:root {
  --ink: #17242b;
  --muted: #5c6b73;
  --brand: #176B87;
  --brand-dark: #0D465C;
  --bg: #ffffff;
  --alt: #EFF7FA;
  --line: #D9E3E7;
  --danger: #b3261e;
  --radius: 12px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

.container {
  width: min(1100px, 100% - 32px);
  margin-inline: auto;
}

.narrow {
  width: min(720px, 100% - 32px);
}

.center {
  text-align: center;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
}

.brand {
  font-weight: 700;
  color: var(--brand);
  text-decoration: none;
  font-size: 1.1rem;
}

.btn {
  display: inline-block;
  border: 0;
  cursor: pointer;
  text-decoration: none;
  background: var(--brand);
  color: #fff;
  font: inherit;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 999px;
  transition: background .15s;
}

.btn:hover {
  background: var(--brand-dark);
}

.btn-small {
  padding: 8px 18px;
  font-size: .9rem;
}

.btn-block {
  width: 100%;
  margin-top: 8px;
}

.btn-light {
  background: #fff;
  color: var(--brand);
}

.btn-light:hover {
  background: var(--alt);
}

.hero {
  background: linear-gradient(180deg, var(--alt), #fff);
  padding: 56px 0;
}

.hero-inner {
  display: grid;
  gap: 40px;
  grid-template-columns: 1.1fr .9fr;
  align-items: start;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: .1em;
  font-size: .8rem;
  color: var(--brand);
  font-weight: 700;
  margin: 0 0 8px;
}

h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  line-height: 1.15;
  margin: 0 0 16px;
}

h2 {
  font-size: 1.75rem;
  margin: 0 0 16px;
}

.lead {
  font-size: 1.15rem;
  color: var(--muted);
}

.checks {
  list-style: none;
  padding: 0;
  margin: 20px 0 28px;
}

.checks li {
  padding-left: 28px;
  position: relative;
  margin-bottom: 6px;
}

.checks li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--brand);
  font-weight: 700;
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 8px 24px rgba(23, 36, 43, .08);
}

.form h2 {
  font-size: 1.4rem;
  margin-bottom: 4px;
  scroll-margin-top: 100px;
}

.muted {
  color: var(--muted);
  margin-top: 0;
}

.form label {
  display: block;
  font-weight: 600;
  font-size: .9rem;
  margin: 14px 0 4px;
}

.optional {
  font-weight: 400;
  color: var(--muted);
}

.form input[type="text"],
.form input[type="email"],
.form input[type="tel"],
.form input[type="number"],
.form select {
  width: 100%;
  padding: 11px 12px;
  font: inherit;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.form input:focus,
.form select:focus {
  outline: 2px solid var(--brand);
  outline-offset: 1px;
}

.form .invalid {
  border-color: var(--danger);
}

.form label.check {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-weight: 400;
  margin-top: 18px;
}

.check input {
  margin-top: 5px;
}

.error {
  color: var(--danger);
  font-size: .9rem;
  margin: 12px 0 0;
}

.fineprint {
  font-size: .8rem;
  color: var(--muted);
}

.section {
  padding: 64px 0;
}

.section.alt {
  background: var(--alt);
}

.steps {
  list-style: none;
  counter-reset: s;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 0;
  margin: 32px 0 0;
}

.steps li {
  counter-increment: s;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}

.steps li::before {
  content: counter(s);
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  font-weight: 700;
  margin-bottom: 10px;
}

.steps strong,
.steps span {
  display: block;
}

.steps span {
  color: var(--muted);
  font-size: .95rem;
}

details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
  margin-top: 12px;
}

summary {
  cursor: pointer;
  font-weight: 600;
}

details p {
  margin: 10px 0 0;
  color: var(--muted);
}

.cta {
  background: var(--brand);
  color: #fff;
  padding: 56px 0;
}

.cta h2 {
  margin-bottom: 20px;
}

.site-footer {
  padding: 32px 0;
  background: #0f1a1f;
  color: #c5d0d4;
  font-size: .9rem;
}

