:root {
    --color-primary: #000000;
    --color-on-primary: #ffffff;
    --color-ink: #030303;
    --color-ink-soft: #1a1a1a;
    --color-graphite: #404040;
    --color-slate: #676f7b;
    --color-mute: #6b7280;
    --color-stone: #939393;
    --color-ash: #999999;
    --color-hairline: #e7eaf0;
    --color-hairline-soft: #c9ccd1;
    --color-surface-cool: #d0d4d4;
    --color-canvas: #ffffff;
    --color-canvas-warm: #fefefe;
    --color-footer: #030303;
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    --space-xxs: 4px;
    --space-xs: 8px;
    --space-sm: 12px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-xxl: 48px;
    --space-section: 64px;
    --space-section-lg: 96px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body.rh-body {
    background: var(--color-canvas);
    color: var(--color-ink);
    font-family: Inter, "Helvetica Neue", Helvetica, Arial, sans-serif;
    margin: 0;
    line-height: 1.5;
}

a { color: inherit; text-decoration: none; }

h1, h2, h3 { font-weight: 400; line-height: 1; color: var(--color-ink); }

h1 { font-size: 48px; letter-spacing: -1.2px; }
h2 { font-size: 36px; letter-spacing: -0.9px; }
h3 { font-size: 24px; letter-spacing: 0; }

p { color: var(--color-graphite); }

.rh-container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

.rh-topbar { background: var(--color-canvas); position: sticky; top: 0; z-index: 50; }

.rh-topbar-inner {
    max-width: 1280px;
    margin: 0 auto;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
}

.rh-brand { font-weight: 400; font-size: 16px; color: var(--color-ink); letter-spacing: -0.3px; }

.rh-nav-links { display: flex; gap: var(--space-lg); }
.rh-nav-link { color: var(--color-ink-soft); font-size: 14px; font-weight: 600; }
.rh-nav-link:hover, .rh-nav-link-active { color: var(--color-ink); text-decoration: underline; }

.rh-nav-toggle { display: none; flex-direction: column; gap: 4px; background: none; border: none; cursor: pointer; padding: 8px; }
.rh-nav-toggle span { width: 20px; height: 2px; background: var(--color-ink); display: block; }

.rh-nav-mobile { display: none; flex-direction: column; padding: var(--space-md) 24px var(--space-lg); gap: var(--space-md); border-top: 1px solid var(--color-hairline); }
.rh-nav-mobile.rh-open { display: flex; }

@media (max-width: 768px) {
    .rh-nav-links { display: none; }
    .rh-nav-toggle { display: flex; }
}

.rh-breadcrumb { max-width: 1280px; margin: 0 auto; padding: var(--space-md) 24px 0; font-size: 13px; color: var(--color-stone); }
.rh-breadcrumb ol { display: flex; flex-wrap: wrap; list-style: none; padding: 0; margin: 0; }
.rh-breadcrumb li { display: flex; align-items: center; }
.rh-breadcrumb a { color: var(--color-stone); }
.rh-breadcrumb a:hover { color: var(--color-ink); }
.rh-breadcrumb-sep { margin: 0 8px; }

.rh-hero { padding: var(--space-section-lg) 24px; max-width: 1280px; margin: 0 auto; }

.rh-hero-eyebrow {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.35px;
    color: var(--color-slate);
    text-transform: uppercase;
    margin-bottom: var(--space-md);
    display: block;
}

.rh-hero h1 { max-width: 820px; }

.rh-hero p.rh-lead {
    font-size: 20px;
    color: var(--color-graphite);
    max-width: 700px;
    margin-top: var(--space-md);
    line-height: 1.5;
}

.rh-section { max-width: 1280px; margin: 0 auto; padding: var(--space-section) 24px; }
.rh-section-title { margin-bottom: var(--space-lg); }

.rh-card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); }
@media (max-width: 1024px) { .rh-card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .rh-card-grid { grid-template-columns: 1fr; } }

