/* ———— layout ———— */
/* Три колонки живут в общем центрированном контейнере — так устроены страницы
   документации Stripe, Tailwind и React: по краям экрана симметричные поля,
   ничего не прилипает к границам окна. Боковые колонки одной ширины — иначе
   ничего не прилипает к границам окна. Ширина конспекта 700px — около 70
   знаков в строке. Содержание — узкий указатель (240px), ассистенту нужна
   ширина под диалог (350px): держать их одинаковыми ради идеальной симметрии
   значит раздувать оглавление. */
.lec-shell {
  display: grid;
  grid-template-columns: 240px minmax(0, 700px) 350px;
  justify-content: center;
  /* 40px между колонками — как разводят документации Mozilla (47px) и React
     (52px); 32px читались теснее нормы. */
  gap: 40px;
  padding: 28px var(--lec-gutter) 64px;
  align-items: start;
}
/* Шапка и вкладки — полосы во всю ширину, но их содержимое выровнено по той же
   сетке, что и колонки ниже. */
.lec-head, .lec-tabs { padding-inline: var(--lec-gutter); }
.lec-shell, .lec-head, .lec-tabs { --lec-gutter: max(24px, calc((100% - 1370px) / 2)); }

@media (max-width: 1300px) {
  .lec-shell { grid-template-columns: 220px minmax(0, 1fr) 320px; gap: 22px; padding: 22px 16px 60px; }
  .lec-head, .lec-tabs { padding-inline: 16px; }
}
@media (max-width: 1100px) {
  .lec-shell { grid-template-columns: 1fr; padding: 18px 16px 56px; gap: 14px; }
  .lec-toc, .lec-chat { position: static !important; max-height: none !important; }
  .lec-toc { order: -1; }
  .lec-toc .toc-list { max-height: 200px; overflow-y: auto; }
  .lec-report { padding: 24px 20px 36px; }
  .lec-head { padding-block: 16px; padding-inline: 16px; }
  .lec-chat .msgs { min-height: 120px; max-height: 50vh; }
}

/* На узких экранах средняя колонка становится резиновой — держим ту же меру. */
.lec-report { max-width: 700px; width: 100%; margin: 0 auto; }

/* ———— sticky panels ———— */
.lec-toc, .lec-chat {
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 100px);
  display: flex; flex-direction: column;
}
/* Ассистент занимает всю высоту окна при скролле — без пустоты под панелью. */
.lec-chat { height: calc(100vh - 100px); }
.lec-chat .msgs { min-height: 0; }
.lec-chat .empty { flex: 1; display: flex; flex-direction: column; justify-content: center; }

/* ———— артефакты внутри конспекта ———— */
.report-artifacts { display: grid; gap: 16px; margin-top: 16px; }
.art-embed { border: 1px solid var(--rule); border-radius: 16px; padding: 14px 16px 12px; background: var(--surface); margin: 16px 0 8px; }
.art-embed-head { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.art-embed-head h3 { margin: 0; font-size: 15px; letter-spacing: -0.01em; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.art-embed-tools { display: flex; gap: 12px; align-items: baseline; }
.art-embed-tools a, .art-embed-tools button { color: var(--ink-3); background: none; border: 0; padding: 0; cursor: pointer; font: 600 12.5px var(--sans); text-decoration: none; }
.art-embed-tools a:hover, .art-embed-tools button:hover { color: var(--coral); }
.art-embed-tools form { display: inline; }
/* Схема масштабируется под ширину и не выше 380px: viewBox сжимает содержимое, скролла из-за масштаба нет. */
.art-embed .art-diagram .art-canvas { max-height: 560px; overflow: hidden; display: grid; place-items: center; }
.art-embed .art-diagram .art-canvas svg { height: auto; max-height: 560px; }
.art-embed .art-chart .art-canvas { height: 320px; }
.art-embed .art-table table { font-size: 13px; }
.art-embed .art-image img { display: block; max-width: 100%; max-height: 560px; width: auto; margin: 0 auto; border-radius: 10px; }

/* ———— header ———— */
.lec-head {
  background: var(--bg);
  padding-block: 18px;
  border-bottom: 1px solid var(--rule);
}
.lec-head .crumbs-inline { margin-bottom: 12px; }
.lec-head .top { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; flex-wrap: wrap; }

.lec-title-wrap { min-width: 0; flex: 1; max-width: 700px; }
.lec-title-row { display: flex; align-items: center; gap: 10px; }
.lec-title {
  font-size: clamp(24px, 2.6vw, 32px);
  letter-spacing: -0.025em; line-height: 1.15;
  font-weight: 800;
  padding: 4px 10px;
  margin: -4px -10px;
  border-radius: var(--r-sm);
  cursor: text;
  outline: none;
  transition: background .15s, box-shadow .15s;
  word-break: break-word;
  min-width: 0;
  flex: 1;
}
.lec-title:hover { background: var(--bg-3); }
.lec-title:focus-visible { background: var(--surface); box-shadow: 0 0 0 2px var(--coral); }
.lec-title-pen {
  flex: none;
  width: 30px; height: 30px;
  display: grid; place-items: center;
  border-radius: 8px; background: transparent; border: none;
  color: var(--ink-3); cursor: pointer; transition: background .15s, color .15s;
}
.lec-title-pen:hover { background: var(--bg-3); color: var(--coral); }
.lec-title-saved {
  font-size: 11.5px; color: var(--mint-deep); font-weight: 700;
  opacity: 0; transition: opacity .2s;
}
.lec-title-saved.on { opacity: 1; }

.lec-meta {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  margin-top: 12px; font-size: 12.5px; color: var(--ink-3);
}
.lec-meta .chip { font-size: 11.5px; }

.lec-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; flex: none; }
.lec-actions-sep { width: 1px; height: 24px; background: var(--rule-2); margin: 0 4px; flex: none; }
@media (max-width: 640px) { .lec-actions-sep { display: none; } }

