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

:root {
--color-bg: #fafaf8;
--color-surface: #ffffff;
--color-text: #1a1a1a;
--color-text-secondary: #4a4a4a;
--color-border: #e0ded8;
--color-accent: #2c5f2d;
--color-accent-light: #e8f0e8;
--color-accent-dark: #1e421f;
--color-danger: #b33a3a;
--color-danger-light: #fdf0f0;
--color-warning: #8a6d14;
--color-warning-light: #fcf8e3;
--color-muted: #6b6b6b;
--font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
--radius-sm: 6px;
--radius-md: 10px;
--radius-lg: 16px;
--shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
--shadow-md: 0 4px 12px rgba(0,0,0,0.08);
--max-width: 1100px;
}

html { font-size: 17px; scroll-behavior: smooth; }
body {
font-family: var(--font-sans);
background: var(--color-bg);
color: var(--color-text);
line-height: 1.55;
-webkit-font-smoothing: antialiased;
}

.skip-link {
position: absolute;
top: -100px;
left: 10px;
background: var(--color-accent);
color: #fff;
padding: 8px 16px;
border-radius: var(--radius-sm);
z-index: 1000;
font-weight: 600;
text-decoration: none;
}
.skip-link:focus { top: 10px; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header {
background: var(--color-surface);
border-bottom: 1px solid var(--color-border);
position: sticky;
top: 0;
z-index: 100;
}
.header-inner {
display: flex;
align-items: center;
justify-content: space-between;
height: 60px;
}
.logo-link {
display: flex;
align-items: center;
gap: 10px;
text-decoration: none;
color: var(--color-accent-dark);
font-weight: 700;
font-size: 1.15rem;
}
.logo-icon { flex-shrink: 0; color: var(--color-accent); }
.site-nav .nav-list { display: flex; list-style: none; gap: 24px; }
.site-nav a {
text-decoration: none;
color: var(--color-text-secondary);
font-weight: 500;
font-size: 0.95rem;
transition: color 0.2s;
}
.site-nav a:hover { color: var(--color-accent); }

/* Hero */
.hero-section {
background: var(--color-accent-light);
border-bottom: 1px solid var(--color-border);
padding: 48px 0 36px;
}
.hero-content { max-width: 680px; }
.hero-content h1 { font-size: 2rem; font-weight: 800; color: var(--color-accent-dark); margin-bottom: 8px; line-height: 1.2; }
.hero-subtitle { font-size: 1.1rem; color: var(--color-text-secondary); }
.hero-meta { display: flex; gap: 20px; margin-top: 20px; flex-wrap: wrap; }
.version-badge, .privacy-badge {
font-size: 0.8rem;
background: var(--color-surface);
padding: 4px 12px;
border-radius: 20px;
color: var(--color-muted);
border: 1px solid var(--color-border);
}

/* Two Column */
.two-column {
display: grid;
grid-template-columns: 1fr 320px;
gap: 40px;
padding-top: 40px;
padding-bottom: 40px;
}

/* Checklist */
.checklist-section { background: var(--color-bg); }
.checklist-header {
display: flex;
justify-content: space-between;
align-items: center;
flex-wrap: wrap;
gap: 12px;
margin-bottom: 16px;
}
.checklist-header h2 { font-size: 1.4rem; color: var(--color-text); }
.checklist-controls { display: flex; gap: 8px; }

.btn-secondary, .btn-primary {
font-family: var(--font-sans);
font-size: 0.85rem;
padding: 8px 16px;
border-radius: var(--radius-sm);
border: 1px solid var(--color-border);
background: var(--color-surface);
color: var(--color-text);
cursor: pointer;
font-weight: 500;
transition: all 0.2s;
}
.btn-primary {
background: var(--color-accent);
color: #fff;
border-color: var(--color-accent);
}
.btn-primary:hover { background: var(--color-accent-dark); }
.btn-secondary:hover { background: #f5f5f2; }

.progress-bar-wrapper { margin-bottom: 24px; display: flex; align-items: center; gap: 12px; }
.progress-bar {
flex: 1;
height: 10px;
background: var(--color-border);
border-radius: 10px;
overflow: hidden;
}
.progress-fill {
height: 100%;
background: var(--color-accent);
border-radius: 10px;
transition: width 0.35s ease;
width: 0%;
}
.progress-label { font-size: 0.85rem; color: var(--color-muted); white-space: nowrap; }

.checklist-items { display: flex; flex-direction: column; gap: 8px; margin-bottom: 24px; }

.checklist-item {
background: var(--color-surface);
border: 1px solid var(--color-border);
border-radius: var(--radius-md);
overflow: hidden;
transition: box-shadow 0.2s, border-color 0.2s;
}
.checklist-item.completed { border-color: var(--color-accent); background: var(--color-accent-light); }
.checklist-item.completed .step-check { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }
.checklist-item.completed .step-title { text-decoration: line-through; color: var(--color-muted); }

