:root {
  --primary-navy: #16324F;
  --steel-blue: #2F5D7E;
  --safety-orange: #F58220;
  --light-bg: #F5F7FA;
  --dark-bg: #121820;
  --white: #FFFFFF;
  --text: #333333;
  --border: #E5E5E5;
  --shadow: 0 16px 40px rgba(22, 50, 79, 0.08);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --max-width: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
}

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

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(var(--max-width), calc(100% - 2rem));
  margin: 0 auto;
}

section {
  padding: 5rem 0;
}

h1,
h2,
h3,
h4 {
  font-family: 'Manrope', sans-serif;
  color: var(--primary-navy);
  line-height: 1.2;
  margin: 0 0 1rem;
}

h1 {
  font-size: clamp(2.2rem, 4vw, 4.2rem);
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
}

h3 {
  font-size: 1.3rem;
}

p {
  margin: 0 0 1rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.95rem 1.5rem;
  font-weight: 600;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--safety-orange);
  color: var(--white);
  box-shadow: 0 10px 24px rgba(245, 130, 32, 0.2);
}

.button-secondary {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.25);
}

.button-ghost {
  background: transparent;
  color: var(--primary-navy);
  border: 1px solid var(--border);
}

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--safety-orange);
  margin-bottom: 1rem;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 3rem;
}

.section-alt {
  background: var(--light-bg);
}

.section-accent {
  background: linear-gradient(135deg, var(--primary-navy), var(--steel-blue));
  color: var(--white);
}

.section-accent h2,
.section-accent h3,
.section-accent .eyebrow {
  color: var(--white);
}

.card,
.project-card,
.hero-card,
.cta-box,
.about-preview-card,
.industry-card,
.contact-card,
.timeline-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}