/* Mud Race Field Guide
   Extends Hovercraft tokens with mud-orange accent */

:root {
  --primary-color: #3b82f6;
  --primary-dark: #2563eb;
  --primary-light: #60a5fa;
  --secondary-color: #94a3b8;
  --accent-color: #38bdf8;
  --mud-orange: #ea580c;
  --mud-orange-dark: #c2410c;
  --mud-orange-soft: rgba(234, 88, 12, 0.15);
  --mud-cream: #fef3c7;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-light: #94a3b8;
  --bg-primary: #0a0f1a;
  --bg-secondary: #0f172a;
  --bg-accent: #1e293b;
  --inverse-bg: #f1f5f9;
  --footer-bg: #020617;
  --success-color: #34d399;
  --warning-color: #fbbf24;
  --error-color: #f87171;
  --border-color: #334155;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --max-width: 1100px;
  --border-radius: 8px;
  --border-radius-lg: 12px;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-primary);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

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

a { color: var(--mud-orange); text-decoration: none; }
a:hover { color: #fb923c; text-decoration: underline; }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

/* Header */
.site-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  flex-wrap: wrap;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  min-width: 0;
}
.home-mark {
  flex: 0 0 auto;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.14);
}
.home-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.home-mark:hover { opacity: 0.9; }

.brand {
  display: flex;
  flex-direction: column;
  color: var(--text-primary);
  text-decoration: none;
}
.brand:hover { text-decoration: none; color: var(--text-primary); }
.brand-name { font-weight: 700; font-size: 1.05rem; color: var(--mud-orange); }
.brand-sub { font-size: 0.75rem; color: var(--text-light); }

.nav-links {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0.35rem 1rem;
  flex-wrap: wrap;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--mud-orange);
}

.btn-nav-cta {
  background: var(--mud-orange) !important;
  color: #fff !important;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.85rem !important;
}
.btn-nav-cta:hover {
  background: var(--mud-orange-dark) !important;
  text-decoration: none !important;
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.35rem 0.6rem;
  border-radius: 6px;
  cursor: pointer;
  min-height: 44px;
  min-width: 44px;
}

@media (max-width: 768px) {
  .menu-toggle { display: block; }
  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    padding-bottom: 0.75rem;
  }
  .nav-links.is-open { display: flex; }
}

/* Disclaimer */
.disclaimer-bar {
  background: #1c1a16;
  border-bottom: 1px solid #3f3a32;
  padding: 0.45rem 0;
  font-size: 0.85rem;
  color: #c4b8a4;
}
.disclaimer-bar details { margin: 0; }
.disclaimer-bar summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #e4d4b8;
  user-select: none;
  min-height: 1.75rem;
}
.disclaimer-bar summary::-webkit-details-marker { display: none; }
.disclaimer-bar summary::marker { content: ""; }
.disclaimer-bar summary::after {
  content: "";
  width: 0.42rem;
  height: 0.42rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.15s;
  flex-shrink: 0;
  margin-top: -0.12rem;
}
.disclaimer-bar details[open] summary::after {
  transform: rotate(225deg);
  margin-top: 0.12rem;
}
.disclaimer-bar details p {
  margin: 0.55rem 0 0.15rem;
  max-width: 72ch;
  line-height: 1.5;
}

/* Hero */
.hero {
  padding: var(--spacing-lg) 0 var(--spacing-md);
  background:
    radial-gradient(ellipse at top left, rgba(234, 88, 12, 0.18), transparent 50%),
    var(--bg-primary);
}

.hero-badge {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--success-color);
  background: rgba(52, 211, 153, 0.12);
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin: 0 0 0.75rem;
  line-height: 1.15;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 60ch;
  margin: 0 0 1rem;
}

.stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 1.5rem 0;
}

.stat {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 0.85rem 1.1rem;
  min-width: 110px;
}
.stat-num {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--mud-orange);
}
.stat-label {
  font-size: 0.8rem;
  color: var(--text-light);
}

.btn-group { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1rem; }

.btn {
  display: inline-block;
  padding: 0.7rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: var(--mud-orange);
  color: #fff;
}
.btn-primary:hover { background: var(--mud-orange-dark); color: #fff; }
.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}
.btn-secondary:hover {
  border-color: var(--mud-orange);
  color: var(--mud-orange);
}

