/* ===========================================================
   慢变量 · 编辑版式
   全站墨色 / 纸色的极简杂志风，深色模式下自动反转。
   =========================================================== */

:root {
  --paper: #faf8f3;
  --paper-2: #f2eee4;
  --paper-3: #e9e3d6;
  --ink: #17140f;
  --ink-2: #423b32;
  --ink-3: #7d7468;
  --rule: #ded5c5;
  --accent: #a3372a;
  --accent-ink: #8a2b20;

  --serif: "Iowan Old Style", "Songti SC", "Noto Serif SC", "Source Han Serif SC",
    STSong, "SimSun", Georgia, serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui,
    -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --w: 1120px;
  --read: 42rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #14120f;
    --paper-2: #1c1915;
    --paper-3: #252119;
    --ink: #f0ece3;
    --ink-2: #c3bcaf;
    --ink-3: #8d8478;
    --rule: #322d26;
    --accent: #d4695a;
    --accent-ink: #e08b7d;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

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

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

/* ---------- 骨架 ---------- */

.wrap {
  width: 100%;
  max-width: var(--w);
  margin: 0 auto;
  padding: 0 28px;
}

@media (max-width: 640px) {
  .wrap {
    padding: 0 20px;
  }
}

/* ---------- 刊头 ---------- */

.masthead {
  padding-top: 22px;
}

.masthead-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-family: var(--sans);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  text-transform: uppercase;
  padding-bottom: 14px;
  flex-wrap: wrap;
}

.masthead-top .issue {
  font-variant-numeric: tabular-nums;
}

.masthead-top .issue em {
  font-style: normal;
  color: var(--ink-2);
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav a {
  position: relative;
  padding-bottom: 2px;
  transition: color 0.18s ease;
}

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

.nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -3px;
  height: 2px;
  background: var(--accent);
}

.masthead-main {
  text-align: center;
  padding: 26px 0 30px;
}

.wordmark {
  display: inline-block;
  font-family: var(--serif);
  font-size: clamp(40px, 7.2vw, 72px);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: 0.16em;
  text-indent: 0.16em; /* 抵消末字右侧字距，视觉居中 */
  color: var(--ink);
}

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

.tagline {
  margin: 14px 0 0;
  font-size: 12.5px;
  letter-spacing: 0.28em;
  text-indent: 0.28em;
  color: var(--ink-3);
}

.rule-double {
  height: 4px;
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--rule);
}

@media (max-width: 640px) {
  .masthead-main {
    padding: 20px 0 24px;
  }
  .tagline {
    font-size: 11px;
    letter-spacing: 0.18em;
    text-indent: 0.18em;
  }
  .nav {
    gap: 16px;
  }
}

/* ---------- 首页：头条 ---------- */

main {
  display: block;
}

.hero {
  padding: 46px 0 44px;
  border-bottom: 1px solid var(--rule);
  text-align: center;
}

.overline {
  font-size: 11px;
  letter-spacing: 0.26em;
  text-indent: 0.26em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 20px;
}

.hero h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(28px, 4.4vw, 46px);
  line-height: 1.32;
  letter-spacing: 0.01em;
  margin: 0 auto;
  max-width: 20em;
  text-wrap: balance;
}

.hero h1 a:hover {
  color: var(--accent-ink);
}

.hero .lede {
  margin: 22px auto 0;
  max-width: 36em;
  font-family: var(--serif);
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--ink-2);
}

.byline {
  margin-top: 24px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}

.byline .dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--rule);
}

/* ---------- 首页：两栏 ---------- */

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 268px;
  gap: 64px;
  padding: 8px 0 0;
}

@media (max-width: 940px) {
  .layout {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 40px 0 6px;
  border-bottom: 1px solid var(--ink);
  margin-bottom: 4px;
}

.section-head h2 {
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-indent: 0.2em;
  margin: 0;
}

.section-head .more {
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--ink-3);
}

.section-head .more:hover {
  color: var(--accent);
}

/* 文章索引列表 */
.index-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.index-item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 8px;
  padding: 26px 0 24px;
  border-bottom: 1px solid var(--rule);
}

.index-item .num {
  font-family: var(--serif);
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.06em;
  padding-top: 7px;
  font-variant-numeric: tabular-nums;
}

.index-item .meta {
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--ink-3);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.index-item .meta .topic {
  color: var(--accent);
  font-weight: 600;
}

