:root {
      color-scheme: light;
      --layout-width: 1240px;
      --ink: #101418;
      --muted: #5d6673;
      --line: #dde3ea;
      --panel: #ffffff;
      --soft: #f5f8fb;
      --blue: #1d5fd1;
      --green: #16865f;
      --red: #c64132;
      --amber: #a66800;
      --violet: #6b4bd8;
      --shadow: 0 18px 55px rgba(20, 28, 38, .12);
      --font-display: "Space Grotesk", "Segoe UI", sans-serif;
      --font-body: "Manrope", "Segoe UI", sans-serif;
    }

    * { box-sizing: border-box; }

    [hidden] { display: none !important; }

    html { scroll-behavior: smooth; }

    body {
      margin: 0;
      min-width: 320px;
      background:
        radial-gradient(circle at top left, rgba(29, 95, 209, .12), transparent 34rem),
        linear-gradient(180deg, #ffffff 0%, #f4f7fa 48%, #ffffff 100%);
      color: var(--ink);
      font-family: var(--font-body);
      line-height: 1.5;
    }

    h1, h2, h3, h4, h5, h6, .navbar-brand, .nav-link, .primary-action, .secondary-action, .icon-action {
      font-family: var(--font-display);
    }

    .checklist-navbar {
      position: sticky;
      top: 0;
      z-index: 110;
      background: rgba(8, 13, 23, 0.72) !important;
      backdrop-filter: blur(22px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      box-shadow: 0 8px 24px rgba(8, 12, 20, 0.12);
    }

    .checklist-navbar .nav-link,
    .checklist-navbar .navbar-brand {
      color: #fff !important;
    }

    .checklist-navbar .navbar-brand {
      font-family: var(--font-display);
      font-size: 0.88rem;
      letter-spacing: 0.06em;
      font-weight: 800;
      line-height: 1.15;
      white-space: nowrap;
      text-transform: uppercase;
    }

    .checklist-navbar .container-fluid {
      width: min(var(--layout-width), calc(100% - 24px));
      padding: 0.58rem 0;
    }

    .checklist-navbar .nav-link.active {
      font-weight: 600;
      border-bottom: 0 !important;
      box-shadow: inset 0 -1px 0 rgba(108, 171, 255, 0.92);
    }

    .checklist-navbar .nav-link {
      font-family: var(--font-display);
      font-size: 0.88rem;
      line-height: 1.15;
      border-radius: 12px;
      padding: 0.34rem 0.58rem !important;
      color: rgba(255, 255, 255, 0.72) !important;
      font-weight: 500;
      transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
    }

    .checklist-navbar .nav-link:hover,
    .checklist-navbar .nav-link:focus-visible,
    .checklist-navbar .nav-link.active {
      background: rgba(255, 255, 255, 0.08);
      color: #ffffff !important;
    }

    .checklist-navbar .nav-link:focus-visible {
      outline: none !important;
      box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.12), 0 0 0 4px rgba(69, 139, 255, 0.22);
    }

    .checklist-navbar .btn.btn-secondary {
      width: 44px;
      min-width: 44px;
      height: 44px;
      min-height: 44px;
      padding: 0;
      font-size: 1rem;
      line-height: 1;
      background: rgba(255, 255, 255, 0.05) !important;
      border: 1px solid rgba(255, 255, 255, 0.18) !important;
      color: #ffffff !important;
    }

    body.dark-mode .checklist-navbar,
    body.dark-mode .checklist-navbar.bg-dark {
      background: rgba(8, 13, 23, 0.72) !important;
    }

    body.dark-mode .checklist-navbar .btn.btn-secondary {
      background: rgba(255, 255, 255, 0.05) !important;
      color: #ffffff !important;
      border-color: rgba(255, 255, 255, 0.18) !important;
    }

    .checklist-navbar .navbar-collapse {
      flex-grow: 0;
    }

    .checklist-navbar-controls {
      flex: 0 0 auto;
    }

    .nav-audit-summary {
      --nav-audit-color: #567080;
      --nav-audit-angle: 0deg;
      display: flex;
      align-items: center;
      gap: 8px;
      min-width: 0;
      margin-left: auto;
      margin-right: 18px;
      padding: 6px 8px;
      border: 1px solid rgba(55, 103, 120, 0.22);
      border-radius: 8px;
      background: rgba(255, 255, 255, 0.76);
      box-shadow: 0 6px 18px rgba(44, 80, 94, 0.09);
      color: #173847;
      backdrop-filter: blur(14px);
    }

    .nav-audit-summary.is-in-progress {
      --nav-audit-color: #08688a;
    }

    .nav-audit-summary.is-attention {
      --nav-audit-color: #a64032;
      border-color: rgba(166, 64, 50, 0.3);
    }

    .nav-audit-summary.is-complete {
      --nav-audit-color: #08785e;
      border-color: rgba(8, 120, 94, 0.3);
    }

    .nav-audit-summary-label {
      padding-right: 8px;
      border-right: 1px solid rgba(55, 103, 120, 0.2);
      color: #4a6572;
      font-family: var(--font-display);
      font-size: 0.68rem;
      font-weight: 800;
      line-height: 1.1;
      letter-spacing: 0;
      text-transform: uppercase;
      white-space: nowrap;
    }

    .nav-audit-progress {
      display: flex;
      align-items: center;
      gap: 7px;
      min-width: 0;
    }

    .nav-audit-progress-ring {
      display: grid;
      flex: 0 0 auto;
      width: 36px;
      height: 36px;
      place-items: center;
      border-radius: 50%;
      background: conic-gradient(var(--nav-audit-color) var(--nav-audit-angle), #d9e7eb 0);
      position: relative;
    }

    .nav-audit-progress-ring::before {
      position: absolute;
      width: 27px;
      height: 27px;
      border-radius: 50%;
      background: #ffffff;
      content: "";
    }

    .nav-audit-progress-ring strong {
      position: relative;
      z-index: 1;
      color: #173847 !important;
      font-family: var(--font-display);
      font-size: 0.62rem;
      font-weight: 800;
      line-height: 1;
      letter-spacing: 0;
    }

    .nav-audit-progress-copy {
      display: grid;
      min-width: 92px;
      line-height: 1.12;
    }

    .nav-audit-progress-copy strong {
      color: #173847 !important;
      font-family: var(--font-display);
      font-size: 0.74rem;
      letter-spacing: 0;
      white-space: nowrap;
    }

    .nav-audit-progress-copy span {
      margin-top: 3px;
      color: #526d79;
      font-size: 0.62rem;
      font-weight: 700;
      white-space: nowrap;
    }

    .nav-audit-status {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      min-height: 30px;
      padding: 4px 7px;
      border: 1px solid transparent;
      border-radius: 7px;
      font-size: 0.68rem;
      font-weight: 800;
      line-height: 1;
      white-space: nowrap;
    }

    .nav-audit-status strong {
      color: inherit !important;
      font-size: 0.72rem;
      letter-spacing: 0;
    }

    .nav-audit-status-symbol {
      width: 8px;
      height: 8px;
      flex: 0 0 8px;
      border-radius: 50%;
      background: currentColor;
    }

    .nav-audit-status-pass {
      border-color: rgba(8, 120, 94, 0.2);
      background: #e8f5f0;
      color: #076a54;
    }

    .nav-audit-status-fail {
      border-color: rgba(166, 64, 50, 0.2);
      background: #fcecea;
      color: #97362b;
    }

