@import "https://unpkg.com/boxicons@2.1.4/css/boxicons.min.css";
@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/fef07dbb0973bf53-s.00az9qtie3ho1.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/8a480f0b521d4e75-s.3j-a226dh71aj.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/53b9e256198e5412-s.2gwoz23eiro2t.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/7178b3e590c64307-s.0i3h3th1vs4m7.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/caa3a2e1cccd8315-s.p.0zr6hhvz-h9nw.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Geist Fallback;src:local(Arial);ascent-override:95.94%;descent-override:28.16%;line-gap-override:0.0%;size-adjust:104.76%}.geist_a71539c9-module__T19VSG__className{font-family:Geist,Geist Fallback;font-style:normal}.geist_a71539c9-module__T19VSG__variable{--font-geist-sans:"Geist", "Geist Fallback"}
@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial;--tw-space-y-reverse:0;--tw-border-style:solid;--tw-leading:initial;--tw-font-weight:initial;--tw-tracking:initial;--tw-shadow:0 0 #0000;--tw-shadow-color:initial;--tw-shadow-alpha:100%;--tw-inset-shadow:0 0 #0000;--tw-inset-shadow-color:initial;--tw-inset-shadow-alpha:100%;--tw-ring-color:initial;--tw-ring-shadow:0 0 #0000;--tw-inset-ring-color:initial;--tw-inset-ring-shadow:0 0 #0000;--tw-ring-inset:initial;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial;--tw-translate-x:0;--tw-translate-y:0;--tw-translate-z:0}}}@layer theme{:root,:host{--spacing:.25rem;--container-7xl:80rem;--text-xs:.75rem;--text-xs--line-height:calc(1 / .75);--text-sm:.875rem;--text-sm--line-height:calc(1.25 / .875);--text-lg:1.125rem;--text-lg--line-height:calc(1.75 / 1.125);--text-xl:1.25rem;--text-xl--line-height:calc(1.75 / 1.25);--text-2xl:1.5rem;--text-2xl--line-height:calc(2 / 1.5);--font-weight-medium:500;--font-weight-semibold:600;--font-weight-bold:700;--tracking-tight:-.025em;--leading-relaxed:1.625;--radius-md:.375rem;--default-transition-duration:.15s;--default-transition-timing-function:cubic-bezier(.4, 0, .2, 1);--default-font-family:var(--font-geist-sans);--default-mono-font-family:"SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;--color-primary:var(--primary);--shadow-soft:var(--shadow-soft);--shadow-card:var(--shadow-card)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components{.text-content-body pre{border:1px solid var(--border);border-radius:12px;margin:1rem 0;padding:1.25rem 1.5rem;position:relative;overflow-x:auto;background:#f8fafc!important}.text-content-body pre code{color:#1e293b;padding:0;font-size:.85rem;line-height:1.6;background:0 0!important}html.dark .text-content-body pre{background:#0d1524;border-color:#1e2a41}html.dark .text-content-body pre code{color:#e2e8f0}.text-content-body pre[class*=language-],.text-content-body pre{background:#f8fafc!important}.text-content-body code[class*=language-],.text-content-body code{color:#1e293b;font-family:Fira Code,Consolas,Monaco,monospace!important}html.dark .text-content-body pre[class*=language-],html.dark .text-content-body pre{background:#0d1524!important}html.dark .text-content-body code[class*=language-],html.dark .text-content-body code{color:#e2e8f0}:root .token.comment,:root .token.prolog,:root .token.doctype,:root .token.cdata{color:#6a737d!important}:root .token.punctuation{color:#24292e!important}:root .token.property,:root .token.tag,:root .token.boolean,:root .token.number,:root .token.constant,:root .token.symbol,:root .token.deleted{color:#005cc5!important}:root .token.selector,:root .token.attr-name,:root .token.string,:root .token.char,:root .token.builtin,:root .token.inserted{color:#22863a!important}:root .token.operator,:root .token.entity,:root .token.url,:root .language-css .token.string,:root .style .token.string,:root .token.atrule,:root .token.attr-value,:root .token.keyword{color:#d73a49!important}:root .token.function,:root .token.class-name{color:#6f42c1!important}:root .token.regex,:root .token.important,:root .token.variable{color:#e36209!important}:root .token.important,:root .token.bold{font-weight:700!important}:root .token.italic{font-style:italic!important}html.dark .token.comment,html.dark .token.prolog,html.dark .token.doctype,html.dark .token.cdata{color:#6a737d!important}html.dark .token.punctuation{color:#e1e4e8!important}html.dark .token.property,html.dark .token.tag,html.dark .token.boolean,html.dark .token.number,html.dark .token.constant,html.dark .token.symbol,html.dark .token.deleted{color:#79b8ff!important}html.dark .token.selector,html.dark .token.attr-name,html.dark .token.string,html.dark .token.char,html.dark .token.builtin,html.dark .token.inserted{color:#85e89d!important}html.dark .token.operator,html.dark .token.entity,html.dark .token.url,html.dark .language-css .token.string,html.dark .style .token.string,html.dark .token.atrule,html.dark .token.attr-value,html.dark .token.keyword{color:#f97583!important}html.dark .token.function,html.dark .token.class-name{color:#b392f0!important}html.dark .token.regex,html.dark .token.important,html.dark .token.variable{color:#ffab70!important}.text-content-body h3{color:var(--text-main);border-bottom:1px solid var(--border);margin:2rem 0 .75rem;padding-bottom:.35rem;font-size:1.15rem;font-weight:600}.text-content-body ol{list-style-type:decimal}.text-content-body ol li{margin:.4rem 0}}@layer utilities{.visible{visibility:visible}.absolute{position:absolute}.fixed{position:fixed}.relative{position:relative}.static{position:static}.sticky{position:sticky}.top-0{top:calc(var(--spacing) * 0)}.top-20{top:calc(var(--spacing) * 20)}.z-20{z-index:20}.container{width:100%}@media (min-width:40rem){.container{max-width:40rem}}@media (min-width:48rem){.container{max-width:48rem}}@media (min-width:64rem){.container{max-width:64rem}}@media (min-width:80rem){.container{max-width:80rem}}@media (min-width:96rem){.container{max-width:96rem}}.mx-auto{margin-inline:auto}.mt-4{margin-top:calc(var(--spacing) * 4)}.mt-6{margin-top:calc(var(--spacing) * 6)}.mb-3{margin-bottom:calc(var(--spacing) * 3)}.block{display:block}.contents{display:contents}.flex{display:flex}.grid{display:grid}.hidden{display:none}.inline{display:inline}.inline-flex{display:inline-flex}.list-item{display:list-item}.table{display:table}.h-5{height:calc(var(--spacing) * 5)}.h-11{height:calc(var(--spacing) * 11)}.h-13{height:calc(var(--spacing) * 13)}.h-52{height:calc(var(--spacing) * 52)}.w-5{width:calc(var(--spacing) * 5)}.w-11{width:calc(var(--spacing) * 11)}.max-w-7xl{max-width:var(--container-7xl)}.max-w-none{max-width:none}.min-w-0{min-width:calc(var(--spacing) * 0)}.flex-1{flex:1}.flex-shrink-0{flex-shrink:0}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.resize{resize:both}.scroll-mt-20{scroll-margin-top:calc(var(--spacing) * 20)}.flex-col{flex-direction:column}.flex-wrap{flex-wrap:wrap}.items-center{align-items:center}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.gap-2{gap:calc(var(--spacing) * 2)}.gap-3{gap:calc(var(--spacing) * 3)}.gap-6{gap:calc(var(--spacing) * 6)}:where(.space-y-2>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 2) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 2) * calc(1 - var(--tw-space-y-reverse)))}:where(.space-y-5>:not(:last-child)){--tw-space-y-reverse:0;margin-block-start:calc(calc(var(--spacing) * 5) * var(--tw-space-y-reverse));margin-block-end:calc(calc(var(--spacing) * 5) * calc(1 - var(--tw-space-y-reverse)))}.rounded-full{border-radius:3.40282e38px}.border{border-style:var(--tw-border-style);border-width:1px}.border-t{border-top-style:var(--tw-border-style);border-top-width:1px}.border-\[\#1a2744\]{border-color:#1a2744}.border-\[\#2d3a52\]{border-color:#2d3a52}.border-border\/80{border-color:var(--border-color)}@supports (color:color-mix(in lab, red, red)){.border-border\/80{border-color:color-mix(in oklab, var(--border-color) 80%, transparent)}}.bg-\[\#0b1322\]{background-color:#0b1322}.bg-\[\#1a2744\]{background-color:#1a2744}.bg-surface\/90{background-color:var(--surface)}@supports (color:color-mix(in lab, red, red)){.bg-surface\/90{background-color:color-mix(in oklab, var(--surface) 90%, transparent)}}.p-5{padding:calc(var(--spacing) * 5)}.px-2{padding-inline:calc(var(--spacing) * 2)}.px-4{padding-inline:calc(var(--spacing) * 4)}.py-0\.5{padding-block:calc(var(--spacing) * .5)}.py-2{padding-block:calc(var(--spacing) * 2)}.py-3{padding-block:calc(var(--spacing) * 3)}.py-4{padding-block:calc(var(--spacing) * 4)}.text-center{text-align:center}.text-2xl{font-size:var(--text-2xl);line-height:var(--tw-leading,var(--text-2xl--line-height))}.text-lg{font-size:var(--text-lg);line-height:var(--tw-leading,var(--text-lg--line-height))}.text-sm{font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height))}.text-xs{font-size:var(--text-xs);line-height:var(--tw-leading,var(--text-xs--line-height))}.text-\[0\.6rem\]{font-size:.6rem}.text-\[0\.95rem\]{font-size:.95rem}.leading-relaxed{--tw-leading:var(--leading-relaxed);line-height:var(--leading-relaxed)}.font-bold{--tw-font-weight:var(--font-weight-bold);font-weight:var(--font-weight-bold)}.font-medium{--tw-font-weight:var(--font-weight-medium);font-weight:var(--font-weight-medium)}.font-semibold{--tw-font-weight:var(--font-weight-semibold);font-weight:var(--font-weight-semibold)}.tracking-tight{--tw-tracking:var(--tracking-tight);letter-spacing:var(--tracking-tight)}.text-\[\#3b82f6\]{color:#3b82f6}.text-\[\#94a3b8\]{color:#94a3b8}.text-\[\#64748b\]{color:#64748b}.text-\[\#475569\]{color:#475569}.text-\[\#d1d9e8\]{color:#d1d9e8}.text-\[\#e8edf5\]{color:#e8edf5}.text-text{color:var(--text)}.lowercase{text-transform:lowercase}.uppercase{text-transform:uppercase}.italic{font-style:italic}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.shadow{--tw-shadow:0 1px 3px 0 var(--tw-shadow-color,#0000001a), 0 1px 2px -1px var(--tw-shadow-color,#0000001a);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.shadow-soft{--tw-shadow:var(--shadow-soft);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.ring{--tw-ring-shadow:var(--tw-ring-inset,) 0 0 0 calc(1px + var(--tw-ring-offset-width)) var(--tw-ring-color,currentcolor);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}.blur{--tw-blur:blur(8px);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.grayscale{--tw-grayscale:grayscale(100%);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.invert{--tw-invert:invert(100%);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.filter{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}@media (hover:hover){.hover\:-translate-y-0\.5:hover{--tw-translate-y:calc(var(--spacing) * -.5);translate:var(--tw-translate-x) var(--tw-translate-y)}.hover\:shadow-lg:hover{--tw-shadow:0 10px 15px -3px