:root {
  --bg: #ffffff;
  --bg-card: #ffffff;
  --bg-subtle: #f8fafc;
  --text: #111827;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  /* Subsweeper Greenish Charm */
  --primary: #10b981; 
  --primary-hover: #059669;
  --primary-light: #ecfdf5;
  --primary-border: #d1fae5;
  --radius: 8px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.08);
  --transition: 0.2s ease;
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--primary-hover);
  text-decoration: none;
}

::selection {
  background: #a7f3d0;
  color: #064e3b;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ──────────── Navigation ──────────── */
.nav {
  padding: 0;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.logo {
  font-weight: 800;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none !important;
  letter-spacing: -0.01em;
}

.logo img {
  transition: transform var(--transition);
}
.logo:hover img {
  transform: scale(1.08);
}

.logo-icon {
  color: var(--primary);
}

.nav-links {
  display: flex;
  gap: 20px;
  align-items: center;
}

.nav-links a {
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none !important;
  font-size: 0.9rem;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--text);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #fff !important;
  padding: 9px 18px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.85rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none !important;
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.25);
}

.btn:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
}

/* ──────────── Homepage Hero & Search ──────────── */
.hero {
  padding: 80px 0 48px;
  text-align: center;
}
.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--text) 60%, var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.7;
}
.search-bar {
  max-width: 520px;
  margin: 0 auto;
  position: relative;
}
.search-bar::before {
  content: "🔍";
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.1rem;
  z-index: 1;
  pointer-events: none;
}
.search-bar input {
  width: 100%;
  padding: 16px 24px 16px 48px;
  border: 2px solid var(--border);
  border-radius: 14px;
  font-size: 1rem;
  outline: none;
  box-shadow: var(--shadow-md);
  transition: all var(--transition);
  font-family: var(--font);
}
.search-bar input:focus {
  border-color: var(--primary);
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.15);
}
.search-bar input::placeholder {
  color: #9ca3af;
}

/* ──────────── Article Layout ──────────── */
.article-container {
  display: grid;
  grid-template-columns: 1fr;
  padding-bottom: 80px;
  max-width: 760px;
  margin: 0 auto;
}

/* Header & Meta */
.breadcrumbs {
  margin: 32px 0 24px;
  font-size: 0.85rem;
}
.breadcrumbs a {
  color: var(--text-muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition);
}
.breadcrumbs a::before {
  content: "←";
  font-size: 1rem;
  line-height: 1;
}
.breadcrumbs a:hover {
  color: var(--primary);
}

.meta-tag {
  color: var(--primary);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: inline-block;
  background: var(--primary-light);
  padding: 4px 10px;
  border-radius: 4px;
}

.article-title {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 2.1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  color: var(--text);
  line-height: 1.2;
}

.article-icon {
  width: 52px;
  height: 52px;
  min-width: 52px;
  border-radius: 14px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  border: 1px solid var(--primary-border);
  color: var(--primary);
}

.article-meta {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 28px;
}

.article-intro {
  font-size: 1.1rem;
  color: #374151;
  margin-bottom: 36px;
  line-height: 1.7;
}

/* ──────────── Hero Banner ──────────── */
.hero-banner {
  background: linear-gradient(135deg, #064e3b 0%, #0f172a 100%);
  border-radius: 20px;
  padding: 48px 40px;
  position: relative;
  overflow: hidden;
  margin-bottom: 36px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.hero-banner::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-banner-content {
  position: relative;
  z-index: 2;
}

.hero-banner-tag {
  background: rgba(16, 185, 129, 0.2);
  color: #6ee7b7;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: inline-block;
  margin-bottom: 12px;
}

.hero-banner h2 {
  color: #fff;
  font-size: 1.8rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.02em;
}

.hero-banner-icon {
  background: #fff;
  width: 72px;
  height: 72px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--text);
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  z-index: 2;
  font-weight: bold;
}

/* ──────────── Table of Contents (TOC) ──────────── */
.toc-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 24px;
  margin-bottom: 36px;
  background: var(--bg-subtle);
}

.toc-card h3 {
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.toc-list {
  list-style: none;
}
.toc-list li {
  margin-bottom: 10px;
}
.toc-list li:last-child {
  margin-bottom: 0;
}
.toc-list a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.toc-list a::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.5;
  transition: opacity var(--transition);
}
.toc-list a:hover {
  color: var(--primary);
}
.toc-list a:hover::before {
  opacity: 1;
}

/* ──────────── Quick Action Box ──────────── */
.quick-action-card {
  border: 2px solid #34d399;
  border-radius: 14px;
  padding: 20px 24px;
  margin-bottom: 36px;
  background: var(--primary-light);
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 16px;
  text-decoration: none !important;
  color: inherit;
}

.quick-action-card::before {
  content: "→";
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
  transition: transform var(--transition);
}

.quick-action-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.15);
  text-decoration: none;
  border-color: var(--primary);
}
.quick-action-card:hover::before {
  transform: translateX(4px);
}

.quick-action-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 2px;
  color: #065f46;
}
.quick-action-card p {
  font-size: 0.85rem;
  color: #047857;
  margin: 0;
}
.action-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 14px;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}
.action-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ──────────── Content Sections ──────────── */
.content-section {
  margin-bottom: 48px;
}
.content-section h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.content-section > p {
  margin-bottom: 20px;
  font-size: 1rem;
  line-height: 1.7;
}

