:root{
  --bg:#292c31;
  --card:#303941;
  --text:#edf7fa;
  --muted:#b0c4cd;
  --border:#49616e;
  --accent:#9de5f5;
  --shadow: none;
  --radius: 4px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: Arial, Helvetica, sans-serif;
}

:root.light{
  --bg:#d8dfe2;
  --card:#e5eaec;
  --text:#1d2c35;
  --muted:#465965;
  --border:#a3b3bc;
  --accent:#17617e;
  --shadow: 0 4px 16px rgba(29,44,53,.06);
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family:var(--sans);
  background:var(--bg);
  color:var(--text);
  caret-color:transparent;
}
:read-write{ caret-color:var(--text); }
button,input,textarea{ font:inherit; }
a{ color:inherit; }
button:focus-visible,a:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:4px;
}

.hidden{ display:none !important; }

.topbar{
  position:sticky;
  top:12px;
  z-index:50;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  width:min(1320px, calc(100% - 48px));
  min-height:68px;
  margin:24px auto 0;
  padding:12px 24px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background: color-mix(in srgb, var(--bg) 96%, transparent);
  backdrop-filter: blur(8px);
}

.brand-link{
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color:inherit;
}

.logo{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(135deg, color-mix(in srgb, var(--accent) 70%, transparent), color-mix(in srgb, var(--card) 70%, transparent));
  border:1px solid var(--border);
  font-weight:900;
}

.brand-name{ font-size:22px; font-weight:500; letter-spacing:.16em; }
.brand-tag{ margin-top:4px; font-size:9px; letter-spacing:.18em; color:var(--muted); }

.nav{
  display:flex;
  gap:10px;
  align-items:center;
  flex-wrap:wrap;
}
.nav-link{
  text-decoration:none;
  color:var(--muted);
  padding:8px 10px;
  border-radius:var(--radius);
  border:1px solid transparent;
  font-weight:500;
  font-size:12px;
}
.nav-link:hover{ color:var(--text); border-color:var(--border); }
.nav-link.active{ color:var(--text); border-color:color-mix(in srgb, var(--accent) 40%, var(--border)); }

.top-actions{ display:flex; align-items:center; gap:10px; }
.iconbtn{
  border:1px solid var(--border);
  background:var(--card);
  color:var(--text);
  border-radius:var(--radius);
  padding:8px 10px;
  cursor:pointer;
  font-weight:900;
}
.iconbtn:hover{ border-color:color-mix(in srgb, var(--accent) 35%, var(--border)); }

.lang{ position:relative; }
.lang-menu{
  position:absolute;
  right:0; top:44px;
  width:160px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:14px;
  box-shadow:var(--shadow);
  padding:6px;
}
.lang-menu button{
  width:100%;
  text-align:left;
  border:0;
  background:transparent;
  color:var(--text);
  padding:10px 10px;
  border-radius:10px;
  cursor:pointer;
  font-weight:800;
}
.lang-menu button:hover{ background:color-mix(in srgb, var(--border) 40%, transparent); }

.shell{
  width:min(1368px, 100%);
  margin:0 auto;
  padding:18px 24px;
}

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}

.hero{
  position:relative;
  grid-column:1 / -1;
  padding:32px;
  background:linear-gradient(115deg, #c9dfe4, #e1ebed);
  color:#25383e;
  border-color:#a2c2cb;
}

.kicker{
  font-weight:500;
  color:#466772;
  letter-spacing:.12em;
  font-size:10px;
  text-transform:uppercase;
}
.hero-title{
  margin:14px 0 0;
  font-size:clamp(36px, 4.6vw, 66px);
  font-weight:500;
  line-height:1.05;
  letter-spacing:-.045em;
}
.hero-lead{
  margin:10px 0 0;
  max-width:78ch;
  color:#46616b;
  line-height:1.6;
  font-size:14px;
}

.hero-ctas{ margin-top:22px; display:flex; gap:10px; flex-wrap:wrap; }
.hero .btn{ background:#263e49; color:#f2f9fb; border-color:#263e49; }
.hero .btn.ghost{ background:transparent; color:#263e49; border-color:#7d9ca7; }
.hero-index{ position:absolute; right:24px; bottom:24px; font:9px var(--mono); letter-spacing:.1em; color:#46616b; }

