:root {
  color-scheme: dark;
  --bg: #0b0d0c;
  --surface: #141817;
  --surface-2: #1c2220;
  --surface-3: #242a28;
  --ink: #eef3ef;
  --soft: #cdd8d2;
  --muted: #91a09a;
  --line: rgba(185, 204, 195, 0.18);
  --accent: #7dd4c1;
  --blue: #8db8ff;
  --amber: #e4c065;
  --green: #8fd996;
  --red: #ef8178;
  --violet: #caa9ff;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
  --radius: 8px;
}

:root[data-contrast="high"] {
  --bg: #050505;
  --surface: #111;
  --surface-2: #1a1a1a;
  --surface-3: #232323;
  --ink: #fff;
  --soft: #f0f0f0;
  --muted: #c8c8c8;
  --line: rgba(255, 255, 255, 0.32);
  --accent: #8fffe7;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(125, 212, 193, 0.08), transparent 470px),
    var(--bg);
  color: var(--ink);
  font: 16px/1.55 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

button,
input,
select,
textarea {
  font: inherit;
}

.skip-link {
  position: fixed;
  left: 14px;
  top: -80px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--bg);
  font-weight: 800;
}

.skip-link:focus {
  top: 14px;
}

.topbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  min-height: 66px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px max(18px, calc((100vw - 1320px) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(11, 13, 12, 0.86);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  color: var(--ink);
  font-weight: 900;
  letter-spacing: 0.04em;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(125, 212, 193, 0.52);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(125, 212, 193, 0.22), rgba(202, 169, 255, 0.14));
  color: var(--accent);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  overflow-x: auto;
  scrollbar-width: thin;
}

.main-nav a,
.icon-button,
.button {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 9px 12px;
  background: rgba(255, 255, 255, 0.035);
  color: var(--soft);
  font-size: 13px;
  font-weight: 760;
  cursor: pointer;
}

.main-nav a:hover,
.main-nav a.active,
.icon-button:hover,
.button:hover {
  border-color: rgba(125, 212, 193, 0.58);
  background: rgba(125, 212, 193, 0.1);
  color: var(--ink);
  text-decoration: none;
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #07100e;
}

main {
  padding-top: 66px;
}

.hero {
  position: relative;
  min-height: calc(100svh - 66px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 430px);
  gap: 22px;
  align-items: end;
  max-width: 1320px;
  margin: 0 auto;
  padding: 46px 20px 38px;
}

.hero-media {
  position: absolute;
  inset: 0 20px;
  z-index: -1;
  overflow: hidden;
  border-radius: 0 0 var(--radius) var(--radius);
  background:
    linear-gradient(90deg, rgba(11, 13, 12, 0.98) 0%, rgba(11, 13, 12, 0.88) 32%, rgba(11, 13, 12, 0.42) 68%, rgba(11, 13, 12, 0.2)),
    url("./img/hero-radioprotection-or-v2.jpg") center right / cover no-repeat;
  border: 1px solid var(--line);
}

.hero-content {
  max-width: 790px;
  padding: 48px 0 28px;
}

.kicker {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 790px;
  margin: 0 0 18px;
  font-size: clamp(40px, 6.7vw, 86px);
  line-height: 0.96;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 720px;
  margin: 0;
  color: var(--soft);
  font-size: clamp(18px, 2vw, 23px);
}

.hero-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.hero-panel,
.search-console,
.path-card,
.case-stage,
.case-card,
.procedure-panel,
.procedure-chip,
.dose-lab,
.schema-stage,
.evidence-map,
.source-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(20, 24, 23, 0.88);
  box-shadow: var(--shadow);
}

.hero-panel {
  padding: 18px;
  margin-bottom: 28px;
  backdrop-filter: blur(16px);
}

.panel-label {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.metric {
  min-width: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
}

.metric b {
  display: block;
  color: var(--ink);
  font-size: 24px;
  font-variant-numeric: tabular-nums;
}

.metric span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.safety-note {
  margin: 16px 0 0;
  border-left: 4px solid var(--amber);
  padding: 10px 12px;
  border-radius: var(--radius);
  background: rgba(228, 192, 101, 0.1);
  color: #ead9a5;
  font-size: 13px;
}

.section {
  max-width: 1320px;
  margin: 0 auto;
  padding: 56px 20px;
}

.section-heading {
  max-width: 850px;
  margin-bottom: 22px;
}

.section-heading.inline {
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(280px, 0.75fr);
  gap: 24px;
  align-items: end;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.03;
}

.section-heading p:not(.kicker) {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.search-console {
  padding: 16px;
  margin-bottom: 18px;
}

.search-console label {
  display: block;
  margin-bottom: 8px;
  color: var(--soft);
  font-weight: 850;
}

