.tutustu-page {
  --thread-learning: #a9472c;
  --thread-digital: #08766f;
  --thread-work: #8a651b;
  --thread-technology: #3f6878;
  overflow-x: clip;
  background: #fffdf9;
}

.tutustu-header .header-inner {
  grid-template-columns: 1fr auto;
}

.tutustu-header .library-link {
  display: inline-flex;
  color: var(--teal);
}

.tutustu-header {
  background: rgba(255, 253, 249, 0.9);
}

.tutustu-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(92px, 11vw, 148px) 0 0;
  background:
    radial-gradient(circle at 86% 14%, rgba(8, 118, 111, 0.11), transparent 24%),
    radial-gradient(circle at 70% 72%, rgba(169, 71, 44, 0.08), transparent 28%),
    #fffdf9;
}

.tutustu-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 5% -6% -18% 42%;
  opacity: 0.78;
  background:
    radial-gradient(circle at 13% 24%, var(--thread-learning) 0 4px, transparent 5px),
    radial-gradient(circle at 54% 18%, var(--thread-digital) 0 5px, transparent 6px),
    radial-gradient(circle at 80% 60%, var(--thread-work) 0 4px, transparent 5px),
    radial-gradient(circle at 44% 78%, var(--thread-technology) 0 4px, transparent 5px);
}

.tutustu-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: 4%;
  right: -8%;
  width: min(56vw, 760px);
  aspect-ratio: 1;
  border: 1px solid rgba(8, 118, 111, 0.17);
  border-radius: 48% 52% 44% 56%;
  box-shadow:
    -75px 55px 0 -74px rgba(169, 71, 44, 0.28),
    -145px 125px 0 -144px rgba(63, 104, 120, 0.24);
  transform: rotate(-14deg);
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.62fr);
  gap: clamp(48px, 8vw, 112px);
  align-items: center;
}

.tutustu-hero h1 {
  max-width: 920px;
  margin: 0;
  font-size: clamp(3.2rem, 7.2vw, 7.35rem);
  line-height: 0.92;
}

.hero-intro {
  margin: 38px 0 8px;
  padding-left: 24px;
  border-left: 3px solid var(--thread-learning);
  color: var(--ink);
  font-size: clamp(1rem, 1.35vw, 1.16rem);
}

.experience-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: clamp(72px, 10vw, 126px);
  border-top: 1px solid rgba(23, 52, 58, 0.14);
}

.experience-nav a {
  display: flex;
  min-height: 96px;
  align-items: center;
  gap: 14px;
  padding: 18px 26px;
  border-right: 1px solid rgba(23, 52, 58, 0.12);
  border-bottom: 4px solid transparent;
  color: var(--ink);
  font-weight: 750;
  text-decoration: none;
}

.experience-nav a:last-child {
  border-right: 0;
}

.experience-nav a:hover,
.experience-nav a:focus-visible {
  border-bottom-color: var(--teal);
  background: rgba(230, 238, 232, 0.5);
}

.experience-nav span,
.era-number,
.scenario-number {
  color: var(--copper);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.search-section,
.timeline-section,
.scenarios-section {
  padding: clamp(96px, 11vw, 148px) 0;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.58fr);
  gap: 84px;
  align-items: end;
  margin-bottom: 54px;
}

.section-heading h2 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(2.7rem, 5.4vw, 5.75rem);
  line-height: 0.98;
}

.section-heading > p {
  margin: 0 0 6px;
  color: var(--ink-soft);
}

.search-section {
  background: #f1f7f4;
}

.search-panel {
  overflow: hidden;
  border: 0;
  border-radius: 4px 34px 34px 34px;
  background: var(--white);
  box-shadow: 0 30px 80px rgba(20, 49, 54, 0.1);
}

.problem-search {
  padding: clamp(34px, 6vw, 72px);
}

.problem-search label {
  display: block;
  margin-bottom: 14px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.45rem, 2.4vw, 2rem);
}

.search-control {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
}

.search-control input {
  width: 100%;
  min-height: 72px;
  padding: 16px 22px;
  border: 0;
  border-bottom: 2px solid var(--ink);
  border-radius: 0;
  background: #f6f8f5;
  color: var(--ink);
  font: inherit;
  font-size: 1rem;
}

