:root {
  --navy: #063756;
  --blue: #067eac;
  --sky: #11b5e8;
  --soft-blue: #d9ecff;
  --pale: #f3f8ff;
  --yellow: #ffcc18;
  --orange: #ff8b18;
  --red: #f04a37;
  --text: #1f3b52;
  --muted: #607993;
  --white: #ffffff;
  --shadow: 0 24px 60px rgba(8, 48, 83, 0.16);
  --radius: 34px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 70% 16%, rgba(255, 204, 24, .16), transparent 18%),
    radial-gradient(circle at 66% 40%, rgba(17, 181, 232, .18), transparent 30%),
    linear-gradient(180deg, #f7fbff 0%, #eef6ff 100%);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, textarea, select { font-family: inherit; }

.site-header {
  min-height: 86px;
  padding: 0 5vw;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.5rem;
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 20;
  box-shadow: 0 1px 0 rgba(6, 55, 86, .07);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  font-size: clamp(1.2rem, 2vw, 1.75rem);
  font-weight: 900;
  color: var(--navy);
  letter-spacing: -0.04em;
  white-space: nowrap;
}
.brand img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}
.main-nav {
  justify-self: center;
  display: flex;
  gap: clamp(1rem, 3vw, 2.4rem);
  color: #53667a;
  font-weight: 700;
}
.main-nav a:hover { color: var(--blue); }
.header-cta {
  justify-self: end;
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 1.25rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #057ea8, #12bdf0);
  color: white;
  font-weight: 900;
  box-shadow: 0 12px 22px rgba(5, 126, 168, .22);
}
.header-cta:hover { transform: translateY(-1px); }

.hero, .product-hero, .catalog-hero {
  width: min(1440px, 92vw);
  margin: 56px auto 0;
  display: grid;
  grid-template-columns: 1fr 1.12fr;
  gap: clamp(2rem, 5vw, 6rem);
  align-items: center;
  min-height: 630px;
}
.hero-content, .product-copy, .catalog-hero-copy { max-width: 650px; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: .75rem 1.1rem;
  background: var(--yellow);
  color: #5a4a00;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-weight: 900;
  font-size: .82rem;
}
h1 {
  margin: 1.8rem 0 1.2rem;
  color: var(--navy);
  font-size: clamp(3rem, 6vw, 5.6rem);
  line-height: .95;
  letter-spacing: -0.075em;
  font-weight: 900;
}
h2 {
  margin: .75rem 0 1rem;
  color: var(--navy);
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1.02;
  letter-spacing: -0.055em;
}
h3 { color: var(--navy); font-size: 1.6rem; margin: .8rem 0 .55rem; }
p { color: var(--muted); font-size: 1.08rem; line-height: 1.75; }
.hero-content p, .product-copy p, .catalog-hero-copy p { font-size: clamp(1.1rem, 1.7vw, 1.45rem); }

.hero-actions { margin-top: 2.4rem; display: flex; gap: 1rem; flex-wrap: wrap; }
.btn {
  border: 0;
  cursor: pointer;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 64px;
  padding: 0 2rem;
  border-radius: 999px;
  font-weight: 900;
  font-size: 1rem;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: linear-gradient(135deg, #057ea8, #12bdf0); color: white; box-shadow: 0 14px 24px rgba(5, 126, 168, .28); }
.btn-secondary { background: #cfe8ff; color: #344e68; }

.hero-image-card, .product-image-card, .catalog-hero-card {
  position: relative;
  border-radius: var(--radius);
  overflow: visible;
  filter: drop-shadow(var(--shadow));
}
.hero-image-card img, .product-image-card img, .catalog-hero-card img { border-radius: var(--radius); width: 100%; }
.rating-card {
  position: absolute;
  right: -2.8rem;
  bottom: -2.2rem;
  display: flex;
  gap: 1rem;
  align-items: center;
  padding: 1.25rem 1.6rem;
  border-radius: 28px;
  background: white;
  box-shadow: 0 18px 44px rgba(8, 48, 83, .18);
}
.star {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--yellow);
  color: var(--navy);
  font-size: 1.5rem;
}
.rating-card strong { color: var(--navy); display: block; font-size: 1.05rem; }
.rating-card small { color: var(--muted); }

