:root {
  --ink: #071512;
  --ink-soft: #123027;
  --leaf: #2f7d55;
  --leaf-deep: #0f4935;
  --honey: #f2b83b;
  --amber: #d88425;
  --blue: #4ab3c6;
  --coral: #d95f4d;
  --paper: #f6fbf4;
  --paper-strong: #ffffff;
  --text: #10211d;
  --muted: #566963;
  --border: rgba(16, 33, 29, 0.15);
  --shadow: 0 22px 60px rgba(7, 21, 18, 0.18);
  --heading: "Nunito Sans", "Avenir Next", Arial, sans-serif;
  --body: "Atkinson Hyperlegible", "Segoe UI", Arial, sans-serif;
  --max: 1160px;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: var(--body);
  font-size: 18px;
  line-height: 1.58;
  overflow-x: hidden;
}

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

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  top: -4rem;
  left: 1rem;
  z-index: 40;
  background: var(--honey);
  color: var(--ink);
  padding: 0.65rem 0.85rem;
  text-decoration: none;
  font-weight: 900;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(7, 21, 18, 0.96);
  border-bottom: 1px solid rgba(74, 179, 198, 0.22);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.8rem 1.25rem;
  position: relative;
}

.brand {
  display: grid;
  color: var(--paper-strong);
  font-family: var(--heading);
  line-height: 1;
  text-decoration: none;
}

.brand span {
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.brand strong {
  color: var(--honey);
  font-size: 1.08rem;
  font-weight: 900;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.nav-links a {
  color: #dceee7;
  font-size: 0.9rem;
  font-weight: 800;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a:focus,
.nav-links a[aria-current="page"] {
  color: var(--honey);
}

.nav-toggle {
  display: none;
  border: 1px solid rgba(246, 251, 244, 0.5);
  border-radius: 8px;
  background: transparent;
  color: var(--paper-strong);
  font-family: var(--heading);
  font-weight: 900;
  padding: 0.55rem 0.75rem;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--heading);
  letter-spacing: 0;
  line-height: 1.04;
  overflow-wrap: break-word;
}

h1 {
  font-size: clamp(2.65rem, 7vw, 5.9rem);
  max-width: 12ch;
}

h2 {
  font-size: clamp(2rem, 4.2vw, 3.55rem);
  max-width: 16ch;
}

h3 {
  font-size: 1.32rem;
}

p {
  margin: 0;
  overflow-wrap: break-word;
}

p + p {
  margin-top: 1rem;
}

.hero {
  position: relative;
  min-height: min(720px, calc(100vh - 128px));
  background: var(--ink);
  color: var(--paper-strong);
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(7, 21, 18, 0.96) 0%, rgba(7, 21, 18, 0.76) 43%, rgba(7, 21, 18, 0.22) 78%),
    linear-gradient(180deg, rgba(7, 21, 18, 0.08), rgba(7, 21, 18, 0.34));
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  align-content: center;
  min-height: min(720px, calc(100vh - 128px));
  max-width: var(--max);
  margin: 0 auto;
  padding: 4.6rem 1.25rem 2.2rem;
}

.hero-copy {
  max-width: 700px;
}

.page-hero .hero-inner {
  min-height: min(640px, calc(100vh - 128px));
}

.lede {
  max-width: min(44rem, calc(100vw - 2.5rem));
  margin-top: 1.2rem;
  color: #dceee7;
  font-size: clamp(1.12rem, 2.4vw, 1.43rem);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 10rem;
  border-radius: 8px;
  padding: 0.86rem 1rem;
  font-family: var(--heading);
  font-weight: 900;
  text-decoration: none;
}

.button.primary {
  background: var(--honey);
  color: var(--ink);
}

.button.secondary {
  background: rgba(7, 21, 18, 0.68);
  border: 1px solid rgba(74, 179, 198, 0.72);
  color: #e8fffa;
}

.hero-facts {
  align-self: end;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  max-width: 940px;
  margin-top: 2rem;
  padding: 1rem;
  border: 1px solid rgba(74, 179, 198, 0.32);
  border-radius: 8px;
  background: rgba(7, 21, 18, 0.9);
}

