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var(--border-color);background:color-mix(in srgb,var(--brand-secondary) 14%,var(--surface-sunken))}.acct-header__avatar img{width:100%;height:100%;object-fit:cover}.acct-header__initials{display:grid;place-items:center;width:100%;height:100%;color:var(--brand-primary);font-size:1.5rem;font-weight:700}.acct-header__avatar-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;background:#0006;color:#fff;font-size:.7rem;font-weight:700}.acct-header__info{display:flex;flex-direction:column;gap:4px;min-width:0}.acct-header__name{margin:0;color:var(--brand-primary);font-size:1.3rem;font-weight:700;letter-spacing:-.02em;line-height:1.2}.acct-header__email{margin:0;color:var(--text-muted);font-size:.84rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.acct-header__meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:4px}.acct-header__actions{margin-left:auto;flex:none}.acct-role-badge{display:inline-block;padding:3px 10px;border-radius:var(--radius-full);font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em}.acct-role-badge--student{background:#48b89b24;color:#2fa36b}.acct-role-badge--teacher{background:#e0565b1f;color:#c43c41}.acct-role-badge--admin{background:#e8a13d24;color:#b47a16}.acct-role-badge--superadmin{background:#7a5af821;color:#7a5af8}.acct-role-badge--inactive{background:#d645451a;color:#a84343}.acct-status-badge{display:inline-block;padding:3px 10px;border-radius:var(--radius-full);font-size:.72rem;font-weight:700}.acct-status-badge--active{background:#48b89b24;color:#2fa36b}.acct-status-badge--inactive{background:#d645451a;color:#a84343}.acct-completion{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:var(--radius-full);background:color-mix(in srgb,var(--brand-secondary) 10%,transparent);color:var(--text-muted);font-size:.72rem;font-weight:700}.acct-completion--done{background:#48b89b1f;color:#2fa36b}.acct-card{padding:24px 28px;border:1px solid var(--border-color);border-radius:var(--radius-lg);background:var(--brand-surface)}.acct-card__head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px}.acct-card__title{margin:0;color:var(--brand-primary);font-size:1rem;font-weight:700;letter-spacing:-.01em}.acct-info-grid{display:grid;gap:0}.acct-info-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:13px 0;border-bottom:1px solid 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var(--border-color);color:var(--brand-primary)}.acct-btn--secondary:hover{border-color:var(--brand-secondary);background:color-mix(in srgb,var(--brand-secondary) 7%,transparent)}.acct-btn--ghost{background:transparent;color:var(--brand-primary);padding:0 12px}.acct-btn--ghost:hover{background:color-mix(in srgb,var(--brand-secondary) 8%,transparent)}.acct-btn--danger{background:#d6454514;color:#a84343;border:1px solid rgba(214,69,69,.2)}.acct-btn--danger:hover{background:#d6454524}.acct-progress-bar{display:flex;align-items:center;gap:12px;margin-bottom:16px}.acct-progress-bar__track{flex:1;height:6px;border-radius:var(--radius-full);background:var(--surface-sunken);overflow:hidden}.acct-progress-bar__fill{height:100%;border-radius:var(--radius-full);background:var(--brand-secondary);transition:width .35s ease}.acct-progress-bar__label{color:var(--text-muted);font-size:.78rem;font-weight:700;flex:none}.acct-checklist{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:0}.acct-checklist__item{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid var(--border-color);font-size:.84rem;color:var(--text-muted)}.acct-checklist__item:last-child{border-bottom:0}.acct-checklist__item--done{color:var(--text-main)}.acct-checklist__icon{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:50%;flex:none;background:color-mix(in srgb,var(--brand-secondary) 12%,transparent);color:var(--text-muted)}.acct-checklist__item--done .acct-checklist__icon{background:#48b89b29;color:#2fa36b}.acct-checklist__label{flex:1;font-weight:600}.acct-checklist__status{font-size:.72rem;font-weight:600;color:var(--text-muted);flex:none}.acct-empty{display:flex;flex-direction:column;align-items:center;gap:12px;padding:32px 