:root {
  --bg: #ffffff;
  --text: #171717;
  --muted: #6d6d6d;
  --line: #e7e7e7;
  --accent: #17233a;
  --max: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.48;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px 24px;
  background: rgba(255,255,255,.97);
  border-bottom: 1px solid var(--line);
}

.brand {
  font-weight: 700;
  letter-spacing: .08em;
  font-size: 13px;
}

nav { display: flex; gap: 24px; font-size: 13px; }
nav a { color: var(--muted); }
nav a:hover { color: var(--text); }

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 58px 24px;
  border-bottom: 1px solid var(--line);
}

.hero { padding-top: 72px; padding-bottom: 64px; }
.kicker, .section-label {
  margin: 0 0 12px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--muted);
}

h1, h2, h3 { margin: 0; letter-spacing: -.025em; }
h1 {
  max-width: 780px;
  font-size: clamp(38px, 5.2vw, 56px);
  line-height: 1.02;
  font-weight: 650;
  margin-bottom: 20px;
}
h2 {
  max-width: 760px;
  font-size: clamp(26px, 3.2vw, 36px);
  line-height: 1.12;
  font-weight: 620;
}
h3 {
  font-size: 17px;
  line-height: 1.25;
  font-weight: 650;
}

p { margin: 0; color: #333; }
.hero-focus {
  font-size: clamp(18px, 2.1vw, 23px);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.hero-secondary { color: var(--muted); font-size: 15px; }
.cta-link {
  display: inline-block;
  margin-top: 24px;
  font-weight: 600;
  font-size: 14px;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--text);
}

.section-intro { margin-bottom: 30px; }
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 40px;
  border-top: 1px solid var(--line);
}
.expertise-grid article {
  position: relative;
  padding: 22px 0 24px 42px;
  border-bottom: 1px solid var(--line);
}
.expertise-grid article:nth-child(odd) { padding-right: 18px; }
.num {
  position: absolute;
  left: 0;
  top: 24px;
  color: #9a9a9a;
  font-size: 11px;
  font-weight: 600;
}
.expertise-grid h3 { margin-bottom: 7px; }
.expertise-grid p { font-size: 14px; color: var(--muted); max-width: 430px; }

.compact-section { padding-top: 50px; padding-bottom: 50px; }
.intervention-list { border-top: 1px solid var(--line); }
.intervention-item {
  display: grid;
  grid-template-columns: minmax(260px, .9fr) minmax(0, 1.5fr);
  gap: 28px;
  align-items: baseline;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
}
.intervention-item strong { font-size: 14px; }
.intervention-item span { color: var(--muted); font-size: 14px; }

.about-section { padding-top: 54px; padding-bottom: 54px; }
.about-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 60px;
  align-items: start;
}
.signature-line { margin-top: 15px; color: var(--muted); font-size: 14px; }
.about-copy { font-size: 15px; }
.about-copy p { margin-bottom: 13px; }
.about-copy .about-highlight {
  color: var(--text);
  font-weight: 600;
  padding-top: 5px;
}

.contact-section { padding-top: 52px; padding-bottom: 58px; }
.contact-section h2 { margin-bottom: 12px; }
.contact-section > p:not(.section-label):not(.email) { max-width: 690px; color: var(--muted); }
.button {
  display: inline-block;
  margin-top: 22px;
  padding: 12px 16px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
}
.email { margin-top: 14px; font-size: 12px; color: #8a8a8a; }

footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 22px 24px 28px;
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: #8a8a8a;
}

@media (max-width: 760px) {
  .site-header { padding: 16px 18px; }
  nav { display: none; }
  .section { padding: 44px 18px; }
  .hero { padding-top: 54px; padding-bottom: 48px; }
  h1 { font-size: 38px; }
  h2 { font-size: 27px; }
  .hero-focus { font-size: 18px; }
  .expertise-grid { grid-template-columns: 1fr; }
  .expertise-grid article:nth-child(odd) { padding-right: 0; }
  .intervention-item { grid-template-columns: 1fr; gap: 5px; padding: 15px 0; }
  .about-grid { grid-template-columns: 1fr; gap: 28px; }
  footer { padding: 20px 18px 26px; }
}