:root{--dd-accent: #B5632A;--dd-accent-hover: #9A5223;--dd-accent-muted: rgba(181, 99, 42, .2);--dd-accent-subtle: rgba(181, 99, 42, .06);--dd-accent-2: #8B4B1E;--dd-surface-0: #F9F8F5;--dd-surface-1: #FFFFFF;--dd-surface-2: #F5F4F0;--dd-surface-3: #ECEAE4;--dd-border: rgba(0, 0, 0, .09);--dd-border-light: rgba(0, 0, 0, .05);--dd-border-hover: rgba(0, 0, 0, .18);--dd-text: #111111;--dd-text-secondary: #4A4A52;--dd-text-tertiary: #7A7A85;--dd-success: #059669;--dd-success-light: #ecfdf5;--dd-warning: #d97706;--dd-warning-light: #fffbeb;--dd-danger: #dc2626;--dd-danger-light: #fef2f2;--dd-radius: 4px;--dd-radius-lg: 6px;--dd-radius-full: 9999px;--dd-shadow-card: 0 1px 3px rgba(0, 0, 0, .05);--dd-shadow-card-hover: none;--dd-shadow-elevated: 0 8px 30px rgba(0, 0, 0, .08);--dd-transition: .2s ease;--dd-transition-slow: .3s ease;--dd-font-sans: "Inter", system-ui, -apple-system, sans-serif;--dd-font-serif: "Lora", Georgia, "Times New Roman", serif;--dd-primary: #4A85C4;--dd-accent-coral: #4A85C4;--dd-bg: var(--dd-surface-0);--dd-surface: #FFFDF2;--dd-text-muted: #4A4A4A;--dd-rule: rgba(0,0,0,.1);--dd-label: var(--dd-accent-coral);--dd-product-courses: #B5632A;--dd-product-courses-2: #8B4B1E;--dd-product-membership: #2D8A6E;--dd-product-ai: var(--dd-accent-coral);--dd-product-coaching: #8B6914;--dd-product-medical: #5B21B6;--dd-success-rgb: 46, 204, 113;--dd-danger-rgb: 231, 76, 60;--dd-fs-xs: 11px;--dd-fs-sm: 13px;--dd-fs-md: 16px;--dd-fs-lg: 18px;--dd-fs-xl: 22px;--dd-fs-section-title: clamp(24px, 2.8vw, 40px);--dd-fs-card-text: clamp(16px, 1.6vw, 20px);--dd-lh-tight: 1.2;--dd-lh-normal: 1.6;--dd-lh-loose: 1.7;--dd-space-xs: .25rem;--dd-space-sm: .5rem;--dd-space-md: 1rem;--dd-space-lg: 1.5rem;--dd-space-xl: 3rem;--dd-space-xxl: 5rem;--dd-space-3xl: 7.5rem;--dd-radius-sm: 3px;--dd-radius-md: 6px;--dd-radius-lms-lg: 8px;--dd-radius-xl: 12px;--dd-elevation-1: 0 1px 3px rgba(0,0,0,.04);--dd-elevation-2: 0 4px 16px rgba(0,0,0,.06);--dd-elevation-3: 0 12px 40px rgba(0,0,0,.1);--dd-transition-fast: .15s ease;--dd-transition-base: .3s ease;--dd-transition-lms-slow: .5s ease;--dd-student-1: #B5632A;--dd-student-2: #3bb292;--dd-student-3: #e97743;--dd-student-4: #4285f4;--dd-student-5: #db4477;--dd-student-6: #8B6914;--dd-width-narrow: 32.5rem;--dd-width-standard: 51.25rem;--dd-width-wide: 75rem;--dd-width-page: 75rem;--accent: var(--dd-accent);--accent-2: var(--dd-accent-2);--accent-hover: var(--dd-accent-hover);--accent-muted: var(--dd-accent-muted);--accent-subtle: var(--dd-accent-subtle);--accent-rgb: 181, 99, 42;--dd-overlay: rgba(0, 0, 0, .5);color-scheme:light}.dark{--dd-header-bg: #2c2c2a;--dd-surface-0: #141413;--dd-surface-1: #1a1a19;--dd-surface-2: #222221;--dd-surface-3: #2c2c2a;--dd-border: rgba(255, 255, 255, .09);--dd-border-light: rgba(255, 255, 255, .04);--dd-border-hover: rgba(255, 255, 255, .18);--dd-text: #E8E7E2;--dd-text-secondary: #A0A098;--dd-text-tertiary: #6C6C65;--dd-accent: #C87A3F;--dd-accent-hover: #B56A2F;--dd-accent-muted: rgba(200, 122, 63, .25);--dd-accent-subtle: rgba(200, 122, 63, .08);--accent-rgb: 200, 122, 63;--dd-overlay: rgba(0, 0, 0, .7);--dd-success-light: rgba(5, 150, 105, .12);--dd-warning-light: rgba(217, 119, 6, .12);--dd-danger-light: rgba(220, 38, 38, .12);--dd-shadow-card: 0 1px 3px rgba(0, 0, 0, .2);--dd-shadow-elevated: 0 8px 30px rgba(0, 0, 0, .3);--dd-bg: var(--dd-surface-0);--dd-surface: var(--dd-surface-1);--dd-text-muted: var(--dd-text-secondary);--dd-rule: rgba(255, 255, 255, .08);scrollbar-color:rgba(255,255,255,.1) transparent;color-scheme:dark}.dd-video-room{--dd-vr-bg: #0a0a0f;--dd-vr-surface: #12121a;--dd-vr-surface-2: #1a1a24;--dd-vr-surface-3: #22222e;--dd-vr-text: #fff;--dd-vr-text-dim: rgba(255,255,255,.6);--dd-vr-text-muted: rgba(255,255,255,.4);--dd-vr-text-faint: rgba(255,255,255,.3);--dd-vr-border: rgba(255,255,255,.1);--dd-vr-border-subtle: rgba(255,255,255,.05);--dd-vr-glass: rgba(255,255,255,.05);--dd-vr-glass-hover: rgba(255,255,255,.1);--dd-vr-status-live: #22c55e;--dd-vr-status-warn: #facc15;--dd-vr-status-warn-bg: rgba(234,179,8,.1);--dd-vr-status-error: #ef4444;--dd-vr-status-error-soft: #f87171;--dd-vr-status-error-bg: rgba(239,68,68,.2);--dd-vr-hangup: #dc2626;background:var(--dd-vr-bg);color:var(--dd-vr-text)}*,*:before,*:after{box-sizing:border-box;margin:0}body{font-family:var(--dd-font-sans);background:var(--dd-surface-0);color:var(--dd-text);font-size:16px;line-height:1.6;letter-spacing:-.01em;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color .2s ease,color .2s ease}::-moz-selection{background:var(--dd-accent-muted)}::selection{background:var(--dd-accent-muted)}a{color:inherit;text-decoration:none}:focus-visible{outline:2px solid var(--dd-accent);outline-offset:2px;border-radius:2px}:focus:not(:focus-visible){outline:none}.dd-skip-link{position:absolute;top:-100%;left:1rem;padding:.5rem 1rem;background:var(--dd-text);color:var(--dd-surface-1);z-index:10000;border-radius:var(--dd-radius);font-weight:500;font-size:14px;letter-spacing:.02em}.dd-skip-link:focus{top:.5rem}button{font:inherit;color:inherit;border:none;background:none;cursor:pointer}img,svg{display:block;max-width:100%}ul,ol{list-style:none;padding:0}input,textarea,select{font:inherit;color:inherit}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#00000014;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#00000026}h1,h2,h3,.dd-heading{font-family:var(--dd-font-serif);letter-spacing:-.025em;line-height:1.15;color:var(--dd-text)}h1{font-size:clamp(1.75rem,3vw,2.75rem);font-weight:500}h2{font-size:clamp(1.25rem,2vw,1.75rem);font-weight:500}h3{font-size:1.125rem;font-weight:500}.dd-display{font-family:var(--dd-font-serif);font-size:clamp(2.5rem,5vw,4.5rem);font-weight:500;line-height:1.05;letter-spacing:-.035em}.dd-headline{font-family:var(--dd-font-serif);font-size:clamp(1.75rem,3vw,2.75rem);font-weight:500;line-height:1.12;letter-spacing:-.025em}.dd-title{font-family:var(--dd-font-serif);font-size:clamp(1.25rem,2vw,1.75rem);font-weight:500;line-height:1.2;letter-spacing:-.02em}.dd-subtitle{font-family:var(--dd-font-serif);font-size:1.125rem;font-weight:500;line-height:1.25;letter-spacing:-.01em}.dd-body{font-size:16px;line-height:1.65;color:var(--dd-text)}.dd-body-sm{font-size:14px;line-height:1.55}.dd-body-xs{font-size:13px;line-height:1.5}.dd-caption{font-size:12px;line-height:1.4;color:var(--dd-text-tertiary)}.dd-overline{font-family:var(--dd-font-sans);font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--dd-accent)}.dd-text-secondary{color:var(--dd-text-secondary)}.dd-text-tertiary{color:var(--dd-text-tertiary)}.dd-text-accent{color:var(--dd-accent)}.dd-text-success{color:var(--dd-success)}.dd-text-warning{color:var(--dd-warning)}.dd-text-danger{color:var(--dd-danger)}.dd-serif{font-family:var(--dd-font-serif)}.dd-mono{font-variant-numeric:tabular-nums}.dd-bold{font-weight:600}.dd-medium{font-weight:500}.dd-center{text-align:center}.dd-right{text-align:right}.dd-clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.dd-relaxed{line-height:1.7}.dd-nowrap{white-space:nowrap}.dd-page{max-width:var(--dd-width-page);margin-inline:auto;padding:4rem 1.5rem}.dd-page--narrow{max-width:var(--dd-width-standard)}.dd-page--form{max-width:24rem}.dd-page--wide{max-width:var(--dd-width-wide)}.dd-page__header{margin-bottom:3rem}.dd-page__header .dd-overline{margin-bottom:.75rem}.dd-page__header h1{margin:0}.dd-flex{display:flex}.dd-inline-flex{display:inline-flex}.dd-col{flex-direction:column}.dd-wrap{flex-wrap:wrap}.dd-center-items{align-items:center}.dd-start-items{align-items:flex-start}.dd-between{justify-content:space-between}.dd-center-justify{justify-content:center}.dd-grow{flex:1}.dd-shrink-0{flex-shrink:0}.dd-gap-1{gap:.25rem}.dd-gap-2{gap:.5rem}.dd-gap-3{gap:.75rem}.dd-gap-4{gap:1rem}.dd-gap-6{gap:1.5rem}.dd-gap-8{gap:2rem}.dd-gap-10{gap:2.5rem}.dd-grid{display:grid;gap:1.5rem}.dd-grid-2{grid-template-columns:repeat(2,1fr)}.dd-grid-3{grid-template-columns:repeat(3,1fr)}.dd-grid-sidebar{grid-template-columns:2fr 1fr}@media (max-width: 768px){.dd-grid-2,.dd-grid-3,.dd-grid-sidebar{grid-template-columns:1fr}.dd-col-span-2{grid-column:span 1}}.dd-col-span-2{grid-column:span 2}.dd-card--hero{padding:2.5rem;border-top:3px solid var(--tool-color, var(--dd-accent))}.dd-card--hero .dd-subtitle{font-family:var(--dd-font-serif);font-size:1.375rem;letter-spacing:-.02em}.dd-card--featured{padding:2.25rem;border-top:3px solid var(--tool-color, var(--dd-accent))}.dd-card--featured .dd-subtitle{font-size:1.2rem}.dd-card--lift{transition:border-color var(--dd-transition),box-shadow var(--dd-transition),transform var(--dd-transition)}.dd-card--lift:hover{transform:translateY(-3px);box-shadow:0 6px 20px #0000000f}.dark .dd-card--lift:hover{box-shadow:0 6px 20px #0000004d}.dd-icon-circle{display:flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:12px;background:color-mix(in srgb,var(--tool-color, var(--dd-accent)) 10%,transparent);flex-shrink:0}.dd-card--hero .dd-icon-circle{width:56px;height:56px;border-radius:14px}.dd-card__example{font-family:var(--dd-font-serif);font-size:13px;font-style:italic;color:var(--dd-accent);opacity:.75;line-height:1.5;margin-top:.5rem}.dd-stat{display:flex;align-items:baseline;gap:.375rem}.dd-stat__number{font-family:var(--dd-font-serif);font-weight:500;letter-spacing:-.03em;color:var(--dd-text)}.dd-stat__number--lg{font-size:2rem;line-height:1}.dd-stat__number--md{font-size:1.375rem;line-height:1}.dd-stat__label{font-size:12px;color:var(--dd-text-tertiary);letter-spacing:.02em}.dd-level-line{position:relative;height:3px;background:var(--dd-surface-3);border-radius:2px;margin-top:auto}.dd-level-line__fill{position:absolute;top:0;left:0;height:100%;background:var(--dd-accent);opacity:.35;border-radius:2px;transition:opacity .3s ease}.dd-card--lift:hover .dd-level-line__fill{opacity:.55}.dd-stagger{opacity:0;animation:dd-fade-up .5s cubic-bezier(.16,1,.3,1) forwards}.dd-stagger-1{animation-delay:0ms}.dd-stagger-2{animation-delay:80ms}.dd-stagger-3{animation-delay:.16s}.dd-stagger-4{animation-delay:.24s}.dd-stagger-5{animation-delay:.32s}.dd-stagger-6{animation-delay:.4s}.dd-stagger-7{animation-delay:.48s}.dd-stagger-8{animation-delay:.56s}.dd-mt-1{margin-top:.25rem}.dd-mt-2{margin-top:.5rem}.dd-mt-3{margin-top:.75rem}.dd-mt-4{margin-top:1rem}.dd-mt-6{margin-top:1.5rem}.dd-mt-8{margin-top:2rem}.dd-mt-10{margin-top:2.5rem}.dd-mb-1{margin-bottom:.25rem}.dd-mb-2{margin-bottom:.5rem}.dd-mb-3{margin-bottom:.75rem}.dd-mb-4{margin-bottom:1rem}.dd-mb-6{margin-bottom:1.5rem}.dd-mb-8{margin-bottom:2rem}.dd-mb-10{margin-bottom:2.5rem}.dd-p-5{padding:1.25rem}.dd-w-full{width:100%}.dd-stack-1>*+*{margin-top:.25rem}.dd-stack-2>*+*{margin-top:.5rem}.dd-stack-3>*+*{margin-top:.75rem}.dd-stack-4>*+*{margin-top:1rem}.dd-stack-6>*+*{margin-top:1.5rem}.dd-stack-8>*+*{margin-top:2rem}.dd-divider{border:none;height:1px;background:var(--dd-border);margin:2rem 0}.dd-divider--editorial{height:1px;background:var(--dd-text);margin:3rem 0;opacity:.15}.dd-separator{width:1px;align-self:stretch;background:var(--dd-border)}.dd-btn{display:inline-flex;align-items:center;justify-content:center;font-weight:500;border-radius:var(--dd-radius);transition:all var(--dd-transition);cursor:pointer;white-space:nowrap;letter-spacing:.01em}.dd-btn:disabled{opacity:.35;cursor:not-allowed}.dd-btn--primary{background:var(--dd-text);color:var(--dd-surface-1)}.dd-btn--primary:hover:not(:disabled){background:var(--dd-surface-3)}.dd-btn--secondary{background:var(--dd-surface-1);color:var(--dd-text);border:1px solid var(--dd-border-hover)}.dd-btn--secondary:hover:not(:disabled){background:var(--dd-surface-2);border-color:var(--dd-text)}.dd-btn--ghost{background:transparent;color:var(--dd-text-secondary)}.dd-btn--ghost:hover:not(:disabled){color:var(--dd-text)}.dd-btn--danger{background:var(--dd-danger);color:#fff}.dd-btn--danger:hover:not(:disabled){background:#b91c1c}.dd-btn--accent{background:var(--dd-accent);color:#fff}.dd-btn--accent:hover:not(:disabled){background:var(--dd-accent-hover)}.dd-btn--sm{padding:.375rem .875rem;font-size:13px}.dd-btn--md{padding:.625rem 1.25rem;font-size:14px}.dd-btn--lg{padding:.75rem 1.75rem;font-size:15px}.dd-card{background:var(--dd-surface-1);border:1px solid var(--dd-border);border-radius:var(--dd-radius-lg);padding:1.75rem;box-shadow:var(--dd-shadow-card)}.dd-card--hover{transition:border-color var(--dd-transition);cursor:pointer}.dd-card--hover:hover{border-color:var(--dd-border-hover)}.dd-card--accent-top{border-top:3px solid var(--dd-accent)}.dd-badge{display:inline-flex;align-items:center;padding:.125rem .5rem;border-radius:3px;font-size:11px;font-weight:600;letter-spacing:.04em;text-transform:uppercase}.dd-badge--default{background:var(--dd-accent-subtle);color:var(--dd-accent)}.dd-badge--success{background:var(--dd-success-light);color:var(--dd-success)}.dd-badge--warning{background:var(--dd-warning-light);color:var(--dd-warning)}.dd-badge--danger{background:var(--dd-danger-light);color:var(--dd-danger)}.dd-input{width:100%;padding:.625rem .875rem;background:var(--dd-surface-1);border:1px solid var(--dd-border);border-radius:var(--dd-radius);font-size:14px;color:var(--dd-text);transition:border-color var(--dd-transition)}.dd-input::-moz-placeholder{color:var(--dd-text-tertiary)}.dd-input::placeholder{color:var(--dd-text-tertiary)}.dd-input:focus{outline:none;border-color:var(--dd-text)}.dd-input--error{border-color:var(--dd-danger)}.dd-label{display:block;font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--dd-text-secondary);margin-bottom:.375rem}.dd-select{width:100%;padding:.625rem .875rem;background:var(--dd-surface-1);border:1px solid var(--dd-border);border-radius:var(--dd-radius);font-size:14px;color:var(--dd-text);cursor:pointer}.dd-textarea{width:100%;padding:.625rem .875rem;background:var(--dd-surface-1);border:1px solid var(--dd-border);border-radius:var(--dd-radius);font-size:14px;color:var(--dd-text);resize:vertical;min-height:80px;transition:border-color var(--dd-transition)}.dd-textarea:focus,.dd-select:focus{outline:none;border-color:var(--dd-text)}.dd-form-group{margin-bottom:0}.dd-form-error{font-size:13px;color:var(--dd-danger);margin-top:.25rem}.dd-checkbox{display:flex;align-items:center;gap:.5rem;font-size:14px;cursor:pointer}.dd-modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--dd-overlay);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:100;display:flex;align-items:center;justify-content:center}.dd-modal{background:var(--dd-surface-1);border:1px solid var(--dd-border);border-radius:var(--dd-radius-lg);padding:2rem;box-shadow:var(--dd-shadow-elevated);max-width:480px;width:90%;max-height:85vh;overflow-y:auto}.dd-modal__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem}.dd-header{position:sticky;top:0;z-index:50;background:var(--dd-header-bg, var(--dd-surface-3));border-bottom:1px solid var(--dd-border)}.dd-header__inner{max-width:var(--dd-width-page);margin-inline:auto;padding:0 1.5rem;height:3.75rem;display:flex;align-items:center;justify-content:space-between}.dd-header__logo{display:flex;align-items:center;gap:.375rem}.dd-header__logo-name{font-family:var(--dd-font-serif);font-size:1.25rem;font-weight:500;letter-spacing:-.02em;color:var(--dd-text)}.dd-header__logo:hover .dd-header__logo-name{color:var(--dd-accent)}.dd-header__logo-suffix{font-size:13px;color:var(--dd-text-tertiary);font-weight:400;letter-spacing:.01em}.dd-header__nav{display:flex;align-items:center;gap:.125rem}.dd-header__link{position:relative;padding:.375rem .625rem;font-size:13px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--dd-text-secondary);transition:color var(--dd-transition)}.dd-header__link:after{content:"";position:absolute;bottom:0;left:50%;width:0;height:1.5px;background:var(--dd-text);transform:translate(-50%);transition:width .3s ease;pointer-events:none}.dd-header__link:hover{color:var(--dd-text)}.dd-header__link:hover:after{width:50%}.dd-header__link--current,.dd-header__link--current:hover{color:var(--dd-accent)}.dd-header__link--current:after,.dd-header__link--current:hover:after{width:100%;background:var(--dd-accent)}.dd-header__link--accent{color:var(--dd-accent)}.dd-header__link--accent:hover{color:var(--dd-accent-hover)}.dd-header__separator{width:1px;height:1.25rem;background:var(--dd-border);margin:0 .5rem}.dd-header__user{font-size:12px;font-weight:500;letter-spacing:.02em;color:var(--dd-text-tertiary)}.dd-header__hamburger{display:none;flex-direction:column;gap:4px;padding:.5rem;cursor:pointer;background:none}.dd-hamburger-line{display:block;width:18px;height:1.5px;background:var(--dd-text);transition:transform .2s,opacity .2s}.dd-hamburger-line--open:nth-child(1){transform:translateY(5.5px) rotate(45deg)}.dd-hamburger-line--open:nth-child(2){opacity:0}.dd-hamburger-line--open:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}@media (max-width: 768px){.dd-header__hamburger{display:flex}.dd-header__nav{display:none;position:absolute;top:3.75rem;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;padding:.75rem 1.5rem 1.25rem;background:var(--dd-surface-1);border-bottom:1px solid var(--dd-border)}.dd-header__nav--open{display:flex}.dd-header__link{padding:.75rem 0;border-bottom:1px solid var(--dd-border)}.dd-header__separator{width:100%;height:1px;margin:.5rem 0}.dd-header__user{padding:.5rem 0}}.dd-footer{border-top:1px solid var(--dd-border);margin-top:auto}.dd-footer__inner{max-width:var(--dd-width-page);margin-inline:auto;padding:3rem 1.5rem}.dd-footer__brand{font-family:var(--dd-font-serif);font-size:1.125rem;font-weight:500;letter-spacing:-.02em}.dd-footer__brand-suffix{font-weight:300;color:var(--dd-text-tertiary)}.dd-footer__tagline{font-size:14px;color:var(--dd-text-tertiary);margin-top:.5rem;max-width:22rem;line-height:1.5}.dd-footer__links-title{font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--dd-text-tertiary);margin-bottom:.75rem}.dd-footer__link{display:block;font-size:14px;color:var(--dd-text-secondary);padding:.25rem 0;transition:color var(--dd-transition)}.dd-footer__link:hover{color:var(--dd-text)}.dd-footer__copyright{font-size:12px;color:var(--dd-text-tertiary)}.dd-trust-bar{border-top:1px solid var(--dd-border);border-bottom:1px solid var(--dd-border)}.dd-trust-bar__inner{max-width:var(--dd-width-standard);margin-inline:auto;padding:2rem 1.5rem;display:flex;align-items:center;justify-content:center;gap:4rem;flex-wrap:wrap}.dd-trust-item{text-align:center}.dd-trust-item__number{font-family:var(--dd-font-serif);font-size:1.75rem;font-weight:500;letter-spacing:-.02em}.dd-trust-item__label{font-size:11px;font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--dd-text-tertiary);margin-top:.25rem}.dd-feature{background:var(--dd-surface-1);border:1px