/* Brief 03 → 04: recognition, training, physical-to-mental progression. */
.parent-story,
.method-story {
  --story-accent: var(--brand-red);
  --story-line: #49444a;
  min-width: 0;
}
.story-eyebrow {
  font-size: 14px;
  line-height: 1.5;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.parent-story {
  background: var(--ink);
  color: var(--white);
  padding-block: 100px 86px;
}
.parent-story-opening,
.parent-story-answer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: clamp(36px, 5vw, 80px);
}
.parent-story-heading .story-eyebrow { color: #c7c0bf; }
.parent-story h2 {
  font-size: clamp(45px, 4.1vw, 65px);
  line-height: 1.13;
  letter-spacing: -.045em;
  margin-top: 24px;
}
.parent-story h2 em {
  color: var(--story-accent);
  font-family: var(--serif);
  font-weight: 700;
  white-space: nowrap;
}
.parent-story-quotes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 36px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.parent-story-quotes li {
  border-top: 1px solid var(--story-line);
  padding: 19px 0 27px;
}
.parent-story-quotes p {
  font-size: clamp(19px, 1.5vw, 23px);
  line-height: 1.45;
  font-weight: 500;
  letter-spacing: -.015em;
}
.parent-story-answer {
  align-items: center;
  border-top: 1px solid var(--story-line);
  margin-top: 55px;
  padding-top: 48px;
}
.parent-story-answer h3 {
  font-size: clamp(38px, 3.6vw, 54px);
  line-height: 1.12;
  letter-spacing: -.045em;
}
.parent-story-answer h3 em {
  color: var(--story-accent);
  font-family: var(--serif);
  font-weight: 700;
}
.parent-story-answer > p {
  max-width: 620px;
  color: #ded9d4;
  font-size: 18px;
  line-height: 1.7;
}
.training-practice { margin-top: 54px; }
.training-practice > p { font-size: 16px; color: #c7c0bf; }
.training-sequence {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  padding: 0;
  margin: 27px 0 0;
  list-style: none;
}
.training-sequence li {
  position: relative;
  padding: 33px 20px 0 0;
  font-size: 17px;
  line-height: 1.5;
}
.training-sequence li::before {
  content: '';
  position: absolute;
  top: 7px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--story-line);
}
.training-sequence li:last-child::before { right: calc(100% - 16px); }
.training-sequence li::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 20px;
  height: 15px;
  background: var(--story-accent);
  clip-path: polygon(22% 0, 78% 0, 100% 50%, 78% 100%, 22% 100%, 0 50%);
}
.method-story { padding-block: 106px; }
.method-story-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(260px, .8fr);
  gap: 60px;
  align-items: end;
}
.method-story-heading h2 {
  margin-top: 24px;
  font-size: clamp(43px, 4.5vw, 70px);
  line-height: 1.1;
  letter-spacing: -.05em;
}
.method-story-heading h2 em { color: var(--red); }
.method-story-heading > p {
  font-size: 18px;
  line-height: 1.65;
  color: #625b57;
  padding-bottom: 4px;
  max-width: 370px;
}
.method-story .method-switcher {
  margin-top: 50px;
  border-bottom: 0;
}
.method-story .method-switcher [role='tablist'] {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}
.method-story .method-switcher button {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 100px;
  padding: 21px 30px;
  color: #625b57;
  gap: 20px;
}
.method-story .method-tab-copy {
  display: grid;
  gap: 6px;
  text-align: left;
  letter-spacing: 0;
}
.method-story .method-tab-copy strong {
  font-size: 28px;
  font-weight: 900;
  line-height: 1.1;
}
.method-story .method-tab-copy small {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.4;
}
.method-story .method-switcher button > .method-tab-arrow { font-size: 36px; font-weight: 300; }
.method-story .method-switcher button[aria-selected='true'] {
  background: var(--ink);
  color: var(--white);
}
.method-story .method-switcher button[aria-selected='true'] .method-tab-arrow { color: var(--story-accent); }
.method-story .method-switcher button::after { bottom: 0; background: var(--story-accent); height: 3px; }
.method-story .method-switcher button:focus-visible { outline-offset: -5px; }
.method-story .method-panels { margin-top: 0; }
.method-story .method-panel {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: stretch;
  gap: 0;
  color: var(--white);
  background: var(--ink);
  scroll-margin-top: 120px;
}
.method-story .method-panel figure {
  aspect-ratio: auto;
  min-height: 490px;
  position: relative;
}
.method-story .method-panel figure img {
  position: absolute;
  inset: 0;
  filter: none;
  object-position: center;
}
.method-film,
.advanced-story-film {
  position: relative;
  display: block;
  border: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: var(--ink);
  color: var(--white);
  overflow: hidden;
  text-align: left;
}
.method-story .method-film img { object-position: center 25%; }
.method-film::after,
.advanced-story-film::after {
  content: '';