/* ———— course picker ———— */
.course-picker {
  margin-top: 14px;
  position: relative;
  display: inline-flex; gap: 8px; align-items: center; flex-wrap: wrap;
  font-size: 13px; color: var(--ink-3);
}
.course-picker > .label { font-weight: 600; }
.course-picker .selected {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 14px;
  border: 1.5px solid var(--rule-2); border-radius: 999px;
  cursor: pointer;
  background: var(--surface);
  font-size: 13.5px; color: var(--ink);
  transition: border-color .15s, background .15s;
}
.course-picker .selected:hover { border-color: var(--ink-3); }
.course-picker .selected.open { border-color: var(--coral); background: var(--coral-soft); }
.course-picker .selected .dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--ink-4); flex: none;
}
.course-picker .selected.empty { color: var(--ink-3); }
.course-picker .selected .caret {
  color: var(--ink-3); font-size: 10px; margin-left: 2px;
}
.course-picker .panel {
  position: absolute; top: calc(100% + 6px); left: 0;
  min-width: 280px; max-width: 360px;
  background: var(--surface); border: 1px solid var(--rule);
  border-radius: var(--r-sm); box-shadow: var(--shadow-lg);
  padding: 8px; z-index: 30;
  display: none;
}
.course-picker .panel.open { display: block; }
.course-picker .panel .search {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px;
  background: var(--bg-2); border-radius: var(--r-sm);
  margin-bottom: 6px;
}
.course-picker .panel .search input {
  border: 0; background: transparent; width: 100%;
  font: 500 13.5px var(--sans); color: var(--ink); outline: none;
}
.course-picker .panel .list {
  max-height: 240px; overflow: auto; margin: 0; padding: 0; list-style: none;
}
.course-picker .panel .item {
  display: grid; grid-template-columns: 14px 1fr auto;
  gap: 10px; align-items: center;
  padding: 8px 10px; border-radius: 8px; cursor: pointer;
  font-size: 13.5px; color: var(--ink);
  transition: background .12s;
}
.course-picker .panel .item:hover { background: var(--bg-2); }
.course-picker .panel .item.on { background: var(--coral-soft); color: var(--coral-deep); font-weight: 600; }
.course-picker .panel .item .dot { width: 10px; height: 10px; border-radius: 50%; }
.course-picker .panel .item .check { color: var(--coral); font-weight: 700; font-size: 14px; }
.course-picker .panel .none-item { color: var(--ink-3); font-style: italic; }
.course-picker .panel .create {
  display: grid; grid-template-columns: 14px 1fr auto;
  gap: 10px; align-items: center;
  padding: 10px; border-radius: 8px; cursor: pointer;
  font-size: 13.5px; color: var(--coral-deep); font-weight: 600;
  background: var(--coral-soft);
  margin-top: 6px;
}
.course-picker .panel .create input {
  border: 0; background: transparent; outline: none;
  font: 600 13.5px var(--sans); color: var(--coral-deep);
  width: 100%; min-width: 0;
}
.course-picker .panel .create input::placeholder { color: rgba(231,78,45,.6); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.course-picker .panel .create .kbd { color: var(--coral-deep); }

/* ———— TOC ———— */
.lec-toc {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--r-lg);
  padding: 14px 10px;
  box-shadow: var(--shadow);
}
.lec-toc .h {
  font-size: 11.5px; font-weight: 700;
  color: var(--ink-3); letter-spacing: .08em; text-transform: uppercase;
  margin: 0 0 12px; padding: 0 6px;
}
.lec-toc .toc-list { list-style: none; margin: 0; padding: 0; overflow-y: auto; flex: 1; }
.lec-toc .toc-list li { margin: 0; }
.lec-toc .toc-list a {
  display: grid; grid-template-columns: 20px 1fr auto; gap: 8px; align-items: baseline;
  padding: 7px 8px; border-radius: var(--r-sm);
  color: var(--ink-2); font-size: 12.5px; font-weight: 500;
  text-decoration: none;
  line-height: 1.35;
  transition: background .15s, color .15s;
}
.lec-toc .toc-list a:hover { background: var(--bg-2); color: var(--ink); }
.lec-toc .toc-list a.active { background: var(--coral-soft); color: var(--coral-deep); font-weight: 700; }
.lec-toc .toc-list a .n {
  font-size: 11px; font-weight: 700;
  color: var(--ink-3); font-variant-numeric: tabular-nums;
}
.lec-toc .toc-list a.active .n { color: var(--coral); }
.lec-toc .toc-list a .ts {
  font-family: var(--mono); font-size: 11px;
  color: var(--ink-3); font-variant-numeric: tabular-nums;
}
.lec-toc .toc-list a.active .ts { color: var(--coral-deep); }
.lec-toc .toc-foot {
  margin-top: 10px; padding-top: 10px;
  border-top: 1px solid var(--rule);
  display: flex; gap: 6px; flex-wrap: wrap;
}
.lec-toc .toc-foot a {
  font-size: 12px; color: var(--ink-3);
  padding: 5px 10px; border-radius: 999px;
  background: var(--bg-2); text-decoration: none;
  transition: color .15s, background .15s;
}
.lec-toc .toc-foot a:hover { background: var(--coral-soft); color: var(--coral-deep); }

/* ———— report ———— */
.lec-report {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--r-lg);
  padding: 36px 44px 48px;
  box-shadow: var(--shadow);
  min-width: 0;
}
.lec-report .kicker {
  font-size: 11.5px; font-weight: 700;
  color: var(--coral-deep); letter-spacing: .08em; text-transform: uppercase;
  margin-bottom: 12px;
}
.lec-report h2.report-title {
  font-size: clamp(28px, 3.4vw, 40px);
  letter-spacing: -0.03em; line-height: 1.1;
  font-weight: 800;
  margin: 0 0 24px;
}
.report-tldr {
  background: linear-gradient(135deg, var(--bg-2), var(--coral-soft));
  border-radius: var(--r-lg);
  padding: 22px 26px;
  margin: 0 0 36px;
  border-left: 4px solid var(--coral);
}
.report-tldr .lab {
  font-size: 11px; font-weight: 700; color: var(--coral-deep);
  letter-spacing: .08em; text-transform: uppercase;
  margin-bottom: 8px;
}
.report-tldr p {
  margin: 0; font-size: 16px; line-height: 1.6;
  color: var(--ink); font-weight: 500;
}

.report-section { margin: 48px 0 0; }
.report-section .h2 {
  font-size: 13px; font-weight: 700; color: var(--ink-3);
  letter-spacing: .08em; text-transform: uppercase;
  margin: 0 0 18px;
  padding-top: 28px; border-top: 1px solid var(--rule);
}
.report-section:first-of-type .h2 { padding-top: 0; border-top: 0; }

