@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@500;600;700&family=Source+Sans+3:wght@400;500;600&display=swap');

:root {
  --navy: #0c2a4a;
  --navy-deep: #061a2f;
  --copper: #bd6529;
  --copper-dark: #9e4f1e;
  --ink: #132642;
  --muted: #4b596b;
  --paper: #ffffff;
  --surface: #f8f8f7;
  --line: #d7dce2;
  --max-width: 1200px;
  --shadow: 0 20px 55px rgba(6, 26, 47, 0.15);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Source Sans 3", Arial, sans-serif;
  font-size: 1.05rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

.container {
  width: min(92%, var(--max-width));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 999;
  transform: translateY(-180%);
  padding: 0.75rem 1rem;
  color: white;
  background: var(--navy);
}

.skip-link:focus {
  transform: translateY(0);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid rgba(12, 42, 74, 0.08);
  backdrop-filter: blur(12px);
}

.header-inner {
  min-height: 128px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.5rem;
}

.brand {
  display: block;
  width: 480px;
  max-width: 49vw;
  text-decoration: none;
}

.brand img {
  width: 100%;
  height: auto;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 2.7rem;
}

.primary-nav a {
  position: relative;
  padding: 0.5rem 0;
  color: var(--navy-deep);
  font-family: "Montserrat", Arial, sans-serif;
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.025em;
  text-decoration: none;
  text-transform: uppercase;
}

.primary-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.65rem;
  height: 2px;
  transform: scaleX(0);
  background: var(--copper);
  transition: transform 180ms ease;
}

.primary-nav a:hover::after,
.primary-nav a:focus-visible::after,
.primary-nav a.active::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 0;
  background: transparent;
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 25px;
  height: 2px;
  margin: 5px auto;
  background: var(--navy);
}

.hero {
  position: relative;
  min-height: 595px;
  display: grid;
  align-items: center;
  overflow: hidden;
  background: url("../images/hero-mountains.jpg") center center / cover no-repeat;
}

.hero-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(4,24,44,0.98) 0%, rgba(4,24,44,0.88) 37%, rgba(4,24,44,0.35) 64%, rgba(4,24,44,0.06) 100%),
    linear-gradient(0deg, rgba(6,26,47,0.12), rgba(6,26,47,0.12));
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-top: 5.4rem;
  padding-bottom: 5.4rem;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  color: white;
  font-family: "Montserrat", Arial, sans-serif;
  font-size: clamp(3.3rem, 5.7vw, 5.55rem);
  font-weight: 700;
  line-height: 1.03;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.hero h1 span,
.hero h1 strong {
  display: block;
}

.hero h1 strong {
  color: #d2763a;
}

.copper-rule,
.section-rule {
  display: block;
  width: 72px;
  height: 3px;
  margin: 1.7rem 0;
  background: var(--copper);
}

.copper-rule.centered {
  margin-inline: auto;
}

.hero p {
  max-width: 560px;
  margin: 0 0 2rem;
  color: rgba(255,255,255,0.94);
  font-size: 1.22rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  min-height: 56px;
  padding: 0.9rem 1.45rem;
  border: 1px solid transparent;
  font-family: "Montserrat", Arial, sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.035em;
  text-decoration: none;
  text-transform: uppercase;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}

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

.button-filled {
  color: white;
  background: var(--copper);
}

.button-filled:hover,
.button-filled:focus-visible {
  background: var(--copper-dark);
}

.button-outline {
  color: var(--copper-dark);
  border-color: var(--copper);
  background: transparent;
}

.button-outline:hover,
.button-outline:focus-visible {
  color: white;
  background: var(--copper);
}

.values-section {
  padding: 2.8rem 0;
  background:
    repeating-radial-gradient(circle at 15% 45%, rgba(12,42,74,0.025) 0, rgba(12,42,74,0.025) 1px, transparent 1px, transparent 14px),
    #fbfbfa;
  border-bottom: 1px solid var(--line);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.value {
  min-height: 190px;
  padding: 0.8rem 2.2rem;
  text-align: center;
  border-right: 1px solid var(--line);
}

