:root {
    --ink: #000000;
    --canvas: #ffffff;
    --hairline: #e6e6e6;
    --hairline-soft: #f1f1f1;
    --surface-soft: #f7f7f5;
    --block-lime: #dceeb1;
    --block-lilac: #c5b0f4;
    --block-cream: #f4ecd6;
    --block-pink: #efd4d4;
    --block-mint: #c8e6cd;
    --block-coral: #f3c9b6;
    --block-navy: #1f1d3d;
    --accent-magenta: #ff3d8b;
    --radius-pill: 9999px;
    --radius-lg: 20px;
    --radius-md: 12px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    margin: 0;
    background: var(--canvas);
    color: var(--ink);
    font-family: 'Space Grotesk', 'DM Sans', -apple-system, system-ui, sans-serif;
    line-height: 1.45;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--hairline); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--ink); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

h1, h2, h3 {
    font-weight: 700;
    letter-spacing: -0.5px;
    margin: 0 0 16px;
    color: var(--ink);
}

h1 { font-size: 44px; line-height: 1.05; letter-spacing: -1.5px; }
h2 { font-size: 28px; line-height: 1.15; margin-top: 40px; }
h3 { font-size: 20px; line-height: 1.3; margin-top: 28px; }

p { margin: 0 0 16px; }

.top-bar { border-bottom: 1px solid var(--hairline); position: sticky; top: 0; background: var(--canvas); z-index: 50; }
.top-bar-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; height: 68px; display: flex; align-items: center; justify-content: space-between; }
.top-bar-logo { font-weight: 700; font-size: 18px; text-decoration: none; color: var(--ink); }
.top-bar-logo span { color: var(--accent-magenta); }
.top-bar-nav { display: flex; gap: 28px; }
.top-bar-nav a { text-decoration: none; font-size: 15px; font-weight: 500; color: var(--ink); }
.top-bar-nav a:hover { color: var(--accent-magenta); }

.top-bar-toggle { display: none; flex-direction: column; gap: 4px; background: none; border: none; cursor: pointer; padding: 8px; }
.top-bar-toggle span { width: 22px; height: 2px; background: var(--ink); }

.encyclopedia-layout { display: grid; grid-template-columns: 260px 1fr; gap: 48px; padding: 40px 0; }

.entry-sidebar { border-right: 1px solid var(--hairline); padding-right: 24px; position: sticky; top: 88px; align-self: start; max-height: calc(100vh - 110px); overflow-y: auto; }
.entry-sidebar-title { font-size: 13px; text-transform: uppercase; letter-spacing: 1.2px; color: #666; margin-bottom: 16px; }
.entry-sidebar-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.entry-sidebar-list a { display: flex; align-items: center; gap: 10px; font-size: 14px; text-decoration: none; color: var(--ink); }
.entry-sidebar-list a:hover { color: var(--accent-magenta); }
.entry-letter { display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; border-radius: var(--radius-pill); background: var(--block-lilac); font-size: 11px; font-weight: 700; flex-shrink: 0; }

.hero { padding: 56px 0; border-bottom: 1px solid var(--hairline); }
.eyebrow { font-family: 'Space Mono', monospace; text-transform: uppercase; font-size: 12px; letter-spacing: 1.5px; color: var(--accent-magenta); display: inline-block; margin-bottom: 16px; }
.hero-lead { font-size: 18px; color: #333; max-width: 640px; }

.btn { display: inline-flex; align-items: center; justify-content: center; height: 44px; padding: 0 26px; border-radius: var(--radius-pill); font-size: 15px; font-weight: 600; text-decoration: none; border: none; cursor: pointer; }
.btn-primary { background: var(--ink); color: var(--canvas); }
.btn-primary:hover { background: #262626; }
.btn-secondary { background: var(--surface-soft); color: var(--ink); border: 1px solid var(--hairline); }

.alpha-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 32px; }
.alpha-card {
    display: block;
    padding: 24px;
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--ink);
    border: 1px solid var(--hairline);
}
.alpha-card:hover { border-color: var(--ink); }
.alpha-card .cat { font-size: 12px; text-transform: uppercase; letter-spacing: 1px; color: #666; }
.alpha-card h3 { margin: 8px 0; font-size: 20px; }
.alpha-card p { color: #444; font-size: 14px; margin: 0; }

.bg-lime { background: var(--block-lime); }
.bg-lilac { background: var(--block-lilac); }
.bg-cream { background: var(--block-cream); }
.bg-pink { background: var(--block-pink); }
.bg-mint { background: var(--block-mint); }
.bg-coral { background: var(--block-coral); }