    .nav-audit-status-na {
      border-color: rgba(72, 98, 111, 0.2);
      background: #eef3f5;
      color: #405d6a;
    }

    body.dark-mode .nav-audit-summary {
      border-color: rgba(177, 218, 231, 0.24);
      background: rgba(28, 59, 72, 0.9);
      color: #f3f9fb;
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    }

    body.dark-mode .nav-audit-summary-label {
      border-color: rgba(177, 218, 231, 0.2);
      color: #bdd3db;
    }

    body.dark-mode .nav-audit-progress-ring {
      background: conic-gradient(var(--nav-audit-color) var(--nav-audit-angle), #375564 0);
    }

    body.dark-mode .nav-audit-progress-ring::before {
      background: #173642;
    }

    body.dark-mode .nav-audit-progress-ring strong,
    body.dark-mode .nav-audit-progress-copy strong {
      color: #ffffff !important;
    }

    body.dark-mode .nav-audit-progress-copy span {
      color: #c3d7de;
    }

    body.dark-mode .nav-audit-status-pass {
      border-color: rgba(105, 224, 179, 0.3);
      background: #163f36;
      color: #9ce7c9;
    }

    body.dark-mode .nav-audit-status-fail {
      border-color: rgba(255, 151, 139, 0.3);
      background: #482a2a;
      color: #ffb0a7;
    }

    body.dark-mode .nav-audit-status-na {
      border-color: rgba(191, 211, 219, 0.24);
      background: #2a4450;
      color: #d1e0e5;
    }

    @media (max-width: 1199px) {
      .nav-audit-summary-label,
      .nav-audit-status-label {
        display: none;
      }

      .nav-audit-summary-label {
        padding-right: 0;
        border-right: 0;
      }

      .nav-audit-progress-copy {
        min-width: 78px;
      }
    }

    @media (max-width: 991px) {
      .nav-audit-summary {
        margin-right: 8px;
        padding: 4px;
        border: 0;
        background: transparent;
        box-shadow: none;
        backdrop-filter: none;
      }

      .nav-audit-progress-copy,
      .nav-audit-status {
        display: none;
      }

      .nav-audit-progress-ring {
        width: 40px;
        height: 40px;
      }

      .nav-audit-progress-ring::before {
        width: 30px;
        height: 30px;
      }

      .nav-audit-progress-ring strong {
        font-size: 0.68rem;
      }
    }

    @media (forced-colors: active) {
      .nav-audit-summary,
      .nav-audit-status {
        border: 1px solid CanvasText;
      }

      .nav-audit-progress-ring {
        forced-color-adjust: none;
      }
    }

    button, input, select { font: inherit; }

    button {
      cursor: pointer;
      border: 0;
    }

    a { color: var(--blue); }

    .skip-link {
      position: absolute;
      left: 1rem;
      top: .75rem;
      z-index: 20;
      transform: translateY(-150%);
      background: var(--ink);
      color: #fff;
      padding: .65rem .9rem;
      border-radius: 6px;
    }

    .skip-link:focus { transform: translateY(0); }

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

    .shell {
      width: min(var(--layout-width), calc(100% - 24px));
      margin: 0 auto;
    }

    .hero {
      position: relative;
      padding: 28px 0 14px;
      border-bottom: 1px solid rgba(16, 20, 24, .08);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(260px, .58fr);
      gap: 24px;
      align-items: center;
    }

    .hero-media-image {
      width: min(100%, 430px);
      margin-left: auto;
      display: block;
    }


    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: .45rem;
      min-height: 32px;
      margin: 0 0 16px;
      padding: .3rem .6rem;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: rgba(255, 255, 255, .72);
      color: #344052;
      font-size: .88rem;
      font-weight: 700;
    }

    h1 {
      max-width: 1120px;
      margin: 0;
      font-size: clamp(1.75rem, 3.2vw, 3rem);
      line-height: 1.02;
      letter-spacing: 0;
    }

    .lead {
      max-width: 710px;
      margin: 14px 0 0;
      color: #334155;
      font-size: clamp(1rem, 2vw, 1.18rem);
    }

    .hero-tip {
      display: grid;
      grid-template-columns: auto minmax(0, 1fr);
      gap: 12px;
      max-width: 760px;
      margin-top: 12px;
      padding: 11px 14px;
      border: 1px solid rgba(29, 95, 209, .18);
      border-left: 4px solid var(--blue);
      border-radius: 8px;
      background:
        linear-gradient(135deg, rgba(29, 95, 209, .08), transparent 46%),
        #fff;
      box-shadow: 0 12px 30px rgba(10, 22, 38, .08);
    }

    .hero-tip-icon {
      display: grid;
      place-items: center;
      width: 38px;
      height: 38px;
      border-radius: 8px;
      background: #eaf2ff;
      font-size: 1.25rem;
    }

    .hero-tip-kicker,
    .hero-tip-text {
      margin: 0;
    }

    .hero-tip-kicker {
      color: #1f5aa8;
      font-size: .72rem;
      font-weight: 900;
      letter-spacing: .08em;
      text-transform: uppercase;
    }

    .hero-tip-text {
      margin-top: 5px;
      color: #3f4d63;
      font-size: .95rem;
      line-height: 1.45;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 16px;
    }

    .primary-action,
    .secondary-action,
    .icon-action {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      border-radius: 6px;
      padding: .68rem .9rem;
      font-weight: 800;
      border: 1px solid transparent;
      text-decoration: none;
    }

    .primary-action {
      color: #fff;
      background: var(--ink);
      box-shadow: 0 10px 25px rgba(16, 20, 24, .16);
    }

    .secondary-action,
    .icon-action {
      color: var(--ink);
      background: #fff;
      border-color: var(--line);
    }

    .links-dialog,
    .export-dialog {
      width: min(92vw, 460px);
      padding: 16px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #fff;
      box-shadow: var(--shadow);
    }

    .links-dialog::backdrop,
    .export-dialog::backdrop {
      background: rgba(16, 20, 24, .48);
    }

    .links-dialog h2,
    .export-dialog h2 {
      margin: 0 0 12px;
      font-size: 1.1rem;
    }

    .links-dialog a {
      display: block;
      border: 1px solid var(--line);
      border-radius: 6px;
      padding: .68rem .72rem;
      color: var(--ink);
      text-decoration: none;
      font-weight: 850;
    }

    .links-dialog a + a {
      margin-top: 8px;
    }

    .links-dialog a:hover,
    .links-dialog a:focus-visible {
      background: var(--soft);
    }

    .links-dialog span {
      display: block;
      margin-top: 2px;
      color: var(--muted);
      font-size: .8rem;
      font-weight: 650;
    }

    .links-dialog .dialog-close {
      margin: 14px 0 0;
    }

    .export-options {
      display: grid;
      gap: 8px;
    }

    .export-option {
      display: grid;
      gap: 3px;
      width: 100%;
      min-height: 76px;
      border: 1px solid var(--line);
      border-radius: 6px;
      background: #fff;
      color: var(--ink);
      padding: .75rem;
      text-align: left;
    }

    .export-option:hover,
    .export-option:focus-visible {
      background: var(--soft);
    }

    .export-option strong {
      font-size: 1rem;
    }

    .export-option span {
      color: var(--muted);
      font-size: .86rem;
      line-height: 1.35;
    }

    .export-dialog .dialog-close {
      margin: 14px 0 0;
    }

    .audit-context-dialog {
      width: min(94vw, 860px);
      max-height: min(88vh, 900px);
      overflow: auto;
      margin: auto;
      padding: 22px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background:
        linear-gradient(135deg, rgba(29, 95, 209, .08), transparent 34%),
        #fff;
      box-shadow: var(--shadow);
    }

    .audit-context-dialog::backdrop {
      background: rgba(16, 20, 24, .52);
    }

    .fail-details-dialog {
      width: min(94vw, 560px);
      max-height: min(88vh, 780px);
      overflow: auto;
      margin: auto;
      padding: 22px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #fff;
      box-shadow: var(--shadow);
    }

