/* ============================================================
   PestControl.cc — Design System
   ============================================================ */

:root {
  /* Brand */
  --green-50:  #ecfdf5;
  --green-100: #d1fae5;
  --green-200: #a7f3d0;
  --green-300: #6ee7b7;
  --green-400: #34d399;
  --green-500: #10b981;
  --green-600: #059669;
  --green-700: #047857;
  --green-800: #065f46;
  --green-900: #064e3b;
  --green-950: #022c22;

  --accent-500: #f59e0b;
  --accent-600: #d97706;

  --red-500: #ef4444;
  --red-600: #dc2626;
  --red-700: #b91c1c;

  /* Neutrals */
  --gray-50:  #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --gray-950: #030712;

  /* Semantic — Light theme */
  --bg:          #ffffff;
  --bg-soft:     #f9fafb;
  --bg-elevated: #ffffff;
  --bg-tint:     #ecfdf5;
  --surface:     #ffffff;
  --text:        #111827;
  --text-muted:  #4b5563;
  --text-soft:   #6b7280;
  --border:      #e5e7eb;
  --border-soft: #f3f4f6;
  --primary:     #047857;
  --primary-hover:#065f46;
  --primary-soft:#ecfdf5;
  --on-primary:  #ffffff;
  --accent:      #d97706;
  --shadow-sm:   0 1px 2px rgba(0,0,0,0.05);
  --shadow:      0 4px 14px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.04);
  --shadow-lg:   0 20px 40px -10px rgba(15, 23, 42, 0.15), 0 8px 16px -8px rgba(15, 23, 42, 0.1);
  --shadow-xl:   0 30px 60px -15px rgba(15, 23, 42, 0.25);

  /* Sizing */
  --radius-sm:  6px;
  --radius:     12px;
  --radius-lg:  18px;
  --radius-xl:  24px;
  --max:        1180px;
  --max-narrow: 760px;

  /* Type */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, system-ui, sans-serif;
  --font-serif: 'Source Serif 4', 'Georgia', serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

[data-theme="dark"] {
  --bg:          #0a0f0d;
  --bg-soft:     #0f1614;
  --bg-elevated: #131b18;
  --bg-tint:     #0d1f17;
  --surface:     #131b18;
  --text:        #f3f4f6;
  --text-muted:  #cbd5d1;
  --text-soft:   #9ca3af;
  --border:      #1f2a26;
  --border-soft: #18211d;
  --primary:     #34d399;
  --primary-hover:#6ee7b7;
  --primary-soft:#0d1f17;
  --on-primary:  #022c22;
  --accent:      #fbbf24;
  --shadow:      0 4px 14px rgba(0,0,0,0.4), 0 1px 3px rgba(0,0,0,0.2);
  --shadow-lg:   0 20px 40px -10px rgba(0,0,0,0.6);
  --shadow-xl:   0 30px 60px -15px rgba(0,0,0,0.8);
}

/* ============================================================
   Reset & base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 80px;
}
body {
  margin: 0;
  font-family: var(--font-sans);
  font-feature-settings: "cv02","cv03","cv04","cv11";
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background 0.25s ease, color 0.25s ease;
}
img, svg { max-width: 100%; height: auto; display: block; }

::selection { background: var(--green-200); color: var(--green-900); }
[data-theme="dark"] ::selection { background: var(--green-700); color: var(--green-50); }

a {
  color: var(--primary);
  text-decoration: none;
  text-decoration-color: transparent;
  text-underline-offset: 3px;
  transition: color 0.15s, text-decoration-color 0.15s;
}
a:hover { color: var(--primary-hover); text-decoration: underline; text-decoration-color: currentColor; }
a:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; border-radius: 3px; }

h1, h2, h3, h4, h5 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 0 0 0.5em;
}
h1 { font-size: clamp(2rem, 3.6vw + 0.5rem, 3.4rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.55rem, 1.6vw + 0.9rem, 2.2rem); margin-top: 2.5rem; }
h3 { font-size: 1.35rem; margin-top: 2rem; }
h4 { font-size: 1.1rem; margin-top: 1.5rem; }

