:root {
  --color-primary: #2F9B78;
  --color-primary-dark: #217A5C;
  --color-primary-light: #E7F6F0;
  --color-accent: #E39A3C;
  --color-accent-light: #FFF4E3;
  --color-heading: #1B2A38;
  --color-text: #2C3A48;
  --color-text-secondary: #6B7C8A;
  --color-text-tertiary: #A8B4BE;
  --color-bg: #F3F6F4;
  --color-surface: #FFFFFF;
  --color-divider: #E4EDE8;
  --color-error: #E15D5D;
  --board: #17352d;
  --chalk: #eef3ee;
  --chalk-dim: #b7c6bc;
  --sidebar-left-width: 220px;
  --sidebar-right-width: 248px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font-family: var(--font);
  color: var(--color-text);
  background: var(--color-bg);
}
.hidden { display: none !important; }
button { font-family: inherit; cursor: pointer; }

.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-left-width) minmax(0, 1fr) var(--sidebar-right-width);
  min-height: 100vh;
  height: 100vh;
  background: var(--color-bg);
}

.sidebar-left,
.sidebar-right {
  background: var(--color-surface);
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 16px;
  height: 100%;
  overflow-y: auto;
}
.sidebar-left { border-right: 1px solid var(--color-divider); }
.sidebar-right { border-left: 1px solid var(--color-divider); }

.sidebar-brand { display: flex; align-items: center; gap: 12px; }
.brand-icon {
  width: 44px; height: 44px; border-radius: 12px;
  background: linear-gradient(145deg, #2F9B78, #1F7A5C);
  color: #fff; font-weight: 700;
  display: grid; place-items: center;
}
.sidebar-brand strong { display: block; font-size: 15px; }
.brand-tagline { display: block; font-size: 12px; color: var(--color-text-secondary); margin-top: 2px; }

.sidebar-nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.sidebar-nav-item {
  display: flex; align-items: center; gap: 10px;
  width: 100%; border: 0; background: none;
  padding: 12px 14px; border-radius: 12px;
  color: var(--color-text-secondary); text-align: left; font-size: 14px;
}
.sidebar-nav-item:hover { background: #f3f7f5; }
.sidebar-nav-item.active,
.sidebar-nav-item.on {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-weight: 700;
  box-shadow: inset 4px 0 0 var(--color-primary);
}
.nav-icon { font-size: 16px; }

.sidebar-stage-progress {
  background: var(--color-primary-light);
  border-radius: 12px;
  padding: 12px;
}
.sidebar-stage-label { font-size: 11px; color: var(--color-text-secondary); margin-bottom: 4px; }
.sidebar-stage-progress strong { display: block; font-size: 13px; }
.sidebar-mini-bar {
  height: 6px; border-radius: 999px; background: #cfe8dc; margin: 8px 0 4px; overflow: hidden;
}
.sidebar-mini-bar i {
  display: block; height: 100%; width: 0; background: var(--color-primary);
}
.sidebar-stage-pct { font-size: 11px; color: var(--color-primary-dark); }

.main-col {
  display: flex; flex-direction: column; min-width: 0;
  background: var(--color-bg);
}
.home-quick {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 12px;
  padding: 12px 20px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-divider);
}
.search-wrap { position: relative; flex: 1 1 260px; min-width: 200px; max-width: 560px; }
#course-search {
  width: 100%; padding: 8px 12px; font: inherit;
  border: 1px solid var(--color-divider); border-radius: 999px; background: #fff;
}
.search-hits {
  position: absolute; left: 0; right: 0; top: calc(100% + 6px);
  z-index: 40; max-height: 360px; overflow: auto;
  padding: 6px; background: #fff;
  border: 1px solid var(--color-divider); border-radius: 12px;
  box-shadow: 0 10px 28px rgba(27, 42, 56, 0.12);
}
.search-hit {
  display: block; width: 100%; text-align: left;
  border: 0; background: #fff; border-radius: 8px; padding: 8px 10px;
}
.search-hit:hover { background: var(--color-primary-light); }
.search-hit strong { display: block; font-size: 13px; }
.search-hit small { color: var(--color-text-secondary); font-size: 11px; }
.search-hit span { display: block; margin-top: 2px; color: var(--color-text-secondary); font-size: 12px; }
.search-empty { margin: 8px 10px; font-size: 13px; color: var(--color-text-secondary); }
.home-quick-title { font-weight: 700; font-size: 14px; }
.home-quick-meta, .note, .kicker, .status, .path-hint {
  color: var(--color-text-secondary); font-size: 13px;
}
.home-quick .status { margin: 0 0 0 auto; }

.main { padding: 18px 20px 28px; overflow: auto; flex: 1; }
.page-header h1, .view h2 { margin: 0 0 6px; font-size: 20px; }

.path-board {
  position: relative;
  min-height: 420px;
  padding: 18px 18px 22px;
  border-radius: 24px;
  background:
    radial-gradient(circle at 8% 18%, rgba(47,155,120,.18), transparent 28%),
    radial-gradient(circle at 92% 12%, rgba(47,155,120,.14), transparent 26%),
    radial-gradient(circle at 86% 88%, rgba(34,120,88,.16), transparent 30%),
    linear-gradient(180deg, #e7f4ec 0%, #f7fbf8 40%, #eef6f1 100%);
  border: 8px solid #c8e4d4;
  box-shadow: 0 10px 28px rgba(27, 42, 56, 0.08);
}
.path-board::before,
.path-board::after {
  content: "";
  position: absolute;
  width: 88px; height: 88px;
  background: radial-gradient(circle at 30% 30%, #7dcc9a, #2f9b78 62%, transparent 64%);
  opacity: 0.35;
  pointer-events: none;
}
.path-board::before { top: -18px; left: -12px; }
.path-board::after { bottom: -16px; right: -10px; }

.path-top {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 12px; position: relative; z-index: 1;
}
.section-label { font-size: 13px; color: var(--color-text-secondary); font-weight: 600; }
.path-badge {
  background: #fff; border-radius: 999px; padding: 4px 10px;
  font-size: 12px; color: var(--color-primary-dark); font-weight: 700;
  box-shadow: 0 2px 8px rgba(27,42,56,.06);
}

