/* ─── Reset & Base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --accent: #16a34a;
  --accent-hover: #15803d;
  --accent-subtle: #f0fdf4;
  --accent-subtle-border: #bbf7d0;
  --text-primary: #111827;
  --text-secondary: #374151;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --border-light: #f3f4f6;
  --bg: #ffffff;
  --bg-subtle: #f9fafb;
  --bg-hover: #f3f4f6;
  --code-bg: #f3f4f6;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --sidebar-width: 256px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: "SF Mono", ui-monospace, "Cascadia Code", "Fira Code", monospace;
  --radius: 8px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-muted: #9ca3af;
    --border: #374151;
    --border-light: #1f2937;
    --bg: #111827;
    --bg-subtle: #1f2937;
    --bg-hover: #374151;
    --code-bg: #1f2937;
    --accent-subtle: #052e16;
    --accent-subtle-border: #14532d;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  }
}

[data-theme="dark"] {
  --text-primary: #f9fafb;
  --text-secondary: #d1d5db;
  --text-muted: #9ca3af;
  --border: #374151;
  --border-light: #1f2937;
  --bg: #111827;
  --bg-subtle: #1f2937;
  --bg-hover: #374151;
  --code-bg: #1f2937;
  --accent-subtle: #052e16;
  --accent-subtle-border: #14532d;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
}

html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font); color: var(--text-primary); background: var(--bg); line-height: 1.6; transition: background 0.2s, color 0.2s; }

/* ─── Layout ────────────────────────────────────────────────────────────────── */
.layout { display: flex; min-height: 100vh; }

/* ─── Sidebar ────────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  background: var(--bg-subtle);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.sidebar-logo { padding: 18px 16px 12px; display: flex; align-items: center; justify-content: space-between; }
.sidebar-logo a { display: flex; align-items: center; gap: 9px; text-decoration: none; color: var(--text-primary); }
.sidebar-logo img { border-radius: 7px; flex-shrink: 0; }
.logo-text { font-size: 0.9375rem; font-weight: 600; letter-spacing: -0.01em; color: var(--text-primary); }

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-subtle); }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: block; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: none; }
}

.search-trigger {
  display: flex;
  align-items: center;
  gap: 7px;
  width: calc(100% - 32px);
  margin: 0 16px 8px;
  padding: 7px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-family: var(--font);
  cursor: pointer;
  text-align: left;
  transition: border-color 0.15s;
}
.search-trigger:hover { border-color: var(--accent); color: var(--text-secondary); }
.search-trigger span { flex: 1; }
.search-trigger kbd {
  font-size: 0.625rem;
  font-family: var(--font-mono);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--text-muted);
}

.sidebar-nav { flex: 1; padding: 4px 0 16px; overflow-y: auto; }

.nav-item {
  display: flex;
  align-items: center;
  padding: 6px 16px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.12s, background 0.12s;
  gap: 6px;
  border-radius: 0;
}
.nav-item:hover { color: var(--text-primary); background: var(--bg-hover); }
.nav-item.active { color: var(--accent); font-weight: 600; }
.nav-item .chevron { margin-left: auto; color: var(--text-muted); transition: transform 0.2s; }
.nav-item.section-open .chevron { transform: rotate(180deg); }

.nav-children { display: none; padding-left: 12px; }
.nav-children.open { display: block; }
.nav-child {
  display: block;
  padding: 5px 16px;
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-decoration: none;
  border-left: 2px solid var(--border);
  margin-left: 16px;
  transition: color 0.12s, border-color 0.12s;
}
.nav-child:hover { color: var(--text-primary); border-left-color: var(--text-muted); }
.nav-child.active { color: var(--accent); border-left-color: var(--accent); font-weight: 600; }

.sidebar-footer {
  padding: 14px 16px;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
}

/* Sidebar store buttons */
.sidebar-store-btns { display: flex; gap: 6px; margin-bottom: 7px; }
.sidebar-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 10px;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius);
  text-decoration: none;
  font-size: 0.75rem;
  font-weight: 600;
  flex: 1;
  transition: background 0.15s;
  letter-spacing: -0.01em;
}
.sidebar-cta:hover { background: var(--accent-hover); color: #fff; }
.sidebar-cta-android {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--accent);
}
.sidebar-cta-android:hover { background: var(--accent-subtle); color: var(--accent); }

.sidebar-links { display: flex; gap: 12px; margin: 10px 0 8px; }
.sidebar-links a { display: flex; align-items: center; gap: 5px; font-size: 0.75rem; color: var(--text-muted); text-decoration: none; }
.sidebar-links a:hover { color: var(--text-primary); }
.sidebar-links svg { flex-shrink: 0; }
.sidebar-copy { color: var(--text-muted); font-size: 0.7rem; margin-top: 2px; }
.sidebar-copy a { color: var(--text-muted); text-decoration: underline; }
.sidebar-copy a:hover { color: var(--text-primary); }

