/* Blog — same visual language as sakoi-cyber.me: pure black, faint grid, mono titles */
:root{--bg:#000;--panel:#070708;--panel-2:#0c0c0e;--line:#1c1c20;--line-2:#2a2a30;--fg:#f5f5f7;--muted:#9a9aa3;--dim:#5e5e67;--ok:#7ee2a8;--accent:#a78bfa;
  --display:"Inter Tight",ui-sans-serif,system-ui,sans-serif;--mono:"JetBrains Mono",ui-monospace,Menlo,monospace;color-scheme:dark}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--display);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.grid-bg{position:fixed;inset:0;z-index:-1;pointer-events:none;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:32px 32px;
  mask-image:radial-gradient(ellipse 80% 70% at 50% 30%,#000 20%,transparent 100%);-webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 30%,#000 20%,transparent 100%)}
.progress{position:fixed;left:0;top:0;height:2px;width:100%;z-index:50;background:linear-gradient(90deg,var(--accent),var(--ok));transform-origin:0 50%;transform:scaleX(0)}
:focus-visible{outline:1px solid var(--fg);outline-offset:3px;border-radius:6px}

.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px max(16px,calc((100% - 860px)/2));background:rgba(0,0,0,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px}
.logo{font-family:var(--mono);font-weight:600;font-size:13px;letter-spacing:-.04em;background:var(--fg);color:#000;border-radius:8px;padding:3px 7px}
.brand span:last-child{display:flex;flex-direction:column;line-height:1.1}
.brand small{font-family:var(--mono);font-size:10px;letter-spacing:.24em;text-transform:uppercase;color:var(--dim)}
.top nav{display:flex;gap:4px;flex-wrap:wrap}
.top nav a{font-family:var(--mono);font-size:13px;color:var(--muted);padding:6px 10px;border-radius:8px}
.top nav a:hover,.top nav a.on{color:var(--fg);background:rgba(255,255,255,.05)}
.top nav a.pf{color:var(--fg);border:1px solid var(--line-2)}

main{max-width:860px;margin:0 auto;padding:0 16px}
.hero{padding:72px 0 28px}
.hero.small{padding-bottom:10px}
.prompt{display:inline-flex;gap:10px;font-family:var(--mono);font-size:13px;padding:7px 14px;background:#121214;border:1px solid var(--line-2);border-radius:4px;color:#e6e6ea}
.prompt i{font-style:normal;color:var(--muted)}
h1{font-family:var(--mono);font-weight:600;font-size:clamp(34px,6vw,56px);letter-spacing:-.03em;line-height:1.1;margin:22px 0 12px}
.br{color:var(--dim)}
.lead{color:var(--muted);font-size:17px;margin:0 0 8px;max-width:62ch}
.kicker{display:block;font-family:var(--mono);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.filters button{font-family:var(--mono);font-size:12.5px;color:#cfcfd4;background:transparent;border:1px solid var(--line-2);border-radius:999px;padding:5px 12px;cursor:pointer}
.filters button small{color:var(--dim)}
.filters button.on{background:var(--fg);color:#000;border-color:var(--fg)}
.filters button.on small{color:#555}

.list{display:flex;flex-direction:column;gap:14px;padding:12px 0 60px}
.card{position:relative;display:flex;flex-direction:column;gap:8px;padding:24px;border:1px solid var(--line);border-radius:20px;background:linear-gradient(180deg,var(--panel-2),var(--panel));transition:border-color .2s,transform .2s}
.card:hover{border-color:var(--line-2);transform:translateY(-2px)}
.card.first{border-color:rgba(167,139,250,.35);background:radial-gradient(80% 120% at 100% 0%,rgba(167,139,250,.12),transparent 60%),linear-gradient(180deg,var(--panel-2),var(--panel))}
.card h2{margin:0;font-size:clamp(20px,2.6vw,25px);letter-spacing:-.03em;line-height:1.25}
.card p{margin:0;color:var(--muted);font-size:15px}
.card .go{font-family:var(--mono);font-size:12.5px;color:var(--accent);margin-top:4px}
.card.hide{display:none}
.meta{display:flex;gap:8px;font-family:var(--mono);font-size:12px;color:var(--dim)}
.tags{display:flex;flex-wrap:wrap;gap:6px}
.tag{font-family:var(--mono);font-size:12px;color:#cfcfd4;border:1px solid var(--line-2);border-radius:999px;padding:3px 10px;background:rgba(255,255,255,.02)}
a.tag:hover{border-color:var(--muted)}
.empty{font-family:var(--mono);color:var(--dim)}