.rh-card {
    background: var(--color-canvas);
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.rh-card:hover { border-color: var(--color-hairline-soft); }

.rh-card-img { width: 100%; height: 180px; object-fit: cover; background: var(--color-surface-cool); }
.rh-card-body { padding: var(--space-lg); display: flex; flex-direction: column; gap: var(--space-xs); }

.rh-card-tag { font-size: 11px; color: var(--color-slate); text-transform: uppercase; letter-spacing: 0.2px; font-weight: 450; }
.rh-card-title { font-size: 22px; margin: 0; font-weight: 400; letter-spacing: -0.3px; }
.rh-card-excerpt { font-size: 16px; color: var(--color-graphite); margin: 0; line-height: 1.3; }
.rh-card-date { font-size: 13px; color: var(--color-stone); }

.rh-timeline { display: flex; flex-direction: column; gap: var(--space-xl); position: relative; padding-left: var(--space-xl); }

.rh-timeline::before {
    content: "";
    position: absolute;
    left: 15px;
    top: 8px;
    bottom: 8px;
    width: 1px;
    background: var(--color-hairline-soft);
}

.rh-timeline-item { position: relative; display: flex; gap: var(--space-lg); }

.rh-timeline-marker {
    position: absolute;
    left: -32px;
    top: 0;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--color-canvas);
    border: 1px solid var(--color-ink);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    color: var(--color-ink);
    font-weight: 600;
}

.rh-timeline-content h3 { margin: 0 0 8px; }
.rh-timeline-content p { margin: 0; font-size: 16px; }

.rh-related { margin-top: var(--space-xxl); }
.rh-related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-md); }
@media (max-width: 1024px) { .rh-related-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .rh-related-grid { grid-template-columns: 1fr; } }

.rh-related-card { background: var(--color-canvas); border: 1px solid var(--color-hairline); border-radius: var(--radius-md); overflow: hidden; display: flex; flex-direction: column; }
.rh-related-card img { width: 100%; height: 100px; object-fit: cover; background: var(--color-surface-cool); }
.rh-related-card span { padding: var(--space-sm); font-size: 14px; color: var(--color-graphite); }

.rh-toc { background: var(--color-canvas-warm); border: 1px solid var(--color-hairline-soft); border-radius: var(--radius-lg); padding: var(--space-lg); margin: var(--space-lg) 0; }
.rh-toc h2 { font-size: 16px; margin: 0 0 var(--space-sm); font-weight: 600; }
.rh-toc ul { margin: 0; padding-left: var(--space-lg); }
.rh-toc a { color: var(--color-slate); font-size: 14px; }
.rh-toc a:hover { color: var(--color-ink); }

.rh-prose { max-width: 760px; }
.rh-prose h2 { margin-top: var(--space-xl); }
.rh-prose h3 { margin-top: var(--space-lg); }
.rh-prose p { margin: var(--space-md) 0; font-size: 16px; }

.rh-faq-item { border: 1px solid var(--color-hairline); border-radius: var(--radius-md); padding: var(--space-md) var(--space-lg); margin-bottom: var(--space-sm); background: var(--color-canvas); }
.rh-faq-item summary { cursor: pointer; font-weight: 600; color: var(--color-ink); list-style: none; }
.rh-faq-item summary::-webkit-details-marker { display: none; }
.rh-faq-item summary::after { content: "+"; float: right; color: var(--color-ink); }
.rh-faq-item[open] summary::after { content: "−"; }
.rh-faq-item p { margin-top: var(--space-sm); font-size: 15px; }

.rh-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    height: 40px;
}

.rh-btn-primary { background: var(--color-primary); color: var(--color-on-primary); }
.rh-btn-primary:hover { opacity: 0.85; }
.rh-btn-ghost { background: var(--color-canvas); color: var(--color-ink); border: 1px solid var(--color-ink); }

.rh-table { width: 100%; border-collapse: collapse; margin: var(--space-lg) 0; }
.rh-table th, .rh-table td { text-align: left; padding: var(--space-sm) var(--space-md); border-bottom: 1px solid var(--color-hairline); font-size: 15px; }
.rh-table th { color: var(--color-slate); font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: 0.2px; }
.rh-table td { color: var(--color-graphite); }

