@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-border-style:solid;--tw-outline-style:solid;--tw-backdrop-blur:initial;--tw-backdrop-brightness:initial;--tw-backdrop-contrast:initial;--tw-backdrop-grayscale:initial;--tw-backdrop-hue-rotate:initial;--tw-backdrop-invert:initial;--tw-backdrop-opacity:initial;--tw-backdrop-saturate:initial;--tw-backdrop-sepia:initial;--tw-ease:initial}}}@layer theme{:root,:host{--font-sans:"Inter", sans-serif;--font-mono:"JetBrains Mono", monospace;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--ease-in-out:cubic-bezier(.4, 0, .2, 1);--default-transition-duration:.15s;--default-transition-timing-function:cubic-bezier(.4, 0, .2, 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components;@layer utilities{.invisible{visibility:hidden}.static{position:static}.block{display:block}.flex{display:flex}.flex-shrink{flex-shrink:1}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.border{border-style:var(--tw-border-style);border-width:1px}.outline{outline-style:var(--tw-outline-style);outline-width:1px}.backdrop-filter{-webkit-backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,)}.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))}.ease-in-out{--tw-ease:var(--ease-in-out);transition-timing-function:var(--ease-in-out)}}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;color-scheme:dark}html,body{background-color:var(--color-bg);height:100%;font-family:var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:15px}body{overflow-x:hidden}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:0 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--tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}@property --tw-ease{syntax:"*";inherits:false}#course-header[data-astro-cid-nwmia27i]{position:sticky;top:0;z-index:100;height:56px;border-bottom:1px solid var(--color-border);background:#08090ad9;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}.header-inner[data-astro-cid-nwmia27i]{display:flex;align-items:center;justify-content:space-between;height:100%;padding:0 1.25rem}.logo[data-astro-cid-nwmia27i]{display:flex;align-items:center;gap:10px}.logo-icon[data-astro-cid-nwmia27i]{width:34px;height:34px;background:linear-gradient(135deg,var(--color-accent),var(--color-indigo));border-radius:9px;display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0;box-shadow:0 0 16px #7c3aed59}.logo-icon[data-astro-cid-nwmia27i] 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var(--color-border2);color:var(--color-muted);border-radius:var(--radius-sm);cursor:pointer;transition:all .15s ease}.nav-btn[data-astro-cid-hbhdmhem] svg[data-astro-cid-hbhdmhem]{width:13px;height:13px}.nav-btn[data-astro-cid-hbhdmhem]:hover:not(:disabled){background:var(--color-surface2);color:var(--color-text);border-color:#ffffff26}.nav-btn[data-astro-cid-hbhdmhem]:disabled{opacity:.3;cursor:not-allowed}.nav-btn--primary[data-astro-cid-hbhdmhem]:not(:disabled){background:#7c3aed1f;border-color:#7c3aed4d;color:var(--color-accent3)}.nav-btn--primary[data-astro-cid-hbhdmhem]:hover:not(:disabled){background:#7c3aed38;border-color:#7c3aed80;color:#c4b5fd}.progress-card[data-astro-cid-hbhdmhem]{padding:1rem;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md)}.progress-header[data-astro-cid-hbhdmhem]{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.progress-label[data-astro-cid-hbhdmhem]{font-size:12.5px;color:var(--color-muted);font-weight:500}.progress-pct[data-astro-cid-hbhdmhem]{font-family:var(--font-mono);font-size:12px;color:var(--color-accent3)}.progress-track[data-astro-cid-hbhdmhem]{height:5px;background:var(--color-border2);border-radius:9999px;overflow:hidden}.progress-fill[data-astro-cid-hbhdmhem]{height:100%;width:0%;background:linear-gradient(90deg,var(--color-accent),var(--color-indigo));border-radius:9999px;transition:width .5s cubic-bezier(.4,0,.2,1)}.progress-footer[data-astro-cid-hbhdmhem]{display:flex;justify-content:space-between;align-items:center;margin-top:9px}.progress-count[data-astro-cid-hbhdmhem]{font-size:12px;color:var(--color-muted2);font-family:var(--font-mono)}.progress-save[data-astro-cid-hbhdmhem]{font-size:11.5px;color:var(--color-muted2);display:flex;align-items:center;gap:4px}.progress-save[data-astro-cid-hbhdmhem] svg[data-astro-cid-hbhdmhem]{width:11px;height:11px;color:var(--color-success)}@media(max-width:768px){.player-nav[data-astro-cid-hbhdmhem]{display:flex}.progress-footer[data-astro-cid-hbhdmhem]{flex-direction:column;align-items:flex-start;gap:4px}}.video-card[data-astro-cid-g6m6frnh]{display:flex;align-items:center;gap:10px;padding:10px 1rem;cursor:pointer;border-bottom:1px solid var(--color-border);transition:background .12s 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.15s}.sidebar[data-astro-cid-6munbmg7]{display:flex;flex-direction:column;background:var(--color-surface);border-left:1px solid var(--color-border);overflow:hidden}.sidebar-head[data-astro-cid-6munbmg7]{padding:1rem;border-bottom:1px solid var(--color-border);flex-shrink:0;display:flex;flex-direction:column;gap:6px}.sidebar-head-top[data-astro-cid-6munbmg7]{display:flex;align-items:center;justify-content:space-between}.sidebar-label[data-astro-cid-6munbmg7]{font-size:12.5px;font-weight:600;color:var(--color-text);letter-spacing:.1px}.sidebar-count[data-astro-cid-6munbmg7]{font-family:var(--font-mono);font-size:11px;color:var(--color-accent3);background:#7c3aed1a;border:1px solid rgba(124,58,237,.2);padding:2px 7px;border-radius:4px}.sidebar-desc[data-astro-cid-6munbmg7]{font-size:11.5px;color:var(--color-muted2);line-height:1.5}.sidebar-progress[data-astro-cid-6munbmg7]{display:flex;align-items:center;gap:8px;margin-top:4px}.sidebar-progress-track[data-astro-cid-6munbmg7]{flex:1;height:3px;background:var(--color-border2);border-radius:9999px;overflow:hidden}.sidebar-progress-fill[data-astro-cid-6munbmg7]{height:100%;width:0%;background:linear-gradient(90deg,var(--color-accent),var(--color-indigo));border-radius:9999px;transition:width .5s cubic-bezier(.4,0,.2,1)}.sidebar-progress-text[data-astro-cid-6munbmg7]{font-size:11px;font-family:var(--font-mono);color:var(--color-muted2);white-space:nowrap}.sidebar-list[data-astro-cid-6munbmg7]{overflow-y:auto;flex:1}.sidebar-list[data-astro-cid-6munbmg7]::-webkit-scrollbar{width:3px}.sidebar-list[data-astro-cid-6munbmg7]::-webkit-scrollbar-track{background:transparent}.sidebar-list[data-astro-cid-6munbmg7]::-webkit-scrollbar-thumb{background:var(--color-border2);border-radius:4px}.course-layout[data-astro-cid-j7pv25f6]{display:grid;grid-template-columns:1fr 300px;max-width:100vw;overflow-x:hidden;height:calc(100vh - 56px)}.course-main[data-astro-cid-j7pv25f6]{overflow-y:auto;padding:1.25rem;display:flex;flex-direction:column;gap:.875rem}@media(max-width:900px){.course-layout[data-astro-cid-j7pv25f6]{grid-template-columns:1fr 260px}}@media(max-width:768px){.course-layout[data-astro-cid-j7pv25f6]{grid-template-columns:1fr;grid-template-rows:auto 1fr;height:auto;overflow:visible}.course-main[data-astro-cid-j7pv25f6]{padding:.875rem;overflow:visible}.sidebar{height:400px;border-left:none!important;border-top:1px solid var(--color-border)!important}}