:root {
  --paper: #fffef8;
  --ink: #171717;
  --muted: #68655d;
  --line: #d9d3c5;
  --red: #e8452e;
  --blue: #2b62db;
  --yellow: #f2b51d;
  --green: #168b5b;
  --display: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  --body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --utility: "DIN Alternate", "Avenir Next Condensed", "Arial Narrow", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, transparent calc(100% - 1px), rgba(23,23,23,.035) 1px) 0 0 / 48px 48px,
    linear-gradient(transparent calc(100% - 1px), rgba(23,23,23,.035) 1px) 0 0 / 48px 48px,
    var(--paper);
  font-family: var(--body);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }

.article-bar, .article-shell, footer { width: min(1080px, calc(100% - 40px)); margin: 0 auto; }
.article-bar { min-height: 92px; display: flex; align-items: center; justify-content: space-between; border-bottom: 2px solid var(--ink); }
.back-link { font-weight: 800; text-decoration: none; }
.article-bar span { color: var(--muted); font: 700 11px/1 var(--utility); letter-spacing: .14em; }

.article-hero { padding: 76px 0 50px; }
.eyebrow { margin: 0 0 22px; color: var(--red); font: 800 12px/1 var(--utility); letter-spacing: .16em; }
h1 { max-width: 900px; margin: 0; font: 900 clamp(44px, 7vw, 82px)/1.04 var(--display); letter-spacing: -.05em; }
.lead { max-width: 760px; margin: 28px 0 0; color: #393733; font-size: 20px; line-height: 1.85; }
.article-hero img { display: block; width: 100%; height: auto; margin-top: 48px; border: 2px solid var(--ink); background: var(--paper); }
.case-hero-figure { width: calc(100% - 214px); max-width: 800px; margin: 48px 0 0 214px; }
.case-hero-figure img { width: 100%; height: auto; margin: 0; object-fit: contain; background: #f4f1e8; }
.case-hero-figure figcaption { padding: 12px 2px 0; color: #68635b; font: 700 12px/1.6 var(--utility); letter-spacing: .04em; }

.decision { display: grid; grid-template-columns: 180px 1fr; gap: 34px; padding: 44px 0; border-top: 2px solid var(--ink); border-bottom: 2px solid var(--ink); }
.decision b { color: var(--blue); font: 800 13px/1.3 var(--utility); letter-spacing: .13em; }
.decision p { margin: 0; font: 900 clamp(27px, 4vw, 43px)/1.35 var(--display); }

.article-section { padding: 78px 0; border-bottom: 2px solid var(--ink); }
.section-title { display: grid; grid-template-columns: 180px 1fr; gap: 34px; margin-bottom: 38px; }
.section-title span { color: var(--red); font: 800 12px/1.3 var(--utility); letter-spacing: .14em; }
.section-title h2 { margin: 0; font: 900 clamp(36px, 5vw, 58px)/1.05 var(--display); letter-spacing: -.04em; }

.chip-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.chip-card { min-height: 260px; padding: 30px; border: 2px solid var(--ink); box-shadow: 7px 7px 0 var(--ink); }
.chip-card:nth-child(1) { background: #e9f0ff; }
.chip-card:nth-child(2) { background: #fff0eb; }
.chip-card:nth-child(3) { background: #eaf6ef; }
.chip-card:nth-child(4) { background: #fff6d9; }
.chip-card small { font: 800 12px/1 var(--utility); letter-spacing: .15em; }
.chip-card h3 { margin: 18px 0 12px; font: 900 34px/1 var(--display); }
.chip-card p { margin: 0; color: #3f3d38; font-size: 16px; line-height: 1.8; }
.chip-card a { display: inline-block; margin-top: 21px; font-weight: 800; text-underline-offset: 5px; }

.path-list { display: grid; gap: 0; border-top: 1px solid var(--ink); }
.path-row { display: grid; grid-template-columns: 1fr 160px; gap: 24px; align-items: center; padding: 22px 0; border-bottom: 1px solid var(--ink); }
.path-row p { margin: 0; font-size: 18px; line-height: 1.6; }
.path-row strong { padding: 10px 14px; color: var(--paper); background: var(--ink); text-align: center; }

.warning { padding: 32px; border-left: 9px solid var(--yellow); background: #fff6d9; }
.warning h3 { margin: 0 0 12px; font-size: 24px; }
.warning ul { margin: 0; padding-left: 1.4em; color: #3f3d38; line-height: 1.9; }

.maker-use { display: grid; grid-template-columns: repeat(4, 1fr); border: 2px solid var(--ink); }
.maker-use div { min-height: 190px; padding: 24px; border-right: 1px solid var(--ink); }
.maker-use div:last-child { border-right: 0; }
.maker-use b { color: var(--blue); font: 900 27px/1 var(--utility); }
.maker-use p { margin: 16px 0 0; line-height: 1.7; }

.source-note { padding: 32px; color: #403d38; background: #f1eee5; }
.source-note h2 { margin: 0 0 16px; color: var(--ink); font-size: 26px; }
.source-note p { margin: 10px 0; line-height: 1.8; }
.source-links { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 20px; }
.source-links a { padding: 8px 11px; border: 1px solid var(--ink); background: var(--paper); font-size: 13px; font-weight: 700; text-decoration: none; }