var(--tw-shadow-color,#0000001a), 0 4px 6px -4px var(--tw-shadow-color,#0000001a);box-shadow:var(--tw-inset-shadow), var(--tw-inset-ring-shadow), var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow)}}@media (min-width:40rem){.sm\:inline{display:inline}.sm\:inline-block{display:inline-block}.sm\:p-6{padding:calc(var(--spacing) * 6)}.sm\:px-6{padding-inline:calc(var(--spacing) * 6)}.sm\:text-xl{font-size:var(--text-xl);line-height:var(--tw-leading,var(--text-xl--line-height))}}@media (min-width:48rem){.md\:w-64{width:calc(var(--spacing) * 64)}.md\:flex-row{flex-direction:row}}@media (min-width:64rem){.lg\:w-72{width:calc(var(--spacing) * 72)}}}:root{--primary:#2563eb;--primary-light:#eff6ff;--bg-app:#f1f5f9;--bg-app-2:#e2e8f0;--bg-card:#fff;--text-main:#0f172a;--text-muted:var(--text-muted);--border:#e2e8f0;--yt-red:red;--safe-bottom:env(safe-area-inset-bottom,0px);--content-max:1180px;--success:#16a34a;--success-light:#dcfce7;--danger:#dc2626;--danger-light:#fee2e2;--warning:#d97706;--warning-light:#fef3c7;--slate-200:#e2e8f0;--slate-400:#94a3b8;--slate-500:#64748b;--background:var(--bg-app);--foreground:var(--text-main);--surface:var(--bg-card);--muted:var(--primary-light);--border-color:var(--border);--text:var(--text-main);--shadow-soft:0 20px 45px #0f172a14;--shadow-card:0 24px 60px #0f172a1f}html.dark{--primary:#60a5fa;--primary-light:#1e293b;--bg-app:#07111f;--bg-app-2:#0b1523;--bg-card:#0f172a;--text-main:#e5eefb;--text-muted:var(--text-muted);--border:#1e293b;--success:#4ade80;--success-light:#4ade8026;--danger:#f87171;--danger-light:#f8717126;--warning:#fbbf24;--warning-light:#fbbf2426;--slate-200:#1e293b;--slate-400:#475569;--slate-500:#94a3b8;--background:var(--bg-app);--foreground:var(--text-main);--surface:var(--bg-card);--muted:var(--primary-light);--border-color:var(--border);--text:var(--text-main);--shadow-soft:0 20px 45px #02061759;--shadow-card:0 24px 60px #02061773}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;margin:0;padding:0}html{scroll-behavior:auto}body{min-height:100svh;color:var(--text-main);background:radial-gradient(circle at top left, #2563eb1f, transparent 28%), radial-gradient(circle at top right, #0ea5e91f, transparent 24%), linear-gradient(180deg, #f8fafc 0%, var(--bg-app) 35%, var(--bg-app-2) 100%);font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,Roboto,Helvetica,Arial,sans-serif;overflow-x:hidden}html.dark body{background:radial-gradient(circle at top left, #60a5fa1f, transparent 28%), radial-gradient(circle at top right, #38bdf81f, transparent 24%), linear-gradient(180deg, #020617 0%, var(--bg-app) 35%, var(--bg-app-2) 100%)}a{color:inherit;text-decoration:none}img{-webkit-user-drag:none;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;max-width:100%}.protect,.pdf-viewer{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}.app-shell{width:min(100%, var(--content-max));flex-direction:column;min-height:100svh;margin:0 auto;display:flex;position:relative}.app-shell:before,.app-shell:after{content:"";filter:blur(72px);pointer-events:none;z-index:-1;border-radius:50%;width:20rem;height:20rem;position:fixed}.app-shell:before{background:#2563eb29;top:-7rem;left:-6rem}.app-shell:after{background:#0ea5e91f;bottom:8rem;right:-8rem}.app-header{z-index:20;background:#fffffff5;border-bottom:1px solid #e2e8f0cc;justify-content:space-between;align-items:center;gap:1rem;padding:.9rem 1rem;display:flex;position:sticky;top:0;box-shadow:0 8px 24px #0f172a0a}html.dark .app-header{background:#0f172af5;border-bottom-color:#1e293bcc}.toast{z-index:200;touch-action:pan-y;border-radius:12px;align-items:center;gap:.5rem;width:fit-content;max-width:calc(100% - 1.5rem);margin:0 auto;padding:.65rem 1rem;font-size:.82rem;font-weight:600;line-height:1.4;display:flex;position:fixed;left:0;right:0;box-shadow:0 8px 32px #0000001f}.toast--offline{color:#b91c1c;background:#fef2f2;border:1px solid #fecaca;animation:.3s toast-in;top:.75rem}.toast--online{color:#15803d;background:#f0fdf4;border:1px solid #bbf7d0;animation:.3s toast-up;bottom:5.5rem}html.dark .toast--offline{color:#fca5a5;background:#7f1d1dd9;border-color:#dc262680;box-shadow:0 8px 32px #0006}html.dark .toast--online{color:#bbf7d0;background:#166534d9;border-color:#4ade8066;box-shadow:0 8px 32px #0006}.toast i:first-child{flex-shrink:0;font-size:1.1rem}.toast-close{cursor:pointer;color:inherit;opacity:.6;background:0 0;border:none;border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;margin-left:auto;padding:.15rem;transition:opacity .15s;display:flex}.toast-close:hover,.toast-close:active{opacity:1}.toast-close i{font-size:1.2rem}@keyframes toast-in{0%{opacity:0;transform:translateY(-.75rem)}to{opacity:1;transform:translateY(0)}}@keyframes toast-up{0%{opacity:0;transform:translateY(.75rem)}to{opacity:1;transform:translateY(0)}}.sw-update-toast{z-index:9999;color:#fff;background:#1e293b;border-radius:12px;align-items:center;gap:.75rem;padding:.85rem 1.25rem;font-size:.85rem;font-weight:600;animation:.3s slide-up;display:flex;position:fixed;bottom:1rem;left:50%;transform:translate(-50%);box-shadow:0 12px 40px #0f172a40}.sw-update-toast button{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:.4rem .9rem;font-size:.78rem;font-weight:700}.sw-update-btn{background:#2563eb!important}.sw-update-dismiss{color:#fff!important;cursor:pointer!important;background:#ffffff26!important;border:none!important;border-radius:6px!important;justify-content:center!important;align-items:center!important;width:28px!important;height:28px!important;padding:.25rem!important;font-size:.9rem!important;line-height:1!important;display:flex!important}@keyframes slide-up{0%{opacity:0;transform:translate(-50%)translateY(20px)}to{opacity:1;transform:translate(-50%)translateY(0)}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.skeleton{background:linear-gradient(90deg, var(--border) 25%, #e2e8f080 50%, var(--border) 75%);background-size:200% 100%;border-radius:12px;animation:1.5s ease-in-out infinite shimmer}html.dark .skeleton{background:linear-gradient(90deg,#33415580 25%,#4755694d 50%,#33415580 75%) 0 0/200% 100%}@keyframes fadeInUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.animate-in{animation:.35s both fadeInUp}.animate-in-delay-1{animation-delay:50ms}.animate-in-delay-2{animation-delay:.1s}.animate-in-delay-3{animation-delay:.15s}.route-progress{z-index:10000;pointer-events:none;background:linear-gradient(90deg,#2563eb,#0ea5e9);border-radius:0 2px 2px 0;height:3px;transition:width .3s;position:fixed;top:0;left:0}@keyframes nav-indicator-in{0%{opacity:0;width:0}to{opacity:1;width:24px}}.install-banner{bottom:calc(70px + var(--safe-bottom));width:min(calc(100% - 1rem), var(--content-max));color:#fff;z-index:999;background:#1e293b;border-radius:14px;align-items:center;gap:.75rem;padding:.85rem 1rem;animation:.3s toast-in;display:flex;position:fixed;left:50%;transform:translate(-50%);box-shadow:0 12px 40px #0f172a40}.install-banner-text{flex:1;min-width:0}.install-banner-text strong{margin-bottom:.15rem;font-size:.85rem;display:block}.install-banner-text span{opacity:.7;font-size:.75rem}.install-banner button{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:10px;flex-shrink:0;padding:.5rem 1rem;font-size:.78rem;font-weight:700}.install-banner .install-dismiss{color:#fff;cursor:pointer;background:#ffffff1a;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:1rem;display:flex}html.dark .install-banner{background:#0f172a;border:1px solid #33415580}html.dark .sw-update-toast{background:#0f172a;box-shadow:0 12px 40px #0006}.app-logo-link{color:inherit;align-items:center;gap:.55rem;text-decoration:none;display:inline-flex}.app-logo-img{object-fit:cover;border-radius:10px}.app-header h1{letter-spacing:-.03em;font-size:1.35rem;font-weight:800}.app-header h1 span,.card-code,.stat-bubble i,.pill-btn.active,.app-card:hover .card-code{color:var(--primary)}.channel-badge{color:#e11d48;white-space:nowrap;background:#fff1f2;border:1px solid #fecdd3;border-radius:999px;align-items:center;gap:.35rem;padding:.45rem .8rem;font-size:.75rem;font-weight:700;text-decoration:none;display:inline-flex}html.dark .channel-badge{color:#fda4af;background:#4c0519;border-color:#9f1239}.app-viewport{padding:0 0 calc(104px + var(--safe-bottom)) 0;flex:1;overflow-y:auto}.welcome-hero,.youtube-embedded-banner,.app-card,.sheet-body,.bottom-sheet{-webkit-backdrop-filter:blur(12px);background:#fffffff0;border:1px solid #e2e8f0e6}html.dark .welcome-hero,html.dark .youtube-embedded-banner,html.dark .app-card,html.dark .sheet-body,html.dark .bottom-sheet{background:#0f172af0;border-color:#24324ae6}.welcome-hero{border-radius:24px;margin:.85rem .85rem 1rem;padding:1rem;animation:.35s both fadeInUp;box-shadow:0 18px 40px #0f172a0f}.welcome-hero h2{letter-spacing:-.03em;margin-bottom:.4rem;font-size:1.6rem;line-height:1.1}.welcome-hero p{color:var(--text-muted);margin-bottom:1rem;font-size:.92rem;line-height:1.5}.hero-top{align-items:center;gap:1rem;margin-bottom:1rem;display:flex}.hero-top>div{flex:1;min-width:0}.hero-top>div h2{margin-bottom:.2rem}.hero-top>div p{margin-bottom:0}.offline-error{text-align:center;max-width:480px;margin-left:auto;margin-right:auto;padding:2rem 1.25rem}.offline-error-icon{background:var(--primary-light);border-radius:50%;justify-content:center;align-items:center;width:64px;height:64px;margin-bottom:1rem;display:inline-flex}.offline-error-icon i{color:var(--primary);font-size:1.8rem}html.dark .offline-error-icon{background:#2563eb26}.offline-error-url{border:1px solid var(--border);color:var(--text-main);overflow-wrap:anywhere;word-break:break-all;background:#e2e8f099;border-radius:10px;width:fit-content;max-width:100%;margin:.5rem auto 1rem;padding:.5rem .75rem;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.8rem}html.dark .offline-error-url{background:#1e293b99}.offline-error-message{margin-left:auto;margin-right:auto}.offline-error-actions{gap:.6rem;max-width:340px;margin-top:1.25rem;margin-left:auto;margin-right:auto;display:flex}.offline-error-actions .upload-btn{flex:1;text-decoration:none}.app-stat-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem;display:grid}.stat-bubble{background:linear-gradient(#f8fafc,#eef2ff);border-radius:18px;align-items:center;gap:.7rem;padding:.85rem;display:flex}html.dark .stat-bubble{background:linear-gradient(#0f172a,#1e293b)}.stat-bubble i{font-size:1.45rem}.stat-val{font-size:.95rem;font-weight:800}.stat-lbl{color:var(--text-muted);font-size:.72rem}.ad-banner{-webkit-backdrop-filter:blur(12px);background:#fffffff0;border:1px solid #e2e8f0e6;border-radius:20px;margin:.85rem .85rem 0;padding:.6rem .6rem .45rem;animation:.35s both fadeInUp;box-shadow:0 10px 24px #0f172a0d}html.dark .ad-banner{background:#0f172af0;border-color:#24324ae6}.ad-banner-label{letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted);text-align:center;margin-bottom:.3rem;font-size:.6rem;display:block}.ad-banner-slot{justify-content:center;align-items:center;width:100%;min-height:50px;display:flex;overflow:hidden}.ad-banner-slot iframe{border-radius:14px}.section-headline{letter-spacing:.08em;text-transform:uppercase;color:var(--text-muted);margin:0 1rem .7rem;font-size:.78rem;font-weight:800;animation:.35s 50ms both fadeInUp}.semester-scroller{scrollbar-width:none;scroll-snap-type:x proximity;gap:.5rem;padding:0 1rem 1rem;display:flex;overflow-x:auto}.semester-scroller::-webkit-scrollbar{display:none}.pill-btn{border:1px solid var(--border);color:var(--text-muted);white-space:nowrap;cursor:pointer;scroll-snap-align:start;background:#fffffff2;border-radius:999px;padding:.7rem 1.1rem;font-size:.85rem;font-weight:700;box-shadow:0 8px 18px #0f172a0a}html.dark .pill-btn{background:#0f172af2;border-color:#1e293bcc}.pill-btn.active{color:#fff;background:linear-gradient(135deg,#2563eb,#1d4ed8);border-color:#0000;box-shadow:0 12px 24px #2563eb3d}.subject-stack{grid-template-columns:1fr;gap:.75rem;padding:0 1rem;animation:.25s forwards fadeInUp;display:grid}.quiz-container{width:100%;margin:0 auto}.quiz-setup{flex-direction:column;gap:.75rem;width:100%;padding:0 1rem;display:flex}.quiz-answers{flex-direction:column;gap:.75rem;width:100%;padding:0 1rem 2rem;display:flex}@media (min-width:768px){.quiz-setup,.quiz-answers{padding-left:1.35rem;padding-right:1.35rem}}@media (min-width:900px){.quiz-options{grid-template-columns:repeat(2,minmax(0,1fr));align-items:stretch;display:grid!important}.quiz-dots{flex-wrap:wrap!important;overflow-x:visible!important}}.app-card{cursor:pointer;border-radius:18px;justify-content:space-between;align-items:center;gap:1rem;min-height:78px;padding:1rem;transition:transform .16s,box-shadow .16s,border-color .16s,background-color .16s;display:flex;box-shadow:0 12px 26px #0f172a0d}.app-card:active{transform:scale(.97)}.card-left{flex-direction:column;gap:.25rem;min-width:0;display:flex}.card-code{letter-spacing:.03em;font-size:.95rem;font-weight:600}.card-title{font-size:1rem;font-weight:700;line-height:1.35}.card-meta-inline{color:var(--text-muted);font-size:.75rem;line-height:1.3}.card-chevron{color:var(--text-muted);flex-shrink:0;font-size:1.35rem}.youtube-embedded-banner{color:#fff;background:linear-gradient(135deg,#0f172a 0%,#1e293b 100%);border-radius:20px;justify-content:space-between;align-items:center;gap:1rem;margin:1.25rem 1rem 0;padding:1.1rem;text-decoration:none;display:flex;box-shadow:0 16px 30px #0f172a1f}.yt-banner-left{flex-direction:column;gap:.25rem;min-width:0;display:flex}.yt-banner-left span{color:#f43f5e;letter-spacing:.08em;text-transform:uppercase;font-size:.68rem;font-weight:800}.yt-banner-left h4{font-size:1.02rem;font-weight:800}.yt-banner-left p{color:#cbd5e1;font-size:.76rem;line-height:1.4}.yt-play-icon{background:red;border-radius:999px;flex-shrink:0;place-items:center;width:46px;height:46px;display:grid;box-shadow:0 12px 20px #ff000047}.lecture-section{margin:1.5rem 1rem 0;padding-bottom:.25rem}.lecture-section-head{justify-content:space-between;align-items:end;gap:1rem;margin-bottom:.8rem;display:flex}.lecture-section-head h3{letter-spacing:-.02em;font-size:1.05rem;font-weight:800}.lecture-section-head p{color:var(--text-muted);margin-top:.2rem;font-size:.78rem}.lecture-grid{grid-template-columns:1fr;gap:.9rem;display:grid}.lecture-card{color:inherit;background:#fffffff2;border:1px solid #e2e8f0e6;border-radius:18px;flex-direction:column;text-decoration:none;display:flex;overflow:hidden;box-shadow:0 12px 26px #0f172a0d}html.dark .lecture-card{background:#0f172af2;border-color:#24324ae6}.lecture-thumb{aspect-ratio:16/9;background:#0f172a;position:relative;overflow:hidden}.lecture-thumb img{object-fit:cover;width:100%;height:100%;display:block}.lecture-duration{color:#fff;background:#0f172ad1;border-radius:6px;padding:.25rem .45rem;font-size:.7rem;font-weight:700;position:absolute;bottom:.7rem;right:.7rem}.lecture-body{flex-direction:column;gap:.4rem;padding:.85rem .9rem .95rem;display:flex}.lecture-badges{flex-wrap:wrap;gap:.4rem;display:flex}.lecture-badge{color:var(--primary);letter-spacing:.04em;text-transform:uppercase;background:#eff6ff;border-radius:999px;padding:.24rem .5rem;font-size:.68rem;font-weight:800}html.dark .lecture-badge{color:var(--primary);background:#1e293b}.lecture-title{font-size:.95rem;font-weight:700;line-height:1.35}.lecture-meta{color:var(--text-muted);font-size:.76rem}.lecture-card:active{transform:scale(.99)}.lecture-card-wrap{break-inside:avoid}.lecture-notes{border-top:1px solid var(--border);background:var(--surface);border-radius:0 0 18px 18px;padding:.6rem .9rem .7rem}.lecture-notes-head{color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;align-items:center;gap:.3rem;margin-bottom:.4rem;font-size:.72rem;font-weight:700;display:flex}.lecture-notes-list{flex-direction:column;gap:.3rem;display:flex}.lecture-note-link{color:var(--primary);align-items:center;gap:.35rem;padding:.3rem 0;font-size:.78rem;line-height:1.3;text-decoration:none;transition:opacity .2s;display:flex}.lecture-note-link:hover{opacity:.75}.lecture-note-link i{flex-shrink:0;font-size:.9rem}.lecture-notes-more{color:var(--text-muted);padding:.15rem 0;font-size:.72rem}.lecture-notes-placeholder{color:var(--text-muted);align-items:center;gap:.35rem;padding:.3rem 0;font-size:.75rem;display:flex}.bottom-nav{width:min(calc(100% - 1rem), var(--content-max));padding:.6rem 0 calc(.45rem + var(--safe-bottom));-webkit-backdrop-filter:blur(12px);z-index:100;background:#fffffff2;border:1px solid #e2e8f0eb;border-radius:20px;justify-content:space-around;gap:.35rem;display:flex;position:fixed;bottom:.75rem;left:50%;transform:translate(-50%);box-shadow:0 18px 34px #0f172a24}html.dark .bottom-nav{background:#0f172af2;border-color:#24324aeb}.bottom-nav--dimmed{opacity:.25;transition:opacity .3s}.nav-item{min-width:0;color:var(--text-muted);cursor:pointer;-webkit-tap-highlight-color:transparent;background:0 0;border:none;flex-direction:column;flex:1;align-items:center;gap:.2rem;padding:.1rem .15rem;font-size:.65rem;font-weight:700;transition:color .2s;display:flex;position:relative}.nav-item i{font-size:1.4rem;transition:transform .2s}.nav-item:active i{transform:scale(.88)}.nav-item.active{color:var(--primary)}.nav-item.active:before{content:"";background:var(--primary);border-radius:0 0 3px 3px;height:3px;animation:.25s nav-indicator-in;position:absolute;top:-.35rem;left:50%;transform:translate(-50%)}.bottom-sheet-backdrop{pointer-events:none;z-index:200;visibility:hidden;background:#0f172a80;position:fixed;inset:0}.bottom-sheet-backdrop.open{visibility:visible;pointer-events:auto}.bottom-sheet{z-index:201;visibility:hidden;border-radius:0 0 24px 24px;flex-direction:column;width:min(100%,760px);max-height:82vh;display:flex;position:fixed;top:0;left:50%;overflow:hidden;transform:translate(-50%);box-shadow:0 10px 32px #0f172a2e}.bottom-sheet.open{visibility:visible}.sheet-handle{display:none}.sheet-header{border-bottom:1px solid var(--border);flex-shrink:0;padding:.55rem 1rem 1rem;position:relative}html.dark .sheet-header{border-bottom-color:var(--border)}.sheet-close{width:32px;height:32px;color:var(--text-main);cursor:pointer;background:#f1f5f9;border:none;border-radius:999px;place-items:center;display:grid;position:absolute;top:.5rem;right:1rem}html.dark .sheet-close{color:var(--text-main);background:#1e293b}.sheet-body{-webkit-overflow-scrolling:touch;overscroll-behavior:contain;flex:1;min-height:0;padding:1rem;overflow-y:auto}.badge-row{flex-wrap:wrap;gap:.5rem;margin:.25rem 0 1rem;display:flex}.sheet-badge{background:#f1f5f9;border-radius:999px;padding:.35rem .7rem;font-size:.75rem;font-weight:700}html.dark .sheet-badge{background:#1e293b}.sheet-badge.accent{background:var(--primary-light);color:var(--primary)}.syllabus-block-title{color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:.8rem;font-size:.78rem;font-weight:800}.app-list{flex-direction:column;gap:.85rem;list-style:none;display:flex}.app-list li{color:#334155;padding-left:1.55rem;font-size:.9rem;line-height:1.45;position:relative}html.dark .app-list li{color:#cbd5e1}.app-list li:before{content:"";color:var(--primary);font-size:1.1rem;font-weight:700;position:absolute;top:1px;left:0;font-family:boxicons!important}.app-search{width:100%;position:relative}.app-search-icon{color:var(--text-muted);pointer-events:none;font-size:1.1rem;position:absolute;top:50%;left:.85rem;transform:translateY(-50%)}.app-search input{border:1px solid var(--border);background:var(--bg-card);width:100%;color:var(--text-main);border-radius:14px;outline:none;padding:.75rem 1rem .75rem 2.5rem;font-size:.88rem;transition:border-color .2s,box-shadow .2s}.app-search input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2563eb26}html.dark .app-search input:focus{box-shadow:0 0 0 3px #60a5fa26}.notes-tree-controls{-webkit-backdrop-filter:blur(12px);background:#fffffff0;border:1px solid #e2e8f0e6;border-radius:20px;margin:0 1rem 1.25rem;padding:1.15rem;box-shadow:0 12px 26px #0f172a0d}html.dark .notes-tree-controls{background:#0f172af0;border-color:#24324ae6}.notes-tree-search-row{flex-direction:column;gap:.75rem;margin-bottom:.85rem;display:flex}html.dark .notes-tree-controls .app-search input{background:#0f172a99}.notes-tree-filters{flex-wrap:wrap;gap:.5rem;display:flex}.notes-entry{-webkit-backdrop-filter:blur(12px);background:#fffffff0;border:1px solid #e2e8f0e6;border-radius:20px;margin:0 1rem 1rem;padding:1.15rem;transition:transform .16s,box-shadow .16s;box-shadow:0 12px 26px #0f172a0d}html.dark .notes-entry{background:#0f172af0;border-color:#24324ae6}.notes-entry:hover{transform:translateY(-2px);box-shadow:0 18px 36px #0f172a1a}.notes-entry-header{flex-direction:column;gap:.35rem;margin-bottom:1rem;display:flex}.notes-entry-sem{letter-spacing:.1em;text-transform:uppercase;color:var(--primary);font-size:.68rem;font-weight:800}.notes-entry-title{color:var(--text-main);font-size:1.05rem;font-weight:800;line-height:1.3}.notes-entry-meta{color:var(--text-muted);font-size:.78rem}.notes-entry-action{background:var(--primary-light);color:var(--primary);border-radius:999px;align-self:flex-start;align-items:center;gap:.4rem;margin-top:.35rem;padding:.5rem .9rem;font-size:.78rem;font-weight:700;text-decoration:none;transition:background .2s,color .2s;display:inline-flex}.notes-entry-action:hover{background:var(--primary);color:#fff}.notes-entry-action i{font-size:.85rem}.notes-entry-grid{grid-template-columns:1fr;gap:.75rem;display:grid}.notes-col{border:1px solid