:root{--bg:#f3f7f5;--bg-strong:#e5f0eb;--surface:rgba(255,255,255,0.94);--surface-strong:#ffffff;--text:#18261f;--muted:#63746b;--line:rgba(24,38,31,0.1);--accent:#19c37d;--accent-dark:#108456;--accent-soft:rgba(25,195,125,0.12);--success:#2d8a63;--warning:#c2882f;--danger:#bc5642;--shadow:0 24px 70px rgba(16,42,31,0.08);--admin-rail-collapsed-width:88px;--admin-rail-expanded-width:280px;--admin-rail-gap:24px;--builder-safe-left:calc(var(--admin-rail-collapsed-width) + var(--admin-rail-gap));--builder-overlay-top:156px;--page-gutter:24px;--stage-width:1360px}.builder-loading{display:grid;place-items:center;min-height:100vh;padding:40px;color:var(--muted)}.builder-loading--error{color:var(--danger)}.builder-workspace{min-height:100vh;padding-left:var(--builder-safe-left);background:radial-gradient(circle at top left,rgba(25,195,125,.1),transparent 28%),linear-gradient(180deg,#fbfdfc,#eef5f2)}.builder-workspace__topbar{position:-webkit-sticky;position:sticky;top:0;z-index:20;padding:16px 0;border-bottom:1px solid rgba(24,38,31,.08);background:rgba(250,253,251,.88);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.builder-inspector__stats,.builder-topbar__actions,.builder-topbar__inner,.builder-topbar__left,.outline-module__actions,.sheet-toggle-grid{display:flex;flex-wrap:wrap;gap:12px}.builder-topbar__inner{align-items:center;justify-content:space-between;width:min(var(--stage-width),calc(100vw - var(--builder-safe-left) - 24px));margin:0 auto 0 0;padding:0 var(--page-gutter)}.builder-topbar__left{flex:1 1 420px;align-items:center;min-width:0}.builder-topbar__actions{flex:0 0 auto;align-items:center;justify-content:flex-end}.builder-topbar__actions .button,.builder-topbar__actions .button--ghost{white-space:nowrap}.builder-topbar__title{display:grid;flex:1 1 auto;grid-gap:4px;gap:4px;min-width:0}.builder-topbar__meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;min-width:0}.builder-topbar__title input,.sheet-card__title{border:none;background:transparent;color:var(--text);font-family:var(--font-display),sans-serif;font-size:clamp(1.5rem,3vw,2.35rem);font-weight:700;letter-spacing:-.04em;outline:none}.builder-topbar__title input{width:min(100%,760px)}.builder-topbar__title input,.builder-topbar__title small{display:block;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.builder-topbar__title small{color:var(--muted)}.builder-workspace__body{display:grid;grid-template-columns:320px minmax(0,1fr) 340px;min-height:calc(100vh - 88px)}.builder-inspector,.builder-sidebar{padding:24px;border-right:1px solid rgba(24,38,31,.08);background:rgba(255,255,255,.64)}.builder-inspector{border-left:1px solid rgba(24,38,31,.08);border-right:none}.builder-inspector__header,.builder-sidebar__header,.sheet-card__header,.test-question-card__header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.sheet-card__header{flex-wrap:wrap}.builder-inspector,.builder-outline,.content-sheet,.test-sheet{display:grid;grid-gap:16px;gap:16px}.outline-module{display:grid;grid-gap:14px;gap:14px;padding:16px;border:1px solid rgba(24,38,31,.08);border-radius:24px;background:rgba(255,255,255,.82);transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease,opacity .18s ease}.outline-module--active{border-color:rgba(25,195,125,.3);box-shadow:0 16px 40px rgba(17,65,47,.08)}.outline-module--dragging{opacity:.68}.outline-module__header{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;grid-gap:10px;gap:10px}.outline-module__title{width:100%;border:none;background:transparent;color:var(--text);font-weight:700;outline:none}.outline-module__items{display:grid;grid-gap:0;gap:0;padding:6px;border-radius:18px;transition:background .18s ease,padding .18s ease}.outline-module__items--over{background:rgba(25,195,125,.08)}.outline-drop-slot{overflow:hidden;max-height:10px;padding:0 2px;transition:max-height .24s cubic-bezier(.22,1,.36,1),padding .24s cubic-bezier(.22,1,.36,1),opacity .18s ease}.outline-drop-slot__line{display:block;height:6px;border:1px dashed transparent;border-radius:14px;background:transparent;opacity:0;transform:scaleY(.68);transition:opacity .22s ease,transform .24s cubic-bezier(.22,1,.36,1),height .24s cubic-bezier(.22,1,.36,1),border-color .22s ease,background .22s ease,box-shadow .22s ease}.outline-drop-slot--active{max-height:40px;padding:6px 2px}.outline-drop-slot--active .outline-drop-slot__line{height:26px;border-color:rgba(25,195,125,.42);background:linear-gradient(90deg,rgba(25,195,125,.12),rgba(25,195,125,.24));box-shadow:inset 0 0 0 1px rgba(255,255,255,.56);opacity:1;transform:scaleY(1)}.outline-item{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;grid-gap:10px;gap:10px;width:100%;padding:10px 12px;border:1px solid transparent;border-radius:18px;background:rgba(244,248,246,.92);color:var(--text);text-align:left;transition:transform .18s ease,background .18s ease,border-color .18s ease,box-shadow .18s ease,opacity .18s ease}.outline-item--active{border-color:rgba(25,195,125,.28);background:rgba(25,195,125,.08)}.outline-item--dragging{opacity:.5;box-shadow:0 14px 34px rgba(18,59,42,.12)}.outline-item__content{display:grid;grid-gap:4px;gap:4px;min-width:0}.outline-item__content small,.outline-item__content strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.builder-canvas{padding:28px}.sheet-card{display:grid;grid-gap:22px;gap:22px;max-width:920px;margin:0 auto;padding:28px 36px 36px;border:1px solid rgba(24,38,31,.08);border-radius:34px;background:rgba(255,255,255,.94);box-shadow:0 28px 80px rgba(12,43,32,.08)}.sheet-card--empty{place-items:center;text-align:center}.content-sheet{align-content:start}.sheet-block{display:grid;grid-template-columns:88px minmax(0,1fr);grid-gap:16px;gap:16px;padding:6px 0}.sheet-block__rail{display:grid;grid-template-columns:repeat(2,1fr);grid-auto-rows:40px;align-content:start;grid-gap:8px;gap:8px;width:88px;opacity:0;transition:opacity .14s ease}.sheet-block--active .sheet-block__rail,.sheet-block:hover .sheet-block__rail{opacity:1}.sheet-block__action{position:relative;width:40px;min-width:40px;min-height:40px;padding:0}.sheet-block__action[data-tooltip]:after{content:attr(data-tooltip);position:absolute;top:50%;left:calc(100% + 