/* Курс для команды — стиль. Палитра курса: фиолетовый #6B46C1, Inter */
:root {
  --ink: #1c1917;
  --ink-soft: #57534e;
  --ink-faint: #a8a29e;
  --paper: #fafaf9;
  --card: #ffffff;
  --line: #e7e5e4;
  --brand: #6b46c1;
  --brand-deep: #553c9a;
  --brand-soft: #f3effc;
  --ok: #16a34a;
  --ok-soft: #f0fdf4;
  --warn-bg: #fffbeb;
  --warn-line: #fcd34d;
  --dark: #211a33;
  --sidebar-w: 300px;
  --topbar-h: 60px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, -apple-system, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-size: 16px;
  line-height: 1.65;
}

/* ---------- Шапка ---------- */
.topbar {
  position: fixed; inset: 0 0 auto 0; height: var(--topbar-h);
  display: flex; align-items: center; gap: 16px;
  padding: 0 20px;
  background: rgba(255,255,255,.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  z-index: 50;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand-mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--brand), #9f7aea);
  color: #fff; font-weight: 800; font-size: 14px;
  display: grid; place-items: center; letter-spacing: .5px;
}
.brand-copy strong { display: block; font-size: 14px; line-height: 1.15; }
.brand-copy small { display: block; font-size: 11px; color: var(--ink-soft); }
.search { margin-left: auto; position: relative; width: min(360px, 42vw); }
.search input {
  width: 100%; padding: 9px 14px;
  border: 1px solid var(--line); border-radius: 10px;
  background: #fff; font-size: 14px; font-family: inherit; color: var(--ink);
  outline: none; transition: border-color .15s, box-shadow .15s;
}
.search input:focus { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(107,70,193,.14); }
.search-drop {
  position: absolute; top: calc(100% + 6px); left: 0; right: 0;
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  box-shadow: 0 16px 40px rgba(28,25,23,.14);
  max-height: 60vh; overflow: auto; padding: 6px;
}
.sr-item { display: block; padding: 9px 12px; border-radius: 8px; text-decoration: none; color: var(--ink); }
.sr-item:hover, .sr-item.sel { background: var(--brand-soft); }
.sr-item strong { font-size: 14px; }
.sr-item small { display: block; color: var(--ink-soft); font-size: 12px; margin-top: 2px; }
.sr-item .sr-ctx { display: block; color: var(--ink-faint); font-size: 12px; margin-top: 3px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sr-empty { padding: 12px; color: var(--ink-soft); font-size: 14px; }

.burger { display: none; border: none; background: none; cursor: pointer; padding: 8px; }
.burger span { display: block; width: 20px; height: 2px; background: var(--ink); margin: 4px 0; border-radius: 2px; }

/* ---------- Каркас ---------- */
.layout { display: flex; padding-top: var(--topbar-h); min-height: 100vh; }
.sidebar {
  width: var(--sidebar-w); flex: 0 0 var(--sidebar-w);
  border-right: 1px solid var(--line);
  position: sticky; top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h)); overflow-y: auto;
  padding: 14px 12px 40px; background: var(--card);
}
.content {
  flex: 1; min-width: 0; max-width: 860px;
  margin: 0 auto; padding: 36px 40px 80px;
}
.toc {
  flex: 0 0 220px; position: sticky; top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h)); overflow-y: auto;
  padding: 44px 20px 40px; font-size: 13px; display: none;
}
@media (min-width: 1400px) { .toc { display: block; } }
.toc-title { font-weight: 700; text-transform: uppercase; letter-spacing: .08em; font-size: 11px; color: var(--ink-faint); margin-bottom: 10px; }
.toc a { display: block; padding: 5px 10px; border-left: 2px solid var(--line); color: var(--ink-soft); text-decoration: none; line-height: 1.4; }
.toc a:hover, .toc a.active { color: var(--brand); border-color: var(--brand); }

