@layer reset, base, components, views, utilities;

@layer reset {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body,
  h1,
  h2,
  h3,
  p,
  ol,
  ul,
  figure {
    margin: 0;
  }

  button,
  input,
  textarea {
    font: inherit;
  }

  button {
    color: inherit;
  }

  img,
  canvas {
    max-width: 100%;
  }
}

@layer base {
  :root {
    color-scheme: dark;
    --ink: #071c24;
    --ink-2: #0b2731;
    --ink-3: #113641;
    --paper: #f3f0e5;
    --paper-muted: #c6c8bd;
    --line: rgba(226, 236, 225, 0.18);
    --line-strong: rgba(226, 236, 225, 0.38);
    --lime: #c8ff5c;
    --cyan: #65dcdf;
    --violet: #c4a7ff;
    --amber: #ffca62;
    --coral: #ff806a;
    --pink: #ff9cc8;
    --blue: #78aaff;
    --danger: #ff8c76;
    --shadow: 0 28px 70px rgba(0, 8, 12, 0.28);
    --max-width: 1440px;
    --topbar-height: 76px;
    --ease: cubic-bezier(0.2, 0.72, 0.2, 1);
    --global-progress: 0%;
    --display: "Arial Narrow", "Avenir Next Condensed", "Helvetica Neue", Arial, sans-serif;
    --body: Inter, "Avenir Next", "Helvetica Neue", Arial, sans-serif;
    --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  }

  body {
    min-width: 320px;
    min-height: 100vh;
    overflow-x: hidden;
    background: var(--ink);
    color: var(--paper);
    font-family: var(--body);
    font-size: 16px;
    line-height: 1.55;
    text-rendering: optimizeLegibility;
  }

  body::before {
    position: fixed;
    inset: 0;
    z-index: -2;
    content: "";
    background:
      linear-gradient(rgba(126, 190, 177, 0.035) 1px, transparent 1px),
      linear-gradient(90deg, rgba(126, 190, 177, 0.035) 1px, transparent 1px);
    background-size: 56px 56px;
    pointer-events: none;
  }

  body::after {
    position: fixed;
    inset: auto -8vw -34vh auto;
    z-index: -1;
    width: 62vw;
    height: 62vw;
    border: 1px solid rgba(101, 220, 223, 0.07);
    border-radius: 50%;
    content: "";
    box-shadow:
      0 0 0 8vw rgba(101, 220, 223, 0.018),
      0 0 0 16vw rgba(101, 220, 223, 0.014);
    pointer-events: none;
  }

  button,
  a,
  input,
  textarea {
    -webkit-tap-highlight-color: transparent;
  }

  button,
  a {
    transition:
      color 180ms var(--ease),
      background-color 180ms var(--ease),
      border-color 180ms var(--ease),
      transform 180ms var(--ease),
      opacity 180ms var(--ease);
  }

  button:focus-visible,
  a:focus-visible,
  input:focus-visible,
  textarea:focus-visible {
    outline: 3px solid var(--lime);
    outline-offset: 4px;
  }

  button {
    border: 0;
    background: none;
    cursor: pointer;
  }

  button:disabled {
    cursor: not-allowed;
  }

  a {
    color: inherit;
  }

  ::selection {
    background: var(--lime);
    color: var(--ink);
  }

  h1,
  h2,
  h3 {
    font-family: var(--display);
    letter-spacing: -0.035em;
    line-height: 0.98;
  }

  h1 {
    font-size: clamp(3rem, 7vw, 7.8rem);
    font-weight: 760;
  }

  h2 {
    font-size: clamp(2rem, 3.8vw, 4.4rem);
    font-weight: 720;
  }

  p {
    text-wrap: pretty;
  }

  .skip-link {
    position: fixed;
    top: 10px;
    left: 10px;
    z-index: 200;
    padding: 0.7rem 1rem;
    transform: translateY(-150%);
    background: var(--lime);
    color: var(--ink);
    font-weight: 800;
  }

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

@layer components {
  .eyebrow {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    line-height: 1.35;
    text-transform: uppercase;
  }

  .status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--lime);
    box-shadow: 0 0 0 5px rgba(200, 255, 92, 0.11);
  }

  .topbar {
    position: sticky;
    top: 0;
    z-index: 80;
    display: grid;
    grid-template-columns: minmax(250px, 1fr) auto minmax(250px, 1fr);
    align-items: center;
    min-height: var(--topbar-height);
    padding: 0 2.2rem;
    border-bottom: 1px solid var(--line);
    background: rgba(7, 28, 36, 0.94);
    backdrop-filter: blur(18px);
  }

  .topbar::after {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: var(--global-progress);
    height: 2px;
    content: "";
    background: var(--lime);
    transition: width 400ms var(--ease);
  }

  .brand {
    display: grid;
    grid-template-columns: auto auto 1fr;
    align-items: center;
    justify-self: start;
    gap: 0.65rem;
    text-align: left;
  }

  .brand-mark {
    display: flex;
    align-items: flex-end;
    gap: 2px;
    width: 24px;
    height: 22px;
  }

  .brand-mark span {
    display: block;
    width: 6px;
    background: var(--lime);
  }

  .brand-mark span:nth-child(1) {
    height: 9px;
  }

  .brand-mark span:nth-child(2) {
    height: 20px;
  }

  .brand-mark span:nth-child(3) {
    height: 14px;
  }

  .brand-type {
    font-family: var(--display);
    font-size: 1.05rem;
    font-weight: 850;
    letter-spacing: 0.04em;
  }

  .brand-station {
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.57rem;
    letter-spacing: 0.13em;
    line-height: 1.1;
  }

  .main-nav {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    justify-self: center;
  }

  .main-nav button {
    padding: 0.55rem 0.8rem;
    border-bottom: 1px solid transparent;
    color: var(--paper-muted);
    font-size: 0.8rem;
    font-weight: 720;
  }

  .main-nav button:hover,
  .main-nav button.is-active {
    border-color: var(--lime);
    color: var(--paper);
  }

  .top-actions {
    display: flex;
    align-items: center;
    justify-self: end;
    gap: 0.7rem;
  }

  .progress-chip {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.48rem 0.65rem;
    border: 1px solid var(--line);
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.69rem;
  }

  .progress-chip:hover {
    border-color: var(--line-strong);
    color: var(--paper);
  }

  .progress-chip-label {
    color: var(--paper);
    font-family: var(--body);
    font-weight: 700;
  }

  .icon-button {
    display: grid;
    width: 38px;
    height: 38px;
    place-items: center;
    border: 1px solid var(--line);
    color: var(--paper);
    font-family: var(--mono);
    font-weight: 800;
  }

  .icon-button:hover {
    border-color: var(--lime);
    background: rgba(200, 255, 92, 0.08);
  }

  .primary-button,
  .secondary-button,
  .danger-button {
    display: inline-flex;
    min-height: 52px;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 0.85rem 1.15rem;
    border: 1px solid transparent;
    font-size: 0.84rem;
    font-weight: 820;
    letter-spacing: 0.01em;
  }

  .primary-button {
    background: var(--lime);
    color: var(--ink);
  }

  .primary-button:hover:not(:disabled) {
    transform: translateY(-2px);
    background: #dbff91;
    box-shadow: 0 12px 30px rgba(200, 255, 92, 0.12);
  }

  .primary-button:disabled {
    opacity: 0.38;
  }

  .secondary-button {
    border-color: var(--line-strong);
    background: rgba(243, 240, 229, 0.025);
    color: var(--paper);
  }

  .secondary-button:hover {
    border-color: var(--paper);
    background: rgba(243, 240, 229, 0.07);
  }

  .danger-button {
    background: var(--danger);
    color: var(--ink);
  }

  .text-button {
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    padding: 0.35rem 0;
    border-bottom: 1px solid var(--line-strong);
    color: var(--paper);
    font-size: 0.8rem;
    font-weight: 760;
  }

  .text-button:hover {
    border-color: var(--lime);
    color: var(--lime);
  }

  .danger-text {
    color: #ffad9d;
  }

  .section-heading {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
    align-items: end;
    gap: 3rem;
    margin-bottom: 2.6rem;
  }

  .section-heading h2 {
    max-width: 760px;
    margin-top: 0.8rem;
  }

  .section-heading > p {
    max-width: 500px;
    color: var(--paper-muted);
  }

  .view {
    display: none;
    width: min(100%, var(--max-width));
    min-height: calc(100vh - var(--topbar-height));
    margin: 0 auto;
    animation: view-enter 360ms var(--ease) both;
  }

  .view.is-active {
    display: block;
  }

  @keyframes view-enter {
    from {
      transform: translateY(8px);
      opacity: 0;
    }

    to {
      transform: translateY(0);
      opacity: 1;
    }
  }

  .color-lime {
    --accent: var(--lime);
    --accent-rgb: 200, 255, 92;
  }

  .color-cyan {
    --accent: var(--cyan);
    --accent-rgb: 101, 220, 223;
  }

  .color-violet {
    --accent: var(--violet);
    --accent-rgb: 196, 167, 255;
  }

  .color-amber {
    --accent: var(--amber);
    --accent-rgb: 255, 202, 98;
  }

  .color-coral {
    --accent: var(--coral);
    --accent-rgb: 255, 128, 106;
  }

  .color-pink {
    --accent: var(--pink);
    --accent-rgb: 255, 156, 200;
  }

  .color-blue {
    --accent: var(--blue);
    --accent-rgb: 120, 170, 255;
  }

  .page-intro {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(300px, 0.7fr);
    align-items: end;
    gap: 4rem;
    padding: 6.5rem 3rem 3.5rem;
    border-bottom: 1px solid var(--line);
  }

  .page-intro h1 {
    max-width: 900px;
    margin-top: 1rem;
    font-size: clamp(3.8rem, 7vw, 7rem);
  }

  .page-intro > p {
    max-width: 520px;
    padding-bottom: 0.65rem;
    color: var(--paper-muted);
    font-size: 1.03rem;
  }

  .settings-panel {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 130;
    width: min(440px, 92vw);
    height: 100dvh;
    padding: 2rem;
    transform: translateX(105%);
    border-left: 1px solid var(--line-strong);
    background: #0b2731;
    box-shadow: -30px 0 80px rgba(0, 5, 8, 0.4);
    transition: transform 260ms var(--ease);
  }

  .settings-panel.is-open {
    transform: translateX(0);
  }

  .settings-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding-bottom: 1.6rem;
    border-bottom: 1px solid var(--line);
  }

  .settings-head h2 {
    margin-top: 0.55rem;
    font-size: 2.2rem;
  }

  .setting-row {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 1rem;
    padding: 1.3rem 0;
    border-bottom: 1px solid var(--line);
  }

  .setting-row strong,
  .setting-row span {
    display: block;
  }

  .setting-row strong {
    margin-bottom: 0.28rem;
    font-size: 0.92rem;
  }

  .setting-row span {
    color: var(--paper-muted);
    font-size: 0.76rem;
  }

  .switch {
    position: relative;
    width: 52px;
    height: 28px;
    border: 1px solid var(--line-strong);
    border-radius: 18px;
    background: rgba(243, 240, 229, 0.06);
  }

  .switch span {
    position: absolute;
    top: 4px;
    left: 4px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--paper-muted);
    transition: transform 180ms var(--ease);
  }

  .switch[aria-checked="true"] {
    border-color: var(--lime);
    background: rgba(200, 255, 92, 0.18);
  }

  .switch[aria-checked="true"] span {
    transform: translateX(24px);
    background: var(--lime);
  }

