:root {
  color-scheme: light;
  --bg: #f7f6f2;
  --paper: #fffdf8;
  --ink: #202124;
  --muted: #626760;
  --line: #ded9ce;
  --accent: #1f6f68;
  --accent-strong: #164e49;
  --accent-soft: #e5f1ef;
  --gold: #b9852a;
  --shadow: 0 18px 50px rgba(35, 38, 34, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(229, 241, 239, 0.72), rgba(247, 246, 242, 0) 360px),
    var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.68;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  padding: 72px 0 54px;
  border-bottom: 1px solid var(--line);
}

.site-header .container {
  display: grid;
  gap: 18px;
}

.eyebrow {
  margin: 0;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  color: #171917;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: 0;
}

h1 {
  max-width: 820px;
  font-size: clamp(2.6rem, 7vw, 5.5rem);
}

h2 {
  margin-top: 64px;
  padding-top: 10px;
  border-top: 2px solid var(--accent);
  font-size: clamp(1.9rem, 4vw, 3rem);
}

h3 {
  margin-top: 34px;
  font-size: clamp(1.22rem, 2.4vw, 1.55rem);
}

p {
  max-width: 820px;
  margin: 16px 0 0;
}

strong {
  font-weight: 750;
}

.lede {
  max-width: 760px;
  margin-top: 0;
  color: #3d423c;
  font-size: clamp(1.12rem, 2.2vw, 1.42rem);
  line-height: 1.52;
}

.label-card,
.tag,
.live-tag {
  width: fit-content;
  max-width: 100%;
  border: 1px solid rgba(31, 111, 104, 0.24);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.label-card,
.generator-link-card {
  display: grid;
  align-content: center;
  gap: 2px;
  margin-top: 16px;
  min-width: min(100%, 330px);
  min-height: 86px;
  padding: 16px 18px;
}

.label-card span {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.label-card strong {
  color: var(--accent-strong);
  font-size: clamp(1.15rem, 2.8vw, 1.75rem);
  line-height: 1.2;
}

main {
  padding-bottom: 80px;
}

section {
  margin-top: 8px;
}

.dimensions-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.9fr) minmax(260px, 1.1fr);
  gap: 22px;
  margin-top: 28px;
  align-items: start;
}

.dimensions-grid h3 {
  margin-top: 0;
}

.rule-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.rule-grid article,
.example-list article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 248, 0.72);
  box-shadow: 0 10px 28px rgba(35, 38, 34, 0.05);
}

.rule-grid article {
  padding: 22px;
}

.rule-grid h3,
.example-list h3 {
  margin-top: 0;
}

.tag {
  display: block;
  margin-top: 16px;
  padding: 10px 13px;
  color: var(--accent-strong);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.96rem;
  font-weight: 700;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

blockquote {
  max-width: 850px;
  margin: 22px 0 0;
  padding: 18px 22px;
  border-left: 4px solid var(--gold);
  border-radius: 0 8px 8px 0;
  background: rgba(255, 253, 248, 0.78);
  color: #383b36;
}

.quote-box {
  display: block;
  max-width: none;
  margin: 18px 0 0;
  padding: 18px 22px;
  border-left: 4px solid var(--gold);
  border-radius: 0 8px 8px 0;
  background: rgba(255, 253, 248, 0.78);
  color: #383b36;
}

.table-wrap {
  width: 100%;
  margin-top: 24px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  min-width: 780px;
  border-collapse: collapse;
  font-size: 0.94rem;
  line-height: 1.48;
}

.compact-table table {
  min-width: 0;
  font-size: 0.98rem;
}

.compact-table th,
.compact-table td {
  padding: 14px 16px;
}

.matrix-table table {
  min-width: 1180px;
  font-size: 0.89rem;
}

th,
td {
  padding: 15px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #e8f0ec;
  color: #183b37;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

tbody tr:nth-child(even) {
  background: rgba(229, 241, 239, 0.38);
}

tbody tr:hover {
  background: rgba(255, 246, 225, 0.72);
}

tr:last-child td {
  border-bottom: 0;
}

td:first-child,
th:first-child {
  white-space: nowrap;
}

.example-list {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

.example-list article {
  padding: 24px;
}

.example-list .tag {
  margin-top: 18px;
}

.declaration {
  margin-top: 70px;
  padding: 34px;
  border: 1px solid rgba(31, 111, 104, 0.26);
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(229, 241, 239, 0.82), rgba(255, 253, 248, 0.9));
  box-shadow: var(--shadow);
}

.declaration h2 {
  margin-top: 0;
}

.info-tiles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 28px;
}

.info-tile {
  padding: 26px;
  border: 1px solid rgba(31, 111, 104, 0.24);
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(229, 241, 239, 0.62), rgba(255, 253, 248, 0.96));
  box-shadow: var(--shadow);
}

