alpha-80)}.resume-card-close:focus{outline:none}@media(max-width:576px){.resume-floating-card{top:12px;left:12px;right:12px;border-radius:12px}.resume-card-btn{flex:1;padding:10px 14px;gap:10px}.resume-card-icon{width:36px;height:36px;font-size:1.125rem}.resume-card-title{font-size:.875rem}.resume-card-time{font-size:.75rem}.resume-card-close{width:40px;min-height:56px}}:root{--sidebar-width: 260px;--header-height: 60px;--sidebar-bg: #ffffff;--sidebar-border: #e5e7eb;--sidebar-text: #374151;--sidebar-text-muted: #6b7280;--sidebar-hover-bg: #f3f4f6;--sidebar-active-bg: #eff6ff;--sidebar-active-text: #2563eb;--sidebar-section-text: #9ca3af}[data-bs-theme=dark]{--sidebar-bg: #1f2937;--sidebar-border: #374151;--sidebar-text: #e5e7eb;--sidebar-text-muted: #9ca3af;--sidebar-hover-bg: #374151;--sidebar-active-bg: #1e3a5f;--sidebar-active-text: #60a5fa;--sidebar-section-text: #6b7280}.layout-vertical{display:flex;min-height:100vh}.sidebar{position:fixed;top:0;left:0;width:var(--sidebar-width);height:100vh;background:var(--sidebar-bg);border-right:1px solid var(--sidebar-border);display:flex;flex-direction:column;z-index:1030;transition:all .3s ease;overflow:hidden}.sidebar-brand{padding:1.25rem 1.5rem;border-bottom:1px solid var(--sidebar-border);flex-shrink:0}.sidebar-brand-link{text-decoration:none;display:flex;align-items:center;gap:.75rem}.sidebar-brand-text{font-size:1.375rem;font-weight:700;margin:0;background:linear-gradient(135deg,#2563eb,#7c3aed);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.sidebar-nav{flex:1;overflow-y:auto;overflow-x:hidden;padding:1rem 0}.sidebar-nav::-webkit-scrollbar{width:4px}.sidebar-nav::-webkit-scrollbar-track{background:transparent}.sidebar-nav::-webkit-scrollbar-thumb{background:var(--sidebar-border);border-radius:2px}.sidebar-nav::-webkit-scrollbar-thumb:hover{background:var(--sidebar-text-muted)}.sidebar-section-header{padding:.75rem 1.5rem .5rem;font-size:.6875rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--sidebar-section-text);margin:.5rem 0 0}.sidebar-section-header:first-child{margin-top:0}.sidebar-menu{list-style:none;padding:0;margin:0 0 .5rem}.sidebar-menu-item{margin:2px .75rem}.sidebar-menu-link{display:flex;align-items:center;gap:.75rem;padding:.625rem .75rem;color:var(--sidebar-text);text-decoration:none;font-size:.875rem;font-weight:500;border-radius:8px;cursor:pointer;transition:all .15s ease;list-style:none}.sidebar-menu-link::-webkit-details-marker{display:none}.sidebar-menu-link:hover{background:var(--sidebar-hover-bg);color:var(--sidebar-active-text)}.sidebar-menu-icon{font-size:1.125rem;width:1.5rem;text-align:center;flex-shrink:0;opacity:.8}.sidebar-menu-link:hover .sidebar-menu-icon{opacity:1}.sidebar-menu-text{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-menu-arrow{font-size:.75rem;opacity:.5;transition:transform .2s ease;flex-shrink:0}details[open]>.sidebar-menu-link .sidebar-menu-arrow{transform:rotate(180deg)}.sidebar-menu-item:has(.sidebar-sub-link.active)>details>.sidebar-menu-link,.sidebar-menu-link.active{background:var(--sidebar-active-bg);color:var(--sidebar-active-text)}.sidebar-menu-item:has(.sidebar-sub-link.active)>details>.sidebar-menu-link .sidebar-menu-icon,.sidebar-menu-link.active .sidebar-menu-icon{opacity:1}.sidebar-sub-menu{list-style:none;padding:.25rem 0 .5rem;margin:0;overflow:hidden}.sidebar-sub-menu li{margin:1px 0}.sidebar-sub-link{display:flex;align-items:center;padding:.5rem .75rem .5rem 2.75rem;color:var(--sidebar-text-muted);text-decoration:none;font-size:.8125rem;font-weight:400;border-radius:6px;transition:all .15s ease;position:relative}.sidebar-sub-link:before{content:"";position:absolute;left:1.5rem;width:4px;height:4px;background:var(--sidebar-text-muted);border-radius:50%;opacity:.5;transition:all .15s ease}.sidebar-sub-link:hover{color:var(--sidebar-text);background:var(--sidebar-hover-bg)}.sidebar-sub-link:hover:before{opacity:.8}.sidebar-sub-link.active{color:var(--sidebar-active-text);background:var(--sidebar-active-bg);font-weight:500}.sidebar-sub-link.active:before{background:var(--sidebar-active-text);opacity:1;width:6px;height:6px;left:calc(1.5rem - 