solid var(--dd-border);border-top:3px solid var(--dd-accent);border-radius:var(--dd-radius-lg);padding:2rem}.dd-feature__number{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--dd-accent);font-weight:600}.dd-feature__title{font-family:var(--dd-font-serif);font-size:1.25rem;font-weight:500;margin-top:.75rem;margin-bottom:.75rem}.dd-feature__desc{font-size:14px;color:var(--dd-text-secondary);line-height:1.65}.dd-tag{padding:.375rem .75rem;border-radius:var(--dd-radius);border:1px solid var(--dd-border);font-size:12px;font-weight:500;letter-spacing:.02em;color:var(--dd-text-secondary);background:var(--dd-surface-1)}.dd-section{max-width:var(--dd-width-standard);margin-inline:auto;padding:5rem 1.5rem}.dd-section--bordered{border-top:1px solid var(--dd-border);border-bottom:1px solid var(--dd-border);background:var(--dd-surface-2)}.dd-progress{width:100%;height:4px;background:var(--dd-surface-3);border-radius:2px;overflow:hidden}.dd-progress--thin{height:2px}.dd-progress__fill{height:100%;background:var(--dd-accent);border-radius:2px;transition:width .7s ease-out}.dd-stat__label{font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--dd-text-tertiary)}.dd-stat__value{font-family:var(--dd-font-serif);font-size:2.5rem;font-weight:500;letter-spacing:-.02em;color:var(--dd-text)}.dd-stat__unit{font-size:13px;color:var(--dd-text-tertiary);margin-top:.125rem}.dd-dot{width:.5rem;height:.5rem;border-radius:50%;flex-shrink:0}.dd-dot--live{background:#10b981;animation:dd-pulse 2s ease-in-out infinite}.dd-dot--accent{background:var(--dd-accent)}@keyframes dd-pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.85)}}.dd-table-wrap{background:var(--dd-surface-1);border:1px solid var(--dd-border);border-radius:var(--dd-radius-lg);overflow:hidden}.dd-table{width:100%;font-size:14px;border-collapse:collapse}.dd-table th{text-align:left;padding:.75rem 1rem;font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--dd-text-tertiary);background:var(--dd-surface-2)}.dd-table th:last-child{text-align:right}.dd-table td{padding:.75rem 1rem;border-top:1px solid var(--dd-border)}.dd-table td:last-child{text-align:right}.dd-table tr:hover td{background:var(--dd-surface-2)}.dd-tabs{display:flex;gap:0;border-bottom:1px solid var(--dd-border);width:-moz-fit-content;width:fit-content}.dd-tab{position:relative;padding:.625rem 1rem;font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--dd-text-tertiary);background:var(--dd-surface-1);transition:color var(--dd-transition),background var(--dd-transition);border-bottom:2px solid transparent;margin-bottom:-1px}.dd-tab:after{content:"";position:absolute;bottom:-2px;left:50%;width:0;height:1.5px;background:var(--dd-text);transform:translate(-50%);transition:width .3s ease;pointer-events:none}.dd-tab:not(.dd-tab--active):hover:after{width:50%}.dd-tab--active{color:var(--dd-accent);border-bottom-color:transparent;background:var(--dd-accent-muted)}.dd-tab--active:after{width:100%;background:var(--dd-accent)}.dd-tab:not(.dd-tab--active):hover{color:var(--dd-text-secondary)}.dd-banner{padding:1.25rem;border-radius:var(--dd-radius-lg);display:flex;align-items:center;justify-content:space-between;gap:1rem}.dd-banner--accent{background:var(--dd-accent-subtle);border:1px solid rgba(181,99,42,.12)}.dd-banner--success{background:var(--dd-success-light);border:1px solid #d1fae5}.dd-progress-ring{position:relative;width:3.5rem;height:3.5rem;flex-shrink:0}.dd-progress-ring svg{width:100%;height:100%;transform:rotate(-90deg)}.dd-progress-ring__track{fill:none;stroke:var(--dd-surface-3);stroke-width:3}.dd-progress-ring__fill{fill:none;stroke:var(--dd-accent);stroke-width:3;stroke-linecap:round;stroke-dasharray:125.66;stroke-dashoffset:calc(125.66 * (1 - var(--progress, 0) / 100));transition:stroke-dashoffset .7s ease-out}.dd-progress-ring__label{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:600;color:var(--dd-accent);font-variant-numeric:tabular-nums}.dd-cal{padding:.5rem 0}.dd-cal-month{font-family:var(--dd-font-serif);font-size:clamp(1.5rem,2.5vw,2rem);font-weight:500;line-height:1.15;letter-spacing:-.025em;color:var(--dd-text)}.dd-cal-year{font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--dd-text-tertiary);margin-top:.125rem}.dd-cal-nav{display:flex;align-items:center;justify-content:center;width:2.75rem;height:2.75rem;color:var(--dd-text-secondary);transition:color var(--dd-transition);cursor:pointer}.dd-cal-nav:hover:not(:disabled){color:var(--dd-text)}.dd-cal-nav:disabled{opacity:.2;cursor:default}.dd-cal-weekdays{display:grid;grid-template-columns:repeat(7,1fr);border-bottom:1px solid var(--dd-border);margin-bottom:.5rem}.dd-cal-weekday{padding:.75rem 0 .625rem;text-align:center;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--dd-text-tertiary)}.dd-cal-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:2px;transition:opacity var(--dd-transition-slow)}.dd-cal-day{display:flex;flex-direction:column;align-items:center;justify-content:center;aspect-ratio:1;min-height:48px;position:relative;font-size:14px;color:var(--dd-text-tertiary);cursor:default;transition:all var(--dd-transition);border-radius:var(--dd-radius);-webkit-user-select:none;-moz-user-select:none;user-select:none}.dd-cal-day--past{opacity:.2}.dd-cal-day--available{color:var(--dd-text);font-weight:500;cursor:pointer}.dd-cal-day--available:hover{background:var(--dd-surface-2)}.dd-cal-day__number{font-variant-numeric:tabular-nums;line-height:1}.dd-cal-day__mark{display:block;width:12px;height:2px;background:var(--dd-accent);border-radius:1px;margin-top:3px}.dd-cal-day--booked .dd-cal-day__number{outline:1.5px solid var(--dd-accent-muted);outline-offset:4px;border-radius:50%}.dd-cal-day--today .dd-cal-day__number{color:var(--dd-accent);font-weight:600}.dd-cal-day--selected{background:var(--dd-accent);color:#fff;font-weight:600;cursor:pointer}.dd-cal-day--selected .dd-cal-day__number{color:#fff}.dd-cal-day--selected .dd-cal-day__mark{background:#ffffff80}.dd-slot-group{margin-bottom:1.5rem}.dd-slot-group:last-child{margin-bottom:0}.dd-slot-group__label{font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--dd-accent);margin-bottom:.75rem;padding-left:.125rem}.dd-slot-group__list{display:flex;flex-direction:column;gap:2px}.dd-slot{display:flex;align-items:center;justify-content:space-between;width:100%;padding:.75rem 1rem;background:var(--dd-surface-1);border:1px solid var(--dd-border);border-left:3px solid transparent;border-radius:var(--dd-radius);cursor:pointer;transition:all var(--dd-transition)}.dd-slot:hover{border-left-color:var(--dd-accent-muted);background:var(--dd-accent-subtle)}.dd-slot--selected{border-left-color:var(--dd-accent);background:var(--dd-accent-subtle)}.dd-slot__time{font-size:15px;font-weight:500;font-variant-numeric:tabular-nums;color:var(--dd-text)}.dd-slot--selected .dd-slot__time{color:var(--dd-accent);font-weight:600}.dd-slot__duration{font-size:12px;color:var(--dd-text-tertiary);letter-spacing:.02em}.dd-booking-confirm{padding-top:2rem}.dd-booking-confirm__detail{background:var(--dd-surface-2);border-radius:var(--dd-radius);padding:1.25rem 1.5rem;margin-bottom:1.5rem}.dd-booking-balance{font-family:var(--dd-font-serif);font-size:2.5rem;font-weight:500;line-height:1;letter-spacing:-.03em;color:var(--dd-accent)}.dd-grid-sidebar--wide{display:grid;grid-template-columns:2fr 1fr;gap:3rem}@media (max-width: 768px){.dd-grid-sidebar--wide{grid-template-columns:1fr;gap:2rem}.dd-cal-day{min-height:40px;font-size:13px}.dd-slot{padding:.625rem .875rem}.dd-cal-month{font-size:1.375rem}}.dd-stat-card{position:relative;overflow:hidden}.dd-stat-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--dd-accent);opacity:.5}.dd-stat__currency{font-size:1.25rem;margin-left:.125rem;color:var(--dd-text-tertiary);font-weight:400}.dd-stat-icon{width:1.5rem;height:1.5rem;display:flex;align-items:center;justify-content:center;border-radius:var(--dd-radius);background:var(--dd-accent-subtle);color:var(--dd-accent)}.dd-avatar-initials{width:2rem;height:2rem;border-radius:50%;background:var(--dd-accent-subtle);color:var(--dd-accent);font-size:11px;font-weight:600;letter-spacing:.03em;display:flex;align-items:center;justify-content:center;flex-shrink:0}.dd-quick-actions{display:flex;gap:.5rem;flex-wrap:wrap}.dd-quick-action{display:inline-flex;align-items:center;gap:.375rem;padding:.5rem .875rem;background:var(--dd-surface-2);border:1px solid var(--dd-border);border-radius:var(--dd-radius);font-size:13px;font-weight:500;color:var(--dd-text-secondary);transition:all var(--dd-transition);cursor:pointer}.dd-quick-action:hover{border-color:var(--dd-border-hover);color:var(--dd-text);background:var(--dd-surface-1)}.dd-coaching-stats{display:flex;align-items:center;gap:1.5rem;padding:1rem 1.5rem;background:var(--dd-surface-1);border:1px solid var(--dd-border);border-radius:var(--dd-radius-lg)}.dd-coaching-stats__divider{width:1px;align-self:stretch;background:var(--dd-border);flex-shrink:0}.dd-coaching-stat{display:flex;align-items:center;gap:.875rem;flex:1;min-width:0}.dd-coaching-stat__value{font-family:var(--dd-font-serif);font-size:1.75rem;font-weight:500;letter-spacing:-.03em;line-height:1;color:var(--dd-accent);flex-shrink:0}.dd-coaching-stat__value--date{font-family:var(--dd-font-sans);font-size:.9375rem;font-weight:600;letter-spacing:-.01em;color:var(--dd-text);background:var(--dd-surface-2);padding:.375rem .625rem;border-radius:var(--dd-radius);white-space:nowrap}.dd-coaching-stat__value--empty{font-size:1.25rem;color:var(--dd-text-tertiary)}.dd-coaching-stat__detail{display:flex;flex-direction:column;gap:.125rem;min-width:0}.dd-coaching-stat__label{font-size:14px;font-weight:500;color:var(--dd-text);line-height:1.3}.dd-coaching-stat__sub{font-size:12px;line-height:1.3}.dd-coaching-stat__action{background:none;border:none;padding:0;font-size:12px;font-weight:500;color:var(--dd-accent);cursor:pointer;text-align:left;transition:color var(--dd-transition)}.dd-coaching-stat__action:hover{color:var(--dd-accent-hover)}@media (max-width: 600px){.dd-coaching-stats{flex-direction:column;gap:.75rem;padding:1rem 1.25rem}.dd-coaching-stats__divider{width:100%;height:1px;align-self:auto}}.dd-booking-item{display:flex;align-items:flex-start;gap:.75rem;padding:.75rem 0;border-bottom:1px solid var(--dd-border)}.dd-booking-item:last-child{border-bottom:none;padding-bottom:0}.dd-booking-item:first-child{padding-top:0}.dd-booking-item__bar{width:3px;min-height:2rem;border-radius:2px;background:var(--dd-accent-muted);flex-shrink:0;margin-top:2px}.dd-booking-item--today .dd-booking-item__bar{background:var(--dd-accent)}.dd-booking-card{display:flex;align-items:center;gap:1rem;padding:.875rem 1rem;background:var(--dd-surface-1);border:1px solid var(--dd-border);border-left:3px solid var(--dd-accent);border-radius:0 var(--dd-radius) var(--dd-radius) 0;transition:border-color var(--dd-transition)}.dd-booking-card:hover{border-color:var(--dd-border-hover)}.dd-booking-card__time{font-size:14px;font-weight:600;font-variant-numeric:tabular-nums;color:var(--dd-accent);min-width:3.5rem}.dd-booking-card__body{flex:1}.dd-countdown{font-family:var(--dd-font-serif);font-size:1.25rem;font-weight:500;color:var(--dd-accent);letter-spacing:-.02em}.dd-table--relaxed td{padding:1rem}.dd-table--relaxed th{padding:.875rem 1rem}.dd-schedule-row--noon{border-top:1px solid rgba(255,255,255,.08);margin-top:-1px}.dd-schedule-day-header--today{background:var(--dd-accent-subtle);border-bottom:2px solid var(--dd-accent)}.dd-booking-block:hover{transform:translateY(-1px);box-shadow:0 2px 8px #00000014;z-index:5}.dd-form-row{display:flex;gap:.5rem;align-items:flex-end;flex-wrap:wrap}.dd-credit-low .dd-stat__value{color:var(--dd-warning)}@keyframes dd-fade-in{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}@keyframes dd-fade-up{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes dd-popup-in{0%{opacity:0}to{opacity:1}}@keyframes dd-scale-in{0%{opacity:0;transform:scale(.97)}to{opacity:1;transform:scale(1)}}.dd-animate-in{animation:dd-fade-in .2s ease-out}.dd-animate-up{animation:dd-fade-up .3s ease-out}.dd-animate-scale{animation:dd-scale-in .2s ease-out}.dd-hidden{display:none}.dd-block{display:block}.dd-inline{display:inline}.dd-rounded{border-radius:var(--dd-radius)}.dd-rounded-lg{border-radius:var(--dd-radius-lg)}.dd-rounded-full{border-radius:var(--dd-radius-full)}.dd-border{border:1px solid var(--dd-border)}.dd-border-t{border-top:1px solid var(--dd-border)}.dd-border-b{border-bottom:1px solid var(--dd-border)}.dd-bg-0{background:var(--dd-surface-0)}.dd-bg-1{background:var(--dd-surface-1)}.dd-bg-2{background:var(--dd-surface-2)}.dd-bg-accent{background:var(--dd-accent);color:#fff}.dd-shadow{box-shadow:var(--dd-shadow-card)}.dd-shadow-hover{box-shadow:var(--dd-shadow-card-hover)}.dd-transition{transition:all var(--dd-transition)}.dd-pointer{cursor:pointer}.dd-no-select{-webkit-user-select:none;-moz-user-select:none;user-select:none}@media (max-width: 768px){.dd-hide-mobile{display:none!important}}@media (min-width: 769px){.dd-hide-desktop{display:none!important}}.dd-ml-2{margin-left:.5rem}.dd-mr-2{margin-right:.5rem}.dd-pt-4{padding-top:1rem}.dd-context-menu{position:fixed;z-index:50;background:var(--dd-surface-1);border:1px solid var(--dd-border);border-radius:var(--dd-radius);box-shadow:var(--dd-shadow-elevated);padding:.25rem 0;min-width:180px}.dd-context-menu__item{display:block;width:100%;text-align:left;padding:.5rem 1rem;font-size:14px;transition:background var(--dd-transition)}.dd-context-menu__item:hover{background:var(--dd-surface-2)}.dd-context-menu__item--danger{color:var(--dd-danger)}.dd-context-menu__item--danger:hover{background:var(--dd-danger-light)}.dd-action-panel{background:var(--dd-surface-1);border:1px solid var(--dd-border);border-radius:var(--dd-radius-lg);padding:1.25rem}.dd-action-panel--danger{border-color:#dc262633}.dd-action-panel--accent{border-color:#b5632a40}.dd-schedule-grid{display:grid;grid-template-columns:60px repeat(7,1fr)}.dd-schedule-cell{border-left:1px solid rgba(0,0,0,.04);position:relative;transition:background-color 75ms}.dd-schedule-cell--today{background:#ffffff06;border-left:1px solid rgba(181,99,42,.15)}.dd-schedule-cell--blocked{background:#dc26260a}.dd-schedule-cell--selected{background:#b5632a14}.dd-schedule-cell--available{background:#b5632a09;border-left:1px solid rgba(181,99,42,.15)}.dd-schedule-cell--available.dd-schedule-cell--today{background:#b5632a0d}.dd-schedule-cell--avail-edit{cursor:pointer!important}.dd-schedule-cell--avail-edit:hover{background:#b5632a14}.dd-schedule-cell--crosshair{cursor:crosshair}.dd-schedule-hour{font-size:11px;font-weight:500;font-variant-numeric:tabular-nums;color:var(--dd-text-tertiary);padding-left:.5rem}.dd-schedule-row{border-bottom:1px solid rgba(0,0,0,.04);height:4rem}.dd-schedule-header{border-bottom:1px solid var(--dd-border)}.dd-schedule-day-header{padding:.75rem;text-align:center;border-left:1px solid var(--dd-border)}.dd-booking-block{position:absolute;left:0;right:.25rem;border-radius:0 var(--dd-radius) var(--dd-radius) 0;border-left:3px solid currentColor;padding:.375rem .5rem;text-align:left;transition:all .15s;cursor:pointer;overflow:hidden}.dd-now-line{position:absolute;pointer-events:none;z-index:10}.dd-now-dot{position:absolute;left:-.375rem;top:-.375rem;width:.75rem;height:.75rem;border-radius:50%;background:var(--dd-danger)}.dd-now-line-bar{height:2px;background:var(--dd-danger);width:100%}.dd-summary-pill,.dd-summary-pill--accent{display:inline-flex;align-items:center;padding:.5rem 1rem;border-radius:var(--dd-radius);font-size:14px;background:var(--dd-surface-2)}.dd-summary-pill--accent{background:var(--dd-accent-subtle)}.dd-imminent-banner{padding:1rem;background:var(--dd-accent-subtle);border:1px solid rgba(181,99,42,.15);border-radius:var(--dd-radius-lg);display:flex;align-items:center;justify-content:space-between;transition:background var(--dd-transition)}.dd-imminent-banner:hover{background:#b5632a1a}.dd-topic-tag{display:inline-flex;align-items:center;gap:.25rem;padding:.25rem .5rem;background:var(--dd-accent-subtle);color:var(--dd-accent);font-size:11px;font-weight:600;letter-spacing:.03em;text-transform:uppercase;border-radius:var(--dd-radius)}.dd-next-steps{background:var(--dd-accent-subtle);border:1px solid rgba(181,99,42,.12);border-radius:var(--dd-radius);padding:.75rem 1rem}.dd-student-info{background:var(--dd-surface-2);border-radius:var(--dd-radius);padding:.75rem}@keyframes dd-spin{to{transform:rotate(360deg)}}.dd-spinner{animation:dd-spin 1s linear infinite;width:1.25rem;height:1.25rem}.dd-toast-container{position:fixed;bottom:1.5rem;right:1.5rem;z-index:9999;display:flex;flex-direction:column;gap:.5rem;max-width:24rem}.dd-toast{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;border-radius:var(--dd-radius);background:var(--dd-surface-1);border:1px solid var(--dd-border);cursor:pointer;animation:dd-fade-up .25s ease-out;font-size:14px;line-height:1.4}.dd-toast__icon{display:flex;align-items:center;justify-content:center;width:1.5rem;height:1.5rem;border-radius:50%;font-size:.75rem;font-weight:700;flex-shrink:0}.dd-toast--error .dd-toast__icon{background:#dc2626;color:#fff}.dd-toast--success .dd-toast__icon{background:#16a34a;color:#fff}.dd-toast--info .dd-toast__icon{background:var(--dd-accent);color:#fff}.dd-toast__message{flex:1;color:var(--dd-text)}@keyframes dd-fade-up{0%{opacity:0;transform:translateY(.5rem)}to{opacity:1;transform:translateY(0)}}.dd-vh-full{height:100vh}.dd-vh-main{height:calc(100vh - 60px)}.dd-max-w-prose{max-width:var(--dd-width-standard);margin:0 auto}.dd-sticky{position:sticky}.dd-overflow-y-auto{overflow-y:auto}.dd-overflow-hidden{overflow:hidden}.dd-text-left{text-align:left}.dd-text-right{text-align:right}.dd-no-decoration{text-decoration:none}.dd-truncate{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.dd-relative{position:relative}.dd-absolute{position:absolute}.dd-inset-0{top:0;right:0;bottom:0;left:0}.dd-opacity-70{opacity:.7}.dd-cursor-pointer{cursor:pointer}.dd-p-3{padding:.75rem}.dd-p-4{padding:1rem}.dd-p-6{padding:1.5rem}.dd-p-8{padding:2rem}.dd-px-4{padding-left:1rem;padding-right:1rem}.dd-px-6{padding-left:1.5rem;padding-right:1.5rem}.dd-py-3{padding-top:.75rem;padding-bottom:.75rem}.dd-py-6{padding-top:1.5rem;padding-bottom:1.5rem}.dd-pt-6{padding-top:1.5rem}.dd-pb-2{padding-bottom:.5rem}.dd-text-xs{font-size:.75rem}.dd-text-sm{font-size:.875rem}.dd-text-lg{font-size:1.125rem}.dd-text-xl{font-size:1.25rem}.dd-text-2xl{font-size:1.5rem}.dd-w-sidebar{width:20rem}.dd-aspect-video{position:relative;padding-bottom:56.25%}.dd-aspect-video>*{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%}.dd-lms-lesson{overflow:hidden}.dd-lms-sidebar{width:20rem;overflow:hidden;border-right:1px