.page--learn {
  padding-top: 32px;
  padding-bottom: 48px;
}

/* Learn page — header with icon shared in page.css */

.page--learn .page__header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px 24px;
  flex-wrap: wrap;
}

.page--learn .page__subtitle {
  margin: 0;
  flex: 1 1 200px;
  min-width: 0;
  font-size: 15px;
  line-height: 1.5;
  color: var(--color-text-muted);
}

.page--learn .page__content {
  margin-top: 28px;
}

.guide {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.guide-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
}

.guide-progress {
  display: flex;
  flex-direction: column;
}

.guide-progress__label {
  margin: 0 0 10px;
  font-size: 13px;
  line-height: 1.45;
}

.guide-progress__step {
  font-weight: 500;
  color: var(--color-text-muted);
}

.guide-progress__track {
  height: 3px;
  border-radius: var(--radius-btn);
  background: color-mix(in srgb, var(--color-border) 60%, transparent);
  overflow: hidden;
}

.guide-progress__fill {
  display: block;
  height: 100%;
  background: var(--color-accent);
  border-radius: inherit;
  transition: width 0.3s ease;
}

.guide-outline__module {
  margin-bottom: 0;
  border-radius: var(--radius-md);
}

.guide-outline__module-summary {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-text-muted) 28%, var(--color-text));
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.guide-outline__module-summary::-webkit-details-marker {
  display: none;
}

.guide-outline__module:not([open]) .guide-outline__module-summary::before {
  content: "▶";
  font-size: 9px;
  line-height: 1;
  opacity: 0.8;
}

.guide-outline__module.is-current-module .guide-outline__module-summary {
  color: var(--color-text);
}

.guide-outline__module:not([open]) .guide-outline__module-summary:hover {
  color: color-mix(in srgb, var(--color-text-muted) 35%, var(--color-text));
}

.guide-outline__module[open] .guide-outline__module-summary {
  padding-bottom: 2px;
}

.guide-outline__module[open] .guide-outline__steps {
  margin-top: 2px;
  padding-left: 2px;
}

.guide-outline__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.guide-outline__step-label {
  min-width: 0;
  line-height: 1.35;
}

.guide-outline__step {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  border: none;
  border-radius: var(--radius-md);
  background: none;
  color: var(--color-text-muted);
  font: inherit;
  font-size: 14px;
  line-height: 1.35;
  text-align: left;
  cursor: pointer;
  transition: color 0.15s ease;
}

.guide-outline__step:hover {
  color: var(--color-accent);
}

.guide-outline__step.is-current {
  color: var(--color-text);
  font-weight: 600;
  padding: 12px 10px;
  background: color-mix(
    in srgb,
    var(--color-accent) 10%,
    color-mix(in srgb, var(--color-text) 7%, var(--color-bg))
  );
  box-shadow: inset 4px 0 0 var(--color-accent);
}

.guide-outline__step.is-done {
  color: color-mix(in srgb, var(--color-text-muted) 55%, var(--color-text));
}

.guide-outline__num {
  flex-shrink: 0;
  width: 22px;
  padding-top: 1px;
  font-size: 12px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  color: var(--color-text-muted);
}

.guide-outline__step.is-current .guide-outline__num {
  font-weight: 700;
  color: var(--color-text);
}

.guide-outline__step.is-done .guide-outline__num {
  color: color-mix(in srgb, var(--color-text-muted) 70%, var(--color-text));
}

.guide-outline {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.guide-step {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.guide-step__title {
  font-size: clamp(22px, 4vw, 28px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin: 0;
}

.guide-step__body {
  font-size: 15px;
  line-height: 1.65;
  color: color-mix(in srgb, var(--color-text-muted) 72%, var(--color-text));
}

.guide-step__body p {
  margin-bottom: 12px;
}

.guide-step__body p:last-child {
  margin-bottom: 0;
}

.guide-lesson__heading {
  margin: 22px 0 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text);
}

.guide-lesson__heading:first-child {
  margin-top: 0;
}

.guide-lesson__list,
.guide-lesson__steps {
  margin: 0 0 14px;
  padding-left: 1.35em;
}

