:root {
  --ink: #172029;
  --muted: #5d6a73;
  --line: #dfe5e8;
  --paper: #ffffff;
  --soft: #f5f7f8;
  --brand: #24a6a6;
  --brand-dark: #157878;
  --accent: #e1563f;
  --night: #111820;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

body {
  margin: 0;
  background: var(--paper);
}

a {
  color: var(--brand-dark);
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 10;
  background: var(--paper);
  color: var(--ink);
  padding: .75rem 1rem;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  align-items: center;
  background: rgba(255, 255, 255, .94);
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 1rem;
  grid-template-columns: auto 1fr auto;
  left: 0;
  padding: .9rem clamp(1rem, 4vw, 2.5rem);
  position: sticky;
  right: 0;
  top: 0;
  z-index: 3;
}

.brand {
  display: inline-flex;
}

.site-nav {
  display: flex;
  gap: clamp(.75rem, 2vw, 1.5rem);
  justify-content: center;
}

.site-nav a,
.footer nav a {
  color: var(--ink);
  font-size: .95rem;
  text-decoration: none;
}

.site-nav a:hover,
.footer nav a:hover {
  color: var(--brand-dark);
}

.header-cta,
.button {
  align-items: center;
  background: var(--brand);
  border-radius: 6px;
  color: #ffffff;
  display: inline-flex;
  font-weight: 700;
  justify-content: center;
  padding: .8rem 1rem;
  text-decoration: none;
}

.button.secondary {
  background: var(--night);
}

.hero {
  background:
    linear-gradient(90deg, rgba(17, 24, 32, .88), rgba(17, 24, 32, .66), rgba(17, 24, 32, .2)),
    url("/marketing-assets/images/serious-email-studio-hero-bg-v2.png") center / cover;
  color: #ffffff;
  min-height: min(780px, calc(100vh - 68px));
  padding: clamp(5rem, 12vw, 9rem) clamp(1rem, 5vw, 4rem);
}

.hero-content {
  max-width: 760px;
}

.eyebrow {
  color: var(--brand-dark);
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: .08em;
  margin: 0 0 .75rem;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #8ff0ea;
}

h1,
h2,
h3 {
  line-height: 1.08;
  margin: 0;
}

h1 {
  font-size: clamp(2.6rem, 7vw, 5.6rem);
  max-width: 11ch;
}

.hero p {
  color: rgba(255, 255, 255, .9);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  max-width: 720px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  margin-top: 1.8rem;
}

.studio-features {
  background:
    linear-gradient(90deg, rgba(2, 7, 17, .03) 1px, transparent 1px),
    linear-gradient(rgba(2, 7, 17, .035) 1px, transparent 1px),
    #f4f6f1;
  background-size: 72px 72px;
  color: #07111f;
  overflow: hidden;
  padding: clamp(4.5rem, 8vw, 7rem) 2rem;
  position: relative;
}

.studio-features::before {
  background: linear-gradient(90deg, transparent, rgba(183, 242, 90, .9), transparent);
  content: "";
  height: 1px;
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
}

.studio-features__inner {
  display: grid;
  gap: clamp(2.5rem, 6vw, 6rem);
  grid-template-columns: minmax(220px, .34fr) minmax(0, 1fr);
  margin: 0 auto;
  max-width: var(--max);
  position: relative;
  z-index: 1;
}

.studio-features__intro {
  align-self: start;
  position: sticky;
  top: 104px;
}

.studio-features__eyebrow {
  color: #406000;
  display: block;
  font-size: .75rem;
  font-weight: 900;
  letter-spacing: .18em;
  line-height: 1;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.studio-features__intro h2 {
  color: #07111f;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: clamp(3rem, 7vw, 6.2rem);
  font-weight: 900;
  letter-spacing: 0;
  line-height: .9;
  margin: 0;
}

.studio-features__intro p {
  color: rgba(7, 17, 31, .72);
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  line-height: 1.5;
  margin: 1.2rem 0 0;
  max-width: 22rem;
}

.studio-features__list {
  border-top: 1px solid rgba(7, 17, 31, .24);
  display: grid;
}

.studio-features__item {
  border-bottom: 1px solid rgba(7, 17, 31, .18);
  column-gap: clamp(1.25rem, 3vw, 2.5rem);
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  padding: clamp(2rem, 5vw, 3.6rem) 0;
  row-gap: 1rem;
}

.studio-features__item span {
  color: #5f8a00;
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  font-weight: 900;
  line-height: 1;
}

