:root {
  --bg: #0d1322;
  --bg-soft: #10182b;
  --fg: #e9eef9;
  --muted: #95a1bf;
  --accent: #4da3ff;
  --accent-strong: #2b7fe2;
  --card: rgba(255, 255, 255, 0.03);
  --shadow: 0 24px 70px rgba(6, 10, 22, 0.55);
  --radius: 18px;
  --radius-sm: 12px;
  --border: 1px solid rgba(255, 255, 255, 0.06);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  background: radial-gradient(circle at 20% 20%, rgba(77, 163, 255, 0.18), transparent 32%),
              radial-gradient(circle at 80% 0%, rgba(95, 247, 255, 0.16), transparent 30%),
              var(--bg);
  color: var(--fg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3 {
  margin: 0 0 10px;
  line-height: 1.3;
  color: #f4f7ff;
}

p {
  margin: 0 0 12px;
  color: var(--muted);
}

ul {
  padding-left: 18px;
  margin: 8px 0 12px;
  color: var(--muted);
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

header {
  padding: 28px 0 24px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  padding: 10px 14px;
  background: linear-gradient(135deg, rgba(77, 163, 255, 0.14), rgba(95, 247, 255, 0.12));
  border-radius: var(--radius-sm);
  border: var(--border);
  box-shadow: 0 8px 24px rgba(12, 18, 36, 0.4);
}

.brand-logo {
  font-size: 20px;
}

nav a {
  font-weight: 600;
  color: var(--muted);
}

nav a:hover {
  color: var(--accent);
}

.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(77, 163, 255, 0.18), rgba(16, 24, 45, 0.9));
  border-radius: 26px;
  padding: 42px;
  border: var(--border);
  box-shadow: var(--shadow);
  isolation: isolate;
}

.hero::after {
  content: "";
  position: absolute;
  inset: -40%;
  background: radial-gradient(circle at 30% 30%, rgba(95, 247, 255, 0.2), transparent 45%),
              radial-gradient(circle at 80% 20%, rgba(77, 163, 255, 0.25), transparent 35%);
  filter: blur(24px);
  opacity: 0.6;
  z-index: 0;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(30px, 4vw, 40px);
}

.hero-sub {
  font-size: 16px;
  max-width: 560px;
}

.hero-media img {
  width: 100%;
  object-fit: cover;
  height: 100%;
  min-height: 260px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

main {
  margin-top: 22px;
  padding-bottom: 80px;
}

.section {
  margin: 36px 0;
}

.section-sub {
  margin: -4px 0 14px;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
  margin-top: 14px;
}

.card {
  background: var(--card);
  padding: 16px;
  border-radius: var(--radius);
  border: var(--border);
  box-shadow: var(--shadow);
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
  backdrop-filter: blur(6px);
}

.card-plain {
  box-shadow: none;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 26px 70px rgba(6, 10, 22, 0.6);
  border-color: rgba(77, 163, 255, 0.35);
}

.card-thumb {
  overflow: hidden;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.card-thumb img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.card h3 {
  font-size: 18px;
}

.card h3 a {
  color: inherit;
  text-decoration: none;
}

.card h3 a:hover {
  color: var(--accent);
}

.meta {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-weight: 700;
  margin-top: 6px;
}

.highlight {
  margin: 48px 0;
}

.cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 22px 24px;
  background: linear-gradient(135deg, rgba(95, 247, 255, 0.12), rgba(77, 163, 255, 0.2));
  color: #f3f5ff;
  border-radius: 22px;
  box-shadow: var(--shadow);
  flex-wrap: wrap;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.cta h2 {
  color: #f3f5ff;
  margin-bottom: 6px;
}

.cta p {
  color: #c6cbe0;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  border-radius: 999px;
  background: #f3f5ff;
  color: #0a0f1a;
  font-weight: 700;
  border: none;
  cursor: pointer;
  text-decoration: none;
  box-shadow: 0 12px 26px rgba(17, 24, 39, 0.14);
  transition: transform 140ms ease, box-shadow 140ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 36px rgba(17, 24, 39, 0.16);
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.pill {
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(243, 245, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #dce2ff;
  font-size: 13px;
}

.rating-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.score-card {
  border-radius: var(--radius);
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.04);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.score {
  font-size: 26px;
  font-weight: 800;
  color: var(--accent);
}

.score-label {
  color: var(--muted);
  font-size: 13px;
}

.layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 22px;
}

.sidebar {
  background: rgba(255, 255, 255, 0.04);
  border: var(--border);
  border-radius: 16px;
  padding: 16px;
  box-shadow: var(--shadow);
  position: sticky;
  top: 20px;
  align-self: start;
}

.sidebar h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-btn {
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.04);
  color: #f4f7ff;
  cursor: pointer;
  font-weight: 600;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease;
}

.filter-btn.active {
  background: rgba(77, 163, 255, 0.2);
  border-color: rgba(77, 163, 255, 0.6);
}

.filter-btn:hover {
  transform: translateY(-1px);
}

.sidebar .compare-table {
  font-size: 13px;
}

.quick-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.buy-btn {
  padding: 10px 14px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(77, 163, 255, 0.4), rgba(95, 247, 255, 0.3));
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: #0a0f1a;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 10px 24px rgba(6, 10, 22, 0.4);
  transition: transform 120ms ease, box-shadow 120ms ease;
}

.buy-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(6, 10, 22, 0.48);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  font-size: 14px;
  color: var(--fg);
}

.compare-table th,
.compare-table td {
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.02);
}

.compare-table th {
  text-align: left;
  color: #f4f7ff;
  background: rgba(77, 163, 255, 0.1);
}

.tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(77, 163, 255, 0.18);
  color: #dce2ff;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.04em;
}

footer {
  text-align: center;
  padding: 32px 0;
  color: var(--muted);
  font-size: 14px;
  border-top: var(--border);
  background: #fff;
}

.to-top {
  position: fixed;
  right: 20px;
  bottom: 24px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  box-shadow: 0 12px 30px rgba(26, 52, 200, 0.35);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.to-top.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(-3px);
}

.to-top:hover {
  background: var(--accent-strong);
}

@media (max-width: 900px) {
  .hero {
    padding: 28px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-media img {
    min-height: 220px;
  }
}

@media (max-width: 620px) {
  header {
    padding-top: 22px;
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .brand-link {
    padding: 10px 12px;
  }

  .hero {
    padding: 22px;
  }

  .card {
    padding: 14px;
  }

  .cta {
    padding: 18px;
    align-items: flex-start;
  }

  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: relative;
    top: 0;
  }
}