1px)}.main-content{flex:1;margin-left:var(--sidebar-width);min-height:100vh;display:flex;flex-direction:column;background:var(--bs-tertiary-bg)}.app-header{position:sticky;top:0;background:var(--bs-body-bg);border-bottom:1px solid var(--bs-border-color);padding:.75rem 1.5rem;z-index:1020;display:flex;align-items:center;justify-content:space-between}.app-header .header-left{display:flex;align-items:baseline;gap:1rem}.app-header nav[aria-label=breadcrumb] .breadcrumb{font-size:.8125rem;margin:0;padding:0;background:transparent}.app-header nav[aria-label=breadcrumb] .breadcrumb .breadcrumb-item+.breadcrumb-item:before{color:var(--bs-secondary-color)}.app-header nav[aria-label=breadcrumb] .breadcrumb .breadcrumb-item a{color:var(--bs-secondary-color);text-decoration:none}.app-header nav[aria-label=breadcrumb] .breadcrumb .breadcrumb-item a:hover{color:var(--bs-primary)}.app-header nav[aria-label=breadcrumb] .breadcrumb .breadcrumb-item.active{color:var(--bs-body-color)}.header-title{font-size:1.6rem;font-weight:600;margin:0;color:var(--bs-body-color)}.header-action-btn{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;border:1px solid var(--bs-border-color);background:var(--bs-body-bg);color:var(--bs-body-color);text-decoration:none;transition:all .15s ease}.header-action-btn:hover{background:var(--bs-tertiary-bg);border-color:var(--bs-primary);color:var(--bs-primary)}.header-action-btn i{font-size:1.125rem}.user-dropdown .dropdown-toggle{display:flex;align-items:center;gap:.5rem;padding:.375rem .75rem;border-radius:10px;border:1px solid var(--bs-border-color);background:var(--bs-body-bg);color:var(--bs-body-color);text-decoration:none;font-size:.875rem;font-weight:500;transition:all .15s ease}.user-dropdown .dropdown-toggle:after{display:none}.user-dropdown .dropdown-toggle:hover{background:var(--bs-tertiary-bg);border-color:var(--bs-primary)}.user-dropdown .dropdown-toggle i{font-size:1.125rem}.content-wrapper{flex:1;padding:0}.content-wrapper>.container-fluid{padding:1.5rem}.content-wrapper .card{border:1px solid var(--bs-border-color);border-radius:12px;box-shadow:0 1px 3px rgba(0,0,0,.04);background:var(--bs-body-bg)}.content-wrapper .card-body{padding:1.5rem}@media(max-width:991.98px){.sidebar{display:none}.main-content{margin-left:0}}.theme-switcher{display:flex;justify-content:center;align-items:center;gap:0;padding:4px;background:var(--separator-tertiary);border-radius:100px;width:fit-content;position:relative}.theme-switcher:before{content:"";position:absolute;width:32px;height:32px;background:var(--white);border-radius:50%;box-shadow:var(--shadow-default);transition:transform .3s cubic-bezier(.4,0,.2,1);z-index:1;left:4px;top:4px}.theme-switcher.theme-light:before{transform:translate(0)}.theme-switcher.theme-auto:before{transform:translate(32px)}.theme-switcher.theme-dark:before{transform:translate(64px)}.theme-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border:none;background:transparent;color:var(--label-quaternary);cursor:pointer;transition:color .3s ease;font-size:.875rem;padding:0;position:relative;z-index:2}.theme-btn:hover,.theme-btn.active{color:var(--color-brand-primary)}.theme-btn i{pointer-events:none}[data-bs-theme=dark] .theme-switcher{background:var(--white-alpha-10)}[data-bs-theme=dark] .theme-switcher:before{background:var(--white-alpha-18);box-shadow:var(--shadow-default)}[data-bs-theme=dark] .theme-btn{color:var(--label-secondary)}[data-bs-theme=dark] .theme-btn:hover,[data-bs-theme=dark] .theme-btn.active{color:var(--color-brand-primary)}[data-bs-theme=dark] .sidebar{box-shadow:1px 0 0 var(--sidebar-border)}[data-bs-theme=dark] .sidebar-brand-text{background:linear-gradient(135deg,#60a5fa,#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}[data-bs-theme=dark] .content-wrapper .card{box-shadow:0 1px 3px rgba(0,0,0,.2)}.dashboard-header{margin-bottom:2rem}.dashboard-title{font-size:1.75rem;font-weight:700;margin-bottom:.5rem;color:var(--bs-body-color)}.dashboard-subtitle{color:var(--bs-secondary-color);font-size:.875rem;margin-bottom:0;display:flex;align-items:center;gap:1rem;flex-wrap:wrap}.metric-card{background:var(--bs-body-bg);border:1px solid