:root {
  --navy:#071a2c;
  --blue:#1f78bd;
  --orange:#f59b16;
  --ice:#eef7ff;
  --text:#152232;
  --muted:#5c6b7a;
  --card:#ffffff;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--text);
  background:linear-gradient(180deg,#f7fbff 0%,#ffffff 52%,#eef7ff 100%);
}
a{color:inherit}
.site-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:18px clamp(18px,4vw,64px);
  background:rgba(255,255,255,.94);
  border-bottom:1px solid #dce8f3;
  position:sticky;
  top:0;
  z-index:5;
  backdrop-filter:blur(12px);
}
.brand img{width:min(420px,78vw);height:auto;display:block}
nav{display:flex;gap:20px;flex-wrap:wrap;font-weight:800;color:var(--navy)}
nav a{text-decoration:none}
nav a:hover{color:var(--blue)}
.hero{
  display:grid;
  grid-template-columns:minmax(0,1.2fr) minmax(280px,.8fr);
  gap:40px;
  padding:70px clamp(18px,5vw,80px);
  align-items:center;
}
.eyebrow{
  color:var(--blue);
  text-transform:uppercase;
  letter-spacing:.12em;
  font-weight:900;
  font-size:.82rem;
}
h1{
  font-size:clamp(2.7rem,6vw,5.8rem);
  line-height:.95;
  margin:0 0 22px;
  color:var(--navy);
  letter-spacing:-.06em;
}
.lead{
  font-size:clamp(1.08rem,2vw,1.35rem);
  color:var(--muted);
  line-height:1.6;
  max-width:740px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.button{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:14px 20px;
  border-radius:999px;
  text-decoration:none;
  font-weight:900;
}
.primary{background:var(--orange);color:#111}
.secondary{border:2px solid #bfd6ea;color:var(--navy);background:#fff}
.hero-card{
  background:var(--navy);
  color:#fff;
  border-radius:28px;
  padding:34px;
  box-shadow:0 24px 70px rgba(7,26,44,.22);
  min-height:360px;
  position:relative;
  overflow:hidden;
}
.hero-card:after{
  content:"";
  position:absolute;
  right:-60px;
  bottom:-80px;
  width:260px;
  height:260px;
  border-radius:50%;
  background:rgba(45,130,197,.35);
}
.temp{font-size:5rem;font-weight:1000;color:var(--orange);line-height:1}
.snow{font-size:5rem;line-height:1;margin:10px 0}
.hero-card h2{font-size:2rem;margin:0 0 8px}
.hero-card p{color:#d7e6f2;line-height:1.6;position:relative;z-index:1}
.cards{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
  padding:0 clamp(18px,5vw,80px) 60px;
}
.cards article,.feature,.article-grid,.about{
  background:var(--card);
  border:1px solid #dce8f3;
  border-radius:24px;
  box-shadow:0 16px 45px rgba(21,34,50,.06);
}
.cards article{padding:28px}
.cards span{color:var(--orange);font-weight:1000}
.cards h2,.feature h2,.article-grid h2,.about h2{color:var(--navy);margin-top:8px}
.cards p,.feature p,.about p{color:var(--muted);line-height:1.65}
.feature{
  margin:0 clamp(18px,5vw,80px) 60px;
  padding:34px;
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:28px;
}
.calc-preview{
  background:var(--ice);
  border-radius:20px;
  padding:24px;
  display:grid;
  gap:14px;
  color:var(--navy);
}
.article-grid,.about{
  margin:0 clamp(18px,5vw,80px) 60px;
  padding:34px;
}
.links{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:14px;
}
.links a{
  background:var(--ice);
  border:1px solid #d3e5f4;
  border-radius:16px;
  padding:18px;
  text-decoration:none;
  font-weight:900;
  color:var(--navy);
}
.site-footer{
  padding:34px clamp(18px,5vw,80px);
  color:#5c6b7a;
  border-top:1px solid #dce8f3;
}
@media (max-width:820px){
  .site-header{align-items:flex-start;flex-direction:column}
  nav{font-size:.95rem}
  .hero,.feature{grid-template-columns:1fr}
  .cards,.links{grid-template-columns:1fr}
}