.section { width: min(1180px, 92vw); margin: 80px auto; scroll-margin-top: 110px; }
.section-heading { text-align: center; max-width: 760px; margin: 0 auto 2.4rem; }
.section-heading.compact { max-width: 760px; }
.category-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.6rem;
}
.category-card {
  display: grid;
  grid-template-columns: 44% 1fr;
  gap: 1.4rem;
  padding: 1.2rem;
  align-items: center;
  border-radius: 30px;
  background: rgba(255, 255, 255, .78);
  box-shadow: 0 16px 45px rgba(8, 48, 83, .1);
}
.category-card img { border-radius: 24px; }
.card-badge {
  color: var(--blue);
  font-weight: 900;
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .1em;
}
.text-link { color: var(--blue); font-weight: 900; }
.text-link:hover { text-decoration: underline; }
.feature-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.feature-strip div {
  padding: 1.6rem;
  border-radius: 26px;
  background: white;
  box-shadow: 0 12px 32px rgba(8, 48, 83, .08);
}
.feature-strip strong { display: block; color: var(--navy); margin-bottom: .4rem; }
.feature-strip span { color: var(--muted); line-height: 1.55; }

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.2rem;
}
.product-tile {
  display: block;
  border: 1px solid rgba(6, 55, 86, .08);
  border-radius: 26px;
  background: rgba(255, 255, 255, .88);
  padding: 1rem;
  cursor: pointer;
  box-shadow: 0 12px 34px rgba(8, 48, 83, .09);
  text-align: left;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.product-tile:hover, .product-tile.is-active {
  transform: translateY(-4px);
  box-shadow: 0 18px 46px rgba(8, 48, 83, .15);
  border-color: rgba(17, 181, 232, .55);
}
.product-tile img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 20px;
  background: #e9f5ff;
}
.product-tile span {
  display: block;
  margin-top: .9rem;
  color: var(--navy);
  font-size: 1.05rem;
  font-weight: 900;
  line-height: 1.25;
}
.tile-cta {
  display: inline-block;
  margin-top: .55rem;
  color: var(--blue);
  font-weight: 900;
  font-size: .9rem;
}

.detail-section {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: center;
  padding: clamp(1.25rem, 4vw, 3rem);
  border-radius: 34px;
  background: rgba(255, 255, 255, .82);
  box-shadow: 0 20px 54px rgba(8, 48, 83, .12);
}
.detail-copy p { font-size: 1.08rem; }
.detail-image-card {
  order: 2;
  border-radius: 30px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.detail-image-card img {
  width: 100%;
  min-height: 360px;
  object-fit: cover;
}

.product-hero { min-height: 560px; }
.feature-list {
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .8rem;
}
.feature-list li {
  position: relative;
  padding-left: 2rem;
  color: var(--text);
  font-weight: 700;
}
.feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: -.1rem;
  color: var(--blue);
  font-weight: 900;
}

.form-section { margin-top: 20px; }
.offer-form {
  background: rgba(255, 255, 255, .92);
  border: 1px solid rgba(6, 55, 86, .08);
  border-radius: 34px;
  padding: clamp(1.3rem, 4vw, 3rem);
  box-shadow: 0 20px 50px rgba(8, 48, 83, .12);
}
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.field {
  display: block;
  margin-bottom: 1rem;
  color: var(--navy);
  font-weight: 900;
}
.label-text {
  display: inline-flex;
  align-items: baseline;
  gap: .25rem;
  margin-bottom: .5rem;
}
.required-star { color: #d23a2e; font-weight: 900; }
input, textarea, select {
  width: 100%;
  border: 1px solid #c8d9e9;
  background: #f9fcff;
  color: var(--text);
  border-radius: 18px;
  padding: 1rem 1.05rem;
  font: inherit;
  outline: none;
  transition: border .18s ease, box-shadow .18s ease, background .18s ease;
}
select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--blue) 50%), linear-gradient(135deg, var(--blue) 50%, transparent 50%);
  background-position: calc(100% - 22px) 50%, calc(100% - 16px) 50%;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}
textarea { resize: vertical; }
input:focus, textarea:focus, select:focus {
  border-color: var(--sky);
  background-color: white;
  box-shadow: 0 0 0 4px rgba(17, 181, 232, .14);
}
input:invalid:not(:placeholder-shown), textarea:invalid:not(:placeholder-shown), select:invalid { border-color: #e46c61; }
.hidden-field { position: absolute; left: -9999px; opacity: 0; }
.form-actions { display: flex; align-items: center; gap: 1.2rem; flex-wrap: wrap; margin-top: 1rem; }
.form-note { margin: 0; font-size: .95rem; }
.product-select-field {
  max-width: 520px;
  margin-bottom: 1.4rem;
}