.chapter-btns {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(168px, 1fr));
  gap: 10px;
  position: relative;
  z-index: 1;
}
.chapter-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  min-height: 92px;
  padding: 14px 14px 12px;
  border: 1px solid #d7e8dd;
  background: #fff;
  border-radius: 14px;
  text-align: left;
  color: inherit;
  box-shadow: 0 2px 8px rgba(27, 42, 56, 0.05);
}
.chapter-btn:hover { border-color: var(--color-primary); }
.chapter-btn.done {
  background: var(--color-primary-light);
  border-color: #b7ddc8;
}
.chapter-btn.current {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}
.chapter-btn .n {
  font-size: 12px;
  font-weight: 800;
  color: var(--color-primary-dark);
}
.chapter-btn strong { font-size: 15px; line-height: 1.35; }
.chapter-btn small { color: var(--color-text-secondary); font-size: 12px; }
.path-hint { margin: 14px 4px 0; position: relative; z-index: 1; }
.note-body { margin: 10px 0 0; color: var(--color-text); font-size: 14px; line-height: 1.7; }
.note-body p { margin: 0 0 10px; }
.note-body.is-edit {
  min-height: 88px; padding: 10px 12px;
  border: 1px dashed #d5e4db; border-radius: 10px; outline: none;
}
.note-body.is-edit:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px var(--color-accent-light); }
.note-body mark, .note-composer mark {
  padding: 0 2px; border-radius: 2px; background: #ffe58a;
}
mark.hl-yellow { background: #ffe58a !important; }
mark.hl-green { background: #b7eb8f !important; }
mark.hl-blue { background: #91d5ff !important; }
mark.hl-pink { background: #ffadd2 !important; }
mark.hl-orange { background: #ffd591 !important; }
mark.hl-purple { background: #d3adf7 !important; }
mark.hl-cyan { background: #87e8de !important; }
mark.hl-red { background: #ffa39e !important; }
.note-composer-wrap { margin: 0 0 10px; }
.hl-bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  margin: 0 0 8px; padding: 8px 10px;
  border: 1px solid var(--color-divider); border-radius: 10px; background: var(--color-surface);
}
.hl-bar-lab { font-size: 12px; font-weight: 700; color: var(--color-text-secondary); }
.hl-popover {
  position: fixed;
  z-index: 1200;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--color-divider);
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.14);
  max-width: min(96vw, 420px);
}
.hl-popover.hidden { display: none; }
.hl-palette { display: flex; flex-wrap: wrap; gap: 6px; }
.hl-swatch {
  width: 22px; height: 22px; border-radius: 999px; border: 2px solid #fff;
  background: var(--hl); box-shadow: 0 0 0 1px rgba(0,0,0,0.18);
  padding: 0; cursor: pointer;
}
.hl-swatch.on { box-shadow: 0 0 0 2px var(--color-primary); transform: scale(1.08); }
.note-composer {
  min-height: 160px; max-height: 360px; overflow: auto;
  padding: 12px 14px; border: 1px solid var(--color-divider); border-radius: 10px;
  background: var(--color-surface); color: var(--color-text); font-size: 14px; line-height: 1.7;
  outline: none; white-space: pre-wrap;
}
.note-composer:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px var(--color-accent-light); }
.note-composer:empty:before {
  content: attr(data-placeholder);
  color: var(--color-text-tertiary); pointer-events: none;
}
.edit-tools { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 10px 0 0; }

.sec-pdf-fold {
  margin: 10px 0 0;
  border: 1px solid var(--color-divider);
  border-radius: 12px;
  background: color-mix(in srgb, var(--color-surface) 96%, #fff);
  overflow: hidden;
}
.sec-pdf-fold > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  font-size: 13px;
  color: var(--color-text-secondary);
  user-select: none;
}
.sec-pdf-fold > summary::-webkit-details-marker { display: none; }
.sec-pdf-fold > summary::before {
  content: '▸';
  margin-right: 6px;
  color: var(--color-primary);
  transition: transform 0.15s ease;
}
.sec-pdf-fold[open] > summary::before { transform: rotate(90deg); }
.sec-pdf-fold[open] > summary {
  border-bottom: 1px solid var(--color-divider);
  background: color-mix(in srgb, var(--color-primary-light) 55%, #fff);
}
.sec-pdf-fold-title { font-weight: 650; color: var(--color-text); }
.sec-pdf-fold-hint { font-size: 12px; color: var(--color-text-tertiary); }
.sec-pdf-fold-check { padding: 8px 12px 0; }
.sec-pdf-fold .page-hl-wrap { margin: 0; }
.sec-pdf-fold .pdf-pages { padding: 10px 12px 12px; }
.page-hl-dock {
  position: fixed;
  left: calc(var(--sidebar-left-width) + 16px);
  right: calc(var(--sidebar-right-width) + 16px);
  bottom: 16px;
  z-index: 10000;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 0;
  padding: 10px 14px;
  border: 1px solid var(--color-divider);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(10px);
  pointer-events: auto;
}
.page-hl-dock.hidden { display: none !important; }
.page-hl-dock.is-on {
  border-color: color-mix(in srgb, var(--color-primary) 50%, var(--color-divider));
  box-shadow: 0 16px 44px color-mix(in srgb, var(--color-primary) 24%, rgba(0, 0, 0, 0.18));
}
.page-hl-dock .hl-palette {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.page-hl-dock .hl-palette[hidden] { display: none !important; }
.page-hl-dock-meta {
  font-size: 12px;
  color: var(--color-muted, #667);
  max-width: min(28vw, 220px);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
#page-hl-dock-toggle.on {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
#page-hl-dock-notes {
  flex: 0 0 auto;
}
@media (max-width: 980px) {
  .page-hl-dock {
    left: 12px;
    right: 12px;
  }
}
@media (max-width: 720px) {
  .page-hl-dock-meta { display: none; }
}
.pdf-pages {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-bottom: 88px;
}
.pdf-pages-loading,
.pdf-pages-error {
  margin: 0;
  padding: 14px 16px;
  border: 1px dashed color-mix(in srgb, var(--color-primary) 35%, transparent);
  background: color-mix(in srgb, var(--color-primary) 6%, transparent);
  color: var(--color-muted, #667);
  font-size: 13px;
}
.pdf-pages-error { border-color: #c45; color: #a33; }
.pdf-page {
  margin: 0;
  padding: 0;
  background: #fff;
  border: 1px solid color-mix(in srgb, var(--color-text) 12%, transparent);
  overflow: hidden;
}
.pdf-page .page-media {
  position: relative;
  display: block;
  width: 100%;
  line-height: 0;
}
.pdf-page .page-media img {
  display: block;
  width: 100%;
  height: auto;
  max-height: none;
  object-fit: contain;
  background: #fff;
  user-select: none;
  -webkit-user-drag: none;
}
.pdf-page figcaption {
  margin: 0;
  padding: 6px 10px;
  font-size: 12px;
  line-height: 1.4;
  color: var(--color-muted, #667);
  background: color-mix(in srgb, var(--color-text) 4%, transparent);
  border-top: 1px solid color-mix(in srgb, var(--color-text) 8%, transparent);
}
.edit-hint { font-size: 12px; color: var(--color-text-secondary); }

