/* Estrato® */
:root {
  --blue: #1e5fa8;
  --blue-d: #164a86;
  --green: #8fbf5a;
  --teal: #4db3b8;
  --ink: #143049;
  --soft: #3d5568;
  --muted: #6b7c8c;
  --line: #d7e2ea;
  --paper: #eef4f8;
  --cream: #f6f9fb;
  --navy: #0d2742;
  --max: 1120px;
  --read: 40rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
}
h1, h2 {
  font-family: "Instrument Serif", Georgia, serif;
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.12;
}
h1 { font-size: clamp(2.05rem, 4.8vw, 3.4rem); margin: 0 0 1.35rem; }
h2 { font-size: clamp(1.7rem, 3.3vw, 2.45rem); margin: 0 0 1.2rem; }
h3 { margin: 0; font-size: 1.15rem; }
p { margin: 0 0 1rem; }
a { color: inherit; }
button, input, textarea, select { font: inherit; }

.skip { position: absolute; left: -999px; }
.skip:focus { left: 1rem; top: 1rem; background: #fff; padding: .5rem 1rem; z-index: 80; }

.wrap { width: min(var(--max), calc(100% - 2.4rem)); margin-inline: auto; }
.wrap.narrow { width: min(var(--read), calc(100% - 2.4rem)); }

.topbar {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .45rem 1.2rem;
  background: color-mix(in srgb, #fff 88%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.brand img { height: 50px; width: auto; display: block; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--blue); color: #fff; border: 0; cursor: pointer;
  text-decoration: none;
  font-weight: 600; font-size: .95rem;
  padding: .95rem 1.3rem;
  transition: background .15s ease, transform .15s ease;
}
.btn:hover { background: var(--blue-d); }
.btn:active { transform: translateY(1px); }
.btn-sm { padding: .55rem .85rem; font-size: .78rem; }
.btn-full { width: 100%; }

.hero {
  padding: 3.2rem 0 4.2rem;
  background:
    radial-gradient(900px 380px at 100% 0%, rgba(143,191,90,.14), transparent 55%),
    radial-gradient(700px 320px at 0% 20%, rgba(30,95,168,.08), transparent 50%);
}
.hero-grid { display: grid; gap: 2rem; align-items: center; }
.kicker {
  font-size: .72rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--blue); font-weight: 600; margin-bottom: 1.1rem;
}
.lede { color: var(--soft); font-size: 1.12rem; max-width: 38rem; }
.hero-visual { position: relative; }
#system { width: 100%; height: auto; display: block; }
#sys-edges { stroke: var(--blue); stroke-width: 1.1; fill: none; opacity: .38; }
#sys-nodes circle { fill: var(--blue); }
#sys-nodes circle.hub { fill: var(--navy); }
#sys-nodes circle.hot { fill: #c45c26; }
#sys-nodes circle.ok { fill: var(--green); }
.visual-caption {
  position: absolute; right: 0; bottom: 0;
  margin: 0; font-size: .72rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--muted);
}

.block { padding: 5rem 0; }
.block-dark { background: var(--navy); color: #eef4f8; }
.num {
  font-size: .72rem; letter-spacing: .18em; color: var(--blue);
  font-weight: 600; margin: 0 0 .8rem;
}
.block-dark .num { color: var(--green); }
.label {
  font-size: .72rem; letter-spacing: .12em; text-transform: uppercase;
  color: #9eb4c6; margin-bottom: .6rem;
}
.intro { font-size: 1.12rem; color: var(--soft); }
.block-dark p { color: #c5d4e0; }
.block-dark h2 { color: #fff; }

.symbols {
  list-style: none; padding: 0;
  margin: 2rem 0 2.4rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.symbols li {
  background: #fff;
  padding: 1.15rem 1rem 1.05rem;
  display: flex; flex-direction: column; gap: .65rem;
  font-size: .92rem; font-weight: 500;
}
.symbols svg {
  width: 40px; height: 40px;
  fill: var(--blue);
  stroke: var(--blue);
  stroke-width: 1.4;
  stroke-linecap: round;
}
.symbols svg circle { fill: var(--blue); stroke: none; }