.info-tile h2 {
  margin-top: 0;
}

.info-tile h3 {
  margin-top: 24px;
}

.info-tile blockquote {
  max-width: none;
}

.info-tile a {
  color: var(--accent-strong);
  font-weight: 760;
  text-underline-offset: 4px;
}

.bibtex-block {
  max-width: 100%;
  margin: 14px 0 0;
  padding: 16px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f0ece3;
  color: #252822;
  font-size: 0.86rem;
  line-height: 1.45;
}

.bibtex-block code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.header-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  color: var(--accent-strong);
  font-weight: 760;
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}

.generator-link-card {
  gap: 3px;
  max-width: 100%;
  border: 1px solid rgba(31, 111, 104, 0.3);
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent-strong), var(--accent));
  color: #fffdf8;
  box-shadow: var(--shadow);
  text-decoration: none;
  transition: box-shadow 160ms ease, transform 160ms ease;
}

.instructor-link-card {
  background: linear-gradient(135deg, #6d5423, var(--gold));
}

.generator-link-card:hover,
.generator-link-card:focus-visible {
  box-shadow: 0 20px 46px rgba(35, 38, 34, 0.15);
  outline: 0;
  transform: translateY(-2px);
}

.generator-link-card span {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.84;
}

.generator-link-card strong {
  font-size: clamp(1.12rem, 2.5vw, 1.55rem);
  line-height: 1.18;
}

.generator-main {
  padding-top: 42px;
}

.generator-page h2 {
  margin-top: 0;
}

.generator-header {
  padding-bottom: 44px;
}

.generator-shell,
.result-panel,
.reference-grid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 248, 0.82);
  box-shadow: var(--shadow);
}

.generator-shell,
.result-panel {
  padding: clamp(20px, 4vw, 34px);
}

.generator-topline {
  display: flex;
  justify-content: space-between;
  gap: 22px;
  align-items: flex-start;
}

.live-tag {
  margin: 0;
  padding: 10px 12px;
  color: var(--accent-strong);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.93rem;
  font-weight: 760;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.progress-track {
  height: 9px;
  margin-top: 24px;
  overflow: hidden;
  border-radius: 999px;
  background: #e7e1d6;
}

.progress-track span {
  display: block;
  width: 20%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--gold));
  transition: width 220ms ease;
}

.stage-panel {
  margin-top: 26px;
  transition: opacity 180ms ease, transform 180ms ease;
}

.stage-panel.is-leaving {
  opacity: 0;
  transform: translateY(10px);
}

.stage-panel.is-entering {
  opacity: 0.15;
  transform: translateY(-8px);
}

.stage-intro {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.stage-intro h3 {
  margin-top: 0;
  font-size: clamp(1.55rem, 3vw, 2.25rem);
}

.stage-intro p:not(.stage-code) {
  max-width: 900px;
  margin-top: 8px;
  color: #3d423c;
}

.stage-code {
  display: grid;
  place-items: center;
  width: 72px;
  height: 72px;
  margin: 0;
  border: 2px solid rgba(31, 111, 104, 0.28);
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 1.45rem;
  font-weight: 850;
}

.level-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 26px;
}

.level-tile {
  display: grid;
  gap: 8px;
  min-height: 270px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fffdf8;
  color: var(--ink);
  font: inherit;
  line-height: 1.42;
  text-align: left;
  cursor: pointer;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease, background 160ms ease;
}

.level-tile:hover,
.level-tile:focus-visible {
  border-color: rgba(31, 111, 104, 0.68);
  box-shadow: 0 14px 28px rgba(35, 38, 34, 0.1);
  outline: 0;
  transform: translateY(-2px);
}

.level-tile[aria-checked="true"] {
  border-color: var(--accent);
  background: linear-gradient(180deg, #eef7f4, #fffdf8);
  box-shadow: 0 0 0 3px rgba(31, 111, 104, 0.12), 0 14px 28px rgba(35, 38, 34, 0.08);
}

.level-number {
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.level-tile strong {
  color: #171917;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.35rem;
  line-height: 1.1;
}

.level-tile span:last-of-type {
  color: var(--accent-strong);
  font-weight: 760;
}

.level-tile em {
  color: #4d524b;
  font-style: normal;
  font-size: 0.95rem;
}

.generator-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 24px;
}

.control-button,
.copy-button {
  min-height: 44px;
  border: 1px solid rgba(31, 111, 104, 0.34);
  border-radius: 8px;
  font: inherit;
  font-weight: 780;
  cursor: pointer;
}

.control-button {
  padding: 10px 15px;
}

.control-button.primary {
  background: var(--accent);
  color: #fffdf8;
}

.control-button.secondary {
  background: var(--paper);
  color: var(--accent-strong);
}