.step-summary {
display: flex;
align-items: flex-start;
gap: 14px;
padding: 16px 18px;
cursor: pointer;
user-select: none;
}
.step-check {
flex-shrink: 0;
width: 24px;
height: 24px;
border: 2px solid var(--color-border);
border-radius: 50%;
display: flex;
align-items: center;
justify-content: center;
font-size: 0.75rem;
transition: all 0.2s;
}
.step-info { flex: 1; }
.step-title { font-weight: 600; font-size: 1rem; margin-bottom: 2px; transition: color 0.2s; }
.step-brief { font-size: 0.85rem; color: var(--color-text-secondary); }
.step-expand-icon { font-size: 0.8rem; color: var(--color-muted); margin-left: 8px; transition: transform 0.2s; flex-shrink: 0; align-self: center; }
.checklist-item.expanded .step-expand-icon { transform: rotate(180deg); }

.step-details {
display: none;
padding: 0 18px 18px 56px;
font-size: 0.9rem;
color: var(--color-text-secondary);
line-height: 1.6;
}
.checklist-item.expanded .step-details { display: block; }
.step-details p { margin-bottom: 8px; }
.step-details ul { padding-left: 20px; margin-bottom: 8px; }
.step-details li { margin-bottom: 4px; }

.recall-input-area {
background: var(--color-surface);
border: 1px solid var(--color-border);
border-radius: var(--radius-md);
padding: 18px;
display: flex;
flex-wrap: wrap;
gap: 10px;
align-items: center;
}
.input-label { font-weight: 600; font-size: 0.9rem; width: 100%; margin-bottom: -4px; }
.text-input {
flex: 1;
min-width: 180px;
padding: 8px 12px;
border: 1px solid var(--color-border);
border-radius: var(--radius-sm);
font-family: var(--font-sans);
font-size: 0.9rem;
}
.recall-name-display {
font-size: 0.9rem;
color: var(--color-accent-dark);
font-weight: 600;
margin-left: 12px;
}

/* Sidebar */
.checklist-sidebar { display: flex; flex-direction: column; gap: 20px; }
.sidebar-card {
background: var(--color-surface);
border: 1px solid var(--color-border);
border-radius: var(--radius-md);
padding: 18px;
font-size: 0.9rem;
}
.sidebar-card h3 { font-size: 1rem; margin-bottom: 8px; color: var(--color-text); }
.sidebar-card p { margin-bottom: 8px; color: var(--color-text-secondary); }
.resource-list, .mistake-list { padding-left: 18px; margin-bottom: 4px; }
.resource-list li, .mistake-list li { margin-bottom: 6px; color: var(--color-text-secondary); }
.resource-list a { color: var(--color-accent); text-decoration: underline; }
.resource-list a:hover { color: var(--color-accent-dark); }

/* Guide Section */
.guide-section { background: var(--color-surface); border-top: 1px solid var(--color-border); padding: 48px 0; }
.guide-section h2 { font-size: 1.5rem; margin-bottom: 24px; }
.guide-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.guide-card {
border: 1px solid var(--color-border);
border-radius: var(--radius-md);
padding: 20px;
background: var(--color-bg);
}
.guide-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.guide-card p { font-size: 0.9rem; color: var(--color-text-secondary); line-height: 1.6; }

/* FAQ */
.faq-section { background: var(--color-bg); padding: 48px 0 60px; }
.faq-section h2 { font-size: 1.5rem; margin-bottom: 24px; }
.faq-list { display: flex; flex-direction: column; gap: 16px; }
.faq-item { border-bottom: 1px solid var(--color-border); padding-bottom: 16px; }
.faq-item dt { font-weight: 600; font-size: 1rem; margin-bottom: 4px; cursor: default; }
.faq-item dd { font-size: 0.9rem; color: var(--color-text-secondary); margin-left: 0; }

/* Footer */
.site-footer {
background: var(--color-surface);
border-top: 1px solid var(--color-border);
padding: 28px 0;
font-size: 0.85rem;
color: var(--color-muted);
}
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; align-items: center; }
.footer-text { max-width: 520px; line-height: 1.5; }
.footer-nav .footer-links { display: flex; list-style: none; gap: 20px; flex-wrap: wrap; }
.footer-nav a { color: var(--color-muted); text-decoration: none; }
.footer-nav a:hover { color: var(--color-accent); text-decoration: underline; }

@media (max-width: 800px) {
.two-column { grid-template-columns: 1fr; gap: 28px; }
.checklist-sidebar { order: 1; }
.checklist-main { order: 2; }
.hero-content h1 { font-size: 1.6rem; }
.guide-grid { grid-template-columns: 1fr; }
.footer-inner { flex-direction: column; text-align: center; }
.footer-nav .footer-links { justify-content: center; }
}

@media print {
.site-header, .site-footer, .checklist-sidebar, .recall-input-area, .checklist-controls, .progress-bar-wrapper { display: none; }
.checklist-item { break-inside: avoid; border: 1px solid #ccc; }
.checklist-item.completed { background: #f0f0f0; }
.step-details { display: block !important; }
body { font-size: 14px; }
}


/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}