  .settings-panel > .text-button {
    margin-top: 1.6rem;
  }

  .panel-scrim {
    position: fixed;
    inset: 0;
    z-index: 120;
    background: rgba(0, 8, 12, 0.58);
    backdrop-filter: blur(3px);
  }

  dialog {
    width: min(760px, calc(100vw - 2rem));
    max-height: min(780px, calc(100dvh - 2rem));
    padding: 0;
    overflow: hidden;
    border: 1px solid var(--line-strong);
    border-radius: 0;
    background: var(--ink-2);
    color: var(--paper);
    box-shadow: var(--shadow);
  }

  dialog::backdrop {
    background: rgba(0, 8, 12, 0.76);
    backdrop-filter: blur(5px);
  }

  .dialog-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: 1.5rem 1.6rem;
    border-bottom: 1px solid var(--line);
  }

  .dialog-head h2 {
    margin-top: 0.55rem;
    font-size: 2.3rem;
  }

  .search-label {
    display: grid;
    gap: 0.5rem;
    padding: 1.25rem 1.6rem;
    border-bottom: 1px solid var(--line);
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .search-label input {
    min-height: 48px;
    padding: 0.75rem 0.9rem;
    border: 1px solid var(--line);
    border-radius: 0;
    background: var(--ink);
    color: var(--paper);
    font-family: var(--body);
    font-size: 0.95rem;
    text-transform: none;
  }

  .glossary-list {
    max-height: 55vh;
    padding: 0 1.6rem 1.5rem;
    overflow-y: auto;
  }

  .glossary-list article {
    display: grid;
    grid-template-columns: minmax(150px, 0.35fr) 1fr;
    gap: 1.2rem;
    padding: 1.05rem 0;
    border-bottom: 1px solid var(--line);
  }

  .glossary-list h3 {
    color: var(--lime);
    font-family: var(--mono);
    font-size: 0.8rem;
    letter-spacing: 0;
  }

  .glossary-list p {
    color: var(--paper-muted);
    font-size: 0.86rem;
  }

  .empty-state {
    padding: 2rem 0;
    color: var(--paper-muted);
  }

  .confirm-dialog {
    width: min(500px, calc(100vw - 2rem));
    padding: 2rem;
  }

  .confirm-dialog h2 {
    margin: 0.7rem 0 1rem;
    font-size: 2.3rem;
  }

  .confirm-dialog > p:not(.eyebrow) {
    color: var(--paper-muted);
  }

  .dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.7rem;
    margin-top: 2rem;
  }

  .toast {
    position: fixed;
    right: 1.4rem;
    bottom: 1.4rem;
    z-index: 180;
    max-width: 380px;
    padding: 0.85rem 1rem;
    transform: translateY(24px);
    border: 1px solid var(--lime);
    background: var(--ink-2);
    color: var(--paper);
    font-size: 0.82rem;
    opacity: 0;
    pointer-events: none;
    transition:
      opacity 180ms var(--ease),
      transform 180ms var(--ease);
  }

  .toast.is-visible {
    transform: translateY(0);
    opacity: 1;
  }
}

@layer views {
  .home-view {
    padding: 0 3rem;
  }

  .hero {
    display: grid;
    grid-template-columns: minmax(0, 1.04fr) minmax(430px, 0.76fr);
    align-items: center;
    gap: clamp(2rem, 5vw, 6rem);
    min-height: min(790px, calc(100vh - var(--topbar-height)));
    padding: 5rem 0 4rem;
  }

  .hero-copy h1 {
    max-width: 900px;
    margin: 1.1rem 0 1.65rem;
    font-size: clamp(4rem, 7.7vw, 8.4rem);
    line-height: 0.82;
    text-transform: uppercase;
  }

  .hero-copy h1 span {
    display: block;
    color: var(--lime);
    font-style: italic;
    font-weight: 430;
  }

  .hero-lede {
    max-width: 670px;
    color: var(--paper-muted);
    font-size: clamp(1rem, 1.3vw, 1.17rem);
    line-height: 1.65;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 2.1rem;
  }

  .hero-note {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    margin-top: 1.25rem;
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.7rem;
  }

  .hero-note > span {
    color: var(--lime);
  }

  .hero-instrument {
    position: relative;
    min-height: 570px;
    overflow: hidden;
    border: 1px solid var(--line-strong);
    background: #0a242d;
    box-shadow: var(--shadow);
  }

  .instrument-grid {
    position: absolute;
    inset: 0;
    background:
      linear-gradient(rgba(101, 220, 223, 0.09) 1px, transparent 1px),
      linear-gradient(90deg, rgba(101, 220, 223, 0.09) 1px, transparent 1px);
    background-size: 30px 30px;
    mask-image: linear-gradient(to bottom, #000, transparent 87%);
  }

  .instrument-top {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: space-between;
    padding: 1rem 1.2rem;
    border-bottom: 1px solid var(--line);
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.62rem;
    letter-spacing: 0.12em;
  }

  .live-label {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    color: var(--lime);
  }

  .live-label i {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--lime);
    box-shadow: 0 0 12px var(--lime);
  }

  .scope {
    position: relative;
    z-index: 1;
    width: min(360px, 76%);
    aspect-ratio: 1;
    margin: 2.5rem auto 2rem;
    overflow: hidden;
    border: 1px solid rgba(101, 220, 223, 0.42);
    border-radius: 50%;
    background: rgba(3, 18, 23, 0.8);
    box-shadow:
      inset 0 0 45px rgba(101, 220, 223, 0.08),
      0 0 70px rgba(101, 220, 223, 0.08);
  }

  .scope-ring {
    position: absolute;
    inset: 50%;
    border: 1px solid rgba(101, 220, 223, 0.21);
    border-radius: 50%;
    transform: translate(-50%, -50%);
  }

  .ring-one {
    width: 32%;
    height: 32%;
  }

  .ring-two {
    width: 62%;
    height: 62%;
  }

  .ring-three {
    width: 88%;
    height: 88%;
  }

  .scope-axis {
    position: absolute;
    background: rgba(101, 220, 223, 0.17);
  }

  .scope-axis-x {
    top: 50%;
    left: 0;
    width: 100%;
    height: 1px;
  }

  .scope-axis-y {
    top: 0;
    left: 50%;
    width: 1px;
    height: 100%;
  }

  .scope-sweep {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 44%;
    height: 1px;
    transform-origin: left center;
    background: var(--lime);
    box-shadow: 0 0 16px var(--lime);
    animation: sweep 8s linear infinite;
  }

  @keyframes sweep {
    to {
      transform: rotate(1turn);
    }
  }

  .scope-point {
    position: absolute;
    width: 8px;
    height: 8px;
    border: 1px solid var(--lime);
    border-radius: 50%;
    background: var(--ink);
    box-shadow: 0 0 16px var(--lime);
    animation: point-pulse 2.4s ease-in-out infinite alternate;
  }

  .scope-point::after {
    position: absolute;
    inset: -9px;
    border: 1px solid rgba(200, 255, 92, 0.28);
    border-radius: 50%;
    content: "";
  }

  .p1 {
    top: 28%;
    left: 64%;
  }

  .p2 {
    top: 65%;
    left: 22%;
    animation-delay: -0.9s;
  }

  .p3 {
    top: 72%;
    left: 70%;
    animation-delay: -1.6s;
  }

  @keyframes point-pulse {
    to {
      transform: scale(1.35);
      opacity: 0.58;
    }
  }

  .scope-core {
    position: absolute;
    top: 50%;
    left: 50%;
    display: grid;
    width: 72px;
    height: 72px;
    place-items: center;
    transform: translate(-50%, -50%);
    border: 1px solid var(--line-strong);
    border-radius: 50%;
    background: var(--ink);
    color: var(--lime);
    font-family: var(--mono);
    font-size: 1.5rem;
  }

  .signal-readout {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .signal-readout div {
    display: grid;
    gap: 0.3rem;
    padding: 0.9rem 0.8rem;
    border-right: 1px solid var(--line);
  }

  .signal-readout div:last-child {
    border: 0;
  }

  .signal-readout span {
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.55rem;
    letter-spacing: 0.1em;
  }

  .signal-readout strong {
    color: var(--lime);
    font-family: var(--mono);
    font-size: 0.68rem;
  }

  .instrument-caption {
    position: relative;
    z-index: 2;
    padding: 1rem 1.2rem 1.2rem;
    color: var(--paper-muted);
    font-size: 0.78rem;
  }

  .home-band {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 2.4rem;
    min-height: 110px;
    margin: 0 -3rem;
    padding: 1.4rem 3rem;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .home-band > p {
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.64rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  .method-line {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem;
  }

  .method-line span {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    font-size: 0.78rem;
    font-weight: 740;
    white-space: nowrap;
  }

  .method-line b {
    color: var(--lime);
    font-family: var(--mono);
    font-size: 0.61rem;
  }

  .method-line i {
    width: 100%;
    height: 1px;
    background: var(--line);
  }

  .home-section {
    padding: 7rem 0;
  }

  .chapter-explainer {
    display: grid;
    grid-template-columns: minmax(150px, 0.42fr) minmax(0, 1fr);
    align-items: stretch;
    margin-bottom: 1rem;
    border: 1px solid var(--line-strong);
    background:
      linear-gradient(90deg, rgba(200, 255, 92, 0.055), transparent 42%),
      rgba(10, 36, 45, 0.54);
  }

  .chapter-explainer > p {
    display: flex;
    align-items: center;
    padding: 0.85rem 1rem;
    border-right: 1px solid var(--line);
    color: var(--lime);
    font-family: var(--mono);
    font-size: 0.62rem;
    font-weight: 760;
    letter-spacing: 0.1em;
    line-height: 1.35;
    text-transform: uppercase;
  }

  .chapter-explainer ol {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 0;
    list-style: none;
  }

  .chapter-explainer li {
    position: relative;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 0.65rem;
    min-height: 58px;
    padding: 0.7rem 1rem;
  }

  .chapter-explainer li + li {
    border-left: 1px solid var(--line);
  }

  .chapter-explainer li + li::before {
    position: absolute;
    top: 50%;
    left: -5px;
    width: 9px;
    height: 9px;
    transform: translateY(-50%) rotate(45deg);
    border-top: 1px solid var(--line-strong);
    border-right: 1px solid var(--line-strong);
    background: var(--ink-2);
    content: "";
  }

  .chapter-explainer span {
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.57rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .chapter-explainer strong {
    font-family: var(--display);
    font-size: 1rem;
    letter-spacing: -0.01em;
  }

  .mission-preview {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--line-strong);
    border-left: 1px solid var(--line-strong);
  }

  .preview-card {
    position: relative;
    display: grid;
    min-height: 315px;
    align-content: start;
    gap: 0.8rem;
    padding: 1.2rem;
    overflow: hidden;
    border-right: 1px solid var(--line-strong);
    border-bottom: 1px solid var(--line-strong);
    text-align: left;
  }

  .preview-card::before {
    position: absolute;
    inset: auto -25% -45% auto;
    width: 230px;
    height: 230px;
    border: 1px solid rgba(var(--accent-rgb), 0.25);
    border-radius: 50%;
    content: "";
    box-shadow:
      0 0 0 35px rgba(var(--accent-rgb), 0.025),
      0 0 0 70px rgba(var(--accent-rgb), 0.018);
    transition: transform 260ms var(--ease);
  }

  .preview-card:hover {
    background: rgba(var(--accent-rgb), 0.06);
  }

  .preview-card:hover::before {
    transform: translate(-10%, -10%);
  }

  .preview-number {
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.65rem;
  }

  .preview-symbol {
    display: grid;
    width: 70px;
    height: 70px;
    place-items: center;
    margin: 1.2rem 0 0.5rem;
    border: 1px solid rgba(var(--accent-rgb), 0.52);
    border-radius: 50%;
    color: var(--accent);
    font-family: var(--mono);
    font-size: 1.1rem;
  }

  .preview-card strong {
    position: relative;
    z-index: 1;
    font-family: var(--display);
    font-size: 1.45rem;
    letter-spacing: -0.02em;
  }