20px;text-align:center;color:var(--text-muted)}.acct-empty>svg{opacity:.4}.acct-empty p{margin:0;max-width:360px;font-size:.86rem;line-height:1.55}.acct-notif-list{display:flex;flex-direction:column;gap:0}.acct-notif-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 0;border-bottom:1px solid var(--border-color)}.acct-notif-row:last-child{border-bottom:0}.acct-notif-row__text{display:flex;flex-direction:column;gap:2px;min-width:0}.acct-notif-row__label{color:var(--text-main);font-size:.88rem;font-weight:600}.acct-notif-row__desc{color:var(--text-muted);font-size:.78rem}.acct-toggle{position:relative;flex:none;width:44px;height:24px;border:0;border-radius:var(--radius-full);background:var(--border-color);cursor:pointer;transition:background .2s;padding:0}.acct-toggle--on{background:var(--brand-secondary)}.acct-toggle__thumb{position:absolute;top:2px;left:2px;width:20px;height:20px;border-radius:50%;background:#fff;box-shadow:0 1px 3px #0000002e;transition:transform .2s}.acct-toggle--on .acct-toggle__thumb{transform:translate(20px)}.acct-toggle:disabled{opacity:.5;cursor:default}.acct-danger-zone{margin-top:24px;padding-top:20px;border-top:1px solid rgba(214,69,69,.2)}.acct-danger-zone__head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.acct-danger-zone__title{margin:0;color:#a84343;font-size:.92rem;font-weight:700}.acct-danger-zone__desc{margin:4px 0 0;color:var(--text-muted);font-size:.8rem;max-width:420px}.acct-modal-scrim{position:fixed;top:0;right:0;bottom:0;left:0;z-index:200;display:grid;place-items:center;background:color-mix(in srgb,#08252c 50%,transparent);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);padding:20px}.acct-modal{width:100%;max-width:440px;background:var(--brand-surface);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:0 20px 60px #00000040;padding:28px;display:flex;flex-direction:column;gap:16px}.acct-modal__head{display:flex;align-items:center;gap:10px}.acct-modal__head>svg{color:#d64545;flex:none}.acct-modal__title{margin:0;color:var(--brand-primary);font-size:1.05rem;font-weight:700}.acct-modal__body{margin:0;color:var(--text-muted);font-size:.86rem;line-height:1.55}.acct-modal__actions{display:flex;align-items:center;justify-content:flex-end;gap:10px;padding-top:4px}@media (max-width: 900px){.acct{grid-template-columns:1fr;gap:0}.acct__sidebar{position:static;display:none;width:100%;padding:12px 0}.acct__sidebar--open{display:block}.acct__sidebar-toggle{display:inline-flex}.acct__scrim{display:block;position:fixed;top:0;right:0;bottom:0;left:0;z-index:80;background:color-mix(in srgb,#08252c 40%,transparent);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.acct__sidebar{position:fixed;top:calc(var(--topbar-height, 64px) + 8px);left:8px;right:8px;z-index:90;background:var(--brand-surface);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:16px;max-height:calc(100vh - var(--topbar-height, 64px) - 24px);overflow-y:auto}.acct__main{gap:20px}}@media (max-width: 620px){.acct-header{flex-direction:column;align-items:flex-start;gap:16px;padding:20px}.acct-header__avatar{width:72px;height:72px}.acct-header__name{font-size:1.15rem}.acct-header__actions{margin-left:0}.acct-card{padding:20px}.acct-form__grid{grid-template-columns:1fr}.acct-info-row{flex-direction:column;align-items:flex-start;gap:4px}.acct-info-value{text-align:left}.acct-info-value--wrap{max-width:none}.acct-form__actions{flex-direction:column;align-items:stretch}.acct-form__actions .acct-btn{width:100%}.acct-header__meta{flex-direction:column;align-items:flex-start}.acct-notif-row{flex-direction:column;align-items:flex-start;gap:10px}.acct-danger-zone__head{flex-direction:column}.acct-modal{padding:20px}.acct-modal__actions{flex-direction:column}.acct-modal__actions .acct-btn{width:100%}}.acct-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.acct-toolbar__title{display:flex;align-items:center;gap:10px}.acct-toolbar__count{font-size:.8rem;font-weight:600;color:var(--adm-muted, #94a3b8)}.acct-badge-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}.acct-badge-card{display:flex;align-items:flex-start;gap:16px;padding:16px;border:1px