/* ---------- Сайдбар ---------- */
.side-home {
  display: block; padding: 9px 12px; border-radius: 9px;
  font-weight: 600; font-size: 14px; text-decoration: none; color: var(--ink);
}
.side-home:hover, .side-home.is-active { background: var(--brand-soft); color: var(--brand-deep); }
.side-module { margin-top: 6px; border: none; }
.side-module summary {
  list-style: none; display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border-radius: 9px; cursor: pointer; font-size: 13.5px;
}
.side-module summary::-webkit-details-marker { display: none; }
.side-module summary:hover { background: #f5f5f4; }
.mod-badge {
  flex: 0 0 auto; width: 34px; height: 22px; border-radius: 6px;
  background: color-mix(in srgb, var(--mc) 14%, white);
  color: var(--mc); font-size: 11px; font-weight: 800;
  display: grid; place-items: center; letter-spacing: .03em;
}
.mod-title { font-weight: 600; }
.side-module[open] > summary .mod-title { color: var(--brand-deep); }
.side-lesson {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 10px 6px 14px; margin: 1px 0 1px 16px;
  border-left: 2px solid var(--line);
  text-decoration: none; color: var(--ink-soft); font-size: 13px; border-radius: 0 8px 8px 0;
}
.side-lesson:hover { background: #f5f5f4; color: var(--ink); }
.side-lesson.is-active { background: var(--brand-soft); color: var(--brand-deep); border-color: var(--brand); font-weight: 600; }
.side-num { flex: 0 0 38px; font-weight: 700; font-size: 12px; color: var(--ink-faint); }
.side-lesson.is-active .side-num { color: var(--brand); }
.side-name { flex: 1; line-height: 1.35; }
.side-done { flex: 0 0 16px; width: 16px; height: 16px; border-radius: 50%; border: 1.5px solid var(--line); display: none; }
.side-lesson.is-done .side-done { display: block; background: var(--ok); border-color: var(--ok); }
.side-lesson.is-done .side-done::after { content: "✓"; color: #fff; font-size: 10px; display: grid; place-items: center; height: 14px; font-weight: 800; }
.side-download { margin-left: 16px; border-left: 2px solid var(--line); }

/* ---------- Урок ---------- */
.crumbs { font-size: 13px; color: var(--ink-faint); margin-bottom: 14px; }
.crumbs a { color: var(--ink-soft); text-decoration: none; }
.crumbs a:hover { color: var(--brand); }
.lesson-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.chip {
  font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 999px;
  background: color-mix(in srgb, var(--mc, #6b46c1) 12%, white);
  color: var(--mc, var(--brand));
}
.chip.soft { background: #f5f5f4; color: var(--ink-soft); font-weight: 600; }
.lesson-head h1 { font-size: clamp(26px, 4vw, 36px); line-height: 1.2; margin: 0 0 8px; letter-spacing: -.02em; }
.lesson-lead { font-size: 17px; color: var(--ink-soft); margin: 0 0 10px; }

.lesson-body h2 {
  font-size: 22px; margin: 40px 0 14px; padding-top: 18px;
  border-top: 1px solid var(--line); letter-spacing: -.01em;
  scroll-margin-top: calc(var(--topbar-h) + 16px);
}
.lesson-body h2:first-child { border-top: none; padding-top: 0; margin-top: 24px; }
.lesson-body h3 { font-size: 17px; margin: 26px 0 10px; }
.lesson-body h4 { font-size: 15px; margin: 20px 0 8px; }
.lesson-body p { margin: 0 0 14px; }
.lesson-body a { color: var(--brand-deep); text-decoration: underline; text-decoration-color: rgba(107,70,193,.35); text-underline-offset: 3px; }
.lesson-body a:hover { text-decoration-color: var(--brand); }
.lesson-body code {
  font-family: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: .88em; background: #f5f5f4; border: 1px solid var(--line);
  padding: 1px 6px; border-radius: 6px;
}
.broken-link { color: var(--ink-soft); border-bottom: 1px dashed var(--ink-faint); }
hr.sep { border: none; border-top: 1px solid var(--line); margin: 28px 0; }

/* списки */
.md-list { margin: 0 0 16px; padding-left: 22px; }
.md-list li { margin: 4px 0; }
.md-list ul.nested, .md-list ol.nested { margin: 4px 0 2px; padding-left: 20px; }
.md-list ul.nested li::marker { color: var(--ink-faint); }