.page-content {
  min-height: 55vh;
  background: white;
  border-radius: 30px;
  padding: clamp(2rem, 4vw, 4rem);
  box-shadow: var(--shadow);
}
.page-content h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); }

.site-footer {
  width: min(1180px, 92vw);
  margin: 80px auto 36px;
  padding: 2rem 0 0;
  border-top: 1px solid rgba(6, 55, 86, .13);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
}
.site-footer strong, .site-footer a { color: var(--navy); }
.site-footer p { margin: .4rem 0 0; font-size: .95rem; }

@media (max-width: 1100px) {
  .product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 980px) {
  .hero, .product-hero, .catalog-hero, .detail-section { grid-template-columns: 1fr; min-height: unset; }
  .hero-image-card, .catalog-hero-card { order: -1; }
  .detail-image-card { order: -1; }
  .rating-card { right: 1rem; bottom: -1.2rem; }
  .category-grid, .feature-strip { grid-template-columns: 1fr; }
  .site-header { grid-template-columns: 1fr; justify-items: center; padding-top: 1rem; padding-bottom: 1rem; }
  .brand, .header-cta { justify-self: center; }
}

@media (max-width: 740px) {
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .form-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .main-nav { width: 100%; justify-content: center; overflow-x: auto; }
  .hero, .product-hero, .catalog-hero { margin-top: 32px; }
  .category-card { grid-template-columns: 1fr; }
  .rating-card { position: static; margin: -1rem auto 0; width: calc(100% - 2rem); }
  .site-footer { flex-direction: column; }
}

@media (max-width: 460px) {
  .product-grid { grid-template-columns: 1fr; }
  .header-cta { width: 100%; }
  .brand span { font-size: 1.25rem; }
}


.content-card {
  background: rgba(255, 255, 255, .9);
  border: 1px solid rgba(6, 55, 86, .08);
  border-radius: 30px;
  padding: clamp(1.4rem, 3vw, 2.2rem);
  box-shadow: 0 16px 42px rgba(8, 48, 83, .09);
}

.product-info-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 1.4rem;
  align-items: start;
}

.product-description-card p {
  font-size: 1.08rem;
  line-height: 1.8;
}

.spec-card h2,
.content-card h2 {
  font-size: clamp(1.55rem, 2.5vw, 2.2rem);
}

.spec-list {
  display: grid;
  gap: .8rem;
  margin: 0;
}

.spec-list div {
  display: grid;
  gap: .25rem;
  padding: .9rem 0;
  border-bottom: 1px solid rgba(6, 55, 86, .08);
}

.spec-list div:last-child { border-bottom: 0; }

.spec-list dt {
  color: var(--blue);
  font-weight: 900;
  font-size: .82rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.spec-list dd {
  margin: 0;
  color: var(--text);
  line-height: 1.6;
}

.detail-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}

.faq-list {
  display: grid;
  gap: .9rem;
}

.faq-item {
  background: rgba(255, 255, 255, .94);
  border: 1px solid rgba(6, 55, 86, .08);
  border-radius: 22px;
  box-shadow: 0 12px 30px rgba(8, 48, 83, .07);
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 1.2rem 1.4rem;
  color: var(--navy);
  font-weight: 900;
  position: relative;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 1.4rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--blue);
  font-size: 1.4rem;
  font-weight: 900;
}

.faq-item[open] summary::after { content: "–"; }

.faq-item p {
  margin: 0;
  padding: 0 1.4rem 1.25rem;
  font-size: 1rem;
}

.standalone-faq-list {
  margin-top: 2rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: flex-end;
}

.footer-links a {
  font-weight: 800;
}

.product-image-card img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: #e9f5ff;
}

@media (max-width: 980px) {
  .product-info-grid,
  .detail-card-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .footer-links {
    justify-content: flex-start;
  }
}