var(--border);background:#f1f5f980;border-radius:14px;padding:.9rem}html.dark .notes-col{background:#0f172a80}.notes-col-head{align-items:center;gap:.45rem;margin-bottom:.75rem;display:flex}.notes-col-head i{color:var(--primary);font-size:1rem}.notes-col-head i.amber{color:#f59e0b}html.dark .notes-col-head i.amber{color:#fbbf24}.notes-col-head span{letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted);font-size:.68rem;font-weight:800}.notes-item{color:inherit;background:#f1f5f9b3;border-radius:12px;justify-content:space-between;align-items:center;gap:.6rem;padding:.6rem .8rem;font-size:.85rem;font-weight:500;text-decoration:none;transition:background .15s,transform .15s;display:flex}html.dark .notes-item{background:#1e293b99}.notes-item:hover{background:#e2e8f0e6;transform:translate(3px)}html.dark .notes-item:hover{background:#334155b3}.notes-item-label{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.notes-item-tag{text-transform:uppercase;letter-spacing:.06em;color:var(--primary);background:#2563eb1a;border-radius:6px;flex-shrink:0;padding:.2rem .45rem;font-size:.6rem;font-weight:800}.notes-item-tag.amber{color:#f59e0b;background:#f59e0b1a}html.dark .notes-item-tag.amber{color:#fbbf24}.notes-empty{-webkit-backdrop-filter:blur(12px);text-align:center;background:#fffffff0;border:1px solid #e2e8f0e6;border-radius:20px;margin:0 1rem 1rem;padding:2rem 1rem}html.dark .notes-empty{background:#0f172af0;border-color:#24324ae6}.notes-empty p{color:var(--text-muted);font-size:.88rem}.notes-item-empty{color:var(--text-muted);background:#f1f5f966;border-radius:10px;padding:.5rem .75rem;font-size:.78rem;font-style:italic}html.dark .notes-item-empty{background:#1e293b66}.nt-unit-card{border:1px solid var(--border);background:#f1f5f966;border-radius:14px;align-items:center;gap:.75rem;padding:.85rem;transition:background .15s;display:flex}html.dark .nt-unit-card{background:#0f172a4d}.nt-unit-info{flex-direction:column;flex:1;gap:.25rem;min-width:0;display:flex}.nt-unit-title{font-size:.88rem;font-weight:700;line-height:1.3}.nt-unit-summary{color:var(--text-muted);-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:.75rem;line-height:1.4;display:-webkit-box;overflow:hidden}.nt-unit-badges{flex-wrap:wrap;gap:.35rem;margin-top:.2rem;display:flex}.nt-badge{letter-spacing:.04em;text-transform:uppercase;border-radius:6px;align-items:center;gap:.2rem;padding:.2rem .5rem;font-size:.62rem;font-weight:800;display:inline-flex}.nt-badge i{font-size:.72rem}.nt-badge.pdf{color:#ef4444;background:#ef444414}html.dark .nt-badge.pdf{background:#ef444426}.nt-badge.hw{color:#d97706;background:#f59e0b14}html.dark .nt-badge.hw{background:#f59e0b26}.nt-unit-open{background:var(--primary-light);color:var(--primary);white-space:nowrap;border-radius:999px;flex-shrink:0;align-items:center;gap:.15rem;padding:.45rem .75rem;font-size:.75rem;font-weight:700;text-decoration:none;transition:background .15s,color .15s;display:inline-flex}.nt-unit-open:hover{background:var(--primary);color:#fff}.nt-unit-open i{font-size:.9rem}.completion-toggle{text-transform:uppercase;letter-spacing:.1em;cursor:pointer;border:1px solid var(--border);color:var(--text-main);background:#fffffff2;border-radius:999px;align-items:center;gap:.4rem;padding:.55rem 1rem;font-size:.72rem;font-weight:800;transition:all .25s;display:inline-flex;box-shadow:0 6px 14px #0f172a0f}.completion-toggle:hover{transform:scale(1.02);box-shadow:0 10px 20px #0f172a1a}.completion-toggle:active{transform:scale(.98)}.completion-toggle.completed{color:#fff;background:linear-gradient(135deg,#10b981,#059669);border-color:#0000;box-shadow:0 10px 24px #10b98140}html.dark .completion-toggle.completed{background:linear-gradient(135deg,#10b981,#047857)}.completion-toggle i{font-size:1.1rem}html.dark .completion-toggle{background:#0f172af2}.header-actions{align-items:center;gap:.5rem;display:flex}.theme-toggle-btn{border:1px solid var(--border);width:2.75rem;height:2.75rem;color:var(--text-main);cursor:pointer;background:#ffffffe6;border-radius:999px;justify-content:center;align-items:center;transition:transform .2s,box-shadow .2s;display:inline-flex;box-shadow:0 12px 26px #0f172a0f}.theme-toggle-btn:hover{transform:translateY(-2px);box-shadow:0 18px 32px #0f172a1a}.theme-toggle-btn i{font-size:1.25rem}html.dark .theme-toggle-btn{background:#0f172ae6}html.dark .theme-toggle-btn i{color:#fbbf24}.dashboard-card{-webkit-backdrop-filter:blur(12px);color:inherit;background:#fffffff0;border:1px solid #e2e8f0e6;border-radius:22px;padding:1.1rem;text-decoration:none;transition:transform .18s,box-shadow .18s;display:block;box-shadow:0 12px 26px #0f172a0d}.dashboard-card:hover{box-shadow:var(--shadow-card);transform:translateY(-3px)}html.dark .dashboard-card{background:#0f172af0;border-color:#24324ae6}.dashboard-card-head{justify-content:space-between;align-items:flex-start;gap:1rem;margin-bottom:.9rem;display:flex}.dashboard-card-sem{letter-spacing:.1em;text-transform:uppercase;color:var(--primary);font-size:.68rem;font-weight:800}.dashboard-card-title{letter-spacing:-.02em;color:var(--text-main);margin-top:.3rem;font-size:1.15rem;font-weight:900}.dashboard-card-open{color:var(--primary);background:#2563eb1a;border-radius:999px;flex-shrink:0;padding:.3rem .7rem;font-size:.72rem;font-weight:700}.dashboard-card-subjects{grid-template-columns:1fr;gap:.65rem;display:grid}.dashboard-subject-box{background:var(--bg-app);border:1px solid var(--border);border-radius:14px;padding:.85rem}html.dark .dashboard-subject-box{background:#0f172a66}.dashboard-subject-code{color:var(--primary);letter-spacing:.05em;font-size:.68rem;font-weight:800}.dashboard-subject-name{color:var(--text-main);margin-top:.2rem;font-size:.9rem;font-weight:600}.dashboard-subject-desc{color:var(--text-muted);margin-top:.2rem;font-size:.72rem;line-height:1.5}@media (min-width:640px){.dashboard-card-subjects{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (min-width:1024px){.dashboard-card-subjects{grid-template-columns:repeat(3,minmax(0,1fr))}}.progress-dashboard{gap:.9rem;display:grid}.progress-card{-webkit-backdrop-filter:blur(12px);background:#fffffff0;border:1px solid #e2e8f0e6;border-radius:20px;padding:1.1rem;box-shadow:0 12px 26px #0f172a0d}html.dark .progress-card{background:#0f172af0;border-color:#24324ae6}.progress-label{letter-spacing:.1em;text-transform:uppercase;color:var(--primary);font-size:.68rem;font-weight:800}.progress-value{letter-spacing:-.02em;color:var(--text-main);margin-top:.3rem;font-size:1.6rem;font-weight:900}.progress-desc{color:var(--text-muted);margin-top:.4rem;font-size:.82rem;line-height:1.45}.progress-bar-track{background:var(--bg-app-2);border-radius:999px;height:8px;margin-top:1rem;overflow:hidden}html.dark .progress-bar-track{background:#1e293b99}.progress-bar-fill{background:linear-gradient(90deg, var(--primary), #f59e0b);border-radius:999px;height:100%;transition:width .4s}.metrics-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:.65rem;margin-top:.9rem;display:grid}.metric-box{background:var(--bg-app);border:1px solid var(--border);border-radius:14px;padding:.9rem}html.dark .metric-box{background:#0f172a80}.metric-box-label{text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);font-size:.65rem;font-weight:800}.metric-box-value{letter-spacing:-.02em;color:var(--text-main);margin-top:.35rem;font-size:1.4rem;font-weight:900}@media (min-width:1024px){.progress-dashboard{grid-template-columns:1.4fr .9fr}}.upload-card{-webkit-backdrop-filter:blur(12px);background:#fffffff0;border:1px solid #e2e8f0e6;border-radius:22px;padding:1.25rem;box-shadow:0 12px 26px #0f172a0d}html.dark .upload-card{background:#0f172af0;border-color:#24324ae6}.upload-field{margin-bottom:1.1rem}.upload-label{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);margin-bottom:.4rem;font-size:.72rem;font-weight:800;display:block}.upload-select{border:1px solid var(--border);background:var(--bg-card);width:100%;color:var(--text-main);appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-position:right .9rem center;background-repeat:no-repeat;border-radius:14px;outline:none;padding:.75rem .9rem;font-size:.88rem;transition:border-color .2s,box-shadow .2s}.upload-select:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2563eb26}html.dark .upload-select:focus{box-shadow:0 0 0 3px #60a5fa26}.upload-select:disabled{opacity:.5;cursor:not-allowed}html.dark .upload-select{background-color:#0f172a99}.upload-radio-group{gap:.5rem;display:flex}.upload-radio-btn{border:1px solid var(--border);background:var(--bg-card);color:var(--text-muted);cursor:pointer;border-radius:14px;flex:1;padding:.65rem .8rem;font-size:.82rem;font-weight:700;transition:all .2s}html.dark .upload-radio-btn{background:#0f172a99}.upload-radio-btn.active{border-color:var(--primary);background:var(--primary-light);color:var(--primary)}html.dark .upload-radio-btn.active{color:var(--primary);background:#2563eb26}.upload-file-area{position:relative}.upload-file-input{opacity:0;pointer-events:none;width:1px;height:1px;position:absolute}.upload-file-label{border:2px dashed var(--border);background:var(--bg-card);color:var(--text-muted);cursor:pointer;border-radius:14px;align-items:center;gap:.6rem;padding:.85rem 1rem;font-size:.85rem;font-weight:600;transition:border-color .2s,background .2s;display:flex}.upload-file-label:hover{border-color:var(--primary);background:var(--primary-light)}html.dark .upload-file-label:hover{background:#2563eb14}.upload-file-size{color:var(--text-muted);margin-left:auto;font-size:.72rem;font-weight:500}.upload-actions{gap:.65rem;margin-top:1.25rem;display:flex}.upload-btn{color:#fff;cursor:pointer;background:linear-gradient(135deg,#2563eb,#1d4ed8);border:none;border-radius:16px;flex:1;justify-content:center;align-items:center;gap:.45rem;padding:.8rem 1rem;font-size:.88rem;font-weight:800;transition:transform .16s,box-shadow .16s;display:inline-flex;box-shadow:0 12px 24px #2563eb3d}.upload-btn:active{transform:scale(.98)}.upload-btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none}.upload-btn i{font-size:1.15rem}.upload-btn-secondary{color:var(--text-muted);box-shadow:none;border:1px solid var(--border);background:0 0;flex:none}html.dark .upload-btn-secondary{background:#0f172a99}.upload-message{border-radius:14px;align-items:flex-start;gap:.55rem;margin-top:1rem;padding:.9rem;font-size:.85rem;line-height:1.45;display:flex}.upload-message i{flex-shrink:0;margin-top:1px;font-size:1.2rem}.upload-message-error{color:#b91c1c;background:#fef2f2;border:1px solid #fecaca}html.dark .upload-message-error{color:#fca5a5;background:#7f1d1d4d;border-color:#dc262666}.upload-message-success{color:#166534;background:#f0fdf4;border:1px solid #bbf7d0;flex-direction:column}html.dark .upload-message-success{color:#86efac;background:#16653440;border-color:#22c55e4d}.upload-result-details{flex-direction:column;gap:.3rem;font-size:.82rem;display:flex}.upload-result-details code{word-break:break-all;background:#0000000f;border-radius:4px;padding:.1rem .3rem;font-size:.75rem}html.dark .upload-result-details code{background:#ffffff14}.upload-result-link{color:var(--primary);word-break:break-all;text-decoration:underline}.upload-result-hint{opacity:.85;border-top:1px solid #00000014;margin-top:.5rem;padding-top:.5rem;font-size:.78rem}.upload-result-hint code{background:#0000000f;border-radius:4px;padding:.1rem .3rem;font-size:.75rem}html.dark .upload-result-hint code{background:#ffffff14}.upload-path-preview{background:var(--bg-app);border:1px solid var(--border);border-radius:12px;margin-top:1rem;padding:.7rem .9rem}html.dark .upload-path-preview{background:#0f172a80}.upload-path-preview code{word-break:break-all;color:var(--text-muted);font-size:.78rem;display:block}@media (min-width:768px){.notes-tree-controls,.notes-entry,.notes-empty{margin-left:1.35rem;margin-right:1.35rem}.notes-entry-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (min-width:1024px){.notes-entry-header{flex-direction:row;justify-content:space-between;align-items:flex-start}.notes-entry-action{margin-top:0}}@media (min-width:768px){.app-header{border-radius:0 0 24px 24px;padding:1rem 1.35rem}.welcome-hero,.ad-banner,.youtube-embedded-banner,.section-headline,.semester-scroller,.subject-stack{margin-left:1.35rem;margin-right:1.35rem}.welcome-hero{padding:1.25rem}.subject-stack{grid-template-columns:repeat(2,minmax(0,1fr));gap:.95rem;padding:0}.app-card{min-height:92px;padding:1.1rem 1.15rem}.youtube-embedded-banner{padding:1.25rem}.lecture-section{margin:1.65rem 1.35rem 0}.lecture-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.sheet-body{padding:1.35rem}}@media (min-width:1024px){.app-header{border:1px solid #e2e8f0d9;margin:1rem 1.35rem 0}html.dark .app-header{border-color:#1e293bcc}.welcome-hero{grid-template-columns:minmax(0,1.35fr) minmax(280px,.9fr);align-items:end;gap:1.25rem;padding:1.5rem;display:grid}.welcome-hero h2{font-size:2.2rem}.welcome-hero p{max-width:58ch;margin-bottom:0;font-size:1rem}.app-stat-row{grid-template-columns:1fr}.semester-scroller{flex-wrap:wrap;gap:.65rem;overflow-x:visible}.subject-stack,.lecture-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.app-card{min-height:104px}.bottom-nav{width:min(100% - 2rem,940px)}.bottom-sheet{border-radius:28px;width:min(760px,100% - 2rem);bottom:1.1rem}.upload-card{max-width:640px;margin:0 auto}}.unit-hero{-webkit-backdrop-filter:blur(12px);background:#fffffff0;border:1px solid #e2e8f0e6;border-radius:24px;margin:.85rem .85rem 0;padding:1rem;box-shadow:0 18px 40px #0f172a0f}html.dark .unit-hero{background:#0f172af0;border-color:#24324ae6}.unit-hero-top{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:.75rem;display:flex}.unit-hero-title{letter-spacing:-.02em;margin-top:.6rem;font-size:1.35rem;font-weight:800;line-height:1.2}.unit-hero-desc{color:var(--text-muted);margin-top:.35rem;margin-bottom:0;font-size:.88rem;line-height:1.5}.unit-notes-section{margin-top:1rem;padding:0 .85rem}.unit-notes-section .section-headline{margin-bottom:.6rem;margin-left:.15rem}.unit-notes-list{flex-direction:column;gap:.65rem;display:flex}.unit-note-card{-webkit-backdrop-filter:blur(12px);color:inherit;background:#fffffff0;border:1px solid #e2e8f0e6;border-radius:16px;align-items:center;gap:.75rem;min-height:60px;padding:.9rem 1rem;text-decoration:none;transition:transform .15s,box-shadow .15s;display:flex;box-shadow:0 8px 20px #0f172a0a}html.dark .unit-note-card{background:#0f172af0;border-color:#24324ae6}.unit-note-card:active{transform:scale(.98)}.unit-note-icon{flex-shrink:0;font-size:1.35rem}.unit-note-title{-webkit-line-clamp:2;-webkit-box-orient:vertical;flex:1;min-width:0;font-size:.88rem;font-weight:600;line-height:1.35;display:-webkit-box;overflow:hidden}.unit-note-dl{color:var(--text-muted);flex-shrink:0;font-size:1.25rem}.unit-note-empty,.unit-coming-soon{border:1px dashed var(--border);background:#f1f5f980;border-radius:14px;align-items:center;gap:.6rem;padding:1rem;display:flex}html.dark .unit-note-empty,html.dark .unit-coming-soon{background:#1e293b4d}.unit-note-empty i,.unit-coming-soon i{color:var(--text-muted);flex-shrink:0;font-size:1.15rem}.unit-note-empty-label{color:var(--text-muted);font-size:.82rem;font-style:italic}.unit-coming-soon{align-items:center;gap:.65rem;margin:.5rem 0;padding:.9rem 1rem;display:flex}.unit-coming-soon i{color:var(--text-muted);flex-shrink:0;font-size:1.3rem}.unit-coming-soon span{color:var(--text-muted);font-size:.85rem;line-height:1.4}.unit-back-row{margin-top:.25rem;padding:.85rem}.unit-quiz-cta{padding:.75rem .85rem 0}.quiz-card{border:1px solid var(--primary);background:var(--primary-light)}.card-sub{color:var(--text-muted);font-size:.78rem;line-height:1.3}@media (min-width:768px){.unit-hero{margin:.85rem 1.35rem 0;padding:1.25rem}.unit-notes-section{padding:0 1.35rem}.unit-hero-title{font-size:1.6rem}.unit-back-row{padding:.85rem 1.35rem}.unit-quiz-cta{padding:.85rem 1.35rem 0}.unit-subnav{margin-top:.5rem}.unit-notes-list{grid-template-columns:repeat(2,1fr);gap:.75rem;display:grid}}.unit-subnav{border-bottom:1px solid var(--border);gap:.5rem;margin-bottom:1.25rem;padding:.5rem .85rem .75rem;display:flex}.subnav-link{color:var(--text-muted);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:.6rem;align-items:center;gap:.4rem;min-height:44px;padding:.5rem 1rem;font-family:inherit;font-size:.85rem;font-weight:500;text-decoration:none;transition:all .2s;display:flex}.subnav-link:hover{background:var(--bg-app-2);color:var(--text-main)}.subnav-link.active{background:var(--primary-light);color:var(--primary);border-color:var(--primary)}.subnav-link-quiz{margin-left:auto}.text-content-section{padding:0 .3rem 2rem}.text-content-body{color:var(--text-main);max-width:720px;margin:0 auto;line-height:1.7}.text-content-body h2{color:var(--primary);border-bottom:2px solid var(--border);margin:2rem 0 1rem;padding-bottom:.5rem;font-size:1.4rem;font-weight:700}.text-content-body h3{color:var(--text-main);margin:1.5rem 0 .75rem;font-size:1.15rem;font-weight:600}.text-content-body h4{color:var(--text-main);margin:1rem 0 .5rem;font-size:1rem;font-weight:600}.text-content-body p{margin:.75rem 0}.text-content-body ul,.text-content-body ol{margin:.75rem 0;padding-left:1.5rem}.text-content-body li{margin:.3rem 0;line-height:1.6}.text-content-body strong{color:var(--text-main)}.text-content-body table{border-collapse:collapse;width:100%;margin:1rem 0;font-size:.88rem;display:block;overflow-x:auto}.text-content-body th,.text-content-body td{border:1px solid var(--border);text-align:left;padding:.5rem .75rem}.text-content-body th{background:var(--bg-app-2);font-weight:600}.text-content-body pre{background:var(--bg-app-2);border:1px solid var(--border);border-radius:.5rem;margin:1rem 0;padding:1rem;overflow-x:auto}.text-content-body code{background:var(--bg-app-2);color:var(--primary);border-radius:.25rem;padding:.15rem .35rem;font-family:Fira Code,Consolas,Monaco,monospace;font-size:.85rem}.text-content-body pre code{color:var(--text-main);background:0 0;padding:0;font-size:.85rem}@media (min-width:768px){.text-content-section{padding:0 1.35rem 2rem}}@media (max-width:640px){.text-content-body h2{font-size:1.25rem}.text-content-body h3{font-size:1.05rem}}.text-content-body .hl-keyword{color:#60a5fa;font-weight:600}.text-content-body .hl-term{color:#a78bfa;font-weight:500}.text-content-body .hl-code{color:#cbd5e1;background:#1e293b;border:1px solid #2d3a52;border-radius:6px;padding:.1rem .5rem;font-family:Fira Code,Consolas,Monaco,monospace;font-size:.82em}html.dark .text-content-body .hl-code{background:#0f172a;border-color:#1e293b}.text-content-body .text-content-card{transition:border-color .2s;box-shadow:0 4px 20px #0000000f;background:var(--bg-card)!important;border:1px solid var(--border)!important;border-radius:16px!important;margin:1rem 0!important;padding:1.25rem 1.5rem!important}.text-content-body .text-content-card:hover{border-color:var(--primary)!important}.text-content-body .text-content-card h3{color:var(--text-main);align-items:center;gap:.5rem;font-size:1.15rem;font-weight:700;display:flex;border-bottom:none!important;margin-top:0!important;margin-bottom:.75rem!important;padding-bottom:0!important}.text-content-body .text-content-card h3 .tc-badge{border-radius:20px;padding:.15rem .6rem;font-size:.6rem;font-weight:600;background:var(--bg-app-2)!important;color:var(--text-muted)!important;border:1px solid var(--border)!important}.text-content-body .text-content-card p{color:var(--text-main);line-height:1.7}.text-content-body .text-content-card strong{color:var(--primary);font-weight:600}.text-content-body .text-content-card .hl-term{color:#7c3aed;font-weight:500}.text-content-body .text-content-card .hl-code{color:var(--text-main);border-radius:6px;padding:.1rem .5rem;font-family:Fira Code,Consolas,Monaco,monospace;font-size:.82em;background:var(--bg-app-2)!important;border:1px solid var(--border)!important}.text-content-body .text-content-card pre{border-radius:12px;margin:.75rem 0 0;padding:1.25rem 1.5rem;overflow-x:auto;border:1px solid var(--border)!important;background:#f8fafc!important}.text-content-body .text-content-card pre code{color:#1e293b;padding:0;font-size:.85rem;line-height:1.6;background:0 0!important}.text-content-body .text-content-card img{object-fit:contain;aspect-ratio:16/9;border:1px solid var(--border);border-radius:12px;width:100%;height:auto;min-height:200px;max-height:400px;margin:1rem 0;display:block;background:var(--bg-app-2)!important}html.dark .text-content-body .text-content-card{box-shadow:0 8px 30px #00000080;background:#111b2e!important;border-color:#1e2a41!important}html.dark .text-content-body .text-content-card img{background:#0d1524!important;border-color:#1e2a41!important}html.dark .text-content-body .text-content-card h3{color:#e8edf5}html.dark .text-content-body .text-content-card h3 .tc-badge{color:#94a3b8!important;background:#1e2a41!important;border-color:#2d3a52!important}html.dark .text-content-body .text-content-card p{color:#d1d9e8}html.dark .text-content-body .text-content-card strong{color:#60a5fa}html.dark .text-content-body .text-content-card .hl-term{color:#a78bfa}html.dark .text-content-body .text-content-card .hl-code{color:#cbd5e1;background:#1e293b!important;border-color:#2d3a52!important}html.dark .text-content-body .text-content-card pre{background:#0d1524!important;border-color:#1e2a41!important}html.dark .text-content-body .text-content-card pre