solid var(--adm-border, #e2e8f0);border-radius:12px;background:var(--adm-frame, #ffffff)}.acct-badge-card__badge{flex:none}.acct-badge-card__meta{flex:1;min-width:0}.acct-badge-card__meta h3{margin:0 0 2px;font-size:.98rem;color:var(--adm-text, #1e293b)}.acct-badge-card__course{margin:0;font-size:.84rem;color:var(--adm-muted, #64748b)}.acct-badge-card__date{margin:6px 0 0;font-size:.76rem;color:var(--adm-faint, #94a3b8)}.acct-badge-chip{display:inline-flex;align-items:center;gap:4px;margin-top:8px;padding:2px 8px;border-radius:999px;font-size:.68rem;font-weight:700}.acct-badge-chip--distinction{color:#b45309;background:#f59e0b24}.acct-badge-card__stat{flex:none;border-left:1px solid var(--adm-border, #e2e8f0);padding-left:14px;text-align:center;display:flex;flex-direction:column}.acct-badge-card__stat-num{font-size:1.3rem;font-weight:800;line-height:1.1;color:var(--brand-primary, #1a5c4c)}.acct-badge-card__stat-label{max-width:118px;font-size:.7rem;line-height:1.3;color:var(--adm-muted, #94a3b8)}@media (max-width: 560px){.acct-badge-grid{grid-template-columns:1fr}}.dash-teacher-art{color:color-mix(in srgb,var(--brand-secondary) 45%,transparent)}.live-mgmt{max-width:1050px;margin:0 auto}.live-mgmt .page-heading h1{margin:12px 0 8px;color:var(--brand-primary);font-size:clamp(2.5rem,5vw,4.5rem);letter-spacing:-.08em}.live-mgmt .page-heading p{color:var(--text-muted)}.live-message{margin:18px 0;padding:13px 16px;border-radius:10px;background:color-mix(in srgb,var(--brand-secondary) 15%,transparent);color:var(--brand-primary);font-weight:700}.live-message.error{background:#f8e1e1;color:#9f4444}.live-create{margin:0 auto 28px;max-width:860px;padding:clamp(16px,4vw,40px)}.live-create h2{margin:0 0 24px;color:var(--brand-primary);letter-spacing:-.04em}.live-create .form-grid{gap:24px}.live-create .field,.live-modal .field{gap:8px}.live-create .field input,.live-create .field select,.live-modal .field input,.live-modal .field select{font-weight:600}.live-create .field input::placeholder,.live-modal .field input::placeholder{color:var(--text-muted);opacity:.8;font-weight:400}.live-create .field-hint,.live-modal .field-hint{justify-self:start;margin-top:0;color:var(--text-muted);font-size:.78rem;font-weight:500;line-height:1.45}.live-create .actions{margin-top:0}.live-form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}.live-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;display:grid;place-items:center;padding:20px;background:#0a1e248c;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.live-modal{width:100%;max-width:640px;max-height:90vh;overflow-y:auto;padding:clamp(18px,4vw,32px);border:1px solid var(--border-color);border-radius:18px;background:var(--brand-surface);box-shadow:var(--shadow-soft)}.live-modal-head{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:22px}.live-modal-head h2{margin:0;color:var(--brand-primary);letter-spacing:-.04em}.live-modal-close{flex:0 0 auto;border:0;background:transparent;color:var(--text-muted);font-size:1.7rem;line-height:1;cursor:pointer}.live-modal-close:hover{color:var(--brand-primary)}.live-modal .form-grid{gap:22px}.live-modal .actions{margin-top:0}.live-list-heading{display:flex;align-items:center;gap:12px;margin-bottom:14px}.live-list-heading h2{margin:0;color:var(--brand-primary);letter-spacing:-.04em}.live-empty{padding:30px 0;color:var(--text-muted);text-align:center}.live-table{padding:6px 22px;overflow-x:auto}.live-row{display:grid;grid-template-columns:minmax(180px,1.4fr) minmax(200px,1fr) auto auto;gap:16px;align-items:center;padding:16px 4px;border-top:1px solid var(--border-color)}.live-row:first-child{border-top:0}.live-row-main{display:grid;min-width:0}.live-row-main strong{color:var(--brand-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.live-row-main small{color:var(--text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.live-row-host{font-style:italic;opacity:.9}.live-row-time{display:flex;align-items:center;flex-wrap:wrap;gap:4px 