.search-control input::placeholder {
  color: #667b7f;
}

.search-control input:focus-visible {
  outline: 3px solid var(--copper);
  outline-offset: 3px;
  border-color: transparent;
}

.search-control button {
  min-height: 72px;
  padding: 14px 30px;
  border: 0;
  border-radius: 0 18px 18px 0;
  background: var(--teal);
  color: var(--white);
  cursor: pointer;
  font-weight: 800;
}

.search-examples {
  margin-top: 28px;
}

.search-examples > p {
  margin: 0 0 12px;
  color: var(--ink-soft);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.search-examples > div {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.search-examples button,
.timeline-filters button {
  min-height: 44px;
  padding: 11px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  text-align: left;
}

.search-examples button:hover,
.search-examples button:focus-visible,
.timeline-filters button:hover,
.timeline-filters button:focus-visible {
  border-color: var(--teal);
  background: var(--mint-light);
  color: var(--ink);
}

.search-examples button {
  min-height: 68px;
  border-radius: 12px;
  background: #f7faf8;
  font-size: 0.82rem;
  font-weight: 700;
}

.search-output:not([hidden]) {
  display: block;
  padding: clamp(28px, 5vw, 58px);
  border-top: 5px solid var(--teal);
  background: #f8fbf9;
}

.results-heading {
  margin-bottom: 28px;
}

.results-heading h3 {
  margin: 0;
  font-size: clamp(1.8rem, 3.2vw, 3rem);
}

.search-results {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 44px;
  border-top: 1px solid var(--line);
}

.search-result {
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
}

.search-result h3 {
  margin: 0 0 10px;
  font-size: 1.35rem;
}

.search-result > p {
  color: var(--ink-soft);
}

.result-evidence {
  margin: 20px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.result-evidence strong {
  display: block;
  margin-bottom: 5px;
  color: var(--teal-dark);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.search-empty {
  padding: 22px;
  border-left: 3px solid var(--copper);
  background: rgba(255, 255, 255, 0.5);
}

.search-empty p,
.no-script-note {
  margin: 0;
}

.timeline-section {
  background:
    linear-gradient(90deg, rgba(169, 71, 44, 0.035), transparent 22%),
    #fffdf9;
}

.timeline-filters {
  display: grid;
  grid-template-columns: 0.72fr 1.05fr 1.65fr 1.65fr 1.72fr;
  gap: 10px;
  margin-bottom: 54px;
  padding: 12px;
  border: 1px solid rgba(23, 52, 58, 0.11);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 16px 42px rgba(20, 49, 54, 0.06);
}

.timeline-instruction {
  margin-top: -18px;
  margin-bottom: 24px;
  color: var(--ink-soft);
}

.timeline-filters button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-color: transparent;
  background: transparent;
  font-weight: 750;
  justify-content: center;
  line-height: 1.25;
  text-align: center;
}

.timeline-filters button.is-active {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--white);
  box-shadow: 0 8px 20px rgba(20, 49, 54, 0.16);
}

.timeline-filters button[data-thread-filter="learning"][aria-pressed="true"] {
  border-color: var(--thread-learning);
  background: var(--thread-learning);
}

.timeline-filters button[data-thread-filter="digital"][aria-pressed="true"] {
  border-color: var(--thread-digital);
  background: var(--thread-digital);
}

.timeline-filters button[data-thread-filter="work"][aria-pressed="true"] {
  border-color: var(--thread-work);
  background: var(--thread-work);
}

.timeline-filters button[data-thread-filter="technology"][aria-pressed="true"] {
  border-color: var(--thread-technology);
  background: var(--thread-technology);
}

.thread-dot {
  width: 10px;
  height: 10px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: currentColor;
}

.thread-dot.learning,
[data-thread-tag="learning"] {
  --thread-color: var(--thread-learning);
}

.thread-dot.digital,
[data-thread-tag="digital"] {
  --thread-color: var(--thread-digital);
}

.thread-dot.work,
[data-thread-tag="work"] {
  --thread-color: var(--thread-work);
}

.thread-dot.technology,
[data-thread-tag="technology"] {
  --thread-color: var(--thread-technology);
}

.thread-dot {
  background: var(--thread-color);
}

.braided-timeline {
  --active-thread-color: var(--teal);
  display: grid;
  grid-template-columns: minmax(150px, 190px) minmax(0, 1fr);
  gap: clamp(30px, 5vw, 72px);
  align-items: start;
}

