/* SKO-01: one continuous instructor document. All selectors are scoped to the training surface. */
.sko-catalog{margin:38px 0 46px}.sko-catalog-head{margin-bottom:18px}.sko-eyebrow{color:#bca8ff;text-transform:uppercase;letter-spacing:.17em;font-size:12px;font-weight:800}.sko-catalog-head h2{font-size:clamp(25px,2.3vw,34px);margin:7px 0}.sko-catalog-head p:last-child{color:#aeb8d1;margin:0}.sko-catalog-list{border-top:1px solid #363950}.sko-catalog-item{width:100%;display:grid;grid-template-columns:85px minmax(0,1fr) 120px;gap:16px;align-items:center;padding:17px 10px;border:0;border-bottom:1px solid #30344a;background:transparent;text-align:left;color:#e8eafd;font-size:16px}.sko-catalog-item:is(button):hover,.sko-catalog-item:is(button):focus-visible{background:#211d36;outline:2px solid #9372ff;outline-offset:-2px}.sko-catalog-id{color:#ad91ff;font-weight:800}.sko-catalog-tail{text-align:right;color:#a99adc;font-size:13px}.sko-coming{color:#8790a8}.sko-coming .sko-catalog-id,.sko-coming .sko-catalog-tail{color:#6e7892}
.sko-document{--sko-violet:#9a78ff;--sko-ink:#d7ddf1;width:100%;min-width:0;max-width:100%;margin:10px auto 64px;color:var(--sko-ink);border:1px solid #3b3c58;border-radius:22px;background:linear-gradient(180deg,#141824,#111521);box-shadow:0 26px 70px #0005;overflow:hidden}.sko-document :is(button,a):focus-visible{outline:3px solid #c3acff;outline-offset:3px}.sko-topbar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px clamp(22px,3vw,48px);border-bottom:1px solid #30354d}.sko-text-button{border:0;background:transparent;color:#baa5ff;text-align:left;font:inherit;font-size:14px;padding:9px 8px;cursor:pointer}.sko-text-button:hover{color:#e1d7ff}.sko-tv-button{border:1px solid #67568f;border-radius:9px;padding:9px 15px;font-weight:750;text-transform:uppercase;letter-spacing:.07em}
.sko-hero{position:relative;min-height:clamp(295px,27vw,420px);display:flex;align-items:center;background:#111527;isolation:isolate}.sko-hero::after{content:"";position:absolute;z-index:-1;inset:0;background:linear-gradient(90deg,#0c1021 0%,#0c1021ee 30%,#0c102190 63%,#0c102130 100%)}.sko-hero>img{position:absolute;z-index:-2;width:100%;height:100%;object-fit:cover;object-position:center}.sko-hero-copy{max-width:690px;padding:clamp(30px,5vw,68px);text-shadow:0 2px 14px #000b}.sko-hero-copy h1{font-size:clamp(32px,3.3vw,56px);line-height:1.07;letter-spacing:-.035em;color:#f4f3ff;margin:16px 0}.sko-hero-copy>p:not(.sko-eyebrow){font-size:clamp(16px,1.35vw,20px);line-height:1.55;margin:0;max-width:570px}.sko-hero-meta{display:flex;gap:9px;flex-wrap:wrap;margin-top:23px}.sko-hero-meta span{border:1px solid #6e648e;border-radius:100px;padding:6px 13px;background:#181527a8;font-size:12px;color:#d7cbff}
.sko-paper{padding:clamp(24px,4vw,62px)}.sko-section{max-width:100%;margin:0 0 40px}.sko-section h2{font-size:clamp(25px,2.15vw,34px);line-height:1.2;margin:0 0 19px;color:#f2efff;letter-spacing:-.025em}.sko-section p{font-size:clamp(16px,1.2vw,19px);line-height:1.68;margin:0 0 14px}.sko-section strong{color:#f7f3ff}.sko-important{border-left:3px solid #a489fd;padding:9px 0 9px 18px;color:#c6cae0;margin-top:23px!important}.sko-algorithm>p:first-of-type{max-width:780px}.sko-algorithm-controls{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:22px 0 10px}.sko-algorithm-controls button,.sko-quiz-bottom button{border:1px solid #6f628f;border-radius:9px;background:#28243c;color:#eee9ff;font:inherit;font-size:13px;font-weight:700;min-height:40px;padding:8px 