@import url("https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=DM+Sans:wght@400;500;600;700&family=Source+Serif+4:opsz,wght@8..60,500;8..60,600;8..60,700&display=swap");

:root {
  --ink: #142522;
  --ink-soft: #52635f;
  --paper: #f5f0e6;
  --surface: #fffdf8;
  --line: #bdc7c1;
  --teal: #087f73;
  --teal-dark: #07564f;
  --coral: #d8583d;
  --lime: #dbe969;
  --blue: #d6e8ee;
  --measure: 760px;
  --wide: 1180px;
}

* { box-sizing: border-box; }

html {
  background: var(--paper);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 94% 2%, rgba(219, 233, 105, 0.45), transparent 26rem),
    radial-gradient(circle at 0 24%, rgba(214, 232, 238, 0.6), transparent 30rem),
    var(--paper);
  color: var(--ink);
  font-family: "DM Sans", Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.68;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover { text-decoration-thickness: 2px; }

a:focus-visible,
[tabindex="-1"]:focus-visible {
  outline: 4px solid var(--lime);
  outline-offset: 5px;
}

.skip-link {
  position: fixed;
  z-index: 40;
  top: 12px;
  left: 12px;
  padding: 11px 15px;
  background: var(--ink);
  color: white;
  font-weight: 700;
  transform: translateY(-180%);
}

.skip-link:focus { transform: translateY(0); }

.shell { width: min(var(--wide), calc(100% - 48px)); margin: 0 auto; }
.measure { width: min(var(--measure), 100%); }

.site-header {
  border-bottom: 1px solid rgba(20, 37, 34, 0.16);
  background: rgba(245, 240, 230, 0.86);
  backdrop-filter: blur(16px);
}

.site-nav {
  display: flex;
  min-height: 78px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.wordmark { font-weight: 700; letter-spacing: -0.02em; text-decoration: none; }
.nav-links { display: flex; align-items: center; gap: 22px; font-size: 0.9rem; }
.nav-links a { display: inline-flex; min-height: 44px; align-items: center; text-decoration: none; }
.nav-links [aria-current="page"] { color: var(--teal-dark); font-weight: 700; }

.eyebrow {
  color: var(--teal-dark);
  font-family: "DM Mono", ui-monospace, monospace;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1, h2, h3, .display {
  margin-top: 0;
  font-family: "Source Serif 4", Georgia, serif;
  font-weight: 600;
  letter-spacing: -0.035em;
}

h1 { font-size: clamp(3.5rem, 8vw, 7.7rem); line-height: 0.93; }
h2 { font-size: clamp(2.55rem, 5vw, 4.9rem); line-height: 0.98; }
h3 { font-size: clamp(1.7rem, 3.2vw, 2.8rem); line-height: 1.06; }

.writing-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, .95fr);
  gap: clamp(42px, 7vw, 92px);
  align-items: end;
  padding: clamp(84px, 11vw, 156px) 0 80px;
}

.writing-hero h1 { margin: 18px 0 26px; }
.writing-hero .lede { max-width: 690px; color: var(--ink-soft); font-size: clamp(1.15rem, 2vw, 1.5rem); }

.cover-panel {
  position: relative;
  overflow: hidden;
  min-height: 520px;
  border: 1px solid var(--ink);
  background: var(--teal-dark);
  color: white;
}

.cover-panel::before {
  position: absolute;
  top: -95px;
  right: -82px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: var(--lime);
  content: "";
}

.cover-panel::after {
  position: absolute;
  right: 48px;
  bottom: 44px;
  width: 170px;
  height: 170px;
  border: 2px solid rgba(255,255,255,.55);
  border-radius: 50%;
  content: "";
}

.cover-copy { position: relative; z-index: 1; padding: 42px; }
.cover-copy .eyebrow { display: inline-block; padding: 6px 8px; background: rgba(7, 86, 79, .92); }
.cover-copy .display { max-width: 410px; margin: 132px 0 18px; font-size: clamp(3rem, 6vw, 5.4rem); line-height: .94; }
.cover-copy p { max-width: 350px; color: rgba(255,255,255,.76); }

.series-card {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: clamp(34px, 6vw, 80px);
  align-items: center;
  margin: 0 0 120px;
  padding: clamp(28px, 5vw, 58px);
  border: 1px solid var(--line);
  background: rgba(255,253,248,.86);
  box-shadow: 0 22px 68px rgba(20,37,34,.08);
}

.series-card h2 { margin: 12px 0 22px; }
.series-card p { color: var(--ink-soft); font-size: 1.08rem; }
.series-card img { border: 1px solid rgba(20,37,34,.16); background: #f9f6ef; }

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  margin-top: 18px;
  padding: 12px 18px;
  border-radius: 999px;
  background: var(--teal-dark);
  color: white;
  font-weight: 700;
  text-decoration: none;
}

.series-hero { padding: clamp(78px, 11vw, 152px) 0 64px; }
.series-hero h1 { max-width: 1060px; margin: 20px 0 28px; }
.series-subtitle { max-width: 800px; margin: 0; color: var(--ink-soft); font-family: "Source Serif 4", Georgia, serif; font-size: clamp(1.35rem, 2.4vw, 2rem); line-height: 1.36; }