p, ul, ol { margin: 0 0 1.1rem; }
ul, ol { padding-left: 1.25rem; }
li { margin-bottom: 0.35rem; }
li::marker { color: var(--primary); }

hr { border: 0; border-top: 1px solid var(--border); margin: 2.5rem 0; }

code, kbd {
  font-family: var(--font-mono);
  font-size: 0.92em;
  background: var(--bg-soft);
  padding: 0.12em 0.4em;
  border-radius: 4px;
  border: 1px solid var(--border-soft);
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -10000px;
  top: 8px;
  background: var(--primary);
  color: var(--on-primary);
  padding: 0.6rem 1rem;
  border-radius: 6px;
  z-index: 200;
}
.skip-link:focus { left: 8px; }

/* ============================================================
   Header / Nav
   ============================================================ */
.site-header {
  background: rgba(255,255,255,0.85);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 60;
}
[data-theme="dark"] .site-header { background: rgba(10,15,13,0.8); }

.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text);
  letter-spacing: -0.01em;
}
.brand:hover { text-decoration: none; color: var(--text); }
.brand .logo {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--green-500), var(--green-700));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 14px -4px rgba(5, 150, 105, 0.45);
}
.nav-links {
  display: flex;
  gap: 0.4rem;
  list-style: none;
  margin: 0 0 0 auto;
  padding: 0;
  align-items: center;
}
.nav-links a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.5rem 0.8rem;
  border-radius: 8px;
  transition: background 0.15s, color 0.15s;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text);
  background: var(--bg-soft);
  text-decoration: none;
}
.nav-tools {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-left: 0.4rem;
  border-left: 1px solid var(--border);
  padding-left: 0.6rem;
}
.icon-btn {
  width: 38px; height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s;
}
.icon-btn:hover { background: var(--bg-soft); color: var(--text); border-color: var(--border); }
.icon-btn svg { width: 18px; height: 18px; }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 10px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--text);
}
.nav-toggle svg { width: 18px; height: 18px; }

/* Reading progress bar (article pages) */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--green-500), var(--accent-500));
  z-index: 100;
  transition: width 0.05s linear;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: 10px;
  font-weight: 600;
  font-family: var(--font-sans);
  font-size: 0.98rem;
  letter-spacing: -0.005em;
  background: var(--primary);
  color: var(--on-primary);
  border: 1px solid var(--primary);
  cursor: pointer;
  transition: all 0.15s;
  box-shadow: var(--shadow-sm);
}
.btn:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  color: var(--on-primary);
  transform: translateY(-1px);
  text-decoration: none;
  box-shadow: 0 8px 16px -4px rgba(5, 150, 105, 0.35);
}
.btn:active { transform: translateY(0); }
.btn.btn-lg { padding: 1.05rem 1.85rem; font-size: 1.05rem; }
.btn.btn-sm { padding: 0.55rem 1rem; font-size: 0.9rem; }
.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
  background: var(--bg-soft);
  color: var(--text);
  border-color: var(--border);
  box-shadow: var(--shadow);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid transparent;
  box-shadow: none;
}
.btn-ghost:hover { background: var(--bg-soft); color: var(--text); }
.btn-accent {
  background: var(--accent-500);
  color: #1a1a1a;
  border-color: var(--accent-500);
}
.btn-accent:hover {
  background: var(--accent-600);
  border-color: var(--accent-600);
  color: #fff;
}

/* ============================================================
   Layout helpers
   ============================================================ */
.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 4rem 1.25rem;
}
.container-narrow {
  max-width: var(--max-narrow);
  margin: 0 auto;
  padding: 3rem 1.25rem 4rem;
}
.section-soft { background: var(--bg-soft); }
.section-tint { background: var(--bg-tint); }

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-soft);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

.section-title {
  text-align: center;
  margin: 0 0 0.6rem;
}
.section-sub {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 640px;
  margin: 0 auto 3rem;
}