/* Sections */
.section { padding: var(--spacing-md) 0; }
.section-alt { background: var(--bg-secondary); }
.section-label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mud-orange);
  margin-bottom: 0.5rem;
}
.section h2 {
  margin: 0 0 1rem;
  font-size: 1.75rem;
}

.callout {
  border-radius: var(--border-radius-lg);
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--border-color);
  background: var(--bg-accent);
  margin: 1rem 0;
}
.callout h3 { margin: 0 0 0.5rem; font-size: 1.05rem; }
.callout p { margin: 0.4rem 0; color: var(--text-secondary); }
.callout.warn {
  border-color: #9a3412;
  background: rgba(234, 88, 12, 0.08);
}
.callout.info {
  border-color: #1d4ed8;
  background: rgba(59, 130, 246, 0.08);
}
.callout.note {
  border-color: #a16207;
  background: rgba(251, 191, 36, 0.08);
}

.estimate-pill {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: rgba(251, 191, 36, 0.15);
  color: var(--warning-color);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  margin-right: 0.4rem;
}

.confidence-high { color: var(--success-color); }
.confidence-med { color: var(--warning-color); }
.confidence-low { color: var(--error-color); }

/* Obstacle cards */
.obstacle-list { display: flex; flex-direction: column; gap: 0.75rem; }

.obstacle-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

.obstacle-summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 1rem 1.15rem;
  cursor: pointer;
  width: 100%;
  background: transparent;
  border: none;
  color: inherit;
  text-align: left;
  font: inherit;
}
.obstacle-summary:hover { background: rgba(234, 88, 12, 0.06); }
.obstacle-summary:focus-visible {
  outline: 2px solid var(--mud-orange);
  outline-offset: -2px;
}

.obstacle-num {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--mud-orange-soft);
  color: var(--mud-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.obstacle-title-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem 0.75rem;
}
.obstacle-title-row h3 {
  margin: 0;
  font-size: 1.1rem;
}
.obstacle-meta {
  font-size: 0.8rem;
  color: var(--text-light);
  margin: 0.2rem 0 0;
}
.obstacle-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.4rem;
}
.tag {
  font-size: 0.7rem;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  background: var(--bg-accent);
  color: var(--text-light);
  border: 1px solid var(--border-color);
}
.tag-15k {
  background: rgba(234, 88, 12, 0.2);
  color: #fdba74;
  border-color: #9a3412;
}

.expand-icon {
  color: var(--text-light);
  font-size: 1.25rem;
  transition: transform 0.2s;
}
.obstacle-card.is-open .expand-icon { transform: rotate(180deg); }

.obstacle-body {
  display: none;
  border-top: 1px solid var(--border-color);
  padding: 1.25rem;
}
.obstacle-card.is-open .obstacle-body { display: block; }

.obstacle-media {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
  align-items: start;
}
@media (max-width: 600px) {
  .obstacle-media {
    grid-template-columns: 96px 1fr;
    gap: 0.75rem;
  }
}
.obstacle-img {
  width: 100%;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  background: var(--bg-accent);
  aspect-ratio: 1;
  object-fit: cover;
}
.obstacle-img-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 0.8rem;
  text-align: center;
  padding: 1rem;
}

.systems-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin: 0.75rem 0;
}
.systems-links > span {
  font-size: 0.75rem;
  color: var(--text-light);
}
.systems-links a {
  font-size: 0.75rem;
  color: var(--accent-color);
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0.2rem 0.65rem;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  background: var(--bg-accent);
  text-decoration: none;
}
.systems-links a:hover {
  border-color: var(--accent-color);
  text-decoration: none;
}

/* Tier panels */
.tier-toggle {
  display: none;
  gap: 0.35rem;
  position: sticky;
  top: 64px;
  z-index: 40;
  background: var(--bg-secondary);
  padding: 0.5rem 0;
  margin-bottom: 0.75rem;
}
.tier-toggle button {
  flex: 1;
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  background: var(--bg-accent);
  color: var(--text-secondary);
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
}
.tier-toggle button.is-active {
  background: var(--mud-orange);
  border-color: var(--mud-orange);
  color: #fff;
}

