:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-soft: #f7f9fc;
  --ink: #0f172a;
  --muted: #475569;
  --line: #d9e3ef;
  --accent: #0f766e;
  --accent-ink: #f4fffd;
  --shadow-sm: 0 8px 18px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 18px 36px rgba(15, 23, 42, 0.1);
  --radius: 16px;
  --container: min(1120px, 92vw);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Manrope", "Avenir Next", "Segoe UI", sans-serif;
  line-height: 1.65;
  background:
    linear-gradient(180deg, rgba(15, 118, 110, 0.05), transparent 220px),
    var(--bg);
}

h1,
h2,
h3,
h4 {
  margin: 0 0 0.7rem;
  line-height: 1.2;
  letter-spacing: -0.015em;
}

h1,
h2 {
  font-family: "Source Serif 4", Georgia, serif;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.55rem, 3vw, 2.35rem);
}

h3 {
  font-size: clamp(1.16rem, 2vw, 1.4rem);
}

h4 {
  font-size: 1.06rem;
}

p {
  margin: 0 0 1rem;
}

a {
  color: inherit;
}

ul {
  margin: 0;
  padding-left: 1.2rem;
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent), white 45%);
  outline-offset: 2px;
}

.container {
  width: var(--container);
  margin-inline: auto;
}

.section {
  padding: clamp(2.75rem, 4.8vw, 4.9rem) 0;
}

.section-surface {
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--surface-soft), white 45%),
    color-mix(in srgb, var(--surface-soft), white 35%)
  );
  border-top: 1px solid color-mix(in srgb, var(--line), white 20%);
  border-bottom: 1px solid color-mix(in srgb, var(--line), white 20%);
}

.stack > * + * {
  margin-top: 0.95rem;
}

.eyebrow {
  margin-bottom: 0.45rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lead {
  max-width: 66ch;
  font-size: clamp(1.05rem, 1.6vw, 1.26rem);
  color: var(--muted);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  padding: 0.6rem 0;
  backdrop-filter: blur(14px);
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--bg), white 60%),
    color-mix(in srgb, var(--bg), white 30%)
  );
  border-bottom: 1px solid color-mix(in srgb, var(--line), white 20%);
}

.nav-shell {
  position: relative;
  min-height: 3.9rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.15rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid color-mix(in srgb, var(--line), white 15%);
  border-radius: 18px;
  background: color-mix(in srgb, var(--surface), white 26%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.82),
    var(--shadow-sm);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.56rem;
  text-decoration: none;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 1.24rem;
  font-weight: 700;
}

.brand::before {
  content: "";
  width: 0.56rem;
  height: 0.56rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #0f766e, #16a394);
  box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.14);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.32rem;
  padding: 0.32rem;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--line), white 12%);
  background: color-mix(in srgb, var(--surface), white 12%);
}

.site-nav a {
  position: relative;
  text-decoration: none;
  color: color-mix(in srgb, var(--ink), black 6%);
  font-weight: 600;
  line-height: 1;
  border-radius: 999px;
  padding: 0.56rem 0.8rem;
  transition:
    background-color 180ms ease,
    color 180ms ease,
    transform 140ms ease;
}

.site-nav a:not(.btn):hover,
.site-nav a:not(.btn):focus-visible {
  color: var(--ink);
  background: color-mix(in srgb, var(--surface-soft), white 55%);
  transform: translateY(-1px);
}

.site-nav a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0.82rem;
  right: 0.82rem;
  bottom: 0.34rem;
  height: 2px;
  border-radius: 999px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

.site-nav a:not(.btn):hover::after,
.site-nav a:not(.btn):focus-visible::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 0.34rem;
  width: 2.62rem;
  height: 2.62rem;
  border: 1px solid color-mix(in srgb, var(--line), white 10%);
  border-radius: 12px;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--surface), white 35%),
    color-mix(in srgb, var(--surface-soft), white 20%)
  );
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: transform 150ms ease, box-shadow 150ms ease;
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.nav-toggle span {
  width: 1.18rem;
  height: 2px;
  margin-inline: auto;
  background: var(--ink);
  transition: transform 180ms ease, opacity 180ms ease;
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(6.8px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-6.8px) rotate(-45deg);
}