.report-chapter { margin: 64px 0 0; padding-top: 40px; border-top: 1px dashed var(--rule); scroll-margin-top: 96px; }
.report-chapter:first-of-type { margin-top: 0; padding-top: 0; border-top: 0; }
.report-chapter .ch-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 14px; flex-wrap: wrap; }
.report-chapter .ch-n {
  font-size: 20px; font-weight: 800;
  color: var(--coral-deep); letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}
.report-chapter h3 {
  font-size: 26px; letter-spacing: -0.025em;
  line-height: 1.2; font-weight: 800;
  margin: 0;
}
.report-chapter .ch-range {
  font-family: var(--mono); font-size: 11.5px;
  color: var(--ink-3); font-variant-numeric: tabular-nums;
}
.report-chapter .ch-summary {
  font-size: 15.5px; line-height: 1.65; color: var(--ink-2);
  margin: 0 0 14px;
}
.report-chapter .ch-notes {
  font-size: 15px; line-height: 1.75; color: var(--ink);
}
.report-chapter .ch-notes p { margin: 0 0 12px; color: var(--ink); }
.report-chapter .ch-notes ul, .report-chapter .ch-notes ol { margin: 0 0 14px; padding-left: 22px; }
.report-chapter .ch-notes li { margin-bottom: 6px; line-height: 1.6; }
.report-chapter .ch-notes li::marker { color: var(--coral); }
.report-chapter .ch-notes h2 { font-size: 17px; font-weight: 800; margin: 22px 0 10px; letter-spacing: -0.015em; }
.report-chapter .ch-notes strong, .report-chapter .ch-notes b { color: var(--ink); font-weight: 700; }
.report-chapter .ch-notes code { font-family: var(--mono); font-size: 13.5px; background: var(--bg-3); padding: 1px 6px; border-radius: 5px; }

.report-quote {
  background: var(--bg-2); border-radius: var(--r);
  padding: 18px 22px; margin: 0 0 12px;
  border-left: 3px solid var(--coral);
}
.report-quote .q { font-size: 15.5px; line-height: 1.6; color: var(--ink); font-style: italic; }
.report-quote .meta { display: flex; gap: 12px; margin-top: 10px; font-size: 12.5px; color: var(--ink-3); align-items: center; flex-wrap: wrap; }
.report-quote .meta .ts { font-family: var(--mono); color: var(--coral-deep); font-weight: 700; font-variant-numeric: tabular-nums; }

.report-gloss { display: grid; gap: 12px; }
.report-gloss .term {
  display: grid; grid-template-columns: 200px 1fr;
  gap: 18px; padding: 12px 0;
  border-bottom: 1px dotted var(--rule);
}
.report-gloss .term:last-child { border-bottom: 0; }
.report-gloss .term .t { font-weight: 700; color: var(--ink); font-size: 14.5px; }
.report-gloss .term .d { color: var(--ink-2); font-size: 14.5px; line-height: 1.55; }
@media (max-width: 700px) {
  .report-gloss .term { grid-template-columns: 1fr; gap: 4px; }
}

.report-qa { list-style: none; margin: 0; padding: 0; counter-reset: qa; }
.report-qa li {
  counter-increment: qa;
  padding: 14px 0;
  border-bottom: 1px solid var(--rule);
}
.report-qa li:last-child { border-bottom: 0; }
.report-qa li .q { font-weight: 700; color: var(--ink); font-size: 15px; line-height: 1.5; }
.report-qa li .q::before {
  content: counter(qa) ".";
  display: inline-block;
  width: 26px;
  color: var(--coral-deep);
  font-weight: 800;
}
.report-qa li .a {
  margin-top: 8px; padding-left: 26px;
  color: var(--ink-2); font-size: 14.5px; line-height: 1.6;
}
.report-qa li .a b { color: var(--ink); font-weight: 700; }
.qa-reveal { margin: 10px 0 0 26px; }
.qa-reveal > summary {
  list-style: none; cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; border-radius: 999px;
  background: var(--bg-3); color: var(--ink-2);
  font-size: 12.5px; font-weight: 600;
  border: 1px solid var(--rule);
  transition: background .15s, color .15s, border-color .15s;
}
.qa-reveal > summary::-webkit-details-marker { display: none; }
.qa-reveal > summary:hover { background: var(--coral-soft); color: var(--coral-deep); border-color: var(--coral-soft); }
.qa-reveal[open] > summary { background: var(--coral-soft); color: var(--coral-deep); border-color: var(--coral-soft); }
.qa-reveal > summary::before { content: "?"; font-weight: 800; color: var(--coral-deep); }
.qa-reveal[open] > summary::before { content: "✓"; }
.qa-reveal .a { margin-top: 10px; padding-left: 0; }

.report-todos { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.report-todos li {
  padding: 14px 18px;
  background: var(--bg-2); border-radius: var(--r-sm);
}
.report-todos li .topic { font-weight: 700; color: var(--ink); font-size: 14.5px; margin-bottom: 4px; }
.report-todos li .why { font-size: 13.5px; color: var(--ink-2); line-height: 1.55; }

/* ———— chat ———— */
.lec-chat {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--r-lg);
  padding: 0;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.lec-chat .chat-head {
  padding: 14px 20px;
  border-bottom: 1px solid var(--rule);
  background: var(--bg-2);
}
.lec-chat .chat-head .h {
  font-size: 14px; font-weight: 700; color: var(--ink);
  display: flex; align-items: center; gap: 8px;
  /* Заголовок и «очистить» — одной строкой: в узкой колонке название иначе
     переносилось и шапка панели становилась двухэтажной. */
  white-space: nowrap;
}
.lec-chat .chat-head .h > span:not(.b) { overflow: hidden; text-overflow: ellipsis; }
.lec-chat .chat-head .h .b {
  width: 20px; height: 20px; border-radius: 6px;
  background: var(--coral); color: #fff;
  display: grid; place-items: center;
  font-size: 12px; font-weight: 800;
}
.lec-chat .chat-head .h .clr {
  margin-left: auto; flex: none;
  background: transparent; border: 0; cursor: pointer;
  font-size: 11.5px; font-weight: 600; color: var(--ink-3);
  padding: 4px 10px; border-radius: 999px;
  transition: color .15s, background .15s;
}
.lec-chat .chat-head .h .clr:hover { background: var(--surface); color: var(--coral); }
.lec-chat .chat-head .sub { font-size: 12px; color: var(--ink-3); margin-top: 4px; }

.lec-chat .msgs {
  flex: 1; overflow-y: auto;
  padding: 16px 18px;
  display: flex; flex-direction: column; gap: 14px;
  min-height: 180px;
}
.lec-chat .msg { display: flex; gap: 10px; }
.lec-chat .msg.user { justify-content: flex-end; }
.lec-chat .msg .bubble {
  padding: 10px 14px; border-radius: 14px;
  font-size: 14px; line-height: 1.55;
  max-width: 88%;
  word-wrap: break-word; overflow-wrap: break-word;
}
.lec-chat .msg.user .bubble { background: var(--coral); color: #fff; border-bottom-right-radius: 4px; }
.lec-chat .msg.user .bubble p { color: #fff; }
.lec-chat .msg.assistant .bubble { background: var(--bg-2); color: var(--ink); border-bottom-left-radius: 4px; }
.lec-chat .msg .bubble p { margin: 0 0 8px; }
.lec-chat .msg .bubble p:last-child { margin: 0; }
.lec-chat .msg .bubble ul, .lec-chat .msg .bubble ol { margin: 4px 0 8px; padding-left: 20px; }
.lec-chat .msg .bubble code { font-family: var(--mono); font-size: 12.5px; background: var(--bg-3); padding: 1px 5px; border-radius: 4px; }
.lec-chat .msg.user .bubble code { background: rgba(255,255,255,.18); color: #fff; }
.lec-chat .msg .bubble strong { font-weight: 700; }
.lec-chat .msg .bubble .ts-mark {
  display: inline-block; font-family: var(--mono); font-size: 11.5px;
  background: var(--sun-soft); color: var(--sun-ink); padding: 1px 6px; border-radius: 5px;
  margin-right: 2px;
}

