:root {
  color-scheme: light;
  --bg: #f3f5ef;
  --bg-soft: #eef1ea;
  --surface: #fffdf8;
  --surface-raised: #ffffff;
  --surface-muted: #f5f6f1;
  --ink: #17241f;
  --ink-strong: #0e1915;
  --muted: #66736d;
  --muted-strong: #4e5c55;
  --line: #dce2da;
  --line-strong: #c8d0c7;
  --sidebar: #17352e;
  --sidebar-deep: #102b25;
  --sidebar-text: #eaf2ec;
  --sidebar-muted: #a9beb5;
  --accent: #d9573f;
  --accent-strong: #b83f2d;
  --accent-soft: #fbe8e2;
  --button-accent: #b83f2d;
  --button-accent-hover: #9e3022;
  --teal: #0d6a60;
  --teal-strong: #07584f;
  --teal-soft: #dff1ec;
  --blue: #2c6399;
  --blue-soft: #e4edf8;
  --amber: #855306;
  --amber-soft: #fbefd7;
  --green: #34784f;
  --green-soft: #e3f0e7;
  --danger: #ae4038;
  --danger-soft: #fae8e5;
  --shadow-sm: 0 1px 2px rgba(14, 31, 25, 0.04), 0 5px 18px rgba(14, 31, 25, 0.04);
  --shadow-md: 0 18px 50px rgba(14, 31, 25, 0.11);
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --sidebar-width: 276px;
  --topbar-height: 72px;
  --content-width: 1180px;
  --font-ui: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-code: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #101915;
  --bg-soft: #15211c;
  --surface: #18231e;
  --surface-raised: #1c2923;
  --surface-muted: #202e27;
  --ink: #e8f0ea;
  --ink-strong: #f7fbf8;
  --muted: #a3b2aa;
  --muted-strong: #c0ccc5;
  --line: #304139;
  --line-strong: #40554b;
  --sidebar: #0b211b;
  --sidebar-deep: #071914;
  --sidebar-text: #eff8f1;
  --sidebar-muted: #9bb4aa;
  --accent: #ef785f;
  --accent-strong: #ff947d;
  --accent-soft: #40231d;
  --button-accent: #b83f2d;
  --button-accent-hover: #d4543f;
  --teal: #4fb8a9;
  --teal-strong: #7bd3c7;
  --teal-soft: #173a34;
  --blue: #75a9da;
  --blue-soft: #1e3348;
  --amber: #e5ae55;
  --amber-soft: #3e321e;
  --green: #79bc8f;
  --green-soft: #203a29;
  --danger: #ed8177;
  --danger-soft: #422521;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.18), 0 5px 18px rgba(0, 0, 0, 0.11);
  --shadow-md: 0 18px 50px rgba(0, 0, 0, 0.32);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button,
input,
select,
textarea {
  font: inherit;
}

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

a {
  color: inherit;
}

img,
svg {
  display: block;
}

[hidden] {
  display: none !important;
}

button {
  color: inherit;
}

::selection {
  background: var(--teal);
  color: #fff;
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--teal) 70%, white);
  outline-offset: 3px;
}

.view h1[tabindex="-1"]:focus {
  outline: 0;
}

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

.skip-link {
  position: fixed;
  z-index: 999;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  border-radius: 9px;
  background: var(--ink-strong);
  color: var(--surface);
  font-weight: 800;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

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

.app-shell {
  min-height: 100vh;
}

.sidebar {
  position: fixed;
  z-index: 50;
  inset: 0 auto 0 0;
  display: flex;
  width: var(--sidebar-width);
  flex-direction: column;
  overflow-y: auto;
  background:
    radial-gradient(circle at 12% 7%, rgba(97, 182, 157, 0.16), transparent 23%),
    linear-gradient(180deg, var(--sidebar) 0%, var(--sidebar-deep) 100%);
  color: var(--sidebar-text);
  border-right: 1px solid rgba(255, 255, 255, 0.06);
}

.sidebar__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 90px;
  padding: 18px 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.brand__mark {
  display: inline-flex;
  width: 48px;
  height: 48px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  color: #ffffff;
  font-family: var(--font-code);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: -0.08em;
}

.brand__dot {
  margin-inline: 1px;
  color: #f09b82;
}

.brand__text {
  display: grid;
  line-height: 1.15;
}

.brand__text strong {
  font-size: 20px;
  letter-spacing: -0.03em;
}

.brand__text small {
  margin-top: 5px;
  color: var(--sidebar-muted);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.02em;
}

.nav-list {
  display: grid;
  gap: 5px;
  padding: 18px 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}

.nav-item {
  position: relative;
  display: flex;
  min-height: 48px;
  align-items: center;
  gap: 13px;
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--sidebar-muted);
  font-size: 14px;
  font-weight: 680;
  text-decoration: none;
  transition: color 160ms ease, background 160ms ease, transform 160ms ease;
}

.nav-item:hover {
  color: var(--sidebar-text);
  background: rgba(255, 255, 255, 0.07);
}

.nav-item.is-active {
  color: #fff;
  background: rgba(255, 255, 255, 0.11);
  box-shadow: inset 3px 0 0 #f28367;
}

.nav-item svg {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.nav-item:first-child svg {
  fill: currentColor;
  stroke: none;
}

.nav-item__count {
  min-width: 25px;
  margin-left: auto;
  padding: 2px 7px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: inherit;
  font-family: var(--font-code);
  font-size: 11px;
  text-align: center;
}

.sidebar-progress {
  margin: 12px 18px 0;
  padding: 17px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.055);
}

.sidebar-progress__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 12px;
  font-weight: 700;
}

.sidebar-progress__head strong {
  color: #fff;
  font-family: var(--font-code);
  font-size: 12px;
}

.progress-track {
  display: block;
  width: 100%;
  height: 6px;
  margin-top: 12px;
  overflow: hidden;
  appearance: none;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.11);
}

.progress-track::-webkit-progress-bar {
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.11);
}

.progress-track::-webkit-progress-value {
  border-radius: 999px;
  background: linear-gradient(90deg, #f28367, #f4b060);
  transition: width 350ms ease;
}

.progress-track::-moz-progress-bar {
  border-radius: 999px;
  background: linear-gradient(90deg, #f28367, #f4b060);
}

.sidebar-progress p {
  margin: 10px 0 0;
  color: var(--sidebar-muted);
  font-size: 11px;
}

.sidebar__footer {
  margin-top: auto;
  padding: 18px;
}

.sidebar-tip {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--sidebar-muted);
}

.sidebar-tip__icon {
  display: grid;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 50%;
  color: #fff;
  font-size: 12px;
  font-weight: 800;
}

.sidebar-tip p {
  display: grid;
  margin: 0;
  font-size: 11px;
}

.sidebar-tip strong {
  color: var(--sidebar-text);
  font-size: 12px;
}

kbd {
  display: inline-grid;
  min-width: 22px;
  height: 22px;
  place-items: center;
  padding-inline: 5px;
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  border-radius: 6px;
  background: var(--surface-raised);
  color: var(--muted-strong);
  font-family: var(--font-code);
  font-size: 10px;
  line-height: 1;
}

.sidebar kbd {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
  color: var(--sidebar-text);
}

.app-main {
  min-height: 100vh;
  margin-left: var(--sidebar-width);
}

.topbar {
  position: sticky;
  z-index: 30;
  top: 0;
  display: flex;
  height: var(--topbar-height);
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(20px, 4vw, 48px);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 76%, transparent);
  background: color-mix(in srgb, var(--bg) 87%, transparent);
  backdrop-filter: blur(18px);
}

.topbar__left,
.topbar__actions,
.breadcrumb {
  display: flex;
  align-items: center;
}

.topbar__actions {
  gap: 8px;
}

.breadcrumb {
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.breadcrumb svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
}

.breadcrumb strong {
  color: var(--ink);
  font-weight: 750;
}

.icon-button {
  display: inline-grid;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  place-items: center;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--surface);
  color: var(--muted-strong);
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease, transform 160ms ease;
}

.icon-button:hover {
  border-color: var(--line-strong);
  background: var(--surface-raised);
  color: var(--ink);
  transform: translateY(-1px);
}

.icon-button svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.mobile-menu,
.sidebar__close {
  display: none;
}

.search-trigger {
  display: inline-flex;
  min-width: 255px;
  height: 42px;
  align-items: center;
  gap: 9px;
  padding: 0 10px 0 13px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  font-size: 12px;
  text-align: left;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.search-trigger:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-sm);
}

.search-trigger svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
}

.search-trigger span {
  flex: 1;
}

.theme-icon--moon {
  display: none;
}

html[data-theme="dark"] .theme-icon--sun {
  display: none;
}

html[data-theme="dark"] .theme-icon--moon {
  display: block;
}

#main-content {
  min-height: calc(100vh - var(--topbar-height));
}

.view {
  display: none;
  width: min(100% - clamp(32px, 7vw, 96px), var(--content-width));
  margin-inline: auto;
  padding: clamp(32px, 5vw, 64px) 0 80px;
}

.view.is-active {
  display: block;
  animation: view-in 240ms ease both;
}

@keyframes view-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.loading-state {
  display: grid;
  min-height: 55vh;
  place-items: center;
  align-content: center;
  color: var(--muted);
}

.loading-state__mark {
  display: grid;
  width: 64px;
  height: 64px;
  place-items: center;
  border-radius: 20px;
  background: var(--sidebar);
  color: #fff;
  font-family: var(--font-code);
  font-weight: 800;
  animation: loading-pulse 1.4s ease-in-out infinite;
}

@keyframes loading-pulse {
  50% { transform: scale(0.95); opacity: 0.72; }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--teal-strong);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 20px;
  height: 2px;
  border-radius: 99px;
  background: currentColor;
  content: "";
}

.page-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 32px;
}

.page-header__copy {
  max-width: 720px;
}

.page-header h1,
.hero h1 {
  margin: 9px 0 12px;
  color: var(--ink-strong);
  font-size: clamp(2.15rem, 5vw, 4.4rem);
  font-weight: 820;
  letter-spacing: -0.055em;
  line-height: 0.99;
}

.page-header h1 {
  font-size: clamp(2rem, 4vw, 3.35rem);
  line-height: 1.05;
}

.page-header p,
.hero__lead {
  max-width: 65ch;
  margin: 0;
  color: var(--muted-strong);
  font-size: clamp(0.98rem, 1.5vw, 1.12rem);
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 10px 17px;
  border: 1px solid transparent;
  border-radius: 11px;
  cursor: pointer;
  font-weight: 780;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease, border-color 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button--primary {
  background: var(--button-accent);
  color: #fff;
  box-shadow: 0 8px 20px color-mix(in srgb, var(--button-accent) 25%, transparent);
}

.button--primary:hover {
  background: var(--button-accent-hover);
}

.button--secondary {
  border-color: var(--line-strong);
  background: var(--surface);
  color: var(--ink);
}

.button--secondary:hover {
  border-color: var(--teal);
  background: var(--surface-raised);
}

.button--ghost {
  border-color: transparent;
  background: transparent;
  color: var(--teal-strong);
}

.button svg,
.text-link svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(285px, 0.55fr);
  gap: clamp(32px, 5vw, 72px);
  min-height: 450px;
  align-items: center;
  overflow: hidden;
  padding: clamp(34px, 6vw, 72px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 92% 18%, color-mix(in srgb, var(--teal) 15%, transparent), transparent 34%),
    radial-gradient(circle at 5% 95%, color-mix(in srgb, var(--accent) 11%, transparent), transparent 36%),
    var(--surface);
  box-shadow: var(--shadow-sm);
}

.hero::before {
  position: absolute;
  top: -80px;
  right: -110px;
  width: 300px;
  height: 300px;
  border: 1px solid color-mix(in srgb, var(--teal) 18%, transparent);
  border-radius: 50%;
  content: "";
}

.hero__copy {
  position: relative;
  z-index: 1;
}

.hero__copy h1 em {
  color: var(--accent);
  font-style: normal;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 27px;
}

.hero__visual {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
}

.progress-orbit {
  position: relative;
  display: grid;
  width: min(255px, 100%);
  aspect-ratio: 1;
  place-items: center;
}

.progress-orbit::before,
.progress-orbit::after {
  position: absolute;
  border-radius: 50%;
  content: "";
}

.progress-orbit::before {
  inset: 0;
  background: conic-gradient(var(--accent) var(--progress, 0%), var(--line) 0);
  -webkit-mask: radial-gradient(circle, transparent 58%, #000 59%);
  mask: radial-gradient(circle, transparent 58%, #000 59%);
  transition: background 300ms ease;
}

.progress-orbit::after {
  inset: 25px;
  border: 1px dashed color-mix(in srgb, var(--muted) 28%, transparent);
}

.progress-orbit__center {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
  text-align: center;
}

.progress-orbit__center strong {
  color: var(--ink-strong);
  font-family: var(--font-code);
  font-size: 2.35rem;
  letter-spacing: -0.06em;
}

.progress-orbit__center span {
  max-width: 90px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.3;
}

.orbit-node {
  position: absolute;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 3px solid var(--surface);
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
  color: #fff;
  font-family: var(--font-code);
  font-size: 10px;
  font-weight: 800;
}

.orbit-node--one { top: 8%; left: 7%; background: var(--teal); }
.orbit-node--two { top: 3%; right: 15%; background: var(--blue); }
.orbit-node--three { bottom: 11%; right: 2%; background: var(--amber); }
.orbit-node--four { bottom: 2%; left: 19%; background: var(--green); }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.stat-card {
  display: flex;
  min-height: 116px;
  align-items: center;
  gap: 15px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.stat-card__icon {
  display: grid;
  width: 43px;
  height: 43px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 13px;
  background: var(--teal-soft);
  color: var(--teal-strong);
  font-family: var(--font-code);
  font-size: 13px;
  font-weight: 850;
}

.stat-card:nth-child(2) .stat-card__icon { background: var(--blue-soft); color: var(--blue); }
.stat-card:nth-child(3) .stat-card__icon { background: var(--amber-soft); color: var(--amber); }
.stat-card:nth-child(4) .stat-card__icon { background: var(--green-soft); color: var(--green); }

.stat-card__copy {
  display: grid;
}

.stat-card strong {
  color: var(--ink-strong);
  font-size: 1.55rem;
  letter-spacing: -0.04em;
}

.stat-card span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
}

.section-block {
  margin-top: clamp(42px, 6vw, 72px);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 20px;
}

.section-heading h2 {
  margin: 5px 0 0;
  color: var(--ink-strong);
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.section-heading p {
  max-width: 60ch;
  margin: 6px 0 0;
  color: var(--muted);
}

.text-link {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 7px;
  color: var(--teal-strong);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
}

.text-link:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

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

.phase-card {
  position: relative;
  min-height: 255px;
  overflow: hidden;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.phase-card::after {
  position: absolute;
  right: -28px;
  bottom: -45px;
  width: 110px;
  height: 110px;
  border: 22px solid var(--phase-soft);
  border-radius: 50%;
  content: "";
}

