:root {
  --graphite: #19181f;
  --graphite-soft: #26242d;
  --ivory: #f5f2ea;
  --paper: #fbf9f4;
  --muted: #686570;
  --line: #d8d3c8;
  --mint: #58d6b1;
  --mint-dark: #16785f;
  --lavender: #b9a7ff;
  --raspberry: #e86a92;
  --content-width: 780px;
  --font-sans: "Avenir Next", Avenir, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-serif: Iowan Old Style, "Palatino Linotype", Palatino, Georgia, serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--graphite);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.66;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--mint-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-thickness: 2px;
}

a:focus-visible,
summary:focus-visible,
.table-wrap:focus-visible {
  outline: 3px solid var(--raspberry);
  outline-offset: 4px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--ivory);
  color: var(--graphite);
  transform: translateY(-180%);
  transition: transform 160ms ease;
}

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

.hero {
  position: relative;
  overflow: hidden;
  background: var(--graphite);
  color: var(--ivory);
}

.hero::before {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(245, 242, 234, 0.085) 0.8px, transparent 0.8px);
  background-size: 18px 18px;
  content: "";
  opacity: 0.38;
}

.hero-orbit {
  position: absolute;
  border: 1px solid rgba(185, 167, 255, 0.16);
  border-radius: 50%;
  pointer-events: none;
}

.hero-orbit-one {
  top: -340px;
  right: -220px;
  width: 780px;
  height: 780px;
}

.hero-orbit-two {
  right: -80px;
  bottom: -330px;
  width: 620px;
  height: 620px;
  border-color: rgba(88, 214, 177, 0.14);
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.72fr);
  gap: clamp(40px, 7vw, 108px);
  align-items: center;
  width: min(1180px, calc(100% - 56px));
  min-height: 610px;
  margin: 0 auto;
  padding: 92px 0 76px;
}

.eyebrow {
  margin: 0 0 30px;
  color: var(--mint);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(3.3rem, 7vw, 6.7rem);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 0.88;
}

h1 span {
  display: block;
  max-width: 650px;
  margin-top: 24px;
  color: var(--lavender);
  font-family: var(--font-sans);
  font-size: clamp(1.08rem, 2.1vw, 1.55rem);
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.25;
}

.hero-summary {
  max-width: 650px;
  margin: 30px 0 0;
  color: rgba(245, 242, 234, 0.78);
  font-size: clamp(1.02rem, 1.7vw, 1.2rem);
  line-height: 1.62;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid rgba(245, 242, 234, 0.28);
  border-radius: 999px;
  color: var(--ivory);
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease;
}

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

.button-primary {
  border-color: var(--mint);
  background: var(--mint);
  color: var(--graphite);
}

.button-primary:hover {
  background: #71e3c2;
}

.text-link {
  margin-left: 4px;
  padding: 10px 8px;
  color: var(--ivory);
  font-size: 0.88rem;
  font-weight: 700;
}

.hero-visual {
  position: relative;
  width: 100%;
  max-width: 500px;
  margin-left: auto;
  opacity: 0.96;
}

.hero-visual::before {
  position: absolute;
  inset: 12% 14%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(88, 214, 177, 0.15), transparent 66%);
  filter: blur(14px);
  content: "";
}

.hero-visual svg {
  position: relative;
  display: block;
  width: 100%;
  height: auto;
}

.wave {
  fill: none;
  stroke-width: 4;
  stroke-linecap: round;
}

.wave-one {
  stroke: var(--mint);
}

.wave-two {
  stroke: var(--lavender);
}

.node {
  stroke: var(--graphite);
  stroke-width: 4;
}

.node-a,
.node-c {
  fill: var(--mint);
}

.node-b {
  fill: var(--lavender);
}

.node-d {
  fill: var(--raspberry);
}

.first-meeting-banner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, calc(100% - 56px));
  margin: 0 auto;
  padding: 18px 22px;
  border: 1px solid rgba(88, 214, 177, 0.38);
  border-radius: 14px;
  background: rgba(88, 214, 177, 0.08);
}

.first-meeting-banner div {
  display: flex;
  align-items: baseline;
  gap: 14px;
  min-width: 0;
}

.first-meeting-banner span {
  color: var(--mint);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.first-meeting-banner strong {
  color: var(--ivory);
  font-size: 1rem;
  font-weight: 700;
}

