@import url('https://fonts.googleapis.com/css2?family=Noto+Sans:wght@400;500&family=Noto+Serif:wght@500&display=swap');

:root {
  --cream: #f6f2e8;
  --matcha-pale: #dbf2d0;
  --green: #314535;
  --sage: #aec2a4;
  --heading: #2b3a2e;
  --body: #4a5547;
  --line: #c8d4bc;
  --white: #fffef9;
  --shadow: 0 3px 8px rgba(22, 39, 25, 0.08), 0 12px 28px rgba(22, 39, 25, 0.08);
  --content: 1180px;
  --reading: 760px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--cream);
  color: var(--body);
  font-family: 'Noto Sans', sans-serif;
  font-size: 16px;
  line-height: 1.65;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 0;
  background: var(--cream);
}

body.drawer-open {
  overflow: hidden;
}

h1,
h2,
h3 {
  margin: 0 0 24px;
  color: var(--heading);
  font-family: 'Noto Serif', serif;
  font-weight: 500;
  line-height: 1.24;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.5rem, 7vw, 3rem);
}

h2 {
  font-size: clamp(2rem, 5vw, 2.5rem);
}

h3 {
  font-size: 1.5rem;
}

p,
li,
dd,
dt,
figcaption,
blockquote {
  font-size: 1rem;
}

p {
  margin: 0 0 24px;
}

ul,
ol {
  margin: 0 0 24px;
  padding-left: 24px;
}

li + li {
  margin-top: 12px;
}

a {
  color: var(--body);
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

a:hover {
  color: var(--green);
  text-decoration-thickness: 2px;
}

button,
input,
summary,
a {
  outline: none;
}

button:focus-visible,
input:focus-visible,
summary:focus-visible,
a:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

strong {
  color: var(--heading);
  font-weight: 500;
}

button {
  font: inherit;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 8px;
  left: 8px;
  min-height: 48px;
  padding: 10px 16px;
  transform: translateY(-160%);
  border-radius: 4px;
  background: var(--green);
  color: var(--white);
}

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

.site-header {
  position: sticky;
  z-index: 40;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: rgba(246, 242, 232, 0.98);
}

.nav-shell {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) auto auto;
  gap: 16px;
  align-items: center;
  max-width: var(--content);
  min-height: 72px;
  margin: 0 auto;
  padding: 8px 32px;
}

.brand-link {
  display: flex;
  min-height: 48px;
  align-items: center;
  color: var(--heading);
  font-family: 'Noto Serif', serif;
  font-size: 1.125rem;
  font-weight: 500;
  text-decoration: none;
}

.brand-note {
  margin-left: 12px;
  color: var(--body);
  font-family: 'Noto Sans', sans-serif;
  font-size: 0.875rem;
  font-weight: 400;
}

.chapter-menu {
  position: relative;
}

.chapter-menu > summary {
  display: flex;
  min-height: 48px;
  align-items: center;
  cursor: pointer;
  color: var(--heading);
  font-size: 1rem;
  font-weight: 500;
  list-style: none;
}

.chapter-menu > summary::-webkit-details-marker {
  display: none;
}

.chapter-menu > summary::after {
  margin-left: 8px;
  content: '↓';
}

.chapter-menu[open] > summary::after {
  content: '↑';
}

.chapter-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 9px);
  display: grid;
  width: min(760px, calc(100vw - 48px));
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.chapter-label {
  margin: 0 0 8px;
  color: var(--green);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.chapter-links {
  margin: 0;
  padding: 0;
  list-style: none;
}

.chapter-links li,
.chapter-links li + li {
  margin: 0;
}

.chapter-link {
  display: flex;
  min-height: 44px;
  align-items: center;
  padding: 6px 0;
  font-size: 1rem;
}

.nav-action,
.button-primary,
.button-secondary,
.evidence-trigger,
.drawer-close,
.next-link,
.source-link {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.2;
  text-decoration: none;
}

.nav-action,
.button-primary {
  padding: 12px 20px;
  border: 1px solid var(--green);
  background: var(--green);
  color: var(--white);
}

.nav-action:hover,
.button-primary:hover {
  color: var(--white);
}

.button-secondary {
  padding: 12px 20px;
  border: 1px solid var(--green);
  background: transparent;
  color: var(--green);
}