solid var(--dd-border);transition:width .35s cubic-bezier(.4,0,.2,1)}.dd-lms-sidebar--collapsed{width:0}.dd-lms-content{max-width:var(--dd-width-standard);margin:0 auto;padding:2rem 1.5rem}.dd-lms-navbar{display:flex;align-items:center;justify-content:space-between;height:3rem;padding:0 1rem;background:var(--dd-surface-0);border-bottom:1px solid var(--dd-border);flex-shrink:0;z-index:10}.dd-lms-navbar__left{display:flex;align-items:center;gap:.75rem;min-width:0}.dd-lms-navbar__logo{font-family:var(--dd-font-serif);font-size:1rem;font-weight:500;color:var(--dd-text);text-decoration:none;flex-shrink:0}.dd-lms-navbar__sep{width:1px;height:1.25rem;background:var(--dd-border);flex-shrink:0}.dd-lms-navbar__course{font-size:.8125rem;color:var(--dd-text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-decoration:none}.dd-lms-navbar__course:hover{color:var(--dd-text)}.dd-lms-navbar__center{display:flex;align-items:center;gap:.5rem;font-size:.8125rem;color:var(--dd-text-tertiary)}.dd-lms-navbar__right{display:flex;align-items:center;gap:.5rem;flex-shrink:0}.dd-lms-navbar__icon-btn{display:flex;align-items:center;justify-content:center;width:2rem;height:2rem;border-radius:var(--dd-radius);color:var(--dd-text-tertiary);transition:background var(--dd-transition),color var(--dd-transition)}.dd-lms-navbar__icon-btn:hover{background:var(--dd-surface-2);color:var(--dd-text)}.dd-lms-sidebar-toggle{display:flex;align-items:center;justify-content:center;width:1.5rem;flex-shrink:0;background:var(--dd-surface-0);border-right:1px solid var(--dd-border);color:var(--dd-text-tertiary);transition:color var(--dd-transition)}.dd-lms-sidebar-toggle:hover{color:var(--dd-text)}.dd-lms-sidebar-backdrop{display:none}.dd-lms-save-indicator{position:fixed;bottom:1.5rem;left:1.5rem;padding:.375rem .75rem;border-radius:var(--dd-radius);font-size:.8125rem;z-index:50;animation:dd-fade-up .2s ease}.dd-lms-save-indicator--saving{background:var(--dd-surface-2);color:var(--dd-text-secondary)}.dd-lms-save-indicator--saved{background:var(--dd-success-light);color:var(--dd-success)}.dd-lms-save-indicator--error{background:var(--dd-danger-light);color:var(--dd-danger)}.dd-lms-shortcuts{position:fixed;top:3.5rem;right:1rem;background:var(--dd-surface-1);border:1px solid var(--dd-border);border-radius:var(--dd-radius-lg);padding:.75rem 1rem;z-index:50;box-shadow:var(--dd-shadow-elevated);min-width:14rem}.dd-lms-shortcuts dl{display:grid;grid-template-columns:auto 1fr;gap:.25rem .75rem;font-size:.8125rem;margin:0}.dd-lms-shortcuts dt{font-weight:600;font-family:monospace;color:var(--dd-text)}.dd-lms-shortcuts dd{color:var(--dd-text-secondary);margin:0}.dd-lms-complete-flash{animation:dd-complete-pop .4s ease}@keyframes dd-complete-pop{0%{transform:scale(.8);opacity:0}50%{transform:scale(1.1)}to{transform:scale(1);opacity:1}}.dd-lms-advance{display:flex;align-items:center;justify-content:center;gap:1rem;padding:1rem;margin-top:1rem;background:var(--dd-success-light);border:1px solid rgba(5,150,105,.15);border-radius:var(--dd-radius);animation:dd-fade-up .3s ease}.dd-lms-advance--subtle{background:var(--dd-surface-2);border-color:var(--dd-border);animation:none}.dd-lms-player--transitioning{opacity:0;transition:opacity .15s ease}.dd-lms-player--visible{opacity:1;transition:opacity .15s ease}.dd-lms-lesson-last{font-size:10px;color:var(--dd-text-tertiary);margin-left:1.75rem}@media (max-width: 768px){.dd-lms-lesson .dd-lms-sidebar{position:fixed;top:0;left:0;height:100vh;z-index:100;background:var(--dd-surface-1);box-shadow:var(--dd-shadow-elevated)}.dd-lms-lesson .dd-lms-sidebar--collapsed{width:0;box-shadow:none}.dd-sidebar-open .dd-lms-sidebar-backdrop{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:#0000004d;z-index:99}.dd-lms-sidebar-toggle{position:fixed;top:.5rem;left:.5rem;z-index:11;width:2.25rem;height:2.25rem;background:var(--dd-surface-1);border:1px solid var(--dd-border);border-radius:var(--dd-radius)}.dd-lms-content{padding:1.5rem 1rem}.dd-lms-navbar{padding-left:3rem}.dd-focus-bar{padding:0 1rem}}.dd-focus-active .dd-lms-sidebar{width:0}.dd-focus-active .dd-lms-sidebar-toggle{opacity:0;pointer-events:none;transition:opacity .2s ease 0s}.dd-focus-active .dd-lms-navbar{height:0;min-height:0;padding:0;overflow:hidden;opacity:0;pointer-events:none;transition:height .35s cubic-bezier(.4,0,.2,1),opacity .2s ease,padding .35s cubic-bezier(.4,0,.2,1)}.dd-lms-navbar{transition:height .35s cubic-bezier(.4,0,.2,1),opacity .25s ease .1s,padding .35s cubic-bezier(.4,0,.2,1)}.dd-focus-active .dd-smoothnav,.dd-focus-active .dd-chapnav,.dd-focus-active .dd-chapnav-pill,.dd-focus-active .dd-lms-score{opacity:0;pointer-events:none;transition:opacity .2s ease}.dd-focus-exit{position:fixed;top:1rem;left:1rem;z-index:50;display:inline-flex;align-items:center;gap:.375rem;font-size:12px;font-weight:500;color:var(--dd-text-tertiary);cursor:pointer;padding:.375rem .75rem;border-radius:var(--dd-radius);background:var(--dd-surface-1);border:1px solid var(--dd-border);box-shadow:var(--dd-shadow-card);opacity:0;animation:dd-focus-btn-in .3s ease .3s forwards}@keyframes dd-focus-btn-in{to{opacity:.6}}.dd-focus-exit:hover{opacity:1!important;color:var(--dd-text);box-shadow:var(--dd-shadow-card-hover)}@keyframes dd-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.dd-skeleton{background:linear-gradient(90deg,var(--dd-surface-2) 25%,var(--dd-surface-3) 50%,var(--dd-surface-2) 75%);background-size:200% 100%;animation:dd-shimmer 1.5s infinite;border-radius:var(--dd-radius)}.dd-skeleton--text{height:1em;margin-bottom:.5em}.dd-skeleton--heading{height:1.5em;width:60%;margin-bottom:1em}.dd-skeleton--card{height:120px;margin-bottom:1rem}.dd-skeleton--circle{width:48px;height:48px;border-radius:50%}.dd-pill{display:inline-flex;align-items:center;padding:.375rem .875rem;border-radius:var(--dd-radius-full);border:1px solid var(--dd-border);background:transparent;color:var(--dd-text-secondary);font-size:.8125rem;cursor:pointer;transition:var(--dd-transition)}.dd-pill:hover{border-color:var(--dd-text-tertiary)}.dd-pill--active{background:var(--dd-accent);border-color:var(--dd-accent);color:#fff}.dd-community-badge--teacher{background:var(--dd-accent);color:#fff;border-color:var(--dd-accent);font-size:.6875rem;font-weight:600;letter-spacing:.02em}.dd-community-comment{padding:.75rem 0;border-top:1px solid var(--dd-border-light)}.dd-community-comment--teacher{border-left:3px solid var(--dd-accent);padding-left:1rem;margin-left:-.25rem}.dd-community-comments{margin-top:1rem;padding-top:.5rem}.dd-community-post--pinned{border-left:3px solid var(--dd-accent)}.dd-community-solved-banner{padding:.5rem .75rem;background:color-mix(in srgb,var(--dd-success) 10%,transparent);color:var(--dd-success);border-radius:var(--dd-radius);font-size:.8125rem;font-weight:500}.dd-community-post__preview{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.dd-stat-value{font-family:var(--dd-font-sans);font-size:1.75rem;font-weight:700;line-height:1;color:var(--dd-text);margin-bottom:.25rem}.dd-progress{height:.5rem;background:var(--dd-border-light);border-radius:var(--dd-radius-full);overflow:hidden}.dd-progress__fill{height:100%;background:var(--dd-accent);border-radius:var(--dd-radius-full);transition:width .7s ease-out;min-width:0}.dd-activity-calendar{display:grid;grid-template-columns:repeat(auto-fill,12px);grid-auto-rows:12px;gap:2px}.dd-activity-cell{width:12px;height:12px;border-radius:2px;background:var(--dd-border-light)}.dd-activity-cell--0{background:var(--dd-border-light)}.dd-activity-cell--1{background:color-mix(in srgb,var(--dd-accent) 25%,transparent)}.dd-activity-cell--2{background:color-mix(in srgb,var(--dd-accent) 55%,transparent)}.dd-activity-cell--3{background:var(--dd-accent)}.dark .dd-activity-cell--0{background:var(--dd-border)}.dark .dd-activity-cell--1{background:color-mix(in srgb,var(--dd-accent) 30%,transparent)}.dark .dd-activity-cell--2{background:color-mix(in srgb,var(--dd-accent) 60%,transparent)}.dark .dd-activity-cell--3{background:var(--dd-accent)}.dd-lms,.dd-lms-lesson{--dd-accent: var(--dd-accent-coral);--dd-accent-hover: #3A75B4;--dd-accent-muted: rgba(74, 133, 196, .2);--dd-accent-subtle: rgba(74, 133, 196, .06);--dd-accent-2: #3B6B9E;--dd-label: var(--dd-accent-coral);--dd-product-courses: var(--dd-primary);--dd-product-courses-2: #3B6B9E;--accent-rgb: 74, 133, 196;--dd-radius-lg: var(--dd-radius-lms-lg);--dd-transition-slow: var(--dd-transition-lms-slow);--dd-success: #2ecc71;--dd-warning: #f1c40f;--dd-danger: #e74c3c;--dd-fs-xs: 12px;--dd-fs-sm: 14px;--dd-fs-md: 16px;--dd-fs-lg: 18px;--dd-fs-xl: 26px;--dd-prose-max: 820px;--dd-aside-w: 220px}.dd-lms{max-width:820px;margin-inline:auto;padding:var(--dd-space-lg) var(--dd-space-md);color:var(--dd-text);font-family:var(--dd-font-sans);line-height:var(--dd-lh-normal)}.dd-lms :where(button):hover,.dd-lms :where(button):focus,.dd-lms :where(button):focus-visible,.dd-lms :where(button):active{background:unset;color:unset;border-color:unset;outline:none}.dd-lms :focus-visible{outline:none;box-shadow:0 0 0 3px color-mix(in srgb,var(--dd-product-courses) 25%,transparent)}@media (min-width: 1025px){.dd-lms:not(.dd-lms-player .dd-lms){transform:translate(-60px)}}.dd-lms-player .dd-lms{max-width:100%}.dd-lms__row{display:grid;grid-template-columns:1fr var(--dd-aside-w);-moz-column-gap:var(--dd-space-xl);column-gap:var(--dd-space-xl);width:calc(100% + var(--dd-space-xl) + var(--dd-aside-w));align-items:start}.dd-lms__row+.dd-lms__row>.dd-lms__aside{margin-top:var(--dd-space-md)}.dd-lms__aside{position:sticky;top:calc(var(--dd-header-h, 4.6rem) + var(--dd-chapnav-h, 0px) + var(--dd-space-md));align-self:start}@media (max-width: 1024px){.dd-lms__row{grid-template-columns:1fr;width:100%}.dd-lms__aside{position:static}}.dd-lms-core-explainer,.dd-lms-summary,.dd-lms-diagnose,.dd-lms-objectives,.dd-lms-contrast,.dd-lms-checkpoint,.dd-lms-diagram,.dd-lms-rule-box{max-width:var(--dd-prose-max)}.dd-lms-lesson__hero{text-align:center;margin-bottom:var(--dd-space-xxl)}.dd-lms-lesson__overline{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--dd-primary);margin-bottom:var(--dd-space-xs)}.dd-lms-lesson__title{font-family:var(--dd-font-serif);font-size:clamp(1.6rem,4vw,2.4rem);font-weight:700;line-height:var(--dd-lh-tight);color:var(--dd-text);margin-bottom:var(--dd-space-sm)}.dd-lms-lesson__subtitle{font-size:var(--dd-fs-lg);color:var(--dd-text-muted);max-width:600px;margin-inline:auto}[id^=dd-section-]{scroll-margin-top:calc(var(--dd-header-h, 4.6rem) + var(--dd-space-md))}.dd-lms__section,.dd-lms-lesson__section{margin-bottom:var(--dd-space-xl)}.dd-lms__heading,.dd-lms-lesson__heading{font-family:var(--dd-font-serif);font-size:clamp(1.25rem,2.5vw,1.5rem);font-weight:400;letter-spacing:-.01em;margin-bottom:var(--dd-space-md);color:var(--dd-text)}.dd-lms__subheading{font-family:var(--dd-font-serif);font-size:clamp(1.1rem,2.2vw,1.35rem);font-weight:400;letter-spacing:-.01em;color:var(--dd-text);margin:0}.dd-lms__section p,.dd-lms-lesson__section p{font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);line-height:var(--dd-lh-loose);margin-bottom:var(--dd-space-sm)}.dd-lms__completion{text-align:center;margin:var(--dd-space-xxl) 0 var(--dd-space-xs)}.dd-lms__completion+div>.dd-lms-sources{margin-top:0}.dd-lms__completion-label{display:inline-flex;align-items:center;gap:.4em;font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);font-weight:400;letter-spacing:.04em;color:var(--dd-text-muted)}.dd-lms__completion-label svg{color:var(--dd-success)}.dd-lms-lesson-notice{padding:var(--dd-space-md);background:var(--dd-surface);border:1px dashed var(--dd-warning);border-radius:var(--dd-radius-sm);color:var(--dd-text-muted);font-size:var(--dd-fs-sm);text-align:center}.dd-lms__exercise-block{border-top:2px solid color-mix(in srgb,var(--dd-product-courses) 40%,transparent);padding-top:var(--dd-space-lg);margin-top:var(--dd-space-lg)}.dd-lms__divider{border:none;height:1px;background:var(--dd-rule);margin:var(--dd-space-lg) 0}.dd-lms__hero{position:relative;text-align:left;margin-bottom:var(--dd-space-xxl);padding-top:var(--dd-space-xxl);padding-bottom:var(--dd-space-sm)}.dd-lms__hero+.dd-lms-objectives,.dd-lms__hero+.dd-lms__section:first-of-type{margin-top:calc(-1 * var(--dd-space-lg))}.dd-lms__hero-content{position:relative;z-index:1}.dd-lms__hero-watermark{position:absolute;right:calc(-.5 * (var(--dd-aside-w) + var(--dd-space-xl)));top:50%;transform:translateY(-50%);font-family:var(--dd-font-serif);font-size:clamp(10rem,22vw,18rem);font-weight:300;line-height:1;color:var(--dd-text);opacity:.04;pointer-events:none;-webkit-user-select:none;-moz-user-select:none;user-select:none;z-index:0}@media (max-width: 1024px){.dd-lms__hero-watermark{display:none}}.dd-lms__overline-group{margin-bottom:var(--dd-space-md)}.dd-lms__overline{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);font-weight:400;letter-spacing:.12em;text-transform:uppercase;color:var(--dd-product-courses);margin-bottom:0}.dd-lms__title{font-family:var(--dd-font-serif);font-size:clamp(2.2rem,5.5vw,3.8rem);font-weight:400;line-height:var(--dd-lh-tight);letter-spacing:-.02em;color:var(--dd-text);margin-bottom:var(--dd-space-sm)}.dd-lms__subtitle{font-family:var(--dd-font-sans);font-size:var(--dd-fs-lg);font-weight:400;line-height:var(--dd-lh-loose);color:var(--dd-text-muted);max-width:600px}.dd-lms__hero-divider{display:block;width:10rem;height:3px;background:var(--dd-product-courses);border:none;border-radius:1px;margin:var(--dd-space-lg) 0 var(--dd-space-sm)}.dd-lms__hero-description{font-family:var(--dd-font-sans);font-size:var(--dd-fs-lg);font-style:italic;line-height:var(--dd-lh-loose);color:var(--dd-text-muted);max-width:540px}.dd-lms-aside{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);line-height:var(--dd-lh-loose);color:var(--dd-text);padding:var(--dd-space-sm) var(--dd-space-md);border-left:3px solid var(--dd-rule)}.dd-lms-aside+.dd-lms-aside{margin-top:var(--dd-space-md)}.dd-lms-aside--tip{border-left-color:var(--dd-primary);background:#034f460a}.dd-lms-aside--note{border-left-color:#7896b4;background:#7896b40d}.dd-lms-aside--example{border-left-color:var(--dd-accent);background:#ff6f4c0a}.dd-lms-aside--warning{border-left-color:var(--dd-danger);background:#e74c3c0a}.dd-lms-aside--term{border-left-color:var(--dd-primary);background:#034f460a}.dd-lms-aside__label{display:block;font-size:var(--dd-fs-xs);font-weight:600;text-transform:uppercase;letter-spacing:.08em;margin-bottom:var(--dd-space-xs)}.dd-lms-aside--tip .dd-lms-aside__label{color:var(--dd-primary)}.dd-lms-aside--note .dd-lms-aside__label{color:#7896b4}.dd-lms-aside--example .dd-lms-aside__label{color:var(--dd-accent)}.dd-lms-aside--warning .dd-lms-aside__label{color:var(--dd-danger)}.dd-lms-aside__content{margin:0}.dd-lms-aside__term{font-family:var(--dd-font-serif);font-size:var(--dd-fs-md);font-weight:400;letter-spacing:-.01em;color:var(--dd-text);margin:0 0 var(--dd-space-xs)}.dd-lms-aside__def{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);color:var(--dd-text-muted);margin:0}.dd-lms-aside__de{font-family:var(--dd-font-serif);font-size:var(--dd-fs-md);font-weight:400;color:var(--dd-text);margin:0 0 var(--dd-space-xs)}.dd-lms-aside__en{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);font-style:italic;color:var(--dd-text-muted);margin:0}@media (max-width: 1024px){.dd-lms-aside{border-left:none;border-radius:var(--dd-radius-sm);padding:var(--dd-space-md)}.dd-lms-aside--tip{background:#034f460f}.dd-lms-aside--note{background:#7896b412}.dd-lms-aside--example{background:#ff6f4c0f}.dd-lms-aside--warning{background:#e74c3c0f}.dd-lms-aside--term{background:#034f460f}}.dd-lms-objectives .dd-lms__heading{margin-bottom:var(--dd-space-lg)}.dd-lms-objectives__list{list-style:none;padding:0;margin:0}.dd-lms-objectives__item{display:flex;align-items:flex-start;gap:var(--dd-space-md);padding:var(--dd-space-sm) 0;font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);line-height:var(--dd-lh-loose);color:var(--dd-text)}.dd-lms-objectives__item+.dd-lms-objectives__item{border-top:1px solid var(--dd-rule)}.dd-lms-objectives__icon{flex-shrink:0;color:#059669;margin-top:2px}.dd-lms img.emoji,.dd-lms img.wp-smiley{display:block;height:4em;width:4em;margin:var(--dd-space-md) 0 .25em}.dd-lms-explainer,.dd-lms-prose{--_card-px: var(--dd-space-lg);background:var(--dd-surface);border:1px solid rgba(0,0,0,.06);border-radius:var(--dd-radius-md);box-shadow:var(--dd-elevation-1);padding:var(--dd-space-lg) var(--_card-px);margin-left:calc(-1 * var(--_card-px));margin-right:calc(-1 * var(--_card-px))}@media (max-width: 480px){.dd-lms-explainer,.dd-lms-prose{--_card-px: var(--dd-space-md)}}.dd-lms-explainer{margin-top:var(--dd-space-lg);margin-bottom:var(--dd-space-xl);max-width:none}.dd-lms-explainer__quote{position:relative;padding-left:var(--dd-space-lg);margin:0 0 var(--dd-space-md)}.dd-lms-explainer__quote:before{content:"";position:absolute;left:0;top:.25em;width:3px;height:2rem;background:var(--dd-primary);border-radius:2px}.dd-lms-explainer__heading{font-family:var(--dd-font-serif);font-size:clamp(1.4rem,3vw,1.75rem);font-weight:400;letter-spacing:-.01em;color:var(--dd-text)}.dd-lms-explainer__body{font-family:var(--dd-font-serif);font-size:var(--dd-fs-lg);line-height:1.85;color:var(--dd-text);text-align:left}@media (min-width: 600px){.dd-lms-explainer__body{text-align:justify;-webkit-hyphens:auto;hyphens:auto}}.dd-lms-explainer__body strong{font-weight:inherit;background:transparent;border-bottom:2px solid var(--dd-product-courses);border-radius:0;padding:0}.dd-lms-explainer__body mark{background:color-mix(in srgb,var(--dd-product-courses) 12%,transparent);color:inherit;border-radius:2px;padding:.05em .15em}.dd-lms-explainer__body h3{font-family:var(--dd-font-serif);font-size:var(--dd-fs-lg);font-weight:400;color:var(--dd-product-courses);margin:var(--dd-space-lg) 0 var(--dd-space-sm);text-align:left}@media (max-width: 480px){.dd-lms-explainer__quote{padding-left:var(--dd-space-md)}}.dd-lms-prose{margin-top:var(--dd-space-lg);margin-bottom:var(--dd-space-xl);max-width:none}.dd-lms-prose__body{font-family:var(--dd-font-serif);font-size:var(--dd-fs-lg);line-height:1.85;color:var(--dd-text);text-align:left}@media (min-width: 600px){.dd-lms-prose__body{text-align:justify;-webkit-hyphens:auto;hyphens:auto}}.dd-lms-prose__body strong{font-weight:inherit;background:transparent;border-bottom:2px solid var(--dd-product-courses);border-radius:0;padding:0}.dd-lms-prose__body mark{background:color-mix(in srgb,var(--dd-product-courses) 12%,transparent);color:inherit;border-radius:2px;padding:.05em .15em}.dd-lms-prose__body h3{font-family:var(--dd-font-serif);font-size:var(--dd-fs-lg);font-weight:400;color:var(--dd-product-courses);margin:var(--dd-space-lg) 0 var(--dd-space-sm);text-align:left}.dd-lms-contrast__header{margin-bottom:var(--dd-space-md)}.dd-lms-contrast__icon{--_icon-color: var(--dd-product-courses)}.dd-lms-contrast__grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--dd-space-xl)}.dd-lms-contrast__col{padding:var(--dd-space-md) var(--dd-space-lg)}.dd-lms-contrast__col--b{border-left:2px solid var(--dd-product-courses)}p.dd-lms-contrast__label{font-family:var(--dd-font-sans);font-size:var(--dd-fs-xs);font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--dd-product-courses);margin-bottom:var(--dd-space-sm)}.dd-lms-contrast__content{font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);line-height:var(--dd-lh-loose);color:var(--dd-text)}.dd-lms-contrast__content mark{background:transparent;color:inherit;border-bottom:2px solid var(--dd-product-courses);border-radius:0;padding:0}p.dd-lms-contrast__note{font-family:var(--dd-font-serif);font-size:var(--dd-fs-md);color:var(--dd-text-muted);line-height:var(--dd-lh-loose);margin:var(--dd-space-md) 0 0;background:color-mix(in srgb,var(--dd-product-courses) 5%,transparent);border-radius:var(--dd-radius-sm);padding:var(--dd-space-sm) var(--dd-space-md)}@media (max-width: 480px){.dd-lms-contrast__grid{grid-template-columns:1fr;gap:var(--dd-space-sm)}.dd-lms-contrast__col{padding:var(--dd-space-sm) var(--dd-space-md)}.dd-lms-contrast__col--b{border-left:none;border-top:2px solid var(--dd-product-courses);padding-top:var(--dd-space-md)}}.dd-lms-table{margin-top:var(--dd-space-md);margin-bottom:var(--dd-space-xl)}.dd-lms-table__scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}.dd-lms-table__grid{width:100%;border-collapse:collapse;border-spacing:0}.dd-lms-table__grid thead th{font-family:var(--dd-font-serif);font-size:var(--dd-fs-sm);font-weight:400;letter-spacing:-.01em;color:var(--dd-text);text-align:left;padding:var(--dd-space-sm) var(--dd-space-md);border-bottom:1.5px solid var(--dd-rule);white-space:nowrap}.dd-lms-table__grid tbody tr{border-bottom:1px solid color-mix(in srgb,var(--dd-rule) 50%,transparent)}.dd-lms-table__grid tbody tr:last-child{border-bottom:1.5px solid var(--dd-rule)}.dd-lms-table__grid tbody tr:nth-child(2n){background:#00000005}@media (hover: hover){.dd-lms-table__grid tbody tr:hover{background:color-mix(in srgb,var(--dd-product-courses) 4%,transparent)}}.dd-lms-table__grid tbody td,.dd-lms-table__grid tbody th{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);line-height:var(--dd-lh-normal);color:var(--dd-text);padding:var(--dd-space-sm) var(--dd-space-md);vertical-align:top}.dd-lms-table__grid tbody td mark,.dd-lms-table__grid tbody th mark{background:transparent;color:inherit;border-bottom:2px solid var(--dd-product-courses);border-radius:0;padding:0}.dd-lms-table__row-label{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);font-weight:500;color:var(--dd-text-muted);white-space:nowrap}.dd-lms-table__cell--highlight{background:color-mix(in srgb,var(--dd-warning) 12%,transparent)}.dd-lms-table__note{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);line-height:var(--dd-lh-loose);color:var(--dd-text-muted);margin-top:var(--dd-space-sm);padding-left:var(--dd-space-md)}.dd-lms-table__note mark{background:transparent;color:inherit;border-bottom:2px solid var(--dd-product-courses);border-radius:0;padding:0}@media (max-width: 600px){.dd-lms-table__grid thead th:first-child,.dd-lms-table__grid tbody .dd-lms-table__row-label{position:sticky;left:0;background:var(--dd-bg);z-index:1}}.dd-lms-rule-box{position:relative;background:color-mix(in srgb,var(--dd-product-courses) 5%,transparent);border-left:3px solid var(--dd-product-courses);border-radius:0 var(--dd-radius-sm) var(--dd-radius-sm) 0;padding:var(--dd-space-lg);padding-left:calc(var(--dd-space-lg) + var(--dd-space-md));margin-top:var(--dd-space-md);margin-bottom:var(--dd-space-xl)}.dd-lms-rule-box__icon{position:absolute;left:var(--dd-space-md);top:var(--dd-space-lg);color:var(--dd-product-courses);opacity:.5}.dd-lms-rule-box__icon svg{width:22px;height:22px}.dd-lms-rule-box__rule{font-family:var(--dd-font-serif);font-size:clamp(1.2rem,2.5vw,1.5rem);font-weight:600;line-height:var(--dd-lh-tight);color:var(--dd-text);margin:0}.dd-lms-rule-box__rule mark{background:transparent;color:inherit;border-bottom:2px solid var(--dd-product-courses);border-radius:0;padding:0}.dd-lms-rule-box__detail{font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);line-height:var(--dd-lh-loose);color:var(--dd-text-muted);margin-top:var(--dd-space-sm)}.dd-lms-rule-box__detail mark{background:transparent;color:inherit;border-bottom:2px solid var(--dd-product-courses);border-radius:0;padding:0}.dd-lms-rule-box__detail strong{font-weight:600;color:var(--dd-text)}.dd-lms-summary{position:relative;border-top:2px solid var(--dd-product-courses);padding:0;margin-top:var(--dd-space-xxl)}.dd-lms-summary__label{display:block;font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);font-weight:400;letter-spacing:.04em;color:var(--dd-product-courses);text-align:center;margin:0 auto var(--dd-space-xl);transform:translateY(-50%);background:var(--dd-bg);padding:0 var(--dd-space-md);width:-moz-fit-content;width:fit-content}.dd-lms-summary__takeaways{list-style:none;counter-reset:none;padding:0;margin:0;display:flex;flex-direction:column;gap:var(--dd-space-md)}.dd-lms-summary__point{position:relative;display:flex;align-items:flex-start;gap:var(--dd-space-md);border-left:3px solid var(--_accent, var(--dd-accent));padding:var(--dd-space-md) var(--dd-space-lg);background:#00000004;border-radius:0 var(--dd-radius-sm) var(--dd-radius-sm) 0}.dd-lms-summary__point:nth-child(4n+1){--_accent: rgba(255, 111, 76, .45)}.dd-lms-summary__point:nth-child(4n+2){--_accent: rgba(140, 100, 200, .45)}.dd-lms-summary__point:nth-child(4n+3){--_accent: rgba(74, 143, 106, .45)}.dd-lms-summary__point:nth-child(4n+4){--_accent: rgba(120, 150, 180, .45)}.dd-lms-summary__point-num{font-family:var(--dd-font-serif);font-size:1.4rem;font-weight:300;color:var(--_accent, var(--dd-accent));opacity:.7;line-height:1.5;flex-shrink:0;-webkit-user-select:none;-moz-user-select:none;user-select:none;min-width:1.5rem}.dd-lms-summary__point-text{font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);line-height:var(--dd-lh-loose);color:var(--dd-text)}@media (max-width: 480px){.dd-lms-summary__point{padding:var(--dd-space-sm) var(--dd-space-md)}}.dd-lms-structure-map__header{margin-bottom:var(--dd-space-lg)}.dd-lms-structure-map__icon{--_icon-color: var(--dd-text-muted);background:#0000000a}.dd-lms-structure-map__slots{display:flex;flex-wrap:wrap;gap:var(--dd-space-sm);margin-bottom:var(--dd-space-md)}.dd-lms-structure-map__slot{display:flex;flex-direction:column;align-items:center;padding:var(--dd-space-sm) var(--dd-space-md);padding-bottom:var(--dd-space-md);border-radius:var(--dd-radius-sm);min-width:80px;border:1.5px solid var(--dd-rule);background:var(--dd-bg)}.dd-lms-structure-map__slot--article{border-color:#6366f140;background:#6366f10a}.dd-lms-structure-map__slot--adjective{border-color:#d9770640;background:#d977060a}.dd-lms-structure-map__slot--noun{border-color:#0891b240;background:#0891b20a}.dd-lms-structure-map__slot--verb{border-color:#dc262640;background:#dc26260a}.dd-lms-structure-map__slot--adverb{border-color:#7c3aed40;background:#7c3aed0a}.dd-lms-structure-map__slot--pronoun{border-color:#05966940;background:#0596690a}.dd-lms-structure-map__slot--preposition{border-color:#b4530940;background:#b453090a}.dd-lms-structure-map__slot--article .dd-lms-structure-map__label{color:#6366f1}.dd-lms-structure-map__slot--adjective .dd-lms-structure-map__label{color:#d97706}.dd-lms-structure-map__slot--noun .dd-lms-structure-map__label{color:#0891b2}.dd-lms-structure-map__slot--verb .dd-lms-structure-map__label{color:#dc2626}.dd-lms-structure-map__slot--adverb .dd-lms-structure-map__label{color:#7c3aed}.dd-lms-structure-map__slot--pronoun .dd-lms-structure-map__label{color:#059669}.dd-lms-structure-map__slot--preposition .dd-lms-structure-map__label{color:#b45309}.dd-lms-structure-map__hl--article{color:#6366f1;font-weight:600}.dd-lms-structure-map__hl--adjective{color:#d97706;font-weight:600}.dd-lms-structure-map__hl--noun{color:#0891b2;font-weight:600}.dd-lms-structure-map__hl--verb{color:#dc2626;font-weight:600}.dd-lms-structure-map__hl--adverb{color:#7c3aed;font-weight:600}.dd-lms-structure-map__hl--pronoun{color:#059669;font-weight:600}.dd-lms-structure-map__hl--preposition{color:#b45309;font-weight:600}.dd-lms-structure-map__label{font-family:var(--dd-font-sans);font-size:var(--dd-fs-xs);font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--dd-label);margin-bottom:var(--dd-space-xs)}.dd-lms-structure-map__value{font-family:var(--dd-font-serif);font-size:var(--dd-fs-lg);color:var(--dd-text)}.dd-lms-structure-map__caption{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);color:var(--dd-text);font-style:italic}.dd-lms-structure-map__explanation{font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);line-height:var(--dd-lh-loose);color:var(--dd-text-muted);margin-top:var(--dd-space-sm);text-align:justify}.dd-lms-structure-map__explanation p{font-family:inherit;font-size:inherit;line-height:inherit;color:inherit;margin:0 0 var(--dd-space-sm)}.dd-lms-structure-map__explanation p:last-child{margin-bottom:0}.dd-lms-vocab__grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--dd-space-xl) var(--dd-space-xl)}@media (max-width: 640px){.dd-lms-vocab__grid{grid-template-columns:1fr}}.dd-lms-vocab__zone--0{background:#a8a29e14}.dd-lms-vocab__zone--1{background:#d977060d}.dd-lms-vocab__zone--2{background:#be123c0a}.dd-lms-vocab__zone--3{background:#0596690a}.dd-lms-vocab__item{position:relative;transition:box-shadow .35s ease,transform .35s ease;overflow:hidden;border:1px solid rgba(168,162,158,.15);border-radius:var(--dd-radius-sm)}@media (hover: hover){.dd-lms-vocab__item:hover{box-shadow:0 4px 16px #00000014;transform:translateY(-2px)}}.dd-lms-vocab__accent{position:absolute;left:0;top:0;width:3px;height:100%;opacity:.25;transition:opacity .3s ease;background:#a8a29e80}[data-gender=masculine] .dd-lms-vocab__accent{background:#b4530980}[data-gender=feminine] .dd-lms-vocab__accent{background:#be123c80}[data-gender=neuter] .dd-lms-vocab__accent{background:#065f4680}.dd-lms-vocab__item:hover .dd-lms-vocab__accent{opacity:1}.dd-lms-vocab__inner{display:flex;flex-direction:column;gap:.5rem;padding:var(--dd-space-md) var(--dd-space-lg) var(--dd-space-md) calc(var(--dd-space-lg) + 3px)}.dd-lms-vocab__header{display:flex;align-items:center;justify-content:space-between;gap:var(--dd-space-md)}.dd-lms-vocab__word{font-family:var(--dd-font-serif);font-size:clamp(1.75rem,3.5vw,1.875rem);font-weight:400;letter-spacing:-.01em;line-height:1;color:var(--dd-text)}.dd-lms-vocab__badge{font-family:var(--dd-font-sans);font-size:.625rem;font-weight:500;letter-spacing:.08em;text-transform:uppercase;padding:.2em .5em;border-radius:2px;flex-shrink:0}.dd-lms-vocab__badge--masculine{color:#b45309d9;background:#d977061f}.dd-lms-vocab__badge--feminine{color:#be123cd9;background:#be123c1f}.dd-lms-vocab__badge--neuter{color:#065f46d9;background:#0596691f}.dd-lms-vocab__divider{border:none;height:1px;width:3rem;margin:0;background:#a8a29e4d}p.dd-lms-vocab__translation{font-family:var(--dd-font-sans);font-size:.9375rem;font-weight:300;letter-spacing:.02em;line-height:var(--dd-lh-loose);color:var(--dd-text-muted);padding-left:.65rem;border-left:2px solid rgba(168,162,158,.18)}p.dd-lms-vocab__note{font-family:var(--dd-font-sans);font-size:12px;font-style:italic;line-height:1.4;color:#57534e8c;padding-top:.35rem;border-top:1px solid rgba(168,162,158,.15)}.dd-lms-vocab__header-actions{display:flex;align-items:center;gap:var(--dd-space-xs)}.dd-lms-audio-btn{display:inline-flex;align-items:center;justify-content:center;width:2rem;height:2rem;border:1px solid rgba(0,0,0,.12);border-radius:50%;background:#00000008;color:#00000059;cursor:pointer;outline:none;-webkit-tap-highlight-color:transparent;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .15s ease;flex-shrink:0}.dd-lms-audio-btn svg{display:inline-block;width:14px;height:14px;max-width:none;flex-shrink:0}.dd-lms-audio-btn:hover{background:#0000000f;border-color:#0003;color:#0000008c}.dd-lms-audio-btn:focus,.dd-lms-audio-btn:focus-visible{outline:none;background:#00000008;border-color:#0000001f;color:#00000059}.dd-lms-audio-btn:active{transform:scale(.9);color:#00000059}.dd-lms-audio-btn.is-speaking{color:var(--dd-accent);border-color:#ff6f4c4d;animation:dd-pulse .8s ease infinite}.dd-lms-dialog{--_card-px: var(--dd-space-lg);background:var(--dd-surface);border:1px solid rgba(0,0,0,.06);border-radius:var(--dd-radius-md);box-shadow:var(--dd-elevation-1);padding:var(--dd-space-lg) var(--_card-px);margin-left:calc(-1 * var(--_card-px));margin-right:calc(-1 * var(--_card-px));margin-top:var(--dd-space-lg);margin-bottom:var(--dd-space-xl);max-width:none}@media (max-width: 480px){.dd-lms-dialog{--_card-px: var(--dd-space-md)}}.dd-lms-dialog__heading{font-family:var(--dd-font-serif);font-size:var(--dd-fs-lg);font-weight:400;color:var(--dd-product-courses);margin:0 0 var(--dd-space-sm)}.dd-lms-dialog__register-badge{font-family:var(--dd-font-sans);font-size:.625rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;padding:.2em .55em;border-radius:2px;vertical-align:middle;margin-left:var(--dd-space-sm)}.dd-lms-dialog__register-badge--informal{color:#4a8f6ad9;background:#4a8f6a1f}.dd-lms-dialog__register-badge--formal{color:#8c64c8d9;background:#8c64c81f}.dd-lms-dialog__register-badge--mixed{color:#7896b4d9;background:#7896b41f}.dd-lms-dialog__situation{font-family:var(--dd-font-serif);font-size:var(--dd-fs-sm);font-style:italic;color:var(--dd-text-muted);text-align:left;margin-bottom:var(--dd-space-md)}.dd-lms-dialog__toolbar{display:flex;align-items:center;flex-wrap:wrap;gap:6px;margin:var(--dd-space-md) 0 var(--dd-space-lg)}.dd-lms-dialog__pills{display:flex;flex-wrap:wrap;gap:6px}.dd-lms-dialog__toggle-btn{display:inline-flex;align-items:center;gap:6px;margin-left:auto;padding:.4em 1em;border:1.5px solid var(--dd-rule);border-radius:var(--dd-radius-sm);background:transparent;font-family:var(--dd-font-sans);font-size:var(--dd-fs-xs);font-weight:500;color:var(--dd-text-muted);cursor:pointer;outline:none;-webkit-tap-highlight-color:transparent;transition:border-color .2s ease,color .2s ease,background .2s ease,transform .15s ease}.dd-lms-dialog__toggle-btn:hover{border-color:#0003;background:#00000005;color:var(--dd-text-muted)}.dd-lms-dialog__toggle-btn:focus,.dd-lms-dialog__toggle-btn:focus-visible{outline:none;color:var(--dd-text-muted);background:transparent;border-color:var(--dd-rule)}.dd-lms-dialog__toggle-btn:active{transform:scale(.98);color:var(--dd-text-muted)}.dd-lms-dialog__toggle-btn svg{flex-shrink:0}.dd-lms-dialog__pill{--_pill-color: 120, 150, 180;display:inline-flex;align-items:center;gap:6px;font-family:var(--dd-font-sans);font-size:var(--dd-fs-xs);font-weight:500;padding:.4em 1em;border:1.5px solid var(--dd-rule);border-radius:var(--dd-radius-sm);background:transparent;color:var(--dd-text-muted);cursor:pointer;outline:none;-webkit-tap-highlight-color:transparent;transition:border-color .2s ease,background .2s ease,color .2s ease,transform .15s ease}.dd-lms-dialog__pill:hover{border-color:rgba(var(--_pill-color),.4);background:rgba(var(--_pill-color),.04);color:rgb(var(--_pill-color))}.dd-lms-dialog__pill:focus,.dd-lms-dialog__pill:focus-visible{outline:none;color:var(--dd-text-muted);background:transparent;border-color:var(--dd-rule)}.dd-lms-dialog__pill:active{transform:scale(.98)}.dd-lms-dialog__pill.is-active{border-color:rgba(var(--_pill-color),.5);background:rgba(var(--_pill-color),.08);color:rgb(var(--_pill-color));font-weight:600}.dd-lms-dialog__pill.is-active .dd-lms-dialog__register-badge{color:rgba(var(--_pill-color),.85);background:rgba(var(--_pill-color),.12)}.dd-lms-dialog__pill.is-active:hover{border-color:rgba(var(--_pill-color),.6);background:rgba(var(--_pill-color),.12);color:rgb(var(--_pill-color))}.dd-lms-dialog__pill.is-active:focus,.dd-lms-dialog__pill.is-active:focus-visible{outline:none;border-color:rgba(var(--_pill-color),.5);background:rgba(var(--_pill-color),.08);color:rgb(var(--_pill-color))}.dd-lms-dialog__pill.is-active:active{transform:scale(.98);color:rgb(var(--_pill-color))}.dd-lms-dialog__pill[data-variant=informal]{--_pill-color: 74, 143, 106}.dd-lms-dialog__pill[data-variant=formal]{--_pill-color: 140, 100, 200}.dd-lms-dialog__panel{display:none}.dd-lms-dialog__panel.is-active,.dd-lms-dialog__lines{display:block}.dd-lms-dialog__line{margin-bottom:var(--dd-space-md)}.dd-lms-dialog__line:last-child{margin-bottom:0}.dd-lms-dialog__speaker{font-weight:inherit;background:transparent;border-bottom:2px solid var(--dd-product-courses);border-radius:0;padding:0}.dd-lms-dialog__line--learner .dd-lms-dialog__speaker{border-bottom-color:#4a8f6a}p.dd-lms-dialog__text{font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);font-weight:400;line-height:var(--dd-lh-loose);color:var(--dd-text);margin:0}.dd-lms-dialog__line--learner{padding-left:var(--dd-space-lg)}p.dd-lms-dialog__translation{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);font-style:italic;color:#00000059;margin:var(--dd-space-xs) 0 0;padding-left:var(--dd-space-lg);line-height:var(--dd-lh-normal)}p.dd-lms-dialog__translation:not([hidden]){animation:dd-slide-up .25s ease}.dd-lms-dialog__translation[hidden]{display:none}.dd-lms-dialog__vocab-note{font-family:var(--dd-font-sans);font-size:var(--dd-fs-xs);color:var(--dd-text-muted);margin:var(--dd-space-xs) 0 0;padding-left:var(--dd-space-sm);border-left:2px solid var(--dd-product-courses)}.dd-lms-dialog__line--learner .dd-lms-dialog__vocab-note{margin-left:0}.dd-lms-dialog__direction{font-family:var(--dd-font-serif);font-style:italic;font-size:var(--dd-fs-sm);color:var(--dd-text-muted);padding:var(--dd-space-md) 