/*
 * Onboarding feature showcase, "scenes" arm (views/partials/onboarding-demos/stage.ejs).
 * Self-contained: renders the same inside v2 onboarding (no ui3.css) and v3 onboarding, so the
 * UI v3 token values are copied onto .obd-stage. Each demo is drawn on a fixed 360×400 canvas and
 * scaled to the showcase stage (public/scripts/onboarding-demos.js sets --obd-scale).
 */

.obd-stage {
  --obd-bg: #fafafa;
  --obd-surface: #ffffff;
  --obd-surface-2: #f4f4f5;
  --obd-surface-3: #ececee;
  --obd-line: #e8e8eb;
  --obd-ink: #0b0b0d;
  --obd-ink-2: #3a3a42;
  --obd-ink-3: #6b6b76;
  --obd-ink-4: #a0a0aa;
  --obd-accent: #047857;
  --obd-accent-2: #10b981;
  --obd-accent-soft: #ecfdf5;
  --obd-accent-line: #a7f3d0;
  --obd-accent-ink: #065f46;
  --obd-warn: #b45309;
  --obd-warn-soft: #fffbeb;
  --obd-warn-line: #fde68a;
  --obd-info: #2563eb;
  --obd-info-soft: #eff6ff;
  --obd-violet: #6d28d9;
  --obd-violet-soft: #f5f3ff;
  --obd-rec: #e11d48;
  --obd-r-sm: 6px;
  --obd-r-md: 8px;
  --obd-r-lg: 12px;
  --obd-r-xl: 16px;
  --obd-font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Noto Sans Arabic", sans-serif;
  --obd-font-read: "Source Serif 4", "Iowan Old Style", Georgia, "Noto Naskh Arabic", serif;
  --obd-ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --obd-scale: 1;

  display: none;
  position: absolute;
  inset: 0;
  align-items: center;
  justify-content: center;
  color: var(--obd-ink);
  font-family: var(--obd-font);
  font-size: 12.5px;
  line-height: 1.4;
  text-align: start;
  -webkit-font-smoothing: antialiased;
}
.obd-stage *, .obd-stage *::before, .obd-stage *::after { box-sizing: border-box; }

/* The showcase stage swaps to the new demos (control keeps the old .v2-demo set). */
#v2ShowcaseStage.obd-active {
  border-color: transparent;
  background: transparent;
  box-shadow: none;
  overflow: visible;
}
#v2ShowcaseStage.obd-active > .v2-demo { display: none !important; }
#v2ShowcaseStage.obd-active > .obd-stage { display: flex; }

.obd-fit {
  display: none;
  flex: none;
  width: calc(360px * var(--obd-scale));
  height: calc(400px * var(--obd-scale));
}
.obd-fit.is-on { display: block; }
.obd-demo {
  width: 360px;
  height: 400px;
  transform: scale(var(--obd-scale));
  transform-origin: top left;
}
[dir="rtl"] .obd-demo { transform-origin: top right; }

/* ---------- Window ---------- */
.obd-win {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  height: calc(100% - 18px);
  overflow: hidden;
  background: var(--obd-surface);
  border-radius: var(--obd-r-xl);
  box-shadow: 0 18px 40px -18px rgba(10, 10, 15, 0.28), 0 0 0 1px rgba(10, 10, 15, 0.07);
  transition: opacity 0.45s var(--obd-ease);
}
.obd-demo.is-ending .obd-win { opacity: 0; }
.obd-demo.is-resetting *,
.obd-demo.is-resetting *::before,
.obd-demo.is-resetting *::after { transition: none !important; animation-play-state: paused; }

.obd-bar {
  display: flex; align-items: center; gap: 7px; flex: none;
  height: 38px; padding-inline: 12px;
  border-block-end: 1px solid var(--obd-line);
  font-size: 12.5px; font-weight: 600;
}
.obd-bar > .obd-i { color: var(--obd-ink-3); }
.obd-bar__title { min-width: 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.obd-bar__sp, .obd-foot__sp, .obd-timer__sp { flex: 1; }
.obd-dots { display: inline-flex; gap: 4px; margin-inline-end: 3px; }
.obd-dots i { width: 7px; height: 7px; border-radius: 50%; background: var(--obd-surface-3); }
.obd-body { position: relative; flex: 1; min-height: 0; display: flex; flex-direction: column; }
.obd-pad { padding: 12px 14px; gap: 9px; }
.obd-demo::after {
  content: attr(data-sample);
  display: block; margin-block-start: 4px;
  color: var(--obd-ink-4); font-size: 10px; font-weight: 500; text-align: center;
}

