:root {
    color-scheme: light;
    --bg: #f5efe6;
    --paper: #fffdf9;
    --ink: #183047;
    --muted: #5f6f7d;
    --line: #ddd3c5;
    --accent: #0f6675;
    --accent-soft: #d9ecef;
    --warm: #dd7a57;
    --green-soft: #edf9f0;
    --red-soft: #fff1ec;
  }

  * { box-sizing: border-box; }

  body {
    margin: 0;
    font-family: "Noto Sans Armenian", sans-serif;
    color: var(--ink);
    background:
      radial-gradient(circle at top right, rgba(15, 102, 117, 0.10), transparent 24%),
      radial-gradient(circle at bottom left, rgba(221, 122, 87, 0.10), transparent 26%),
      var(--bg);
  }

  a { color: inherit; }

  .topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(245, 239, 230, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(24, 48, 71, 0.10);
  }

  .topbar-inner {
    width: min(1180px, calc(100% - 24px));
    margin: 0 auto;
    padding: 12px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
  }

  .nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  .page {
    width: min(1180px, calc(100% - 24px));
    margin: 0 auto;
    padding: 24px 0 48px;
  }

  .hero, .question-card, .answer-key, .grid-card, .result-box, .panel, .resource-card, .sign-card, .plate-card, .summary-card {
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 24px;
    box-shadow: 0 12px 36px rgba(24, 48, 71, 0.06);
  }

  .hero, .panel { padding: 24px; }
  .hero { margin-bottom: 18px; }

  .eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 12px;
    color: var(--warm);
    font-weight: 800;
  }

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

  .hero-grid, .stats-grid, .result-grid, .resource-grid, .sign-grid, .plate-grid, .test-grid, .search-results {
    display: grid;
    gap: 14px;
  }

  .hero-grid { grid-template-columns: 1.4fr 1fr; }
  .stats-grid, .result-grid { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
  .resource-grid, .sign-grid { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
  .plate-grid { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
  .test-grid { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
  .search-results { grid-template-columns: 1fr; }

  .grid-card, .resource-card, .summary-card { padding: 14px; }
  .resource-card, .sign-card, .plate-card { padding: 18px; }

  .grid-card strong, .summary-card strong {
    display: block;
    font-size: 28px;
    margin-top: 6px;
  }

  .resource-card, .test-link {
    text-decoration: none;
  }

  .question-card {
    padding: 18px;
    margin-bottom: 14px;
  }

  .question-head {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: flex-start;
  }

  .question-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 10px;
  }

  .pill {
    display: inline-flex;
    align-items: center;
    padding: 6px 10px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent);
    font-size: 13px;
    font-weight: 700;
  }

  .prompt {
    font-size: 24px;
    line-height: 1.3;
    margin-bottom: 14px;
  }

  .image-wrap, .plate-wrap, .sign-image-wrap {
    padding: 12px;
    background: #f8fbfb;
    border: 1px solid #d9e6e7;
    border-radius: 18px;
    margin-bottom: 14px;
  }

  .question-image, .sign-image {
    width: 100%;
    max-height: 320px;
    object-fit: contain;
  }

  .plate-wrap svg {
    display: block;
    width: 100%;
    height: auto;
  }

  .options {
    display: grid;
    gap: 10px;
  }

  .option {
    display: grid;
    grid-template-columns: 36px 1fr;
    gap: 10px;
    align-items: center;
    padding: 12px 14px;
    border-radius: 16px;
    background: #fff;
    border: 1px solid var(--line);
    cursor: pointer;
    transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
  }

  .option:hover {
    transform: translateY(-1px);
    border-color: #bdcbc9;
  }

  .option.selected {
    border-color: #084954;
    border-width: 2px;
    background: #b8d9de;
    box-shadow: 0 14px 30px rgba(15, 102, 117, 0.24);
  }

  .option.selected .option-index {
    background: #084954;
    color: #ffffff;
  }

  .option.selected div:last-of-type {
    color: #0a3340;
    font-weight: 700;
  }

  .option.correct {
    border-color: #2c8b55;
    background: var(--green-soft);
  }

  .option.incorrect {
    border-color: #c65d3d;
    background: var(--red-soft);
  }

  .option-index {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--ink);
    color: #fff;
    font-weight: 700;
    align-self: center;
  }

  .option input {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 18px;
  }

  .button,
  .link-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 12px 16px;
    border-radius: 14px;
    text-decoration: none;
    font: inherit;
    font-weight: 700;
  }

  .button {
    border: none;
    cursor: pointer;
    background: var(--accent);
    color: #fff;
  }