0 var(--dd-space-sm);margin:0}p.dd-lms-dialog__note{font-family:var(--dd-font-serif);font-size:var(--dd-fs-md);font-style:italic;color:var(--dd-text-muted);margin-top:var(--dd-space-lg);line-height:var(--dd-lh-loose)}@media (max-width: 480px){.dd-lms-dialog__line--learner{padding-left:var(--dd-space-md)}}@media print{.dd-lms-dialog__translation[hidden]{display:block!important}.dd-lms-dialog__toolbar,.dd-lms-dialog__pills{display:none}.dd-lms-dialog__panel{display:block!important}}.dd-lms-exercise{border-top:1px solid var(--dd-rule);padding:var(--dd-space-xl) 0;margin-bottom:var(--dd-space-lg)}.dd-lms-exercise__heading{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--dd-label);margin-bottom:var(--dd-space-md)}.dd-lms-exercise__instruction{font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);line-height:var(--dd-lh-loose);color:var(--dd-text-muted);margin-bottom:var(--dd-space-md)}.dd-lms-exercise__blank{display:inline-block;min-width:80px;border-bottom:1px solid var(--dd-primary);padding:.1em .3em;font-family:var(--dd-font-serif);font-size:var(--dd-fs-lg);text-align:center;color:var(--dd-primary);background:transparent;transition:border-color var(--dd-transition-fast)}.dd-lms-exercise__blank:focus{outline:none;border-color:var(--dd-accent)}.dd-lms-exercise__sentence{font-family:var(--dd-font-serif);font-size:clamp(1.1rem,2.5vw,1.4rem);line-height:2;margin-bottom:var(--dd-space-sm)}.dd-lms-instruction{font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);line-height:var(--dd-lh-loose);color:var(--dd-text-muted);margin-bottom:var(--dd-space-md)}.dd-lms-section-header+.dd-lms-type-hint,.dd-lms-checkpoint__label+.dd-lms-type-hint{margin-top:calc(-1 * var(--dd-space-md) + .25rem)}p.dd-lms-type-hint{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);line-height:1;color:var(--dd-text);margin:0 0 var(--dd-space-md);padding-left:calc(2.2rem + var(--dd-space-sm))}.dd-lms-type-hint__name{color:var(--dd-product-courses)}.dd-lms-section-header{display:flex;align-items:center;gap:var(--dd-space-sm);margin-bottom:var(--dd-space-md)}.dd-lms-section-icon{display:flex;align-items:center;justify-content:center;width:2.2rem;height:2.2rem;border-radius:50%;background:color-mix(in srgb,var(--_icon-color, var(--dd-product-courses)) 8%,transparent);color:var(--_icon-color, var(--dd-product-courses));flex-shrink:0}.dd-lms-progress-text{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);color:var(--dd-text-muted)}.dd-lms-btn-check{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);font-weight:500;padding:.55em 1.2em;border:1.5px solid var(--dd-product-courses);border-radius:var(--dd-radius-sm);background:transparent;color:var(--dd-product-courses);cursor:pointer;outline:none;-webkit-tap-highlight-color:transparent;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .15s ease}.dd-lms-btn-check:hover{background:color-mix(in srgb,var(--dd-product-courses) 6%,transparent);border-color:var(--dd-product-courses);color:var(--dd-product-courses)}.dd-lms-btn-check:focus,.dd-lms-btn-check:focus-visible{outline:none;border-color:var(--dd-product-courses);color:var(--dd-product-courses)}.dd-lms-btn-check:active{transform:scale(.98)}.dd-lms-btn-check:disabled{opacity:.5;cursor:default}.dd-lms-btn-retry{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);font-weight:500;padding:.55em 1.2em;border:1.5px solid var(--dd-rule);border-radius:var(--dd-radius-sm);background:transparent;color:var(--dd-text-muted);cursor:pointer;outline:none;-webkit-tap-highlight-color:transparent;transition:background .15s ease,border-color .15s ease,color .15s ease}.dd-lms-btn-retry:hover{border-color:var(--dd-primary);background:color-mix(in srgb,var(--dd-primary) 6%,transparent);color:var(--dd-primary)}.dd-lms-btn-retry:focus,.dd-lms-btn-retry:focus-visible{outline:none;border-color:var(--dd-primary);color:var(--dd-primary)}.dd-lms-btn-retry:active{transform:scale(.98)}.dd-lms-practice__result,.dd-lms-fill-blanks__score,.dd-lms-mark-words__score,.dd-lms-sort-blocks__score,.dd-lms-drag-words__score,.dd-lms-multiple-choice__score,.dd-lms-matching__score,.dd-lms-true-false__score,.dd-lms-spot-pattern__feedback,.dd-lms-diagnose__score{padding:var(--dd-space-sm) var(--dd-space-lg);font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);font-weight:600;line-height:var(--dd-lh-loose);border-radius:0}.dd-lms-practice__result.is-correct,.dd-lms-fill-blanks__score.is-correct,.dd-lms-mark-words__score.is-correct,.dd-lms-sort-blocks__score.is-correct,.dd-lms-drag-words__score.is-correct,.dd-lms-multiple-choice__score.is-correct,.dd-lms-matching__score.is-correct,.dd-lms-true-false__score.is-correct,.dd-lms-spot-pattern__feedback.is-correct,.dd-lms-diagnose__score.is-correct,.dd-lms-practice__result--perfect,.dd-lms-fill-blanks__score--perfect,.dd-lms-mark-words__score--perfect,.dd-lms-sort-blocks__score--perfect,.dd-lms-drag-words__score--perfect,.dd-lms-multiple-choice__score--perfect,.dd-lms-matching__score--perfect,.dd-lms-true-false__score--perfect,.dd-lms-spot-pattern__feedback--perfect,.dd-lms-diagnose__score--perfect{background:rgba(var(--dd-success-rgb),.06);border-left:3px solid var(--dd-success);color:var(--dd-success)}.dd-lms-practice__result.is-incorrect,.dd-lms-fill-blanks__score.is-incorrect,.dd-lms-mark-words__score.is-incorrect,.dd-lms-sort-blocks__score.is-incorrect,.dd-lms-drag-words__score.is-incorrect,.dd-lms-multiple-choice__score.is-incorrect,.dd-lms-matching__score.is-incorrect,.dd-lms-true-false__score.is-incorrect,.dd-lms-spot-pattern__feedback.is-incorrect,.dd-lms-diagnose__score.is-incorrect,.dd-lms-practice__result--partial,.dd-lms-fill-blanks__score--partial,.dd-lms-mark-words__score--partial,.dd-lms-sort-blocks__score--partial,.dd-lms-drag-words__score--partial,.dd-lms-multiple-choice__score--partial,.dd-lms-matching__score--partial,.dd-lms-true-false__score--partial,.dd-lms-spot-pattern__feedback--partial,.dd-lms-diagnose__score--partial{background:rgba(var(--dd-danger-rgb),.06);border-left:3px solid var(--dd-danger);color:var(--dd-danger)}.dd-lms-checkpoint__feedback{padding:var(--dd-space-sm) var(--dd-space-md);border-radius:var(--dd-radius-sm);font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);line-height:var(--dd-lh-loose);animation:dd-fade-in .25s ease}.dd-lms-checkpoint__feedback--success{background:rgba(var(--dd-success-rgb),.06);border:1px solid rgba(var(--dd-success-rgb),.15);color:var(--dd-text)}.dd-lms-checkpoint__feedback--error{background:rgba(var(--dd-danger-rgb),.04);border:1px solid rgba(var(--dd-danger-rgb),.15);color:var(--dd-danger)}.dd-lms-practice__instruction{margin-bottom:var(--dd-space-lg)}.dd-lms-practice__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--dd-space-md)}.dd-lms-practice__card{padding:var(--dd-space-md) 0;border-bottom:1px solid var(--dd-rule)}.dd-lms-practice__label{display:inline;font-size:var(--dd-fs-xs);font-weight:600;text-transform:uppercase;letter-spacing:.12em;color:var(--dd-primary);margin-right:.5em}.dd-lms-practice__prompt{font-family:var(--dd-font-serif);font-size:clamp(1.1rem,2.5vw,1.35rem);font-weight:400;line-height:1.5;letter-spacing:-.01em;margin-bottom:0}.dd-lms-practice__input-row{display:flex;gap:var(--dd-space-sm);align-items:stretch;margin-top:var(--dd-space-sm)}.dd-lms-practice__input{-moz-appearance:none;appearance:none;-webkit-appearance:none;box-sizing:content-box;font-family:var(--dd-font-serif);font-size:var(--dd-fs-lg);line-height:1.2;padding:.1em .3em;border:1px solid var(--dd-rule);border-radius:var(--dd-radius-sm);background:var(--dd-bg);color:var(--dd-text);min-width:0;flex:1;outline:none;transition:border-color .2s ease,box-shadow .2s ease}.dd-lms-practice__input:focus,.dd-lms-practice__input:focus-visible{border-color:var(--dd-product-courses);box-shadow:0 0 0 3px color-mix(in srgb,var(--dd-product-courses) 25%,transparent);outline:none}.dd-lms-practice__input::-moz-placeholder{color:#0003;font-style:italic}.dd-lms-practice__input::placeholder{color:#0003;font-style:italic}.dd-lms-practice__result{margin-top:var(--dd-space-sm)}.dd-lms-practice__input--correct{border-color:var(--dd-success);color:var(--dd-success)}.dd-lms-practice__input--incorrect{animation:dd-shake .35s ease}.dd-lms-practice__hint{margin-top:var(--dd-space-sm)}.dd-lms-practice__hint-toggle{display:inline-flex;align-items:center;gap:6px;padding:.55em 1.2em;border:1.5px solid var(--dd-rule);border-radius:var(--dd-radius-sm);background:transparent;font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);font-weight:500;color:var(--dd-text-muted);cursor:pointer;outline:none;-webkit-tap-highlight-color:transparent;transition:border-color .2s ease,color .2s ease,background .2s ease,transform .15s ease}.dd-lms-practice__hint-toggle:hover{border-color:#0003;background:#00000005;color:var(--dd-text-muted)}.dd-lms-practice__hint-toggle:focus,.dd-lms-practice__hint-toggle:focus-visible{outline:none;color:var(--dd-text-muted);background:transparent;border-color:var(--dd-rule)}.dd-lms-practice__hint-toggle:active{transform:scale(.98);color:var(--dd-text-muted)}.dd-lms-practice__hint-toggle[hidden]{display:none}.dd-lms-practice__hint-toggle svg{flex-shrink:0}.dd-lms-practice__hint-body{position:relative;background:#00000008;border-left:3px solid rgba(0,0,0,.15);padding:var(--dd-space-sm) var(--dd-space-lg);padding-right:calc(var(--dd-space-lg) + 28px);font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);line-height:var(--dd-lh-loose);color:var(--dd-text-muted);animation:dd-fade-in .25s ease}.dd-lms-practice__hint-body p{margin:0}.dd-lms-practice__hint-close{position:absolute;top:50%;right:var(--dd-space-sm);transform:translateY(-50%);display:flex;align-items:center;justify-content:center;width:28px;height:28px;padding:0;border:none;border-radius:var(--dd-radius-sm);background:transparent;color:#0000004d;cursor:pointer;outline:none;-webkit-tap-highlight-color:transparent;transition:color .2s ease,background .2s ease}.dd-lms-practice__hint-close:hover{color:#00000080;background:#0000000d}.dd-lms-practice__hint-close:focus,.dd-lms-practice__hint-close:focus-visible{outline:none}.dd-lms-diagnose__item{margin-bottom:var(--dd-space-lg)}.dd-lms-diagnose__item:last-child{margin-bottom:0}.dd-lms-diagnose__row{display:flex;align-items:center;gap:var(--dd-space-sm);padding:var(--dd-space-sm) var(--dd-space-md);border-radius:var(--dd-radius-sm);font-family:var(--dd-font-serif);font-size:var(--dd-fs-lg);line-height:var(--dd-lh-loose);margin-bottom:var(--dd-space-xs)}.dd-lms-diagnose__icon{flex-shrink:0}.dd-lms-diagnose__row--error{background:rgba(var(--dd-danger-rgb),.08)}.dd-lms-diagnose__row--error .dd-lms-diagnose__icon{color:var(--dd-danger)}.dd-lms-diagnose__row--error strong,.dd-lms-diagnose__row--error mark{background:rgba(var(--dd-danger-rgb),.1);border-bottom:2px solid rgba(var(--dd-danger-rgb),.4);border-radius:2px;padding:0 .15em}.dd-lms-diagnose__row--correct{background:rgba(var(--dd-success-rgb),.1)}.dd-lms-diagnose__row--correct .dd-lms-diagnose__icon{color:var(--dd-success)}.dd-lms-diagnose__challenge{font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);font-weight:500;color:var(--dd-text-muted);margin-bottom:var(--dd-space-sm)}.dd-lms-diagnose__reveal{margin-top:var(--dd-space-sm)}.dd-lms-diagnose__solution{margin-top:var(--dd-space-md);animation:dd-fade-in .3s ease}.dd-lms-diagnose__because{font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);line-height:var(--dd-lh-loose);color:var(--dd-text-muted);margin-top:var(--dd-space-sm);padding-left:0}.dd-lms-diagnose__input-row{display:flex;align-items:stretch;gap:var(--dd-space-sm);margin-top:var(--dd-space-sm)}.dd-lms-diagnose__input{-moz-appearance:none;appearance:none;-webkit-appearance:none;box-sizing:content-box;font-family:var(--dd-font-serif);font-size:var(--dd-fs-lg);line-height:1.2;padding:.1em .3em;border:1px solid var(--dd-rule);border-radius:var(--dd-radius-sm);background:var(--dd-bg);color:var(--dd-text);min-width:0;width:50%;outline:none;transition:border-color .2s ease,box-shadow .2s ease}.dd-lms-diagnose__input:focus,.dd-lms-diagnose__input:focus-visible{border-color:var(--dd-product-courses);box-shadow:0 0 0 3px color-mix(in srgb,var(--dd-product-courses) 25%,transparent);outline:none}.dd-lms-diagnose__input::-moz-placeholder{color:#0003;font-style:italic}.dd-lms-diagnose__input::placeholder{color:#0003;font-style:italic}.is-correct .dd-lms-diagnose__input{border-color:var(--dd-success);color:var(--dd-success)}.is-incorrect.is-answered .dd-lms-diagnose__input{border-color:var(--dd-danger);color:var(--dd-danger)}.dd-lms-diagnose__input.is-incorrect{animation:dd-shake .35s ease}.dd-lms-diagnose__hint{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);color:var(--dd-text-muted);font-style:italic;animation:dd-fade-in .25s ease;margin-top:var(--dd-space-xs)}.dd-lms-diagnose__skip{margin-top:var(--dd-space-xs);display:block}.dd-lms-diagnose__toolbar{display:flex;align-items:center;gap:var(--dd-space-sm);margin-bottom:var(--dd-space-md)}.dd-lms-diagnose__progress-text{margin-right:auto}.dd-lms-diagnose__score[hidden]{display:none}.dd-lms-spot-pattern{display:grid;grid-template-columns:1fr 1fr;gap:var(--dd-space-sm) var(--dd-space-lg)}@media (max-width: 600px){.dd-lms-spot-pattern{grid-template-columns:1fr}}.dd-lms-spot-pattern__header{grid-column:1 / -1;margin-bottom:0}.dd-lms-spot-pattern>.dd-lms-type-hint{grid-column:1 / -1;margin-top:calc(-1 * var(--dd-space-sm) + .25rem)}.dd-lms-spot-pattern__icon{--_icon-color: var(--dd-product-courses)}.dd-lms-spot-pattern__instruction{grid-column:1 / -1;font-family:var(--dd-font-serif);font-size:clamp(1.1rem,2.5vw,1.35rem);font-weight:400;font-style:italic;color:var(--dd-text);margin:0}.dd-lms-spot-pattern__examples{grid-column:1;display:flex;flex-direction:column;gap:var(--dd-space-sm)}.dd-lms-spot-pattern__example{position:relative;padding:var(--dd-space-sm) var(--dd-space-sm) var(--dd-space-sm) calc(var(--dd-space-sm) + 1.8rem);background:color-mix(in srgb,var(--dd-product-courses) 3%,transparent);border:1.5px solid color-mix(in srgb,var(--dd-product-courses) 12%,transparent);border-radius:var(--dd-radius-md);margin:0}.dd-lms-spot-pattern__number{position:absolute;left:var(--dd-space-xs);top:var(--dd-space-sm);font-family:var(--dd-font-sans);font-size:var(--dd-fs-xs);font-weight:700;color:var(--dd-product-courses);opacity:.5;line-height:1;-webkit-user-select:none;-moz-user-select:none;user-select:none}.dd-lms-spot-pattern__sentence{font-family:var(--dd-font-serif);font-size:clamp(1.1rem,2.5vw,1.35rem);font-weight:400;line-height:var(--dd-lh-normal);color:var(--dd-text);margin:0}.dd-lms-spot-pattern__sentence mark{background:transparent;color:inherit;border-bottom:2px solid var(--dd-product-courses);border-radius:0;padding:0}.dd-lms-spot-pattern__translation{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);font-style:italic;color:var(--dd-text-muted);margin:.35em 0 0}.dd-lms-spot-pattern__options{grid-column:2;align-self:center;display:flex;flex-direction:column;gap:var(--dd-space-xs)}@media (max-width: 600px){.dd-lms-spot-pattern__options{grid-column:1}}.dd-lms-spot-pattern__option{display:flex;align-items:center;gap:var(--dd-space-sm);padding:var(--dd-space-sm) var(--dd-space-md);border:1.5px solid var(--dd-rule);border-radius:var(--dd-radius-sm);background:transparent;cursor:pointer;transition:border-color .2s ease,background .2s ease,box-shadow .2s ease,transform .15s ease;font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);color:var(--dd-text);outline:none;-webkit-tap-highlight-color:transparent;text-align:left}.dd-lms-spot-pattern__option:hover{border-color:var(--dd-product-courses);background:color-mix(in srgb,var(--dd-product-courses) 3%,transparent);box-shadow:0 2px 8px color-mix(in srgb,var(--dd-product-courses) 10%,transparent);color:var(--dd-text)}.dd-lms-spot-pattern__option:focus,.dd-lms-spot-pattern__option:focus-visible{border-color:var(--dd-product-courses);color:var(--dd-text)}.dd-lms-spot-pattern__option:active{transform:scale(.98);color:var(--dd-text)}.dd-lms-spot-pattern__option-letter{display:flex;align-items:center;justify-content:center;width:1.6rem;height:1.6rem;border-radius:50%;background:color-mix(in srgb,var(--dd-product-courses) 8%,transparent);font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);font-weight:700;color:var(--dd-product-courses);flex-shrink:0;transition:background .2s ease}.dd-lms-spot-pattern__option:hover .dd-lms-spot-pattern__option-letter{background:color-mix(in srgb,var(--dd-product-courses) 15%,transparent)}.dd-lms-spot-pattern.is-answered .dd-lms-spot-pattern__option{cursor:default;opacity:.4;transform:none}.dd-lms-spot-pattern.is-answered .dd-lms-spot-pattern__option:hover{border-color:var(--dd-rule);background:transparent;box-shadow:none;color:var(--dd-text)}.dd-lms-spot-pattern.is-answered .dd-lms-spot-pattern__option--correct,.dd-lms-spot-pattern.is-answered .dd-lms-spot-pattern__option--incorrect{opacity:1}.dd-lms-spot-pattern__option--correct{border-color:var(--dd-success);background:rgba(var(--dd-success-rgb),.06);color:var(--dd-text)}.dd-lms-spot-pattern__option--correct:hover{color:var(--dd-text)}.dd-lms-spot-pattern__option--correct .dd-lms-spot-pattern__option-letter{background:rgba(var(--dd-success-rgb),.12);color:var(--dd-text)}.dd-lms-spot-pattern__option--incorrect{border-color:rgba(var(--dd-danger-rgb),.4);background:rgba(var(--dd-danger-rgb),.04);color:var(--dd-text)}.dd-lms-spot-pattern__option--incorrect:hover{color:var(--dd-text)}.dd-lms-spot-pattern__option--incorrect .dd-lms-spot-pattern__option-letter{background:rgba(var(--dd-danger-rgb),.1);color:var(--dd-danger)}.dd-lms-spot-pattern__feedback{grid-column:1 / -1;margin-top:var(--dd-space-sm);font-weight:400}.dd-lms-spot-pattern__feedback-icon{vertical-align:-.15em;margin-right:.3em}.dd-lms-spot-pattern__feedback-text{margin:0}.dd-lms-spot-pattern__feedback-text strong{font-weight:600}.dd-lms-examples__list{display:flex;flex-direction:column;gap:var(--dd-space-md)}.dd-lms-examples__card{position:relative;border-left:3px solid rgb(var(--_accent) / .5);padding:var(--dd-space-sm) var(--dd-space-md);background:#00000004;border-radius:0 var(--dd-radius-sm) var(--dd-radius-sm) 0;margin:0}.dd-lms-examples__card:nth-child(4n+1){--_accent: 255 111 76}.dd-lms-examples__card:nth-child(4n+2){--_accent: 140 100 200}.dd-lms-examples__card:nth-child(4n+3){--_accent: 74 143 106}.dd-lms-examples__card:nth-child(4n+4){--_accent: 120 150 