/* ============================================
   CSS Variables
   ============================================ */
:root {
  --blue: #1a73e8;
  --blue-dark: #1557b0;
  --blue-light: #e8f0fe;
  --green: #34a853;
  --red: #ea4335;
  --yellow: #fbbc04;
  --text: #202124;
  --text-secondary: #5f6368;
  --border: #dadce0;
  --bg: #ffffff;
  --bg-light: #f8f9fa;
  --bg-blue: #e8f0fe;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow: 0 4px 12px rgba(0,0,0,.1);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.12);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --font: 'Google Sans', 'Roboto', 'Segoe UI', sans-serif;
  --transition: .2s ease;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

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

img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--blue-dark); }
ul { list-style: none; }
button { cursor: pointer; font-family: var(--font); }

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
}
h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.25rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
h4 { font-size: 1.125rem; }
p { color: var(--text-secondary); line-height: 1.75; }

/* ============================================
   Layout
   ============================================ */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section--gray {
  background: var(--bg-light);
}

.section-label {
  display: inline-block;
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--blue);
  background: var(--bg-blue);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  max-width: 640px;
  margin: 0 auto;
  font-size: 1.0625rem;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 100px;
  font-size: .9375rem;
  font-weight: 500;
  border: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
  line-height: 1;
}

.btn--primary {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}
.btn--primary:hover {
  background: var(--blue-dark);
  border-color: var(--blue-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(26,115,232,.35);
}

.btn--outline {
  background: transparent;
  color: var(--blue);
  border-color: var(--blue);
}
.btn--outline:hover {
  background: var(--blue-light);
  color: var(--blue-dark);
}

.btn--white {
  background: #fff;
  color: var(--blue);
  border-color: #fff;
}
.btn--white:hover {
  background: rgba(255,255,255,.9);
  color: var(--blue-dark);
  transform: translateY(-1px);
}

.btn--lg {
  padding: 16px 36px;
  font-size: 1rem;
}

/* ============================================
   Header / Navigation
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
}
.site-logo:hover { color: var(--text); }

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--blue);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.logo-icon svg { width: 20px; height: 20px; fill: #fff; }

.logo-text span { color: var(--blue); }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-menu li { position: relative; }

.nav-menu li a {
  display: flex;
  align-items: center;
  padding: 8px 14px;
  color: var(--text-secondary);
  font-size: .9375rem;
  font-weight: 500;
  border-radius: 8px;
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}

.nav-menu li a:hover { color: var(--text); background: var(--bg-light); }

/* Active page – gạch chân màu xanh */
.nav-menu li.current-menu-item > a,
.nav-menu li.current-menu-ancestor > a {
  color: var(--blue);
  background: var(--bg-blue);
  font-weight: 600;
}
.nav-menu li.current-menu-item > a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 14px;
  right: 14px;
  height: 2px;
  background: var(--blue);
  border-radius: 2px;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 4px;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all .3s;
}


/* ============================================
   Hero Section
   ============================================ */
.hero {
  padding: 160px 0 100px;
  background: linear-gradient(135deg, #f0f4ff 0%, #e8f0fe 40%, #fff 100%);
  overflow: hidden;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(26,115,232,.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 8px 16px 8px 8px;
  font-size: .8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}
.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .6; transform: scale(1.3); }
}

.hero h1 {
  margin-bottom: 20px;
  color: var(--text);
}
.hero h1 span { color: var(--blue); }

.hero-desc {
  font-size: 1.125rem;
  margin-bottom: 36px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
}
.stat-num {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
}
.stat-label {
  font-size: .8125rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* Hero visual */
.hero-visual {
  position: relative;
}

.hero-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}

.hero-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.gws-logo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.gws-app {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-light);
  transition: all var(--transition);
  cursor: default;
}
.gws-app:hover {
  background: var(--bg-blue);
  transform: translateY(-2px);
}
.gws-app-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}
.gws-app span { font-size: .75rem; font-weight: 500; color: var(--text-secondary); }

.hero-float-badge {
  position: absolute;
  background: #fff;
  border-radius: var(--radius);
  padding: 12px 16px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  font-size: .875rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero-float-badge--1 {
  top: -20px;
  right: -20px;
  color: var(--green);
}
.hero-float-badge--2 {
  bottom: -20px;
  left: -20px;
  color: var(--blue);
}

/* ============================================
   Partner Badge
   ============================================ */
.partner-strip {
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 24px 0;
}

