:root{--shell-bg:#f4f6fb;--shell-navy:#1c2560;--shell-orange:#ff8a00;--shell-line:#dfe4f2;--shell-muted:#5e6790}*{box-sizing:border-box}body,html{margin:0;padding:0}body{font-family:Inter,Segoe UI,system-ui,Arial,sans-serif;background:var(--shell-bg);color:#222a4d}a{color:inherit}.skip-link{position:absolute;left:8px;top:-60px;z-index:100;background:var(--shell-orange);color:#1c2560;font-weight:700;padding:10px 16px;border-radius:0 0 10px 10px;text-decoration:none;transition:top .15s}.skip-link:focus{top:0}:focus-visible{outline:3px solid var(--shell-orange);outline-offset:2px;border-radius:4px}.app-header a:focus-visible,.app-header button:focus-visible{outline-color:#fff}.app-header{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:14px 24px;background:var(--shell-navy);color:#fff}.app-header .brand{font-weight:800;letter-spacing:.02em}.brand-lockup{display:inline-flex;align-items:center;gap:10px}.brand-logo{height:26px;width:auto;display:block}.app-header .spacer{flex:1 1}.a11y-bar{display:flex;gap:8px;margin-right:14px}.a11y-toggle{font:inherit;font-size:12px;cursor:pointer;background:hsla(0,0%,100%,.08);color:#fff;border:1px solid hsla(0,0%,100%,.35);border-radius:999px;padding:4px 10px}.a11y-toggle[aria-pressed=true]{background:var(--cst-orange,#ff8a00);border-color:var(--cst-orange,#ff8a00);color:#000;font-weight:700}.app-main{max-width:980px;margin:0 auto;padding:28px 20px}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));grid-gap:16px;gap:16px}.course-card{display:block;text-decoration:none;background:#fff;border:1px solid var(--shell-line);border-radius:14px;padding:20px;transition:box-shadow .2s,transform .2s}.course-card:hover{box-shadow:0 10px 30px rgba(28,37,96,.1);transform:translateY(-2px)}.course-card h3{margin:0 0 8px;color:var(--shell-navy)}.cert-link{display:inline-block;margin-top:12px;font:inherit;font-size:13px;font-weight:700;cursor:pointer;background:var(--cst-orange,#ff8a00);color:#1c2560;border:none;border-radius:999px;padding:6px 14px}.course-card .meta{color:var(--shell-muted);font-size:14px;display:block}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));grid-gap:14px;gap:14px;margin:18px 0 8px}.stat-tile{background:#fff;border:1px solid var(--shell-line);border-radius:14px;padding:18px 20px}.stat-tile .num{font-size:30px;font-weight:800;line-height:1;color:var(--shell-navy)}.stat-tile .lbl{color:var(--shell-muted);font-size:13px;margin-top:6px}.dash-section{margin:30px 0 0}.dash-section h2{color:var(--shell-navy);font-size:18px;margin:0 0 12px;display:flex;align-items:center;gap:10px}.section-count{font-size:12px;font-weight:700;color:var(--shell-muted);background:var(--shell-bg);border:1px solid var(--shell-line);border-radius:999px;padding:2px 9px}.lc-progress{height:8px;background:var(--shell-line);border-radius:999px;overflow:hidden;margin:14px 0 6px}.lc-progress>span{display:block;height:100%;background:var(--shell-orange);border-radius:999px}.lc-pct{font-size:12px;color:var(--shell-muted)}.card-cta{display:inline-block;margin-top:12px;font-size:13px;font-weight:700;text-decoration:none;background:var(--shell-navy);color:#fff;border-radius:999px;padding:7px 16px}.card-cta:hover{background:#161d4f}.empty-state{background:#fff;border:1px dashed var(--shell-line);border-radius:14px;padding:30px;text-align:center;color:var(--shell-muted);margin-top:18px}.help-panel{background:#fff;border:1px solid var(--shell-line);border-left:4px solid var(--shell-orange);border-radius:14px;padding:22px 24px;margin-top:36px}.help-panel h2{margin:0 0 6px;color:var(--shell-navy);font-size:18px}.help-panel ul{margin:8px 0 0;padding-left:20px;color:var(--shell-muted);line-height:1.7}.help-links{display:flex;gap:20px;flex-wrap:wrap;margin-top:8px}.help-links a{color:var(--shell-navy);font-weight:700;text-decoration:none}.help-links a:hover{text-decoration:underline}.auth-wrap{max-width:380px;margin:8vh auto;background:#fff;border:1px solid var(--shell-line);border-radius:16px;padding:32px}.auth-wrap h1{margin-top:0;color:var(--shell-navy)}.auth-page{max-width:380px;margin:8vh auto}.auth-page .auth-wrap{margin:0;max-width:none}.auth-logo-top{display:block;height:38px;width:auto;margin:0 auto 22px}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.field label{font-weight:600;font-size:14px}.field input{padding:11px 12px;border:1.5px solid