    .fail-details-dialog::backdrop {
      background: rgba(16, 20, 24, .52);
    }

    .fail-details-meta {
      margin: 6px 0 0;
      color: var(--muted);
      font-size: .9rem;
      font-weight: 750;
    }

    .fail-details-grid {
      display: grid;
      gap: 12px;
    }

    .fail-details-grid label {
      display: grid;
      gap: 6px;
    }

    .fail-details-grid span {
      color: #344052;
      font-size: .82rem;
      font-weight: 900;
    }

    .fail-details-grid textarea,
    .fail-details-grid input,
    .fail-details-grid select {
      width: 100%;
      border: 1px solid var(--line);
      border-radius: 6px;
      background: #fff;
      color: var(--ink);
      padding: .65rem .7rem;
      font: inherit;
      font-size: .9rem;
    }

    .fail-details-grid textarea {
      resize: vertical;
    }

    .audit-context-lead {
      margin: 0 0 14px;
      border-left: 4px solid var(--blue);
      border-radius: 6px;
      background: #eef5ff;
      padding: 12px 14px;
      color: #344052;
      font-size: .95rem;
    }

    .audit-context-note {
      display: grid;
      gap: 3px;
      margin: -2px 0 14px;
      border: 1px solid #c9d9ea;
      border-radius: 6px;
      background: #f8fbff;
      padding: 10px 12px;
      color: #344052;
      font-size: .88rem;
      line-height: 1.42;
    }

    .audit-context-note strong {
      color: var(--ink);
    }

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

    .audit-context-grid label {
      display: grid;
      gap: 6px;
      min-width: 0;
    }

    .audit-context-grid span {
      color: #344052;
      font-size: .82rem;
      font-weight: 900;
    }

    .audit-context-grid textarea,
    .audit-context-grid input {
      width: 100%;
      border: 1px solid var(--line);
      border-radius: 6px;
      background: #fff;
      color: var(--ink);
      padding: .65rem .7rem;
      font: inherit;
      font-size: .9rem;
    }

    .audit-context-grid textarea {
      resize: vertical;
    }

    .audit-context-wide,
    .audit-context-actions {
      grid-column: 1 / -1;
    }

    .audit-context-actions {
      display: flex;
      justify-content: flex-end;
      gap: 8px;
      margin-top: 16px;
    }

    .hero-media {
      position: relative;
      overflow: hidden;
      border-radius: 8px;
      border: 1px solid var(--line);
      background: #fff;
      box-shadow: var(--shadow);
      aspect-ratio: 4 / 5;
      max-width: 330px;
      justify-self: center;
    }

    .hero-media img {
      width: 100%;
      height: 100%;
      display: block;
      object-fit: cover;
      object-position: top center;
      filter: contrast(1.02);
    }

    .hero-media::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 48%, rgba(255,255,255,.92));
      pointer-events: none;
    }

    .about-wcag {
      width: min(94vw, 980px);
      max-height: min(88vh, 860px);
      overflow: auto;
      margin: auto;
      padding: 24px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background:
        linear-gradient(135deg, rgba(29, 95, 209, .09), transparent 36%),
        #fff;
      box-shadow: 0 18px 44px rgba(10, 22, 38, .08);
    }

    .about-wcag::backdrop {
      background: rgba(16, 20, 24, .52);
    }

    .basics-dialog {
      width: min(94vw, 1040px);
      max-height: min(88vh, 900px);
      overflow: auto;
      margin: auto;
      padding: 24px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background:
        linear-gradient(135deg, rgba(22, 134, 95, .1), transparent 34%),
        #fff;
      box-shadow: var(--shadow);
    }

    .basics-dialog::backdrop {
      background: rgba(16, 20, 24, .52);
    }

    .basics-dialog h2 {
      margin: 0;
      color: var(--ink);
      font-size: clamp(1.7rem, 3vw, 2.5rem);
      line-height: 1.05;
    }

    .basics-dialog .about-dialog-head {
      margin-bottom: 12px;
    }

    .basics-lead {
      margin: 0 0 16px;
      border-left: 4px solid var(--green);
      border-radius: 6px;
      background: #eef9f4;
      padding: 12px 14px;
      color: #344052;
      font-size: .98rem;
      line-height: 1.55;
    }

    .basics-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 12px;
    }

    .basics-card {
      min-width: 0;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #f8fafc;
      padding: 14px;
    }

    .basics-card-with-media {
      display: grid;
      grid-template-columns: minmax(300px, .72fr) minmax(0, 1fr);
      gap: 14px;
      align-items: start;
    }

    .basics-card-media {
      margin: 0;
      overflow: hidden;
      border: 1px solid rgba(29, 95, 209, .16);
      border-radius: 8px;
      background: #fff;
      align-self: start;
      max-height: 360px;
    }

    .basics-media-button {
      position: relative;
      display: block;
      width: 100%;
      height: min(360px, 42vw);
      min-height: 0;
      padding: 0;
      overflow: hidden;
      background: #fff;
    }

    .basics-media-button::after {
      content: "Zoom";
      position: absolute;
      right: 8px;
      bottom: 8px;
      border-radius: 999px;
      padding: .24rem .48rem;
      background: rgba(16, 20, 24, .82);
      color: #fff;
      font-size: .7rem;
      font-weight: 850;
      opacity: 0;
      transform: translateY(4px);
      transition: opacity .18s ease, transform .18s ease;
    }

    .basics-media-button:hover::after,
    .basics-media-button:focus-visible::after {
      opacity: 1;
      transform: translateY(0);
    }

    .basics-card-media img {
      display: block;
      width: 100%;
      height: 100%;
      object-fit: contain;
      object-position: top center;
    }

    .basics-card-wide {
      grid-column: 1 / -1;
      background:
        linear-gradient(135deg, rgba(29, 95, 209, .08), transparent 40%),
        #f8fafc;
    }

    .basics-card-head {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 10px;
    }

    .basics-card-head > span {
      display: grid;
      place-items: center;
      width: 38px;
      height: 38px;
      flex: 0 0 auto;
      border-radius: 8px;
      background: #fff;
      border: 1px solid rgba(29, 95, 209, .16);
      font-size: 1.25rem;
    }

    .basics-card h3 {
      margin: 0;
      color: var(--ink);
      font-size: 1rem;
      line-height: 1.2;
    }

    .basics-card p {
      margin: 0 0 10px;
      color: #46546a;
      font-size: .92rem;
      line-height: 1.5;
    }

    .basics-note {
      margin: 12px 0 0 !important;
      border-left: 4px solid var(--blue);
      border-radius: 0 6px 6px 0;
      background: #eef5ff;
      padding: 10px 12px;
      color: #344052 !important;
      font-weight: 750;
    }

    .practice-check {
      margin-top: 12px;
      border: 1px solid rgba(29, 95, 209, .16);
      border-radius: 8px;
      background: #fff;
      padding: 10px;
    }

    .practice-check > strong {
      display: block;
      margin-bottom: 7px;
      color: var(--ink);
      font-size: .86rem;
    }

    .practice-check ul {
      gap: 6px;
      font-size: .86rem;
    }

    .basics-card ul {
      display: grid;
      gap: 8px;
      margin: 0;
      padding-left: 1.15rem;
      color: #3d4b5f;
      font-size: .92rem;
      line-height: 1.45;
    }

    .automation-note {
      margin-bottom: 10px !important;
      font-weight: 750;
    }

    .tool-list {
      padding-left: 0 !important;
      list-style: none;
    }

    .tool-list li {
      border: 1px solid rgba(29, 95, 209, .16);
      border-radius: 6px;
      background: #fff;
      padding: 10px;
    }

