:root {
  --color-accent: #078ea5;
  --color-accent-dark: #127c93;
  --color-dark: #04274e;
  --color-footer: #eaf9fb;
  --color-orange: #fc8108;
  --color-text: #212529;
  --content-width: 1180px;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--color-text);
}

* {
  box-sizing: border-box;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-size: 1rem;
  line-height: 1.55;
  background: #fff;
}

a {
  color: var(--color-accent);
}

a:hover,
a:focus-visible {
  color: var(--color-dark);
}

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

h1,
h2,
h3,
h4,
h5 {
  color: var(--color-accent);
  line-height: 1.2;
}

h1 {
  margin: 0 0 1.5rem;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
}

.site-header {
  width: min(var(--content-width), calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 1.5rem 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  color: var(--color-accent);
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
}

.brand img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  box-shadow: 10px 0 20px -9px var(--color-orange);
}

.brand span {
  width: 245px;
  font-size: 1.2rem;
}

.page-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 3rem;
  width: min(var(--content-width), calc(100% - 2rem));
  margin: 0 auto;
}

.main-navigation,
.main-navigation ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.main-navigation > li {
  margin-bottom: 0.8rem;
}

.main-navigation a {
  display: inline-block;
  color: var(--color-accent);
  text-decoration: none;
}

.main-navigation a[aria-current="page"] {
  border-bottom: 2px solid var(--color-accent);
}

.main-navigation ul {
  margin-top: 0.25rem;
  padding-left: 1rem;
  font-size: 0.9rem;
}

.main-navigation ul li {
  margin: 0.2rem 0;
}

.main-content {
  min-width: 0;
}

.layouts {
  max-width: 850px;
}

.layout-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.layout-column {
  grid-column: span var(--span);
  min-width: 0;
}

.blocks {
  max-width: 100%;
}

.blocks > * {
  margin: 0 0 1.5rem;
}

.blocks p {
  margin-top: 0;
}

.blocks h2 {
  font-size: 1.125rem;
}

.button-block {
  margin: 0.5rem 0;
}

.button-block--small {
  margin-top: 0.25rem;
  margin-bottom: 1.5rem;
}

.blocks > p:has(+ .button-block--small) {
  margin-bottom: 0.25rem;
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0.65rem 1rem;
  border: 2px solid var(--color-accent);
  border-radius: 0.25rem;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease;
}

.button--small {
  min-height: 1.75rem;
  padding: 0.2rem 0.5rem;
  font-size: 0.875rem;
}

.button--filled {
  color: #fff;
  background: var(--color-accent);
}

.button--filled:hover,
.button--filled:focus-visible {
  color: #fff;
  background: var(--color-dark);
  border-color: var(--color-dark);
}

.button--outline {
  color: var(--color-accent);
  background: transparent;
}

.button--outline:hover,
.button--outline:focus-visible {
  color: #fff;
  background: var(--color-accent);
}

.blocks figure {
  margin-left: 0;
}

.blocks .book-cover {
  max-width: 330px;
}

.legal-nav {
  display: flex;
  justify-content: flex-end;
  gap: 1.5rem;
  margin-top: 4rem;
  padding: 1.5rem 0;
}

.legal-nav a {
  text-decoration: none;
}

.faq-list {
  max-width: 850px;
}

.faq-list details {
  border-bottom: 1px solid #c9e6eb;
}

.faq-list summary,
.accordion-block summary,
.literature summary {
  padding: 1rem;
  color: var(--color-accent);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
}

.faq-list details[open],
.accordion-block[open],
.literature[open] {
  background: var(--color-footer);
}

.faq-answer,
.accordion-block__content,
.literature-content {
  padding: 0 1rem 1rem;
}

.accordion-block {
  max-width: 850px;
  margin-bottom: 0;
  border-bottom: 1px solid #c9e6eb;
}

.literature {
  max-width: 850px;
  margin-top: 2rem;
  border: 1px solid #c9e6eb;
  border-radius: 0.25rem;
}

