:root {
  --paper: #f4f1e8;
  --paper-deep: #e9e4d7;
  --ink: #17212b;
  --muted: #687078;
  --line: #cbc5b8;
  --accent: #e85d3f;
  --accent-dark: #b83b25;
  --blue: #245d75;
  --green: #406c5a;
  --card: #fbf9f3;
  --code: #16232c;
  --code-text: #e7eee9;
  --shadow: 0 18px 45px rgba(37, 36, 31, 0.08);
  --radius: 4px;
  --content: 1180px;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 8% 2%, rgba(232, 93, 63, 0.08), transparent 24rem),
    linear-gradient(rgba(23, 33, 43, 0.025) 1px, transparent 1px),
    var(--paper);
  background-size: auto, 100% 28px, auto;
  color: var(--ink);
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", Georgia, serif;
  font-size: 17px;
  line-height: 1.82;
  text-rendering: optimizeLegibility;
}

::selection {
  background: rgba(232, 93, 63, 0.22);
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.24em;
}

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

img {
  max-width: 100%;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 1rem;
  z-index: 100;
  padding: 0.65rem 1rem;
  background: var(--ink);
  color: white;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(244, 241, 232, 0.94);
}

.header-inner {
  width: min(calc(100% - 2rem), var(--content));
  min-height: 82px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.78rem;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-decoration: none;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--ink);
  background: var(--accent);
  box-shadow: 4px 4px 0 var(--ink);
  color: #fff;
  font: 700 0.9rem/1 ui-monospace, monospace;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.88rem;
}

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

.site-nav a[aria-current="page"] {
  color: var(--accent-dark);
  font-weight: 700;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--green);
}

.status::before {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  content: "";
  box-shadow: 0 0 0 4px rgba(64, 108, 90, 0.12);
}

.page {
  width: min(calc(100% - 2rem), var(--content));
  margin: 0 auto;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin: 0 0 1rem;
  color: var(--accent-dark);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  line-height: 1.4;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 22px;
  height: 2px;
  background: currentColor;
  content: "";
}

.hero {
  padding: 5.4rem 0 4.3rem;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(260px, 0.65fr);
  gap: clamp(2.6rem, 7vw, 7rem);
  align-items: end;
  border-bottom: 1px solid var(--line);
}

.hero h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(3.15rem, 7.4vw, 7.5rem);
  font-weight: 900;
  letter-spacing: -0.065em;
  line-height: 0.96;
}

.hero h1 span {
  color: var(--accent);
}

.hero-lead {
  max-width: 700px;
  margin: 2rem 0 0;
  color: #4c535a;
  font-size: 1.08rem;
  line-height: 1.9;
}

.hero-note {
  position: relative;
  padding: 1.4rem 1.35rem 1.25rem;
  border: 1px solid var(--ink);
  background: var(--card);
  box-shadow: 8px 8px 0 var(--ink);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.88rem;
  line-height: 1.65;
  transform: rotate(1.2deg);
}

.hero-note strong {
  display: block;
  margin-bottom: 0.55rem;
  font: 700 0.74rem/1.2 ui-monospace, monospace;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.hero-note p {
  margin: 0;
}

.hero-note dl {
  margin: 1.1rem 0 0;
  padding-top: 1rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.35rem 1rem;
  border-top: 1px dashed var(--line);
}

.hero-note dt,
.hero-note dd {
  margin: 0;
}

.hero-note dd {
  font-family: ui-monospace, monospace;
  font-weight: 700;
}

.section {
  padding: 4.5rem 0;
}

.section-heading {
  margin-bottom: 2.25rem;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(1.9rem, 4vw, 3.2rem);
  letter-spacing: -0.04em;
  line-height: 1.15;
}

.section-heading p {
  max-width: 450px;
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.featured {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  border: 1px solid var(--ink);
  background: var(--card);
  box-shadow: var(--shadow);
}

.featured-copy {
  padding: clamp(2rem, 5vw, 4.2rem);
}

.featured-copy h3 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 4.6vw, 4.35rem);
  letter-spacing: -0.055em;
  line-height: 1.08;
}

.featured-copy h3 a {
  text-decoration: none;
}

.featured-copy p {
  max-width: 660px;
  margin: 0 0 1.7rem;
  color: #525b62;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--accent-dark);
  font-family: ui-monospace, monospace;
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
}

.read-more::after {
  content: "→";
  transition: transform 160ms ease;
}

.read-more:hover::after {
  transform: translateX(4px);
}

.featured-visual {
  min-height: 340px;
  padding: 2rem;
  display: grid;
  align-content: center;
  background:
    linear-gradient(135deg, transparent 0 45%, rgba(255, 255, 255, 0.11) 45% 55%, transparent 55%),
    var(--blue);
  color: #f5f1e8;
  border-left: 1px solid var(--ink);
  overflow: hidden;
}

.terminal {
  width: min(100%, 420px);
  margin: 0 auto;
  border: 1px solid rgba(255, 255, 255, 0.45);
  background: rgba(13, 27, 34, 0.74);
  box-shadow: 13px 13px 0 rgba(15, 28, 34, 0.35);
  font: 0.78rem/1.75 ui-monospace, "SFMono-Regular", Consolas, monospace;
  transform: rotate(-1.5deg);
}