  .preview-card small {
    position: relative;
    z-index: 1;
    max-width: 260px;
    color: var(--paper-muted);
    font-size: 0.78rem;
    line-height: 1.5;
  }

  .preview-arrow {
    position: absolute;
    top: 1rem;
    right: 1rem;
    color: var(--accent);
  }

  .wide-link {
    display: flex;
    width: 100%;
    align-items: center;
    justify-content: space-between;
    min-height: 72px;
    padding: 1rem 1.2rem;
    border-right: 1px solid var(--line-strong);
    border-bottom: 1px solid var(--line-strong);
    border-left: 1px solid var(--line-strong);
    font-weight: 780;
    text-align: left;
  }

  .wide-link:hover {
    background: var(--lime);
    color: var(--ink);
  }

  .trust-section {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 5rem;
    margin: 0 -3rem;
    padding: 6rem 3rem;
    border-top: 1px solid var(--line);
    background: #0a242d;
  }

  .trust-statement h2 {
    max-width: 620px;
    margin-top: 1rem;
  }

  .trust-points {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid var(--line);
    border-left: 1px solid var(--line);
  }

  .trust-points article {
    min-height: 250px;
    padding: 1.4rem;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .trust-number {
    display: block;
    margin-bottom: 2.6rem;
    color: var(--lime);
    font-family: var(--display);
    font-size: 3.4rem;
    font-weight: 760;
    line-height: 1;
  }

  .trust-points h3 {
    margin-bottom: 0.65rem;
    font-size: 1.2rem;
  }

  .trust-points p {
    color: var(--paper-muted);
    font-size: 0.78rem;
  }

  .progress-overview {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(280px, 0.55fr);
    align-items: center;
    gap: clamp(1.4rem, 3vw, 3rem);
    margin: 3rem 3rem 2rem;
    padding: 1.6rem;
    overflow: hidden;
    border: 1px solid var(--line-strong);
    background:
      linear-gradient(115deg, rgba(200, 255, 92, 0.055), transparent 38%),
      #0a242d;
    box-shadow: 0 18px 48px rgba(0, 8, 12, 0.2);
  }

  .progress-overview::before {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    height: 2px;
    content: "";
    background: linear-gradient(90deg, var(--lime), rgba(200, 255, 92, 0));
  }

  .overview-copy > strong {
    display: block;
    margin: 0.55rem 0 0.25rem;
    font-family: var(--display);
    font-size: clamp(1.55rem, 2.2vw, 2.05rem);
    line-height: 1.04;
  }

  .overview-copy > p:last-child {
    color: var(--paper-muted);
    font-size: 0.78rem;
  }

  .overview-meter > span,
  .summary-ring {
    display: grid;
    width: 120px;
    aspect-ratio: 1;
    place-content: center;
    border: 1px solid var(--line);
    border-radius: 50%;
    background:
      radial-gradient(circle at center, var(--ink-2) 61%, transparent 63%),
      conic-gradient(var(--lime) var(--value), rgba(243, 240, 229, 0.1) 0);
    box-shadow:
      inset 0 0 24px rgba(200, 255, 92, 0.04),
      0 0 0 8px rgba(200, 255, 92, 0.018);
    text-align: center;
  }

  .overview-meter b,
  .overview-meter small {
    display: block;
  }

  .overview-meter b {
    font-family: var(--display);
    font-size: 1.45rem;
  }

  .overview-meter small {
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.55rem;
    text-transform: uppercase;
  }

  .next-card {
    position: relative;
    display: grid;
    gap: 0.35rem;
    min-height: 118px;
    padding: 1rem 1.1rem;
    border: 1px solid rgba(var(--accent-rgb), 0.24);
    border-left: 3px solid var(--accent);
    background: rgba(var(--accent-rgb), 0.08);
    text-align: left;
  }

  .next-card:hover,
  .next-card:focus-visible {
    border-color: rgba(var(--accent-rgb), 0.58);
    background: rgba(var(--accent-rgb), 0.14);
  }

  .next-card small {
    color: var(--accent);
    font-family: var(--mono);
    font-size: 0.58rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }

  .next-card strong {
    font-family: var(--display);
    font-size: 1.15rem;
  }

  .next-card > span {
    display: flex;
    justify-content: space-between;
    color: var(--paper-muted);
    font-size: 0.7rem;
  }

  .next-card i {
    color: var(--accent);
    font-style: normal;
  }

  .mission-map {
    padding: 0.5rem 3rem 4rem;
  }

  .map-row {
    position: relative;
    display: grid;
    grid-template-columns: 74px minmax(0, 1fr);
    isolation: isolate;
  }

  .map-rail {
    position: relative;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 1.65rem;
  }

  .map-rail span {
    position: relative;
    z-index: 2;
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    border: 1px solid rgba(var(--accent-rgb), 0.5);
    border-radius: 50%;
    background: var(--ink);
    color: var(--accent);
    font-family: var(--mono);
    font-size: 0.67rem;
    box-shadow: 0 0 0 7px var(--ink);
  }

  .map-rail i {
    position: absolute;
    top: 58px;
    bottom: -18px;
    left: 50%;
    width: 1px;
    background: var(--line);
  }

  .map-row:has(.mission-status.is-complete) .map-rail span {
    border-color: var(--accent);
    background: var(--accent);
    color: var(--ink);
    font-weight: 850;
  }

  .map-row:has(.task-dots .is-done):not(:has(.mission-status.is-complete)) .map-rail span {
    background: rgba(var(--accent-rgb), 0.1);
    box-shadow:
      0 0 0 7px var(--ink),
      0 0 24px rgba(var(--accent-rgb), 0.14);
  }

  .mission-card {
    position: relative;
    display: grid;
    grid-template-columns: minmax(135px, 0.72fr) minmax(0, 2fr) minmax(190px, 0.9fr);
    gap: clamp(1rem, 2vw, 1.8rem);
    min-height: 200px;
    margin-bottom: 1rem;
    padding: 1.4rem;
    overflow: hidden;
    border: 1px solid var(--line);
    background:
      linear-gradient(100deg, rgba(var(--accent-rgb), 0.028), transparent 45%),
      rgba(10, 36, 45, 0.78);
    box-shadow: 0 12px 34px rgba(0, 8, 12, 0.12);
    text-align: left;
  }

  .mission-card::after {
    position: absolute;
    inset: 0 auto 0 0;
    width: 3px;
    transform: scaleY(0.25);
    transform-origin: center;
    background: var(--accent);
    content: "";
    opacity: 0;
    transition:
      transform 180ms var(--ease),
      opacity 180ms var(--ease);
  }

  .mission-card:hover,
  .mission-card:focus-visible {
    transform: translateX(5px);
    border-color: rgba(var(--accent-rgb), 0.68);
    background: rgba(var(--accent-rgb), 0.055);
  }

  .mission-card:hover::after,
  .mission-card:focus-visible::after,
  .mission-card:has(.task-dots .is-done)::after {
    transform: scaleY(1);
    opacity: 1;
  }

  .mission-card:has(.task-dots .is-done):not(:has(.mission-status.is-complete)) {
    border-color: rgba(var(--accent-rgb), 0.34);
  }

  .mission-card:has(.mission-status.is-complete) {
    border-color: rgba(var(--accent-rgb), 0.45);
    background:
      linear-gradient(100deg, rgba(var(--accent-rgb), 0.085), transparent 52%),
      rgba(10, 36, 45, 0.82);
  }

  .mission-card-head,
  .mission-card-copy,
  .mission-card-foot {
    display: flex;
    flex-direction: column;
  }

  .mission-card-head {
    justify-content: space-between;
  }

  .mission-symbol {
    display: grid;
    width: 64px;
    height: 64px;
    place-items: center;
    border: 1px solid rgba(var(--accent-rgb), 0.46);
    border-radius: 50%;
    color: var(--accent);
    font-family: var(--mono);
    font-size: 0.95rem;
  }

  .mission-status {
    width: max-content;
    min-height: 28px;
    padding: 0.35rem 0.5rem;
    border: 1px solid var(--line);
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.58rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .mission-status.is-complete {
    border-color: var(--accent);
    background: var(--accent);
    color: var(--ink);
    font-weight: 850;
  }

  .mission-card-copy {
    justify-content: center;
  }

  .mission-card-copy p {
    margin-bottom: 0.6rem;
    color: var(--accent);
    font-family: var(--mono);
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }

  .mission-card-copy h2 {
    max-width: 620px;
    font-size: clamp(1.8rem, 3vw, 3.2rem);
    line-height: 1.03;
  }

  .mission-tags {
    display: flex;
    align-content: center;
    align-items: center;
    align-self: center;
    flex-wrap: wrap;
    gap: 0.35rem;
  }

  .mission-tags span,
  .goal-missions span,
  .role-tags span {
    padding: 0.3rem 0.45rem;
    border: 1px solid var(--line);
    color: var(--paper-muted);
    font-size: 0.64rem;
    line-height: 1.25;
  }

  .mission-card-foot {
    grid-column: 1 / -1;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid var(--line);
  }

  .task-dots {
    display: grid;
    width: min(100%, 340px);
    flex: 1;
    grid-template-columns: repeat(8, minmax(8px, 1fr));
    gap: 0.28rem;
  }

  .task-dots i {
    position: relative;
    width: auto;
    height: 5px;
    background: rgba(243, 240, 229, 0.12);
  }

  .task-dots i:nth-child(5) {
    margin-left: 0.35rem;
  }

  .task-dots i:nth-child(5)::before {
    position: absolute;
    top: -3px;
    bottom: -3px;
    left: -0.32rem;
    width: 1px;
    background: var(--line-strong);
    content: "";
  }

  .task-dots i.is-done {
    background: var(--accent);
    box-shadow: 0 0 10px rgba(var(--accent-rgb), 0.16);
  }

  .mission-card-foot > span {
    flex: 0 0 auto;
    color: var(--paper-muted);
    font-size: 0.7rem;
  }

  .mission-card-foot b {
    margin-left: 0.4rem;
    color: var(--accent);
  }

  .map-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin: 0 3rem 5rem 7.6rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--line);
  }

  .mission-view {
    width: 100%;
    max-width: none;
  }

  .mission-top {
    position: sticky;
    top: var(--topbar-height);
    z-index: 65;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    min-height: 84px;
    padding: 0 2.2rem;
    border-bottom: 1px solid var(--line);
    background:
      linear-gradient(90deg, rgba(var(--accent-rgb), 0.055), transparent 45%),
      rgba(7, 28, 36, 0.96);
    backdrop-filter: blur(18px);
  }

  .back-button {
    justify-self: start;
    color: var(--paper-muted);
    font-size: 0.76rem;
    font-weight: 720;
  }

  .back-button:hover {
    color: var(--accent);
  }

  .back-button span {
    margin-right: 0.45rem;
  }

  .mission-identity {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    justify-self: center;
  }

  .mission-identity .mission-symbol {
    width: 44px;
    height: 44px;
    font-size: 0.72rem;
  }

  .mission-identity small,
  .mission-identity strong {
    display: block;
  }

  .mission-identity small {
    color: var(--accent);
    font-family: var(--mono);
    font-size: 0.56rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }

  .mission-identity strong {
    font-family: var(--display);
    font-size: 1.05rem;
  }

  .mission-task-count {
    justify-self: end;
    padding: 0.38rem 0.55rem;
    border: 1px solid var(--line);
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.63rem;
  }

  .mission-stage {
    display: grid;
    grid-template-columns: 320px minmax(0, 1fr);
    min-height: calc(100vh - var(--topbar-height) - 84px);
  }