180}.dd-lms-examples__body{display:flex;flex-direction:column;gap:var(--dd-space-sm)}@media (min-width: 481px){.dd-lms-examples__card--has-explanation .dd-lms-examples__body{flex-direction:row;align-items:stretch;gap:var(--dd-space-lg)}}.dd-lms-examples__content{display:flex;flex-direction:column;gap:var(--dd-space-sm);flex:1;min-width:0}.dd-lms-examples__explanation{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);line-height:var(--dd-lh-loose);color:var(--dd-text-muted)}.dd-lms-examples__explanation p{margin:0}@media (min-width: 481px){.dd-lms-examples__explanation{flex:0 0 46%;border-left:1px solid var(--dd-rule);padding-left:var(--dd-space-md);display:flex;align-items:center}}.dd-lms-examples__tags{display:flex;flex-wrap:wrap;gap:.35rem}.dd-lms-examples__tag{font-family:var(--dd-font-sans);font-size:.625rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:.2em .55em;border-radius:2px;color:rgb(var(--_accent) / .75);background:rgb(var(--_accent) / .1)}.dd-lms-examples__label{font-family:var(--dd-font-sans);font-size:var(--dd-fs-xs);font-weight:500;letter-spacing:.03em;color:var(--dd-text-muted)}.dd-lms-examples__sentence-row{display:flex;align-items:baseline;gap:var(--dd-space-sm);flex-wrap:wrap}.dd-lms-examples__sentence{font-family:var(--dd-font-serif);font-size:clamp(1.3rem,3vw,1.65rem);font-weight:400;line-height:var(--dd-lh-normal);letter-spacing:-.01em;color:var(--dd-text);margin:0}.dd-lms-examples__sentence mark{background:transparent;color:inherit;border-bottom:2px solid rgb(var(--_accent));border-radius:0;padding:0}.dd-lms-examples__ending{display:inline-flex;align-items:center;font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);font-weight:600;color:var(--dd-product-courses);background:color-mix(in srgb,var(--dd-product-courses) 8%,transparent);padding:.15em .5em;border-radius:3px;white-space:nowrap;flex-shrink:0}.dd-lms-examples__translation-wrap{display:flex;flex-wrap:nowrap;align-items:center;gap:0 var(--dd-space-sm);align-self:flex-start}.dd-lms-examples__reveal-btn{display:inline-flex;align-items:center;flex-shrink:0;gap:.35em;font-family:var(--dd-font-sans);font-size:var(--dd-fs-xs);font-weight:500;padding:.3em .7em;border:1px solid var(--dd-rule);border-radius:var(--dd-radius-sm);background:transparent;color:var(--dd-text-muted);cursor:pointer;outline:none;-webkit-tap-highlight-color:transparent;transition:border-color .2s ease,background .2s ease,transform .15s ease}.dd-lms-examples__reveal-btn svg{display:inline-block;width:14px;height:14px;max-width:none;flex-shrink:0}.dd-lms-examples__reveal-btn:hover{border-color:#0003;background:#00000005;color:var(--dd-text-muted)}.dd-lms-examples__reveal-btn:focus,.dd-lms-examples__reveal-btn:focus-visible{outline:none;border-color:var(--dd-rule);background:transparent;color:var(--dd-text-muted)}.dd-lms-examples__reveal-btn:active{transform:scale(.98);color:var(--dd-text-muted)}.dd-lms-examples__reveal-btn[aria-expanded=true]{border-color:#00000026;background:#00000005}.dd-lms-examples__translation{flex:1;min-width:0;font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);font-style:italic;line-height:1.3;color:var(--dd-text-muted);margin:0;padding:0}.dd-lms-examples__translation[hidden]{display:none}@media (max-width: 480px){.dd-lms-examples__card{padding-left:calc(var(--dd-space-md) + 2rem)}.dd-lms-examples__number{left:var(--dd-space-sm);font-size:1.2rem}}.dd-lms-checkpoint{background:var(--dd-bg);border-radius:var(--dd-radius-md);box-shadow:var(--dd-elevation-1);padding:var(--dd-space-xl) var(--dd-space-lg);text-align:center;max-width:640px;margin-inline:auto}.dd-lms-checkpoint__label{display:inline-flex;align-items:center;gap:.4em;padding:.35em .85em;background:var(--dd-product-courses);color:#fff;font-family:var(--dd-font-sans);font-size:var(--dd-fs-xs);font-weight:700;letter-spacing:.06em;text-transform:uppercase;line-height:1;border-radius:var(--dd-radius-xl);margin-bottom:var(--dd-space-md)}.dd-lms-checkpoint__label-flag{width:10px;height:13px;flex-shrink:0}.dd-lms-checkpoint__prompt{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);line-height:var(--dd-lh-loose);color:var(--dd-text-muted);margin-bottom:var(--dd-space-sm)}.dd-lms-checkpoint__sentence{font-family:var(--dd-font-serif);font-size:clamp(1.2rem,2.5vw,1.5rem);font-weight:400;letter-spacing:-.01em;line-height:var(--dd-lh-normal);color:var(--dd-text);margin-bottom:var(--dd-space-lg)}.dd-lms-checkpoint__options{display:flex;flex-wrap:wrap;justify-content:center;gap:var(--dd-space-xs)}.dd-lms-checkpoint__option{padding:.45em 1em;border:1.5px solid color-mix(in srgb,var(--dd-product-courses) 25%,transparent);border-radius:var(--dd-radius-xl);background:var(--dd-bg);cursor:pointer;transition:border-color .2s ease,background .2s ease,box-shadow .2s ease,transform .15s ease;font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);color:var(--dd-text);outline:none;-webkit-tap-highlight-color:transparent}.dd-lms-checkpoint__option:hover{border-color:color-mix(in srgb,var(--dd-product-courses) 50%,transparent);background:color-mix(in srgb,var(--dd-product-courses) 4%,var(--dd-bg));box-shadow:0 1px 4px #0000000a}.dd-lms-checkpoint__option:focus,.dd-lms-checkpoint__option:focus-visible{border-color:color-mix(in srgb,var(--dd-product-courses) 55%,transparent);box-shadow:0 0 0 2px color-mix(in srgb,var(--dd-product-courses) 15%,transparent);outline:none}.dd-lms-checkpoint__option:active{transform:scale(.97);background:color-mix(in srgb,var(--dd-product-courses) 6%,var(--dd-bg))}.dd-lms-checkpoint__option-text{font-weight:500}.dd-lms-checkpoint.is-answered .dd-lms-checkpoint__option{cursor:default;opacity:.5;transform:none;box-shadow:none}.dd-lms-checkpoint.is-answered .dd-lms-checkpoint__option:hover{border-color:color-mix(in srgb,var(--dd-product-courses) 25%,transparent);background:var(--dd-bg);box-shadow:none}.dd-lms-checkpoint.is-answered .dd-lms-checkpoint__option--correct,.dd-lms-checkpoint.is-answered .dd-lms-checkpoint__option--incorrect{opacity:1}.dd-lms-checkpoint__option--selected{border-color:color-mix(in srgb,var(--dd-product-courses) 60%,transparent);background:color-mix(in srgb,var(--dd-product-courses) 6%,var(--dd-bg))}.dd-lms-checkpoint__option--correct{border-color:var(--dd-success);background:rgba(var(--dd-success-rgb),.06)}.dd-lms-checkpoint__option--incorrect{border-color:rgba(var(--dd-danger-rgb),.4);background:rgba(var(--dd-danger-rgb),.04)}.dd-lms-checkpoint__feedback{display:inline-flex;align-items:center;gap:var(--dd-space-sm);margin-top:var(--dd-space-sm);text-align:left}.dd-lms-checkpoint__feedback--success .dd-lms-checkpoint__feedback-icon{color:var(--dd-success)}.dd-lms-checkpoint__feedback--error .dd-lms-checkpoint__feedback-icon{color:var(--dd-danger)}.dd-lms-checkpoint__feedback-icon{flex-shrink:0}.dd-lms-checkpoint__feedback-text{margin:0;color:var(--dd-text)}.dd-lms-checkpoint__feedback-text strong{font-weight:600}.dd-lms-checkpoint__feedback-text em{font-style:italic}@media (max-width: 480px){.dd-lms-checkpoint{padding:var(--dd-space-lg) var(--dd-space-md)}}.dd-lms-tip{border-left:2px solid var(--dd-primary);padding:var(--dd-space-md) var(--dd-space-lg)}.dd-lms-tip__heading{font-family:var(--dd-font-sans);font-size:var(--dd-fs-xs);font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--dd-label);margin-bottom:var(--dd-space-xs)}.dd-lms-tip__body{font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);line-height:var(--dd-lh-loose);color:var(--dd-text)}.dd-lms-multiple-choice__score[hidden]{display:none}.dd-lms-multiple-choice__items{margin-bottom:var(--dd-space-md)}.dd-lms-multiple-choice__item{margin-bottom:var(--dd-space-lg)}.dd-lms-multiple-choice__item:last-child{margin-bottom:0}.dd-lms-multiple-choice__prompt{font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);color:var(--dd-text);margin-bottom:var(--dd-space-sm)}.dd-lms-multiple-choice__sentence{font-family:var(--dd-font-serif);font-size:clamp(1.1rem,2.5vw,1.35rem);line-height:var(--dd-lh-loose);color:var(--dd-text);margin-bottom:var(--dd-space-sm)}.dd-lms-multiple-choice__options{display:flex;flex-direction:column;gap:var(--dd-space-sm)}.dd-lms-multiple-choice__option{display:flex;align-items:center;gap:var(--dd-space-sm);padding:var(--dd-space-sm) var(--dd-space-md);border:1.5px solid var(--dd-rule);border-radius:var(--dd-radius-sm);background:transparent;font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);color:var(--dd-text);cursor:pointer;transition:border-color .2s ease,background .2s ease}.dd-lms-multiple-choice__option:hover:not(:disabled){border-color:var(--dd-product-courses);background:color-mix(in srgb,var(--dd-product-courses) 4%,transparent)}.dd-lms-multiple-choice__option.is-selected{border-color:var(--dd-product-courses);background:color-mix(in srgb,var(--dd-product-courses) 8%,transparent)}.dd-lms-multiple-choice__option.is-correct{border-color:var(--dd-success);background:rgba(var(--dd-success-rgb),.06);color:var(--dd-success)}.dd-lms-multiple-choice__option.is-incorrect{border-color:var(--dd-danger);background:rgba(var(--dd-danger-rgb),.04);color:var(--dd-danger)}.dd-lms-multiple-choice__option.is-missed{border-color:var(--dd-success);background:rgba(var(--dd-success-rgb),.04);color:var(--dd-success);opacity:.7}.dd-lms-multiple-choice__option:disabled{cursor:default}.dd-lms-multiple-choice__option-letter{display:flex;align-items:center;justify-content:center;width:1.6rem;height:1.6rem;border-radius:50%;background:color-mix(in srgb,var(--dd-product-courses) 8%,transparent);color:var(--dd-product-courses);font-size:var(--dd-fs-sm);font-weight:600;flex-shrink:0}.dd-lms-multiple-choice__explanation{display:none;margin-top:var(--dd-space-xs);padding-left:calc(1.6rem + var(--dd-space-sm));font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);color:var(--dd-text-muted);line-height:var(--dd-lh-loose);animation:dd-fade-in .25s ease}.is-checked .dd-lms-multiple-choice__explanation{display:block}.dd-lms-multiple-choice__item-check{margin-top:var(--dd-space-md)}.dd-lms-multiple-choice__toolbar{display:flex;align-items:center;gap:var(--dd-space-sm);margin-bottom:var(--dd-space-md)}.dd-lms-multiple-choice__progress{margin-right:auto}.dd-lms-multiple-choice__score{margin-bottom:var(--dd-space-sm)}.dd-lms-multiple-choice__feedback{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);line-height:var(--dd-lh-loose);color:var(--dd-text-muted);padding:var(--dd-space-sm) 0}.dd-lms-multiple-choice__feedback p{margin:0}.dd-lms-matching__score[hidden]{display:none}.dd-lms-matching__board{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:var(--dd-space-sm) var(--dd-space-lg);margin-bottom:var(--dd-space-md)}.dd-lms-matching__lines{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;pointer-events:none;z-index:1}.dd-lms-matching__line{stroke-width:2;stroke-linecap:round;fill:none;stroke:var(--dd-product-courses);opacity:.5;transition:stroke .2s ease,opacity .2s ease}.dd-lms-matching__line.is-correct{stroke:var(--dd-success);opacity:.8}.dd-lms-matching__line.is-incorrect{stroke:var(--dd-danger);opacity:.8}.dd-lms-matching__item{position:relative;z-index:2;display:flex;align-items:center;justify-content:center;box-sizing:border-box;min-height:2.8rem;padding:var(--dd-space-xs) var(--dd-space-md);border:1.5px solid var(--dd-rule);border-radius:var(--dd-radius-sm);background:var(--dd-surface);font-family:var(--dd-font-serif);font-size:var(--dd-fs-lg);color:var(--dd-text);cursor:pointer;text-align:center;transition:border-color .2s ease,background .2s ease}.dd-lms-matching__item:hover:not(:disabled):not(.is-paired){border-color:var(--dd-product-courses);background:color-mix(in srgb,var(--dd-product-courses) 4%,transparent)}.dd-lms-matching__item--right{background:color-mix(in srgb,var(--dd-product-courses) 4%,transparent);font-family:var(--dd-font-sans);font-size:var(--dd-fs-md)}.dd-lms-matching__item.is-active{border-color:var(--dd-product-courses);background:color-mix(in srgb,var(--dd-product-courses) 10%,transparent);color:var(--dd-product-courses)}.dd-lms-matching__item.is-paired{border-color:color-mix(in srgb,var(--dd-product-courses) 40%,transparent);background:color-mix(in srgb,var(--dd-product-courses) 6%,transparent);opacity:.75}.dd-lms-matching__item.is-correct{border-color:var(--dd-success);background:rgba(var(--dd-success-rgb),.06);color:var(--dd-success);opacity:1}.dd-lms-matching__item.is-incorrect{border-color:var(--dd-danger);background:rgba(var(--dd-danger-rgb),.04);color:var(--dd-danger);opacity:1}.dd-lms-matching__item:disabled{cursor:default}@media (max-width: 480px){.dd-lms-matching__board{grid-template-columns:1fr}.dd-lms-matching__item--right{order:1}.dd-lms-matching__lines{display:none}}.dd-lms-matching__toolbar{display:flex;align-items:center;gap:var(--dd-space-sm);margin-bottom:var(--dd-space-md)}.dd-lms-matching__progress{margin-right:auto}.dd-lms-matching__score{margin-bottom:var(--dd-space-sm)}.dd-lms-matching__feedback{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);line-height:var(--dd-lh-loose);color:var(--dd-text-muted);padding:var(--dd-space-sm) 0}.dd-lms-matching__feedback p{margin:0}.dd-lms-true-false__score[hidden]{display:none}.dd-lms-true-false__items{display:flex;flex-direction:column;gap:var(--dd-space-md);margin-bottom:var(--dd-space-md)}.dd-lms-true-false__item{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--dd-space-md);padding:var(--dd-space-md) 0;border-bottom:1px solid var(--dd-rule)}.dd-lms-true-false__item:last-child{border-bottom:none}.dd-lms-true-false__content{flex:1}.dd-lms-true-false__statement{font-family:var(--dd-font-serif);font-size:clamp(1.1rem,2.5vw,1.35rem);line-height:var(--dd-lh-loose);color:var(--dd-text)}.dd-lms-true-false__correction{margin-top:var(--dd-space-sm);font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);color:var(--dd-success);line-height:var(--dd-lh-loose);animation:dd-fade-in .25s ease}.dd-lms-true-false__choices{display:flex;gap:var(--dd-space-xs);flex-shrink:0;padding-top:.15em}.dd-lms-true-false__choice{padding:.4em 1em;border:1.5px solid var(--dd-rule);border-radius:var(--dd-radius-sm);background:transparent;font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);font-weight:500;color:var(--dd-text-muted);cursor:pointer;transition:border-color .2s ease,background .2s ease,color .2s ease}.dd-lms-true-false__choice:hover:not(:disabled){border-color:var(--dd-product-courses);color:var(--dd-product-courses)}.dd-lms-true-false__choice.is-selected{border-color:var(--dd-product-courses);background:color-mix(in srgb,var(--dd-product-courses) 8%,transparent);color:var(--dd-product-courses)}.dd-lms-true-false__choice.is-correct{border-color:var(--dd-success);background:rgba(var(--dd-success-rgb),.06);color:var(--dd-success)}.dd-lms-true-false__choice.is-incorrect{border-color:var(--dd-danger);background:rgba(var(--dd-danger-rgb),.04);color:var(--dd-danger)}.dd-lms-true-false__choice:disabled{cursor:default}@media (max-width: 480px){.dd-lms-true-false__item{flex-direction:column;align-items:flex-start}.dd-lms-true-false__choices{padding-top:0}}.dd-lms-true-false__toolbar{display:flex;align-items:center;gap:var(--dd-space-sm);margin-bottom:var(--dd-space-md)}.dd-lms-true-false__progress{margin-right:auto}.dd-lms-true-false__score{margin-bottom:var(--dd-space-sm)}.dd-lms-true-false__feedback{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);line-height:var(--dd-lh-loose);color:var(--dd-text-muted);padding:var(--dd-space-sm) 0}.dd-lms-true-false__feedback p{margin:0}.dd-lms-fill-blanks__body{display:flex;flex-direction:column;gap:var(--dd-space-xs);margin-bottom:var(--dd-space-md)}.dd-lms-fill-blanks__body--paragraph{display:block}.dd-lms-fill-blanks__line{font-family:var(--dd-font-serif);font-size:var(--dd-fs-lg);line-height:2.2;color:var(--dd-text)}.dd-lms-fill-blanks .dd-lms-fill-blanks__input{-moz-appearance:none;appearance:none;-webkit-appearance:none;display:inline-block;box-sizing:content-box;font-family:var(--dd-font-serif);font-size:inherit;line-height:1.2;height:auto;vertical-align:baseline;border:1px solid var(--dd-rule);border-radius:var(--dd-radius-sm);background:var(--dd-bg);padding:.1em .3em;margin:0 .1em;min-width:3em;min-height:0;text-align:left;outline:none;color:var(--dd-text);transition:border-color .2s ease,box-shadow .2s ease}.dd-lms-fill-blanks .dd-lms-fill-blanks__input:focus,.dd-lms-fill-blanks .dd-lms-fill-blanks__input:focus-visible{border-color:var(--dd-product-courses);box-shadow:0 0 0 3px color-mix(in srgb,var(--dd-product-courses) 25%,transparent);outline:none}.dd-lms-fill-blanks .dd-lms-fill-blanks__input::-moz-placeholder{color:#0003}.dd-lms-fill-blanks .dd-lms-fill-blanks__input::placeholder{color:#0003}.dd-lms-fill-blanks .dd-lms-fill-blanks__input--correct{border-color:var(--dd-success);color:var(--dd-success);font-weight:600;background:rgba(var(--dd-success-rgb),.04)}.dd-lms-fill-blanks .dd-lms-fill-blanks__input--incorrect{border-color:var(--dd-danger);color:var(--dd-danger);text-decoration:line-through}.dd-lms-fill-blanks .dd-lms-fill-blanks__input--flash{animation:dd-fill-blanks-flash .5s ease}.dd-lms-fill-blanks .dd-lms-fill-blanks__input--shake{animation:dd-fill-blanks-shake .3s ease}.dd-lms-fill-blanks__correction{font-family:var(--dd-font-serif);font-size:inherit;font-weight:700;color:var(--dd-primary);white-space:nowrap}.dd-lms-fill-blanks__progress{display:block;margin-bottom:var(--dd-space-sm)}.dd-lms-fill-blanks__toolbar{display:flex;flex-wrap:wrap;gap:var(--dd-space-sm);margin-bottom:var(--dd-space-md)}@media (max-width: 480px){.dd-lms-fill-blanks__line{font-size:var(--dd-fs-md);line-height:2.4}}.dd-lms-mark-words__passage{display:flex;flex-wrap:wrap;gap:.15em .25em;align-items:baseline;font-family:var(--dd-font-serif);font-size:clamp(1rem,2vw,1.15rem);line-height:1.8;margin-bottom:var(--dd-space-md)}.dd-lms-mark-words.is-checked .dd-lms-mark-words__passage{pointer-events:none}.dd-lms-mark-words__word{display:inline;font:inherit;padding:.1em .2em;margin:0;border:none;border-radius:0;background:transparent;color:inherit;cursor:pointer;outline:none;border-bottom:2px solid transparent;touch-action:manipulation;-webkit-user-select:none;-moz-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;transition:background .15s ease,border-color .15s ease}.dd-lms-mark-words__word:hover{background:#0000000a;border-bottom-color:var(--dd-text)}.dd-lms-mark-words__word:focus,.dd-lms-mark-words__word:focus-visible{outline:none}.dd-lms-mark-words__word:active{transform:scale(.98)}.dd-lms-mark-words__word.is-selected{background:color-mix(in srgb,var(--dd-product-courses) 