.terminal-bar {
  padding: 0.6rem 0.8rem;
  display: flex;
  gap: 0.35rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.25);
}

.terminal-bar i {
  width: 8px;
  height: 8px;
  display: block;
  border-radius: 50%;
  background: var(--accent);
}

.terminal-bar i:nth-child(2) {
  background: #d7a642;
}

.terminal-bar i:nth-child(3) {
  background: #61a47f;
}

.terminal pre {
  margin: 0;
  padding: 1.25rem;
  color: #dce8e3;
  white-space: pre-wrap;
}

.terminal .dim {
  color: #89a29b;
}

.terminal .hot {
  color: #ff927a;
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.2rem;
}

.post-card {
  min-height: 320px;
  padding: 1.55rem;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  background: rgba(251, 249, 243, 0.76);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.post-card:hover {
  border-color: var(--ink);
  box-shadow: 6px 6px 0 var(--ink);
  transform: translate(-2px, -2px);
}

.post-card .meta {
  margin-bottom: 1.2rem;
}

.post-card h3 {
  margin: 0 0 0.9rem;
  font-size: 1.42rem;
  letter-spacing: -0.025em;
  line-height: 1.35;
}

.post-card h3 a {
  text-decoration: none;
}

.post-card p {
  margin: 0 0 1.2rem;
  color: var(--muted);
  font-size: 0.91rem;
  line-height: 1.75;
}

.post-card .read-more {
  margin-top: auto;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.9rem;
  align-items: center;
  color: var(--muted);
  font: 0.73rem/1.4 ui-monospace, "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.035em;
}

.tag {
  padding: 0.2rem 0.48rem;
  border: 1px solid currentColor;
  color: var(--blue);
  line-height: 1.2;
}

.topic-strip {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  list-style: none;
  border: 1px solid var(--ink);
  background: var(--ink);
  gap: 1px;
}

.topic-strip li {
  min-height: 150px;
  padding: 1.3rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--paper);
}

.topic-strip span {
  color: var(--accent);
  font: 700 0.75rem/1 ui-monospace, monospace;
}

.topic-strip strong {
  font-size: 1.3rem;
}

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

.archive-list li {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 1.5rem;
  align-items: baseline;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
}

.archive-list time,
.archive-list small {
  color: var(--muted);
  font: 0.76rem/1.4 ui-monospace, monospace;
}

.archive-list a {
  font-size: 1.08rem;
  font-weight: 700;
  text-decoration: none;
}

.site-footer {
  margin-top: 4rem;
  border-top: 1px solid var(--ink);
  background: var(--ink);
  color: #d7d9d8;
}

.footer-inner {
  width: min(calc(100% - 2rem), var(--content));
  margin: 0 auto;
  padding: 3rem 0;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: end;
}

.footer-inner strong {
  display: block;
  margin-bottom: 0.6rem;
  color: #fff;
  font-size: 1.15rem;
}

.footer-inner p {
  max-width: 580px;
  margin: 0;
  color: #aeb7ba;
  font-size: 0.86rem;
}

.footer-links {
  display: flex;
  gap: 1.2rem;
  font: 0.78rem/1.5 ui-monospace, monospace;
}

.footer-links a {
  color: #d7d9d8;
}

/* Article pages */
.article-shell {
  width: min(calc(100% - 2rem), 1120px);
  margin: 0 auto;
}

.article-header {
  padding: 5rem 0 3.4rem;
  border-bottom: 1px solid var(--line);
}

.article-header h1 {
  max-width: 960px;
  margin: 0.65rem 0 1.6rem;
  font-size: clamp(2.7rem, 6.5vw, 6.25rem);
  letter-spacing: -0.06em;
  line-height: 1.03;
}

.article-deck {
  max-width: 760px;
  margin: 0 0 1.6rem;
  color: #525b62;
  font-size: 1.12rem;
  line-height: 1.9;
}

.article-layout {
  padding: 3.7rem 0 5rem;
  display: grid;
  grid-template-columns: 190px minmax(0, 720px);
  gap: clamp(2.5rem, 8vw, 6rem);
  justify-content: start;
}

.article-aside {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.78rem;
  line-height: 1.55;
}

.article-aside .aside-box {
  position: sticky;
  top: 1.5rem;
  padding-top: 1rem;
  border-top: 2px solid var(--ink);
}

.article-aside strong {
  display: block;
  margin-bottom: 0.7rem;
  font: 700 0.72rem/1.2 ui-monospace, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.article-aside ol {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--muted);
}

.article-aside li + li {
  margin-top: 0.45rem;
}

.article-aside a {
  text-decoration: none;
}

.article-body {
  min-width: 0;
}

.article-body > p:first-child::first-letter {
  float: left;
  margin: 0.18rem 0.48rem 0 0;
  color: var(--accent);
  font-size: 4.5rem;
  font-weight: 900;
  line-height: 0.8;
}