.value:last-child {
  border-right: 0;
}

.value svg,
.capability svg {
  width: 58px;
  height: 58px;
  margin: 0 auto 0.75rem;
  fill: none;
  stroke: var(--copper);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.value h2 {
  margin: 0;
  color: var(--navy-deep);
  font-family: "Montserrat", Arial, sans-serif;
  font-size: 1.03rem;
  text-transform: uppercase;
}

.value p {
  margin: 0.55rem 0 0;
  color: #2d3d51;
  line-height: 1.45;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.08fr;
  min-height: 355px;
}

.about-copy {
  width: min(84%, 560px);
  justify-self: end;
  align-self: center;
  padding: 4.2rem 4rem 4.2rem 0;
}

.about-copy h2 {
  margin: 0 0 1.2rem;
  color: var(--navy-deep);
  font-family: "Montserrat", Arial, sans-serif;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1.14;
  letter-spacing: -0.025em;
  text-transform: uppercase;
}

.about-copy p {
  margin: 0 0 1rem;
  color: #354459;
  font-size: 1.08rem;
}

.about-image {
  min-height: 390px;
  background: url("../images/about-mountains.jpg") center center / cover no-repeat;
  clip-path: polygon(9% 0, 100% 0, 100% 100%, 0 100%);
}

.capabilities-section {
  padding: 2.8rem 0 2.5rem;
  color: white;
  background:
    radial-gradient(circle at 92% 15%, rgba(189,101,41,0.12), transparent 30%),
    linear-gradient(130deg, #061a2f, #0b2b4d 68%, #0a2440);
}

.section-heading {
  text-align: center;
}

.section-heading h2 {
  margin: 0;
  font-family: "Montserrat", Arial, sans-serif;
  font-size: clamp(2rem, 3.4vw, 3rem);
  text-transform: uppercase;
}

.capabilities-intro {
  max-width: 900px;
  margin: 1.25rem auto 0;
  color: rgba(255,255,255,0.82);
  font-size: 1rem;
  line-height: 1.7;
  text-align: center;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  margin-top: 1.8rem;
}

.capability {
  min-height: 180px;
  padding: 0.7rem 1.1rem;
  text-align: center;
  border-right: 1px solid rgba(255,255,255,0.34);
}

.capability:last-child {
  border-right: 0;
}

.capability svg {
  width: 58px;
  height: 58px;
  margin-bottom: 0.9rem;
  stroke: #ec772c;
  stroke-width: 1.85;
}

.capability h3 {
  margin: 0;
  color: white;
  font-family: "Montserrat", Arial, sans-serif;
  font-size: 0.88rem;
  line-height: 1.45;
  text-transform: uppercase;
}

.contact-strip {
  padding: 2.5rem 0;
  background:
    repeating-radial-gradient(circle at 4% 50%, rgba(12,42,74,0.025) 0, rgba(12,42,74,0.025) 1px, transparent 1px, transparent 13px),
    #fbfbfa;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.7fr repeat(4, 1fr);
  align-items: stretch;
}

.contact-cta {
  padding: 0.5rem 2.7rem 0.5rem 1.4rem;
  border-right: 1px solid var(--line);
}

.contact-cta h2 {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--navy-deep);
  border-left: 3px solid var(--copper);
  font-family: "Montserrat", Arial, sans-serif;
  font-size: clamp(1.7rem, 2.5vw, 2.55rem);
  line-height: 1.05;
  text-transform: uppercase;
}

.contact-cta p {
  margin: 0.65rem 0 0.8rem 1.4rem;
}

.contact-cta .button {
  min-height: 46px;
  margin-left: 1.4rem;
  padding: 0.65rem 1.15rem;
}

