:root {
  --bg: #f4f7fb;
  --surface: rgba(255, 255, 255, 0.8);
  --card: #ffffff;
  --text: #122033;
  --muted: #617188;
  --line: #dbe3ef;
  --primary: #1c6cff;
  --primary-dark: #0f4fcc;
  --accent: #18b28d;
  --warning: #fff6df;
  --shadow: 0 16px 40px rgba(18, 32, 51, 0.08);
  --radius: 24px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(28, 108, 255, 0.12), transparent 28%),
    linear-gradient(180deg, #f9fbff 0%, var(--bg) 100%);
}

.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(249, 251, 255, 0.75);
  border-bottom: 1px solid rgba(219, 227, 239, 0.7);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
}

.brand {
  display: inline-flex;
  align-items: center;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.brand-logo {
  width: 46px;
  height: 46px;
  object-fit: contain;
  display: block;
  border-radius: 12px;
}

.brand-logo-footer {
  width: 54px;
  height: 54px;
}

.nav nav {
  display: flex;
  gap: 22px;
}

.nav a,
.site-footer a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
}

.hero {
  padding: 72px 0 40px;
}

.hero-grid,
.split-grid,
.buy-box,
.footer-grid {
  display: grid;
  gap: 32px;
}

.hero-grid {
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 0.83rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(2.6rem, 4.5vw, 4.5rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
  max-width: 10ch;
}

h2 {
  font-size: clamp(1.85rem, 3vw, 3rem);
  line-height: 1.04;
  letter-spacing: -0.04em;
}

.lede,
.section-heading p,
.feature-card p,
.quote-card,
.offer-list,
.fine-print,
.faq-list p,
.site-footer p,
.note {
  color: var(--muted);
  line-height: 1.7;
}

.hero-points,
.cta-row,
.trust-items,
.compatibility-box {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-points {
  margin: 24px 0;
}

.hero-points span,
.chip {
  padding: 11px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  font-size: 0.95rem;
  box-shadow: var(--shadow);
}

.cta-row {
  margin-bottom: 18px;
}

.btn {
  border: 0;
  border-radius: 999px;
  padding: 15px 22px;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: 0.2s ease;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #4d8dff 100%);
  color: white;
  box-shadow: 0 16px 30px rgba(28, 108, 255, 0.25);
}

.btn-secondary {
  background: white;
  color: var(--text);
  border: 1px solid var(--line);
}

.full {
  width: 100%;
}

.promo-strip {
  margin: 0 0 18px;
  padding: 18px 20px;
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(255,255,255,0.96) 0%, rgba(245,250,255,0.96) 100%);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.promo-label {
  display: inline-block;
  margin-bottom: 10px;
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(24, 178, 141, 0.12);
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.promo-price-row,
.price-stack {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.price-was {
  color: var(--muted);
  text-decoration: line-through;
  font-weight: 700;
}

.price-was.large {
  font-size: 1.15rem;
}

.price-now {
  color: var(--primary-dark);
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.promo-note,
.micro-proof {
  font-size: 0.96rem;
  color: var(--muted);
}

.hero-visual {
  display: grid;
  gap: 18px;
}

.product-card,
.feature-card,
.quote-card,
.purchase-panel,
.compatibility-box,
.spec-grid,
.faq-list details {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(219, 227, 239, 0.9);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.main-card {
  padding: 24px;
}

.badge {
  display: inline-block;
  margin-bottom: 12px;
  padding: 8px 10px;
  border-radius: 999px;
  background: #eaf1ff;
  color: var(--primary-dark);
  font-size: 0.82rem;
  font-weight: 700;
}

.brush-cluster {
  min-height: 280px;
  display: flex;
  align-items: end;
  justify-content: center;
  gap: 20px;
  margin: 14px 0 10px;
}

.brush {
  width: 68px;
  height: 220px;
  border-radius: 999px;
  position: relative;
  background: linear-gradient(180deg, #d6e4ff 0%, #ffffff 82%);
  border: 1px solid #dbe3ef;
}

.brush::before {
  content: '';
  position: absolute;
  top: -16px;
  left: 10px;
  width: 48px;
  height: 42px;
  border-radius: 20px 20px 8px 8px;
  background: linear-gradient(180deg, #ffffff 0%, #eef4ff 100%);
  border: 1px solid #dbe3ef;
}

.brush-blue::after,
.brush-green::after {
  content: '';
  position: absolute;
  top: -8px;
  left: 16px;
  width: 36px;
  height: 16px;
  border-radius: 12px 12px 4px 4px;
}

.brush-blue::after {
  background: linear-gradient(90deg, #3387ff 0%, #89b8ff 100%);
}

.brush-green::after {
  background: linear-gradient(90deg, #21b27d 0%, #88e0bf 100%);
}

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

.mini-card {
  padding: 18px;
  min-height: 110px;
  display: flex;
  align-items: end;
  font-weight: 600;
}

.product-image-card {
  overflow: hidden;
}

.hero-product-image {
  width: 100%;
  max-height: 420px;
  object-fit: contain;
  display: block;
  margin: 8px auto 16px;
}

.mini-image-card {
  padding: 8px;
  overflow: hidden;
}

.mini-feature-image,
.compatibility-image {
  width: 100%;
  display: block;
  border-radius: 18px;
  object-fit: cover;
}