.braided-timeline[data-thread="learning"] { --active-thread-color: var(--thread-learning); }
.braided-timeline[data-thread="digital"] { --active-thread-color: var(--thread-digital); }
.braided-timeline[data-thread="work"] { --active-thread-color: var(--thread-work); }
.braided-timeline[data-thread="technology"] { --active-thread-color: var(--thread-technology); }

.timeline-eras {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  margin: 0;
  overflow-anchor: none;
  padding: 18px 0 48px;
  list-style: none;
}

.timeline-era {
  position: relative;
  overflow: hidden;
  min-height: clamp(240px, 30vh, 320px);
  padding: clamp(30px, 4.5vw, 54px);
  border: 0;
  border-left: 6px solid rgba(23, 108, 103, 0.22);
  border-radius: 3px 24px 24px 3px;
  background: var(--white);
  box-shadow: 0 16px 48px rgba(20, 49, 54, 0.075);
  opacity: 0.68;
  transform: translateY(10px);
  transition: opacity 220ms ease, transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.timeline-era::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 34%;
  height: 7px;
  background: var(--active-thread-color);
  opacity: 0.18;
}

.timeline-era.is-active {
  border-left-color: var(--active-thread-color);
  background: var(--white);
  box-shadow: 0 26px 70px rgba(20, 49, 54, 0.13);
  opacity: 1;
  transform: translateY(0);
}

.timeline-era h3 {
  margin: 8px 0 12px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 3.25vw, 3.1rem);
  font-weight: 400;
  letter-spacing: -0.035em;
}

.era-view-label {
  margin: 0 0 18px;
  color: var(--active-thread-color);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.era-copy {
  max-width: 64ch;
  color: var(--ink);
  font-size: clamp(1rem, 1.25vw, 1.09rem);
  line-height: 1.68;
  transition: opacity 140ms ease;
}

.case-anchor {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid color-mix(in srgb, var(--active-thread-color) 30%, white);
  color: var(--ink-soft);
  font-size: 0.8rem;
  font-weight: 700;
  line-height: 1.45;
}

.era-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 22px;
}

.era-tags span {
  --thread-color: var(--teal);
  padding: 6px 10px;
  border: 1px solid color-mix(in srgb, var(--thread-color) 45%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--thread-color) 7%, white);
  color: var(--thread-color);
  font-size: 0.72rem;
  font-weight: 750;
  transition: opacity 180ms ease;
}

.braided-timeline:not([data-thread="all"]) .timeline-era {
  border-left-color: color-mix(in srgb, var(--active-thread-color) 58%, white);
}

.braided-timeline:not([data-thread="all"]) .timeline-era.is-active {
  border-left-color: var(--active-thread-color);
}

.braided-timeline:not([data-thread="all"])[data-thread="learning"] [data-thread-tag]:not([data-thread-tag="learning"]),
.braided-timeline:not([data-thread="all"])[data-thread="digital"] [data-thread-tag]:not([data-thread-tag="digital"]),
.braided-timeline:not([data-thread="all"])[data-thread="work"] [data-thread-tag]:not([data-thread-tag="work"]),
.braided-timeline:not([data-thread="all"])[data-thread="technology"] [data-thread-tag]:not([data-thread-tag="technology"]) {
  opacity: 0.2;
}

.timeline-today {
  padding: clamp(38px, 5vw, 64px);
  border-radius: 3px 28px 28px 3px;
  background: var(--ink);
  color: var(--white);
}

.timeline-today .eyebrow { color: #9fd2c6; }

.timeline-today > p:last-child {
  max-width: 38ch;
  margin: 8px 0 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.45rem, 2.6vw, 2.15rem);
  line-height: 1.35;
}

.scenarios-section {
  background: #eef4f1;
}

.scenario-list {
  display: grid;
  gap: clamp(34px, 5vw, 58px);
}

.scenario-card {
  display: grid;
  grid-template-columns: minmax(270px, 0.72fr) minmax(0, 1.28fr);
  overflow: visible;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.scenario-card:nth-child(even) {
  grid-template-columns: minmax(0, 1.28fr) minmax(270px, 0.72fr);
}

