:root {
  --ink: #111111;
  --paper: #f6f4ef;
  --paper-2: #ebe8e0;
  --accent: #ff5b35;
  --muted: #686762;
  --line: rgba(17, 17, 17, .16);
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.shell { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }
.nav {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.mark {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: var(--accent);
  border-radius: 12px;
  font-weight: 900;
  font-size: 30px;
  line-height: 1;
  letter-spacing: -.09em;
  padding-right: 2px;
}
.nav-links { display: flex; align-items: center; gap: clamp(18px, 3vw, 42px); font-size: .8rem; font-weight: 750; text-transform: uppercase; letter-spacing: .11em; }
.nav-links > a { padding-block: 9px; border-bottom: 2px solid transparent; }
.nav-links > a:hover, .nav-links > a[aria-current="page"] { border-color: var(--accent); }
.nav-curated { position: relative; }
.nav-curated summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-block: 9px;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  list-style: none;
}
.nav-curated summary::-webkit-details-marker { display: none; }
.nav-curated summary::after {
  content: "";
  width: 6px;
  height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  transition: transform .2s ease;
}
.nav-curated[open] summary::after { transform: rotate(225deg) translate(-1px, -1px); }
.nav-curated.is-current summary { border-color: var(--accent); }
.nav-curated-menu {
  position: absolute;
  z-index: 20;
  top: calc(100% + 7px);
  right: 0;
  min-width: 190px;
  padding: 9px;
  border-radius: 14px;
  background: var(--ink);
  box-shadow: 0 18px 45px rgba(17, 17, 17, .16);
}
.nav-curated-menu a {
  display: block;
  padding: 10px 12px;
  color: white;
  border: 0;
  border-radius: 8px;
  letter-spacing: .08em;
  white-space: nowrap;
}
.nav-curated-menu a:hover, .nav-curated-menu a:focus-visible, .nav-curated-menu a[aria-current="page"] {
  color: white;
  background: rgba(255, 255, 255, .1);
}
.eyebrow { margin: 0 0 25px; color: var(--accent); font-size: .77rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.blog-hero { padding-block: clamp(84px, 12vw, 150px) clamp(64px, 9vw, 105px); }
.blog-hero h1 { max-width: 950px; margin: 0; font-size: clamp(4.2rem, 10vw, 9.2rem); font-weight: 860; line-height: .87; letter-spacing: -.078em; }
.blog-hero h1 span { color: var(--accent); }
.hero-foot { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: end; margin-top: 54px; }
.hero-foot p { max-width: 42ch; margin: 0; color: var(--muted); font-size: 1.05rem; }
.hero-count { justify-self: end; font-size: .77rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.featured { background: var(--ink); color: white; }
.featured-link { min-height: 560px; padding-block: clamp(55px, 8vw, 95px); display: grid; grid-template-columns: 1fr 2fr; gap: 50px; align-content: space-between; }
.feature-meta { color: var(--accent); font-size: .77rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.featured-copy { grid-column: 2; }
.featured h2 { max-width: 9ch; margin: 0 0 30px; font-size: clamp(3.7rem, 7vw, 7.3rem); line-height: .9; letter-spacing: -.07em; }
.featured p { max-width: 45ch; margin: 0 0 34px; color: rgba(255,255,255,.65); font-size: 1.05rem; }
.read-link { display: inline-flex; align-items: center; gap: 13px; padding-bottom: 7px; border-bottom: 1px solid currentColor; font-weight: 750; }
.read-link span { color: var(--accent); transition: transform .2s ease; }
.featured-link:hover .read-link span, .card:hover .card-arrow { transform: translateX(5px); }
.library { padding-block: clamp(85px, 11vw, 145px); }
.library-head { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 42px; }
.library h2 { margin: 0; font-size: clamp(2.6rem, 5vw, 5.4rem); line-height: .95; letter-spacing: -.06em; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 48px; }
.filter {
  padding: 10px 15px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font-size: .81rem;
  font-weight: 750;
}
.filter:hover, .filter.active { background: var(--ink); color: white; }
.article-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); }
.card { min-height: 390px; padding: 30px 32px 32px 0; border-bottom: 1px solid var(--line); display: flex; flex-direction: column; transition: background .25s ease, padding .25s ease; }
.card:nth-child(even) { border-left: 1px solid var(--line); padding-left: 32px; }
.card:hover { background: white; padding-left: 32px; }
.card[hidden] { display: none; }
.card-top { display: flex; justify-content: space-between; gap: 20px; color: var(--muted); font-size: .75rem; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
.card h3 { max-width: 12ch; margin: auto 0 20px; font-size: clamp(2.25rem, 4vw, 4.2rem); line-height: .96; letter-spacing: -.055em; }
.card-bottom { display: flex; justify-content: space-between; align-items: end; gap: 28px; }