.breadcrumb { font-size: 13px; color: #666; margin-bottom: 24px; }
.breadcrumb a { color: #666; text-decoration: none; }
.breadcrumb a:hover { color: var(--ink); }

.toc { background: var(--surface-soft); border: 1px solid var(--hairline); border-radius: var(--radius-lg); padding: 24px; margin: 32px 0; }
.toc-title { font-size: 13px; text-transform: uppercase; letter-spacing: 1px; color: #666; margin-bottom: 12px; }
.toc ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.toc a { font-size: 14px; text-decoration: none; }
.toc a:hover { color: var(--accent-magenta); }

.related-content { margin-top: 48px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 16px; }
.related-grid a { display: block; padding: 16px; border-radius: var(--radius-md); background: var(--surface-soft); border: 1px solid var(--hairline); text-decoration: none; color: var(--ink); font-size: 14px; }
.related-grid a:hover { border-color: var(--ink); }

details.faq-item { border: 1px solid var(--hairline); border-radius: var(--radius-md); padding: 16px 20px; margin-bottom: 12px; }
details.faq-item summary { cursor: pointer; font-weight: 700; list-style: none; }
details.faq-item summary::-webkit-details-marker { display: none; }
details.faq-item summary::after { content: '+'; float: right; color: var(--accent-magenta); }
details.faq-item[open] summary::after { content: '−'; }
details.faq-item p { margin-top: 12px; color: #333; }

table { width: 100%; border-collapse: collapse; margin: 24px 0; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--hairline); }
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--hairline); font-size: 14px; }
th { background: var(--surface-soft); font-weight: 700; }

.disclaimer-box { background: var(--block-cream); border-radius: var(--radius-md); padding: 20px 24px; font-size: 14px; color: var(--ink); margin: 24px 0; }

form.contact-form { display: flex; flex-direction: column; gap: 16px; max-width: 480px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 14px; font-weight: 700; }
.form-group input { height: 44px; background: var(--canvas); border: 1px solid var(--hairline); border-radius: var(--radius-md); padding: 0 14px; font-size: 14px; font-family: inherit; }
.form-group input:focus { outline: none; border-color: var(--ink); }
.form-error { color: #c62828; font-size: 13px; display: none; }
.form-msg { font-size: 14px; margin-top: 8px; display: none; }
.form-msg.success { color: #1ea64a; }

.site-footer { border-top: 1px solid var(--hairline); padding: 48px 0 24px; margin-top: 64px; }
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.footer-col h3 { font-size: 13px; text-transform: uppercase; letter-spacing: 1px; color: #666; margin-bottom: 14px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { text-decoration: none; font-size: 14px; color: var(--ink); }
.footer-bottom { max-width: 1200px; margin: 32px auto 0; padding: 24px 24px 0; border-top: 1px solid var(--hairline); font-size: 13px; color: #666; }
.footer-disclaimer { font-size: 12px; color: #666; margin-bottom: 8px; }
.footer-copy { margin-top: 12px; }

.cookie-banner { position: fixed; bottom: 16px; left: 16px; right: 16px; max-width: 560px; margin: 0 auto; background: var(--canvas); border: 1px solid var(--ink); border-radius: var(--radius-lg); padding: 20px 24px; display: none; z-index: 100; }
.cookie-banner.visible { display: block; }
.cookie-banner p { font-size: 13px; margin: 0 0 16px; }
.cookie-actions { display: flex; gap: 12px; }

.page-header { padding: 48px 0 32px; border-bottom: 1px solid var(--hairline); }

.entry-image { border-radius: var(--radius-lg); margin-bottom: 24px; aspect-ratio: 16/9; object-fit: cover; }

@media (max-width: 1024px) {
    .encyclopedia-layout { grid-template-columns: 1fr; }
    .entry-sidebar { position: static; border-right: none; border-bottom: 1px solid var(--hairline); padding-bottom: 24px; max-height: none; }
    .footer-inner { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .top-bar-nav { display: none; }
    .top-bar-toggle { display: flex; }
    .top-bar-nav.open { display: flex; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0; background: var(--canvas); border-bottom: 1px solid var(--hairline); padding: 16px 24px; gap: 16px; }
    h1 { font-size: 32px; }
    .alpha-grid { grid-template-columns: 1fr; }
    .related-grid { grid-template-columns: 1fr; }
}