.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.tier-panel {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1rem;
}
.tier-panel h4 {
  margin: 0 0 0.65rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.tier-1 h4 { color: var(--success-color); }
.tier-2 h4 { color: var(--warning-color); }
.tier-3 h4 { color: var(--mud-orange); }
.tier-panel p, .tier-panel li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0.35rem 0;
}
.tier-panel ul { padding-left: 1.1rem; margin: 0.35rem 0; }
.tier-panel strong { color: var(--text-primary); }

@media (max-width: 900px) {
  .tier-toggle { display: flex; }
  .tier-grid { grid-template-columns: 1fr; }
  .tier-panel { display: none; }
  .tier-panel.is-active { display: block; }
}

.done-check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--text-light);
}
.done-check input { accent-color: var(--mud-orange); width: 1rem; height: 1rem; }

/* Body map */
.body-map-layout {
  display: grid;
  grid-template-columns: minmax(260px, 360px) 1fr;
  gap: 1.5rem;
  align-items: start;
}
@media (max-width: 800px) {
  .body-map-layout { grid-template-columns: 1fr; }
}

.body-view-tabs {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 0.65rem;
}
.body-view-tab {
  flex: 1;
  min-height: 44px;
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  background: var(--bg-accent);
  color: var(--text-secondary);
  border-radius: 6px;
  cursor: pointer;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
}
.body-view-tab:hover {
  border-color: var(--mud-orange);
  color: var(--text-primary);
}
.body-view-tab.is-active {
  background: var(--mud-orange);
  border-color: var(--mud-orange);
  color: #fff;
}

.body-svg-wrap {
  background: #0b1220;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 0.5rem 0.35rem 0.75rem;
  box-shadow: var(--shadow-md);
}

.body-figure {
  position: relative;
  isolation: isolate;
  display: none;
}
.body-figure.is-active { display: block; }
.body-figure-map {
  position: relative;
}

.body-figure-img {
  width: 100%;
  height: auto;
  display: block;
  pointer-events: none;
  user-select: none;
}

.body-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hotspot {
  cursor: pointer;
  fill: rgba(234, 88, 12, 0.22);
  stroke: var(--mud-orange);
  stroke-width: 6;
  transition: fill 0.15s;
}
@media (pointer: coarse) {
  .hotspot {
    stroke-width: 28;
    stroke-opacity: 0.35;
  }
}
.obstacle-summary {
  min-height: 64px;
}
.tier-toggle button {
  min-height: 44px;
}
.hotspot:hover,
.hotspot.is-active {
  fill: rgba(234, 88, 12, 0.5);
}
.hotspot-hit {
  cursor: pointer;
}
.hotspot-label-hit {
  fill: transparent;
}
.hotspot-label {
  fill: var(--text-primary);
  font-size: 34px;
  font-weight: 650;
  letter-spacing: 0.03em;
  pointer-events: none;
  paint-order: stroke;
  stroke: #0b1220;
  stroke-width: 7px;
  stroke-linejoin: round;
}
.hotspot-hit:hover .hotspot-label,
.hotspot-hit.is-active .hotspot-label {
  fill: var(--mud-orange);
}
.hotspot-label-right {
  text-anchor: end;
}
.hotspot-line {
  stroke: var(--mud-orange);
  stroke-width: 3;
  opacity: 0.75;
}

.system-panel {
  display: none;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 1.25rem 1.5rem;
}
.system-panel.is-active { display: block; }
.system-panel h3 { margin: 0 0 0.75rem; color: var(--mud-orange); }
.system-panel h4 {
  margin: 1rem 0 0.4rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-light);
}
.body-selected {
  margin: 0 0 0.65rem;
  font-size: 0.95rem;
  font-weight: 650;
  color: var(--mud-orange);
}
@media (min-width: 801px) {
  .body-selected { display: none; }
}