.lec-chat .typing { display: inline-flex; gap: 4px; padding: 4px 0; }
.lec-chat .typing span {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--ink-3); display: inline-block;
  animation: typing 1.2s infinite both;
}
.lec-chat .typing span:nth-child(2) { animation-delay: .2s; }
.lec-chat .typing span:nth-child(3) { animation-delay: .4s; }
@keyframes typing { 0%, 60%, 100% { opacity: .3; } 30% { opacity: 1; } }

.lec-chat .empty .ic {
  width: 44px; height: 44px; border-radius: var(--r-sm);
  background: var(--coral-soft); color: var(--coral-deep);
  display: grid; place-items: center; margin: 0 auto 12px;
  font-size: 18px;
}
.lec-chat .empty .sample {
  display: flex; flex-direction: column; gap: 6px;
  text-align: left;
}
.lec-chat .empty .sample button {
  background: var(--bg-2); border: 0;
  padding: 9px 12px; border-radius: var(--r-sm);
  font: 500 12.5px var(--sans); color: var(--ink-2);
  cursor: pointer; text-align: left;
  transition: background .15s, color .15s;
}
.lec-chat .empty .sample button:hover { background: var(--coral-soft); color: var(--coral-deep); }

.lec-chat .composer {
  padding: 10px;
  border-top: 1px solid var(--rule);
  background: var(--surface);
}
.lec-chat .composer-inner {
  display: flex; gap: 8px; align-items: flex-end;
  background: var(--bg-2);
  border: 1.5px solid transparent;
  border-radius: 14px;
  padding: 8px 8px 8px 12px;
  transition: border-color .15s, background .15s;
}
.lec-chat .composer-inner:focus-within { border-color: var(--coral); background: var(--surface); }
.lec-chat .composer textarea {
  flex: 1; border: 0; background: transparent; resize: none;
  font: 500 14px/1.5 var(--sans); color: var(--ink); outline: none;
  max-height: 160px; min-height: 22px;
  padding: 4px 0;
}
.lec-chat .composer textarea::placeholder { color: var(--ink-4); }
.lec-chat .composer .send {
  flex: none; width: 34px; height: 34px;
  border-radius: 50%; background: var(--coral); color: #fff;
  border: 0; cursor: pointer;
  display: grid; place-items: center;
  transition: background .15s, transform .15s;
}
.lec-chat .composer .send:hover:not(:disabled) { background: var(--coral-deep); transform: translateY(-1px); }
.lec-chat .composer .send:disabled { opacity: .4; cursor: not-allowed; }
.lec-chat .composer .hint {
  display: flex; gap: 10px; align-items: center;
  padding: 0 12px 4px;
  font-size: 11px; color: var(--ink-4);
}

/* ———— processing/empty states ———— */

.share-link {
  margin-top: 14px; padding: 12px 16px;
  background: var(--mint-soft); border-radius: var(--r-sm);
  color: var(--mint-deep); font-size: 13px;
  display: flex; gap: 12px; align-items: center; flex-wrap: wrap;
}
.share-link input {
  flex: 1; min-width: 240px;
  background: transparent; border: 0;
  color: var(--mint-deep); font: inherit; outline: none;
}

.export-menu { display: inline-block; position: relative; }
.export-menu > summary {
  list-style: none; cursor: pointer;
}
.export-menu > summary::-webkit-details-marker { display: none; }
.export-menu .panel {
  position: absolute; right: 0; top: calc(100% + 6px);
  background: var(--surface); border: 1px solid var(--rule);
  border-radius: var(--r-sm); min-width: 240px; z-index: 20;
  font-size: 13px; box-shadow: var(--shadow); overflow: hidden;
}
.export-menu .panel a {
  display: block; padding: 12px 16px;
  color: var(--ink-2); text-decoration: none;
  border-bottom: 1px solid var(--rule);
}
.export-menu .panel a:last-child { border-bottom: 0; }
.export-menu .panel a:hover { background: var(--bg-2); color: var(--ink); }

.failure-block {
  margin-top: 18px;
  padding: 18px 22px;
  background: var(--danger-dim);
  border-radius: var(--r); border-left: 4px solid var(--danger);
}
.failure-block .code {
  font-size: 11.5px; color: var(--danger);
  letter-spacing: .06em; text-transform: uppercase;
  font-weight: 700; margin-bottom: 8px;
}
.failure-block h3 { font-size: 18px; margin: 0 0 8px; }
.failure-block p { color: var(--ink-2); font-size: 14.5px; line-height: 1.55; margin: 0; }
.failure-block .cta {
  font-size: 13px; color: var(--ink-3);
  padding: 12px 14px; background: var(--surface);
  border-radius: 8px; margin-top: 12px;
}

.restart-card {
  padding: 20px 24px;
  background: var(--surface); border-radius: var(--r-lg);
  border: 1px solid var(--rule);
  margin-top: 16px;
}
.restart-card h3 { font-size: 18px; margin: 0 0 14px; }
.restart-card .opt { display: flex; flex-direction: column; gap: 10px; margin-bottom: 16px; }
.restart-card label {
  display: grid; grid-template-columns: 18px 1fr;
  gap: 10px; align-items: start; cursor: pointer; font-size: 14px;
}
.restart-card label input { accent-color: var(--coral); margin-top: 2px; }

.lec-not-done { max-width: 760px; margin: 24px auto 64px; padding: 0 24px; }
@media (max-width: 480px) { .lec-not-done { padding: 0 16px; } }
@media (max-width: 640px) {
  .lec-head .top { gap: 14px; }
  .lec-actions { gap: 6px; }
  .lec-title { font-size: clamp(20px, 5vw, 28px); }
  .lec-title-pen { width: 44px; height: 44px; }
  .course-picker .panel { min-width: 0; left: 0; right: 0; max-width: none; position: fixed; bottom: 0; top: auto; border-radius: 18px 18px 0 0; z-index: 100; }
  .export-menu .panel { min-width: 0; left: 0; right: 0; position: fixed; bottom: 0; top: auto; border-radius: 18px 18px 0 0; z-index: 100; }
  .share-link input { min-width: 0; }
  .lec-chat .composer .send { width: 44px; height: 44px; }
  .lec-chat .chat-head .h .clr { padding: 10px 14px; min-height: 44px; }
  .report-chapter h3 { font-size: 20px; }
  .report-chapter .ch-notes { font-size: 14px; }
}

