:root {
  --ink: #151515;
  --muted: #62666f;
  --paper: #fbfaf6;
  --panel: #fffefb;
  --line: #ddd6ca;
  --green: #1f7a4d;
  --blue: #2457d6;
  --coral: #d64f32;
  --amber: #b67515;
  --shadow: 0 22px 70px rgba(21, 21, 21, 0.12);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  background:
    linear-gradient(90deg, rgba(36, 87, 214, 0.08) 1px, transparent 1px),
    linear-gradient(180deg, rgba(31, 122, 77, 0.07) 1px, transparent 1px),
    var(--paper);
  background-size: 42px 42px;
}

a {
  color: inherit;
}

.site-header,
.site-footer,
.page-shell {
  width: min(100% - 2rem, 1180px);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
  background: rgba(251, 250, 246, 0.9);
  backdrop-filter: blur(14px);
}

.brand,
.site-header nav,
.actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.brand {
  color: var(--ink);
  font-family: "Arial Narrow", Arial, sans-serif;
  font-weight: 900;
  letter-spacing: 0;
  text-decoration: none;
  text-transform: uppercase;
}

.brand span {
  display: grid;
  place-items: center;
  width: 2.1rem;
  height: 2.1rem;
  color: white;
  background: var(--ink);
}

.site-header nav a,
.text-link,
.button,
.eyebrow,
.panel-label,
.status-pill {
  font-family: "Arial Narrow", Arial, sans-serif;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.site-header nav a {
  color: var(--muted);
  font-size: 0.82rem;
  text-decoration: none;
}

.site-header nav a:hover,
.site-header nav a[aria-current="page"],
.text-link {
  color: var(--blue);
}

.hero-grid,
.page-hero {
  padding: 5rem 0 4rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(18rem, 0.62fr);
  gap: 2rem;
  align-items: end;
  min-height: calc(100vh - 5rem);
}

.hero-copy,
.page-hero,
.section-head,
.progress-panel,
.card,
.guide-panel,
.workbook-form,
.callout,
.feedback-card {
  display: grid;
  gap: 1rem;
}

.eyebrow,
.panel-label {
  margin: 0;
  color: var(--blue);
  font-size: 0.8rem;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1,
h2,
h3 {
  font-family: "Arial Narrow", Arial, sans-serif;
  font-weight: 900;
  letter-spacing: 0;
  line-height: 0.92;
  text-transform: uppercase;
}

h1 {
  max-width: 12ch;
  font-size: clamp(3.4rem, 9vw, 8.2rem);
}

h2 {
  max-width: 13ch;
  font-size: clamp(2.4rem, 6vw, 5rem);
}

h3 {
  font-size: 1.4rem;
  line-height: 1.05;
}

p,
li,
label,
input,
textarea {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.65;
}

.lead {
  max-width: 62ch;
  font-size: 1.16rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--ink);
  color: var(--ink);
  background: transparent;
  font-size: 0.82rem;
  text-decoration: none;
  cursor: pointer;
  transition: transform 150ms ease, color 150ms ease, background 150ms ease, border-color 150ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  color: white;
  background: var(--ink);
}

.button.primary {
  color: white;
  background: var(--green);
  border-color: var(--green);
}

.progress-panel,
.card,
.guide-panel,
.workbook-form,
.callout,
.feedback-card {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.progress-panel,
.card,
.guide-panel,
.workbook-form,
.callout,
.feedback-card {
  padding: 1.25rem;
}

.progress-meter {
  height: 0.8rem;
  overflow: hidden;
  border: 1px solid rgba(31, 122, 77, 0.35);
  background: rgba(31, 122, 77, 0.08);
}

.progress-meter span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--green);
  transition: width 200ms ease;
}

.section {
  padding: 4.25rem 0;
  border-top: 1px solid var(--line);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.card-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card ul,
.check-list,
.guide-panel ol {
  display: grid;
  gap: 0.6rem;
  margin: 0;
  padding-left: 1.2rem;
}

.accent-green {
  border-top: 5px solid var(--green);
}

.accent-blue {
  border-top: 5px solid var(--blue);
}

.accent-coral {
  border-top: 5px solid var(--coral);
}

.lesson-list {
  display: grid;
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.lesson-row {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  min-height: 4.5rem;
  padding: 1rem;
  background: var(--panel);
  text-decoration: none;
}

.lesson-row:hover {
  background: #f5f1e8;
}

.lesson-row span,
.lesson-row em,
.status-pill {
  color: var(--blue);
  font-style: normal;
  font-family: "Arial Narrow", Arial, sans-serif;
  font-weight: 800;
  text-transform: uppercase;
}

.lesson-row strong {
  font-family: "Arial Narrow", Arial, sans-serif;
  font-size: 1.2rem;
  text-transform: uppercase;
}

.site-card {
  min-height: 18rem;
}

.status-pill {
  width: fit-content;
  padding: 0.35rem 0.55rem;
  color: white;
  background: var(--ink);
  font-size: 0.75rem;
}

.lesson-grid {
  display: grid;
  grid-template-columns: minmax(17rem, 0.65fr) minmax(0, 1fr);
  gap: 1.25rem;
  align-items: start;
  padding-bottom: 4rem;
}

.guide-panel {
  position: sticky;
  top: 5rem;
}

.workbook-form label {
  display: grid;
  gap: 0.45rem;
  color: var(--ink);
  font-family: "Arial Narrow", Arial, sans-serif;
  font-weight: 900;
  text-transform: uppercase;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  color: var(--ink);
  background: #fffaf0;
  padding: 0.85rem;
  font-family: Georgia, "Times New Roman", serif;
}

textarea {
  resize: vertical;
}

.save-status {
  color: var(--green);
  font-weight: 700;
}

.feedback-card {
  border-color: rgba(36, 87, 214, 0.32);
  background: #f7f9ff;
  box-shadow: none;
}

.feedback-card strong {
  color: var(--ink);
}

.site-footer {
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--line);
}

@media (max-width: 880px) {
  .site-header,
  .brand,
  .site-header nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-grid,
  .lesson-grid,
  .card-grid,
  .card-grid.three {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    min-height: auto;
    padding-top: 3rem;
  }

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

  .lesson-row {
    grid-template-columns: 1fr;
  }

  .guide-panel {
    position: static;
  }
}