  .mission-sidebar {
    position: sticky;
    top: calc(var(--topbar-height) + 84px);
    display: flex;
    min-height: 0;
    align-self: start;
    height: calc(100vh - var(--topbar-height) - 84px);
    flex-direction: column;
    padding: 1.2rem 1rem 1rem;
    overflow: hidden;
    border-right: 1px solid var(--line);
    background:
      linear-gradient(180deg, rgba(var(--accent-rgb), 0.04), transparent 32%),
      #081f27;
    overscroll-behavior: contain;
  }

  .sidebar-progress {
    position: relative;
    flex: 0 0 auto;
    height: 3px;
    margin-bottom: 1.15rem;
    background: rgba(243, 240, 229, 0.1);
  }

  .sidebar-progress span {
    display: block;
    height: 100%;
    background: var(--accent);
    box-shadow: 0 0 14px rgba(var(--accent-rgb), 0.32);
    transition: width 320ms var(--ease);
  }

  .chapter-tabs {
    display: grid;
    flex: 0 0 auto;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.35rem;
    margin: 0.5rem 0 0.65rem;
  }

  .chapter-tab {
    position: relative;
    display: grid;
    min-height: 46px;
    align-content: center;
    gap: 0.12rem;
    padding: 0.5rem 0.58rem 0.5rem 0.75rem;
    border: 1px solid var(--line);
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.57rem;
    font-weight: 720;
    letter-spacing: 0.045em;
    line-height: 1.25;
    text-align: left;
    text-transform: uppercase;
  }

  .chapter-tab::before {
    position: absolute;
    top: 50%;
    left: 0;
    width: 2px;
    height: 18px;
    transform: translateY(-50%) scaleY(0.4);
    background: var(--accent);
    content: "";
    opacity: 0;
    transition:
      transform 180ms var(--ease),
      opacity 180ms var(--ease);
  }

  .chapter-tab:hover {
    border-color: var(--line-strong);
    color: var(--paper);
  }

  .chapter-tab:focus-visible {
    outline-offset: 1px;
  }

  .chapter-tab.is-active {
    border-color: rgba(var(--accent-rgb), 0.68);
    background: rgba(var(--accent-rgb), 0.1);
    color: var(--paper);
  }

  .chapter-tab.is-active::before {
    transform: translateY(-50%) scaleY(1);
    opacity: 1;
  }

  .chapter-tab.is-complete {
    border-color: rgba(var(--accent-rgb), 0.36);
    color: var(--accent);
  }

  .chapter-tab.is-complete:not(.is-active) {
    background: rgba(var(--accent-rgb), 0.045);
  }

  .chapter-tab small,
  .chapter-tab strong {
    display: block;
  }

  .chapter-tab small {
    color: inherit;
    font-size: 0.5rem;
    font-weight: 600;
    opacity: 0.78;
  }

  .chapter-tab strong {
    font-family: var(--body);
    font-size: 0.67rem;
    letter-spacing: 0;
    text-transform: none;
  }

  .mission-sidebar-stats {
    display: grid;
    flex: 0 0 auto;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px;
    margin-bottom: 0.55rem;
    border: 1px solid var(--line);
    background: var(--line);
  }

  .mission-sidebar-stat {
    display: grid;
    min-height: 48px;
    align-content: center;
    gap: 0.1rem;
    padding: 0.45rem 0.55rem;
    background: #081f27;
  }

  .mission-sidebar-stat span,
  .mission-sidebar-stat small {
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.48rem;
    letter-spacing: 0.07em;
    line-height: 1.2;
    text-transform: uppercase;
  }

  .mission-sidebar-stat strong {
    color: var(--paper);
    font-family: var(--display);
    font-size: 0.86rem;
    line-height: 1.1;
  }

  .task-step-list {
    display: flex;
    min-height: 0;
    flex: 1 1 auto;
    flex-direction: column;
    gap: 0.65rem;
    margin-top: 0.55rem;
    padding: 0.1rem 0.3rem 0.55rem 0;
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    scrollbar-color: rgba(var(--accent-rgb), 0.45) transparent;
    scrollbar-gutter: stable;
    scrollbar-width: thin;
  }

  .task-step-list::-webkit-scrollbar {
    width: 5px;
  }

  .task-step-list::-webkit-scrollbar-thumb {
    background: rgba(var(--accent-rgb), 0.42);
  }

  .task-stage-group {
    display: grid;
    align-content: start;
    gap: 0.28rem;
    grid-auto-rows: max-content;
  }

  .task-step-list.task-stage-group {
    flex: 1 1 auto;
  }

  .task-stage-group + .task-stage-group {
    padding-top: 0.35rem;
    border-top: 1px solid var(--line);
  }

  .stage-heading {
    display: grid;
    flex: 0 0 auto;
    gap: 0.1rem;
    min-height: 48px;
    align-content: center;
    margin-top: 0.1rem;
    padding: 0.45rem 0.55rem;
    border-left: 2px solid var(--accent);
    background: rgba(var(--accent-rgb), 0.055);
    font-family: var(--mono);
    line-height: 1.25;
  }

  .stage-heading strong {
    color: var(--accent);
    font-size: 0.58rem;
    letter-spacing: 0.07em;
    text-transform: uppercase;
  }

  .stage-heading span {
    color: var(--paper-muted);
    font-size: 0.49rem;
  }

  .task-step-list button {
    position: relative;
    display: grid;
    width: 100%;
    grid-template-columns: 36px minmax(0, 1fr);
    align-items: center;
    gap: 0.7rem;
    min-height: 58px;
    padding: 0.55rem 0.62rem;
    border: 1px solid transparent;
    border-left: 3px solid transparent;
    color: var(--paper-muted);
    text-align: left;
  }

  .task-step-list button:hover {
    border-color: var(--line-strong);
    color: var(--paper);
  }

  .task-step-list button:focus-visible {
    outline-offset: 1px;
  }

  .task-step-list button.is-active {
    border-color: rgba(var(--accent-rgb), 0.58);
    border-left-color: var(--accent);
    background:
      linear-gradient(90deg, rgba(var(--accent-rgb), 0.13), transparent 88%),
      rgba(var(--accent-rgb), 0.035);
    color: var(--paper);
    box-shadow: inset 8px 0 20px rgba(var(--accent-rgb), 0.035);
  }

  .task-step-list button.is-done:not(.is-active) {
    background: rgba(var(--accent-rgb), 0.025);
    color: var(--paper);
  }

  .task-step-list button.is-done > span {
    border-color: var(--accent);
    background: rgba(var(--accent-rgb), 0.1);
    color: var(--accent);
  }

  .task-step-list button.is-active > span {
    border-color: var(--accent);
    background: var(--accent);
    color: var(--ink);
    font-weight: 850;
  }

  .task-step-list button > span {
    display: grid;
    width: 32px;
    height: 32px;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 50%;
    font-family: var(--mono);
    font-size: 0.58rem;
  }

  .task-step-list small,
  .task-step-list strong {
    display: block;
  }

  .task-step-list small {
    color: var(--accent);
    font-family: var(--mono);
    font-size: 0.52rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .task-step-list strong {
    margin-top: 0.2rem;
    font-size: 0.7rem;
    line-height: 1.35;
  }

  .sidebar-tool {
    display: flex;
    width: 100%;
    min-height: 44px;
    flex: 0 0 auto;
    align-items: center;
    gap: 0.65rem;
    margin-top: 0.55rem;
    padding: 0.75rem;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    color: var(--paper-muted);
    font-size: 0.7rem;
    text-align: left;
  }

  .sidebar-tool:hover,
  .sidebar-tool:focus-visible {
    color: var(--accent);
  }

  .sidebar-tool span {
    color: var(--accent);
    font-family: var(--mono);
  }

  .task-column {
    width: min(100%, 1000px);
    margin: 0 auto;
    padding: clamp(2rem, 5vw, 5rem);
  }

  .task-card {
    position: relative;
    padding: clamp(1.3rem, 4vw, 3.5rem);
    overflow: hidden;
    border: 1px solid var(--line-strong);
    background:
      linear-gradient(135deg, rgba(var(--accent-rgb), 0.045), transparent 28%),
      #0a242d;
    box-shadow: var(--shadow);
  }

  .task-card::before {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    height: 2px;
    content: "";
    background: linear-gradient(90deg, var(--accent), rgba(var(--accent-rgb), 0));
  }

  .chapter-kicker {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    margin-bottom: 0.7rem;
    color: var(--accent);
    font-family: var(--mono);
    font-size: 0.62rem;
    font-weight: 760;
    letter-spacing: 0.1em;
    line-height: 1.35;
    text-transform: uppercase;
  }

  .chapter-kicker::before {
    width: 22px;
    height: 1px;
    background: var(--accent);
    content: "";
  }

  .task-mode-badge {
    display: inline-flex;
    min-height: 27px;
    align-items: center;
    gap: 0.35rem;
    padding: 0.3rem 0.5rem;
    border: 1px solid rgba(var(--accent-rgb), 0.58);
    background: rgba(var(--accent-rgb), 0.08);
    color: var(--accent);
    font-family: var(--mono);
    font-size: 0.55rem;
    font-weight: 760;
    letter-spacing: 0.075em;
    line-height: 1.2;
    text-transform: uppercase;
  }

  .task-mode-badge::before {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: currentColor;
    content: "";
    box-shadow: 0 0 8px currentColor;
  }

  .task-meta .task-mode-badge {
    border-color: rgba(var(--accent-rgb), 0.58);
    background: rgba(var(--accent-rgb), 0.08);
    color: var(--accent);
  }

  .task-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1.25rem;
  }

  .task-meta span {
    padding: 0.3rem 0.45rem;
    border: 1px solid var(--line);
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.56rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .task-meta span:first-child {
    border-color: rgba(var(--accent-rgb), 0.58);
    color: var(--accent);
  }

  .task-context {
    max-width: 760px;
    margin-bottom: 0.9rem;
    color: var(--paper-muted);
    font-size: 0.91rem;
    line-height: 1.65;
  }

  .task-card > h1 {
    max-width: 820px;
    margin-bottom: 2rem;
    font-size: clamp(2.3rem, 5vw, 4.8rem);
    line-height: 0.98;
  }

  .evidence-visual {
    margin: 2rem 0;
    padding: 1rem;
    border: 1px solid var(--line);
    background: var(--ink);
  }

  .variable-groups {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.65rem;
  }

  .variable-groups > div {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.3rem;
    padding: 0.75rem;
    border-left: 2px solid var(--accent);
    background: rgba(var(--accent-rgb), 0.05);
  }

  .variable-groups strong {
    grid-column: 1 / -1;
    margin-bottom: 0.3rem;
    color: var(--accent);
    font-family: var(--mono);
    font-size: 0.68rem;
  }

  .variable-groups span {
    color: var(--paper-muted);
    font-size: 0.72rem;
  }

  .variable-visual > p {
    display: flex;
    justify-content: space-between;
    margin-top: 0.65rem;
    padding: 0.65rem 0.75rem;
    border: 1px dashed var(--line);
    font-size: 0.78rem;
  }

  .variable-visual > p span {
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.61rem;
    text-transform: uppercase;
  }

  .hazard-visual {
    display: flex;
    align-items: center;
    gap: 1.2rem;
  }

  .hazard-flask {
    position: relative;
    display: block;
    width: 78px;
    height: 86px;
    border: 2px solid var(--accent);
    border-top: 0;
    clip-path: polygon(35% 0, 65% 0, 65% 35%, 95% 90%, 90% 100%, 10% 100%, 5% 90%, 35% 35%);
    background: rgba(var(--accent-rgb), 0.12);
  }

  .hazard-visual > div {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
  }

  .hazard-visual p {
    width: 100%;
    color: var(--accent);
    font-family: var(--mono);
    font-size: 0.66rem;
  }

  .hazard-visual strong {
    padding: 0.3rem 0.45rem;
    border: 1px solid var(--line);
    font-size: 0.68rem;
  }

