/* ═══════════════════════════════════════
   DESIGN TOKENS
   ═══════════════════════════════════════ */
.idpr-th {
  --bg:        #F1EEE8;
  --bg-2:      #FFFFFF;
  --bg-3:      #F6F3CE;
  --tan:       #D1C8A2;
  --tan-soft:  #E8E0BE;
  --brown:     #5D4829;
  --brown-dk:  #352815;
  --ink:       #1B1306;
  --green:     #1F3A2A;
  --green-dk:  #14271C;
  --green-lt:  #2D5240;
  --blue:      #015786;
  --blue-lt:   #0A6FA8;
  --gold:      #C2A73A;
  --gold-dk:   #A88E27;
  --gold-soft: #E9D979;
  --line:      #D8CDB4;
  --line-soft: #E5DCC4;

  background: var(--bg);
  color: var(--brown-dk);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.idpr-th *, .idpr-th *::before, .idpr-th *::after { box-sizing: border-box; }
.idpr-th a { color: var(--blue); text-decoration: underline; text-underline-offset: 2px; transition: color 0.15s; }
.idpr-th a:hover { color: var(--blue-lt); }
.idpr-th p { margin: 0 0 14px; }
.idpr-th img { max-width: 100%; height: auto; }

/* ═══════════════════════════════════════
   LAYOUT
   ═══════════════════════════════════════ */
.idpr-th__wrap       { max-width: 1240px; margin: 0 auto; padding: 0 32px; }
.idpr-th__wrap--narrow { max-width: 1080px; margin: 0 auto; padding: 0 32px; }

.idpr-th__eyebrow {
  font-weight: 800;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--brown);
  display: block;
}

/* ═══════════════════════════════════════
   BREADCRUMB
   ═══════════════════════════════════════ */
.idpr-th__crumb {
  padding: 22px 0 0;
  font-size: 13px;
  color: var(--brown);
}
.idpr-th__crumb a {
  color: var(--blue);
  text-decoration: none;
  font-weight: 700;
}
.idpr-th__crumb .sep {
  margin: 0 8px;
  color: var(--tan);
}

/* ═══════════════════════════════════════
   HERO
   ═══════════════════════════════════════ */
.idpr-th__hero {
  background:
    radial-gradient(60% 60% at 80% 20%, rgba(194,167,58,0.16), transparent 60%),
    radial-gradient(50% 60% at 10% 90%, rgba(1,87,134,0.18), transparent 70%),
    var(--brown-dk);
  color: #F1EEE8;
  padding: 60px 0 96px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--brown-dk);
}
.idpr-th__hero::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(125deg, rgba(255,255,255,0.025) 0 2px, transparent 2px 22px);
  pointer-events: none;
}

.idpr-th__hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 60px;
  align-items: end;
}

.idpr-th__hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--gold-soft);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  padding: 8px 14px;
  border: 1px solid rgba(233,217,121,0.35);
  border-radius: 999px;
  background: rgba(0,0,0,0.2);
}

.idpr-th__hero h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(42px, 5.5vw, 76px);
  line-height: 0.98;
  color: #fff;
  margin: 22px 0 0;
}
.idpr-th__hero h1 .accent {
  color: var(--gold-soft);
  font-style: italic;
}

.idpr-th__hero-sub {
  margin-top: 28px;
  font-size: 18px;
  color: #E8DFC8;
  max-width: 640px;
  line-height: 1.6;
}

.idpr-th__hero-side {
  background: rgba(0,0,0,0.25);
  border: 1px solid rgba(255,255,255,0.08);
  border-left: 3px solid var(--gold);
  padding: 22px 24px;
  border-radius: 4px;
  font-size: 13.5px;
  color: #E8DFC8;
  line-height: 1.6;
}
.idpr-th__hero-side strong {
  color: #fff;
  font-weight: 800;
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  text-transform: uppercase;
}

/* ═══════════════════════════════════════
   FOUNDERS
   ═══════════════════════════════════════ */
.idpr-th__founders {
  padding: 88px 0 60px;
  background: var(--bg);
}
.idpr-th__founders-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.idpr-th__founders h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(30px, 3.5vw, 42px);
  line-height: 1.1;
  margin: 14px 0 24px;
  color: var(--brown-dk);
}
.idpr-th__founders p {
  font-size: 17px;
  line-height: 1.7;
  color: var(--brown);
}
.idpr-th__founders p + p { margin-top: 18px; }