.phase-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.phase-card__number {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 11px;
  background: var(--phase-soft);
  color: var(--phase-color);
  font-family: var(--font-code);
  font-size: 11px;
  font-weight: 850;
}

.phase-card__weeks {
  color: var(--muted);
  font-size: 11px;
  font-weight: 750;
}

.phase-card h3 {
  margin: 25px 0 8px;
  color: var(--ink-strong);
  font-size: 1.2rem;
  letter-spacing: -0.025em;
}

.phase-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.phase-card__meta {
  position: absolute;
  z-index: 1;
  bottom: 20px;
  left: 22px;
  color: var(--phase-color);
  font-family: var(--font-code);
  font-size: 11px;
  font-weight: 850;
}

.phase-1 { --phase-color: var(--teal); --phase-soft: var(--teal-soft); }
.phase-2 { --phase-color: var(--blue); --phase-soft: var(--blue-soft); }
.phase-3 { --phase-color: var(--amber); --phase-soft: var(--amber-soft); }
.phase-4 { --phase-color: var(--green); --phase-soft: var(--green-soft); }

.dashboard-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 18px;
}

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.panel__body {
  padding: clamp(22px, 4vw, 32px);
}

.next-step {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--teal-soft) 75%, var(--surface)), var(--surface) 58%);
}

.next-step::after {
  position: absolute;
  right: -35px;
  bottom: -62px;
  color: color-mix(in srgb, var(--teal) 12%, transparent);
  font-family: var(--font-code);
  font-size: 9rem;
  font-weight: 900;
  content: "C";
}

.next-step__content {
  position: relative;
  z-index: 1;
  max-width: 520px;
}

.next-step__tag,
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 9px;
  border-radius: 999px;
  background: var(--teal-soft);
  color: var(--teal-strong);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.next-step h3 {
  margin: 16px 0 8px;
  color: var(--ink-strong);
  font-size: clamp(1.35rem, 2.8vw, 2rem);
  letter-spacing: -0.035em;
}

.next-step p {
  margin: 0 0 22px;
  color: var(--muted-strong);
}

.method-split {
  display: grid;
  gap: 18px;
}

.method-bars {
  display: grid;
  gap: 13px;
  margin-top: 19px;
}

.method-bar__label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
  color: var(--muted-strong);
  font-size: 11px;
  font-weight: 750;
}

.method-bar__track {
  height: 7px;
  overflow: hidden;
  border-radius: 99px;
  background: var(--bg-soft);
}

.method-bar__track span {
  display: block;
  height: 100%;
  border-radius: inherit;
}

.method-bar:nth-child(1) .method-bar__track span { width: 25%; background: var(--teal); }
.method-bar:nth-child(2) .method-bar__track span { width: 25%; background: var(--blue); }
.method-bar:nth-child(3) .method-bar__track span { width: 50%; background: var(--accent); }

.learning-loop {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.learning-loop__step {
  position: relative;
  min-height: 145px;
  padding: 23px 18px;
  border-right: 1px solid var(--line);
}

.learning-loop__step:last-child {
  border-right: 0;
}

.learning-loop__step span {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 9px;
  background: var(--surface-muted);
  color: var(--muted-strong);
  font-family: var(--font-code);
  font-size: 10px;
  font-weight: 850;
}

.learning-loop__step strong {
  display: block;
  margin-top: 16px;
  color: var(--ink-strong);
  font-size: 13px;
}

.learning-loop__step p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 11px;
}

.callout {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  padding: 20px;
  border: 1px solid color-mix(in srgb, var(--teal) 23%, var(--line));
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--teal-soft) 48%, var(--surface));
}

.callout--warning {
  border-color: color-mix(in srgb, var(--amber) 28%, var(--line));
  background: color-mix(in srgb, var(--amber-soft) 50%, var(--surface));
}

.callout--danger {
  border-color: color-mix(in srgb, var(--danger) 25%, var(--line));
  background: color-mix(in srgb, var(--danger-soft) 50%, var(--surface));
}

.callout__icon {
  display: grid;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 10px;
  background: var(--surface);
  color: var(--teal-strong);
  font-family: var(--font-code);
  font-size: 12px;
  font-weight: 850;
}

.callout--warning .callout__icon { color: var(--amber); }
.callout--danger .callout__icon { color: var(--danger); }

.callout h3,
.callout strong {
  color: var(--ink-strong);
}

.callout h3 {
  margin: 0 0 4px;
  font-size: 14px;
}

.callout p {
  margin: 0;
  color: var(--muted-strong);
  font-size: 13px;
}

.filters-bar {
  position: sticky;
  z-index: 15;
  top: calc(var(--topbar-height) + 10px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
  padding: 11px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(14px);
}

.filter-pills {
  display: flex;
  gap: 5px;
  overflow-x: auto;
  scrollbar-width: none;
}

.filter-pills::-webkit-scrollbar {
  display: none;
}

.filter-pill {
  min-height: 38px;
  padding: 8px 13px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--muted-strong);
  cursor: pointer;
  font-size: 12px;
  font-weight: 750;
  white-space: nowrap;
}

.filter-pill:hover {
  background: var(--surface-muted);
  color: var(--ink);
}

.filter-pill.is-active {
  background: var(--sidebar);
  color: #fff;
}

.filter-summary {
  flex: 0 0 auto;
  padding-inline: 9px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.programme-phase {
  margin-top: 42px;
}

.programme-phase:first-of-type {
  margin-top: 0;
}

.programme-phase__header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 15px;
}

.programme-phase__number {
  display: grid;
  width: 39px;
  height: 39px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 12px;
  background: var(--phase-soft);
  color: var(--phase-color);
  font-family: var(--font-code);
  font-size: 11px;
  font-weight: 850;
}

.programme-phase__header h2 {
  margin: 0;
  color: var(--ink-strong);
  font-size: 1.35rem;
  letter-spacing: -0.03em;
}

.programme-phase__header p {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.week-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.week-card {
  position: relative;
  display: flex;
  min-height: 290px;
  flex-direction: column;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.week-card:hover {
  border-color: color-mix(in srgb, var(--phase-color) 45%, var(--line));
  box-shadow: 0 10px 34px rgba(14, 31, 25, 0.08);
  transform: translateY(-3px);
}

.week-card.is-complete {
  background: linear-gradient(145deg, color-mix(in srgb, var(--green-soft) 28%, var(--surface)), var(--surface));
}

.week-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.week-card__number {
  color: var(--phase-color);
  font-family: var(--font-code);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 8px;
  border-radius: 99px;
  background: var(--surface-muted);
  color: var(--muted);
  font-size: 9px;
  font-weight: 850;
  text-transform: uppercase;
}

.status-chip::before {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--line-strong);
  content: "";
}

.status-chip.is-complete {
  background: var(--green-soft);
  color: var(--green);
}

.status-chip.is-complete::before {
  background: var(--green);
}

.status-chip.is-current {
  background: var(--amber-soft);
  color: var(--amber);
}

.status-chip.is-current::before {
  background: var(--amber);
}

.week-card h3 {
  margin: 18px 0 9px;
  color: var(--ink-strong);
  font-size: 1.08rem;
  letter-spacing: -0.025em;
  line-height: 1.25;
}

.week-card__summary {
  display: -webkit-box;
  overflow: hidden;
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 15px 0 0;
  padding: 0;
  list-style: none;
}

.tag-list li,
.tag {
  padding: 4px 7px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface-muted);
  color: var(--muted-strong);
  font-family: var(--font-code);
  font-size: 9px;
}

.week-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: auto;
  padding-top: 18px;
}

.week-card__duration {
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.card-action {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  gap: 6px;
  padding: 7px 10px;
  border: 0;
  border-radius: 9px;
  background: var(--phase-soft);
  color: var(--phase-color);
  cursor: pointer;
  font-size: 11px;
  font-weight: 800;
}

.card-action:hover {
  filter: saturate(1.15);
}

.lab-intro {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 30px;
  margin-bottom: 28px;
  padding: 25px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.lab-levels {
  display: flex;
  gap: 8px;
}

.level-badge {
  display: grid;
  min-width: 63px;
  min-height: 55px;
  place-items: center;
  padding: 8px;
  border-radius: 12px;
  background: var(--surface-muted);
  color: var(--muted-strong);
  font-size: 10px;
  font-weight: 850;
  text-align: center;
}

.level-badge:nth-child(1) { background: #f2e3d3; color: #895928; }
.level-badge:nth-child(2) { background: #e7ebee; color: #53626c; }
.level-badge:nth-child(3) { background: #f7ebc9; color: #6f4d00; }

html[data-theme="dark"] .level-badge:nth-child(1) { background: #3d2d20; color: #e5ae75; }
html[data-theme="dark"] .level-badge:nth-child(2) { background: #29343a; color: #b9c5cc; }
html[data-theme="dark"] .level-badge:nth-child(3) { background: #423719; color: #ebc866; }

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

.lab-card {
  position: relative;
  display: flex;
  min-height: 335px;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition: transform 180ms ease, border-color 180ms ease;
}

.lab-card:hover {
  border-color: color-mix(in srgb, var(--teal) 35%, var(--line));
  transform: translateY(-3px);
}

.lab-card__stripe {
  height: 5px;
  background: linear-gradient(90deg, var(--lab-color), color-mix(in srgb, var(--lab-color) 35%, transparent));
}

.lab-card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 21px;
}

.lab-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
  font-family: var(--font-code);
  font-size: 10px;
  font-weight: 750;
}

.lab-card__id {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--lab-color);
  font-weight: 900;
}

.lab-card__id::before {
  width: 8px;
  height: 8px;
  border-radius: 3px;
  background: var(--lab-color);
  content: "";
}

.lab-card h3 {
  margin: 18px 0 9px;
  color: var(--ink-strong);
  font-size: 1.18rem;
  letter-spacing: -0.03em;
}

.lab-card p {
  display: -webkit-box;
  overflow: hidden;
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.lab-card__skills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}

.lab-card__skills span {
  padding: 4px 7px;
  border-radius: 7px;
  background: var(--surface-muted);
  color: var(--muted-strong);
  font-size: 9px;
  font-weight: 700;
}

.lab-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: auto;
  padding-top: 20px;
}

.lab-complete {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  cursor: pointer;
  font-size: 10px;
  font-weight: 750;
}

.lab-complete input,
.check-item input {
  width: 17px;
  height: 17px;
  margin: 0;
  accent-color: var(--green);
}

.project-hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 38px;
  overflow: hidden;
  padding: clamp(30px, 5vw, 58px);
  border-radius: var(--radius-lg);
  background: var(--sidebar);
  color: var(--sidebar-text);
}

.project-hero::after {
  position: absolute;
  top: -140px;
  right: -100px;
  width: 400px;
  height: 400px;
  border: 60px solid rgba(255, 255, 255, 0.035);
  border-radius: 50%;
  content: "";
}

.project-hero__copy,
.project-flow {
  position: relative;
  z-index: 1;
}

.project-hero .eyebrow {
  color: #8ed1c1;
}

.project-hero h1 {
  margin: 12px 0 13px;
  color: #fff;
  font-size: clamp(2.1rem, 4.3vw, 3.8rem);
  letter-spacing: -0.055em;
  line-height: 1;
}

.project-hero p {
  max-width: 58ch;
  margin: 0;
  color: var(--sidebar-muted);
}

.project-flow {
  display: grid;
  align-content: center;
  gap: 9px;
}

.project-flow__node {
  display: flex;
  min-height: 53px;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  color: #e8f1ec;
  font-size: 12px;
  font-weight: 700;
}

.project-flow__node span {
  display: grid;
  width: 29px;
  height: 29px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  font-family: var(--font-code);
  font-size: 9px;
}

.project-flow__arrow {
  height: 12px;
  margin-left: 27px;
  border-left: 1px dashed rgba(255, 255, 255, 0.25);
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 18px;
}

.content-grid > *,
.project-hero > *,
.resource-layout > *,
.resource-content,
.content-card {
  min-width: 0;
}

.content-card {
  padding: clamp(22px, 4vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.content-card h2,
.content-card h3 {
  margin-top: 0;
  color: var(--ink-strong);
  letter-spacing: -0.03em;
}

.content-card h2 { font-size: 1.45rem; }
.content-card h3 { font-size: 1.05rem; }

.content-card > p {
  color: var(--muted-strong);
}

.checklist {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface-muted);
  color: var(--muted-strong);
  font-size: 12px;
}

.check-item span:first-child {
  display: grid;
  width: 19px;
  height: 19px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 6px;
  background: var(--green-soft);
  color: var(--green);
  font-size: 10px;
  font-weight: 900;
}

.timeline {
  position: relative;
  display: grid;
  gap: 0;
  margin-top: 20px;
}

.timeline::before {
  position: absolute;
  top: 18px;
  bottom: 18px;
  left: 17px;
  width: 1px;
  background: var(--line-strong);
  content: "";
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 14px;
  padding-bottom: 22px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item__dot {
  z-index: 1;
  display: grid;
  width: 35px;
  height: 35px;
  place-items: center;
  border: 5px solid var(--surface);
  border-radius: 50%;
  background: var(--teal);
  color: #fff;
  font-family: var(--font-code);
  font-size: 8px;
  font-weight: 900;
}

.timeline-item h3 {
  margin: 1px 0 3px;
  font-size: 13px;
}

.timeline-item p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
}

.code-block {
  position: relative;
  overflow: hidden;
  margin: 16px 0;
  border: 1px solid #32463e;
  border-radius: 13px;
  background: #10211b;
  color: #e8f2ec;
}

.code-block__head {
  display: flex;
  min-height: 42px;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 0 10px 0 15px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.025);
  color: #91aa9f;
  font-family: var(--font-code);
  font-size: 9px;
  font-weight: 750;
  text-transform: uppercase;
}

.copy-button {
  min-height: 30px;
  padding: 5px 9px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.06);
  color: #dce9e1;
  cursor: pointer;
  font-size: 9px;
  font-weight: 750;
}

.copy-button:hover {
  background: rgba(255, 255, 255, 0.1);
}

.code-block pre {
  max-width: 100%;
  overflow-x: auto;
  margin: 0;
  padding: 19px;
  font-family: var(--font-code);
  font-size: 12px;
  line-height: 1.65;
  tab-size: 4;
}

.code-block code {
  color: inherit;
  font-family: inherit;
}

.resource-layout {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.resource-nav {
  position: sticky;
  top: calc(var(--topbar-height) + 24px);
  display: grid;
  gap: 5px;
  padding: 9px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}

.resource-nav button {
  min-height: 41px;
  padding: 9px 11px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--muted-strong);
  cursor: pointer;
  font-size: 12px;
  font-weight: 720;
  text-align: left;
}

.resource-nav button:hover {
  background: var(--surface-muted);
}

.resource-nav button.is-active {
  background: var(--teal-soft);
  color: var(--teal-strong);
}

.resource-pane {
  display: none;
}

.resource-pane.is-active {
  display: block;
  animation: view-in 180ms ease both;
}

.resource-pane > .content-card + .content-card {
  margin-top: 16px;
}

.os-tabs {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  margin: 18px 0;
  padding: 5px;
  border-radius: 12px;
  background: var(--surface-muted);
  scrollbar-width: none;
}