.grid { display: grid; gap: 1.5rem; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  padding: 5rem 1.25rem 5rem;
  overflow: hidden;
  background:
    radial-gradient(1200px 600px at 85% -20%, rgba(16, 185, 129, 0.16), transparent 60%),
    radial-gradient(800px 500px at -10% 30%, rgba(245, 158, 11, 0.08), transparent 60%),
    var(--bg);
}
.hero-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.4rem, 4vw + 0.5rem, 4rem);
  line-height: 1.05;
  margin-bottom: 1.25rem;
}
.hero h1 .accent {
  background: linear-gradient(120deg, var(--green-500), var(--green-700));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero .lead {
  font-size: 1.18rem;
  color: var(--text-muted);
  max-width: 600px;
  margin-bottom: 2rem;
}
.hero-cta { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-bottom: 2.5rem; }
.hero-meta { display: flex; gap: 2rem; flex-wrap: wrap; color: var(--text-soft); font-size: 0.9rem; }
.hero-meta-item { display: flex; align-items: center; gap: 0.5rem; }
.hero-meta-item svg { width: 18px; height: 18px; color: var(--primary); }

.hero-visual {
  position: relative;
  aspect-ratio: 1;
  max-width: 480px;
  margin-left: auto;
}
.hero-visual svg { width: 100%; height: 100%; filter: drop-shadow(0 30px 60px rgba(0,0,0,0.15)); }

/* ============================================================
   Cards
   ============================================================ */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  transition: all 0.2s;
  position: relative;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--green-200);
}
[data-theme="dark"] .card:hover { border-color: var(--green-700); }

.card h3 { margin: 0 0 0.6rem; font-size: 1.2rem; }
.card p { color: var(--text-muted); margin-bottom: 1rem; font-size: 0.97rem; }
.card .read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-weight: 600;
  font-size: 0.92rem;
}
.card .read-more::after {
  content: "→";
  transition: transform 0.15s;
}
.card .read-more:hover::after { transform: translateX(3px); }

.card-link {
  display: block;
  color: inherit;
}
.card-link:hover { text-decoration: none; color: inherit; }

.icon-wrap {
  width: 52px; height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--green-100), var(--green-200));
  color: var(--green-700);
  margin-bottom: 1rem;
  font-size: 1.6rem;
}
[data-theme="dark"] .icon-wrap {
  background: linear-gradient(135deg, var(--green-900), var(--green-800));
  color: var(--green-300);
}

.icon-wrap.amber {
  background: linear-gradient(135deg, #fef3c7, #fde68a);
  color: #b45309;
}
.icon-wrap.red {
  background: linear-gradient(135deg, #fee2e2, #fecaca);
  color: #b91c1c;
}
.icon-wrap.blue {
  background: linear-gradient(135deg, #dbeafe, #bfdbfe);
  color: #1d4ed8;
}
.icon-wrap.purple {
  background: linear-gradient(135deg, #ede9fe, #ddd6fe);
  color: #6d28d9;
}

/* Featured card (for highlighted articles) */
.card-featured {
  background: linear-gradient(135deg, var(--green-700), var(--green-900));
  color: #fff;
  border: none;
}
.card-featured h3, .card-featured p { color: #fff; }
.card-featured .read-more { color: var(--green-200); }

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
}
.stat {
  padding: 2rem 1.5rem;
  text-align: center;
  border-right: 1px solid var(--border);
}
.stat:last-child { border-right: none; }
.stat-num {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 600;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 0.4rem;
}
.stat-label {
  font-size: 0.88rem;
  color: var(--text-soft);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ============================================================
   Article
   ============================================================ */
.article {
  font-size: 1.05rem;
}
.article > header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}
.article > header h1 { margin-bottom: 0.5rem; }
.article .meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  color: var(--text-soft);
  font-size: 0.92rem;
}
.article .meta .tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--primary-soft);
  color: var(--primary);
  padding: 0.18rem 0.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.82rem;
}