.partner-strip-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.partner-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  border: 1.5px solid var(--border);
  border-radius: 100px;
  font-size: .875rem;
  font-weight: 600;
  color: var(--text);
}

.google-colors {
  display: flex;
  gap: 3px;
}
.google-colors span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

/* ============================================
   Benefits Section
   ============================================ */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.benefit-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: all var(--transition);
}
.benefit-card:hover {
  border-color: var(--blue);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.benefit-icon {
  width: 56px;
  height: 56px;
  background: var(--bg-blue);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.benefit-card h3 { margin-bottom: 12px; }

/* ============================================
   Features Section
   ============================================ */
.features-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 48px;
}

.feature-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1.5px solid var(--border);
  border-radius: 100px;
  background: #fff;
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}
.feature-tab:hover,
.feature-tab.active {
  border-color: var(--blue);
  background: var(--bg-blue);
  color: var(--blue);
}

.feature-content {
  display: none;
}
.feature-content.active {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.feature-text h3 {
  font-size: 1.625rem;
  margin-bottom: 16px;
}
.feature-text p { margin-bottom: 24px; }

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: .9375rem;
}

.feature-list li::before {
  content: '';
  width: 20px;
  height: 20px;
  background: var(--green);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 2px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='white'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z'/%3E%3C/svg%3E");
  background-size: 12px;
  background-repeat: no-repeat;
  background-position: center;
}

.feature-list li span { color: var(--text-secondary); line-height: 1.6; }

.feature-visual {
  background: linear-gradient(135deg, #e8f0fe 0%, #f0f4ff 100%);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  font-size: 5rem;
}

/* ============================================
   Pricing Section
   ============================================ */
.pricing-note {
  text-align: center;
  font-size: .875rem;
  color: var(--text-secondary);
  margin-bottom: 48px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.pricing-card {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: relative;
  transition: all var(--transition);
}
.pricing-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.pricing-card.popular {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(26,115,232,.1);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--blue);
  color: #fff;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .05em;
  padding: 5px 14px;
  border-radius: 100px;
  white-space: nowrap;
}

.pricing-plan-name {
  font-size: .875rem;
  font-weight: 600;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 12px;
}

.pricing-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 4px;
}
.price-currency { font-size: 1.25rem; font-weight: 600; color: var(--text); }
.price-amount { font-size: 2.75rem; font-weight: 700; color: var(--text); line-height: 1; }
.price-period { font-size: .875rem; color: var(--text-secondary); }

.pricing-desc { font-size: .875rem; margin-bottom: 24px; }
.pricing-trial {
  display: inline-block;
  background: rgba(52,168,83,.1);
  color: var(--green);
  font-size: .8125rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 24px;
}

.pricing-divider {
  height: 1px;
  background: var(--border);
  margin: 20px 0;
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .875rem;
}
.pricing-features li::before {
  content: '';
  width: 18px;
  height: 18px;
  background: var(--green);
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 1px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='white'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z'/%3E%3C/svg%3E");
  background-size: 11px;
  background-repeat: no-repeat;
  background-position: center;
}
.pricing-features li span { color: var(--text-secondary); line-height: 1.5; }

.pricing-card .btn { width: 100%; justify-content: center; }

.pricing-enterprise {
  margin-top: 24px;
  background: linear-gradient(135deg, #1a73e8 0%, #1557b0 100%);
  border-radius: var(--radius-lg);
  padding: 40px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  color: #fff;
}
.pricing-enterprise h3 { color: #fff; margin-bottom: 8px; }
.pricing-enterprise p { color: rgba(255,255,255,.8); max-width: 480px; }

/* ============================================
   Process Section
   ============================================ */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.process-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  position: relative;
  transition: all var(--transition);
}
.process-card:hover {
  border-color: var(--blue);
  box-shadow: var(--shadow-sm);
}

.process-num {
  width: 44px;
  height: 44px;
  background: var(--blue);
  color: #fff;
  font-size: .9375rem;
  font-weight: 700;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.process-card h4 { margin-bottom: 8px; }

/* ============================================
   Contact Section
   ============================================ */
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contact-info h2 { margin-bottom: 16px; }
.contact-info > p { margin-bottom: 36px; }

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 32px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-icon {
  width: 44px;
  height: 44px;
  background: var(--bg-blue);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.125rem;
}

.contact-item-text strong {
  display: block;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}
.contact-item-text span { font-size: .9375rem; color: var(--text-secondary); }

.contact-form-wrap {
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.contact-form-wrap h3 { margin-bottom: 24px; }