.os-tabs::-webkit-scrollbar { display: none; }

.os-tab {
  min-height: 39px;
  padding: 8px 13px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted-strong);
  cursor: pointer;
  font-size: 11px;
  font-weight: 750;
  white-space: nowrap;
}

.os-tab.is-active {
  background: var(--surface-raised);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
}

.os-panel { display: none; }
.os-panel.is-active { display: block; }

.step-list {
  display: grid;
  gap: 12px;
  margin: 20px 0 0;
  padding: 0;
  counter-reset: resource-step;
  list-style: none;
}

.step-list li {
  position: relative;
  min-height: 36px;
  padding: 7px 0 7px 47px;
  color: var(--muted-strong);
  counter-increment: resource-step;
}

.step-list li::before {
  position: absolute;
  top: 3px;
  left: 0;
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 10px;
  background: var(--teal-soft);
  color: var(--teal-strong);
  content: counter(resource-step, decimal-leading-zero);
  font-family: var(--font-code);
  font-size: 9px;
  font-weight: 850;
}

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

.workflow-step {
  display: flex;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--surface-muted);
}

.workflow-step span {
  color: var(--teal-strong);
  font-family: var(--font-code);
  font-size: 10px;
  font-weight: 900;
}

.workflow-step p {
  margin: 0;
  color: var(--muted-strong);
  font-size: 12px;
}

.data-table-wrap {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 13px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  font-size: 12px;
}

.data-table caption {
  padding: 14px 16px;
  color: var(--ink-strong);
  font-weight: 800;
  text-align: left;
}

.data-table th,
.data-table td {
  padding: 13px 15px;
  border-top: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  background: var(--surface-muted);
  color: var(--muted-strong);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.data-table td {
  color: var(--muted-strong);
}

.data-table td strong {
  color: var(--ink-strong);
}

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

.weight-card {
  padding: 19px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--surface);
}

.weight-card strong {
  display: block;
  color: var(--accent);
  font-family: var(--font-code);
  font-size: 1.7rem;
  letter-spacing: -0.06em;
}

.weight-card span {
  color: var(--muted-strong);
  font-size: 11px;
  font-weight: 700;
}

.mastery-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.mastery-card {
  min-height: 175px;
  padding: 19px;
  border-right: 1px solid var(--line);
}

.mastery-card:last-child { border-right: 0; }

.mastery-card__week {
  color: var(--teal-strong);
  font-family: var(--font-code);
  font-size: 10px;
  font-weight: 900;
}

.mastery-card h3 {
  margin: 14px 0 6px;
  color: var(--ink-strong);
  font-size: 13px;
}

.mastery-card p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
}

.accordion-list {
  display: grid;
  gap: 9px;
}

.accordion {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.accordion__trigger {
  display: flex;
  width: 100%;
  min-height: 54px;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 16px;
  border: 0;
  background: transparent;
  color: var(--ink-strong);
  cursor: pointer;
  font-size: 12px;
  font-weight: 780;
  text-align: left;
}

.accordion__trigger::after {
  display: grid;
  width: 25px;
  height: 25px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 7px;
  background: var(--surface-muted);
  color: var(--muted);
  content: "+";
  font-family: var(--font-code);
}

.accordion__trigger[aria-expanded="true"]::after {
  content: "−";
}

.accordion__content {
  display: none;
  padding: 0 16px 16px;
  color: var(--muted-strong);
  font-size: 12px;
}

.accordion__content p { margin: 0; }

.accordion__trigger[aria-expanded="true"] + .accordion__content {
  display: block;
}

.detail-dialog,
.search-dialog {
  width: min(100% - 28px, 760px);
  max-height: min(86vh, 820px);
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface-raised);
  color: var(--ink);
  box-shadow: var(--shadow-md);
}

.detail-dialog {
  width: min(100% - 28px, 860px);
}

.detail-dialog::backdrop,
.search-dialog::backdrop {
  background: rgba(7, 19, 15, 0.64);
  backdrop-filter: blur(5px);
}

.search-dialog__header {
  display: flex;
  min-height: 66px;
  align-items: center;
  gap: 13px;
  padding: 10px 13px 10px 20px;
  border-bottom: 1px solid var(--line);
}

.search-dialog__header svg {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  fill: none;
  stroke: var(--muted);
  stroke-width: 1.8;
}

.search-dialog__header input {
  min-width: 0;
  flex: 1;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink-strong);
  font-size: 15px;
}

.search-dialog__header input::placeholder {
  color: var(--muted);
}

.dialog-key {
  min-height: 30px;
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface-muted);
  color: var(--muted);
  cursor: pointer;
  font-family: var(--font-code);
  font-size: 9px;
}

.search-dialog__body {
  min-height: 280px;
  max-height: 58vh;
  overflow-y: auto;
  padding: 12px;
}

.search-empty {
  display: grid;
  min-height: 250px;
  place-items: center;
  align-content: center;
  padding: 30px;
  color: var(--muted);
  text-align: center;
}

.search-empty > span {
  display: grid;
  width: 50px;
  height: 50px;
  place-items: center;
  margin-bottom: 12px;
  border-radius: 15px;
  background: var(--surface-muted);
  color: var(--teal-strong);
  font-size: 24px;
}

.search-empty p {
  margin: 2px 0;
  font-size: 12px;
}

.search-empty strong {
  color: var(--ink-strong);
  font-size: 14px;
}

.search-result {
  display: grid;
  width: 100%;
  gap: 4px;
  padding: 12px 13px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  text-align: left;
}

.search-result:hover,
.search-result.is-selected {
  background: var(--surface-muted);
}

.search-result__type {
  color: var(--teal-strong);
  font-family: var(--font-code);
  font-size: 9px;
  font-weight: 850;
  text-transform: uppercase;
}

.search-result strong {
  color: var(--ink-strong);
  font-size: 13px;
}

.search-result span:last-child {
  overflow: hidden;
  color: var(--muted);
  font-size: 11px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.search-dialog__footer {
  display: flex;
  min-height: 43px;
  align-items: center;
  justify-content: flex-end;
  gap: 15px;
  padding: 7px 14px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 9px;
}

.search-dialog__footer span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.detail-dialog__topbar {
  position: sticky;
  z-index: 2;
  top: 0;
  display: flex;
  min-height: 62px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 10px 14px 10px 25px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface-raised) 94%, transparent);
  backdrop-filter: blur(10px);
}

.detail-dialog__eyebrow {
  color: var(--teal-strong);
  font-family: var(--font-code);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.detail-dialog__content {
  max-height: calc(86vh - 62px);
  overflow-y: auto;
  padding: clamp(24px, 5vw, 44px);
}

.detail-title {
  margin: 0 0 10px;
  color: var(--ink-strong);
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  letter-spacing: -0.05em;
  line-height: 1.05;
}

.detail-lead {
  margin: 0 0 25px;
  color: var(--muted-strong);
  font-size: 14px;
}

.detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.detail-section {
  margin-top: 28px;
}

.detail-section h3 {
  margin: 0 0 11px;
  color: var(--ink-strong);
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.detail-section ul,
.detail-section ol {
  display: grid;
  gap: 7px;
  margin: 0;
  padding-left: 20px;
  color: var(--muted-strong);
  font-size: 13px;
}

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

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 30px;
  padding-top: 23px;
  border-top: 1px solid var(--line);
}

.toast {
  position: fixed;
  z-index: 100;
  right: 24px;
  bottom: 24px;
  display: flex;
  min-width: 235px;
  max-width: min(420px, calc(100% - 32px));
  min-height: 50px;
  align-items: center;
  gap: 10px;
  padding: 11px 15px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 13px;
  background: var(--sidebar);
  box-shadow: var(--shadow-md);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  opacity: 0;
  pointer-events: none;
  transform: translateY(14px);
  transition: opacity 180ms ease, transform 180ms ease;
}

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

.toast__icon {
  display: grid;
  width: 25px;
  height: 25px;
  place-items: center;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  color: #91d3b2;
}

.empty-results {
  display: grid;
  min-height: 250px;
  place-items: center;
  align-content: center;
  padding: 30px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  color: var(--muted);
  text-align: center;
}

.empty-results strong {
  color: var(--ink-strong);
}

.site-footer {
  display: flex;
  width: min(100% - clamp(32px, 7vw, 96px), var(--content-width));
  min-height: 82px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-inline: auto;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
}

.site-footer p { margin: 0; }
.site-footer strong { color: var(--ink); }

.noscript-message {
  position: fixed;
  z-index: 200;
  inset: auto 15px 15px;
  padding: 16px;
  border-radius: 12px;
  background: var(--danger);
  color: #fff;
  text-align: center;
}

@media (max-width: 1120px) {
  :root { --sidebar-width: 246px; }
  .week-grid,
  .lab-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .phase-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mastery-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .mastery-card { border-bottom: 1px solid var(--line); }
  .mastery-card:nth-child(3n) { border-right: 0; }
}

@media (max-width: 900px) {
  :root { --sidebar-width: 282px; }

  .sidebar {
    transform: translateX(-102%);
    transition: transform 220ms ease;
  }

  body.sidebar-open {
    overflow: hidden;
  }

  body.sidebar-open .sidebar {
    transform: translateX(0);
    box-shadow: var(--shadow-md);
  }

  .sidebar-backdrop {
    position: fixed;
    z-index: 45;
    inset: 0;
    display: block;
    background: rgba(5, 17, 13, 0.58);
    opacity: 0;
    transition: opacity 200ms ease;
  }

  body.sidebar-open .sidebar-backdrop {
    opacity: 1;
  }

  .sidebar__close,
  .mobile-menu {
    display: inline-grid;
  }

  .sidebar__close {
    border-color: rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.07);
    color: #fff;
  }

  .app-main {
    margin-left: 0;
  }

  .topbar__left {
    gap: 12px;
  }

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

  .hero__visual {
    display: none;
  }

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

  .dashboard-grid,
  .content-grid,
  .project-hero {
    grid-template-columns: 1fr;
  }

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

  .project-flow__arrow {
    display: none;
  }

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

  .learning-loop__step {
    border-bottom: 1px solid var(--line);
  }

  .resource-layout {
    grid-template-columns: 1fr;
  }

  .resource-nav {
    position: static;
    display: flex;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .resource-nav::-webkit-scrollbar { display: none; }
  .resource-nav button { flex: 0 0 auto; white-space: nowrap; }
}

@media (max-width: 680px) {
  :root { --topbar-height: 64px; }

  .topbar {
    padding-inline: 14px;
  }

  .breadcrumb span,
  .breadcrumb svg,
  .search-trigger span,
  .search-trigger kbd,
  #print-page {
    display: none;
  }

  .search-trigger {
    display: inline-grid;
    width: 42px;
    min-width: 42px;
    place-items: center;
    padding: 0;
  }

  .view {
    width: min(100% - 28px, var(--content-width));
    padding-top: 28px;
  }

  .hero {
    min-height: auto;
    padding: 29px 23px;
    border-radius: 19px;
  }

  .hero h1 {
    font-size: clamp(2.25rem, 13vw, 3.4rem);
  }

  .hero__actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .stat-grid,
  .phase-grid,
  .week-grid,
  .lab-grid,
  .weight-grid,
  .workflow-grid {
    grid-template-columns: 1fr;
  }

  .stat-card {
    min-height: 96px;
  }

  .section-heading,
  .page-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .filters-bar {
    align-items: stretch;
    flex-direction: column;
    top: calc(var(--topbar-height) + 6px);
  }

  .filter-summary {
    display: none;
  }

  .learning-loop,
  .mastery-grid {
    grid-template-columns: 1fr;
  }

  .learning-loop__step,
  .mastery-card,
  .mastery-card:nth-child(3n) {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .learning-loop__step:last-child,
  .mastery-card:last-child {
    border-bottom: 0;
  }

  .lab-intro {
    align-items: flex-start;
    grid-template-columns: 1fr;
  }

  .lab-levels {
    width: 100%;
  }

  .level-badge {
    flex: 1;
  }

  .project-flow {
    grid-template-columns: 1fr;
  }

  .project-flow__arrow {
    display: block;
  }

  .detail-dialog__content {
    padding: 22px 18px 30px;
  }

  .detail-actions {
    display: grid;
  }

  .toast {
    right: 16px;
    bottom: 16px;
    left: 16px;
    min-width: 0;
  }

  .site-footer {
    width: calc(100% - 28px);
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding-block: 20px;
  }
}

@media (max-width: 390px) {
  .sidebar { width: 100%; }
  .stat-grid { grid-template-columns: 1fr; }
  .os-tabs { margin-inline: -10px; }
  .detail-dialog,
  .search-dialog {
    width: calc(100% - 16px);
    max-height: calc(100vh - 16px);
    border-radius: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  :root {
    --bg: #fff;
    --surface: #fff;
    --surface-raised: #fff;
    --surface-muted: #f4f4f4;
    --ink: #111;
    --ink-strong: #000;
    --muted: #444;
    --muted-strong: #222;
    --line: #ccc;
  }

  @page { size: A4 portrait; margin: 14mm; }

  body { background: #fff; font-size: 10pt; }

  .sidebar,
  .topbar,
  .site-footer,
  .filters-bar,
  .button,
  .card-action,
  .copy-button,
  .lab-complete,
  .detail-actions,
  .toast,
  dialog {
    display: none !important;
  }

  .app-main { margin: 0; }

  .view {
    display: none !important;
    width: 100%;
    padding: 0 0 12mm;
  }

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

  .hero,
  .project-hero {
    min-height: 0;
    padding: 8mm;
    border: 1px solid #aaa;
    background: #fff !important;
    color: #111;
  }

  .hero__visual { display: none; }
  .project-hero h1,
  .project-hero p { color: #111; }

  .stat-grid,
  .phase-grid,
  .week-grid,
  .lab-grid,
  .weight-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .week-card,
  .lab-card,
  .content-card,
  .panel,
  .phase-card,
  .stat-card,
  .accordion,
  .code-block {
    box-shadow: none;
    break-inside: avoid;
  }

  .accordion__content { display: block !important; }
  .accordion__trigger::after { display: none; }
  .code-block { white-space: pre-wrap; }
  .code-block pre { overflow: visible; white-space: pre-wrap; overflow-wrap: anywhere; }
  a { color: #000; text-decoration: underline; }
}

/* ================================================================
   Cours détaillé
   ================================================================ */

.lesson-page {
  --lesson-reading-width: 78ch;
  position: relative;
  min-width: 0;
}

.lesson-back {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding: 7px 11px 7px 8px;
  border-radius: 10px;
  color: var(--muted-strong);
  font-size: 13px;
  font-weight: 750;
  text-decoration: none;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease;
}

.lesson-back:hover {
  background: var(--surface);
  color: var(--ink-strong);
  transform: translateX(-2px);
}

.lesson-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(28px, 5vw, 56px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 92% 6%, color-mix(in srgb, var(--teal) 18%, transparent), transparent 31%),
    radial-gradient(circle at 4% 100%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 38%),
    var(--surface);
  box-shadow: var(--shadow-sm);
}

