:root {
  --bg: #ffffff;
  --fg: #2b2b2b;
  --muted: #8a8a8a;
  --line: #ececec;
  --accent: #8a2b2b;      /* 朱砂 */
  --aoko: #1f5fc0;        /* 蒼崎青子の青 */
  --code-bg: #f6f6f4;
  --maxw: 880px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16161a;
    --fg: #d9d9d9;
    --muted: #7f7f86;
    --line: #2a2a30;
    --accent: #d98a8a;
    --aoko: #6f9dee;
    --code-bg: #1e1e24;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans",
    "PingFang SC", "PingFang TC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.7;
}
#app {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 64px 32px 100px;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.loading { color: var(--muted); }

/* ---- home: identity ---- */
.namewrap {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  margin: 0 0 22px;
}
.namewrap .pinyin {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: .2em;
  margin: 0 0 3px 2px;
}
.namewrap .name {
  font-family: "LXGW WenKai Screen", serif;
  font-size: 34px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: .12em;
}
.bio { margin: 0 0 8px; }
.bio p { margin: 2px 0; }
.bio .tc {
  font-family: "LXGW WenKai Screen", "Songti TC", serif;
  letter-spacing: .05em;
}

/* ---- sections ---- */
.section { margin-top: 84px; }
.section > h2 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 24px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

/* ---- controls ---- */
.controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 20px; }
#search {
  flex: 1 1 180px;
  min-width: 140px;
  padding: 7px 11px;
  font: inherit;
  font-size: 15px;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 7px;
}
#search:focus { outline: none; border-color: var(--muted); }
.cats { display: flex; flex-wrap: wrap; gap: 6px; }
.cat {
  padding: 4px 10px;
  font-size: 13px;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 20px;
  cursor: pointer;
}
.cat:hover { color: var(--fg); }
.cat.active { color: var(--bg); background: var(--fg); border-color: var(--fg); }

/* ---- post list ---- */
.list { list-style: none; margin: 0; padding: 0; }
.list li { margin: 0; }
.list a.row {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 11px 0;
  color: var(--fg);
  border-bottom: 1px solid var(--line);
}
.list a.row:hover { text-decoration: none; }
.list a.row:hover .title { color: var(--accent); }
.row .date {
  flex: 0 0 auto;
  width: 92px;
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  color: var(--muted);
}
.row .rowmain { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; gap: 4px; }
.row .title { }
.row .snippet { font-size: 13.5px; line-height: 1.55; color: var(--muted); }
.row .tag { flex: 0 0 auto; font-size: 12.5px; color: var(--muted); }
.empty { color: var(--muted); padding: 12px 0; }

/* pager */
.pager { display: flex; align-items: center; justify-content: center; gap: 18px; margin-top: 30px; }
.pg {
  font: inherit; font-size: 20px; line-height: 1;
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  color: var(--fg); background: var(--bg);
  border: 1px solid var(--line); border-radius: 8px; cursor: pointer;
}
.pg:hover:not(:disabled) { border-color: var(--muted); color: var(--accent); }
.pg:disabled { opacity: .3; cursor: default; }
.pg-info { font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; }

mark {
  background: rgba(255, 209, 102, .5);
  color: #2b2b2b;
  border-radius: 2px;
  padding: 0 1px;
}
@media (prefers-color-scheme: dark) {
  mark { background: rgba(255, 209, 102, .34); color: #16161a; }
}

/* ---- academic ---- */
.acad { margin: 0; }
.acad .item { display: flex; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.acad .yrs { flex: 0 0 auto; width: 96px; font-variant-numeric: tabular-nums; color: var(--muted); font-size: 15px; }
.acad .body { flex: 1; }
.acad .deg { margin: 0; }
.acad .deg a {
  color: var(--fg);
  text-decoration: underline;
  text-decoration-color: var(--muted);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
}
.acad .deg a::after { content: "\2197"; margin-left: 3px; font-size: .8em; color: var(--muted); vertical-align: 1px; }
.acad .deg a:hover { color: var(--accent); text-decoration-color: currentColor; }
.acad .deg a:hover::after { color: var(--accent); }
.acad .sub { margin: 2px 0 0; color: var(--muted); font-size: 14.5px; }

/* contact email — plain muted text */
.sec-contact { margin: 18px 0 0; font-size: 14.5px; color: var(--muted); }

/* ---- article ---- */
.back { display: inline-block; font-size: 14px; color: var(--muted); margin-bottom: 28px; }
article h1 { font-size: 30px; line-height: 1.3; margin: 0 0 10px; }
.post-meta { font-size: 14px; color: var(--muted); margin-bottom: 36px; }
.post-meta a { color: var(--muted); text-decoration: underline; }
.post-meta a:hover { color: var(--accent); }

