:root {
  --bg-canvas: #ffffff;
  --bg-surface: #f1f5f9;
  --bg-surface-translucent: rgba(241, 245, 249, 0.88);
  --bg-surface-hover: #e2e8f0;
  --text-primary: #1e293b;
  --text-muted: #475569;
  --text-dim: #64748b;
  --accent-primary: #1d4ed8;
  --accent-hover: #1e40af;
  --accent-muted: #dbeafe;
  --border-subtle: #cbd5e1;
  --border-glass: rgba(203, 213, 225, 0.7);
  --ease-kinetic: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-elevation: 0 10px 25px -5px rgba(30, 41, 59, 0.1);
  --shadow-hover: 0 20px 30px -8px rgba(29, 78, 216, 0.15);
  --glow-accent: 0 0 18px -2px rgba(29, 78, 216, 0.35);
  --glass-backdrop: blur(12px) saturate(160%);
  --font-serif: "Charter", "Bitstream Charter", "Sitka Text", "Cambria", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius-subtle: 4px;
}

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

body {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.65;
  overflow-wrap: anywhere;
  hyphens: auto;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .brand-text {
  font-family: var(--font-serif);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  line-height: 1.25;
}

h1 { font-size: clamp(2rem, 3.8vw, 3.2rem); margin-bottom: 1.2rem; }
h2 { font-size: clamp(1.6rem, 2.6vw, 2.2rem); margin-bottom: 1rem; }
h3 { font-size: clamp(1.2rem, 1.8vw, 1.5rem); margin-bottom: 0.6rem; }

p { margin-bottom: 1.2rem; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color 0.2s var(--ease-kinetic);
}
a:hover { color: var(--accent-hover); }

img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: var(--radius-subtle);
}

.utility-chip {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-primary);
  background-color: var(--accent-muted);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-subtle);
  margin-bottom: 0.8rem;
}

.site-header {
  position: static;
  background-color: var(--bg-canvas);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1rem 1.5rem;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-logo-mark {
  width: 32px;
  height: 32px;
  background-color: var(--accent-primary);
  border-radius: var(--radius-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 900;
  font-family: var(--font-sans);
  font-size: 1rem;
}

.brand-text {
  font-size: 1.25rem;
  color: var(--text-primary);
  text-transform: lowercase;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 1.8rem;
}

.primary-nav a {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-primary);
  padding: 0.3rem 0;
  position: relative;
}

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

.primary-nav a.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--accent-primary);
}

.mobile-menu-trigger {
  display: none;
  background: none;
  border: none;
  font-size: 1.8rem;
  line-height: 1;
  color: var(--text-primary);
  cursor: pointer;
  padding: 0.2rem 0.5rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: #ffffff !important;
  background-color: var(--accent-primary);
  border: none;
  border-radius: 9999px;
  padding: 0.75rem 1.6rem;
  cursor: pointer;
  transition: transform 0.2s var(--ease-kinetic), background-color 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-elevation), var(--glow-accent);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 9999px;
  padding: 0.75rem 1.6rem;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.btn-secondary:hover {
  background-color: var(--bg-surface-hover);
  border-color: var(--text-dim);
}

.page-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

.hero-bento {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 1.5rem;
  margin-bottom: 3.5rem;
  align-items: stretch;
}

.hero-main-card {
  position: relative;
  background-color: var(--bg-surface);
  border-radius: var(--radius-subtle);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 440px;
}

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

.hero-media-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: contrast(110%) brightness(85%);
}

.hero-overlay-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.1) 0%, rgba(15, 23, 42, 0.9) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 2.5rem;
  color: #ffffff;
}

.hero-content h1 {
  color: #ffffff;
  margin-bottom: 0.8rem;
}

.hero-content p {
  color: #f1f5f9;
  font-size: 1.15rem;
  max-width: 58ch;
  margin-bottom: 1.5rem;
}

