@import"https://fonts.googleapis.com/css2?family=Manrope:wght@500;600;700;800&family=Noto+Sans+SC:wght@400;500;600;700&display=swap";._shell_o5x59_1{min-height:100vh;background:radial-gradient(circle at top left,var(--accent-soft) 0%,transparent 26%),radial-gradient(circle at top right,var(--brand-soft) 0%,transparent 24%),var(--bg-base);color:var(--text-primary)}._header_o5x59_10{position:sticky;top:0;z-index:30;display:grid;grid-template-columns:260px 1fr auto;align-items:center;gap:20px;padding:18px 28px;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);background:color-mix(in srgb,var(--bg-elevated) 82%,transparent);border-bottom:1px solid var(--border-subtle)}._brandBlock_o5x59_24{display:flex;align-items:center;gap:14px}._brandMark_o5x59_30{width:46px;height:46px;display:flex;align-items:center;justify-content:center;border-radius:16px;font-size:20px;color:var(--brand-strong);background:linear-gradient(145deg,var(--brand-soft),transparent);border:1px solid var(--border-default);box-shadow:var(--shadow-md)}._brandTitle_o5x59_44{font-family:var(--font-heading);font-size:18px;font-weight:700;letter-spacing:-.03em}._brandMeta_o5x59_51{color:var(--text-tertiary);font-size:12px;letter-spacing:.18em;text-transform:uppercase}._topNav_o5x59_58{display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap}._topNavItem_o5x59_66{min-height:44px;padding:10px 14px;display:inline-flex;align-items:center;gap:8px;border:1px solid transparent;border-radius:14px;background:transparent;color:var(--text-secondary);font:inherit;cursor:pointer;transition:all .2s ease}._topNavItem_o5x59_66:hover{color:var(--text-primary);background:var(--bg-surface-hover);border-color:var(--border-subtle)}._topNavItemActive_o5x59_87{color:var(--brand-strong);background:linear-gradient(135deg,var(--brand-soft),transparent);border-color:color-mix(in srgb,var(--brand-strong) 25%,transparent);box-shadow:inset 0 1px #ffffff0d}._headerActions_o5x59_94{display:flex;align-items:center;gap:12px}._headerButton_o5x59_100{color:var(--text-secondary)!important;border-radius:12px!important}._userButton_o5x59_105{display:flex;align-items:center;gap:12px;padding:6px 8px;border:1px solid var(--border-subtle);border-radius:16px;background:var(--bg-surface);cursor:pointer}._userAvatar_o5x59_116{background:linear-gradient(135deg,var(--brand-strong),var(--accent-strong))!important}._userMeta_o5x59_120{display:flex;flex-direction:column;align-items:flex-start;min-width:0}._userName_o5x59_127{color:var(--text-primary)!important;font-weight:600}._userRole_o5x59_132{color:var(--text-tertiary)!important;font-size:12px}._body_o5x59_137{display:grid;grid-template-columns:312px minmax(0,1fr);gap:24px;padding:24px 28px 32px}._bodyEditor_o5x59_144{grid-template-columns:var(--editor-outline-width, 460px) 12px minmax(0,1fr);gap:18px}._outlinePanel_o5x59_149{position:sticky;top:98px;align-self:start;max-height:calc(100vh - 122px);padding:20px;overflow:auto;border:1px solid var(--border-subtle);border-radius:24px;background:color-mix(in srgb,var(--bg-surface) 92%,transparent);box-shadow:var(--shadow-lg);scrollbar-width:none;-ms-overflow-style:none;-webkit-mask-image:linear-gradient(to bottom,transparent 0,black 18px,black calc(100% - 18px),transparent 100%);mask-image:linear-gradient(to bottom,transparent 0,black 18px,black calc(100% - 18px),transparent 100%)}._outlinePanelEditor_o5x59_166{max-height:calc(100vh - 114px);padding:22px 22px 18px}._outlinePanel_o5x59_149::-webkit-scrollbar{width:0;height:0}._outlineHeader_o5x59_176{display:flex;flex-direction:column;gap:12px;margin-bottom:16px}._outlineImport_o5x59_183{margin-bottom:16px;padding:2px 