  .button.secondary,
  .link-button {
    background: #fff;
    color: var(--ink);
    border: 1px solid var(--line);
  }

  .helper-text, .muted {
    color: var(--muted);
  }

  .helper-text {
    margin-top: 10px;
    font-size: 14px;
  }

  .result-box {
    display: none;
    padding: 18px;
    margin: 18px 0 22px;
  }

  .result-box.visible {
    display: block;
  }

  .answer-key[hidden] {
    display: none;
  }

  .answer-key {
    padding: 18px;
    margin-top: 24px;
  }

  .answer-table {
    width: 100%;
    border-collapse: collapse;
  }

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

  .test-link {
    display: block;
    padding: 16px;
    border-radius: 18px;
    background: var(--paper);
    border: 1px solid var(--line);
  }

  .search-box {
    width: 100%;
    min-height: 56px;
    padding: 14px 16px;
    border-radius: 16px;
    border: 1px solid var(--line);
    background: #fff;
    color: var(--ink);
    font: inherit;
    font-size: 18px;
  }

  .search-box:focus {
    outline: 2px solid rgba(15, 102, 117, 0.22);
    border-color: #0f6675;
  }

  .search-result-card {
    display: block;
    padding: 18px;
    border-radius: 20px;
    background: var(--paper);
    border: 1px solid var(--line);
    box-shadow: 0 12px 36px rgba(24, 48, 71, 0.06);
    text-decoration: none;
  }

  .search-result-card strong {
    display: block;
    font-size: 20px;
    margin: 6px 0 8px;
  }

  .search-answer {
    margin-top: 12px;
    cursor: default;
  }

  .search-answer:hover {
    transform: none;
  }

  .search-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
  }

  .search-empty {
    padding: 22px;
    border-radius: 20px;
    background: rgba(255, 253, 249, 0.72);
    border: 1px dashed #ccbda9;
    color: var(--muted);
  }

  .question-card:target {
    border-color: #0f6675;
    box-shadow: 0 0 0 4px rgba(15, 102, 117, 0.18), 0 12px 36px rgba(24, 48, 71, 0.06);
    background: #f3fbfc;
  }

  .section-stack {
    display: grid;
    gap: 18px;
  }

  .daltonism-hero {
    overflow: hidden;
    background:
      radial-gradient(circle at top right, rgba(217, 236, 239, 0.95), transparent 34%),
      radial-gradient(circle at bottom left, rgba(221, 122, 87, 0.14), transparent 32%),
      var(--paper);
  }

  .daltonism-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.95fr);
    gap: 18px;
    align-items: start;
  }

  .daltonism-side,
  .guidance-list,
  .daltonism-note-grid {
    display: grid;
    gap: 14px;
  }

  .daltonism-note-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }

  .guidance-item {
    padding: 16px 18px;
    border-radius: 18px;
    border: 1px solid #d8e3e1;
    background: #f7fbfb;
  }

  .guidance-item strong {
    display: block;
    margin-bottom: 6px;
    color: var(--ink);
  }

  .note-card {
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(248, 251, 251, 0.98)),
      var(--paper);
  }

  .note-card h3,
  .daltonism-side h3 {
    margin-bottom: 8px;
  }

  .plate-question {
    position: relative;
    overflow: hidden;
  }

  .plate-question::after {
    content: '';
    position: absolute;
    top: -48px;
    right: -32px;
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(15, 102, 117, 0.08), transparent 68%);
    pointer-events: none;
  }

  .plate-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    border-radius: 999px;
    background: #fff6f1;
    color: #9d573d;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 10px;
  }

  .plate-description {
    margin-bottom: 14px;
  }

  .plate-wrap--daltonism {
    padding: 16px;
    background: linear-gradient(180deg, #fbf6ee, #f5efe4);
    border-color: #d8d5c8;
  }

  .plate-wrap--daltonism svg {
    display: block;
    width: 100%;
    height: auto;
    filter: drop-shadow(0 18px 28px rgba(24, 48, 71, 0.12));
  }

  .sign-card h3,
  .plate-card h3 { margin-bottom: 8px; }

  .sign-code {
    display: inline-flex;
    padding: 6px 10px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent);
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 10px;
  }

  .sign-image-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 180px;
  }

  @media (max-width: 800px) {
    .topbar-inner {
      flex-direction: column;
      align-items: stretch;
    }

    .hero-grid {
      grid-template-columns: 1fr;
    }

    .daltonism-hero-grid {
      grid-template-columns: 1fr;
    }

    .prompt {
      font-size: 20px;
    }

    .question-head {
      flex-direction: column;
    }
  }