8px;min-width:0;color:var(--text-muted);font-size:.82rem;white-space:nowrap}.live-row-arrow{opacity:.5}.live-row>.badge{justify-self:start}.live-copy,.live-edit{color:var(--brand-primary)}.live-end{color:#c0781e}.live-delete{color:#a64c4c}.live-edit-card{padding:20px 22px;border-top:1px solid var(--border-color);border-radius:0 0 12px 12px;background:color-mix(in srgb,var(--brand-page) 65%,var(--brand-surface))}.live-edit-card h3{margin:0 0 16px;color:var(--brand-primary);letter-spacing:-.03em}.live-edit-card .form-grid{max-width:none;gap:20px}.live-edit-card .actions{margin-top:4px}.live-audience{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.live-audience-option{display:grid;gap:4px;text-align:left;padding:12px 14px;border:1px solid var(--border-color);border-radius:12px;background:var(--brand-surface);color:var(--text-muted);cursor:pointer;transition:border-color .15s ease,background .15s ease,color .15s ease}.live-audience-option strong{color:var(--text-main);font-size:.9rem}.live-audience-option span{font-size:.74rem;line-height:1.4;font-weight:500}.live-audience-option:hover{border-color:color-mix(in srgb,var(--brand-primary) 40%,var(--border-color))}.live-audience-option.selected{border-color:var(--brand-primary);background:color-mix(in srgb,var(--brand-secondary) 14%,var(--brand-surface));box-shadow:0 0 0 1px var(--brand-primary) inset}.live-audience-option.selected strong{color:var(--brand-primary)}.field-hint-block{justify-self:start;padding:11px 14px;border:1px dashed var(--border-color);border-radius:10px;color:var(--text-muted);background:color-mix(in srgb,var(--brand-secondary) 8%,var(--brand-surface));font-size:.84rem;font-weight:600;line-height:1.5}.student-picker{display:grid;gap:10px;width:100%}.student-picker-toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.student-picker-search{flex:1 1 220px;padding:10px 13px;border:1px solid var(--border-color);border-radius:10px;background:var(--brand-surface);color:var(--text-main)}.student-picker-views{display:inline-flex;padding:3px;border:1px solid var(--border-color);border-radius:10px;background:var(--brand-page)}.student-picker-view{border:0;background:transparent;padding:6px 12px;border-radius:7px;font-size:.8rem;font-weight:700;color:var(--text-muted)}.student-picker-view.active{background:var(--brand-primary);color:var(--brand-on-primary, #fff)}.student-picker-count{margin:0;font-size:.78rem;font-weight:700;color:var(--text-muted)}.student-picker-empty{margin:0;padding:18px 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12px;resize:vertical;line-height:1.5}.cl-field__hint{color:var(--adm-muted);font-size:.72rem}.cl-field__error{color:var(--adm-danger-ink, #a84343);font-size:.72rem;font-weight:600}.cl-meta-grid{display:grid;gap:0}.cl-meta-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--adm-border)}.cl-meta-row:last-child{border-bottom:0}.cl-meta-label{color:var(--adm-muted);font-size:.78rem;font-weight:600}.cl-meta-value{color:var(--adm-ink);font-size:.82rem;font-weight:600;text-align:right}.cl-meta-value--mono{font-family:monospace}.cl-tips{margin:0;padding:0 0 0 16px;display:flex;flex-direction:column;gap:6px}.cl-tips li{color:var(--adm-muted);font-size:.8rem;line-height:1.45}.cl-table-card{overflow-x:auto;-webkit-overflow-scrolling:touch}.col-identity{width:42%}.col-count{width:14%}.col-date{width:18%}.col-actions{width:26%}.cl-spinner{width:28px;height:28px;border:3px solid var(--adm-border);border-top-color:var(--adm-accent);border-radius:50%;animation:cl-spin .7s linear infinite}@keyframes cl-spin{to{transform:rotate(360deg)}}@media (max-width: 1024px){.cl-editor__grid{grid-template-columns:1fr}.cl-editor__sidebar{order:-1}}@media (max-width: 768px){.cl-editor__header{flex-direction:column;gap:12px}.cl-editor__header-actions{width:100%}.cl-editor__header-actions .cl-btn{flex:1}.cl-card{padding:16px}}@media (max-width: 600px){.adm-row-actions .adm-btn--sm{height:28px;padding:0 8px;font-size:.72rem}.adm-row-actions .adm-btn--sm svg{display:none}.adm-row-actions .adm-btn--sm span{display:inline}}.verify-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:40px 