  .wave-canvas {
    display: block;
    width: 100%;
    height: 180px;
  }

  .wave-visual label,
  .range-visual label {
    display: grid;
    gap: 0.7rem;
    margin-top: 0.8rem;
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.65rem;
  }

  .wave-visual label b,
  .range-visual label b {
    color: var(--accent);
  }

  .model-slider {
    width: 100%;
    accent-color: var(--accent);
  }

  .wave-metrics {
    display: flex;
    justify-content: space-between;
    margin-top: 0.8rem;
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.6rem;
  }

  .wave-metrics b {
    margin-left: 0.4rem;
    color: var(--paper);
  }

  .signal-flow {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
  }

  .signal-flow span {
    min-width: 100px;
    padding: 0.6rem;
    border: 1px solid rgba(var(--accent-rgb), 0.42);
    color: var(--accent);
    font-family: var(--mono);
    font-size: 0.62rem;
    text-align: center;
    text-transform: uppercase;
  }

  .signal-flow i {
    color: var(--paper-muted);
    font-style: normal;
  }

  .signal-visual code {
    display: block;
    margin-top: 0.85rem;
    padding: 0.7rem;
    background: rgba(var(--accent-rgb), 0.06);
    color: var(--paper);
    font-size: 1rem;
    letter-spacing: 0.3em;
    text-align: center;
  }

  .spectrum-arrow {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 0.7rem;
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.58rem;
  }

  .spectrum-arrow i {
    position: relative;
    height: 1px;
    background: var(--accent);
  }

  .spectrum-arrow i::after {
    position: absolute;
    top: -3px;
    right: 0;
    width: 7px;
    height: 7px;
    border-top: 1px solid var(--accent);
    border-right: 1px solid var(--accent);
    content: "";
    transform: rotate(45deg);
  }

  .spectrum-labels {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    margin-top: 0.8rem;
  }

  .spectrum-labels span {
    padding: 0.65rem 0.4rem;
    border: 1px solid var(--line);
    border-right: 0;
    font-size: 0.7rem;
    text-align: center;
  }

  .spectrum-labels span:last-child {
    border-right: 1px solid var(--line);
  }

  .redshift-visual {
    display: grid;
    gap: 0.65rem;
  }

  .redshift-visual > div {
    display: grid;
    grid-template-columns: 70px 1fr 90px;
    align-items: center;
    gap: 0.7rem;
  }

  .redshift-visual span,
  .redshift-visual small {
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.58rem;
  }

  .redshift-visual i {
    position: relative;
    height: 24px;
    border: 1px solid var(--line);
    background:
      linear-gradient(90deg, rgba(120, 170, 255, 0.35), rgba(101, 220, 223, 0.25), rgba(255, 202, 98, 0.28), rgba(255, 128, 106, 0.4));
  }

  .redshift-visual b {
    position: absolute;
    top: 0;
    width: 3px;
    height: 100%;
    background: var(--paper);
    box-shadow: 0 0 8px var(--paper);
  }

  .particle-visual {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
  }

  .particle-visual > div > span {
    display: block;
    margin-bottom: 0.55rem;
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.6rem;
  }

  .particle-field {
    position: relative;
    height: 150px;
    border: 1px solid var(--line);
  }

  .particle-field i {
    position: absolute;
    top: calc(12% + (var(--n) % 3) * 32%);
    left: calc(8% + (var(--n) % 4) * 27%);
    display: grid;
    width: 25px;
    height: 25px;
    place-items: center;
    border: 1px solid var(--accent);
    border-radius: 50%;
    color: var(--accent);
    font-family: var(--mono);
    font-size: 0.7rem;
  }

  .particle-field.is-mobile i:nth-child(odd) {
    transform: translate(12px, -5px);
  }

  .particle-field.is-mobile i:nth-child(3n) {
    transform: translate(-8px, 9px);
  }

  .equation-visual {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 1rem;
    text-align: center;
  }

  .equation-visual span {
    padding: 0.7rem;
    border: 1px solid var(--line);
    color: var(--paper-muted);
    font-size: 0.78rem;
  }

  .equation-visual b {
    color: var(--accent);
  }

  .foodchain-visual {
    display: flex;
    min-height: 230px;
    align-items: flex-end;
    gap: 1.2rem;
    padding-top: 2rem;
  }

  .foodchain-visual > div {
    position: relative;
    display: grid;
    grid-template-rows: auto 135px auto;
    width: 25%;
    align-items: end;
    gap: 0.35rem;
    text-align: center;
  }

  .foodchain-visual span {
    color: var(--paper-muted);
    font-size: 0.66rem;
  }

  .foodchain-visual i {
    width: 42px;
    max-height: 135px;
    min-height: 6px;
    align-self: end;
    justify-self: center;
    background: var(--accent);
    opacity: 0.86;
  }

  .foodchain-visual b {
    font-family: var(--mono);
    font-size: 0.6rem;
  }

  .foodchain-visual em {
    position: absolute;
    right: -1.2rem;
    bottom: 65px;
    color: var(--paper-muted);
    font-style: normal;
  }

  .foodchain-visual > small {
    position: absolute;
    align-self: flex-start;
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.54rem;
  }

  .bar-visual,
  .generation-visual {
    display: grid;
    gap: 0.75rem;
  }

  .bar-visual > div,
  .generation-visual > div {
    display: grid;
    grid-template-columns: minmax(140px, 0.38fr) 1fr 48px;
    align-items: center;
    gap: 0.8rem;
  }

  .bar-visual span,
  .generation-visual span {
    color: var(--paper-muted);
    font-size: 0.72rem;
  }

  .bar-visual i,
  .generation-visual i {
    height: 22px;
    border: 1px solid var(--line);
  }

  .bar-visual i b,
  .generation-visual i b {
    display: block;
    height: 100%;
    background: var(--accent);
  }

  .bar-visual strong,
  .generation-visual strong {
    font-family: var(--mono);
    font-size: 0.65rem;
  }

  .bar-visual > small,
  .generation-visual > small {
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.55rem;
    text-align: right;
  }

  .correlation-visual {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 1rem;
  }

  .correlation-axis {
    position: relative;
    height: 210px;
    margin: 0 0 1.8rem 2.4rem;
    border-bottom: 1px solid var(--paper-muted);
    border-left: 1px solid var(--paper-muted);
  }

  .correlation-axis i {
    position: absolute;
    top: calc(var(--y) * 1%);
    left: calc(var(--x) * 1%);
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent);
  }

  .correlation-axis > b {
    position: absolute;
    top: 50%;
    left: 4%;
    width: 91%;
    height: 1px;
    transform: rotate(-24deg);
    background: rgba(var(--accent-rgb), 0.5);
  }

  .axis-x,
  .axis-y {
    position: absolute;
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.55rem;
  }

  .axis-x {
    right: 0;
    bottom: -1.5rem;
  }

  .axis-y {
    top: 50%;
    left: -4.2rem;
    transform: rotate(-90deg);
  }

  .correlation-visual > p {
    max-width: 150px;
    color: var(--accent);
    font-family: var(--mono);
    font-size: 0.7rem;
  }

  .range-result {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    padding: 1rem;
    border-left: 3px solid var(--accent);
    background: rgba(var(--accent-rgb), 0.07);
  }

  .range-result span {
    color: var(--paper-muted);
    font-size: 0.75rem;
  }

  .range-result strong {
    color: var(--accent);
    font-family: var(--display);
    font-size: 2rem;
  }

  .code-visual {
    padding: 0;
    overflow: hidden;
  }

  .code-bar {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.65rem 0.8rem;
    border-bottom: 1px solid var(--line);
    background: rgba(243, 240, 229, 0.035);
  }

  .code-bar span {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--paper-muted);
    opacity: 0.5;
  }

  .code-bar b {
    margin-left: 0.4rem;
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.55rem;
    font-weight: 500;
  }

  .code-visual pre {
    padding: 1rem;
    overflow-x: auto;
    color: var(--paper);
    font-family: var(--mono);
    font-size: 0.74rem;
    line-height: 1.9;
  }

  .code-visual pre span {
    display: block;
  }

  .code-visual pre i {
    display: inline-block;
    width: 35px;
    color: var(--paper-muted);
    font-style: normal;
  }

  .task-form {
    margin-top: 2rem;
  }

  .task-form fieldset {
    min-width: 0;
    padding: 0;
    border: 0;
  }

  .task-form legend {
    margin-bottom: 0.75rem;
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.64rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .option-list {
    display: grid;
    gap: 0.55rem;
  }

  .answer-option {
    display: grid;
    grid-template-columns: 42px 1fr;
    align-items: center;
    gap: 0.8rem;
    min-height: 68px;
    padding: 0.7rem 0.85rem;
    border: 1px solid var(--line);
    background: rgba(243, 240, 229, 0.015);
    color: var(--paper-muted);
    line-height: 1.45;
    text-align: left;
  }

  .answer-option:hover:not(:disabled) {
    transform: translateX(3px);
    border-color: rgba(var(--accent-rgb), 0.52);
    color: var(--paper);
  }

  .answer-option.is-selected {
    border-color: var(--accent);
    background: rgba(var(--accent-rgb), 0.08);
    color: var(--paper);
  }

  .answer-option.is-correct {
    border-color: var(--lime);
    background: rgba(200, 255, 92, 0.08);
    color: var(--paper);
  }

  .answer-option.is-wrong {
    border-color: var(--danger);
    opacity: 0.72;
  }

  .option-marker {
    display: grid;
    width: 34px;
    height: 34px;
    place-items: center;
    border: 1px solid var(--line-strong);
    border-radius: 50%;
    color: var(--paper);
    font-family: var(--mono);
    font-size: 0.68rem;
  }

  .answer-option.is-selected .option-marker,
  .answer-option.is-correct .option-marker {
    border-color: var(--accent);
    background: var(--accent);
    color: var(--ink);
  }

  .task-actions,
  .feedback-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.65rem;
    margin-top: 1rem;
  }

  .hint-button {
    min-height: 45px;
    padding: 0.6rem 0.8rem;
    border-bottom: 1px solid var(--line);
    color: var(--paper-muted);
    font-size: 0.72rem;
  }

  .hint-button:hover:not(:disabled) {
    border-color: var(--accent);
    color: var(--accent);
  }

  .hint-button:disabled {
    opacity: 0.55;
  }

  .sequence-slots {
    display: grid;
    gap: 0.5rem;
    margin-bottom: 0.8rem;
  }

  .sequence-slots > div {
    display: grid;
    grid-template-columns: minmax(100px, 0.25fr) 1fr;
    align-items: center;
    gap: 0.7rem;
    min-height: 54px;
    padding: 0.55rem 0.7rem;
    border: 1px dashed var(--line);
  }

  .sequence-slots > div.is-filled {
    border-style: solid;
    border-color: rgba(var(--accent-rgb), 0.5);
    background: rgba(var(--accent-rgb), 0.05);
  }

  .sequence-slots small {
    color: var(--accent);
    font-family: var(--mono);
    font-size: 0.58rem;
  }

  .sequence-slots strong {
    font-size: 0.76rem;
  }

  .sequence-pool {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
  }

  .sequence-pool button {
    min-height: 42px;
    padding: 0.55rem 0.7rem;
    border: 1px solid var(--line-strong);
    color: var(--paper);
    font-size: 0.7rem;
  }

  .sequence-pool button:hover:not(:disabled) {
    border-color: var(--accent);
    background: rgba(var(--accent-rgb), 0.08);
  }

  .sequence-pool button:disabled {
    opacity: 0.24;
  }

  .hint-panel {
    display: grid;
    grid-template-columns: 38px 1fr;
    gap: 0.85rem;
    margin-top: 1rem;
    padding: 0.95rem;
    border: 1px solid rgba(var(--accent-rgb), 0.46);
    background: rgba(var(--accent-rgb), 0.05);
  }

