:root{--v13-bg:#f7f8fb;--v13-card:#fff;--v13-text:#151722;--v13-muted:#667085;--v13-line:#e4e7ec;--v13-accent:#625bf6;--v13-soft:#f1f0ff;--v13-good:#e9f8ef;--v13-warn:#fff6e6;--v13-bad:#fff0ef}
*{box-sizing:border-box}body{background:var(--v13-bg);color:var(--v13-text)}.hidden{display:none!important}
.v13-hero{padding:68px 0 36px}.v13-hero h1,.v13-program-head h1,.v13-course-head h1{font-size:clamp(40px,6vw,74px);line-height:1.02;letter-spacing:-.05em;margin:10px 0 16px}.v13-hero p,.v13-program-head p,.v13-course-head p{max-width:850px;color:var(--v13-muted);font-size:17px;line-height:1.65}.v13-status{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.v13-badge{display:inline-flex;padding:7px 10px;border-radius:999px;background:var(--v13-soft);color:#4942bd;font-size:10px;font-weight:900;letter-spacing:.07em;text-transform:uppercase}.v13-badge.review{background:var(--v13-warn);color:#856000}
.v13-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:28px 0}.v13-metric{background:#fff;border:1px solid var(--v13-line);border-radius:18px;padding:18px}.v13-metric strong{display:block;font-size:28px}.v13-metric span{font-size:12px;color:var(--v13-muted)}
.v13-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.v13-card{background:#fff;border:1px solid var(--v13-line);border-radius:22px;padding:22px;display:flex;flex-direction:column;min-height:215px}.v13-card h3{font-size:22px;line-height:1.16;margin:10px 0}.v13-card p{color:var(--v13-muted);line-height:1.55;flex:1}.v13-toolbar{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0}.v13-toolbar input,.v13-toolbar select{border:1px solid var(--v13-line);background:#fff;border-radius:12px;padding:12px 14px;min-height:44px}.v13-toolbar input{flex:1;min-width:260px}
.v13-feature-card{display:none;background:#fff;border:1px solid var(--v13-line);border-radius:28px;padding:32px;min-height:240px}.v13-feature-card.active{display:block}.v13-feature-card h3{font-size:34px;margin:14px 0}.v13-dots{display:flex;gap:7px;margin-top:12px}.v13-dots button{width:9px;height:9px;padding:0;border-radius:50%;border:0;background:#c8cbd8}.v13-dots button.active{background:var(--v13-accent)}
.v13-program-head,.v13-course-head{padding:56px 0 26px}.v13-path{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.v13-level{background:#fff;border:1px solid var(--v13-line);border-radius:22px;padding:24px}.v13-level h2{font-size:27px}.v13-level ul{padding-left:18px;color:var(--v13-muted);line-height:1.65}
.v13-course-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:26px;padding-bottom:70px}.v13-modules{display:grid;gap:16px}.v13-module{background:#fff;border:1px solid var(--v13-line);border-radius:22px;padding:22px}.v13-module h2{margin:7px 0 15px}.v13-lessons{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.v13-lesson-link{display:block;border:1px solid var(--v13-line);border-radius:14px;padding:13px;text-decoration:none}.v13-lesson-link strong{display:block;line-height:1.25}.v13-lesson-link span{font-size:11px;color:var(--v13-muted)}.v13-side{position:sticky;top:90px;align-self:start;background:#fff;border:1px solid var(--v13-line);border-radius:20px;padding:18px}.v13-side a{display:block;margin:8px 0}
.v13-lesson{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:26px;padding-bottom:80px}.v13-article{background:#fff;border:1px solid var(--v13-line);border-radius:26px;padding:36px}.v13-article h2{font-size:29px;margin:36px 0 10px}.v13-article p,.v13-article li{color:#444b5b;line-height:1.72}.v13-term,.v13-note,.v13-practice,.v13-warning{border-radius:15px;padding:17px;margin:18px 0}.v13-term{background:var(--v13-soft)}.v13-note{background:#eef7ff}.v13-practice{background:#f8f9fb;border:1px solid var(--v13-line)}.v13-warning{background:var(--v13-warn)}.v13-term code{white-space:normal;font-size:15px}.v13-toc{position:sticky;top:90px;align-self:start;background:#fff;border:1px solid var(--v13-line);border-radius:20px;padding:18px}.v13-toc a{display:block;padding:5px 0;font-size:12px;color:var(--v13-muted)}
.v13-sim,.v13-assessment-item,.v13-lab-step{background:#fff;border:1px solid var(--v13-line);border-radius:18px;padding:20px;margin:12px 0}.v13-sim textarea,.v13-assessment-item textarea,.v13-lab-step textarea{width:100%;border:1px solid var(--v13-line);border-radius:12px;padding:12px}.v13-choice label{display:block;border:1px solid var(--v13-line);border-radius:11px;padding:10px 12px;margin:7px 0}.v13-feedback{padding:14px;border-radius:12px;margin-top:12px}.v13-feedback.good{background:var(--v13-good)}.v13-feedback.bad{background:var(--v13-bad)}.v13-rubric{background:#f8f9fb;border-radius:12px;padding:14px}.v13-rubric ul{margin:0;padding-left:20px}
.v13-small{font-size:11px;color:var(--v13-muted)}.v13-empty{text-align:center;padding:40px;color:var(--v13-muted)}
@media(max-width:980px){.v13-grid{grid-template-columns:repeat(2,1fr)}.v13-path{grid-template-columns:1fr}.v13-course-layout,.v13-lesson{grid-template-columns:1fr}.v13-side,.v13-toc{position:static}.v13-lessons{grid-template-columns:1fr}}
@media(max-width:620px){.v13-grid{grid-template-columns:1fr}.v13-metrics{grid-template-columns:repeat(2,1fr)}.v13-article{padding:22px}.v13-hero{padding-top:42px}}