.scenario-card:nth-child(even) .scenario-context { order: 2; }
.scenario-card:nth-child(even) .scenario-action { order: 1; }

.scenario-context,
.scenario-action {
  padding: clamp(30px, 4.5vw, 54px);
}

.scenario-context {
  display: grid;
  align-content: center;
  border: 0;
  border-radius: 26px 0 0 26px;
  background: var(--ink);
  color: var(--white);
}

.scenario-card:nth-child(even) .scenario-context {
  border-radius: 0 26px 26px 0;
  background: var(--teal-dark);
}

.scenario-action {
  border-radius: 0 26px 26px 0;
  background: var(--white);
  box-shadow: 0 22px 60px rgba(20, 49, 54, 0.09);
}

.scenario-card:nth-child(even) .scenario-action {
  border-radius: 26px 0 0 26px;
}

.scenario-context h3 {
  margin: 8px 0 18px;
  font-size: clamp(1.55rem, 2.5vw, 2.25rem);
}

.scenario-context > p:last-child,
.scenario-response p:last-child {
  color: var(--ink-soft);
}

.scenario-context > p:last-child { color: rgba(255, 255, 255, 0.72); }
.scenario-context .scenario-number { color: #efaa8b; }

.choice-label,
.response-label {
  margin: 0 0 14px;
  color: var(--teal-dark);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.scenario-choices {
  display: grid;
  gap: 10px;
}

.scenario-choice {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 13px;
  width: 100%;
  min-height: 54px;
  align-items: center;
  padding: 12px 15px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fbfcfa;
  color: var(--ink);
  cursor: pointer;
  text-align: left;
  transition: border-color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.scenario-choice span {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--teal);
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 700;
}

.scenario-choice:hover,
.scenario-choice:focus-visible {
  border-color: var(--teal);
  background: var(--mint-light);
  transform: translateX(3px);
}

.scenario-choice.is-selected {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--white);
}

.scenario-choice.is-selected span {
  border-color: rgba(255, 255, 255, 0.5);
  color: #f3c3a9;
}

.scenario-response {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 30px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.scenario-card.is-enhanced .scenario-response {
  display: none;
}

.scenario-card.is-enhanced.has-selection .scenario-response {
  display: grid;
  padding: 26px;
  border: 0;
  border-left: 4px solid var(--copper);
  border-radius: 0 14px 14px 0;
  background: #f5f9f6;
  animation: reveal-response 220ms ease-out both;
}

.scenario-response p {
  margin: 0;
}

.tutustu-closing {
  padding: clamp(90px, 10vw, 132px) 0;
  background: #fffdf9;
}

.tutustu-closing .closing-card {
  position: relative;
  overflow: hidden;
  border-radius: 4px 40px 40px 40px;
  background: var(--ink);
  box-shadow: 0 30px 90px rgba(20, 49, 54, 0.18);
}

.tutustu-closing .closing-card::after {
  content: "";
  position: absolute;
  right: -110px;
  bottom: -150px;
  width: 360px;
  height: 360px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 50%;
}

@keyframes reveal-response {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1000px) {
  .hero-layout,
  .section-heading {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .hero-intro {
    max-width: 66ch;
  }

  .braided-timeline {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 32px;
  }

  .search-examples > div {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .timeline-filters {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .scenario-card {
    grid-template-columns: 1fr;
  }

  .scenario-card:nth-child(even) {
    grid-template-columns: 1fr;
  }

  .scenario-card:nth-child(even) .scenario-context,
  .scenario-card:nth-child(even) .scenario-action {
    order: initial;
  }

  .scenario-context {
    border-right: 0;
    border-radius: 24px 24px 0 0;
  }

  .scenario-card:nth-child(even) .scenario-context {
    border-radius: 24px 24px 0 0;
  }

  .scenario-action,
  .scenario-card:nth-child(even) .scenario-action {
    border-radius: 0 0 24px 24px;
  }
}

@media (max-width: 720px) {
  .tutustu-header .header-inner {
    min-height: 72px;
    gap: 12px;
  }

  .tutustu-header .identity small {
    display: none;
  }

  .tutustu-header .library-link {
    max-width: 118px;
    justify-content: flex-end;
    text-align: right;
  }