  position: absolute;
  inset: 40% 0 0;
  background: linear-gradient(transparent, rgb(23 21 26 / 88%));
  pointer-events: none;
}
.method-film-cta {
  position: absolute;
  z-index: 1;
  bottom: 28px;
  left: 28px;
  right: 22px;
  display: flex;
  gap: 17px;
  align-items: center;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
}
.method-film-cta small { display: block; margin-top: 7px; font-size: 14px; line-height: 1.45; font-weight: 500; }
.story-play {
  display: grid;
  place-items: center;
  width: 55px;
  height: 55px;
  border: 1px solid #ffffff9c;
  border-radius: 50%;
  flex-shrink: 0;
}
.story-play svg { width: 23px; height: 23px; }
.method-film:focus-visible,
.advanced-story-film:focus-visible { outline-offset: -6px; }
@media (hover: hover) {
  .method-film:hover .story-play,
  .advanced-story-film:hover .story-play { background: var(--white); color: var(--ink); }
}
.method-story .method-description { padding: 45px clamp(28px, 3.5vw, 56px) 30px; }
.method-story .method-word { font-size: 14px; letter-spacing: .07em; color: var(--story-accent); }
.method-story .method-description h3 { font-size: clamp(34px, 3.3vw, 50px); margin-block: 21px; }
.method-story .method-description > p { font-size: 18px; line-height: 1.65; color: #ded9d4; max-width: 440px; }
.method-story .operations { border-color: var(--story-line); gap: 22px; margin-top: 24px; padding-top: 22px; }
.method-story .operations > span { font-size: 33px; color: var(--story-accent); }
.method-story .operations > p { font-size: 15px; color: #ded9d4; line-height: 1.5; }
.method-next-stage {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  width: 100%;
  min-height: 48px;
  margin-top: 24px;
  padding: 8px 0;
  border: 0;
  background: transparent;
  color: var(--white);
  text-align: left;
  font-size: 16px;
  font-weight: 700;
}
.method-next-stage svg { width: 24px; height: 24px; flex-shrink: 0; color: var(--story-accent); }
.method-next-stage:disabled { display: none; }
.method-nojs { padding: 32px 0; }
.method-nojs p { margin-top: 18px; }
.method-story .lab-intro { margin-top: 78px; padding-top: 42px; grid-template-columns: 1.5fr 1fr; }
.method-story .lab-intro h3 { font-size: clamp(34px, 3.5vw, 52px); line-height: 1.12; letter-spacing: -.04em; }
.method-story .lab-intro h3 em { font-family: var(--serif); font-weight: 700; }
.method-story .lab-intro > p { font-size: 18px; }
.method-story .sl-help,
.method-story .sl-status,
.method-story .sl-finish p { font-size: 17px; }
.method-story .sl-eyebrow,
.method-story .sl-progress,
.method-story .sl-column-labels,
.method-story .sl-instrument-caption,
.method-story .sl-reading-label,
.method-story .sl-equation { font-size: 14px; letter-spacing: .02em; }
.method-story .sl-hint-toggle,
.method-story .sl-hint,
.method-story .sl-actions button,
.method-story .sl-trial { font-size: 16px; }
.method-story .sl-hint-toggle,
.method-story .sl-actions button,
.method-story .sl-trial { min-height: 44px; }
.advanced-story {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
  grid-template-areas: 'heading film' 'copy film';
  align-items: start;
  gap: 28px 100px;
  border-top: 1px solid var(--line);
  padding-top: 60px;
  margin-top: 80px;
}
.advanced-story-heading { grid-area: heading; }
.advanced-story-heading h3 { font-size: clamp(40px, 4.2vw, 62px); line-height: 1.08; letter-spacing: -.045em; margin-top: 24px; }
.advanced-story-heading h3 em { color: var(--red); }
.advanced-story-copy { grid-area: copy; max-width: 620px; }
.advanced-story-film { grid-area: film; aspect-ratio: 4 / 5; height: auto; align-self: center; }
.advanced-story-film img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 45%; }
.advanced-story-copy > p { font-size: 17px; line-height: 1.65; color: #625b57; }
.advanced-story-copy > .advanced-story-lead { font-size: 23px; line-height: 1.4; font-weight: 700; color: var(--ink); margin-bottom: 22px; }
.advanced-story-copy details { border-block: 1px solid var(--line); margin-top: 24px; }
.advanced-story-copy summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 64px; padding: 12px 0; list-style: none; cursor: pointer; font-size: 17px; font-weight: 700; }
.advanced-story-copy summary::-webkit-details-marker { display: none; }
.advanced-story-copy summary > span { font-size: 30px; font-weight: 300; color: var(--red); transition: transform .2s; }
.advanced-story-copy details[open] summary > span { transform: rotate(45deg); }
.advanced-story-copy details p { font-size: 17px; line-height: 1.65; padding: 0 0 22px; }
.advanced-story-copy > .advanced-story-conclusion { font-size: 20px; line-height: 1.5; margin-top: 26px; color: var(--ink); }
.standards-section .chapter,
.standards-section .all-standards summary small,
.standards-section .all-standards li::before { font-size: 14px; }
