:root {
  --ink: #17312f;
  --muted: #526562;
  --deep: #183b38;
  --deep-2: #0f2b29;
  --paper: #f7f4ed;
  --soft: #eef2ed;
  --white: #ffffff;
  --line: #cfd9d5;
  --accent: #9cc8bd;
  --accent-strong: #3f7f75;
  --warm: #e9dfcf;
  --shadow: 0 18px 48px rgba(22, 55, 51, 0.10);
  --radius: 22px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}
button, input, textarea { font: inherit; }
a { color: var(--deep); }
button { color: inherit; }

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: .75rem 1rem;
  background: var(--white);
  border: 2px solid var(--deep);
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

.page-width { width: min(1160px, calc(100% - 32px)); margin-inline: auto; }
.narrow { width: min(800px, calc(100% - 32px)); }

.site-header {
  background: var(--deep-2);
  color: var(--white);
  border-bottom: 1px solid rgba(255,255,255,.14);
}
.header-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  text-decoration: none;
  font-weight: 750;
  font-size: 1.12rem;
}
.brand-mark { font-size: 1.8rem; line-height: 1; color: var(--accent); }
.gradus-name { display: grid; justify-items: end; font-size: .9rem; color: #dbe7e4; }
.gradus-name strong { color: var(--white); font-size: 1rem; }

.course-hero {
  padding: clamp(58px, 9vw, 112px) 0 72px;
  background:
    radial-gradient(circle at 90% 5%, rgba(156,200,189,.33), transparent 34%),
    linear-gradient(180deg, var(--soft), var(--paper));
}
.eyebrow {
  margin: 0 0 10px;
  font-size: .78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--accent-strong);
}
h1, h2, h3 { line-height: 1.15; letter-spacing: -.025em; }
h1 { margin: 0; font-size: clamp(2.5rem, 7vw, 5.6rem); max-width: 900px; }
h2 { font-size: clamp(2rem, 4vw, 3.45rem); margin: 0 0 22px; }
h3 { font-size: 1.3rem; margin-top: 0; }
.hero-lede { font-size: clamp(1.15rem, 2.4vw, 1.5rem); max-width: 720px; color: var(--muted); }

.permission-panel {
  margin: 32px 0 24px;
  padding: 22px 24px;
  background: var(--white);
  border-left: 5px solid var(--accent-strong);
  border-radius: 0 16px 16px 0;
  box-shadow: var(--shadow);
}
.permission-panel p { margin: 0; }
.permission-panel p + p { margin-top: 6px; }
.course-meta { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0; }
.course-meta span {
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,.7);
  font-size: .9rem;
}
.privacy-note { color: var(--muted); font-size: .92rem; }
.hero-actions, .summary-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }

.button {
  min-height: 48px;
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 750;
  cursor: pointer;
}
.button-primary { background: var(--deep); color: var(--white); }
.button-primary:hover { background: var(--deep-2); }
.button-secondary { background: var(--white); color: var(--deep); border-color: var(--line); }
.button-secondary:hover { border-color: var(--accent-strong); }
.text-button { border: 0; background: transparent; padding: 10px; text-decoration: underline; cursor: pointer; }
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 3px solid #e0a940;
  outline-offset: 3px;
}

.course-shell {
  display: grid;
  grid-template-columns: minmax(210px, 270px) minmax(0, 1fr);
  gap: 28px;
  padding: 70px 0;
  align-items: start;
}
.part-nav {
  position: sticky;
  top: 20px;
  display: grid;
  gap: 8px;
}
.part-nav button {
  display: grid;
  grid-template-columns: 34px 1fr;
  align-items: center;
  gap: 10px;
  text-align: left;
  border: 1px solid transparent;
  border-radius: 14px;
  background: transparent;
  padding: 10px;
  cursor: pointer;
}
.part-nav button span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--warm);
  font-weight: 800;
}
.part-nav button[aria-current="step"] { background: var(--white); border-color: var(--line); box-shadow: 0 8px 24px rgba(22,55,51,.07); }
.part-nav button[aria-current="step"] span { background: var(--deep); color: var(--white); }

.course-panel {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(24px, 4vw, 54px);
  box-shadow: var(--shadow);
}
.course-part { max-width: 780px; }
.part-intro { font-size: 1.12rem; color: var(--muted); }
.save-status { min-height: 1.5rem; color: var(--accent-strong); font-weight: 700; margin-bottom: 6px; }

.notice-box, .key-line, .finish-note {
  margin: 26px 0;
  padding: 18px 20px;
  background: var(--soft);
  border-radius: 15px;
}
.notice-box p, .key-line p { margin: 5px 0 0; }
.key-line { border-left: 4px solid var(--accent-strong); }