  .hint-panel > span {
    display: grid;
    width: 34px;
    height: 34px;
    place-items: center;
    border: 1px solid var(--accent);
    border-radius: 50%;
    color: var(--accent);
    font-family: var(--mono);
  }

  .hint-panel strong {
    color: var(--accent);
    font-family: var(--mono);
    font-size: 0.62rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .hint-panel p {
    margin-top: 0.3rem;
    color: var(--paper-muted);
    font-size: 0.8rem;
  }

  .feedback-panel {
    display: grid;
    grid-template-columns: 54px 1fr;
    gap: 1rem;
    margin-top: 1.1rem;
    padding: 1.25rem;
    border: 1px solid var(--line-strong);
  }

  .feedback-panel.is-correct {
    border-color: rgba(200, 255, 92, 0.5);
    background: rgba(200, 255, 92, 0.045);
  }

  .feedback-panel.is-wrong {
    border-color: rgba(255, 140, 118, 0.5);
    background: rgba(255, 140, 118, 0.04);
  }

  .feedback-icon {
    display: grid;
    width: 48px;
    height: 48px;
    place-items: center;
    border: 1px solid currentColor;
    border-radius: 50%;
    color: var(--lime);
    font-family: var(--mono);
    font-size: 1.05rem;
  }

  .is-wrong .feedback-icon {
    color: var(--danger);
  }

  .feedback-copy h2 {
    margin: 0.5rem 0 0.65rem;
    font-size: 2rem;
  }

  .feedback-copy > p {
    max-width: 740px;
    color: var(--paper-muted);
    font-size: 0.86rem;
  }

  .feedback-status-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
  }

  .feedback-status-row > span {
    padding: 0.28rem 0.45rem;
    border: 1px solid rgba(200, 255, 92, 0.45);
    color: var(--lime);
    font-family: var(--mono);
    font-size: 0.55rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .misconception-note,
  .solution-note {
    margin-top: 1rem;
    padding: 0.8rem;
    border-left: 2px solid var(--line-strong);
    background: rgba(243, 240, 229, 0.025);
  }

  .misconception-note strong,
  .solution-note strong {
    color: var(--paper);
    font-family: var(--mono);
    font-size: 0.58rem;
    letter-spacing: 0.07em;
    text-transform: uppercase;
  }

  .misconception-note p,
  .solution-note p {
    margin-top: 0.3rem;
    color: var(--paper-muted);
    font-size: 0.78rem;
  }

  .reflection-field {
    display: grid;
    gap: 0.45rem;
    margin-top: 1.1rem;
    padding: 0.9rem;
    border: 1px solid var(--line);
  }

  .reflection-field > span,
  .reflection-field > small {
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.55rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .reflection-field > strong {
    font-size: 0.8rem;
  }

  .reflection-field textarea {
    width: 100%;
    padding: 0.75rem;
    resize: vertical;
    border: 1px solid var(--line);
    border-radius: 0;
    background: var(--ink);
    color: var(--paper);
    font-size: 0.82rem;
    line-height: 1.55;
  }

  .task-save-note {
    margin-top: 0.8rem;
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.58rem;
    text-align: center;
  }

  .task-save-note span {
    margin-right: 0.3rem;
    color: var(--lime);
    font-size: 0.5rem;
  }

  .completion-screen {
    display: flex;
    min-height: calc(100vh - var(--topbar-height));
    align-items: center;
    flex-direction: column;
    justify-content: center;
    padding: 5rem 2rem;
    text-align: center;
  }

  .completion-orbit {
    position: relative;
    display: grid;
    width: 180px;
    height: 180px;
    place-items: center;
    margin-bottom: 2rem;
    border: 1px solid rgba(var(--accent-rgb), 0.32);
    border-radius: 50%;
    box-shadow:
      0 0 0 30px rgba(var(--accent-rgb), 0.025),
      0 0 0 60px rgba(var(--accent-rgb), 0.018);
  }

  .completion-orbit::before,
  .completion-orbit::after {
    position: absolute;
    inset: 20%;
    border: 1px solid rgba(var(--accent-rgb), 0.25);
    border-radius: 50%;
    content: "";
  }

  .completion-orbit::after {
    inset: 43%;
    background: var(--accent);
  }

  .completion-orbit span {
    position: relative;
    z-index: 2;
    color: var(--ink);
    font-family: var(--mono);
    font-size: 0.75rem;
  }

  .completion-screen h1 {
    max-width: 900px;
    margin: 0.8rem 0 1rem;
    font-size: clamp(3.4rem, 8vw, 8rem);
  }

  .completion-lede {
    max-width: 650px;
    color: var(--paper-muted);
  }

  .completion-lede strong {
    color: var(--paper);
  }

  .completion-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(120px, 1fr));
    width: min(700px, 100%);
    margin-top: 2.5rem;
    border-top: 1px solid var(--line);
    border-left: 1px solid var(--line);
  }

  .completion-stats div {
    padding: 1rem;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .completion-stats strong,
  .completion-stats span {
    display: block;
  }

  .completion-stats strong {
    color: var(--accent);
    font-family: var(--display);
    font-size: 2.4rem;
  }

  .completion-stats span {
    color: var(--paper-muted);
    font-size: 0.68rem;
  }

  .completion-note {
    display: flex;
    max-width: 700px;
    gap: 0.7rem;
    margin-top: 1rem;
    padding: 0.9rem;
    border: 1px solid var(--line);
    color: var(--paper-muted);
    font-size: 0.76rem;
    text-align: left;
  }

  .completion-note > span {
    color: var(--accent);
  }

  .completion-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.65rem;
    margin-top: 1.5rem;
  }

  .curriculum-view,
  .teacher-view,
  .summary-view {
    padding-bottom: 6rem;
  }

  .curriculum-disclaimer {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 0.9rem;
    margin: 3rem;
    padding: 1.2rem;
    border: 1px solid rgba(255, 202, 98, 0.42);
    background: rgba(255, 202, 98, 0.04);
  }

  .curriculum-disclaimer > span {
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    border: 1px solid var(--amber);
    border-radius: 50%;
    color: var(--amber);
    font-family: var(--mono);
  }

  .curriculum-disclaimer strong {
    display: block;
    margin-bottom: 0.3rem;
  }

  .curriculum-disclaimer p {
    max-width: 900px;
    color: var(--paper-muted);
    font-size: 0.82rem;
  }

  .core-elements {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    margin: 0 3rem 3rem;
    border-top: 1px solid var(--line);
    border-left: 1px solid var(--line);
  }

  .core-elements article {
    min-height: 150px;
    padding: 1rem;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .core-elements span {
    display: block;
    margin-bottom: 2rem;
    color: var(--lime);
    font-family: var(--mono);
    font-size: 0.62rem;
  }

  .core-elements strong {
    font-size: 0.82rem;
    line-height: 1.35;
  }

  .curriculum-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin: 0 3rem 1.2rem;
  }

  .filter-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
  }

  .filter-button {
    min-height: 38px;
    padding: 0.45rem 0.7rem;
    border: 1px solid var(--line);
    color: var(--paper-muted);
    font-size: 0.69rem;
  }

  .filter-button:hover,
  .filter-button.is-active {
    border-color: var(--lime);
    background: rgba(200, 255, 92, 0.07);
    color: var(--paper);
  }

  .source-link {
    color: var(--paper-muted);
    font-size: 0.7rem;
    text-decoration: none;
  }

  .source-link:hover {
    color: var(--lime);
  }

  .curriculum-list {
    display: grid;
    gap: 0.55rem;
    margin: 0 3rem;
  }

  .goal-card {
    display: grid;
    grid-template-columns: 70px 1fr 42px;
    min-height: 150px;
    border: 1px solid var(--line);
    background: rgba(10, 36, 45, 0.7);
  }

  .goal-id {
    display: grid;
    place-items: center;
    border-right: 1px solid var(--line);
    color: var(--lime);
    font-family: var(--mono);
    font-size: 0.76rem;
  }

  .goal-copy {
    padding: 1.15rem 1.25rem;
  }

  .goal-title-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
  }

  .goal-title-row h2 {
    font-size: 1.55rem;
  }

  .goal-title-row span {
    padding: 0.28rem 0.45rem;
    border: 1px solid var(--line);
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.53rem;
    letter-spacing: 0.07em;
    text-transform: uppercase;
  }

  .goal-title-row span.has-progress {
    border-color: rgba(200, 255, 92, 0.38);
    color: var(--lime);
  }

  .goal-copy > p {
    max-width: 850px;
    margin: 0.5rem 0 0.8rem;
    color: var(--paper-muted);
    font-size: 0.8rem;
  }

  .goal-missions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
  }

  .goal-progress {
    display: flex;
    align-items: center;
    flex-direction: column;
    justify-content: flex-end;
    gap: 0.55rem;
    padding: 0.6rem 0;
    border-left: 1px solid var(--line);
  }

  .goal-progress > span {
    width: 5px;
    max-height: 90px;
    background: var(--lime);
  }

  .goal-progress small {
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.5rem;
    writing-mode: vertical-rl;
  }

  .teacher-hero {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: end;
    gap: 3rem;
    padding: 6.5rem 3rem 4rem;
    border-bottom: 1px solid var(--line);
  }

  .teacher-hero h1 {
    max-width: 1050px;
    margin-top: 1rem;
    font-size: clamp(3.8rem, 7vw, 7.5rem);
  }

  .teacher-badge {
    display: grid;
    width: 180px;
    aspect-ratio: 1;
    place-content: center;
    border: 1px solid var(--lime);
    border-radius: 50%;
    text-align: center;
  }

  .teacher-badge span,
  .teacher-badge strong,
  .teacher-badge small {
    display: block;
  }

  .teacher-badge span {
    color: var(--lime);
    font-family: var(--mono);
    font-size: 0.66rem;
  }

  .teacher-badge strong {
    margin: 0.3rem 0;
    font-family: var(--display);
    font-size: 1.8rem;
  }

  .teacher-badge small {
    color: var(--paper-muted);
    font-size: 0.56rem;
  }

  .teacher-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin: 3rem;
  }

  .teacher-card {
    min-height: 300px;
    padding: 1.4rem;
    border: 1px solid var(--line);
    background: #0a242d;
  }

  .teacher-card-wide {
    grid-column: 1 / -1;
  }

  .card-index {
    margin-bottom: 2rem;
    color: var(--lime);
    font-family: var(--mono);
    font-size: 0.6rem;
    letter-spacing: 0.1em;
  }

  .teacher-card h2 {
    max-width: 850px;
    margin-bottom: 1.2rem;
    font-size: 2.1rem;
  }

  .teacher-card > p:not(.card-index) {
    max-width: 900px;
    color: var(--paper-muted);
    font-size: 0.84rem;
  }

  .use-cases {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
  }

  .use-cases > div {
    min-height: 140px;
    padding: 0.9rem;
    border-left: 2px solid var(--lime);
    background: rgba(200, 255, 92, 0.035);
  }

  .use-cases strong {
    display: block;
    margin-bottom: 0.55rem;
    font-size: 0.85rem;
  }

  .use-cases p {
    color: var(--paper-muted);
    font-size: 0.75rem;
  }

  .lesson-plan {
    padding: 0;
    list-style: none;
  }

  .lesson-plan li {
    display: grid;
    grid-template-columns: 62px 1fr;
    gap: 0.7rem;
    padding: 0.65rem 0;
    border-bottom: 1px solid var(--line);
    color: var(--paper-muted);
    font-size: 0.78rem;
  }

  .lesson-plan span {
    color: var(--lime);
    font-family: var(--mono);
    font-size: 0.62rem;
  }

  .check-list {
    display: grid;
    gap: 0.7rem;
    padding: 0;
    list-style: none;
  }