    .video-link {
      display: inline-flex;
      align-items: center;
      min-height: 30px;
      margin-top: 6px;
      border: 1px solid rgba(29, 95, 209, .28);
      border-radius: 6px;
      background: #fff;
      color: var(--blue);
      padding: .32rem .5rem;
      font-size: .78rem;
      font-weight: 900;
    }

    .video-link:hover,
    .video-link:focus-visible {
      background: #eaf2ff;
    }

    .about-dialog-head {
      display: flex;
      align-items: start;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 18px;
    }

    .about-grid {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(280px, .72fr);
      gap: 22px;
      align-items: start;
    }

    .section-kicker {
      margin: 0 0 7px;
      color: var(--blue);
      font-size: .78rem;
      font-weight: 950;
      letter-spacing: .08em;
      text-transform: uppercase;
    }

    .about-wcag h2 {
      margin: 0;
      color: var(--ink);
      font-size: clamp(1.7rem, 3vw, 2.5rem);
      line-height: 1.05;
    }

    .about-lead {
      max-width: 760px;
      margin: 14px 0 0;
      color: #334155;
      font-size: 1.05rem;
    }

    .about-note {
      margin-top: 14px;
      border-left: 4px solid var(--blue);
      border-radius: 6px;
      background: #f3f7fc;
      padding: 12px 14px;
      color: #3a475a;
      font-size: .95rem;
    }

    .pour-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 10px;
      margin-top: 18px;
    }

    .pour-card {
      min-width: 0;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #fff;
      padding: 12px;
    }

    .pour-card strong {
      display: block;
      margin-bottom: 4px;
      color: var(--ink);
      font-size: .98rem;
    }

    .pour-card span {
      display: block;
      color: #526174;
      font-size: .9rem;
      line-height: 1.45;
    }

    .benefit-panel {
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #f8fafc;
      padding: 16px;
    }

    .benefit-panel h3 {
      margin: 0 0 8px;
      color: var(--ink);
      font-size: 1.1rem;
    }

    .benefit-panel p {
      margin: 0;
      color: #46546a;
      font-size: .95rem;
    }

    .access-spectrum {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      margin: 16px 0;
    }

    .spectrum-item {
      min-width: 0;
      border: 1px solid rgba(29, 95, 209, .2);
      border-radius: 8px;
      background: #fff;
      padding: 14px 10px;
      text-align: center;
      box-shadow: 0 10px 22px rgba(10, 22, 38, .06);
    }

    .spectrum-symbol {
      display: grid;
      place-items: center;
      width: 54px;
      height: 54px;
      margin: 0 auto 10px;
      border: 1px solid rgba(29, 95, 209, .18);
      border-radius: 50%;
      background: #eaf2ff;
      font-size: 1.75rem;
      line-height: 1;
    }

    .spectrum-item strong {
      display: block;
      color: var(--ink);
      font-size: 1rem;
      line-height: 1.15;
    }

    .spectrum-item span:not(.spectrum-symbol) {
      display: block;
      margin-top: 5px;
      color: #5a6678;
      font-size: .78rem;
      line-height: 1.25;
    }

    .benefit-list {
      display: grid;
      gap: 8px;
      margin: 14px 0 0;
      padding: 0;
      list-style: none;
      color: #3d4b5f;
      font-size: .93rem;
    }

    .benefit-list li {
      position: relative;
      padding-left: 20px;
    }

    .benefit-list li::before {
      content: "✓";
      position: absolute;
      left: 0;
      color: var(--green);
      font-weight: 950;
    }

    .stats {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
      width: calc(100vw - 48px);
      margin-left: calc(50% - 50vw + 24px);
      padding: 14px 0 22px;
    }

    @media (min-width: 961px) {
      .hero {
        display: block;
      }

      .hero-grid {
        align-items: center;
      }

      .hero-media {
        width: min(100%, 360px);
        max-height: 520px;
      }
    }

    .metric {
      position: relative;
      min-height: 132px;
      overflow: hidden;
      isolation: isolate;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      border: 1px solid rgba(29, 95, 209, .12);
      border-radius: 18px;
      padding: 22px 24px;
      background:
        linear-gradient(135deg, rgba(255, 255, 255, .96), rgba(247, 250, 255, .88)),
        var(--panel);
      box-shadow: 0 16px 44px rgba(16, 24, 40, .08);
    }

    .metric::before {
      content: "#";
      position: absolute;
      top: 18px;
      right: 18px;
      z-index: -1;
      display: grid;
      place-items: center;
      width: 52px;
      height: 52px;
      border-radius: 16px;
      background: rgba(29, 95, 209, .1);
      color: var(--blue);
      font-family: var(--font-display);
      font-size: .98rem;
      font-weight: 850;
    }

    .metric::after {
      content: "";
      position: absolute;
      inset: auto 0 0;
      height: 5px;
      background: linear-gradient(90deg, var(--blue), rgba(29, 95, 209, .25));
    }

    .metric:nth-child(2) {
      border-color: rgba(22, 134, 95, .16);
    }

    .metric:nth-child(2)::before {
      content: "OK";
      background: rgba(22, 134, 95, .12);
      color: var(--green);
    }

    .metric:nth-child(2)::after {
      background: linear-gradient(90deg, var(--green), rgba(22, 134, 95, .22));
    }

    .metric:nth-child(3) {
      border-color: rgba(198, 65, 50, .16);
    }

    .metric:nth-child(3)::before {
      content: "!";
      background: rgba(198, 65, 50, .1);
      color: var(--red);
    }

    .metric:nth-child(3)::after {
      background: linear-gradient(90deg, var(--red), rgba(198, 65, 50, .2));
    }

    .metric strong {
      display: block;
      color: var(--ink);
      font-family: var(--font-display);
      font-size: clamp(2.3rem, 4.5vw, 4.2rem);
      font-weight: 850;
      line-height: 1;
    }

    .metric span {
      display: block;
      margin-top: 8px;
      color: var(--muted);
      font-size: clamp(.92rem, 1.4vw, 1.08rem);
      font-weight: 800;
      letter-spacing: 0;
    }

    .workspace {
      display: grid;
      grid-template-columns: 290px minmax(0, 1fr);
      gap: 18px;
      align-items: start;
      padding-bottom: 48px;
    }

    .side {
      position: sticky;
      top: 14px;
      display: grid;
      gap: 14px;
    }

    .panel {
      background: var(--panel);
      border: 1px solid var(--line);
      border-radius: 8px;
      box-shadow: 0 10px 30px rgba(20, 28, 38, .06);
    }

    .progress-panel { padding: 12px; }

    .donut-wrap {
      display: grid;
      grid-template-columns: 88px 1fr;
      gap: 12px;
      align-items: center;
    }

    .donut {
      width: 88px;
      aspect-ratio: 1;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: conic-gradient(var(--green) var(--angle, 0deg), #e7edf3 0);
    }

    .donut::before {
      content: "";
      position: absolute;
    }

    .donut-inner {
      display: grid;
      place-items: center;
      width: 62px;
      aspect-ratio: 1;
      border-radius: 50%;
      background: #fff;
      font-size: 1.25rem;
      font-weight: 900;
    }

    .progress-copy h2,
    .filters h2 {
      margin: 0 0 6px;
      font-size: 1rem;
    }

    .progress-copy p {
      margin: 0;
      color: var(--muted);
      font-size: .82rem;
      line-height: 1.35;
    }

    .mini-bars {
      display: grid;
      gap: 6px;
      margin-top: 10px;
    }

    .mini-bar {
      display: grid;
      grid-template-columns: 58px 1fr 24px;
      gap: 8px;
      align-items: center;
      color: var(--muted);
      font-size: .78rem;
      font-weight: 800;
    }