.system-list { list-style: none; padding: 0.35rem 0.25rem 0.15rem; margin: 0; }
.system-list li {
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  margin-bottom: 0.4rem;
  cursor: pointer;
  background: var(--bg-accent);
  min-height: 48px;
  display: flex;
  align-items: center;
}
.system-panel h4 + p a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0.2rem 0.65rem;
  margin: 0.15rem 0.1rem 0.15rem 0;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  background: var(--bg-accent);
  text-decoration: none;
  font-size: 0.85rem;
}
.system-panel h4 + p a:hover { text-decoration: none; border-color: var(--mud-orange); }

.obstacle-card,
.system-panel {
  scroll-margin-top: 5.5rem;
}
.system-list li:hover,
.system-list li.is-active {
  border-color: var(--mud-orange);
  background: var(--mud-orange-soft);
}

/* Plan builder */
.plan-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}
.plan-form label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--text-light);
}
.plan-form select,
.plan-form input {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.55rem 0.65rem;
  border-radius: 6px;
  font: inherit;
}
.plan-output {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 1.25rem;
}
.plan-output table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1rem 0;
}
.plan-output th,
.plan-output td {
  border: 1px solid var(--border-color);
  padding: 0.55rem 0.65rem;
  text-align: left;
  vertical-align: top;
}
.plan-output th { background: var(--bg-accent); color: var(--mud-orange); }

.benchmark-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}
.benchmark-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1rem;
}
.benchmark-card h3 { margin: 0 0 0.5rem; font-size: 1rem; }
.benchmark-card table { width: 100%; font-size: 0.85rem; border-collapse: collapse; }
.benchmark-card td, .benchmark-card th {
  padding: 0.35rem 0.25rem;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
}

/* Prediction / sources */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
}
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 1.15rem;
}
.card h3 { margin: 0 0 0.5rem; font-size: 1.05rem; }
.card p { margin: 0.4rem 0; color: var(--text-secondary); font-size: 0.95rem; }
.card-eyebrow {
  font-size: 0.75rem;
  color: var(--mud-orange);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 0.35rem;
}

a.card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, transform 0.15s;
}
a.card:hover {
  border-color: var(--mud-orange);
  text-decoration: none;
  transform: translateY(-2px);
}
a.card:hover h3 { color: var(--mud-orange); }
a.card .card-meta {
  margin-top: auto;
  padding-top: 0.75rem;
  color: var(--mud-orange);
  font-weight: 600;
  font-size: 0.875rem;
}

.how-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: how;
}
.how-list li {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 1.15rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}
.how-list li::before {
  counter-increment: how;
  content: counter(how);
  display: block;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--mud-orange);
  margin-bottom: 0.4rem;
}
@media (max-width: 700px) {
  .how-list { grid-template-columns: 1fr; }
}

.sources-list,
.source-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.sources-list li,
.source-list li {
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.9rem;
}
.sources-list a,
.source-list a { word-break: break-word; }

.card-grid.three {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.table-wrap {
  overflow-x: auto;
  margin: 1rem 0;
}
.table-wrap table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.table-wrap th,
.table-wrap td {
  padding: 0.55rem 0.65rem;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
  vertical-align: top;
}
.table-wrap th {
  background: var(--bg-accent);
  color: var(--mud-orange);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.checklist-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin: 1rem 0;
}
.checklist-grid h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  color: var(--mud-orange);
}
.checklist {
  list-style: none;
  padding: 0;
  margin: 0;
}
.checklist li {
  position: relative;
  padding: 0.4rem 0 0.4rem 1.6rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  border-bottom: 1px solid var(--border-color);
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65rem;
  width: 0.9rem;
  height: 0.9rem;
  border: 1.5px solid var(--mud-orange);
  border-radius: 3px;
}

/* Footer */
.site-footer {
  background: var(--footer-bg);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-md) 0 var(--spacing-sm);
  margin-top: var(--spacing-lg);
  font-size: 0.9rem;
}
.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}
.footer-col h4 { margin: 0 0 0.5rem; color: var(--mud-orange); font-size: 0.95rem; }
.footer-col p, .footer-col li { color: var(--text-light); margin: 0.3rem 0; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col a { color: var(--text-secondary); }
.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 1rem;
  color: var(--text-light);
  font-size: 0.8rem;
}
.footer-bottom p { margin: 0.35rem 0; }