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: .875rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .9375rem;
  font-family: var(--font);
  color: var(--text);
  background: #fff;
  transition: border-color var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(26,115,232,.12);
}
.form-group textarea { resize: vertical; min-height: 120px; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-submit .btn { width: 100%; justify-content: center; margin-top: 8px; }

.form-success {
  display: none;
  text-align: center;
  padding: 24px;
  color: var(--green);
  font-weight: 500;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  background: #0d1117;
  color: rgba(255,255,255,.7);
  padding: 72px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}

.footer-brand p {
  font-size: .9375rem;
  line-height: 1.75;
  margin-top: 16px;
  color: rgba(255,255,255,.5);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.0625rem;
  font-weight: 700;
  color: #fff;
}
.footer-logo span { color: #7ba7f7; }

.footer-col h5 {
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: rgba(255,255,255,.4);
  margin-bottom: 16px;
}

.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a {
  font-size: .9375rem;
  color: rgba(255,255,255,.6);
  transition: color var(--transition);
}
.footer-col ul a:hover { color: #fff; }

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-contact-list li {
  font-size: .875rem;
  color: rgba(255,255,255,.6);
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-divider {
  height: 1px;
  background: rgba(255,255,255,.08);
  margin-bottom: 28px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p { font-size: .875rem; color: rgba(255,255,255,.4); }

.footer-bottom-links {
  display: flex;
  gap: 24px;
}
.footer-bottom-links a { font-size: .875rem; color: rgba(255,255,255,.4); transition: color var(--transition); }
.footer-bottom-links a:hover { color: rgba(255,255,255,.7); }

/* ============================================
   Blog / Single Post
   ============================================ */
.blog-header {
  padding: 140px 0 60px;
  background: linear-gradient(135deg, #f0f4ff 0%, #e8f0fe 100%);
  text-align: center;
}
.blog-header .section-label { margin-bottom: 16px; }
.blog-header h1 { max-width: 760px; margin: 0 auto 20px; }
.blog-header .post-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  font-size: .875rem;
  color: var(--text-secondary);
  flex-wrap: wrap;
}

.post-layout {
  padding: 72px 0;
}
.post-layout .container {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 64px;
  align-items: start;
}

.post-content h2 { margin: 48px 0 16px; font-size: 1.625rem; }
.post-content h3 { margin: 32px 0 12px; }
.post-content p { margin-bottom: 20px; font-size: 1.0625rem; line-height: 1.8; color: #3c4043; }
.post-content ul, .post-content ol { margin: 0 0 20px 20px; }
.post-content li { margin-bottom: 8px; font-size: 1.0625rem; line-height: 1.7; color: #3c4043; }
.post-content strong { color: var(--text); }

.post-toc {
  position: sticky;
  top: 96px;
  background: var(--bg-light);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
}
.post-toc h5 { font-size: .875rem; font-weight: 600; margin-bottom: 12px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: .06em; }
.post-toc ul { display: flex; flex-direction: column; gap: 6px; }
.post-toc ul a { font-size: .875rem; color: var(--text-secondary); display: block; padding: 4px 0; border-left: 2px solid transparent; padding-left: 10px; transition: all var(--transition); }
.post-toc ul a:hover { color: var(--blue); border-color: var(--blue); }

/* ============================================
   Scroll to top
   ============================================ */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--blue);
  color: #fff;
  border: none;
  border-radius: 50%;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition);
  z-index: 500;
}
.scroll-top.visible { opacity: 1; pointer-events: auto; }
.scroll-top:hover { background: var(--blue-dark); transform: translateY(-2px); }

/* ============================================
   Utility
   ============================================ */
.text-center { text-align: center; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { display: none; }
  .benefits-grid { grid-template-columns: 1fr 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .post-layout .container { grid-template-columns: 1fr; }
  .post-toc { position: static; }
  .nav-menu, .header-cta { display: none; }
  .hamburger { display: flex; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .hero { padding: 120px 0 72px; }
  .benefits-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .contact-inner { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .feature-content.active { grid-template-columns: 1fr; gap: 32px; }
  .pricing-enterprise { flex-direction: column; text-align: center; padding: 32px 24px; }
  .form-row { grid-template-columns: 1fr; }
  .hero-stats { gap: 20px; }
}

@media (max-width: 480px) {
  .process-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .features-tabs { gap: 6px; }
  .feature-tab { padding: 8px 14px; font-size: .8125rem; }
}

/* ============================================
   Reading progress bar
   ============================================ */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--blue);
  z-index: 1100;
  width: 0%;
  transition: width .1s linear;
}

