:root {
  --navy-950: #031729;
  --navy-900: #06243b;
  --navy-800: #0b3451;
  --blue-700: #125b7b;
  --teal-600: #16859a;
  --teal-500: #25a6b6;
  --teal-300: #9cb3b6;
  --ice-100: #eaf4f7;
  --ice-50: #f5fafb;
  --slate-700: #334d5c;
  --slate-600: #4d6572;
  --slate-300: #b9c8cf;
  --slate-200: #d5e0e4;
  --slate-100: #edf2f4;
  --white: #ffffff;
  --shadow: 0 18px 48px rgba(3, 23, 41, 0.12);
  --shadow-soft: 0 10px 28px rgba(3, 23, 41, 0.08);
  --radius-lg: 1.25rem;
  --radius-md: 0.8rem;
  --content-width: 90rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 7rem;
}

body {
  margin: 0;
  background: var(--ice-50);
  color: var(--navy-950);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
label:focus-visible {
  outline: 3px solid var(--teal-500);
  outline-offset: 4px;
}

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

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  line-height: 1.15;
  letter-spacing: -0.025em;
}

h1 {
  max-width: 19ch;
  margin-bottom: 1.1rem;
  font-size: clamp(2.25rem, 4.4vw, 4.7rem);
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(1.9rem, 3vw, 3.25rem);
}

h3 {
  font-size: clamp(1.2rem, 1.8vw, 1.45rem);
}

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

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 1000;
  padding: 0.7rem 1rem;
  background: var(--white);
  color: var(--navy-950);
  border-radius: 0.4rem;
  transform: translateY(-180%);
  transition: transform 180ms ease;
}

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

.site-shell {
  min-width: 0;
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(3, 23, 41, 0.97);
  color: var(--white);
  box-shadow: 0 5px 24px rgba(3, 23, 41, 0.2);
  backdrop-filter: blur(10px);
}

.utility-bar {
  min-height: 2.2rem;
  padding: 0.35rem max(1rem, calc((100vw - var(--content-width)) / 2));
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 1rem;
  background: var(--slate-300);
  font-size: 0.78rem;
  letter-spacing: 0.025em;
}

.utility-bar p {
  margin: 0;
}

.utility-bar a {
  font-weight: 700;
}

.utility-bar a:hover {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.header-grid {
  width: min(calc(100% - 2rem), var(--content-width));
  min-height: 5.3rem;
  margin-inline: auto;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 2rem;
}

.brand {
  width: max-content;
  display: grid;
  grid-template-columns: auto auto;
  align-items: center;
  gap: 0.8rem;
}

.brand-mark {
  width: 2.7rem;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 50%;
  background-image: url("./ihmc-logo.png");
  background-size: contain;
  background-repeat: no-repeat;
  color: var(--white);
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.brand-copy {
  display: grid;
  gap: 0.08rem;
}

.brand-copy strong {
  font-size: 1.1rem;
  letter-spacing: 0.015em;
}

.brand-copy small {
  color: var(--slate-300);
  font-size: 0.7rem;
  letter-spacing: 0.03em;
}

.primary-nav {
  justify-self: end;
}

.nav-list,
.submenu,
.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list {
  display: grid;
  grid-auto-flow: column;
  align-items: center;
  gap: 0.2rem;
}

.nav-list>li {
  position: relative;
}

.nav-list>li>a {
  display: block;
  padding: 0.75rem 0.72rem;
  border-radius: 0.5rem;
  color: var(--slate-200);
  font-size: 0.9rem;
  font-weight: 650;
}

.nav-list>li>a:hover,
.nav-list>li>a:focus-visible,
.nav-list>li>a.active {
  background: var(--slate-300);
  color: var(--white);
}

.nav-list .nav-cta {
  margin-left: 0.35rem;
  padding-inline: 1rem;
  background: var(--slate-300);
  color: var(--white);
}

.nav-list .nav-cta:hover,
.nav-list .nav-cta:focus-visible {
  background: var(--slate-300);
}

.submenu {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  min-width: 15.5rem;
  padding: 0.55rem;
  display: grid;
  gap: 0.15rem;
  background: var(--white);
  color: var(--navy-950);
  border: 1px solid var(--slate-200);
  border-radius: 0.7rem;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-0.4rem);
  transition: opacity 160ms ease, transform 160ms ease, visibility 160ms ease;
}

.submenu a {
  display: block;
  padding: 0.72rem 0.8rem;
  border-radius: 0.45rem;
  font-size: 0.88rem;
  font-weight: 650;
}