.compatibility-media-box {
  padding: 14px;
}

.trust-bar {
  padding: 8px 0 10px;
}

.trust-items {
  justify-content: space-between;
  gap: 16px;
  padding: 18px 24px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.66);
  border: 1px solid var(--line);
}

.section {
  padding: 80px 0;
}

.alt-section {
  background: rgba(255, 255, 255, 0.35);
}

.section-heading {
  max-width: 780px;
  margin-bottom: 28px;
}

.feature-grid,
.spec-grid {
  display: grid;
  gap: 18px;
}

.feature-grid {
  grid-template-columns: repeat(4, 1fr);
}

.feature-card {
  padding: 24px;
}

.split-grid,
.buy-box {
  grid-template-columns: 1fr 360px;
  align-items: start;
}

.check-list,
.offer-list {
  padding-left: 20px;
}

.check-list li,
.offer-list li {
  margin-bottom: 12px;
}

.quote-card {
  padding: 28px;
  font-size: 1.1rem;
}

.compatibility-box {
  padding: 22px;
}

.note {
  margin-top: 18px;
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid #f0df9a;
  background: var(--warning);
}

.buy-section {
  padding-top: 30px;
}

.purchase-panel {
  padding: 24px;
}

.price-block {
  margin-bottom: 20px;
}

.cart-summary {
  margin: 18px 0;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255,255,255,0.85);
}

.cart-summary-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 8px 0;
  color: var(--muted);
}

.cart-summary-row strong {
  color: var(--text);
}

.checkout-actions,
.payment-buttons {
  display: grid;
  gap: 12px;
  margin: 18px 0;
}

.payment-readiness,
.payment-status,
.payment-steps {
  margin: 16px 0;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255,255,255,0.85);
}

.payment-readiness p,
.payment-status p,
.payment-steps li {
  color: var(--muted);
}

.payment-status {
  font-weight: 600;
}

.payment-status[data-state='error'] {
  border-color: #efb1b4;
  background: #fff5f5;
  color: #a63b43;
}

.payment-status[data-state='success'] {
  border-color: #a8decf;
  background: #f2fffa;
  color: #11765b;
}

.payment-status[data-state='info'] {
  color: var(--text);
}

.payment-mode {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary-dark);
}

.checkout-form {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.checkout-form h3 {
  margin-bottom: 14px;
  font-size: 1.05rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-grid label {
  display: grid;
  gap: 8px;
  font-size: 0.92rem;
  color: var(--muted);
}

.form-grid input {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  font: inherit;
  color: var(--text);
  background: #fff;
}

.btn-paypal {
  background: #ffc439;
  color: #111827;
  box-shadow: 0 12px 24px rgba(255, 196, 57, 0.24);
}

.btn-ebay {
  border-color: #e53238;
  color: #e53238;
}

.price-label,
.subprice {
  color: var(--muted);
}

.price {
  margin: 6px 0;
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.06em;
}

.spec-grid {
  grid-template-columns: repeat(2, 1fr);
  padding: 20px;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 8px;
  border-bottom: 1px solid var(--line);
}

.spec-row:nth-last-child(-n + 2) {
  border-bottom: none;
}

.spec-row span {
  color: var(--muted);
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-list details {
  padding: 18px 20px;
}

.faq-list summary {
  font-weight: 700;
  cursor: pointer;
}

.site-footer {
  padding: 28px 0 44px;
}

.footer-grid {
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line);
  padding-top: 22px;
}

.review-hero {
  padding-bottom: 28px;
}

.review-summary-card {
  padding: 28px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(219, 227, 239, 0.9);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.star-row {
  display: flex;
  gap: 6px;
  margin-bottom: 14px;
  color: #f5b301;
  font-size: 1.25rem;
  letter-spacing: 0.04em;
}

.review-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.review-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.metric-card,
.review-card {
  padding: 24px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(219, 227, 239, 0.9);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.metric-label {
  color: var(--muted);
  font-size: 0.83rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metric-value {
  margin: 8px 0 12px;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.05em;
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.featured-review {
  grid-column: span 2;
}

.review-card h3 {
  margin-bottom: 10px;
  font-size: 1.25rem;
  letter-spacing: -0.03em;
}

.review-card p,
.metric-card p,
.review-footer {
  color: var(--muted);
  line-height: 1.7;
}

.review-footer {
  margin-top: 14px;
  font-size: 0.92rem;
  font-weight: 600;
}

.feature-media-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.feature-media-card {
  margin: 0;
  padding: 14px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(219, 227, 239, 0.9);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.feature-media-card img {
  width: 100%;
  display: block;
  border-radius: 18px;
  margin-bottom: 12px;
}

.feature-media-card figcaption {
  color: var(--muted);
  line-height: 1.6;
  font-size: 0.95rem;
}

@media (max-width: 980px) {
  .hero-grid,
  .split-grid,
  .buy-box,
  .footer-grid,
  .feature-grid,
  .spec-grid,
  .review-metrics,
  .review-grid,
  .feature-media-grid,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .featured-review {
    grid-column: span 1;
  }

  h1 {
    max-width: none;
  }
}

@media (max-width: 720px) {
  .nav {
    flex-direction: column;
    justify-content: center;
    gap: 10px;
    padding: 12px 0;
  }

  .nav nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
  }

  .hero {
    padding-top: 42px;
  }

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

  .trust-items {
    flex-direction: column;
  }
}