.first-meeting-banner small {
  color: rgba(245, 242, 234, 0.7);
  font-size: 0.82rem;
  font-weight: 500;
}

.first-meeting-banner a {
  flex: 0 0 auto;
  color: var(--mint);
  font-size: 0.82rem;
  font-weight: 800;
}

.course-facts {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  width: min(1180px, calc(100% - 56px));
  margin: 0 auto;
  border-top: 1px solid rgba(245, 242, 234, 0.14);
}

.course-facts > div {
  min-height: 116px;
  padding: 28px 26px 30px 0;
  border-right: 1px solid rgba(245, 242, 234, 0.14);
}

.course-facts > div:not(:first-child) {
  padding-left: 26px;
}

.course-facts > div:last-child {
  border-right: 0;
}

.course-facts span {
  display: block;
  margin-bottom: 6px;
  color: rgba(245, 242, 234, 0.52);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.course-facts a,
.course-facts strong {
  color: var(--ivory);
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.45;
}

.course-facts .fact-detail {
  display: block;
  margin-top: 4px;
  color: rgba(245, 242, 234, 0.58);
  font-size: 0.76rem;
  font-weight: 500;
}

.course-facts .fact-note {
  display: block;
  margin-top: 4px;
  color: rgba(245, 242, 234, 0.58);
  font-size: 0.76rem;
  font-weight: 500;
}

.course-facts .fact-join {
  display: block;
  width: fit-content;
  margin-top: 6px;
  color: var(--mint);
  font-size: 0.76rem;
  font-weight: 700;
}

.start-here-band {
  border-bottom: 1px solid var(--line);
  background: #efebe2;
}

.start-here-inner {
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(420px, 1.18fr);
  gap: clamp(56px, 9vw, 132px);
  width: min(1180px, calc(100% - 56px));
  margin: 0 auto;
  padding: 94px 0 102px;
}

.checklist-kicker,
.self-check-kicker {
  margin: 0 0 18px;
  color: var(--mint-dark);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.checklist-intro h2,
.self-check-heading h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 5.5vw, 4.7rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.98;
}

.checklist-intro > p:not(.checklist-kicker):not(.storage-note) {
  max-width: 480px;
  margin: 24px 0 0;
  color: #4f4c54;
}

.progress-label {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  margin-top: 34px;
  color: var(--graphite);
  font-size: 0.78rem;
  font-weight: 800;
}

.progress-label button {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--mint-dark);
  font: inherit;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.checklist-progress {
  height: 5px;
  margin-top: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(25, 24, 31, 0.12);
}

.checklist-progress span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--mint-dark);
  transition: width 180ms ease;
}

.storage-note {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.72rem;
}

.start-here-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(25, 24, 31, 0.2);
  list-style: none;
}

.start-here-list li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  min-height: 82px;
  border-bottom: 1px solid rgba(25, 24, 31, 0.2);
}

.start-here-list input {
  width: 22px;
  height: 22px;
  margin: 0;
  accent-color: var(--mint-dark);
  cursor: pointer;
}

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

.start-here-list label {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  min-height: 82px;
  cursor: pointer;
}

.check-number {
  color: var(--raspberry);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.check-copy strong {
  display: block;
  color: var(--graphite);
  font-weight: 750;
}

.check-copy small {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.72rem;
}

.check-open {
  color: var(--mint-dark);
  font-size: 0.72rem;
  font-weight: 800;
}

.start-here-list .is-complete .check-copy strong {
  color: var(--muted);
  text-decoration: line-through;
  text-decoration-thickness: 1px;
}

.self-check-band {
  background: var(--graphite-soft);
  color: var(--ivory);
  scroll-margin-top: 24px;
}

.self-check-shell {
  width: min(980px, calc(100% - 56px));
  margin: 0 auto;
  padding: 100px 0 112px;
}

.self-check-kicker {
  color: var(--mint);
}

.self-check-heading h2 {
  color: var(--ivory);
}

.self-check-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 54px;
  align-items: end;
  margin-top: 42px;
  padding-top: 36px;
  border-top: 1px solid rgba(245, 242, 234, 0.18);
}

.self-check-intro p {
  max-width: 720px;
  margin: 0 0 16px;
  color: rgba(245, 242, 234, 0.76);
}

