/* ============================================================
   소개(about) 섹션 공용 스타일 — story / people / impact 공유
   ============================================================ */

/* ---- story ---- */
.story-intro { max-width: var(--container-max); margin: 0 auto; padding: 40px var(--container-pad); }
@media (min-width: 768px) { .story-intro { padding: 80px var(--container-pad); } }
.story-intro__grid { display: grid; grid-template-columns: 1fr; gap: 32px; align-items: start; }
@media (min-width: 1080px) { .story-intro__grid { grid-template-columns: 1.2fr 1fr; gap: 56px; } }
.story-intro__text { display: flex; flex-direction: column; gap: 18px; }
.story-intro__heading { font-size: 24px; font-weight: 800; color: var(--ink); line-height: 1.35; }
@media (min-width: 768px) { .story-intro__heading { font-size: 32px; } }
.story-intro__text p { font-size: 15px; line-height: 1.8; color: var(--ink-soft); }
@media (min-width: 768px) { .story-intro__text p { font-size: 16.5px; } }
.story-intro__media { display: flex; flex-direction: column; gap: 20px; align-items: center; }
.story-intro__badge {
  width: 96px; height: 96px; border-radius: 50%; background: #fff; display: flex;
  align-items: center; justify-content: center; box-shadow: 0 8px 20px oklch(20% 0.05 255 / 0.15);
  margin-top: 6px;
}
.story-intro__badge img { width: 86%; height: 86%; object-fit: contain; }
.story-intro__collage { display: flex; gap: 10px; width: 100%; }
.story-intro__collage > * { flex: 1; aspect-ratio: 4/3; width: 100%; object-fit: cover; }

.story-vision { background: var(--surface-soft); padding: 40px var(--container-pad); }
@media (min-width: 768px) { .story-vision { padding: 80px var(--container-pad); } }
.story-vision__grid { max-width: var(--container-max); margin: 0 auto; display: grid; grid-template-columns: 1fr; gap: 36px; align-items: start; }
@media (min-width: 1080px) { .story-vision__grid { grid-template-columns: 0.9fr 1.1fr; gap: 64px; } }
.story-vision__list { display: flex; flex-direction: column; gap: 4px; }
.story-vision__item { display: flex; gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--hair); align-items: flex-start; }
.story-vision__icon {
  width: 42px; height: 42px; min-width: 42px; border-radius: 50%; border: 1.5px solid var(--blue);
  color: var(--blue); display: flex; align-items: center; justify-content: center; font-weight: 800;
}
.story-vision__title { font-size: 17px; font-weight: 800; color: var(--ink); margin-bottom: 6px; }
.story-vision__desc { font-size: 14px; line-height: 1.7; color: var(--ink-soft); }
.story-history { display: flex; flex-direction: column; gap: 22px; }
.story-history__heading { font-size: 22px; font-weight: 800; line-height: 1.35; color: var(--ink); max-width: 620px; word-break: keep-all; }
@media (min-width: 768px) { .story-history__heading { font-size: 28px; } }
.story-history__row { display: flex; flex-direction: column; gap: 18px; }
@media (min-width: 640px) { .story-history__row { flex-direction: row; gap: 24px; align-items: flex-start; } }
.story-history__text { display: flex; flex-direction: column; gap: 14px; max-width: 480px; }
@media (min-width: 640px) { .story-history__text { flex: 0 0 65%; max-width: none; } }
.story-history__text p { font-size: 15px; line-height: 1.8; color: var(--ink-soft); margin: 0; }
.story-history__portrait { width: 140px; aspect-ratio: 3/4; align-self: center; }
@media (min-width: 640px) { .story-history__portrait { flex: 0 0 35%; width: auto; max-width: 180px; align-self: flex-start; } }