.hero-facts div {
  border-left: 4px solid var(--blue);
  padding-left: 0.85rem;
}

.hero-facts strong {
  display: block;
  font-family: var(--heading);
  font-size: 1.08rem;
}

.hero-facts span {
  display: block;
  color: #c5ded6;
  font-size: 0.94rem;
}

.notice {
  background: var(--honey);
  color: var(--ink);
  font-weight: 800;
  padding: 1rem 1.25rem;
}

.notice div {
  max-width: var(--max);
  margin: 0 auto;
}

.section {
  padding: clamp(3.8rem, 6vw, 5rem) 1.25rem;
}

.section.dark {
  background:
    radial-gradient(circle at 10% 0%, rgba(74, 179, 198, 0.18), transparent 26rem),
    linear-gradient(135deg, var(--ink) 0%, var(--ink-soft) 100%);
  color: var(--paper-strong);
}

.section.green {
  background: #e2f4e5;
}

.section.blue {
  background: #e1f5f7;
}

.section.honey {
  background: #fff1c8;
}

.section-inner {
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
}

.section-head {
  max-width: 780px;
}

.section-head p,
.soft {
  max-width: min(44rem, calc(100vw - 2.5rem));
  margin-top: 1rem;
  color: var(--muted);
  font-size: 1.08rem;
}

.dark .section-head p,
.dark .soft {
  color: #c7ded6;
}

.eyebrow {
  margin-bottom: 0.8rem;
  color: var(--leaf);
  font-family: var(--heading);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.dark .eyebrow {
  color: var(--honey);
}

.grid {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

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

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

.grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card,
.route-card,
.source-card,
.question-card,
.step-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--paper-strong);
  color: var(--text);
  box-shadow: 0 12px 34px rgba(7, 21, 18, 0.08);
  padding: 1.25rem;
}

.dark .card,
.dark .route-card,
.dark .source-card,
.dark .question-card,
.dark .step-card {
  border-color: rgba(246, 251, 244, 0.18);
  background: rgba(246, 251, 244, 0.08);
  color: var(--paper-strong);
}

.card h3,
.route-card h3,
.source-card h3,
.question-card h3,
.step-card h3 {
  margin-bottom: 0.6rem;
}

.card p,
.route-card p,
.source-card p,
.question-card p,
.step-card p {
  color: var(--muted);
}

.dark .card p,
.dark .route-card p,
.dark .source-card p,
.dark .question-card p,
.dark .step-card p {
  color: #c7ded6;
}

.route-card {
  display: grid;
  min-height: 13rem;
  text-decoration: none;
}

.route-card:hover,
.route-card:focus {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.route-card span,
.fact-label,
.step-card span {
  color: var(--leaf);
  font-family: var(--heading);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.dark .route-card span,
.dark .fact-label,
.dark .step-card span {
  color: var(--blue);
}

.route-card strong {
  align-self: end;
  margin-top: 1rem;
  color: var(--coral);
  font-family: var(--heading);
  font-weight: 900;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
  gap: 2rem;
  align-items: start;
}

.fact-list,
.question-list {
  display: grid;
  gap: 0.8rem;
}

.fact-row {
  display: grid;
  justify-items: start;
  padding: 1rem;
  border-left: 5px solid var(--blue);
  border-radius: 8px;
  background: var(--paper-strong);
  box-shadow: 0 10px 28px rgba(7, 21, 18, 0.07);
}

.fact-row strong {
  display: block;
  color: var(--text);
  font-family: var(--heading);
}

.fact-row span {
  color: var(--muted);
}

.question-card {
  border-left: 6px solid var(--honey);
}

.step-card {
  min-height: 12rem;
}

.source-card a,
.inline-link {
  color: var(--leaf-deep);
  font-weight: 900;
  text-underline-offset: 0.16em;
}

.dark .source-card a,
.dark .inline-link {
  color: var(--honey);
}

.plain-list {
  margin: 1rem 0 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