  .tutustu-hero {
    padding-top: 78px;
  }

  .tutustu-hero::before {
    left: 28%;
    opacity: 0.32;
  }

  .tutustu-hero::after {
    top: 8%;
    right: -42%;
    width: 110vw;
    opacity: 0.55;
  }

  .tutustu-hero h1 {
    font-size: clamp(2.75rem, 14vw, 4.4rem);
  }

  .experience-nav {
    grid-template-columns: 1fr;
    margin-top: 50px;
  }

  .experience-nav a {
    min-height: 58px;
    padding: 12px 2px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .experience-nav a:last-child {
    border-bottom: 0;
  }

  .search-section,
  .timeline-section,
  .scenarios-section {
    padding: 78px 0;
  }

  .section-heading {
    margin-bottom: 36px;
  }

  .section-heading h2 {
    font-size: clamp(2.3rem, 12vw, 3.6rem);
  }

  .search-panel,
  .scenario-card {
    border-radius: 3px 22px 22px 22px;
  }

  .search-control {
    grid-template-columns: 1fr;
  }

  .search-control input {
    min-height: 58px;
  }

  .search-control button {
    min-height: 52px;
    border-radius: 0 0 12px 12px;
  }

  .search-examples > div {
    display: grid;
    grid-template-columns: 1fr;
  }

  .search-examples button {
    width: 100%;
    border-radius: 12px;
  }

  .search-results,
  .scenario-response {
    grid-template-columns: 1fr;
  }

  .timeline-filters {
    display: grid;
    grid-template-columns: 1fr;
    margin-bottom: 34px;
    padding: 8px;
  }

  .timeline-instruction {
    margin-top: -10px;
    margin-bottom: 18px;
  }

  .timeline-filters button {
    width: 100%;
    border-radius: 12px;
  }

  .braided-timeline {
    display: block;
  }

  .timeline-eras {
    position: relative;
    gap: 18px;
    padding: 0 0 0 22px;
  }

  .timeline-eras::before {
    content: "";
    position: absolute;
    top: 18px;
    bottom: 40px;
    left: 5px;
    width: 3px;
    border-radius: 999px;
    background: linear-gradient(#d77b58 0 24%, #77b9aa 24% 49%, #d5b268 49% 74%, #a6bec3 74%);
  }

  .braided-timeline[data-thread="learning"] .timeline-eras::before { background: var(--thread-learning); }
  .braided-timeline[data-thread="digital"] .timeline-eras::before { background: var(--thread-digital); }
  .braided-timeline[data-thread="work"] .timeline-eras::before { background: var(--thread-work); }
  .braided-timeline[data-thread="technology"] .timeline-eras::before { background: var(--thread-technology); }

  .timeline-era {
    position: relative;
    min-height: auto;
    opacity: 1;
    transform: none;
    border-left-width: 4px;
    border-radius: 2px 18px 18px 2px;
    box-shadow: 0 12px 34px rgba(20, 49, 54, 0.08);
  }

  .timeline-era::before {
    content: "";
    position: absolute;
    top: 34px;
    left: -24px;
    width: 11px;
    height: 11px;
    border: 3px solid var(--paper-light);
    border-radius: 50%;
    background: var(--active-thread-color);
  }

  .timeline-era.is-active::before {
    outline: 3px solid rgba(169, 78, 43, 0.25);
  }

  .timeline-today {
    margin-left: -22px;
    padding: 28px;
  }

  .scenario-context,
  .scenario-action {
    padding: 25px 20px;
  }

  .scenario-context,
  .scenario-card:nth-child(even) .scenario-context {
    border-radius: 18px 18px 0 0;
  }

  .scenario-action,
  .scenario-card:nth-child(even) .scenario-action {
    border-radius: 0 0 18px 18px;
  }

  .scenario-choice {
    align-items: start;
  }

  .tutustu-closing {
    padding: 64px 0;
  }
}

/* V3: selkeä toimituksellinen aikajana */
.tutustu-page {
  --thread-learning: #db4f28;
  --thread-learning-ink: #a93618;
  --thread-digital: #009487;
  --thread-digital-ink: #006f67;
  --thread-work: #c88400;
  --thread-work-ink: #7d5500;
  --thread-technology: #2e7f9c;
  --thread-technology-ink: #245f76;
  background: #fffcf7;
}