.submenu a:hover,
.submenu a:focus-visible {
  background: var(--ice-100);
  color: var(--blue-700);
}

.has-submenu:hover .submenu,
.has-submenu:focus-within .submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.menu-toggle,
.menu-button {
  display: none;
}

main {
  min-width: 0;
  display: grid;
}

.hero {
  width: min(100%, var(--content-width));
  margin-inline: auto;
  background: var(--white);
  box-shadow: var(--shadow-soft);
}

.hero-image-wrap {
  overflow: hidden;
  background: var(--navy-950);
}

.hero-image-wrap img {
  width: 100%;
  height: auto;
}

.hero-brief {
  min-width: 0;
  padding: clamp(2rem, 5vw, 4.5rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: clamp(2rem, 5vw, 5rem);
  background:
    linear-gradient(110deg, rgba(234, 244, 247, 0.8), rgba(255, 255, 255, 0.92)),
    radial-gradient(circle at 85% 20%, rgba(37, 166, 182, 0.18), transparent 28%);
}

.hero-brief p:not(.eyebrow) {
  max-width: 66ch;
  margin-bottom: 0;
  color: var(--slate-700);
  font-size: clamp(1rem, 1.2vw, 1.16rem);
}

.eyebrow {
  margin-bottom: 0.65rem;
  color: var(--teal-600);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.hero-actions,
.contact-actions {
  display: grid;
  gap: 0.75rem;
}

.button {
  min-height: 3rem;
  padding: 0.72rem 1.1rem;
  display: inline-grid;
  place-items: center;
  border: 1px solid transparent;
  border-radius: 0.55rem;
  font-size: 0.92rem;
  font-weight: 750;
  text-align: center;
  transition: transform 150ms ease, background 150ms ease, border-color 150ms ease;
}

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

.button-primary {
  background: var(--navy-900);
  color: var(--white);
}

.button-primary:hover {
  background: var(--blue-700);
}

.button-secondary {
  border-color: var(--slate-300);
  background: var(--white);
  color: var(--navy-900);
}

.button-secondary:hover {
  border-color: var(--teal-600);
  color: var(--teal-600);
}

.trust-strip {
  width: min(calc(100% - 2rem), var(--content-width));
  margin: 1.25rem auto 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--navy-900);
  color: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.trust-strip>div {
  min-height: 8rem;
  padding: 1.5rem;
  display: grid;
  align-content: center;
  gap: 0.35rem;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
}

.trust-strip>div:last-child {
  border-right: 0;
}

.trust-strip strong {
  font-size: 1rem;
}

.trust-strip span {
  color: var(--slate-300);
  font-size: 0.88rem;
}

.section {
  width: min(calc(100% - 2rem), var(--content-width));
  margin-inline: auto;
  padding-block: clamp(4.5rem, 8vw, 8rem);
}

.section-heading {
  max-width: 50rem;
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

.section-heading>p:last-child,
.approach-intro>p:not(.eyebrow),
.about-copy p,
.insight-card p {
  color: var(--slate-600);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.service-card {
  min-width: 0;
  min-height: 22rem;
  padding: 1.55rem;
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 0.8rem;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: var(--radius-md);
  box-shadow: 0 7px 20px rgba(3, 23, 41, 0.12);
  transition: transform 170ms ease, box-shadow 170ms ease, border-color 170ms ease;
}

.service-card-1 {
  background-image: linear-gradient(rgba(3, 23, 41, 0.50), rgba(3, 23, 41, 0.78)), url("./sc1.jpg");
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

.service-card-2 {
  background-image: linear-gradient(rgba(3, 23, 41, 0.50), rgba(3, 23, 41, 0.78)), url("./sc2.jpg");
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

.service-card-3 {
  background-image: linear-gradient(rgba(3, 23, 41, 0.50), rgba(3, 23, 41, 0.78)), url("./sc3.jpg");
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

.service-card-4 {
  background-image: linear-gradient(rgba(3, 23, 41, 0.50), rgba(3, 23, 41, 0.78)), url("./sc4.jpg");
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: rgba(117, 215, 226, 0.65);
  box-shadow: var(--shadow-soft);
}

.card-number {
  width: 2.6rem;
  height: 2.6rem;
  display: grid;
  place-items: center;
  background: var(--ice-100);
  color: var(--teal-600);
  border-radius: 50%;
  font-size: 0.8rem;
  font-weight: 800;
}