/* ──────────── Custom Numbered Steps ──────────── */
.step-item {
  margin-bottom: 28px;
  position: relative;
  padding-left: 52px;
}
.step-number {
  position: absolute;
  left: 0;
  top: 2px;
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
  background: var(--primary);
  width: 32px;
  height: 32px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-item h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 6px;
}
.step-item p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ──────────── Promo Banner (Subsweeper) ──────────── */
.promo-banner {
  border-left: 4px solid var(--primary);
  background: linear-gradient(135deg, #f0fdf4 0%, var(--bg-subtle) 100%);
  padding: 28px 32px;
  margin: 36px 0;
  border-radius: 0 14px 14px 0;
  position: relative;
  overflow: hidden;
}
.promo-banner::after {
  content: "🧹";
  font-size: 5rem;
  position: absolute;
  right: -10px;
  bottom: -20px;
  opacity: 0.08;
  pointer-events: none;
}
.promo-banner h3 {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 6px;
}
.promo-banner p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  max-width: 400px;
  line-height: 1.6;
}
.promo-badges {
  display: flex;
  gap: 12px;
}
.badge {
  background: var(--text);
  color: #fff;
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none !important;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.badge::before {
  content: "";
}
.badge:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ──────────── Accordion FAQs ──────────── */
details {
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}
details:first-of-type {
  border-top: 1px solid var(--border);
}
summary {
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text);
  padding: 4px 0;
  transition: color var(--transition);
}
summary:hover {
  color: var(--primary);
}
summary::-webkit-details-marker {
  display: none;
}
summary::after {
  content: "+";
  color: var(--text-muted);
  font-size: 1.4rem;
  line-height: 1;
  transition: transform var(--transition);
  flex-shrink: 0;
}
details[open] summary::after {
  transform: rotate(45deg);
  color: var(--primary);
}
details p {
  margin-top: 12px;
  color: var(--text-muted);
  font-size: 0.95rem;
  padding-left: 16px;
  border-left: 2px solid var(--primary-border);
  line-height: 1.6;
}

/* ──────────── Alerts ──────────── */
.alert-warning {
  background: #fffbeb;
  border: 1px solid #fde68a;
  padding: 14px 16px;
  border-radius: 10px;
  display: flex;
  gap: 10px;
  margin: 24px 0;
  align-items: flex-start;
}
.alert-warning::before {
  content: "⚠️";
  flex-shrink: 0;
}
.alert-warning p {
  margin: 0;
  font-size: 0.9rem;
  color: #92400e;
  line-height: 1.5;
}

/* ──────────── Pricing Table ──────────── */
.pricing-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.pricing-table th, .pricing-table td {
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
  padding: 14px 20px;
  text-align: left;
}
.pricing-table tr:last-child td {
  border-bottom: none;
}
.pricing-table th {
  background: var(--bg-subtle);
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
}
.pricing-table tr:hover td {
  background: #fafafa;
}

/* ──────────── Forms ──────────── */
.form-group {
  margin-bottom: 24px;
}
.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 0.9rem;
}
.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-subtle);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.95rem;
  outline: none;
  transition: all var(--transition);
}
.form-control:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.12);
}
textarea.form-control {
  min-height: 140px;
  resize: vertical;
}

/* ──────────── Footer ──────────── */
.footer {
  padding: 48px 0;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
  background: var(--bg-subtle);
}

/* ──────────── Home Grid ──────────── */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  padding-bottom: 60px;
}
.card {
  border-radius: 14px;
  padding: 22px;
  background: #fff;
  transition: all var(--transition);
  position: relative;
}
.card:hover {
  box-shadow: var(--shadow-lg) !important;
  transform: translateY(-3px);
  border-color: var(--primary-border) !important;
}
.card h3 {
  font-size: 0.95rem;
  font-weight: 600;
}
.card p {
  font-size: 0.8rem;
}

/* ──────────── Responsive ──────────── */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }
  .hero p {
    font-size: 1rem;
  }
  .nav-links {
    gap: 12px;
  }
  .nav-links a {
    font-size: 0.8rem;
  }
  .btn {
    padding: 8px 12px;
    font-size: 0.8rem;
  }
  .article-title {
    font-size: 1.5rem;
    gap: 12px;
  }
  .article-icon {
    width: 40px;
    height: 40px;
    min-width: 40px;
    border-radius: 10px;
    font-size: 1.2rem;
  }
  .hero-banner {
    padding: 32px 24px;
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
  .hero-banner h2 {
    font-size: 1.4rem;
  }
  .hero-banner-icon {
    width: 56px;
    height: 56px;
  }
  .grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .card {
    padding: 16px;
  }
  .quick-action-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .quick-action-card::before {
    display: none;
  }
}

@media (max-width: 480px) {
  .grid {
    grid-template-columns: 1fr;
  }
  .nav .container {
    flex-direction: column;
    height: auto;
    padding: 12px 16px;
    gap: 8px;
  }
  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }
}

/* ──────────── Scroll to Top (back-to-top) ──────────── */
.scroll-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.3);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 50;
}
.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}
.scroll-top:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
}