:root {
  --bg: #e9f5ff;
  --bg-soft: #f5fbff;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: rgba(255, 255, 255, 0.96);
  --ink: #10233c;
  --text: #10233c;
  --muted: #5f7692;
  --line: rgba(42, 99, 160, 0.14);
  --brand: #2f9df4;
  --brand-dark: #1b7fd0;
  --accent: #ff9a3d;
  --accent-dark: #ff7b36;
  --accent-soft: rgba(47, 157, 244, 0.12);
  --max-width: 1180px;
  --shadow: 0 24px 60px rgba(27, 87, 140, 0.14);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --font-body: Arial, "Helvetica Neue", Helvetica, sans-serif;
  --font-display: "Arial Narrow", Arial, "Helvetica Neue", Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(circle at 12% 10%, rgba(47, 157, 244, 0.18), transparent 26%),
    radial-gradient(circle at 84% 16%, rgba(255, 154, 61, 0.14), transparent 22%),
    radial-gradient(circle at 50% 100%, rgba(180, 220, 255, 0.48), transparent 40%),
    linear-gradient(180deg, #f5fbff 0%, #edf7ff 48%, #e7f1fb 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(16, 35, 60, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 35, 60, 0.03) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.18), transparent 88%);
}

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

img {
  max-width: 100%;
}

.announcement {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 18px;
  min-height: 36px;
  padding: 8px 18px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  font-size: 0.88rem;
  font-weight: 700;
  text-align: center;
}

.announcement span {
  color: rgba(255, 255, 255, 0.78);
  font-weight: 500;
}

.announcement-dark {
  background: linear-gradient(135deg, #ffb45d, var(--accent-dark));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px max(24px, calc((100vw - var(--max-width)) / 2));
  margin-top: 10px;
  background: rgba(255, 255, 255, 0.72);
  border-bottom: 1px solid var(--line);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: 0 10px 30px rgba(51, 114, 171, 0.1);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: #ffffff;
  background:
    radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.32), transparent 38%),
    linear-gradient(135deg, #4db5ff, #1575d1 58%, #ff9f43 100%);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 700;
}

.nav a {
  padding: 10px 12px;
  border-radius: 999px;
  transition: color 160ms ease, background 160ms ease;
}

.nav a:hover {
  color: var(--brand);
  background: var(--accent-soft);
}

.nav-buy {
  color: #ffffff !important;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
}

.nav-buy:hover {
  background: var(--accent-dark) !important;
}

main,
.footer {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
}

.hero {
  position: relative;
  display: grid;
  min-height: 620px;
  grid-template-columns: 1fr;
  align-items: end;
  overflow: hidden;
  margin-top: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 32px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(16, 35, 60, 0.74) 0%, rgba(16, 35, 60, 0.42) 46%, rgba(16, 35, 60, 0.08) 100%),
    linear-gradient(0deg, rgba(47, 157, 244, 0.12), transparent 45%);
}

.hero-media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 660px;
  padding: clamp(34px, 7vw, 78px);
  color: #ffffff;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--brand);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  font-weight: 800;
}

.hero .eyebrow {
  color: #8ad2ff;
}

.hero h1,
.product-intro h2,
.section-heading h2,
.purchase-copy h2 {
  margin: 0;
  font-family: var(--font-display);
  line-height: 1.04;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 6.7rem);
  letter-spacing: 0;
}

.hero-subtitle {
  margin: 10px 0 14px;
  font-size: clamp(1.3rem, 2.6vw, 2rem);
  font-weight: 800;
  line-height: 1.2;
}

.hero-copy p {
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.7;
}

.hero-actions,
.product-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 800;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease;
}

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

.button-primary,
.button-small {
  color: #ffffff;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  box-shadow: 0 14px 28px rgba(255, 123, 54, 0.22);
}

.button-primary:hover,
.button-small:hover {
  background: var(--accent-dark);
}

.button-secondary {
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.08);
}

.button-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.button-small {
  min-height: 42px;
  padding-inline: 18px;
}

.text-link,
.manual-order-link {
  color: var(--brand);
  font-weight: 800;
}

.product-intro,
.purchase-section {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 42px;
  align-items: start;
  padding: 76px 0 34px;
}

.product-intro h2,
.section-heading h2,
.purchase-copy h2 {
  font-size: clamp(2rem, 4vw, 3.25rem);
}

.product-intro p,
.product-feature p,
.mini-grid p,
.feature-grid p,
.purchase-copy p,
.order-notes,
.faq-list p,
.footer p {
  color: var(--muted);
  line-height: 1.7;
}

.product-showcase,
.expertise,
.compare,
.faq {
  padding-top: 52px;
}

.product-feature {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 46px;
  align-items: center;
  padding: 32px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.product-feature img {
  display: block;
  width: 100%;
  max-height: 420px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 22px;
  border: 1px solid rgba(16, 35, 60, 0.08);
}

.product-feature h3 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.2vw, 3rem);
  line-height: 1.08;
}

.check-list,
.order-notes {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 20px 0 0;
  list-style: none;
}

.check-list li,
.order-notes li {
  position: relative;
  padding-left: 24px;
}

.check-list li::before,
.order-notes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 9px;
  height: 9px;
  background: var(--accent);
  border-radius: 50%;
}

