:root {
  --ink: #26332f;
  --muted: #63706b;
  --bridge: #123f36;
  --bridge-dark: #092e28;
  --bridge-light: #2d7565;
  --gold: #d6ae5b;
  --paper: #f4f1e9;
  --card: #fffdf8;
  --line: #dcd8ce;
  --advisory: #e4b84f;
  --escort: #df7b40;
  --closed: #c44d4d;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.55;
}

a {
  color: var(--bridge-light);
}

a:hover {
  color: var(--bridge-dark);
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 8px 11px;
  color: #fff;
  background: var(--bridge-dark);
  transform: translateY(-150%);
}

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

.site-header {
  min-height: 68px;
  padding: 14px clamp(18px, 4vw, 54px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  background: #fffdf9;
  border-bottom: 1px solid var(--line);
}

.site-name {
  color: var(--bridge-dark);
  font-size: 20px;
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 19px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.site-nav a {
  color: #4a5752;
  text-decoration: none;
}

.guide-shell {
  width: min(100% - 32px, 1100px);
  margin: 0 auto;
  padding: 26px 0 70px;
}

.breadcrumb {
  margin-bottom: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  color: #7c8682;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 9px;
  text-transform: uppercase;
}

.breadcrumb a {
  color: #61706a;
  text-decoration: none;
}

.guide-hero {
  padding: clamp(28px, 6vw, 66px);
  color: #fff;
  background:
    linear-gradient(90deg, rgba(7, 38, 32, 0.96), rgba(12, 56, 48, 0.86)),
    url("/assets/search/mackinac-bridge-live.jpg") center / cover;
  border-radius: 18px;
  box-shadow: 0 20px 50px rgba(24, 47, 40, 0.14);
}

.eyebrow {
  margin: 0 0 7px;
  color: var(--gold);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.guide-hero h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(36px, 7vw, 68px);
  font-weight: 400;
  letter-spacing: -0.04em;
  line-height: 0.98;
}

.guide-hero .lede {
  max-width: 760px;
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(15px, 2vw, 19px);
}

.hero-actions {
  margin-top: 23px;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.button {
  min-height: 42px;
  padding: 10px 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: var(--bridge-light);
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 7px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.button:hover {
  color: #fff;
  background: var(--bridge);
}

.button-light {
  color: var(--bridge-dark);
  background: #fff;
  border-color: #fff;
}

.button-light:hover {
  color: var(--bridge-dark);
  background: #f3ead7;
}

.answer-card {
  margin: -16px auto 0;
  width: min(calc(100% - 36px), 930px);
  padding: 22px 24px;
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-top: 4px solid var(--gold);
  border-radius: 12px;
  box-shadow: 0 15px 35px rgba(30, 55, 47, 0.11);
}

.answer-card h2 {
  margin: 0 0 6px;
  color: var(--bridge-dark);
  font-size: 23px;
  font-weight: 400;
}

.answer-card p {
  margin: 0;
  color: #55625d;
  font-size: 13px;
}

.content-grid {
  margin-top: 47px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 270px;
  gap: 38px;
}

.article-content section + section {
  margin-top: 45px;
}

.article-content h2 {
  margin: 0 0 12px;
  color: var(--bridge-dark);
  font-size: clamp(27px, 4vw, 39px);
  font-weight: 400;
  letter-spacing: -0.025em;
  line-height: 1.12;
}

.article-content h3 {
  margin: 24px 0 7px;
  color: var(--bridge);
  font-size: 20px;
  font-weight: 400;
}

.article-content p,
.article-content li {
  color: #52605b;
  font-size: 13px;
}

.article-content ul,
.article-content ol {
  padding-left: 21px;
}

.article-content li {
  margin: 7px 0;
}

.fact-grid,
.threshold-grid,
.related-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.fact-card,
.threshold-card {
  padding: 19px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 11px;
}

.fact-card span,
.threshold-card span {
  color: #78827e;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.fact-card strong,
.threshold-card strong {
  display: block;
  margin: 5px 0;
  color: var(--bridge-dark);
  font-size: 19px;
  font-weight: 400;
}

.fact-card p,
.threshold-card p {
  margin: 0;
  font-size: 11px;
}

.threshold-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.threshold-card {
  padding: 15px;
  border-top: 4px solid var(--bridge-light);
}

.threshold-card.advisory {
  border-top-color: var(--advisory);
}

.threshold-card.escort {
  border-top-color: var(--escort);
}

.threshold-card.partial,
.threshold-card.closed {
  border-top-color: var(--closed);
}