.progress-bar-wrap {
  margin: 1rem 0;
  background: var(--bg-accent);
  border-radius: 999px;
  height: 8px;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  background: var(--mud-orange);
  width: 0%;
  transition: width 0.25s;
}
.progress-label {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 0.35rem;
}

/* Interval timer */
.timer-hero { padding-bottom: 0.5rem; }
.timer-section { padding-top: 1.25rem; }
.timer-wrap { max-width: 760px; }

.timer-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.timer-preset {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: 999px;
  padding: 0.4rem 0.85rem;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}
.timer-preset:hover { border-color: var(--mud-orange); color: var(--mud-orange); }
.timer-preset.is-active {
  background: var(--mud-orange);
  border-color: var(--mud-orange);
  color: #fff;
}

.timer-settings {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.65rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 1rem;
}
.timer-settings label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-light);
}
.timer-settings input {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: 6px;
  padding: 0.55rem 0.45rem;
  font: inherit;
  font-size: 1.15rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  width: 100%;
}
.timer-settings input:disabled { opacity: 0.55; }
.timer-total {
  margin: 0.75rem 0 1rem;
  color: var(--text-light);
  font-size: 0.9rem;
}

.timer-stage {
  border-radius: 20px;
  min-height: 320px;
  padding: 2rem 1.25rem 1.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.timer-phase {
  margin: 0;
  font-size: clamp(1.1rem, 3vw, 1.6rem);
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-light);
}
.timer-clock {
  margin: 0.15rem 0;
  font-size: clamp(5rem, 22vw, 10rem);
  font-weight: 800;
  line-height: 0.95;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.04em;
  color: var(--text-primary);
}
.timer-meta,
.timer-left {
  margin: 0.25rem 0;
  color: var(--text-secondary);
}
.timer-track {
  position: relative;
  width: 100%;
  max-width: 34rem;
  margin: 0.85rem 0 0.45rem;
  padding-top: 2.7rem;
  touch-action: none;
  user-select: none;
}
.timer-track-bar {
  display: flex;
  height: 1.35rem;
  border-radius: 7px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.28);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.2);
}
.timer-seg {
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid rgba(0, 0, 0, 0.22);
}
.timer-seg:last-child { border-right: none; }
.timer-seg-prep { background: #ea580c; }
.timer-seg-work { background: #cbd5e1; }
.timer-seg-rest { background: #64748b; }
.timer-seg-setrest { background: #0f172a; }
.timer-seg-idle { background: #334155; }
.timer-seg-label {
  font-size: 0.68rem;
  font-weight: 800;
  color: #0f172a;
  line-height: 1;
  pointer-events: none;
}
.timer-seg-rest .timer-seg-label,
.timer-seg-setrest .timer-seg-label {
  color: #f8fafc;
}
.timer-playhead {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  width: 2.6rem;
  height: 2.7rem;
  padding: 0;
  border: none;
  background: transparent;
  transform: translateX(-50%);
  cursor: grab;
  touch-action: none;
}
.timer-playhead:active { cursor: grabbing; }
.timer-playhead:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
  border-radius: 8px;
}
.timer-stick {
  width: 1.7rem;
  height: 2.1rem;
  display: block;
  margin: 0 auto;
  fill: none;
  stroke: #0f172a;
  stroke-width: 2.1;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 0 2px #fff) drop-shadow(0 1px 2px rgba(0, 0, 0, 0.35));
}
.timer-stick circle {
  fill: #0f172a;
  stroke: #0f172a;
}
.timer-playhead-arrow {
  display: block;
  width: 0;
  height: 0;
  margin: -0.12rem auto 0;
  border-left: 0.38rem solid transparent;
  border-right: 0.38rem solid transparent;
  border-top: 0.42rem solid #0f172a;
  filter: drop-shadow(0 0 1px #fff);
}