.nav-action,
.button-primary,
.button-secondary,
.evidence-trigger,
.drawer-close {
  transition: transform 160ms ease, background-color 160ms ease;
}

.nav-action:hover,
.button-primary:hover,
.button-secondary:hover,
.evidence-trigger:hover,
.drawer-close:hover {
  transform: translateY(-2px);
}

.page-main {
  overflow: clip;
}

.photo-hero {
  position: relative;
  min-height: min(720px, calc(100vh - 72px));
  display: grid;
  align-items: end;
  isolation: isolate;
  background: var(--green);
}

.photo-hero-image,
.photo-hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.photo-hero-image {
  z-index: -2;
  object-fit: cover;
}

.photo-hero-shade {
  z-index: -1;
  background: rgba(25, 42, 29, 0.78);
}

.photo-hero-content {
  width: min(100%, var(--content));
  margin: 0 auto;
  padding: 72px 32px;
  color: var(--cream);
}

.photo-hero-content h1 {
  max-width: 800px;
  color: var(--white);
  font-size: clamp(2.5rem, 6.5vw, 3rem);
}

.hero-lede {
  max-width: 680px;
  margin-bottom: 32px;
  color: var(--body);
  font-size: 1.125rem;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--green);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.photo-hero .eyebrow,
.photo-hero .hero-lede {
  color: var(--matcha-pale);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.photo-hero .button-primary {
  background: var(--cream);
  color: var(--green);
  border-color: var(--cream);
}

.photo-hero .button-primary:hover {
  color: var(--green);
}

.photo-hero .button-secondary {
  border-color: var(--cream);
  color: var(--cream);
}

.page-hero {
  max-width: var(--content);
  margin: 0 auto;
  padding: 80px 32px 64px;
}

.page-hero h1,
.page-hero .hero-lede {
  max-width: var(--reading);
}

.page-hero .eyebrow {
  font-size: 1rem;
}

.content-section {
  border-top: 1px solid var(--line);
  padding: 64px 32px;
}

.section-shell {
  max-width: var(--content);
  margin: 0 auto;
}

.reading-column {
  max-width: var(--reading);
}

.reading-column > :last-child {
  margin-bottom: 0;
}

.highlight-block {
  padding: 32px;
  border: 1px solid var(--sage);
  border-radius: 4px;
  background: var(--matcha-pale);
}

.highlight-block > :last-child {
  margin-bottom: 0;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.answer-card,
.route-card,
.check-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.route-card {
  background: rgba(174, 194, 164, 0.22);
}

.answer-card > :last-child,
.route-card > :last-child,
.check-card > :last-child {
  margin-bottom: 0;
}

.card-link {
  display: flex;
  min-height: 48px;
  align-items: center;
  margin-top: 16px;
  color: var(--green);
  font-size: 1rem;
  font-weight: 500;
}

.question-list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.question-item {
  padding: 24px;
  border-left: 4px solid var(--green);
  background: var(--white);
}

.question-item strong {
  display: block;
  margin-bottom: 8px;
  font-family: 'Noto Serif', serif;
  font-size: 1.125rem;
  font-weight: 500;
}

.path-list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.path-item {
  display: grid;
  grid-template-columns: minmax(180px, 0.8fr) minmax(0, 1.6fr);
  gap: 32px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.path-item strong {
  font-family: 'Noto Serif', serif;
  font-size: 1.125rem;
  font-weight: 500;
}

.path-item p {
  margin: 0;
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 48px;
  align-items: start;
}

.still-life-frame {
  margin: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.still-life-frame img {
  width: 100%;
  aspect-ratio: 5 / 4;
  object-fit: cover;
  background: var(--sage);
}

.still-life-frame figcaption {
  margin-top: 12px;
  color: var(--body);
}

.source-note {
  margin-top: 24px;
  border-top: 1px solid var(--line);
}

.drawer-ready .source-note {
  display: none;
}

.source-note > summary {
  display: flex;
  min-height: 48px;
  align-items: center;
  cursor: pointer;
  color: var(--green);
  font-size: 1rem;
  font-weight: 500;
}