.lesson-hero::after {
  position: absolute;
  z-index: -1;
  top: -112px;
  right: -72px;
  width: 270px;
  height: 270px;
  border: 1px solid color-mix(in srgb, var(--teal) 18%, transparent);
  border-radius: 50%;
  content: "";
}

.lesson-hero__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px;
}

.lesson-hero h1 {
  max-width: 18ch;
  margin: 12px 0 16px;
  color: var(--ink-strong);
  font-size: clamp(2.15rem, 5vw, 4rem);
  font-weight: 840;
  letter-spacing: -0.055em;
  line-height: 1.01;
}

.lesson-hero p {
  max-width: 68ch;
  margin: 0;
  color: var(--muted-strong);
  font-size: clamp(0.98rem, 1.6vw, 1.12rem);
}

.lesson-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 26px;
  padding: 0;
  list-style: none;
}

.lesson-hero__meta > * {
  display: inline-flex;
  min-height: 31px;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border: 1px solid color-mix(in srgb, var(--teal) 16%, var(--line));
  border-radius: 999px;
  background: color-mix(in srgb, var(--teal-soft) 48%, var(--surface));
  color: var(--teal-strong);
  font-size: 11px;
  font-weight: 780;
}

.lesson-progress-status {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  min-height: 42px;
  flex: 0 0 auto;
  align-items: center;
  column-gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: color-mix(in srgb, var(--surface-raised) 88%, transparent);
  color: var(--muted-strong);
  box-shadow: var(--shadow-sm);
  font-size: 12px;
  font-weight: 800;
}

button.lesson-progress-status,
label.lesson-progress-status {
  cursor: pointer;
}

.lesson-progress-status > span {
  display: grid;
  width: 34px;
  height: 34px;
  grid-row: 1 / span 2;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--surface-muted);
  color: var(--muted-strong);
  font-family: var(--font-code);
  font-size: 10px;
  font-weight: 900;
}

.lesson-progress-status > strong {
  align-self: end;
  color: var(--ink-strong);
  font-size: 12px;
  line-height: 1.25;
}

.lesson-progress-status > small {
  align-self: start;
  color: var(--muted);
  font-size: 9px;
  font-weight: 650;
  line-height: 1.25;
}

.lesson-progress-status.is-complete,
.lesson-progress-status[aria-pressed="true"] {
  border-color: color-mix(in srgb, var(--green) 42%, var(--line));
  background: var(--green-soft);
  color: var(--green);
}

.lesson-progress-status.is-complete > span,
.lesson-progress-status[aria-pressed="true"] > span {
  border-color: var(--green);
  background: var(--green);
  color: #fff;
}

.lesson-layout {
  display: grid;
  grid-template-columns: minmax(190px, 224px) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
  margin-top: clamp(32px, 5vw, 54px);
}

.lesson-toc {
  position: sticky;
  top: calc(var(--topbar-height) + 24px);
  max-height: calc(100vh - var(--topbar-height) - 48px);
  overflow-y: auto;
  padding: 17px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  box-shadow: var(--shadow-sm);
  scrollbar-width: thin;
}

.lesson-toc > strong,
.lesson-toc > h2 {
  display: block;
  margin: 0 0 11px;
  color: var(--ink-strong);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lesson-toc__nav {
  display: grid;
  gap: 3px;
}

.lesson-toc__nav a,
.lesson-toc__nav button {
  position: relative;
  display: block;
  width: 100%;
  padding: 8px 9px 8px 20px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-family: inherit;
  font-size: 11px;
  font-weight: 700;
  line-height: 1.35;
  text-align: left;
  text-decoration: none;
  transition: background 150ms ease, color 150ms ease;
}

.lesson-toc__nav a::before,
.lesson-toc__nav button::before {
  position: absolute;
  top: 13px;
  left: 8px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--line-strong);
  content: "";
}

.lesson-toc__nav a:hover,
.lesson-toc__nav button:hover,
.lesson-toc__nav a.is-active,
.lesson-toc__nav button.is-active,
.lesson-toc__nav a[aria-current="location"],
.lesson-toc__nav button[aria-current="location"] {
  background: var(--teal-soft);
  color: var(--teal-strong);
}

.lesson-toc__nav a.is-active::before,
.lesson-toc__nav button.is-active::before,
.lesson-toc__nav a[aria-current="location"]::before,
.lesson-toc__nav button[aria-current="location"]::before {
  background: var(--teal);
}

.lesson-toc__nav button > span {
  display: inline-block;
  min-width: 23px;
  color: var(--teal);
  font-family: var(--font-code);
  font-size: 9px;
  font-weight: 900;
}

.lesson-article {
  min-width: 0;
}

.lesson-article > * + * {
  margin-top: 24px;
}

.lesson-section {
  min-width: 0;
  scroll-margin-top: calc(var(--topbar-height) + 28px);
  padding: clamp(24px, 4vw, 40px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.lesson-section > :first-child {
  margin-top: 0;
}

.lesson-section > :last-child {
  margin-bottom: 0;
}

.lesson-section h2 {
  margin: 0 0 20px;
  color: var(--ink-strong);
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  letter-spacing: -0.035em;
  line-height: 1.12;
}

.lesson-section h3 {
  margin: 26px 0 10px;
  color: var(--ink-strong);
  font-size: 1.05rem;
  letter-spacing: -0.015em;
}

.lesson-section p {
  max-width: var(--lesson-reading-width);
  margin: 0 0 14px;
  color: var(--muted-strong);
}

.lesson-section__number {
  display: inline-grid;
  width: 36px;
  height: 36px;
  place-items: center;
  margin-bottom: 14px;
  border-radius: 11px;
  background: var(--teal-soft);
  color: var(--teal-strong);
  font-family: var(--font-code);
  font-size: 11px;
  font-weight: 900;
}

.lesson-objectives,
.lesson-key-points,
.lesson-workshop,
.lesson-recap {
  min-width: 0;
  padding: clamp(21px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.lesson-objectives {
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--blue-soft) 74%, var(--surface)), var(--surface));
  border-color: color-mix(in srgb, var(--blue) 25%, var(--line));
}

.lesson-objectives__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(22px, 4vw, 42px);
  align-items: start;
}

.lesson-objectives__grid h3 {
  margin-top: 0;
}

.lesson-objectives__grid > div {
  min-width: 0;
}

.lesson-objectives h2,
.lesson-objectives h3,
.lesson-key-points h3,
.lesson-workshop h2,
.lesson-workshop h3,
.lesson-recap h2,
.lesson-recap h3 {
  margin: 0 0 14px;
  color: var(--ink-strong);
  font-size: clamp(1.2rem, 2.5vw, 1.55rem);
  letter-spacing: -0.025em;
}

.lesson-objectives ul,
.lesson-key-points ul,
.lesson-recap ul {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.lesson-objectives li:not(.check-item),
.lesson-key-points li:not(.check-item),
.lesson-recap li:not(.check-item) {
  position: relative;
  padding-left: 25px;
  color: var(--muted-strong);
}

.lesson-objectives li:not(.check-item)::before,
.lesson-key-points li:not(.check-item)::before,
.lesson-recap li:not(.check-item)::before {
  position: absolute;
  top: 0.25em;
  left: 0;
  display: grid;
  width: 17px;
  height: 17px;
  place-items: center;
  border-radius: 50%;
  background: color-mix(in srgb, var(--blue) 16%, var(--surface));
  color: var(--blue);
  content: "✓";
  font-size: 10px;
  font-weight: 900;
}

.lesson-key-points {
  margin-top: 22px;
  border-color: color-mix(in srgb, var(--amber) 26%, var(--line));
  background: color-mix(in srgb, var(--amber-soft) 52%, var(--surface));
}

.lesson-key-points > strong {
  display: block;
  margin-bottom: 11px;
  color: var(--amber);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.lesson-key-points li:not(.check-item)::before {
  background: color-mix(in srgb, var(--amber) 16%, var(--surface));
  color: var(--amber);
  content: "•";
}

.lesson-example {
  min-width: 0;
  overflow: hidden;
  margin-top: 23px;
  border: 1px solid color-mix(in srgb, var(--teal) 24%, var(--line));
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--teal-soft) 34%, var(--surface));
}

.lesson-example > :not(pre):not(.code-block):not(.lesson-result) {
  margin-right: 21px;
  margin-left: 21px;
}

.lesson-example > :first-child:not(pre):not(.code-block) {
  margin-top: 19px;
}

.lesson-example h3,
.lesson-example h4 {
  margin-bottom: 6px;
  color: var(--teal-strong);
  font-size: 0.98rem;
}

.lesson-example p {
  margin-top: 0;
  margin-bottom: 15px;
  font-size: 13px;
}

.lesson-example pre,
.lesson-example .code-block {
  max-width: 100%;
  margin: 16px 0 0;
  border-right: 0;
  border-bottom: 0;
  border-left: 0;
  border-radius: 0;
}

.lesson-example > pre {
  overflow-x: auto;
  padding: 20px;
  background: #10211b;
  color: #e8f2ec;
  font-family: var(--font-code);
  font-size: 12px;
  line-height: 1.65;
  white-space: pre;
  tab-size: 4;
}

.lesson-result {
  display: grid;
  gap: 3px;
  margin: 0;
  padding: 14px 20px;
  border-top: 1px solid color-mix(in srgb, var(--green) 25%, var(--line));
  background: color-mix(in srgb, var(--green-soft) 70%, var(--surface));
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
}

.lesson-result > strong {
  color: var(--green);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.lesson-result > p {
  margin: 0;
  color: var(--green);
  font-size: 12px;
}

.lesson-workshop {
  border-color: color-mix(in srgb, var(--accent) 27%, var(--line));
  background:
    radial-gradient(circle at 100% 0, color-mix(in srgb, var(--accent) 10%, transparent), transparent 35%),
    var(--surface);
}

.lesson-workshop > p {
  color: var(--muted-strong);
}

.lesson-steps {
  display: grid;
  gap: 11px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.lesson-steps li {
  position: relative;
  min-height: 40px;
  padding: 8px 10px 8px 48px;
  color: var(--muted-strong);
}

.lesson-steps li > span {
  position: absolute;
  top: 3px;
  left: 0;
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--accent) 26%, var(--line));
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-family: var(--font-code);
  font-size: 10px;
  font-weight: 900;
}

.lesson-steps li > p {
  margin: 0;
}

.exercise-level-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  align-items: stretch;
}

.exercise-level {
  --exercise-tone: var(--teal);
  --exercise-soft: var(--teal-soft);
  min-width: 0;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--exercise-tone) 27%, var(--line));
  border-top: 4px solid var(--exercise-tone);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--exercise-soft) 25%, var(--surface));
}

.exercise-level--bronze {
  --exercise-tone: #7b4317;
  --exercise-soft: #f2e3d3;
}

.exercise-level--argent {
  --exercise-tone: #64727b;
  --exercise-soft: #e7ebee;
}

.exercise-level--or {
  --exercise-tone: #765000;
  --exercise-soft: #f7ebc9;
}

html[data-theme="dark"] .exercise-level--bronze {
  --exercise-tone: #dfa66e;
  --exercise-soft: #3d2d20;
}

html[data-theme="dark"] .exercise-level--argent {
  --exercise-tone: #b9c5cc;
  --exercise-soft: #29343a;
}

html[data-theme="dark"] .exercise-level--or {
  --exercise-tone: #ebc866;
  --exercise-soft: #423719;
}

.exercise-level > h3,
.exercise-level > header {
  margin: 0;
  padding: 15px 17px;
  border-bottom: 1px solid color-mix(in srgb, var(--exercise-tone) 20%, var(--line));
  color: var(--exercise-tone);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.exercise-level > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.exercise-level > header small {
  color: var(--muted);
  font-size: 9px;
  font-weight: 750;
  letter-spacing: 0;
  text-transform: none;
}

.exercise-level > header h3 {
  margin: 0;
  color: inherit;
  font-size: inherit;
}

.exercise-card {
  min-width: 0;
  padding: 18px 17px;
}

.exercise-card + .exercise-card {
  border-top: 1px solid color-mix(in srgb, var(--exercise-tone) 17%, var(--line));
}

.exercise-card h4,
.exercise-card h3 {
  margin: 0 0 9px;
  color: var(--ink-strong);
  font-size: 0.98rem;
  letter-spacing: -0.012em;
}

.exercise-card__number,
.quiz-card__number {
  display: block;
  margin-bottom: 7px;
  color: var(--muted);
  font-family: var(--font-code);
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.exercise-card p {
  margin: 0 0 11px;
  color: var(--muted-strong);
  font-size: 13px;
}

.exercise-card p:last-child {
  margin-bottom: 0;
}

.solution-details {
  overflow: hidden;
  margin-top: 13px;
  border: 1px solid color-mix(in srgb, var(--exercise-tone, var(--teal)) 22%, var(--line));
  border-radius: 10px;
  background: var(--surface);
}

.solution-details summary {
  position: relative;
  padding: 10px 34px 10px 12px;
  color: var(--exercise-tone, var(--teal-strong));
  cursor: pointer;
  font-size: 11px;
  font-weight: 850;
  list-style: none;
}

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

.solution-details summary::after {
  position: absolute;
  top: 50%;
  right: 12px;
  content: "+";
  font-size: 17px;
  font-weight: 500;
  line-height: 1;
  transform: translateY(-50%);
}

.solution-details[open] summary {
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--exercise-soft, var(--teal-soft)) 52%, var(--surface));
}

.solution-details[open] summary::after {
  content: "−";
}

.solution-details > :not(summary) {
  margin: 0;
  padding: 12px;
  color: var(--muted-strong);
  font-size: 12px;
}

.solution-text {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.solution-details > .code-block {
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
}

.solution-details pre {
  max-width: 100%;
  overflow-x: auto;
  background: #10211b;
  color: #e8f2ec;
  font-family: var(--font-code);
  line-height: 1.6;
  white-space: pre;
}

.quiz-list {
  display: grid;
  gap: 15px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: quiz-question;
}

.quiz-progress {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px 12px;
  margin: 0 0 15px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--surface-muted);
  color: var(--muted-strong);
  font-size: 11px;
}

.quiz-progress > span {
  margin-right: auto;
  font-weight: 700;
}

.quiz-progress > strong {
  color: var(--ink-strong);
}

.quiz-progress > em {
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--green-soft);
  color: var(--green);
  font-style: normal;
  font-weight: 800;
}

.quiz-card {
  min-width: 0;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  counter-increment: quiz-question;
}

.quiz-card > h3,
.quiz-card legend {
  margin: 0 0 14px;
  color: var(--ink-strong);
  font-size: 0.98rem;
  font-weight: 800;
}

.quiz-card fieldset {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.quiz-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
}

.quiz-option {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 46px;
  align-items: center;
  gap: 9px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--surface-raised);
  color: var(--muted-strong);
  cursor: pointer;
  font-size: 12px;
  font-weight: 680;
  line-height: 1.4;
  text-align: left;
  overflow-wrap: anywhere;
  transition: border-color 150ms ease, background 150ms ease, color 150ms ease, transform 150ms ease;
}