.right-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: 16px;
  padding: 16px;
}
.right-card-title { font-size: 13px; font-weight: 700; margin-bottom: 12px; }
.ring-wrap { position: relative; width: 132px; height: 132px; margin: 0 auto 8px; }
.ring { width: 132px; height: 132px; transform: rotate(-90deg); }
.ring-bg { fill: none; stroke: #e6eee9; stroke-width: 10; }
.ring-fg {
  fill: none; stroke: var(--color-primary); stroke-width: 10;
  stroke-linecap: round; stroke-dasharray: 314; stroke-dashoffset: 314;
}
.ring-num {
  position: absolute; inset: 0; display: grid; place-items: center;
  font-weight: 800; color: var(--color-primary);
}
.ring-num b { font-size: 32px; line-height: 1; }
.ring-num span { font-size: 14px; color: var(--color-text-secondary); font-weight: 500; }
.right-muted { font-size: 12px; color: var(--color-text-secondary); margin: 6px 0 0; }
.goal-line { font-size: 15px; font-weight: 700; margin: 0; }
.right-actions { display: grid; gap: 8px; margin-top: 12px; }

.btn-primary, .btn-ghost, .btn {
  border: 0; border-radius: 999px; padding: 10px 14px; font-size: 13px; font-weight: 700;
}
.btn-primary, .btn { background: var(--color-primary); color: #fff; }
.btn-primary:hover, .btn:hover { background: var(--color-primary-dark); }
.btn-ghost, .btn.ghost {
  background: #fff; color: var(--color-text);
  border: 1px solid var(--color-divider);
}

.mat-grid { display: grid; gap: 10px; margin-top: 14px; }
.product, .mat-card {
  text-align: left; padding: 14px; border-radius: 14px;
  background: #fff; border: 1px solid var(--color-divider);
}
.mat-card em { font-style: normal; font-size: 12px; color: var(--color-primary-dark); font-weight: 700; }
.mat-card em.wait { color: #854d0e; }
.mat-card strong, .product h3 { display: block; margin: 4px 0; }
.mat-card p, .product p { margin: 0; color: var(--color-text-secondary); font-size: 13px; }

.form {
  max-width: 420px; background: #fff; border: 1px solid var(--color-divider);
  border-radius: 14px; padding: 16px;
}
.form label { display: block; margin: 10px 0 6px; font-size: 13px; color: var(--color-text-secondary); }
.form input { width: 100%; padding: 9px 10px; border: 1px solid var(--color-divider); border-radius: 8px; }
.actions { display: flex; gap: 8px; margin-top: 12px; }
.status.error { color: var(--color-error); }
.toolbar { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; margin-bottom: 16px; }
.seg { display: flex; background: #e7eee9; border-radius: 999px; padding: 3px; }
.seg-btn { border: 0; background: transparent; padding: 6px 12px; border-radius: 999px; color: var(--color-text-secondary); }
.seg-btn.on { background: #fff; color: var(--color-text); }

.tree-box details { margin: 0 0 8px; }
.tree-box summary { cursor: pointer; list-style: none; padding: 8px 4px; font-weight: 700; }
.tree-box summary::-webkit-details-marker { display: none; }
.sec-block, .card, .quiz-item {
  background: #fff; border: 1px solid var(--color-divider);
  border-radius: 14px; padding: 14px; margin-bottom: 10px;
}
.sec-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.sec-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px; }
.sec-actions-inline .btn-primary { display: none; }
.my-mark {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px;
  margin: 8px 0 4px;
}
.my-mark-lab { font-size: 12px; color: var(--color-text-secondary); margin-right: 4px; }
.mark-btn {
  border: 1px solid var(--color-divider); background: #fff; color: var(--color-text);
  border-radius: 999px; padding: 3px 9px; font-size: 12px;
}
.mark-btn.on {
  background: var(--color-primary-light); border-color: var(--color-primary);
  color: var(--color-primary-dark); font-weight: 700;
}
.mark-btn.ghost { color: var(--color-text-secondary); }
.sec-head h2 { margin: 0; font-size: 16px; }
.checklist { margin: 8px 0 0; padding: 0 0 0 18px; color: var(--color-text-secondary); font-size: 13px; }
.chapter-row {
  display: flex; justify-content: space-between; width: 100%;
  text-align: left; margin: 0 0 6px; padding: 10px 12px;
  border: 1px solid var(--color-divider); background: #fff; border-radius: 10px;
}
.score-pill { display: inline-block; min-width: 2.2rem; padding: 1px 7px; border-radius: 999px; font-size: 12px; font-weight: 700; text-align: center; }
.tone-100, .tone-100 .score-pill { color: #14532d; background: #d8f3df; }
.tone-80, .tone-80 .score-pill { color: #854d0e; background: #f8e7b0; }
.tone-70, .tone-70 .score-pill { color: #9a3412; background: #f6d0ae; }
.tone-60, .tone-60 .score-pill { color: #7c2d12; background: #f0b48a; }
.tone-low, .tone-low .score-pill { color: #fff; background: #7f1d1d; }
.score-banner { margin: 0 0 12px; padding: 10px 12px; border-radius: 10px; font-weight: 700; }