var(--shell-line);border-radius:10px;font:inherit}.btn-primary{width:100%;padding:12px;border:none;border-radius:10px;background:var(--shell-navy);color:#fff;font-weight:700;cursor:pointer}.sso-btn{display:block;text-align:center;margin-top:12px;padding:11px;border:1px solid var(--shell-navy);border-radius:10px;color:var(--shell-navy);font-weight:700;text-decoration:none}.error{color:#b23a48;font-size:14px;margin:8px 0}.auth-alt{text-align:center;margin:14px 0 0;font-size:14px}.auth-alt a{color:var(--shell-navy);font-weight:600}.auth-devlink{margin-top:12px;padding:10px 12px;border:1px dashed var(--shell-line);border-radius:10px;font-size:13px;word-break:break-all}.muted{color:var(--shell-muted)}.manage-tabs{display:flex;gap:6px;margin-bottom:18px;border-bottom:1px solid var(--shell-line)}.manage-tab{font:inherit;cursor:pointer;padding:10px 16px;background:none;color:var(--shell-muted);font-weight:600;border:none;border-bottom:2px solid transparent;margin-bottom:-1px}.manage-tab.is-active{color:var(--shell-navy);border-bottom-color:var(--shell-orange)}.manage-toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}.m-input{padding:9px 11px;border:1.5px solid var(--shell-line);border-radius:9px;font:inherit}.manage-list{list-style:none;padding:0;margin:0 0 12px;display:flex;flex-direction:column;gap:6px}.manage-row{justify-content:space-between;gap:12px;padding:9px 12px;border:1px solid var(--shell-line);border-radius:9px;background:#fff}.manage-row,.manage-row__right{display:flex;align-items:center}.manage-row__right{gap:10px}.manage-status{color:var(--shell-navy);font-weight:600;font-size:13px;text-transform:capitalize}.manage-status.is-fail{color:#b23a48}.license-card{border:1px solid var(--shell-line);border-radius:12px;padding:16px;margin-bottom:14px;background:#fff}.license-card h3{margin:0 0 4px;color:var(--shell-navy)}.manage-msg{color:var(--shell-navy);font-weight:600}.admin-status-warn{color:#b23a48;font-weight:600}.report-headline{font-size:15px;margin:4px 0 12px}.report-rate{display:inline-block;width:70px;height:8px;background:var(--shell-line);border-radius:999px;overflow:hidden;vertical-align:middle;margin-right:6px}.report-rate span{display:block;height:100%;background:#1f8a5b}.manage-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--shell-line);border-radius:12px;overflow:hidden}.manage-table td,.manage-table th{text-align:left;padding:10px 14px;border-bottom:1px solid var(--shell-line)}.manage-table th{background:var(--shell-bg);font-size:13px;color:var(--shell-muted)}.btn-ghost{background:transparent;border:1px solid var(--shell-line);color:var(--shell-navy);border-radius:8px;padding:5px 10px;cursor:pointer;font-size:13px}.cert-state{display:block;font-size:13px;font-weight:600;margin-top:6px}.cert-state--ok{color:#1f8a5b}.cert-state--soon{color:#a35a00}.cert-state--gone{color:#b23a48}.verify-badge{display:inline-block;font-weight:800;font-size:16px;border-radius:999px;padding:8px 18px;margin:0 0 18px}.verify-badge--valid{background:#eaf6ee;color:#1f8a5b;border:1px solid #1f8a5b}.verify-badge--expired{background:#fff4e0;color:#a35a00;border:1px solid #d68a1a}.verify-badge--revoked{background:#fdeef0;color:#b23a48;border:1px solid #b23a48}.verify-facts{display:grid;grid-template-columns:max-content 1fr;grid-gap:8px 18px;gap:8px 18px;margin:0 0 12px}.verify-facts dt{color:var(--shell-muted);font-size:13px}.verify-facts dd{margin:0;font-weight:600;color:var(--shell-navy)}@media (max-width:720px){.verify-facts{grid-template-columns:1fr;gap:2px 0}.verify-facts dd{margin-bottom:10px}}.course-title-chip{color:#cdd3ee;font-size:14px;max-width:32ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.save-chip{font-size:12px;font-weight:600;border-radius:999px;padding:4px 10px;margin-right:10px;white-space:nowrap}.save-chip--saved,.save-chip--saving{color:#cdd3ee;background:hsla(0,0%,100%,.08)}.save-chip--error{color:#1c2560;background:#ffd27a;border:1px solid #ffb200}.player-state{background:#fff;border:1px solid var(--shell-line);border-radius:14px;padding:30px;max-width:560px;margin:40px auto;text-align:center}.player-state h1{color:var(--shell-navy);font-size:22px;margin:0 0 8px}.player-state__actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:18px}.player-state__actions .btn-ghost,.player-state__actions .card-cta{text-decoration:none}@media (max-width:720px){.app-header{padding:10px 14px;gap:8px}.brand-logo{height:22px}.app-header .spacer{flex-basis:100%;height:0}.course-title-chip{max-width:100%;order:10;flex-basis:100%}.a11y-bar{margin-right:0;flex-wrap:wrap}.app-main{padding:20px 14px}.manage-toolbar{flex-direction:column;align-items:stretch}.m-input{width:100%}.auth-page,.auth-wrap{max-width:none;margin:4vh 14px}.auth-wrap{padding:24px 18px}.stat-grid{grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:10px}.card-grid{grid-template-columns:1fr}.manage-row{flex-direction:column;align-items:stretch;gap:8px}.manage-row__right{justify-content:space-between}.