:root {
  --ink: #12354a;
  --muted: #466274;
  --brand: #0076b7;
  --brand-deep: #0d405e;
  --aqua: #e9f8ff;
  --paper: #fffefa;
  --line: #b9ddea;
  --sun: #ffd166;
  --coral: #f26d5b;
  --leaf: #2f8f5b;
  --shadow: 0 18px 45px rgba(13, 64, 94, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  max-width: 100%;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0;
  background:
    linear-gradient(180deg, rgba(233, 248, 255, 0.88) 0%, rgba(255, 254, 250, 0.94) 62%, rgba(233, 248, 255, 0.95) 100%),
    url("../images/background.jpg") center top / cover fixed no-repeat,
    #0099ff;
}

a {
  color: var(--brand);
  font-weight: 700;
}

a:hover {
  color: var(--brand-deep);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--sun);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 10;
  padding: 10px 14px;
  color: var(--brand-deep);
  background: var(--paper);
  border: 2px solid var(--brand);
  border-radius: 8px;
  transition: top 160ms ease;
}

.skip-link:focus {
  top: 16px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 20px 0 14px;
}

.brand {
  display: inline-flex;
  align-items: center;
}

.brand img {
  display: block;
  width: min(348px, 58vw);
  height: auto;
}

.quick-links {
  display: grid;
  gap: 6px;
  justify-items: end;
}

.quick-links a,
.quick-links img {
  display: block;
}

.quick-links img {
  width: 201px;
  max-width: 100%;
  height: auto;
}

.redeem-strip {
  width: 100%;
  padding: 13px 18px;
  text-align: center;
  background: linear-gradient(90deg, var(--brand-deep), var(--brand), var(--leaf));
  box-shadow: 0 8px 18px rgba(13, 64, 94, 0.15);
}

.redeem-strip a {
  display: inline-block;
  max-width: min(720px, 100%);
  color: #ffffff;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.redeem-strip a:hover {
  color: var(--sun);
}

.hero {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 44px 0 34px;
  text-align: center;
}

.hero-copy {
  max-width: 850px;
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--brand-deep);
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
}

h1 {
  max-width: 820px;
  margin: 0 auto;
  color: var(--brand-deep);
  font-size: 3.4rem;
  line-height: 1.04;
  font-weight: 800;
  overflow-wrap: break-word;
}

.lede {
  max-width: 720px;
  margin: 18px auto 0;
  color: var(--ink);
  font-size: 1.24rem;
  font-weight: 700;
}

.redeem-action {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px 18px;
  width: min(760px, 100%);
  margin: 28px auto 0;
  padding: 16px;
  background: rgba(255, 254, 250, 0.94);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  min-width: 0;
}

.primary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  color: #ffffff;
  text-align: center;
  text-decoration: none;
  background: linear-gradient(135deg, var(--coral), #d84d3d);
  border-radius: 8px;
  box-shadow: 0 10px 20px rgba(216, 77, 61, 0.2);
}

.primary-action:hover {
  color: #ffffff;
  background: linear-gradient(135deg, #d84d3d, #b83c30);
}

.product-visuals {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 20px;
  margin: 36px auto 0;
}

.product-visuals img {
  display: block;
  height: 320px;
  width: auto;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.kit-image {
  height: 320px;
}

.download-image {
  height: 320px;
}

.content-band {
  padding: 36px 16px 42px;
  background: rgba(255, 255, 255, 0.94);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  width: min(1120px, 100%);
  margin: 0 auto;
}

.info-block {
  min-height: 100%;
  padding: 18px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 5px solid var(--brand);
  border-radius: 8px;
}

.info-block:nth-child(2) {
  border-top-color: var(--leaf);
}

.info-block:nth-child(3) {
  border-top-color: var(--coral);
}

.info-block h2 {
  margin: 0 0 10px;
  color: var(--brand-deep);
  font-size: 1.2rem;
  line-height: 1.2;
}

.info-block p {
  margin: 0;
  color: var(--muted);
  font-weight: 600;
}

.info-block a {
  display: inline-block;
  margin-top: 12px;
}

.learn-more {
  padding: 42px 16px 52px;
  background: linear-gradient(180deg, rgba(233, 248, 255, 0.96), rgba(255, 254, 250, 0.96));
}

.learn-more-inner {
  width: min(1120px, 100%);
  margin: 0 auto;
}

.learn-more h2 {
  max-width: 760px;
  margin: 0;
  color: var(--brand-deep);
  font-size: 2rem;
  line-height: 1.15;
}

.section-intro {
  max-width: 860px;
  margin: 14px 0 24px;
  color: var(--muted);
  font-size: 1.08rem;
  font-weight: 600;
}

.detail-grid {
  column-count: 2;
  column-gap: 14px;
}

.detail-card {
  display: inline-block;
  width: 100%;
  margin: 0 0 14px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 25px rgba(13, 64, 94, 0.08);
  overflow: hidden;
}

.detail-card summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 58px;
  padding: 16px 18px;
  color: var(--brand-deep);
  font-size: 1.08rem;
  font-weight: 800;
  cursor: pointer;
  list-style: none;
}

.detail-card summary::-webkit-details-marker {
  display: none;
}

.detail-card summary::after {
  content: "+";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  color: #ffffff;
  font-size: 1.15rem;
  line-height: 1;
  background: var(--brand);
  border-radius: 50%;
}

.detail-card[open] summary::after {
  content: "-";
  background: var(--coral);
}

.detail-body {
  padding: 0 18px 18px;
  color: var(--muted);
  font-weight: 600;
}

.detail-body p {
  margin: 0 0 12px;
}

.detail-body ul {
  margin: 0 0 12px;
  padding-left: 20px;
}

.detail-body li + li {
  margin-top: 6px;
}

.detail-body a {
  display: inline-block;
  margin-top: 2px;
}

.site-footer {
  padding: 22px 16px 26px;
  color: #ffffff;
  text-align: center;
  font-size: 0.95rem;
  background: var(--brand-deep);
}

.site-footer a {
  color: #ffffff;
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--sun);
  text-decoration: underline;
}

@media (max-width: 760px) {
  .site-header {
    flex-direction: column;
    align-items: center;
    gap: 14px;
  }

  .quick-links {
    justify-items: center;
  }

  .hero {
    padding-top: 34px;
  }

  h1 {
    font-size: 2.1rem;
  }

  .lede {
    font-size: 1.08rem;
  }

  .redeem-action {
    align-items: stretch;
    flex-direction: column;
  }

  .product-visuals {
    gap: 14px;
  }

  .kit-image {
    height: 270px;
  }

  .download-image {
    height: 270px;
  }

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

  .learn-more h2 {
    font-size: 1.65rem;
  }

  .detail-grid {
    column-count: 1;
  }
}

@media (max-width: 560px) {
  .hero,
  .site-header {
    width: min(1120px, calc(100% - 24px));
  }

  .redeem-strip {
    padding: 12px;
  }

  h1 {
    font-size: 2rem;
  }

  .product-visuals {
    align-items: center;
    flex-direction: column;
    margin-top: 30px;
  }

  .kit-image {
    height: 260px;
  }

  .download-image {
    height: 260px;
  }
}

@media (max-width: 420px) {
  .quick-links {
    width: min(100%, 201px);
  }

  .primary-action {
    width: 100%;
  }
}