/* Plain Leverage: Mainframe Broadsheet.
   Ivory paper, deep ink, signal rust, greenbar sage.
   IBM Plex Serif for reading. IBM Plex Sans for headlines. IBM Plex Mono for the machine layer. */

:root {
  --paper: #F4F1EC;
  --ink: #1A1D1A;
  --accent: #C03A1B;
  --greenbar: #EBE9DF;
  --greenbar-hover: #E3E0D4;
  --muted: #5B5F58;
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --serif: "IBM Plex Serif", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --wrap: 1180px;
  --pad: 24px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--accent); color: var(--paper); }

a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover { color: var(--ink); }

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

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

/* Layout rails */

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

.wrap-narrow { max-width: 760px; }

/* Skip link */

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--paper);
  padding: 10px 14px;
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  text-decoration: none;
  z-index: 100;
}

.skip:focus { left: 16px; top: 16px; }

/* System bar: the machine layer above the masthead */

.sysbar {
  background: var(--ink);
  color: var(--paper);
  border-bottom: 1px solid var(--ink);
  font-family: var(--mono);
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-variant-numeric: tabular-nums;
}

.sysbar-inner {
  display: flex;
  align-items: center;
  min-height: 34px;
}

.sysbar-inner > * { padding-top: 8px; padding-bottom: 8px; }

.sysbar-inner > * + * {
  margin-left: 20px;
  padding-left: 20px;
  border-left: 1px solid rgba(244, 241, 236, 0.28);
}

.sysbar-label { color: rgba(244, 241, 236, 0.72); }
.sysbar-issue { color: var(--paper); }
.sysbar-date { color: rgba(244, 241, 236, 0.72); }

.sysbar-rss {
  margin-left: auto;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
}

.sysbar-rss:hover { color: var(--accent); }

/* Masthead */

.masthead { border-bottom: 1px solid var(--ink); }

.masthead-inner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 32px;
  padding-top: 22px;
  padding-bottom: 20px;
}

.wordmark {
  display: inline-block;
  white-space: nowrap;
  color: var(--ink);
  font-family: var(--sans);
  font-size: clamp(1.55rem, 2.6vw, 2.05rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.035em;
  text-transform: uppercase;
  text-decoration: none;
}

.wordmark::before {
  content: "";
  display: inline-block;
  width: 0.62em;
  height: 0.62em;
  margin-right: 0.34em;
  vertical-align: baseline;
  background: var(--accent);
}

.wordmark:hover { color: var(--ink); }
.wordmark-ai { color: var(--accent); }

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

nav a {
  color: var(--ink);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
}

nav a:hover,
nav a[aria-current="page"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* Typographic primitives */

.kicker {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.66rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.meta {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.cta {
  display: inline-block;
  padding: 12px 18px;
  background: var(--accent);
  border: 1px solid var(--accent);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  text-decoration: none;
}

.cta:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.quiet-link {
  font-family: var(--mono);
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
}

.quiet-link:hover { color: var(--accent); }

/* Homepage hero: broadsheet split with a technical sidebar */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  column-gap: 0;
  padding: 42px 0 40px;
  border-bottom: 1px solid var(--ink);
}

.hero .kicker {
  grid-column: 1 / -1;
  margin-bottom: 18px;
}

.hero-title {
  grid-column: 1;
  grid-row: 2;
  margin: 0;
  max-width: 14ch;
  font-family: var(--sans);
  font-size: clamp(2.7rem, 5.4vw, 4.4rem);
  font-weight: 700;
  line-height: 0.96;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.hero-sub {
  grid-column: 2;
  grid-row: 2;
  margin: 0;
  max-width: 42ch;
  padding-left: 28px;
  border-left: 1px solid var(--ink);
  font-family: var(--serif);
  font-size: 1rem;
  line-height: 1.6;
}

.hero-actions {
  grid-column: 2;
  grid-row: 3;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin: 20px 0 0;
  padding-left: 28px;
}

/* Latest issue: front-page lead */

.lead {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  column-gap: 0;
  padding: 30px 0 32px;
  border-bottom: 1px solid var(--ink);
}

.lead .kicker {
  grid-column: 1 / -1;
  margin-bottom: 14px;
  color: var(--accent);
}

.lead-title {
  grid-column: 1;
  grid-row: 2;
  margin: 0 0 14px;
  max-width: 22ch;
  font-family: var(--sans);
  font-size: clamp(1.9rem, 3.6vw, 2.9rem);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.lead-title a { color: var(--ink); text-decoration: none; }
.lead-title a:hover { color: var(--accent); }

.lead-dek {
  grid-column: 1;
  grid-row: 3;
  margin: 0;
  max-width: 46ch;
  font-family: var(--serif);
  font-size: 1.2rem;
  font-style: italic;
  line-height: 1.45;
}

.lead-excerpt {
  grid-column: 2;
  grid-row: 2 / span 2;
  margin: 0;
  padding-left: 28px;
  border-left: 1px solid var(--ink);
  font-size: 1rem;
  line-height: 1.6;
}