.hero-side-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-subtle);
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  backdrop-filter: var(--glass-backdrop);
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.bento-cell {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-subtle);
  padding: 2rem;
  transition: transform 0.25s var(--ease-kinetic), box-shadow 0.25s var(--ease-kinetic), border-color 0.2s ease;
  display: flex;
  flex-direction: column;
}

.bento-cell:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent-primary);
}

.col-4 { grid-column: span 4; }
.col-6 { grid-column: span 6; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

.bento-img-frame {
  margin: -2rem -2rem 1.5rem -2rem;
  height: 220px;
  overflow: hidden;
  border-top-left-radius: var(--radius-subtle);
  border-top-right-radius: var(--radius-subtle);
}

.bento-img-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.bento-cell:hover .bento-img-frame img {
  transform: scale(1.03);
}

.lead-p {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 68ch;
}

.section-head {
  margin-bottom: 2rem;
}

.section-head h2 {
  font-size: 1.85rem;
  margin-bottom: 0.5rem;
}

.section-head p {
  color: var(--text-muted);
  max-width: 70ch;
}

.editorial-body {
  max-width: 72ch;
  margin: 0 auto;
}

.editorial-body h2 {
  margin-top: 2.5rem;
  border-bottom: 2px solid var(--bg-surface-hover);
  padding-bottom: 0.5rem;
}

.editorial-body h3 {
  margin-top: 1.8rem;
}

.editorial-body ul, .editorial-body ol {
  margin: 1rem 0 1.5rem 1.8rem;
}

.editorial-body li {
  margin-bottom: 0.5rem;
}

.data-table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 2rem 0;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-subtle);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

th, td {
  padding: 0.9rem 1.2rem;
  border-bottom: 1px solid var(--border-subtle);
}

th {
  background-color: var(--bg-surface);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}

tr:last-child td {
  border-bottom: none;
}

tr:nth-child(even) td {
  background-color: rgba(241, 245, 249, 0.4);
}

.calculator-panel {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-subtle);
  padding: 2.2rem;
  margin: 3rem 0;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.calc-control label {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  color: var(--text-muted);
}

.calc-control select, .calc-control input {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-subtle);
  background-color: #ffffff;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
}

.calc-result-box {
  background-color: #ffffff;
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--accent-primary);
  border-radius: var(--radius-subtle);
  padding: 1.5rem;
  margin-top: 1.5rem;
}

.calc-result-box h4 {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-primary);
  margin-bottom: 0.5rem;
}

.faq-item {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-subtle);
  margin-bottom: 1rem;
  background-color: var(--bg-surface);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 1.3rem 1.5rem;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq-icon {
  font-size: 1.25rem;
  transition: transform 0.2s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  display: none;
  padding: 0 1.5rem 1.5rem 1.5rem;
  color: var(--text-muted);
}

.faq-item.active .faq-answer {
  display: block;
}

.site-footer {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 3.5rem 1.5rem 2rem 1.5rem;
  margin-top: 4rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand-title {
  font-size: 1.2rem;
  margin-bottom: 0.8rem;
}

.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 1.2rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.6rem;
}

.footer-col a {
  color: var(--text-muted);
  font-size: 0.95rem;
}

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

.footer-legal-notice {
  font-size: 0.85rem;
  color: var(--text-dim);
  border-top: 1px solid var(--border-subtle);
  padding-top: 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-meta-line {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s var(--ease-kinetic), transform 0.6s var(--ease-kinetic);
}

.reveal-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .hero-bento { grid-template-columns: 1fr; }
  .col-8, .col-6, .col-4 { grid-column: span 12; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .calc-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .mobile-menu-trigger { display: block; }
  .primary-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-canvas);
    border-bottom: 2px solid var(--accent-primary);
    box-shadow: var(--shadow-elevation);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.2rem 1.5rem;
    gap: 1rem;
    z-index: 99;
  }
  .primary-nav.nav-expanded {
    display: flex;
  }
  .footer-top { grid-template-columns: 1fr; gap: 2rem; }
}

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