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}.manage-table{min-width:560px}}@media (prefers-reduced-motion:reduce){*,:after,:before{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}.course-card:hover{transform:none}}.assign-row{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap}.assign-due{display:flex;flex-direction:column;gap:4px;font-size:13px}@media (max-width:720px){.assign-row{flex-direction:column;align-items:stretch}.assign-row .m-input{width:100%}}.eval{text-align:left;background:#fff;border:1px solid var(--shell-line);border-radius:12px;padding:16px 18px;margin-top:16px}.eval__q{font-weight:600;color:var(--shell-navy);margin:12px 0 6px;font-size:14px}.eval__q:first-child{margin-top:0}.eval__stars{display:flex;gap:4px}.eval__star{font-size:26px;line-height:1;background:none;border:none;cursor:pointer;color:var(--shell-line);padding:2px 4px}.eval__star.is-on{color:var(--shell-orange)}.eval__star:focus-visible{outline:3px solid var(--shell-orange);outline-offset:2px;border-radius:4px}.eval__yn{display:flex;gap:8px}.cst-sr-tag,.cst-visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.cst-player{--_radius:16px;font-family:var(--bd,system-ui,sans-serif);color:var(--text,#222a4d);background:var(--page,#f4f6fb);max-width:880px;margin:0 auto;padding:clamp(16px,4vw,40px)}.cst-player__progress{height:8px;background:var(--line,#dfe4f2);border-radius:999px;overflow:hidden;margin-bottom:24px}.cst-player__progress-fill{height:100%;background:var(--cst-orange,#ff8a00);transition:width .3s ease}.cst-screen__title{font-family:var(--hd,system-ui,sans-serif);font-size:clamp(22px,4vw,30px);font-weight:800;color:var(--cst-navy,#1c2560);margin:0 0 20px;outline:none}.cst-screen__blocks{display:flex;flex-direction:column;gap:18px}.cst-screen__presenter{margin:0 0 20px}.cst-screen__presenter video{width:100%;max-width:720px;border-radius:12px;display:block}.cst-block{font-size:clamp(15px,2.5vw,17px);line-height:1.6}.cst-block--unknown{padding:12px 16px;border:1px dashed var(--line,#dfe4f2);border-radius:10px;color:var(--muted,#5e6790);background:var(--tint,#eef1fa)}.cst-call{border-radius:12px;padding:16px 18px;border-left:4px solid var(--cst-orange,#ff8a00);background:var(--tintw,#fff3e2)}.cst-call--tip{border-left-color:var(--green,#1f8a5b);background:#eaf6ee}.cst-call--warn{border-left-color:var(--red,#b23a48);background:#fdeef0}.cst-call--key{border-left-color:var(--cst-orange,#ff8a00);background:#fff3e2}.cst-list{padding-left:22px}.cst-list li{margin:4px 0}.cst-image{margin:0 0 4px}.cst-image img{width:100%;height:auto;border-radius:12px;display:block}.cst-image figcaption{color:var(--muted,#5e6790);font-size:14px;margin-top:6px}.cst-image--small{max-width:240px}.cst-image--medium{max-width:440px}.cst-image--large{max-width:680px}.cst-image--full{max-width:100%}.cst-image--center{margin-left:auto;margin-right:auto}.cst-image--left{margin-right:auto;margin-left:0}.cst-image--right{margin-left:auto;margin-right:0}.cst-call mark,.cst-text mark,.ed-richtext mark{background:#fff3cd;padding:0 2px;border-radius:3px}.cst-divider{border:none;border-top:1px solid var(--line,#dfe4f2);margin:8px 0}.cst-divider--dashed{border-top:2px dashed var(--line,#dfe4f2)}.cst-divider--dots{border-top:3px dotted var(--line,#dfe4f2)}.cst-divider--thick{border-top:4px solid var(--cst-orange,#ff8a00);border-radius:2px}.cst-divider--spacer{border:none;height:32px;margin:0}.cst-bg{padding:16px 18px;border-radius:12px}.cst-bg--tint{background:var(--tint,#eef1fa)}.cst-bg--green{background:#eaf6ee}.cst-bg--orange{background:#fff3e2}.cst-bg--grey{background:#f4f6fb}.cst-bg--navy{background:var(--cst-navy,#1c2560);color:#fff}.cst-bg--navy a,.cst-bg--navy h1,.cst-bg--navy h2,.cst-bg--navy h3,.cst-bg--navy h4{color:#fff}.cst-fig{margin:0}@media (max-width:700px){.cst-fig{overflow-x:auto;-webkit-overflow-scrolling:touch}.cst-fig>svg{min-width:560px}}.cst-fig__placeholder{border:1px dashed var(--line,#dfe4f2);border-radius:12px;padding:28px;text-align:center;color:var(--muted,#5e6790);background:var(--card,#fff)}.cst-avatar video{width:100%;border-radius:12px;display:block}.cst-avatar--pending{border:1px dashed var(--line,#dfe4f2);border-radius:12px;padding:24px;text-align:center;color:var(--muted,#5e6790);background:var(--card,#fff)}.cst-prompt{font-weight:600;color:var(--cst-navy,#1c2560);margin:0 0 12px}.cst-flip__grid{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}.cst-flip__card{flex:0 1 220px;min-height:110px;border:1.5px solid var(--line,#dfe4f2);border-radius:12px;background:var(--card,#fff);cursor:pointer;padding:16px;font:inherit;color:inherit;transition:border-color .2s,background .2s}.cst-flip__card.is-flipped{background:var(--cst-navy,#1c2560);color:#fff;border-color:var(--cst-navy,#1c2560)}.cst-flip__card:focus-visible{outline:3px solid var(--cst-orange,#ff8a00);outline-offset:2px}.cst-reveal__list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.cst-reveal__toggle{width:100%;text-align:left;font:inherit;cursor:pointer;padding:12px 16px;border-radius:10px;border:1.5px solid var(--line,#dfe4f2);background:var(--card,#fff);color:var(--cst-navy,#1c2560);font-weight:600}.cst-reveal__toggle:focus-visible{outline:3px solid var(--cst-orange,#ff8a00);outline-offset:2px}.cst-reveal__body{padding:10px 16px;color:var(--text,#222a4d)}.cst-sort__current{display:flex;flex-direction:column;gap:14px;align-items:center;padding:16px}.cst-sort__item{display:inline-block;font-size:20px;font-weight:700;color:var(--cst-navy,#1c2560);padding:14px 22px;border-radius:12px;background:var(--tint,#eef1fa)}.cst-sort__buckets{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}.cst-sort__bucket{font:inherit;cursor:pointer;padding:12px 20px;border-radius:10px;border:1.5px solid var(--cst-navy,#1c2560);background:var(--card,#fff);color:var(--cst-navy,#1c2560);font-weight:600}.cst-sort__bucket:focus-visible{outline:3px solid var(--cst-orange,#ff8a00);outline-offset:2px}.cst-sort__status{min-height:22px;color:var(--muted,#5e6790);font-weight:600}.cst-eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:12px;font-weight:700;color:var(--cst-orange,#ff8a00);margin-bottom:6px}.cst-check__stem{font-weight:700;color:var(--cst-navy,#1c2560);font-size:18px}.cst-check__options{list-style:none;padding:0;margin:12px 0;display:flex;flex-direction:column;gap:8px}.cst-check__option{width:100%;text-align:left;display:flex;gap:12px;align-items:center;font:inherit;cursor:pointer;padding:12px 16px;border-radius:10px;border:1.5px solid var(--line,#dfe4f2);background:var(--card,#fff);color:inherit}.cst-check__option:disabled{cursor:default}.cst-check__option .cst-check__key{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:6px;background:var(--tint,#eef1fa);font-weight:700;color:var(--cst-navy,#1c2560);flex:none}.cst-check__option.is-correct{border-color:var(--green,#1f8a5b);background:#eaf6f0}.cst-check__option.is-wrong{border-color:var(--red,#b23a48);background:#fdeef0}.cst-check__option.is-dim{opacity:.55}.cst-check__why{margin-top:10px}.cst-player__nav{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;margin-top:28px;gap:12px}.cst-player__count{color:var(--muted,#5e6790);font-weight:600}.cst-player__gate{color:#b23a48;font-size:13px;font-weight:600;text-align:right;flex:1 1 auto}@media (max-width:560px){.cst-player__nav{gap:10px}.cst-player__nav .cst-btn{flex:1 1 auto;padding:12px 14px}.cst-player__count,.cst-player__gate{flex-basis:100%;text-align:center;order:5}}.cst-btn{font:inherit;cursor:pointer;padding:12px 22px;border-radius:10px;border:1.5px solid var(--line,#dfe4f2);background:var(--card,#fff);color:var(--cst-navy,#1c2560);font-weight:600}.cst-btn:disabled{opacity:.4;cursor:default}.cst-btn--primary{background:var(--cst-navy,#1c2560);color:#fff;border-color:var(--cst-navy,#1c2560)}.cst-btn:focus-visible{outline:3px solid var(--cst-orange,#ff8a00);outline-offset:2px}.cst-status{min-height:22px;font-weight:600}.cst-muted,.cst-status{color:var(--muted,#5e6790)}.cst-icon-btn{font:inherit;cursor:pointer;border:1px solid var(--line,#dfe4f2);background:#fff;border-radius:8px;width:30px;height:30px;color:var(--cst-navy,#1c2560)}.cst-icon-btn:disabled{opacity:.4;cursor:default}.cst-chip{font:inherit;font-size:14px;cursor:pointer;padding:7px 