/* ─── Newsletter form ────────────────────────────────────────────────────────── */
.newsletter-form { margin: 10px 0 10px; }
.newsletter-label { font-size: 0.72rem; color: var(--text-muted); margin-bottom: 6px; }
.newsletter-form form { display: flex; flex-direction: column; gap: 6px; }
.newsletter-form input[type=email] {
  width: 100%;
  font-family: var(--font);
  font-size: 0.8rem;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text-primary);
  outline: none;
}
.newsletter-form input[type=email]::placeholder { color: var(--text-muted); }
.newsletter-form input[type=email]:focus { border-color: var(--accent); }
.newsletter-form button {
  width: 100%;
  font-family: var(--font);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 7px 10px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.15s;
}
.newsletter-form button:hover { background: var(--accent-hover); }
.newsletter-form button:disabled { background: var(--text-muted); cursor: default; }
.newsletter-status { font-size: 0.7rem; margin-top: 5px; min-height: 1em; }
.newsletter-status.success { color: var(--accent); }
.newsletter-status.error { color: #ef4444; }

/* ─── Main Content ─────────────────────────────────────────────────────────── */
.main {
  flex: 1;
  min-width: 0;
  padding: 48px 56px 80px;
  max-width: 860px;
}

/* ─── Breadcrumb ────────────────────────────────────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--text-primary); }

/* ─── Content Typography ────────────────────────────────────────────────────── */
.content h1 {
  font-size: 1.875rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 12px;
  margin-top: 0;
}
.content h2 {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-top: 48px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
  position: relative;
}
.content h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 28px;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.content h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-top: 20px;
  margin-bottom: 6px;
}
.content p { margin-bottom: 16px; color: var(--text-secondary); font-size: 0.9375rem; line-height: 1.7; }
.content strong { color: var(--text-primary); font-weight: 600; }
.content a:not(.btn) { color: var(--accent); text-decoration: underline; text-decoration-color: var(--accent-subtle-border); }
.content a:not(.btn):hover { text-decoration-color: var(--accent); }
.content ul, .content ol { margin: 12px 0 16px 20px; }
.content li { margin-bottom: 6px; font-size: 0.9375rem; color: var(--text-secondary); line-height: 1.65; }

.content code {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--text-primary);
}
.content pre {
  background: #0d1117;
  border-radius: 10px;
  padding: 20px 24px;
  overflow-x: auto;
  margin: 20px 0;
  border: 1px solid #21262d;
}
.content pre code {
  font-size: 0.8125rem;
  background: none;
  border: none;
  padding: 0;
  color: #e6edf3;
}

.content table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 0.875rem; }
.content th { text-align: left; font-weight: 600; font-size: 0.8125rem; padding: 9px 12px; border-bottom: 2px solid var(--border); color: var(--text-primary); }
.content td { padding: 9px 12px; border-bottom: 1px solid var(--border-light); color: var(--text-secondary); vertical-align: top; }
.content tr:hover td { background: var(--bg-subtle); }

.content blockquote {
  border-left: 3px solid var(--accent);
  margin: 20px 0;
  padding: 12px 20px;
  background: var(--accent-subtle);
  border-radius: 0 var(--radius) var(--radius) 0;
  border: 1px solid var(--accent-subtle-border);
  border-left: 3px solid var(--accent);
}
.content blockquote p { color: var(--text-secondary); margin: 0; font-size: 0.9375rem; }

.content hr { border: none; border-top: 1px solid var(--border); margin: 40px 0; }

/* Heading anchors */
.heading-anchor { margin-left: 8px; color: var(--border); font-size: 0.875rem; text-decoration: none; opacity: 0; transition: opacity 0.15s; }
.content h2:hover .heading-anchor,
.content h3:hover .heading-anchor,
.content h4:hover .heading-anchor { opacity: 1; color: var(--text-muted); }

/* ─── Hero & Buttons ────────────────────────────────────────────────────────── */
.hero-cover {
  display: block;
  width: 100%;
  border-radius: 12px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-md);
}

.page-title-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
.page-title-row img { border-radius: 10px; flex-shrink: 0; }
.page-title-row h1 { margin-bottom: 0; }

.hero-buttons { display: flex; flex-wrap: wrap; gap: 8px; margin: 20px 0 32px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 18px;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: -0.01em;
  transition: background 0.15s, color 0.15s, border-color 0.15s, box-shadow 0.15s;
  border: 1.5px solid transparent;
  cursor: pointer;
  line-height: 1;
}
.btn svg { flex-shrink: 0; }
.btn-green {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-green:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #fff; }
.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border);
}
.btn-outline:hover { border-color: var(--text-muted); background: var(--bg-subtle); color: var(--text-primary); }