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

.mini-grid article,
.feature-grid article,
.purchase-card,
.faq-list details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.mini-grid article {
  padding: 18px;
}

.mini-grid img {
  display: block;
  width: 100%;
  max-height: 220px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 16px;
}

.mini-grid h3,
.feature-grid h3 {
  margin: 18px 0 8px;
  font-family: var(--font-display);
  font-size: 1.25rem;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 24px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.feature-grid article {
  min-height: 260px;
  padding: 24px;
}

.feature-grid span {
  color: var(--accent);
  font-family: var(--font-display);
  font-weight: 700;
}

.compare-table {
  overflow: hidden;
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.compare-row {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 18px;
  align-items: center;
  min-height: 58px;
  padding: 16px 22px;
  border-bottom: 1px solid var(--line);
}

.compare-row:last-child {
  border-bottom: 0;
}

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

.compare-head {
  color: #ffffff;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
}

.compare-head span {
  color: rgba(255, 255, 255, 0.78);
}

.purchase-section {
  align-items: center;
  padding-top: 86px;
}

.purchase-card {
  padding: 28px;
  background:
    radial-gradient(circle at top left, rgba(255, 159, 67, 0.12), transparent 24%),
    radial-gradient(circle at bottom right, rgba(77, 181, 255, 0.12), transparent 28%),
    var(--surface-strong);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 0 0 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.total-row {
  font-size: 1.12rem;
}

.paypal-slot {
  min-height: 58px;
}

.checkout-status {
  color: var(--muted);
  font-size: 0.9rem;
}

.faq-list {
  display: grid;
  gap: 12px;
}

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

.faq-list summary {
  cursor: pointer;
  color: var(--text);
  font-weight: 800;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 58px 0 28px;
  margin-top: 64px;
  border-top: 1px solid var(--line);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 16px;
  color: var(--muted);
  font-weight: 700;
}

.footer-links a:hover {
  color: var(--brand);
}

.keyword-shell {
  width: min(calc(100% - 32px), 1100px);
  margin: 0 auto;
  padding: 24px 0 56px;
}

.keyword-main {
  display: grid;
  gap: 24px;
  padding-top: 44px;
}

.keyword-hero,
.keyword-grid,
.keyword-hub-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.keyword-card,
.keyword-section,
.keyword-faq-item,
.keyword-related,
.keyword-table,
.keyword-hub-item {
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: 0 10px 30px rgba(31, 58, 88, 0.08);
}

.keyword-kicker {
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--brand);
  font-size: 0.78rem;
  font-weight: 800;
}

.keyword-title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4.6vw, 4rem);
  line-height: 1.02;
}

.keyword-lead,
.keyword-section p,
.keyword-faq-item p,
.keyword-related p,
.keyword-table p,
.keyword-meta,
.keyword-hub-item p {
  color: var(--muted);
  line-height: 1.7;
}

.keyword-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

.keyword-product {
  display: grid;
  gap: 14px;
}

.keyword-product img {
  display: block;
  width: 100%;
}

.keyword-list,
.keyword-faq-list,
.keyword-related-list {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
  display: grid;
  gap: 12px;
}

.keyword-list li,
.keyword-related-list li {
  position: relative;
  padding-left: 24px;
}

.keyword-list li::before,
.keyword-related-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
}

.keyword-section h2,
.keyword-related h2,
.keyword-table h2 {
  margin-top: 0;
  font-family: var(--font-display);
}

.keyword-related-list a,
.keyword-hub-item a,
.keyword-table a {
  color: var(--brand);
  font-weight: 800;
}

.keyword-table-grid {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.keyword-table-row {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.keyword-table-row:last-child {
  border-bottom: 0;
}

@media (max-width: 980px) {
  .site-header,
  .footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    flex-wrap: wrap;
  }

  .product-intro,
  .product-feature,
  .purchase-section,
  .keyword-hero,
  .keyword-grid,
  .keyword-hub-list {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .mini-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero {
    min-height: 560px;
  }

}

@media (max-width: 640px) {
  .announcement {
    flex-direction: column;
    gap: 2px;
  }

  main,
  .footer,
  .keyword-shell {
    width: min(calc(100% - 20px), var(--max-width));
  }

  .site-header {
    padding-inline: 10px;
  }

  .nav a {
    padding: 8px 9px;
  }

  .hero {
    min-height: 620px;
    margin-top: 10px;
  }

  .hero-media img {
    object-position: 58% center;
  }

  .hero-media::after {
    background: linear-gradient(0deg, rgba(15, 33, 52, 0.86) 0%, rgba(15, 33, 52, 0.46) 62%, rgba(15, 33, 52, 0.08) 100%);
  }

  .hero-copy {
    padding: 28px 20px;
  }

  .button,
  .hero-actions {
    width: 100%;
  }

  .feature-grid,
  .mini-grid,
  .compare-row,
  .keyword-table-row {
    grid-template-columns: 1fr;
  }

  .mini-grid img {
    max-height: 240px;
  }

  .product-feature {
    padding: 18px;
  }

  .product-feature img {
    max-height: 320px;
  }

  .footer-links {
    justify-content: flex-start;
  }
}