.contact-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  text-align: center;
  border-right: 1px solid var(--line);
}

.contact-item:last-child {
  border-right: 0;
}

.contact-icon {
  display: grid;
  width: 52px;
  height: 52px;
  margin-bottom: 0.55rem;
  place-items: center;
  color: var(--navy-deep);
  border-radius: 50%;
  background: #eef0f2;
  font-size: 1.65rem;
  font-weight: 700;
}

.contact-icon.linkedin {
  font-family: Arial, sans-serif;
  font-size: 1.4rem;
}

.contact-item strong {
  color: var(--navy-deep);
  font-family: "Montserrat", Arial, sans-serif;
  font-size: 0.78rem;
  text-transform: uppercase;
}

.contact-item a,
.contact-item span:last-child {
  margin-top: 0.35rem;
  color: #28384d;
  font-size: 0.86rem;
  text-decoration: none;
}

.site-footer {
  color: rgba(255,255,255,0.82);
  background: var(--navy-deep);
}

.footer-main {
  display: grid;
  grid-template-columns: 1.35fr 0.65fr 0.9fr 1fr;
  gap: 2.7rem;
  padding-top: 2.6rem;
  padding-bottom: 2.6rem;
}

.footer-brand {
  padding-right: 2rem;
  border-right: 1px solid rgba(255,255,255,0.2);
}

.footer-brand img {
  width: 315px;
  max-width: 100%;
  filter: brightness(0) invert(1);
}

.footer-brand p {
  max-width: 330px;
  margin: 1rem 0 0;
  font-size: 0.93rem;
}

.footer-column {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.footer-column h2 {
  margin: 0 0 0.65rem;
  color: white;
  font-family: "Montserrat", Arial, sans-serif;
  font-size: 0.85rem;
  text-transform: uppercase;
}

.footer-column a {
  color: rgba(255,255,255,0.86);
  text-decoration: none;
}

.footer-column a:hover,
.footer-column a:focus-visible {
  color: #ef8240;
}

.footer-column p {
  margin: 0;
}

.footer-bottom {
  padding: 0.8rem 0;
  border-top: 1px solid var(--copper);
  color: rgba(255,255,255,0.74);
  text-align: center;
  font-size: 0.88rem;
}

@media (max-width: 1080px) {
  .header-inner {
    min-height: 108px;
  }

  .brand {
    width: 395px;
  }

  .primary-nav {
    position: absolute;
    top: 108px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1rem 4%;
    background: white;
    border-bottom: 1px solid var(--line);
  }

  .primary-nav.is-open {
    display: flex;
  }

  .primary-nav a {
    padding: 1rem 0;
  }

  .primary-nav a::after {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .value:nth-child(2) {
    border-right: 0;
  }

  .value:nth-child(-n+2) {
    border-bottom: 1px solid var(--line);
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .about-copy {
    width: min(92%, 760px);
    justify-self: center;
    padding: 4.2rem 0;
  }

  .about-image {
    min-height: 390px;
    clip-path: none;
  }

  .capability-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .capability:nth-child(3) {
    border-right: 0;
  }

  .capability:nth-child(-n+3) {
    border-bottom: 1px solid rgba(255,255,255,0.25);
  }

  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-cta {
    grid-column: 1 / -1;
    padding-bottom: 2rem;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .contact-item:nth-child(3) {
    border-right: 0;
  }

  .contact-item {
    padding: 1.5rem 1rem;
    border-bottom: 1px solid var(--line);
  }

  .footer-main {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-brand {
    border-right: 0;
  }
}

@media (max-width: 680px) {
  body {
    font-size: 1rem;
  }

  .header-inner {
    min-height: 88px;
  }

  .brand {
    width: min(320px, 76vw);
    max-width: none;
  }

  .primary-nav {
    top: 88px;
  }

  .hero {
    min-height: 610px;
    background-position: 62% center;
  }

  .hero-shade {
    background: linear-gradient(90deg, rgba(4,24,44,0.98), rgba(4,24,44,0.84) 78%, rgba(4,24,44,0.35));
  }