.article p { font-size: 1.05rem; line-height: 1.75; color: var(--text); }
.article ul, .article ol { font-size: 1.05rem; line-height: 1.75; }
.article p > strong, .article li > strong { color: var(--text); }

.article blockquote {
  border-left: 4px solid var(--primary);
  background: var(--bg-tint);
  padding: 1.1rem 1.4rem;
  margin: 2rem 0;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--text);
}
.article blockquote p:last-child { margin-bottom: 0; }

.callout {
  display: flex;
  gap: 1rem;
  background: var(--bg-tint);
  border: 1px solid var(--green-200);
  border-left: 4px solid var(--primary);
  padding: 1.1rem 1.3rem;
  margin: 2rem 0;
  border-radius: var(--radius);
}
[data-theme="dark"] .callout { border-color: var(--green-800); }
.callout .callout-icon {
  flex-shrink: 0;
  width: 24px; height: 24px;
  color: var(--primary);
}
.callout strong { color: var(--text); }
.callout p:last-child { margin-bottom: 0; }

.callout-warning {
  background: #fef3c7;
  border-color: #fde68a;
  border-left-color: #d97706;
}
.callout-warning .callout-icon { color: #d97706; }
[data-theme="dark"] .callout-warning { background: rgba(217, 119, 6, 0.08); border-color: #92400e; }

.callout-danger {
  background: #fee2e2;
  border-color: #fecaca;
  border-left-color: #dc2626;
}
.callout-danger .callout-icon { color: #dc2626; }
[data-theme="dark"] .callout-danger { background: rgba(220, 38, 38, 0.08); border-color: #7f1d1d; }

/* Article TOC */
.article-layout {
  max-width: var(--max);
  margin: 0 auto;
  padding: 3rem 1.25rem;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 3rem;
}
.toc {
  position: sticky;
  top: 90px;
  align-self: start;
  font-size: 0.9rem;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
}
.toc h4 {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-soft);
  margin: 0 0 0.8rem;
}
.toc ul { list-style: none; padding: 0; margin: 0; border-left: 1px solid var(--border); }
.toc li { margin: 0; }
.toc a {
  display: block;
  padding: 0.35rem 0.9rem;
  color: var(--text-muted);
  border-left: 2px solid transparent;
  margin-left: -1px;
  font-weight: 500;
}
.toc a:hover { color: var(--text); text-decoration: none; background: var(--bg-soft); }
.toc a.active {
  color: var(--primary);
  border-left-color: var(--primary);
  background: var(--primary-soft);
}

.article-main { min-width: 0; }

/* Crumbs */
.crumbs {
  font-size: 0.88rem;
  color: var(--text-soft);
  margin-bottom: 1.2rem;
}
.crumbs a { color: var(--text-soft); }
.crumbs span { margin: 0 0.4rem; opacity: 0.6; }

/* ============================================================
   Tables
   ============================================================ */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0 2rem;
  font-size: 0.96rem;
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}
th, td {
  text-align: left;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
}
th {
  background: var(--bg-soft);
  font-weight: 600;
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}
tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--bg-soft); }

/* ============================================================
   FAQ
   ============================================================ */
.faq details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.3rem;
  margin-bottom: 0.7rem;
  transition: border 0.15s;
}
.faq details[open] { border-color: var(--primary); }
.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--primary);
  transition: transform 0.2s;
}
.faq details[open] summary::after { content: "−"; }
.faq details[open] summary { margin-bottom: 0.7rem; }