13px;cursor:pointer}.sko-algorithm-controls button:hover,.sko-quiz-bottom button:hover{background:#3a3054;border-color:#a58af4}.sko-algorithm-controls button:disabled{opacity:.48;cursor:default}.sko-algorithm-controls output{min-width:42px;text-align:center;font-size:12px;color:#aab3ce}.sko-tree-status{font-size:13px!important;color:#9daac8;margin-bottom:11px!important}.sko-tree-scroll{max-width:100%;max-height:min(72vh,870px);overflow:auto;overscroll-behavior:contain;scrollbar-color:#625595 #151929;border:1px solid #393754;border-radius:14px;background:radial-gradient(ellipse at 50% 0,#28213e 0,#121624 39%,#0b0e18 100%)}.sko-tree-stage{position:relative}.sko-tree{width:1100px;height:1655px;transform-origin:0 0;position:relative}.sko-tree::before{content:"";position:absolute;inset:0;background:linear-gradient(#9175ef0b 1px,transparent 1px),linear-gradient(90deg,#9175ef0b 1px,transparent 1px);background-size:70px 70px;pointer-events:none}.sko-tree-lines{position:absolute;inset:0;width:1100px;height:1655px;overflow:visible;pointer-events:none}.sko-connector{fill:none;stroke:#8276a4;stroke-width:3.2;stroke-linecap:round;vector-effect:non-scaling-stroke}.sko-connector.active{stroke:#b696ff;stroke-width:4;filter:drop-shadow(0 0 6px #a684ff)}.sko-connector[hidden]{display:none}.sko-node{position:absolute;width:138px;height:212px;padding:0;border:0;background:transparent;cursor:zoom-in;border-radius:12px;box-shadow:0 12px 25px #0009;animation:skoAppear .35s ease both}.sko-node img{width:100%;height:100%;object-fit:contain;display:block;border-radius:12px}.sko-node.result{width:138px}.sko-node.newly-opened{animation:skoAppear .5s cubic-bezier(.16,.75,.3,1.06) both}.sko-node:hover{filter:brightness(1.17)}.sko-branch{position:absolute;z-index:2;transform:translate(-50%,-50%);min-width:83px;min-height:48px;border:1px solid #9d80e9;border-radius:100px;background:#18142d;color:#f6f2ff;font-size:17px;font-weight:850;letter-spacing:.08em;box-shadow:0 3px 14px #000d,0 0 14px #8061df70;cursor:pointer;padding:7px 12px}.sko-branch:hover,.sko-branch.selected{background:#674ca5;border-color:#c9b0ff}.sko-branch-yes{border-color:#5dd6aa;color:#9bf3c9}.sko-branch-yes.selected{background:#246a55;border-color:#93f6cb;color:white}.sko-branch-no{border-color:#f08ca2;color:#ffc2cc}.sko-branch-no.selected{background:#853f61;border-color:#ffc0ce;color:white}.sko-branch-next{min-width:149px;color:#d4c5ff}.sko-branch-next.selected{background:#674ca5;color:white}.sko-teaching-note{margin-top:12px!important;font-size:14px!important;color:#b7bfd4;line-height:1.55!important}@keyframes skoAppear{from{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}
.sko-quiz{margin-top:52px}.sko-quiz hr{height:2px;border:0;background:linear-gradient(90deg,#8467e4,transparent);margin:0 0 28px}.sko-questions{margin-top:26px}.sko-question{padding:18px 0;border-bottom:1px solid #32374e}.sko-question h3{font-size:clamp(17px,1.3vw,21px);font-weight:700;line-height:1.42;color:#f1effe;margin:0 0 12px}.sko-question h3 span{color:#a78aff;margin-right:7px}.sko-answers{display:flex;flex-wrap:wrap;gap:9px}.sko-answers button{border:1px solid #505676;border-radius:9px;background:#202637;color:#d7ddf1;font-size:15px;text-align:left;line-height:1.35;padding:11px 13px;min-height:48px;cursor:pointer}.sko-answers button:hover:not(:disabled){border-color:#ab90fa;background:#322b4b}.sko-answers button strong{color:#b8a0ff}.sko-answers