/* ---------- Primitives ---------- */
.obd-i { width: 14px; height: 14px; flex: none; }
.obd-muted { color: var(--obd-ink-3); }
.obd-warn { color: var(--obd-warn); }
.obd-num { font-variant-numeric: tabular-nums; }
.obd-serif { font-family: var(--obd-font-read); }
.obd-ellipsis { min-width: 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.obd-label { font-size: 10.5px; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; color: var(--obd-ink-3); }
.obd-label--accent { color: var(--obd-accent); }
.obd-badge {
  flex: none; max-width: 150px; overflow: hidden; white-space: nowrap; text-overflow: ellipsis;
  padding: 2px 8px; border-radius: 999px; font-size: 10.5px; font-weight: 600;
}
.obd-badge--ok { background: var(--obd-accent-soft); color: var(--obd-accent-ink); }
.obd-pill {
  display: inline-flex; align-items: center; gap: 5px; align-self: flex-start;
  padding: 3px 9px; border-radius: 999px; font-size: 11px; font-weight: 600; white-space: nowrap;
}
.obd-pill .obd-i { width: 12px; height: 12px; }
.obd-pill--accent { background: var(--obd-accent-soft); color: var(--obd-accent-ink); border: 1px solid var(--obd-accent-line); }
.obd-pill--warn { background: var(--obd-warn-soft); color: var(--obd-warn); border: 1px solid var(--obd-warn-line); }
.obd-chip {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 8px; border-radius: var(--obd-r-sm);
  background: var(--obd-surface-2); color: var(--obd-ink-2); font-size: 11px; font-weight: 500;
}
.obd-chip .obd-i { width: 12px; height: 12px; color: var(--obd-accent); }
.obd-chip--accent { background: var(--obd-accent-soft); color: var(--obd-accent-ink); }
.obd-jtag {
  display: inline-block; padding: 2px 7px; border-radius: var(--obd-r-sm);
  background: var(--obd-ink); color: #fff; font-size: 10.5px; font-weight: 700; white-space: nowrap;
}
.obd-btn {
  display: inline-flex; align-items: center; gap: 5px; flex: none;
  padding: 5px 10px; border-radius: var(--obd-r-md); font-size: 11.5px; font-weight: 600; white-space: nowrap;
}
.obd-btn .obd-i { width: 12px; height: 12px; }
.obd-btn--ghost { border: 1px solid var(--obd-line); background: var(--obd-surface); color: var(--obd-ink-2); }
.obd-btn--primary { background: var(--obd-ink); color: #fff; }
.obd-btn--sm { padding: 3px 8px; font-size: 11px; }
.obd-saved {
  display: inline-flex; align-items: center; gap: 5px; align-self: flex-start;
  padding: 4px 9px; border-radius: 999px;
  background: var(--obd-accent); color: #fff; font-size: 11px; font-weight: 600; white-space: nowrap;
  box-shadow: 0 6px 14px -6px rgba(4, 120, 87, 0.55);
}
.obd-saved .obd-i { width: 12px; height: 12px; }
.obd-foot { display: flex; align-items: center; gap: 8px; margin-block-start: auto; }
.obd-push { margin-block-start: auto; }
.obd-spin {
  flex: none; width: 13px; height: 13px; border-radius: 50%;
  border: 2px solid var(--obd-accent-line); border-block-start-color: var(--obd-accent);
  animation: obd-spin 0.8s linear infinite;
}
@keyframes obd-spin { to { transform: rotate(360deg); } }