14px;border-radius:999px;border:1.5px solid var(--line,#dfe4f2);background:#fff;color:var(--cst-navy,#1c2560)}.cst-chip.is-active{background:var(--cst-navy,#1c2560);color:#fff;border-color:var(--cst-navy,#1c2560)}.cst-chip.is-found{border-color:var(--green,#1f8a5b)}.cst-chip:focus-visible,.cst-icon-btn:focus-visible{outline:3px solid var(--cst-orange,#ff8a00);outline-offset:2px}.cst-match__cols{display:grid;grid-template-columns:1fr 1fr;grid-gap:14px;gap:14px}.cst-match__col{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.cst-match__item{width:100%;text-align:left;font:inherit;cursor:pointer;padding:12px 14px;border-radius:10px;border:1.5px solid var(--line,#dfe4f2);background:var(--card,#fff);color:inherit}.cst-match__item.is-selected{border-color:var(--cst-orange,#ff8a00);box-shadow:0 0 0 2px #ff8a0033}.cst-match__item.is-matched{background:#eaf6f0;border-color:var(--green,#1f8a5b);color:var(--muted,#5e6790)}.cst-order__list{list-style:none;padding:0;margin:0 0 12px;display:flex;flex-direction:column;gap:8px}.cst-order__item{display:flex;align-items:center;gap:12px;padding:10px 12px;border:1.5px solid var(--line,#dfe4f2);border-radius:10px;background:var(--card,#fff)}.cst-order__num{width:26px;height:26px;border-radius:50%;background:var(--tint,#eef1fa);color:var(--cst-navy,#1c2560);font-weight:700;display:inline-flex;align-items:center;justify-content:center;flex:none}.cst-order__label{flex:1 1}.cst-order__ctrls{display:flex;gap:6px}.cst-order__foot{display:flex;align-items:center;gap:12px}.cst-hotspot__stage{position:relative;display:inline-block;max-width:100%}.cst-hotspot__fig{max-width:100%}.cst-hotspot__spot{position:absolute;transform:translate(-50%,-50%);width:30px;height:30px;border-radius:50%;border:2px solid #fff;background:var(--cst-orange,#ff8a00);color:#fff;font-weight:700;cursor:pointer;box-shadow:0 2px 6px rgba(0,0,0,.3)}.cst-hotspot__spot.is-found{background:var(--green,#1f8a5b)}.cst-hotspot__list{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}.cst-hotspot__info{padding:12px 14px;border-radius:10px;background:var(--tint,#eef1fa)}.cst-hotspot__info h4{margin:0 0 4px;color:var(--cst-navy,#1c2560)}.cst-lightning__bar{display:flex;justify-content:space-between;font-weight:700;color:var(--cst-navy,#1c2560);margin-bottom:10px}.cst-lightning__q{font-size:18px;font-weight:600}.cst-lightning__opts{display:flex;flex-wrap:wrap;gap:8px}.cst-lightning__review ul{padding-left:18px}.cst-lightning__text{display:flex;gap:8px}.cst-input{font:inherit;padding:10px 12px;border-radius:10px;border:1.5px solid var(--line,#dfe4f2);background:var(--card,#fff);color:inherit;flex:1 1}.cst-input:focus-visible{outline:3px solid var(--cst-orange,#ff8a00);outline-offset:2px}.cst-flip__face{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px}.cst-flip__img{max-width:100%;max-height:130px;border-radius:8px;object-fit:contain}.cst-flip__text{display:block}.cst-hotspot__img{display:block;max-width:100%;height:auto}.cst-sort__hint{font-size:12px;margin:0}[data-draggable=true]{touch-action:none;cursor:-webkit-grab;cursor:grab;-moz-user-select:none;user-select:none;-webkit-user-select:none}[data-dragging=true]{cursor:-webkit-grabbing;cursor:grabbing;opacity:.95;box-shadow:0 10px 28px rgba(28,37,96,.28)}.cst-sort__bucket.is-dragover{background:var(--tint,#eef1fa);border-style:dashed;outline:2px solid var(--cst-orange,#ff8a00)}.cst-match__item.is-dragover,.cst-order__item.is-dragover{border-color:var(--cst-orange,#ff8a00);box-shadow:0 0 0 2px #ff8a0033}.cst-label__target.is-dragover{box-shadow:0 0 0 3px var(--cst-orange,#ff8a00);transform:translate(-50%,-50%) scale(1.18)}.cst-calc__row{display:grid;grid-template-columns:1fr 2fr auto;align-items:center;grid-gap:10px;gap:10px;margin-bottom:10px}.cst-calc__row input[type=range]{width:100%}.cst-calc__val{font-feature-settings:"tnum";font-variant-numeric:tabular-nums;color:var(--muted,#5e6790);min-width:80px;text-align:right}.cst-calc__result{margin-top:12px;padding:14px;border-radius:10px;background:var(--tint,#eef1fa)}.cst-calc__result.is-pass{background:#eaf6f0}.cst-calc__result.is-fail{background:#fdeef0}.cst-calc__verdict{margin-top:6px;font-weight:700}.cst-anim__tabs{display:flex;gap:6px;margin-bottom:12px}.cst-anim__panel{padding:14px;border:1.5px solid