.hero {
  padding-top: clamp(3.2rem, 6.5vw, 5.4rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: clamp(1.3rem, 3.5vw, 2.2rem);
  align-items: start;
}

.hero-panel {
  padding: 1.2rem 1.2rem 1.05rem;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.68rem;
  margin-top: 1.45rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 1px solid transparent;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--accent), white 10%),
    var(--accent)
  );
  color: var(--accent-ink);
  font-weight: 700;
  text-decoration: none;
  line-height: 1;
  padding: 0.84rem 1.16rem;
  box-shadow: 0 10px 20px rgba(15, 118, 110, 0.24);
  transition: transform 160ms ease, box-shadow 160ms ease, filter 160ms ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
  filter: saturate(1.06);
  box-shadow: 0 14px 24px rgba(15, 118, 110, 0.28);
}

.btn-ghost {
  border-color: color-mix(in srgb, var(--line), white 8%);
  background: var(--surface);
  color: var(--ink);
  box-shadow: none;
}

.btn-sm {
  padding: 0.68rem 0.94rem;
  font-size: 0.93rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.card,
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1rem 1.08rem;
  box-shadow: var(--shadow-sm);
}

.three-col {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.check-list {
  list-style: none;
  padding: 0;
}

.check-list li {
  margin-top: 0.74rem;
  padding-left: 1.5rem;
  position: relative;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.43rem;
  height: 0.43rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent), white 8%);
}

.section-cta {
  background: linear-gradient(125deg, #eaf2fc 0%, #f7fbff 55%, #effaf8 100%);
}

.cta-panel {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1rem;
  align-items: start;
  background: color-mix(in srgb, var(--surface), white 12%);
  border: 1px solid color-mix(in srgb, var(--line), white 10%);
  border-radius: calc(var(--radius) + 2px);
  padding: clamp(1rem, 2.2vw, 1.9rem);
  box-shadow: var(--shadow-md);
}

.cta-actions {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
}

.cta-actions .btn {
  width: 100%;
  margin-top: 0.6rem;
}

.site-footer {
  padding: 1.3rem 0 2rem;
  color: var(--muted);
  font-size: 0.95rem;
}

blockquote {
  margin: 1rem 0 0;
  padding: 0.9rem 1rem;
  border-left: 4px solid color-mix(in srgb, var(--accent), white 10%);
  background: color-mix(in srgb, var(--surface-soft), white 40%);
  border-radius: 10px;
  color: var(--muted);
}

@media (max-width: 980px) {
  .hero-grid,
  .cta-panel {
    grid-template-columns: 1fr;
  }

  .three-col {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 0.58rem);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 0.78rem;
    border-radius: 15px;
    background: color-mix(in srgb, var(--surface), white 20%);
    box-shadow: var(--shadow-md);
    transform-origin: top;
    visibility: hidden;
    opacity: 0;
    transform: scaleY(0.92) translateY(-8px);
    pointer-events: none;
    transition: transform 170ms ease, opacity 170ms ease;
  }

  .site-nav.is-open {
    visibility: visible;
    opacity: 1;
    transform: scaleY(1) translateY(0);
    pointer-events: auto;
  }

  .site-nav a {
    border-radius: 10px;
    padding: 0.72rem 0.72rem;
  }

  .site-nav a:not(.btn) {
    border-bottom: 1px solid color-mix(in srgb, var(--line), white 15%);
  }

  .site-nav a:last-child {
    margin-top: 0.58rem;
  }

  .site-nav a:not(.btn)::after {
    display: none;
  }
}

@media (max-width: 680px) {
  .three-col {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 2.45rem 0;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .hero-grid > *,
  .cards > *,
  .three-col > * {
    animation: rise-in 420ms ease both;
  }

  .cards > *:nth-child(2),
  .three-col > *:nth-child(2) {
    animation-delay: 70ms;
  }

  .cards > *:nth-child(3),
  .three-col > *:nth-child(3) {
    animation-delay: 120ms;
  }

  .cards > *:nth-child(4) {
    animation-delay: 170ms;
  }

  .cards > *:nth-child(5) {
    animation-delay: 220ms;
  }
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}