:root {
  --rainbow: linear-gradient(90deg, #e63946, #f4a261 18%, #e9c46a 36%, #2a9d8f 54%, #457b9d 72%, #7b2cbf 88%, #9d4edd);
  --rainbow-weight: 4px;
  --bg-page: #f2f0ef;
  --bg-white: #fff;
  --text: #1a1a1a;
  --text-muted: #5c5c5c;
  --link: #6f42c1;
  --divider: #d8d4d0;
  --font: "Inter", system-ui, -apple-system, sans-serif;
  --max: 68rem;
  --wide: 90rem;
  --pad: clamp(1.5rem, 5vw, 3.5rem);
  --footer-aspect: 5792 / 3776;
  --gap-section: clamp(3rem, 7vw, 4.5rem);
  --gap-card: clamp(1rem, 2.5vw, 1.5rem);
  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.04), 0 6px 20px rgba(0, 0, 0, 0.05);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  line-height: 1.65;
  color: var(--text);
  background: var(--bg-page);
}

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

a {
  color: inherit;
}

.hero-viewport {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  background: #4a3fd9 url("../assets/hero-bg.png") center / cover no-repeat;
  overflow: hidden;
}

.hero-header {
  position: relative;
  z-index: 2;
  padding: clamp(1.5rem, 4vw, 2.5rem) var(--pad) 0;
}

.hero-header__row {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.hero-nav {
  display: flex;
  gap: clamp(2rem, 5vw, 3.5rem);
}

.hero-nav__link {
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.hero-nav__link:hover {
  opacity: 0.85;
}

.nav-toggle {
  display: none;
  margin-right: auto;
  padding: 0.5rem;
  border: 0;
  background: none;
  color: #fff;
  cursor: pointer;
}

.hero-rainbow-rule {
  width: 100vw;
  height: var(--rainbow-weight);
  margin: 0.75rem 0 0 calc(50% - 50vw);
  background: var(--rainbow);
}

.hero-center {
  position: relative;
  z-index: 2;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(2rem, 5vw, 3rem);
  padding: clamp(2rem, 6vw, 4rem) var(--pad);
  text-align: center;
}

.hero-title {
  margin: 0;
  font-size: clamp(3.5rem, 14vw, 8.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  color: #fff;
}

.btn-access,
.btn-go-bmat {
  position: relative;
  display: inline-flex;
  isolation: isolate;
  border-radius: 999px;
  text-decoration: none;
}

.btn-access::before,
.btn-go-bmat::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: var(--rainbow-weight);
  background: var(--rainbow);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  z-index: -1;
}

.btn-access:hover,
.btn-go-bmat:hover {
  opacity: 0.95;
}

.btn-access span {
  padding: 1.125rem 2.5rem;
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 0.25em;
  white-space: nowrap;
}

.intro {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3.5rem, 8vw, 5.5rem) var(--pad) clamp(2.5rem, 6vw, 4rem);
  text-align: center;
}

.intro p {
  margin: 0 0 1.5rem;
  font-size: 1.3125rem;
  font-weight: 700;
  line-height: 1.65;
}

.intro p:last-child {
  margin-bottom: 0;
}

.features {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 0 var(--pad) clamp(4rem, 10vw, 6rem);
}

.features__header {
  margin-bottom: var(--gap-section);
  text-align: center;
}

.features__title {
  margin: 0 0 clamp(2rem, 5vw, 3rem);
}

.features__title-text {
  display: inline-flex;
  flex-direction: column;
  align-items: stretch;
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  background: var(--rainbow);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.features__title-text::after {
  content: "";
  height: var(--rainbow-weight);
  margin-top: 0.35rem;
  background: var(--rainbow);
}

.features__lead {
  max-width: 42rem;
  margin: 0 auto;
  font-size: 1.3125rem;
  font-weight: 500;
  line-height: 1.5;
}

.features__chapters {
  display: flex;
  flex-direction: column;
  gap: var(--gap-section);
}

.features__chapter-title {
  margin: 0 0 1.25rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.features__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap-card);
}

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

.features__cards--single {
  grid-template-columns: 1fr;
}

.feature-card,
.contact-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--bg-white);
  border-radius: 1rem;
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.feature-card {
  padding: 1.5rem 1.5rem 1.25rem;
}

.contact-card {
  align-items: center;
  padding: 2rem 1.75rem 1.75rem;
  text-align: center;
}

.feature-card::before,
.contact-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: var(--rainbow);
}

.feature-card--highlight {
  padding: 1.75rem;
}

.feature-card__icon-wrap,
.contact-card__icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3.25rem;
  height: 3.25rem;
  margin-bottom: 1rem;
  border-radius: 0.75rem;
  background: linear-gradient(var(--bg-white), var(--bg-white)) padding-box, var(--rainbow) border-box;
  border: 2px solid transparent;
}

.feature-card__icon,
.contact-card__icon {
  font-size: 1.25rem;
}

.feature-card__title {
  margin: 0 0 0.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--divider);
  font-size: 1.25rem;
  font-weight: 700;
}

.feature-card__lead,
.feature-card__detail p,
.feature-card__bullets,
.feature-card__detail-list,
.contact-card__text,
.contact-card__address,
.contact__lead {
  font-size: 1.0625rem;
  font-weight: 500;
  line-height: 1.55;
}