.quiz-option:hover:not(:disabled):not([aria-disabled="true"]) {
  border-color: var(--teal);
  background: var(--teal-soft);
  color: var(--teal-strong);
  transform: translateY(-1px);
}

.quiz-option > span {
  display: grid;
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--surface);
  color: var(--muted);
  font-family: var(--font-code);
  font-size: 9px;
  font-weight: 900;
}

.quiz-option.is-correct {
  border-color: color-mix(in srgb, var(--green) 55%, var(--line));
  background: var(--green-soft);
  color: var(--green);
}

.quiz-option.is-correct > span {
  border-color: var(--green);
  background: var(--green);
  color: #fff;
}

.quiz-option.is-correct > span {
  font-size: 0;
}

.quiz-option.is-correct > span::after {
  content: "✓";
  font-size: 10px;
}

.quiz-option.is-wrong {
  border-color: color-mix(in srgb, var(--danger) 55%, var(--line));
  background: var(--danger-soft);
  color: var(--danger);
}

.quiz-option.is-wrong > span {
  border-color: var(--danger);
  background: var(--danger);
  color: #fff;
}

.quiz-option.is-wrong > span {
  font-size: 0;
}

.quiz-option.is-wrong > span::after {
  content: "×";
  font-size: 12px;
}

.quiz-option:disabled,
.quiz-option[aria-disabled="true"] {
  cursor: default;
}

.quiz-option:disabled:not(.is-correct):not(.is-wrong),
.quiz-option[aria-disabled="true"]:not(.is-correct):not(.is-wrong) {
  opacity: 0.62;
}

.quiz-feedback {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 13px 0 0;
  padding: 11px 13px;
  border-left: 3px solid var(--blue);
  border-radius: 0 9px 9px 0;
  background: var(--blue-soft);
  color: var(--blue);
  font-size: 12px;
  font-weight: 650;
}

.quiz-feedback.is-correct,
.quiz-feedback[data-state="correct"] {
  border-color: var(--green);
  background: var(--green-soft);
  color: var(--green);
}

.quiz-feedback.is-wrong,
.quiz-feedback[data-state="wrong"] {
  border-color: var(--danger);
  background: var(--danger-soft);
  color: var(--danger);
}

.lesson-recap {
  border-color: color-mix(in srgb, var(--green) 28%, var(--line));
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--green-soft) 75%, var(--surface)), var(--surface));
}

.lesson-recap li:not(.check-item)::before {
  background: color-mix(in srgb, var(--green) 17%, var(--surface));
  color: var(--green);
}

.lesson-bottom-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 32px;
}

.lesson-bottom-nav a,
.lesson-bottom-nav button {
  display: grid;
  min-width: 0;
  min-height: 76px;
  align-content: center;
  padding: 15px 17px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink-strong);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 800;
  text-align: left;
  text-decoration: none;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.lesson-bottom-nav a:last-child,
.lesson-bottom-nav button:last-child {
  text-align: right;
}

.lesson-bottom-nav a:hover,
.lesson-bottom-nav button:hover {
  border-color: var(--teal);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.lesson-bottom-nav small,
.lesson-bottom-nav span {
  display: block;
  margin-bottom: 3px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.lesson-missing {
  display: grid;
  min-height: 48vh;
  place-items: center;
  align-content: center;
  gap: 10px;
  padding: clamp(30px, 7vw, 72px);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--surface);
  color: var(--muted);
  text-align: center;
}

.lesson-missing::before {
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  margin-bottom: 4px;
  border-radius: 18px;
  background: var(--surface-muted);
  color: var(--muted-strong);
  content: "…";
  font-family: var(--font-code);
  font-size: 23px;
  font-weight: 900;
}

.lesson-missing h1,
.lesson-missing h2,
.lesson-missing strong {
  margin: 0;
  color: var(--ink-strong);
}

.lesson-missing p {
  max-width: 55ch;
  margin: 0;
}

@media (max-width: 1120px) {
  .lesson-layout {
    grid-template-columns: minmax(170px, 196px) minmax(0, 1fr);
    gap: 24px;
  }

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

@media (max-width: 900px) {
  .lesson-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .lesson-toc {
    position: static;
    max-height: none;
    overflow: hidden;
  }

  .lesson-toc__nav {
    display: flex;
    margin-inline: -4px;
    padding: 0 4px 3px;
    overflow-x: auto;
    scrollbar-width: thin;
  }

  .lesson-toc__nav a,
  .lesson-toc__nav button {
    flex: 0 0 auto;
    width: auto;
    max-width: 235px;
    padding: 9px 12px;
    border: 1px solid var(--line);
    white-space: nowrap;
  }

  .lesson-toc__nav a::before,
  .lesson-toc__nav button::before {
    display: none;
  }
}

@media (max-width: 680px) {
  .lesson-back {
    margin-bottom: 12px;
  }

  .lesson-hero {
    padding: 25px 21px;
    border-radius: 19px;
  }

  .lesson-hero::after {
    top: -150px;
    right: -145px;
  }

  .lesson-hero__top {
    display: block;
  }

  .lesson-hero h1 {
    max-width: none;
    font-size: clamp(2rem, 11.5vw, 3rem);
  }

  .lesson-progress-status {
    width: 100%;
    margin-top: 21px;
  }

  .lesson-hero__meta {
    gap: 6px;
    margin-top: 21px;
  }

  .lesson-hero__meta > * {
    min-height: 29px;
    padding-inline: 8px;
    font-size: 10px;
  }

  .lesson-layout {
    gap: 18px;
    margin-top: 24px;
  }

  .lesson-toc {
    padding: 14px;
    border-radius: 13px;
  }

  .lesson-section {
    padding: 22px 18px;
    border-radius: 17px;
  }

  .lesson-section h2 {
    font-size: 1.55rem;
  }

  .lesson-objectives,
  .lesson-key-points,
  .lesson-workshop,
  .lesson-recap {
    padding: 19px 17px;
    border-radius: 13px;
  }

  .lesson-example > :not(pre):not(.code-block):not(.lesson-result) {
    margin-right: 16px;
    margin-left: 16px;
  }

  .lesson-example > pre,
  .lesson-example .code-block pre,
  .solution-details pre {
    overflow-x: hidden;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  .exercise-level-grid,
  .quiz-options,
  .lesson-bottom-nav {
    grid-template-columns: minmax(0, 1fr);
  }

  .lesson-objectives__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .lesson-bottom-nav a:last-child,
  .lesson-bottom-nav button:last-child {
    text-align: left;
  }
}

@media (max-width: 390px) {
  .lesson-page {
    overflow-wrap: anywhere;
  }

  .lesson-hero,
  .lesson-section {
    margin-inline: 0;
  }

  .lesson-hero {
    padding: 22px 17px;
  }

  .lesson-section {
    padding: 20px 15px;
  }

  .lesson-objectives,
  .lesson-key-points,
  .lesson-workshop,
  .lesson-recap,
  .quiz-card {
    padding: 17px 14px;
  }

  .lesson-steps li {
    padding-right: 0;
  }

  .exercise-card {
    padding-inline: 14px;
  }

  .quiz-option {
    padding-inline: 10px;
  }
}

@media print {
  .lesson-page {
    --lesson-reading-width: none;
    color: #111;
  }

  .lesson-back,
  .lesson-toc,
  .lesson-progress-status,
  .lesson-bottom-nav,
  .quiz-feedback {
    display: none !important;
  }

  .lesson-hero {
    margin-bottom: 8mm;
    padding: 8mm;
    border: 1px solid #999;
    background: #fff !important;
    box-shadow: none;
  }

  .lesson-hero::after {
    display: none;
  }

  .lesson-hero h1,
  .lesson-hero p,
  .lesson-hero__meta > * {
    color: #111;
  }

  .lesson-hero__meta > * {
    border-color: #aaa;
    background: #fff;
  }

  .lesson-layout {
    display: block;
    margin-top: 0;
  }

  .lesson-article > * + * {
    margin-top: 5mm;
  }

  .lesson-section,
  .lesson-objectives,
  .lesson-key-points,
  .lesson-workshop,
  .exercise-level,
  .quiz-card,
  .lesson-recap,
  .lesson-missing {
    border-color: #aaa;
    background: #fff !important;
    box-shadow: none;
  }

  .lesson-section {
    padding: 7mm;
  }

  .lesson-section,
  .lesson-objectives,
  .lesson-key-points,
  .lesson-example,
  .lesson-workshop,
  .exercise-level,
  .quiz-card,
  .lesson-recap {
    break-inside: avoid;
  }

  .lesson-example,
  .solution-details {
    border-color: #aaa;
    background: #fff;
  }

  .lesson-example > pre,
  .lesson-example .code-block,
  .lesson-example .code-block pre,
  .solution-details pre {
    overflow: visible;
    border-color: #aaa;
    background: #f3f3f3 !important;
    color: #111;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
  }

  .lesson-result,
  .quiz-option,
  .quiz-option.is-correct,
  .quiz-option.is-wrong {
    border-color: #aaa;
    background: #fff;
    color: #111;
  }

  .exercise-level-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 3mm;
  }

  .exercise-level {
    border-top-color: #555;
  }

  .solution-details:not([open]) > :not(summary) {
    display: block !important;
  }

  .solution-details summary::after {
    display: none;
  }

  .solution-details > :not(summary) {
    border-top: 1px solid #bbb;
  }

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

  .quiz-option:disabled,
  .quiz-option[aria-disabled="true"] {
    opacity: 1;
  }
}

/* ================================================================
   Passerelle Python → C/C++
   ================================================================ */

.bridge-phase-0a { --bridge-color: #0b675d; --bridge-soft: #dff1ec; }
.bridge-phase-0b { --bridge-color: #285f91; --bridge-soft: #e4edf8; }
.bridge-phase-1 { --bridge-color: #66519b; --bridge-soft: #eee9f8; }
.bridge-phase-2 { --bridge-color: #80520b; --bridge-soft: #fbefd7; }
.bridge-phase-3 { --bridge-color: #914f70; --bridge-soft: #f8e9f0; }
.bridge-phase-4 { --bridge-color: #9a4d18; --bridge-soft: #fae9dc; }
.bridge-phase-5 { --bridge-color: #34784f; --bridge-soft: #e3f0e7; }
.bridge-phase-6 { --bridge-color: #a73e37; --bridge-soft: #fae8e5; }

html[data-theme="dark"] .bridge-phase-0a { --bridge-color: #7bd3c7; --bridge-soft: #173a34; }
html[data-theme="dark"] .bridge-phase-0b { --bridge-color: #8dbbe7; --bridge-soft: #1e3348; }
html[data-theme="dark"] .bridge-phase-1 { --bridge-color: #b9a7ea; --bridge-soft: #312942; }
html[data-theme="dark"] .bridge-phase-2 { --bridge-color: #ebc16e; --bridge-soft: #3e321e; }
html[data-theme="dark"] .bridge-phase-3 { --bridge-color: #e1a6c2; --bridge-soft: #402a35; }
html[data-theme="dark"] .bridge-phase-4 { --bridge-color: #efa573; --bridge-soft: #432b1e; }
html[data-theme="dark"] .bridge-phase-5 { --bridge-color: #8dcc9f; --bridge-soft: #203a29; }
html[data-theme="dark"] .bridge-phase-6 { --bridge-color: #f1988f; --bridge-soft: #422521; }

.path-choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.path-choice {
  position: relative;
  display: grid;
  min-width: 0;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  gap: 18px;
  align-items: start;
  overflow: hidden;
  padding: clamp(24px, 4vw, 36px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.path-choice--bridge {
  background: linear-gradient(145deg, color-mix(in srgb, var(--teal-soft) 58%, var(--surface)), var(--surface) 72%);
}

.path-choice--deep {
  background: linear-gradient(145deg, color-mix(in srgb, var(--blue-soft) 56%, var(--surface)), var(--surface) 72%);
}

.path-choice__index {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: var(--surface-raised);
  color: var(--teal-strong);
  font-family: var(--font-code);
  font-size: 11px;
  font-weight: 900;
}

.path-choice h3 {
  margin: 7px 0 8px;
  color: var(--ink-strong);
  font-size: clamp(1.3rem, 2.4vw, 1.75rem);
  letter-spacing: -0.035em;
}

.path-choice p {
  margin: 0;
  color: var(--muted-strong);
  font-size: 14px;
}

.path-choice__progress {
  display: grid;
  width: 90px;
  gap: 7px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  text-align: right;
}

.path-choice__progress progress {
  width: 100%;
  height: 6px;
  border: 0;
  border-radius: 999px;
  background: var(--line);
  accent-color: var(--teal);
}

.path-choice > .button {
  grid-column: 2 / -1;
  justify-self: start;
}

.bridge-header {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 290px);
  gap: clamp(30px, 6vw, 76px);
  align-items: center;
  overflow: hidden;
  padding: clamp(32px, 6vw, 68px);
  border: 1px solid var(--line);
  border-radius: clamp(20px, 3vw, 32px);
  background:
    radial-gradient(circle at 94% 5%, color-mix(in srgb, var(--teal) 17%, transparent), transparent 31%),
    radial-gradient(circle at 6% 100%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 39%),
    var(--surface);
  box-shadow: var(--shadow-sm);
}

.bridge-header::after {
  position: absolute;
  top: -145px;
  right: -105px;
  width: 350px;
  height: 350px;
  border: 1px solid color-mix(in srgb, var(--teal) 21%, transparent);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.bridge-header__copy,
.bridge-header__progress {
  position: relative;
  z-index: 1;
}

.bridge-header h1 {
  max-width: 13ch;
  margin: 12px 0 18px;
  color: var(--ink-strong);
  font-size: clamp(2.6rem, 6vw, 5rem);
  font-weight: 850;
  letter-spacing: -0.06em;
  line-height: 0.98;
}

.bridge-header h1 em {
  color: var(--teal-strong);
  font-style: normal;
}

.bridge-header__copy > p {
  max-width: 66ch;
  margin: 0;
  color: var(--muted-strong);
  font-size: clamp(1rem, 1.8vw, 1.17rem);
}

.bridge-header__progress {
  display: grid;
  justify-items: center;
  gap: 18px;
  padding: 25px;
  border: 1px solid color-mix(in srgb, var(--teal) 26%, var(--line));
  border-radius: 22px;
  background: color-mix(in srgb, var(--surface-raised) 90%, transparent);
  box-shadow: var(--shadow-md);
}

.bridge-progress-ring {
  position: relative;
  display: grid;
  width: 150px;
  height: 150px;
  place-content: center;
  border-radius: 50%;
  background: conic-gradient(var(--teal) var(--bridge-progress), var(--line) 0);
  text-align: center;
}

.bridge-progress-ring::before {
  position: absolute;
  inset: 10px;
  border-radius: 50%;
  background: var(--surface);
  content: "";
}

.bridge-progress-ring > * {
  position: relative;
  z-index: 1;
}

.bridge-progress-ring strong {
  color: var(--ink-strong);
  font-size: 1.8rem;
  letter-spacing: -0.04em;
}

.bridge-progress-ring span {
  color: var(--muted);
  font-size: 10px;
  font-weight: 750;
}