.service-card h3,
.service-card p {
  margin-bottom: 0;
}

.service-card p {
  color: var(--slate-100);
  font-size: 0.94rem;
  text-shadow: 0 1px 2px rgba(3, 23, 41, 0.45);
}

.service-card a,
.insight-card a,
.text-link {
  color: var(--teal-600);
  font-size: 0.9rem;
  font-weight: 800;
}

.service-card a {
  color: #9fe8ef;
}

.service-card a:hover,
.insight-card a:hover,
.text-link:hover {
  text-decoration: underline;
  text-underline-offset: 0.25em;
}

.approach-section {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.45fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: start;
  border-top: 1px solid var(--slate-200);
}

.approach-intro {
  position: sticky;
  top: 8rem;
}

.pathway-grid {
  margin: 0;
  padding: 0;
  display: grid;
  list-style: none;
  counter-reset: pathway;
}

.pathway-grid li {
  padding: 1.35rem 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.2rem;
  border-bottom: 1px solid var(--slate-200);
}

.pathway-grid li:first-child {
  border-top: 1px solid var(--slate-200);
}

.pathway-grid li>span {
  width: 2.65rem;
  height: 2.65rem;
  display: grid;
  place-items: center;
  background: var(--navy-900);
  color: var(--white);
  border-radius: 0.55rem;
  font-weight: 800;
}

.pathway-grid h3 {
  margin-bottom: 0.35rem;
}

.pathway-grid p {
  margin-bottom: 0;
  color: var(--slate-600);
}

.questions-section {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(17rem, 0.6fr);
  gap: 1.2rem;
}

.questions-panel,
.insight-card {
  border-radius: var(--radius-lg);
}

.questions-panel {
  padding: clamp(2rem, 5vw, 4rem);
  background: var(--navy-900);
  color: var(--white);
}

.questions-panel .eyebrow {
  color: #75d7e2;
}

.question-grid {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.question-grid p {
  min-height: 7.5rem;
  margin: 0;
  padding: 1.35rem 1.35rem 1.35rem 0;
  display: grid;
  align-content: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--slate-200);
}

.question-grid p:nth-child(odd) {
  padding-right: 1.8rem;
  border-right: 1px solid rgba(255, 255, 255, 0.15);
}

.question-grid p:nth-child(even) {
  padding-left: 1.8rem;
}

.insight-card {
  padding: 2rem;
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  background: var(--teal-300);
  border: 1px solid rgba(22, 133, 154, 0.22);
}

.insight-card h3 {
  font-size: 1.6rem;
}

.about-section {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2.5rem, 7vw, 7rem);
  align-items: start;
}

.about-highlights {
  display: grid;
  gap: 0.8rem;
}

.about-highlights>div {
  padding: 1.25rem 1.4rem;
  display: grid;
  gap: 0.25rem;
  background: var(--white);
  border-left: 4px solid var(--teal-600);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  box-shadow: 0 6px 18px rgba(3, 23, 41, 0.05);
}

.about-highlights span {
  color: var(--slate-600);
  font-size: 0.91rem;
}

.contact-section {
  width: min(calc(100% - 2rem), var(--content-width));
  margin: 0 auto clamp(4rem, 7vw, 7rem);
  padding: clamp(2rem, 5vw, 4rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  background:
    linear-gradient(115deg, rgba(3, 23, 41, 0.98), rgba(11, 52, 81, 0.95)),
    radial-gradient(circle at 90% 20%, rgba(37, 166, 182, 0.35), transparent 30%);
  color: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.contact-section .eyebrow {
  color: #75d7e2;
}

.contact-section h2 {
  max-width: 21ch;
}

.contact-section p:not(.eyebrow) {
  max-width: 64ch;
  margin-bottom: 0;
  color: var(--slate-200);
}

.button-light {
  background: var(--white);
  color: var(--navy-950);
}

.button-light:hover {
  background: var(--ice-100);
}

.contact-actions p {
  max-width: 17rem;
  color: var(--slate-300) !important;
  font-size: 0.76rem;
  text-align: center;
}

.site-footer {
  background: var(--navy-950);
  color: var(--white);
}

.footer-grid {
  width: min(calc(100% - 2rem), var(--content-width));
  margin-inline: auto;
  padding-block: 4rem;
  display: grid;
  grid-template-columns: minmax(16rem, 1.6fr) repeat(3, minmax(9rem, 0.65fr));
  gap: 2.5rem;
}