/* ============================================
   Header – improvements
   ============================================ */
.logo-text {
  display: flex;
  flex-direction: column;
  gap: 0;
  line-height: 1;
}
.logo-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}
.logo-name em {
  font-style: normal;
  color: var(--blue);
}
.logo-tagline {
  font-size: .625rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-top: 2px;
}

.header-phone {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
}
.header-phone:hover { color: var(--blue); }

.header-cta-divider {
  width: 1px;
  height: 20px;
  background: var(--border);
}

/* Mobile nav – overlay drawer */
.mobile-nav {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  right: 0;
  left: auto;
  bottom: 0;
  width: 300px;
  max-width: 85vw;
  background: #fff;
  z-index: 1050;
  box-shadow: -8px 0 32px rgba(0,0,0,.12);
  transform: translateX(100%);
  transition: transform .3s cubic-bezier(.4,0,.2,1);
  overflow-y: auto;
}
.mobile-nav.open {
  transform: translateX(0);
  display: flex;
}
.mobile-nav-inner {
  display: flex;
  flex-direction: column;
  padding: 88px 24px 32px;
  min-height: 100%;
  gap: 24px;
}

.mobile-nav-links ul {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.mobile-nav-links ul a {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}
.mobile-nav-links ul a:hover,
.mobile-nav-links .current-menu-item a {
  background: var(--bg-blue);
  color: var(--blue);
}

.mobile-nav-contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px;
  background: var(--bg-light);
  border-radius: var(--radius);
}
.mobile-contact-link {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .875rem;
  color: var(--text-secondary);
  transition: color var(--transition);
}
.mobile-contact-link:hover { color: var(--blue); }

.mobile-nav-cta {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: auto;
}
.mobile-nav-cta .btn { width: 100%; justify-content: center; }

/* Overlay dark bg */
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.4);
  z-index: 1040;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  opacity: 0;
  transition: opacity .3s;
}
.mobile-overlay.open {
  display: block;
  opacity: 1;
}

/* hamburger icon toggle */
.hamburger { background: none; border: none; padding: 8px; color: var(--text); display: none; }
.hamburger:hover { color: var(--blue); }

/* ============================================
   Blog Hero
   ============================================ */
.blog-hero {
  padding: 140px 0 56px;
  background: linear-gradient(135deg, #f0f4ff 0%, #e8f0fe 60%, #fff 100%);
  position: relative;
  overflow: hidden;
}
.blog-hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -120px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(26,115,232,.07) 0%, transparent 70%);
  pointer-events: none;
}
.blog-hero .section-label { display: block; margin-bottom: 12px; }
.blog-hero h1 { margin-bottom: 12px; }
.blog-hero > .container > p { font-size: 1.0625rem; max-width: 540px; margin-bottom: 32px; }

/* Category pills */
.blog-cats {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.cat-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border: 1.5px solid var(--border);
  border-radius: 100px;
  font-size: .8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: #fff;
  transition: all var(--transition);
}
.cat-pill:hover, .cat-pill.active {
  border-color: var(--blue);
  background: var(--blue);
  color: #fff;
}
.cat-count {
  background: rgba(255,255,255,.25);
  border-radius: 100px;
  padding: 1px 7px;
  font-size: .6875rem;
  font-weight: 600;
}
.cat-pill:not(.active) .cat-count {
  background: var(--bg-light);
  color: var(--text-secondary);
}

/* ============================================
   Blog Section
   ============================================ */
.blog-section { padding-top: 56px; }

/* Featured post */
.post-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 40px;
  transition: box-shadow var(--transition);
}
.post-featured:hover { box-shadow: var(--shadow); }

.post-featured-img {
  display: block;
  overflow: hidden;
  min-height: 320px;
}
.post-featured-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.post-featured:hover .post-featured-img img { transform: scale(1.03); }

.post-featured-body {
  padding: 40px 40px 40px 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.post-featured-title {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  margin: 12px 0 16px;
  line-height: 1.3;
}
.post-featured-title a { color: var(--text); }
.post-featured-title a:hover { color: var(--blue); }
.post-featured-excerpt { margin-bottom: 28px; }

/* Post meta row */
.post-meta-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}
.post-cat a { font-size: .8125rem; font-weight: 600; color: var(--blue); text-transform: uppercase; letter-spacing: .05em; }
.post-meta-sep { color: var(--border); font-size: .75rem; }
.post-date { font-size: .8125rem; color: var(--text-secondary); }
.post-read-time { font-size: .8125rem; color: var(--text-secondary); }