.btn{
  border:1px solid var(--border);
  background:color-mix(in srgb, var(--accent) 14%, var(--card));
  color:var(--text);
  border-radius:var(--radius);
  padding:10px 12px;
  cursor:pointer;
  font-weight:600;
}
.btn:hover{ border-color:color-mix(in srgb, var(--accent) 40%, var(--border)); }
.btn.ghost{
  background:transparent;
  color:var(--text);
}
.smallbtn{ padding:8px 10px; font-size:13px; }

.search{
  display:flex;
  gap:8px;
  margin-top:10px;
}
.search input{
  flex:1;
  min-width:0;
  border:1px solid var(--border);
  background:var(--bg);
  color:var(--text);
  border-radius:var(--radius);
  padding:10px 12px;
  outline:none;
}
.search input:focus{ border-color:color-mix(in srgb, var(--accent) 45%, var(--border)); }

.row{ display:flex; align-items:center; justify-content:space-between; gap:10px; margin-top:10px; }
.h2{ margin:0; font-size:14px; font-weight:500; letter-spacing:.02em; }
.card-head{ padding:22px 24px 0; display:flex; align-items:center; justify-content:space-between; gap:12px; }
.section-index{ font:10px var(--mono); color:var(--muted); }
.home-layout{ display:grid; grid-template-columns:minmax(0, 1.25fr) minmax(0, 1fr); gap:16px; }
.home-layout > *{ min-width:0; }
.home-foundations,.home-browse{ grid-column:1 / -1; }
.home-foundations{ display:flex; align-items:center; gap:24px; padding:20px 24px; }
.home-foundations .card-head{ padding:0; min-width:140px; }
.home-search{ padding:18px 24px 0; font-size:12px; }
.home-search > .muted{ margin-left:12px; }

.mini{
  padding:0;
  display:grid;
  grid-template-columns:repeat(5, minmax(0, 1fr));
  gap:8px;
  flex:1;
}

.mini-item{
  border:1px solid var(--border);
  background:transparent;
  color:var(--text);
  border-radius:var(--radius);
  padding:9px 10px;
  cursor:pointer;
  font-weight:500;
  font-size:12px;
}
.mini-item:hover{ border-color:color-mix(in srgb, var(--accent) 35%, var(--border)); }

.pins{
  padding:16px 24px 24px;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.pinItem{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:18px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  cursor:pointer;
  text-decoration:none;
}
.pinItem:hover{ border-color:color-mix(in srgb, var(--accent) 35%, var(--border)); }
.pinName{ display:block; font-size:16px; line-height:1.4; font-weight:500; }
.pinDescription{ display:block; margin-top:8px; color:var(--muted); font-size:11px; line-height:1.5; }
.pinMeta{ color:var(--accent); font-weight:500; font-family:var(--mono); font-size:9px; text-align:right; max-width:100px; }

.featured{
  padding:8px 24px 18px;
  display:flex;
  flex-direction:column;
}
.featured .post{ min-height:0; border:0; border-bottom:1px solid var(--border); border-radius:0; }
.featured .post:last-child{ border-bottom:0; }
.featured .post-body{ padding:12px 0; gap:6px; }
.featured .post h3{ font-size:14px; font-weight:500; line-height:1.4; }
.featured .meta{ font:9px var(--mono); }
.featured .tagrow{ gap:5px; }
.featured .tag{ padding:3px 6px; font-size:9px; font-weight:500; }

.post{
  border:1px solid var(--border);
  border-radius:16px;
  overflow:hidden;
  cursor:pointer;
  display:flex;
  flex-direction:column;
  min-height:260px;
}
.post:hover{ border-color:color-mix(in srgb, var(--accent) 35%, var(--border)); }
.thumb{
  height:140px;
  background:linear-gradient(135deg, color-mix(in srgb, var(--accent) 18%, var(--bg)), color-mix(in srgb, var(--card) 70%, transparent));
  border-bottom:1px solid var(--border);
}
.thumb img{ width:100%; height:100%; object-fit:cover; display:block; }