/* article body: Chinese renders in LXGW WenKai (Latin here follows too) */
.prose { font-family: "LXGW WenKai Screen", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; max-width: 46rem; }
.prose h2 { font-size: 22px; margin: 40px 0 12px; }
.prose h3 { font-size: 18px; margin: 30px 0 10px; }
.prose p { margin: 16px 0; }
.prose img { max-width: 100%; height: auto; }
.prose blockquote {
  margin: 20px 0; padding: 4px 18px;
  border-left: 3px solid var(--line); color: var(--muted);
}
.prose code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .88em; background: var(--code-bg);
  padding: .12em .4em; border-radius: 4px;
}
.prose pre {
  background: var(--code-bg); padding: 14px 16px;
  border-radius: 8px; overflow-x: auto;
}
.prose pre code { background: none; padding: 0; }
.prose hr { border: none; border-top: 1px solid var(--line); margin: 40px 0; }
.prose .video { position: relative; width: 100%; aspect-ratio: 16 / 9; margin: 24px 0; }
.prose .video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; border-radius: 8px; }
.prose .katex-display { overflow-x: auto; overflow-y: hidden; padding: 4px 0; }
.prose figure { margin: 24px 0; }
.prose figcaption { font-size: 13px; color: var(--muted); text-align: center; margin-top: 8px; }
.prose table { border-collapse: collapse; width: 100%; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--line); padding: 6px 12px; text-align: left; }

/* ---- epigraphs: 錦瑟 · 波斯 · Dillard · 魔法使いの夜 ---- */
.epigraphs {
  margin-top: 104px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.epigraphs > h2 { grid-column: 1 / -1; }   /* section title spans both columns */
.epi-col { display: flex; flex-direction: column; gap: 56px; min-width: 0; }
.epi { margin: 0; min-width: 0; }
.epi blockquote { margin: 0 0 12px; font-size: 15px; line-height: 1.85; color: var(--fg); overflow-wrap: anywhere; }
.epi figcaption { font-size: 12.5px; color: var(--muted); letter-spacing: .01em; }

/* 錦瑟 — Chinese */
.epi-zh blockquote { font-family: "LXGW WenKai Screen", serif; font-size: 16px; line-height: 2; }

/* 波斯 — RTL, Nastaliq */
.epi-fa { text-align: right; }
.epi-fa blockquote { font-family: "Noto Nastaliq Urdu", "SF Arabic", "Geeza Pro", serif; font-size: 18px; line-height: 2.7; }
.epi-fa figcaption { font-family: "SF Arabic", "Geeza Pro", "Noto Naskh Arabic", sans-serif; }

/* Dillard — English prose */
.epi-en blockquote { max-width: 60ch; }

/* 魔法使いの夜 — Japanese, Klee One, 竖排 */
.epi-ja {
  font-family: "Klee One", "Hiragino Mincho ProN", "Yu Mincho", serif;
  display: flex; flex-direction: column; align-items: flex-start;   /* 靠左，与錦瑟对齐 */
}
.epi-ja .bl-body {
  writing-mode: vertical-rl;
  -webkit-writing-mode: vertical-rl;
  max-height: 22em;              /* 到底后向左折成新列 */
  margin: 0 0 16px;
}
.epi-ja .bl-body p { margin: 0 0 0 1.2em; }   /* 列组之间留白（竖排里 margin-left = 列间距） */
.epi-ja .bl-sm { font-size: 13.5px; line-height: 2; }
.epi-ja .bl-lg { font-size: 17px; line-height: 2.3; }
.epi-ja .aoko { color: var(--aoko); }   /* 蒼崎青子 */
.epi-ja .usu  { color: var(--fg); }     /* 久遠寺有珠 */

@media (max-width: 640px) {
  .epigraphs { grid-template-columns: minmax(0, 1fr); gap: 48px; }
  .epi-col { min-width: 0; }
  .epi-en blockquote { max-width: none; }
  /* 小屏：日语从竖排改横排，随宽度换行，避免超出视口造成横向滚动/右侧被切 */
  .epi-ja { align-items: stretch; }
  .epi-ja .bl-body {
    writing-mode: horizontal-tb;
    -webkit-writing-mode: horizontal-tb;
    max-height: none;
  }
  .epi-ja .bl-body p { margin: 0 0 12px; }
  .epi-ja .bl-sm { line-height: 1.85; }
  .epi-ja .bl-lg { line-height: 1.95; }
}

.footer { margin-top: 104px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 13px; color: var(--muted); }

/* ---- responsive ---- */
@media (max-width: 820px) {          /* iPad / small laptop */
  #app { padding: 56px 28px 88px; }
}
@media (max-width: 560px) {          /* phone */
  body { font-size: 16px; }
  #app { padding: 40px 20px 72px; }
  .namewrap .name { font-size: 30px; }
  .namewrap .pinyin { font-size: 12px; letter-spacing: .16em; }
  .section { margin-top: 64px; }
  .epigraphs { margin-top: 80px; }
  .footer { margin-top: 80px; }
  article h1 { font-size: 26px; }
  .row .date { flex-basis: 82px; width: 82px; font-size: 13.5px; }
  .acad .yrs { width: 78px; font-size: 14px; }
}