.timer-stage[data-phase="prep"] {
  background: #d97706;
  border-color: #b45309;
  color: #1c1003;
}
.timer-stage[data-phase="work"] {
  background: #059669;
  border-color: #047857;
}
.timer-stage[data-phase="rest"] {
  background: #dc2626;
  border-color: #b91c1c;
}
.timer-stage[data-phase="setrest"] {
  background: #2563eb;
  border-color: #1d4ed8;
}
.timer-stage[data-phase="done"] {
  background: #0f172a;
  border-color: #34d399;
}
.timer-stage[data-phase="prep"] .timer-phase,
.timer-stage[data-phase="prep"] .timer-clock,
.timer-stage[data-phase="prep"] .timer-meta,
.timer-stage[data-phase="prep"] .timer-left {
  color: #1c1003;
}
.timer-stage[data-phase="work"] .timer-phase,
.timer-stage[data-phase="work"] .timer-clock,
.timer-stage[data-phase="work"] .timer-meta,
.timer-stage[data-phase="work"] .timer-left,
.timer-stage[data-phase="rest"] .timer-phase,
.timer-stage[data-phase="rest"] .timer-clock,
.timer-stage[data-phase="rest"] .timer-meta,
.timer-stage[data-phase="rest"] .timer-left,
.timer-stage[data-phase="setrest"] .timer-phase,
.timer-stage[data-phase="setrest"] .timer-clock,
.timer-stage[data-phase="setrest"] .timer-meta,
.timer-stage[data-phase="setrest"] .timer-left {
  color: #fff;
}
.timer-stage[data-phase="done"] .timer-phase { color: #34d399; }

.timer-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.15rem;
  justify-content: center;
  align-items: center;
}
.timer-controls .btn { min-width: 7.5rem; }
.timer-controls .btn-icon {
  min-width: 3.4rem;
  width: 3.4rem;
  height: 3.4rem;
  padding: 0;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}
.timer-controls .btn-icon.btn-primary {
  width: 4.15rem;
  height: 4.15rem;
}
.timer-controls .btn-icon svg {
  width: 1.45rem;
  height: 1.45rem;
  fill: currentColor;
  display: block;
}
.timer-controls .btn-icon.btn-primary svg {
  width: 1.7rem;
  height: 1.7rem;
}
.timer-controls .btn-icon .icon-again,
.timer-controls .btn-icon .icon-resume,
.timer-controls .btn-icon .icon-muted,
.timer-controls .btn-icon.is-again .icon-play,
.timer-controls .btn-icon.is-paused .icon-pause,
.timer-controls .btn-icon.is-muted .icon-sound {
  display: none;
}
.timer-controls .btn-icon.is-again .icon-again,
.timer-controls .btn-icon.is-paused .icon-resume,
.timer-controls .btn-icon.is-muted .icon-muted {
  display: block;
}
.timer-controls [hidden],
.timer-controls-secondary [hidden] {
  display: none !important;
}
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}
.btn-ghost:hover { color: var(--text-primary); border-color: var(--text-light); }
.timer-keys {
  text-align: center;
  color: var(--text-light);
  font-size: 0.8rem;
  margin: 0.85rem 0 0;
}
@media (pointer: coarse) {
  .timer-keys { display: none; }
}

.timer-watermark {
  display: none;
}
.page-timer.is-timing .timer-watermark {
  display: block;
  position: fixed;
  top: max(0.4rem, env(safe-area-inset-top, 0px));
  left: 0;
  right: 0;
  z-index: 80;
  margin: 0;
  text-align: center;
  font-size: 0.7rem;
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(226, 232, 240, 0.5);
  pointer-events: none;
}

.page-timer.is-timing .timer-hero,
.page-timer.is-timing .site-header,
.page-timer.is-timing .disclaimer-bar,
.page-timer.is-timing .site-footer,
.page-timer.is-timing .timer-presets,
.page-timer.is-timing .timer-settings,
.page-timer.is-timing .timer-total,
.page-timer.is-timing .timer-keys {
  display: none;
}
.page-timer.is-timing .timer-section { padding-top: 1.45rem; }
.page-timer.is-timing .timer-stage {
  min-height: min(70vh, 640px);
}