/* ============================================================
   Forms
   ============================================================ */
form .field { margin-bottom: 1.2rem; }
form label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
  font-size: 0.93rem;
  color: var(--text);
}
form input, form textarea, form select {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  font: inherit;
  font-size: 1rem;
  background: var(--surface);
  color: var(--text);
  transition: border 0.15s, box-shadow 0.15s;
}
form input:focus, form textarea:focus, form select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}
form textarea { min-height: 140px; resize: vertical; }
.form-status { margin-top: 1rem; font-size: 0.95rem; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--gray-950);
  color: #cbd5d1;
  padding: 4rem 1.25rem 1.5rem;
  margin-top: 5rem;
}
[data-theme="dark"] .site-footer { background: #050807; border-top: 1px solid #1a2420; }
.footer-grid {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  gap: 3rem;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
}
.footer-grid h4 {
  color: #fff;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 0 0 1.1rem;
  font-weight: 600;
}
.footer-grid p { color: #9ca3af; font-size: 0.95rem; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin: 0.5rem 0; }
.footer-grid a { color: #cbd5d1; font-size: 0.95rem; }
.footer-grid a:hover { color: #fff; }
.footer-brand .brand { color: #fff; font-size: 1.3rem; margin-bottom: 0.8rem; display: inline-flex; }
.footer-bottom {
  max-width: var(--max);
  margin: 3rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid #1f2937;
  font-size: 0.88rem;
  text-align: center;
  color: #6b7280;
}

/* ============================================================
   Newsletter card
   ============================================================ */
.newsletter {
  background: linear-gradient(135deg, var(--green-700), var(--green-900));
  color: #fff;
  border-radius: var(--radius-xl);
  padding: 3rem 2.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.newsletter::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 0%, rgba(255,255,255,0.1), transparent 50%);
  pointer-events: none;
}
.newsletter h2 { color: #fff; margin-top: 0; }
.newsletter p { color: rgba(255,255,255,0.85); max-width: 480px; margin: 0 auto 1.8rem; }
.newsletter-form {
  display: flex;
  max-width: 460px;
  margin: 0 auto;
  gap: 0.6rem;
  position: relative;
  z-index: 1;
}
.newsletter-form input {
  flex: 1;
  border: none;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  background: rgba(255,255,255,0.95);
  color: var(--text);
  font-size: 1rem;
}
.newsletter-form input:focus { outline: 2px solid #fff; box-shadow: none; }
.newsletter-form button { background: var(--accent-500); color: #1a1a1a; border-color: var(--accent-500); }
.newsletter-form button:hover { background: #fff; border-color: #fff; color: #1a1a1a; }

/* ============================================================
   Pest identifier quiz
   ============================================================ */
.quiz {
  max-width: 720px;
  margin: 2rem auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow);
}
.quiz-step { display: none; animation: fadeIn 0.3s ease; }
.quiz-step.active { display: block; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
.quiz-q { font-size: 1.25rem; font-family: var(--font-serif); font-weight: 600; margin-bottom: 1.2rem; color: var(--text); }
.quiz-options { display: grid; gap: 0.7rem; }
.quiz-option {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem 1.2rem;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  text-align: left;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  transition: all 0.15s;
  font-family: inherit;
  width: 100%;
}
.quiz-option:hover {
  background: var(--primary-soft);
  border-color: var(--primary);
  transform: translateX(4px);
}
.quiz-progress {
  height: 6px;
  background: var(--bg-soft);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 1.5rem;
}
.quiz-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--green-500), var(--green-700));
  transition: width 0.3s;
}
.quiz-meta { font-size: 0.85rem; color: var(--text-soft); margin-bottom: 0.5rem; }
.quiz-result {
  display: none;
  text-align: center;
  padding: 1rem 0;
}
.quiz-result.active { display: block; animation: fadeIn 0.3s ease; }
.quiz-result .result-icon { font-size: 4rem; margin-bottom: 1rem; }
.quiz-result h3 { font-size: 1.6rem; margin-top: 0; }
.quiz-actions { display: flex; gap: 0.6rem; justify-content: center; margin-top: 1.5rem; flex-wrap: wrap; }

/* ============================================================
   Cost calculator
   ============================================================ */
.calc {
  max-width: 760px;
  margin: 2rem auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow);
}
.calc-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.calc-result {
  background: linear-gradient(135deg, var(--green-700), var(--green-900));
  color: #fff;
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  margin-top: 1.5rem;
}
.calc-result .label { opacity: 0.85; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.08em; }
.calc-result .estimate {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 600;
  margin: 0.3rem 0;
}
.calc-result .note { font-size: 0.85rem; opacity: 0.8; }
.calc-breakdown { margin-top: 1.5rem; }
.calc-breakdown table { margin: 0; }