20px;background:var(--bg, #f8fafc)}.verify-card{background:var(--adm-frame, #fff);border-radius:12px;box-shadow:0 4px 24px #00000014;padding:40px;max-width:480px;width:100%;text-align:center}.verify-loading{padding:32px 0}.verify-spinner{animation:verify-spin 1s linear infinite;color:var(--adm-accent, #0ea5e9)}@keyframes verify-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.verify-result h2{margin:12px 0 8px;font-size:1.2rem}.verify-result p{margin:4px 0;color:var(--adm-muted, #64748b);font-size:.9rem}.verify-result--not-found{color:var(--adm-muted, #64748b)}.verify-result--revoked{color:#dc2626}.verify-result--valid,.verify-seal{color:var(--brand-primary, #1a5c4c)}.verify-detail{font-size:.82rem}.verify-fields{margin-top:20px;text-align:left;display:grid;gap:12px}.verify-field{display:flex;flex-direction:column;gap:2px}.verify-field__label{font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--adm-muted, #94a3b8)}.verify-field__value{font-size:.92rem;color:var(--adm-ink, #1e293b);font-weight:500}.verify-field__distinction{color:#b8860b}:root{font-family:var(--font-family, "Inter", ui-sans-serif, system-ui, 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var(--border-color)}.brand{display:flex;align-items:center;gap:12px;font-weight:800;color:var(--brand-primary);text-decoration:none;letter-spacing:-.03em}.brand-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:12px;background:var(--brand-primary);color:#fff;font-size:.82rem}.nav-links{display:flex;align-items:center;gap:26px}.nav-links a{text-decoration:none;color:var(--text-muted);font-weight:600}.nav-links a:hover{color:var(--brand-primary)}.page-heading{margin-bottom:28px}.page-heading h1,.page-heading h2{margin:0 0 8px;letter-spacing:-.04em}.page-heading p{margin:0;color:var(--text-muted)}.card{background:var(--brand-surface);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-soft);padding:24px}.grid{display:grid;gap:20px}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.button{border:0;border-radius:10px;padding:11px 17px;background:var(--brand-primary);color:#fff;font-weight:700}.button.secondary{background:color-mix(in srgb,var(--brand-secondary) 18%,transparent);color:var(--brand-primary)}.button.ghost{background:transparent;color:var(--text-muted);border:1px solid var(--border-color)}.form-grid{display:grid;gap:16px;max-width:760px}.field{display:grid;gap:7px;color:var(--text-muted);font-weight:700;font-size:.9rem}.field input,.field select{width:100%;padding:12px 13px;border:1px solid var(--border-color);border-radius:10px;background:var(--brand-surface);color:var(--text-main)}.color-picker-wrapper{display:flex;align-items:center;gap:10px;width:100%}.field-hint{justify-self:end;margin-top:-22px;font-size:.78rem;color:var(--brand-secondary)}.field input[type=range]{height:6px;padding:0;border:none;border-radius:6px;background:color-mix(in srgb,var(--brand-primary) 20%,var(--border-color));accent-color:var(--brand-secondary);cursor:pointer}.field input.color-picker-swatch{flex:0 0 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40%,var(--border-color));background:color-mix(in srgb,var(--brand-secondary) 10%,var(--brand-surface))}.theme-toggle svg{width:18px;height:18px}.settings-status{display:flex;align-items:center;gap:8px;margin:-14px 0 20px;font-size:.85rem;color:var(--text-muted);font-weight:600}.settings-status-dot{display:inline-flex;align-items:center;gap:7px}.settings-status-dot:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--text-muted)}.settings-status-dot.saving:before{background:#e0a93c;animation:settings-pulse 1s infinite}.settings-status-dot.saved:before{background:#3cb46e}.settings-status-dot.error:before{background:#d64545}@keyframes settings-pulse{50%{opacity:.35}}.reveal{opacity:0;will-change:opacity,transform;transition:opacity .7s ease,transform .7s cubic-bezier(.22,1,.36,1);transition-delay:var(--reveal-delay, 0ms)}.reveal-up{transform:translateY(40px)}.reveal-down{transform:translateY(-40px)}.reveal-left{transform:translate(-40px)}.reveal-right{transform:translate(40px)}.reveal-zoom{transform:scale(.9)}.reveal-visible{opacity:1;transform:none}@media (prefers-reduced-motion: reduce){.reveal{opacity:1;transform:none;transition:none}}.settings-card{margin-bottom:24px;max-width:920px}.settings-card h2{margin:0 0 4px;color:var(--brand-primary);font-size:1.2rem;letter-spacing:-.03em}.settings-card>p{margin:0 0 18px;color:var(--text-muted);font-size:.88rem}.settings-actions{display:flex;gap:10px;flex-wrap:wrap}.back-button{display:inline-flex;align-items:center;gap:8px;margin-bottom:18px;padding:9px 14px;border:1px solid var(--border-color);border-radius:10px;background:var(--brand-surface);color:var(--text-muted);font-weight:700;cursor:pointer;transition:color .15s ease,border-color .15s ease,background .15s ease}.back-button:hover{color:var(--brand-primary);border-color:color-mix(in 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.not-found__countdown{font-size:var(--text-sm)}.media-picker-field{gap:9px}.media-picker-label{font-weight:700;font-size:.9rem;color:var(--text-muted)}.media-picker-row{display:flex;align-items:center;gap:14px}.media-picker-preview{flex:0 0 120px;height:68px;border-radius:10px;overflow:hidden;border:1px solid var(--border-color);background:color-mix(in srgb,var(--brand-primary) 8%,var(--brand-surface))}.media-picker-preview img{width:100%;height:100%;object-fit:cover;display:block}.media-picker-placeholder{flex:0 0 120px;height:68px;display:grid;place-items:center;border:1px dashed var(--border-color);border-radius:10px;color:var(--text-muted);font-size:.78rem;text-align:center;padding:4px}.media-picker-actions{display:flex;gap:8px;flex-wrap:wrap}@media (max-width: 800px){.nav-links{gap:10px;font-size:.85rem}.grid-3{grid-template-columns:1fr}}:root{--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--space-7: 40px;--space-8: 48px;--space-9: 64px;--radius-sm: 10px;--radius-md: 14px;--radius-lg: 18px;--radius-xl: 22px;--radius-full: 999px;--shadow-xs: 0 1px 2px rgba(9, 42, 52, .06);--shadow-sm: 0 2px 8px rgba(9, 42, 52, .07);--shadow-md: 0 10px 30px rgba(9, 42, 52, .1);--shadow-lg: 0 18px 44px rgba(9, 42, 52, .16);--font-ui: var(--font-family, "Inter", ui-sans-serif, system-ui, sans-serif);--text-xs: .72rem;--text-sm: .8rem;--text-base: .92rem;--text-md: 1rem;--text-lg: 1.15rem;--text-xl: 1.4rem;--text-2xl: clamp(1.6rem, 1.2rem + 1vw, 2rem);--text-page-title: clamp(1.55rem, 1.15rem + 1.4vw, 2.15rem);--leading-tight: 1.2;--leading-snug: 1.4;--leading-body: 1.65;--tracking-display: -.03em;--control-sm: 36px;--control-md: 42px;--control-lg: 48px;--sidebar-width: 264px;--topbar-height: 64px;--surface-card: color-mix(in srgb, var(--brand-surface) 88%, #ffffff 12%);--surface-raised: var(--brand-surface);--surface-sunken: color-mix(in srgb, var(--brand-surface) 78%, var(--brand-page));--surface-tint: color-mix(in srgb, var(--brand-secondary) 9%, var(--brand-surface))}:root[data-theme=dark]{--surface-card: color-mix(in srgb, var(--brand-surface) 84%, #ffffff 16%);--surface-sunken: color-mix(in srgb, var(--brand-page) 60%, var(--brand-surface));--shadow-xs: 0 1px 2px rgba(0, 0, 0, .25);--shadow-sm: 0 2px 10px rgba(0, 0, 0, .3);--shadow-md: 0 12px 32px rgba(0, 0, 0, .34);--shadow-lg: 0 20px 48px rgba(0, 0, 0, .42)}:focus-visible{outline:2px solid var(--brand-secondary);outline-offset:2px;border-radius:6px}.scroll-panel{scrollbar-width:thin;scrollbar-color:color-mix(in srgb,var(--text-muted) 35%,transparent) transparent}.scroll-panel::-webkit-scrollbar{width:8px;height:8px}.scroll-panel::-webkit-scrollbar-thumb{border-radius:999px;background:color-mix(in srgb,var(--text-muted) 30%,transparent)}.skeleton{display:inline-block;border-radius:var(--radius-sm);background:linear-gradient(90deg,color-mix(in srgb,var(--text-muted) 14%,transparent) 25%,color-mix(in srgb,var(--text-muted) 26%,transparent) 