.self-check-intro p:last-child {
  margin-bottom: 0;
  color: var(--lavender);
  font-weight: 700;
}

.quiz-button {
  min-height: 48px;
  padding: 0 19px;
  border: 1px solid rgba(245, 242, 234, 0.32);
  border-radius: 999px;
  background: transparent;
  color: var(--ivory);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 800;
  cursor: pointer;
}

.quiz-button:hover:not(:disabled) {
  border-color: var(--mint);
}

.quiz-button:disabled {
  cursor: not-allowed;
  opacity: 0.38;
}

.quiz-button-primary {
  border-color: var(--mint);
  background: var(--mint);
  color: var(--graphite);
}

.quiz-layout {
  margin-top: 44px;
}

.quiz-progress {
  display: grid;
  grid-template-columns: auto minmax(120px, 1fr);
  gap: 22px;
  align-items: center;
  color: rgba(245, 242, 234, 0.62);
  font-size: 0.74rem;
  font-weight: 800;
}

.quiz-progress > div {
  height: 3px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(245, 242, 234, 0.14);
}

.quiz-progress i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--lavender);
  transition: width 180ms ease;
}

.quiz-question {
  min-width: 0;
  margin: 36px 0 0;
  padding: 0;
  border: 0;
}

.quiz-question legend {
  display: block;
  width: 100%;
  padding: 0;
}

.quiz-question legend small {
  display: block;
  margin-bottom: 10px;
  color: var(--raspberry);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.quiz-question legend span {
  display: block;
  max-width: 850px;
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3.8vw, 2.7rem);
  letter-spacing: -0.025em;
  line-height: 1.16;
}

.quiz-question pre {
  margin: 28px 0 10px;
  padding: 22px 24px;
  overflow-x: auto;
  border: 1px solid rgba(245, 242, 234, 0.16);
  border-radius: 10px;
  background: #19181f;
  color: var(--ivory);
  font-size: 0.88rem;
  line-height: 1.55;
}

.quiz-options {
  margin-top: 34px;
  border-top: 1px solid rgba(245, 242, 234, 0.18);
}

.quiz-options label {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  min-height: 62px;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(245, 242, 234, 0.18);
  color: rgba(245, 242, 234, 0.86);
  cursor: pointer;
  transition: background 140ms ease, color 140ms ease;
}

.quiz-options label:hover {
  background: rgba(245, 242, 234, 0.04);
}

.quiz-options input {
  width: 18px;
  height: 18px;
  margin: 0;
  accent-color: var(--lavender);
}

.quiz-options label.is-correct {
  background: rgba(88, 214, 177, 0.12);
  color: var(--mint);
}

.quiz-options label.is-incorrect {
  background: rgba(232, 106, 146, 0.12);
  color: #ff9fbd;
}

.quiz-feedback {
  margin: 28px 0 0;
  padding: 24px 26px;
  border-left: 3px solid var(--mint);
  background: rgba(245, 242, 234, 0.05);
}

.quiz-feedback.is-incorrect {
  border-left-color: var(--raspberry);
}

.quiz-feedback strong {
  color: var(--mint);
}

.quiz-feedback.is-incorrect strong {
  color: #ff9fbd;
}

.quiz-feedback p {
  margin: 8px 0 0;
  color: rgba(245, 242, 234, 0.74);
}

.quiz-feedback a,
.quiz-results a {
  color: var(--mint);
}

.quiz-controls {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 34px;
}

.quiz-results {
  margin-top: 46px;
  padding-top: 38px;
  border-top: 1px solid rgba(245, 242, 234, 0.18);
}

.results-summary {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 48px;
  align-items: center;
}

.results-score {
  margin: 0;
}

.results-score strong {
  display: block;
  color: var(--mint);
  font-family: var(--font-serif);
  font-size: 5rem;
  font-weight: 500;
  line-height: 0.9;
}

.results-score span {
  display: block;
  margin-top: 10px;
  color: rgba(245, 242, 234, 0.6);
  font-size: 0.78rem;
  font-weight: 800;
}

.results-summary h3 {
  margin: 0 0 8px;
  color: var(--ivory);
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 500;
}

.results-summary p {
  margin: 0;
  color: rgba(245, 242, 234, 0.7);
}

.results-topics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 50px;
  margin-top: 48px;
}