.post-body{
  padding:12px;
  display:flex;
  flex-direction:column;
  gap:8px;
  flex:1;
}
.meta{
  color:var(--muted);
  font-size:12px;
  font-weight:900;
  display:flex;
  align-items:center;
  justify-content:flex-start;
  gap:10px;
}
.meta .date{ white-space:nowrap; }
.meta .tagrow{
  display:flex;
  gap:6px;
  flex-wrap:wrap;
  justify-content:flex-end;
}

.post h3{
  margin:0;
  font-size:16px;
  letter-spacing:-.2px;
}
.summary{
  margin:0;
  color:var(--muted);
  line-height:1.55;
  font-size:13px;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
  min-height: 3.8em; /* keeps cards even */
}

.tags{
  display:flex;
  gap:6px;
  flex-wrap:wrap;
}
.tag{
  border:1px solid var(--border);
  background:transparent;
  color:var(--muted);
  border-radius:999px;
  padding:5px 9px;
  font-size:12px;
  font-weight:900;
  cursor:pointer;
}
.tag:hover{ color:var(--text); border-color:color-mix(in srgb, var(--accent) 35%, var(--border)); }
.tag.active{
  color:var(--text);
  border-color:color-mix(in srgb, var(--accent) 45%, var(--border));
  background:color-mix(in srgb, var(--accent) 10%, transparent);
}

/* colored tags (genre-based) */
.tag.is-power{ border-color:color-mix(in srgb, #ff3b3b 40%, var(--border)); color:color-mix(in srgb, #ff3b3b 75%, var(--text)); }
.tag.is-control{ border-color:color-mix(in srgb, #2b6cff 45%, var(--border)); color:color-mix(in srgb, #2b6cff 80%, var(--text)); }
.tag.is-embedded{ border-color:color-mix(in srgb, #10b981 45%, var(--border)); color:color-mix(in srgb, #10b981 80%, var(--text)); }
.tag.is-theory{ border-color:color-mix(in srgb, #9aa3ad 45%, var(--border)); color:color-mix(in srgb, #9aa3ad 85%, var(--text)); }

.tag.more{
  cursor:default;
  opacity:.95;
}

.titles{
  padding:12px 16px 16px 16px;
  display:flex;
  flex-direction:column;
  gap:8px;
}
.title-item{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:12px;
  border:1px solid var(--border);
  border-radius:14px;
  cursor:pointer;
  text-decoration:none;
}
.title-item:hover{ border-color:color-mix(in srgb, var(--accent) 35%, var(--border)); }
.title-text{ font-weight:950; }
.title-date{ color:var(--muted); font-size:12px; font-family:var(--mono); }
.archive-meta{ display:flex; align-items:center; gap:8px; }
.latest-badge{
  display:inline-flex;
  align-items:center;
  border:1px solid color-mix(in srgb, var(--accent) 55%, var(--border));
  border-radius:999px;
  padding:3px 8px;
  color:var(--accent);
  background:color-mix(in srgb, var(--accent) 10%, transparent);
  font:700 10px var(--mono);
  line-height:1.2;
  white-space:nowrap;
}
.title-item .title-date{ display:flex; align-items:center; gap:8px; }

.home-browse .card-head{ flex-wrap:wrap; }
.archive-modes{ display:flex; gap:6px; }
.archive-modes [aria-pressed="true"]{
  color:var(--accent);
  border-color:var(--accent);
  background:color-mix(in srgb, var(--accent) 10%, transparent);
}
.archive-empty{ padding:8px; font-size:13px; }
.archive-carousel{ min-width:0; }
.archive-track{
  display:grid;
  grid-auto-flow:column;
  grid-auto-columns:calc((100% - 32px) / 3);
  gap:16px;
  overflow-x:auto;
  overscroll-behavior-x:contain;
  scroll-snap-type:x mandatory;
  padding:6px 0 14px;
  scrollbar-width:thin;
  scrollbar-color:var(--border) transparent;
}
.archive-card{
  min-width:0;
  background:var(--bg);
  border-radius:var(--radius);
  text-decoration:none;
  scroll-snap-align:start;
}
.archive-card .thumb{ height:auto; aspect-ratio:16 / 9; flex:none; }
.archive-card .post-body{ padding:18px; gap:12px; }
.archive-card h3{ font-weight:500; line-height:1.4; }
.archive-card .summary{ min-height:0; }
.archive-navigation{ display:flex; align-items:center; justify-content:center; gap:18px; margin-top:14px; }
.archive-navigation [role="status"]{ font:11px var(--mono); }
.archive-navigation button:disabled{ opacity:.4; cursor:default; }
@media (max-width: 1000px){
  .archive-track{ grid-auto-columns:calc((100% - 16px) / 2); }
}
@media (max-width: 600px){
  .archive-track{ grid-auto-columns:100%; }
}