/* ---------- Scene choreography (classes set by the scene engine) ---------- */
.obd-demo :is(.on-1, .on-2, .on-3, .on-4, .on-5, .on-6) {
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.4s var(--obd-ease), transform 0.45s var(--obd-ease);
}
.obd-demo.s1 .on-1, .obd-demo.s2 .on-2, .obd-demo.s3 .on-3,
.obd-demo.s4 .on-4, .obd-demo.s5 .on-5, .obd-demo.s6 .on-6 { opacity: 1; transform: none; }
.obd-demo :is(.off-2, .off-3, .off-4, .off-5, .off-6) { transition: opacity 0.35s var(--obd-ease); }
.obd-demo.s2 .off-2, .obd-demo.s3 .off-3, .obd-demo.s4 .off-4,
.obd-demo.s5 .off-5, .obd-demo.s6 .off-6 { opacity: 0; }
.obd-demo .d1 { transition-delay: 0.12s; }
.obd-demo .d2 { transition-delay: 0.36s; }
.obd-demo .d3 { transition-delay: 0.6s; }
.obd-demo .d4 { transition-delay: 0.84s; }
.obd-demo .d5 { transition-delay: 1.1s; }
.obd-demo.s2 .gone-2, .obd-demo.s3 .gone-3, .obd-demo.s4 .gone-4, .obd-demo.s5 .gone-5 { display: none; }
.obd-demo:not(.s2) .from-2, .obd-demo:not(.s3) .from-3,
.obd-demo:not(.s4) .from-4, .obd-demo:not(.s5) .from-5 { display: none; }
.obd-demo.s2 .from-2, .obd-demo.s3 .from-3, .obd-demo.s4 .from-4, .obd-demo.s5 .from-5 { animation: obd-in 0.4s var(--obd-ease) both; }
@keyframes obd-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.obd-demo [data-type]:not(:empty)::after {
  content: "";
  display: inline-block; width: 1.5px; height: 1em; margin-inline-start: 1px;
  background: var(--obd-accent); vertical-align: -2px;
  animation: obd-caret 0.9s steps(1) infinite;
}
.obd-demo [data-type].is-done::after { display: none; }
@keyframes obd-caret { 50% { opacity: 0; } }

/* ---------- 1. Weekly digest ---------- */
.obd-scan { display: flex; flex-direction: column; gap: 12px; padding-block-start: 10px; }
.obd-jchips { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
.obd-jchip {
  display: flex; align-items: center; gap: 6px; min-width: 0;
  padding: 7px 9px; border: 1px solid var(--obd-line); border-radius: var(--obd-r-md);
  font-size: 11.5px; font-weight: 600;
}
.obd-jchip > span { min-width: 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.obd-jchip .obd-i { width: 12px; height: 12px; color: var(--obd-accent); }
.obd-scan__count { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; margin-block-start: 6px; }
.obd-bignum { font-size: 30px; font-weight: 700; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.obd-funnel { height: 6px; border-radius: 999px; background: var(--obd-surface-2); overflow: hidden; }
.obd-funnel__bar { display: block; height: 100%; width: 0; background: var(--obd-accent-2); border-radius: inherit; }
.obd-demo.s1 .obd-funnel__bar { width: 100%; transition: width 1.5s linear; }
.obd-demo.s2 .obd-funnel__bar { width: 4%; background: var(--obd-accent); transition: width 0.7s var(--obd-ease); }
.obd-scan .obd-pill { font-size: 12px; padding: 5px 11px; }

.obd-dg {
  flex: none;
  display: flex; flex-direction: column; gap: 6px;
  padding: 10px 11px; border: 1px solid var(--obd-line); border-radius: var(--obd-r-lg);
  box-shadow: 0 4px 12px -6px rgba(10, 10, 15, 0.12);
}
.obd-dg__row { display: flex; align-items: center; gap: 6px; }
.obd-dg__row .obd-pill { margin-inline-start: auto; }
.obd-rank {
  display: inline-grid; place-items: center; flex: none; width: 20px; height: 20px;
  border-radius: 50%; background: var(--obd-accent); color: #fff; font-size: 11px; font-weight: 700;
}
.obd-rank--muted { background: var(--obd-surface-2); color: var(--obd-ink-3); }
.obd-dg__title { font-size: 14px; font-weight: 600; line-height: 1.28; display: -webkit-box; -webkit-box-orient: vertical; overflow: hidden; -webkit-line-clamp: 2; }
.obd-dg__tldr { min-height: 2.8em; color: var(--obd-ink-2); font-size: 12px; }
.obd-stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
.obd-stat { padding: 5px 8px; border-radius: var(--obd-r-md); background: var(--obd-accent-soft); }
.obd-stat__k { display: block; font-size: 10px; font-weight: 600; color: var(--obd-accent-ink); }
.obd-stat__v { display: block; font-size: 16px; font-weight: 700; font-variant-numeric: tabular-nums; }
.obd-why { display: flex; gap: 6px; font-size: 11.5px; color: var(--obd-ink-2); }
.obd-why .obd-i { width: 13px; height: 13px; margin-block-start: 1px; color: var(--obd-warn); }
.obd-drow { display: flex; align-items: center; gap: 8px; padding-inline: 4px; }
.obd-drow__t { font-size: 12px; font-weight: 600; line-height: 1.25; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.obd-drow__j { font-size: 10.5px; color: var(--obd-ink-3); }
.obd-brief {
  position: relative; display: flex; align-items: center; gap: 9px; overflow: hidden;
  padding: 7px 10px 9px; border-radius: var(--obd-r-lg); background: var(--obd-ink); color: #fff;
}
.obd-brief__btn { display: inline-grid; place-items: center; flex: none; width: 26px; height: 26px; border-radius: 50%; background: var(--obd-accent-2); }
.obd-brief__btn .obd-i { width: 12px; height: 12px; }
.obd-brief__txt { flex: 1; min-width: 0; }
.obd-brief__t { font-size: 11.5px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.obd-brief__sub { display: flex; align-items: center; gap: 4px; font-size: 10.5px; font-weight: 600; color: #6ee7b7; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.obd-brief__sub .obd-i { width: 11px; height: 11px; }
.obd-brief > .obd-i { color: rgba(255, 255, 255, 0.6); }
.obd-brief__bar { position: absolute; inset-inline: 0; inset-block-end: 0; height: 3px; background: rgba(255, 255, 255, 0.15); }
.obd-brief__bar i { display: block; height: 100%; width: 0; background: var(--obd-accent-2); }
.obd-demo.s5 .obd-brief__bar i { width: 34%; transition: width 2.8s linear; }