button.correct{background:#194237;border-color:#63d6a9;color:#d5ffee}.sko-answers button.incorrect{background:#4a2538;border-color:#ee8ca5;color:#ffe1e6}.sko-answers button:disabled{opacity:.78;cursor:default}.sko-answers button.correct:disabled{opacity:1}.sko-feedback{margin:10px 0 0!important;font-size:14px!important;color:#bfdecf;min-height:1.4em}.sko-quiz-bottom{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-top:18px;color:#b5bdd2}.sko-footer{padding-top:15px;border-top:1px solid #36384f;color:#a7b0c8;font-size:12px;line-height:1.7}.sko-footer strong{color:#d7cc9f}
.sidebar,.topbar,.bottom-mobile{transition:filter .2s ease}body.sko-tv-active :is(.sidebar,.topbar,.bottom-mobile){filter:brightness(.25)}
@media(max-width:1050px){.sko-document{width:100%;min-width:0}.sko-paper{padding:30px}.sko-tree-scroll{max-height:640px}}@media(max-width:650px){.sko-document{width:100%;border-radius:14px;margin:0 auto 90px}.sko-topbar{padding:10px 17px}.sko-hero{min-height:380px;align-items:end}.sko-hero::after{background:linear-gradient(0deg,#0c1021 0%,#0c1021dd 42%,#0c102166 100%)}.sko-hero-copy{padding:25px}.sko-hero-copy h1{font-size:35px}.sko-hero-copy>p:not(.sko-eyebrow){font-size:16px}.sko-paper{padding:26px 21px}.sko-section{margin-bottom:34px}.sko-section h2{font-size:26px}.sko-section p{font-size:16px;line-height:1.58}.sko-tree-scroll{max-height:520px}.sko-algorithm-controls button{font-size:12px;padding:8px 10px}.sko-answers{display:grid}.sko-answers button{width:100%}.sko-catalog-item{grid-template-columns:70px minmax(0,1fr);font-size:14px}.sko-catalog-tail{grid-column:2;text-align:left;margin-top:-10px}.sko-footer{font-size:12px}}
@media(prefers-reduced-motion:reduce){.sko-node{animation:none!important}.sko-connector{transition:none!important}}
.sko-node{animation:none}
.sko-node.newly-opened{animation:skoAppear .5s cubic-bezier(.16,.75,.3,1.06) both}
.sko-branch:disabled{cursor:default}

/* Preserve physical touch targets while the diagram is zoomed. Full view stays compact. */
.sko-branch{min-width:calc(64px * var(--sko-control-scale,1));min-height:calc(44px * var(--sko-control-scale,1));font-size:calc(14px * var(--sko-control-scale,1));padding:calc(6px * var(--sko-control-scale,1)) calc(8px * var(--sko-control-scale,1))}
.sko-branch-next{min-width:calc(130px * var(--sko-control-scale,1))}

/* SKO-02: the same continuous document surface as START. */
.sko-bls .sko-hero{min-height:clamp(330px,28vw,450px)}
.sko-bls .sko-hero>img{object-position:center}
.sko-bls .sko-hero-copy{max-width:745px}
.sko-bls .sko-hero-copy h1{max-width:650px;margin:13px 0 5px}
.sko-bls .sko-hero-copy .sko-bls-subtitle{font-size:clamp(22px,2.3vw,32px);font-weight:800;line-height:1.2;color:#b999ff;margin:0 0 18px}
.sko-bls .sko-hero-copy .sko-bls-motto{font-size:clamp(17px,1.5vw,23px);font-weight:700;color:#f6f2ff;margin:0 0 10px}
.sko-bls-section-number{font-size:.57em;vertical-align:middle;letter-spacing:.1em;color:#a789fa;margin-right:9px}
.sko-bls-metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;margin:30px 0 4px;border-top:1px solid #49405d;border-bottom:1px solid #49405d}
.sko-bls-metric{display:flex;align-items:center;gap:9px;min-width:0;padding:18px 10px;border-right:1px solid #49405d}
.sko-bls-metric:nth-child(2),.sko-bls-metric:last-child{border-right:0}
.sko-bls-metric:nth-child(-n+2){border-bottom:1px solid #49405d}
.sko-bls-metric-icon{width:29px;flex:0 0 29px;font-size:26px;font-weight:700;color:#ab8dff;text-align:center}