/* Blog grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

/* Post card */
.post-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
}
.post-card:hover {
  border-color: rgba(26,115,232,.3);
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.post-card-img {
  display: block;
  height: 200px;
  overflow: hidden;
  background: var(--bg-light);
  position: relative;
}
.post-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.post-card:hover .post-card-img img { transform: scale(1.04); }
.post-card-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 60%, rgba(0,0,0,.1));
}
.post-card-img--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.post-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.post-card-title {
  font-size: 1rem;
  margin: 8px 0 10px;
  line-height: 1.45;
}
.post-card-title a { color: var(--text); }
.post-card-title a:hover { color: var(--blue); }
.post-card-excerpt { font-size: .875rem; flex: 1; margin-bottom: 0; }

.post-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.post-read-link {
  font-size: .8125rem;
  font-weight: 600;
  color: var(--blue);
}
.post-read-link:hover { color: var(--blue-dark); }

/* Pagination */
.blog-pagination { margin-top: 56px; }
.blog-pagination .nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex-wrap: wrap;
}
.blog-pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.blog-pagination .page-numbers:hover,
.blog-pagination .page-numbers.current {
  border-color: var(--blue);
  background: var(--blue);
  color: #fff;
}
.blog-pagination .page-numbers.dots { border-color: transparent; background: none; }

/* Empty state */
.blog-empty {
  text-align: center;
  padding: 80px 24px;
}
.blog-empty-icon { font-size: 4rem; margin-bottom: 16px; }
.blog-empty h3 { margin-bottom: 8px; }
.blog-empty p { margin-bottom: 28px; }

/* Blog CTA strip */
.blog-cta-strip {
  background: linear-gradient(135deg, #1a73e8 0%, #1557b0 100%);
  padding: 48px 0;
  margin-top: 72px;
}
.blog-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.blog-cta-inner h3 { color: #fff; margin-bottom: 6px; }
.blog-cta-inner p { color: rgba(255,255,255,.8); margin: 0; }

/* ============================================
   Single Post
   ============================================ */

/* Breadcrumb */
.breadcrumb-nav {
  padding: 80px 0 0;
  background: #fff;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  list-style: none;
  padding: 12px 0;
  font-size: .8125rem;
}
.breadcrumb a { color: var(--text-secondary); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--blue); }
.breadcrumb-sep { color: var(--border); }
.breadcrumb-current { color: var(--text); font-weight: 500; }

/* Post header */
.blog-header {
  padding: 20px 0 48px;
  background: #fff;
}
.post-cat-link { text-decoration: none; }
.blog-header h1 { margin: 12px 0 20px; max-width: 820px; }
.post-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.post-meta-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: .875rem;
  color: var(--text-secondary);
}

/* Featured image */
.post-featured-image { padding: 0 0 40px; background: #fff; }
.post-hero-img {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  display: block;
}

/* Post layout */
.post-layout { padding: 0 0 80px; background: #fff; }
.post-layout .container {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 56px;
  align-items: start;
}

/* Post content typography */
.post-content { min-width: 0; }
.post-content h2 {
  font-size: 1.625rem;
  margin: 48px 0 16px;
  padding-top: 8px;
  color: var(--text);
}
.post-content h3 {
  font-size: 1.25rem;
  margin: 32px 0 12px;
  color: var(--text);
}
.post-content p {
  margin-bottom: 20px;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: #3c4043;
}
.post-content ul, .post-content ol {
  margin: 0 0 24px 24px;
}
.post-content li {
  margin-bottom: 8px;
  font-size: 1.0625rem;
  line-height: 1.7;
  color: #3c4043;
}
.post-content strong { color: var(--text); }
.post-content a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }
.post-content img { border-radius: var(--radius); margin: 24px 0; box-shadow: var(--shadow-sm); }
.post-content blockquote {
  border-left: 3px solid var(--blue);
  margin: 32px 0;
  padding: 16px 24px;
  background: var(--bg-blue);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.post-content blockquote p { color: var(--text); font-style: italic; margin: 0; }
.post-content table { width: 100%; border-collapse: collapse; margin: 24px 0; }
.post-content th { background: var(--bg-light); font-weight: 600; }
.post-content th, .post-content td {
  padding: 10px 14px;
  border: 1px solid var(--border);
  font-size: .9375rem;
  text-align: left;
}

