:root {
  --bg-deep: #F7F1EA;
  --bg-mid: rgba(247, 241, 234, 0.9);
  --panel: rgba(247, 241, 234, 0.72);
  --panel-strong: rgba(247, 241, 234, 0.88);
  --panel-bright: rgba(103, 6, 38, 0.04);
  --border: rgba(103, 6, 38, 0.14);
  --border-strong: rgba(103, 6, 38, 0.5);
  --text: #670626;
  --muted: rgba(103, 6, 38, 0.82);
  --soft: #670626;
  --primary: #670626;
  --primary-strong: #670626;
  --error: #670626;
  --shadow: rgba(103, 6, 38, 0.1);
  --radius-xl: 26px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, "Segoe UI", Roboto, sans-serif;
  background: var(--bg-deep);
  color: var(--text);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: none;
  pointer-events: none;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
  color: inherit;
}

.shell {
  width: min(100%, 1600px);
  margin: 0 auto;
  padding: 14px 20px 24px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 24px;
  min-height: 76px;
  margin-bottom: 8px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: rgba(247, 241, 234, 0.84);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 12px 30px rgba(103, 6, 38, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-copy {
  display: grid;
  gap: 2px;
}

.brand-copy > span:first-child {
  font-size: 1.08rem;
  line-height: 1.25;
}

.brand-affiliation {
  max-width: 430px;
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(103, 6, 38, 0.12), rgba(247, 241, 234, 0.64));
  border: 1px solid rgba(103, 6, 38, 0.24);
  box-shadow: inset 0 1px 0 rgba(247, 241, 234, 0.18);
}

.header-tag {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0.9;
}

.content {
  width: min(100%, 1520px);
  margin: 0 auto;
}

.step-card {
  padding: 22px 24px 18px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(247, 241, 234, 0.98), rgba(247, 241, 234, 0.94));
  box-shadow: 0 14px 36px rgba(103, 6, 38, 0.08);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.step-card[hidden] {
  display: none;
}

#domain-selection {
  width: min(100%, 1120px);
  margin-inline: auto;
}

.step-copy {
  margin-bottom: 20px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--primary);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 700;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 10px;
  font-size: clamp(2.3rem, 3vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.05em;
}

h2 {
  margin-bottom: 8px;
  font-size: clamp(2rem, 2.4vw, 2.5rem);
  line-height: 1.12;
  letter-spacing: -0.04em;
}

.supporting {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.6;
}

.action-row {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

.primary-button,
.secondary-button,
.pdf-link {
  border: 1px solid transparent;
  border-radius: 14px;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease, opacity 0.2s ease;
}

.primary-button {
  min-width: 170px;
  min-height: 52px;
  padding: 0.82rem 1.2rem;
  border-color: rgba(103, 6, 38, 0.45);
  background: #670626;
  color: #F7F1EA;
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: 0 14px 22px rgba(103, 6, 38, 0.16);
}

.primary-button:hover,
.secondary-button:hover,
.domain-card:hover,
.pdf-link:hover {
  transform: translateY(-1px);
}

.secondary-button {
  min-height: 48px;
  padding: 0.72rem 1rem;
  background: var(--bg-deep);
  color: var(--text);
  border-color: var(--border);
}

.back-row {
  justify-content: flex-start;
  margin-top: 26px;
}

.domain-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.domain-card {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 14px;
  padding: 18px 18px 16px;
  text-align: left;
  border-radius: 24px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(247, 241, 234, 0.98), rgba(247, 241, 234, 0.92));
  box-shadow: inset 0 1px 0 rgba(247, 241, 234, 0.72), 0 8px 20px rgba(103, 6, 38, 0.07);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.domain-card:focus,
.domain-card:hover {
  border-color: rgba(103, 6, 38, 0.52);
  box-shadow: inset 0 1px 0 rgba(247, 241, 234, 0.6), 0 14px 28px rgba(103, 6, 38, 0.14);
}

.card-visual {
  display: none;
}

.domain-copy {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.domain-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.domain-code {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.domain-arrow {
  font-size: 1.4rem;
  color: var(--primary);
}

