:root{--v15-ink:#131722;--v15-muted:#667085;--v15-line:#e3e6ed;--v15-soft:#f7f8fb;--v15-good:#eaf8ef;--v15-warn:#fff5dd;--v15-draft:#f1f2f5;--v15-accent:#5147d9}
.status-pill{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;font-size:11px;font-weight:800;letter-spacing:.05em;text-transform:uppercase;background:var(--v15-good);color:#196b3c}.status-pill.review{background:var(--v15-warn);color:#7b5a00}.status-pill.draft{background:var(--v15-draft);color:#596071}.quality-gate{border-left:4px solid var(--v15-accent);background:#f4f3ff;border-radius:0 14px 14px 0;padding:18px 20px;margin:20px 0}.roadmap-card{opacity:.88}.roadmap-card .btn{pointer-events:none;opacity:.65}.course-counts{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0}.course-counts span{font-size:12px;border:1px solid var(--v15-line);padding:7px 9px;border-radius:999px;background:#fff}.gold-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.gold-card{background:#fff;border:1px solid var(--v15-line);border-radius:24px;padding:24px}.gold-card h3{font-size:26px;margin:12px 0}.roadmap-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.roadmap-item{background:#fff;border:1px solid var(--v15-line);border-radius:16px;padding:16px}.roadmap-item h3{font-size:17px;margin:7px 0}.localization-gate{max-width:800px;margin:70px auto;background:#fff;border:1px solid var(--v15-line);border-radius:24px;padding:32px}.localization-gate .actions{display:flex;gap:10px;flex-wrap:wrap}.v15-course-shell{max-width:1100px;margin:0 auto;padding:52px 24px}.v15-course-head{max-width:820px}.v15-course-head h1{font-size:clamp(40px,5vw,66px);line-height:1.03;letter-spacing:-.045em;margin:12px 0 18px}.v15-meta{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0}.v15-meta span{background:#fff;border:1px solid var(--v15-line);border-radius:999px;padding:8px 12px;font-size:12px}.v15-course-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:28px;margin-top:34px}.v15-outline{display:grid;gap:18px}.v15-module{background:#fff;border:1px solid var(--v15-line);border-radius:22px;padding:22px}.v15-module h2{margin:6px 0 12px}.v15-section-list{display:grid;gap:8px;margin-top:12px}.v15-section-link{display:grid;grid-template-columns:auto 1fr auto;gap:10px;align-items:center;border:1px solid var(--v15-line);border-radius:12px;padding:12px 14px;text-decoration:none}.v15-section-link:hover{border-color:#b9b5f2}.v15-num{font-weight:800;color:var(--v15-accent)}.v15-time{font-size:11px;color:var(--v15-muted)}.v15-sidebar{position:sticky;top:90px;align-self:start}.v15-side-card{background:#fff;border:1px solid var(--v15-line);border-radius:18px;padding:18px;margin-bottom:14px}.v15-side-card a{word-break:break-word}.v15-reader{display:grid;grid-template-columns:240px minmax(0,760px) 220px;gap:26px;max-width:1280px;margin:0 auto;padding:34px 22px 80px}.v15-reader-nav,.v15-reader-tools{position:sticky;top:88px;align-self:start}.v15-reader-nav{max-height:calc(100vh - 110px);overflow:auto;background:#fff;border:1px solid var(--v15-line);border-radius:18px;padding:14px}.v15-reader-nav a{display:block;padding:7px 8px;border-radius:8px;text-decoration:none;font-size:12px}.v15-reader-nav a.current{background:#f0efff;font-weight:800}.v15-article{background:#fff;border:1px solid var(--v15-line);border-radius:26px;padding:38px}.v15-article h1{font-size:clamp(34px,4vw,52px);line-height:1.07;letter-spacing:-.035em}.v15-article h2{font-size:28px;margin:36px 0 12px}.v15-article p,.v15-article li{font-size:17px;line-height:1.75;color:#3e4655}.v15-artifact{background:#111722;color:#f5f7fb;border-radius:16px;padding:18px;overflow:auto;white-space:pre-wrap;line-height:1.55;font-size:14px}.v15-misconception{background:#fff6e6;border-left:4px solid #d69b18;border-radius:0 12px 12px 0;padding:16px 18px}.v15-activity{background:#f7f8fb;border:1px solid var(--v15-line);border-radius:18px;padding:20px}.v15-activity textarea,.v15-answer-input{width:100%;min-height:110px;border:1px solid #cfd3dd;border-radius:12px;padding:12px;font:inherit}.v15-check{margin-top:12px}.v15-feedback{margin-top:12px;padding:14px;border-radius:12px}.v15-feedback.ok{background:#eaf8ef}.v15-feedback.bad{background:#fff0ef}.v15-key{background:#f2f6ff;border-radius:14px;padding:16px 18px}.v15-prevnext{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:34px}.v15-prevnext a{border:1px solid var(--v15-line);border-radius:14px;padding:14px;text-decoration:none}.quiz-item{background:#fff;border:1px solid var(--v15-line);border-radius:18px;padding:20px;margin:14px 0}.quiz-item label{display:block;border:1px solid var(--v15-line);border-radius:10px;padding:9px 10px;margin:7px 0}.reference-list li{margin:7px 0}.editorial-note{font-size:12px;color:var(--v15-muted)}.language-status{display:inline-flex;gap:7px;flex-wrap:wrap}.language-status span{padding:5px 8px;border-radius:999px;background:#f1f2f5;font-size:10px}.language-status .published{background:#eaf8ef;color:#196b3c}.hidden-roadmap{display:none}
@media(max-width:1050px){.v15-reader{grid-template-columns:1fr}.v15-reader-nav,.v15-reader-tools,.v15-sidebar{position:static}.v15-reader-nav{max-height:none}.v15-course-grid{grid-template-columns:1fr}.roadmap-list{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){.gold-grid,.roadmap-list{grid-template-columns:1fr}.v15-article{padding:22px}.v15-reader{padding:20px 12px 60px}.v15-section-link{grid-template-columns:auto 1fr}.v15-time{grid-column:2}.v15-prevnext{grid-template-columns:1fr}}