10px);transform:translateY(-50%) translateX(-4px);padding:8px 11px;border-radius:999px;background:rgba(16,42,31,.94);color:white;font-size:.78rem;font-weight:700;letter-spacing:.01em;white-space:nowrap;box-shadow:0 14px 32px rgba(9,20,16,.18);opacity:0;pointer-events:none;transition:opacity .14s ease,transform .14s ease}.sheet-block__action[data-tooltip]:focus-visible:after,.sheet-block__action[data-tooltip]:hover:after{opacity:1;transform:translateY(-50%) translateX(0)}.sheet-block__body{min-width:0}.sheet-heading-input,.sheet-inline-input,.sheet-textarea{width:100%;border:1px solid transparent;border-radius:18px;background:transparent;color:var(--text);outline:none;transition:border-color .14s ease,background .14s ease}.sheet-heading-input{padding:6px 4px;font-family:var(--font-display),sans-serif;font-size:clamp(1.6rem,3vw,2.3rem);font-weight:700;letter-spacing:-.04em}.sheet-inline-input,.sheet-textarea{padding:14px 16px;background:rgba(246,249,247,.8)}.sheet-textarea{min-height:120px;resize:vertical;line-height:1.7}.sheet-textarea--callout{background:rgba(25,195,125,.08)}.sheet-heading-input:focus,.sheet-inline-input:focus,.sheet-textarea:focus{border-color:rgba(25,195,125,.24);background:rgba(255,255,255,.96)}.lesson-block--divider,.sheet-divider{border:none;border-top:1px solid rgba(24,38,31,.12);margin:4px 0}.insertion-line{display:grid;grid-gap:10px;gap:10px;min-height:12px;padding:0}.builder-icon-button,.insertion-line__trigger{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border:1px solid rgba(24,38,31,.1);border-radius:999px;background:rgba(255,255,255,.92);color:var(--muted)}.builder-icon-button:disabled{opacity:.4;cursor:not-allowed}.block-menu{display:flex;flex-wrap:wrap;gap:8px}.block-menu__button{min-height:36px;padding:8px 12px;border:1px solid rgba(24,38,31,.1);border-radius:999px;background:rgba(248,251,249,.96);color:var(--text)}.block-menu__button--accent{background:rgba(25,195,125,.1);color:var(--accent-dark)}.sheet-inline-settings{display:grid;grid-gap:18px;gap:18px;padding-top:16px;border-top:1px solid rgba(24,38,31,.08)}.sheet-inline-settings__header,.sheet-setting-chip{display:grid;grid-gap:4px;gap:4px}.sheet-setting-chip{min-width:120px;padding:16px;border:1px solid rgba(24,38,31,.08);border-radius:20px;background:rgba(248,251,249,.92)}.sheet-setting-chip strong{color:var(--text);font-size:1.15rem}.builder-field{display:grid;grid-gap:8px;gap:8px}.builder-field span{color:var(--muted);font-size:.92rem}.builder-field input,.builder-field select,.builder-field textarea{width:100%;padding:13px 16px;border:1px solid rgba(24,38,31,.1);border-radius:18px;background:rgba(255,255,255,.94);color:var(--text)}.builder-toggle{gap:10px;min-height:48px;padding:12px 14px;border:1px solid rgba(24,38,31,.08);background:rgba(248,251,249,.92)}.lesson-block--media,.lesson-block--video,.sheet-media-preview{display:grid;grid-gap:10px;gap:10px}.lesson-block--media img,.sheet-media-preview img{width:100%;border-radius:24px}.video-player-shell{overflow:hidden;border-radius:24px;background:#081610}.video-player-shell--embed{position:relative;aspect-ratio:16/9;background:#081610}.video-player-shell video{display:block;width:100%;height:auto}.video-player-shell iframe{display:block;width:100%;height:100%;border:none}.sheet-preview-block,.test-question-card{display:grid;grid-gap:16px;gap:16px;padding:20px;border:1px solid rgba(24,38,31,.08);border-radius:24px;background:rgba(248,251,249,.9)}.lesson-sheet{width:min(1040px,100%);max-width:100%;margin:0 auto;padding:30px;border:1px solid rgba(24,38,31,.08);border-radius:32px;background:rgba(255,255,255,.96);box-shadow:0 24px 72px rgba(16,42,31,.08)}.lesson-sheet__body{display:grid;grid-gap:20px;gap:20px}.student-learning{display:grid;grid-template-columns:minmax(260px,300px) minmax(0,1fr);grid-gap:24px;gap:24px;align-items:start;transition:grid-template-columns .22s ease,gap .22s ease}.student-learning--route-hidden{grid-template-columns:0 minmax(0,1fr);gap:0}.student-learning__hero,.student-learning__pager,.student-learning__sidebar{border:1px solid var(--line);border-radius:28px;background:rgba(255,255,255,.94);box-shadow:var(--shadow)}.student-learning__sidebar{position:-webkit-sticky;position:sticky;top:24px;display:grid;grid-gap:18px;gap:18px;min-width:0;padding:22px;overflow:hidden;transition:opacity .18s ease,transform .18s ease,padding .18s ease,border-color .18s ease,box-shadow .18s ease}.student-learning--route-hidden .student-learning__sidebar{opacity:0;transform:translateX(-18px);padding:0;border-color:transparent;box-shadow:none;pointer-events:none}.student-learning__content,.student-learning__item-list,.student-learning__main,.student-learning__module,.student-learning__sidebar-head{display:grid;grid-gap:14px;gap:14px}.student-learning__outline{display:grid;grid-gap:16px;gap:16px}.student-learning__module-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.student-learning__module-head span{color:var(--muted);font-size:.9rem;font-weight:700}.student-learning__item-link{display:grid;grid-template-columns:36px minmax(0,1fr);grid-gap:12px;gap:12px;align-items:start;padding:12px 14px;border:1px solid rgba(24,38,31,.08);border-radius:20px;background:rgba(247,250,248,.9);transition:border-color .16s ease,background .16s ease,transform .16s ease}.student-learning__item-link:hover{transform:translateY(-1px);border-color:rgba(25,195,125,.26)}.student-learning__item-link--active{border-color:rgba(25,195,125,.26);background:linear-gradient(180deg,rgba(25,195,125,.12),rgba(255,255,255,.98))}.student-learning__item-index{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:999px;background:rgba(24,38,31,.06);color:var(--text);font-weight:800}.student-learning__item-copy{display:grid;grid-gap:4px;gap:4px}.student-learning__item-copy small{color:var(--muted)}.student-learning__main{min-width:0}.student-learning__hero{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:24px 26px}.student-learning__hero-actions{justify-content:flex-end}.student-learning__hero-meta,.student-learning__pager-copy{display:flex;flex-wrap:wrap;gap:10px}.student-learning__pager-copy{align-items:center;justify-content:center}.student-learning__content>.lesson-sheet,.student-learning__content>.sheet-card{margin:0}.student-learning__pager{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;grid-gap:16px;gap:16px;padding:18px 