.studio-features__item h3 {
  color: #07111f;
  font-size: clamp(1.65rem, 3.8vw, 3.4rem);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1;
  margin: 0;
  max-width: 900px;
}

.studio-features__item p {
  color: rgba(7, 17, 31, .72);
  font-size: clamp(1rem, 1.6vw, 1.18rem);
  grid-column: 2;
  line-height: 1.55;
  margin: 0;
  max-width: 760px;
}

.band {
  padding: clamp(3rem, 8vw, 6rem) clamp(1rem, 5vw, 4rem);
}

.band.soft {
  background: var(--soft);
}

.band.dark {
  background: var(--night);
  color: #ffffff;
}

.band-inner {
  margin: 0 auto;
  max-width: var(--max);
}

.section-head {
  margin-bottom: 2rem;
  max-width: 760px;
}

.section-head h2,
.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3.6rem);
  max-width: 14ch;
}

.section-head p,
.lede {
  color: var(--muted);
  font-size: 1.1rem;
}

.dark .section-head p,
.dark .lede {
  color: rgba(255, 255, 255, .78);
}

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

.tile {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1.4rem;
}

.soft .tile {
  background: #ffffff;
}

.dark .tile {
  background: rgba(255, 255, 255, .08);
  border-color: rgba(255, 255, 255, .16);
}

.tile h3 {
  font-size: 1.2rem;
  margin-bottom: .5rem;
}

.tile p {
  color: var(--muted);
  margin: 0;
}

.dark .tile p {
  color: rgba(255, 255, 255, .76);
}

.split {
  align-items: center;
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

.screen-frame {
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 24px 80px rgba(17, 24, 32, .16);
  overflow: hidden;
}

.page-shell {
  margin: 0 auto;
  max-width: var(--max);
  padding: clamp(3rem, 8vw, 6rem) clamp(1rem, 5vw, 4rem);
}

.page-hero {
  margin-bottom: 2.2rem;
  max-width: 850px;
}

.prose {
  max-width: 820px;
}

.prose h2 {
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  margin: 2.5rem 0 .8rem;
}

.prose h3 {
  font-size: 1.3rem;
  margin: 1.8rem 0 .5rem;
}

.prose p,
.prose li {
  color: var(--muted);
  font-size: 1.05rem;
}

.prose a {
  font-weight: 700;
}

.feature-video {
  background: #0e171c;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 24px 80px rgba(17, 24, 32, .18);
  margin: 2rem 0 2.8rem;
  overflow: hidden;
}

.feature-video video {
  aspect-ratio: 16 / 9;
  background: #0e171c;
  display: block;
  width: 100%;
}

.article-date {
  color: var(--muted);
  margin-top: 1rem;
}

.post-list {
  display: grid;
  gap: 1rem;
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
}

.post-list a {
  color: var(--ink);
  display: block;
  text-decoration: none;
}

.post-list h2 {
  font-size: 1.4rem;
  margin-bottom: .25rem;
}

.site-footer {
  background: var(--night);
  color: #ffffff;
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr auto;
  padding: 2.5rem clamp(1rem, 5vw, 4rem);
}

.site-footer p {
  color: rgba(255, 255, 255, .72);
  max-width: 460px;
}

.site-footer nav {
  display: grid;
  gap: .6rem;
}

.site-footer a {
  color: rgba(255, 255, 255, .86);
}

@media (max-width: 820px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .site-nav {
    flex-wrap: wrap;
    grid-column: 1 / -1;
    gap: .45rem .75rem;
    justify-content: flex-start;
    overflow-x: visible;
  }

  .site-nav a {
    flex: 0 1 auto;
    font-size: .88rem;
    line-height: 1.2;
  }

  .header-cta {
    grid-column: 1 / -1;
    width: 100%;
  }

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

  .hero {
    background:
      linear-gradient(180deg, rgba(17, 24, 32, .94), rgba(17, 24, 32, .86)),
      url("/marketing-assets/images/serious-email-studio-hero-bg-v2.png") center top / cover;
    min-height: auto;
  }

  .studio-features {
    padding: 4rem 1.25rem;
  }

  .studio-features__inner {
    gap: 2.5rem;
    grid-template-columns: 1fr;
  }

  .studio-features__intro {
    position: static;
  }

  .studio-features__intro h2 {
    font-size: clamp(3.25rem, 18vw, 5rem);
  }

  .studio-features__item {
    grid-template-columns: 1fr;
  }

  .studio-features__item p {
    grid-column: 1;
  }
}