.article-body p {
  margin: 0 0 1.45rem;
}

.article-body h2 {
  margin: 3.25rem 0 1rem;
  padding-top: 0.5rem;
  font-size: 1.75rem;
  letter-spacing: -0.025em;
  line-height: 1.35;
}

.article-body h2::before {
  margin-right: 0.5rem;
  color: var(--accent);
  content: "#";
  font-family: ui-monospace, monospace;
}

.article-body h3 {
  margin: 2.2rem 0 0.8rem;
  font-size: 1.18rem;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.6rem;
  padding-left: 1.4rem;
}

.article-body li {
  margin: 0.45rem 0;
}

.article-body blockquote {
  margin: 2rem 0;
  padding: 1.1rem 1.4rem;
  border-left: 4px solid var(--accent);
  background: var(--paper-deep);
  color: #4c5358;
}

.article-body blockquote p {
  margin: 0;
}

.article-body code {
  padding: 0.14em 0.35em;
  border: 1px solid rgba(23, 33, 43, 0.16);
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.5);
  font: 0.85em/1.4 ui-monospace, "SFMono-Regular", Consolas, monospace;
}

.article-body pre {
  margin: 2rem 0;
  padding: 1.25rem 1.4rem;
  overflow-x: auto;
  border-left: 4px solid var(--accent);
  background: var(--code);
  color: var(--code-text);
  font: 0.82rem/1.75 ui-monospace, "SFMono-Regular", Consolas, monospace;
}

.article-body pre code {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
}

.note {
  margin: 2rem 0;
  padding: 1.2rem 1.35rem;
  border: 1px solid var(--ink);
  background: var(--card);
  box-shadow: 5px 5px 0 var(--ink);
  font-size: 0.92rem;
}

.note strong {
  color: var(--accent-dark);
}

.article-end {
  margin-top: 3.5rem;
  padding-top: 1.25rem;
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  border-top: 1px solid var(--ink);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.84rem;
}

.article-end a {
  color: var(--accent-dark);
  font-weight: 700;
  text-decoration: none;
}

.simple-hero {
  padding: 5rem 0 3rem;
  border-bottom: 1px solid var(--line);
}

.simple-hero h1 {
  margin: 0;
  font-size: clamp(3rem, 7vw, 6rem);
  letter-spacing: -0.06em;
  line-height: 1;
}

.simple-hero p {
  max-width: 660px;
  margin: 1.5rem 0 0;
  color: var(--muted);
}

.about-grid {
  padding: 4rem 0;
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(240px, 0.7fr);
  gap: 5rem;
}

.about-grid h2 {
  margin: 0 0 1rem;
  font-size: 1.8rem;
}

.about-grid p {
  margin: 0 0 1.3rem;
}

.principles {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: principle;
}

.principles li {
  padding: 1rem 0;
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: 0.8rem;
  border-top: 1px solid var(--line);
  counter-increment: principle;
}

.principles li::before {
  color: var(--accent);
  content: "0" counter(principle);
  font: 700 0.78rem/1.8 ui-monospace, monospace;
}

.not-found {
  min-height: 70vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.not-found-code {
  color: var(--accent);
  font: 900 clamp(7rem, 22vw, 17rem)/0.8 ui-monospace, monospace;
  letter-spacing: -0.12em;
}

.not-found h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.15;
}

.not-found p {
  color: var(--muted);
}

@media (max-width: 900px) {
  .hero,
  .featured,
  .about-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    align-items: start;
  }

  .hero-note {
    max-width: 420px;
  }

  .featured-visual {
    border-top: 1px solid var(--ink);
    border-left: 0;
  }

  .post-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .topic-strip {
    grid-template-columns: repeat(2, 1fr);
  }

  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-aside {
    display: none;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .header-inner {
    min-height: 72px;
  }

  .site-nav .status {
    display: none;
  }

  .site-nav {
    gap: 0.9rem;
  }

  .site-nav a:nth-child(2) {
    display: none;
  }

  .hero {
    padding: 3.5rem 0;
  }

  .hero h1 {
    font-size: clamp(3.35rem, 18vw, 5rem);
  }

  .section {
    padding: 3.4rem 0;
  }

  .section-heading {
    align-items: start;
    flex-direction: column;
    gap: 0.65rem;
  }

  .featured-copy {
    padding: 1.6rem;
  }

  .featured-visual {
    min-height: 270px;
    padding: 1.2rem;
  }

  .post-grid {
    grid-template-columns: 1fr;
  }

  .post-card {
    min-height: 0;
  }

  .topic-strip {
    grid-template-columns: 1fr;
  }

  .topic-strip li {
    min-height: 115px;
  }

  .archive-list li {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .archive-list small {
    display: none;
  }

  .footer-inner,
  .not-found {
    grid-template-columns: 1fr;
  }

  .footer-links {
    flex-wrap: wrap;
  }

  .article-header {
    padding: 3.5rem 0 2.6rem;
  }

  .article-layout {
    padding-top: 2.5rem;
  }

  .article-end {
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}