10%,transparent);border-bottom-color:color-mix(in srgb,var(--dd-product-courses) 45%,transparent)}.dd-lms-mark-words__word.is-selected:hover,.dd-lms-mark-words__word.is-selected:focus,.dd-lms-mark-words__word.is-selected:focus-visible{background:color-mix(in srgb,var(--dd-product-courses) 10%,transparent);border-bottom-color:color-mix(in srgb,var(--dd-product-courses) 45%,transparent)}.dd-lms-mark-words__word.is-correct{background:rgba(var(--dd-success-rgb),.12);border-bottom:2px solid var(--dd-success)}.dd-lms-mark-words__word.is-incorrect{background:rgba(var(--dd-danger-rgb),.1);border-bottom:2px solid var(--dd-danger)}.dd-lms-mark-words__word.is-missed{border-bottom:2px dashed var(--dd-success)}.dd-lms-mark-words__punct{pointer-events:none;-webkit-user-select:none;-moz-user-select:none;user-select:none;font:inherit}.dd-lms-mark-words__toolbar{display:flex;align-items:center;gap:var(--dd-space-sm);margin-bottom:var(--dd-space-md)}.dd-lms-mark-words__progress{margin-right:auto}.dd-lms-mark-words__score{margin-bottom:var(--dd-space-sm)}.dd-lms-mark-words__feedback{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);line-height:var(--dd-lh-loose);color:var(--dd-text-muted);padding:var(--dd-space-sm) 0}.dd-lms-mark-words__feedback p{margin:0}.dd-lms-sort-blocks__icon svg{transform:rotate(90deg)}.dd-lms-sort-blocks__list{display:flex;flex-wrap:wrap;gap:var(--dd-space-sm);align-items:center;margin-bottom:var(--dd-space-md);min-height:3rem}.dd-lms-sort-blocks__block{display:inline-flex;align-items:center;padding:.45em .9em;font-family:var(--dd-font-serif);font-size:clamp(1rem,2vw,1.15rem);font-weight:500;color:var(--dd-text);background:var(--dd-bg);border:1.5px solid var(--dd-rule);border-radius:var(--dd-radius-sm);cursor:grab;box-shadow:0 1px 3px #00000014;touch-action:manipulation;-webkit-user-select:none;-moz-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;transition:box-shadow .2s ease,border-color .2s ease,opacity .2s ease,transform .15s ease,background .15s ease}.dd-lms-sort-blocks__block:hover{border-color:var(--dd-product-courses);box-shadow:0 4px 12px #0000001a;transform:translateY(-2px)}.dd-lms-sort-blocks__block:focus,.dd-lms-sort-blocks__block:focus-visible{outline:none;border-color:var(--dd-product-courses);background:var(--dd-bg);color:var(--dd-text)}.dd-lms-sort-blocks__block:active{cursor:grabbing;transform:translateY(-1px) scale(.97)}.dd-lms-sort-blocks__block.is-dragging{opacity:.4;cursor:grabbing}.dd-lms-sort-blocks__block.is-dragover-before{box-shadow:-3px 0 0 var(--dd-product-courses)}.dd-lms-sort-blocks__block.is-dragover-after{box-shadow:3px 0 0 var(--dd-product-courses)}.dd-lms-sort-blocks__block.is-correct{border-color:var(--dd-success);background:rgba(var(--dd-success-rgb),.06);color:var(--dd-text)}.dd-lms-sort-blocks__block.is-selected{border-color:var(--dd-product-courses);background:color-mix(in srgb,var(--dd-product-courses) 8%,transparent);box-shadow:0 0 0 3px color-mix(in srgb,var(--dd-product-courses) 15%,transparent);transform:scale(1.05)}.dd-lms-sort-blocks__block.is-incorrect{border-color:var(--dd-danger);background:rgba(var(--dd-danger-rgb),.06)}.dd-lms-sort-blocks.is-checked .dd-lms-sort-blocks__block{cursor:default}.dd-lms-sort-blocks__toolbar{display:flex;align-items:center;gap:var(--dd-space-sm);margin-bottom:var(--dd-space-md)}.dd-lms-sort-blocks__progress{margin-right:auto}.dd-lms-sort-blocks__score{margin-bottom:var(--dd-space-sm)}.dd-lms-sort-blocks__feedback{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);line-height:var(--dd-lh-loose);color:var(--dd-text-muted);padding:var(--dd-space-sm) 0}.dd-lms-sort-blocks__feedback p{margin:0}.dd-lms-drag-words__items{display:flex;flex-direction:column;gap:var(--dd-space-lg);margin-bottom:var(--dd-space-md)}.dd-lms-drag-words__item{display:flex;flex-direction:column;gap:var(--dd-space-sm)}.dd-lms-drag-words__sentence{font-family:var(--dd-font-serif);font-size:clamp(1.1rem,2.2vw,1.3rem);line-height:2;color:var(--dd-text);margin:0}.dd-lms-drag-words__dropzone{display:inline-block;min-width:5em;padding:.35em .6em;margin:-.25em .15em;text-align:center;border-bottom:2px dashed rgba(29,53,87,.4);font-family:var(--dd-font-sans);font-size:.95em;font-weight:500;color:#1d3557;vertical-align:baseline;transition:border-color .2s ease,background .2s ease}.dd-lms-drag-words__dropzone:empty:before{content:" "}.dd-lms-drag-words__dropzone.is-dragover{border-bottom-color:#1d3557;background:#1d35570f}.dd-lms-drag-words__dropzone.is-filled{border-bottom:2px solid #1D3557;cursor:pointer}.dd-lms-drag-words__dropzone.is-correct{border-bottom-color:var(--dd-success);background:rgba(var(--dd-success-rgb),.08);color:var(--dd-text)}.dd-lms-drag-words__dropzone.is-incorrect{border-bottom-color:var(--dd-danger);background:rgba(var(--dd-danger-rgb),.06);animation:dd-shake .5s ease}.dd-lms-drag-words__pool{display:flex;flex-wrap:wrap;gap:var(--dd-space-sm)}.dd-lms-drag-words__chip{padding:var(--dd-space-sm) var(--dd-space-md);border:1.5px solid var(--dd-rule);border-radius:var(--dd-radius-sm);background:var(--dd-bg);font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);font-weight:500;color:var(--dd-text);cursor:grab;outline:none;-webkit-tap-highlight-color:transparent;box-shadow:0 1px 3px #0000000f;touch-action:manipulation;-webkit-user-select:none;-moz-user-select:none;user-select:none;transition:border-color .2s ease,background .2s ease,color .2s ease,box-shadow .2s ease,transform .15s ease,opacity .2s ease}.dd-lms-drag-words__chip:hover{border-color:#1d3557;background:#1d35570a;color:#1d3557;box-shadow:0 4px 12px #0000001a;transform:translateY(-2px)}.dd-lms-drag-words__chip:focus,.dd-lms-drag-words__chip:focus-visible{outline:none;border-color:#1d3557;background:var(--dd-bg);color:var(--dd-text)}.dd-lms-drag-words__chip:active{cursor:grabbing;transform:translateY(-1px) scale(.97);background:#1d35570a;color:#1d3557}.dd-lms-drag-words__chip.is-selected{border-color:#1d3557;background:#1d355714;color:#1d3557;box-shadow:0 0 0 3px #1d35571f;transform:scale(1.05)}.dd-lms-drag-words__chip.is-dragging{opacity:.5}.dd-lms-drag-words__chip.is-placed{opacity:.35;pointer-events:none;border-style:dashed}.dd-lms-drag-words.is-checked .dd-lms-drag-words__chip:not(.is-placed){opacity:.4}.dd-lms-drag-words__toolbar{display:flex;align-items:center;gap:var(--dd-space-sm);margin-bottom:var(--dd-space-md)}.dd-lms-drag-words__progress{margin-right:auto}.dd-lms-drag-words__score{margin-bottom:var(--dd-space-sm)}.dd-lms-drag-words__feedback{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);line-height:var(--dd-lh-loose);color:var(--dd-text-muted);padding:var(--dd-space-sm) 0}.dd-lms-drag-words__feedback p{margin:0}.dd-lms-collocation-board__instruction{margin-bottom:var(--dd-space-sm)}.dd-lms-collocation-board__pool-row{display:flex;align-items:flex-start;gap:var(--dd-space-md)}.dd-lms-collocation-board__toolbar{display:flex;flex-direction:column;align-items:flex-start;gap:var(--dd-space-sm);flex-shrink:0;padding-top:var(--dd-space-xs)}.dd-lms-collocation-board__board{display:flex;flex-direction:column;gap:var(--dd-space-md)}.dd-lms-collocation-board__row{display:flex;align-items:center;gap:var(--dd-space-sm)}.dd-lms-collocation-board__phrase{font-family:var(--dd-font-serif);font-size:var(--dd-fs-lg);font-weight:400;line-height:2.2;color:var(--dd-text);white-space:nowrap}.dd-lms-collocation-board__dropzone{min-height:2.6rem;min-width:140px;padding:0 var(--dd-space-md);border:1.5px solid var(--dd-rule);border-radius:var(--dd-radius-md);background:#00000005;display:flex;align-items:center;justify-content:center;font-family:var(--dd-font-serif);font-size:var(--dd-fs-md);font-weight:500;color:var(--dd-text);transition:border-color .2s ease,background .2s ease}.dd-lms-collocation-board__dropzone.is-dragover{border-color:var(--dd-product-courses);background:color-mix(in srgb,var(--dd-product-courses) 6%,transparent)}.dd-lms-collocation-board__dropzone.is-correct{border-color:var(--dd-success);background:rgba(var(--dd-success-rgb),.06);color:var(--dd-text)}.dd-lms-collocation-board__dropzone.is-filled{border-color:var(--dd-product-courses);background:color-mix(in srgb,var(--dd-product-courses) 4%,transparent);cursor:pointer}.dd-lms-collocation-board__dropzone.is-incorrect{animation:dd-shake .5s ease;border-color:rgba(var(--dd-danger-rgb),.4)}.dd-lms-collocation-board__pool{display:flex;flex-direction:row;flex-wrap:wrap;justify-content:center;gap:var(--dd-space-sm)}.dd-lms-collocation-board__tile{padding:var(--dd-space-sm) var(--dd-space-md);border:1.5px solid var(--dd-rule);border-radius:var(--dd-radius-sm);background:var(--dd-bg);font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);font-weight:500;color:var(--dd-text);cursor:grab;outline:none;-webkit-tap-highlight-color:transparent;box-shadow:0 1px 3px #0000000f;transition:border-color .2s ease,background .2s ease,color .2s ease,box-shadow .2s ease,transform .15s ease,opacity .2s ease;-webkit-user-select:none;-moz-user-select:none;user-select:none}.dd-lms-collocation-board__tile:hover{border-color:var(--dd-product-courses);background:color-mix(in srgb,var(--dd-product-courses) 4%,transparent);color:var(--dd-product-courses);box-shadow:0 4px 12px #0000001a;transform:translateY(-2px)}.dd-lms-collocation-board__tile:focus,.dd-lms-collocation-board__tile:focus-visible{outline:none;border-color:var(--dd-product-courses);background:var(--dd-bg);color:var(--dd-text)}.dd-lms-collocation-board__tile:active{cursor:grabbing;transform:translateY(-1px) scale(.97);background:color-mix(in srgb,var(--dd-product-courses) 4%,transparent);color:var(--dd-product-courses)}.dd-lms-collocation-board__tile.is-selected{border-color:var(--dd-product-courses);background:color-mix(in srgb,var(--dd-product-courses) 6%,transparent);color:var(--dd-product-courses);box-shadow:0 0 0 3px color-mix(in srgb,var(--dd-product-courses) 12%,transparent)}.dd-lms-collocation-board__tile.is-selected:hover{background:color-mix(in srgb,var(--dd-product-courses) 10%,transparent);box-shadow:0 4px 12px #0000001a}.dd-lms-collocation-board__tile.is-dragging{opacity:.5}.dd-lms-collocation-board__tile.is-placed{opacity:.45;pointer-events:none;border-style:dashed}.dd-lms-collocation-board__tile.is-matched{opacity:.4;pointer-events:none;border-color:var(--dd-success);position:relative}.dd-lms-collocation-board__tile.is-matched:after{content:"✓";position:absolute;right:6px;top:50%;transform:translateY(-50%);font-size:.85em;color:var(--dd-success)}.dd-lms-collocation-board__result{margin-top:var(--dd-space-lg);padding:var(--dd-space-sm) var(--dd-space-lg);display:flex;align-items:center;background:rgba(var(--dd-success-rgb),.1);border-left:3px solid var(--dd-success);border-radius:0;color:var(--dd-success);font-family:var(--dd-font-sans);font-size:var(--dd-fs-md);font-weight:600;line-height:var(--dd-lh-loose);animation:dd-fade-in .25s ease}.dd-lms-collocation-board__result[hidden]{display:none}.dd-lms-collocation-board__result p{margin:0}.dd-lms-collocation-board__result strong{font-weight:600}@media (max-width: 600px){.dd-lms-collocation-board__row{flex-direction:column;align-items:stretch}}.dd-lms-sentence-lab{border-top:3px solid var(--dd-accent);padding-top:var(--dd-space-xl)}.dd-lms-sentence-lab__base{background:#4a8f6a0a;border-left:3px solid rgba(74,143,106,.3);border-radius:0 var(--dd-radius-sm) var(--dd-radius-sm) 0;padding:var(--dd-space-sm) var(--dd-space-md);font-family:var(--dd-font-serif);font-size:clamp(1.15rem,2.5vw,1.35rem);font-weight:400;line-height:1.5;letter-spacing:-.01em;color:var(--dd-text);margin:0 0 var(--dd-space-md)}.dd-lms-sentence-lab__base-label{font-family:var(--dd-font-sans);font-size:var(--dd-fs-xs);font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:#4a8f6a;margin-right:.6em}.dd-lms-sentence-lab__pills{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:var(--dd-space-md)}.dd-lms-sentence-lab__pill{font-family:var(--dd-font-sans);font-size:var(--dd-fs-xs);font-weight:500;padding:.4em 1em;border:1.5px solid var(--dd-rule);border-radius:var(--dd-radius-sm);background:transparent;color:var(--dd-text-muted);cursor:pointer;outline:none;-webkit-tap-highlight-color:transparent;transition:border-color .2s ease,background .2s ease,color .2s ease,transform .15s ease}.dd-lms-sentence-lab__pill:hover{border-color:#4a8f6a66;background:#4a8f6a0a;color:#4a8f6a}.dd-lms-sentence-lab__pill:focus,.dd-lms-sentence-lab__pill:focus-visible{outline:none;border-color:#4a8f6a66;color:var(--dd-text-muted);background:transparent}.dd-lms-sentence-lab__pill:active{transform:scale(.98);color:#4a8f6a}.dd-lms-sentence-lab__pill.is-active{background:#4a8f6a;border-color:#4a8f6a;color:#fff}.dd-lms-sentence-lab__pill.is-active:hover{background:#3e7d5c;border-color:#3e7d5c;color:#fff}.dd-lms-sentence-lab__pill.is-active:focus,.dd-lms-sentence-lab__pill.is-active:focus-visible{outline:none;background:#4a8f6a;border-color:#4a8f6a;color:#fff}.dd-lms-sentence-lab__pill.is-active:active{transform:scale(.98);background:#4a8f6a;color:#fff}.dd-lms-sentence-lab__panel{display:none}.dd-lms-sentence-lab__panel.is-active{display:block}.dd-lms-sentence-lab__card{border-left:3px solid #4a8f6a;border-radius:0 var(--dd-radius-sm) var(--dd-radius-sm) 0;overflow:hidden}.dd-lms-sentence-lab__result{background:color-mix(in srgb,var(--dd-primary) 6%,transparent);padding:var(--dd-space-sm) var(--dd-space-md);font-family:var(--dd-font-serif);font-size:clamp(1.15rem,2.5vw,1.35rem);font-weight:400;line-height:1.5;letter-spacing:-.01em;color:var(--dd-primary);margin:0}.dd-lms-sentence-lab__explanation{padding:var(--dd-space-sm) var(--dd-space-md);font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);line-height:var(--dd-lh-loose);color:var(--dd-text-muted)}.dd-lms-sentence-lab__explanation p{margin:0 0 var(--dd-space-xs)}.dd-lms-sentence-lab__explanation p:last-child{margin-bottom:0}.dd-lms-sentence-lab__explanation em{font-style:italic;color:#4a8f6a;font-weight:500}.dd-lms-sentence-lab__explanation-deep{font-size:var(--dd-fs-xs);color:var(--dd-text-muted);opacity:.8}@media (max-width: 480px){.dd-lms-sentence-lab__card{padding:var(--dd-space-sm) var(--dd-space-md)}}.dd-lms-sentence-xray{background-color:var(--dd-bg);border:1px solid var(--dd-rule);border-radius:var(--dd-radius-md);padding:var(--dd-space-lg) var(--dd-space-xl)}.dd-lms-sentence-xray__header{margin-bottom:var(--dd-space-lg)}.dd-lms-sentence-xray__icon{--_icon-color: rgb(99, 102, 241)}.dd-lms-sentence-xray__plain{text-align:center}.dd-lms-sentence-xray__sentence{font-family:var(--dd-font-serif);font-size:clamp(1.3rem,3vw,1.65rem);font-weight:400;letter-spacing:-.01em;line-height:var(--dd-lh-normal);color:var(--dd-text);margin-bottom:var(--dd-space-md)}.dd-lms-sentence-xray__scan-btn{display:inline-flex;align-items:center;gap:.4em;font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);font-weight:500;padding:.5em 1.2em;border:1.5px solid rgb(99,102,241);border-radius:var(--dd-radius-sm);background:#6366f10a;color:#6366f1;cursor:pointer;outline:none;-webkit-tap-highlight-color:transparent;transition:background .2s ease,transform .15s ease}.dd-lms-sentence-xray__scan-btn:hover{background:#6366f114}.dd-lms-sentence-xray__scan-btn:active{transform:scale(.97)}.dd-lms-sentence-xray__breakdown{display:flex;flex-wrap:wrap;gap:var(--dd-space-md);justify-content:center;padding:var(--dd-space-md) 0}.dd-lms-sentence-xray__slot{display:inline-flex;flex-direction:column;align-items:center;gap:.25em;padding:.4em .8em;border-bottom:3px solid var(--dd-rule);opacity:0;transform:translateY(8px);transition:opacity .35s ease,transform .35s ease}.dd-lms-sentence-xray.is-scanned .dd-lms-sentence-xray__slot{opacity:1;transform:translateY(0)}.dd-lms-sentence-xray.is-scanned .dd-lms-sentence-xray__slot[data-index="0"]{transition-delay:0s}.dd-lms-sentence-xray.is-scanned .dd-lms-sentence-xray__slot[data-index="1"]{transition-delay:.12s}.dd-lms-sentence-xray.is-scanned .dd-lms-sentence-xray__slot[data-index="2"]{transition-delay:.24s}.dd-lms-sentence-xray.is-scanned .dd-lms-sentence-xray__slot[data-index="3"]{transition-delay:.36s}.dd-lms-sentence-xray.is-scanned .dd-lms-sentence-xray__slot[data-index="4"]{transition-delay:.48s}.dd-lms-sentence-xray.is-scanned .dd-lms-sentence-xray__slot[data-index="5"]{transition-delay:.6s}.dd-lms-sentence-xray.is-scanned .dd-lms-sentence-xray__slot[data-index="6"]{transition-delay:.72s}.dd-lms-sentence-xray__words{font-family:var(--dd-font-serif);font-size:clamp(1.15rem,2.5vw,1.4rem);font-weight:500;color:var(--dd-text)}.dd-lms-sentence-xray__label{font-family:var(--dd-font-sans);font-size:.625rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--dd-text-muted)}.dd-lms-sentence-xray__slot--position-1{border-bottom-color:#6366f1}.dd-lms-sentence-xray__slot--position-1 .dd-lms-sentence-xray__label{color:#6366f1}.dd-lms-sentence-xray__slot--verb,.dd-lms-sentence-xray__slot--verb-end{border-bottom-color:#ea8a34}.dd-lms-sentence-xray__slot--verb .dd-lms-sentence-xray__label,.dd-lms-sentence-xray__slot--verb-end .dd-lms-sentence-xray__label{color:#ea8a34}.dd-lms-sentence-xray__slot--mittelfeld{border-bottom-color:#78716c}.dd-lms-sentence-xray__slot--mittelfeld .dd-lms-sentence-xray__label{color:#78716c}.dd-lms-sentence-xray__slot--nachfeld{border-bottom-color:#10b981}.dd-lms-sentence-xray__slot--nachfeld .dd-lms-sentence-xray__label{color:#10b981}.dd-lms-sentence-xray__slot--verb{position:relative}.dd-lms-sentence-xray__slot--verb:after{content:"";position:absolute;bottom:-10px;right:-.5em;width:calc(100% + 1em);height:2px;background:repeating-linear-gradient(90deg,rgb(234,138,52) 0,rgb(234,138,52) 4px,transparent 4px,transparent 8px);opacity:.4;pointer-events:none}.dd-lms-sentence-xray__caption{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);line-height:var(--dd-lh-loose);color:var(--dd-text-muted);text-align:center;margin-top:var(--dd-space-md);animation:dd-fade-in .4s ease .5s both}@media (max-width: 480px){.dd-lms-sentence-xray__breakdown{flex-direction:column;align-items:stretch}.dd-lms-sentence-xray__slot{flex-direction:row;justify-content:space-between}}.dd-lms-word-tree{text-align:center}.dd-lms-word-tree .dd-lms__subheading{margin-bottom:var(--dd-space-lg)}.dd-lms-word-tree__hub{display:flex;flex-direction:column;align-items:center;gap:var(--dd-space-lg)}.dd-lms-word-tree__root{display:flex;flex-direction:column;align-items:center;gap:.3em;padding:var(--dd-space-md) var(--dd-space-xl);background:var(--dd-accent);color:#fff;border-radius:var(--dd-radius-md);position:relative}.dd-lms-word-tree__root .dd-lms-audio-btn{color:#ffffffb3}.dd-lms-word-tree__root .dd-lms-audio-btn:hover{color:#fff}.dd-lms-word-tree__root-word{font-family:var(--dd-font-serif);font-size:clamp(1.4rem,3vw,1.8rem);font-weight:600}.dd-lms-word-tree__root-meaning{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);opacity:.85}.dd-lms-word-tree__branches{display:flex;flex-wrap:wrap;justify-content:center;gap:var(--dd-space-sm);max-width:600px}.dd-lms-word-tree__branch{display:flex;flex-direction:column;align-items:center;gap:.3em;padding:var(--dd-space-sm) var(--dd-space-md);border:1.5px solid var(--dd-rule);border-radius:var(--dd-radius-sm);background:var(--dd-bg);cursor:pointer;outline:none;-webkit-tap-highlight-color:transparent;transition:border-color .2s ease,box-shadow .2s ease;min-width:120px;position:relative}.dd-lms-word-tree__branch:hover{border-color:color-mix(in srgb,var(--dd-accent) 30%,transparent);background:color-mix(in srgb,var(--dd-accent) 4%,transparent)}.dd-lms-word-tree__branch.is-expanded{border-color:var(--dd-accent);background:color-mix(in srgb,var(--dd-accent) 6%,transparent);box-shadow:0 2px 8px #ff6f4c1a}.dd-lms-word-tree__connector{position:absolute;top:-.75rem;left:50%;transform:translate(-50%);width:2px;height:.75rem;background:var(--dd-rule)}.dd-lms-word-tree__prefix{display:inline-block;font-family:var(--dd-font-sans);font-size:.625rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:.15em .45em;border-radius:2px;background:#ff6f4c14;color:var(--dd-accent)}.dd-lms-word-tree__branch-word{font-family:var(--dd-font-serif);font-size:clamp(1.05rem,2vw,1.2rem);font-weight:500;color:var(--dd-text)}.dd-lms-word-tree__branch-meaning{font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm);font-style:italic;color:var(--dd-text-muted);animation:dd-fade-in .25s ease}.dd-lms-word-tree__branch-audio{animation:dd-fade-in .25s ease}.dd-lms-score-summary{margin-top:var(--dd-space-xl);padding:var(--dd-space-sm) var(--dd-space-md);background:color-mix(in srgb,var(--dd-bg, #fff) 92%,var(--dd-product-courses));border-radius:var(--dd-radius-sm);border:1px solid color-mix(in srgb,var(--dd-product-courses) 12%,transparent)}.dd-lms-score-summary__bar{height:6px;background:color-mix(in srgb,var(--dd-product-courses) 15%,transparent);border-radius:3px;overflow:hidden;margin-bottom:var(--dd-space-xs)}.dd-lms-score-summary__fill{height:100%;width:0;background:var(--dd-product-courses);border-radius:3px;transition:width .4s ease}.dd-lms-score-summary--passing .dd-lms-score-summary__fill{background:var(--dd-success)}.dd-lms-score-summary__text{display:block;font-size:.8125rem;color:var(--dd-text-muted);text-align:center}.dd-lms-gate-message{margin-top:var(--dd-space-xs);font-size:.8125rem;color:var(--dd-text-muted);font-style:italic;text-align:center}@keyframes dd-fade-in{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes dd-shake{0%,to{transform:translate(0)}15%{transform:translate(-6px)}30%{transform:translate(5px)}45%{transform:translate(-4px)}60%{transform:translate(3px)}75%{transform:translate(-2px)}}@keyframes dd-pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes dd-slide-up{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}@keyframes dd-scale-in{0%{transform:scale(.8);opacity:.5}to{transform:scale(1);opacity:1}}@keyframes dd-fill-blanks-flash{0%{box-shadow:0 0 color-mix(in srgb,var(--dd-success) 40%,transparent)}50%{box-shadow:0 0 0 4px color-mix(in srgb,var(--dd-success) 15%,transparent)}to{box-shadow:0 0 0 0 transparent}}@keyframes dd-fill-blanks-shake{0%,to{transform:translate(0)}20%{transform:translate(-3px)}40%{transform:translate(3px)}60%{transform:translate(-2px)}80%{transform:translate(2px)}}.dd-reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease;will-change:transform,opacity}.dd-reveal--visible{opacity:1;transform:translateY(0)}@media (prefers-reduced-motion: no-preference){.dd-lms-drag-words__dropzone.is-filled{animation:dd-scale-in .15s ease}}.dd-smoothnav{position:fixed;left:max(2rem,calc((100vw - var(--dd-content-w, 820px)) / 2 - 3rem));top:50%;transform:translateY(-50%);z-index:20;font-family:var(--dd-font-sans);opacity:0;transition:opacity .5s cubic-bezier(.16,1,.3,1);pointer-events:none}.dd-smoothnav--visible{opacity:1;pointer-events:auto}.dd-smoothnav__hover-zone{position:absolute;top:-30px;right:-40px;bottom:-30px;left:-30px;z-index:-1}.dd-smoothnav__lines{position:relative;z-index:2;cursor:pointer;padding-top:20px;padding-bottom:20px;display:flex;flex-direction:column;gap:18px;align-items:flex-start}.dd-smoothnav__line{position:relative;height:2px;min-height:2px;min-width:30px;border:none;padding:0;cursor:pointer;border-radius:1px;background:var(--dd-text-muted, #4A4A4A);opacity:.25;transition:width .35s cubic-bezier(.16,1,.3,1),opacity .25s ease,background .25s ease}.dd-smoothnav__line:hover{opacity:.5}.dd-smoothnav__line--hovered{background:var(--dd-product-courses)!important;opacity:1!important}.dd-smoothnav__line--active{background:var(--dd-product-courses)!important;opacity:.8!important}.dd-smoothnav__line--past{opacity:.4}.dd-smoothnav__label{position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);white-space:nowrap;font-size:var(--dd-fs-sm, 13px);font-weight:500;color:var(--dd-text, #1A1A1A);opacity:0;pointer-events:none;transition:opacity .2s ease;background:color-mix(in srgb,var(--dd-bg, #fff) 85%,transparent);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);padding:2px 8px;border-radius:4px}.dd-smoothnav__label--visible{opacity:1}.dd-lms-player .dd-smoothnav{transition:opacity .5s cubic-bezier(.16,1,.3,1),left .3s ease}.dd-sidebar-open .dd-smoothnav{left:calc(22rem + 24px)}.dd-sidebar-closed .dd-smoothnav{left:calc(24px + 2rem)}@media (max-width: 1024px){.dd-smoothnav{display:none!important}}.dd-lms-chapnav-pill{display:none}.dd-lms-chapnav-pill__progress{font-variant-numeric:tabular-nums;font-size:13px;margin-left:2px}.dd-lms-chapnav__drawer-progress{height:2px;background:color-mix(in srgb,var(--dd-product-courses) 10%,transparent);margin:0 var(--dd-space-md) var(--dd-space-sm);border-radius:1px;overflow:hidden}.dd-lms-chapnav__drawer-progress-fill{height:100%;background:var(--dd-product-courses);border-radius:1px;transition:width .5s cubic-bezier(.16,1,.3,1)}.dd-lms-chapnav{position:fixed;top:calc(var(--dd-header-h, 4.6rem) + var(--dd-space-lg));right:max(1rem,calc((100vw - var(--dd-content-w, 720px)) / 2 - var(--dd-aside-w, 220px) - 2rem));width:var(--dd-aside-w, 220px);font-family:var(--dd-font-sans);max-height:60vh;overflow-y:auto;scrollbar-width:thin;scrollbar-color:var(--dd-rule) transparent;z-index:20;box-sizing:border-box;background:color-mix(in srgb,var(--dd-bg, #fff) 92%,var(--dd-product-courses));backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid color-mix(in srgb,var(--dd-product-courses) 12%,transparent);border-radius:var(--dd-radius-md, 8px);padding:var(--dd-space-sm) var(--dd-space-sm) var(--dd-space-sm) 0;box-shadow:0 1px 3px #00000008,inset 0 1px #ffffff73,0 0 0 6px var(--dd-bg, #fff);opacity:0;transition:opacity .6s ease,width .3s ease,box-shadow .3s ease}.dd-lms-chapnav--left{opacity:1}.dd-lms-chapnav--collapsed-left{width:auto;padding:0;background:transparent;border:none;box-shadow:none;backdrop-filter:none;-webkit-backdrop-filter:none}.dd-lms-chapnav--collapsed-left:after{display:none}.dd-lms-chapnav__toggle{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:var(--dd-radius-sm, 6px);border:1px solid color-mix(in srgb,var(--dd-product-courses) 15%,transparent);background:color-mix(in srgb,var(--dd-bg, #fff) 95%,var(--dd-product-courses));color:var(--dd-product-courses);cursor:pointer;transition:background .15s ease,color .15s ease,border-color .15s ease;margin-bottom:var(--dd-space-xs);margin-left:var(--dd-space-sm)}.dd-lms-chapnav__toggle:hover{background:color-mix(in srgb,var(--dd-product-courses) 10%,var(--dd-bg, #fff));border-color:color-mix(in srgb,var(--dd-product-courses) 30%,transparent)}.dd-lms-chapnav--collapsed-left .dd-lms-chapnav__toggle{margin-left:0;box-shadow:0 2px 8px #00000014}.dd-lms-chapnav:after{content:"";position:absolute;top:0;left:0;right:0;height:1px;border-radius:var(--dd-radius-md, 8px) var(--dd-radius-md, 8px) 0 0;background:linear-gradient(90deg,transparent 8%,rgba(255,255,255,.7) 30%,rgba(255,255,255,.45) 60%,transparent 92%);pointer-events:none}.dd-lms-chapnav--visible{opacity:1}.dd-lms-chapnav:not(.dd-lms-chapnav--collapsed){box-shadow:0 4px 16px #0000000f,inset 0 1px #ffffff73,0 0 0 6px var(--dd-bg, #fff)}.dd-lms-chapnav--hidden{opacity:0;pointer-events:none}.dd-lms-chapnav__label{display:block;font-size:var(--dd-fs-xs, 12px);font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--dd-product-courses);margin-bottom:var(--dd-space-xs);padding-left:var(--dd-space-sm)}.dd-lms-chapnav__list{list-style:none;padding:0;margin:0;position:relative;font-size:var(--dd-fs-sm, 14px)}.dd-lms-chapnav__list:before{content:"";position:absolute;left:6px;top:0;width:2px;height:1.3em;background:var(--dd-product-courses);border-radius:1px;transform:translateY(var(--dd-chapnav-offset, 0));transition:transform .4s cubic-bezier(.16,1,.3,1)}.dd-lms-chapnav--anim{overflow:hidden}.dd-lms-chapnav--anim .dd-lms-chapnav__list:before{transition:none}.dd-lms-chapnav__item{position:relative}.dd-lms-chapnav--collapsed .dd-lms-chapnav__item{display:none}.dd-lms-chapnav--collapsed .dd-lms-chapnav__item--active{display:block}.dd-lms-chapnav__link{display:flex;align-items:center;gap:.5em;margin-left:6px;padding:var(--dd-space-xs) 0 var(--dd-space-xs) calc(var(--dd-space-sm) - 6px);font-size:var(--dd-fs-sm, 14px);line-height:1.4;color:var(--dd-text-muted);text-decoration:none;border-radius:var(--dd-radius-sm);transition:color var(--dd-transition-fast),background var(--dd-transition-fast)}.dd-lms-chapnav__link:hover{background:color-mix(in srgb,var(--dd-product-courses) 6%,transparent);color:var(--dd-text)}.dd-lms-chapnav__link--active{color:var(--dd-product-courses);font-weight:500}.dd-lms-chapnav__link--active:hover{color:var(--dd-product-courses)}.dd-lms-chapnav__link--past{color:var(--dd-text)}.dd-lms-chapnav__num{flex-shrink:0;width:1.4em;font-size:var(--dd-fs-xs, 12px);font-variant-numeric:tabular-nums;color:var(--dd-text-muted);text-align:right}.dd-lms-chapnav__link--active .dd-lms-chapnav__num{color:var(--dd-product-courses)}@media (max-width: 1024px){.dd-lms-chapnav{display:none}.dd-lms-chapnav.dd-lms-chapnav--drawer{display:block;position:fixed;bottom:0;left:0;right:0;top:auto;width:100%;max-height:60vh;overflow-y:auto;background:var(--dd-bg, #fff);border-radius:var(--dd-radius-lg) var(--dd-radius-lg) 0 0;box-shadow:0 -4px 24px #0000001f;padding:var(--dd-space-lg) var(--dd-space-md) var(--dd-space-xl);z-index:1500;opacity:1;transform:translateY(0)}.dd-lms-chapnav.dd-lms-chapnav--drawer .dd-lms-chapnav__item{display:block!important}.dd-lms-chapnav.dd-lms-chapnav--drawer .dd-lms-chapnav__list{overflow:visible!important}.dd-lms-chapnav-pill{display:flex;align-items:center;gap:.4em;position:fixed;bottom:var(--dd-space-md);left:50%;transform:translate(-50%) translateY(10px);z-index:1001;background:color-mix(in srgb,var(--dd-product-courses) 85%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);color:#fff;border:none;border-radius:var(--dd-radius-xl, 28px);padding:var(--dd-space-xs) var(--dd-space-md);font-family:var(--dd-font-sans);font-size:var(--dd-fs-sm, 14px);font-weight:600;box-shadow:0 4px 16px #00000026;cursor:pointer;opacity:0;pointer-events:none;transition:opacity .4s ease,transform .4s cubic-bezier(.16,1,.3,1)}.dd-lms-chapnav-pill.dd-lms-chapnav-pill--visible{opacity:1;transform:translate(-50%) translateY(0);pointer-events:auto}.dd-lms-chapnav-pill:active{opacity:.85}}.dd-lms-chapnav-scrim{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000004d;z-index:1499}.dd-lms-sources{border-top:1px solid var(--dd-rule);padding-top:var(--dd-space-md);margin-top:var(--dd-space-lg)}.dd-lms-sources__label{display:inline-flex;align-items:center;gap:6px;font-family:var(--dd-font-sans);font-size:var(--dd-fs-xs);font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--dd-text-muted);margin-bottom:var(--dd-space-xs)}.dd-lms-sources__icon{flex-shrink:0;opacity:.6}.dd-lms-sources__list{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:var(--dd-space-xs) var(--dd-space-md)}.dd-lms-sources__item{font-family:var(--dd-font-sans);font-size:var(--dd-fs-xs);line-height:var(--dd-lh-normal);color:var(--dd-text-muted)}@media (prefers-reduced-motion: reduce){.dd-lms *,.dd-lms *:before,.dd-lms *:after{animation-duration:.01ms!important;transition-duration:.01ms!important}.dd-lms-chapnav,.dd-lms-chapnav__list:before,.dd-lms-chapnav__link,.dd-lms-chapnav--drawer,.dd-lms-chapnav-pill{transition-duration:.01ms!important}}.ddp{--ddp-accent: var(--dd-accent, #B5632A);--ddp-radius: 6px;position:relative;width:100%;aspect-ratio:16 / 9;background:#000;border-radius:var(--ddp-radius);overflow:hidden;outline:none;cursor:pointer;-moz-user-select:none;user-select:none;-webkit-user-select:none}.ddp--idle{cursor:none}.ddp__video{display:block;width:100%;height:100%;-o-object-fit:contain;object-fit:contain}.ddp--visible{opacity:1;visibility:visible;transition:opacity .3s ease,visibility .3s ease}.ddp--hidden{opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease}.ddp__play-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;pointer-events:none}.ddp__play-btn{width:64px;height:64px;border-radius:50%;background:#00000080;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;transition:transform .2s ease,background .2s ease}.ddp__play-btn svg{width:28px;height:28px;margin-left:3px}.ddp:hover .ddp__play-btn{transform:scale(1.08);background:#000000a6}.ddp__spinner{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;pointer-events:none}.ddp__spinner svg{width:40px;height:40px;animation:ddp-spin .8s linear infinite}@keyframes ddp-spin{to{transform:rotate(360deg)}}.ddp__title{position:absolute;top:0;left:0;right:0;padding:1rem 1.25rem;background:linear-gradient(to bottom,rgba(0,0,0,.6) 0%,transparent 100%);color:#fff;font-family:var(--dd-font-sans, "Inter", sans-serif);font-size:14px;font-weight:500;letter-spacing:-.01em;pointer-events:none}.ddp__brand{display:none;position:absolute;top:0;right:0;padding:1rem 1.25rem;pointer-events:none;align-items:center;gap:.375rem}.ddp:fullscreen .ddp__brand{display:flex}.ddp__brand-name{font-family:var(--dd-font-serif, "Lora", serif);font-size:1.25rem;font-weight:500;letter-spacing:-.02em;color:#fffc}.ddp__brand-suffix{font-size:13px;font-weight:400;letter-spacing:.01em;color:#fff6}.ddp__controls{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(to top,rgba(0,0,0,.75) 0%,rgba(0,0,0,.35) 60%,transparent 100%);padding:2rem 0 0;cursor:default}.ddp__progress{position:relative;height:20px;display:flex;align-items:center;padding:0 1rem;cursor:pointer}.ddp__progress-track{position:relative;width:100%;height:3px;background:#fff3;border-radius:2px;transition:height .15s ease}.ddp__progress:hover .ddp__progress-track{height:5px}.ddp__progress-buffered{position:absolute;top:0;left:0;height:100%;background:#ffffff4d;border-radius:2px;pointer-events:none}.ddp__progress-fill{position:absolute;top:0;left:0;height:100%;background:var(--ddp-accent);border-radius:2px;pointer-events:none}.ddp__progress-thumb{position:absolute;top:50%;width:12px;height:12px;border-radius:50%;background:var(--ddp-accent);transform:translate(-50%,-50%) scale(0);transition:transform .15s ease;pointer-events:none}.ddp__progress:hover .ddp__progress-thumb{transform:translate(-50%,-50%) scale(1)}.ddp__progress-tooltip{position:absolute;bottom:100%;transform:translate(-50%);background:#000000d9;color:#fff;font-family:var(--dd-font-sans, "Inter", sans-serif);font-size:12px;font-weight:500;font-variant-numeric:tabular-nums;padding:3px 8px;border-radius:3px;white-space:nowrap;pointer-events:none;margin-bottom:4px}.ddp__bar{display:flex;align-items:center;justify-content:space-between;padding:.25rem .75rem .5rem;gap:.5rem}.ddp__group{display:flex;align-items:center;gap:.25rem}.ddp__btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:none;background:none;border-radius:4px;cursor:pointer;transition:background .15s ease;padding:0;flex-shrink:0}.ddp__btn svg{width:20px;height:20px}.ddp__btn:hover{background:#ffffff1f}.ddp__btn--text{width:auto;padding:0 8px;color:#fff;font-family:var(--dd-font-sans, "Inter", sans-serif);font-size:13px;font-weight:600;font-variant-numeric:tabular-nums}.ddp__volume-track{position:relative;width:64px;height:20px;display:flex;align-items:center;cursor:pointer;margin-left:.125rem}.ddp__volume-track:before{content:"";position:absolute;top:50%;left:0;right:0;height:3px;background:#fff3;border-radius:2px;transform:translateY(-50%)}.ddp__volume-fill{position:absolute;top:50%;left:0;height:3px;background:#fff;border-radius:2px;transform:translateY(-50%);pointer-events:none}.ddp__volume-thumb{position:absolute;top:50%;width:10px;height:10px;border-radius:50%;background:#fff;transform:translate(-50%,-50%) scale(0);transition:transform .15s ease;pointer-events:none}.ddp__volume-track:hover .ddp__volume-thumb{transform:translate(-50%,-50%) scale(1)}.ddp__time{color:#ffffffd9;font-family:var(--dd-font-sans, "Inter", sans-serif);font-size:13px;font-weight:500;font-variant-numeric:tabular-nums;white-space:nowrap;margin-left:.5rem;letter-spacing:.01em}.ddp__time-sep{color:#fff6;margin:0 1px}.ddp__speed-wrap{position:relative}.ddp__speed-menu{position:absolute;bottom:calc(100% + 8px);right:0;background:#141414f2;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.1);border-radius:6px;padding:4px;min-width:72px;z-index:10}.ddp__speed-option{display:block;width:100%;padding:6px 12px;border:none;background:none;color:#ffffffb3;font-family:var(--dd-font-sans, "Inter", sans-serif);font-size:13px;font-weight:500;font-variant-numeric:tabular-nums;text-align:center;border-radius:4px;cursor:pointer;transition:background .1s ease,color .1s ease}.ddp__speed-option:hover{background:#ffffff1a;color:#fff}.ddp__speed-option--active{color:var(--ddp-accent);font-weight:700}@media (max-width: 640px){.ddp__play-btn{width:52px;height:52px}.ddp__play-btn svg{width:22px;height:22px}.ddp__bar{padding:.125rem .5rem .375rem}.ddp__btn{width:32px;height:32px}.ddp__btn svg{width:18px;height:18px}.ddp__volume-track{width:48px}.ddp__time{font-size:12px}}.ddp:fullscreen{border-radius:0}.ddp:fullscreen .ddp__bar{padding:.375rem 1.25rem .75rem}.ddp:fullscreen .ddp__progress{padding:0 1.25rem}.ddp:fullscreen .ddp__title{padding:1.25rem 1.5rem;font-size:16px}