code{color:#e2e8f0}.back-nav{align-items:center;padding:.5rem 1rem 0;display:flex}.back-nav-link{color:var(--primary);border-radius:12px;align-items:center;gap:.15rem;min-height:44px;padding:.4rem .65rem;font-size:.85rem;font-weight:700;text-decoration:none;transition:background .15s;display:inline-flex}.back-nav-link:active{background:var(--primary-light)}.back-nav-link i{font-size:1.35rem}@media (min-width:768px){.back-nav{padding:.75rem 1.35rem 0}}.watch-container{padding:.85rem}.video-notes-section{background:var(--surface);border:1px solid var(--border);border-radius:12px;margin-top:1.25rem;padding:1rem}.watch-player-wrapper{aspect-ratio:16/9;background:#0f172a;border:1px solid #e2e8f0e6;border-radius:18px;width:100%;position:relative;overflow:hidden;box-shadow:0 18px 40px #0f172a1a}html.dark .watch-player-wrapper{border-color:#24324ae6}.watch-iframe{border:none;width:100%;height:100%;position:absolute;top:0;left:0}.watch-loading{background:#0f172a;place-items:center;display:grid;position:absolute;inset:0}html.dark .watch-loading{background:#000}.watch-error{background:#0f172a;flex-direction:column;justify-content:center;align-items:center;padding:2rem;display:flex;position:absolute;inset:0}.watch-actions{flex-wrap:wrap;gap:.65rem;margin-top:1rem;display:flex}.watch-actions .pill-btn{flex:1;justify-content:center;min-width:0}.related-lectures-list{flex-direction:column;gap:.65rem;display:flex}.related-lecture-card{-webkit-backdrop-filter:blur(12px);color:inherit;background:#fffffff0;border:1px solid #e2e8f0e6;border-radius:16px;gap:.75rem;padding:.65rem;text-decoration:none;transition:transform .15s;display:flex;box-shadow:0 8px 20px #0f172a0a}html.dark .related-lecture-card{background:#0f172af0;border-color:#24324ae6}.related-lecture-card:active{transform:scale(.98)}.related-lecture-thumb{aspect-ratio:16/9;background:#0f172a;border-radius:12px;flex-shrink:0;width:140px;position:relative;overflow:hidden}.related-lecture-thumb img{object-fit:cover;width:100%;height:100%}.related-lecture-body{flex-direction:column;flex:1;justify-content:center;gap:.25rem;min-width:0;display:flex}.related-lecture-title{-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:.82rem;font-weight:700;line-height:1.35;display:-webkit-box;overflow:hidden}.related-lecture-meta{color:var(--text-muted);font-size:.72rem}.pdf-viewer-root{z-index:50;-webkit-user-select:none;user-select:none;background:#e2e8f0;flex-direction:column;display:flex;position:fixed;inset:0}html.dark .pdf-viewer-root{background:#0b1523}.pdf-viewer-top-bar{border-bottom:1px solid var(--border);z-index:60;background:#fffffff5;align-items:center;gap:.5rem;padding:.5rem .6rem;display:flex}html.dark .pdf-viewer-top-bar{background:#0f172af5}.pdf-sign-fallback-notice{color:var(--text-muted);border-bottom:1px solid var(--border);background:#facc151a;justify-content:center;align-items:center;gap:.4rem;padding:.4rem .75rem;font-size:.75rem;display:flex}.pdf-sign-fallback-notice i{font-size:.85rem}.pdf-viewer-back{border:1px solid var(--border);width:38px;height:38px;color:var(--text-main);cursor:pointer;background:#fffffff2;border-radius:999px;flex-shrink:0;place-items:center;font-size:1.2rem;display:grid}html.dark .pdf-viewer-back{background:#0f172af2}.pdf-viewer-page-info{text-align:center;color:var(--text-muted);flex:1;font-size:.78rem;font-weight:700}.pdf-viewer-scroll{flex-direction:column;flex:1;align-items:center;gap:.75rem;padding:1rem .5rem;display:flex;overflow-y:auto}.pdf-viewer-page-wrap{background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 4px 16px #0f172a1f}.pdf-viewer-loading{color:var(--text-muted);flex-direction:column;justify-content:center;align-items:center;gap:.75rem;padding:4rem 2rem;display:flex}.pdf-viewer-page-loading{min-height:400px;color:var(--text-muted);justify-content:center;align-items:center;display:flex}.empty-state{text-align:center;color:var(--text-muted);padding:4rem 2rem;font-size:.92rem}.pdf-viewer-save-btn{color:#2563eb;cursor:pointer;white-space:nowrap;background:#2563eb14;border:1px solid #2563eb4d;border-radius:999px;flex-shrink:0;align-items:center;gap:.35rem;padding:.4rem .8rem;font-size:.72rem;font-weight:700;display:inline-flex}.pdf-viewer-save-btn.saved{color:#d97706;background:#f59e0b14;border-color:#f59e0b4d}html.dark .pdf-viewer-save-btn{background:#2563eb26}html.dark .pdf-viewer-save-btn.saved{background:#f59e0b26}.pdf-viewer-night-btn{border:1px solid var(--border);width:38px;height:38px;color:var(--text-main);cursor:pointer;background:#fffffff2;border-radius:999px;flex-shrink:0;place-items:center;font-size:1.05rem;display:grid}html.dark .pdf-viewer-night-btn{background:#0f172af2}.pdf-viewer-night-btn.active{color:#2563eb;background:#2563eb1f;border-color:#2563eb66}.pdf-page-canvas-host{width:100%}.pdf-viewer-scroll.night-mode .pdf-viewer-page-wrap{background:#000;box-shadow:0 4px 16px #00000073}.pdf-viewer-scroll.night-mode{background:#0b1523}.pdf-viewer-page-wrap{position:relative}.pdf-annot-layer{z-index:5;pointer-events:none;border-radius:inherit;position:absolute;inset:0;overflow:hidden}.pdf-annot-layer.interactive{pointer-events:auto}.pdf-annot-layer .pdf-annot-ink{width:100%;height:100%;position:absolute;inset:0;overflow:visible}.pdf-annot-layer .pdf-annot-ink path{pointer-events:none}.pdf-annot-layer.deleting .pdf-annot-ink path.pdf-annot-ink-hit{pointer-events:stroke;cursor:pointer}.pdf-annot-highlight{pointer-events:none;border-radius:2px;display:block;position:absolute}.pdf-annot-layer.deleting .pdf-annot-highlight{pointer-events:auto;cursor:pointer;outline:1px dashed #ef4444b3}.pdf-annot-note-marker{color:#fff;cursor:pointer;pointer-events:auto;z-index:7;border:2px solid #ffffffe6;border-radius:999px;place-items:center;width:24px;height:24px;display:grid;position:absolute;transform:translate(-50%,-50%);box-shadow:0 2px 8px #0f172a59}.pdf-annot-note-marker i{font-size:.8rem}.pdf-annot-note-card{border:1px solid var(--border);z-index:8;background:#fff;border-radius:12px;flex-direction:column;gap:.45rem;width:230px;padding:.5rem;display:flex;position:absolute;top:calc(100% + 10px);left:50%;transform:translate(-50%);box-shadow:0 8px 24px #0f172a40}.pdf-annot-note-input{border:1px solid var(--border);width:100%;color:var(--text-main);resize:none;background:#fff;border-radius:8px;padding:.4rem .5rem;font-family:inherit;font-size:.82rem;line-height:1.4}.pdf-annot-note-input:focus{outline-offset:-1px;outline:2px solid #2563eb66}.pdf-annot-note-actions{justify-content:flex-end;align-items:center;gap:.4rem;display:flex}.pdf-annot-note-save{color:#fff;cursor:pointer;background:#2563eb;border:none;border-radius:999px;align-items:center;gap:.3rem;padding:.4rem .8rem;font-size:.72rem;font-weight:700;display:inline-flex}.pdf-annot-note-delete{border:1px solid var(--border);width:30px;height:30px;color:var(--text-muted);cursor:pointer;background:0 0;border-radius:999px;justify-content:center;align-items:center;font-size:.9rem;display:inline-flex}.pdf-viewer-root.annotations-active .pdf-viewer-scroll{padding-bottom:10rem}.pdf-annot-toolbar{bottom:calc(env(safe-area-inset-bottom) + 5.9rem);z-index:70;flex-direction:column;align-items:center;gap:.4rem;width:max-content;max-width:calc(100vw - 16px);display:flex;position:absolute;left:50%;transform:translate(-50%)}.pdf-annot-toolbar-row{-webkit-backdrop-filter:blur(8px);background:#0f172af0;border:1px solid #ffffff1f;border-radius:999px;align-items:center;gap:.25rem;padding:.35rem;display:flex;box-shadow:0 6px 20px #00000059}.pdf-annot-toolbar-row-secondary{padding:.3rem .6rem}.pdf-annot-tool-btn{color:#ffffffbf;cursor:pointer;background:0 0;border:none;border-radius:999px;flex-shrink:0;place-items:center;width:42px;height:42px;font-size:1.2rem;display:grid}.pdf-annot-tool-btn:active{transform:scale(.92)}.pdf-annot-tool-btn.active{color:#fff;background:#2563eb}.pdf-annot-toolbar-divider{background:#ffffff2e;flex-shrink:0;width:1px;height:20px;margin:0 .15rem}.pdf-annot-color-dot{cursor:pointer;border:2px solid #ffffff59;border-radius:999px;flex-shrink:0;width:24px;height:24px;padding:0}.pdf-annot-color-dot.active{border-color:#fff;box-shadow:0 0 0 2px #2563eb}.pdf-annot-width-dot{cursor:pointer;background:0 0;border:2px solid #ffffff59;border-radius:999px;flex-shrink:0;place-items:center;width:28px;height:28px;padding:0;display:grid}.pdf-annot-width-dot span{background:#fff;border-radius:999px;display:block}.pdf-annot-width-dot.active{border-color:#fff;box-shadow:0 0 0 2px #2563eb}.pdf-annot-toolbar-hint{color:#ffffffd9;white-space:nowrap;background:#0f172ab3;border:1px solid #ffffff1f;border-radius:999px;padding:.3rem .9rem;font-size:.7rem}.pdf-annot-toolbar-tab{color:#ffffffd9;cursor:pointer;-webkit-backdrop-filter:blur(8px);z-index:70;background:#0f172af0;border:1px solid #ffffff1f;border-radius:999px;place-items:center;width:44px;height:44px;font-size:1.2rem;display:grid;position:absolute;top:50%;right:8px;transform:translateY(-50%);box-shadow:0 6px 20px #00000059}.pdf-annot-toolbar-tab:active{transform:translateY(-50%)scale(.92)}.pdf-annot-toast{left:50%;bottom:calc(env(safe-area-inset-bottom) + 9rem);z-index:80;color:#fff;text-align:center;background:#0f172af0;border-radius:999px;max-width:calc(100vw - 32px);padding:.55rem 1rem;font-size:.75rem;animation:.18s pdfAnnotToastIn;position:absolute;transform:translate(-50%);box-shadow:0 6px 20px #00000059}@keyframes pdfAnnotToastIn{0%{opacity:0;transform:translate(-50%)translateY(6px)}to{opacity:1;transform:translate(-50%)translateY(0)}}.pdf-viewer-root.pdf-annot-highlight-mode .react-pdf__Page .textLayer,.pdf-viewer-root.pdf-annot-highlight-mode .react-pdf__Page .textLayer span{cursor:text;-webkit-user-select:text!important;user-select:text!important}.pdf-viewer-root.pdf-annot-highlight-mode .pdf-viewer-scroll{cursor:text}.offline-saved-date{color:var(--text-muted);white-space:nowrap;margin-left:auto;font-size:.68rem}.offline-delete-btn{width:32px;height:32px;color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:999px;flex-shrink:0;justify-content:center;align-items:center;font-size:1.1rem;display:inline-flex}.offline-delete-btn:hover{color:#ef4444;background:#ef44441a}@media (min-width:768px){.watch-container{padding:.85rem 1.35rem}.related-lectures-list{grid-template-columns:repeat(2,1fr);display:grid}}.admin-login-page{flex-direction:column;align-items:center;max-width:400px;margin:0 auto;padding:2rem 1.5rem 3rem;display:flex}.admin-login-icon{background:linear-gradient(135deg, var(--primary), #1d4ed8);border-radius:20px;justify-content:center;align-items:center;width:64px;height:64px;margin-bottom:1.25rem;display:flex;box-shadow:0 12px 28px #2563eb40}.admin-login-icon