.room { max-width: none; }
.stage { display: grid; grid-template-columns: 1fr; min-height: 520px; }
.board-shell {
  background: var(--board); border-radius: 16px; min-height: 520px;
  display: flex; flex-direction: column; color: var(--chalk);
}
.board-bar { display: flex; justify-content: space-between; padding: 12px 16px 4px; color: var(--chalk-dim); font-size: 12px; }
.board { flex: 1; padding: 6px 16px 10px; }
.board h2 { margin: 0 0 14px; color: #fff; font-size: 22px; }
.point {
  display: grid; grid-template-columns: 1.2rem 1fr; gap: 2px 8px;
  margin: 0 0 8px; padding: 8px 10px; border-radius: 10px;
  opacity: 1; border: 1px solid transparent;
  transition: background .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.point.active {
  background: rgba(255, 231, 168, 0.14);
  border-color: rgba(255, 231, 168, 0.35);
  box-shadow: inset 3px 0 0 #ffe7a8;
}
.point.active .title { color: #ffe7a8; }
.point.active .detail { color: #f4efe2; }
.point .n { color: #e2c36a; font-weight: 700; }
.point .title { margin: 0; font-weight: 650; font-size: 16px; }
.point .detail { grid-column: 2; margin: 0; color: var(--chalk-dim); font-size: 15px; line-height: 1.55; }
.caption { margin: 0; padding: 10px 16px 14px; border-top: 1px solid rgba(255,255,255,.08); min-height: 3.2rem; }
.player { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.workspace-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
#btn-class-back { margin-right: 4px; }
.ask-dock {
  margin-top: 12px; padding: 12px 14px 14px;
  background: var(--color-surface); border: 1px solid var(--color-divider);
  border-radius: 14px;
}
.ask-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.ask-head strong { font-size: 14px; }
.ask-ctx { margin: 6px 0 8px; font-size: 12px; color: var(--color-text-secondary); }
.ask-chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 8px; }
.ask-chips button {
  border: 1px solid var(--color-divider); background: var(--color-primary-light);
  color: var(--color-primary-dark); border-radius: 999px; padding: 4px 10px; font-size: 12px;
}
.ask-log {
  max-height: 220px; overflow: auto; display: flex; flex-direction: column; gap: 8px;
  margin: 0 0 8px;
}
.ask-msg { margin: 0; padding: 8px 10px; border-radius: 10px; font-size: 13px; line-height: 1.55; }
.ask-msg.user { background: var(--color-primary-light); align-self: flex-end; }
.ask-msg.ai { background: #f4f7f5; }
.ask-form { display: flex; gap: 8px; }
.ask-form input {
  flex: 1; border: 1px solid var(--color-divider); border-radius: 10px;
  padding: 8px 10px; font: inherit;
}
.note-dock {
  margin-top: 12px; padding: 12px 14px 56px;
  background: var(--color-bg); border: 1px solid var(--color-divider);
  border-radius: 14px;
  color: var(--color-text);
  position: relative;
}
.note-dock .ask-head strong { color: var(--color-heading); }
.note-dock .ask-ctx, .note-dock .note, .note-dock .status { color: var(--color-text-secondary); }
.note-dock textarea {
  width: 100%; min-height: 160px; margin: 8px 0; padding: 8px 10px; resize: vertical;
  border: 1px solid var(--color-divider); border-radius: 10px; font: inherit;
  background: var(--color-surface); color: var(--color-text);
}
.note-topics { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 8px 0; }
.note-topic {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 2px solid var(--topic-ring, var(--color-divider));
  background: var(--color-surface);
  border-radius: 999px;
  padding: 5px 12px 5px 9px;
  font-size: 12px;
  color: var(--color-text);
  max-width: 156px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  box-shadow: 0 1px 0 color-mix(in srgb, var(--topic-ring, #888) 18%, transparent);
}
.note-topic span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.note-topic-swatch {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--dot, var(--color-primary));
  flex: 0 0 auto;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--dot, #888) 55%, #fff);
}
.note-topic-colored {
  border-color: var(--topic-ring, var(--dot));
  background: color-mix(in srgb, var(--dot) 22%, #fff);
}
.note-topic-colored.on {
  background: color-mix(in srgb, var(--dot) 42%, #fff);
  border-color: var(--topic-ring, var(--dot));
  border-width: 2px;
  color: color-mix(in srgb, var(--dot) 52%, #1f2933);
  font-weight: 700;
  box-shadow:
    0 0 0 2px color-mix(in srgb, var(--topic-ring, var(--dot)) 28%, transparent),
    0 2px 8px color-mix(in srgb, var(--topic-ring, var(--dot)) 22%, transparent);
}
.note-topic-summary.on { border-color: #8B7FD4; }
.note-topic-point.on { border-color: var(--topic-ring, var(--dot)); }
.note-topic-dot.on { border-color: var(--topic-ring, var(--dot)); }
#note-dock[data-topic-kind="summary"] .note-list-bar { display: none !important; }
.note-topic-summary { font-weight: 600; }
.note-topic-point { font-weight: 600; }
.note-topic-dot { font-weight: 600; }
.note-topic-add {
  width: 28px; height: 28px; padding: 0;
  border: 1px dashed var(--color-primary); border-radius: 999px;
  background: var(--color-surface); color: var(--color-primary);
  font-size: 18px; font-weight: 700; line-height: 1; cursor: pointer;
  flex: 0 0 auto;
}
.note-topic-add:hover { background: var(--color-primary-light); }
.note-topic-chip {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  max-width: 176px;
}
.note-topic-chip .note-topic { max-width: 148px; }
.note-topic-del {
  width: 18px;
  height: 18px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  flex: 0 0 auto;
}
.note-topic-del:hover {
  background: #ffe8e8;
  color: #c0392b;
}
.note-file-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.note-tools-fab {
  position: absolute;
  right: 14px;
  bottom: 36px;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(47, 155, 120, 0.35);
  z-index: 2;
}
.note-tools-fab.on {
  background: var(--color-text-secondary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  font-size: 22px;
}
.note-tools-panel {
  margin-top: 10px;
  padding: 12px;
  border: 1px solid var(--color-divider);
  border-radius: 12px;
  background: var(--color-surface);
}
.note-tools-panel.hidden { display: none; }
.note-tools-panel .note-composer { min-height: 72px; }
.note-tools-panel .player { margin-top: 10px; }
.note-dock[data-dot-color] {
  box-shadow: inset 0 3px 0 var(--dot-accent, transparent);
}
.note-dock[data-topic-kind="summary"] {
  background: color-mix(in srgb, var(--dot-accent, transparent) 6%, var(--color-bg, #f3f6f4));
}
.note-dock[data-topic-kind="point"],
.note-dock[data-topic-kind="dot"] {
  background: color-mix(in srgb, var(--dot-accent, transparent) 5%, var(--color-bg, #f3f6f4));
}
.point { cursor: pointer; }
.note-list { display: flex; flex-direction: column; gap: 10px; }
.note-card {
  margin: 0; padding: 10px; border: 1px solid var(--color-divider);
  border-radius: 10px; background: var(--color-surface);
  color: var(--color-text);
}
.note-card p { margin: 0 0 8px; white-space: pre-wrap; }
.note-card img, .note-card video { display: block; max-width: 100%; max-height: 280px; border-radius: 8px; }
.note-media { position: relative; display: block; max-width: 100%; margin-bottom: 8px; }
.note-media img { width: 100%; height: auto; max-height: 360px; object-fit: contain; background: #111; }
.note-media-missing {