/* article */
.post{padding:44px 0 60px}
.back{font-family:var(--mono);font-size:13px;color:var(--muted)}
.back:hover{color:var(--fg)}
.post-h{margin:26px 0 30px;padding-bottom:26px;border-bottom:1px solid var(--line)}
.post-h h1{font-family:var(--display);font-weight:700;letter-spacing:-.045em;font-size:clamp(32px,5vw,48px);margin:10px 0 14px}
.post-h .tags{margin-top:16px}
.toc{border:1px solid var(--line);border-radius:16px;padding:16px 20px;margin-bottom:30px;background:var(--panel)}
.toc ol{margin:10px 0 0;padding-left:20px;display:flex;flex-direction:column;gap:4px;font-size:14.5px}
.toc a{color:var(--muted)}.toc a:hover{color:var(--fg)}
.toc li.l3{margin-left:16px;font-size:13.5px}
.md{font-size:17px;line-height:1.8;color:#d6d6db}
.md h2{font-size:27px;letter-spacing:-.03em;line-height:1.25;margin:48px 0 14px;color:var(--fg);scroll-margin-top:80px}
.md h3{font-size:20px;margin:32px 0 10px;color:var(--fg);scroll-margin-top:80px}
.md h2 .anchor,.md h3 .anchor{opacity:0;margin-left:8px;color:var(--dim);font-family:var(--mono);font-size:.7em}
.md h2:hover .anchor,.md h3:hover .anchor{opacity:1}
.md p{margin:0 0 18px}
.md a{color:var(--ok);text-decoration:underline;text-underline-offset:3px}
.md strong{color:var(--fg)}
.md ul,.md ol{padding-left:22px;margin:0 0 18px}
.md li{margin:4px 0}
.md li::marker{color:var(--accent)}
.md blockquote{margin:0 0 18px;padding:6px 18px;border-left:2px solid var(--accent);color:var(--muted);background:rgba(167,139,250,.05);border-radius:0 10px 10px 0}
.md img{max-width:100%;border-radius:14px;border:1px solid var(--line)}
.md hr{border:0;border-top:1px solid var(--line);margin:40px 0}
.md table{border-collapse:collapse;width:100%;font-size:15px;display:block;overflow-x:auto;margin:0 0 18px}
.md th,.md td{border:1px solid var(--line);padding:9px 12px;text-align:left}
.md th{background:#0e0e11;color:var(--fg)}
.md code{font-family:var(--mono);font-size:.86em;background:#141417;border:1px solid var(--line);border-radius:6px;padding:1px 6px}
.md pre{position:relative;margin:0 0 20px;background:#08080a;border:1px solid var(--line);border-radius:14px;padding:18px;overflow-x:auto;line-height:1.6}
.md pre code{background:none;border:0;padding:0;font-size:14px;color:#d4d4d9}
.md div.highlighter-rouge{margin-bottom:20px}.md div.highlighter-rouge pre{margin:0}
.copy{position:absolute;top:10px;right:10px;font-family:var(--mono);font-size:11px;color:var(--muted);background:#141417;border:1px solid var(--line-2);border-radius:6px;padding:3px 8px;cursor:pointer;opacity:0;transition:opacity .2s}
.md pre:hover .copy{opacity:1}
.author{display:flex;gap:16px;align-items:flex-start;margin-top:50px;padding:22px;border:1px solid var(--line);border-radius:18px;background:var(--panel)}
.author .logo{font-size:15px;padding:8px 10px;flex:none}
.author p{margin:4px 0 8px;color:var(--muted);font-size:14.5px}
.author a{font-family:var(--mono);font-size:13px;color:var(--ok)}
.pn{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}
.pn a{display:flex;flex-direction:column;gap:2px;padding:16px 18px;border:1px solid var(--line);border-radius:16px;background:var(--panel-2);font-weight:600}
.pn a:hover{border-color:var(--line-2)}
.pn a.nx{text-align:right;grid-column:2}
.pn small{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--dim);font-weight:400}

.tagidx{display:flex;flex-direction:column;gap:22px;padding:10px 0 60px}
.tg{scroll-margin-top:80px;padding:20px;border:1px solid var(--line);border-radius:18px;background:var(--panel)}
.tg:target{border-color:var(--accent)}
.tg h2{margin:0 0 10px;font-family:var(--mono);font-size:18px}.tg h2 small{color:var(--dim);font-size:13px}
.tg ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.tg li{display:flex;justify-content:space-between;gap:16px}.tg time{font-family:var(--mono);font-size:12px;color:var(--dim);white-space:nowrap}
.tg a:hover{color:var(--ok)}

.foot{max-width:860px;margin:0 auto;padding:30px 16px 50px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-family:var(--mono);font-size:12px;color:var(--dim)}
.foot a:hover{color:var(--fg)}

/* rouge syntax highlighting (dark) */
.highlight .c,.highlight .c1,.highlight .cm,.highlight .cs{color:#6b7280;font-style:italic}
.highlight .k,.highlight .kd,.highlight .kn,.highlight .kr,.highlight .kc{color:#c084fc}
.highlight .s,.highlight .s1,.highlight .s2,.highlight .sb,.highlight .sh,.highlight .se{color:#7ee2a8}
.highlight .m,.highlight .mi,.highlight .mf,.highlight .mh{color:#fbbf24}
.highlight .nf,.highlight .fm,.highlight .nb{color:#60a5fa}
.highlight .nc,.highlight .nn{color:#f472b6}
.highlight .o,.highlight .ow{color:#f87171}
.highlight .nv,.highlight .vi,.highlight .na{color:#fda4af}
.highlight .gp{color:var(--ok)}

@media (max-width:600px){.top{padding:12px 16px}.top nav a{padding:5px 7px;font-size:12px}.hero{padding-top:44px}.pn{grid-template-columns:1fr}.pn a.nx{grid-column:auto}.md{font-size:16px}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}