.view{ min-height: 65vh; }

.footer{
  width:min(1320px, calc(100% - 48px));
  margin:0 auto;
  padding:22px 0;
  display:flex;
  justify-content:space-between;
  gap:20px;
  border-top:1px solid var(--border);
  font-size:11px;
}
.footer-stats{ display:flex; align-items:center; gap:20px; flex-wrap:wrap; color:var(--muted); font:10px var(--mono); }
.back-to-top{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:60;
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--card);
  color:var(--accent);
  box-shadow:var(--shadow);
  font-size:24px;
  cursor:pointer;
}
.back-to-top:hover{ border-color:var(--accent); }
.back-to-top[hidden]{ display:none; }
@media (max-width:600px){
  .back-to-top{ right:16px; bottom:16px; }
}
.footer-replay{ display:inline-flex; align-items:center; gap:6px; padding:5px 8px; border:1px solid var(--border); border-radius:var(--radius); background:transparent; color:var(--muted); font:inherit; cursor:pointer; }
.footer-replay:hover{ color:var(--accent); border-color:var(--accent); }
.footer-replay > [aria-hidden]{ font-size:16px; line-height:1; }
.footer-stats strong{ color:var(--text); font-weight:500; }
.app-error{ padding:20px; margin-bottom:18px; border-color:var(--accent); }
.tool-host{ min-height:180px; }
.muted{ color:var(--muted); }

@media (max-width: 1050px){
  .topbar{ flex-wrap:wrap; gap:12px; }
  .nav{ order:3; width:100%; justify-content:center; }
  .home-foundations{ align-items:stretch; flex-direction:column; gap:16px; }
  .hero-index{ display:none; }
}
@media (max-width: 700px){
  .topbar{ width:calc(100% - 32px); margin-top:16px; padding:14px 16px; top:8px; }
  .brand-name{ font-size:18px; }
  .nav{ flex-wrap:nowrap; justify-content:flex-start; overflow-x:auto; gap:2px; }
  .nav-link{ flex:none; font-size:11px; padding:8px; }
  .shell{ padding:16px; }
  .home-layout{ grid-template-columns:minmax(0, 1fr); }
  .hero{ padding:26px 22px; }
  .hero-title{ font-size:clamp(34px, 8vw, 52px); }
  .hero-lead{ font-size:13px; }
  .mini{ grid-template-columns:repeat(2, minmax(0, 1fr)); }
  .footer{ width:calc(100% - 32px); flex-direction:column; }
  .footer-stats{ gap:12px; }
}

/* Overlay */
.overlay{ position:fixed; inset:0; z-index:100; display:grid; place-items:center; }
.overlay-bg{ position:absolute; inset:0; background:rgba(0,0,0,.55); }
.overlay-card{
  position:relative;
  width:min(860px, calc(100% - 26px));
  background:var(--card);
  border:1px solid var(--border);
  border-radius:18px;
  box-shadow:var(--shadow);
  padding:14px;
}
.overlay-head{ display:flex; align-items:center; justify-content:space-between; gap:10px; }
.overlay-title{ font-weight:950; font-size:18px; }
.overlay-body{ color:var(--muted); line-height:1.7; margin-top:8px; }
.overlay-body p{ margin:0 0 10px 0; }
.overlay-peeks{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:10px;
  margin-top:14px;
}
.peek{
  text-align:left;
  border:1px solid var(--border);
  background:transparent;
  color:var(--text);
  border-radius:14px;
  padding:10px;
  cursor:pointer;
}
.peek:hover{ border-color:color-mix(in srgb, var(--accent) 35%, var(--border)); }
.peek-k{ color:var(--muted); font-size:12px; font-weight:900; }
.peek-t{ font-weight:950; }

