* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #f7f6f2;
  color: #111;
  font-family:
    Inter,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Arial,
    sans-serif;
  line-height: 1.6;
}

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


/* =========================
   NAVIGATION
========================= */

.nav {
  max-width: 1220px;
  margin: 0 auto;
  padding: 30px 42px;

  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-size: 20px;
  font-weight: 750;
  letter-spacing: -0.03em;
  white-space: nowrap;
}

nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

nav a {
  font-size: 15px;
  white-space: nowrap;
  transition: opacity 0.2s ease;
}

nav a:hover {
  opacity: 0.55;
}


/* =========================
   HERO
========================= */

.hero {
  max-width: 1220px;
  margin: 0 auto;

  /*
    Much smaller gap between
    header and hero content
  */
  padding: 60px 42px 100px;

  display: flex;
  flex-direction: column;
}

.eyebrow {
  margin-bottom: 28px;

  font-size: 12px;
  font-weight: 800;

  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1 {
  max-width: 1080px;

  margin: 0;

  font-size: clamp(58px, 7.2vw, 108px);

  line-height: 0.94;

  letter-spacing: -0.065em;

  font-weight: 750;
}

.hero-text {
  max-width: 800px;

  margin: 42px 0 0;

  font-size: 22px;

  line-height: 1.55;

  color: #555;
}


/* =========================
   BUTTONS
========================= */

.actions {
  display: flex;

  gap: 14px;

  flex-wrap: wrap;

  margin-top: 34px;
}

.button {
  display: inline-flex;

  align-items: center;
  justify-content: center;

  min-height: 56px;

  padding: 0 25px;

  border-radius: 999px;

  font-weight: 700;

  border: 1px solid #111;
}

.button.primary {
  background: #111;
  color: #fff;
}

.button.secondary {
  background: transparent;
}

.button:hover {
  opacity: 0.8;
}


/* =========================
   BADGES
========================= */

.badges {
  display: flex;

  align-items: center;

  gap: 10px;

  flex-wrap: wrap;

  margin-top: 38px;
}

.badges span {
  display: inline-flex;

  align-items: center;

  border: 1px solid #d6d4cd;

  border-radius: 999px;

  padding: 8px 15px;

  font-size: 13px;

  line-height: 1.3;
}


/* =========================
   SECTIONS
========================= */

.section {
  max-width: 1220px;

  margin: 0 auto;

  padding: 120px 42px;

  border-top: 1px solid #dddcd6;

  display: grid;

  grid-template-columns: 250px 1fr;

  gap: 70px;
}

.section-content {
  max-width: 850px;
}

.section h2 {
  margin: 0 0 30px;

  font-size: clamp(40px, 5vw, 70px);

  line-height: 1;

  letter-spacing: -0.05em;
}

.section-content > p {
  max-width: 760px;

  font-size: 19px;

  color: #555;
}


/* =========================
   AI CARDS
========================= */

.cards {
  display: grid;

  grid-template-columns: repeat(2, 1fr);

  gap: 14px;

  margin-top: 45px;
}

.card,
.contribution-card {
  padding: 30px;

  border: 1px solid #d8d7d1;

  border-radius: 18px;

  background: rgba(255, 255, 255, 0.28);

  transition:
    transform 0.2s ease,
    border-color 0.2s ease;
}

.card:hover,
.contribution-card:hover {
  transform: translateY(-3px);

  border-color: #999;
}

.card .number {
  font-size: 12px;

  font-weight: 800;

  letter-spacing: 0.12em;
}

.card h3,
.project h3,
.writing-item h3,
.contribution-card h3 {
  margin: 28px 0 10px;

  font-size: 23px;

  letter-spacing: -0.03em;
}

.card p,
.project p,
.writing-item p,
.contribution-card p {
  color: #5b5b58;

  margin: 0;
}


/* =========================
   TEXT LINKS
========================= */

.text-link {
  display: inline-block;

  margin-top: 30px;

  font-weight: 750;

  border-bottom: 1px solid #111;

  padding-bottom: 3px;
}

.text-link:hover {
  opacity: 0.55;
}


/* =========================
   PROJECTS
========================= */

.project {
  padding: 36px 0;

  border-top: 1px solid #d8d7d1;

  display: grid;

  grid-template-columns: 1fr 1.5fr;

  gap: 45px;
}

.project h3 {
  margin-top: 15px;
}


/* =========================
   WRITING
========================= */

.writing-list {
  margin-top: 45px;

  border-top: 1px solid #d8d7d1;
}

.writing-item {
  padding: 30px 0;

  border-bottom: 1px solid #d8d7d1;
}

.writing-item h3 {
  margin-top: 12px;
}


/* =========================
   CONTRIBUTION
========================= */

.contribution-grid {
  display: grid;

  grid-template-columns: repeat(3, 1fr);

  gap: 14px;

  margin-top: 45px;
}

.contribution-card h3 {
  margin-top: 0;
}


/* =========================
   CONTACT
========================= */

.contact {
  padding-bottom: 150px;
}

.large {
  margin-top: 45px;
}


/* =========================
   FOOTER
========================= */

footer {
  max-width: 1220px;

  margin: 0 auto;

  padding: 28px 42px 45px;

  display: flex;

  justify-content: space-between;

  border-top: 1px solid #dddcd6;

  font-size: 13px;

  color: #666;
}


/* =========================
   TABLET
========================= */

@media (max-width: 1000px) {

  .nav {
    padding: 28px 30px;
  }

  nav {
    gap: 18px;
  }

  nav a {
    font-size: 14px;
  }

  .hero {
    padding: 55px 30px 90px;
  }

  .section {
    padding: 100px 30px;

    gap: 45px;
  }
}


/* =========================
   MOBILE
========================= */

@media (max-width: 800px) {

  .nav {
    padding: 24px;
  }

  nav {
    display: none;
  }

  .hero {
    padding: 50px 24px 80px;
  }

  h1 {
    font-size: clamp(52px, 14vw, 78px);
  }

  .hero-text {
    font-size: 19px;

    margin-top: 34px;
  }

  .actions {
    margin-top: 30px;
  }

  .badges {
    margin-top: 30px;
  }

  .section {
    padding: 85px 24px;

    grid-template-columns: 1fr;

    gap: 30px;
  }

  .cards,
  .contribution-grid {
    grid-template-columns: 1fr;
  }

  .project {
    grid-template-columns: 1fr;

    gap: 15px;
  }

  footer {
    padding: 25px 24px 35px;

    flex-direction: column;

    gap: 8px;
  }
}