.standards-section .all-standards li { font-size: 17px; }

@media (max-width: 1100px) {
  .parent-story-opening, .parent-story-answer { gap: 38px; }
  .parent-story-quotes { gap: 0 26px; }
  .method-story-heading { grid-template-columns: 1fr; gap: 26px; }
  .method-story-heading > p { max-width: 620px; }
  .method-story .method-panel { grid-template-columns: 1fr 1fr; }
  .method-story .method-description { padding: 32px 28px 23px; }
  .method-story .operations { display: block; }
  .method-story .operations > p { margin-top: 10px; }
  .advanced-story { gap: 28px 45px; }
}
@media (max-width: 760px) {
  .parent-story { padding-block: 66px; }
  .parent-story-opening, .parent-story-answer { grid-template-columns: 1fr; gap: 32px; }
  .parent-story h2 { font-size: clamp(37px, 7.6vw, 54px); margin-top: 18px; }
  .parent-story-quotes { grid-template-columns: 1fr; gap: 0; }
  .parent-story-quotes li { padding: 17px 0; }
  .parent-story-quotes p { font-size: 20px; line-height: 1.45; max-width: 540px; }
  .parent-story-answer { margin-top: 22px; padding-top: 32px; gap: 23px; }
  .parent-story-answer h3 { font-size: clamp(36px, 7.5vw, 47px); }
  .parent-story-answer > p { font-size: 17px; line-height: 1.65; }
  .training-practice { margin-top: 32px; }
  .training-practice > p { font-size: 16px; line-height: 1.6; }
  .training-sequence { grid-template-columns: 1fr; margin-top: 22px; }
  .training-sequence li { padding: 0 0 20px 35px; min-height: 48px; font-size: 17px; }
  .training-sequence li:last-child { padding-bottom: 0; }
  .training-sequence li br { display: none; }
  .training-sequence li span { display: block; max-width: 450px; }
  .training-sequence li::before { top: 12px; bottom: -12px; left: 9px; right: auto; width: 1px; height: auto; }
  .training-sequence li:last-child::before { display: none; }
  .training-sequence li::after { top: 5px; }
  .method-story { padding-block: 66px; }
  .method-story-heading { gap: 22px; }
  .method-story-heading h2 { font-size: clamp(34px, 6.5vw, 50px); letter-spacing: -.045em; line-height: 1.15; margin-top: 20px; }
  .method-story-heading > p { font-size: 17px; }
  .method-story .method-switcher { margin-top: 30px; }
  .method-story .method-switcher button { padding: 18px 16px; min-height: 106px; align-items: start; gap: 8px; }
  .method-story .method-tab-copy strong { font-size: 25px; }
  .method-story .method-tab-copy small { font-size: 14px; line-height: 1.4; max-width: 150px; }
  .method-story .method-switcher button > .method-tab-arrow { display: none; }
  .method-story .method-panel { grid-template-columns: 1fr; scroll-margin-top: 95px; }
  .method-story .method-panel figure { aspect-ratio: 1.5; min-height: 0; }
  .method-story .method-panel .method-film-figure { aspect-ratio: 1.12; }
  .method-film-cta { bottom: 20px; left: 20px; right: 20px; gap: 14px; font-size: 18px; }
  .story-play { width: 47px; height: 47px; }
  .method-story .method-description { padding: 27px 24px 22px; }
  .method-story .method-description h3 { font-size: 37px; margin-block: 17px 20px; }
  .method-story .method-description > p { font-size: 17px; max-width: 100%; }
  .method-story .operations { display: flex; gap: 22px; margin-top: 23px; padding-top: 20px; }
  .method-story .operations > span { font-size: 27px; }
  .method-story .operations > p { margin: 0; font-size: 14px; }
  .method-next-stage { font-size: 16px; margin-top: 20px; }
  .method-story .lab-intro { display: block; margin-top: 52px; padding-top: 30px; }
  .method-story .lab-intro h3 { font-size: clamp(32px, 6.6vw, 43px); margin-top: 0; }
  .method-story .lab-intro > p { font-size: 17px; margin-top: 20px; }
  .concept .method-story .sl-lab { padding-inline: 22px; margin-inline: 0; }
  .method-story .sl-intro-line { flex-wrap: wrap; row-gap: 10px; }
  .concept .method-story .sl-column-labels { font-size: 14px; }
  .concept .method-story .sl-instrument-caption { font-size: 14px; flex-wrap: wrap; gap: 5px 12px; }
  .method-story .sl-actions { flex-wrap: wrap; row-gap: 10px; }
  .advanced-story { grid-template-columns: 1fr; grid-template-areas: 'heading' 'film' 'copy'; gap: 26px; margin-top: 52px; padding-top: 34px; }
  .advanced-story-heading h3 { font-size: clamp(39px, 8vw, 52px); margin-top: 20px; }
  .advanced-story-copy { padding-top: 0; }
  .advanced-story-copy > .advanced-story-lead { font-size: 21px; }
}
@media (max-width: 360px) {
  .method-story .method-switcher button { padding-inline: 12px; }
  .method-story .method-description { padding-inline: 19px; }
  .method-story .method-description h3 { font-size: 32px; }
  .method-story .operations { flex-wrap: wrap; gap: 8px 20px; }
  .concept .method-story .sl-lab { padding-inline: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  .method-story .method-switcher button::after,
  .advanced-story-copy summary > span { transition: none; }
}