/* ============================================================
   Calendar
   ============================================================ */
.calendar {
  display: grid;
  grid-template-columns: 180px repeat(12, 1fr);
  gap: 2px;
  background: var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  font-size: 0.82rem;
}
.calendar > div { background: var(--surface); padding: 0.6rem 0.4rem; text-align: center; }
.calendar .cal-pest {
  font-weight: 600;
  text-align: left;
  padding-left: 1rem;
  background: var(--bg-soft);
  display: flex;
  align-items: center;
}
.calendar .cal-header {
  background: var(--gray-900);
  color: #fff;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
}
[data-theme="dark"] .calendar .cal-header { background: var(--green-900); }
.cal-cell { background: var(--surface); }
.cal-cell.low    { background: #fef3c7; }
.cal-cell.medium { background: #fbbf24; color: #1a1a1a; }
.cal-cell.high   { background: #dc2626; color: #fff; font-weight: 600; }
.cal-cell.peak   { background: #7f1d1d; color: #fff; font-weight: 700; }
[data-theme="dark"] .cal-cell.low    { background: #78350f; color: #fef3c7; }
[data-theme="dark"] .cal-cell.medium { background: #b45309; color: #fff; }
.calendar-legend {
  display: flex;
  gap: 1.5rem;
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.calendar-legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.legend-sq {
  width: 14px; height: 14px;
  border-radius: 3px;
  display: inline-block;
}

/* ============================================================
   Glossary
   ============================================================ */
.glossary-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin: 1.5rem 0 2rem;
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.glossary-nav a {
  width: 32px; height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-soft);
  color: var(--text);
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.85rem;
}
.glossary-nav a:hover { background: var(--primary); color: var(--on-primary); text-decoration: none; }
.glossary-entry {
  border-bottom: 1px solid var(--border);
  padding: 1.2rem 0;
}
.glossary-entry dt {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--primary);
  margin-bottom: 0.3rem;
}

/* ============================================================
   Pricing-style "tiers" (used on services & tools)
   ============================================================ */
.tier-grid { display: grid; gap: 1.5rem; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.tier {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
}
.tier.featured {
  border-color: var(--primary);
  box-shadow: 0 20px 50px -20px rgba(5, 150, 105, 0.35);
  position: relative;
}
.tier.featured::before {
  content: "Most Useful";
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: var(--on-primary);
  font-size: 0.72rem;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

/* ============================================================
   Search overlay
   ============================================================ */
.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(6px);
  display: none;
  align-items: flex-start;
  justify-content: center;
  z-index: 200;
  padding-top: 12vh;
}
.search-overlay.open { display: flex; }
.search-box {
  width: 100%;
  max-width: 600px;
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  animation: searchPop 0.2s ease;
}
@keyframes searchPop {
  from { transform: translateY(-10px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
.search-input {
  width: 100%;
  border: none;
  padding: 1.2rem 1.4rem;
  font-size: 1.1rem;
  background: transparent;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}
.search-input:focus { outline: none; box-shadow: none; }
.search-results {
  max-height: 60vh;
  overflow-y: auto;
  padding: 0.5rem;
}
.search-result {
  display: block;
  padding: 0.8rem 1rem;
  border-radius: 8px;
  color: var(--text);
  border-left: 3px solid transparent;
}
.search-result:hover, .search-result.focused {
  background: var(--bg-soft);
  border-left-color: var(--primary);
  text-decoration: none;
  color: var(--text);
}
.search-result-title { font-weight: 600; }
.search-result-snippet { font-size: 0.88rem; color: var(--text-soft); margin-top: 0.2rem; }
.search-empty { padding: 1.5rem; text-align: center; color: var(--text-soft); }

/* ============================================================
   Ad slots
   Hidden until real ad units are placed. After AdSense approval,
   replace each <div class="ad-slot"> with an <ins class="adsbygoogle">
   unit (see ADSENSE.md). Real ad units do not match .ad-slot, so
   they will display normally once swapped in.
   ============================================================ */
.ad-slot {
  display: none !important;
}