    .track {
      height: 8px;
      overflow: hidden;
      border-radius: 999px;
      background: #e8edf3;
    }

    .fill {
      width: var(--value, 0%);
      height: 100%;
      border-radius: inherit;
      background: var(--green);
    }

    .fill.fail { background: var(--red); }
    .fill.na { background: var(--amber); }

    .filters { padding: 12px; }

    .field { margin-top: 9px; }

    .field label {
      display: block;
      margin-bottom: 4px;
      color: #344052;
      font-size: .78rem;
      font-weight: 850;
    }

    select {
      width: 100%;
      min-height: 36px;
      border: 1px solid var(--line);
      border-radius: 6px;
      background: #fff;
      color: var(--ink);
      padding: .5rem .62rem;
    }

    .segmented {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 4px;
      padding: 4px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--soft);
    }

    #levelFilter {
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 3px;
    }

    .segmented button {
      min-width: 0;
      min-height: 32px;
      border-radius: 6px;
      color: #455364;
      background: transparent;
      font-weight: 850;
      white-space: nowrap;
    }

    .segmented button[aria-pressed="true"] {
      color: #fff;
      background: var(--ink);
    }

    .utility {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 8px;
      margin-top: 10px;
    }

    .icon-action {
      min-width: 0;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 7px;
      min-height: 34px;
      padding: .42rem .54rem;
      font-size: .8rem;
    }

    select:focus-visible,
    .fail-details-grid textarea:focus-visible,
    .fail-details-grid input:focus-visible,
    .fail-details-grid select:focus-visible,
    .audit-context-grid textarea:focus-visible,
    .audit-context-grid input:focus-visible,
    .note:focus-visible {
      outline: 0;
      border-color: var(--blue);
      box-shadow: 0 0 0 3px rgba(29, 95, 209, .18);
    }

    .content {
      min-width: 0;
      display: grid;
      gap: 14px;
    }

    .toolbar {
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 10px;
      align-items: center;
      padding: 12px 14px;
    }

    .toolbar strong { font-size: 1rem; }
    .toolbar span { color: var(--muted); font-size: .9rem; }

    .toolbar-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      justify-content: flex-end;
    }

    .toolbar-actions .secondary-action {
      min-height: 38px;
      padding: .55rem .72rem;
      font-size: .88rem;
    }

    .principle-group {
      display: grid;
      gap: 10px;
    }

    .principle-heading {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 16px 18px 6px;
    }

    .principle-intro {
      max-width: 900px;
      margin: 2px 18px 10px;
      padding: 14px 16px;
      border: 1px solid #d7e2ef;
      border-left: 4px solid var(--blue);
      border-radius: 8px;
      background: #f8fbff;
      color: #344256;
      font-size: .92rem;
      line-height: 1.48;
    }

    .principle-intro p {
      margin: 0;
    }

    .principle-intro p + p {
      margin-top: 8px;
    }

    .principle-title {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.05rem;
      font-weight: 950;
      text-transform: uppercase;
      letter-spacing: .06em;
    }

    .principle-icon {
      display: grid;
      place-items: center;
      width: 42px;
      height: 42px;
      border-radius: 8px;
      background: #111820;
      color: #fff;
    }

    .principle-icon svg {
      width: 27px;
      height: 27px;
      display: block;
      stroke: currentColor;
      stroke-width: 2.2;
      stroke-linecap: round;
      stroke-linejoin: round;
      fill: none;
    }

    .criterion {
      position: relative;
      display: grid;
      grid-template-columns: minmax(0, 1fr) 150px;
      gap: 18px;
      padding: 16px;
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: rgba(255, 255, 255, .92);
      box-shadow: 0 10px 28px rgba(20, 28, 38, .06);
    }

    .criterion::before {
      content: "";
      position: absolute;
      inset: 0 auto 0 0;
      width: 5px;
      background: #c9d4e1;
    }

    .criterion[data-status="pass"]::before { background: var(--green); }
    .criterion[data-status="fail"]::before { background: var(--red); }
    .criterion[data-status="na"]::before { background: var(--amber); }

    .criterion-main {
      min-width: 0;
      padding-left: 6px;
    }

    .criterion-head {
      display: grid;
      grid-template-columns: auto minmax(0, 1fr);
      gap: 18px;
      align-items: start;
    }

    .criterion-head.no-preview {
      grid-template-columns: 1fr;
    }

    .meta {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px;
      margin-bottom: 8px;
    }

    .sc {
      font-variant-numeric: tabular-nums;
      font-weight: 950;
      color: #111820;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      min-height: 24px;
      border-radius: 999px;
      padding: 0 .55rem;
      font-size: .76rem;
      font-weight: 950;
      background: #eaf1fb;
      color: #174ea6;
    }

    .badge.aa {
      background: #f2edff;
      color: #5a35c9;
    }

    .badge.aaa {
      background: #fff3df;
      color: #945100;
    }

    .badge.new {
      background: #e9f8ef;
      color: #086b38;
      border: 1px solid rgba(8, 107, 56, .16);
      letter-spacing: .04em;
    }

    .wcag-official-link {
      display: inline-flex;
      align-items: center;
      min-height: 24px;
      border: 1px solid rgba(29, 95, 209, .22);
      border-radius: 999px;
      padding: 0 .58rem;
      background: rgba(255, 255, 255, .72);
      color: #174ea6;
      font-size: .76rem;
      font-weight: 900;
      text-decoration: none;
    }

    .wcag-official-link::after {
      content: "↗";
      margin-left: 5px;
      font-size: .72rem;
      line-height: 1;
    }

    .wcag-official-link:hover,
    .wcag-official-link:focus-visible {
      background: #eaf1fb;
      text-decoration: underline;
      text-underline-offset: 2px;
    }

    .criterion h3 {
      margin: 0;
      font-size: 1.12rem;
      line-height: 1.25;
    }

    .description {
      margin: 9px 0 0;
      color: #354255;
    }

    .test {
      margin: 12px 0 0;
      padding: 12px;
      border-left: 3px solid #9fb3ca;
      border-radius: 0 6px 6px 0;
      background: #f5f8fb;
      color: #2f3b4b;
      font-size: .93rem;
    }

    .preview-panel,
    .implementation {
      margin-top: 12px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #fff;
    }

    .preview-panel {
      width: clamp(240px, 28vw, 320px);
      margin: 0;
      padding: 8px;
    }

    .preview-image {
      position: relative;
      display: block;
      width: 100%;
      padding: 0;
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: 6px;
      background: #fff;
      aspect-ratio: 1 / 1;
    }

    .preview-image::after {
      content: "Zoom";
      position: absolute;
      right: 7px;
      bottom: 7px;
      border-radius: 999px;
      padding: .22rem .44rem;
      background: rgba(16, 20, 24, .82);
      color: #fff;
      font-size: .68rem;
      font-weight: 850;
      opacity: 0;
      transform: translateY(4px);
      transition: opacity .18s ease, transform .18s ease;
    }

    .preview-image:hover::after,
    .preview-image:focus-visible::after {
      opacity: 1;
      transform: translateY(0);
    }

    .preview-image img {
      width: 100%;
      height: 100%;
      display: block;
      object-fit: contain;
      transform: scale(1.05);
    }

    body.minimal-mode .preview-panel {
      display: none;
    }

    body.minimal-mode .criterion {
      box-shadow: none;
    }

    .image-dialog {
      width: min(92vw, 860px);
      max-height: 90vh;
      padding: 14px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #fff;
      box-shadow: var(--shadow);
    }

