:root {
  --navy: #071a33;
  --blue: #123f7a;
  --ink: #16191f;
  --muted: #667085;
  --paper: #f7f5f0;
  --sand: #d9c5a5;
  --sand-2: #efe4d2;
  --white: #ffffff;
  --line: #ded7cc;
  --green: #2f6b57;
  --red: #9f332d;
  --shadow: 0 24px 64px rgba(7, 26, 51, .14);
  --radius: 8px;
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  line-height: 1.68;
}
a { color: inherit; }
p { margin: 0 0 1.1rem; }
h1, h2, h3 {
  margin: 0;
  color: var(--ink);
  line-height: 1.08;
  letter-spacing: 0;
  overflow-wrap: anywhere;
  hyphens: auto;
}
h1, h2 { font-family: Georgia, "Times New Roman", serif; font-weight: 700; }
h1 { max-width: 880px; color: var(--white); font-size: clamp(2.55rem, 6vw, 5rem); }
h2 { margin-top: 2.4rem; margin-bottom: 1rem; font-size: clamp(1.75rem, 3vw, 2.7rem); }
h3 { margin-top: 1.8rem; margin-bottom: .7rem; font-size: 1.2rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid rgba(222, 215, 204, .72);
  background: rgba(247, 245, 240, .92);
  backdrop-filter: blur(14px);
}
.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 900;
  color: var(--navy);
}
.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: var(--navy);
  font-size: .78rem;
  letter-spacing: .05em;
}
.nav-links {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 16px;
  color: var(--muted);
  font-size: .93rem;
}
.nav-links a {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  font-weight: 850;
}
.nav-links a:hover { color: var(--blue); }
.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--navy);
  border-radius: var(--radius);
  padding: 0 18px;
  background: var(--navy);
  color: var(--white);
  font-weight: 900;
  text-decoration: none;
  box-shadow: 0 12px 24px rgba(7, 26, 51, .18);
}
.button.sand { border-color: var(--sand); background: var(--sand); color: var(--navy); }

.hero {
  color: var(--white);
  background:
    linear-gradient(115deg, rgba(7, 26, 51, .98) 0%, rgba(18, 63, 122, .92) 54%, rgba(35, 38, 45, .9) 100%),
    linear-gradient(90deg, rgba(217, 197, 165, .24), transparent);
}
.hero-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 82px 22px 58px;
}
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  color: var(--sand);
  font-size: .8rem;
  font-weight: 950;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.kicker:before { content: ""; width: 44px; height: 2px; background: currentColor; }
.hero-copy {
  max-width: 760px;
  margin-top: 20px;
  color: rgba(255, 255, 255, .84);
  font-size: 1.1rem;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 54px 22px 76px;
}
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 34px;
  align-items: start;
}
.content {
  min-width: 0;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 12px 30px rgba(7, 26, 51, .06);
}
.content p, .content li { color: #3f4652; }
.content ul, .content ol { margin: 0 0 1.2rem; padding-left: 1.35rem; }
.content a { color: var(--blue); font-weight: 850; }
.lead { font-size: 1.12rem; color: #303742; }
.hero-image {
  width: 100%;
  margin: 0 0 1.8rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--sand-2);
}
.hero-image img {
  display: block;
  width: 100%;
  height: auto;
}
.note, .compare-box, .metric-box {
  margin: 1.6rem 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}
.compare-box {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.compare-box div {
  padding: 16px;
  border-radius: var(--radius);
  background: var(--white);
}
.compare-box strong { display: block; margin-bottom: .4rem; color: var(--navy); }
.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 1.2rem 0;
}
.metric-box { margin: 0; }
.metric-box strong { display: block; color: var(--navy); font-size: 1.35rem; }
.sidebar {
  position: sticky;
  top: 90px;
  display: grid;
  gap: 16px;
}
.side-card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}
.side-card h3 { margin-top: 0; }
.side-card a { color: var(--blue); font-weight: 900; }

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.blog-card {
  min-width: 0;
  display: grid;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  box-shadow: 0 12px 30px rgba(7, 26, 51, .06);
  text-decoration: none;
}
.blog-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; background: var(--sand-2); }
.blog-card div { padding: 18px; }
.blog-card h2 { margin: 0 0 .7rem; font-family: Inter, "Segoe UI", Arial, sans-serif; font-size: 1.2rem; line-height: 1.22; }
.blog-card p { color: var(--muted); }

.calculator {
  display: grid;
  gap: 14px;
  margin: 1.6rem 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}
.calculator label {
  display: grid;
  gap: 6px;
  font-weight: 850;
  color: var(--navy);
}
.calculator input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 13px;
  font: inherit;
  background: var(--white);
}
.results {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.result {
  padding: 16px;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--line);
}
.result strong { display: block; color: var(--navy); font-size: 1.4rem; }

footer {
  border-top: 1px solid var(--line);
  padding: 28px 22px 82px;
  color: var(--muted);
  background: var(--white);
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}
footer a { color: var(--muted); text-decoration: none; font-weight: 850; }

@media (max-width: 920px) {
  .article-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .blog-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .compare-box, .metric-grid, .results { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav { align-items: flex-start; }
  .nav-links { flex-wrap: wrap; gap: 10px; }
  .nav-links a:not(.button) { display: none; }
  .brand span:last-child { max-width: 190px; line-height: 1.15; }
  .hero-inner, .wrap { padding-left: 18px; padding-right: 18px; }
  .content { padding: 20px; }
  .blog-grid { grid-template-columns: 1fr; }
}