.results-topics article {
  padding: 24px 0 30px;
  border-top: 1px solid rgba(245, 242, 234, 0.18);
}

.results-topics span {
  color: var(--raspberry);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.results-topics h4 {
  margin: 7px 0 10px;
  color: var(--ivory);
  font-size: 1rem;
}

.results-topics p {
  margin: 0 0 10px;
  color: rgba(245, 242, 234, 0.7);
  font-size: 0.88rem;
}

.results-topics a {
  font-size: 0.8rem;
  font-weight: 800;
}

.retake-note {
  max-width: 700px;
  margin: 18px 0 24px;
  color: rgba(245, 242, 234, 0.66);
}

.site-shell {
  display: grid;
  grid-template-columns: 248px minmax(0, var(--content-width));
  gap: clamp(56px, 8vw, 124px);
  justify-content: center;
  width: min(1180px, calc(100% - 56px));
  margin: 0 auto;
  padding: 88px 0 128px;
}

.sidebar {
  position: sticky;
  top: 26px;
  align-self: start;
  max-height: calc(100vh - 52px);
  padding: 4px 24px 28px 0;
  overflow: auto;
  border-right: 1px solid var(--line);
  scrollbar-width: thin;
}

.sidebar-title {
  margin: 0 0 24px;
  font-family: var(--font-serif);
  font-size: 1.7rem;
  line-height: 1;
}

.nav-group {
  margin-bottom: 22px;
}

.nav-group p {
  margin: 0 0 7px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.nav-group a {
  display: block;
  padding: 4px 0;
  color: #45424a;
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.38;
  text-decoration: none;
}

.nav-group a:hover {
  color: var(--mint-dark);
}

.download-link {
  display: inline-block;
  margin-top: 6px;
  font-size: 0.82rem;
  font-weight: 700;
}

.mobile-nav {
  display: none;
}

.syllabus-content {
  min-width: 0;
}

.chapter-marker {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 42px;
  color: var(--mint-dark);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.chapter-marker::after {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--mint), transparent);
  content: "";
}

.syllabus-section {
  margin: 0 0 104px;
  scroll-margin-top: 24px;
}

.section-heading {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  margin-bottom: 34px;
}

.section-number {
  margin-top: 8px;
  color: var(--raspberry);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(2.15rem, 4.4vw, 3.6rem);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.02;
}

h3 {
  margin: 54px 0 18px;
  color: var(--graphite);
  font-size: 1.2rem;
  font-weight: 800;
  line-height: 1.3;
  scroll-margin-top: 24px;
}

.syllabus-section > h3 {
  margin-left: 76px;
}

.syllabus-section > p,
.syllabus-section > ul,
.syllabus-section > ol,
.syllabus-section > .table-wrap {
  margin-left: 76px;
}

.syllabus-section > p {
  margin-top: 0;
  margin-bottom: 20px;
}

#live-online-meetings + p {
  padding: 16px 18px;
  border-left: 3px solid var(--mint-dark);
  background: rgba(88, 214, 177, 0.1);
  font-weight: 700;
}

#live-online-meetings + p a {
  font-weight: 800;
}

.syllabus-section > ul,
.syllabus-section > ol {
  margin-top: 20px;
  margin-bottom: 28px;
  padding-left: 25px;
}

.syllabus-section li {
  margin: 0 0 12px;
  padding-left: 8px;
}

.list-detail {
  display: block;
  margin-top: 6px;
  color: #4f4c54;
}

.syllabus-section li::marker {
  color: var(--raspberry);
  font-weight: 800;
}

.syllabus-section strong {
  font-weight: 750;
}

.table-wrap {
  max-width: calc(100% - 76px);
  margin-top: 28px;
  margin-bottom: 32px;
  overflow-x: auto;
  border-top: 2px solid var(--graphite);
  border-bottom: 1px solid var(--line);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
  line-height: 1.45;
}

th,
td {
  padding: 14px 16px 14px 0;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

th:last-child,
td:last-child {
  padding-right: 0;
}

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

footer {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  padding: 32px max(28px, calc((100% - 1180px) / 2));
  background: var(--graphite);
  color: rgba(245, 242, 234, 0.58);
  font-size: 0.8rem;
}

footer a {
  color: var(--ivory);
  font-weight: 700;
}

@media (max-width: 980px) {
  .hero-inner {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-bottom: 30px;
  }