/* публичный пример: CTA для не-владельца */
.lec-public-cta {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  margin: 0 0 22px; padding: 14px 18px;
  background: var(--coral-soft); border: 1px solid var(--coral); border-radius: 14px;
}
.lec-public-cta .txt { font-size: 14px; color: var(--ink); line-height: 1.5; }
.lec-public-cta .txt b { color: var(--coral-deep); font-weight: 800; }
.lec-public-cta .btn { white-space: nowrap; }

/* У reader собственная сетка: кабинетная навигация не сжимает её до ширины формы. */
.page-reader { background: var(--tk-bg); color: var(--tk-ink); }
.page-reader .btn-coral { background: var(--tk-action-coral); border-color: var(--tk-action-coral); color: var(--tk-action-coral-ink); box-shadow: none; }
.page-reader :focus-visible { outline: var(--tk-space-2) solid var(--tk-coral-ink); outline-offset: var(--tk-space-4); }
.page-reader .lec-head, .page-reader .lec-tabs, .page-reader .lec-shell { --lec-gutter: var(--tk-space-28); max-width: 1600px; margin-inline: auto; }
.page-reader .lec-head { position: relative; padding: var(--tk-space-28) var(--lec-gutter); border: 0; background: transparent; }
.page-reader .lec-head .crumbs-inline { padding-right: 360px; min-height: var(--tk-space-40); margin-bottom: var(--tk-space-24); font-size: var(--tk-space-14); }
.page-reader .lec-head .crumbs-inline > span:last-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.page-reader .lec-head .top { display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: var(--tk-space-28); align-items: center; }
.page-reader .lec-head .top:not(:has(.reader-cover)) { grid-template-columns: 1fr; }
.page-reader .lec-title-wrap { max-width: none; }
.page-reader .lec-title { font-size: clamp(var(--tk-space-28), 3.1vw, calc(var(--tk-space-24) * 2)); line-height: 1.08; letter-spacing: -.045em; font-weight: 800; }
.page-reader .lec-title-row { gap: var(--tk-space-8); }
.page-reader .lec-title-pen { align-self: start; }
.page-reader .lec-title-saved { position: absolute; right: var(--tk-space-28); bottom: var(--tk-space-8); }
.page-reader .lec-meta { margin-top: var(--tk-space-18); gap: var(--tk-space-8); }
.page-reader .lec-meta .chip { background: transparent; border: 1px solid var(--tk-rule); font-size: var(--tk-space-12); }
.page-reader .lec-meta .chip-mint { color: var(--tk-mint-ink); }
.page-reader .lec-actions { position: absolute; top: var(--tk-space-24); right: var(--lec-gutter); gap: var(--tk-space-8); }
.page-reader .lec-actions .btn { padding: var(--tk-space-10) var(--tk-space-16); border-radius: var(--tk-radius-small); }
.reader-cover { width: 160px; aspect-ratio: 4 / 3; display: grid; place-items: center; }
.reader-cover img { display: block; width: 100%; height: auto; border-radius: var(--tk-radius-small); }
.reader-paper { position: relative; width: 90%; aspect-ratio: 4 / 3; padding: var(--tk-space-16); background: var(--tk-live-paper); color: var(--tk-live-ink); border: 1px solid var(--tk-rule-strong); border-radius: var(--tk-radius-xsmall); transform: rotate(-4deg); box-shadow: var(--shadow); }
.reader-paper-label { display: block; font: 700 var(--tk-space-10) var(--sans); letter-spacing: .16em; margin-bottom: var(--tk-space-12); }
.reader-paper-line { display: block; width: 80%; height: 1px; background: var(--tk-live-track); margin-top: var(--tk-space-10); }
.reader-paper-line.short { width: 55%; }
.reader-paper-mark { position: absolute; right: var(--tk-space-14); bottom: var(--tk-space-8); font-size: var(--tk-space-28); color: var(--tk-coral-ink); }
.page-reader .reader-meta-actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--tk-space-12); margin-top: var(--tk-space-14); }
.page-reader .kind-menu, .page-reader .course-picker { margin-top: 0; }
.page-reader .kind-menu[open] { flex-basis: 100%; }
.page-reader .lec-more { display: none; }
.page-reader .course-picker .selected { border: 1px solid var(--tk-rule-strong); background: transparent; }
.page-reader .lec-tabs { padding-inline: var(--lec-gutter); gap: var(--tk-space-24); background: transparent; }
.page-reader .lec-tabs button { padding: var(--tk-space-16) var(--tk-space-4); font-size: var(--tk-space-16); font-weight: 500; }
.page-reader .lec-tabs button.on { font-weight: 700; border-bottom-color: var(--tk-action-coral); }
.page-reader .lec-tabs button .n { font-size: var(--tk-space-10); background: var(--tk-surface-muted); }
.page-reader .lec-shell { grid-template-columns: minmax(150px, .7fr) minmax(0, 2.2fr) minmax(250px, 1fr); gap: var(--tk-space-16); padding: var(--tk-space-24) var(--lec-gutter) calc(var(--tk-space-40) * 2); }
.page-reader .lec-report { max-width: none; border-radius: var(--tk-radius-small); padding: var(--tk-space-28); box-shadow: none; }
.page-reader .lec-toc { border-radius: var(--tk-radius-small); box-shadow: none; padding: var(--tk-space-20) var(--tk-space-10); background: transparent; }
.page-reader .lec-toc .h { font-size: var(--tk-space-16); text-transform: none; letter-spacing: -.02em; color: var(--tk-ink); line-height: 1.3; padding-inline: var(--tk-space-6); }
.page-reader .lec-toc .toc-list a { display: grid; grid-template-columns: var(--tk-space-24) minmax(0, 1fr); gap: var(--tk-space-8); padding: var(--tk-space-12) var(--tk-space-6); font-size: var(--tk-space-12); line-height: 1.4; }
.page-reader .lec-toc .toc-list .n { display: grid; place-items: center; width: var(--tk-space-24); height: var(--tk-space-24); border-radius: 50%; background: var(--tk-surface-muted); color: var(--tk-ink); font-family: var(--sans); }
.page-reader .lec-toc .toc-list .ts { grid-column: 2; margin-top: calc(-1 * var(--tk-space-6)); color: var(--tk-ink-3); font-size: var(--tk-space-10); }
.page-reader .lec-toc .toc-list a.active { background: var(--tk-coral-soft); color: var(--tk-ink); }
.page-reader .lec-toc .toc-list a.active .n { background: var(--tk-action-coral); color: var(--tk-action-coral-ink); }
.page-reader .lec-toc, .page-reader .lec-chat { top: var(--tk-space-24); max-height: calc(100vh - var(--tk-space-24) * 2); }
.page-reader .lec-report .kicker { font-size: var(--tk-space-10); color: var(--tk-ink-3); letter-spacing: .04em; margin-bottom: var(--tk-space-10); }
.page-reader .lec-report h2.report-title { font-size: var(--tk-space-32); line-height: 1.1; letter-spacing: -.04em; margin-bottom: var(--tk-space-20); }
.page-reader .report-tldr { padding: var(--tk-space-16) var(--tk-space-18); margin: 0 0 var(--tk-space-28); background: color-mix(in srgb, var(--tk-mint-soft) 50%, var(--tk-surface)); border: 0; border-radius: var(--tk-radius-small); }