/* ---- people ---- */
.people-section { max-width: var(--container-max); margin: 0 auto; padding: 40px var(--container-pad) 24px; }
@media (min-width: 768px) { .people-section { padding: 80px var(--container-pad) 40px; } }
.people-section--advisors { padding-top: 24px; padding-bottom: 56px; }
@media (min-width: 768px) { .people-section--advisors { padding-top: 40px; padding-bottom: 96px; } }
.people-section__heading { font-size: 22px; font-weight: 800; color: var(--ink); margin: 0 0 32px; text-align: center; }
@media (min-width: 768px) { .people-section__heading { font-size: 28px; } }
.people-grid--board { display: flex; flex-wrap: wrap; justify-content: center; align-items: flex-start; gap: 28px; max-width: 900px; margin: 0 auto; }
@media (min-width: 768px) { .people-grid--board { gap: 40px; } }
.people-grid--advisors { display: flex; flex-wrap: wrap; justify-content: center; align-items: flex-start; gap: 28px; }
@media (min-width: 768px) { .people-grid--advisors { gap: 40px; } }
.people-card { display: flex; flex-direction: column; align-items: center; gap: 8px; text-align: center; width: 190px; }
.people-card__photo { border-radius: 50%; overflow: hidden; }
.people-card__photo--board { width: 120px; height: 120px; }
@media (min-width: 768px) { .people-card__photo--board { width: 150px; height: 150px; } }
.people-card__photo--advisor { width: 120px; height: 120px; }
@media (min-width: 768px) { .people-card__photo--advisor { width: 150px; height: 150px; } }
.people-card__photo--icon { background: var(--surface-soft); display: flex; align-items: center; justify-content: center; color: var(--ink-soft); }
.people-card__photo--icon svg { width: 46%; height: 46%; }

/* 범용 사람 실루엣 프로필 아이콘 — 사진 대신 쓰는 공용 컴포넌트.
   width/height/aspect-ratio/flex-shrink를 모두 명시해서 flex 안에서도
   찌그러지지 않게 한다 (기존 .img-placeholder의 min-height:120px가
   height:44px보다 우선 적용되어 세로로 늘어지던 문제의 대체). */
.avatar-icon {
  width: 56px; height: 56px; aspect-ratio: 1 / 1; flex-shrink: 0; border-radius: 50%;
  background: var(--surface-soft); display: flex; align-items: center; justify-content: center;
  color: var(--blue-deep);
}
.avatar-icon svg { width: 52%; height: 52%; }

/* ---- impact: testimonial cards ---- */
.impact-testimonial-card__person { display: flex; align-items: center; gap: 16px; margin-top: 4px; }
.impact-testimonial-card__name { font-size: 14px; font-weight: 800; color: var(--ink); }
.impact-testimonial-card__role { font-size: 12px; color: var(--ink-soft); margin-top: 2px; }
.people-card__name { font-size: 16px; font-weight: 800; color: var(--ink); margin-top: 6px; line-height: 1.35; min-height: calc(16px * 1.35 * 2); display: flex; flex-direction: column; justify-content: center; word-break: keep-all; overflow-wrap: normal; }
.people-card__name span { font-weight: 600; color: var(--ink-soft); font-size: 13px; }
.people-card__role { font-size: 13px; color: var(--ink-soft); line-height: 1.5; min-height: calc(13px * 1.5 * 2); word-break: keep-all; overflow-wrap: normal; }
.people-card__role a { color: var(--ink-soft); text-decoration: none; }
.people-card__role a:hover { text-decoration: underline; }
.people-card__email { font-size: 12.5px; }
.people-card__email a { color: var(--ink-soft); text-decoration: none; }
.people-card__email a:hover { text-decoration: underline; }

/* ---- impact ---- */
.impact-hero { background: var(--blue-deep); padding: 40px var(--container-pad); text-align: center; }
@media (min-width: 768px) { .impact-hero { padding: 72px var(--container-pad); } }
.impact-hero__heading { font-size: 24px; font-weight: 800; color: var(--paper); margin: 0 0 12px; }
@media (min-width: 768px) { .impact-hero__heading { font-size: 32px; } }
.impact-hero__sub { font-size: 14px; color: oklch(85% 0.01 255); max-width: 640px; margin: 0 auto; line-height: 1.7; }
.impact-stats { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; max-width: var(--container-max); margin: 32px auto 0; }
@media (min-width: 768px) { .impact-stats { grid-template-columns: repeat(4,1fr); margin-top: 48px; } }
.impact-stat { text-align: center; }
.impact-stat__num { font-size: 26px; font-weight: 800; color: var(--amber); }
@media (min-width: 768px) { .impact-stat__num { font-size: 32px; } }
.impact-stat__label { font-size: 12px; color: oklch(85% 0.01 255); margin-top: 4px; }

.impact-section { max-width: var(--container-max); margin: 0 auto; padding: 32px var(--container-pad); }
@media (min-width: 768px) { .impact-section { padding: 64px var(--container-pad); } }
.impact-section__heading { font-size: 20px; font-weight: 800; color: var(--ink); margin: 0 0 24px; text-align: center; }
@media (min-width: 768px) { .impact-section__heading { font-size: 26px; } }

.impact-timeline { max-width: 900px; margin: 0 auto; display: flex; flex-direction: column; gap: 4px; }
.impact-timeline__item { display: flex; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--hair); }
.impact-timeline__year { font-size: 15px; font-weight: 800; color: var(--blue); min-width: 90px; }
.impact-timeline__desc { font-size: 13.5px; line-height: 1.6; color: var(--ink-soft); }