.bridge-header__progress > p {
  display: grid;
  gap: 3px;
  margin: 0;
  color: var(--muted-strong);
  font-size: 12px;
  text-align: center;
}

.bridge-header__progress > p strong {
  color: var(--teal-strong);
  font-size: 10px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.bridge-roadmap {
  margin-top: clamp(38px, 6vw, 66px);
}

.bridge-roadmap__track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(8, minmax(108px, 1fr));
  gap: 9px;
  overflow-x: auto;
  padding: 14px 1px 8px;
  scrollbar-width: thin;
}

.bridge-roadmap__track::before {
  position: absolute;
  top: 39px;
  right: 5%;
  left: 5%;
  height: 1px;
  background: var(--line-strong);
  content: "";
}

.bridge-roadmap__node {
  position: relative;
  display: grid;
  min-width: 108px;
  min-height: 116px;
  justify-items: center;
  align-content: start;
  gap: 8px;
  padding: 4px 8px 12px;
  border: 0;
  background: transparent;
  color: var(--muted-strong);
  cursor: pointer;
  font: inherit;
  text-align: center;
}

.bridge-roadmap__node > span {
  position: relative;
  z-index: 1;
  display: grid;
  width: 50px;
  height: 50px;
  place-items: center;
  border: 2px solid color-mix(in srgb, var(--bridge-color) 55%, var(--line));
  border-radius: 16px;
  background: var(--surface);
  color: var(--bridge-color);
  box-shadow: 0 0 0 5px var(--bg);
  font-family: var(--font-code);
  font-size: 11px;
  font-weight: 900;
}

.bridge-roadmap__node.is-complete > span {
  background: var(--bridge-color);
  color: var(--surface);
}

.bridge-roadmap__node strong {
  color: var(--ink-strong);
  font-size: 11px;
  line-height: 1.25;
}

.bridge-roadmap__node small {
  color: var(--muted);
  font-family: var(--font-code);
  font-size: 9px;
}

.bridge-filters {
  margin-top: 34px;
}

.bridge-phase-list {
  display: grid;
  gap: clamp(48px, 8vw, 86px);
  margin-top: 42px;
}

.bridge-phase-section {
  min-width: 0;
}

.bridge-phase-section__header {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr) 150px;
  gap: 18px;
  align-items: start;
  margin-bottom: 22px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.bridge-phase-section__index {
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  border-radius: 18px;
  background: var(--bridge-soft);
  color: var(--bridge-color);
  font-family: var(--font-code);
  font-size: 15px;
  font-weight: 900;
}

.bridge-phase-section__header h2 {
  margin: 3px 0 5px;
  color: var(--ink-strong);
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  letter-spacing: -0.04em;
}

.bridge-phase-section__header p,
.bridge-phase-section__header span {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.bridge-phase-section__progress {
  display: grid;
  gap: 6px;
  justify-items: end;
  color: var(--muted);
  font-size: 10px;
}

.bridge-phase-section__progress strong {
  color: var(--bridge-color);
  font-size: 1.1rem;
}

.bridge-phase-section__progress progress {
  width: 100%;
  height: 7px;
  border: 0;
  border-radius: 999px;
  accent-color: var(--bridge-color);
}

.bridge-unit-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.bridge-unit-card {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 310px;
  flex-direction: column;
  padding: 19px;
  border: 1px solid var(--line);
  border-top: 4px solid color-mix(in srgb, var(--bridge-color) 75%, var(--line));
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.bridge-unit-card:hover {
  border-color: color-mix(in srgb, var(--bridge-color) 42%, var(--line));
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.bridge-unit-card.is-complete {
  background: linear-gradient(155deg, color-mix(in srgb, var(--bridge-soft) 34%, var(--surface)), var(--surface));
}

.bridge-unit-card__top,
.bridge-unit-card__footer,
.bridge-unit-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.bridge-unit-card__number,
.bridge-unit-card__phase {
  color: var(--bridge-color);
  font-family: var(--font-code);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.bookmark-button {
  display: grid;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  place-items: center;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface-raised);
  color: var(--muted);
  cursor: pointer;
}

.bookmark-button svg {
  width: 17px;
  fill: none;
  stroke: currentColor;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.bookmark-button:hover,
.bookmark-button.is-active {
  border-color: var(--bridge-color, var(--amber));
  background: var(--bridge-soft, var(--amber-soft));
  color: var(--bridge-color, var(--amber));
}

.bookmark-button.is-active svg {
  fill: currentColor;
}

.bridge-unit-card__phase {
  margin-top: 16px;
  color: var(--muted);
}

.bridge-unit-card h3 {
  margin: 7px 0 9px;
  color: var(--ink-strong);
  font-size: 1.14rem;
  letter-spacing: -0.025em;
  line-height: 1.23;
}

.bridge-unit-card h3 a {
  text-decoration: none;
}

.bridge-unit-card h3 a::after {
  position: absolute;
  inset: 0;
  content: "";
}

.bridge-unit-card .bookmark-button,
.bridge-unit-card .card-action {
  position: relative;
  z-index: 1;
}

.bridge-unit-card > p {
  display: -webkit-box;
  margin: 0;
  overflow: hidden;
  color: var(--muted-strong);
  font-size: 12px;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 4;
}

.bridge-unit-card__meta {
  justify-content: flex-start;
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: 17px;
}

.bridge-unit-card__meta span {
  padding: 4px 7px;
  border-radius: 7px;
  background: var(--surface-muted);
  color: var(--muted);
  font-size: 9px;
  font-weight: 750;
}

.bridge-unit-card__footer {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.phase-project-card {
  display: grid;
  grid-template-columns: 66px minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  margin-top: 15px;
  padding: 19px 22px;
  border: 1px dashed color-mix(in srgb, var(--bridge-color) 50%, var(--line));
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bridge-soft) 37%, var(--surface));
  color: var(--ink-strong);
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease;
}

.phase-project-card:hover {
  border-style: solid;
  border-color: var(--bridge-color);
  transform: translateY(-2px);
}

.phase-project-card__icon {
  display: grid;
  width: 62px;
  height: 62px;
  place-items: center;
  border-radius: 17px;
  border: 1px solid color-mix(in srgb, var(--bridge-color) 35%, var(--line));
  background: var(--surface);
  color: var(--ink-strong);
  font-family: var(--font-code);
  font-size: 8px;
  font-weight: 900;
}

.phase-project-card span,
.phase-project-card p {
  color: var(--muted-strong);
  font-size: 11px;
}

.phase-project-card h3 {
  margin: 3px 0;
  font-size: 1.14rem;
}

.phase-project-card p {
  margin: 0;
}

.phase-project-card > strong {
  color: var(--bridge-color);
  font-size: 12px;
}

.bridge-unit-page,
.bridge-project-page {
  --bridge-reading-width: 76ch;
  min-width: 0;
}

.bridge-unit-hero,
.bridge-project-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 30px;
  align-items: end;
  overflow: hidden;
  padding: clamp(28px, 5vw, 54px);
  border: 1px solid color-mix(in srgb, var(--bridge-color) 28%, var(--line));
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 100% 0, color-mix(in srgb, var(--bridge-color) 14%, transparent), transparent 34%),
    linear-gradient(140deg, color-mix(in srgb, var(--bridge-soft) 40%, var(--surface)), var(--surface) 64%);
  box-shadow: var(--shadow-sm);
}

.bridge-unit-hero h1,
.bridge-project-hero h1 {
  max-width: 17ch;
  margin: 10px 0 15px;
  color: var(--ink-strong);
  font-size: clamp(2.25rem, 5vw, 4.35rem);
  font-weight: 850;
  letter-spacing: -0.055em;
  line-height: 1;
}

.bridge-unit-hero__main > p,
.bridge-project-hero > div > p {
  max-width: 67ch;
  margin: 0;
  color: var(--muted-strong);
  font-size: clamp(0.98rem, 1.6vw, 1.1rem);
}

.bridge-unit-hero__meta,
.bridge-project-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 21px;
}

.bridge-unit-hero__meta span,
.bridge-project-skills span {
  padding: 5px 9px;
  border: 1px solid color-mix(in srgb, var(--bridge-color) 24%, var(--line));
  border-radius: 999px;
  background: color-mix(in srgb, var(--bridge-soft) 50%, var(--surface));
  color: var(--bridge-color);
  font-size: 10px;
  font-weight: 760;
}

.bridge-unit-hero__actions {
  display: grid;
  min-width: 190px;
  gap: 10px;
}

.bookmark-button--large {
  display: flex;
  width: auto;
  min-height: 44px;
  justify-content: center;
  gap: 8px;
  padding: 8px 13px;
}

.bookmark-button--large span {
  font-size: 11px;
  font-weight: 760;
}

.bridge-unit-layout {
  display: grid;
  grid-template-columns: minmax(195px, 232px) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 46px);
  align-items: start;
  margin-top: clamp(30px, 5vw, 52px);
}

.bridge-unit-sidebar {
  position: sticky;
  top: calc(var(--topbar-height) + 22px);
  display: grid;
  max-height: calc(100vh - var(--topbar-height) - 44px);
  gap: 14px;
  overflow-y: auto;
  scrollbar-width: thin;
}

.bridge-unit-sidebar > nav,
.bridge-prerequisites {
  display: grid;
  gap: 3px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.bridge-unit-sidebar strong {
  margin-bottom: 8px;
  color: var(--ink-strong);
  font-size: 10px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.bridge-unit-sidebar nav button {
  display: flex;
  width: 100%;
  align-items: flex-start;
  gap: 7px;
  padding: 7px 8px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--muted-strong);
  cursor: pointer;
  font: inherit;
  font-size: 10px;
  font-weight: 670;
  line-height: 1.35;
  text-align: left;
}

.bridge-unit-sidebar nav button:hover {
  background: var(--bridge-soft);
  color: var(--bridge-color);
}

.bridge-unit-sidebar nav button span {
  color: var(--bridge-color);
  font-family: var(--font-code);
  font-size: 8px;
  font-weight: 900;
}

.bridge-prerequisites a {
  display: grid;
  gap: 1px;
  padding: 8px;
  border-radius: 8px;
  color: var(--muted-strong);
  font-size: 10px;
  font-weight: 680;
  text-decoration: none;
}

.bridge-prerequisites a:hover {
  background: var(--surface-muted);
  color: var(--ink-strong);
}

.bridge-prerequisites a span {
  color: var(--bridge-color);
  font-family: var(--font-code);
  font-size: 8px;
}

.bridge-prerequisites p {
  margin: 0;
  color: var(--muted);
  font-size: 10px;
}

.bridge-unit-article {
  display: grid;
  min-width: 0;
  gap: 22px;
}

.bridge-reading-section {
  min-width: 0;
  scroll-margin-top: calc(var(--topbar-height) + 24px);
  padding: clamp(25px, 4vw, 42px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.bridge-reading-section > h2,
.bridge-notes h2 {
  max-width: 24ch;
  margin: 0 0 19px;
  color: var(--ink-strong);
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.bridge-reading-section > p,
.bridge-notes p {
  max-width: var(--bridge-reading-width);
  margin: 0 0 14px;
  color: var(--muted-strong);
}

.bridge-reading-section__number {
  display: grid;
  width: 37px;
  height: 37px;
  place-items: center;
  margin-bottom: 14px;
  border-radius: 11px;
  background: var(--bridge-soft);
  color: var(--bridge-color);
  font-family: var(--font-code);
  font-size: 10px;
  font-weight: 900;
}

.bridge-why {
  border-color: color-mix(in srgb, var(--bridge-color) 28%, var(--line));
  background: linear-gradient(145deg, color-mix(in srgb, var(--bridge-soft) 58%, var(--surface)), var(--surface));
}

.bridge-analogy {
  margin: 22px 0 0;
  padding: 17px 19px;
  border-left: 4px solid var(--bridge-color);
  border-radius: 0 12px 12px 0;
  background: color-mix(in srgb, var(--bridge-soft) 42%, var(--surface));
}

.bridge-analogy strong {
  display: block;
  margin-bottom: 5px;
  color: var(--bridge-color);
  font-size: 10px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.bridge-analogy p {
  margin: 0;
  color: var(--muted-strong);
  font-size: 13px;
}

.bridge-example {
  overflow: hidden;
  margin-top: 22px;
  border: 1px solid color-mix(in srgb, var(--bridge-color) 25%, var(--line));
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bridge-soft) 30%, var(--surface));
}

.bridge-example > :not(.code-block):not(.lesson-result) {
  margin-right: 20px;
  margin-left: 20px;
}

.bridge-example > .eyebrow {
  display: block;
  margin-top: 18px;
  color: var(--bridge-color);
}

.bridge-example h3 {
  margin-top: 7px;
  margin-bottom: 6px;
  color: var(--ink-strong);
}

.bridge-example p {
  color: var(--muted-strong);
  font-size: 13px;
}

.bridge-example .code-block {
  margin: 16px 0 0;
  border-right: 0;
  border-bottom: 0;
  border-left: 0;
  border-radius: 0;
}

.bridge-guided-steps {
  display: grid;
  gap: 12px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.bridge-guided-steps li {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--surface-muted);
}

.bridge-guided-steps li > span {
  display: grid;
  min-height: 40px;
  place-items: center;
  border-radius: 11px;
  background: var(--bridge-color);
  color: var(--surface);
  font-family: var(--font-code);
  font-size: 9px;
  font-weight: 900;
}

.bridge-guided-steps h3 {
  margin: 0 0 5px;
  color: var(--ink-strong);
  font-size: 1rem;
}

.bridge-guided-steps p {
  margin: 0;
  color: var(--muted-strong);
  font-size: 13px;
}

.bridge-command-list {
  display: grid;
  gap: 16px;
}

.bridge-command-list article {
  min-width: 0;
}

.bridge-command-list h3 {
  margin: 0 0 3px;
  color: var(--ink-strong);
}

.bridge-command-list p {
  margin: 0;
  color: var(--muted-strong);
  font-size: 13px;
}

.bridge-error-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 12px;
}

.bridge-error-grid article {
  padding: 17px;
  border: 1px solid color-mix(in srgb, var(--danger) 24%, var(--line));
  border-radius: 13px;
  background: color-mix(in srgb, var(--danger-soft) 38%, var(--surface));
}

.bridge-error-grid article > span {
  color: var(--danger);
  font-family: var(--font-code);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.bridge-error-grid h3 {
  margin: 6px 0 10px;
  color: var(--ink-strong);
  font-size: 0.98rem;
}

.bridge-error-grid p {
  margin: 7px 0 0;
  color: var(--muted-strong);
  font-size: 12px;
}

.bridge-practice {
  border-color: color-mix(in srgb, var(--bridge-color) 35%, var(--line));
  background: linear-gradient(145deg, color-mix(in srgb, var(--bridge-soft) 43%, var(--surface)), var(--surface));
}

.bridge-practice__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.difficulty-chip {
  flex: 0 0 auto;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--bridge-color);
  color: var(--surface);
  font-size: 9px;
  font-weight: 850;
  text-transform: uppercase;
}

.bridge-practice__prompt {
  padding: 17px 19px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  color: var(--ink-strong) !important;
  font-weight: 630;
}