/* ---------- 2. Paper summarizer ---------- */
.obd-sum { flex: 1; display: flex; flex-direction: column; justify-content: center; gap: 12px; padding-block-end: 20px; }
.obd-pdf { display: flex; gap: 10px; padding: 10px; border: 1px solid var(--obd-line); border-radius: var(--obd-r-lg); }
.obd-pdf__icon {
  display: grid; place-items: center; align-content: center; gap: 2px; flex: none; width: 46px; height: 58px;
  border-radius: var(--obd-r-md); background: #fef2f2; color: #dc2626; font-size: 9px;
}
.obd-pdf__icon .obd-i { width: 18px; height: 18px; }
.obd-pdf__meta { min-width: 0; display: flex; flex-direction: column; gap: 4px; }
.obd-pdf__t { font-weight: 600; line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.obd-timer {
  display: flex; align-items: center; gap: 8px;
  padding: 9px 11px; border-radius: var(--obd-r-md); background: var(--obd-surface-2); font-weight: 500;
}
.obd-timer b { font-size: 14px; }
.obd-checks { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
.obd-check { display: flex; align-items: center; gap: 6px; padding: 6px 8px; border-radius: var(--obd-r-md); background: var(--obd-accent-soft); color: var(--obd-accent-ink); font-weight: 600; font-size: 11.5px; }
.obd-check .obd-i { width: 12px; height: 12px; }
.obd-paper { display: flex; flex-direction: column; gap: 6px; }
.obd-paper__meta { display: flex; align-items: center; gap: 7px; min-width: 0; font-size: 11px; }
.obd-paper__title { font-size: 14.5px; font-weight: 600; line-height: 1.28; display: -webkit-box; -webkit-box-orient: vertical; overflow: hidden; -webkit-line-clamp: 2; }
.obd-paper__bl { min-height: 2.8em; font-weight: 600; color: var(--obd-ink); display: -webkit-box; -webkit-box-orient: vertical; overflow: hidden; -webkit-line-clamp: 3; }
.obd-effect {
  display: flex; gap: 10px; padding: 9px 10px;
  border: 1px solid var(--obd-accent-line); border-radius: var(--obd-r-lg); background: var(--obd-accent-soft);
}
.obd-effect__big { display: flex; flex-direction: column; justify-content: center; flex: none; padding-inline-end: 10px; border-inline-end: 1px solid var(--obd-accent-line); }
.obd-effect__v { font-size: 18px; font-weight: 800; color: var(--obd-accent-ink); white-space: nowrap; font-variant-numeric: tabular-nums; }
.obd-effect__ci { font-size: 10px; color: var(--obd-ink-3); white-space: nowrap; }
.obd-effect__arms { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.obd-effect__label { font-size: 10.5px; font-weight: 600; color: var(--obd-ink-3); line-height: 1.25; }
.obd-arm { display: flex; justify-content: space-between; gap: 8px; font-size: 11.5px; }
.obd-arm span:last-child { font-weight: 700; }
.obd-arm--on { color: var(--obd-accent-ink); }
.obd-caveat {
  display: flex; gap: 6px; padding: 6px 9px; border-radius: var(--obd-r-md);
  background: var(--obd-warn-soft); color: #78350f; font-size: 11.5px;
}
.obd-caveat > span { display: -webkit-box; -webkit-box-orient: vertical; overflow: hidden; -webkit-line-clamp: 2; }
.obd-caveat .obd-i { width: 13px; height: 13px; margin-block-start: 1px; color: var(--obd-warn); }