.tutustu-hero {
  min-height: auto;
  padding-top: clamp(76px, 8vw, 112px);
  background: #fffcf7;
}

.tutustu-hero::before {
  inset: auto -5rem 18% auto;
  width: clamp(230px, 30vw, 430px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--thread-learning);
  opacity: 1;
}

.tutustu-hero::after {
  top: 16%;
  right: clamp(5rem, 15vw, 15rem);
  width: clamp(120px, 16vw, 230px);
  aspect-ratio: 1;
  border: 0;
  border-radius: 0;
  background: var(--thread-digital);
  box-shadow: none;
  transform: rotate(11deg);
}

.hero-layout {
  position: relative;
  z-index: 1;
  grid-template-columns: minmax(0, 1.42fr) minmax(260px, 0.58fr);
}

.tutustu-hero h1 {
  max-width: 900px;
  font-size: clamp(3.15rem, 4.8vw, 4.95rem);
  line-height: 0.98;
}

.hero-intro {
  position: relative;
  padding: 20px 22px;
  border-left-color: var(--thread-learning);
  background: #fffcf7;
}

.search-section { background: #f2faf8; }
.timeline-section { background: #fffcf7; }
.scenarios-section { background: #fff3e9; }
.tutustu-closing { background: var(--teal-dark); }

.timeline-filters {
  gap: 6px 18px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.timeline-filters button {
  min-height: 54px;
  justify-content: flex-start;
  padding: 10px 4px;
  border: 0;
  border-bottom: 3px solid var(--line);
  border-radius: 0;
  background: transparent;
}

.timeline-filters button:hover,
.timeline-filters button:focus-visible {
  border-bottom-color: var(--teal);
  background: transparent;
}

.timeline-filters button.is-active,
.timeline-filters button[data-thread-filter][aria-pressed="true"] {
  border-color: var(--active-filter-color, var(--ink));
  border-bottom-width: 4px;
  background: transparent;
  color: var(--active-filter-ink, var(--active-filter-color, var(--ink)));
  box-shadow: none;
}

.timeline-filters button[data-thread-filter="learning"] {
  --active-filter-color: var(--thread-learning);
  --active-filter-ink: var(--thread-learning-ink);
}

.timeline-filters button[data-thread-filter="digital"] {
  --active-filter-color: var(--thread-digital);
  --active-filter-ink: var(--thread-digital-ink);
}

.timeline-filters button[data-thread-filter="work"] {
  --active-filter-color: var(--thread-work);
  --active-filter-ink: var(--thread-work-ink);
}

.timeline-filters button[data-thread-filter="technology"] {
  --active-filter-color: var(--thread-technology);
  --active-filter-ink: var(--thread-technology-ink);
}

.braided-timeline {
  --active-thread-color: var(--thread-digital);
  --active-thread-ink: var(--thread-digital-ink);
  display: block;
}

.braided-timeline[data-thread="learning"] {
  --active-thread-color: var(--thread-learning);
  --active-thread-ink: var(--thread-learning-ink);
}

.braided-timeline[data-thread="digital"] {
  --active-thread-color: var(--thread-digital);
  --active-thread-ink: var(--thread-digital-ink);
}

.braided-timeline[data-thread="work"] {
  --active-thread-color: var(--thread-work);
  --active-thread-ink: var(--thread-work-ink);
}

.braided-timeline[data-thread="technology"] {
  --active-thread-color: var(--thread-technology);
  --active-thread-ink: var(--thread-technology-ink);
}

.timeline-rail {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 18px 0 0;
}

.timeline-rail::before {
  content: "";
  position: absolute;
  top: 10px;
  right: 12.5%;
  left: 12.5%;
  height: 4px;
  background: var(--active-thread-color);
}

.timeline-rail span {
  position: relative;
  z-index: 1;
  width: 24px;
  height: 24px;
  justify-self: center;
  border: 5px solid #fffcf7;
  border-radius: 50%;
  background: var(--active-thread-color);
  box-shadow: 0 0 0 2px var(--active-thread-color);
}

.timeline-eras {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(22px, 2.5vw, 40px);
  padding: 24px 0 0;
}

.timeline-era {
  min-height: 0;
  overflow: visible;
  padding: 24px 8px 32px;
  border: 0;
  border-top: 5px solid color-mix(in srgb, var(--active-thread-color) 24%, white);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  opacity: 1;
  transform: none;
}