.feature-card__lead {
  margin: 0 0 1rem;
}

.feature-card__bullets {
  flex: 1;
  margin: 0 0 1rem;
  padding-left: 1.125rem;
}

.feature-card__bullets li {
  margin-bottom: 0.5rem;
}

.feature-card__bullets li:last-child {
  margin-bottom: 0;
}

.feature-card__bullets strong,
.feature-card__detail strong {
  font-weight: 700;
}

.feature-card__more {
  margin-top: auto;
  border-top: 1px solid var(--divider);
  padding-top: 0.75rem;
}

.feature-card__more summary {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--link);
  cursor: pointer;
  list-style: none;
}

.feature-card__more summary::-webkit-details-marker {
  display: none;
}

.feature-card__more summary::after {
  content: " ↓";
}

.feature-card__more[open] summary::after {
  content: " ↑";
}

.feature-card__detail {
  padding-top: 0.875rem;
}

.feature-card__detail p {
  margin: 0 0 0.875rem;
}

.feature-card__detail p:last-child,
.feature-card__detail-list li:last-child {
  margin-bottom: 0;
}

.feature-card__detail-list {
  margin: 0;
  padding-left: 1.25rem;
}

.feature-card__detail-list li {
  margin-bottom: 0.75rem;
}

.contact {
  scroll-margin-top: 1.5rem;
  padding: clamp(4rem, 10vw, 6rem) var(--pad) clamp(3.5rem, 8vw, 5rem);
}

.contact__inner {
  max-width: 52rem;
  margin: 0 auto;
}

.contact__header {
  margin-bottom: clamp(2rem, 5vw, 3rem);
  text-align: center;
}

.contact__title {
  display: inline-flex;
  flex-direction: column;
  align-items: stretch;
  margin: 0 auto 1.25rem;
  font-size: 1.625rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.contact__title::after {
  content: "";
  height: var(--rainbow-weight);
  margin-top: 0.625rem;
  background: var(--rainbow);
}

.contact__lead {
  max-width: 36rem;
  margin: 0 auto;
}

.contact__channels {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap-card);
}

.contact-card__label {
  margin: 0 0 0.375rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.contact-card__text {
  margin: 0 0 0.75rem;
}

.contact-card__link {
  font-size: clamp(1.125rem, 2.5vw, 1.375rem);
  font-weight: 700;
  color: var(--link);
  text-decoration: none;
}

.contact-card__link:hover {
  text-decoration: underline;
}

.contact-card__address {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-style: normal;
}

.contact-card__org {
  margin-bottom: 0.25rem;
  font-size: 1.125rem;
  font-weight: 700;
}

.partners {
  padding: clamp(3rem, 8vw, 5rem) var(--pad);
  text-align: center;
  background: var(--bg-white);
}

.btn-go-bmat {
  margin-bottom: clamp(3rem, 6vw, 4rem);
}

.btn-go-bmat span {
  padding: 0.75rem 2rem;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.partners__label {
  margin: 0 0 clamp(1.5rem, 4vw, 2.5rem);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #6b6b6b;
}

.partners__logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: clamp(1.5rem, 4vw, 3rem);
  max-width: var(--wide);
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.partners__logos a {
  transition: opacity 0.2s;
}

.partners__logos a:hover {
  opacity: 0.8;
}

.partners__logos img {
  height: 75px;
  width: auto;
  max-width: 160px;
  object-fit: contain;
}

.partners__logo--mrss {
  height: 58px;
}

.site-footer {
  position: relative;
  container-type: size;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  aspect-ratio: var(--footer-aspect);
  overflow: hidden;
  background: var(--bg-white);
}

.site-footer__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: fill;
}

.site-footer__link {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  width: 100%;
  height: 100%;
  text-decoration: none;
}

.site-footer__link:hover {
  opacity: 0.9;
}

.site-footer__wordmark {
  display: inline-block;
  font-family: "Poppins", sans-serif;
  font-size: 35cqw;
  font-weight: 700;
  font-synthesis: none;
  line-height: 0.85;
  white-space: nowrap;
  color: #000;
  text-transform: lowercase;
  transform: translateY(2.5%);
}

@supports not (font-size: 1cqw) {
  .site-footer__wordmark {
    font-size: clamp(5rem, 34vw, 28rem);
  }
}

@media (min-width: 901px) {
  .feature-card--highlight {
    display: grid;
    grid-template-columns: auto 1fr;
    column-gap: 1.75rem;
    align-items: start;
  }

  .feature-card--highlight .feature-card__icon-wrap {
    grid-row: span 2;
    margin-bottom: 0;
  }

  .feature-card--highlight .feature-card__title,
  .feature-card--highlight .feature-card__lead {
    grid-column: 2;
  }

  .feature-card--highlight .feature-card__bullets,
  .feature-card--highlight .feature-card__more {
    grid-column: 1 / -1;
  }
}

@media (max-width: 1100px) {
  .features__cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .hero-nav {
    position: absolute;
    top: calc(100% + 0.75rem);
    right: var(--pad);
    flex-direction: column;
    align-items: flex-end;
    gap: 1rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.25s, transform 0.25s, visibility 0.25s;
  }

  .hero-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
}

@media (max-width: 700px) {
  .features__cards,
  .features__cards--pair,
  .contact__channels {
    grid-template-columns: 1fr;
  }
}