/* ---------- 3. Note taker ---------- */
.obd-rec { display: flex; flex-direction: column; gap: 10px; }
.obd-tpl {
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
  padding: 7px 10px; border-radius: var(--obd-r-md); background: var(--obd-surface-2); font-size: 11.5px;
}
.obd-tpl .obd-i { color: var(--obd-accent); }
.obd-tpl__v { font-weight: 700; color: var(--obd-accent-ink); }
.obd-rec__mid { display: flex; align-items: center; gap: 12px; padding-block: 4px; }
.obd-recbtn {
  display: grid; place-items: center; flex: none; width: 52px; height: 52px; border-radius: 50%;
  background: var(--obd-rec); color: #fff; box-shadow: 0 0 0 6px rgba(225, 29, 72, 0.12);
}
.obd-recbtn .obd-i { width: 22px; height: 22px; }
.obd-demo.s2 .obd-recbtn { animation: obd-pulse 1.4s ease-in-out infinite; }
@keyframes obd-pulse { 50% { box-shadow: 0 0 0 11px rgba(225, 29, 72, 0.06); } }
.obd-rec__timer { font-size: 26px; font-weight: 700; letter-spacing: -0.02em; }
.obd-rec__state { position: relative; height: 16px; font-size: 11px; color: var(--obd-ink-3); }
.obd-rec__state > span { position: absolute; inset-inline-start: 0; white-space: nowrap; }
.obd-rec__live { display: inline-flex; align-items: center; gap: 5px; color: var(--obd-rec); font-weight: 600; }
.obd-rec__live i { width: 7px; height: 7px; border-radius: 50%; background: var(--obd-rec); animation: obd-caret 1s steps(1) infinite; }
.obd-meter { display: flex; align-items: center; gap: 2px; flex: 1; height: 40px; }
.obd-meter span { flex: 1; height: 4px; border-radius: 2px; background: var(--obd-surface-3); }
.obd-demo.s2 .obd-meter span { background: var(--obd-rec); animation: obd-level 0.7s ease-in-out infinite alternate; }
.obd-meter span:nth-child(3n) { animation-delay: -0.2s !important; }
.obd-meter span:nth-child(3n + 1) { animation-delay: -0.45s !important; }
.obd-meter span:nth-child(4n) { animation-duration: 0.55s !important; }
@keyframes obd-level { from { height: 4px; } to { height: 34px; } }
.obd-tx { display: flex; flex-direction: column; gap: 6px; padding: 9px 10px; border: 1px solid var(--obd-line); border-radius: var(--obd-r-lg); }
.obd-tx__line { display: flex; gap: 8px; min-height: 2.8em; color: var(--obd-ink-2); }
.obd-tx__who {
  display: grid; place-items: center; flex: none; width: 22px; height: 22px; border-radius: 50%;
  background: var(--obd-accent-soft); color: var(--obd-accent);
}
.obd-tx__who .obd-i { width: 12px; height: 12px; }
.obd-tx__who--pt { background: var(--obd-surface-2); color: var(--obd-ink-3); }
.obd-live { display: flex; flex-direction: column; gap: 6px; }
.obd-live__secs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 5px; }
.obd-live__sec {
  display: flex; align-items: center; gap: 6px; min-width: 0; padding: 5px 8px;
  border-radius: var(--obd-r-md); background: var(--obd-accent-soft); color: var(--obd-accent-ink);
  font-size: 11px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.obd-live__sec b {
  display: grid; place-items: center; flex: none; width: 16px; height: 16px; border-radius: 4px;
  background: var(--obd-accent); color: #fff; font-size: 9.5px;
}
.obd-writing {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
  color: var(--obd-ink-2); font-weight: 600;
}
.obd-writing .obd-spin { width: 22px; height: 22px; border-width: 3px; }
.obd-note { display: flex; flex-direction: column; gap: 8px; height: 100%; }
.obd-note__head { display: flex; align-items: center; gap: 8px; }
.obd-soap { display: flex; flex-direction: column; gap: 7px; }
.obd-soap__row { display: flex; gap: 9px; }
.obd-soap__k {
  display: grid; place-items: center; flex: none; width: 22px; height: 22px; border-radius: var(--obd-r-sm);
  background: var(--obd-ink); color: #fff; font-size: 11px; font-weight: 700;
}
.obd-soap__h { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--obd-ink-3); }
.obd-soap__t { font-size: 12px; line-height: 1.35; display: -webkit-box; -webkit-box-orient: vertical; overflow: hidden; -webkit-line-clamp: 2; }
.obd-note .obd-saved { margin-block-start: auto; }