.impact-standards { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 768px) { .impact-standards { grid-template-columns: repeat(3,1fr); } }
.impact-standard-card { border: 1px solid var(--hair); border-radius: 6px; padding: 20px; background: var(--paper); }
.impact-standard-card__title { font-size: 15px; font-weight: 800; color: var(--ink); margin-bottom: 8px; }
.impact-standard-card__desc { font-size: 13px; line-height: 1.6; color: var(--ink-soft); }

.impact-research { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 768px) { .impact-research { grid-template-columns: repeat(4,1fr); } }
.impact-research-card { text-align: center; border: 1px solid var(--hair); border-radius: 6px; padding: 20px; background: #FFFFFF; }
.impact-research-card img { height: 40px; margin: 0 auto 12px; object-fit: contain; }
.impact-research-card__text { font-size: 12.5px; line-height: 1.6; color: var(--ink-soft); }

.impact-interviews { display: flex; flex-direction: column; gap: 16px; max-width: 800px; margin: 0 auto; }
.impact-interview { border-left: 3px solid var(--teal); padding: 4px 0 4px 18px; }
.impact-interview__quote { font-size: 14.5px; line-height: 1.7; color: var(--ink); font-style: italic; }
.impact-interview__who { font-size: 12.5px; color: var(--ink-soft); margin-top: 8px; }

/* ---- impact: H1 collage + stats panel ---- */
.impact-h1 { max-width: var(--container-max); margin: 0 auto; padding: 32px var(--container-pad); }
@media (min-width: 768px) { .impact-h1 { padding: 64px var(--container-pad); } }
.impact-h1__grid { display: flex; flex-direction: column; gap: 0; }
.impact-h1__bg { display: none; }
@media (min-width: 1080px) {
  .impact-h1__grid { position: relative; min-height: 460px; }
  .impact-h1__bg { display: block; position: absolute; inset: 0; width: 100%; height: 100%; }
}
.impact-h1__panel { background: var(--blue-deep); color: var(--paper); padding: 28px 24px; display: flex; flex-direction: column; gap: 28px; justify-content: center; }
@media (min-width: 768px) { .impact-h1__panel { padding: 48px 44px; } }
@media (min-width: 1080px) {
  .impact-h1__panel { position: absolute; top: 0; right: 0; bottom: 0; width: 50%; background: rgba(5, 39, 78, 0.89); padding: 56px 56px; }
}
.impact-h1__message { font-size: 19px; font-weight: 700; line-height: 1.5; margin: 0; }
@media (min-width: 768px) { .impact-h1__message { font-size: 23px; } }
.impact-h1__stats-row { display: flex; flex-direction: column; gap: 20px; }
@media (min-width: 768px) { .impact-h1__stats-row { flex-direction: row; gap: 28px; } }
.impact-h1__stat-num { font-size: 34px; font-weight: 800; color: var(--amber); }
.impact-h1__stat-label { font-size: 13px; line-height: 1.6; color: oklch(85% 0.02 255); margin-top: 8px; }

/* ---- impact: decade history ---- */
.impact-decades { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--container-pad) 32px; }
@media (min-width: 768px) { .impact-decades { padding: 0 var(--container-pad) 64px; } }
.impact-decades__intro { font-size: 15px; line-height: 1.8; color: var(--ink-soft); margin: 0 0 32px; max-width: 820px; }
.impact-decades__grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px; margin-bottom: 24px; }
@media (min-width: 768px) { .impact-decades__grid { grid-template-columns: repeat(3,1fr); } }
@media (min-width: 1080px) { .impact-decades__grid { grid-template-columns: repeat(6,1fr); } }
.decade-card { border: 1px solid var(--hair); border-top: 3px solid var(--blue); border-radius: 6px; padding: 16px 14px; display: flex; flex-direction: column; gap: 6px; background: var(--paper); }
.decade-card__label { font-size: 15px; font-weight: 800; color: var(--blue); margin-bottom: 4px; }
.decade-card__topic { font-size: 12.5px; line-height: 1.5; color: var(--ink-soft); }

