:root {
  color-scheme: light;
  font-family: Inter, ui-rounded, "SF Pro Rounded", "Segoe UI", system-ui, sans-serif;
  color: #173b3f;
  background: #eef7f5;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 92% 4%, rgba(14, 165, 164, .19), transparent 30rem),
    radial-gradient(circle at 5% 70%, rgba(249, 115, 22, .09), transparent 28rem),
    linear-gradient(155deg, #f8fcfb 0%, #edf8f6 55%, #e8f3f1 100%);
}

a { color: #0f766e; text-underline-offset: 3px; }
a:hover { color: #0b5c56; }

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  border-bottom: 1px solid rgba(15, 118, 110, .12);
  background: rgba(247, 252, 251, .88);
  backdrop-filter: blur(18px);
}

.nav,
.page-shell {
  width: min(920px, calc(100% - 36px));
  margin: 0 auto;
}

.nav {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: #173b3f;
  text-decoration: none;
}

.brand img { width: 40px; height: 40px; }
.brand strong { display: block; font-size: 17px; letter-spacing: -.02em; }
.brand span { display: block; margin-top: 1px; color: #6b8486; font-size: 11px; }
.nav-link { font-size: 13px; font-weight: 700; text-decoration: none; }

.page-shell { padding: 70px 0 80px; }

.hero {
  margin-bottom: 26px;
  border: 1px solid rgba(15, 118, 110, .14);
  border-radius: 24px;
  padding: clamp(26px, 5vw, 48px);
  background: rgba(255, 255, 255, .82);
  box-shadow: 0 24px 60px rgba(25, 78, 79, .1), inset 0 1px 0 #fff;
}

.eyebrow {
  margin: 0 0 10px;
  color: #0f766e;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}

h1 { max-width: 720px; margin: 0; font-size: clamp(32px, 6vw, 54px); line-height: 1.02; letter-spacing: -.045em; }
.lead { max-width: 700px; margin: 18px 0 0; color: #587477; font-size: 17px; line-height: 1.7; }
.updated { margin-top: 18px; color: #799092; font-size: 12px; }

.content-card {
  border: 1px solid rgba(15, 118, 110, .13);
  border-radius: 20px;
  padding: clamp(24px, 4vw, 38px);
  background: rgba(255, 255, 255, .88);
  box-shadow: 0 15px 42px rgba(27, 73, 74, .07);
}

.content-card section + section { margin-top: 34px; padding-top: 32px; border-top: 1px solid #e2ecea; }
h2 { margin: 0 0 11px; color: #173b3f; font-size: 21px; letter-spacing: -.025em; }
h3 { margin: 22px 0 7px; font-size: 15px; }
p, li { color: #4f6a6d; font-size: 14px; line-height: 1.75; }
p { margin: 8px 0; }
ul, ol { margin: 10px 0; padding-left: 22px; }
li + li { margin-top: 7px; }

.callout {
  margin: 20px 0;
  border: 1px solid #cfe5e1;
  border-left: 4px solid #0f766e;
  border-radius: 13px;
  padding: 14px 16px;
  color: #31575a;
  background: #f1faf8;
}

.button-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid #cfe0dd;
  border-radius: 12px;
  padding: 9px 15px;
  color: #31575a;
  background: #fff;
  font-size: 13px;
  font-weight: 750;
  text-decoration: none;
}
.button-primary { border-color: transparent; color: #fff; background: linear-gradient(135deg, #0f766e, #0891b2); box-shadow: 0 9px 22px rgba(8, 145, 178, .2); }

.site-footer { padding: 24px 0 34px; color: #708789; font-size: 12px; text-align: center; }

@media (max-width: 600px) {
  .nav, .page-shell { width: min(100% - 24px, 920px); }
  .page-shell { padding-top: 30px; }
  .hero, .content-card { border-radius: 18px; }
  .brand span { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}