/* ============================================================
   Affiliate product picks
   ============================================================ */
.affiliate-disclosure {
  margin: 1.25rem 0 2rem;
  padding: 0.7rem 1rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  background: var(--bg-soft);
  border-left: 3px solid var(--border);
  border-radius: var(--radius-sm, 6px);
}
.affiliate-disclosure strong { color: var(--text); }

.product-pick {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
  margin: 1.75rem 0;
  padding: 1.1rem 1.2rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card, var(--bg-soft));
}
.product-pick-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--primary);
}
.product-pick-header svg { width: 16px; height: 16px; flex: none; }
.product-pick h4 {
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.35;
}
.product-pick-why {
  margin: 0;
  font-size: 0.94rem;
  color: var(--text);
}
.product-pick-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.9rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}
.product-pick-meta span::before {
  content: "·";
  margin-right: 0.55rem;
  color: var(--text-soft);
}
.product-pick-meta span:first-child::before { content: ""; margin: 0; }
.product-pick-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  align-self: flex-start;
  padding: 0.55rem 0.95rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
  background: var(--primary);
  border-radius: var(--radius-sm, 6px);
  text-decoration: none;
  transition: background 0.15s ease;
}
.product-pick-cta:hover { background: var(--primary-dark, var(--primary)); }
.product-pick-cta svg { width: 14px; height: 14px; }
.product-pick-footnote {
  margin: 0;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-style: italic;
}

/* ============================================================
   Animations on scroll
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   Author block
   ============================================================ */
.author-card {
  display: flex;
  gap: 1rem;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem;
  margin: 2.5rem 0;
}
.author-avatar {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--green-500), var(--green-700));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-family: var(--font-serif);
  font-size: 1.2rem;
  flex-shrink: 0;
}
.author-info p { margin: 0; font-size: 0.92rem; color: var(--text-muted); }
.author-name { font-weight: 600; color: var(--text); }

/* Sources */
.sources {
  margin-top: 2.5rem;
  padding: 1.3rem 1.5rem;
  background: var(--bg-soft);
  border-radius: var(--radius);
  font-size: 0.92rem;
}
.sources h4 {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-soft);
  margin: 0 0 0.7rem;
}
.sources ol { margin: 0; padding-left: 1.25rem; }
.sources li { margin-bottom: 0.4rem; color: var(--text-muted); }

/* Related articles strip */
.related {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin-top: 1.5rem;
}
.related-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  transition: all 0.15s;
}
.related-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  text-decoration: none;
}
.related-card .tag {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  font-weight: 600;
}
.related-card .title {
  display: block;
  margin-top: 0.4rem;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
  line-height: 1.35;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 960px) {
  .article-layout { grid-template-columns: 1fr; }
  .toc { display: none; }
}

@media (max-width: 780px) {
  .hero { padding: 3rem 1.25rem; }
  .hero-inner { grid-template-columns: 1fr; gap: 2rem; }
  .hero-visual { max-width: 320px; margin: 0 auto; }
  .container { padding: 3rem 1.25rem; }

  .nav-tools { border-left: none; padding-left: 0; }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--surface);
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    gap: 0.25rem;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.7rem 1rem; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .stat { border-right: none; border-bottom: 1px solid var(--border); }
  .stat:last-child { border-bottom: none; }
  .calc-row { grid-template-columns: 1fr; }
  .calendar { font-size: 0.65rem; grid-template-columns: 120px repeat(12, 1fr); }
}

@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; }
  .newsletter-form { flex-direction: column; }
}

/* Print */
@media print {
  .site-header, .site-footer, .ad-slot, .toc, .nav-toggle, .progress-bar { display: none !important; }
  body { background: #fff; color: #000; }
  a { color: #000; text-decoration: underline; }
  .container, .container-narrow, .article-layout { max-width: 100%; padding: 0; display: block; }
}