/* V15.1 pedagogy layer */
.v151-gold{font-size:12px!important;font-weight:850!important;letter-spacing:.05em;text-transform:uppercase;color:#5147d9!important;margin-bottom:4px}.v151-novice{border:1px solid #d9d6ff;background:#f6f5ff;border-radius:14px;padding:13px 16px;margin:18px 0 30px;color:#373089}.v151-start{border-left:5px solid #5147d9;padding-left:22px}.v151-metaphor{background:#eef7ff;border:1px solid #cfe7ff;border-radius:18px;padding:20px}.v151-map-grid{display:grid;grid-template-columns:1fr 1.15fr 1fr;gap:12px;align-items:stretch}.v151-map-grid>div{border:1px solid var(--v15-line);border-radius:16px;padding:16px;background:#fafbfc}.v151-map-grid>div.current{background:#f0efff;border-color:#b9b5f2;display:flex;flex-direction:column;justify-content:center}.v151-map-grid span{display:block;font-size:10px;font-weight:850;letter-spacing:.06em;text-transform:uppercase;color:var(--v15-muted);margin-bottom:8px}.v151-map-grid ul{padding-left:18px;margin:0}.v151-map-grid li{font-size:13px!important;line-height:1.45!important}.v151-steps{list-style:none;padding:0;display:grid;gap:12px;counter-reset:step}.v151-steps li{display:grid;grid-template-columns:42px 1fr;gap:14px;align-items:start;background:#fafafa;border:1px solid var(--v15-line);border-radius:16px;padding:15px}.v151-steps li>span{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:#171a25;color:white;font-weight:850}.v151-steps li p{margin:1px 0!important}.v151-predict{background:#fff8df;border:1px solid #ead38b;border-radius:18px;padding:22px;margin-top:28px}.v151-predict h2{margin-top:0}.v151-predict summary{cursor:pointer;font-weight:800;color:#665000}.v151-independent{background:#f5f7fa;border-left:4px solid #5d6675;border-radius:0 14px 14px 0;padding:18px}.v151-teach{background:#f4fbf7;border:1px solid #cdebd8;border-radius:18px;padding:20px}.v151-teach textarea{width:100%;min-height:120px;border:1px solid #bdd5c5;border-radius:12px;padding:12px;font:inherit;margin-top:12px}.v151-transfer{background:#f7f2ff;border:1px solid #ded0f4;border-radius:18px;padding:20px}.v151-checklist{list-style:none;padding:0}.v151-checklist li{position:relative;padding:10px 10px 10px 38px;border-bottom:1px solid var(--v15-line)}.v151-checklist li:before{content:'✓';position:absolute;left:8px;top:9px;width:22px;height:22px;display:grid;place-items:center;border-radius:50%;background:#eaf8ef;color:#196b3c;font-weight:900}.v151-mini-map{white-space:pre-wrap;font-size:10px;line-height:1.35;background:#fafafa;border:1px solid var(--v15-line);padding:10px;border-radius:10px;max-height:360px;overflow:auto}.v151-course-promise{max-width:1100px;margin:32px auto 0;background:#fff;border:1px solid #d9d6ff;border-radius:24px;padding:26px}.v151-course-promise h2{font-size:28px;margin:6px 0 10px}.v151-course-map{white-space:pre-wrap;background:#111722;color:#f4f6fb;border-radius:16px;padding:18px;line-height:1.55;overflow:auto;margin-top:18px}.v151-reader .v15-article section{scroll-margin-top:100px}
@media(max-width:700px){.v151-map-grid{grid-template-columns:1fr}.v151-steps li{grid-template-columns:34px 1fr}.v151-steps li>span{width:30px;height:30px}.v151-course-promise{margin:22px 12px 0;padding:20px}}

.v151-article code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:#f1f3f6;border:1px solid #e0e3e8;border-radius:6px;padding:1px 5px;font-size:.9em;color:#242936}

.v151-foundations{background:#fbfcff;border:1px solid #dce3ef;border-radius:20px;padding:22px}.v151-foundation-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:14px}.v151-foundation-item{border:1px solid #e1e5ec;border-radius:14px;padding:15px;background:#fff}.v151-foundation-item strong{display:block;font-size:15px;margin-bottom:6px}.v151-foundation-item p{font-size:14px!important;line-height:1.55!important;margin:0!important}.v151-brain-map{white-space:pre-wrap;background:#111722;color:#f4f6fb;border-radius:18px;padding:20px;line-height:1.5;overflow:auto;margin:12px 0 18px;font-size:13px}@media(max-width:700px){.v151-foundation-grid{grid-template-columns:1fr}.v151-brain-map{font-size:11px}}