.impact-decades details { margin-top: 8px; }
.impact-decades summary {
  display: block; text-align: center; background: none; border: 1px solid var(--blue); color: var(--blue);
  font-size: 13.5px; font-weight: 700; padding: 11px 22px; border-radius: 4px; cursor: pointer; width: fit-content;
  margin: 0 auto; list-style: none;
}
.impact-decades summary::-webkit-details-marker { display: none; }
.impact-decades__full { margin-top: 24px; display: flex; flex-direction: column; gap: 24px; }
.impact-decades__block { border-top: 2px solid var(--hair); padding-top: 16px; }
.impact-decades__block-heading { font-size: 15px; font-weight: 800; color: var(--blue-deep); margin-bottom: 10px; }
.impact-decades__year-row { display: grid; grid-template-columns: 52px 1fr; gap: 12px; padding: 6px 0; align-items: baseline; }
@media (min-width: 768px) { .impact-decades__year-row { grid-template-columns: 64px 1fr; } }
.impact-decades__year { font-size: 13px; font-weight: 800; color: var(--ink); }
.impact-decades__topics { font-size: 12.5px; line-height: 1.6; color: var(--ink-soft); }

/* ---- impact: stats photo band ---- 홈(index.html)의 .home-stats 4분할 hover 컴포넌트를 그대로 재사용(css/home.css). 여기서는 별도 CSS 없음. */

/* ---- impact: classroom fit (H4) ---- */
.impact-classroom { max-width: var(--container-max); margin: 0 auto; padding: 32px var(--container-pad); }
@media (min-width: 768px) { .impact-classroom { padding: 64px var(--container-pad); } }
.impact-classroom__grid { display: grid; grid-template-columns: 1fr; gap: 28px; align-items: center; }
@media (min-width: 1080px) { .impact-classroom__grid { grid-template-columns: 1fr 1fr; gap: 56px; } }
.impact-classroom__collage { display: flex; gap: 8px; }
.impact-classroom__tall { flex: 1.2; aspect-ratio: 3/4; }
.impact-classroom__stack { flex: 1; display: flex; flex-direction: column; gap: 8px; }
.impact-classroom__stack > * { flex: 1; aspect-ratio: 4/3; }
.impact-classroom__text { display: flex; flex-direction: column; gap: 16px; }
.impact-classroom__heading { font-size: 22px; font-weight: 800; color: var(--ink); }
@media (min-width: 768px) { .impact-classroom__heading { font-size: 27px; } }
.impact-classroom__text p { font-size: 14.5px; line-height: 1.8; color: var(--ink-soft); }
@media (min-width: 768px) { .impact-classroom__text p { font-size: 15.5px; } }

/* ---- impact: future careers (H5) ---- */
.impact-careers { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--container-pad) 32px; }
@media (min-width: 768px) { .impact-careers { padding: 0 var(--container-pad) 64px; } }
.impact-careers__grid { display: grid; grid-template-columns: 1fr; gap: 20px; align-items: stretch; }
@media (min-width: 1080px) { .impact-careers__grid { grid-template-columns: 0.9fr 2fr; gap: 28px; } }
.impact-careers__photo { width: 100%; min-height: 180px; aspect-ratio: 4/3; }
@media (min-width: 1080px) { .impact-careers__photo { aspect-ratio: auto; min-height: 100%; } }
.impact-careers__panel { background: var(--blue-deep); color: var(--paper); padding: 24px; display: flex; flex-direction: column; gap: 16px; justify-content: center; border-radius: 4px; }
@media (min-width: 768px) { .impact-careers__panel { padding: 36px 44px; } }
.impact-careers__heading { font-size: 19px; font-weight: 800; margin: 0; line-height: 1.5; }
@media (min-width: 768px) { .impact-careers__heading { font-size: 23px; } }
.impact-careers__body { font-size: 14px; line-height: 1.8; color: oklch(85% 0.02 255); margin: 0; }
.impact-careers__highlight { font-size: 14px; line-height: 1.8; color: var(--amber); font-weight: 700; margin: 0; }
.impact-careers__footer { margin-top: 24px; display: flex; flex-direction: column; gap: 12px; }
@media (min-width: 768px) { .impact-careers__footer { margin-top: 36px; } }
.impact-careers__footer-heading { font-size: 18px; font-weight: 800; color: var(--ink); margin: 0; }
@media (min-width: 768px) { .impact-careers__footer-heading { font-size: 21px; } }

/* ---- impact: closing ---- */
.impact-closing { max-width: 760px; margin: 0 auto; text-align: center; }
.impact-closing__message { font-size: 15px; line-height: 1.8; color: var(--ink-soft); margin: 0 0 20px; }
@media (min-width: 768px) { .impact-closing__message { font-size: 17px; } }
.impact-closing__heading { font-size: 22px; font-weight: 800; color: var(--ink); margin: 0; }
@media (min-width: 768px) { .impact-closing__heading { font-size: 26px; } }