.page-reader .report-tldr .lab { display: none; }
.page-reader .report-tldr p { font-size: var(--tk-space-16); line-height: 1.65; font-weight: 400; }
.page-reader .report-section { padding: 0; margin-top: var(--tk-space-32); }
.page-reader .report-section .h2 { font-size: var(--tk-space-20); color: var(--tk-ink); letter-spacing: -.025em; text-transform: none; padding-top: var(--tk-space-24); margin-bottom: var(--tk-space-16); }
.page-reader .report-chapter { padding-top: var(--tk-space-28); margin-top: var(--tk-space-32); border-top-style: solid; }
.page-reader .report-chapter .ch-head { gap: var(--tk-space-8); margin-bottom: var(--tk-space-16); }
.page-reader .report-chapter .ch-n { font-size: var(--tk-space-12); color: var(--tk-coral-ink); width: 100%; }
.page-reader .report-chapter h3 { font-size: var(--tk-space-28); line-height: 1.15; letter-spacing: -.035em; }
.page-reader .report-chapter .ch-range { font-size: var(--tk-space-10); margin: 0; padding: 0; background: transparent; }
.page-reader .report-chapter .ch-summary, .page-reader .report-chapter .ch-notes { font-size: var(--tk-space-16); line-height: 1.7; }
.page-reader .report-chapter .ch-summary { color: var(--tk-ink-2); }
.page-reader .report-takeaways li { font-size: var(--tk-space-16); line-height: 1.65; }
.page-reader .art-embed { border-radius: var(--tk-radius-small); box-shadow: none; }
.page-reader .lec-chat { height: var(--reader-chat-height, min(680px, calc(100vh - 400px))); min-height: 0; min-width: 0; border-radius: var(--tk-radius-small); box-shadow: none; }
.page-reader .lec-chat .chat-head { padding: var(--tk-space-20); background: transparent; border-bottom: 0; }
.page-reader .lec-chat .chat-head .h { flex-wrap: wrap; gap: var(--tk-space-8); font-size: var(--tk-space-18); letter-spacing: -.025em; line-height: 1.3; }
.page-reader .lec-chat .chat-head .h > span:not(.b) { white-space: normal; overflow: visible; }
.page-reader .lec-chat .chat-head .b { display: none; }
.page-reader .lec-chat .chat-head .clr { margin-left: auto; font-size: var(--tk-space-10); }
.page-reader .lec-chat .chat-head .sub { font-size: var(--tk-space-14); line-height: 1.55; margin-top: var(--tk-space-12); }
.page-reader .lec-chat .chat-head, .page-reader .lec-chat .composer { flex-shrink: 0; }
.page-reader .lec-chat .chat-head { max-height: 50%; overflow-y: auto; }
.page-reader .lec-chat .msgs { padding: var(--tk-space-8) var(--tk-space-20) var(--tk-space-20); min-height: 0; min-width: 0; }
.page-reader .lec-chat .empty { flex: 0 0 auto; min-height: 0; min-width: 0; width: 100%; justify-content: flex-start; padding: 0; border: 0; background: transparent; }
.page-reader .lec-chat .empty .ic, .page-reader .lec-chat .empty .t, .page-reader .lec-chat .empty .s { display: none; }
.page-reader .lec-chat .empty .sample { display: grid; grid-template-columns: minmax(0, 1fr); width: 100%; min-width: 0; gap: var(--tk-space-10); margin: 0; }
.page-reader .lec-chat .empty .sample button { min-width: 0; width: 100%; white-space: normal; overflow-wrap: anywhere; padding: var(--tk-space-12); border: 1px solid var(--tk-rule); border-radius: var(--tk-radius-small); background: var(--tk-bg); font-size: var(--tk-space-14); font-weight: 400; line-height: 1.5; text-align: left; color: var(--tk-ink-2); }
.page-reader .lec-chat .empty .sample button::after { content: ' →'; }
.page-reader .lec-chat .composer { padding: var(--tk-space-16); border: 0; }
.page-reader .lec-chat .composer-inner { border: 1px solid var(--tk-rule-strong); border-radius: var(--tk-radius-small); background: transparent; }
.page-reader .lec-chat .composer textarea { font-size: var(--tk-space-14); }
.page-reader .lec-chat .composer .send { background: var(--tk-action-coral); color: var(--tk-action-coral-ink); border-radius: 50%; }
.page-reader .lec-chat .msg.user .bubble { background: var(--tk-action-coral); color: var(--tk-action-coral-ink); }
.page-reader .lec-public-cta { max-width: 1544px; margin: var(--tk-space-16) var(--tk-space-28) 0; border: 1px solid var(--tk-rule); border-radius: var(--tk-radius-small); background: var(--tk-surface-muted); }
.page-reader .lec-panel { border: 1px solid var(--tk-rule); border-radius: var(--tk-radius-small); padding: var(--tk-space-24); background: var(--tk-surface); }
.page-reader .cards-head { gap: var(--tk-space-16); padding: 0 0 var(--tk-space-20); }
.page-reader .cards-head .h2 { font-size: var(--tk-space-28); letter-spacing: -.035em; }
.page-reader .study-card { border-radius: var(--tk-radius-small); box-shadow: none; background: var(--tk-bg); }
.page-reader .study-card .face { padding: var(--tk-space-28); }
.page-reader .task-row, .page-reader .art-card { border-radius: var(--tk-radius-small); box-shadow: none; }
.page-reader .lec-not-done { max-width: 720px; padding: 0 var(--tk-space-24); margin: var(--tk-space-40) auto calc(var(--tk-space-40) * 2); }
.page-reader .failure-block, .page-reader .restart-card, .page-reader .awaiting-card { border-radius: var(--tk-radius-small); box-shadow: none; padding: var(--tk-space-28); }
.page-reader .failure-block { background: var(--tk-danger-soft); }
.page-reader .lec-not-done .prog-card { border-radius: var(--tk-radius-small); box-shadow: none; }
.page-reader .progress-failure-lead { margin: var(--tk-space-16) 0 0; color: var(--tk-ink-2); font-size: var(--tk-space-16); line-height: 1.6; }
.page-reader .awaiting-card .awaiting-reset { margin-top: var(--tk-space-20); padding-top: var(--tk-space-16); border-top: 1px solid var(--tk-rule); font-size: var(--tk-space-14); color: var(--tk-ink-3); }
.page-reader .awaiting-offers { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, calc(var(--tk-space-40) * 4)), 1fr)); gap: var(--tk-space-12); }
.page-reader .awaiting-offer { display: flex; flex-direction: column; min-width: 0; gap: var(--tk-space-8); padding: var(--tk-space-16); border: 1px solid var(--tk-rule-strong); border-radius: var(--tk-radius-small); background: var(--tk-surface); color: var(--tk-ink); text-decoration: none; overflow-wrap: anywhere; }
.page-reader .awaiting-offer:hover { border-color: var(--tk-ink-3); background: var(--tk-surface-muted); }
.page-reader .awaiting-offer:focus-visible { outline: var(--tk-space-2) solid var(--tk-coral-ink); outline-offset: var(--tk-space-4); }
.page-reader .awaiting-offer-pack { background: var(--tk-mint-soft); border-color: var(--tk-mint-ink); }