.threshold-card strong {
  font-size: 16px;
}

.callout {
  padding: 17px 19px;
  color: #4f5c57;
  background: #e6efeb;
  border-left: 4px solid var(--bridge-light);
  border-radius: 0 8px 8px 0;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 11px;
  line-height: 1.55;
}

.callout.warning {
  background: #fff3d6;
  border-left-color: var(--gold);
}

.sidebar {
  align-self: start;
  position: sticky;
  top: 18px;
}

.side-card {
  padding: 19px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 11px;
}

.side-card + .side-card {
  margin-top: 12px;
}

.side-card h2 {
  margin: 0 0 8px;
  color: var(--bridge-dark);
  font-size: 18px;
  font-weight: 400;
}

.side-card p,
.side-card li {
  color: #66716d;
  font-size: 10px;
}

.side-card ul {
  margin: 0;
  padding-left: 17px;
}

.side-card a {
  font-family: Arial, Helvetica, sans-serif;
  font-weight: 700;
}

.direction-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 13px;
}

.direction-card {
  padding: 22px;
  color: #fff;
  background: var(--bridge);
  border-radius: 12px;
}

.direction-card span {
  color: #efcf8c;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.direction-card h3 {
  margin: 5px 0 8px;
  color: #fff;
}

.direction-card p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 12px;
}

.faq-list {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list details:last-child {
  border-bottom: 0;
}

.faq-list summary {
  padding: 15px 44px 15px 17px;
  position: relative;
  color: var(--bridge-dark);
  cursor: pointer;
  font-size: 14px;
  list-style: none;
}

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

.faq-list summary::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 17px;
  color: var(--bridge-light);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 19px;
  transform: translateY(-50%);
}

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

.faq-list p {
  margin: 0;
  padding: 0 17px 16px;
  font-size: 11px;
}

.toll-calculator {
  padding: 23px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 230px;
  gap: 20px;
  background: #e6efeb;
  border: 1px solid #bfd3ca;
  border-radius: 13px;
}

.toll-fields {
  display: grid;
  grid-template-columns: minmax(210px, 1.5fr) repeat(2, minmax(95px, 0.55fr));
  gap: 12px;
}

.toll-fields label {
  color: #4c5954;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 10px;
  font-weight: 700;
}

.toll-fields select,
.toll-fields input[type="number"] {
  width: 100%;
  min-height: 42px;
  margin-top: 5px;
  padding: 9px 10px;
  color: var(--ink);
  background: #fff;
  border: 1px solid #adc4ba;
  border-radius: 6px;
  font: inherit;
}

.toll-fields .checkbox-label {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 400;
}

.checkbox-label input {
  width: 16px;
  height: 16px;
  accent-color: var(--bridge);
}

.toll-output {
  padding: 19px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: #fff;
  background: var(--bridge);
  border-radius: 10px;
}

.toll-output span {
  color: rgba(255, 255, 255, 0.66);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 8px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.toll-output strong {
  margin: 3px 0;
  font-size: 36px;
  font-weight: 400;
}

.toll-output small {
  color: rgba(255, 255, 255, 0.66);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 9px;
}

.related-section {
  margin-top: 55px;
}

.related-section h2 {
  color: var(--bridge-dark);
  font-size: 28px;
  font-weight: 400;
}

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

.related-grid a {
  padding: 18px;
  display: grid;
  gap: 4px;
  color: var(--bridge-dark);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  text-decoration: none;
}

.related-grid strong {
  font-size: 16px;
  font-weight: 400;
}

.related-grid span {
  color: #6d7773;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 9px;
}

.source-note {
  margin-top: 43px;
  padding: 16px 18px;
  color: #68736f;
  background: #ebe8df;
  border-radius: 8px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 9px;
}

.site-footer {
  padding: 28px 20px 40px;
  color: #747e7a;
  background: #e7e3da;
  border-top: 1px solid #d4d0c6;
  font-size: 10px;
  text-align: center;
}

.site-footer p {
  margin: 4px 0;
}

@media (max-width: 900px) {
  .content-grid {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .side-card + .side-card {
    margin-top: 0;
  }

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

  .toll-calculator {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 650px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .guide-shell {
    width: min(100% - 22px, 1100px);
    padding-top: 16px;
  }

  .guide-hero {
    padding: 28px 21px 42px;
    border-radius: 14px;
  }

  .answer-card {
    width: calc(100% - 20px);
    padding: 18px;
  }

  .fact-grid,
  .threshold-grid,
  .direction-cards,
  .related-grid,
  .sidebar,
  .toll-fields {
    grid-template-columns: 1fr;
  }

  .hero-actions,
  .hero-actions .button {
    width: 100%;
  }

  .toll-calculator {
    padding: 17px;
  }
}

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