  .hero-copy {
    position: relative;
    z-index: 1;
  }

  .hero-visual {
    position: absolute;
    right: -100px;
    bottom: -30px;
    width: 460px;
    opacity: 0.28;
  }

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

  .course-facts > div:nth-child(2) {
    border-right: 0;
  }

  .course-facts > div:nth-child(3),
  .course-facts > div:nth-child(4) {
    border-top: 1px solid rgba(245, 242, 234, 0.14);
  }

  .course-facts > div:nth-child(3) {
    padding-left: 0;
  }

  .site-shell {
    grid-template-columns: 205px minmax(0, var(--content-width));
    gap: 54px;
  }

  .start-here-inner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  body {
    font-size: 16px;
  }

  .hero-inner,
  .first-meeting-banner,
  .course-facts,
  .start-here-inner,
  .self-check-shell,
  .site-shell {
    width: min(100% - 36px, 680px);
  }

  .hero-inner {
    padding: 72px 0 46px;
  }

  h1 {
    font-size: clamp(3rem, 16vw, 5rem);
  }

  .hero-summary {
    max-width: 520px;
  }

  .first-meeting-banner {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 18px;
  }

  .first-meeting-banner div {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .course-facts {
    grid-template-columns: 1fr;
  }

  .course-facts > div,
  .course-facts > div:not(:first-child),
  .course-facts > div:nth-child(3) {
    min-height: auto;
    padding: 20px 0;
    border-top: 1px solid rgba(245, 242, 234, 0.14);
    border-right: 0;
  }

  .site-shell {
    display: block;
    padding: 34px 0 88px;
  }

  .start-here-inner,
  .self-check-shell {
    padding: 74px 0 82px;
  }

  .self-check-intro {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .self-check-intro .quiz-button {
    justify-self: start;
  }

  .results-topics {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: none;
  }

  .mobile-nav {
    position: sticky;
    top: 10px;
    z-index: 20;
    display: block;
    margin: 0 0 72px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(251, 249, 244, 0.96);
    box-shadow: 0 10px 32px rgba(25, 24, 31, 0.08);
    backdrop-filter: blur(12px);
  }

  .mobile-nav summary {
    padding: 14px 16px;
    color: var(--graphite);
    font-weight: 800;
    cursor: pointer;
  }

  .mobile-nav nav {
    max-height: 58vh;
    padding: 8px 16px 18px;
    overflow: auto;
    border-top: 1px solid var(--line);
  }

  .chapter-marker {
    margin-bottom: 32px;
  }

  .syllabus-section {
    margin-bottom: 82px;
  }

  .section-heading {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 8px;
    margin-bottom: 26px;
  }

  .syllabus-section > p,
  .syllabus-section > h3,
  .syllabus-section > ul,
  .syllabus-section > ol,
  .syllabus-section > .table-wrap {
    margin-left: 48px;
  }

  .table-wrap {
    max-width: calc(100% - 48px);
  }

  table {
    min-width: 620px;
  }

  footer {
    flex-direction: column;
    padding: 28px 20px;
  }
}

@media (max-width: 460px) {
  .hero-actions {
    align-items: stretch;
  }

  .button {
    justify-content: center;
    width: 100%;
  }

  .text-link {
    margin: 0;
    text-align: center;
  }

  .start-here-list li {
    grid-template-columns: 24px minmax(0, 1fr);
    gap: 10px;
  }

  .start-here-list label {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 8px;
  }

  .check-item-main {
    gap: 8px;
  }

  .quiz-progress {
    grid-template-columns: 1fr;
    gap: 9px;
  }

  .quiz-controls {
    align-items: stretch;
    flex-direction: column-reverse;
  }

  .quiz-controls .quiz-button {
    width: 100%;
  }

  .results-summary {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .section-heading {
    display: block;
  }

  .section-number {
    display: block;
    margin: 0 0 10px;
  }

  .syllabus-section > p,
  .syllabus-section > h3,
  .syllabus-section > ul,
  .syllabus-section > ol,
  .syllabus-section > .table-wrap {
    margin-left: 0;
  }

  .table-wrap {
    max-width: 100%;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}