.rh-footer { background: var(--color-footer); color: var(--color-on-primary); padding: var(--space-section) 24px 32px; }
.rh-footer-inner { max-width: 1280px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--space-xl); }
@media (max-width: 900px) { .rh-footer-inner { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .rh-footer-inner { grid-template-columns: 1fr; } }

.rh-footer-brand { font-size: 16px; margin: 0 0 var(--space-sm); font-weight: 400; color: var(--color-on-primary); }
.rh-footer-col h4 { font-size: 11px; color: var(--color-stone); text-transform: uppercase; letter-spacing: 0.2px; margin: 0 0 var(--space-sm); font-weight: 450; }
.rh-footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.rh-footer-col ul a { color: var(--color-on-primary); font-size: 16px; }
.rh-footer-col ul a:hover { text-decoration: underline; }
.rh-footer-text { font-size: 16px; color: var(--color-on-primary); }
.rh-footer-disclaimer { font-size: 13px; color: var(--color-stone); margin-top: var(--space-sm); }

.rh-footer-bottom { max-width: 1280px; margin: var(--space-xxl) auto 0; padding-top: var(--space-lg); border-top: 1px solid #333333; display: flex; flex-direction: column; gap: var(--space-sm); }
.rh-footer-copy { font-size: 13px; color: var(--color-stone); }

.rh-cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-canvas);
    border-top: 1px solid var(--color-ink);
    padding: var(--space-lg) 24px;
    display: none;
    flex-wrap: wrap;
    gap: var(--space-md);
    align-items: center;
    justify-content: space-between;
    z-index: 100;
}

.rh-cookie-banner.rh-visible { display: flex; }
.rh-cookie-banner p { font-size: 14px; color: var(--color-graphite); margin: 0; max-width: 700px; }
.rh-cookie-actions { display: flex; gap: var(--space-sm); }

.rh-form { display: flex; flex-direction: column; gap: var(--space-lg); max-width: 480px; }
.rh-form label { font-size: 16px; color: var(--color-ink); margin-bottom: 4px; display: block; }
.rh-form input {
    width: 100%;
    background: var(--color-canvas);
    border: none;
    border-bottom: 1px solid var(--color-hairline-soft);
    border-radius: 0;
    padding: 12px 0;
    color: var(--color-ink);
    font-size: 16px;
}

.rh-form input:focus { outline: none; border-bottom-color: var(--color-ink); }

.rh-form-error { font-size: 13px; color: #b00020; margin-top: 4px; display: none; }
.rh-form-field.rh-invalid input { border-bottom-color: #b00020; }
.rh-form-field.rh-invalid .rh-form-error { display: block; }

.rh-form-success { background: var(--color-canvas-warm); border: 1px solid var(--color-hairline-soft); border-radius: var(--radius-lg); padding: var(--space-md); color: var(--color-ink); font-size: 16px; display: none; }
.rh-form-success.rh-visible { display: block; }

.rh-disclaimer-block { background: var(--color-canvas-warm); border: 1px solid var(--color-hairline-soft); border-radius: var(--radius-lg); padding: var(--space-md) var(--space-lg); font-size: 14px; color: var(--color-slate); margin: var(--space-lg) 0; }

.rh-read-more-content { display: none; }
.rh-read-more-content.rh-visible { display: block; }
.rh-read-more-btn { color: var(--color-ink); font-size: 14px; font-weight: 600; cursor: pointer; background: none; border: none; padding: 0; margin-top: var(--space-sm); text-decoration: underline; }

.rh-tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin: var(--space-md) 0; }
.rh-tag { background: var(--color-canvas); color: var(--color-slate); font-size: 11px; font-weight: 450; letter-spacing: 0.2px; padding: 6px 12px; border-radius: var(--radius-full); border: 1px solid var(--color-hairline-soft); }