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var(--border-color);border-radius:var(--radius-lg);overflow:hidden;background:var(--surface-card)}.course-card-skeleton__body{padding:var(--space-4);display:grid;gap:10px}.course-card-skeleton__row{display:flex;justify-content:space-between;align-items:center;gap:10px}.progress{display:flex;align-items:center;gap:10px;min-width:0}.progress__track{flex:1;min-width:40px;height:8px;border-radius:999px;overflow:hidden;background:color-mix(in srgb,var(--brand-primary) 12%,transparent)}.progress__fill{height:100%;border-radius:inherit;background:var(--brand-secondary);transition:width .45s cubic-bezier(.22,1,.36,1)}.progress--sm .progress__track{height:6px}.progress--lg .progress__track{height:11px}.progress__value{flex:0 0 auto;min-width:34px;text-align:right;font-size:var(--text-xs);font-weight:800;color:var(--brand-primary);font-variant-numeric:tabular-nums}.metric-card{display:flex;align-items:center;gap:var(--space-3);min-width:0;padding:var(--space-4) var(--space-5);border:1px solid var(--border-color);border-radius:var(--radius-md);background:var(--surface-card)}.metric-card__icon{flex:none;display:grid;place-items:center;width:44px;height:44px;border-radius:13px;background:color-mix(in srgb,var(--brand-secondary) 16%,transparent);color:var(--brand-secondary)}.metric-card--cyan .metric-card__icon{background:color-mix(in srgb,#38bdf8 16%,transparent);color:#0ea5e9}.metric-card--lavender .metric-card__icon{background:color-mix(in srgb,#a78bfa 18%,transparent);color:#8b5cf6}.metric-card--coral .metric-card__icon{background:color-mix(in srgb,#fb7185 16%,transparent);color:#f43f5e}.metric-card--amber .metric-card__icon{background:color-mix(in srgb,#f59e0b 17%,transparent);color:#d97706}.metric-card__body{display:grid;gap:2px;min-width:0}.metric-card__value{color:var(--brand-primary);font-size:1.65rem;line-height:1.05;letter-spacing:var(--tracking-display);font-variant-numeric:tabular-nums}.metric-card__label{color:var(--text-muted);font-size:var(--text-sm);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.metric-card__hint{color:var(--text-muted);font-size:var(--text-xs);opacity:.85;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.empty-state{display:flex;flex-direction:column;align-items:center;gap:var(--space-3);padding:var(--space-7) var(--space-5);border:1px dashed color-mix(in srgb,var(--text-muted) 35%,var(--border-color));border-radius:var(--radius-md);text-align:center}.empty-state--compact{padding:var(--space-5) var(--space-4);flex-direction:row;text-align:left}.empty-state__icon{display:grid;place-items:center;width:52px;height:52px;flex:none;border-radius:50%;background:color-mix(in 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srgb,var(--text-muted) 35%,var(--border-color));border-radius:var(--radius-md);text-align:center}.viewer-error p{margin:0;max-width:46ch;color:var(--text-muted);font-size:var(--text-base);line-height:var(--leading-body)}.viewer-error__retry{display:inline-flex;align-items:center;justify-content:center;min-height:36px;padding:0 var(--space-5);border:0;border-radius:999px;background:var(--brand-primary);color:var(--brand-on-primary, #fff);font-weight:800;font-size:var(--text-sm);letter-spacing:var(--tracking-display);cursor:pointer;transition:background .2s ease}.viewer-error__retry:hover{background:color-mix(in srgb,var(--brand-primary) 88%,#000)}.viewer-error__retry:focus-visible{outline:2px solid var(--brand-secondary);outline-offset:2px}.viewer-embed-invalid{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-3);min-height:180px;padding:var(--space-5);background:var(--surface-sunken);border:1px dashed color-mix(in srgb,var(--text-muted) 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i{background:#c9a24b}.dl-assign__empty{padding:24px;text-align:center;color:var(--adm-muted);font-size:.85rem}.dl-assign__foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 20px;border-top:1px solid var(--adm-border)}.dl-assign__note{font-size:.74rem;color:var(--adm-muted);line-height:1.5;flex:1}.dl-assign__note--ok{color:var(--adm-accent-ink);font-weight:600}@media (max-width: 640px){.dl-empty-state{padding:44px 18px}.dl-assign{width:100%;max-height:86vh}.dl-assign__row{flex-wrap:wrap}}@media (max-width: 480px){.dl-create-btn{height:44px;width:100%}}