0 4px}._outlineImportActions_o5x59_188{display:flex;gap:8px;flex-wrap:wrap;align-items:center}._outlineImportActions_o5x59_188 .ant-btn{min-width:0;height:34px;padding-inline:12px;border-radius:11px!important;font-size:12px;line-height:32px;box-shadow:none!important}._outlineImportActions_o5x59_188 .ant-upload{display:inline-flex}._outlineImportText_o5x59_209{color:var(--text-tertiary);font-size:12px;line-height:1.5}._outlineActionBottom_o5x59_215{width:100%;margin-top:16px;border-radius:14px!important}._outlineEyebrow_o5x59_221{color:var(--text-tertiary)!important;font-size:12px;letter-spacing:.14em;text-transform:uppercase}._courseSelect_o5x59_228 .ant-select-selector{min-height:48px!important;border-radius:14px!important}._chapterList_o5x59_233{display:flex;flex-direction:column;gap:12px;min-height:0}._chapterCard_o5x59_240{padding:8px 2px 10px;border-radius:18px;background:linear-gradient(180deg,color-mix(in srgb,var(--bg-elevated) 38%,transparent),transparent)}._chapterRow_o5x59_246{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;align-items:center}._outlineTools_o5x59_253{display:flex;align-items:center;gap:2px}._chapterButton_o5x59_259,._lessonButton_o5x59_260{width:100%;display:flex;align-items:center;gap:10px;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;font:inherit;text-align:left;transition:all .2s ease}._chapterButton_o5x59_259{padding:10px 12px;border-radius:14px;font-weight:600;background:linear-gradient(135deg,color-mix(in srgb,var(--brand-soft) 18%,transparent),transparent)}._chapterButton_o5x59_259:hover,._lessonButton_o5x59_260:hover{background:var(--bg-surface-hover);color:var(--text-primary)}._chapterButtonActive_o5x59_287{background:linear-gradient(135deg,color-mix(in srgb,var(--brand-soft) 58%,transparent),transparent);color:var(--brand-strong)}._chapterIndex_o5x59_292,._lessonIndex_o5x59_293{width:28px;height:28px;flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;background:color-mix(in srgb,var(--bg-surface-hover) 90%,transparent);font-size:12px}._chapterIndex_o5x59_292{width:32px;height:32px;border-radius:12px;background:linear-gradient(180deg,color-mix(in srgb,var(--brand-strong) 26%,transparent),color-mix(in srgb,var(--brand-soft) 62%,transparent));color:color-mix(in srgb,var(--brand-strong) 92%,white 12%);font-weight:700;box-shadow:inset 0 1px #ffffff14}._lessonIndex_o5x59_293{background:color-mix(in srgb,var(--bg-surface-hover) 90%,transparent);color:var(--text-tertiary)}._lessonRow_o5x59_320{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px;align-items:center}._lessonTools_o5x59_327{display:flex;gap:2px}._lessonAdd_o5x59_332{margin-top:8px;border-radius:12px!important;color:color-mix(in srgb,var(--text-secondary) 78%,transparent)!important;border-color:color-mix(in srgb,var(--border-default) 82%,white 10%)!important;background:color-mix(in srgb,var(--bg-surface) 76%,transparent)!important}._lessonAdd_o5x59_332:hover{color:var(--text-secondary)!important;border-color:color-mix(in srgb,var(--brand-strong) 35%,white 8%)!important}._outlineActionBottom_o5x59_215{color:color-mix(in srgb,var(--text-secondary) 82%,transparent)!important;border-color:color-mix(in srgb,var(--accent-strong) 42%,white 8%)!important;background:color-mix(in srgb,var(--bg-surface) 72%,transparent)!important}._outlineActionBottom_o5x59_215:hover{color:var(--text-primary)!important;border-color:color-mix(in srgb,var(--accent-strong) 65%,white 8%)!important}._chapterTitle_o5x59_356{flex:1 