  .check-list li {
    position: relative;
    padding-left: 1.6rem;
    color: var(--paper-muted);
    font-size: 0.8rem;
  }

  .check-list li::before {
    position: absolute;
    top: 0.15rem;
    left: 0;
    display: grid;
    width: 16px;
    height: 16px;
    place-items: center;
    border: 1px solid var(--lime);
    content: "·";
    color: var(--lime);
  }

  .teacher-note {
    display: flex;
    gap: 0.7rem;
    margin-top: 1rem;
    padding: 0.9rem;
    border: 1px solid var(--line);
    color: var(--paper-muted);
    font-size: 0.76rem;
  }

  .teacher-note > span {
    color: var(--lime);
  }

  .role-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
  }

  .role-tags span {
    color: var(--paper);
  }

  .teacher-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin: 0 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--line);
  }

  .summary-hero {
    padding: 6.5rem 3rem 3.5rem;
    border-bottom: 1px solid var(--line);
  }

  .summary-hero h1 {
    max-width: 1050px;
    margin: 1rem 0 1.4rem;
    font-size: clamp(4rem, 8vw, 8rem);
  }

  .summary-hero > p:last-child {
    max-width: 700px;
    color: var(--paper-muted);
  }

  .summary-score {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 2rem;
    margin: 3rem;
    padding: 2rem;
    border: 1px solid var(--line-strong);
    background: #0a242d;
  }

  .summary-ring {
    width: 150px;
  }

  .summary-ring strong,
  .summary-ring span {
    display: block;
  }

  .summary-ring strong {
    font-family: var(--display);
    font-size: 2.5rem;
  }

  .summary-ring span {
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.62rem;
  }

  .summary-score-copy h2 {
    margin: 0.65rem 0 0.45rem;
    font-size: 2.4rem;
  }

  .summary-score-copy > p:last-child {
    color: var(--paper-muted);
    font-size: 0.8rem;
  }

  .dimension-section {
    margin: 5rem 3rem;
  }

  .dimension-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }

  .dimension-list article {
    padding: 1rem;
    border: 1px solid var(--line);
  }

  .dimension-list article > div {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.8rem;
  }

  .dimension-list article > div strong {
    font-size: 0.8rem;
  }

  .dimension-list article > div span {
    color: var(--lime);
    font-family: var(--mono);
    font-size: 0.63rem;
  }

  .dimension-list article > i {
    display: block;
    height: 6px;
    background: rgba(243, 240, 229, 0.1);
  }

  .dimension-list article > i b {
    display: block;
    height: 100%;
    background: var(--lime);
  }

  .dimension-list article > small {
    display: block;
    margin-top: 0.55rem;
    color: var(--paper-muted);
    font-size: 0.62rem;
  }

  .summary-insights {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin: 0 3rem 3rem;
  }

  .summary-insights article {
    min-height: 240px;
    padding: 1.3rem;
    border: 1px solid var(--line);
    background: #0a242d;
  }

  .summary-insights h2 {
    margin: 2.2rem 0 0.7rem;
    font-size: 2.3rem;
  }

  .summary-insights article > p:last-child {
    color: var(--paper-muted);
    font-size: 0.8rem;
  }

  .summary-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin: 0 3rem;
  }

  .summary-disclaimer {
    margin: 1rem 3rem 0;
    padding: 1rem;
    border-left: 2px solid var(--lime);
    background: rgba(200, 255, 92, 0.035);
  }

  .summary-disclaimer strong {
    font-size: 0.8rem;
  }

  .summary-disclaimer p {
    max-width: 900px;
    margin-top: 0.3rem;
    color: var(--paper-muted);
    font-size: 0.74rem;
  }

  footer {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 2rem;
    padding: 2.2rem 3rem;
    border-top: 1px solid var(--line);
    background: #06171e;
  }

  .footer-brand p {
    margin-top: 0.3rem;
    color: var(--paper-muted);
    font-size: 0.68rem;
  }

  .footer-links {
    display: flex;
    gap: 1.2rem;
  }

  .footer-links button {
    color: var(--paper-muted);
    font-size: 0.68rem;
  }

  .footer-links button:hover {
    color: var(--lime);
  }

  .footer-meta {
    justify-self: end;
    color: var(--paper-muted);
    font-family: var(--mono);
    font-size: 0.55rem;
    text-align: right;
  }
}

@layer utilities {
  html.large-text {
    font-size: 19px;
  }

  body.large-text {
    font-size: 19px;
  }

  body.high-contrast {
    --paper-muted: #ecebdc;
    --line: rgba(255, 255, 255, 0.32);
    --line-strong: rgba(255, 255, 255, 0.68);
  }

  body.reduce-motion *,
  body.reduce-motion *::before,
  body.reduce-motion *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      scroll-behavior: auto !important;
      animation-duration: 0.001ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.001ms !important;
    }
  }

  @media (max-width: 1120px) {
    .topbar {
      grid-template-columns: 1fr auto;
    }

    .main-nav {
      display: none;
    }

    .hero {
      grid-template-columns: 1fr 0.78fr;
      gap: 2rem;
    }

    .hero-instrument {
      min-height: 500px;
    }

    .scope {
      width: min(300px, 78%);
    }

    .mission-preview {
      grid-template-columns: repeat(2, 1fr);
    }

    .trust-section {
      grid-template-columns: 1fr;
    }

    .progress-overview {
      grid-template-columns: 1fr auto;
    }

    .next-card {
      grid-column: 1 / -1;
    }

    .mission-card {
      grid-template-columns: minmax(120px, 0.65fr) minmax(0, 1.7fr) minmax(180px, 0.8fr);
    }

    .core-elements {
      grid-template-columns: repeat(3, 1fr);
    }

    .mission-stage {
      grid-template-columns: 270px minmax(0, 1fr);
    }

    .mission-sidebar {
      padding-inline: 0.75rem;
    }

    .task-step-list button {
      gap: 0.5rem;
      padding-inline: 0.48rem;
    }

    .task-step-list strong {
      font-size: 0.66rem;
    }
  }

  @media (max-width: 820px) {
    :root {
      --topbar-height: 66px;
    }

    .topbar {
      padding: 0 1rem;
    }

    .brand-station,
    .progress-chip-label {
      display: none;
    }

    .brand {
      grid-template-columns: auto auto;
    }

    .home-view {
      padding: 0 1rem;
    }

    .hero {
      grid-template-columns: 1fr;
      padding: 4rem 0 3rem;
    }

    .hero-copy h1 {
      font-size: clamp(3.5rem, 18vw, 6.2rem);
    }

    .hero-instrument {
      min-height: 530px;
    }

    .home-band {
      display: block;
      margin: 0 -1rem;
      padding: 1.3rem 1rem;
    }

    .home-band > p {
      margin-bottom: 0.9rem;
    }

    .method-line {
      flex-wrap: wrap;
      justify-content: flex-start;
      gap: 0.65rem 1rem;
    }

    .method-line i {
      width: 18px;
    }

    .home-section {
      padding: 5rem 0;
    }

    .section-heading,
    .page-intro {
      grid-template-columns: 1fr;
      gap: 1.3rem;
    }

    .section-heading {
      margin-bottom: 2rem;
    }

    .section-heading h2 {
      font-size: 2.6rem;
    }

    .page-intro {
      padding: 4rem 1rem 2.5rem;
    }

    .page-intro h1 {
      font-size: clamp(3.3rem, 15vw, 5.5rem);
    }

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

    .preview-card {
      min-height: 230px;
    }

    .trust-section {
      margin: 0 -1rem;
      padding: 4rem 1rem;
    }

    .trust-points {
      grid-template-columns: 1fr;
    }

    .trust-points article {
      min-height: 180px;
    }

    .trust-number {
      margin-bottom: 1.2rem;
    }

    .progress-overview {
      margin: 1rem;
      padding: 1rem;
    }

    .mission-map {
      padding: 1rem 1rem 3rem;
    }

    .map-row {
      grid-template-columns: 48px minmax(0, 1fr);
    }

    .map-rail span {
      width: 34px;
      height: 34px;
    }

    .map-rail i {
      top: 50px;
    }

    .mission-card {
      grid-template-columns: 62px minmax(0, 1fr);
      gap: 0.85rem;
      min-height: auto;
      padding: 1rem;
    }

    .mission-card-head {
      grid-row: 1 / span 2;
      align-items: flex-start;
      justify-content: flex-start;
      gap: 0.75rem;
    }

    .mission-card .mission-symbol {
      width: 50px;
      height: 50px;
      font-size: 0.75rem;
    }

    .mission-card-copy {
      min-height: 78px;
      justify-content: center;
    }

    .mission-card-copy h2 {
      font-size: 2rem;
    }

    .mission-tags {
      grid-column: 2;
      align-items: flex-start;
      align-self: start;
    }

    .mission-card-foot {
      grid-column: 1 / -1;
      gap: 0.8rem;
    }

    .map-actions {
      align-items: flex-start;
      flex-direction: column;
      margin: 0 1rem 4rem 4rem;
    }

    .mission-top {
      position: relative;
      top: auto;
      z-index: 1;
      grid-template-columns: 1fr auto;
      min-height: 72px;
      padding: 0 1rem;
      backdrop-filter: none;
    }

    .mission-identity {
      justify-self: end;
    }

    .mission-task-count {
      display: none;
    }

    .mission-stage {
      display: block;
    }

    .mission-sidebar {
      position: sticky;
      top: var(--topbar-height);
      z-index: 55;
      display: block;
      height: auto;
      max-height: none;
      padding: 0.55rem 1rem 0.65rem;
      overflow: hidden;
      border-right: 0;
      border-bottom: 1px solid var(--line);
      background: rgba(8, 31, 39, 0.97);
      box-shadow: 0 14px 30px rgba(0, 8, 12, 0.2);
      backdrop-filter: blur(16px);
    }

    .mission-sidebar > .eyebrow,
    .mission-sidebar > .sidebar-tool {
      display: none;
    }

    .sidebar-progress {
      margin-bottom: 0.45rem;
    }

    .chapter-tabs {
      gap: 0.4rem;
      margin: 0 0 0.45rem;
    }

    .chapter-tab {
      min-height: 44px;
      padding: 0.42rem 0.65rem;
      text-align: center;
    }

    .chapter-tab::before {
      top: auto;
      right: 18%;
      bottom: -1px;
      left: 18%;
      width: auto;
      height: 2px;
      transform: scaleX(0.3);
    }

    .chapter-tab.is-active::before {
      transform: scaleX(1);
    }

    .mission-sidebar-stats {
      display: flex;
      gap: 0.4rem;
      margin: 0 0 0.45rem;
      border: 0;
      background: none;
    }

    .mission-sidebar-stat {
      min-height: 31px;
      flex: 1 1 0;
      grid-template-columns: minmax(0, 1fr) auto;
      align-items: center;
      gap: 0.45rem;
      padding: 0.3rem 0.5rem;
      border: 1px solid var(--line);
      background: rgba(243, 240, 229, 0.02);
    }

    .task-step-list {
      display: flex;
      width: 100%;
      flex-direction: row;
      gap: 0.38rem;
      margin: 0;
      padding: 0 0 0.18rem;
      overflow-x: auto;
      overflow-y: hidden;
      scroll-padding-inline: 0.1rem;
      scroll-snap-type: x proximity;
      scrollbar-gutter: auto;
      scrollbar-width: none;
      -webkit-overflow-scrolling: touch;
    }

    .task-step-list::-webkit-scrollbar {
      display: none;
    }

    .task-step-list.task-stage-group {
      display: flex;
    }

    .stage-heading {
      display: none;
    }

    .task-step-list button {
      display: flex;
      width: 48px;
      min-width: 48px;
      flex: 0 0 48px;
      min-height: 48px;
      justify-content: center;
      padding: 0.35rem;
      border-left-width: 1px;
      scroll-snap-align: start;
    }