/* Photo placeholder */
.idpr-th__founders-photo {
  background: linear-gradient(135deg, var(--brown-dk), #1a1208);
  border-radius: 8px;
  aspect-ratio: 4 / 5;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding: 28px;
}
.idpr-th__founders-photo::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 30% 40%, rgba(233,217,121,0.18), transparent 50%),
    repeating-linear-gradient(45deg, rgba(255,255,255,0.02) 0 2px, transparent 2px 8px);
}
.idpr-th__founders-photo-svg {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  color: rgba(233,217,121,0.25);
}
.idpr-th__founders-photo .cap {
  position: relative;
  color: #E8DFC8;
  font-size: 13px;
}
.idpr-th__founders-photo .cap strong {
  display: block;
  color: #fff;
  font-weight: 800;
  font-size: 14px;
  margin-bottom: 2px;
}
.idpr-th__founders-photo .cap em {
  color: var(--gold-soft);
  font-style: normal;
  font-weight: 700;
}

/* Board card + quick links */
.idpr-th__board {
  margin-top: 40px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  background: var(--bg-2);
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  padding: 32px;
}
.idpr-th__board-text {
  font-size: 15.5px;
  color: var(--brown);
  line-height: 1.65;
}
.idpr-th__board-text h3,
.idpr-th__board-links h3 {
  font-family: var(--sans);
  font-size: 12px;
  text-transform: uppercase;
  color: var(--brown);
  margin: 0 0 12px;
  font-weight: 800;
}
.idpr-th__board-links {
  border-left: 1px solid var(--line-soft);
  padding-left: 32px;
}
.idpr-th__board-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 18px;
}
.idpr-th__board-links a {
  font-size: 14px;
  color: var(--brown-dk);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  font-weight: 700;
  transition: color 0.15s;
}
.idpr-th__board-links a::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--gold);
  transform: rotate(45deg);
  flex-shrink: 0;
}
.idpr-th__board-links a:hover { color: var(--blue); }

/* ═══════════════════════════════════════
   TIMELINE SECTION
   ═══════════════════════════════════════ */
.idpr-th__tl {
  background: var(--bg);
  padding: 80px 0 40px;
}
.idpr-th__tl-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 32px;
}
.idpr-th__tl-head h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(32px, 4vw, 50px);
  line-height: 1.05;
  color: var(--brown-dk);
  margin: 12px 0 18px;
}
.idpr-th__tl-head p {
  font-size: 17px;
  color: var(--brown);
  line-height: 1.65;
}
.idpr-th__tl-head .scroll-hint {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--blue);
  margin-top: 14px;
}

/* Era filter chips */
.idpr-th__filter {
  display: flex;
  justify-content: center;
  gap: 6px;
  padding: 6px;
  background: var(--bg-2);
  border: 1px solid var(--line-soft);
  max-width: fit-content;
  margin: 0 auto 56px;
  flex-wrap: wrap;
  box-shadow: 0 2px 12px rgba(53,40,21,0.04);
}
.idpr-th__filter-btn {
  border: 0;
  background: transparent;
  font-family: inherit;
  font-weight: 700;
  font-size: 16px;
  color: var(--brown);
  padding: 10px 18px;

  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.idpr-th__filter-btn:hover {
  background: var(--bg-3);
  color: var(--brown-dk);
}
.idpr-th__filter-btn.is-active {
  background: var(--green);
  color: #F2EAC9;
}
.idpr-th__filter-btn .count {
  display: inline-block;
  font-size: 11px;
  padding: 2px 7px;
  background: rgba(0,0,0,0.08);
  border-radius: 999px;
  font-weight: 800;
}
.idpr-th__filter-btn.is-active .count {
  background: rgba(255,255,255,0.18);
  color: var(--gold-soft);
}

/* ═══════════════════════════════════════
   TIMELINE RAIL
   ═══════════════════════════════════════ */
.idpr-th__rail {
  position: relative;
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 0 60px;
}
.idpr-th__rail::before {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  left: 50%;
  width: 2px;
  background: linear-gradient(to bottom, transparent 0%, var(--line) 6%, var(--line) 94%, transparent 100%);
  transform: translateX(-50%);
}