.control-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.result-panel {
  display: grid;
  gap: 22px;
}

.result-panel[hidden],
.generator-shell[hidden],
.validation-panel[hidden] {
  display: none;
}

.copy-card {
  display: flex;
  gap: 14px;
  justify-content: space-between;
  align-items: center;
  padding: 18px;
  border: 1px solid rgba(31, 111, 104, 0.24);
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(229, 241, 239, 0.78), rgba(255, 253, 248, 0.96));
}

.link-copy-card {
  align-items: flex-start;
}

.link-label {
  margin: 0 0 7px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.generated-label {
  max-width: none;
  margin: 0;
  color: var(--accent-strong);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: clamp(1.08rem, 2.4vw, 1.45rem);
  font-weight: 850;
  overflow-wrap: anywhere;
}

.link-output {
  font-size: clamp(0.86rem, 1.9vw, 1rem);
  line-height: 1.45;
}

.copy-button {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  flex: 0 0 auto;
  padding: 9px 12px;
  background: var(--accent-strong);
  color: #fffdf8;
}

.copy-button svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.copy-button.is-copied {
  background: #2d6b32;
}

.validation-panel {
  display: grid;
  gap: 20px;
  margin-top: 24px;
  padding: clamp(20px, 4vw, 34px);
  border: 1px solid rgba(31, 111, 104, 0.34);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(229, 241, 239, 0.52), rgba(255, 253, 248, 0.98)),
    var(--paper);
  box-shadow: 0 18px 50px rgba(35, 38, 34, 0.11);
}

.validation-panel h2 {
  margin-top: 0;
}

.validation-panel p {
  margin-top: 8px;
}

.validation-table {
  margin-top: 0;
  border-color: rgba(31, 111, 104, 0.22);
  box-shadow: 0 10px 28px rgba(35, 38, 34, 0.06);
}

.validation-table table {
  min-width: 720px;
  table-layout: fixed;
}

.validation-table th,
.validation-table td {
  padding: 13px 14px;
}

.validation-table th:first-child,
.validation-table td:first-child {
  width: 28%;
}

.validation-table th:nth-child(2),
.validation-table td:nth-child(2),
.validation-table th:nth-child(3),
.validation-table td:nth-child(3) {
  width: 25%;
  text-align: center;
}

.validation-table th:last-child,
.validation-table td:last-child {
  width: 22%;
  text-align: center;
}

.validation-table tbody tr:nth-child(even),
.validation-table tbody tr:hover {
  background: transparent;
}

.validation-table td:first-child span {
  color: var(--muted);
}

.validation-table .validation-ok-row,
.validation-table .validation-ok-row td {
  background: #f3faf5;
}

.validation-table .validation-issue-row,
.validation-table .validation-issue-row td {
  background: #fbefed;
}

.level-badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  box-shadow: none;
  font-size: 0.78rem;
  font-weight: 850;
  line-height: 1.15;
  white-space: nowrap;
}

.level-badge-0 {
  border-color: #aaa396;
  background: #e9e3d7;
  color: #4f4a40;
}

.level-badge-1 {
  border-color: #78aa84;
  background: #d8eddd;
  color: #1f552b;
}

.level-badge-2 {
  border-color: #78aeb8;
  background: #d5edf1;
  color: #174f59;
}

.level-badge-3 {
  border-color: #c99a57;
  background: #f5e2c5;
  color: #684612;
}

.validation-table td .permitted-badge {
  box-shadow: inset 0 0 0 1px rgba(45, 107, 50, 0.08);
}

.validation-table td .disclosed-ok-badge {
  box-shadow: inset 0 0 0 1px rgba(45, 107, 50, 0.1);
}

.validation-table td .disclosed-issue-badge {
  border-color: #d7aaa4;
  background: #f4dfdc;
  color: #8a4138;
  box-shadow: inset 0 0 0 1px rgba(154, 75, 67, 0.1);
}

.validation-table td .validation-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  padding: 0;
  border-radius: 999px;
  border: 1px solid transparent;
  box-shadow: none;
  font-size: 1.05rem;
  font-weight: 900;
  line-height: 1;
}

.validation-table td .validation-mark.is-ok {
  border-color: #91b99b;
  background: #dfeee3;
  color: #245b31;
}

.validation-table td .validation-mark.is-issue {
  border-color: #d7aaa4;
  background: #f4dfdc;
  color: #8a4138;
}

.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.summary-list {
  display: grid;
  gap: 12px;
}

.summary-list[hidden] {
  display: none;
}

.summary-disclosure {
  display: grid;
  gap: 14px;
}

.summary-disclosure:not(.is-open) .summary-list {
  display: none !important;
}

.summary-disclosure.is-open .summary-list {
  display: grid;
}

.summary-toggle {
  display: grid;
  grid-template-columns: minmax(24px, 88px) auto auto minmax(24px, 88px);
  gap: 8px;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--accent-strong);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
}