    .image-dialog::backdrop {
      background: rgba(16, 20, 24, .62);
    }

    .image-dialog img {
      width: 100%;
      max-height: 76vh;
      display: block;
      object-fit: contain;
      border-radius: 6px;
      background: var(--soft);
    }

    .dialog-close {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 38px;
      margin-bottom: 10px;
      border: 1px solid var(--line);
      border-radius: 6px;
      background: #fff;
      color: var(--ink);
      padding: .45rem .7rem;
      font-weight: 850;
    }

    .implementation-title,
    .implementation summary {
      color: #344052;
      font-size: .8rem;
      font-weight: 950;
      text-transform: uppercase;
      letter-spacing: .06em;
    }

    .implementation {
      overflow: hidden;
    }

    .implementation summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      min-height: 48px;
      padding: 12px;
      cursor: pointer;
      list-style: none;
      border-radius: 6px;
    }

    .implementation summary:focus-visible {
      outline: 3px solid #111820;
      outline-offset: -3px;
      box-shadow: 0 0 0 5px rgba(17, 24, 32, .12);
    }

    .implementation summary::-webkit-details-marker {
      display: none;
    }

    .implementation summary::after {
      content: "+";
      display: grid;
      place-items: center;
      width: 26px;
      height: 26px;
      flex: 0 0 auto;
      border-radius: 50%;
      background: var(--soft);
      color: var(--ink);
      font-size: 1rem;
      font-weight: 950;
    }

    .implementation[open] summary::after {
      content: "–";
    }

    .implementation-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 10px;
      padding: 0 12px 12px;
    }

    .implementation-overview {
      margin: 0;
      padding: 0 12px 12px 32px;
      color: #354255;
      font-size: .9rem;
      overflow-wrap: anywhere;
    }

    .implementation-overview li + li {
      margin-top: 5px;
    }

    .implementation-card {
      min-width: 0;
      border: 1px solid var(--line);
      border-radius: 6px;
      background: #f8fafc;
      padding: 10px;
      overflow: hidden;
    }

    .implementation-card h4 {
      display: flex;
      align-items: center;
      gap: 9px;
      margin: 0 0 10px;
      font-size: .92rem;
    }

    .platform-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 26px;
      height: 26px;
      flex: 0 0 auto;
      color: #172033;
      font-size: 1.22rem;
      line-height: 1;
    }

    .platform-icon svg {
      width: 24px;
      height: 24px;
      display: block;
    }

    .platform-icon.android {
      color: #3ddc84;
    }

    .platform-icon.ios {
      color: #172033;
      font-size: 1.38rem;
    }

    .implementation-card ul {
      margin: 0;
      padding-left: 1.05rem;
      color: #354255;
      font-size: .88rem;
      overflow-wrap: anywhere;
      word-break: normal;
    }

    .implementation-card li {
      min-width: 0;
    }

    .implementation-card li + li {
      margin-top: 5px;
    }

    .status-box {
      display: grid;
      align-content: start;
      gap: 8px;
      min-width: 0;
      padding-top: 2px;
    }

    .status-label {
      color: var(--muted);
      font-size: .76rem;
      font-weight: 950;
      text-transform: uppercase;
      letter-spacing: .08em;
    }

    .status-buttons {
      display: grid;
      grid-template-columns: 1fr;
      gap: 6px;
      padding: 5px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--soft);
    }

    .status-buttons button {
      position: relative;
      min-width: 0;
      min-height: 42px;
      border-radius: 6px;
      color: #334155;
      background: #fff;
      font-weight: 950;
    }

    .status-buttons button span {
      display: inline-block;
      margin-right: 6px;
      font-size: 1rem;
      line-height: 1;
    }

    .status-buttons button small {
      display: inline-block;
      margin-top: 0;
      font-size: .72rem;
      line-height: 1;
    }

    .status-buttons button[aria-pressed="true"] {
      color: #fff;
      transform: translateY(-1px);
      box-shadow: 0 8px 16px rgba(20, 28, 38, .13);
    }

    .status-buttons [data-status-option="pass"][aria-pressed="true"] { background: var(--green); }
    .status-buttons [data-status-option="fail"][aria-pressed="true"] { background: var(--red); }
    .status-buttons [data-status-option="na"][aria-pressed="true"] { background: var(--amber); }

    .audit-field {
      display: grid;
      gap: 4px;
      min-width: 0;
    }

    .audit-field span {
      color: var(--muted);
      font-size: .72rem;
      font-weight: 900;
      letter-spacing: .04em;
      text-transform: uppercase;
    }

    .note {
      width: 100%;
      border: 1px solid var(--line);
      border-radius: 6px;
      padding: .58rem .65rem;
      color: #253044;
      background: #fff;
      font: inherit;
      font-size: .88rem;
    }

    .note {
      min-height: 74px;
      resize: vertical;
    }

    .issue-details-button {
      min-height: 36px;
      border: 1px solid var(--line);
      border-radius: 6px;
      background: #fff;
      color: var(--ink);
      padding: .45rem .55rem;
      font-size: .82rem;
      font-weight: 850;
    }

    .issue-details-button:hover,
    .issue-details-button:focus-visible {
      background: var(--soft);
    }

    .empty {
      display: none;
      padding: 34px;
      text-align: center;
      color: var(--muted);
    }

    .empty[aria-hidden="false"] { display: block; }

    .site-footer {
      margin: 10px 0 34px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background:
        linear-gradient(135deg, rgba(255, 204, 0, .14), transparent 32%),
        linear-gradient(180deg, #fff, #f8fafc);
      box-shadow: 0 18px 44px rgba(10, 22, 38, .08);
      padding: 18px;
    }

    .footer-inner {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(280px, .45fr);
      align-items: stretch;
      gap: 16px;
    }

    .footer-feedback {
      display: grid;
      grid-template-columns: auto minmax(0, 1fr);
      align-items: center;
      gap: 18px;
    }

    .author-photo {
      width: 76px;
      height: 76px;
      border: 3px solid #fff;
      border-radius: 50%;
      box-shadow: 0 0 0 1px var(--line), 0 10px 24px rgba(10, 22, 38, .14);
      object-fit: cover;
      object-position: center 35%;
      background: #fff;
    }

    .footer-copy {
      min-width: 0;
    }

    .footer-kicker {
      margin: 0 0 5px;
      color: var(--blue);
      font-size: .78rem;
      font-weight: 950;
      letter-spacing: .08em;
      text-transform: uppercase;
    }

    .footer-copy h2 {
      margin: 0 0 6px;
      color: var(--ink);
      font-size: clamp(1.1rem, 2vw, 1.45rem);
      line-height: 1.15;
    }

    .footer-copy p {
      max-width: 820px;
      margin: 0;
      color: #46546a;
      font-size: .98rem;
      line-height: 1.55;
    }

    .author-contact-card {
      position: relative;
      overflow: hidden;
      display: grid;
      align-content: center;
      gap: 10px;
      min-height: 100%;
      border: 1px solid rgba(29, 95, 209, .18);
      border-radius: 8px;
      background:
        linear-gradient(135deg, rgba(29, 95, 209, .1), transparent 46%),
        #fff;
      padding: 16px;
    }

    .contact-kicker {
      margin: 0;
      color: var(--blue);
      font-size: .76rem;
      font-weight: 950;
      letter-spacing: .08em;
      text-transform: uppercase;
    }

    .author-contact-card h2 {
      margin: 0;
      color: var(--ink);
      font-size: 1.25rem;
      line-height: 1.1;
    }