.domain-card h3 {
  margin: 0;
  font-size: 1.2rem;
  line-height: 1.4;
  letter-spacing: -0.03em;
}

.domain-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.step-headline-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.compact-copy {
  flex: 1;
  margin-bottom: 0;
}

.compact-back {
  flex-shrink: 0;
}

.selected-domain-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(247, 241, 234, 0.94);
  color: var(--text);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 18px 0 20px;
}

.beginner-note {
  margin: 0 0 24px;
  padding: 16px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: #FFFFFF;
  color: #3B252D;
  box-shadow: 0 8px 20px rgba(103, 6, 38, 0.06);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.beginner-note p {
  max-width: 80ch;
  margin: 0 0 8px;
  line-height: 1.55;
  font-weight: 600;
}

.beginner-note a {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  color: var(--primary);
  font-weight: 700;
  text-underline-offset: 3px;
  transition: color 0.18s ease, opacity 0.18s ease;
}

.beginner-note a:hover,
.developer-credit a:hover {
  opacity: 0.82;
}

.beginner-note a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

.comparison-intro {
  margin: 0 0 18px;
  max-width: 760px;
  color: var(--muted);
  line-height: 1.6;
}

.roadmap-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.roadmap-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(247, 241, 234, 0.98), rgba(247, 241, 234, 0.88));
  box-shadow: 0 8px 20px rgba(103, 6, 38, 0.07);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.prerequisite-card {
  margin-bottom: 24px;
}

.roadmap-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.roadmap-icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  box-shadow: inset 0 1px 0 rgba(247, 241, 234, 0.1);
  font-size: 1.3rem;
}

.roadmap-domain-tag {
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.roadmap-card h3 {
  margin: 0;
  font-size: 1.2rem;
  line-height: 1.35;
  letter-spacing: -0.03em;
}

.roadmap-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
  font-size: 0.94rem;
}

.career-comparison-section {
  display: grid;
  gap: 20px;
  margin-bottom: 26px;
}

.comparison-section-heading,
.roadmap-section-heading {
  margin: 0;
  color: var(--text);
}

.comparison-dataset {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.comparison-dataset h4 {
  margin: 0;
  color: var(--text);
  font-size: 1rem;
}

.comparison-secondary {
  display: block;
  color: var(--muted);
  font-size: 0.9em;
}

.career-notes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 12px;
}

.career-note {
  display: grid;
  align-content: start;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--panel-strong);
}

.career-note h4,
.career-note p {
  margin: 0;
}

.career-note h4 {
  color: var(--text);
  font-size: 0.94rem;
}

.career-note p {
  color: var(--muted);
  line-height: 1.5;
  font-size: 0.86rem;
}

.career-note .comparison-caveat {
  padding-left: 8px;
  border-left: 2px solid var(--border-strong);
}

.comparison-table-wrap {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(247, 241, 234, 0.96);
  -webkit-overflow-scrolling: touch;
}

.comparison-table {
  width: 100%;
  min-width: 360px;
  border-collapse: collapse;
  color: var(--text);
  font-size: 0.84rem;
  line-height: 1.45;
}

.comparison-table--matrix {
  min-width: 700px;
}

.comparison-table caption {
  padding: 10px 12px;
  color: var(--text);
  font-weight: 700;
  text-align: left;
}

.comparison-table th,
.comparison-table td {
  padding: 9px 12px;
  border-top: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.comparison-table thead th {
  background: var(--bg-deep);
  font-weight: 700;
}

.comparison-table tbody th {
  width: 62%;
  font-weight: 600;
}

.comparison-table .is-current {
  background: var(--bg-deep);
  font-weight: 700;
}

.criterion-code {
  display: inline-grid;
  place-items: center;
  min-width: 1.5em;
  height: 1.5em;
  margin-right: 4px;
  border-radius: 5px;
  background: var(--bg-mid);
  font-size: 0.76rem;
}

.criterion-direction {
  display: block;
  color: var(--muted);
  font-size: 0.73rem;
  font-weight: 400;
}

.comparison-caveat,
.comparison-conclusion {
  font-size: 0.86rem !important;
}

.comparison-caveat {
  padding-left: 10px;
  border-left: 2px solid var(--border-strong);
}