  margin: 0 0 8px;
  padding: 10px 12px;
  border: 1px dashed color-mix(in srgb, var(--color-border) 80%, transparent);
  background: color-mix(in srgb, var(--color-surface) 88%, #c9d6cf);
  color: var(--color-muted, #5a6b63);
  font-size: 0.92rem;
  line-height: 1.45;
}
.note-hl-layer { position: absolute; inset: 0; pointer-events: none; }
.note-media { position: relative; }
.note-media.note-map-media { border-radius: 10px; overflow: hidden; }
.note-media.is-hl { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.note-media.is-hl img { pointer-events: none; user-select: none; }
.note-media.is-hl .note-hl-layer { pointer-events: auto; cursor: crosshair; }
.note-media.is-hl.note-map-media .mindmap { pointer-events: none; user-select: none; }
.note-hl-box {
  position: absolute;
  background: rgba(255, 229, 138, 0.48);
  border: 1px solid rgba(196, 149, 12, 0.55);
  border-radius: 2px;
  pointer-events: auto;
  cursor: pointer;
}
.note-card .note-body { min-height: 56px; margin: 0; }
.note-map-card h3 { margin: 4px 0 10px; font-size: 16px; }
.mindmap { overflow: auto; padding: 10px 6px 14px; max-height: 520px; }
.map-template-bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px;
  margin: 0 0 10px; padding: 8px 10px;
  border: 1px solid var(--color-divider); border-radius: 10px;
  background: var(--color-surface);
}
.map-template-lab { font-size: 12px; font-weight: 700; color: var(--color-text-secondary); flex: 0 0 auto; white-space: nowrap; }
.map-style-lab-split, .map-template-lab.map-style-lab-split {
  margin-left: 4px;
  padding-left: 10px;
  border-left: 1px solid var(--color-divider);
}
.map-template-list { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.map-layout-btn, .map-palette-btn {
  display: inline-flex; align-items: center; gap: 6px;
  border: 2px solid var(--color-divider); background: var(--color-bg);
  border-radius: 999px; padding: 5px 10px; font-size: 12px; color: var(--color-text);
  cursor: pointer;
}
.map-layout-btn.on, .map-layout-btn:hover,
.map-palette-btn.on, .map-palette-btn:hover {
  border-color: var(--color-primary); background: var(--color-primary-light); color: var(--color-primary-dark);
}
.map-palette-dot {
  width: 12px; height: 12px; border-radius: 50%; display: inline-block;
  background: var(--pal, var(--color-primary));
  box-shadow: 0 0 0 1px rgba(0,0,0,0.12);
}
.map-style-bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px;
  margin: 0 0 12px; padding: 8px 10px;
  border: 1px solid var(--color-divider); border-radius: 10px; background: var(--color-surface);
}
.map-style-lab { font-size: 12px; font-weight: 700; color: var(--color-text-secondary); flex: 0 0 auto; white-space: nowrap; }
.map-layout-picks, .map-palette-picks { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.map-template-btn {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--color-divider); background: var(--color-bg);
  border-radius: 999px; padding: 5px 10px; font-size: 12px; color: var(--color-text);
}
.map-template-btn.on, .map-template-btn:hover {
  border-color: var(--color-primary); background: var(--color-primary-light); color: var(--color-primary-dark);
}
.map-template-ico {
  width: 14px; height: 14px; border-radius: 3px; display: inline-block;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
}
.map-ico-board { border-radius: 50%; }
.map-ico-cascade { clip-path: polygon(50% 0, 100% 100%, 0 100%); }
.map-ico-tree { border-radius: 2px; }
.map-ico-cards { box-shadow: 2px 2px 0 #c8e4d4; }
.map-ico-spine { width: 4px; border-radius: 2px; }
.map-ico-pro {
  border-radius: 2px 8px 8px 2px;
  background: linear-gradient(90deg, #2F9B78 0 35%, #3B82C4 35% 65%, #D8893C 65%);
}
.map-style-select-wrap {
  display: block;
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-text-secondary);
}
.map-style-select {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 8px 10px;
  border: 1px solid var(--color-divider);
  border-radius: 10px;
  font: inherit;
  background: var(--color-surface);
  color: var(--color-text);
}
.map-pal-mint { background: linear-gradient(135deg, #2F9B78, #3B82C4); }
.map-pal-ocean { background: linear-gradient(135deg, #2471A3, #17A589); }
.map-pal-sunset { background: linear-gradient(135deg, #D35400, #E67E22); }
.map-pal-violet { background: linear-gradient(135deg, #7D3C98, #9B59B6); }
.map-pal-slate { background: linear-gradient(135deg, #34495E, #566573); }
.map-pal-rose { background: linear-gradient(135deg, #C0392B, #E74C3C); }
.mindmap-inline-edit { padding: 12px; }
.mindmap-inline-edit .mm-editable-node { margin: 6px 0 6px 12px; }
.mindmap-inline-edit .mm-editable-children { margin-left: 14px; padding-left: 10px; border-left: 2px solid color-mix(in srgb, var(--map-root, var(--color-primary)) 35%, transparent); }
.mindmap-inline-edit .mm-editable-label {
  display: inline-block;
  min-width: 2em;
  padding: 4px 8px;
  border-radius: 8px;
  border: 1px dashed color-mix(in srgb, var(--map-root, var(--color-primary)) 55%, #ccc);
  background: #fff;
  outline: none;
  cursor: text;
}
.mindmap-inline-edit .mm-editable-label:focus {
  border-style: solid;
  border-color: var(--map-root, var(--color-primary));
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--map-root, var(--color-primary)) 20%, transparent);
}
.mm-node-tools { display: inline-flex; gap: 4px; margin-left: 6px; vertical-align: middle; }
.mm-node-btn {
  border: 1px solid var(--color-divider);
  background: var(--color-surface);
  border-radius: 6px;
  padding: 0 6px;
  font-size: 11px;
  line-height: 18px;
  cursor: pointer;
  color: var(--color-text-secondary);
}
.mm-node-btn:hover { border-color: var(--color-primary); color: var(--color-primary-dark); }
.mm-node-del:hover { border-color: #c0392b; color: #c0392b; }
.mm-node-drag {
  border: 1px dashed color-mix(in srgb, var(--map-root, var(--color-primary)) 45%, #bbb);
  background: color-mix(in srgb, var(--map-root, var(--color-primary)) 8%, #fff);
  border-radius: 6px;
  padding: 0 5px;
  font-size: 11px;
  line-height: 18px;
  cursor: grab;
  color: var(--color-text-secondary);
}
.mm-node-drag:active { cursor: grabbing; }
.mm-editable-node.is-dragging { opacity: 0.55; }
.mm-editable-node.is-drop-target {
  outline: 2px dashed var(--map-root, var(--color-primary));
  outline-offset: 3px;
  background: color-mix(in srgb, var(--map-root, var(--color-primary)) 8%, #fff);
  border-radius: 8px;
}
.mm-editable-drop {
  min-height: 10px;
  margin-top: 4px;
}
.note-map-head { gap: 8px; }
.note-map-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-size: 11px;
  font-weight: 700;
}
.map-summary-panel { margin-top: 0; }
.note-hl-box.is-selected { outline: 2px solid var(--color-primary); outline-offset: 1px; }
.mindmap-pro .mm-pro-root {
  background: linear-gradient(135deg, color-mix(in srgb, var(--map-root, #2F9B78) 75%, #000), var(--map-root, #2F9B78));
}
.map-style-switch { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 10px; }
.map-style-chip {
  border: 1px solid var(--color-divider); background: var(--color-surface);
  border-radius: 999px; padding: 3px 10px; font-size: 12px; color: var(--color-text-secondary);
}
.map-style-chip.on, .map-style-chip:hover {
  background: var(--color-primary); color: #fff; border-color: var(--color-primary);
}