.search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
}

input[type="search"],
textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #090b0b;
  color: var(--ink);
  padding: 12px;
}

textarea {
  min-height: 126px;
  resize: vertical;
}

input[type="search"]:focus,
textarea:focus,
input[type="range"]:focus,
select:focus {
  outline: 2px solid rgba(125, 212, 193, 0.35);
  border-color: var(--accent);
}

.result-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 10px;
  margin-top: 12px;
}

.result-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  background: rgba(255, 255, 255, 0.035);
}

.result-card b {
  display: block;
}

.result-card span {
  color: var(--muted);
  font-size: 12px;
}

.path-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.path-card {
  display: flex;
  min-height: 230px;
  flex-direction: column;
  padding: 18px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.path-card:hover {
  transform: translateY(-3px);
  border-color: rgba(125, 212, 193, 0.5);
}

.path-step {
  color: var(--accent);
  font-weight: 900;
  font-size: 12px;
}

.path-card h3 {
  margin: 16px 0 8px;
  font-size: 20px;
}

.path-card p {
  margin: 0 0 16px;
  color: var(--muted);
}

.path-card a {
  margin-top: auto;
  font-weight: 850;
}

.practice-layout,
.action-layout,
.lab-grid,
.evidence-grid {
  display: grid;
  gap: 18px;
}

.practice-layout > *,
.action-layout > *,
.lab-grid > *,
.evidence-grid > *,
.stage-hero > *,
.workbench > *,
.procedure-sections > *,
.compare-grid > *,
.network-grid > * {
  min-width: 0;
}

.practice-layout {
  grid-template-columns: minmax(250px, 320px) minmax(0, 1fr);
}

.case-rail {
  display: grid;
  gap: 10px;
  align-content: start;
}

.case-card {
  overflow: hidden;
  padding: 0;
  cursor: pointer;
  text-align: left;
  color: var(--ink);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.case-card:hover,
.case-card.active {
  border-color: rgba(125, 212, 193, 0.6);
  transform: translateY(-2px);
}

.case-card img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 8;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.case-card div {
  padding: 12px;
}

.case-card b {
  display: block;
  font-size: 14px;
}

.case-card span {
  color: var(--muted);
  font-size: 12px;
}

.case-stage,
.procedure-panel,
.schema-stage,
.evidence-map,
.source-panel,
.dose-lab {
  padding: 18px;
}

.stage-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 330px);
  gap: 18px;
  align-items: stretch;
}

.stage-hero img {
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.stage-hero h3 {
  margin: 0 0 10px;
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.05;
}

.muted {
  color: var(--muted);
}

.tag-row,
.mini-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--soft);
  background: rgba(255, 255, 255, 0.04);
  font-size: 12px;
}

.tag.amber {
  border-color: rgba(228, 192, 101, 0.42);
  color: #e8cd81;
}

.tag.green {
  border-color: rgba(143, 217, 150, 0.42);
  color: #a9e7ad;
}

.tag.violet {
  border-color: rgba(202, 169, 255, 0.42);
  color: #d4bdff;
}

.workbench {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.55fr);
  gap: 16px;
  margin-top: 18px;
}

.step-list,
.trace-coach,
.dialogue-box,
.blindspots {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  background: rgba(255, 255, 255, 0.035);
}

.step-list ol,
.procedure-panel ol,
.procedure-panel ul,
.schema-stage ul {
  margin: 10px 0 0;
  padding-left: 20px;
}

.step-list li,
.procedure-panel li,
.schema-stage li {
  margin: 7px 0;
}

.dialogue-options {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.choice {
  width: 100%;
  min-height: 42px;
  text-align: left;
  justify-content: flex-start;
}

.feedback-box {
  margin-top: 10px;
  border-left: 4px solid var(--blue);
  border-radius: var(--radius);
  padding: 10px 12px;
  background: rgba(141, 184, 255, 0.09);
  color: var(--soft);
}

.score-grid {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.score-line {
  display: grid;
  grid-template-columns: 100px minmax(0, 1fr) 34px;
  gap: 8px;
  align-items: center;
  color: var(--muted);
  font-size: 12px;
}

.score-line i,
.meter-bar {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.score-line i b,
.meter-bar i {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--red), var(--amber), var(--green));
}

.action-layout {
  grid-template-columns: minmax(260px, 360px) minmax(0, 1fr);
}

.procedure-list {
  display: grid;
  gap: 8px;
  align-content: start;
}

.procedure-chip {
  padding: 12px;
  color: var(--ink);
  cursor: pointer;
  text-align: left;
}

.procedure-chip.active {
  border-color: rgba(125, 212, 193, 0.62);
  background: rgba(125, 212, 193, 0.1);
}