22px}.student-learning__pager .button:last-child{justify-self:end}.lesson-block{color:var(--text)}.lesson-block--heading{font-family:var(--font-display),sans-serif;font-size:clamp(1.7rem,3vw,2.4rem);letter-spacing:-.04em}.lesson-block--callout,.lesson-block--list li,.lesson-block--quote cite,.lesson-block--quote p,.lesson-block--text,.lesson-sheet figcaption{color:var(--text)}.lesson-block--text{line-height:1.8;white-space:pre-wrap}.lesson-block--callout{padding:18px 20px;border-radius:24px;background:rgba(25,195,125,.08)}.lesson-block--quote{display:grid;grid-gap:10px;gap:10px;padding-left:20px;border-left:3px solid rgba(25,195,125,.24)}.lesson-block--list{display:grid;grid-gap:8px;gap:8px;padding-left:20px}.lesson-block--file a{width:-moz-fit-content;width:fit-content}.builder-modal__backdrop{background:rgba(9,20,16,.42)}.builder-modal__panel{width:min(860px,calc(100vw - 32px));max-height:calc(100vh - 40px);padding:24px;border-radius:30px;background:rgba(255,255,255,.98);box-shadow:0 32px 90px rgba(9,20,16,.18)}.builder-modal__meta,.builder-warning-list{display:flex;flex-wrap:wrap;gap:12px}.builder-warning-list p{color:var(--warning)}.builder-launch{min-height:100vh;display:grid;place-items:center;padding:28px}.builder-launch__panel{width:min(760px,100%);padding:30px;border:1px solid rgba(24,38,31,.08);border-radius:32px;background:rgba(255,255,255,.96);box-shadow:0 26px 80px rgba(16,42,31,.08)}@media (max-width:860px){.lesson-sheet,.sheet-card{padding:22px;border-radius:28px}.sheet-block{grid-template-columns:1fr}.sheet-block__rail{grid-auto-flow:column;justify-content:start;opacity:1}}*{box-sizing:border-box}body,html{min-height:100%;overflow-x:hidden;scroll-padding-top:120px}body{margin:0;color:var(--text);font-family:var(--font-body),sans-serif;background:radial-gradient(circle at top left,rgba(25,195,125,.14),transparent 28%),radial-gradient(circle at top right,rgba(4,30,22,.08),transparent 24%),linear-gradient(180deg,#fafdfb 0,var(--bg) 100%);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}a{color:inherit;text-decoration:none}img{max-width:100%}h1,h2,h3,h4{text-wrap:balance}a,button,input,select,textarea{touch-action:manipulation}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(25,195,125,.26);outline-offset:3px}.skip-link{position:fixed;top:14px;left:14px;z-index:120;padding:10px 14px;border-radius:16px;background:#18261f;color:white;transform:translateY(-120%);transition:transform .16s ease}.skip-link:focus-visible{transform:translateY(0)}.builder-workspace__tabs{padding:18px 0 0}.builder-upload-progress{padding:14px 0 0}.builder-upload-progress__panel{display:grid;grid-gap:10px;gap:10px;padding:16px 18px;border:1px solid rgba(25,195,125,.18);border-radius:22px;background:linear-gradient(180deg,rgba(25,195,125,.12),rgba(255,255,255,.96));box-shadow:0 16px 38px rgba(18,76,54,.08)}.builder-upload-progress__meta{display:flex;align-items:center;justify-content:space-between;gap:12px}.builder-upload-progress__meta span,.builder-upload-progress__panel small{color:var(--muted)}.builder-upload-progress__bar{overflow:hidden;height:10px;border-radius:999px;background:rgba(24,38,31,.08)}.builder-upload-progress__bar span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#19c37d,#51dca0);transition:width .14s ease}.builder-stage{width:min(var(--stage-width),calc(100vw - var(--builder-safe-left) - 24px));margin:0 auto 0 0;padding:0 var(--page-gutter)}.builder-workspace__body{display:block;min-height:calc(100vh - 156px);padding:22px 0 34px}.builder-panel{display:grid;grid-gap:22px;gap:22px;padding:28px 30px;border:1px solid rgba(24,38,31,.08);border-radius:32px;background:rgba(255,255,255,.94);box-shadow:0 28px 80px rgba(12,43,32,.08)}.builder-panel--drawer{height:100%;overflow:auto;overscroll-behavior:contain}.builder-contextbar,.builder-mode-switch,.builder-panel__header,.builder-preview-shell__header,.builder-quickbar__actions,.builder-tabbar,.sheet-tabs{display:flex;flex-wrap:wrap;gap:12px}.builder-panel__header{align-items:center;justify-content:space-between}.builder-tabbar{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}.course-workspace-shell__header{align-items:start}.course-workspace-shell__tabs{display:flex;flex-wrap:wrap;gap:10px}.course-workspace-shell__tabs--builder{margin-bottom:0}.builder-contextbar{align-items:center;justify-content:space-between;margin-bottom:20px;padding:16px 18px;border:1px solid rgba(24,38,31,.08);border-radius:24px;background:rgba(255,255,255,.9);box-shadow:0 18px 48px rgba(12,43,32,.06)}.builder-contextbar__copy{display:grid;grid-gap:4px;gap:4px;min-width:0}.builder-contextbar__copy small{color:var(--muted)}.course-workspace-tab{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:10px 16px;border:1px solid rgba(24,38,31,.08);border-radius:999px;background:rgba(255,255,255,.82);color:var(--muted);font-weight:700;transition:background .16s ease,border-color .16s ease,color .16s ease,transform .16s ease}.course-workspace-tab:hover{transform:translateY(-1px);border-color:rgba(25,195,125,.22)}.course-workspace-tab--active{border-color:rgba(25,195,125,.28);background:rgba(25,195,125,.12);color:var(--accent-dark)}.builder-tab{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:58px;padding:12px 16px;border:1px solid rgba(24,38,31,.08);border-radius:24px;background:rgba(255,255,255,.76);color:var(--muted);text-align:left}.builder-tab strong{color:var(--text);font-size:1rem}.builder-tab__meta{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:30px;padding:0 10px;border-radius:999px;background:rgba(24,38,31,.06);color:inherit;font-size:.82rem;font-weight:700}.builder-tab--active{border-color:rgba(25,195,125,.26);background:linear-gradient(180deg,rgba(25,195,125,.12),rgba(255,255,255,.98));color:var(--accent-dark);box-shadow:0 14px 36px rgba(18,76,54,.08)}.builder-canvas{display:grid;grid-gap:20px;gap:20px;padding:0}.builder-mode-switch{padding:6px;border:1px solid rgba(24,38,31,.08);border-radius:999px;background:rgba(244,248,246,.92)}.builder-mode-switch__button{min-height:40px;padding:0 