.editorial-copy { max-width: 800px; margin-left: 214px; }
.editorial-copy p { margin: 0 0 1.35em; color: #34322e; font-size: 18px; line-height: 1.95; }
.editorial-copy p:last-child { margin-bottom: 0; }
.editorial-copy ul { margin: 22px 0 28px; padding: 22px 28px 22px 50px; border-left: 8px solid var(--yellow); background: #fff6d9; }
.editorial-copy li { margin: 9px 0; color: #34322e; font-size: 17px; line-height: 1.75; }
.editorial-copy strong { color: var(--blue); }
.editorial-figure { width: calc(100% - 214px); max-width: 800px; margin: 42px 0 0 214px; }
.editorial-figure img { display: block; width: 100%; height: auto; border: 2px solid var(--ink); background: var(--paper); object-fit: contain; }
.editorial-figure figcaption,
.editorial-grid figcaption { padding-top: 11px; color: var(--muted); font: 700 12px/1.6 var(--utility); letter-spacing: .04em; }
.editorial-grid { display: grid; width: calc(100% - 214px); max-width: 800px; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; margin: 42px 0 0 214px; align-items: start; }
.editorial-grid figure { margin: 0; }
.editorial-grid img { display: block; width: 100%; height: auto; border: 2px solid var(--ink); background: var(--paper); object-fit: contain; }
.closing-statement { padding: 48px; color: var(--paper); background: var(--blue); }
.closing-statement p { max-width: 850px; margin: 0; font: 900 clamp(34px, 5vw, 58px)/1.22 var(--display); letter-spacing: -.035em; }
.closing-statement em { color: var(--yellow); font-style: normal; }

.flow-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.flow-card { min-height: 220px; padding: 25px; border: 2px solid var(--ink); }
.flow-card:nth-child(1) { background: #e9f0ff; }
.flow-card:nth-child(2) { background: #fff6d9; }
.flow-card:nth-child(3) { background: #fff0eb; }
.flow-card:nth-child(4) { background: #eaf6ef; }
.flow-card small { font-family: var(--utility); font-size: 12px; font-weight: 800; letter-spacing: .14em; }
.flow-card h3 { margin: 18px 0 12px; font-family: var(--display); font-size: 27px; line-height: 1.1; }
.flow-card p { margin: 0; color: #3f3d38; line-height: 1.75; }

.principle-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border: 2px solid var(--ink); }
.principle-list article { min-height: 190px; padding: 28px; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.principle-list article:nth-child(2n) { border-right: 0; }
.principle-list article:nth-last-child(-n+2) { border-bottom: 0; }
.principle-list b { color: var(--blue); font-family: var(--utility); font-size: 14px; letter-spacing: .12em; }
.principle-list h3 { margin: 13px 0 10px; font-size: 23px; }
.principle-list p { margin: 0; color: #403d38; line-height: 1.75; }

.case-card { display: grid; grid-template-columns: 160px 1fr; gap: 28px; align-items: start; padding: 30px; border: 2px solid var(--ink); background: #fff6d9; box-shadow: 8px 8px 0 var(--ink); }
.case-index { display: grid; place-items: center; min-height: 150px; color: var(--paper); background: var(--blue); font-family: var(--utility); font-size: 52px; font-weight: 900; }
.case-card small { color: var(--red); font-family: var(--utility); font-size: 12px; font-weight: 800; letter-spacing: .14em; }
.case-card h3 { margin: 12px 0; font-family: var(--display); font-size: 30px; }
.case-card p { margin: 8px 0; color: #403d38; line-height: 1.75; }
.case-meta { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0; }
.case-meta span { padding: 7px 10px; border: 1px solid var(--ink); background: var(--paper); font-size: 13px; font-weight: 700; }
.case-card a { display: inline-block; padding: 11px 16px; color: var(--paper); background: var(--ink); font-weight: 800; text-decoration: none; }

footer { min-height: 110px; display: flex; align-items: center; justify-content: space-between; color: var(--muted); }
footer strong { color: var(--ink); }

@media (max-width: 760px) {
  .article-bar span { display: none; }
  .decision, .section-title { grid-template-columns: 1fr; gap: 14px; }
  .chip-grid { grid-template-columns: 1fr; }
  .flow-grid { grid-template-columns: 1fr 1fr; }
  .maker-use { grid-template-columns: 1fr 1fr; }
  .case-card { grid-template-columns: 1fr; }
  .maker-use div:nth-child(2) { border-right: 0; }
  .maker-use div:nth-child(-n+2) { border-bottom: 1px solid var(--ink); }
  .editorial-copy { margin-left: 0; }
  .case-hero-figure,
  .editorial-figure,
  .editorial-grid { width: 100%; margin-left: 0; }
}

@media (max-width: 480px) {
  .article-shell, .article-bar, footer { width: min(100% - 26px, 1080px); }
  .article-hero { padding-top: 52px; }
  .lead { font-size: 17px; }
  .path-row { grid-template-columns: 1fr; }
  .flow-grid, .principle-list { grid-template-columns: 1fr; }
  .principle-list article { border-right: 0; border-bottom: 1px solid var(--ink); }
  .principle-list article:nth-last-child(2) { border-bottom: 1px solid var(--ink); }
  .maker-use { grid-template-columns: 1fr; }
  .maker-use div { border-right: 0; border-bottom: 1px solid var(--ink); }
  .maker-use div:last-child { border-bottom: 0; }
  .editorial-grid { grid-template-columns: 1fr; }
  .closing-statement { padding: 30px 24px; }
}