:root {
  --bg: #F8FAFC;
  --surface: #FFFFFF;
  --surface-2: #EEF4F9;
  --text: #1E2432;
  --text-2: #6D7687;
  --primary: #3D7EFF;
  --secondary: #67C7FF;
  --highlight: #25C78A;
  --info: #7B8AFF;
  --border: #DCE5EF;
  --shadow: 0 20px 60px rgba(30, 36, 50, 0.12);
  --radius: 24px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  display: block;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -40px;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 8px 14px;
  border-radius: 999px;
  z-index: 999;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
}

.site-header {
  position: sticky;
  top: 12px;
  z-index: 50;
  margin: 12px auto 0;
  width: min(1200px, 92%);
  transition: all 0.3s ease;
}

.site-header.shrink {
  top: 6px;
  transform: scale(0.98);
}

.glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: var(--shadow);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.logo-mark {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.main-nav {
  display: flex;
  gap: 18px;
  font-size: 14px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn {
  border: 1px solid var(--border);
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--surface);
  cursor: pointer;
  font-weight: 600;
}

.btn.primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border: none;
}

.btn.ghost {
  background: transparent;
}

.btn:focus-visible,
.icon-btn:focus-visible,
select:focus-visible,
input:focus-visible,
textarea:focus-visible,
a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(61, 126, 255, 0.35);
  outline-offset: 2px;
}

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  cursor: pointer;
  position: relative;
}

.icon-moon::before {
  content: "";
  position: absolute;
  inset: 12px;
  border-radius: 50%;
  box-shadow: -6px 0 0 0 var(--text);
  border: none;
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
  padding: 120px 8% 60px;
  position: relative;
}

.hero-left .eyebrow {
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-2);
  font-size: 12px;
}

.hero-left h1 {
  font-size: clamp(32px, 4vw, 54px);
  margin: 12px 0;
}

.lead {
  font-size: 18px;
  color: var(--text-2);
}

.cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 20px 0;
}

.meta-badges {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.badge {
  background: var(--surface-2);
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 12px;
}

.hero-visual {
  position: relative;
}

.float-card {
  position: absolute;
  bottom: 20px;
  left: -30px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  max-width: 220px;
}

.float-card.alt {
  top: 20px;
  right: -20px;
  bottom: auto;
  left: auto;
}

.mesh-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(circle at 20% 20%, rgba(61, 126, 255, 0.15), transparent 40%),
              radial-gradient(circle at 80% 10%, rgba(103, 199, 255, 0.2), transparent 40%),
              radial-gradient(circle at 70% 80%, rgba(37, 199, 138, 0.15), transparent 50%);
  filter: blur(10px);
}

section {
  padding: 60px 8%;
}

.section-head {
  margin-bottom: 24px;
}

.section-head h2 {
  font-size: clamp(26px, 3vw, 38px);
  margin-bottom: 8px;
}

.section-head p {
  color: var(--text-2);
  max-width: 800px;
}

.responsible-notice .notice-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.comparison-dashboard .filters {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.filter-group {
  display: grid;
  gap: 8px;
}

.filter-group select {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px;
  background: var(--surface);
}

.comparison-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.compare-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.compare-card .tag {
  background: var(--surface-2);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  display: inline-block;
}

.expand-btn {
  border: none;
  background: var(--surface-2);
  padding: 8px 12px;
  border-radius: 10px;
  cursor: pointer;
}

.expand-panel {
  display: none;
  color: var(--text-2);
}

.expand-panel.open {
  display: grid;
  gap: 8px;
}

.responsible-reminder {
  color: var(--highlight);
}

.quick-drawer {
  margin-top: 24px;
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.drawer-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.category-grid,
.review-grid,
.compatibility-grid,
.transparency-cards {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.category-card,
.compat-card,
.glass-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.review-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.review-content {
  padding: 16px;
}

.review-meta {
  display: flex;
  justify-content: space-between;
  color: var(--text-2);
  font-size: 12px;
}

.tag-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.learning-centre {
  background: var(--surface-2);
}

.guide-carousel {
  display: flex;
  align-items: center;
  gap: 12px;
}

.guide-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(220px, 1fr);
  gap: 16px;
  overflow: hidden;
}

.guide-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  min-height: 160px;
  box-shadow: var(--shadow);
}

.timeline {
  display: grid;
  gap: 16px;
}

.timeline-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.accordion .accordion-btn {
  width: 100%;
  text-align: left;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px;
  margin-bottom: 10px;
  cursor: pointer;
}

.accordion-panel {
  display: none;
  padding: 10px 14px 20px;
  color: var(--text-2);
}

.accordion-panel.open {
  display: block;
}

.contact-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 14px;
}

.form-row {
  display: grid;
  gap: 6px;
}

input, textarea, select {
  padding: 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  font-family: inherit;
}

textarea {
  min-height: 120px;
}

.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 40px 8%;
}

.footer-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-col li {
  margin-bottom: 8px;
}

.footer-contact {
  margin-top: 12px;
  color: var(--text-2);
  font-size: 14px;
}

.social-links {
  display: flex;
  gap: 12px;
  margin-top: 12px;
  flex-wrap: wrap;
  font-size: 14px;
}

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

.cookie-banner,
.cookie-manager {
  position: fixed;
  left: 20px;
  right: 20px;
  bottom: 20px;
  z-index: 100;
  display: none;
}

.cookie-banner.active,
.cookie-manager.active {
  display: block;
}

.cookie-content,
.manager-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 10px 0;
}

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  width: 0;
  z-index: 200;
}

.legal-content {
  padding: 120px 8% 60px;
  max-width: 900px;
  margin: 0 auto;
}

.legal-content h1 {
  margin-bottom: 10px;
}

.dark {
  --bg: #0F141E;
  --surface: #111827;
  --surface-2: #1F2937;
  --text: #F3F4F6;
  --text-2: #9CA3AF;
  --border: #2B3647;
  --shadow: 0 20px 50px rgba(0,0,0,0.4);
}

@media (max-width: 900px) {
  .main-nav {
    display: none;
  }
  .float-card {
    display: none;
  }
  .hero {
    padding-top: 140px;
  }
  .guide-track {
    overflow-x: auto;
    scroll-snap-type: x mandatory;
  }
  .guide-card {
    scroll-snap-align: start;
  }
}