.card p { max-width: 42ch; margin: 0; color: var(--muted); }
.card-arrow { flex: 0 0 auto; color: var(--accent); font-size: 1.5rem; transition: transform .2s ease; }
.site-footer { min-height: 195px; padding-block: 30px; display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: 22px 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: .78rem; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
.footer-f { grid-column: 1; grid-row: 1; color: var(--ink); font-size: 1.7rem; font-weight: 900; letter-spacing: -.08em; }
.footer-message { grid-column: 1 / -1; grid-row: 2; display: grid; gap: 10px; margin-top: 8px; padding-top: 26px; border-top: 1px solid var(--line); }
.footer-motto { display: flex; flex-wrap: nowrap; gap: 0 14px; color: var(--ink); font-size: .88rem; line-height: 1.65; letter-spacing: .025em; text-transform: none; white-space: nowrap; }
.footer-motto span { white-space: nowrap; }
.footer-motto b { color: var(--accent); font-size: 1.08em; font-weight: 900; }
.footer-copy { font-size: .7rem; letter-spacing: .1em; }
.footer-nav { grid-column: 2; grid-row: 1; display: flex; flex-wrap: wrap; justify-content: flex-end; justify-self: end; gap: 12px 24px; }
.footer-nav a { border-bottom: 1px solid transparent; }
.footer-nav a:hover, .footer-nav a[aria-current="page"] { color: var(--ink); border-color: var(--accent); }

.article-hero { padding-block: clamp(75px, 10vw, 125px) 70px; border-bottom: 1px solid var(--line); }
.back { display: inline-flex; gap: 9px; align-items: center; margin-bottom: 65px; color: var(--muted); font-size: .8rem; font-weight: 750; text-transform: uppercase; letter-spacing: .09em; }
.article-hero h1 { max-width: 980px; margin: 0; font-size: clamp(3.7rem, 8.8vw, 8rem); line-height: .88; letter-spacing: -.073em; }
.article-meta { display: flex; flex-wrap: wrap; gap: 12px 28px; margin-top: 45px; color: var(--muted); font-size: .8rem; font-weight: 750; text-transform: uppercase; letter-spacing: .08em; }
.article-body { display: grid; grid-template-columns: 1fr minmax(0, 2fr); gap: 50px; padding-block: clamp(70px, 9vw, 120px); }
.article-aside { color: var(--accent); font-size: .78rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.article-copy { max-width: 760px; }
.article-copy .standfirst { margin: 0 0 55px; font-size: clamp(1.5rem, 2.7vw, 2.25rem); line-height: 1.28; letter-spacing: -.025em; }
.article-copy h2 { margin: 62px 0 18px; font-size: clamp(2rem, 3.8vw, 3.25rem); line-height: 1; letter-spacing: -.045em; }
.article-copy p { margin: 0 0 25px; color: #3e3d39; font-size: 1.1rem; line-height: 1.75; }
.article-quote { margin: 65px 0; padding: 38px 0 38px 35px; border-left: 5px solid var(--accent); font-size: clamp(2rem, 4.5vw, 4rem); font-weight: 820; line-height: 1; letter-spacing: -.05em; }
.reading-list { margin-top: 70px; padding-top: 34px; border-top: 1px solid var(--line); }
.reading-list h2 { margin: 0 0 24px; font-size: clamp(1.7rem, 3vw, 2.6rem); }
.reading-list ul { margin: 0; padding: 0; list-style: none; }
.reading-list li { padding: 15px 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 1rem; }
.reading-list li::before { content: "↗"; margin-right: 12px; color: var(--accent); font-weight: 800; }
.next-idea { display: block; margin-top: 75px; padding: 28px 0; border-block: 1px solid var(--line); }
.next-idea small { display: block; margin-bottom: 8px; color: var(--accent); font-weight: 800; text-transform: uppercase; letter-spacing: .1em; }
.next-idea strong { font-size: clamp(1.7rem, 3vw, 2.6rem); letter-spacing: -.035em; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }

@media (max-width: 820px) {
  .shell { width: min(calc(100% - 32px), var(--max)); }
  .nav { min-height: 76px; }
  .mark { width: 44px; height: 44px; font-size: 27px; }
  .nav-principles { display: none; }
  .hero-foot { grid-template-columns: 1fr; }
  .hero-count { justify-self: start; }
  .featured-link { min-height: 520px; grid-template-columns: 1fr; }
  .featured-copy { grid-column: 1; }
  .article-grid { grid-template-columns: 1fr; }
  .card, .card:nth-child(even) { min-height: 330px; padding-inline: 0; border-left: 0; }
  .card:hover { padding-left: 18px; }
  .article-body { grid-template-columns: 1fr; gap: 30px; }
  .site-footer { grid-template-columns: 1fr; align-items: start; }
  .footer-f { grid-column: 1; grid-row: 1; }
  .footer-nav { grid-column: 1; grid-row: 2; justify-content: flex-start; justify-self: start; }
  .footer-message { grid-column: 1; grid-row: 3; }
  .footer-motto { flex-wrap: wrap; white-space: normal; }
}
@media (max-width: 520px) {
  .nav-links { gap: 17px; font-size: .7rem; }
  .nav-guides, .nav-contact { display: none; }
  .nav-curated-menu { right: -42px; }
  .blog-hero h1 { font-size: 4rem; }
  .library-head { align-items: start; flex-direction: column; }
  .site-footer { padding-block: 28px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}