.site-footer p {
  margin: 0 0 8px;
}

.site-footer .fineprint {
  color: #8fa0a6;
}


/* --- Visual refresh --- */

:root {
  --brand: #176B87;
  --brand-dark: #0D465C;
  --alt: #EFF7FA;
}

.btn {
  box-shadow: 0 6px 16px rgba(23, 107, 135, .3);
}

.btn-light {
  box-shadow: none;
}

.hero {
  padding: 72px 0 56px;
  overflow: hidden;
}

.hero-inner {
  grid-template-columns: 1.05fr .95fr;
  align-items: center;
}

.hero-media {
  position: relative;
  display: grid;
  place-items: center;
}

.hero-glow {
  position: absolute;
  width: 88%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(
    circle at 35% 30%,
    #B8DDE9,
    #E5F2F7 60%,
    transparent 72%
  );
}

.hero-media img {
  position: relative;
  width: min(340px, 78%);
  height: auto;
  mix-blend-mode: multiply;
  filter: drop-shadow(
    0 24px 24px rgba(13, 70, 92, .18)
  );
}

.badge {
  position: absolute;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: .85rem;
  font-weight: 600;
  box-shadow: 0 6px 18px rgba(23, 36, 43, .1);
}

.badge::before {
  content: "●";
  color: var(--brand);
  margin-right: 6px;
}

.badge-a {
  top: 14%;
  left: 2%;
}

.badge-b {
  bottom: 14%;
  right: 2%;
}

.trust {
  background: var(--ink);
  color: #fff;
}

.trust-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 22px 0;
  text-align: center;
}

.trust strong {
  display: block;
  font-size: 1.4rem;
  color: #72BCD3;
}

.trust span {
  font-size: .85rem;
  color: #c5d0d4;
}

.about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-img {
  background: linear-gradient(160deg, #E5F2F7, #fff);
  border-radius: 24px;
  padding: 24px;
  text-align: center;
}

.about-img img {
  width: min(300px, 100%);
  height: auto;
  mix-blend-mode: multiply;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.feature {
  background: var(--alt);
  border-radius: var(--radius);
  padding: 18px;
}

.feature h3 {
  margin: 8px 0 4px;
  font-size: 1rem;
}

.feature p {
  margin: 0;
  font-size: .9rem;
  color: var(--muted);
}

.icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--brand);
  color: #fff;
  font-size: 1.2rem;
}

.form-section {
  background: linear-gradient(180deg, #fff, var(--alt));
}

.form-section .form {
  max-width: 560px;
  margin-inline: auto;
}

.card {
  box-shadow: 0 16px 40px rgba(13, 70, 92, .12);
}


/* --- Compact header --- */

.site-header {
  background: rgba(255, 255, 255, .82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(23, 107, 135, .15);
  box-shadow: 0 4px 20px rgba(13, 70, 92, .06);
}

.header-inner {
  padding: 7px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.brand-mark {
  display: block;
  filter: drop-shadow(
    0 2px 4px rgba(13, 70, 92, .3)
  );
}

.brand-text {
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--ink);
  line-height: 1;
}

.brand-text b {
  margin-left: 3px;
  font-weight: 800;
  background: linear-gradient(
    90deg,
    #176B87,
    #0D465C
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.btn-pill {
  padding: 6px 16px;
  font-size: .82rem;
  letter-spacing: .02em;
  box-shadow: 0 3px 10px rgba(23, 107, 135, .3);
}


/* --- Products --- */

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-top: 32px;
  max-width: 860px;
  margin-inline: auto;
}

.product {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 10px 30px rgba(13, 70, 92, .08);
  transition: transform .2s, box-shadow .2s;
}

.product:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(13, 70, 92, .16);
}

.product-img {
  background: linear-gradient(160deg, #E5F2F7, #fff);
  padding: 8px 16px;
  text-align: center;
}

.product-img img {
  width: min(240px, 80%);
  height: auto;
  mix-blend-mode: multiply;
}

.product-body {
  padding: 20px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.product-body h3 {
  margin: 0 0 8px;
  font-size: 1.15rem;
}

.product-body p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: .95rem;
}

.product-body .price {
  margin-top: auto;
  color: var(--ink);
  font-size: 1.5rem;
  font-weight: 800;
}

.price span {
  font-size: .85rem;
  font-weight: 500;
  color: var(--muted);
  margin-right: 2px;
}