/* Tags */
.post-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  font-size: .875rem;
  color: var(--text-secondary);
}
.post-tags .tag-list a {
  display: inline-block;
  padding: 4px 12px;
  background: var(--bg-light);
  border-radius: 100px;
  font-size: .8125rem;
  color: var(--text-secondary);
  margin: 2px;
  transition: all var(--transition);
  text-decoration: none;
}
.post-tags .tag-list a:hover { background: var(--bg-blue); color: var(--blue); }

/* Share buttons */
.post-share {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 24px;
  padding: 20px 0;
}
.post-share-label { font-size: .875rem; font-weight: 600; color: var(--text); }
.share-buttons { display: flex; gap: 8px; }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  border-radius: 100px;
  font-size: .8125rem;
  font-weight: 500;
  transition: all var(--transition);
  border: 1.5px solid var(--border);
  background: #fff;
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--font);
}
.share-btn:hover { border-color: var(--blue); color: var(--blue); }
.share-btn--fb:hover { border-color: #1877f2; color: #1877f2; }
.share-btn--copied { border-color: var(--green) !important; color: var(--green) !important; }

/* Sidebar */
.post-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 96px;
}

/* TOC */
.post-toc {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.toc-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 20px;
  background: #fff;
  border-bottom: 1px solid var(--border);
  font-size: .8125rem;
  font-weight: 700;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: .06em;
}
#toc-nav { padding: 12px 0; }
#toc-nav a {
  display: block;
  padding: 6px 20px;
  font-size: .875rem;
  color: var(--text-secondary);
  border-left: 2px solid transparent;
  transition: all var(--transition);
  line-height: 1.45;
  text-decoration: none;
}
#toc-nav a:hover { color: var(--blue); border-color: var(--blue); background: var(--bg-blue); }
#toc-nav a.toc-active { color: var(--blue); border-color: var(--blue); font-weight: 500; }
#toc-nav a.toc-h3 { padding-left: 32px; font-size: .8125rem; }
.toc-loading { font-size: .8125rem; color: var(--text-secondary); padding: 12px 20px; margin: 0; }

/* Sidebar CTA */
.sidebar-cta {
  background: linear-gradient(135deg, #e8f0fe 0%, #f0f4ff 100%);
  border: 1px solid rgba(26,115,232,.15);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}
.sidebar-cta-icon { font-size: 2rem; margin-bottom: 12px; }
.sidebar-cta h4 { margin-bottom: 8px; font-size: 1rem; }
.sidebar-cta p { font-size: .875rem; margin-bottom: 16px; }
.sidebar-phone {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 12px;
  font-size: .875rem;
  font-weight: 500;
  color: var(--blue);
}

/* Sidebar related */
.sidebar-related { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.sidebar-heading {
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-secondary);
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  margin: 0;
}
.related-list { display: flex; flex-direction: column; }
.related-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
  text-decoration: none;
}
.related-item:last-child { border-bottom: none; }
.related-item:hover { background: var(--bg-light); }
.related-thumb {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}
.related-thumb img { width: 100%; height: 100%; object-fit: cover; }
.related-text { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.related-title { font-size: .875rem; font-weight: 500; color: var(--text); line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-meta { font-size: .75rem; color: var(--text-secondary); }

/* Post nav strip */
.post-nav-strip {
  background: var(--bg-light);
  border-top: 1px solid var(--border);
  padding: 24px 0;
}
.post-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.post-prev-next {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.post-nav-link {
  display: flex;
  flex-direction: column;
  gap: 3px;
  max-width: 220px;
  text-decoration: none;
}
.post-nav-dir {
  font-size: .75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: .06em;
}
.post-nav-title {
  font-size: .875rem;
  font-weight: 500;
  color: var(--blue);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================
   Responsive – new additions
   ============================================ */
@media (max-width: 1024px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .post-featured { grid-template-columns: 1fr; }
  .post-featured-img { min-height: 240px; }
  .post-featured-body { padding: 28px; }
  .post-layout .container { grid-template-columns: 1fr; gap: 40px; }
  .post-sidebar { position: static; }
  .header-phone { display: none; }
  .header-cta-divider { display: none; }
}

@media (max-width: 768px) {
  .blog-grid { grid-template-columns: 1fr; }
  .blog-cta-inner { flex-direction: column; text-align: center; }
  .post-nav-inner { flex-direction: column; align-items: flex-start; gap: 16px; }
  .post-prev-next { flex-direction: column; gap: 12px; }
  .post-nav-link { max-width: none; }
  .breadcrumb-nav { padding-top: 72px; }
  .blog-hero { padding: 110px 0 48px; }
}