/* 信息网 · 铅字报刊风（Neotype Press）
   纸底 #FAF8F3 / 墨色 #1A1A1A / 朱砂 #C2410C / 分隔线 #E5E0D5
   零圆角 零阴影 纯文字流 */

:root {
  --paper: #FAF8F3;
  --ink: #1A1A1A;
  --ink-soft: #6B6459;
  --cinnabar: #C2410C;
  --rule: #E5E0D5;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --sans: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { background: var(--paper); }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--cinnabar); }

/* ---------- 报头 ---------- */

.masthead {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  padding: 34px 48px 18px;
  max-width: 1440px;
  margin: 0 auto;
}

.brand { display: flex; flex-direction: column; line-height: 1; }
.brand-cn {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 46px;
  letter-spacing: 0.16em;
}
.brand-en {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.34em;
  color: var(--ink-soft);
  margin-top: 10px;
  text-transform: uppercase;
}

.masthead-tools {
  display: flex;
  align-items: center;
  gap: 22px;
  padding-bottom: 6px;
}

.search { display: flex; border-bottom: 1px solid var(--ink); }
.search input {
  border: 0;
  background: transparent;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink);
  width: 170px;
  padding: 6px 4px;
  outline: none;
}
.search input::placeholder { color: var(--ink-soft); }
.search button {
  border: 0;
  background: transparent;
  font-family: var(--serif);
  font-size: 14px;
  color: var(--ink-soft);
  cursor: pointer;
  padding: 6px 8px;
}
.search button:hover { color: var(--cinnabar); }

.tool-link {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border-bottom: 1px solid transparent;
}
.tool-link:hover { color: var(--cinnabar); border-color: var(--cinnabar); }

.rule-thick { height: 3px; background: var(--ink); max-width: 1440px; margin: 0 auto; }

/* ---------- 骨架 ---------- */

.shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 56px;
  max-width: 1440px;
  margin: 0 auto;
  padding: 40px 48px 64px;
  align-items: start;
}

/* ---------- 左栏 ---------- */

.rails {
  position: sticky;
  top: 24px;
  border-right: 1px solid var(--rule);
  padding-right: 28px;
}

.rails-title {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--ink);
  display: flex;
  justify-content: space-between;
}
.rails-title span { opacity: 0.6; }

.rails nav { display: flex; flex-direction: column; }

.rail {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 9px 0 9px 12px;
  border-bottom: 1px solid var(--rule);
  font-size: 16px;
  border-left: 3px solid transparent;
  transition: border-color .12s, color .12s;
}
.rail em {
  font-family: var(--mono);
  font-style: normal;
  font-size: 11px;
  color: var(--ink-soft);
}
.rail:hover, .rail.is-active {
  color: var(--cinnabar);
  border-left-color: var(--cinnabar);
}

.rails-foot {
  margin-top: 28px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--ink-soft);
  line-height: 2;
}

/* ---------- 版心 ---------- */

.paper { min-width: 0; }

.paper-head {
  border-bottom: 1px solid var(--ink);
  padding-bottom: 18px;
  margin-bottom: 8px;
}
.paper-date {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--ink-soft);
  text-transform: uppercase;
}
.paper-title {
  font-size: 64px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 700;
  margin: 12px 0 8px;
}
.paper-meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
}

/* ---------- 文章流 ---------- */

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

.stream-item {
  padding: 30px 0 28px;
  border-bottom: 1px solid var(--rule);
}

.stream-meta {
  display: flex;
  gap: 14px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 10px;
}
.stream-meta .pin { color: var(--cinnabar); }

.stream-title {
  font-size: 34px;
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  padding-left: 0;
  border-left: 3px solid transparent;
  transition: padding-left .14s, border-color .14s;
}
.stream-item:hover .stream-title {
  border-left-color: var(--cinnabar);
  padding-left: 14px;
}
.stream-item:hover .stream-title a { color: var(--cinnabar); }

.stream-excerpt {
  margin: 0 0 10px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.stream-byline {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.stream-byline a { color: var(--ink); border-bottom: 1px solid var(--rule); }
.stream-byline a:hover { color: var(--cinnabar); border-color: var(--cinnabar); }
.dot { opacity: 0.5; }

.stream-tight .stream-title { font-size: 22px; }

/* ---------- 阅读页 ---------- */

.read {
  max-width: 720px;
  margin: 0 auto;
  padding-top: 24px;
}

.read-kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.read-kicker a { color: var(--cinnabar); }

.read-title {
  font-size: 52px;
  line-height: 1.18;
  letter-spacing: -0.02em;
  font-weight: 700;
  margin: 18px 0 20px;
}

.read-byline {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--ink);
}
.read-byline a { color: var(--ink); }

.read-standfirst {
  font-size: 21px;
  line-height: 1.7;
  color: var(--ink-soft);
  margin: 26px 0 10px;
  font-style: italic;
}