var(--bs-border-color);border-radius:12px;padding:1.25rem;height:100%;transition:all .2s ease}.metric-card:hover{border-color:var(--bs-primary);box-shadow:0 4px 12px rgba(var(--bs-primary-rgb),.15)}.metric-card-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:.75rem}.metric-card-label{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--bs-secondary-color);margin-bottom:0}.metric-card-icon{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1rem;background:var(--bs-tertiary-bg);color:var(--bs-secondary-color)}.metric-card-icon.primary{background:rgba(var(--bs-primary-rgb),.1);color:var(--bs-primary)}.metric-card-icon.success{background:rgba(var(--bs-success-rgb),.1);color:var(--bs-success)}.metric-card-icon.danger{background:rgba(var(--bs-danger-rgb),.1);color:var(--bs-danger)}.metric-card-icon.warning{background:rgba(var(--bs-warning-rgb),.1);color:var(--bs-warning)}.metric-card-icon.info{background:rgba(var(--bs-info-rgb),.1);color:var(--bs-info)}.metric-card-value{font-size:1.5rem;font-weight:700;color:var(--bs-body-color);line-height:1.2;margin-bottom:0}.metric-card-value small{font-size:.875rem;font-weight:500;color:var(--bs-secondary-color)}.metric-card-footer{margin-top:.75rem;padding-top:.75rem;border-top:1px solid var(--bs-border-color)}.metric-card-trend{font-size:.75rem;display:flex;align-items:center;gap:.25rem}.metric-card-trend.up{color:var(--bs-success)}.metric-card-trend.down{color:var(--bs-danger)}.section-header{display:flex;align-items:center;gap:.5rem;margin-bottom:1.25rem}.section-header h3{font-size:1.125rem;font-weight:600;margin-bottom:0;color:var(--bs-body-color)}.section-header i{color:var(--bs-primary)}.activity-card{background:var(--bs-body-bg);border:1px solid var(--bs-border-color);border-radius:12px;overflow:hidden;height:100%;display:flex;flex-direction:column}.activity-card-header{padding:1rem 1.25rem;border-bottom:1px solid var(--bs-border-color);background:var(--bs-tertiary-bg)}.activity-card-header-content{display:flex;justify-content:space-between;align-items:center}.activity-card-title{display:flex;align-items:center;gap:.5rem}.activity-card-title h5{font-size:.9375rem;font-weight:600;margin-bottom:0}.activity-card-title i{font-size:1rem}.activity-card-body{flex:1;padding:0}.activity-card-footer{padding:.75rem 1.25rem;border-top:1px solid var(--bs-border-color);background:var(--bs-tertiary-bg);text-align:center}.activity-table{margin-bottom:0}.activity-table th{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--bs-secondary-color);border-bottom-width:1px;padding:.75rem 1rem;background:var(--bs-tertiary-bg)}.activity-table td{padding:.75rem 1rem;vertical-align:middle;font-size:.875rem;border-bottom:1px solid var(--bs-border-color)}.activity-table tbody tr:last-child td{border-bottom:none}.activity-table tbody tr:hover{background:var(--bs-tertiary-bg)}.chart-card{background:var(--bs-body-bg);border:1px solid var(--bs-border-color);border-radius:12px;overflow:hidden}.chart-card-header{padding:1rem 1.25rem;border-bottom:1px solid var(--bs-border-color);display:flex;justify-content:space-between;align-items:center}.chart-card-title{font-size:.9375rem;font-weight:600;margin-bottom:0}.chart-card-body{padding:1.25rem}.quick-stats{display:flex;gap:.5rem;flex-wrap:wrap}.quick-stat{display:inline-flex;align-items:center;gap:.375rem;padding:.25rem .625rem;background:var(--bs-tertiary-bg);border-radius:6px;font-size:.75rem;font-weight:500}.quick-stat-value{font-weight:700}.status-dot{width:8px;height:8px;border-radius:50%;display:inline-block}.status-dot.online{background:var(--bs-success);box-shadow:0 0 0 3px rgba(var(--bs-success-rgb),.2)}.status-dot.offline{background:var(--bs-secondary)}.status-dot.warning{background:var(--bs-warning);box-shadow:0 0 0 3px rgba(var(--bs-warning-rgb),.2)}[data-theme=dark] .metric-card,[data-theme=dark] .activity-card,[data-theme=dark] .chart-card{background:var(--bs-body-bg);border-color:var(--bs-border-color)}[data-theme=dark] .metric-card:hover{box-shadow:0 4px 12px rgba(0,0,0,.3)}[data-theme=dark] .activity-card-header,[data-theme=dark] .activity-card-footer,[data-theme=dark] .activity-table th{background:rgba(255,255,255,.03)}