@media (max-width: 700px) {
  .timer-settings { grid-template-columns: repeat(3, 1fr); }
  .timer-controls .btn { flex: 1; min-width: 0; }
  .timer-controls .btn-icon { flex: 0 0 auto; }
}
@media (max-width: 420px) {
  .timer-settings { grid-template-columns: repeat(2, 1fr); }
}

/* One-screen timer on phones */
@media (max-width: 768px) {
  .page-timer {
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
  }
  .page-timer .site-nav { padding: 0.45rem 0; }
  .page-timer .brand-sub { display: none; }
  .page-timer .disclaimer-bar {
    padding: 0.2rem 0;
    font-size: 0.72rem;
  }
  .page-timer .disclaimer-bar summary {
    min-height: 1.35rem;
    letter-spacing: 0;
  }
  .page-timer .hero,
  .page-timer .timer-hero {
    padding: 0.65rem 0 0.15rem;
  }
  .page-timer .hero h1 {
    font-size: 1.35rem;
    margin: 0 0 0.2rem;
  }
  .page-timer .hero-subtitle {
    font-size: 0.82rem;
    margin: 0;
    line-height: 1.35;
  }
  .page-timer .timer-hero p:not(.hero-subtitle) { display: none; }
  .page-timer main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
  }
  .page-timer .timer-section {
    padding: 0.45rem 0 calc(0.85rem + env(safe-area-inset-bottom, 0px));
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
  }
  .page-timer .timer-section > .container {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
  }
  .page-timer .timer-presets {
    margin-bottom: 0.45rem;
    gap: 0.35rem;
    flex-wrap: nowrap;
  }
  .page-timer .timer-preset {
    flex: 1;
    padding: 0.32rem 0.2rem;
    font-size: 0.72rem;
    text-align: center;
    white-space: nowrap;
  }
  .page-timer .timer-settings {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.4rem;
    padding: 0.55rem;
  }
  .page-timer .timer-settings label { font-size: 0.65rem; gap: 0.2rem; }
  .page-timer .timer-settings input {
    padding: 0.32rem 0.25rem;
    font-size: 1rem;
  }
  .page-timer .timer-total {
    margin: 0.4rem 0 0.45rem;
    font-size: 0.8rem;
  }
  .page-timer .timer-stage {
    flex: 1;
    min-height: 9.5rem;
    padding: 0.7rem 0.75rem 0.55rem;
  }
  .page-timer .timer-phase {
    font-size: 0.95rem;
    letter-spacing: 0.1em;
  }
  .page-timer .timer-clock {
    font-size: clamp(3.4rem, 16vw, 5.5rem);
  }
  .page-timer .timer-meta,
  .page-timer .timer-left {
    margin: 0.1rem 0;
    font-size: 0.85rem;
  }
  .page-timer .timer-track {
    margin: 0.35rem 0 0.2rem;
    padding-top: 2.45rem;
  }
  .page-timer .timer-track-bar { height: 1.15rem; }
  .page-timer .timer-controls {
    margin-top: 0.55rem;
    gap: 0.4rem;
  }
  .page-timer .timer-controls .btn {
    padding: 0.58rem 0.7rem;
    font-size: 0.88rem;
  }
  .page-timer .timer-controls .btn-icon {
    padding: 0;
    width: 3.6rem;
    height: 3.6rem;
  }
  .page-timer .timer-controls .btn-icon.btn-primary {
    width: 4.4rem;
    height: 4.4rem;
  }
  .page-timer .timer-controls-secondary { margin-top: 0.4rem; }
  .page-timer .timer-keys { display: none; }
  .page-timer .site-footer { display: none; }
  .page-timer.is-timing .site-header,
  .page-timer.is-timing .disclaimer-bar { display: none; }
  .page-timer.is-timing .timer-section { padding-top: 1.45rem; }
  .page-timer.is-timing .timer-stage {
    min-height: 0;
    padding: 1.15rem 0.75rem 1rem;
  }
  .page-timer.is-timing .timer-phase {
    font-size: clamp(1.85rem, 7.6vw, 2.6rem);
    letter-spacing: 0.16em;
  }
  .page-timer.is-timing .timer-clock {
    font-size: clamp(6.6rem, min(33vw, 26vh), 9.5rem);
    margin: 0.3rem 0 0.15rem;
  }
  .page-timer.is-timing .timer-meta,
  .page-timer.is-timing .timer-left {
    font-size: clamp(1.35rem, 5vw, 1.7rem);
    margin: 0.28rem 0;
  }
  .page-timer.is-timing .timer-track {
    margin: 0.55rem 0 0.3rem;
    padding-top: 2.8rem;
  }
  .page-timer.is-timing .timer-track-bar { height: 1.45rem; }
  .page-timer.is-timing .timer-seg-label { font-size: 0.78rem; }
}