var(--line,#dfe4f2);border-radius:12px;min-height:80px}.cst-anim__panel h4{margin:8px 0 4px;color:var(--cst-navy,#1c2560)}.cst-anim__ctrls{display:flex;gap:8px;margin-top:12px}.cst-bank__filter{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}.cst-bank__count,.cst-mock__bar{color:var(--muted,#5e6790);font-weight:600}.cst-mock__bar{display:flex;justify-content:space-between;margin-bottom:12px}.cst-mock__qs{list-style:decimal;padding-left:22px;gap:18px;margin-bottom:16px}.cst-mock__opts,.cst-mock__qs{display:flex;flex-direction:column}.cst-mock__opts{gap:6px}.cst-check__option.is-selected{border-color:var(--cst-navy,#1c2560);background:var(--tint,#eef1fa)}.cst-mock__result.is-pass{color:#0a5c38}.cst-mock__result.is-fail{color:#8a1020}.cst-mock__message{margin:4px 0 12px;color:var(--cst-navy,#1c2560);white-space:pre-wrap}.cst-accordion__item{border:1.5px solid var(--line,#dfe4f2);border-radius:10px;margin-bottom:8px;overflow:hidden}.cst-accordion__head{width:100%;display:flex;align-items:center;justify-content:space-between;gap:10px;font:inherit;font-weight:600;text-align:left;cursor:pointer;padding:12px 14px;background:var(--card,#fff);color:var(--cst-navy,#1c2560);border:none}.cst-accordion__head:hover{background:var(--tint,#eef1fa)}.cst-accordion__head:focus-visible{outline:3px solid var(--cst-orange,#ff8a00);outline-offset:-3px}.cst-accordion__chev{color:var(--muted,#5e6790);flex:none}.cst-accordion__body{padding:12px 14px;border-top:1px solid var(--line,#dfe4f2);color:var(--text,#222a4d);white-space:pre-wrap}.cst-tabs__list{display:flex;flex-wrap:wrap;gap:4px;border-bottom:2px solid var(--line,#dfe4f2);margin-bottom:0}.cst-tabs__tab{font:inherit;font-weight:600;cursor:pointer;padding:9px 16px;background:none;color:var(--muted,#5e6790);border:none;border-bottom:2px solid transparent;margin-bottom:-2px}.cst-tabs__tab.is-active{color:var(--cst-navy,#1c2560);border-bottom-color:var(--cst-orange,#ff8a00)}.cst-tabs__tab:focus-visible{outline:3px solid var(--cst-orange,#ff8a00);outline-offset:-3px}.cst-tabs__panel{padding:16px;border:1.5px solid var(--line,#dfe4f2);border-top:none;border-radius:0 0 12px 12px;min-height:80px;white-space:pre-wrap}.cst-media{display:block;max-width:100%;height:auto;border-radius:10px;margin:0 0 12px}.cst-anim__panel .cst-media{margin-top:4px}.cst-gallery{margin:14px 0}.cst-gallery--empty{padding:18px;border:1.5px dashed var(--line,#dfe4f2);border-radius:12px;color:var(--muted,#5e6790);text-align:center}.cst-gallery--grid2,.cst-gallery--grid3,.cst-gallery--grid4{display:grid;grid-gap:12px;gap:12px}.cst-gallery--grid2{grid-template-columns:repeat(2,1fr)}.cst-gallery--grid3{grid-template-columns:repeat(3,1fr)}.cst-gallery--grid4{grid-template-columns:repeat(4,1fr)}@media (max-width:640px){.cst-gallery--grid2,.cst-gallery--grid3,.cst-gallery--grid4{grid-template-columns:repeat(2,1fr)}}.cst-gallery__cell,.cst-gallery__slide{margin:0}.cst-gallery__cell img,.cst-gallery__slide img{width:100%;height:100%;max-height:420px;object-fit:cover;border-radius:10px;display:block}.cst-gallery__cell figcaption,.cst-gallery__slide figcaption{font-size:13px;color:var(--muted,#5e6790);margin-top:6px}.cst-gallery--carousel .cst-gallery__slide img{object-fit:contain;background:var(--tint,#eef1fa)}.cst-gallery__nav{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:10px}.cst-gallery__count{font-weight:600;color:var(--muted,#5e6790);min-width:56px;text-align:center}.cst-timeline{list-style:none;margin:16px 0;padding:0 0 0 8px;border-left:3px solid var(--line,#dfe4f2)}.cst-timeline__item{position:relative;padding:0 0 22px 22px}.cst-timeline__item:last-child{padding-bottom:0}.cst-timeline__item:before{content:"";position:absolute;left:-12px;top:4px;width:14px;height:14px;border-radius:50%;background:var(--cst-orange,#ff8a00);box-shadow:0 0 0 3px #fff}.cst-timeline__marker{display:none}.cst-timeline__title{margin:0 0 4px;color:var(--cst-navy,#1c2560)}.cst-timeline__date{color:var(--cst-orange,#d96f00);font-weight:700}.cst-timeline__body p{margin:0 0 8px}.cst-columns{display:grid;grid-gap:18px;gap:18px;margin:14px 0;align-items:start}.cst-columns__col>:first-child{margin-top:0}.cst-columns__col>:last-child{margin-bottom:0}.cst-columns .cst-media{margin-bottom:8px}@media (max-width:640px){.cst-columns{grid-template-columns:1fr!important}}.cst-download{display:inline-flex;align-items:center;gap:12px;padding:12px 