.brand-footer {
  margin-bottom: 1.2rem;
}

.footer-brand>p {
  max-width: 38ch;
  color: var(--slate-300);
  font-size: 0.9rem;
}

.site-footer h2 {
  margin-bottom: 1rem;
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-footer ul {
  display: grid;
  gap: 0.55rem;
}

.site-footer li,
.site-footer li a {
  color: var(--slate-300);
  font-size: 0.88rem;
}

.site-footer li a:hover {
  color: var(--white);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.footer-bottom {
  width: min(calc(100% - 2rem), var(--content-width));
  margin-inline: auto;
  padding: 1.1rem 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--slate-300);
  font-size: 0.76rem;
}

.footer-bottom p {
  margin: 0;
}

@media (max-width: 1040px) {
  .utility-bar {
    padding-inline: 1rem;
  }

  .header-grid {
    grid-template-columns: auto auto;
    justify-content: space-between;
  }

  .menu-button {
    width: 2.8rem;
    height: 2.8rem;
    justify-self: end;
    display: grid;
    place-content: center;
    gap: 0.28rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 0.5rem;
    cursor: pointer;
  }

  .menu-button span:not(.sr-only) {
    width: 1.25rem;
    height: 2px;
    display: block;
    background: var(--white);
  }

  .primary-nav {
    grid-column: 1 / -1;
    justify-self: stretch;
    display: none;
    padding-bottom: 1rem;
  }

  .menu-toggle:checked~.primary-nav {
    display: block;
  }

  .nav-list {
    grid-auto-flow: row;
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

  .nav-list>li>a {
    padding: 0.8rem 0.9rem;
  }

  .nav-list .nav-cta {
    margin-left: 0;
  }

  .submenu {
    position: static;
    min-width: 0;
    margin: 0 0 0.4rem 1rem;
    padding: 0.35rem;
    background: rgba(255, 255, 255, 0.06);
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.08);
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    display: none;
  }

  .has-submenu:hover .submenu,
  .has-submenu:focus-within .submenu {
    display: grid;
  }

  .submenu a:hover,
  .submenu a:focus-visible {
    background: rgba(255, 255, 255, 0.09);
    color: var(--white);
  }

  .hero-brief {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .hero-actions {
    grid-template-columns: repeat(2, max-content);
  }

  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .service-card {
    min-height: 18rem;
  }

  .questions-section {
    grid-template-columns: 1fr;
  }

  .insight-card {
    min-height: 17rem;
  }

  .footer-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 800px) {
  .utility-bar {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 0;
    text-align: center;
  }

  .utility-bar p {
    display: none;
  }

  .brand-copy small {
    display: none;
  }

  .hero {
    width: 100%;
  }

  .hero-image-wrap {
    overflow: hidden;
  }

  .hero-image-wrap img {
    width: 100%;
    min-width: 0;
    height: auto;
  }

  .hero-brief {
    padding: 2.2rem 1rem 2.6rem;
  }

  .hero-actions {
    grid-template-columns: 1fr;
  }

  .trust-strip {
    grid-template-columns: 1fr;
  }

  .trust-strip > div {
    min-height: 6.5rem;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  }

  .trust-strip > div:last-child {
    border-bottom: 0;
  }



  .card-grid,
  .approach-section,
  .about-section,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .approach-intro {
    position: static;
  }

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

  .question-grid p,
  .question-grid p:nth-child(odd),
  .question-grid p:nth-child(even) {
    min-height: auto;
    padding: 1.2rem 0;
    border-right: 0;
  }

  .contact-actions {
    justify-items: start;
  }

  .contact-actions p {
    text-align: left;
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 500px) {
  h1 {
    font-size: clamp(2rem, 10vw, 2.5rem);
  }

  .header-grid {
    width: min(calc(100% - 1.2rem), var(--content-width));
  }

  .brand-mark {
    width: 2.4rem;
    background-image: url("./ihmc-logo.png");
    background-size: contain;
    background-repeat: no-repeat;
  }

  .brand-copy strong {
    font-size: 1rem;
  }

  .section {
    width: min(calc(100% - 1.2rem), var(--content-width));
    padding-block: 4rem;
  }

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

  .service-card {
    min-height: auto;
  }

  .contact-section,
  .trust-strip,
  .footer-grid,
  .footer-bottom {
    width: min(calc(100% - 1.2rem), var(--content-width));
  }

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

  .footer-bottom {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}