/* Projects / Tools layouts */
.projects-intro{ padding:8px 0 4px; }
.projects-intro h2{ margin:0 0 10px; font-size:22px; font-weight:500; }
.projects-intro p{ margin:0; max-width:78ch; color:var(--muted); line-height:1.6; font-size:14px; }
.projWrap{
  display:grid;
  grid-template-columns:230px minmax(0, 1fr);
  gap:24px;
  margin-top:24px;
}
@media (max-width: 980px){
  .projWrap{
    grid-template-columns:1fr;
  }

  .tools-wrap{
    grid-template-columns:1fr;
  }
}
.tools-wrap{
  display:grid;
  grid-template-columns:320px 1fr;
  gap:14px;
  margin-top:12px;
}
.projSidebar, .tools-sidebar{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.projSidebar{ position:sticky; top:148px; align-self:start; max-height:calc(100svh - 172px); overflow-y:auto; }
.projNav{ display:grid; gap:8px; }
.projMain{ min-width:0; }
.projNavBtn, .tool-item{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  width:100%;
  text-align:left;
  padding:12px;
  border-radius:14px;
  border:1px solid var(--border);
  background:transparent;
  color:var(--text);
  cursor:pointer;
  font-weight:900;
}
.projNavBtn:hover, .tool-item:hover{ border-color:color-mix(in srgb, var(--accent) 35%, var(--border)); }
.projNavBtn.active, .tool-item.active{
  border-color:color-mix(in srgb, var(--accent) 45%, var(--border));
  background:color-mix(in srgb, var(--accent) 10%, transparent);
}
.projNavBtn{ text-decoration:none; border-radius:var(--radius); font-size:13px; font-weight:500; line-height:1.5; }
.projToc{ margin-top:16px; border-top:1px solid var(--border); padding-top:20px; }
.projToc[hidden]{ display:none; }
.projToc summary{ font-size:12px; color:var(--muted); cursor:pointer; padding:6px 0; }
.projToc nav{ display:grid; gap:2px; margin-top:12px; }
.toc-link{ width:100%; border:0; background:none; color:var(--text); text-align:left; padding:8px 10px; font-size:12px; line-height:1.5; cursor:pointer; }
.toc-link:hover{ color:var(--accent); background:color-mix(in srgb, var(--accent) 6%, transparent); }
.toc-subsection{ padding-left:22px; color:var(--muted); font-size:11px; }

.projCard{
  padding:32px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--card);
}
.projTitle{ margin:0; font-size:clamp(26px, 3vw, 38px); font-weight:500; line-height:1.15; letter-spacing:-.035em; }
.projMeta{ margin-top:12px; color:var(--accent); font-size:12px; font-weight:500; line-height:1.6; }
.projDesc{ margin:12px 0 0; max-width:76ch; color:var(--muted); line-height:1.7; font-size:14px; }
.project-actions{ display:flex; flex-wrap:wrap; gap:10px; border-top:1px solid var(--border); margin-top:36px; padding-top:24px; }
@media (max-width: 980px){
  .projSidebar{ position:static; max-height:none; overflow:visible; }
  .projNav{ grid-template-columns:repeat(3, minmax(0, 1fr)); }
  .projToc{ margin-top:4px; padding-top:12px; }
}
@media (max-width: 600px){
  .projNav{ grid-template-columns:1fr; }
  .projCard{ padding:22px 18px; }
}

.bar{ height:10px; border:1px solid var(--border); border-radius:999px; overflow:hidden; background:transparent; }
.bar > div{ height:100%; background:color-mix(in srgb, var(--accent) 35%, var(--card)); }