.procedure-chip b {
  display: block;
}

.procedure-chip span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.procedure-sections {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.mini-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  background: rgba(255, 255, 255, 0.035);
}

.mini-panel h4 {
  margin: 0 0 8px;
}

.lab-grid {
  grid-template-columns: minmax(280px, 420px) minmax(0, 1fr);
}

.sliders {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

.sliders label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.dose-meter {
  margin-top: 18px;
}

.dose-meter span {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  font-weight: 850;
}

.dose-meter b {
  display: block;
  margin: 6px 0;
  font-size: 42px;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.schema-tabs {
  width: 100%;
  max-width: 100%;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  overflow-y: hidden;
  padding-top: 12px;
  scrollbar-width: thin;
  contain: layout paint;
}

.schema-tabs button {
  flex: 0 0 auto;
  max-width: min(300px, 82vw);
  white-space: normal;
  text-align: left;
}

.schema-voyage {
  display: grid;
  gap: 10px;
}

.schema-step {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  background: rgba(255, 255, 255, 0.035);
}

.schema-step b:first-child {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius);
  background: rgba(125, 212, 193, 0.16);
  color: var(--accent);
}

.matrix-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
}

.matrix-table th,
.matrix-table td {
  border: 1px solid var(--line);
  padding: 10px;
  text-align: left;
  vertical-align: top;
}

.matrix-table th {
  color: var(--accent);
  background: rgba(125, 212, 193, 0.08);
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.network-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 10px;
}

.network-node {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  background: rgba(255, 255, 255, 0.035);
}

.evidence-grid {
  grid-template-columns: minmax(0, 1fr) minmax(290px, 430px);
}

.facet-bars {
  display: grid;
  gap: 10px;
}

.facet-row {
  display: grid;
  grid-template-columns: minmax(120px, 0.42fr) minmax(0, 1fr) 72px;
  gap: 10px;
  align-items: center;
  color: var(--muted);
  font-size: 13px;
}

.facet-row b {
  color: var(--soft);
}

.facet-row i {
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.facet-row i span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--violet));
}

.loading-card,
.empty-state {
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 20px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.03);
}

.footer {
  max-width: 1320px;
  margin: 20px auto 0;
  padding: 24px 20px 44px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

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

  *,
  *::before,
  *::after {
    transition: none !important;
  }
}

@media (max-width: 1040px) {
  .hero,
  .section-heading.inline,
  .practice-layout,
  .action-layout,
  .lab-grid,
  .evidence-grid,
  .stage-hero,
  .workbench {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero {
    min-height: auto;
    padding-top: 54px;
  }

  .hero-panel {
    margin-bottom: 0;
  }

  .path-grid,
  .procedure-sections {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 720px) {
  html {
    scroll-padding-top: 118px;
  }

  .topbar {
    min-height: 106px;
    align-items: flex-start;
    flex-wrap: wrap;
    padding: 8px 12px;
  }

  .brand {
    height: 40px;
  }

  .main-nav {
    order: 3;
    flex-basis: 100%;
    width: 100%;
  }

  main {
    padding-top: 106px;
  }

  .hero {
    padding: 28px 14px 24px;
  }

  .hero-media {
    inset: 0 14px;
    background:
      linear-gradient(180deg, rgba(11, 13, 12, 0.95), rgba(11, 13, 12, 0.7)),
      url("./img/hero-radioprotection-or-v2.jpg") center / cover no-repeat;
  }

  h1 {
    font-size: clamp(36px, 12vw, 56px);
  }

  .section {
    padding: 42px 14px;
  }

  .path-grid,
  .metric-grid,
  .case-rail,
  .procedure-sections,
  .compare-grid,
  .search-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .path-card {
    min-height: auto;
  }

  .facet-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-actions .button,
  .button-row .button,
  .search-row .button {
    width: 100%;
  }
}

@media print {
  .topbar,
  .hero-actions,
  .button-row,
  .schema-tabs,
  .case-rail,
  .procedure-list,
  .search-console {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  main {
    padding-top: 0;
  }

  .hero-media {
    display: none;
  }

  .hero,
  .section,
  .stage-hero,
  .workbench,
  .procedure-sections,
  .lab-grid,
  .evidence-grid {
    display: block;
  }

  .hero-panel,
  .search-console,
  .path-card,
  .case-stage,
  .procedure-panel,
  .dose-lab,
  .schema-stage,
  .evidence-map,
  .source-panel,
  .mini-panel,
  .step-list,
  .trace-coach,
  .dialogue-box,
  .blindspots {
    box-shadow: none;
    border-color: #999;
    background: #fff;
    color: #000;
  }
}