.mm-lab {
  display: inline-block; padding: 6px 10px; border-radius: 10px;
  background: var(--color-primary-light); color: var(--color-primary-dark);
  font-size: 13px; font-weight: 700; line-height: 1.35; max-width: 220px;
}
.mm-lab.mm-d0 { background: var(--color-primary); color: #fff; font-size: 14px; }
.mm-lab.mm-d1 { background: #d7f0e5; }
.mm-lab.mm-d2 { background: #fff4e3; color: #9a5b12; }
.mm-lab.mm-d3 { background: #e8eef8; color: #35507a; }
.mm-lab.mm-d4 { background: #f8e8f1; color: #7a3558; }
.mm-lab.mm-d5, .mm-lab.mm-d6 { background: #f3f6f4; color: var(--color-text); font-weight: 600; font-size: 12px; }

.mindmap-tree .mm-outline-node { display: flex; align-items: flex-start; gap: 10px; margin: 6px 0; }
.mindmap-tree .mm-kids {
  border-left: 2px solid #c8e4d4; padding-left: 12px; margin-left: 4px;
}

.mindmap-cascade { text-align: center; }
.mindmap-cascade .mm-cascade-node {
  display: flex; flex-direction: column; align-items: center; gap: 10px; margin: 0 4px;
}
.mindmap-cascade .mm-cascade-kids {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 16px;
  padding-top: 12px; border-top: 2px solid #c8e4d4; margin-top: 2px;
}

.mindmap-cards .mm-card {
  border: 1px solid var(--color-divider); border-radius: 12px;
  padding: 10px; margin: 0 0 8px; background: #fff;
}
.mindmap-cards .mm-card.mm-d0 { background: linear-gradient(180deg, #e7f6f0, #fff); border-color: #9fd0ba; }
.mindmap-cards .mm-card.mm-d1 { background: #f7fffb; }
.mindmap-cards .mm-card.mm-d2 { background: #fffaf2; }
.mindmap-cards .mm-card.mm-d3 { background: #f5f8fc; }
.mindmap-cards .mm-card-title { font-weight: 700; color: var(--color-heading); margin-bottom: 8px; }
.mindmap-cards .mm-card-kids { display: grid; gap: 8px; }
.mindmap-cards .mm-leaf-tag {
  display: inline-block; font-size: 11px; color: var(--color-text-secondary);
  background: var(--color-bg); border-radius: 999px; padding: 2px 8px;
}

