/* vlog.bluecatbot.com — trilingual editorial blog. Dark warm theme. */
:root{
  --bg:#0e0d0b; --bg-soft:#16140f; --card:#1b1813; --line:#2c2820;
  --ink:#ece6d8; --ink-soft:#b3aa97; --ink-dim:#7d7565;
  --accent:#d98c3f; --accent-soft:#caa86a;
  --tech:#5fa8d3; --psych:#c77dba; --health:#6cc08a; --science:#d98c3f;
  --serif:"Noto Serif SC","Noto Serif JP",Georgia,"Songti SC",serif;
  --sans:"Inter","Noto Sans SC","Noto Sans JP","PingFang SC","Hiragino Sans",system-ui,sans-serif;
  --wrap:760px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);
  line-height:1.75;-webkit-font-smoothing:antialiased;font-size:17px}
a{color:var(--accent-soft);text-decoration:none}
a:hover{color:var(--accent)}
img{max-width:100%}

/* ---- header / lang switch ---- */
.topbar{position:sticky;top:0;z-index:20;backdrop-filter:blur(10px);
  background:rgba(14,13,11,.82);border-bottom:1px solid var(--line)}
.topbar-inner{max-width:var(--wrap);margin:0 auto;padding:.7rem 1.2rem;
  display:flex;align-items:center;justify-content:space-between;gap:1rem}
.brand{font-family:var(--serif);font-weight:700;font-size:1.15rem;letter-spacing:.02em;color:var(--ink)}
.brand b{color:var(--accent)}
.langsw{display:flex;gap:.25rem;border:1px solid var(--line);border-radius:999px;padding:.2rem}
.langsw button{background:none;border:0;color:var(--ink-dim);font:inherit;font-size:.8rem;
  padding:.25rem .7rem;border-radius:999px;cursor:pointer;transition:.15s}
.langsw button.on{background:var(--accent);color:#1a140c;font-weight:600}
.langsw button:hover:not(.on){color:var(--ink)}

/* ---- hero ---- */
.hero{max-width:var(--wrap);margin:0 auto;padding:3.4rem 1.2rem 1.4rem}
.hero h1{font-family:var(--serif);font-size:2.4rem;line-height:1.25;margin:.2rem 0 .6rem}
.hero p{color:var(--ink-soft);font-size:1.08rem;margin:0;max-width:42ch}
.hero .date{color:var(--ink-dim);font-size:.82rem;letter-spacing:.08em;text-transform:uppercase}

/* ---- domain cards ---- */
.grid{max-width:var(--wrap);margin:2rem auto 4rem;padding:0 1.2rem;
  display:grid;grid-template-columns:1fr 1fr;gap:1rem}
@media(max-width:620px){.grid{grid-template-columns:1fr}.hero h1{font-size:1.9rem}}
.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:1.3rem 1.3rem 1.4rem;transition:.18s;position:relative;overflow:hidden}
.card:hover{transform:translateY(-3px);border-color:var(--c,var(--accent))}
.card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c,var(--accent))}
.card .tag{font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--c,var(--accent));font-weight:600}
.card h2{font-family:var(--serif);font-size:1.22rem;margin:.45rem 0 .5rem;color:var(--ink);line-height:1.35}
.card p{margin:0;color:var(--ink-soft);font-size:.94rem}
.card .src{margin-top:.8rem;font-size:.76rem;color:var(--ink-dim)}

/* ---- article ---- */
.post{max-width:var(--wrap);margin:0 auto;padding:2.6rem 1.2rem 1rem}
.post .kicker{font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--c,var(--accent));font-weight:600}
.post h1{font-family:var(--serif);font-size:2.05rem;line-height:1.28;margin:.5rem 0 .7rem}
.post .meta{color:var(--ink-dim);font-size:.84rem;margin-bottom:.4rem}
.post .lede{font-size:1.12rem;color:var(--ink-soft);font-style:italic;border-left:2px solid var(--c,var(--accent));padding-left:1rem;margin:1.4rem 0}
.post h2{font-family:var(--serif);font-size:1.4rem;margin:2.2rem 0 .6rem}
.post p{margin:1rem 0}
.post blockquote{margin:1.6rem 0;padding:.4rem 0 .4rem 1.1rem;border-left:3px solid var(--accent);
  color:var(--ink);font-family:var(--serif);font-size:1.1rem}
.post .pull{background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;padding:1rem 1.2rem;margin:1.6rem 0}
.post .pull h3{margin:.1rem 0 .5rem;font-size:.95rem;color:var(--accent-soft);letter-spacing:.04em}
.post ul,.post ol{padding-left:1.3rem}
.post li{margin:.4rem 0}
.post .src-note{margin-top:2.4rem;padding-top:1.2rem;border-top:1px solid var(--line);
  font-size:.85rem;color:var(--ink-dim)}
.backlink{display:inline-block;max-width:var(--wrap);margin:1rem auto;padding:0 1.2rem;
  width:100%;font-size:.85rem}

/* ---- language visibility ---- */
[data-lang]{display:none}
[data-lang].active{display:block}
.card [data-lang]{display:none}
.card [data-lang].active{display:block}
span[data-lang].active{display:inline}

/* ---- inline figures (vlog-palette diagrams) ---- */
.post figure.fig{margin:1.9rem 0;background:var(--bg-soft);border:1px solid var(--line);border-radius:14px;padding:1.1rem 1.1rem .7rem}
.post figure.fig svg{display:block;width:100%;height:auto}
.post figure.fig figcaption{margin-top:.55rem;font-size:.8rem;color:var(--ink-dim);text-align:center;line-height:1.55}

footer{border-top:1px solid var(--line);margin-top:3rem;padding:2rem 1.2rem;text-align:center;color:var(--ink-dim);font-size:.82rem}
footer .disc{max-width:var(--wrap);margin:.6rem auto 0;font-size:.76rem;line-height:1.6}