.index-item h3 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.45;
  margin: 0 0 8px;
  text-wrap: balance;
}

.index-item h3 a:hover {
  color: var(--accent-ink);
}

.index-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-2);
}

@media (max-width: 640px) {
  .index-item {
    grid-template-columns: 32px minmax(0, 1fr);
    padding: 22px 0 20px;
  }
  .index-item .num {
    font-size: 11px;
  }
  .index-item h3 {
    font-size: 19px;
  }
}

/* ---------- 侧栏 ---------- */

.aside {
  padding-top: 40px;
}

@media (min-width: 941px) {
  .aside-inner {
    position: sticky;
    top: 28px;
  }
}

@media (max-width: 940px) {
  .aside {
    padding-top: 8px;
  }
}

.aside-block {
  border-top: 2px solid var(--ink);
  padding: 16px 0 30px;
}

.aside-block h3 {
  font-family: var(--serif);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-indent: 0.18em;
  margin: 0 0 14px;
  color: var(--ink);
}

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

.topic-list li {
  border-bottom: 1px solid var(--rule);
}

.topic-list li:last-child {
  border-bottom: none;
}

.topic-list a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 0;
  font-size: 14px;
  transition: color 0.16s ease;
}

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

.topic-list .count {
  font-family: var(--serif);
  font-size: 12px;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}

.aside-note {
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--ink-2);
  margin: 0 0 14px;
}

.aside-link {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--accent);
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}

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

/* ---------- 文章页 ---------- */

.article-wrap {
  max-width: var(--read);
  margin: 0 auto;
  padding: 52px 0 40px;
}

.article-head {
  text-align: center;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 40px;
}

.article-head .topic-line {
  font-size: 11.5px;
  letter-spacing: 0.22em;
  text-indent: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 18px;
}

.article-head h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(27px, 4vw, 40px);
  line-height: 1.36;
  margin: 0;
  text-wrap: balance;
}

.article-head .lede {
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.95;
  color: var(--ink-2);
  margin: 20px auto 0;
  max-width: 32em;
}

.article-meta {
  margin-top: 26px;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}

.article-meta .dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--rule);
}

/* 正文排版 */
.prose {
  font-family: var(--serif);
  font-size: 17.5px;
  line-height: 2.05;
  color: var(--ink);
  letter-spacing: 0.01em;
}

.prose > *:first-child {
  margin-top: 0;
}

.prose p {
  margin: 0 0 1.55em;
}

.prose p + p {
  text-indent: 0;
}

.prose h2 {
  font-size: 23px;
  font-weight: 600;
  line-height: 1.5;
  margin: 2.6em 0 0.9em;
  padding-top: 1.1em;
  border-top: 1px solid var(--rule);
  letter-spacing: 0.01em;
}

.prose h2::before {
  content: "";
  display: block;
  width: 28px;
  height: 2px;
  background: var(--accent);
  margin-bottom: 18px;
}

.prose h3 {
  font-size: 19px;
  font-weight: 600;
  margin: 2em 0 0.7em;
  line-height: 1.6;
}

.prose ul,
.prose ol {
  margin: 0 0 1.55em;
  padding-left: 1.35em;
}

.prose li {
  margin-bottom: 0.5em;
  line-height: 1.95;
}

.prose li::marker {
  color: var(--ink-3);
}

.prose blockquote {
  margin: 2em 0;
  padding: 2px 0 2px 24px;
  border-left: 2px solid var(--accent);
  color: var(--ink-2);
  font-size: 17px;
}

.prose blockquote p {
  margin-bottom: 0.9em;
}

.prose blockquote p:last-child {
  margin-bottom: 0;
}

.prose hr {
  border: none;
  text-align: center;
  margin: 2.8em 0;
  height: 1em;
  line-height: 1;
}

.prose hr::before {
  content: "· · ·";
  letter-spacing: 0.8em;
  color: var(--ink-3);
  font-size: 14px;
}

.prose strong {
  font-weight: 600;
  color: var(--ink);
}

.prose em {
  font-style: italic;
  color: var(--ink-2);
}

.prose a {
  color: var(--accent-ink);
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
  transition: border-color 0.16s ease;
}