i{color:#fff;font-size:2rem}.admin-login-title{text-align:center;margin-bottom:.35rem;font-size:1.5rem;font-weight:800}.admin-login-desc{color:var(--text-muted);text-align:center;margin-bottom:1.5rem;font-size:.9rem}.admin-login-card{border:1px solid var(--border);background:var(--bg-card);border-radius:20px;width:100%;padding:1.25rem}.admin-login-field{margin-bottom:1rem}.admin-login-label{text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-bottom:.4rem;font-size:.75rem;font-weight:700;display:block}.admin-login-input{border:1px solid var(--border);background:var(--bg-app);width:100%;color:var(--text-main);border-radius:12px;outline:none;padding:.8rem 1rem;font-size:1rem;transition:border-color .2s,box-shadow .2s}.admin-login-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2563eb1f}.admin-login-input::placeholder{color:var(--text-muted);opacity:.6}.admin-login-error{color:#b91c1c;background:#fef2f2;border:1px solid #fecaca;border-radius:10px;align-items:center;gap:.4rem;margin-bottom:.75rem;padding:.6rem .8rem;font-size:.82rem;display:flex}html.dark .admin-login-error{color:#fca5a5;background:#7f1d1d40;border-color:#dc262659}.admin-login-error i{flex-shrink:0;font-size:1.1rem}.admin-login-btn{background:linear-gradient(135deg, var(--primary), #1d4ed8);color:#fff;cursor:pointer;border:none;border-radius:12px;justify-content:center;align-items:center;gap:.5rem;width:100%;padding:.75rem;font-size:.95rem;font-weight:700;transition:transform .15s,box-shadow .15s;display:flex;box-shadow:0 8px 20px #2563eb40}.admin-login-btn:active{transform:scale(.98)}.admin-dashboard{padding:0 1rem 2rem}.admin-header{justify-content:space-between;align-items:center;gap:.75rem;padding:1rem 0;display:flex}.admin-title{font-size:1.35rem;font-weight:800;line-height:1.2}.admin-subtitle{color:var(--text-muted);margin-top:.15rem;font-size:.82rem}.admin-header-actions{flex-shrink:0;gap:.4rem;display:flex}.admin-btn{cursor:pointer;white-space:nowrap;border:none;border-radius:12px;justify-content:center;align-items:center;gap:.35rem;font-weight:700;text-decoration:none;transition:all .15s;display:inline-flex}.admin-btn i{font-size:1.1rem}.admin-btn-primary{background:linear-gradient(135deg, var(--primary), #1d4ed8);color:#fff;padding:.55rem .9rem;font-size:.82rem;box-shadow:0 6px 16px #2563eb33}.admin-btn-primary:active{transform:scale(.97)}.admin-btn-outline{background:var(--bg-card);color:var(--text-main);border:1px solid var(--border);padding:.5rem .85rem;font-size:.8rem}.admin-btn-outline:active{background:var(--bg-app-2)}.admin-btn-ghost{color:var(--text-muted);border:1px solid var(--border);background:0 0;min-width:38px;min-height:38px;padding:.5rem;font-size:.8rem}.admin-btn-ghost:active{background:var(--bg-app-2)}.admin-btn-sm{padding:.4rem .7rem;font-size:.75rem}.admin-btn-active{background:var(--primary-light);color:var(--primary);border:1px solid var(--primary);padding:.4rem .7rem;font-size:.75rem}.admin-btn-danger{color:#ef4444;background:0 0;border:1px solid #fecaca;padding:.4rem .7rem;font-size:.75rem}html.dark .admin-btn-danger{border-color:#ef44444d}.admin-btn:disabled{opacity:.5;cursor:not-allowed}.admin-loading{color:var(--text-muted);flex-direction:column;align-items:center;gap:.6rem;padding:3rem 1rem;display:flex}.admin-loading i{font-size:2rem}.admin-loading p{font-size:.9rem}.admin-alert{border-radius:12px;align-items:flex-start;gap:.5rem;margin-bottom:.75rem;padding:.75rem .9rem;font-size:.82rem;line-height:1.4;display:flex}.admin-alert i{flex-shrink:0;margin-top:1px;font-size:1.15rem}.admin-alert-error{color:#b91c1c;background:#fef2f2;border:1px solid #fecaca}html.dark .admin-alert-error{color:#fca5a5;background:#7f1d1d33;border-color:#dc26264d}.admin-alert-info{background:var(--bg-app-2);border:1px solid var(--border);color:var(--text-muted)}.admin-toolbar{justify-content:space-between;align-items:center;margin-bottom:.65rem;display:flex}.admin-count{color:var(--text-muted);font-size:.82rem;font-weight:600}.admin-filters-bar{border:1px solid var(--border);background:var(--bg-card);border-radius:16px;flex-direction:column;gap:.5rem;margin-bottom:1rem;padding:.85rem;display:flex}.admin-filter-group{flex-direction:column;gap:.25rem;display:flex}.admin-filter-label{text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);font-size:.7rem;font-weight:700}.admin-filter-select{border:1px solid var(--border);background:var(--bg-app);width:100%;color:var(--text-main);appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-position:right .75rem center;background-repeat:no-repeat;border-radius:10px;outline:none;padding:.6rem .8rem;font-size:.85rem;transition:border-color .2s}.admin-filter-select:focus{border-color:var(--primary)}.admin-filter-select:disabled{opacity:.4;cursor:not-allowed}.admin-empty{color:var(--text-muted);text-align:center;flex-direction:column;align-items:center;gap:.5rem;padding:3rem 1rem;display:flex}.admin-empty i{font-size:2.5rem}.admin-empty p{font-size:.88rem}.admin-groups{flex-direction:column;gap:1.25rem;display:flex}.admin-group-head{justify-content:space-between;align-items:center;margin-bottom:.5rem;display:flex}.admin-group-title{color:var(--text-main);align-items:center;gap:.35rem;font-size:.85rem;font-weight:700;display:flex}.admin-group-title i{color:var(--primary);font-size:1rem}.admin-group-count{color:var(--text-muted);background:var(--bg-app-2);border-radius:8px;padding:.2rem .55rem;font-size:.72rem;font-weight:600}.admin-notes-grid{flex-direction:column;gap:.5rem;display:flex}.admin-note-card{border:1px solid var(--border);background:var(--bg-card);border-radius:14px;transition:box-shadow .15s;overflow:hidden}.admin-note-linked{border-color:#2563eb40}.admin-note-top{align-items:flex-start;gap:.65rem;padding:.75rem .8rem .4rem;display:flex}.admin-note-icon{background:var(--bg-app-2);border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;display:flex}.admin-note-icon i{color:var(--primary);font-size:1.15rem}.admin-note-icon .bx-pencil{color:#d97706}.admin-note-info{flex:1;min-width:0}.admin-note-name{word-break:break-word;color:var(--text-main);font-size:.88rem;font-weight:600;line-height:1.35}.admin-note-unit{color:var(--text-muted);margin-top:.15rem;font-size:.75rem;line-height:1.3}.admin-note-badges{flex-wrap:wrap;gap:.3rem;padding:.25rem .8rem .5rem;display:flex}.admin-badge{white-space:nowrap;border-radius:6px;align-items:center;gap:.2rem;padding:.2rem .55rem;font-size:.65rem;font-weight:700;display:inline-flex}.admin-badge-pdf{background:var(--primary-light);color:var(--primary)}.admin-badge-hw{color:#d97706;background:#f59e0b1a}html.dark .admin-badge-hw{background:#f59e0b26}.admin-badge-date{background:var(--bg-app-2);color:var(--text-muted)}.admin-badge-video{color:var(--primary);background:#2563eb14}.admin-badge-video i{font-size:.7rem}.admin-note-actions{gap:.35rem;padding:.35rem .8rem .75rem;display:flex}.admin-note-actions .admin-btn{flex:1}.admin-link-panel{border-top:1px solid var(--border);background:var(--bg-app);padding:.7rem .8rem}.admin-link-panel-title{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.4rem;font-size:.72rem;font-weight:700}.admin-link-select{border:1px solid var(--border);background:var(--bg-card);width:100%;color:var(--text-main);appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-position:right .7rem center;background-repeat:no-repeat;border-radius:10px;outline:none;margin-bottom:.5rem;padding:.6rem .75rem;font-size:.8rem}.admin-link-btns{gap:.35rem;display:flex}.admin-link-btns .admin-btn{flex:1}@media (min-width:640px){.admin-filters-bar{flex-direction:row;gap:.65rem}.admin-filter-group{flex:1}.admin-notes-grid{grid-template-columns:repeat(2,1fr);gap:.65rem;display:grid}}@media (min-width:1024px){.admin-dashboard{max-width:960px;margin:0 auto}.admin-header{padding:1.25rem 0}.admin-title{font-size:1.6rem}.admin-notes-grid{grid-template-columns:repeat(3,1fr);gap:.75rem}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.pwa-steps{flex-direction:column;padding:.75rem 0;display:flex}.share-qr-wrap{background:var(--card-bg);-webkit-backdrop-filter:blur(16px);border:1px solid var(--card-border);width:100%;box-shadow:var(--card-shadow), var(--neuro-shadow-outer);border-radius:18px;justify-content:center;align-items:center;padding:1.5rem;display:flex}.share-qr-wrap img{border-radius:16px;width:auto;max-width:220px;height:auto}.pwa-step{align-items:flex-start;gap:1rem;padding:1rem;display:flex;position:relative}.pwa-step:not(:last-child):after{content:"";background:linear-gradient(to bottom, var(--primary), #2563eb26);width:2px;position:absolute;top:3rem;bottom:-1rem;left:1.5rem}.pwa-step-num{background:linear-gradient(135deg, var(--primary), #0ea5e9);color:#fff;border-radius:12px;flex-shrink:0;justify-content:center;align-items:center;width:2rem;height:2rem;font-size:.8rem;font-weight:800;display:inline-flex;box-shadow:0 4px 12px #2563eb4d}.pwa-step-content{flex:1;padding-top:.15rem}.pwa-step-content h4{color:var(--text);margin:0 0 .2rem;font-size:.88rem;font-weight:700}.pwa-step-content p{color:var(--text-muted);margin:0;font-size:.82rem;line-height:1.5}.pwa-step-content strong{color:var(--text);font-weight:700}.legal-content{padding:0 1.25rem 2rem}.legal-content h3{color:var(--text);margin:1.5rem 0 .5rem;font-size:1rem;font-weight:800}.legal-content p{color:var(--text-muted);margin:0 0 .75rem;font-size:.88rem;line-height:1.6}.legal-content ul{margin:0 0 .75rem;padding-left:1.25rem}.legal-content li{color:var(--text-muted);margin-bottom:.35rem;font-size:.85rem;line-height:1.6}.legal-content a{color:var(--primary);text-underline-offset:2px;text-decoration:underline}.legal-content a:hover{opacity:.8}body.gallery-fullscreen .site-nav,body.gallery-fullscreen .app-header,body.gallery-fullscreen .offline-banner,body.gallery-fullscreen .route-progress,body.gallery-fullscreen .welcome-hero,body.gallery-fullscreen .section-headline,body.gallery-fullscreen .subject-stack,body.gallery-fullscreen .app-card,body.gallery-fullscreen .back-nav,body.gallery-fullscreen footer{visibility:hidden!important;opacity:0!important;height:0!important;display:none!important;overflow:hidden!important}body.gallery-fullscreen{background:#000!important;width:100%!important;height:100%!important;position:fixed!important;overflow:hidden!important}body.gallery-fullscreen .app-shell,body.gallery-fullscreen .app-main,body.gallery-fullscreen main{background:#000!important;height:100vh!important;min-height:100vh!important;margin:0!important;padding:0!important;overflow:hidden!important}.gallery-overlay{z-index:2147483647;overscroll-behavior:none;contain:strict;background:#000;flex-direction:column;width:100vw;height:100dvh;display:flex;position:fixed;top:0;left:0}.gallery-top-bar{background:#000000d9;flex-shrink:0;justify-content:space-between;align-items:center;gap:.5rem;min-height:52px;padding:.5rem 