.timeline-era::after { display: none; }

.timeline-era.is-active {
  border-top-color: var(--active-thread-color);
  background: transparent;
  box-shadow: none;
}

.timeline-era h3 {
  min-height: 2.35em;
  font-size: clamp(1.65rem, 2.2vw, 2.45rem);
}

.era-view-label {
  color: var(--active-thread-ink);
}

.era-copy {
  max-width: none;
  font-size: 1rem;
}

.era-tags {
  align-content: flex-start;
  min-height: 76px;
}

.era-tags span {
  padding: 4px 7px;
  border-radius: 2px;
  background: transparent;
  color: var(--thread-ink, var(--thread-color));
}

.tutustu-page [data-thread-tag="learning"] { --thread-ink: var(--thread-learning-ink); }
.tutustu-page [data-thread-tag="digital"] { --thread-ink: var(--thread-digital-ink); }
.tutustu-page [data-thread-tag="work"] { --thread-ink: var(--thread-work-ink); }
.tutustu-page [data-thread-tag="technology"] { --thread-ink: var(--thread-technology-ink); }

.timeline-today {
  grid-column: 1 / -1;
  margin-top: 26px;
  padding: clamp(34px, 4vw, 54px);
  border-radius: 0;
}

.scenario-card { border-top: 5px solid var(--scenario-color, var(--thread-learning)); }
.scenario-card:nth-child(1) {
  --scenario-color: var(--thread-learning);
  --scenario-ink: var(--thread-learning-ink);
}

.scenario-card:nth-child(2) {
  --scenario-color: var(--thread-digital);
  --scenario-ink: var(--thread-digital-ink);
}

.scenario-card:nth-child(3) {
  --scenario-color: var(--thread-technology);
  --scenario-ink: var(--thread-technology-ink);
}
.scenario-context .scenario-number { color: var(--scenario-color); }
.scenario-choice.is-selected { border-color: var(--scenario-ink); background: var(--scenario-ink); }
.scenario-card.is-enhanced.has-selection .scenario-response {
  border-left-color: var(--scenario-color);
  background: color-mix(in srgb, var(--scenario-color) 7%, white);
}

@media (max-width: 1100px) and (min-width: 721px) {
  .timeline-rail { display: none; }
  .timeline-eras { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .timeline-era h3 { min-height: 0; }
  .era-tags { min-height: 0; }
}

@media (max-width: 720px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .tutustu-hero::before {
    right: -5rem;
    bottom: 12%;
    left: auto;
    width: 190px;
    opacity: 1;
  }

  .tutustu-hero::after {
    top: auto;
    right: 3rem;
    bottom: 24%;
    width: 92px;
    opacity: 1;
  }

  .tutustu-hero h1 {
    font-size: clamp(2.65rem, 12vw, 4rem);
  }

  .timeline-filters { padding: 0; }
  .timeline-filters button { border-radius: 0; }
  .timeline-rail { display: none; }

  .timeline-eras {
    grid-template-columns: 1fr;
    gap: 10px;
    padding-left: 32px;
  }

  .timeline-eras::before {
    top: 14px;
    bottom: 36px;
    left: 9px;
    width: 4px;
    background: var(--active-thread-color);
  }

  .timeline-era {
    padding: 20px 0 32px 10px;
    border-top-width: 4px;
    box-shadow: none;
  }

  .timeline-era::before {
    top: -9px;
    left: -31px;
    width: 14px;
    height: 14px;
    border: 4px solid #fffcf7;
    background: var(--active-thread-color);
    outline: 2px solid var(--active-thread-color);
  }

  .timeline-era.is-active::before { outline: 4px solid color-mix(in srgb, var(--active-thread-color) 28%, transparent); }
  .timeline-era h3, .era-tags { min-height: 0; }
  .timeline-today { margin-left: -32px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .timeline-era,
  .era-copy,
  .scenario-choice,
  .era-tags span {
    transition: none;
  }

  .scenario-choice:hover,
  .scenario-choice:focus-visible {
    transform: none;
  }

  .scenario-card.is-enhanced.has-selection .scenario-response {
    animation: none;
  }

  .timeline-era {
    opacity: 1;
    transform: none;
  }
}