.read-body { font-size: 18px; line-height: 1.9; }
.read-body p { margin: 0 0 1.35em; }
.read-body h2 {
  font-size: 30px;
  line-height: 1.3;
  margin: 2em 0 .6em;
  padding-top: .6em;
  border-top: 1px solid var(--rule);
}
.read-body h3 { font-size: 23px; margin: 1.6em 0 .5em; }
.read-body blockquote {
  margin: 1.6em 0;
  padding: 4px 0 4px 22px;
  border-left: 3px solid var(--cinnabar);
  color: var(--ink-soft);
  font-style: italic;
}
.read-body img { max-width: 100%; height: auto; display: block; margin: 1.8em 0; }
.read-body figure { margin: 1.8em 0; }
.read-body figcaption {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-soft);
  letter-spacing: .08em;
}
.read-body a { color: var(--cinnabar); border-bottom: 1px solid rgba(194, 65, 12, .35); }
.read-body code {
  font-family: var(--mono);
  font-size: .85em;
  background: #F1EDE4;
  padding: 2px 5px;
}
.read-body pre {
  background: #F1EDE4;
  border-left: 3px solid var(--ink);
  padding: 18px 20px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.7;
}
.read-body pre code { background: transparent; padding: 0; }
.read-body ul, .read-body ol { padding-left: 1.3em; margin: 0 0 1.35em; }
.read-body li { margin-bottom: .35em; }
.read-body hr { border: 0; border-top: 1px solid var(--rule); margin: 2.2em 0; }
.read-body table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 1.6em 0; }
.read-body th, .read-body td { border-bottom: 1px solid var(--rule); padding: 10px 12px; text-align: left; }
.read-body th { font-family: var(--mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-soft); }

/* 首字母下沉 */
.dropcap > p:first-of-type::first-letter {
  float: left;
  font-size: 4.1em;
  line-height: 0.86;
  padding: 0.06em 0.12em 0 0;
  font-weight: 700;
  color: var(--cinnabar);
}

.read-end {
  text-align: center;
  color: var(--cinnabar);
  margin: 48px 0 24px;
  letter-spacing: 1em;
}

/* ---------- 相关内容 ---------- */

.related {
  max-width: 720px;
  margin: 0 auto;
  padding-top: 10px;
  border-top: 1px solid var(--ink);
}
.related-title {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 400;
  margin: 22px 0 4px;
}

/* ---------- 分页 ---------- */

.pager {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 34px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
}
.pager a { border-bottom: 1px solid var(--ink); padding-bottom: 2px; }
.pager a:hover { color: var(--cinnabar); border-color: var(--cinnabar); }
.pager-no { color: var(--ink-soft); }

/* ---------- 搜索 ---------- */

.search-wide {
  display: flex;
  gap: 0;
  margin: 28px 0 8px;
  border-bottom: 2px solid var(--ink);
}
.search-wide input {
  flex: 1;
  border: 0;
  background: transparent;
  font-family: var(--serif);
  font-size: 28px;
  padding: 10px 4px;
  outline: none;
  color: var(--ink);
}
.search-wide button {
  border: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: 0.2em;
  padding: 0 26px;
  cursor: pointer;
}
.search-wide button:hover { background: var(--cinnabar); }

/* ---------- 空状态 ---------- */

.empty-state {
  padding: 70px 0;
  text-align: center;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--rule);
}
.empty-state.tall { padding: 130px 0; border: 0; }
.empty-hint { font-family: var(--mono); font-size: 12px; letter-spacing: .1em; }
.empty-hint a { color: var(--cinnabar); border-bottom: 1px solid var(--cinnabar); }
.error-no {
  font-size: 120px;
  line-height: 1;
  font-weight: 700;
  color: var(--rule);
  letter-spacing: -0.04em;
}

/* ---------- 页脚 ---------- */

.colophon {
  max-width: 1440px;
  margin: 0 auto;
  padding: 34px 48px 60px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px 40px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
}
.colophon strong { font-family: var(--serif); font-size: 18px; color: var(--ink); margin-right: 14px; letter-spacing: .1em; }
.colophon-links { display: flex; gap: 20px; }
.colophon-links a:hover { color: var(--cinnabar); }
.colophon-copy { grid-column: 1 / -1; border-top: 1px solid var(--rule); padding-top: 14px; }

/* ---------- 响应式 ---------- */

@media (max-width: 1080px) {
  .masthead { padding: 26px 28px 14px; }
  .shell { grid-template-columns: 1fr; gap: 28px; padding: 28px 28px 48px; }
  .rails { position: static; border-right: 0; border-bottom: 1px solid var(--rule); padding-right: 0; padding-bottom: 18px; }
  .rails nav { flex-direction: row; flex-wrap: wrap; gap: 0 20px; }
  .rail { border-bottom: 0; border-left: 0; padding: 6px 0; gap: 6px; }
  .rails-foot { display: none; }
  .paper-title { font-size: 42px; }
  .read-title { font-size: 34px; }
  .stream-title { font-size: 25px; }
  .colophon { padding: 28px; grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  body { font-size: 17px; }
  .masthead { flex-direction: column; align-items: flex-start; gap: 16px; }
  .brand-cn { font-size: 36px; }
  .masthead-tools { width: 100%; justify-content: space-between; }
  .search input { width: 120px; }
  .read-title, .paper-title { font-size: 30px; }
  .read-body { font-size: 17px; }
  .search-wide input { font-size: 20px; }
}