.mindmap-spine .mm-spine { display: grid; grid-template-columns: auto 1fr; gap: 14px; align-items: start; }
.mindmap-spine .mm-spine-root { position: sticky; top: 0; }
.mindmap-spine .mm-spine-rail {
  border-left: 3px solid var(--color-primary); padding-left: 16px;
  display: flex; flex-direction: column; gap: 12px;
}
.mindmap-spine .mm-spine-row { position: relative; padding-left: 4px; }
.mindmap-spine .mm-spine-dot {
  position: absolute; left: -23px; top: 10px;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--color-accent); border: 2px solid #fff;
  box-shadow: 0 0 0 1px var(--color-accent);
}
.mindmap-spine .mm-spine-sub, .mindmap-spine .mm-spine-branch {
  display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; align-items: flex-start;
}
.mindmap-spine .mm-spine-branch {
  flex-direction: column; padding: 8px; border-radius: 10px;
  background: #f7faf8; border: 1px dashed #c8e4d4;
}

.mindmap-board .mm-board {
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: center;
  min-width: 640px;
}
.mindmap-board .mm-board-center { text-align: center; }
.mindmap-board .mm-board-side {
  display: flex; flex-direction: column; gap: 10px;
}
.mindmap-board .mm-board-side.left { align-items: flex-end; }
.mindmap-board .mm-board-side.right { align-items: flex-start; }
.mindmap-board .mm-board-arm {
  display: flex; flex-direction: column; gap: 8px;
  padding: 8px 10px; border-radius: 12px; background: rgba(255,255,255,0.9);
  border: 1px solid var(--color-divider); max-width: 280px;
}
.mindmap-board .mm-board-arm.mm-left { align-items: flex-end; text-align: right; }
.mindmap-board .mm-board-arm.mm-right { align-items: flex-start; text-align: left; }
.mindmap-board .mm-board-sub { display: flex; flex-direction: column; gap: 8px; width: 100%; }
.mindmap-board .mm-board-empty { display: block; min-height: 1px; }

.mindmap-pro { padding: 16px 10px 18px; }
.mm-pro {
  display: flex; align-items: flex-start; gap: 0; min-width: max-content;
}
.mm-pro-root-col { flex-shrink: 0; padding: 8px 10px 8px 4px; }
.mm-pro-root {
  display: inline-block;
  background: linear-gradient(135deg, #1a6b52, #2F9B78);
  color: #fff; font-weight: 800; font-size: 14px;
  padding: 14px 18px; border-radius: 12px;
  box-shadow: 0 4px 16px rgba(47, 155, 120, 0.28);
  max-width: 240px; line-height: 1.4; text-align: center;
}
.mm-pro-main { display: flex; flex-direction: column; gap: 12px; padding: 4px 0 4px 2px; }
.mm-pro-branch { --branch: #3B82C4; position: relative; }
.mm-pro-row { display: flex; align-items: center; gap: 0; min-height: 36px; }
.mm-pro-stem {
  width: 32px; height: 2px; flex-shrink: 0;
  background: var(--branch); border-radius: 1px;
}
.mm-pro-node {
  padding: 8px 12px; border-radius: 8px;
  border: 1.5px solid color-mix(in srgb, var(--branch) 45%, #d0d0d0);
  background: #fff; font-size: 13px; line-height: 1.4;
  max-width: 300px; box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  color: var(--color-heading);
}
.mm-pro-node.mm-pro-l1 {
  border-left: 4px solid var(--branch);
  font-weight: 700;
  background: color-mix(in srgb, var(--branch) 10%, #fff);
}
.mm-pro-node.mm-pro-l2 { font-weight: 600; }
.mm-pro-node.mm-pro-l3, .mm-pro-node.mm-pro-l4 { font-size: 12px; }
.mm-pro-children {
  margin-left: 32px; padding: 4px 0 4px 14px;
  border-left: 2px solid color-mix(in srgb, var(--branch) 30%, transparent);
  display: flex; flex-direction: column; gap: 6px;
}

.map-edit-wrap { margin: 0 0 12px; }
.map-edit-tip { font-size: 12px; color: var(--color-text-secondary); margin: 0 0 8px; }
.map-edit-area {
  width: 100%; min-height: 280px; resize: vertical;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 13px; line-height: 1.55;
  padding: 12px 14px; border-radius: 10px;
  border: 1px solid var(--color-divider);
  background: var(--color-bg); color: var(--color-text);
}
.map-edit-area:focus {
  outline: none; border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-light);
}
.map-edit-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.note-map-card .note-body.is-edit {
  min-height: 48px; margin-top: 10px; padding: 8px 10px;
  border: 1px dashed var(--color-divider); border-radius: 8px;
}