/* ---------- 4. Chat ---------- */
.obd-chat { padding: 0; }
.obd-log { flex: 1; min-height: 0; display: flex; flex-direction: column; gap: 7px; padding: 10px 14px 6px; overflow: hidden; }
.obd-user {
  align-self: flex-end; max-width: 88%; display: -webkit-box; -webkit-box-orient: vertical; overflow: hidden; -webkit-line-clamp: 2;
  padding: 7px 11px; border-radius: 14px 14px 4px 14px; background: var(--obd-surface-2); font-size: 12px;
}
.obd-think { display: flex; flex-direction: column; gap: 8px; padding: 10px; border: 1px solid var(--obd-line); border-radius: var(--obd-r-lg); }
.obd-think__l { display: flex; align-items: center; gap: 7px; font-weight: 600; }
.obd-think__count { color: var(--obd-ink-3); }
.obd-think__count b { color: var(--obd-ink); font-size: 16px; }
.obd-think__chips { display: flex; gap: 5px; flex-wrap: wrap; }
.obd-ai { display: flex; flex-direction: column; gap: 7px; }
.obd-ai__head { display: flex; align-items: center; gap: 6px; font-size: 11.5px; font-weight: 600; }
.obd-ai__mark { display: grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; background: var(--obd-accent); color: #fff; }
.obd-ai__mark .obd-i { width: 11px; height: 11px; }
.obd-kt { padding: 7px 10px; border-radius: var(--obd-r-md); background: var(--obd-accent-soft); border-inline-start: 3px solid var(--obd-accent); }
.obd-kt__h { display: flex; align-items: center; gap: 5px; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--obd-accent-ink); }
.obd-kt__h .obd-i { width: 12px; height: 12px; }
.obd-kt__b { font-weight: 600; font-size: 12px; }
.obd-ans { margin: 0; min-height: 4.2em; font-family: var(--obd-font-read); font-size: 12px; line-height: 1.42; color: var(--obd-ink-2); }
.obd-cite {
  display: inline-grid; place-items: center; min-width: 15px; height: 15px; margin-inline: 2px; padding-inline: 3px;
  border-radius: 4px; background: var(--obd-accent); color: #fff; font-family: var(--obd-font); font-size: 9.5px; font-weight: 700; vertical-align: 2px;
}
.obd-srcs { display: flex; flex-direction: column; gap: 5px; }
.obd-src { display: flex; gap: 8px; padding: 6px 8px; border: 1px solid var(--obd-line); border-radius: var(--obd-r-md); }
.obd-src__n {
  display: grid; place-items: center; flex: none; width: 17px; height: 17px; border-radius: 4px;
  background: var(--obd-accent-soft); color: var(--obd-accent-ink); font-size: 10px; font-weight: 700;
}
.obd-src__b { min-width: 0; flex: 1; }
.obd-src__tags { display: flex; align-items: center; gap: 4px; min-width: 0; font-size: 10px; }
.obd-src__t { font-size: 11.5px; font-weight: 600; line-height: 1.25; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.obd-tag { flex: none; padding: 1px 6px; border-radius: 4px; font-size: 9.5px; font-weight: 700; }
.obd-tag:empty { display: none; }
.obd-tag--a { background: var(--obd-info-soft); color: var(--obd-info); }
.obd-tag--b { background: var(--obd-violet-soft); color: var(--obd-violet); }
.obd-tag--grade { background: var(--obd-accent); color: #fff; }
.obd-composer {
  display: flex; align-items: center; gap: 7px; flex: none;
  margin: 0 10px 10px; padding: 6px 6px 6px 11px;
  border: 1px solid var(--obd-line); border-radius: 14px; box-shadow: 0 2px 6px -3px rgba(10, 10, 15, 0.1);
}
.obd-composer__in { position: relative; flex: 1; min-width: 0; height: 18px; overflow: hidden; white-space: nowrap; }
.obd-composer__ph, .obd-composer__typed { position: absolute; inset-inline: 0; overflow: hidden; text-overflow: ellipsis; }
.obd-composer__ph { color: var(--obd-ink-4); }
.obd-demo.s1 .obd-composer__ph { opacity: 0; }
.obd-demo.s2 .obd-composer__ph { opacity: 1; }
.obd-demo.s2 .obd-composer__typed { opacity: 0; }
.obd-composer__deep { display: inline-flex; align-items: center; gap: 5px; flex: none; font-size: 10.5px; color: var(--obd-ink-3); }
.obd-switch { position: relative; width: 22px; height: 13px; border-radius: 999px; background: var(--obd-accent); }
.obd-switch::after { content: ""; position: absolute; inset-block-start: 2px; inset-inline-end: 2px; width: 9px; height: 9px; border-radius: 50%; background: #fff; }
.obd-send { display: grid; place-items: center; flex: none; width: 26px; height: 26px; border-radius: 50%; background: var(--obd-ink); color: #fff; }
.obd-send .obd-i { width: 13px; height: 13px; }