1rem;display:flex}.gallery-top-bar-right{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:.35rem;display:flex}.gallery-icon-btn{color:#fff;cursor:pointer;background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;min-width:40px;min-height:40px;padding:.4rem;font-size:24px;transition:background .15s;display:flex}.gallery-icon-btn:active{background:#ffffff26}.gallery-counter{color:#fff;letter-spacing:.02em;font-size:.9rem;font-weight:600}.gallery-swipe-area{flex:1;width:100%;min-height:0;overflow:hidden}.gallery-track{scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none;-ms-overflow-style:none;width:100%;height:100%;display:flex;overflow:scroll hidden}.gallery-track::-webkit-scrollbar{display:none}.gallery-slide{scroll-snap-align:center;scroll-snap-stop:always;flex:0 0 100%;justify-content:center;align-items:center;width:100vw;height:100%;display:flex;position:relative;overflow:visible}.gallery-img-inner{will-change:transform;transform-origin:50%;justify-content:center;align-items:center;width:100%;height:100%;display:flex}.gallery-slide-rotated{overflow:visible}.gallery-slide-rotated .gallery-img-inner{width:100vh;height:100vw}.gallery-full-img{object-fit:contain;-webkit-user-select:none;user-select:none;-webkit-user-drag:none;-webkit-touch-callout:none;pointer-events:none;width:100%;height:100%}.gallery-bottom-bar{text-align:center;background:#000000d9;flex-shrink:0;justify-content:center;align-items:center;min-height:36px;padding:.5rem 1rem;display:flex}.gallery-filename{color:#ffffffb3;white-space:nowrap;text-overflow:ellipsis;max-width:100%;font-size:.78rem;overflow:hidden}.gallery-menu{z-index:10;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#141414f2;border-radius:12px;flex-direction:column;gap:.35rem;min-width:160px;padding:.5rem;display:flex;position:absolute;top:52px;right:.5rem;box-shadow:0 8px 30px #00000080}.gallery-menu-btn{color:#fff;cursor:pointer;text-align:left;background:#ffffff14;border:none;border-radius:8px;align-items:center;gap:.55rem;padding:.6rem .75rem;font-size:.82rem;font-weight:500;transition:background .15s;display:flex}.gallery-menu-btn:hover{background:#ffffff26}.gallery-menu-btn:disabled{opacity:.35;cursor:default}.gallery-menu-btn i{font-size:16px}.gallery-menu-save{background:#2563eb;margin-top:.2rem}.gallery-menu-save:hover{background:#1d4ed8!important}.gallery-crop-container{touch-action:none;flex-direction:column;flex:1;min-height:0;display:flex}.gallery-crop-area{touch-action:none;-webkit-user-select:none;user-select:none;background:#000;flex:1;justify-content:center;align-items:center;min-height:0;display:flex;position:relative;overflow:hidden}.gallery-crop-img{object-fit:contain;opacity:.4;pointer-events:none;-webkit-user-select:none;user-select:none;max-width:100%;max-height:100%}.gallery-crop-overlay{cursor:move;touch-action:none;z-index:2;-webkit-user-select:none;user-select:none;border:2px solid #fff;position:absolute;box-shadow:0 0 0 9999px #0000008c}.gallery-crop-move{cursor:move;touch-action:none;position:absolute;inset:0}.gallery-crop-handle{z-index:3;touch-action:none;background:#fff;border-radius:50%;width:24px;height:24px;position:absolute;box-shadow:0 2px 6px #0006}.gallery-crop-handle-top{cursor:ns-resize;top:-12px;left:50%;transform:translate(-50%)}.gallery-crop-handle-bottom{cursor:ns-resize;bottom:-12px;left:50%;transform:translate(-50%)}.gallery-crop-handle-left{cursor:ew-resize;top:50%;left:-12px;transform:translateY(-50%)}.gallery-crop-handle-right{cursor:ew-resize;top:50%;right:-12px;transform:translateY(-50%)}.gallery-crop-handle-tl{cursor:nwse-resize;top:-12px;left:-12px}.gallery-crop-handle-tr{cursor:nesw-resize;top:-12px;right:-12px}.gallery-crop-handle-bl{cursor:nesw-resize;bottom:-12px;left:-12px}.gallery-crop-handle-br{cursor:nwse-resize;bottom:-12px;right:-12px}.gallery-crop-actions{background:#000000d9;flex-shrink:0;gap:.75rem;padding:.75rem 1rem;display:flex}.gallery-crop-btn{color:#fff;cursor:pointer;background:#ffffff1f;border:none;border-radius:10px;flex:1;padding:.7rem 1rem;font-size:.88rem;font-weight:600}.gallery-crop-apply{background:#2563eb}.gallery-compare{flex-direction:column;flex:1;justify-content:center;align-items:center;gap:.25rem;min-height:0;padding:.5rem;display:flex}.gallery-compare-row{flex-direction:column;flex:1;gap:.25rem;width:100%;min-height:0;padding-bottom:60px;display:flex}.gallery-compare-half{flex-direction:column;flex:1;justify-content:center;align-items:center;min-height:0;display:flex;position:relative;overflow:hidden}.gallery-compare-label{color:#fff;z-index:2;background:#0009;border-radius:999px;padding:.1rem .4rem;font-size:.55rem;font-weight:600;position:absolute;top:.2rem;left:50%;transform:translate(-50%)}.gallery-compare-img{object-fit:contain;pointer-events:none;max-width:95%;max-height:95%}.gallery-compare-actions{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:100;background:#000000e6;gap:.5rem;padding:.6rem 1rem;display:flex;position:fixed;bottom:0;left:0;right:0}.gallery-compare-btn{color:#fff;cursor:pointer;background:#ffffff1f;border:none;border-radius:10px;flex:1;padding:.55rem;font-size:.8rem;font-weight:600}.gallery-compare-btn-apply{background:#2563eb}.gallery-grid{grid-template-columns:repeat(auto-fill,minmax(80px,1fr));gap:2px;display:grid}.gallery-item{aspect-ratio:1;background:var(--bg-muted);cursor:pointer;position:relative;overflow:hidden}.gallery-thumb{object-fit:cover;width:100%;height:100%;display:block}.gallery-placeholder{justify-content:center;align-items:center;width:100%;height:100%;display:flex}.gallery-placeholder i{color:var(--text-muted);font-size:18px}.gallery-del{cursor:pointer;background:#00000080;border:none;border-radius:50%;justify-content:center;align-items:center;width:18px;height:18px;padding:0;display:flex;position:absolute;top:2px;right:2px}.gallery-del i{color:#fff;font-size:10px}.gallery-fav{cursor:pointer;color:#fff;z-index:2;background:#00000080;border:none;border-radius:50%;justify-content:center;align-items:center;width:26px;height:26px;padding:0;display:flex;position:absolute;top:2px;left:2px}.gallery-fav i{color:#fff;font-size:13px}.gallery-fav.active{background:#d97706eb}.gallery-fav.active i{color:#fde68a}.gallery-icon-btn.active{color:#fbbf24}.gallery-filter-btn{border:1px solid var(--border);background:var(--bg-app);width:100%;color:var(--text);cursor:pointer;border-radius:10px;justify-content:space-between;align-items:center;padding:.5rem .75rem;font-size:.82rem;display:flex}.gallery-filter-row{align-items:stretch;gap:.5rem;display:flex}.gallery-fav-filter{border:1px solid var(--border);background:var(--bg-app);color:var(--text-muted);cursor:pointer;white-space:nowrap;border-radius:10px;align-items:center;gap:.35rem;padding:.5rem .75rem;font-size:.82rem;font-weight:600;transition:all .15s;display:flex}.gallery-fav-filter.active{color:#d97706;background:#facc151f;border-color:#fbbf24}html.dark .gallery-fav-filter.active{background:#facc1526}.gallery-dropdown{border:1px solid var(--border);background:var(--bg-app);z-index:50;border-radius:12px;max-height:300px;margin-top:4px;position:absolute;top:100%;left:0;right:0;overflow-y:auto;box-shadow:0 8px 30px #0000001f}.gallery-dropdown-head{text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);background:var(--bg-muted);padding:.5rem .75rem .3rem;font-size:.68rem;font-weight:700;position:sticky;top:0}.gallery-dropdown-item{cursor:pointer;align-items:center;gap:.55rem;padding:.5rem .75rem;font-size:.78rem;display:flex}.gallery-dropdown-item.active{background:var(--bg-muted)}.gallery-dropdown-item input{accent-color:#2563eb;width:15px;height:15px}.gallery-chips{flex-wrap:wrap;gap:.3rem;margin-top:.4rem;display:flex}.gallery-chip{background:var(--primary);color:#fff;cursor:pointer;border-radius:999px;align-items:center;gap:.25rem;padding:.25rem .5rem;font-size:.68rem;font-weight:600;display:inline-flex}.gallery-chip i{font-size:11px}.gallery-chip-clear{background:var(--bg-muted);color:var(--text-muted);cursor:pointer;border-radius:999px;align-items:center;padding:.25rem .5rem;font-size:.68rem;display:inline-flex}.csb-minimal-btn{color:var(--primary);border:1px solid var(--border);border-radius:8px;margin-top:1rem;padding:.45rem 1rem;font-size:.82rem;font-weight:500;text-decoration:none;transition:background .15s;display:inline-block}.csb-minimal-btn:hover{background:var(--primary-light)}.course-pdf-cta{margin-top:.75rem}.course-pdf-toggle{display:none}.course-pdf-toggle:checked+.csb-minimal-btn:after{content:"hide";opacity:.7;letter-spacing:.03em;margin-left:.4rem;font-size:.65rem;font-weight:700}.course-pdf-toggle:checked~.course-overview-panel{display:block}.course-overview-panel{border:1px solid var(--border);background:var(--bg-app);border-radius:10px;margin-top:.65rem;padding:.7rem .85rem;display:none}html.dark .course-overview-panel{background:#0f172a99}.course-overview-coming{color:var(--text-muted);font-size:.85rem;font-style:italic}.cc-units-list{flex-direction:column;gap:1rem;margin-top:1rem;padding:0 .85rem 2rem;display:flex}.cc-unit{background:var(--bg-card);border:1px solid var(--border);border-radius:14px;padding:1.2rem;box-shadow:0 2px 8px #0f172a0a}.cc-unit-header{border-bottom:1px solid var(--border);align-items:flex-start;gap:.75rem;margin-bottom:1rem;padding-bottom:.75rem;display:flex}.cc-unit-num{color:#fff;background:#2563eb;border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:.9rem;font-weight:700;display:flex}.cc-unit-info{flex:1}.cc-unit-title{color:#1e40af;margin:0;font-size:1rem;font-weight:700}.cc-unit-summary{color:#64748b;margin:.25rem 0 0;font-size:.98rem}.cc-topics{flex-direction:column;gap:.9rem;display:flex}.cc-topic{padding-left:.5rem}.cc-topic-header{align-items:center;gap:.5rem;margin-bottom:.45rem;display:flex}.cc-topic-icon{color:#7c3aed;font-size:.95rem}.cc-topic-title{color:#7c3aed;font-size:.88rem;font-weight:600}.cc-subtopics{flex-direction:column;gap:.3rem;margin:0;padding:0 0 0 1.4rem;list-style:none;display:flex}.cc-subtopic{color:#64748b;align-items:flex-start;gap:.45rem;font-size:.88rem;line-height:1.45;display:flex}.cc-subtopic-arrow{color:#94a3b8;flex-shrink:0;margin-top:.3rem;font-size:.65rem}.cc-pdf-link{color:#2563eb;font-weight:500;text-decoration:none}.cc-pdf-link:hover{text-decoration:underline}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-space-y-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-leading{syntax:"*";inherits:false}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-tracking{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-y{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-z{syntax:"*";inherits:false;initial-value:0}