.developer-credit {
  width: min(100%, 960px);
  margin: 22px auto 0;
  padding: 14px 18px 6px;
  color: var(--muted);
  text-align: center;
  font-size: 0.76rem;
  line-height: 1.55;
}

.developer-credit p {
  margin: 2px 0;
}

.developer-credit .credit-title {
  color: var(--text);
  font-weight: 700;
}

.developer-credit a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.18s ease, opacity 0.18s ease;
}

.developer-credit a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

.roadmap-card-action {
  margin-top: auto;
}

.roadmap-card-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  gap: 16px;
  margin-top: auto;
}

.roadmap-card-actions .roadmap-card-action {
  display: grid;
  align-content: start;
  gap: 8px;
  min-width: 0;
  margin-top: 0;
}

.roadmap-link-note {
  max-width: 42ch;
  margin: 0;
  color: var(--muted);
  font-size: 0.74rem !important;
  line-height: 1.45 !important;
}

.pdf-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  width: fit-content;
  min-width: min(250px, 100%);
  max-width: 100%;
  padding: 0.68rem 1rem;
  text-align: center;
  line-height: 1.3;
  border: 1px solid rgba(103, 6, 38, 0.35);
  background: var(--primary);
  color: #F7F1EA;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease;
}

@media (hover: hover) {
  .roadmap-card:hover,
  .beginner-note:hover {
    transform: translateY(-2px);
    border-color: var(--border-strong);
    box-shadow: 0 12px 24px rgba(103, 6, 38, 0.1);
  }
}

.pdf-link.unavailable {
  pointer-events: none;
  opacity: 0.6;
  border-style: dashed;
  background: var(--bg-mid);
  color: var(--text);
}

@media (max-width: 768px) {
  .shell {
    padding: 8px 12px 28px;
  }

  .topbar {
    min-height: 72px;
    padding: 14px 18px;
  }

  .header-tag {
    font-size: 0.68rem;
    letter-spacing: 0.08em;
  }

  .content {
    width: min(100%, 680px);
  }

  .step-card {
    padding: 22px 16px 16px;
  }

  .brand-affiliation {
    max-width: 260px;
  }

  .brand-copy > span:first-child {
    font-size: 1.04rem;
  }

  .domain-card {
    gap: 18px;
    padding: 22px 20px 18px;
  }

  .roadmap-card {
    gap: 14px;
    min-height: 226px;
    padding: 18px 16px 16px;
  }

  .field-row,
  .domain-grid,
  .roadmap-grid {
    grid-template-columns: 1fr;
  }

  .step-headline-row {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .compact-back {
    width: auto;
  }
}

@media (min-width: 1200px) {
  .roadmap-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .comparison-table--matrix {
    min-width: 0;
    table-layout: fixed;
  }

  .comparison-table--matrix th:first-child {
    width: 40%;
  }

  .comparison-table--matrix th:not(:first-child),
  .comparison-table--matrix td {
    width: 15%;
  }

  .comparison-table--matrix th,
  .comparison-table--matrix td {
    padding: 7px 8px;
    overflow-wrap: anywhere;
  }
}

@media (max-width: 640px) {
  .roadmap-card-actions {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

@media (max-width: 460px) {
  .brand {
    font-size: 0.98rem;
  }

  .brand-affiliation {
    max-width: 210px;
    font-size: 0.68rem;
  }

  .topbar {
    min-height: 68px;
    padding: 12px 14px;
  }

  .brand-mark {
    width: 28px;
    height: 28px;
  }

  .header-tag {
    display: none;
  }

  .action-row {
    justify-content: stretch;
  }

  .primary-button {
    width: 100%;
  }

  .roadmap-card-actions .pdf-link {
    min-width: min(250px, 100%);
  }

  .secondary-button {
    width: auto;
  }

  .single-action {
    justify-content: stretch;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .domain-card:hover,
  .roadmap-card:hover,
  .beginner-note:hover,
  .primary-button:hover,
  .secondary-button:hover,
  .pdf-link:hover {
    transform: none !important;
  }
}