/* таблицы */
.table-wrap { overflow-x: auto; margin: 0 0 18px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
thead th {
  text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .05em;
  color: var(--ink-soft); background: #fafaf9; padding: 10px 14px;
  border-bottom: 1px solid var(--line); white-space: nowrap;
}
tbody td { padding: 10px 14px; border-bottom: 1px solid #f0eeec; vertical-align: top; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #fcfbfe; }

/* цитаты */
blockquote {
  margin: 0 0 16px; padding: 12px 18px;
  border-left: 3px solid var(--brand); background: var(--brand-soft);
  border-radius: 0 10px 10px 0; color: #44337a; font-size: 15px;
}
blockquote code { background: rgba(107,70,193,.1); border-color: rgba(107,70,193,.18); }

/* чек-боксы */
.check {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 7px 12px; margin: 2px 0; border-radius: 8px;
  cursor: pointer; font-size: 15px;
}
.check:hover { background: #f7f6f5; }
.check input {
  margin: 4px 0 0; width: 16px; height: 16px; accent-color: var(--ok);
  cursor: pointer; flex: 0 0 auto;
}
.check input:checked + span { color: var(--ink-soft); }
.check input:checked + span::after { content: ""; }

/* промпты и код */
figure.prompt-card, figure.code-card {
  margin: 18px 0 22px; border-radius: 14px; overflow: hidden;
  background: var(--dark); color: #e9e5f5;
  box-shadow: 0 10px 30px rgba(33,26,51,.22);
}
figure.code-card { background: #26232c; box-shadow: none; border: 1px solid #3a3742; }
figcaption {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 16px; font-size: 13px; font-weight: 600;
  background: rgba(255,255,255,.06); color: #cfc6ee;
  border-bottom: 1px solid rgba(255,255,255,.09);
}
.fig-icon { font-size: 14px; }
figure pre {
  margin: 0; padding: 16px 18px; overflow-x: auto;
  font-family: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 13px; line-height: 1.6; white-space: pre-wrap; word-break: break-word;
}
.copy-btn {
  display: block; width: 100%; padding: 10px; border: none; cursor: pointer;
  background: rgba(255,255,255,.07); color: #cfc6ee; font-size: 13px; font-weight: 600;
  font-family: inherit; transition: background .15s;
}
.copy-btn:hover { background: rgba(255,255,255,.14); color: #fff; }
.copy-btn.done { background: var(--ok); color: #fff; }

/* навигация по уроку */
.lesson-nav {
  display: flex; align-items: stretch; gap: 12px;
  margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--line);
}
.lnav {
  flex: 1; display: flex; flex-direction: column; gap: 3px;
  padding: 12px 16px; border: 1px solid var(--line); border-radius: 12px;
  text-decoration: none; color: var(--ink); background: #fff;
  transition: border-color .15s, box-shadow .15s;
}
.lnav:hover { border-color: var(--brand); box-shadow: 0 4px 16px rgba(107,70,193,.1); }
.lnav small { color: var(--ink-faint); font-size: 12px; }
.lnav span { font-weight: 600; font-size: 14px; line-height: 1.35; }
.lnav.next { text-align: right; }
.mark-read {
  flex: 0 0 auto; align-self: center; display: flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: 999px; cursor: pointer;
  border: 1.5px solid var(--line); background: #fff; color: var(--ink-soft);
  font-size: 13.5px; font-weight: 600; font-family: inherit; transition: all .15s;
}
.mr-dot { width: 14px; height: 14px; border-radius: 50%; border: 2px solid var(--ink-faint); display: inline-block; }
.mark-read:hover { border-color: var(--ok); color: var(--ok); }
.mark-read:hover .mr-dot { border-color: var(--ok); }
.mark-read.is-done { background: var(--ok-soft); border-color: var(--ok); color: var(--ok); }
.mark-read.is-done .mr-dot { border-color: var(--ok); background: var(--ok); box-shadow: inset 0 0 0 2.5px #fff; }