.bridge-criteria {
  margin: 17px 0;
}

.bridge-criteria > strong {
  display: block;
  margin-bottom: 7px;
  color: var(--ink-strong);
  font-size: 11px;
}

.bridge-criteria ul {
  margin: 0;
  color: var(--muted-strong);
  font-size: 13px;
}

.bridge-notes {
  display: grid;
  gap: 16px;
  border-color: color-mix(in srgb, var(--blue) 26%, var(--line));
  background: color-mix(in srgb, var(--blue-soft) 28%, var(--surface));
}

.bridge-notes label {
  color: var(--ink-strong);
  font-size: 11px;
  font-weight: 780;
}

.bridge-notes textarea {
  width: 100%;
  min-height: 150px;
  resize: vertical;
  padding: 15px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: var(--surface-raised);
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  line-height: 1.6;
}

.bridge-notes textarea:focus {
  border-color: var(--blue);
  outline: 3px solid color-mix(in srgb, var(--blue) 18%, transparent);
}

.bridge-notes__status {
  justify-self: end;
  color: var(--muted);
  font-size: 10px;
}

.bridge-recap {
  border-color: color-mix(in srgb, var(--green) 30%, var(--line));
  background: linear-gradient(145deg, color-mix(in srgb, var(--green-soft) 55%, var(--surface)), var(--surface));
}

.bridge-recap .button {
  margin-top: 18px;
}

.bridge-project-cta {
  display: block;
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid var(--bridge-color);
  border-radius: var(--radius-lg);
  background: var(--bridge-color);
  color: var(--surface);
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.bridge-project-cta:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.bridge-project-cta span {
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.bridge-project-cta h2 {
  margin: 7px 0;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
}

.bridge-project-cta p {
  margin: 0 0 15px;
  opacity: 0.9;
}

.bridge-project-hero {
  align-items: center;
}

.bridge-project-hero__status {
  display: grid;
  width: 180px;
  gap: 6px;
  padding: 18px;
  border: 1px solid color-mix(in srgb, var(--bridge-color) 32%, var(--line));
  border-radius: 16px;
  background: var(--surface);
  color: var(--muted);
  font-size: 10px;
}

.bridge-project-hero__status strong {
  color: var(--bridge-color);
  font-size: 1.8rem;
}

.bridge-project-hero__status progress {
  width: 100%;
  accent-color: var(--bridge-color);
}

.bridge-project-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(240px, 0.8fr);
  gap: 20px;
  align-items: start;
  margin-top: 24px;
}

.bridge-project-main,
.bridge-project-aside {
  display: grid;
  min-width: 0;
  gap: 20px;
}

.bridge-project-aside {
  position: sticky;
  top: calc(var(--topbar-height) + 22px);
}

.bridge-project-unit {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 9px;
  align-items: center;
  padding: 9px 0;
  border-top: 1px solid var(--line);
  color: var(--muted-strong);
  font-size: 11px;
  font-weight: 680;
  text-decoration: none;
}

.bridge-project-unit > span {
  display: grid;
  width: 26px;
  height: 26px;
  place-items: center;
  border-radius: 8px;
  background: var(--surface-muted);
  color: var(--muted);
  font-family: var(--font-code);
  font-size: 8px;
}

.bridge-project-unit.is-complete > span {
  background: var(--green);
  color: #fff;
}

@media (max-width: 1120px) {
  .path-choice { grid-template-columns: 42px minmax(0, 1fr); }
  .path-choice__progress { grid-column: 2; width: 100%; text-align: left; }
  .path-choice > .button { grid-column: 2; }
  .bridge-unit-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bridge-unit-layout { grid-template-columns: 190px minmax(0, 1fr); gap: 24px; }
}

@media (max-width: 900px) {
  .path-choice-grid,
  .bridge-header,
  .bridge-unit-hero,
  .bridge-project-hero,
  .bridge-unit-layout,
  .bridge-project-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .bridge-header__progress {
    grid-template-columns: auto minmax(0, 1fr);
    justify-items: start;
  }

  .bridge-progress-ring { width: 118px; height: 118px; }
  .bridge-unit-sidebar { position: static; max-height: none; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bridge-unit-sidebar nav { max-height: 240px; overflow-y: auto; }
  .bridge-unit-hero__actions { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bridge-project-aside { position: static; }
}

@media (max-width: 680px) {
  .path-choice { grid-template-columns: 38px minmax(0, 1fr); gap: 13px; padding: 22px 18px; }
  .path-choice__index { width: 38px; height: 38px; border-radius: 11px; }
  .bridge-header { padding: 26px 20px; }
  .bridge-header h1 { font-size: clamp(2.45rem, 13vw, 3.5rem); }
  .bridge-header__progress { grid-template-columns: minmax(0, 1fr); justify-items: center; }
  .bridge-phase-section__header { grid-template-columns: 50px minmax(0, 1fr); }
  .bridge-phase-section__index { width: 46px; height: 46px; border-radius: 14px; }
  .bridge-phase-section__progress { grid-column: 1 / -1; justify-items: start; }
  .bridge-phase-section__progress progress { max-width: 260px; }
  .bridge-unit-grid { grid-template-columns: minmax(0, 1fr); }
  .bridge-unit-card { min-height: 0; }
  .phase-project-card { grid-template-columns: 48px minmax(0, 1fr); padding: 17px; }
  .phase-project-card__icon { width: 46px; height: 46px; border-radius: 13px; font-size: 7px; }
  .phase-project-card > strong { grid-column: 2; }
  .bridge-unit-hero,
  .bridge-project-hero { padding: 25px 20px; }
  .bridge-unit-hero h1,
  .bridge-project-hero h1 { font-size: clamp(2rem, 11vw, 3rem); }
  .bridge-unit-hero__actions,
  .bridge-unit-sidebar { grid-template-columns: minmax(0, 1fr); }
  .bridge-reading-section { padding: 22px 18px; border-radius: 17px; }
  .bridge-error-grid { grid-template-columns: minmax(0, 1fr); }
  .bridge-guided-steps li { grid-template-columns: 40px minmax(0, 1fr); padding: 12px; }
  .bridge-practice__head { display: block; }
  .difficulty-chip { display: inline-flex; margin-bottom: 14px; }
  .bridge-project-hero__status { width: 100%; }
}

@media (max-width: 390px) {
  .path-choice { grid-template-columns: minmax(0, 1fr); }
  .path-choice__progress,
  .path-choice > .button { grid-column: 1; }
  .bridge-header { padding-inline: 17px; }
  .bridge-reading-section { padding-inline: 15px; overflow-wrap: anywhere; }
  .bridge-guided-steps li { grid-template-columns: minmax(0, 1fr); }
  .bridge-guided-steps li > span { width: 44px; }
}

@media print {
  .bridge-header__progress,
  .bridge-roadmap,
  .bridge-filters,
  .bookmark-button,
  .bridge-unit-sidebar,
  .bridge-unit-hero__actions,
  .bridge-notes,
  .bridge-project-aside,
  .bridge-project-hero__status,
  .phase-project-card {
    display: none !important;
  }

  .bridge-header,
  .bridge-unit-hero,
  .bridge-project-hero,
  .bridge-reading-section,
  .bridge-unit-card,
  .bridge-project-cta {
    border-color: #999;
    background: #fff !important;
    color: #111;
    box-shadow: none;
  }

  .bridge-unit-layout,
  .bridge-project-layout { display: block; margin-top: 5mm; }
  .bridge-unit-article { gap: 5mm; }
  .bridge-reading-section,
  .bridge-example,
  .bridge-error-grid article { break-inside: avoid; }
  .bridge-project-cta h2,
  .bridge-project-cta p,
  .bridge-project-cta strong,
  .bridge-project-cta span { color: #111; }
}

/* ================================================================
   Parcours simplifie — index et lecture essentielle
   ================================================================ */

.route-anchor {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.bridge-simple-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px clamp(28px, 5vw, 64px);
  align-items: center;
  padding: clamp(26px, 5vw, 48px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 100% 0, color-mix(in srgb, var(--teal-soft) 68%, transparent), transparent 38%),
    var(--surface);
  box-shadow: var(--shadow-sm);
}

.bridge-simple-header > div:first-child {
  min-width: 0;
  max-width: 690px;
}

.bridge-simple-header h1 {
  margin: 9px 0 12px;
  color: var(--ink-strong);
  font-size: clamp(2.25rem, 5.5vw, 4.15rem);
  font-weight: 850;
  letter-spacing: -0.055em;
  line-height: 1;
}

.bridge-simple-header p {
  max-width: 58ch;
  margin: 0;
  color: var(--muted-strong);
  font-size: clamp(0.96rem, 1.6vw, 1.08rem);
}

.bridge-simple-header > .button {
  max-width: 350px;
  text-align: center;
}

.bridge-simple-progress {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: auto minmax(160px, 1fr);
  gap: 20px;
  align-items: center;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.bridge-simple-progress > div {
  display: flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
}

.bridge-simple-progress strong {
  color: var(--teal-strong);
  font-family: var(--font-code);
  font-size: 0.92rem;
}

.bridge-simple-progress span {
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 700;
}

.bridge-simple-progress progress {
  width: 100%;
  height: 8px;
  overflow: hidden;
  border: 0;
  border-radius: 999px;
  background: var(--line);
  accent-color: var(--teal);
}

.bridge-simple-progress progress::-webkit-progress-bar {
  border-radius: inherit;
  background: var(--line);
}

.bridge-simple-progress progress::-webkit-progress-value {
  border-radius: inherit;
  background: var(--teal);
}

.bridge-simple-progress progress::-moz-progress-bar {
  border-radius: inherit;
  background: var(--teal);
}

.bridge-simple-tabs {
  display: flex;
  width: fit-content;
  max-width: 100%;
  gap: 4px;
  overflow-x: auto;
  margin: 24px 0 16px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--surface-muted);
  scrollbar-width: thin;
}

.bridge-simple-tabs button {
  display: inline-flex;
  min-height: 40px;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid transparent;
  border-radius: 9px;
  background: transparent;
  color: var(--muted-strong);
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 760;
  white-space: nowrap;
}

.bridge-simple-tabs button:hover {
  color: var(--ink-strong);
}

.bridge-simple-tabs button.is-active {
  border-color: var(--line);
  background: var(--surface-raised);
  color: var(--teal-strong);
  box-shadow: var(--shadow-sm);
}

.bridge-simple-tabs button span {
  padding: 2px 6px;
  border-radius: 999px;
  background: var(--line);
  color: inherit;
  font-family: var(--font-code);
  font-size: 0.65rem;
}

.bridge-simple-tabs button:focus-visible,
.optional-setup-banner > .button:focus-visible,
.bridge-mark-review:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--teal) 65%, white);
  outline-offset: 2px;
}

.bridge-simple-phase > summary:focus-visible,
.bridge-deep-dive > summary:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--teal) 65%, white);
  outline-offset: -4px;
}

.optional-setup-banner,
.setup-note {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 16px;
  padding: 14px 17px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--surface);
}

.optional-setup-banner > div {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 13px;
}

.optional-setup-banner > div > span {
  display: grid;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 10px;
  background: var(--teal-soft);
  color: var(--teal-strong);
}

.optional-setup-banner p,
.setup-note p {
  display: grid;
  gap: 1px;
  margin: 0;
  color: var(--ink);
  font-size: 0.82rem;
}

.optional-setup-banner small {
  color: var(--muted);
  font-size: 0.73rem;
}

.optional-setup-banner > .button {
  min-height: 38px;
  flex: 0 0 auto;
  padding: 7px 11px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: transparent;
  color: var(--teal-strong);
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 780;
}

.optional-setup-banner > .button:hover {
  border-color: var(--teal);
  background: var(--teal-soft);
}

.setup-note {
  justify-content: flex-start;
  background: color-mix(in srgb, var(--blue-soft) 34%, var(--surface));
}

.setup-note > span {
  flex: 0 0 auto;
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--blue);
  color: var(--surface);
  font-size: 0.62rem;
  font-weight: 850;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.setup-start-core {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 18px;
  padding: 18px;
  border: 1px solid color-mix(in srgb, var(--teal) 28%, var(--line));
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--teal-soft) 42%, var(--surface));
}

.setup-start-core > div {
  display: grid;
  gap: 3px;
}

.setup-start-core strong {
  color: var(--ink-strong);
}

.setup-start-core span {
  color: var(--muted);
  font-size: 0.82rem;
}

.bridge-simple-phase-list {
  display: grid;
  gap: 12px;
}

.bridge-simple-phase {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.bridge-simple-phase > summary {
  display: grid;
  min-height: 76px;
  grid-template-columns: 44px minmax(0, 1fr) auto 20px;
  gap: 14px;
  align-items: center;
  padding: 14px 18px;
  cursor: pointer;
  list-style: none;
}

.bridge-simple-phase > summary::-webkit-details-marker {
  display: none;
}

.bridge-simple-phase > summary:hover {
  background: color-mix(in srgb, var(--bridge-soft) 25%, var(--surface));
}

.bridge-simple-phase__number {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 12px;
  background: var(--bridge-soft);
  color: var(--bridge-color);
  font-family: var(--font-code);
  font-size: 0.7rem;
  font-weight: 900;
}

.bridge-simple-phase__title,
.bridge-simple-phase__progress {
  display: grid;
  min-width: 0;
  gap: 2px;
}

.bridge-simple-phase__title small,
.bridge-simple-phase__progress small {
  color: var(--muted);
  font-size: 0.64rem;
  font-weight: 750;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.bridge-simple-phase__title strong {
  overflow: hidden;
  color: var(--ink-strong);
  font-size: 0.98rem;
  line-height: 1.3;
  text-overflow: ellipsis;
}

.bridge-simple-phase__progress {
  justify-items: end;
  text-align: right;
}

.bridge-simple-phase__progress strong {
  color: var(--bridge-color);
  font-family: var(--font-code);
  font-size: 0.78rem;
}

.bridge-simple-phase__chevron {
  color: var(--muted);
  font-size: 1.1rem;
  transition: transform 160ms ease;
}

.bridge-simple-phase[open] .bridge-simple-phase__chevron {
  transform: rotate(180deg);
}

.bridge-unit-list {
  border-top: 1px solid var(--line);
}

.bridge-unit-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 52px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.bridge-unit-row--plain {
  grid-template-columns: minmax(0, 1fr);
}

.bridge-unit-row:last-child {
  border-bottom: 0;
}

.bridge-unit-row:hover {
  background: color-mix(in srgb, var(--bridge-soft) 23%, var(--surface));
}

.bridge-unit-row.is-complete {
  background: color-mix(in srgb, var(--green-soft) 28%, var(--surface));
}

.bridge-unit-row__main {
  display: grid;
  min-width: 0;
  min-height: 68px;
  grid-template-columns: 42px minmax(0, 1fr) 18px;
  gap: 13px;
  align-items: center;
  padding: 11px 10px 11px 18px;
  text-decoration: none;
}

.bridge-unit-row__status {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--bridge-color) 36%, var(--line));
  border-radius: 11px;
  background: var(--surface-raised);
  color: var(--bridge-color);
  font-family: var(--font-code);
  font-size: 0.66rem;
  font-weight: 900;
}