.lead .meta {
  grid-column: 2;
  grid-row: 4;
  margin-top: 14px;
  padding-left: 28px;
}

.lead > p:last-child {
  grid-column: 2;
  grid-row: 5;
  margin: 14px 0 0;
  padding-left: 28px;
}

/* Editorial blocks */

.block {
  padding: 30px 0;
  border-bottom: 1px solid var(--ink);
}

.block:last-of-type { border-bottom: 0; }

.block-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 16px;
}

.block-title {
  margin: 0;
  font-family: var(--sans);
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.block-note {
  margin: 0 0 18px;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--muted);
}

.block > p { max-width: 64ch; }

/* The feed: greenbar line-printer table */

.feed-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--ink);
  counter-reset: feed;
}

.feed-item {
  display: grid;
  grid-template-columns: 2.6rem 7.2rem minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 16px;
  padding: 12px 12px 12px 0;
  border-bottom: 1px solid var(--ink);
}

.feed-item:nth-child(even) { background: var(--greenbar); }
.feed-item:hover { background: var(--greenbar-hover); }

.feed-item::before {
  counter-increment: feed;
  content: counter(feed, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.tag {
  display: inline-block;
  padding: 3px 6px;
  border: 1px solid var(--ink);
  font-family: var(--mono);
  font-size: 0.6rem;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink);
}

.feed-title {
  font-family: var(--sans);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--ink);
  text-decoration: none;
}

.feed-title:hover {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.feed-meta {
  font-family: var(--mono);
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-align: right;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

/* Feed page controls */

.page-head {
  padding: 34px 0 24px;
  border-bottom: 1px solid var(--ink);
}

.page-head .kicker {
  margin-bottom: 12px;
  color: var(--accent);
}

.page-title {
  margin: 0 0 12px;
  max-width: 20ch;
  font-family: var(--sans);
  font-size: clamp(2.2rem, 4.4vw, 3.5rem);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.page-sub {
  margin: 0;
  max-width: 62ch;
  font-size: 1.05rem;
  line-height: 1.55;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 12px;
  margin-top: 22px;
  padding: 12px 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

#search {
  flex: 1 1 260px;
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid var(--ink);
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

#search::placeholder { color: var(--muted); opacity: 1; }

.filters { display: flex; flex-wrap: wrap; gap: 0; }

.filter {
  margin-left: -1px;
  padding: 9px 12px;
  border: 1px solid var(--ink);
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  cursor: pointer;
}

.filter:first-child { margin-left: 0; }
.filter:hover { background: var(--ink); color: var(--paper); }
.filter.is-active { background: var(--accent); border-color: var(--accent); color: var(--paper); }

#count {
  margin: 12px 0 0;
  font-family: var(--mono);
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* Archive index */

.archive-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--ink);
}

.archive-item {
  display: grid;
  grid-template-columns: 12rem minmax(0, 1fr);
  gap: 8px 28px;
  padding: 20px 0;
  border-bottom: 1px solid var(--ink);
}

.archive-item .meta { grid-column: 1; grid-row: 1 / span 2; }

.archive-item h2 {
  grid-column: 2;
  margin: 0;
  font-family: var(--sans);
  font-size: clamp(1.25rem, 2.2vw, 1.65rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.archive-item h2 a { color: var(--ink); text-decoration: none; }
.archive-item h2 a:hover { color: var(--accent); }

.archive-dek {
  grid-column: 2;
  margin: 4px 0 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--muted);
}

/* Issue page */

.issue { padding-top: 34px; }

.issue-head {
  padding-bottom: 22px;
  border-bottom: 1px solid var(--ink);
}

.issue-head .kicker {
  margin-bottom: 14px;
  color: var(--accent);
}

.issue-title {
  margin: 0 0 14px;
  max-width: 18ch;
  font-family: var(--sans);
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.issue-dek {
  margin: 0 0 16px;
  max-width: 54ch;
  font-family: var(--serif);
  font-size: 1.3rem;
  font-style: italic;
  line-height: 1.45;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.prose {
  max-width: 68ch;
  margin: 0 auto;
  padding-top: 30px;
  font-size: 19px;
  line-height: 1.65;
}

.prose > p { margin: 0 0 1.2em; text-wrap: pretty; }

.prose h2 {
  margin: 2.4em 0 0.8em;
  padding-top: 18px;
  border-top: 1px solid var(--ink);
  font-family: var(--sans);
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.prose h2 a { color: var(--ink); text-decoration: none; }
.prose h2 a:hover { color: var(--accent); }

.prose h3 {
  margin: 2em 0 0.6em;
  font-family: var(--sans);
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.015em;
}

.prose ul,
.prose ol { margin: 0 0 1.2em; padding-left: 1.3em; }

.prose li { margin: 0.35em 0; }

.prose blockquote {
  margin: 0 0 1.4em;
  padding: 16px 20px;
  background: var(--greenbar);
  border: 1px solid var(--ink);
  border-left: 3px solid var(--accent);
}