/* ---------- Главная ---------- */
.hero { display: flex; gap: 28px; align-items: flex-start; margin-bottom: 30px; }
.hero-copy { flex: 1; min-width: 0; }
.eyebrow {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .06em;
  text-transform: uppercase; color: var(--brand); background: var(--brand-soft);
  padding: 5px 12px; border-radius: 999px; margin-bottom: 14px;
}
.hero h1 { font-size: clamp(28px, 4.5vw, 42px); line-height: 1.15; letter-spacing: -.025em; margin: 0 0 14px; }
.hero-copy > p { font-size: 17px; color: var(--ink-soft); max-width: 56ch; }
.hero-stats { display: flex; gap: 26px; margin: 22px 0; flex-wrap: wrap; }
.hero-stats div { display: flex; flex-direction: column; }
.hero-stats strong { font-size: 26px; letter-spacing: -.02em; color: var(--brand-deep); }
.hero-stats span { font-size: 12.5px; color: var(--ink-faint); }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 12px 22px; border-radius: 11px;
  font-weight: 600; font-size: 15px; text-decoration: none; font-family: inherit;
  transition: transform .12s, box-shadow .12s;
}
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 6px 20px rgba(107,70,193,.35); }
.btn-primary:hover { background: var(--brand-deep); }
.btn-ghost { background: #fff; color: var(--brand-deep); border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--brand); }
.hero-progress { flex: 0 0 300px; }
.hp-card {
  background: #fff; border: 1px solid var(--line); border-radius: 16px;
  padding: 20px; box-shadow: 0 8px 28px rgba(28,25,23,.06);
}
.hp-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 10px; }
.hp-head span { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--ink-faint); }
.hp-head strong { font-size: 22px; color: var(--brand-deep); }
.hp-bar { height: 8px; border-radius: 99px; background: var(--brand-soft); overflow: hidden; }
.hp-bar div { height: 100%; width: 0%; border-radius: 99px; background: linear-gradient(90deg, var(--brand), #9f7aea); transition: width .4s; }
.hp-note { font-size: 12.5px; color: var(--ink-soft); margin: 10px 0 12px; }
.hp-continue { display: block; font-size: 14px; font-weight: 600; color: var(--brand-deep); text-decoration: none; padding: 10px 12px; background: var(--brand-soft); border-radius: 9px; }
.hp-continue:hover { background: #ebe4fa; }

.notice {
  background: var(--warn-bg); border: 1px solid var(--warn-line);
  border-radius: 12px; padding: 14px 18px; font-size: 14.5px; margin: 0 0 34px;
}
.notice a { color: #92400e; font-weight: 600; }

.idx-section { margin: 44px 0; }
.idx-heading h2 { font-size: 24px; margin: 0 0 4px; letter-spacing: -.02em; }
.idx-heading p { color: var(--ink-soft); margin: 0 0 18px; font-size: 14.5px; }
.idx-module {
  background: #fff; border: 1px solid var(--line); border-radius: 16px;
  margin-bottom: 16px; overflow: hidden;
}
.idx-mod-head {
  display: flex; align-items: center; gap: 14px; padding: 16px 20px;
  background: linear-gradient(90deg, color-mix(in srgb, var(--mc) 8%, white), transparent);
  border-bottom: 1px solid var(--line);
}
.idx-mod-code {
  width: 46px; height: 34px; border-radius: 9px; display: grid; place-items: center;
  background: var(--mc); color: #fff; font-weight: 800; font-size: 14px;
}
.idx-mod-head h2 { font-size: 18px; margin: 0; }
.idx-progress-line { margin: 2px 0 0; font-size: 12.5px; color: var(--ink-soft); }
.idx-count { color: var(--mc); font-weight: 700; }
.idx-mod-badge { margin-left: auto; font-size: 12.5px; color: var(--ink-faint); white-space: nowrap; }
.idx-lessons { display: grid; grid-template-columns: 1fr; }
.idx-lesson {
  display: flex; align-items: center; gap: 14px; padding: 12px 20px;
  text-decoration: none; color: var(--ink); border-bottom: 1px solid #f2f0ee;
  transition: background .12s;
}
.idx-lesson:last-child { border-bottom: none; }
.idx-lesson:hover { background: var(--brand-soft); }
.il-num {
  flex: 0 0 44px; font-weight: 800; font-size: 13px; text-align: center;
  color: var(--mc); background: color-mix(in srgb, var(--mc) 10%, white);
  border-radius: 7px; padding: 4px 0;
}
.il-body { flex: 1; min-width: 0; }
.il-body strong { display: block; font-size: 15px; }
.il-body small { color: var(--ink-soft); font-size: 13px; line-height: 1.4; display: block; }
.il-done { flex: 0 0 20px; width: 20px; height: 20px; border-radius: 50%; background: var(--ok-soft); border: 1.5px solid #bbf7d0; color: var(--ok); display: none; place-items: center; font-size: 11px; font-weight: 800; }
.idx-lesson.is-done .il-done { display: grid; }
.idx-lesson.is-done .il-done::after { content: "✓"; }
.idx-lesson.is-done strong { color: var(--ink-soft); }