1 auto;min-width:0;line-height:1.45;white-space:normal}._lessonList_o5x59_363{display:flex;flex-direction:column;gap:6px;padding:8px 0 0 6px}._lessonButton_o5x59_260{align-items:flex-start;padding:9px 12px;border-radius:12px;font-size:13px}._lessonButton_o5x59_260 span:last-child{min-width:0;line-height:1.45;white-space:normal}._lessonButtonActive_o5x59_383{color:var(--text-primary);background:color-mix(in srgb,var(--accent-soft) 90%,transparent)}._main_o5x59_388{min-width:0}._resizeHandle_o5x59_392{position:sticky;top:120px;align-self:start;width:12px;height:calc(100vh - 160px);border:none;border-radius:999px;background:transparent;cursor:col-resize}._resizeHandle_o5x59_392:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;margin:auto;width:4px;height:100%;border-radius:999px;background:linear-gradient(180deg,transparent,color-mix(in srgb,var(--border-default) 62%,transparent),transparent);transition:background .2s ease,transform .2s ease}._resizeHandle_o5x59_392:hover:before{background:linear-gradient(180deg,transparent,color-mix(in srgb,var(--brand-strong) 55%,transparent),transparent);transform:scaleX(1.15)}._content_o5x59_421{min-height:calc(100vh - 140px)}@media(max-width:1280px){._header_o5x59_10{grid-template-columns:1fr;justify-items:start}._topNav_o5x59_58{justify-content:flex-start}._body_o5x59_137,._bodyEditor_o5x59_144{grid-template-columns:1fr}._outlinePanel_o5x59_149{position:static;max-height:none}._resizeHandle_o5x59_392{display:none}}@media(max-width:768px){._header_o5x59_10,._body_o5x59_137{padding-left:16px;padding-right:16px}._outlinePanel_o5x59_149{padding:16px}}:root{--font-heading: "Manrope", "Noto Sans SC", sans-serif;--font-body: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--brand-strong: #4f6bff;--accent-strong: #14b8a6;--brand-soft: rgba(79, 107, 255, .18);--accent-soft: rgba(20, 184, 166, .16);--bg-base: #f4f7fb;--bg-elevated: rgba(255, 255, 255, .92);--bg-surface: rgba(255, 255, 255, .86);--bg-surface-hover: rgba(232, 238, 248, .9);--bg-card: #ffffff;--text-primary: #102033;--text-secondary: rgba(16, 32, 51, .74);--text-tertiary: rgba(16, 32, 51, .48);--border-subtle: rgba(103, 120, 148, .16);--border-default: rgba(103, 120, 148, .24);--shadow-md: 0 14px 40px rgba(21, 33, 59, .08);--shadow-lg: 0 30px 80px rgba(21, 33, 59, .14)}:root[data-theme=dark],.dark-theme{--bg-base: #09111f;--bg-elevated: rgba(12, 22, 39, .9);--bg-surface: rgba(17, 29, 49, .82);--bg-surface-hover: rgba(31, 48, 76, .84);--bg-card: #101c31;--text-primary: rgba(245, 248, 255, .96);--text-secondary: rgba(218, 229, 247, .74);--text-tertiary: rgba(218, 229, 247, .48);--border-subtle: rgba(126, 154, 198, .16);--border-default: rgba(126, 154, 198, .24);--shadow-md: 0 18px 46px rgba(0, 0, 0, .28);--shadow-lg: 0 32px 90px rgba(0, 0, 0, .36)}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100%}html{color-scheme:light}html[data-theme=dark]{color-scheme:dark}body{font-family:var(--font-body);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:var(--bg-base);color:var(--text-primary)}button,input,select,textarea{font:inherit}a{color:var(--brand-strong);text-decoration:none}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:color-mix(in srgb,var(--text-tertiary) 50%,transparent);border-radius:999px}.glass-card{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:24px;box-shadow:var(--shadow-md);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.gradient-text{background:linear-gradient(135deg,var(--brand-strong),var(--accent-strong));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}