.sko-bls-metric strong{display:block;font-size:clamp(20px,1.75vw,27px);line-height:1.15;white-space:nowrap;color:#f5f1ff}
.sko-bls-metric span:last-child{display:block;margin-top:6px;color:#aab5cc;font-size:12px;line-height:1.35}
.sko-bls-recognition{list-style:none;margin:23px 0 0;padding:0}
.sko-bls-recognition li{display:grid;grid-template-columns:54px minmax(0,1fr);gap:13px;align-items:start;padding:17px 0;border-top:1px solid #343a52}
.sko-bls-recognition-icon{display:flex;align-items:center;justify-content:center;width:43px;height:43px;border:1px solid #8468c4;border-radius:12px;color:#d6c6ff;background:#302541;font-size:15px;font-weight:800}
.sko-bls-recognition h3,.sko-bls-step h3,.sko-bls-practice h3{font-size:clamp(19px,1.45vw,24px);line-height:1.3;color:#f3efff;margin:0 0 7px}
.sko-bls-recognition p{margin:0}
.sko-bls-steps{list-style:none;margin:27px 0 0;padding:0;position:relative}
.sko-bls-steps::before{content:"";position:absolute;top:25px;bottom:35px;left:24px;border-left:2px solid #69539f}
.sko-bls-step{display:grid;grid-template-columns:50px minmax(0,1fr);gap:23px;position:relative;margin:0 0 31px}
.sko-bls-step-number{display:flex;align-items:center;justify-content:center;z-index:1;width:50px;height:50px;border:2px solid #a88aff;border-radius:50%;color:#e9ddff;font-weight:850;background:#221b39;box-shadow:0 0 18px #7553ba55}
.sko-bls-step-content{min-width:0;padding-top:8px}
.sko-bls-step-content>p{margin-bottom:13px}
.sko-bls-facts{margin:4px 0 19px;padding-left:22px;font-size:clamp(16px,1.2vw,19px);line-height:1.55;color:#d7ddf1}
.sko-bls-facts li{margin-bottom:5px;padding-left:3px}
.sko-bls-facts li::marker{color:#aa8afd}
.sko-bls-figure{margin:23px 0 26px;max-width:100%}
.sko-bls-figure button{display:block;width:100%;padding:0;border:1px solid #51476b;border-radius:15px;overflow:hidden;background:#05040a;cursor:zoom-in}
.sko-bls-figure button:hover{border-color:#b498ff;filter:brightness(1.1)}
.sko-bls-figure img{display:block;width:100%;max-height:390px;object-fit:contain;object-position:center}
.sko-bls-figure figcaption{font-size:13px;color:#a9b1c7;line-height:1.48;margin-top:8px}
.sko-bls-practice{border-top:1px solid #404058;margin-top:24px;padding-top:17px}
.sko-bls-practice h3{margin:7px 0 12px;font-size:20px}
.sko-bls-practice ul{list-style:none;margin:0 0 21px;padding:0}
.sko-bls-practice li{display:flex;gap:11px;align-items:baseline;padding:6px 0;border-bottom:1px solid #30354a;font-size:clamp(15px,1.14vw,18px);line-height:1.4}
.sko-bls-practice li>span{color:#83d7ac;font-size:20px;font-weight:800;min-width:17px}
.sko-bls-practice .sko-bls-errors li>span{color:#f09aac}
@media(min-width:1800px){.sko-bls-metrics{grid-template-columns:repeat(4,minmax(0,1fr))}.sko-bls-metric:nth-child(-n+2){border-bottom:0}.sko-bls-metric:nth-child(2){border-right:1px solid #49405d}}
@media(max-width:650px){.sko-bls .sko-hero{min-height:450px}.sko-bls .sko-hero>img{object-position:65% center}.sko-bls .sko-hero-copy h1{font-size:33px}.sko-bls .sko-hero-copy .sko-bls-subtitle{font-size:24px}.sko-bls .sko-hero-copy .sko-bls-motto{font-size:17px}.sko-bls-metric{padding:13px 7px;gap:5px}.sko-bls-metric-icon{width:22px;flex-basis:22px;font-size:22px}.sko-bls-metric strong{font-size:19px}.sko-bls-metric span:last-child{font-size:11px}.sko-bls-step{grid-template-columns:39px minmax(0,1fr);gap:13px}.sko-bls-step-number{width:39px;height:39px;font-size:12px}.sko-bls-steps::before{left:18px}.sko-bls-figure img{max-height:300px}}