18px;margin:12px 0;border:1.5px solid var(--line,#dfe4f2);border-radius:12px;background:var(--tint,#eef1fa);color:var(--cst-navy,#1c2560);text-decoration:none;transition:border-color .15s,background .15s}.cst-download:hover{border-color:var(--cst-orange,#ff8a00);background:#fff}.cst-download--empty{color:var(--muted,#5e6790);background:none;border-style:dashed}.cst-download__icon{font-size:22px;line-height:1}.cst-download__text{display:flex;flex-direction:column}.cst-download__label{font-weight:700}.cst-download__desc{font-size:13px;color:var(--muted,#5e6790)}.cst-scenario{margin:14px 0}.cst-scenario__stage{display:flex;gap:14px;align-items:flex-start}.cst-scenario__char{width:96px;height:96px;object-fit:cover;border-radius:50%;border:2px solid var(--line,#dfe4f2);flex:0 0 auto}.cst-scenario__bubble{flex:1 1;background:var(--tint,#eef1fa);border-radius:12px;padding:14px 16px;position:relative}.cst-scenario__speaker{margin:0 0 4px;font-weight:700;color:var(--cst-navy,#1c2560);font-size:14px}.cst-scenario__choices{list-style:none;margin:14px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}.cst-scenario__choice{display:block;width:100%;text-align:left;font:inherit;cursor:pointer;padding:11px 14px;border:1.5px solid var(--line,#dfe4f2);border-radius:10px;background:#fff;color:var(--cst-navy,#1c2560)}.cst-scenario__choice:focus-visible,.cst-scenario__choice:hover{border-color:var(--cst-orange,#ff8a00);outline:none}.cst-scenario__feedback{margin-top:14px;padding:14px 16px;border-radius:12px;border-left:4px solid var(--muted,#5e6790);background:#f6f7fb}.cst-scenario__feedback--good{border-left-color:#1f8a5b;background:#eaf6f0}.cst-scenario__feedback--bad{border-left-color:#b23a48;background:#fdeef0}.cst-scenario__feedback .cst-btn{margin-top:10px}.cst-scenario__end{margin-top:14px;display:flex;align-items:center;gap:14px}.cst-scenario__end-label{margin:0;font-weight:700;color:var(--cst-navy,#1c2560)}@media (max-width:560px){.cst-scenario__stage{flex-direction:column;align-items:center;text-align:center}}.cst-fillblank__body{line-height:2.2;font-size:16px}.cst-blank{display:inline-block;min-width:110px;padding:4px 8px;margin:0 2px;border:none;border-bottom:2px solid var(--cst-navy,#1c2560);background:var(--tint,#eef1fa);border-radius:6px 6px 0 0;font:inherit}.cst-blank:focus-visible{outline:3px solid var(--cst-orange,#ff8a00);outline-offset:2px}.cst-blank.is-correct{border-bottom-color:var(--green,#1f8a5b);background:#eaf6f0}.cst-blank.is-wrong{border-bottom-color:var(--red,#b23a48);background:#fdeef0}.cst-fillblank__foot{display:flex;align-items:center;gap:12px;margin-top:14px}.cst-fillblank__answers{margin-top:8px;color:var(--muted,#5e6790);font-size:14px}.cst-multiselect__stem{font-weight:600;margin:0 0 10px}.cst-multiselect__options{list-style:none;padding:0;margin:0 0 14px;display:flex;flex-direction:column;gap:8px}.cst-multiselect__opt{display:flex;align-items:center;gap:10px;padding:10px 14px;border:1.5px solid var(--line,#dfe4f2);border-radius:10px;cursor:pointer}.cst-multiselect__opt.is-correct{border-color:var(--green,#1f8a5b);background:#eaf6f0}.cst-multiselect__opt.is-wrong{border-color:var(--red,#b23a48);background:#fdeef0}.cst-multiselect__foot{display:flex;align-items:center;gap:12px}.cst-multiselect__why{margin-top:12px;padding:12px 14px;border-radius:10px;background:var(--tint,#eef1fa)}.cst-label__stage{position:relative;display:inline-block;max-width:100%}.cst-label__fig{max-width:100%}.cst-label__img{display:block;max-width:100%;height:auto}.cst-label__target{position:absolute;transform:translate(-50%,-50%);min-width:28px;height:28px;padding:0 8px;border-radius:999px;border:2px solid #fff;background:var(--cst-navy,#1c2560);color:#fff;font-weight:700;font-size:13px;display:inline-flex;align-items:center;justify-content:center;box-shadow:0 2px 6px rgba(0,0,0,.3)}.cst-label__target.is-correct{background:var(--green,#1f8a5b)}.cst-label__target.is-wrong{background:var(--red,#b23a48)}.cst-label__tray{list-style:none;padding:0;margin:14px 0 0;display:flex;flex-wrap:wrap;gap:8px}.cst-label__chip{display:flex;align-items:center;gap:6px;padding:6px 8px 6px 12px;border:1.5px solid var(--line,#dfe4f2);border-radius:999px;background:#fff}.cst-label__chip.is-correct{border-color:var(--green,#1f8a5b);background:#eaf6f0}.cst-label__chip.is-wrong{border-color:var(--red,#b23a48);background:#fdeef0}.cst-label__chip-text{display:inline-block;font-weight:600;cursor:-webkit-grab;cursor:grab}.cst-label__assign