/* ---------- 5. Slides ---------- */
.obd-src-row { display: flex; align-items: center; gap: 6px; min-width: 0; font-size: 11.5px; font-weight: 600; color: var(--obd-ink-2); }
.obd-src-row .obd-i { color: var(--obd-accent); }
.obd-gen { display: flex; flex-direction: column; gap: 10px; padding-block-start: 30px; }
.obd-gen__bar { height: 6px; border-radius: 999px; background: var(--obd-surface-2); overflow: hidden; }
.obd-gen__bar i { display: block; height: 100%; width: 0; background: var(--obd-accent-2); }
.obd-demo.s1 .obd-gen__bar i { width: 100%; transition: width 1.4s linear; }
.obd-deck { display: flex; flex-direction: column; gap: 8px; }
.obd-slide {
  position: relative; height: 214px; border-radius: var(--obd-r-lg); overflow: hidden;
  background: linear-gradient(160deg, #ffffff 0%, #f3faf6 100%);
  box-shadow: 0 0 0 1px var(--obd-line), 0 10px 22px -14px rgba(10, 10, 15, 0.35);
}
.obd-slide__face { position: absolute; inset: 0; display: flex; flex-direction: column; gap: 8px; padding: 14px 16px; }
.obd-slide__kicker { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--obd-accent); }
.obd-slide__h { font-size: 15px; font-weight: 700; line-height: 1.25; }
.obd-slide__big { font-size: 19px; font-weight: 600; line-height: 1.3; }
.obd-slide__foot { margin-block-start: auto; font-size: 11px; font-weight: 700; color: var(--obd-accent-ink); }
.obd-slide__num { position: absolute; inset-block-end: 8px; inset-inline-end: 12px; font-size: 10px; color: var(--obd-ink-4); }
.obd-slide__num > span { display: inline; }
.obd-demo:not(.s3) .obd-slide__num .on-3, .obd-demo.s3 .obd-slide__num .off-3 { display: none; }
.obd-bars { display: flex; flex-direction: column; gap: 10px; margin-block-start: 6px; }
.obd-bars__row { display: grid; grid-template-columns: 84px minmax(0, 1fr) 42px; align-items: center; gap: 8px; font-size: 11px; }
.obd-bars__l { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; font-weight: 600; }
.obd-bars__track { height: 18px; border-radius: 4px; background: var(--obd-surface-2); overflow: hidden; }
.obd-bars__fill { display: block; height: 100%; width: 0; border-radius: 4px; background: var(--obd-ink-4); }
.obd-bars__fill--a { background: var(--obd-accent); }
.obd-demo.s2 .obd-bars__fill { width: var(--w); transition: width 1.1s var(--obd-ease) 0.3s; }
.obd-bars__v { font-weight: 700; text-align: end; }
.obd-thumbs { display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: 5px; }
.obd-thumb {
  display: flex; flex-direction: column; gap: 4px; height: 38px; padding: 6px;
  border-radius: 4px; background: var(--obd-surface); box-shadow: 0 0 0 1px var(--obd-line);
}
.obd-thumb i { display: block; height: 3px; border-radius: 2px; background: var(--obd-surface-3); }
.obd-thumb i:first-child { width: 70%; background: var(--obd-accent-line); }
.obd-demo.s2:not(.s3) .obd-thumb.is-cur2, .obd-demo.s3 .obd-thumb.is-cur3 { box-shadow: 0 0 0 2px var(--obd-accent); }