.prose blockquote.lede {
  margin: 0 0 1.5em;
  padding: 0;
  background: none;
  border: 0;
  /* Inherits body size on purpose: the lede should read as ordinary prose. */
  font-size: inherit;
}

.prose blockquote.lede p { margin: 0; }

.prose blockquote p { margin: 0; }
.prose blockquote p + p { margin-top: 0.8em; }

.prose hr {
  margin: 2.2em 0;
  border: 0;
  border-top: 1px solid var(--ink);
}

.prose code {
  padding: 2px 5px;
  border: 1px solid var(--ink);
  background: var(--greenbar);
  font-family: var(--mono);
  font-size: 0.85em;
}

.prose strong { font-weight: 600; }

.prose p > strong:only-child {
  display: block;
  margin-bottom: 6px;
  font-family: var(--mono);
  font-size: 0.66rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.prose a { text-decoration-thickness: 1px; }

.more {
  margin-top: 48px;
  padding-top: 22px;
  border-top: 1px solid var(--ink);
}

.more .block-title { margin-bottom: 12px; }

.plain-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.plain-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--ink);
}

.plain-list li:last-child { border-bottom: 0; }

.plain-list a {
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
}

.plain-list a:hover { color: var(--accent); }

/* Subscribe form */

.subscribe {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  max-width: 520px;
  margin: 0 0 12px;
}

.subscribe input {
  flex: 1 1 240px;
  min-width: 0;
  padding: 12px 14px;
  border: 1px solid var(--ink);
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.subscribe input::placeholder { color: var(--muted); opacity: 1; }

.subscribe button {
  padding: 12px 18px;
  border: 1px solid var(--accent);
  border-radius: 0;
  background: var(--accent);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
}

.subscribe button:hover { background: var(--ink); border-color: var(--ink); }

.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;
}

/* Footer */

.footer {
  margin-top: 56px;
  padding: 26px 0 34px;
  border-top: 1px solid var(--ink);
  font-family: var(--mono);
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.footer-line { margin: 0 0 6px; }
.footer-line.muted { color: var(--muted); }
.footer a { color: var(--accent); }

/* Responsive: keep the broadsheet hierarchy on small screens */

@media (max-width: 900px) {
  .hero,
  .lead { display: block; }

  .hero-title {
    max-width: 16ch;
    font-size: clamp(2.4rem, 8vw, 3.4rem);
  }

  .hero-sub {
    margin-top: 20px;
    padding-left: 0;
    border-left: 0;
    max-width: 56ch;
  }

  .hero-actions { margin-top: 20px; padding-left: 0; }

  .lead-title { max-width: 26ch; }

  .lead-excerpt {
    margin-top: 20px;
    padding-left: 0;
    border-left: 0;
  }

  .lead .meta,
  .lead > p:last-child { padding-left: 0; }

  .archive-item { grid-template-columns: 1fr; gap: 6px; }
  .archive-item .meta { grid-row: auto; }
  .archive-item h2,
  .archive-dek { grid-column: 1; }
}

@media (max-width: 720px) {
  :root { --pad: 18px; }

  .sysbar-label { display: none; }

  .sysbar-inner { flex-wrap: wrap; gap: 8px; }
  .sysbar-inner > * + * { margin-left: 12px; padding-left: 12px; }

  .masthead-inner {
    display: block;
    padding-top: 18px;
    padding-bottom: 16px;
  }

  nav { margin-top: 14px; gap: 16px; }

  .hero { padding: 30px 0 28px; }
  .lead { padding: 26px 0 28px; }
  .block { padding: 26px 0; }

  .feed-item {
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: 4px 12px;
    padding: 12px 10px 12px 0;
  }

  .feed-item::before { grid-column: 1; grid-row: 1; }
  .feed-item .tag { grid-column: 2; grid-row: 1; justify-self: start; }

  .feed-title {
    grid-column: 2;
    grid-row: 2;
    font-size: 1rem;
  }

  .feed-meta {
    grid-column: 2;
    grid-row: 3;
    text-align: left;
    white-space: normal;
  }

  .controls { gap: 8px; }
  #search { flex-basis: 100%; }

  .prose { font-size: 18px; }
}

@media (max-width: 430px) {
  .sysbar-date { display: none; }
  .sysbar-inner > * + * { margin-left: 10px; padding-left: 10px; }
  .hero-title { font-size: 2.35rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition: none !important;
    animation: none !important;
  }
}

@media print {
  .sysbar,
  nav,
  .hero-actions,
  .controls,
  .subscribe,
  .skip { display: none; }

  body {
    background: #fff;
    color: #000;
    font-size: 11pt;
  }

  a { color: #000; }

  .masthead,
  .hero,
  .lead,
  .block,
  .feed-item,
  .archive-item,
  .issue-head,
  .prose h2,
  .footer { border-color: #000; }

  .feed-item:nth-child(even) { background: transparent; }
}