.card-frame-wrap { margin: 30px 0; }
.card-frame {
  display: block;
  width: 100%;
  height: 760px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--soft);
}
.frame-fallback { font-size: .9rem; color: var(--muted); }

.reflection-block {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
  margin: 30px 0;
}
.reflection-block legend { padding: 0 8px; font-weight: 800; font-size: 1.15rem; }
.field-help { margin-top: 0; color: var(--muted); font-size: .94rem; }
.choice-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.choice-grid label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px;
  background: var(--paper);
  border: 1px solid transparent;
  border-radius: 12px;
  cursor: pointer;
}
.choice-grid label:has(input:checked) { border-color: var(--accent-strong); background: var(--soft); }
.choice-grid input { margin-top: .28rem; accent-color: var(--deep); }
.reflection-block > label[for] { display: block; font-weight: 750; margin: 22px 0 8px; }
.optional { font-weight: 400; color: var(--muted); }
textarea {
  width: 100%;
  resize: vertical;
  padding: 13px;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
}

.comparison-grid, .next-step-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 28px 0;
}
.comparison-grid section, .next-step-cards section {
  padding: 20px;
  border-radius: 16px;
  background: var(--soft);
  border: 1px solid var(--line);
}
.comparison-grid p, .next-step-cards p { margin-bottom: 0; }

.pathway-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 30px 0;
}
.pathway-strip div {
  min-height: 150px;
  padding: 18px;
  border-radius: 16px;
  background: var(--deep);
  color: var(--white);
}
.pathway-strip strong { display: block; font-size: 1.18rem; margin-bottom: 8px; }
.pathway-strip span { color: #dbe7e4; font-size: .92rem; }

.timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 34px 0;
}
.timeline div { padding: 18px; border-top: 4px solid var(--accent-strong); background: var(--soft); border-radius: 0 0 14px 14px; }
.timeline span { font-weight: 850; }
.timeline p { margin-bottom: 0; font-size: .92rem; }

.summary-card {
  margin-top: 28px;
  padding: 24px;
  border-radius: 18px;
  background: var(--deep);
  color: var(--white);
}
.summary-card .eyebrow { color: var(--accent); }
.summary-card h3 { font-size: 1.65rem; }
.summary-privacy { color: #dbe7e4; font-size: .9rem; }
.next-links { display: grid; gap: 10px; margin: 30px 0; }
.next-links a { display: block; padding: 15px 18px; background: var(--soft); border-radius: 12px; font-weight: 750; text-decoration: none; }
.next-links a:hover { text-decoration: underline; }
.course-end { margin-top: 34px; padding-top: 24px; border-top: 1px solid var(--line); }

.part-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 38px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.safety { padding: 18px 0 72px; }
.safety h2 { font-size: 1.7rem; }
.safety p { color: var(--muted); }
.site-footer { background: var(--deep-2); color: #dbe7e4; padding: 32px 0; }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.site-footer a { color: var(--white); }

[hidden] { display: none !important; }

@media (max-width: 900px) {
  .course-shell { grid-template-columns: 1fr; }
  .part-nav { position: static; grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .part-nav button { grid-template-columns: 30px 1fr; font-size: .88rem; }
  .part-nav button span { width: 30px; height: 30px; }
  .pathway-strip, .timeline { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .card-frame { height: 700px; }
}

@media (max-width: 620px) {
  .header-inner { align-items: flex-start; padding-block: 16px; }
  .gradus-name { justify-items: start; }
  .header-inner { flex-direction: column; gap: 8px; }
  .course-hero { padding-top: 48px; }
  .course-meta { align-items: flex-start; }
  .part-nav { display: flex; overflow-x: auto; padding-bottom: 6px; }
  .part-nav button { flex: 0 0 170px; }
  .course-panel { padding: 24px 18px; }
  .choice-grid, .comparison-grid, .next-step-cards, .pathway-strip, .timeline { grid-template-columns: 1fr; }
  .card-frame { height: 640px; }
  .part-actions .button, .part-actions .text-button, .hero-actions .button, .summary-actions .button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

@media print {
  .site-header, .course-hero, .part-nav, .part-actions, .safety, .site-footer, .card-frame-wrap, .summary-actions, .next-links { display: none !important; }
  body { background: white; }
  .course-shell { display: block !important; padding: 0; width: 100%; }
  .course-panel { border: 0; box-shadow: none; padding: 0; }
  .course-part { display: none !important; }
  .course-part[data-part="6"] { display: block !important; }
  .reflection-block { border: 0; padding: 0; }
}