/* ---------- 6. Writing ---------- */
.obd-doc__bar { display: flex; align-items: center; gap: 6px; }
.obd-doc { flex: none; padding: 12px 14px; border: 1px solid var(--obd-line); border-radius: var(--obd-r-lg); min-height: 130px; }
.obd-doc__h { font-size: 15px; font-weight: 700; margin-block-end: 6px; }
.obd-doc__p { margin: 0; font-size: 13px; line-height: 1.5; color: var(--obd-ink-2); }
.obd-refs { display: flex; flex-direction: column; gap: 6px; padding: 10px 12px; border-radius: var(--obd-r-lg); background: var(--obd-surface-2); }
.obd-refs__h { display: flex; align-items: center; gap: 6px; font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--obd-ink-3); }
.obd-refs__h .obd-pill { text-transform: none; letter-spacing: 0; font-size: 10px; }
.obd-ref { display: flex; gap: 6px; font-size: 11px; line-height: 1.35; color: var(--obd-ink-2); }
.obd-ref__n { flex: none; font-weight: 700; color: var(--obd-ink); }
.obd-ref__j { font-style: italic; }
.obd-ref > span:last-child { display: -webkit-box; -webkit-box-orient: vertical; overflow: hidden; -webkit-line-clamp: 2; }

/* ---------- 7. Study ---------- */
.obd-qhead { display: flex; align-items: center; gap: 8px; font-size: 11px; }
.obd-qprog { display: flex; gap: 3px; flex: 1; }
.obd-qprog i { flex: 1; height: 4px; border-radius: 2px; background: var(--obd-surface-3); }
.obd-qprog i.is-done { background: var(--obd-accent); }
.obd-qprog i.is-cur { background: var(--obd-accent-line); }
.obd-q { font-size: 13px; font-weight: 600; line-height: 1.35; display: -webkit-box; -webkit-box-orient: vertical; overflow: hidden; -webkit-line-clamp: 4; }
.obd-opts { display: flex; flex-direction: column; gap: 4px; }
.obd-opt {
  display: flex; align-items: center; gap: 8px; padding: 4px 9px;
  border: 1px solid var(--obd-line); border-radius: var(--obd-r-md); font-size: 12px;
  transition: opacity 0.4s var(--obd-ease), transform 0.45s var(--obd-ease), background 0.3s, border-color 0.3s;
}
.obd-opt__l {
  display: grid; place-items: center; flex: none; width: 19px; height: 19px; border-radius: 50%;
  background: var(--obd-surface-2); font-size: 10.5px; font-weight: 700; color: var(--obd-ink-3);
}
.obd-opt__t { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.obd-opt__ok { display: none; color: var(--obd-accent); }
.obd-demo.s3 .obd-opt.is-key { border-color: var(--obd-accent); background: var(--obd-accent-soft); }
.obd-demo.s3 .obd-opt.is-key .obd-opt__l { background: var(--obd-accent); color: #fff; }
.obd-demo.s3 .obd-opt.is-key .obd-opt__ok { display: inline-flex; }
.obd-demo.s3 .obd-opt:not(.is-key) { opacity: 0.55; }
.obd-explain { display: flex; flex-direction: column; gap: 3px; padding: 7px 10px; border-radius: var(--obd-r-md); background: var(--obd-accent-soft); }
.obd-explain__ok { display: flex; align-items: center; gap: 5px; min-width: 0; font-size: 11px; font-weight: 700; color: var(--obd-accent-ink); }
.obd-explain__ok .obd-i { width: 12px; height: 12px; }
.obd-explain__t { font-size: 11.5px; line-height: 1.35; display: -webkit-box; -webkit-box-orient: vertical; overflow: hidden; -webkit-line-clamp: 3; }
.obd-explain__src { display: flex; align-items: center; gap: 4px; min-width: 0; margin-inline-start: auto; font-size: 10px; font-weight: 500; color: var(--obd-ink-3); }
.obd-explain__src .obd-i { width: 11px; height: 11px; }
.obd-qstats { display: flex; align-items: center; gap: 10px; margin-block-start: auto; font-size: 11px; color: var(--obd-ink-3); }
.obd-qstat { display: inline-flex; align-items: center; gap: 4px; white-space: nowrap; }
.obd-qstat b { color: var(--obd-ink); font-size: 12.5px; }
.obd-qstat .obd-i { width: 13px; height: 13px; }

@media (prefers-reduced-motion: reduce) {
  .obd-demo *, .obd-demo *::before, .obd-demo *::after { animation: none !important; transition: none !important; }
}