.guide-lesson__list {
  list-style: disc;
}

.guide-lesson__steps {
  list-style: decimal;
}

.guide-lesson__list li,
.guide-lesson__steps li {
  margin-bottom: 8px;
  padding-left: 0.2em;
}

.guide-lesson__list li:last-child,
.guide-lesson__steps li:last-child {
  margin-bottom: 0;
}

.guide-tutorials__note {
  margin: 0 0 14px;
  font-size: 13px;
  color: var(--color-text-muted);
}

.guide-tutorials {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.guide-tutorials__item {
  margin: 0;
}

.guide-tutorials__link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  border: 1px solid color-mix(in srgb, var(--color-border) 70%, transparent);
  background: color-mix(in srgb, var(--color-surface) 88%, transparent);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.guide-tutorials__link:hover {
  border-color: var(--color-accent);
  background: color-mix(in srgb, var(--color-accent) 8%, var(--color-surface));
}

.guide-tutorials__thumb {
  flex: 0 0 96px;
  width: 96px;
  height: 54px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: #111;
}

.guide-tutorials__text {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.guide-tutorials__title {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.35;
  color: var(--color-text);
}

.guide-tutorials__meta {
  font-size: 12px;
  color: var(--color-text-muted);
}

.guide-step__body strong {
  font-weight: 600;
  color: var(--color-text);
}

.guide-step__video {
  width: 100%;
  margin-top: 4px;
  margin-bottom: 4px;
  padding-bottom: 24px;
  border-bottom: 1px solid color-mix(in srgb, var(--color-border) 65%, transparent);
}

.guide-step__video-label {
  margin: 0 0 4px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.guide-step__media {
  width: 100%;
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--color-border) 18%, transparent);
  color: var(--color-text-muted);
  font-size: 14px;
}

.guide-step__media.has-video {
  padding: 0;
  overflow: hidden;
  background: #000;
  box-shadow: 0 4px 20px color-mix(in srgb, var(--color-text) 10%, transparent);
}

.guide-video-poster {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: inherit;
  cursor: pointer;
  background: #111;
  text-align: left;
}

.guide-video-poster:hover .guide-video-poster__play {
  transform: translate(-50%, -50%) scale(1.06);
  background: #fff;
}

.guide-video-poster:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.guide-video-poster--pending {
  cursor: default;
}

.guide-video-poster__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.guide-video-poster__play {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: #fff;
  transform: translate(-50%, -50%);
  transition: transform 0.2s ease, background 0.2s ease;
  box-shadow: 0 4px 28px rgba(0, 0, 0, 0.45);
}

.guide-video-poster__play::after {
  content: "";
  position: absolute;
  left: 54%;
  top: 50%;
  transform: translate(-50%, -50%);
  border-style: solid;
  border-width: 11px 0 11px 18px;
  border-color: transparent transparent transparent var(--color-text);
}

.guide-step__media.is-playing iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.page--learn .guide-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.guide-nav__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-btn);
  background: none;
  color: var(--color-text);
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.guide-nav__btn:hover:not(:disabled) {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.guide-nav__btn:disabled {
  opacity: 0.35;
  cursor: default;
}

.guide-nav__btn--next {
  background: color-mix(in srgb, var(--color-text) 7%, var(--color-bg));
  transition:
    border-color 0.15s ease,
    color 0.15s ease,
    background 0.15s ease;
}

.guide-nav__btn--next:hover:not(:disabled) {
  background: color-mix(in srgb, var(--color-text) 10%, var(--color-bg));
}

@media (min-width: 860px) {
  .guide {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 36px;
    align-items: start;
  }

  .guide-outline {
    grid-column: 1;
    position: sticky;
    top: 32px;
  }

  .guide-content {
    grid-column: 2;
  }
}

@media (max-width: 859px) {
  .guide-outline {
    padding-bottom: 20px;
    border-bottom: 1px solid color-mix(in srgb, var(--color-border) 55%, transparent);
  }
}

@media (max-width: 640px) {
  .page--learn {
    padding: 24px 16px 40px;
  }

  .page--learn .page__header-row {
    flex-direction: column;
    align-items: stretch;
  }

  .page--learn .guide-nav {
    justify-content: flex-end;
  }

  .guide-outline__step {
    padding: 8px 12px;
    font-size: 13px;
  }
}