16px;border:0;border-radius:999px;background:transparent;color:var(--muted);font:inherit;font-weight:700}.builder-mode-switch__button--active{background:linear-gradient(180deg,rgba(25,195,125,.12),rgba(255,255,255,.98));color:var(--accent-dark);box-shadow:0 12px 28px rgba(18,76,54,.08)}.builder-preview-shell{display:grid;grid-gap:18px;gap:18px}.builder-preview-shell__header{align-items:center;justify-content:space-between;padding:20px 22px;border:1px solid rgba(24,38,31,.08);border-radius:28px;background:rgba(255,255,255,.94);box-shadow:0 18px 44px rgba(12,43,32,.06)}.sheet-card{max-width:1180px}.sheet-tabs{padding-bottom:8px;border-bottom:1px solid rgba(24,38,31,.08)}.sheet-tab{min-height:40px;padding:10px 16px;border:1px solid rgba(24,38,31,.08);border-radius:999px;background:rgba(244,248,246,.88);color:var(--muted)}.sheet-tab--active{border-color:rgba(25,195,125,.28);background:rgba(25,195,125,.1);color:var(--accent-dark)}.builder-quickbar{padding:12px 14px;border:1px solid rgba(24,38,31,.08);border-radius:20px;background:linear-gradient(180deg,rgba(25,195,125,.08),rgba(255,255,255,.96))}.builder-quickbar,.builder-quickbar__header{display:flex;flex-wrap:wrap;align-items:center;gap:12px}.builder-quickbar__header{justify-content:space-between;flex:0 0 auto}.builder-quickbar__button{min-height:36px;padding:8px 14px;border:1px solid rgba(24,38,31,.08);border-radius:999px;background:rgba(255,255,255,.94);color:var(--text)}.builder-quickbar__button--accent{background:rgba(25,195,125,.16);color:var(--accent-dark)}.builder-mini-tabs{display:flex;flex-wrap:wrap;gap:8px}.builder-mini-tab{min-height:30px;padding:5px 10px;border:1px solid rgba(24,38,31,.08);border-radius:999px;background:rgba(255,255,255,.88);color:var(--muted)}.builder-mini-tab--active{border-color:rgba(25,195,125,.28);background:rgba(25,195,125,.12);color:var(--accent-dark)}.sheet-inline-settings--tabbed{padding-top:0;border-top:none}.course-settings-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:18px;gap:18px}.course-settings-grid__wide{grid-column:1/-1}.course-settings-tabbar{grid-template-columns:repeat(4,minmax(0,1fr))}.settings-mode-switch{width:-moz-fit-content;width:fit-content}.api-window,.landing-section-card,.settings-card{padding:20px 22px;border:1px solid rgba(24,38,31,.08);border-radius:24px;background:rgba(255,255,255,.94)}.api-window-grid,.docs-grid,.landing-section-grid{display:grid;grid-gap:18px;gap:18px}.docs-grid,.landing-section-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.api-window-grid{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}.api-window__header,.settings-inline-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px}.settings-inline-row input{flex:1 1 280px}.api-window__header{justify-content:space-between}.api-window pre{margin:0;padding:18px;overflow-x:auto;border-radius:20px;background:#142019;color:#ecfff7;font-size:.92rem;line-height:1.6;white-space:pre-wrap}.builder-field--hint{align-content:stretch}.builder-note{display:grid;grid-gap:0;gap:0;min-height:100%;padding:14px 16px;border:1px solid rgba(24,38,31,.08);border-radius:18px;background:rgba(248,251,249,.92)}.sheet-textarea{overflow:hidden}.sheet-upload-placeholder{display:grid;place-items:center;min-height:148px;padding:22px;border:1px dashed rgba(24,38,31,.16);border-radius:24px;background:linear-gradient(180deg,rgba(25,195,125,.07),rgba(255,255,255,.96)),rgba(248,251,249,.94);color:var(--accent-dark);font-weight:600}.sheet-upload-placeholder--compact{min-height:88px}.sheet-upload-placeholder--video{min-height:176px}.sheet-media-meta{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;border:1px solid rgba(24,38,31,.08);border-radius:18px;background:rgba(248,251,249,.92)}.sheet-media-meta span{color:var(--text);font-size:.92rem}.sheet-media-empty{display:grid;grid-gap:10px;gap:10px}.sheet-media-actions{display:flex;flex-wrap:wrap;gap:10px}.builder-canvas .sheet-card{width:min(100%,1240px);max-width:1240px;min-height:0;gap:18px;padding:28px 34px 32px}.builder-canvas .sheet-card__title{flex:1 1 560px;min-width:0}.builder-canvas .sheet-card__header .button-row{flex:0 0 auto;justify-content:flex-end}.builder-canvas .sheet-tabs{width:100%}.builder-quickbar__actions{flex:1 1 480px;align-items:center}.insertion-line__trigger{opacity:0;pointer-events:none;transform:translateY(-2px);transition:opacity .14s ease,transform .14s ease}.insertion-line--active .insertion-line__trigger,.insertion-line:hover .insertion-line__trigger{opacity:1;pointer-events:auto;transform:translateY(0)}.insertion-line--active{padding:8px 0}.block-menu{margin-left:2px}@media (max-width:980px){.builder-stage{width:min(var(--stage-width),calc(100vw - 36px));padding:0 18px}.builder-upload-progress,.builder-workspace__tabs{padding-top:18px}.builder-workspace__body{padding:18px 0 28px}.builder-tabbar,.course-settings-grid,.course-settings-tabbar{grid-template-columns:1fr}.settings-inline-row{align-items:stretch}.builder-panel,.sheet-card{padding:22px;border-radius:28px}.builder-topbar__inner{padding:0 18px;width:min(var(--stage-width),calc(100vw - 36px))}}button,input,select,textarea{font:inherit}button{cursor:pointer}h1,h2,h3,h4{margin:0;font-family:var(--font-display),sans-serif;letter-spacing:-.04em}p{margin:0;color:var(--muted);line-height:1.6}.container{width:min(1180px,calc(100vw - 32px));margin:0 auto}.container--wide{width:min(1480px,calc(100vw - 32px))}.stack{display:grid;grid-gap:20px;gap:20px}.site-shell{padding-bottom:40px}.learning-shell{min-height:100vh;padding-bottom:32px}.site-header{padding:18px 0 0}.learning-shell__header{position:-webkit-sticky;position:sticky;top:0;z-index:20;padding:18px 0 0}.learning-shell__header,.site-header__inner{-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.site-header__inner{display:flex;justify-content:space-between;gap:20px;background:rgba(255,252,247,.78)}.learning-shell__header-inner,.site-header__inner{align-items:center;padding:16px 18px;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow)}.learning-shell__header-inner{display:grid;grid-template-columns:auto