@media (max-width: 768px) and (max-height: 700px) {
  .page-timer .hero h1 { font-size: 1.15rem; }
  .page-timer .timer-settings { padding: 0.4rem; gap: 0.3rem; }
  .page-timer .timer-settings input { padding: 0.22rem 0.2rem; font-size: 0.95rem; }
  .page-timer .timer-stage { min-height: 7.5rem; padding: 0.45rem 0.6rem; }
  .page-timer .timer-clock { font-size: clamp(2.8rem, 14vw, 4.4rem); }
  .page-timer .timer-controls .btn { padding: 0.48rem 0.55rem; }
  .page-timer .timer-controls .btn-icon { padding: 0; }
  .page-timer.is-timing .timer-phase {
    font-size: clamp(1.55rem, 6.4vw, 2.1rem);
  }
  .page-timer.is-timing .timer-clock {
    font-size: clamp(6rem, min(36vw, 24vh), 9rem);
  }
  .page-timer.is-timing .timer-meta,
  .page-timer.is-timing .timer-left {
    font-size: clamp(1.2rem, 4.4vw, 1.45rem);
  }
}

@media (max-width: 360px) {
  .page-timer .timer-preset { font-size: 0.64rem; padding: 0.28rem 0.12rem; }
}

@media (max-width: 800px) {
  .hero {
    padding: 1.5rem 0 1.15rem;
  }
  .hero h1 {
    font-size: 1.75rem;
  }
  .hero-subtitle {
    font-size: 1rem;
  }
  .section {
    padding: 1.25rem 0;
  }
  .section h2 {
    font-size: 1.35rem;
  }
  .callout {
    padding: 1rem 1.1rem;
  }
  .stat-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.65rem;
    margin: 1rem 0;
  }
  .stat {
    min-width: 0;
    padding: 0.7rem 0.85rem;
  }
  .btn-group {
    flex-direction: column;
  }
  .btn-group .btn {
    width: 100%;
    text-align: center;
    min-height: 44px;
  }

  .obstacle-summary {
    grid-template-columns: auto 1fr auto;
    gap: 0.7rem;
    padding: 0.85rem 0.9rem;
  }
  .obstacle-num {
    width: 2rem;
    height: 2rem;
    font-size: 0.8rem;
  }
  .obstacle-title-row h3 {
    font-size: 1rem;
  }
  .obstacle-body {
    padding: 1rem 0.9rem;
  }
  .tier-toggle {
    top: 4.6rem;
    gap: 0.3rem;
    margin-left: -0.15rem;
    margin-right: -0.15rem;
  }
  .tier-toggle button {
    font-size: 0.8rem;
    padding: 0.45rem 0.3rem;
  }

  .body-view-tabs {
    position: sticky;
    top: 4.55rem;
    z-index: 45;
    background: var(--bg-primary);
    padding: 0.45rem 0 0.5rem;
    margin-bottom: 0.5rem;
  }
  .body-map-layout {
    gap: 1rem;
  }
  .body-svg-wrap {
    padding: 0.35rem 0.2rem 0.5rem;
  }
  .hotspot-label {
    font-size: 46px;
  }
  .hotspot {
    stroke-width: 32;
    stroke-opacity: 0.4;
  }
  .system-panel {
    padding: 1.1rem 1rem;
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: 1.15rem;
  }
}

@media (max-width: 420px) {
  .container {
    padding: 0 0.85rem;
  }
  .obstacle-media {
    grid-template-columns: 80px 1fr;
  }
  .obstacle-meta {
    font-size: 0.75rem;
  }
  .estimate-pill {
    font-size: 0.62rem;
  }
}