    .task-step-list button > div {
      display: none;
    }

    .task-step-list button.is-active {
      border-left-color: rgba(var(--accent-rgb), 0.58);
      box-shadow: inset 0 -3px 0 var(--accent);
    }

    .task-column {
      padding: 1rem;
    }

    .task-card {
      padding: 1.15rem;
    }

    .chapter-kicker {
      margin-bottom: 0.55rem;
      font-size: 0.57rem;
    }

    .task-card > h1 {
      font-size: 2.6rem;
    }

    .feedback-panel {
      grid-template-columns: 1fr;
    }

    .feedback-icon {
      width: 38px;
      height: 38px;
    }

    .curriculum-disclaimer,
    .core-elements,
    .curriculum-toolbar,
    .curriculum-list,
    .teacher-grid,
    .teacher-actions,
    .summary-score,
    .dimension-section,
    .summary-insights,
    .summary-actions,
    .summary-disclaimer {
      margin-right: 1rem;
      margin-left: 1rem;
    }

    .core-elements {
      grid-template-columns: repeat(2, 1fr);
    }

    .curriculum-toolbar {
      align-items: flex-start;
      flex-direction: column;
    }

    .teacher-hero {
      grid-template-columns: 1fr;
      padding: 4rem 1rem 2.5rem;
    }

    .teacher-hero h1 {
      font-size: clamp(3.3rem, 15vw, 5.6rem);
    }

    .teacher-badge {
      width: 140px;
    }

    .teacher-grid,
    .dimension-list,
    .summary-insights {
      grid-template-columns: 1fr;
    }

    .use-cases {
      grid-template-columns: 1fr;
    }

    .summary-hero {
      padding: 4rem 1rem 2.5rem;
    }

    footer {
      grid-template-columns: 1fr;
      padding: 2rem 1rem;
    }

    .footer-meta {
      justify-self: start;
      text-align: left;
    }
  }

  @media (max-width: 540px) {
    .brand-type {
      font-size: 0.9rem;
    }

    .top-actions {
      gap: 0.35rem;
    }

    .progress-chip {
      padding-inline: 0.45rem;
    }

    .hero-copy h1 {
      font-size: clamp(3.2rem, 20vw, 5rem);
    }

    .hero-actions,
    .teacher-actions,
    .summary-actions,
    .completion-actions,
    .dialog-actions {
      align-items: stretch;
      flex-direction: column;
    }

    .hero-actions button,
    .teacher-actions button,
    .summary-actions button,
    .completion-actions button {
      width: 100%;
    }

    .hero-instrument {
      min-height: 480px;
    }

    .scope {
      width: 290px;
      max-width: 84%;
    }

    .signal-readout {
      grid-template-columns: 1fr;
    }

    .signal-readout div {
      grid-template-columns: 1fr 1fr;
      border-right: 0;
      border-bottom: 1px solid var(--line);
    }

    .signal-readout div:last-child {
      border-bottom: 0;
    }

    .chapter-explainer {
      grid-template-columns: 1fr;
    }

    .chapter-explainer > p {
      min-height: 36px;
      padding: 0.55rem 0.75rem;
      border-right: 0;
      border-bottom: 1px solid var(--line);
    }

    .chapter-explainer li {
      display: flex;
      min-height: 54px;
      align-items: flex-start;
      flex-direction: column;
      justify-content: center;
      gap: 0.15rem;
      padding: 0.55rem 0.7rem;
    }

    .chapter-explainer strong {
      font-size: 0.9rem;
      line-height: 1.1;
    }

    .mission-preview {
      grid-template-columns: 1fr;
    }

    .preview-card {
      grid-template-columns: 56px minmax(0, 1fr);
      min-height: 170px;
      gap: 0.35rem 0.8rem;
      padding: 1rem;
    }

    .preview-number {
      grid-column: 1 / -1;
    }

    .preview-symbol {
      grid-row: 2 / span 2;
      width: 52px;
      height: 52px;
      margin: 0;
    }

    .preview-card strong {
      align-self: end;
      font-size: 1.3rem;
    }

    .preview-card small {
      align-self: start;
    }

    .progress-overview {
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 0.85rem;
    }

    .overview-meter {
      justify-self: end;
    }

    .overview-meter > span {
      width: 84px;
    }

    .overview-meter b {
      font-size: 1.15rem;
    }

    .overview-copy > strong {
      font-size: 1.3rem;
    }

    .overview-copy > p:last-child {
      font-size: 0.68rem;
    }

    .next-card {
      grid-column: 1 / -1;
      min-height: 96px;
    }

    .map-row {
      grid-template-columns: 38px minmax(0, 1fr);
    }

    .map-rail {
      justify-content: flex-start;
    }

    .mission-card {
      grid-template-columns: 52px minmax(0, 1fr);
      gap: 0.7rem;
      padding: 0.85rem;
    }

    .mission-card .mission-symbol {
      width: 44px;
      height: 44px;
    }

    .mission-card-head {
      gap: 0.55rem;
    }

    .mission-status {
      min-height: 25px;
      padding: 0.28rem 0.35rem;
      font-size: 0.51rem;
    }

    .mission-card-copy {
      min-height: 66px;
    }

    .mission-card-copy p {
      margin-bottom: 0.35rem;
      font-size: 0.56rem;
    }

    .mission-card-copy h2 {
      font-size: 1.65rem;
    }

    .mission-tags {
      grid-column: 1 / -1;
    }

    .mission-tags span {
      font-size: 0.58rem;
    }

    .mission-tags span:nth-child(n + 3) {
      display: none;
    }

    .mission-card-foot {
      align-items: stretch;
      flex-direction: column;
      gap: 0.55rem;
      padding-top: 0.75rem;
    }

    .task-dots {
      width: 100%;
    }

    .mission-card-foot > span {
      align-self: flex-end;
    }

    .map-actions {
      margin-left: 3.4rem;
    }

    .mission-identity .mission-symbol {
      display: none;
    }

    .mission-identity strong {
      max-width: 128px;
      overflow: hidden;
      font-size: 0.92rem;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .mission-sidebar {
      padding-inline: 0.7rem;
    }

    .mission-sidebar-stats {
      display: none;
    }

    .chapter-tab {
      padding-inline: 0.45rem;
    }

    .task-step-list button {
      width: 46px;
      min-width: 46px;
      flex-basis: 46px;
      min-height: 46px;
    }

    .task-meta {
      gap: 0.25rem;
    }

    .task-card > h1 {
      font-size: 2.25rem;
    }

    .variable-groups,
    .particle-visual {
      grid-template-columns: 1fr;
    }

    .variable-groups > div {
      grid-template-columns: 1fr;
    }

    .signal-flow {
      display: grid;
      grid-template-columns: 1fr auto 1fr;
    }

    .signal-flow span {
      min-width: 0;
    }

    .signal-flow span:nth-of-type(3),
    .signal-flow span:nth-of-type(4),
    .signal-flow i:nth-of-type(2),
    .signal-flow i:nth-of-type(3) {
      display: none;
    }

    .spectrum-labels {
      grid-template-columns: repeat(2, 1fr);
    }

    .spectrum-labels span:nth-child(2) {
      border-right: 1px solid var(--line);
    }

    .foodchain-visual {
      gap: 0.35rem;
    }

    .foodchain-visual > div {
      grid-template-rows: auto 110px auto;
    }

    .foodchain-visual i {
      width: 25px;
    }

    .foodchain-visual em {
      display: none;
    }

    .bar-visual > div,
    .generation-visual > div {
      grid-template-columns: 100px 1fr 40px;
      gap: 0.45rem;
    }

    .correlation-visual {
      grid-template-columns: 1fr;
    }

    .correlation-visual > p {
      max-width: none;
    }

    .answer-option {
      grid-template-columns: 34px 1fr;
      padding-inline: 0.6rem;
    }

    .option-marker {
      width: 30px;
      height: 30px;
    }

    .task-actions,
    .feedback-actions {
      align-items: stretch;
      flex-direction: column-reverse;
    }

    .task-actions > *,
    .feedback-actions > * {
      width: 100%;
    }

    .sequence-slots > div {
      grid-template-columns: 1fr;
    }

    .completion-stats {
      grid-template-columns: 1fr;
    }

    .core-elements {
      grid-template-columns: 1fr;
    }

    .goal-card {
      grid-template-columns: 44px 1fr 28px;
    }

    .goal-copy {
      padding: 0.9rem;
    }

    .goal-title-row {
      display: block;
    }

    .goal-title-row span {
      display: inline-block;
      margin-top: 0.45rem;
    }

    .summary-score {
      grid-template-columns: 1fr;
      text-align: center;
    }

    .summary-ring {
      justify-self: center;
    }

    .glossary-list article {
      grid-template-columns: 1fr;
      gap: 0.4rem;
    }
  }

  @media (hover: none) {
    .mission-card:hover {
      transform: none;
    }
  }

  @media print {
    :root {
      color-scheme: light;
    }

    body {
      background: #fff !important;
      color: #111 !important;
    }

    body::before,
    body::after,
    .topbar,
    footer,
    .settings-panel,
    .panel-scrim,
    .teacher-actions,
    .summary-actions,
    .toast,
    .view:not(.is-active) {
      display: none !important;
    }

    .view.is-active {
      display: block !important;
    }

    .teacher-view,
    .summary-view {
      padding: 0 !important;
    }

    .mission-top,
    .mission-sidebar,
    .task-save-note {
      display: none !important;
    }

    .mission-stage {
      display: block !important;
      min-height: 0 !important;
    }

    .task-column {
      width: 100% !important;
      padding: 0 !important;
    }

    .mission-map {
      padding: 0 !important;
    }

    .progress-overview,
    .map-actions {
      margin-right: 0 !important;
      margin-left: 0 !important;
    }

    .progress-overview,
    .mission-card,
    .task-card,
    .chapter-explainer {
      border-color: #aaa !important;
      background: #fff !important;
      color: #111 !important;
      box-shadow: none !important;
    }

    .progress-overview::before,
    .mission-card::after,
    .task-card::before {
      display: none !important;
    }

    .map-row,
    .mission-card,
    .task-card,
    .chapter-explainer {
      break-inside: avoid;
    }

    .map-rail span,
    .mission-status,
    .chapter-explainer > p,
    .chapter-explainer span,
    .chapter-kicker,
    .task-mode-badge {
      border-color: #224e2a !important;
      color: #224e2a !important;
    }

    .mission-status.is-complete {
      background: #224e2a !important;
      color: #fff !important;
    }

    .mission-card-copy h2,
    .chapter-explainer strong,
    .task-card h1 {
      color: #111 !important;
    }

    .mission-card-copy p,
    .mission-tags span,
    .mission-card-foot > span,
    .overview-copy > p:last-child,
    .task-context {
      color: #333 !important;
    }

    .teacher-hero,
    .summary-hero {
      padding: 1cm 0 !important;
      border-color: #bbb !important;
    }

    .teacher-hero h1,
    .summary-hero h1 {
      font-size: 42pt !important;
    }

    .teacher-grid,
    .summary-score,
    .dimension-section,
    .summary-insights,
    .summary-disclaimer {
      margin: 0 0 0.6cm !important;
    }

    .teacher-card,
    .summary-score,
    .dimension-list article,
    .summary-insights article,
    .summary-disclaimer {
      break-inside: avoid;
      border-color: #aaa !important;
      background: #fff !important;
      color: #111 !important;
    }

    .teacher-card p,
    .teacher-card li,
    .summary-view p,
    .summary-view small {
      color: #333 !important;
    }

    .teacher-badge,
    .card-index,
    .eyebrow,
    .summary-ring strong,
    .dimension-list article > div span {
      color: #224e2a !important;
      border-color: #224e2a !important;
    }
  }
}