.about-card{ padding:22px 32px; }
.about-details{ display:grid; grid-template-columns:minmax(0, 72ch) 240px; gap:32px; align-items:start; margin-top:24px; font-size:14px; }
.about-copy,.about-content{ max-width:72ch; min-width:0; color:var(--muted); line-height:1.8; font-size:14px; }
.about-copy h1{ margin:0 0 14px; color:var(--text); font-size:clamp(28px, 4vw, 38px); font-weight:500; letter-spacing:-.035em; }
.about-copy > p:first-of-type{ margin-top:0; color:var(--text); font-size:17px; line-height:1.8; }
.about-copy h2,.about-content h2{ margin:32px 0 16px; color:var(--text); font-size:16px; font-weight:500; }
.about-content > h2:first-child{ margin-top:0; line-height:1.5; }
.about-copy ul,.about-content ul{ display:grid; grid-template-columns:repeat(2, minmax(0, 1fr)); gap:12px 28px; padding-left:18px; }
.about-copy li::marker,.about-content li::marker{ color:var(--accent); }
.about-interests{ min-width:0; padding:0 0 0 24px; border-left:1px solid var(--border); }
.about-interests h2{ margin:0 0 18px; color:var(--text); font-size:16px; font-weight:500; line-height:1.5; }
.about-interests ul{ display:grid; gap:14px; margin:0; padding-left:18px; color:var(--muted); font-size:13px; line-height:1.6; }
.about-interests li::marker{ color:var(--accent); }
.about-actions{ display:flex; margin-top:24px; }
.about-actions .btn{ text-decoration:none; font-size:12px; }
@media (max-width:900px){
  .about-details{ grid-template-columns:1fr; max-width:72ch; gap:24px; }
  .about-interests{ padding:20px 0 0; border-left:0; border-top:1px solid var(--border); }
}
@media (max-width:600px){
  .about-card{ padding:18px; }
  .about-copy ul,.about-content ul{ grid-template-columns:1fr; }
}

.tools-main{ padding:0; min-width:0; }
.tool-host{ padding:26px; }
.tool-item{ border-radius:var(--radius); font-size:13px; font-weight:500; }
.tool-title{ font-size:24px; font-weight:500; margin:0; letter-spacing:-.025em; }
.tool-sub{ color:var(--muted); margin-top:8px; line-height:1.7; font-size:13px; }
.tool-grid{
  display:grid;
  grid-template-columns:repeat(2, minmax(0, 1fr));
  gap:18px;
  margin-top:24px;
}
@media (max-width: 720px){
  .tool-grid{ grid-template-columns:1fr; }
}
.tool-field{ min-width:0; }
.tool-field label{ display:block; color:var(--muted); font-size:12px; font-weight:500; margin-bottom:8px; }
.tool-field input, .tool-field textarea{
  width:100%;
  border:1px solid var(--border);
  background:var(--bg);
  color:var(--text);
  border-radius:var(--radius);
  padding:10px 12px;
  font-family:var(--mono);
}
.tool-field textarea{ min-height:86px; resize:vertical; }
.tool-actions{ margin-top:20px; display:flex; gap:10px; flex-wrap:wrap; }
.tool-help{ margin-top:20px; color:var(--muted); line-height:1.7; font-size:12px; }
.tool-result{ margin-top:12px; padding:16px 20px; min-width:0; overflow-x:auto; border:1px solid var(--border); border-left:3px solid var(--accent); border-radius:var(--radius); background:color-mix(in srgb, var(--accent) 5%, var(--card)); }
.tool-result:empty{ display:none; }
.tool-result[role="alert"]{ font-size:13px; line-height:1.6; }
.tool-host .math-block{ max-width:100%; overflow-x:auto; }
.tool-host mjx-container[display="true"]{ margin:.7em 0 !important; }
.tool-raw{ margin-top:12px; }
.tool-raw summary{ color:var(--muted); cursor:pointer; font-size:11px; padding:4px 0; }
.tool-raw textarea,.tool-raw input{ margin-top:8px; }
.tool-steps{ margin:12px 0 0; padding-left:24px; }
.tool-steps li{ padding:4px 0; }
.plotbox{ margin-top:20px; border:1px solid var(--border); border-radius:var(--radius); overflow:hidden; }
.plot{ height:360px; }
@media (max-width:600px){
  .tool-host{ padding:20px 16px; }
  .tool-result{ padding:12px; }
}