.series-meta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 34px; }
.series-meta span { padding: 7px 10px; border: 1px solid var(--line); background: rgba(255,253,248,.7); font-size: .82rem; font-weight: 700; }

.series-intro {
  display: grid;
  grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr);
  gap: clamp(38px, 7vw, 96px);
  align-items: start;
  padding: 64px 0 88px;
  border-top: 1px solid var(--line);
}

.series-intro .statement { margin: 0; font-size: clamp(2.2rem, 4.4vw, 4rem); line-height: 1.04; }
.series-intro p { color: var(--ink-soft); font-size: 1.12rem; }

.chapter-map {
  position: sticky;
  z-index: 20;
  top: 0;
  border-block: 1px solid var(--line);
  background: rgba(245,240,230,.95);
  backdrop-filter: blur(18px);
}

.chapter-map ol {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0;
  padding: 0;
  list-style: none;
}

.chapter-map a { display: block; min-height: 86px; padding: 16px 18px; border-left: 1px solid var(--line); text-decoration: none; }
.chapter-map li:last-child a { border-right: 1px solid var(--line); }
.chapter-map small { display: block; color: var(--coral); font-family: "DM Mono", ui-monospace, monospace; font-size: .72rem; }
.chapter-map strong { display: block; margin-top: 4px; font-size: .87rem; line-height: 1.28; }

.chapter {
  scroll-margin-top: 104px;
  padding: clamp(88px, 12vw, 158px) 0;
  border-bottom: 1px solid var(--line);
}

.chapter-header { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: clamp(28px, 6vw, 76px); align-items: start; margin-bottom: 66px; }
.chapter-number { color: var(--coral); font-family: "Source Serif 4", Georgia, serif; font-size: 5.8rem; line-height: .82; }
.chapter-header h2 { max-width: 860px; margin: 0; }

.prose { width: min(var(--measure), calc(100% - 48px)); margin: 0 auto; }
.prose p { margin: 0 0 1.45em; }
.prose h3 { margin: 3.1em 0 .7em; }
.prose ul, .prose ol { margin: 0 0 1.6em; padding-left: 1.4em; }
.prose li { margin: .65em 0; }
.prose a { color: var(--teal-dark); }
.prose code { padding: .18em .35em; background: rgba(20,37,34,.07); font-family: "DM Mono", ui-monospace, monospace; font-size: .88em; }

.article-figure { width: min(1080px, calc(100% - 48px)); margin: clamp(64px, 8vw, 110px) auto; }
.article-figure__frame { padding: clamp(12px, 2vw, 22px); border: 1px solid var(--line); background: var(--surface); box-shadow: 0 18px 54px rgba(20,37,34,.08); }
.article-figure figcaption { display: grid; grid-template-columns: 115px minmax(0, 1fr); gap: 22px; margin-top: 16px; color: var(--ink-soft); font-size: .9rem; }
.figure-number { color: var(--coral); font-family: "DM Mono", ui-monospace, monospace; font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; }

.series-close { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 64px; padding: 96px 0 112px; }
.series-close h2 { margin-bottom: 20px; }
.related-list { display: grid; gap: 12px; }
.related-list a { display: block; padding: 20px; border: 1px solid var(--line); background: rgba(255,253,248,.72); text-decoration: none; }
.related-list strong { display: block; margin-bottom: 4px; }
.related-list span { color: var(--ink-soft); font-size: .92rem; }

.site-footer { display: flex; justify-content: space-between; gap: 24px; padding: 34px 0 52px; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: .9rem; }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

@media (max-width: 820px) {
  .writing-hero, .series-card, .series-intro, .series-close { grid-template-columns: 1fr; }
  .cover-panel { min-height: 430px; }
  .chapter-map { position: static; }
  .chapter-map ol { grid-template-columns: 1fr 1fr; }
  .chapter-map li:nth-child(2) a { border-right: 1px solid var(--line); }
  .chapter-map li:nth-child(-n+2) a { border-bottom: 1px solid var(--line); }
  .chapter-header { grid-template-columns: 110px minmax(0, 1fr); }
  .chapter-number { font-size: 4.5rem; }
}

@media (max-width: 560px) {
  .shell { width: min(100% - 32px, var(--wide)); }
  .site-nav { align-items: flex-start; padding: 16px 0; }
  .nav-links { flex-wrap: wrap; justify-content: flex-end; gap: 2px 14px; }
  .nav-links .optional { display: none; }
  .writing-hero { padding-top: 62px; }
  .cover-panel { min-height: 380px; }
  .cover-copy { padding: 28px; }
  .cover-copy .display { margin-top: 118px; }
  .chapter-map ol { grid-template-columns: 1fr; }
  .chapter-map a { min-height: 0; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .chapter-map li:last-child a { border-bottom: 0; }
  .chapter-header { grid-template-columns: 1fr; margin-bottom: 48px; }
  .chapter-number { font-size: 3rem; }
  .prose, .article-figure { width: 100%; }
  .article-figure figcaption { grid-template-columns: 1fr; gap: 3px; }
  .site-footer { flex-direction: column; }
}