.tracks tbody td:first-child { white-space: nowrap; }
.quickstart {
  margin-top: 20px; background: #fff; border: 1px solid var(--line);
  border-radius: 16px; padding: 22px 24px;
}
.quickstart h3 { margin: 0 0 12px; font-size: 17px; }
.quickstart ol { margin: 0 0 12px; padding-left: 22px; }
.quickstart li { margin: 6px 0; }
.qs-control { color: var(--ink-soft); font-size: 14px; margin: 0; padding-top: 10px; border-top: 1px dashed var(--line); }

.idx-mats { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; margin-bottom: 18px; }
.idx-mat {
  display: flex; gap: 14px; padding: 18px; background: #fff;
  border: 1px solid var(--line); border-radius: 14px; text-decoration: none; color: var(--ink);
  transition: border-color .15s, box-shadow .15s;
}
.idx-mat:hover { border-color: var(--brand); box-shadow: 0 6px 20px rgba(107,70,193,.1); }
.im-icon {
  flex: 0 0 42px; height: 42px; border-radius: 11px; display: grid; place-items: center;
  background: var(--brand-soft); color: var(--brand-deep); font-weight: 800; font-size: 17px;
}
.idx-mat strong { display: block; margin-bottom: 4px; }
.idx-mat small { color: var(--ink-soft); font-size: 13.5px; line-height: 1.45; display: block; }

/* ---------- Загрузки ---------- */
.dl-list { display: flex; flex-direction: column; gap: 14px; }
.dl-item {
  display: flex; align-items: center; gap: 20px; justify-content: space-between;
  background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 18px 22px;
}
.dl-item h3 { margin: 0 0 4px; font-size: 16px; }
.dl-item p { margin: 0; color: var(--ink-soft); font-size: 14px; }
.dl-btn {
  flex: 0 0 auto; padding: 11px 20px; border-radius: 10px; text-decoration: none;
  background: var(--brand); color: #fff; font-weight: 600; font-size: 14px;
  transition: background .15s;
}
.dl-btn:hover { background: var(--brand-deep); }
.dl-ext { opacity: .75; font-size: 12px; }

/* ---------- Печать ---------- */
@media print {
  .topbar, .sidebar, .toc, .lesson-nav, .copy-btn, .search { display: none !important; }
  .content { max-width: 100%; padding: 0; }
  body { font-size: 13px; }
}

/* ---------- Мобильная версия ---------- */
@media (max-width: 900px) {
  .search { width: auto; flex: 1; }
  .brand-copy { display: none; }
  .burger { display: block; }
  .sidebar {
    position: fixed; left: 0; top: var(--topbar-h); z-index: 40;
    transform: translateX(-100%); transition: transform .2s ease;
    box-shadow: 0 20px 50px rgba(28,25,23,.18); width: 290px;
  }
  body.nav-open .sidebar { transform: none; }
  .content { padding: 22px 18px 60px; }
  .hero { flex-direction: column; }
  .hero-progress { flex: auto; width: 100%; }
  .lesson-nav { flex-wrap: wrap; }
  .lnav { min-width: 45%; }
  .dl-item { flex-direction: column; align-items: flex-start; gap: 12px; }
  .idx-mod-head { flex-wrap: wrap; gap: 10px; }
  .idx-mod-badge { margin-left: 46px; }
}