.source-note-content {
  padding: 16px 0 8px;
}

.source-note-content p,
.source-note-content li {
  font-size: 1rem;
}

.source-note-content > :last-child {
  margin-bottom: 0;
}

.evidence-trigger {
  margin-top: 16px;
  padding: 12px 16px;
  border: 1px solid var(--green);
  background: transparent;
  color: var(--green);
  cursor: pointer;
}

.evidence-backdrop {
  position: fixed;
  z-index: 60;
  inset: 0;
  background: rgba(25, 42, 29, 0.56);
}

.evidence-drawer {
  position: fixed;
  z-index: 70;
  top: 0;
  right: 0;
  width: min(520px, 100%);
  height: 100%;
  overflow-y: auto;
  padding: 32px;
  border-left: 1px solid var(--line);
  background: var(--cream);
  box-shadow: -8px 0 28px rgba(22, 39, 25, 0.16);
}

.drawer-head {
  display: flex;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.drawer-title {
  margin: 0;
  font-family: 'Noto Serif', serif;
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--heading);
}

.drawer-close {
  flex: none;
  min-width: 72px;
  padding: 10px 14px;
  border: 1px solid var(--green);
  background: var(--green);
  color: var(--white);
  cursor: pointer;
}

.source-link {
  justify-content: flex-start;
  color: var(--green);
}

.next-band {
  padding: 48px 32px;
  border-top: 1px solid var(--line);
  background: var(--matcha-pale);
}

.next-shell {
  max-width: var(--content);
  margin: 0 auto;
}

.next-shell p {
  margin-bottom: 8px;
}

.next-link {
  justify-content: flex-start;
  color: var(--green);
  font-family: 'Noto Serif', serif;
  font-size: 1.5rem;
}

.site-footer {
  border-top: 1px solid var(--line);
}

.footer-shell {
  max-width: var(--content);
  margin: 0 auto;
  padding: 56px 32px 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr repeat(3, 1fr);
  gap: 32px;
}

.footer-title {
  margin: 0 0 16px;
  color: var(--heading);
  font-family: 'Noto Serif', serif;
  font-size: 1.5rem;
}

.footer-copy,
.footer-note {
  font-size: 1rem;
}

.footer-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-list li,
.footer-list li + li {
  margin: 0;
}

.footer-link {
  display: flex;
  min-height: 44px;
  align-items: center;
  font-size: 1rem;
}

.footer-note {
  margin: 32px 0 0;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.not-found {
  min-height: 62vh;
  display: grid;
  place-items: center;
  padding: 80px 32px;
}

.not-found-card {
  max-width: 680px;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--white);
  box-shadow: var(--shadow);
}

[hidden] {
  display: none !important;
}

@media (min-width: 900px) {
  .photo-hero-content {
    padding-top: 96px;
    padding-bottom: 96px;
  }

  .page-hero {
    padding-top: 96px;
    padding-bottom: 80px;
  }

  .content-section {
    padding-top: 96px;
    padding-bottom: 96px;
  }
}

@media (max-width: 880px) {
  .nav-shell {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .chapter-menu {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .chapter-menu > summary {
    min-height: 44px;
  }

  .chapter-panel {
    position: static;
    width: 100%;
    max-height: calc(100vh - 132px);
    overflow-y: auto;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin: 8px 0 12px;
  }

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

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

@media (max-width: 620px) {
  .nav-shell {
    gap: 0 12px;
    padding: 8px 24px;
  }

  .brand-note {
    display: none;
  }

  .nav-action {
    padding-right: 12px;
    padding-left: 12px;
  }

  .chapter-panel {
    grid-template-columns: 1fr;
    padding: 24px;
  }

  .photo-hero {
    min-height: 680px;
  }

  .photo-hero-content,
  .page-hero,
  .content-section,
  .next-band,
  .footer-shell,
  .not-found {
    padding-right: 24px;
    padding-left: 24px;
  }

  .photo-hero-content {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .page-hero,
  .content-section {
    padding-top: 64px;
    padding-bottom: 64px;
  }

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

  .button-primary,
  .button-secondary {
    width: 100%;
  }

  .card-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .path-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .highlight-block,
  .answer-card,
  .route-card,
  .check-card,
  .question-item,
  .evidence-drawer,
  .not-found-card {
    padding: 24px;
  }
}

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

  .nav-action,
  .button-primary,
  .button-secondary,
  .evidence-trigger,
  .drawer-close {
    transition: none;
  }
}