/* ============================================================
   Personal homepage - editorial layout, Cactus-inspired palette.
   Colors live in :root below; content lives in index.html.
   ============================================================ */

:root{
  --bg:#fafafa;        /* Cactus background */
  --ink:#22272a;       /* body text */
  --muted:#666;        /* secondary text */
  --soft:rgba(86,124,119,.85);
  --rule:#e3e3e3;      /* hairlines */
  --accent:#cc2a41;    /* Cactus red */
  --mono:"Menlo","Meslo LG",ui-monospace,SFMono-Regular,Consolas,"Microsoft YaHei",monospace;
  --sans:-apple-system,system-ui,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --serif:Georgia,"Songti SC","Times New Roman",serif;
  --max:1080px;
}
html[data-theme=dark]{
  --bg:#202020; --ink:#dcdcdc; --muted:#8f8f8f; --soft:rgba(140,170,165,.85); --rule:#343434;
}

*,*::before,*::after{box-sizing:border-box}
html{
  border-top:2px solid var(--ink);            /* Cactus signature top rule */
  -webkit-text-size-adjust:100%;
}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font:400 16.5px/1.75 var(--sans);
  -webkit-font-smoothing:antialiased;
}
.wrap{
  max-width:var(--max);margin:0 auto;padding:56px 28px 72px;
  display:grid;grid-template-columns:290px 1fr;gap:64px;
}

/* ---------- Sidebar ---------- */
aside{position:sticky;top:56px;align-self:start}
.name{
  font-family:var(--serif);font-weight:400;
  font-size:clamp(38px,5.6vw,58px);line-height:1;letter-spacing:-.02em;
  margin:0 0 12px;
}
.role{color:var(--muted);font-size:15px;margin:0 0 26px}

.social{display:flex;flex-direction:column;gap:7px;margin-bottom:26px}
.social a{
  display:inline-flex;align-items:center;gap:9px;
  font:400 13.5px/1.6 var(--mono);color:var(--ink);text-decoration:none;
  letter-spacing:.01em;width:max-content;
}
.social a span{border-bottom:1px solid transparent;padding-bottom:1px}
.social a:hover span{border-bottom-color:var(--accent);color:var(--accent)}
.social a:hover .arw{color:var(--accent)}

/* icons */
.ic{width:16px;height:16px;flex:0 0 auto;fill:none;stroke:currentColor;
    stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.social a .ic{color:var(--muted)}
.social a:hover .ic{color:var(--accent)}
.arw{width:13px;height:13px;color:var(--muted);opacity:.8}

/* nav: Cactus-style dotted separators */
.sitenav{display:flex;flex-wrap:wrap;align-items:center;margin-bottom:24px}
.sitenav a{
  font:400 13.5px/1 var(--mono);color:var(--accent);text-decoration:none;
  letter-spacing:.01em;
}
.sitenav a:hover{color:var(--ink)}
.sitenav a + a{
  margin-left:11px;padding-left:12px;border-left:1px dotted var(--accent);
}

.theme{
  background:none;border:1px solid var(--rule);border-radius:5px;
  color:var(--muted);cursor:pointer;padding:5px 7px;line-height:0;
}
.theme:hover{color:var(--accent);border-color:var(--accent)}
.theme .ic{width:15px;height:15px}

/* ---------- Main content ---------- */
.lead{
  font-size:clamp(18px,2.1vw,22px);line-height:1.62;
  margin:0 0 54px;max-width:32em;
}
.lead em{font-style:normal;color:var(--accent)}

section{margin-bottom:48px;scroll-margin-top:24px}
h2{
  display:flex;align-items:center;gap:8px;
  font:400 13px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;
  color:var(--soft);margin:0 0 16px;padding-bottom:12px;
  border-bottom:1px dashed var(--rule);
}
h2 .hash{color:var(--accent);font-weight:700;font-size:15px}
h2 .ic{width:14px;height:14px;color:var(--soft)}

.item{
  display:grid;grid-template-columns:104px 1fr;gap:22px;
  padding:15px 0;border-bottom:1px dashed var(--rule);
}
.item .when{font:400 12.5px/1.9 var(--mono);color:var(--muted);letter-spacing:.02em}
.item h3{margin:0 0 4px;font-size:18.5px;font-weight:600;letter-spacing:-.01em;line-height:1.45}
.item p{margin:0;color:var(--muted);font-size:15.5px}
.item .ttl{color:var(--ink)}

.item h3 a{
  color:var(--ink);text-decoration:underline;
  text-decoration-color:rgba(204,42,65,.35);
  text-decoration-thickness:2px;text-underline-offset:4px;
}
.item h3 a:hover{text-decoration-color:var(--accent);color:var(--accent)}

main a{color:var(--ink)}
main p a{text-decoration:underline;text-decoration-color:rgba(204,42,65,.35);
  text-decoration-thickness:1.5px;text-underline-offset:3px}
main p a:hover{color:var(--accent);text-decoration-color:var(--accent)}

.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.tags span{
  font:400 12px/1.6 var(--mono);color:var(--soft);
  border:1px solid var(--rule);border-radius:3px;padding:1px 7px;
}

/* ---------- Footer ---------- */
footer{
  grid-column:1/-1;margin-top:16px;padding-top:18px;border-top:1px dashed var(--rule);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  font:400 12.5px/1.8 var(--mono);color:var(--muted);
}
footer a{color:var(--muted);text-decoration:underline;text-underline-offset:3px}
footer a:hover{color:var(--accent)}

/* ---------- Justify long paragraphs ---------- */
@media (min-width:700px){ .item p,.lead{text-align:justify} }

/* ---------- Accessibility ---------- */
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:3px}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}

/* ---------- Mobile ---------- */
@media (max-width:880px){
  .wrap{grid-template-columns:1fr;gap:34px;padding:40px 20px 56px}
  aside{position:static}
  .name{font-size:clamp(34px,9vw,46px)}
  .item{grid-template-columns:1fr;gap:4px}
  .lead{margin-bottom:36px}
}