/* Each timeline row */
.idpr-th__row {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 120px 1fr;
  gap: 0;
  margin-bottom: 28px;
  align-items: start;
  /* Scroll-reveal: start hidden */
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.idpr-th__row.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.idpr-th__row.is-hidden { display: none; }

/* Year node (center column) */
.idpr-th__node {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  padding-top: 18px;
  grid-column: 2;
}
.idpr-th__node-year {
  background: var(--brown-dk);
  color: var(--gold-soft);
  font-family: var(--sans);
  font-weight: 800;
  font-size: 16px;
  padding: 9px 14px;
  white-space: nowrap;
  z-index: 2;
  border: 3px solid var(--bg);
  text-align: center;
  line-height: 1.05;
  min-width: 90px;
}
.idpr-th__node-year.era-native  { background: var(--green); }
.idpr-th__node-year.era-trail   { background: var(--brown-dk); }
.idpr-th__node-year.era-industry{ background: var(--blue); }
.idpr-th__node-year.era-modern  { background: var(--gold); color: var(--brown-dk); }
.idpr-th__node-year .small {
  display: block;
  font-size: 16px;
  font-weight: 700;
  opacity: 0.75;
  margin-top: 2px;
}

/* Card */
.idpr-th__card {
  background: var(--bg-2);
  border: 1px solid var(--line-soft);
/*   border-radius: 14px; */
  padding: 26px 28px;
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
}
.idpr-th__card:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
/*   box-shadow: 0 12px 28px rgba(53,40,21,0.08); */
}
.idpr-th__card.is-open {
  border-color: var(--green);
/*   box-shadow: 0 16px 36px rgba(31,58,42,0.14); */
}
.idpr-th__row--left .idpr-th__card  { grid-column: 1; margin-right: -1px; }
.idpr-th__row--right .idpr-th__card { grid-column: 3; margin-left: -1px;  }

/* Connector arm */
.idpr-th__card::before {
  content: "";
  position: absolute;
  top: 32px;
  width: 30px;
  height: 2px;
  background: var(--line);
  z-index: 1;
}
.idpr-th__row--left  .idpr-th__card::before { right: -30px; }
.idpr-th__row--right .idpr-th__card::before { left: -30px;  }

/* Era tag pill */
.idpr-th__card-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.idpr-th__card-tag.era-native  { background: rgba(31,58,42,0.1);   color: var(--green);   }
.idpr-th__card-tag.era-trail   { background: rgba(53,40,21,0.08);  color: var(--brown-dk); }
.idpr-th__card-tag.era-industry{ background: rgba(1,87,134,0.1);   color: var(--blue);     }
.idpr-th__card-tag.era-modern  { background: rgba(194,167,58,0.18); color: var(--gold-dk); }

.idpr-th__card h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 26px;
  line-height: 1.15;
  color: var(--brown-dk);
  margin: 0 0 12px;
}

/* Icon circle */
.idpr-th__card-icon {
  position: absolute;
  top: 22px;
  right: 24px;
  width: 38px; height: 38px;
  border-radius: 50%;
  background: var(--bg-3);
  color: var(--green);
  display: grid;
  place-items: center;
}

.idpr-th__card-summary {
  font-size: 15px;
  line-height: 1.6;
  color: var(--brown);
}

/* Toggle link */
.idpr-th__card-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  font-size: 12px;
  font-weight: 800;
  color: var(--blue);
  text-transform: uppercase;
  cursor: pointer;
  user-select: none;
}
.idpr-th__card-toggle svg {
  transition: transform 0.25s ease;
}
.idpr-th__card.is-open .idpr-th__card-toggle svg {
  transform: rotate(180deg);
}

/* Expandable detail */
.idpr-th__card-detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.idpr-th__card.is-open .idpr-th__card-detail {
  max-height: 600px;
}
.idpr-th__card-detail-inner {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  font-size: 14.5px;
  color: var(--brown);
  line-height: 1.7;
}
.idpr-th__card-detail-inner strong { color: var(--brown-dk); }