.page-reader .awaiting-offer-kind { color: var(--tk-ink-3); font-size: var(--tk-space-10); line-height: 1.4; }
.page-reader .awaiting-offer-title { font-size: var(--tk-space-18); line-height: 1.25; font-weight: 650; letter-spacing: -.02em; }
.page-reader .awaiting-offer-detail { color: var(--tk-ink-2); font-size: var(--tk-space-12); line-height: 1.5; }
.page-reader .awaiting-offer-price { margin-top: auto; padding-top: var(--tk-space-12); font-size: var(--tk-space-14); font-weight: 650; line-height: 1.4; }
.page-reader .awaiting-offer-action { display: flex; align-items: baseline; justify-content: space-between; gap: var(--tk-space-8); color: var(--tk-coral-ink); font-size: var(--tk-space-12); line-height: 1.5; }
@media (max-width: 600px) {
  .page-reader .awaiting-quota { padding: var(--tk-space-20); }
  .page-reader .awaiting-offers { grid-template-columns: minmax(0, 1fr); }
  .page-reader .awaiting-offer { display: grid; grid-template-columns: minmax(0, 1fr) auto; column-gap: var(--tk-space-12); }
  .page-reader .awaiting-offer-kind, .page-reader .awaiting-offer-title { grid-column: 1; }
  .page-reader .awaiting-offer-detail { grid-column: 1 / -1; }
  .page-reader .awaiting-offer-price { grid-column: 2; grid-row: 1 / span 2; align-self: center; max-width: calc(var(--tk-space-40) * 2); padding-top: 0; margin-top: 0; text-align: right; }
  .page-reader .awaiting-offer-action { grid-column: 1 / -1; padding-top: var(--tk-space-4); }
}
@media (max-width: 1250px) and (min-width: 901px) {
  .page-reader .lec-shell { grid-template-columns: minmax(0, 1fr) 260px !important; gap: var(--tk-space-16); }
  .page-reader .lec-chat { position: sticky !important; max-height: calc(100vh - var(--tk-space-24) * 2) !important; }
  .page-reader .lec-toc { grid-column: 1 / -1; order: -1; max-height: 240px !important; }
  .page-reader .lec-toc .toc-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-reader .lec-shell:not([data-active=notes]) .lec-panel { grid-column: 1; }
  .page-reader .lec-head .top { grid-template-columns: 120px minmax(0, 1fr); }
  .page-reader .reader-cover { width: 120px; }
}
@media (max-width: 900px) {
  .page-reader .lec-head { position: relative; backdrop-filter: none; padding: var(--tk-space-20) !important; }
  .page-reader .lec-head .crumbs-inline { padding-right: var(--tk-space-32); min-height: 0; font-size: var(--tk-space-12) !important; margin-bottom: var(--tk-space-20) !important; }
  .page-reader .lec-head .top { display: grid; grid-template-columns: var(--tk-space-40) minmax(0, 1fr); gap: var(--tk-space-16) !important; align-items: start; }
  .page-reader .reader-cover { width: var(--tk-space-40); aspect-ratio: 3 / 4; align-items: start; }
  .page-reader .reader-cover img { height: auto; border-radius: var(--tk-radius-xsmall); }
  .page-reader .reader-paper { width: var(--tk-space-40); padding: var(--tk-space-8); aspect-ratio: 3 / 4; }
  .page-reader .reader-paper-label, .page-reader .reader-paper-mark { display: none; }
  .page-reader .reader-paper-line { margin-top: var(--tk-space-8); }
  .page-reader .lec-title { font-size: var(--tk-space-24) !important; line-height: 1.18 !important; letter-spacing: -.035em; }
  .page-reader .lec-meta { grid-column: 1 / -1; margin-top: var(--tk-space-14); font-size: var(--tk-space-10); }
  .page-reader .lec-meta .chip { font-size: var(--tk-space-10); }
  .page-reader .lec-head .lec-more { display: grid; top: var(--tk-space-12); right: var(--tk-space-12); }
  .page-reader .lec-tabs { padding-inline: var(--tk-space-20); gap: var(--tk-space-16); }
  .page-reader .lec-tabs button { font-size: var(--tk-space-14); padding: var(--tk-space-12) 0; }
  .page-reader .lec-tabs button .n { display: none; }
  .page-reader .lec-shell { padding: var(--tk-space-20) var(--tk-space-16) calc(var(--tk-space-40) * 3 + env(safe-area-inset-bottom)) !important; }
  .page-reader .lec-report { padding: var(--tk-space-24) var(--tk-space-20) !important; border-radius: var(--tk-radius-small) !important; }
  .page-reader .lec-report h2.report-title { font-size: var(--tk-space-28) !important; margin-bottom: var(--tk-space-20) !important; }
  .page-reader .report-tldr { padding: var(--tk-space-14) var(--tk-space-16) !important; border-radius: var(--tk-radius-small) !important; }
  .page-reader .report-tldr p { font-size: var(--tk-space-16) !important; }
  .page-reader .report-section .h2 { font-size: var(--tk-space-20) !important; }
  .page-reader .report-chapter h3 { font-size: var(--tk-space-24) !important; }
  .page-reader .report-chapter .ch-n { font-size: var(--tk-space-12) !important; }
  .page-reader .report-chapter .ch-summary, .page-reader .report-chapter .ch-notes { font-size: var(--tk-space-16) !important; line-height: 1.7 !important; }
  .page-reader .lec-panel { padding: var(--tk-space-20); }
  .page-reader .cards-actions { flex-wrap: wrap; gap: var(--tk-space-10); }
  .page-reader .lec-pills { bottom: calc(var(--tk-space-16) + env(safe-area-inset-bottom)); }
  .page-reader .lec-pills .group { background: var(--tk-surface); border: 1px solid var(--tk-rule-strong); box-shadow: var(--shadow); }
  .page-reader .lec-pills .pill { color: var(--tk-ink); }
  .page-reader .lec-pills .pill.cta { background: var(--tk-action-coral); color: var(--tk-action-coral-ink); }
  .page-reader .lec-pills .sep { background: var(--tk-rule-strong); }
  .page-reader .sheet.sheet-chat .lec-chat { display: flex !important; border: 0; border-radius: 0; height: 100%; max-height: none !important; }
  .page-reader .sheet.sheet-chat .lec-chat .empty { padding-top: var(--tk-space-20); }
  .page-reader .sheet-lec-actions .action-row .body { display: block; flex: 1; min-width: 0; }
  .page-reader .sheet-lec-actions .action-row .t { display: block; font-size: var(--tk-space-14); font-weight: 600; line-height: 1.4; }
  .page-reader .sheet-lec-actions .action-row .s { display: block; margin-top: var(--tk-space-4); font-size: var(--tk-space-12); line-height: 1.4; color: var(--tk-ink-3); }
  .page-reader .sheet-lec-actions .action-row .ic, .page-reader .sheet-lec-actions .action-row .chev { flex: none; }
  .page-reader .lec-public-cta { margin: var(--tk-space-12) var(--tk-space-16) 0; padding: var(--tk-space-12); font-size: var(--tk-space-12); }
  .page-reader .lec-not-done { margin-block: var(--tk-space-24) calc(var(--tk-space-40) * 2); padding-inline: var(--tk-space-16); }
}
@media (prefers-reduced-motion: reduce) { .page-reader *, .page-reader *::before, .page-reader *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }

.page-reader .prog-card { background: var(--tk-surface); border: 1px solid var(--tk-rule); border-radius: var(--tk-radius-small); padding: var(--tk-space-28); margin-bottom: var(--tk-space-16); }
.page-reader .prog-card h3 { font-size: var(--tk-space-20); font-weight: 700; letter-spacing: -.03em; margin: 0 0 var(--tk-space-20); }
.page-reader .progress-overview { text-align: center; padding-block: var(--tk-space-28); }
.page-reader .progress-overview h3 { font-size: var(--tk-space-32); }
.progress-illustration { display: flex; align-items: center; justify-content: center; gap: var(--tk-space-6); height: calc(var(--tk-space-32) * 2); margin-bottom: var(--tk-space-16); }
.progress-illustration span { width: var(--tk-space-4); border-radius: var(--tk-radius-xsmall); background: var(--tk-action-coral); }
.progress-illustration span:nth-child(n+10) { background: var(--tk-rule-strong); }
.progress-status { display: flex; justify-content: center; align-items: center; gap: var(--tk-space-12); margin-bottom: var(--tk-space-16); }
.page-reader .status-pill { display: inline-flex; align-items: center; gap: var(--tk-space-8); font-size: var(--tk-space-14); color: var(--tk-ink-2); padding: var(--tk-space-6) var(--tk-space-12); border-radius: var(--tk-space-32); background: var(--tk-surface-muted); }
.page-reader .status-pill.processing { background: var(--tk-coral-soft); color: var(--tk-coral-ink); }
.page-reader .status-pill.done { background: var(--tk-mint-soft); color: var(--tk-mint-ink); }
.page-reader .status-pill.failed { background: var(--tk-danger-soft); color: var(--tk-danger-ink); }
.page-reader .status-pill .dotp { width: var(--tk-space-6); height: var(--tk-space-6); border-radius: 50%; background: currentColor; }
.page-reader .prog-track { height: var(--tk-space-8); background: var(--tk-rule); border-radius: var(--tk-space-20); overflow: hidden; margin: var(--tk-space-20) 0 var(--tk-space-12); }
.page-reader .prog-track .fill { height: 100%; background: var(--tk-action-coral); border-radius: inherit; }
.page-reader .prog-meta { display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--tk-space-8); font-size: var(--tk-space-12); color: var(--tk-ink-3); }
.page-reader .prog-meta b { color: var(--tk-ink); }
.page-reader .step-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--tk-space-8); }
.page-reader .step-row { display: grid; grid-template-columns: var(--tk-space-28) minmax(0, 1fr) auto; align-items: start; gap: var(--tk-space-16); padding: var(--tk-space-12); border-radius: var(--tk-radius-small); }
.page-reader .step-row .ind { width: var(--tk-space-24); height: var(--tk-space-24); border-radius: 50%; display: grid; place-items: center; border: 1px solid var(--tk-rule-strong); color: var(--tk-ink-3); font-size: var(--tk-space-12); }
.page-reader .step-row.ok .ind { color: var(--tk-mint-ink); background: var(--tk-mint-soft); border-color: var(--tk-mint-soft); }
.page-reader .step-row.running { background: var(--tk-coral-soft); }
.page-reader .step-row.running .ind { color: var(--tk-action-coral-ink); background: var(--tk-action-coral); border-color: var(--tk-action-coral); }
.page-reader .step-row.failed .ind { color: var(--tk-danger-ink); background: var(--tk-danger-soft); }
.page-reader .step-label { font-size: var(--tk-space-14); line-height: 1.6; }
.page-reader .step-sub, .page-reader .step-meta { font-size: var(--tk-space-12); color: var(--tk-ink-3); }
.page-reader .step-row.waiting { color: var(--tk-ink-3); }
.progress-back { text-align: center; margin-top: var(--tk-space-24); font-size: var(--tk-space-14); }
.page-reader .progress-steps { margin-top: var(--tk-space-24); padding-top: var(--tk-space-20); border-top: 1px solid var(--tk-rule); text-align: left; }
.page-reader .progress-failed h3 { font-size: var(--tk-space-24); margin-bottom: 0; }
.page-reader .progress-failed .progress-steps { margin-top: var(--tk-space-16); padding-top: var(--tk-space-12); }
.page-reader .progress-failed .step-row { padding-block: var(--tk-space-8); }
@media (max-width: 640px) {
  .page-reader .prog-card { padding: var(--tk-space-24) var(--tk-space-20); }
  .page-reader .progress-overview h3 { font-size: var(--tk-space-28); }
  .page-reader .step-row { grid-template-columns: var(--tk-space-24) minmax(0, 1fr); padding-inline: 0; }
  .page-reader .step-meta { grid-column: 2; }
}