:root {
  --ink: #071011;
  --paper: #f7f6f0;
  --cyan: #17b8d0;
  --leaf: #9dbb43;
  --mint: #58beae;
  --line: rgba(7, 16, 17, 0.14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 88% 5%, rgba(23, 184, 208, 0.16), transparent 28rem),
    linear-gradient(180deg, #fff 0%, var(--paper) 58%, #edf7f4 100%);
  font-family: Inter, system-ui, sans-serif;
  line-height: 1.7;
}

a { color: inherit; text-underline-offset: 0.2em; }
a:hover { color: #087f91; }

.shell { width: min(1160px, calc(100% - 2rem)); margin: 0 auto; }
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.35rem 0;
}
.topbar img { width: 168px; height: auto; }
.topbar nav { display: flex; flex-wrap: wrap; gap: 1rem; font-size: 0.9rem; font-weight: 700; }

.hero { padding: 5.5rem 0 3.5rem; }
.eyebrow { margin: 0 0 1rem; color: #087f91; font-size: 0.78rem; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; }
h1, h2 { font-family: "Playfair Display", Georgia, serif; }
h1 { max-width: 850px; margin: 0; font-size: clamp(3.2rem, 8vw, 7.6rem); line-height: 0.95; letter-spacing: -0.035em; }
.lead { max-width: 760px; margin: 2rem 0 0; color: rgba(7, 16, 17, 0.68); font-size: clamp(1.08rem, 2vw, 1.35rem); }
.updated { margin-top: 1rem; color: rgba(7, 16, 17, 0.5); font-size: 0.88rem; }

.summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 1rem 0 4rem;
}
.summary article {
  min-height: 12rem;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: 1.4rem;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 22px 60px rgba(7, 16, 17, 0.07);
}
.summary span { display: block; margin-bottom: 2rem; color: #087f91; font-size: 0.75rem; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; }
.summary p { margin: 0; font-weight: 650; line-height: 1.45; }

.layout { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 4rem; align-items: start; padding-bottom: 6rem; }
.toc { position: sticky; top: 1.5rem; padding: 1.3rem; border-left: 3px solid var(--cyan); font-size: 0.92rem; }
.toc strong { display: block; margin-bottom: 0.8rem; }
.toc a { display: block; padding: 0.24rem 0; color: rgba(7, 16, 17, 0.64); text-decoration: none; }
.content { min-width: 0; }
.content section { scroll-margin-top: 2rem; padding: 0 0 3.6rem; }
.content h2 { margin: 0 0 1.2rem; font-size: clamp(2rem, 4vw, 3.4rem); line-height: 1.05; }
.content h3 { margin: 2rem 0 0.55rem; font-size: 1.05rem; }
.content p, .content li { color: rgba(7, 16, 17, 0.76); }
.content ul { padding-left: 1.25rem; }
.content li + li { margin-top: 0.55rem; }
.callout { padding: 1.5rem; border: 1px solid rgba(88, 190, 174, 0.42); border-radius: 1.2rem; background: rgba(221, 237, 234, 0.58); }
.contact-card { padding: 2rem; border-radius: 1.4rem; color: var(--paper); background: var(--ink); }
.contact-card a { color: var(--cyan); }
.button { display: inline-flex; margin-top: 1rem; padding: 0.75rem 1.1rem; border-radius: 999px; background: var(--cyan); color: var(--ink) !important; font-weight: 800; text-decoration: none; }

footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; padding: 2rem 0 3rem; border-top: 1px solid var(--line); color: rgba(7, 16, 17, 0.58); font-size: 0.86rem; }
footer nav { display: flex; flex-wrap: wrap; gap: 1rem; }

@media (max-width: 820px) {
  .summary { grid-template-columns: 1fr; }
  .summary article { min-height: auto; }
  .layout { grid-template-columns: 1fr; gap: 2rem; }
  .toc { position: static; }
}

@media (max-width: 560px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  .hero { padding-top: 3rem; }
}