.prose a:hover {
  border-bottom-color: var(--accent);
}

.prose img {
  margin: 2.2em 0;
  width: 100%;
}

/* 竖图（人物像等）收窄居中，避免整栏被一张人像填满 */
.prose figure img.tall {
  width: 100%;
  max-width: 380px;
  margin: 0 auto;
}

.prose figure {
  margin: 2.2em 0;
}

.prose figcaption {
  font-family: var(--sans);
  font-size: 12.5px;
  color: var(--ink-3);
  text-align: center;
  margin-top: 10px;
  line-height: 1.7;
}

.prose code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--paper-2);
  padding: 0.15em 0.4em;
  border-radius: 2px;
}

.prose pre {
  background: var(--paper-2);
  padding: 18px 20px;
  overflow-x: auto;
  margin: 2em 0;
  border-left: 2px solid var(--accent);
  font-size: 13.5px;
  line-height: 1.75;
}

.prose pre code {
  background: none;
  padding: 0;
  font-size: inherit;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--sans);
  font-size: 13.5px;
  margin: 2em 0;
  line-height: 1.65;
}

.prose th {
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid var(--ink);
  padding: 10px 12px 10px 0;
}

.prose td {
  border-bottom: 1px solid var(--rule);
  padding: 10px 12px 10px 0;
  vertical-align: top;
}

.prose th:last-child,
.prose td:last-child {
  padding-right: 0;
}

/* 文章尾 */
.article-foot {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 2px solid var(--ink);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--ink-3);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--ink-2);
  border: 1px solid var(--rule);
  padding: 3px 9px;
  border-radius: 999px;
}

.tag:hover {
  border-color: var(--accent);
  color: var(--accent-ink);
}

/* 上下篇 */
.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--rule);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  margin-top: 40px;
}

.pager a {
  background: var(--paper);
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: background 0.18s ease;
}

.pager a:hover {
  background: var(--paper-2);
}

.pager .dir {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink-3);
  text-transform: uppercase;
}

.pager .t {
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.6;
  font-weight: 600;
}

.pager .next {
  text-align: right;
  align-items: flex-end;
}

.pager .empty {
  background: var(--paper);
}

@media (max-width: 640px) {
  .prose {
    font-size: 16.5px;
    line-height: 1.95;
  }
  .prose h2 {
    font-size: 20px;
  }
  .article-wrap {
    padding-top: 36px;
  }
  .pager {
    grid-template-columns: 1fr;
  }
}

/* ---------- 归档 / 列表页 ---------- */

.page-head {
  padding: 48px 0 28px;
  border-bottom: 2px solid var(--ink);
}

.page-head h1 {
  font-family: var(--serif);
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 600;
  margin: 0;
  letter-spacing: 0.02em;
}

.page-head p {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--ink-2);
  max-width: 36em;
}

.year-group {
  margin-top: 44px;
}

.year-label {
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--ink-3);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 10px;
  margin-bottom: 6px;
  font-variant-numeric: tabular-nums;
}

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

.archive-list li {
  border-bottom: 1px solid var(--rule);
}

.archive-list a {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr) auto;
  gap: 18px;
  align-items: baseline;
  padding: 16px 0;
  transition: color 0.16s ease;
}

.archive-list a:hover .t {
  color: var(--accent-ink);
}

.archive-list .d {
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
}

.archive-list .t {
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.6;
}

.archive-list .tp {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-3);
  white-space: nowrap;
}

@media (max-width: 640px) {
  .archive-list a {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 12px;
  }
  .archive-list .tp {
    display: none;
  }
  .archive-list .t {
    font-size: 16px;
  }
}

/* ---------- 关于页 ---------- */

.about-body {
  max-width: 640px;
  padding: 44px 0 20px;
}

.about-body p {
  font-family: var(--serif);
  font-size: 17px;
  line-height: 2.05;
  color: var(--ink);
  margin: 0 0 1.5em;
}

/* ---------- 页脚 ---------- */

.footer {
  margin-top: 72px;
  border-top: 4px double var(--ink);
  padding: 30px 0 56px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 32px;
  align-items: baseline;
  justify-content: space-between;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-3);
}

.footer-inner .brand {
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--ink-2);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a:hover {
  color: var(--accent);
}

/* ---------- 空状态 ---------- */

.empty-state {
  padding: 80px 0;
  text-align: center;
  color: var(--ink-3);
  font-family: var(--serif);
  font-size: 16px;
}