.idpr-th__card-detail-inner img {
	width: 100%!important
}

/* Milestone rows (dark cards) */
.idpr-th__row--milestone .idpr-th__card {
  background: var(--brown-dk);
  color: #E8DFC8;
  border-color: var(--brown-dk);
}
.idpr-th__row--milestone .idpr-th__card h3 { color: #fff; }
.idpr-th__row--milestone .idpr-th__card-summary { color: #E8DFC8; }
.idpr-th__row--milestone .idpr-th__card-tag {
  background: rgba(233,217,121,0.18);
  color: var(--gold-soft);
}
.idpr-th__row--milestone .idpr-th__card-icon {
  background: rgba(0,0,0,0.25);
  color: var(--gold-soft);
}
.idpr-th__row--milestone .idpr-th__card-toggle { color: var(--gold-soft); }
.idpr-th__row--milestone .idpr-th__card-detail-inner {
  border-top-color: rgba(255,255,255,0.08);
  color: #E8DFC8;
}

/* ═══════════════════════════════════════
   A250 CLOSER
   ═══════════════════════════════════════ */
.idpr-th__closer {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg) 60%, var(--brown-dk) 60%, var(--brown-dk) 100%);
  padding: 80px 0;
}
.idpr-th__closer-inner {
  background: var(--green);
  border-radius: 18px;
  padding: 56px;
  color: #F1EEE8;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.idpr-th__closer-inner::after {
  content: "250";
  position: absolute;
  right: -40px; bottom: -80px;
  font-family: var(--serif);
  font-size: 320px;
  line-height: 1;
  color: rgba(233,217,121,0.08);
  font-weight: 400;
  pointer-events: none;
}
.idpr-th__closer-tag {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--gold-soft);
  margin-bottom: 14px;
}
.idpr-th__closer h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.15;
  color: #fff;
  margin: 0 0 18px;
}
.idpr-th__closer p {
  color: #E8DFC8;
  font-size: 17px;
  line-height: 1.65;
  margin: 0;
}
.idpr-th__closer-cta {
  display: flex;
  flex-direction: column;
  gap: 14px;
  z-index: 1;
  position: relative;
}

/* Buttons */
.idpr-th__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 24px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 14px;
  text-decoration: none;
  transition: all 0.2s ease;
  font-family: inherit;
  cursor: pointer;
  border: 0;
}
.idpr-th__btn--gold {
  background: var(--gold);
  color: var(--brown-dk);
}
.idpr-th__btn--gold:hover {
  background: var(--gold-soft);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(194,167,58,0.3);
}
.idpr-th__btn--ghost {
  background: transparent;
  color: #E8DFC8;
  border: 1.5px solid rgba(255,255,255,0.3);
}
.idpr-th__btn--ghost:hover {
  border-color: var(--gold-soft);
  color: var(--gold-soft);
  transform: translateY(-1px);
}

/* ═══════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════ */
@media (max-width: 900px) {
  .idpr-th__hero-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .idpr-th__founders-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .idpr-th__board {
    grid-template-columns: 1fr;
  }
  .idpr-th__board-links {
    border-left: 0;
    padding-left: 0;
    padding-top: 24px;
    border-top: 1px solid var(--line-soft);
  }
  .idpr-th__board-links ul {
    grid-template-columns: 1fr;
  }
  .idpr-th__closer-inner {
    grid-template-columns: 1fr;
    padding: 36px;
  }

  /* Stack timeline to single column */
  .idpr-th__rail::before { left: 24px; }
  .idpr-th__row {
    grid-template-columns: 48px 1fr;
  }
  .idpr-th__node {
    grid-column: 1;
    grid-row: 1;
    padding-top: 22px;
    align-items: flex-start;
  }
  .idpr-th__node-year {
    font-size: 12px;
    padding: 6px 10px;
    min-width: auto;
	  white-space: normal;
  }
  .idpr-th__row--left .idpr-th__card,
  .idpr-th__row--right .idpr-th__card {
    grid-column: 2;
    grid-row: 1;
    margin: 0;
    margin-left: 24px;
  }
  .idpr-th__card::before {
    width: 18px;
    left: -18px !important;
    right: auto !important;
  }
  .idpr-th__card h3 { font-size: 22px; }
  .idpr-th__filter { border-radius: 14px; padding: 8px; }
}

@media (max-width: 480px) {
  .idpr-th__wrap { padding: 0 18px; }
  .idpr-th__hero { padding: 40px 0 56px; }
  .idpr-th__founders { padding: 48px 0 40px; }
  .idpr-th__tl { padding: 48px 0 24px; }
  .idpr-th__closer { padding: 48px 0; }
  .idpr-th__closer-inner { padding: 28px; }
  .idpr-th__card { padding: 20px 18px; }
}