.summary-toggle::before,
.summary-toggle::after {
  content: "";
  height: 1px;
  background: var(--line);
}

.summary-toggle::before {
  grid-column: 1;
}

.summary-toggle::after {
  grid-column: 4;
}

.summary-toggle-icon {
  grid-column: 2;
}

.summary-toggle span:last-child {
  grid-column: 3;
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  white-space: nowrap;
}

.summary-toggle-icon {
  display: inline-grid;
  place-items: center;
  width: 24px;
  height: 24px;
  margin-right: -4px;
  border: 1px solid rgba(31, 111, 104, 0.34);
  border-radius: 999px;
  background: var(--paper);
  color: var(--accent-strong);
  font-size: 1rem;
  line-height: 1;
}

.summary-toggle:hover .summary-toggle-icon,
.summary-toggle:focus-visible .summary-toggle-icon {
  background: var(--accent-soft);
}

.summary-toggle:focus-visible {
  outline: 2px solid rgba(31, 111, 104, 0.38);
  outline-offset: 4px;
}

.summary-item {
  display: grid;
  grid-template-columns: minmax(180px, 0.35fr) minmax(0, 1fr);
  gap: 16px;
  padding: 15px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 248, 0.74);
}

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

.summary-item span {
  margin-top: 4px;
  color: var(--accent-strong);
  font-weight: 760;
}

.summary-item p {
  max-width: none;
  margin: 0;
  color: #464b44;
}

.reference-section {
  margin-top: 44px;
}

.reference-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 22px;
}

.reference-grid article {
  padding: 22px;
}

.reference-grid h3 {
  margin-top: 0;
}

.plain-list {
  display: grid;
  gap: 10px;
  margin: 14px 0 0;
  padding-left: 20px;
}

.plain-list li {
  padding-left: 3px;
}

.plain-list .level-badge {
  margin-right: 7px;
  vertical-align: middle;
}

.expectation-overview {
  display: flex;
  justify-content: space-between;
  gap: 22px;
  align-items: flex-start;
  padding: clamp(20px, 4vw, 34px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 248, 0.82);
  box-shadow: var(--shadow);
}

.expectation-overview h2 {
  margin-top: 0;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.legend span,
.permission-label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.legend i {
  width: 14px;
  height: 14px;
  border-radius: 4px;
}

.legend-allowed {
  background: #dfeee3;
  border: 1px solid #95b99d;
}

.legend-not-allowed {
  background: #f4dfdc;
  border: 1px solid #d7aaa4;
}

.expectation-table tbody tr:nth-child(even),
.expectation-table tbody tr:hover {
  background: transparent;
}

.expectation-table table {
  table-layout: fixed;
  min-width: 1040px;
}

.expectation-table th:first-child,
.expectation-table td:first-child {
  width: 18%;
  white-space: normal;
}

.expectation-table th:not(:first-child),
.expectation-table td:not(:first-child) {
  width: 20.5%;
}

.expectation-table td {
  border-left: 1px solid var(--line);
  font-size: 0.86rem;
  line-height: 1.4;
}

.expectation-table td:first-child {
  border-left: 0;
  background: rgba(255, 253, 248, 0.96);
}

.expectation-table td:first-child span {
  display: inline-block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.9rem;
  white-space: normal;
}

.expectation-table td.allowed-cell {
  background: #edf6ef;
}

.expectation-table td.not-allowed-cell {
  background: #f8e8e5;
}

.expectation-table td.allowed-cell .permission-label {
  color: #245b31;
}

.expectation-table td.not-allowed-cell .permission-label {
  color: #8a4138;
}

.expectation-table td p {
  max-width: none;
  margin-top: 9px;
}

@media (max-width: 820px) {
  body {
    font-size: 16px;
  }

  .container {
    width: min(100% - 28px, 1120px);
  }

  .site-header {
    padding: 48px 0 38px;
  }

  h2 {
    margin-top: 46px;
  }

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

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

  table {
    font-size: 0.88rem;
  }

  th,
  td {
    padding: 13px 14px;
  }

  .declaration {
    padding: 24px 18px;
  }

  .generator-topline,
  .copy-card,
  .summary-item,
  .expectation-overview {
    display: grid;
  }

  .legend {
    justify-content: flex-start;
  }

  .stage-intro {
    grid-template-columns: 1fr;
  }

  .level-grid,
  .reference-grid {
    grid-template-columns: 1fr;
  }

  .level-tile {
    min-height: 0;
  }

  .generator-controls {
    justify-content: stretch;
  }

  .control-button {
    flex: 1 1 140px;
  }
}