.page-intro,
.talks-list,
.press-sections {
  max-width: 850px;
}

.page-intro {
  margin-bottom: 2.5rem;
}

.entry-year {
  margin: 3.5rem 0 0;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-accent);
  color: var(--color-dark);
}

.entry-year:first-child {
  margin-top: 0;
}

.talk-entry {
  padding: 1.5rem 0;
  border-bottom: 1px solid #c9e6eb;
}

.talk-entry h3 {
  margin: 0 0 0.75rem;
  color: var(--color-accent);
  font-size: 1.15rem;
}

.entry-meta {
  display: grid;
  gap: 0.4rem 1.5rem;
  margin: 0;
}

.entry-meta div {
  display: grid;
  grid-template-columns: 7rem 1fr;
}

.entry-meta dt {
  font-weight: 700;
}

.entry-meta dd {
  margin: 0;
}

.entry-description {
  margin-top: 0.75rem;
}

.entry-description > :last-child {
  margin-bottom: 0;
}

.press-section {
  margin-top: 3rem;
}

.press-section:first-child {
  margin-top: 0;
}

.press-section > h2 {
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-accent);
}

.press-date-group {
  padding: 0.75rem 0;
}

.press-date-group.is-new-year {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid #c9e6eb;
}

.press-date-group h3 {
  margin: 0 0 0.5rem;
  color: var(--color-dark);
  font-size: 1rem;
}

.press-date-group ul {
  margin: 0;
  padding-left: 1.25rem;
}

.press-date-group li + li {
  margin-top: 0.45rem;
}

.press-date-group li span {
  margin-left: 0.25rem;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-evenly;
  gap: 3rem;
  margin-top: 1rem;
  padding: 2.5rem max(1rem, calc((100% - var(--content-width)) / 2));
  background: var(--color-footer);
}

.site-footer img {
  max-height: 90px;
  width: auto;
}

.mobile-navigation {
  display: none;
}

@media (min-width: 800px) {
  .site-header {
    padding-left: 0;
  }
}

@media (max-width: 799px) {
  .site-header {
    padding-top: 1rem;
  }

  .brand img {
    width: 76px;
    height: 76px;
  }

  .brand span {
    width: min(230px, calc(100vw - 125px));
    font-size: 1.05rem;
  }

  .page-layout {
    display: block;
  }

  .layout-column {
    grid-column: 1 / -1;
  }

  .desktop-navigation {
    display: none;
  }

  .mobile-navigation {
    display: block;
    margin-bottom: 2rem;
  }

  .mobile-navigation summary {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 3rem;
    list-style: none;
    color: var(--color-accent);
    cursor: pointer;
  }

  .mobile-navigation summary::-webkit-details-marker {
    display: none;
  }

  .mobile-navigation__icon,
  .mobile-navigation__icon::before,
  .mobile-navigation__icon::after {
    width: 2rem;
    height: 3px;
    border-radius: 999px;
    background: var(--color-accent);
  }

  .mobile-navigation__icon {
    position: relative;
    display: block;
  }

  .mobile-navigation__icon::before,
  .mobile-navigation__icon::after {
    position: absolute;
    left: 0;
    content: "";
  }

  .mobile-navigation__icon::before {
    top: -8px;
  }

  .mobile-navigation__icon::after {
    top: 8px;
  }

  .mobile-navigation nav {
    padding: 1rem 0;
    text-align: left;
  }

  .mobile-navigation .main-navigation > li,
  .mobile-navigation .main-navigation ul li {
    margin: 0;
  }

  .mobile-navigation .main-navigation a {
    display: flex;
    align-items: center;
    min-height: 2.75rem;
    width: 100%;
    padding: 0.55rem 0.75rem;
    font-size: 1.15rem;
  }

  .mobile-navigation .main-navigation ul {
    margin-top: 0;
    padding-left: 1rem;
    font-size: 1rem;
  }

  .mobile-navigation .main-navigation ul a {
    min-height: 2.75rem;
    font-size: 1.05rem;
  }

  .entry-meta div {
    display: block;
  }

  .entry-meta dt {
    margin-top: 0.4rem;
  }

  .site-footer {
    flex-direction: column;
  }
}