.plain-list li + li {
  margin-top: 0.5rem;
}

.dark .plain-list {
  color: #c7ded6;
}

.callout {
  margin-top: 2rem;
  padding: 1.25rem;
  border-left: 6px solid var(--honey);
  border-radius: 8px;
  background: var(--ink);
  color: var(--paper-strong);
}

.callout p {
  color: #dceee7;
}

.sequence-wrap {
  background: var(--paper);
  padding: clamp(3.8rem, 6vw, 5rem) 1.25rem clamp(7rem, 9vw, 8.5rem);
}

.sequence-nav {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(9rem, auto) minmax(0, 1fr);
  align-items: center;
  gap: 1.2rem;
  max-width: var(--max);
  margin: 0 auto;
}

.sequence-link,
.sequence-home {
  display: grid;
  min-height: 5.2rem;
  justify-content: start;
  border: 1px solid rgba(16, 33, 29, 0.12);
  border-radius: 8px;
  background: var(--ink);
  color: var(--paper-strong);
  box-shadow: 0 14px 34px rgba(7, 21, 18, 0.12);
  padding: 1.05rem 1.35rem;
  text-decoration: none;
}

.sequence-link span {
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.sequence-link strong {
  font-family: var(--heading);
  font-size: 1.2rem;
}

.sequence-link.next {
  justify-content: end;
  text-align: right;
}

.sequence-link.disabled {
  opacity: 0.45;
}

.sequence-home {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  justify-self: center;
  min-width: 9.5rem;
  background: var(--honey);
  color: var(--ink);
  font-family: var(--heading);
  font-weight: 900;
}

.site-footer {
  background: var(--ink);
  color: var(--paper-strong);
  padding: 2.5rem 1.25rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2rem;
  max-width: var(--max);
  margin: 0 auto;
}

.footer-title {
  color: var(--honey);
  font-family: var(--heading);
  font-size: 1.3rem;
  font-weight: 900;
}

.site-footer p:not(.footer-title) {
  max-width: 42rem;
  color: #c7ded6;
}

.site-footer nav {
  display: grid;
  gap: 0.45rem;
}

.site-footer a {
  color: #e8fffa;
  font-weight: 800;
  text-decoration: none;
}

.back-to-top {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 35;
  opacity: 0;
  pointer-events: none;
  transform: translateY(0.6rem);
  transition: opacity 160ms ease, transform 160ms ease;
  border: 0;
  border-radius: 8px;
  background: var(--honey);
  color: var(--ink);
  box-shadow: 0 12px 30px rgba(7, 21, 18, 0.28);
  cursor: pointer;
  font-family: var(--heading);
  font-weight: 900;
  padding: 0.8rem 1rem;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

@media (max-width: 1180px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    inset: 100% 0 auto 0;
    display: none;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0;
    border-top: 1px solid rgba(74, 179, 198, 0.18);
    background: var(--ink);
    padding: 0.75rem 1.25rem 1rem;
  }

  .nav-links.is-open {
    display: grid;
  }

  .nav-links a {
    padding: 0.7rem 0;
  }

  .grid.three,
  .grid.four,
  .split,
  .hero-facts,
  .footer-inner,
  .sequence-nav {
    grid-template-columns: 1fr;
  }

  .sequence-link.next {
    justify-content: start;
    text-align: left;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  h1 {
    font-size: clamp(2rem, 9vw, 2.85rem);
  }

  h2 {
    font-size: clamp(1.65rem, 7vw, 2.35rem);
  }

  .hero::before {
    background:
      linear-gradient(90deg, rgba(7, 21, 18, 0.96) 0%, rgba(7, 21, 18, 0.8) 68%, rgba(7, 21, 18, 0.52) 100%),
      linear-gradient(180deg, rgba(7, 21, 18, 0.08), rgba(7, 21, 18, 0.4));
  }

  .hero-inner {
    padding-top: 4rem;
  }

  .hero-facts {
    display: none;
  }

  .button {
    width: 100%;
  }

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