.split-sol { display: grid; gap: 2.5rem; align-items: center; }
.highlight {
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 1.45rem; line-height: 1.3;
  color: #fff !important;
  margin: 1.6rem 0 1.2rem;
}
.filter { font-size: .9rem; color: #9eb4c6 !important; }
.sol-visual { margin: 0; }
.sol-visual svg { width: 100%; max-width: 360px; display: block; margin-inline: auto; }
.orbit circle { stroke: rgba(143,191,90,.35); stroke-width: 1; }
.sol-nodes circle { fill: #8fbf5a; }
.sol-nodes .core { fill: #fff; }
.orbit { animation: spin 48s linear infinite; transform-origin: 180px 180px; }

.results {
  list-style: none; padding: 0;
  margin: 2rem 0 2rem;
  display: grid; gap: 1px; background: var(--line);
  border: 1px solid var(--line);
}
.results li {
  background: #fff;
  padding: 1.1rem 1.15rem;
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: .9rem;
  align-items: center;
  font-weight: 500;
}
.results svg {
  width: 40px; height: 40px;
  stroke: var(--blue); fill: var(--blue);
  stroke-width: 1.3; stroke-linecap: round;
}
.results svg circle[fill="none"] { fill: none; }
.close { font-size: 1.18rem; }

.cta-block { background: var(--paper); padding-bottom: 6.5rem; }
.cta-block .btn { margin-top: 1.1rem; }
.form { display: grid; gap: 1rem; margin-top: 1.8rem; }
label { display: grid; gap: .4rem; font-size: .82rem; font-weight: 500; color: var(--soft); }
input, textarea {
  width: 100%; padding: .8rem .85rem;
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  border-radius: 0;
}
textarea { resize: vertical; min-height: 6.5rem; }
input:focus, textarea:focus { outline: 2px solid var(--blue); outline-offset: 1px; }
.fine { text-align: center; color: var(--muted); font-size: .86rem; margin: .2rem 0 0; }
.hp { position: absolute; left: -9999px; }

.foot {
  background: var(--navy); color: #9eb4c6;
  padding: 1.2rem 0 5rem; font-size: .82rem;
}
.foot-inner { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }

.sticky { display: none; }

.sheet {
  border: 0; padding: 0; width: min(28rem, calc(100% - 1.5rem));
  background: #fff; color: var(--ink);
  box-shadow: 0 20px 60px rgba(13,39,66,.25);
}
.sheet::backdrop { background: rgba(13,39,66,.46); }
.sheet .form { margin: 0; padding: 1.3rem 1.3rem 1.5rem; }
.sheet-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-bottom: .4rem; }
.icon-x {
  background: none; border: 0; font-size: 1.6rem; line-height: 1;
  cursor: pointer; color: var(--muted); padding: .2rem .4rem;
}

@media (min-width: 860px) {
  .hero-grid { grid-template-columns: 1fr 1fr; gap: 2.5rem; }
  .brand img { height: 60px; }
  .symbols { grid-template-columns: repeat(3, 1fr); }
  .results { grid-template-columns: 1fr 1fr; }
  .split-sol { grid-template-columns: 1.1fr .9fr; }
  .hero { padding: 4.2rem 0 5.5rem; }
}

@media (max-width: 699px) {
  .topbar .btn { display: none; }
  .sticky {
    display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
    background: var(--blue); color: #fff; border: 0;
    justify-content: center; padding: 1rem;
    font-weight: 600; font-size: .92rem; cursor: pointer;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .orbit { animation: none; }
}

@keyframes spin { to { transform: rotate(360deg); } }

.portrait { margin: 0; }
.portrait img {
  width: 100%;
  height: min(34rem, 70vh);
  object-fit: cover;
  object-position: center 12%;
  display: block;
  background: #0a1a2c;
  border-radius: 20px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
}
.portrait figcaption { margin-top: .85rem; }
.portrait strong {
  display: block;
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  font-weight: 600;
  color: #fff;
}
.portrait span {
  display: block;
  margin-top: .35rem;
  font-size: .84rem;
  color: #9eb4c6;
  line-height: 1.45;
}
@media (max-width: 859px) {
  .portrait img { height: min(26rem, 58vh); object-position: center 10%; }
}