select{font:inherit;font-size:13px;padding:3px 6px;border-radius:8px;border:1px solid var(--line,#dfe4f2)}@media (max-width:640px){.cst-calc__row,.cst-match__cols{grid-template-columns:1fr}}.cst-mock__warning{min-height:20px;margin:8px 0 0;font-size:13px;font-weight:600;color:var(--muted,#5e6790)}.cst-mock__warning.is-urgent{color:#b23a48}.cst-mock__review{margin-top:18px;border-top:1px solid var(--line,#dfe4f2);padding-top:12px}.cst-mock__review summary{cursor:pointer;font-weight:700;color:var(--cst-navy,#1c2560);padding:6px 0}.cst-mock__review summary:focus-visible{outline:3px solid var(--cst-orange,#ff8a00);outline-offset:2px}.cst-mock__q--right{border-left:4px solid var(--green,#1f8a5b);padding-left:12px}.cst-mock__q--wrong{border-left:4px solid #b23a48;padding-left:12px}.cst-mock__verdict{margin-right:8px;font-weight:800}.cst-mock__q--right .cst-mock__verdict{color:var(--green,#1f8a5b)}.cst-mock__q--wrong .cst-mock__verdict{color:#b23a48}.cst-mock__answers{margin:6px 0 0;padding-left:18px;font-size:14px}.cst-mock__why{margin:8px 0 0;font-size:14px}.cst-finish{margin-top:24px;padding:28px 24px;text-align:center;border:1px solid var(--line,#dfe4f2);border-radius:16px;background:var(--tint,#eef1fa)}.cst-finish__mark{width:56px;height:56px;margin:0 auto 12px;border-radius:50%;background:var(--green,#1f8a5b);color:#fff;font-size:30px;line-height:56px;font-weight:700}.cst-finish__title{margin:0 0 6px;color:var(--cst-navy,#1c2560);font-size:22px}.cst-finish__sub{margin:0;color:var(--muted,#5e6790)}.cst-finish__score{margin:14px 0 0;color:var(--cst-navy,#1c2560);font-size:17px}.cst-finish__actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:20px}.cst-toc{margin-top:16px;border:1px solid var(--line,#dfe4f2);border-radius:14px;background:var(--card,#fff);overflow:hidden;box-shadow:0 12px 36px rgba(28,37,96,.14)}.cst-toc__bar{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 14px;background:var(--tint,#eef1fa);border-bottom:1px solid var(--line,#dfe4f2)}.cst-toc__bar strong{color:var(--cst-navy,#1c2560)}.cst-toc__note{margin:0;padding:10px 14px;font-size:13px;color:var(--muted,#5e6790);border-bottom:1px solid var(--line,#dfe4f2)}.cst-toc__modules,.cst-toc__screens,.cst-toc__sections{list-style:none;margin:0;padding:0}.cst-toc__sections{padding:8px;max-height:60vh;overflow-y:auto}.cst-toc__modules,.cst-toc__screens{padding-left:12px}.cst-toc__item{display:flex;align-items:baseline;gap:8px;width:100%;text-align:left;font:inherit;cursor:pointer;background:none;border:none;border-radius:8px;padding:8px 10px;color:var(--cst-navy,#1c2560)}.cst-toc__item:hover:not(:disabled){background:var(--tint,#eef1fa)}.cst-toc__item:disabled{opacity:.45;cursor:not-allowed}.cst-toc__item:focus-visible{outline:3px solid var(--cst-orange,#ff8a00);outline-offset:-2px}.cst-toc__item--section{font-weight:800}.cst-toc__item--module{font-weight:600}.cst-toc__item--screen{font-weight:400;color:var(--muted,#5e6790)}.cst-toc__item.is-seen .cst-toc__mark{color:var(--green,#1f8a5b)}.cst-toc__item.is-current{background:var(--cst-navy,#1c2560);color:#fff}.cst-toc__item.is-current .cst-toc__mark{color:var(--cst-orange,#ff8a00)}.cst-toc__mark{flex:none;width:1em}.cst-toc__label{flex:1 1 auto;min-width:0}.cst-trigger-source{cursor:pointer;border-radius:12px;transition:box-shadow .15s,transform .15s}.cst-trigger-source:hover{box-shadow:0 4px 16px rgba(28,37,96,.12);transform:translateY(-1px)}.cst-trigger-source:focus-visible{outline:3px solid var(--cst-orange);outline-offset:2px}.cst-layer{margin-top:16px;border:1px solid var(--line);border-radius:14px;background:var(--card);box-shadow:0 12px 36px rgba(28,37,96,.14);overflow:hidden}.cst-layer__bar{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 14px;background:var(--tint);border-bottom:1px solid var(--line)}.cst-layer__bar strong{color:var(--cst-navy)}.cst-layer__blocks{padding:14px 16px;display:flex;flex-direction:column;gap:12px}@media (pointer:coarse){.cst-hotspot__spot,.cst-icon-btn,.cst-label__target{width:44px;height:44px}}@media (prefers-reduced-motion:reduce){.cst-player *,.cst-player :after,.cst-player :before{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}}.cst-rm *,.cst-rm :after,.cst-rm :before{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}