/* ─── Guide card grid ───────────────────────────────────────────────────────── */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
  margin: 16px 0 8px;
}
.guide-card {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  background: var(--bg-subtle);
  transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
}
.guide-card:hover {
  border-color: var(--accent);
  background: var(--accent-subtle);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}
.guide-card-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.guide-card-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ─── Prev/Next nav ─────────────────────────────────────────────────────────── */
.page-nav { display: flex; justify-content: space-between; gap: 16px; margin-top: 56px; padding-top: 24px; border-top: 1px solid var(--border-light); }
.page-nav-item { display: flex; flex-direction: column; gap: 4px; padding: 14px 18px; border: 1px solid var(--border); border-radius: 10px; text-decoration: none; flex: 1; transition: border-color 0.15s, background 0.15s; }
.page-nav-item:hover { border-color: var(--accent); background: var(--accent-subtle); }
.page-nav-item.next { text-align: right; }
.page-nav-label { font-size: 0.6875rem; color: var(--text-muted); font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; }
.page-nav-title { font-size: 0.875rem; font-weight: 600; color: var(--text-primary); letter-spacing: -0.01em; }

/* ─── Search modal ──────────────────────────────────────────────────────────── */
.search-modal { position: fixed; inset: 0; z-index: 1000; display: flex; align-items: flex-start; justify-content: center; padding-top: 72px; }
.search-modal[hidden] { display: none; }
.search-modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,0.5); backdrop-filter: blur(3px); }
.search-modal-box {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 580px;
  margin: 0 20px;
  background: var(--bg);
  border-radius: 12px;
  box-shadow: 0 24px 80px rgba(0,0,0,0.28);
  overflow: hidden;
  border: 1px solid var(--border);
}
#pagefind-search { --pagefind-ui-font: var(--font); }
#pagefind-search .pagefind-ui__search-input { font-family: var(--font) !important; font-size: 1rem !important; padding: 18px 20px 18px 48px !important; border: none !important; border-bottom: 1px solid var(--border) !important; border-radius: 0 !important; outline: none !important; box-shadow: none !important; background: var(--bg) !important; width: 100% !important; color: var(--text-primary) !important; }
#pagefind-search .pagefind-ui__results { max-height: 440px; overflow-y: auto; padding: 6px 0 10px; }
#pagefind-search .pagefind-ui__result { padding: 12px 20px; border-bottom: 1px solid var(--border-light); list-style: none; }
#pagefind-search .pagefind-ui__result:hover { background: var(--bg-subtle); }
#pagefind-search .pagefind-ui__result-link { font-family: var(--font) !important; font-size: 0.9375rem !important; font-weight: 600 !important; color: var(--text-primary) !important; text-decoration: none !important; }
#pagefind-search .pagefind-ui__result-link:hover { color: var(--accent) !important; }
#pagefind-search .pagefind-ui__result-excerpt { font-family: var(--font) !important; font-size: 0.8125rem !important; color: var(--text-muted) !important; margin-top: 3px !important; line-height: 1.5 !important; }
#pagefind-search mark { background: var(--accent-subtle); color: var(--accent); border-radius: 2px; padding: 0 2px; }

/* ─── Breadcrumb margin ─────────────────────────────────────────────────────── */
.breadcrumb { margin-bottom: 32px; }

/* ─── Essay Reactions — floating pill ──────────────────────────────────────── */
.essay-reactions {
  position: fixed;
  bottom: 28px;
  right: 28px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px 8px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
  z-index: 50;
}
.essay-reactions-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
}
.essay-reactions-buttons {
  display: flex;
  gap: 4px;
}
.reaction-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-muted);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}
.reaction-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-subtle);
}
.reaction-btn.active {
  border-color: var(--accent);
  background: var(--accent-subtle);
  color: var(--accent);
}
.essay-reaction-thanks {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
}
@media (max-width: 768px) {
  .essay-reactions { bottom: 16px; right: 16px; }
}

/* ─── Early Access Page ─────────────────────────────────────────────────────── */
.early-access-hero { margin-bottom: 40px; }
.early-access-badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-subtle);
  border: 1px solid var(--accent-subtle-border);
  border-radius: 20px;
  padding: 4px 12px;
  margin-bottom: 18px;
}
.early-access-hero h1 { font-size: 2.5rem; line-height: 1.1; letter-spacing: -0.04em; margin-bottom: 16px; }
.early-access-sub { font-size: 1rem; color: var(--text-muted); line-height: 1.7; max-width: 560px; }

.early-access-perks { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 32px 0 40px; }
.perk-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-subtle);
}
.perk-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-subtle-border);
  color: var(--accent);
  flex-shrink: 0;
}
.perk-title { font-size: 0.875rem; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; letter-spacing: -0.01em; }
.perk-desc { font-size: 0.8125rem; color: var(--text-muted); line-height: 1.55; }