/* tags shown under description in post cards */
.tagrow.under-desc{
  margin-top: 6px;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-start;
}

/* CAS operation buttons (replaces ugly native <select>) */
.cas-opbar{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:6px;
}

.cas-opbtn{
  appearance:none;
  border:1px solid var(--stroke);
  background:rgba(255,255,255,.04);
  color:var(--text);
  padding:8px 10px;
  border-radius:10px;
  font-size:12px;
  font-weight:900;
  letter-spacing:.2px;
  cursor:pointer;
  line-height:1;
  transition:transform .05s ease, background .12s ease, border-color .12s ease;
}

.cas-opbtn:hover{
  background:rgba(255,255,255,.07);
}

.cas-opbtn:active{
  transform:translateY(1px);
}

.cas-opbtn.active{
  background:rgba(255,255,255,.12);
  border-color:rgba(255,255,255,.22);
}

.cas-opbtn:focus{
  outline:none;
  box-shadow:0 0 0 3px rgba(120,160,255,.18);
}

.cas-ophelp{
  margin-top:8px;
  color:var(--muted);
  font-size:12px;
  line-height:1.5;

}
.projStatus{
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  margin:22px 0 0;
  padding:18px 0;
  border-block:1px solid var(--border);
}
.projStatus > div{ display:flex; align-items:baseline; gap:8px; }
.projStatus dt{ color:var(--muted); font-size:11px; }
.projStatus dd{ margin:0; font:12px var(--mono); }
.project-phase{ color:var(--accent); }
.projDoc{ margin-top:32px; font-size:15px; line-height:1.8; overflow-wrap:break-word; }
.article-content{ overflow-wrap:break-word; }
.article-hero{
  float:right;
  width:28%;
  max-width:320px;
  min-width:120px;
  height:auto;
  margin:0 0 16px 24px;
  border:1px solid var(--border);
  border-radius:var(--radius);
}
.article-actions{ clear:both; }
.article-content::after{ content:""; display:block; clear:both; }
.projDoc :is(h1,h2,h3){ font-weight:500; line-height:1.3; }
.projDoc h1{ margin:32px 0 20px; font-size:28px; }
.projDoc h2{ margin:44px 0 18px; font-size:24px; letter-spacing:-.025em; }
.projDoc h3{ margin:28px 0 14px; font-size:18px; }
.projDoc > :first-child{ margin-top:0; }
.projDoc :is(p,ul,ol){ max-width:76ch; }
.projDoc p{ margin:0 0 18px; }
.projDoc :is(ul,ol){ padding-left:24px; }
.projDoc li{ margin:6px 0; }
.projDoc strong{ font-weight:600; }
.projDoc img{ display:block; max-width:100%; height:auto; margin:24px auto 12px; border-radius:var(--radius); border:1px solid var(--border); }
.projDoc p:has(img){ max-width:none; }
.projDoc p:has(> em:only-child){ max-width:none; color:var(--muted); font-size:12px; line-height:1.6; }
.projDoc table{ display:block; max-width:100%; overflow-x:auto; border-collapse:collapse; margin:22px 0; font-size:13px; }
.projDoc :is(th,td){ padding:10px 14px; border-bottom:1px solid var(--border); text-align:left; vertical-align:top; }
.projDoc th{ font-weight:600; color:var(--accent); }
.projDoc blockquote{ margin:24px 0; padding:12px 18px; border-left:2px solid var(--accent); background:color-mix(in srgb, var(--accent) 5%, transparent); }
.projDoc blockquote p:last-child{ margin-bottom:0; }
.math-block{ max-width:100%; overflow-x:auto; overflow-y:hidden; padding:14px 18px; margin:24px 0; border-left:2px solid var(--border); background:color-mix(in srgb, var(--accent) 4%, transparent); }
.math-block mjx-container[display="true"]{ margin:.5em 0 !important; }
.doc-notice{ color:var(--muted); border-left:2px solid var(--accent); padding:10px 14px; font-size:12px; line-height:1.6; }
@media (max-width: 600px){
  .article-hero{ width:35%; max-width:180px; min-width:100px; margin-left:14px; }
}