:root{
  --bg:#0b0f14;
  --bg-soft:#0e141b;
  --panel:#111823;
  --line:#1e2936;
  --fg:#e6edf3;
  --fg-dim:#9fb0c0;
  --muted:#6f8092;
  --accent:#4cc9f0;
  --accent-2:#7b8cff;
  --radius:14px;
  --wrap:860px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:
    radial-gradient(1100px 520px at 12% -12%, rgba(76,201,240,.10), transparent 60%),
    radial-gradient(900px 460px at 88% -6%, rgba(123,140,255,.09), transparent 62%),
    linear-gradient(180deg,#0b0f14 0%,#0a0e13 100%);
  background-attachment:fixed;
  color:var(--fg);
  font:16px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.35;letter-spacing:.2px;word-break:keep-all}
h2{font-size:1.06rem;color:var(--fg-dim);font-weight:600;margin:44px 0 14px;text-transform:none}
p{text-wrap:pretty}
img{max-width:100%}

/* header */
.site-header{
  position:sticky;top:0;z-index:10;
  backdrop-filter:blur(10px);
  background:rgba(11,15,20,.78);
  border-bottom:1px solid var(--line);
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:62px}
.brand{display:flex;align-items:center;gap:10px;color:var(--fg);font-weight:600;letter-spacing:.4px;white-space:nowrap}
.brand:hover{text-decoration:none}
.mark{
  width:20px;height:20px;flex:0 0 20px;border-radius:6px;
  background:
    radial-gradient(circle at 32% 32%, #ffffff 0 12%, transparent 13%),
    conic-gradient(from 210deg,var(--accent),var(--accent-2) 65%,var(--accent));
  box-shadow:0 0 14px rgba(76,201,240,.35);
}
.site-header nav{display:flex;gap:6px}
.site-header nav a{color:var(--fg-dim);padding:6px 12px;border-radius:999px;font-size:.94rem;white-space:nowrap}
.site-header nav a:hover{background:rgba(255,255,255,.05);color:var(--fg);text-decoration:none}
.site-header nav a.on{color:var(--fg);background:rgba(76,201,240,.12);box-shadow:inset 0 0 0 1px rgba(76,201,240,.28)}

main{flex:1 0 auto;padding-bottom:64px}

/* hero */
.hero{padding:62px 0 8px}
.hero h1{
  font-size:clamp(1.65rem,4.4vw,2.35rem);
  margin:0 0 14px;
  background:linear-gradient(92deg,#eaf3fb 12%,var(--accent) 58%,var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p{color:var(--fg-dim);max-width:60ch;margin:0}
.btn{display:inline-block;margin-top:14px;padding:9px 18px;border-radius:999px;border:1px solid rgba(76,201,240,.4);color:var(--accent);background:rgba(76,201,240,.08)}
.btn:hover{text-decoration:none;background:rgba(76,201,240,.16)}

/* cards */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(256px,1fr));gap:14px}
.card{
  display:block;padding:18px 18px 16px;
  background:linear-gradient(180deg,var(--panel),var(--bg-soft));
  border:1px solid var(--line);border-radius:var(--radius);
  color:inherit;transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease;
}
.card:hover{text-decoration:none;transform:translateY(-2px);border-color:rgba(76,201,240,.42);box-shadow:0 10px 30px rgba(2,8,18,.5)}
.card h3{margin:0 0 8px;font-size:1rem}
.card p{margin:0 0 10px;color:var(--muted);font-size:.92rem;line-height:1.7}
.card .more{font-size:.86rem;color:var(--accent)}

/* posts list */
.posts{list-style:none;padding:0;margin:0;border-top:1px solid var(--line)}
.posts li{display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding:13px 2px;border-bottom:1px solid var(--line)}
.posts time{color:var(--muted);font-size:.86rem;white-space:nowrap;font-variant-numeric:tabular-nums}

/* article */
.post{padding-top:52px}
.post h1{font-size:clamp(1.4rem,3.6vw,1.85rem);margin:0 0 6px}
.post .meta{color:var(--muted);font-size:.88rem;margin:0 0 22px}
.post p{color:#d3dde7;margin:0 0 16px}
.post h2{margin:30px 0 12px}

/* timeline */
.timeline{list-style:none;padding:0;margin:0}
.timeline li{display:flex;gap:16px;padding:9px 0;border-bottom:1px dashed var(--line)}
.timeline time{color:var(--accent);font-size:.88rem;white-space:nowrap;font-variant-numeric:tabular-nums}
.timeline span{color:#cfd9e3;font-size:.94rem}

/* footer */
.site-footer{flex:0 0 auto;border-top:1px solid var(--line);background:rgba(8,11,15,.6)}
.site-footer .wrap{padding-top:22px;padding-bottom:26px}
.site-footer p{margin:0;color:var(--fg-dim);font-size:.86rem}
.site-footer .muted{color:var(--muted);margin-top:4px}

@media (max-width:520px){
  .site-header .wrap{height:56px}
  .hero{padding:40px 0 4px}
  .posts li{flex-direction:column;gap:2px}
}