minmax(0,1fr) auto;grid-gap:18px;gap:18px;background:rgba(255,252,247,.86)}.learning-shell__header-copy{display:grid;grid-gap:2px;gap:2px;min-width:0}.learning-shell__header-copy strong{display:block;overflow:hidden;font-size:1rem;text-overflow:ellipsis;white-space:nowrap}.learning-shell__main{padding:22px 0 0}.brand,.dashboard-logo{gap:12px}.brand,.brand-mark,.dashboard-logo{display:inline-flex;align-items:center}.brand-mark{justify-content:center;width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--accent),#51dca0);color:white;font-size:.95rem;font-weight:800;letter-spacing:.08em}.brand-copy{display:grid;grid-gap:2px;gap:2px}.brand-copy strong{font-size:.98rem}.brand-copy span{color:var(--muted);font-size:.88rem}.button-row,.footer-links,.pill-stack,.top-nav{display:flex;flex-wrap:wrap;gap:12px}.dashboard-nav a,.top-nav a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 16px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.84);transition:transform .16s ease,background .16s ease,border-color .16s ease}.dashboard-nav a:hover,.top-nav a:hover{transform:translateY(-1px);background:var(--accent-soft);border-color:rgba(25,195,125,.26)}.main-content{display:grid;grid-gap:24px;gap:24px;padding:24px 0 0}.action-card,.auth-card,.card,.content-block,.empty-state,.hero-panel,.inline-card,.metric-card,.overview-card,.page-intro__body,.section,.table-card{border:1px solid var(--line);border-radius:28px;background:var(--surface);box-shadow:var(--shadow)}.hero-panel,.page-intro__body,.section{padding:28px}.page-intro{display:grid;grid-gap:12px;gap:12px}.page-intro h1{font-size:clamp(2.7rem,7vw,4.8rem)}.hero-panel{display:grid;grid-gap:24px;gap:24px;grid-template-columns:minmax(0,1.2fr) minmax(280px,.8fr);background:radial-gradient(circle at top right,rgba(25,195,125,.16),transparent 35%),linear-gradient(180deg,rgba(255,255,255,.7),rgba(239,248,244,.9))}.hero-panel h2{font-size:clamp(2rem,4vw,3.2rem)}.eyebrow{color:var(--accent);font-size:.78rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase}.section-heading{display:grid;grid-gap:8px;gap:8px}.action-grid,.card-grid,.course-overview-grid,.metric-grid,.mini-stat-grid,.two-col{display:grid;grid-gap:18px;gap:18px}.action-grid,.card-grid,.course-overview-grid,.metric-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.mini-stat-grid,.two-col{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}.card-cover{aspect-ratio:16/9;border-radius:28px 28px 0 0;background-size:cover;background-position:50%}.auth-card,.card-body,.content-block,.metric-card,.overview-card{display:grid;grid-gap:16px;gap:16px;padding:22px}.card-meta{flex-wrap:wrap;gap:12px;font-size:.94rem;color:var(--muted)}.action-card,.card-meta,.empty-state,.inline-card{display:flex;align-items:center;justify-content:space-between}.action-card,.empty-state,.inline-card{gap:20px;padding:22px}.action-card h3,.card h3,.empty-state h3,.metric-card h3,.mini-stat h3,.overview-card h3{font-size:1.45rem;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.mini-stat{display:grid;grid-gap:8px;gap:8px;padding:18px;border:1px solid rgba(25,195,125,.14);border-radius:24px;background:rgba(255,255,255,.64)}.mini-stat p,.mini-stat span{font-size:.94rem}.pill,.status{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:36px;padding:8px 12px;border-radius:999px;font-size:.84rem;font-weight:800;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;background:var(--accent-soft);color:var(--accent)}.pill--muted,.pill--pending,.status--draft{background:rgba(194,136,47,.14);color:var(--warning)}.pill--accepted,.status--published{background:rgba(45,138,99,.14);color:var(--success)}.pill--rejected,.pill--rework{background:rgba(188,86,66,.12);color:var(--danger)}.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;width:-moz-fit-content;width:fit-content;padding:12px 18px;border:none;border-radius:999px;background:linear-gradient(135deg,var(--accent),var(--accent-dark));color:white;font-weight:800;transition:transform .16s ease,opacity .16s ease}.button:hover{transform:translateY(-1px)}.button:disabled{opacity:.6;cursor:default}.button--ghost{background:transparent;border:1px solid rgba(25,195,125,.24);color:var(--accent)}.price-tag{color:var(--text);font-size:1.08rem;font-weight:800}.dashboard-shell{min-height:100vh}.admin-rail-backdrop{position:fixed;inset:0;z-index:88;background:rgba(10,18,15,.26);opacity:0;pointer-events:none;transition:opacity .18s ease}.admin-rail-backdrop--visible{opacity:1;pointer-events:auto}.admin-rail{position:fixed;top:0;left:0;bottom:0;z-index:90;width:var(--admin-rail-collapsed-width);overflow:hidden;border-right:1px solid var(--line);background:rgba(255,251,247,.94);box-shadow:0 28px 80px rgba(12,43,32,.14);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);transition:width .22s ease,transform .22s ease}.admin-rail--open,.admin-rail:focus-within,.admin-rail:hover{width:var(--admin-rail-expanded-width)}.admin-rail--builder{z-index:110}.admin-rail__inner,.admin-rail__top{display:grid;grid-template-columns:minmax(0,1fr);grid-gap:22px;gap:22px;min-width:0}.admin-rail__inner{height:100%;padding:18px 14px;align-content:space-between}.admin-rail__nav,.admin-rail__top{width:100%;max-width:100%;min-width:0}.admin-rail__brand{display:grid;grid-template-columns:42px minmax(0,1fr);align-items:center;justify-content:flex-start;grid-gap:12px;gap:12px;width:100%;min-height:52px;padding:0 14px;border:none;border-radius:20px;background:transparent;text-align:left;position:relative;z-index:2;justify-self:stretch;transition:width .24s cubic-bezier(.22,1,.36,1),padding .24s cubic-bezier(.22,1,.36,1),gap .24s cubic-bezier(.22,1,.36,1),grid-template-columns .24s cubic-bezier(.22,1,.36,1),border-radius .24s cubic-bezier(.22,1,.36,1),background .16s ease}.admin-rail__nav,.dashboard-nav{display:grid;grid-template-columns:minmax(0,1fr);grid-gap:10px;gap:10px;justify-items:stretch}.admin-rail__link{position:relative;display:flex;align-items:center;justify-content:flex-start;gap:12px;width:100%;min-height:52px;padding:0 16px;border:1px solid transparent;border-radius:999px;color:var(--muted);font-weight:700;overflow:hidden;justify-self:stretch;transform-origin:left center;transition:background .14s ease,border-color .14s ease,color .14s ease,box-shadow .16s ease,transform .16s ease,width .24s cubic-bezier(.22,1,.36,1),padding .24s cubic-bezier(.22,1,.36,1),gap .24s cubic-bezier(.22,1,.36,1),border-radius .24s cubic-bezier(.22,1,.36,1)}.admin-rail__brand[data-tooltip]:after,.admin-rail__link[data-tooltip]:after{content:attr(data-tooltip);position:absolute;top:50%;left:calc(100% + 12px);z-index:2;padding:8px 10px;border-radius:12px;background:rgba(24,38,31,.94);color:white;font-size:.82rem;font-weight:700;opacity:0;pointer-events:none;transform:translateY(-50%) translateX(-6px);transition:opacity .14s ease,transform .14s ease}.admin-rail:not(:hover):not(:focus-within):not(.admin-rail--open) .admin-rail__brand[data-tooltip]:focus-visible:after,.admin-rail:not(:hover):not(:focus-within):not(.admin-rail--open) .admin-rail__brand[data-tooltip]:hover:after,.admin-rail:not(:hover):not(:focus-within):not(.admin-rail--open) .admin-rail__link[data-tooltip]:focus-visible:after,.admin-rail:not(:hover):not(:focus-within):not(.admin-rail--open) .admin-rail__link[data-tooltip]:hover:after{opacity:1;transform:translateY(-50%) translateX(0)}.admin-rail__link:before{content:"";position:absolute;left:8px;top:10px;bottom:10px;width:3px;border-radius:999px;background:transparent}.admin-rail__link-icon{display:inline-flex;flex:0 0 40px;align-items:center;justify-content:center;width:40px;height:40px;border-radius:14px;background:rgba(24,38,31,.04);transition:border-radius .22s ease,background .16s ease,color .16s ease}.admin-rail__link-icon svg{width:20px;height:20px;stroke:currentColor}.admin-rail__brand-copy,.admin-rail__footer p,.admin-rail__link-label{opacity:0;max-width:0;overflow:hidden;white-space:nowrap;pointer-events:none;transition:opacity .16s ease,max-width .18s ease,transform .18s ease}.admin-rail__link-label{transform:translateX(-6px)}.admin-rail--open .admin-rail__brand,.admin-rail:focus-within .admin-rail__brand,.admin-rail:hover .admin-rail__brand{grid-template-columns:42px minmax(0,1fr);width:100%;padding:0 14px;gap:12px;justify-content:flex-start;justify-self:stretch;border-radius:20px}.admin-rail--open .admin-rail__nav,.admin-rail--open .admin-rail__top,.admin-rail:focus-within .admin-rail__nav,.admin-rail:focus-within .admin-rail__top,.admin-rail:hover .admin-rail__nav,.admin-rail:hover .admin-rail__top{justify-items:stretch}.admin-rail__link:hover{border-color:rgba(25,195,125,.26);background:rgba(25,195,125,.1);color:var(--text)}.admin-rail__link--active,.admin-rail__link--active:hover{border-color:transparent!important;background-color:var(--accent-dark)!important;background-image:linear-gradient(135deg,var(--accent),var(--accent-dark))!important;color:white!important;box-shadow:0 16px 34px rgba(16,132,86,.22)}.admin-rail__link--active:before{background:rgba(255,255,255,.9)}.admin-rail__link--active .admin-rail__link-icon{background:rgba(255,255,255,.18);color:white}.admin-rail--open .admin-rail__brand,.admin-rail--open .admin-rail__link,.admin-rail:focus-within .admin-rail__brand,.admin-rail:focus-within .admin-rail__link,.admin-rail:hover .admin-rail__brand,.admin-rail:hover .admin-rail__link{justify-content:flex-start;justify-self:stretch}.admin-rail--open .admin-rail__link,.admin-rail:focus-within .admin-rail__link,.admin-rail:hover .admin-rail__link{width:100%;padding:0 16px;gap:12px;border-radius:999px}.admin-rail--open .admin-rail__brand-copy,.admin-rail--open .admin-rail__footer p,.admin-rail--open .admin-rail__link-label,.admin-rail:focus-within .admin-rail__brand-copy,.admin-rail:focus-within .admin-rail__footer p,.admin-rail:focus-within .admin-rail__link-label,.admin-rail:hover .admin-rail__brand-copy,.admin-rail:hover .admin-rail__footer p,.admin-rail:hover .admin-rail__link-label{opacity:1;max-width:180px;transform:translateX(0);pointer-events:auto}.admin-rail__footer,.dashboard-footer{display:grid;grid-gap:10px;gap:10px;justify-items:start;padding:0 14px}.admin-rail__footer p,.dashboard-footer p{font-size:.92rem}.admin-rail:not(:hover):not(:focus-within):not(.admin-rail--open) .admin-rail__brand{grid-template-columns:42px 0;width:52px;min-height:52px;padding:0;gap:0;justify-content:center;justify-self:center;border-radius:999px}.admin-rail:not(:hover):not(:focus-within):not(.admin-rail--open) .admin-rail__nav,.admin-rail:not(:hover):not(:focus-within):not(.admin-rail--open) .admin-rail__top{justify-items:center}.admin-rail:not(:hover):not(:focus-within):not(.admin-rail--open) .admin-rail__link{width:52px;min-height:52px;padding:0;gap:0;justify-content:center;border-radius:999px;justify-self:center}.admin-rail:not(:hover):not(:focus-within):not(.admin-rail--open) .admin-rail__brand .brand-mark{justify-self:center}.admin-rail:not(:hover):not(:focus-within):not(.admin-rail--open) .admin-rail__link:before{display:none}.admin-rail:not(:hover):not(:focus-within):not(.admin-rail--open) .admin-rail__link-icon{border-radius:999px}.dashboard-main{display:grid;align-content:start;grid-gap:22px;gap:22px;min-height:100vh;padding:24px var(--page-gutter) 24px calc(var(--admin-rail-collapsed-width) + var(--admin-rail-gap))}.dashboard-header{display:flex;justify-content:space-between;gap:18px}.dashboard-header,.dashboard-header__actions{align-items:center}.dashboard-mobile-toggle{display:none}.dashboard-content{display:grid;grid-gap:20px;gap:20px}.builder-save-state,.builder-upload-progress__meta span,.metric-card h3,.mini-stat h3,.sheet-setting-chip strong,table td,table th{font-feature-settings:"tnum";font-variant-numeric:tabular-nums}@media (prefers-reduced-motion:reduce){*,:after,:before{animation-duration:.01ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.01ms!important}}.builder-rail-launcher{display:none!important;min-width:48px}.builder-toolbar--students{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.builder-toolbar__actions-row{align-items:end}.inline-card--spread{align-items:flex-start}.learning-tracker{justify-content:space-between;gap:16px;padding:18px 22px;border:1px solid var(--line);border-radius:24px;background:rgba(255,255,255,.92);box-shadow:var(--shadow)}.learning-tracker,.learning-tracker__meta{display:flex;flex-wrap:wrap;align-items:center}.learning-tracker__meta{gap:12px}.auth-wrap{display:grid;place-items:center;padding:8px 