:root {
  --bg-canvas: #eef7f2;
  --bg-surface: #ffffff;
  --bg-surface-hover: #f7fcf9;
  --text-primary: #1f2937;
  --text-muted: #4b5563;
  --accent-primary: #14532d;
  --accent-secondary: #166534;
  --accent-soft: #dcfce7;
  --border-subtle: #c8e2d2;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, Consolas, "Liberation Mono", Menlo, monospace;
  --ease-kinetic: cubic-bezier(0.16, 1, 0.3, 1);
  --radius-card: 20px;
}

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

html {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background-color: var(--bg-canvas);
  line-height: 1.7;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 28px;
  overflow-wrap: anywhere;
  hyphens: auto;
}

.page-frame {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  background-color: var(--bg-canvas);
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px 48px;
}

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

.reading-width {
  max-width: 70ch;
  margin: 0 auto;
}

/* Header & Navigation */
.site-header {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  border-bottom: 1px solid var(--border-subtle);
  gap: 24px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--accent-primary);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.brand-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background-color: var(--accent-primary);
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.desktop-nav {
  display: flex;
  flex: 1;
  justify-content: space-between;
  align-items: center;
  margin-left: 32px;
}

.nav-group {
  display: flex;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 4px 0;
}

.nav-link::after, .text-action::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-primary);
  transition: width 0.3s var(--ease-kinetic);
}

.nav-link:hover::after, .nav-link[aria-current="page"]::after, .text-action:hover::after {
  width: 100%;
}

.mobile-menu-btn {
  display: none;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 8px 14px;
  font-size: 1.3rem;
  line-height: 1;
  color: var(--accent-primary);
  cursor: pointer;
}

.mobile-dropdown {
  display: none;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 20px;
  margin-top: 12px;
}

.mobile-dropdown.is-open {
  display: block;
}

.mobile-dropdown ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

/* Typography */
h1, h2, h3, h4 {
  color: var(--text-primary);
  line-height: 1.25;
  margin-top: 0;
}

h1 {
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.1rem);
  margin-bottom: 16px;
}

h3 {
  font-size: 1.35rem;
  margin-bottom: 10px;
}

.mono-label {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-primary);
  background-color: var(--accent-soft);
  padding: 4px 10px;
  border-radius: 99px;
  display: inline-block;
  margin-bottom: 12px;
  font-weight: 600;
}

.mono-num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-primary);
}

/* Hero Section */
.hero-viewport {
  position: relative;
  min-height: 78vh;
  border-radius: var(--radius-card);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  margin: 24px 0 48px;
  border: 1px solid var(--border-subtle);
}

.hero-viewport img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12, 28, 18, 0.55) 0%, rgba(12, 28, 18, 0.82) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 760px;
  padding: 32px;
  color: #ffffff;
}

.hero-content h1 {
  color: #ffffff;
  margin-bottom: 18px;
}

.hero-content p {
  font-size: 1.15rem;
  color: #e5e7eb;
  margin-bottom: 28px;
}

/* Buttons & Links */
.btn-primary {
  display: inline-block;
  background-color: var(--accent-primary);
  color: #ffffff;
  font-weight: 600;
  padding: 14px 26px;
  border-radius: var(--radius-card);
  text-decoration: none;
  border: 1px solid var(--accent-primary);
  transition: background-color 0.25s ease, transform 0.25s var(--ease-kinetic);
  cursor: pointer;
  font-size: 1rem;
}

.btn-primary:hover {
  background-color: var(--accent-secondary);
  transform: translateY(-2px);
}

.text-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-primary);
  font-weight: 600;
  text-decoration: none;
  position: relative;
  padding-bottom: 3px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.98rem;
  font-family: inherit;
}

/* Bento Grid & Flat Tiles */
.section-block {
  margin: 64px 0;
}

.section-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 28px;
  gap: 16px;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
}

.tile {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 28px;
  transition: transform 0.35s var(--ease-kinetic), background-color 0.25s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.tile:hover {
  transform: translateY(-4px);
  background-color: var(--bg-surface-hover);
}

.span-12 { grid-column: span 12; }
.span-8 { grid-column: span 8; }
.span-7 { grid-column: span 7; }
.span-6 { grid-column: span 6; }
.span-5 { grid-column: span 5; }
.span-4 { grid-column: span 4; }
.span-3 { grid-column: span 3; }

/* Media Containers */
.media-16x9, .media-4x3, .media-1x1 {
  width: 100%;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  margin-bottom: 18px;
  background-color: #dfece5;
}

.media-16x9 { aspect-ratio: 16 / 9; }
.media-4x3 { aspect-ratio: 4 / 3; }
.media-1x1 { aspect-ratio: 1 / 1; }

.media-16x9 img, .media-4x3 img, .media-1x1 img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Paired Story Frames */
.paired-frames {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 16px 0;
}

.frame-caption {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* Numbered Sharing Lanes */
.sharing-lanes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.lane-step {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 24px;
}

.lane-number {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-primary);
  margin-bottom: 10px;
  display: block;
}

/* Calendar Grid */
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.cal-day {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 20px;
}

.cal-date {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-primary);
  font-weight: 700;
}

/* Disclosures / FAQ */
.faq-list {
  display: grid;
  gap: 12px;
}

details.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 18px 24px;
}

details.faq-item summary {
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

details.faq-item summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--accent-primary);
}

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

details.faq-item p {
  margin: 14px 0 0;
  color: var(--text-muted);
}

/* Shared Notebook Contact Panel */
.notebook-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 32px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 18px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-field.full {
  grid-column: span 2;
}

.form-field label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
}

.form-field input, .form-field select, .form-field textarea {
  padding: 12px 14px;
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  font-family: inherit;
  font-size: 1rem;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
}

.notebook-preview {
  background-color: var(--bg-canvas);
  border: 1px dashed var(--accent-primary);
  border-radius: var(--radius-card);
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  white-space: pre-wrap;
  margin: 20px 0;
}

.action-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
}

/* Tables */
.table-wrap {
  overflow-x: auto;
  margin: 24px 0;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  background: var(--bg-surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th, td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-subtle);
}

th {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-primary);
  background-color: var(--bg-surface-hover);
}

/* Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s var(--ease-kinetic), transform 0.6s var(--ease-kinetic);
}

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

/* Footer */
.site-footer {
  margin-top: 72px;
  padding-top: 36px;
  border-top: 1px solid var(--border-subtle);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 32px;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .span-8, .span-7, .span-6, .span-5, .span-4, .span-3 {
    grid-column: span 6;
  }
}

@media (max-width: 768px) {
  body {
    padding: 10px;
  }
  .page-frame {
    padding: 0 16px 32px;
  }
  .desktop-nav {
    display: none;
  }
  .mobile-menu-btn {
    display: inline-block;
  }
  .span-8, .span-7, .span-6, .span-5, .span-4, .span-3 {
    grid-column: span 12;
  }
  .paired-frames, .form-grid {
    grid-template-columns: 1fr;
  }
  .form-field.full {
    grid-column: span 1;
  }
}

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