.early-access-form-section { margin: 8px 0 32px; }
.early-access-form-section h2 { margin-top: 0; }
.early-access-form { margin-top: 20px; max-width: 480px; }
.ea-form-top { margin-bottom: 0; }
.ea-inline-group { display: flex; gap: 8px; }
.ea-inline-group .ea-input { flex: 1; }
.ea-inline-group .ea-submit { white-space: nowrap; flex-shrink: 0; margin-top: 0; width: auto; padding: 10px 20px; }
.ea-field-group { margin-bottom: 16px; }
.ea-label { display: block; font-size: 0.8125rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 7px; }
.ea-input {
  width: 100%;
  font-family: var(--font);
  font-size: 0.9375rem;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.15s;
}
.ea-input::placeholder { color: var(--text-muted); }
.ea-input:focus { border-color: var(--accent); }

.ea-form-footer { margin-top: 10px; display: flex; flex-direction: column; gap: 6px; }
.ea-pricing-note { font-size: 0.75rem; color: var(--text-muted); margin: 0; }
.ea-platform-links { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.ea-platform-label { font-size: 0.75rem; color: var(--text-muted); }
.ea-platform-link {
  background: none;
  border: none;
  padding: 0;
  font-family: var(--font);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.12s;
  text-decoration: underline;
  text-decoration-color: transparent;
}
.ea-platform-link:hover { color: var(--text-primary); }
.ea-platform-link.active { color: var(--accent); text-decoration-color: var(--accent-subtle-border); }

.ea-submit {
  width: 100%;
  font-family: var(--font);
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 12px 20px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.15s;
  letter-spacing: -0.01em;
  margin-top: 4px;
}
.ea-submit:hover { background: var(--accent-hover); }
.ea-submit:disabled { background: var(--text-muted); cursor: default; }

.ea-status { font-size: 0.8125rem; margin-top: 10px; min-height: 1.2em; }
.ea-status-success { color: var(--accent); }
.ea-status-error { color: #ef4444; }

/* ─── Essay early access CTA banner ────────────────────────────────────────── */
.essay-early-access {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 48px;
  padding: 18px 22px;
  background: var(--accent-subtle);
  border: 1px solid var(--accent-subtle-border);
  border-radius: 10px;
}
.essay-ea-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}
.essay-ea-text strong { color: var(--text-primary); }
.essay-ea-btn {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius);
  font-size: 0.8125rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background 0.15s;
}
.essay-ea-btn:hover { background: var(--accent-hover); color: #fff; }

/* ─── Early access essay link cards ────────────────────────────────────────── */
.ea-essay-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 16px 0 8px;
}
.ea-essay-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-subtle);
  text-decoration: none;
  transition: border-color 0.15s, background 0.15s;
}
.ea-essay-card:hover {
  border-color: var(--accent);
  background: var(--accent-subtle);
  text-decoration: none;
}
.ea-essay-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.35;
  letter-spacing: -0.01em;
}
.ea-essay-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ─── Mobile ────────────────────────────────────────────────────────────────── */
.mobile-topbar {
  display: none;
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 11px 16px;
  align-items: center;
  justify-content: space-between;
}
.mobile-topbar-logo { display: flex; align-items: center; gap: 8px; font-size: 0.9375rem; font-weight: 600; color: var(--text-primary); text-decoration: none; letter-spacing: -0.01em; }
.mobile-topbar-logo img { border-radius: 6px; }
.mobile-menu-btn { background: none; border: none; cursor: pointer; color: var(--text-secondary); padding: 4px; }
.mobile-search-btn { background: none; border: none; cursor: pointer; color: var(--text-secondary); padding: 4px; }
.mobile-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.45); z-index: 99; }
.mobile-overlay.visible { display: block; }

@media (max-width: 768px) {
  .mobile-topbar { display: flex; }
  .layout { display: block; }
  .sidebar { position: fixed; left: -280px; top: 0; height: 100vh; width: 280px; z-index: 100; transition: left 0.25s ease; box-shadow: none; }
  .sidebar.open { left: 0; box-shadow: 4px 0 24px rgba(0,0,0,0.18); }
  .main { padding: 28px 20px 60px; max-width: 100%; }
  .content h1 { font-size: 1.5rem; }
  .hero-buttons { gap: 8px; }
  .btn { padding: 10px 14px; font-size: 0.8125rem; }
  .early-access-perks { grid-template-columns: 1fr; }
  .early-access-hero h1 { font-size: 1.875rem; }
  .ea-essay-links { grid-template-columns: 1fr; }
  .essay-early-access { flex-direction: column; align-items: flex-start; }
}