0 24px}.auth-card{width:min(520px,100%)}.login-form{display:grid;grid-gap:18px;gap:18px}.input-grid{display:grid;grid-gap:14px;gap:14px}input,select,textarea{width:100%;padding:14px 16px;border:1px solid var(--line);border-radius:18px;background:white;color:var(--text);outline:none}input:focus,select:focus,textarea:focus{border-color:rgba(25,195,125,.36);box-shadow:0 0 0 4px rgba(25,195,125,.08)}.form-error{color:var(--danger);font-weight:700}.form-success{color:var(--success);font-weight:700}.home-page{display:grid;grid-gap:24px;gap:24px}.home-block,.home-panel,.home-program-card,.home-showcase-card,.home-step-card,.promo-ribbon{border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow)}.promo-ribbon{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;background:linear-gradient(135deg,#0c1511,#163729)}.promo-ribbon a,.promo-ribbon p{color:white}.promo-ribbon a{font-weight:800}.home-hero{display:grid;grid-gap:18px;gap:18px;grid-template-columns:minmax(0,1.2fr) minmax(300px,.8fr)}.home-hero__main{display:grid;grid-gap:20px;gap:20px;padding:32px;border-radius:32px;background:radial-gradient(circle at top right,rgba(255,255,255,.16),transparent 24%),linear-gradient(135deg,#124632,#18aa6e 58%,#23d689);color:white;box-shadow:var(--shadow)}.home-hero__main .eyebrow,.home-hero__main a.button--ghost,.home-hero__main p{color:white}.home-hero__main .eyebrow{color:rgba(255,255,255,.82)}.home-hero__main h1{max-width:11ch;font-size:clamp(3rem,7vw,5.6rem);line-height:.94}.home-hero__lead{max-width:42ch;font-size:1.02rem;color:rgba(255,255,255,.82)}.home-chip-row{display:flex;flex-wrap:wrap;gap:10px}.home-chip{display:inline-flex;align-items:center;min-height:40px;padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.16);color:white;font-weight:700}.home-hero__side,.home-panel{display:grid;grid-gap:18px;gap:18px}.home-panel{padding:24px;background:var(--surface)}.home-panel--dark{background:linear-gradient(135deg,#0f1714,#1d2c25)}.home-panel--dark .eyebrow,.home-panel--dark span{color:rgba(255,255,255,.72)}.home-panel--dark strong{color:white}.home-panel__stats{display:grid;grid-gap:16px;gap:16px;grid-template-columns:repeat(3,minmax(0,1fr))}.home-panel__stats div{display:grid;grid-gap:4px;gap:4px}.home-panel__stats strong{font-size:2rem;line-height:1}.home-checks{display:grid;grid-gap:10px;gap:10px;margin:0;padding:0;list-style:none}.home-checks li{display:flex;align-items:center;gap:10px}.home-checks li:before{content:"";width:10px;height:10px;border-radius:999px;background:var(--accent);flex:0 0 auto}.home-block{display:grid;grid-gap:18px;gap:18px;padding:28px;background:rgba(255,255,255,.82)}.home-block__heading{display:grid;grid-gap:8px;gap:8px}.home-block__heading h2{font-size:clamp(2rem,4vw,3.2rem);max-width:12ch}.home-program-grid,.home-showcase-grid,.home-step-grid{display:grid;grid-gap:18px;gap:18px}.home-showcase-grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.home-showcase-card{display:grid;align-content:space-between;grid-gap:22px;gap:22px;min-height:280px;padding:24px;background:var(--surface-strong)}.home-program-card h3,.home-showcase-card h3,.home-step-card h3{font-size:1.8rem}.home-showcase-card--green{background:linear-gradient(180deg,rgba(25,195,125,.14),rgba(255,255,255,.95))}.home-showcase-card--dark{background:linear-gradient(135deg,#13211b,#1e3329)}.home-showcase-card--dark .eyebrow,.home-showcase-card--dark h3,.home-showcase-card--dark p{color:white}.home-showcase-card--sand{background:linear-gradient(180deg,#f8f0d6,#fffefa)}.home-program-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.home-program-card{display:grid;grid-gap:14px;gap:14px;padding:22px;background:rgba(255,255,255,.92)}.home-step-grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.home-step-card{display:grid;grid-gap:24px;gap:24px;padding:24px;background:linear-gradient(180deg,rgba(255,255,255,.94),rgba(229,240,235,.9))}.table-scroll{overflow-x:auto}table{width:100%;border-collapse:collapse}td,th{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}th{color:var(--muted);font-size:.84rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em}tbody tr:last-child td{border-bottom:none}.list-clean{display:grid;grid-gap:12px;gap:12px;margin:0;padding-left:20px}.list-clean--numbered{padding-left:22px}.site-footer{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:28px 0 0}.footer-brand{font-weight:800;color:var(--text)}.stack--tight{gap:6px}.builder-block-card,.builder-course-card,.builder-modal__panel,.builder-module-card,.builder-pane,.builder-surface,.builder-topbar{border:1px solid var(--line);border-radius:28px;background:rgba(255,255,255,.92);box-shadow:var(--shadow)}.builder-course-card,.builder-modal__panel,.builder-pane,.builder-surface,.builder-topbar{padding:24px}.builder-surface--compact{gap:18px}.builder-block-card,.builder-course-card,.builder-field,.builder-modal__panel,.builder-module-card,.builder-pane,.builder-pane__header,.builder-surface,.builder-topbar,.builder-warning-list{display:grid;grid-gap:18px;gap:18px}.builder-block-card__header,.builder-course-card__head,.builder-course-card__meta,.builder-modal__meta,.builder-module-actions,.builder-module-card__header,.builder-pane__header,.builder-surface__header,.builder-topbar{display:flex;align-items:center;justify-content:space-between;gap:14px}.builder-layout{display:grid;grid-template-columns:320px minmax(0,1.35fr) 320px;grid-gap:18px;gap:18px;align-items:start}.builder-pane{min-height:72vh}.builder-pane--inspector,.builder-pane--outline{position:-webkit-sticky;position:sticky;top:24px}.builder-course-grid,.builder-grid,.builder-toolbar{display:grid;grid-gap:16px;gap:16px}.builder-grid,.builder-toolbar{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.builder-course-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.builder-block-card,.builder-course-card,.builder-module-card{align-content:start}.builder-course-card h3{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.builder-course-card p,.builder-course-card__meta span,.builder-item-row small,.builder-modal__meta span,.builder-pane__header p,.builder-warning-list