:root {
  --bg-canvas: #f3e9d8;
  --bg-surface: #e7dac3;
  --bg-card: rgba(231, 218, 195, 0.82);
  --text-primary: #262626;
  --text-muted: #575249;
  --accent-primary: #0e6e8c;
  --accent-hover: #094e63;
  --border-rule: #c8b99f;
  --border-dark: #262626;
  --font-display: Georgia, "Times New Roman", serif;
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --shadow-offset: 4px 4px 0px #262626;
  --ease-kinetic: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  padding: 16px;
  overflow-wrap: anywhere;
  hyphens: auto;
}

.document-frame {
  max-width: 1240px;
  margin: 0 auto;
  border: 1px solid var(--border-rule);
  background-color: var(--bg-canvas);
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header & Navigation */
header.site-header {
  border-bottom: 2px solid var(--border-dark);
  background-color: var(--bg-surface);
  position: relative;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-rule);
}

.brand-wrapper {
  text-align: left;
}

.brand-link {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
  display: inline-block;
}

.brand-sub {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-dark);
  font-size: 1.5rem;
  line-height: 1;
  padding: 4px 10px;
  cursor: pointer;
  color: var(--text-primary);
}

nav.main-nav {
  padding: 10px 24px;
  background: var(--bg-surface);
}

.nav-links {
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 6px 10px;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  border: 1px solid var(--border-dark);
  background: var(--bg-canvas);
  color: var(--accent-primary);
}

/* Layout Utilities */
main {
  flex: 1 0 auto;
}

.content-wrapper {
  max-width: 1120px;
  margin: 0 auto;
  padding: 40px 24px;
}

.reading-wrapper {
  max-width: 72ch;
  margin: 0 auto;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: normal;
  color: var(--text-primary);
  line-height: 1.25;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  margin-bottom: 20px;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  margin-top: 36px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-rule);
  padding-bottom: 8px;
}

h3 {
  font-size: 1.3rem;
  margin-top: 24px;
  margin-bottom: 12px;
}

p {
  margin-bottom: 18px;
}

ul, ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

li {
  margin-bottom: 8px;
}

/* Buttons */
.btn-ocean {
  display: inline-block;
  background-color: var(--accent-primary);
  color: #ffffff;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 700;
  padding: 12px 24px;
  border: 2px solid var(--border-dark);
  border-radius: 0;
  box-shadow: var(--shadow-offset);
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.1s ease;
}

.btn-ocean:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0px #262626;
  background-color: var(--accent-hover);
}

.btn-ocean:active {
  transform: translate(4px, 4px);
  box-shadow: none;
}

/* Hero Section */
.hero-band {
  background-color: var(--bg-surface);
  border-bottom: 2px solid var(--border-dark);
  padding: 48px 24px;
}

.hero-band .inner {
  max-width: 1040px;
  margin: 0 auto;
}

.hero-band p.lead {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 68ch;
  margin-bottom: 24px;
}

/* Strips & Stat Panels */
.kelvin-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  border: 1px solid var(--border-dark);
  background: var(--bg-canvas);
  margin: 32px 0;
}

.strip-cell {
  padding: 16px;
  border-right: 1px solid var(--border-rule);
  border-bottom: 1px solid var(--border-rule);
  text-align: center;
}

.strip-cell:last-child {
  border-right: none;
}

.strip-cell .temp-tag {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: bold;
  display: block;
}

.strip-cell .label {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

/* Cards & Bento */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin: 32px 0;
}

.milky-card {
  background: var(--bg-card);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-rule);
  padding: 24px;
  border-radius: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.milky-card h3 {
  margin-top: 0;
}

.milky-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border: 1px solid var(--border-rule);
  margin-bottom: 16px;
}

/* Accordion */
.accordion {
  border: 1px solid var(--border-dark);
  margin: 28px 0;
}

.accordion-item {
  border-bottom: 1px solid var(--border-rule);
}

.accordion-item:last-child {
  border-bottom: none;
}

.accordion-header {
  width: 100%;
  padding: 16px 20px;
  background: var(--bg-surface);
  border: none;
  text-align: left;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: bold;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.accordion-content {
  display: none;
  padding: 20px;
  background: var(--bg-canvas);
  border-top: 1px dashed var(--border-rule);
}

.accordion-item.open .accordion-content {
  display: block;
}

/* Interactive Calculator */
.tool-panel {
  border: 2px solid var(--border-dark);
  background: var(--bg-surface);
  padding: 32px;
  margin: 40px 0;
  box-shadow: var(--shadow-offset);
}

.calc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.control-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 0.9rem;
  text-transform: uppercase;
}

.control-group select {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border-dark);
  background: var(--bg-canvas);
  color: var(--text-primary);
  font-size: 1rem;
  border-radius: 0;
}

.calc-output {
  background: var(--bg-canvas);
  border: 1px solid var(--border-dark);
  padding: 20px;
  margin-top: 16px;
}

.calc-output .value-display {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--accent-primary);
  font-weight: bold;
}

/* Tables */
.table-wrapper {
  overflow-x: auto;
  margin: 28px 0;
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
  border: 1px solid var(--border-dark);
}

table.data-table th, table.data-table td {
  padding: 12px 16px;
  border: 1px solid var(--border-rule);
}

table.data-table th {
  background: var(--bg-surface);
  font-family: var(--font-display);
  font-weight: 700;
}

table.data-table tr:nth-child(even) {
  background: rgba(231, 218, 195, 0.4);
}

/* Contact Form */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
}

.form-group input, .form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border-dark);
  background: var(--bg-surface);
  color: var(--text-primary);
  border-radius: 0;
}

.tool-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
}

/* Footer */
footer.site-footer {
  border-top: 2px solid var(--border-dark);
  background: var(--bg-surface);
  padding: 40px 24px;
  margin-top: auto;
  font-size: 0.88rem;
}

.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
}

.footer-block h4 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: bold;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.footer-nav li {
  margin-bottom: 8px;
}

.footer-nav a {
  color: var(--text-primary);
  text-decoration: underline;
}

.footer-nav a:hover {
  color: var(--accent-primary);
}

.footer-legal-bar {
  max-width: 1120px;
  margin: 32px auto 0 auto;
  padding-top: 20px;
  border-top: 1px solid var(--border-rule);
  text-align: center;
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  nav.main-nav {
    display: none;
    border-top: 1px solid var(--border-rule);
  }

  nav.main-nav.open {
    display: block;
  }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 12px 0;
  }

  .nav-links a {
    text-align: left;
    display: block;
  }

  .tool-panel {
    padding: 20px;
  }
}

@media (prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}