/* --- Professional polish --- */

h1,
h2,
h3 {
  letter-spacing: -.01em;
}

h2.center::after {
  content: "";
  display: block;
  width: 48px;
  height: 4px;
  border-radius: 4px;
  margin: 14px auto 0;
  background: linear-gradient(
    90deg,
    #5BB2CC,
    var(--brand-dark)
  );
}

.eyebrow.center {
  text-align: center;
}

.section-sub {
  max-width: 560px;
  margin: 16px auto 0;
  color: var(--muted);
}

.section {
  padding: 84px 0;
}

.hero {
  background:
    radial-gradient(
      circle at 85% 10%,
      #D9EEF4 0,
      transparent 45%
    ),
    linear-gradient(
      180deg,
      var(--alt),
      #fff
    );
}

.hero h1 {
  background: linear-gradient(
    120deg,
    var(--ink) 40%,
    var(--brand-dark)
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.about .card {
  box-shadow: 0 24px 60px rgba(13, 70, 92, .18);
  border-top: 4px solid var(--brand);
}

.feature {
  border: 1px solid rgba(23, 107, 135, .18);
  background: #fff;
}


/* Products: dark showcase band */

.products {
  background: linear-gradient(
    160deg,
    #0D2733 0%,
    #123E50 55%,
    #176B87 100%
  );
  color: #fff;
  position: relative;
  overflow: hidden;
}

.products::before {
  content: "";
  position: absolute;
  top: -140px;
  right: -140px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(91, 178, 204, .28),
    transparent 70%
  );
}

.products .container {
  position: relative;
}

.products .eyebrow {
  color: #72BCD3;
}

.products .section-sub {
  color: #B9D3DD;
}

.product-grid {
  max-width: 940px;
  gap: 32px;
  margin-top: 44px;
}

.product {
  position: relative;
  border: 0;
  border-radius: 24px;
  box-shadow: 0 24px 50px rgba(0, 0, 0, .35);
  color: var(--ink);
}

.product:hover {
  transform: translateY(-6px);
  box-shadow: 0 30px 60px rgba(0, 0, 0, .45);
}

.tag {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 1;
  background: var(--brand);
  color: #fff;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 999px;
}

.tag-alt {
  background: var(--ink);
}

.product-img {
  padding: 20px 16px 0;
  background: radial-gradient(
    circle at 50% 55%,
    #D3EBF2,
    #F4FAFC 70%
  );
}

.product-img img {
  width: min(230px, 72%);
}

.product-body {
  padding: 22px 26px 26px;
}

.product-body h3 {
  font-size: 1.2rem;
  min-height: 2.9em;
}

.mini-list {
  list-style: none;
  padding: 0;
  margin: 0 0 18px;
  font-size: .88rem;
  color: var(--muted);
}

.mini-list li {
  padding-left: 22px;
  position: relative;
  margin-bottom: 4px;
}

.mini-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--brand);
  font-weight: 700;
}

.buy {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.buy .price {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  line-height: 1.25;
}

.buy .price span {
  display: block;
  margin: 0 0 5px;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.buy .btn {
  flex: 0 0 auto;
  white-space: nowrap;
  padding-inline: 18px;
}

.steps li {
  border: 0;
  box-shadow: 0 8px 24px rgba(13, 70, 92, .08);
}

details {
  transition: box-shadow .2s;
}

details[open] {
  box-shadow: 0 8px 24px rgba(13, 70, 92, .1);
  border-color: var(--brand);
}

.cta {
  background: linear-gradient(
    135deg,
    var(--brand-dark),
    var(--brand)
  );
}


/* --- Responsive --- */

@media (max-width: 860px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

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

  .hero {
    padding-top: 40px;
  }

  .about {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

  .trust-inner {
    grid-template-columns: 1fr 1fr;
  }

  .hero-media {
    order: -1;
  }
}

@media (max-width: 700px) {
  .product-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 60px 0;
  }

  .product-body h3 {
    min-height: 0;
  }
}

@media (max-width: 480px) {
  .steps {
    grid-template-columns: 1fr;
  }

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

  .buy .price {
    font-size: 1.4rem;
  }

  .buy .btn {
    width: 100%;
    text-align: center;
  }
}