    .author-contact-links {
      display: grid;
      gap: 4px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .author-contact-links a {
      display: flex;
      align-items: center;
      width: fit-content;
      max-width: 100%;
      min-height: 44px;
      padding: 6px 0;
      color: var(--blue);
      font-weight: 800;
      line-height: 1.4;
      text-decoration: underline;
      text-underline-offset: 3px;
      overflow-wrap: anywhere;
    }

    .author-contact-links a:hover {
      text-decoration-thickness: 2px;
    }

    .author-contact-links a:focus-visible {
      outline: 3px solid var(--blue);
      outline-offset: 3px;
      border-radius: 3px;
    }

    .author-contact-card p {
      margin: 0;
      color: #46546a;
      font-size: .92rem;
      line-height: 1.45;
    }

    .footer-credit {
      margin-top: 14px;
      padding-top: 14px;
      border-top: 1px solid rgba(15, 23, 42, .1);
      color: var(--muted);
      font-size: .88rem;
      font-weight: 750;
    }

    body.dark-mode {
      color-scheme: dark;
      --ink: #eef4ff;
      --muted: #aeb8c8;
      --line: #344154;
      --panel: #151c27;
      --soft: #101722;
      --blue: #78a8ff;
      --green: #60d39d;
      --red: #ff8a7f;
      --amber: #ffc66b;
      --violet: #b9a7ff;
      --shadow: 0 18px 55px rgba(0, 0, 0, .34);
      background:
        radial-gradient(circle at top left, rgba(120, 168, 255, .14), transparent 34rem),
        linear-gradient(180deg, #0a0f18 0%, #111824 52%, #0a0f18 100%);
    }

    body.dark-mode .checklist-navbar .btn.btn-secondary,
    body.dark-mode .eyebrow,
    body.dark-mode .hero-tip,
    body.dark-mode .metric,
    body.dark-mode .secondary-action,
    body.dark-mode .icon-action,
    body.dark-mode select,
    body.dark-mode .criterion,
    body.dark-mode .preview-panel,
    body.dark-mode .preview-image,
    body.dark-mode .implementation,
    body.dark-mode .status-buttons button,
    body.dark-mode .note,
    body.dark-mode .issue-details-button,
    body.dark-mode .dialog-close,
    body.dark-mode .links-dialog,
    body.dark-mode .export-dialog,
    body.dark-mode .export-option,
    body.dark-mode .video-link,
    body.dark-mode .audit-context-dialog,
    body.dark-mode .fail-details-dialog,
    body.dark-mode .audit-context-grid textarea,
    body.dark-mode .audit-context-grid input,
    body.dark-mode .fail-details-grid textarea,
    body.dark-mode .fail-details-grid input,
    body.dark-mode .fail-details-grid select,
    body.dark-mode .about-wcag,
    body.dark-mode .basics-dialog,
    body.dark-mode .site-footer {
      background: var(--panel);
      color: var(--ink);
    }

    body.dark-mode .hero,
    body.dark-mode .hero-media,
    body.dark-mode .panel,
    body.dark-mode .metric,
    body.dark-mode .criterion,
    body.dark-mode .preview-panel,
    body.dark-mode .implementation,
    body.dark-mode .implementation-card,
    body.dark-mode .basics-card,
    body.dark-mode .basics-card-media,
    body.dark-mode .tool-list li,
    body.dark-mode .status-buttons,
    body.dark-mode .note,
    body.dark-mode select,
    body.dark-mode .issue-details-button,
    body.dark-mode .links-dialog,
    body.dark-mode .links-dialog a,
    body.dark-mode .export-dialog,
    body.dark-mode .export-option,
    body.dark-mode .video-link,
    body.dark-mode .audit-context-dialog,
    body.dark-mode .fail-details-dialog,
    body.dark-mode .audit-context-grid textarea,
    body.dark-mode .audit-context-grid input,
    body.dark-mode .fail-details-grid textarea,
    body.dark-mode .fail-details-grid input,
    body.dark-mode .fail-details-grid select,
    body.dark-mode .about-wcag,
    body.dark-mode .basics-dialog,
    body.dark-mode .site-footer {
      border-color: var(--line);
    }

    body.dark-mode .lead,
    body.dark-mode .description,
    body.dark-mode .test,
    body.dark-mode .principle-intro,
    body.dark-mode .implementation-overview,
    body.dark-mode .implementation-card ul,
    body.dark-mode .basics-lead,
    body.dark-mode .basics-card p,
    body.dark-mode .basics-card ul,
    body.dark-mode .footer-copy p,
    body.dark-mode .author-contact-card p,
    body.dark-mode .footer-credit,
    body.dark-mode .toolbar span,
    body.dark-mode .progress-copy p,
    body.dark-mode .field label,
    body.dark-mode .export-option span,
    body.dark-mode .audit-context-lead,
    body.dark-mode .audit-context-grid span,
    body.dark-mode .fail-details-meta,
    body.dark-mode .fail-details-grid span,
    body.dark-mode .audit-field span,
    body.dark-mode .status-label {
      color: var(--muted);
    }

    body.dark-mode .hero-media,
    body.dark-mode .donut-inner,
    body.dark-mode .implementation-card,
    body.dark-mode .basics-card,
    body.dark-mode .basics-card-media,
    body.dark-mode .tool-list li,
    body.dark-mode .principle-intro,
    body.dark-mode .test,
    body.dark-mode .status-buttons,
    body.dark-mode .segmented,
    body.dark-mode .track,
    body.dark-mode .author-contact-card {
      background: #101722;
    }

    body.dark-mode .hero-media::after {
      background: linear-gradient(180deg, transparent 48%, rgba(10, 15, 24, .9));
    }

    body.dark-mode .metric {
      background:
        linear-gradient(135deg, rgba(22, 29, 42, .98), rgba(13, 19, 31, .92)),
        var(--panel);
      border-color: rgba(120, 168, 255, .18) !important;
      box-shadow: 0 18px 46px rgba(0, 0, 0, .28);
    }

    body.dark-mode .metric::before {
      background: rgba(120, 168, 255, .14);
    }

    body.dark-mode .metric:nth-child(2) {
      border-color: rgba(96, 211, 157, .18) !important;
    }

    body.dark-mode .metric:nth-child(2)::before {
      background: rgba(96, 211, 157, .14);
    }

    body.dark-mode .metric:nth-child(3) {
      border-color: rgba(255, 138, 127, .18) !important;
    }

    body.dark-mode .metric:nth-child(3)::before {
      background: rgba(255, 138, 127, .13);
    }

    body.dark-mode .sc,
    body.dark-mode .criterion h3,
    body.dark-mode .basics-card h3,
    body.dark-mode .about-wcag h2,
    body.dark-mode .implementation-title,
    body.dark-mode .implementation summary,
    body.dark-mode .implementation summary::after,
    body.dark-mode .status-buttons button,
    body.dark-mode .note,
    body.dark-mode .issue-details-button,
    body.dark-mode .footer-copy h2,
    body.dark-mode .author-contact-card h2 {
      color: var(--ink);
    }

    body.dark-mode .badge {
      background: rgba(120, 168, 255, .18);
      color: #c8dcff;
    }

    body.dark-mode .badge.aa {
      background: rgba(185, 167, 255, .18);
      color: #d8ceff;
    }

    body.dark-mode .badge.aaa {
      background: rgba(251, 191, 36, .16);
      color: #ffd98a;
    }

    body.dark-mode .badge.new {
      background: rgba(52, 211, 153, .16);
      color: #8ef0c4;
      border-color: rgba(142, 240, 196, .24);
    }

    body.dark-mode .wcag-official-link {
      background: rgba(120, 168, 255, .12);
      border-color: rgba(156, 194, 255, .24);
      color: #c8dcff;
    }