  .hero-content {
    padding-top: 4.8rem;
    padding-bottom: 4.8rem;
  }

  .hero h1 {
    font-size: clamp(2.8rem, 12.5vw, 4.3rem);
  }

  .values-grid {
    grid-template-columns: 1fr;
  }

  .value,
  .value:nth-child(2) {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .value:last-child {
    border-bottom: 0;
  }

  .capability-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .capability,
  .capability:nth-child(3) {
    border-right: 1px solid rgba(255,255,255,0.25);
    border-bottom: 1px solid rgba(255,255,255,0.25);
  }

  .capability:nth-child(even) {
    border-right: 0;
  }

  .capability:nth-last-child(-n+2) {
    border-bottom: 0;
  }

  .contact-grid,
  .footer-main {
    grid-template-columns: 1fr;
  }

  .contact-item,
  .contact-item:nth-child(3) {
    border-right: 0;
  }

  .footer-brand {
    padding-right: 0;
  }

  .footer-brand img {
    width: 285px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
  }
}

/* Version 7: Why Aerodyne and Our Approach */
.eyebrow {
  margin: 0 0 0.55rem;
  color: var(--copper-dark);
  font-family: "Montserrat", Arial, sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.why-section {
  padding: 5.5rem 0;
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 110px;
}

.why-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(3rem, 7vw, 7rem);
  align-items: start;
}

.why-heading .section-rule {
  margin-top: 0;
}

.why-heading h2 {
  margin: 0;
  color: var(--navy-deep);
  font-family: "Montserrat", Arial, sans-serif;
  font-size: clamp(2.15rem, 4vw, 3.65rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
  text-transform: uppercase;
}

.why-lead {
  margin: 1.5rem 0 0;
  color: var(--navy);
  font-size: 1.3rem;
  font-weight: 600;
  line-height: 1.45;
}

.why-copy {
  padding-top: 0.35rem;
}

.why-copy p {
  margin: 0 0 1.25rem;
  color: #354459;
  font-size: 1.08rem;
}

.approach-section {
  padding: 5.2rem 0;
  background: white;
  scroll-margin-top: 110px;
}

.light-heading h2 {
  color: var(--navy-deep);
}

.approach-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.35rem;
  margin-top: 2.2rem;
}

.approach-card {
  position: relative;
  min-height: 285px;
  padding: 2rem 1.65rem;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fbfbfa;
  box-shadow: 0 12px 28px rgba(6, 26, 47, 0.07);
}

.approach-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: var(--copper);
}

.approach-number {
  color: rgba(189,101,41,0.45);
  font-family: "Montserrat", Arial, sans-serif;
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1;
}

.approach-card h3 {
  margin: 1.2rem 0 0.8rem;
  color: var(--navy-deep);
  font-family: "Montserrat", Arial, sans-serif;
  font-size: 1.08rem;
  text-transform: uppercase;
}

.approach-card p {
  margin: 0;
  color: #415064;
}

.approach-statement {
  max-width: 850px;
  margin: 3rem auto 0;
  padding-top: 2rem;
  color: var(--navy-deep);
  border-top: 1px solid var(--line);
  font-family: "Montserrat", Arial, sans-serif;
  font-size: clamp(1.25rem, 2.4vw, 1.75rem);
  font-weight: 600;
  line-height: 1.45;
  text-align: center;
}

#about, #capabilities, #contact {
  scroll-margin-top: 110px;
}

@media (max-width: 1080px) {
  .why-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .approach-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 680px) {
  .why-section,
  .approach-section {
    padding: 4rem 0;
  }

  .approach-grid {
    grid-template-columns: 1fr;
  }

  .approach-card {
    min-height: 0;
  }
}