.bridge-unit-row__status.is-current {
  background: var(--bridge-soft);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--bridge-color) 12%, transparent);
}

.bridge-unit-row__status.is-complete,
.bridge-unit-row.is-complete .bridge-unit-row__status {
  border-color: var(--green);
  background: var(--green);
  color: var(--surface);
}

.bridge-unit-row__copy {
  display: grid;
  min-width: 0;
  gap: 3px;
}

.bridge-unit-row__copy small {
  color: var(--muted);
  font-size: 0.66rem;
  font-weight: 700;
}

.bridge-unit-row__copy strong {
  overflow: hidden;
  color: var(--ink-strong);
  font-size: 0.88rem;
  line-height: 1.3;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.bridge-unit-row__arrow {
  color: var(--muted);
  transition: color 150ms ease, transform 150ms ease;
}

.bridge-unit-row:hover .bridge-unit-row__arrow {
  color: var(--bridge-color);
  transform: translateX(2px);
}

.bridge-unit-row > .bookmark-button {
  justify-self: center;
}

.bridge-simple-project {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 13px;
  align-items: center;
  min-height: 56px;
  padding: 12px 19px;
  border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--bridge-soft) 30%, var(--surface));
  color: var(--ink-strong);
  text-decoration: none;
}

.bridge-simple-project > span:first-child {
  color: var(--bridge-color);
  font-size: 0.64rem;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.bridge-simple-project strong {
  min-width: 0;
  font-size: 0.84rem;
}

.bridge-simple-project > span:last-child {
  color: var(--bridge-color);
  transition: transform 150ms ease;
}

.bridge-simple-project:hover > span:last-child {
  transform: translateX(3px);
}

/* Lecture d'une notion */

.bridge-simple-lesson {
  width: min(100%, 900px);
  margin-inline: auto;
  --bridge-reading-width: 68ch;
}

.bridge-simple-topbar {
  display: flex;
  min-height: 44px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.bridge-simple-lesson__header {
  padding: clamp(24px, 4vw, 38px) 0 clamp(26px, 4vw, 36px);
  border-bottom: 1px solid var(--line);
}

.bridge-simple-lesson__header h1 {
  max-width: 19ch;
  margin: 9px 0 0;
  color: var(--ink-strong);
  font-size: clamp(2.1rem, 5.5vw, 3.65rem);
  font-weight: 850;
  letter-spacing: -0.052em;
  line-height: 1.02;
}

.bridge-simple-content {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

.bridge-simple-try {
  min-width: 0;
}

.bridge-simple-essential,
.bridge-simple-code,
.bridge-simple-exercise,
.bridge-deep-dive,
.bridge-simple-complete {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.bridge-simple-essential {
  padding: clamp(22px, 4vw, 32px);
  border-color: color-mix(in srgb, var(--bridge-color) 25%, var(--line));
  background: linear-gradient(145deg, color-mix(in srgb, var(--bridge-soft) 44%, var(--surface)), var(--surface) 68%);
}

.bridge-simple-essential .eyebrow,
.bridge-simple-code .eyebrow,
.bridge-simple-exercise .eyebrow {
  color: var(--bridge-color);
}

.bridge-simple-essential h2,
.bridge-simple-exercise h2 {
  margin: 8px 0 12px;
  color: var(--ink-strong);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.bridge-simple-lead {
  max-width: var(--bridge-reading-width);
  margin: 0;
  color: var(--muted-strong);
  font-size: 1rem;
}

.bridge-simple-essential ul {
  display: grid;
  gap: 9px;
  max-width: var(--bridge-reading-width);
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.bridge-simple-essential li {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 9px;
  align-items: start;
  color: var(--ink);
  font-size: 0.9rem;
}

.bridge-simple-essential li > span {
  display: grid;
  width: 21px;
  height: 21px;
  place-items: center;
  margin-top: 1px;
  border-radius: 50%;
  background: var(--bridge-color);
  color: var(--surface);
  font-size: 0.65rem;
  font-weight: 900;
}

.bridge-simple-code {
  overflow: hidden;
  padding: clamp(20px, 4vw, 26px);
}

.bridge-simple-code h3 {
  margin: 8px 0 6px;
  color: var(--ink-strong);
  font-size: 1.12rem;
  letter-spacing: -0.02em;
}

.bridge-simple-code > p {
  max-width: var(--bridge-reading-width);
  margin: 0;
  color: var(--muted-strong);
  font-size: 0.84rem;
}

.bridge-simple-code > .code-block {
  margin: 19px calc(clamp(20px, 4vw, 26px) * -1) 0;
  border-right: 0;
  border-left: 0;
  border-radius: 0;
}

.bridge-simple-code > .code-block:last-child {
  margin-bottom: calc(clamp(20px, 4vw, 26px) * -1);
  border-bottom: 0;
}

.bridge-simple-result {
  margin-top: 17px !important;
  color: var(--ink) !important;
}

.bridge-simple-exercise {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0 20px;
  padding: clamp(22px, 4vw, 30px);
  border-color: color-mix(in srgb, var(--bridge-color) 30%, var(--line));
}

.bridge-simple-exercise > p,
.bridge-simple-exercise > ul {
  grid-column: 1 / -1;
  max-width: var(--bridge-reading-width);
}

.bridge-simple-exercise > p {
  margin: 4px 0 14px;
  color: var(--ink);
  font-weight: 620;
}

.bridge-simple-exercise > ul {
  display: grid;
  gap: 5px;
  margin: 0;
  padding-left: 20px;
  color: var(--muted-strong);
  font-size: 0.84rem;
}

.bridge-simple-exercise .difficulty-chip {
  align-self: start;
  margin-top: 2px;
}

.bridge-deep-dive {
  overflow: hidden;
}

.bridge-deep-dive > summary {
  display: flex;
  min-height: 68px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 20px;
  cursor: pointer;
  list-style: none;
}

.bridge-deep-dive > summary::-webkit-details-marker {
  display: none;
}

.bridge-deep-dive > summary:hover {
  background: var(--surface-muted);
}

.bridge-deep-dive > summary > span:first-child {
  display: grid;
  gap: 2px;
}

.bridge-deep-dive > summary strong {
  color: var(--ink-strong);
  font-size: 0.93rem;
}

.bridge-deep-dive > summary small {
  color: var(--muted);
  font-size: 0.72rem;
}

.bridge-deep-dive > summary > span:last-child {
  display: grid;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 9px;
  background: var(--surface-muted);
  color: var(--bridge-color);
  font-size: 1.2rem;
  transition: transform 160ms ease;
}

.bridge-deep-dive[open] > summary > span:last-child {
  transform: rotate(45deg);
}

.bridge-deep-dive__content {
  border-top: 1px solid var(--line);
}

.bridge-deep-dive__content > section {
  min-width: 0;
  padding: clamp(21px, 4vw, 30px);
  border-bottom: 1px solid var(--line);
}

.bridge-deep-dive__content > section:last-child {
  border-bottom: 0;
}

.bridge-deep-dive__content > section > h2 {
  max-width: 26ch;
  margin: 0 0 14px;
  color: var(--ink-strong);
  font-size: clamp(1.15rem, 2.5vw, 1.5rem);
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.bridge-deep-dive__content > section > p,
.bridge-deep-dive__content > section > ul,
.bridge-deep-dive__content > section > ol {
  max-width: var(--bridge-reading-width);
  color: var(--muted-strong);
  font-size: 0.86rem;
}

.bridge-deep-dive__content > section > p {
  margin: 0 0 12px;
}

.bridge-deep-dive__content > section > p:last-child {
  margin-bottom: 0;
}

.bridge-answer {
  margin-top: 10px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface-muted);
}

.bridge-answer > strong {
  display: block;
  margin-bottom: 5px;
  color: var(--bridge-color);
  font-size: 0.69rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.bridge-answer > p {
  margin: 0;
  color: var(--muted-strong);
  font-size: 0.84rem;
}

.bridge-answer > ul {
  display: grid;
  gap: 5px;
  margin: 7px 0 0;
  padding-left: 18px;
  color: var(--muted-strong);
  font-size: 0.82rem;
}

.bridge-deep-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 9px;
}

.bridge-deep-links a {
  display: grid;
  gap: 3px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface-muted);
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 700;
  text-decoration: none;
}

.bridge-deep-links a:hover {
  border-color: var(--bridge-color);
}

.bridge-deep-links a span {
  color: var(--bridge-color);
  font-size: 0.62rem;
  font-weight: 850;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.bridge-deep-dive .bridge-notes {
  display: grid;
  gap: 12px;
  border: 0;
  border-radius: 0;
  background: color-mix(in srgb, var(--blue-soft) 24%, var(--surface));
  box-shadow: none;
}

.bridge-deep-dive .bridge-notes h2 {
  margin-bottom: 2px;
  font-size: clamp(1.15rem, 2.5vw, 1.5rem);
}

.bridge-deep-dive .bridge-notes textarea {
  min-height: 120px;
}

.bridge-simple-project--lesson {
  border: 1px solid color-mix(in srgb, var(--bridge-color) 24%, var(--line));
  border-radius: 13px;
  box-shadow: var(--shadow-sm);
}

.bridge-simple-complete {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px 20px;
  align-items: center;
  padding: clamp(20px, 4vw, 27px);
  border-color: color-mix(in srgb, var(--green) 25%, var(--line));
  background: linear-gradient(145deg, color-mix(in srgb, var(--green-soft) 42%, var(--surface)), var(--surface));
}

.bridge-simple-complete > div {
  display: grid;
  gap: 3px;
}

.bridge-simple-complete > div strong {
  color: var(--ink-strong);
  font-size: 0.98rem;
}

.bridge-simple-complete > div span {
  color: var(--muted);
  font-size: 0.76rem;
}

.bridge-simple-complete > .button {
  justify-self: end;
}

.bridge-mark-review {
  grid-column: 2;
  justify-self: end;
  padding: 3px 0;
  border: 0;
  background: transparent;
  color: var(--muted-strong);
  cursor: pointer;
  font-size: 0.72rem;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.bridge-mark-review:hover {
  color: var(--danger);
}

.bridge-simple-navigation {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.bridge-simple-navigation a {
  display: flex;
  min-height: 48px;
  align-items: center;
  padding: 11px 14px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--surface);
  color: var(--muted-strong);
  font-size: 0.78rem;
  font-weight: 720;
  line-height: 1.3;
  text-decoration: none;
}

.bridge-simple-navigation a:last-child {
  justify-content: flex-end;
  text-align: right;
}

.bridge-simple-navigation a:hover {
  border-color: var(--bridge-color);
  color: var(--bridge-color);
}

@media (max-width: 680px) {
  .bridge-simple-header {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
    padding: 24px 20px;
  }

  .bridge-simple-header > .button {
    width: 100%;
    max-width: none;
  }

  .bridge-simple-progress {
    grid-column: 1;
    grid-template-columns: minmax(0, 1fr);
    gap: 9px;
    padding-top: 17px;
  }

  .bridge-simple-tabs {
    width: 100%;
  }

  .bridge-simple-tabs button {
    flex: 1 0 auto;
  }

  .optional-setup-banner {
    align-items: stretch;
    flex-direction: column;
  }

  .optional-setup-banner > .button,
  .setup-start-core > .button {
    width: 100%;
  }

  .setup-start-core {
    align-items: stretch;
    flex-direction: column;
  }

  .bridge-simple-phase > summary {
    min-height: 70px;
    grid-template-columns: 40px minmax(0, 1fr) auto 16px;
    gap: 10px;
    padding: 12px 13px;
  }

  .bridge-simple-phase__number {
    width: 38px;
    height: 38px;
  }

  .bridge-simple-phase__progress small {
    display: none;
  }

  .bridge-unit-row {
    grid-template-columns: minmax(0, 1fr) 44px;
  }

  .bridge-unit-row__main {
    min-height: 64px;
    grid-template-columns: 38px minmax(0, 1fr) 14px;
    gap: 10px;
    padding-left: 13px;
  }

  .bridge-unit-row__status {
    width: 34px;
    height: 34px;
    border-radius: 10px;
  }

  .bridge-simple-project {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 4px 10px;
    padding: 13px;
  }

  .bridge-simple-project > span:first-child {
    grid-column: 1 / -1;
  }

  .bridge-simple-topbar {
    margin-bottom: 15px;
  }

  .bridge-simple-lesson__header {
    padding-top: 20px;
  }

  .bridge-simple-exercise {
    grid-template-columns: minmax(0, 1fr);
  }

  .bridge-simple-exercise .difficulty-chip {
    width: fit-content;
    margin: 0 0 14px;
  }

  .bridge-simple-exercise > p,
  .bridge-simple-exercise > ul {
    grid-column: 1;
  }

  .bridge-simple-complete {
    grid-template-columns: minmax(0, 1fr);
  }

  .bridge-simple-complete > .button {
    width: 100%;
    justify-self: stretch;
  }

  .bridge-mark-review {
    grid-column: 1;
    justify-self: center;
  }
}

@media (max-width: 430px) {
  .bridge-simple-header h1 {
    font-size: clamp(2rem, 12vw, 2.7rem);
  }

  .bridge-simple-progress > div {
    justify-content: space-between;
    white-space: normal;
  }

  .setup-note {
    align-items: flex-start;
    flex-direction: column;
    gap: 9px;
  }

  .bridge-simple-phase > summary {
    grid-template-columns: 38px minmax(0, 1fr) 16px;
  }

  .bridge-simple-phase__progress {
    display: none;
  }

  .bridge-unit-row__copy strong {
    white-space: normal;
  }

  .bridge-unit-row__arrow {
    display: none;
  }

  .bridge-unit-row__main {
    grid-template-columns: 36px minmax(0, 1fr);
  }

  .bridge-simple-essential,
  .bridge-simple-code,
  .bridge-simple-exercise,
  .bridge-deep-dive,
  .bridge-simple-complete {
    border-radius: 13px;
  }

  .bridge-deep-dive > summary {
    padding-inline: 16px;
  }

  .bridge-deep-dive > summary small {
    display: none;
  }

  .bridge-simple-navigation {
    grid-template-columns: minmax(0, 1fr);
  }

  .bridge-simple-navigation a,
  .bridge-simple-navigation a:last-child {
    justify-content: flex-start;
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  .bridge-simple-phase__chevron,
  .bridge-unit-row__arrow,
  .bridge-simple-project > span:last-child,
  .bridge-deep-dive > summary > span:last-child {
    transition: none;
  }
}

@media print {
  .bridge-simple-tabs,
  .optional-setup-banner,
  .setup-note,
  .bridge-simple-topbar,
  .bridge-simple-complete,
  .bridge-simple-navigation,
  .bridge-unit-row > .bookmark-button {
    display: none !important;
  }

  .bridge-simple-header,
  .bridge-simple-phase,
  .bridge-simple-essential,
  .bridge-simple-code,
  .bridge-simple-exercise,
  .bridge-deep-dive {
    border-color: #999;
    background: #fff !important;
    color: #111;
    box-shadow: none;
  }
}