    body.dark-mode .wcag-official-link:hover,
    body.dark-mode .wcag-official-link:focus-visible {
      background: rgba(120, 168, 255, .2);
    }

    body.dark-mode .primary-action,
    body.dark-mode .segmented button[aria-pressed="true"] {
      background: #eef4ff;
      color: #101722;
    }

    body.dark-mode .status-buttons button[aria-pressed="true"] {
      color: #08101a;
    }

    body.dark-mode .principle-icon {
      background: #eef4ff;
      color: #101722;
    }

    body.dark-mode .hero-tip,
    body.dark-mode .basics-lead,
    body.dark-mode .audit-context-lead,
    body.dark-mode .principle-intro,
    body.dark-mode .test {
      border-left-color: var(--blue);
    }

    body.dark-mode .hero-tip {
      background: #111d2c;
      border-color: #4f79ba;
      border-left-color: #9cc2ff;
    }

    body.dark-mode .audit-context-lead {
      background: #111d2c;
      color: #f4f8ff;
    }

    body.dark-mode .audit-context-note {
      border-color: var(--line);
      background: #101722;
      color: var(--muted);
    }

    body.dark-mode .audit-context-note strong {
      color: var(--ink);
    }

    body.dark-mode .basics-note {
      background: #111d2c;
      color: #f4f8ff !important;
      border-left-color: #9cc2ff;
    }

    body.dark-mode .practice-check {
      background: #101722;
      border-color: var(--line);
    }

    body.dark-mode .practice-check > strong {
      color: var(--ink);
    }

    body.dark-mode .hero-tip-icon {
      background: #203451;
      color: #eef4ff;
    }

    body.dark-mode .hero-tip-kicker {
      color: #b8d4ff;
    }

    body.dark-mode .hero-tip-text {
      color: #f4f8ff;
    }

    body.dark-mode .preview-image img {
      filter: none;
    }

    body.dark-mode .basics-card-media img,
    body.dark-mode .basics-media-button img {
      filter: invert(1) hue-rotate(180deg) contrast(1.05);
    }

    body.dark-mode .about-wcag,
    body.dark-mode .basics-dialog,
    body.dark-mode .export-dialog,
    body.dark-mode .audit-context-dialog,
    body.dark-mode .fail-details-dialog,
    body.dark-mode .site-footer {
      background: var(--panel);
    }

    .back-to-top {
      position: fixed;
      right: 18px;
      bottom: 18px;
      z-index: 15;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      min-height: 44px;
      border: 1px solid rgba(16, 20, 24, .14);
      border-radius: 999px;
      background: #101418;
      color: #fff;
      padding: .58rem .82rem;
      box-shadow: 0 16px 34px rgba(10, 22, 38, .2);
      font-size: .88rem;
      font-weight: 900;
      text-decoration: none;
      opacity: 0;
      pointer-events: none;
      transform: translateY(10px);
      transition: opacity .18s ease, transform .18s ease;
    }

    body.app-2026.page-checklist .back-to-top,
    body.app-2026.page-checklist .back-to-top:visited {
      color: #fff;
    }

    .back-to-top.is-visible {
      opacity: 1;
      pointer-events: auto;
      transform: translateY(0);
    }

    .back-to-top::before {
      content: "↑";
      display: grid;
      place-items: center;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: rgba(255, 255, 255, .16);
      font-size: .95rem;
      line-height: 1;
    }

    body.app-2026.page-checklist .back-to-top:hover,
    body.app-2026.page-checklist .back-to-top:focus-visible {
      background: #243044;
      color: #fff;
    }

    body.app-2026.page-checklist .author-contact-card h2 {
      color: var(--ink) !important;
    }

    :focus-visible {
      outline: 3px solid #111820;
      outline-offset: 3px;
    }

    body.dark-mode :focus-visible {
      outline: 3px solid #f8fbff;
      outline-offset: 3px;
      box-shadow: 0 0 0 6px rgba(120, 168, 255, .35);
    }

    body.dark-mode select:focus-visible,
    body.dark-mode .fail-details-grid textarea:focus-visible,
    body.dark-mode .fail-details-grid input:focus-visible,
    body.dark-mode .fail-details-grid select:focus-visible,
    body.dark-mode .audit-context-grid textarea:focus-visible,
    body.dark-mode .audit-context-grid input:focus-visible,
    body.dark-mode .note:focus-visible {
      outline: 3px solid #f8fbff;
      outline-offset: 2px;
      border-color: #9cc2ff;
      box-shadow: 0 0 0 6px rgba(120, 168, 255, .35);
    }

    body.dark-mode .implementation summary:focus-visible {
      outline: 3px solid #f8fbff;
      outline-offset: -3px;
      box-shadow: inset 0 0 0 2px #9cc2ff, 0 0 0 5px rgba(120, 168, 255, .32);
    }

    @media print {
      body {
        background: #fff !important;
        color: #101418 !important;
      }

      body * {
        color: #101418 !important;
        filter: none !important;
      }

      .hero-actions,
      .side,
      .toolbar-actions,
      .back-to-top,
      .nav-audit-summary,
      dialog {
        display: none !important;
      }

      .shell {
        width: 100%;
      }

      .hero {
        padding: 0 0 16px;
      }

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

      .hero-media,
      .preview-panel {
        display: none !important;
      }

      .panel,
      .criterion,
      .metric,
      .implementation,
      .implementation-card,
      .test,
      .principle-intro,
      .site-footer {
        background: #fff !important;
        box-shadow: none !important;
        break-inside: avoid;
      }
    }

    @media (max-width: 960px) {
      .hero-grid,
      .about-grid,
      .workspace {
        grid-template-columns: 1fr;
      }


      .hero-media {
        justify-self: center;
        width: min(100%, 330px);
        max-height: 390px;
      }


      .side {
        position: static;
      }

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

      .footer-inner,
      .footer-feedback {
        grid-template-columns: 1fr;
      }

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

    @media (max-width: 680px) {
      .shell {
        width: calc(100% - 20px);
      }

      .hero {
        padding-top: 24px;
      }

      .stats {
        grid-template-columns: 1fr;
        gap: 10px;
        width: auto;
        margin-left: 0;
        padding-top: 10px;
      }

      .metric {
        min-height: 112px;
        padding: 18px 20px;
      }

      .metric::before {
        width: 46px;
        height: 46px;
        border-radius: 14px;
      }

      .about-wcag {
        padding: 16px;
      }

      .pour-grid,
      .access-spectrum,
      .audit-context-grid,
      .basics-grid,
      .basics-card-with-media,
      .tool-list {
        grid-template-columns: 1fr;
      }

      .audit-context-actions {
        flex-direction: column-reverse;
      }

      .audit-context-actions > * {
        width: 100%;
      }

      .donut-wrap,
      .toolbar {
        grid-template-columns: 1fr;
      }

      .hero-actions,
      .toolbar,
      .toolbar-actions {
        align-items: stretch;
      }

      .hero-actions > *,
      .toolbar > *,
      .toolbar-actions > * {
        width: 100%;
      }

      .preview-panel {
        width: min(100%, 280px);
      }

      .basics-media-button {
        height: auto;
        min-height: 0;
      }

      .basics-card-media {
        max-height: none;
      }

      .criterion-head {
        grid-template-columns: 1fr;
      }

      .site-footer {
        padding: 14px;
      }

      .footer-inner {
        gap: 12px;
      }

      .author-photo {
        width: 58px;
        height: 58px;
      }

      .back-to-top {
        right: 12px;
        bottom: 12px;
        padding: .55rem;
      }

      .back-to-top span {
        position: absolute;
        width: 1px;
        height: 1px;
        overflow: hidden;
        clip: rect(0 0 0 0);
        white-space: nowrap;
      }
    }