p{font-size:.94rem}.builder-import-outline,.builder-import-section{display:grid;grid-gap:14px;gap:14px;padding:18px 20px;border:1px solid rgba(24,38,31,.08);border-radius:24px;background:rgba(248,251,249,.92)}.builder-import-outline__header,.builder-import-section__header{display:flex;align-items:center;justify-content:space-between;gap:12px}.builder-import-outline__header span,.builder-import-section__header span{font-size:.88rem;color:var(--muted)}.builder-import-outline__list{display:grid;grid-gap:10px;gap:10px}.builder-import-outline__item{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;grid-gap:12px;gap:12px;padding:12px 14px;border-radius:18px;background:white;border:1px solid rgba(24,38,31,.06)}.builder-import-outline__item--lesson{align-items:start}.builder-import-outline__copy{display:grid;grid-gap:4px;gap:4px;min-width:0}.builder-import-outline__item small,.builder-import-outline__item strong{min-width:0}.builder-import-outline__item strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.builder-import-outline__item small{color:var(--muted)}.builder-import-outline__badge{display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:32px;padding:0 10px;border-radius:999px;font-size:.82rem;font-weight:800;color:var(--success);background:rgba(25,195,125,.12)}.builder-module-input,.builder-section-input,.builder-title-input{padding:0;border:none;border-radius:0;background:transparent;box-shadow:none}.builder-title-input{font-size:clamp(2rem,3vw,3rem);letter-spacing:-.04em}.builder-section-input,.builder-title-input{font-family:var(--font-display),sans-serif;font-weight:700}.builder-section-input{font-size:1.7rem;letter-spacing:-.03em}.builder-module-input:focus,.builder-section-input:focus,.builder-title-input:focus{box-shadow:none}.builder-save-state{padding:10px 14px;border-radius:999px;font-size:.84rem;font-weight:800;background:rgba(24,38,31,.06);color:var(--muted)}.builder-save-state--saving{background:rgba(194,136,47,.16);color:var(--warning)}.builder-save-state--saved{background:rgba(45,138,99,.16);color:var(--success)}.builder-save-state--error{background:rgba(188,86,66,.16);color:var(--danger)}.builder-outline{display:grid;grid-gap:14px;gap:14px}.builder-module-card{gap:14px;padding:16px}.builder-module-card--active{border-color:rgba(25,195,125,.26);background:linear-gradient(180deg,rgba(25,195,125,.08),rgba(255,255,255,.94))}.builder-module-items{display:grid;grid-gap:10px;gap:10px;min-height:24px}.builder-module-items--over{padding:10px;border:1px dashed rgba(25,195,125,.34);border-radius:18px;background:rgba(25,195,125,.08)}.builder-module-actions select{min-width:0}.builder-item-row{display:flex;align-items:center;gap:12px;width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:18px;background:white;text-align:left}.builder-item-row--active{border-color:rgba(25,195,125,.28);background:rgba(25,195,125,.1)}.builder-item-row__copy{display:grid;grid-gap:4px;gap:4px}.builder-item-row__copy small{color:var(--muted)}.builder-drag-handle{min-width:28px;min-height:28px;border:none;border-radius:999px;background:rgba(24,38,31,.06);font-weight:800;cursor:-webkit-grab;cursor:grab}.builder-drag-handle,.builder-icon-button{display:inline-flex;align-items:center;justify-content:center;color:var(--muted)}.builder-icon-button{min-width:34px;min-height:34px;padding:0 10px;border:1px solid var(--line);border-radius:999px;background:white}.builder-palette{display:flex;flex-wrap:wrap;gap:10px}.builder-field span{color:var(--text);font-size:.84rem;font-weight:800;letter-spacing:.04em;text-transform:uppercase}.builder-toggle{display:flex;align-items:center;gap:12px;padding:14px 16px;border:1px solid var(--line);border-radius:18px;background:white}.builder-toggle input{width:18px;height:18px;padding:0}.builder-pane__header--flat{padding:0}.builder-modal{position:fixed;inset:0;z-index:40;display:grid;place-items:center;padding:20px}.builder-modal__backdrop{position:absolute;inset:0;background:rgba(12,21,17,.46);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.builder-modal__panel{position:relative;z-index:1;width:min(960px,100%);max-height:min(90vh,980px);overflow:auto}.builder-warning-list{padding:16px;border-radius:18px;background:rgba(194,136,47,.12)}@media (max-width:980px){.builder-layout,.hero-panel,.home-hero,.learning-shell__header-inner,.student-learning{grid-template-columns:1fr}.student-learning,.student-learning--route-hidden{gap:18px}.student-learning__sidebar{position:static}.student-learning--route-hidden .student-learning__sidebar{display:none}.dashboard-main{padding-left:24px}.builder-topbar__actions,.builder-topbar__inner,.builder-topbar__left{width:100%}.builder-pane--inspector,.builder-pane--outline{position:static}}@media (max-width:720px){.builder-workspace{padding-left:0}.builder-stage{width:min(var(--stage-width),calc(100vw - 32px));padding:0 16px}.action-card,.builder-block-card__header,.builder-course-card__head,.builder-course-card__meta,.builder-modal__meta,.builder-module-actions,.builder-module-card__header,.builder-pane__header,.builder-surface__header,.builder-topbar,.builder-topbar__inner,.dashboard-header,.empty-state,.inline-card,.learning-shell__header-inner,.promo-ribbon,.site-footer,.site-header__inner{flex-direction:column;align-items:flex-start}.auth-card,.builder-course-card,.builder-modal__panel,.builder-pane,.builder-surface,.builder-topbar,.card-body,.content-block,.hero-panel,.home-block,.home-hero__main,.home-panel,.home-program-card,.home-showcase-card,.home-step-card,.metric-card,.overview-card,.page-intro__body,.section{padding:22px}.builder-icon-button,.builder-palette,.button,.button-row,.footer-links,.pill-stack,.top-nav,.top-nav a{width:100%}.builder-topbar__actions{justify-content:stretch}.builder-rail-launcher{display:inline-flex!important;width:auto}.home-panel__stats{grid-template-columns:1fr}.learning-shell__main{padding-top:18px}.learning-shell__header-copy strong{white-space:normal}.admin-rail{transform:translateX(-100%);width:min(320px,calc(100vw - 32px))}.admin-rail--open,.admin-rail:focus-within,.admin-rail:hover{transform:translateX(0);width:min(320px,calc(100vw - 32px))}.dashboard-mobile-toggle{display:inline-flex}}