.note-kou-card h3 { margin: 4px 0 10px; font-size: 16px; }
.kou-list { display: flex; flex-direction: column; gap: 10px; margin: 0 0 10px; }
.kou-item {
  border: 1px solid #f0d7a8;
  background: linear-gradient(180deg, #fff8eb 0%, #fff 100%);
  border-radius: 12px;
  padding: 12px 14px;
}
.kou-say {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #9a5b12;
  line-height: 1.35;
}
.kou-meta {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  margin-top: 8px; font-size: 12px;
}
.kou-for { color: var(--color-text-secondary); }
.kou-src {
  display: inline-block; padding: 2px 8px; border-radius: 999px;
  background: #fff4e3; color: #9a5b12; font-weight: 700;
}
.kou-explain {
  margin: 8px 0 0; font-size: 13px; line-height: 1.6; color: var(--color-text);
}
.note-theme-bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  margin: 0 0 10px; padding: 10px;
  border: 1px solid var(--color-divider); border-radius: 10px; background: var(--color-surface);
}
.note-theme-lab { font-size: 12px; font-weight: 700; color: var(--color-text-secondary); }
.note-theme-list { display: flex; flex-wrap: wrap; gap: 6px; }
.settings-theme-list { margin: 0 0 14px; }
.note-theme-btn {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--color-divider); background: var(--color-bg);
  border-radius: 999px; padding: 4px 10px; font-size: 12px; color: var(--color-text);
}
.note-theme-btn i {
  width: 14px; height: 14px; border-radius: 50%;
  background: linear-gradient(135deg, var(--t1), var(--t2));
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.12);
}
.note-theme-btn.on, .note-theme-btn:hover {
  border-color: var(--color-primary); background: var(--color-primary-light); color: var(--color-primary-dark);
}
.note-ocr-lab {
  margin: 8px 0 4px; font-size: 12px; font-weight: 700; color: var(--color-primary-dark);
}
.note-ocr-body {
  min-height: 120px !important;
  border: 1px solid var(--color-primary) !important;
  background: var(--color-primary-light) !important;
  color: var(--color-text);
}
.note-ocr-body.is-empty:not(:focus)::before {
  content: attr(data-placeholder);
  color: var(--color-text-secondary);
  pointer-events: none;
}
.note-ocr-body.note-ocr-flash {
  box-shadow: 0 0 0 3px var(--color-accent-light);
}
.note-ask-row { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 0; }
.note-ask-part {
  border: 1px solid var(--color-divider); background: var(--color-surface);
  color: var(--color-primary-dark); border-radius: 999px;
  padding: 3px 10px; font-size: 12px; cursor: pointer;
}
.note-ask-part:hover { background: var(--color-primary-light); }
.note-ai {
  margin-top: 12px;
  padding: 12px;
  border: 1px solid var(--color-divider);
  border-radius: 10px;
  background: var(--color-bg);
}
.note-ai-head {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}
.note-ai-log {
  max-height: 220px;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 8px;
}
.note-ai-empty { margin: 0; color: var(--color-text-secondary); font-size: 13px; }
.note-ai-msg {
  margin: 0;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.55;
  white-space: pre-wrap;
}
.note-ai-msg.user { align-self: flex-end; background: var(--color-primary-light); max-width: 92%; }
.note-ai-msg.ai { align-self: flex-start; background: var(--color-surface); border: 1px solid var(--color-divider); max-width: 96%; }
.note-ai-compose { display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: end; }
.note-ai-compose textarea {
  width: 100%;
  min-height: 52px;
  resize: vertical;
  border: 1px solid var(--color-divider);
  border-radius: 8px;
  padding: 8px 10px;
  font: inherit;
}
.note-ai-send { white-space: nowrap; height: 40px; }
.btn-ghost.on, .btn-ghost[data-hl].on, #btn-composer-hl.on {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
  font-weight: 700;
}
.note-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: 0 0 8px;
}
.note-head-main {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 0;
}
.note-num-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  padding: 0 8px;
  border-radius: 999px;
  background: var(--color-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  flex-shrink: 0;
}
.note-theme {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-heading);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.note-theme.muted { color: var(--color-text-secondary); font-weight: 600; }
.note-num-wrap {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--color-text-secondary);
  font-weight: 700;
}
.note-num-input {
  width: 52px;
  padding: 4px 6px;
  border: 1px solid var(--color-divider);
  border-radius: 8px;
  font: inherit;
  text-align: center;
}
.note-draggable { position: relative; padding-left: 34px; }
.note-drag-handle {
  position: absolute;
  left: 8px;
  top: 14px;
  width: 22px;
  height: 36px;
  border: 0;
  border-radius: 8px;
  background: var(--color-bg);
  color: var(--color-text-secondary);
  cursor: grab;
  font-size: 14px;
  line-height: 1;
  padding: 0;
}
.note-drag-handle:active { cursor: grabbing; }
.note-draggable.is-dragging { opacity: 0.55; }
.note-draggable.drag-over { outline: 2px dashed var(--color-primary); outline-offset: 2px; }
.note-insert-above, .note-insert-top { font-size: 12px; padding: 4px 10px; }
.note-list-bar { margin: 0 0 10px; }
.note-text-hint {
  margin: 0 0 8px;
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--color-bg);
  color: var(--color-text-secondary);
  font-size: 12px;
}
.note-text-panel { margin-top: 0; }
.sec-draggable { position: relative; padding-left: 34px; }
.sec-drag-handle {
  position: absolute;
  left: 8px;
  top: 18px;
  width: 22px;
  height: 36px;
  border: 0;
  border-radius: 8px;
  background: var(--color-bg);
  color: var(--color-text-secondary);
  cursor: grab;
  font-size: 14px;
  line-height: 1;
  padding: 0;
}
.sec-drag-handle:active { cursor: grabbing; }
.sec-draggable.is-dragging { opacity: 0.55; }
.sec-draggable.drag-over { outline: 2px dashed var(--color-primary); outline-offset: 2px; }
.note-card-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.note-act {
  border: 1px solid var(--color-divider);
  background: #fff;
  border-radius: 999px;
  padding: 6px 12px;
  color: var(--color-text);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}
.note-act:hover { border-color: var(--color-primary); color: var(--color-primary-dark); }
.note-act.primary, .note-act.on.primary {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}
.note-act.on {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}
.note-act.danger:hover { border-color: #e57373; color: #c62828; }
.note-file-btn { display: inline-flex; align-items: center; }
#note-file, #ask-image { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.quiz-item p { margin: 0 0 8px; }
.opt {
  display: block; width: 100%; text-align: left; margin: 0 0 6px; padding: 8px 10px;
  border-radius: 8px; border: 1px solid var(--color-divider); background: #fff;
}
.opt.correct { background: #e5f6ec; border-color: #7dcea0; }
.opt.wrong { background: #fdecea; border-color: #f5b7b1; }
.why { margin: 6px 0 0; font-size: 13px; color: var(--color-primary-dark); }

@media (max-width: 980px) {
  .app-shell { grid-template-columns: 1fr; height: auto; }
  .sidebar-left, .sidebar-right { height: auto; }
  .sidebar-nav { flex-direction: row; flex-wrap: wrap; }
}