/* =========================================================================
   Pihasa Assistant - Knowledge Base
   Type: Plus Jakarta Sans (headings) / Inter (body)
   ========================================================================= */

:root{
  --ink:#101519;
  --ink-2:#39424c;
  --muted:#646e7a;
  --line:#e3e7ea;
  --line-soft:#eef1f3;
  --bg:#ffffff;
  --bg-soft:#f6f8f9;
  --bg-deep:#0e1317;
  --accent:#cf2e2e;
  --accent-ink:#a92424;
  --accent-soft:#fceaea;
  --warn:#a5560d;
  --warn-soft:#fdf4e8;
  --note:#5b7183;
  --note-soft:#eef2f5;

  --cat-first-steps:#cf2e2e;
  --cat-getting-started:#a8560f;
  --cat-software:#2f4d87;
  --cat-outputs:#61407c;

  --font-head:"Plus Jakarta Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-body:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;

  --shell:1220px;
  --radius:10px;
  --shadow-sm:0 1px 2px rgba(16,21,25,.05),0 1px 3px rgba(16,21,25,.04);
  --shadow-md:0 4px 12px rgba(16,21,25,.07),0 12px 32px rgba(16,21,25,.06);
  --shadow-lg:0 24px 64px rgba(16,21,25,.18);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font-body);font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,.brand-name{font-family:var(--font-head);font-weight:700;letter-spacing:-.019em;color:var(--ink)}
h1{font-size:clamp(1.9rem,1.3rem + 2.4vw,2.9rem);line-height:1.12;font-weight:800;
  margin:0 0 .5rem;overflow-wrap:break-word}
h2{font-size:1.32rem;line-height:1.25;margin:0}
h3{font-size:1.06rem;line-height:1.3;margin:0}
p{margin:0 0 1rem}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
img{max-width:100%;height:auto}
ul,ol{margin:0 0 1rem;padding-left:1.15rem}
code{font-family:var(--font-mono);font-size:.88em;background:var(--bg-soft);
  border:1px solid var(--line-soft);border-radius:4px;padding:.1em .35em}
kbd{font-family:var(--font-body);font-size:.7rem;font-weight:600;color:var(--muted);
  background:var(--bg);border:1px solid var(--line);border-bottom-width:2px;
  border-radius:5px;padding:.1rem .32rem;line-height:1}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:3px}

.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 24px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;
  padding:.6rem 1rem;z-index:200;border-radius:0 0 6px 0}
.skip-link:focus{left:0}

/* ---------------------------------------------------------------- header */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.88);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:20px;height:66px}
.brand{display:flex;align-items:center;gap:10px;color:var(--accent);text-decoration:none;flex-shrink:0}
.brand:hover{text-decoration:none}
.logo-mark{width:30px;height:30px;flex-shrink:0}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-size:.98rem;font-weight:800;color:var(--ink);letter-spacing:-.02em}
.brand-sub{font-size:.63rem;font-weight:600;letter-spacing:.11em;text-transform:uppercase;color:var(--muted)}
.site-nav{display:flex;gap:2px;margin-left:auto}
.site-nav a{padding:.45rem .7rem;border-radius:7px;font-size:.885rem;font-weight:500;color:var(--ink-2)}
.site-nav a:hover{background:var(--bg-soft);color:var(--ink);text-decoration:none}
.site-nav a.is-current{color:var(--ink);font-weight:600}
.search-trigger{display:flex;align-items:center;gap:8px;background:var(--bg-soft);
  border:1px solid var(--line);border-radius:8px;padding:.42rem .55rem .42rem .6rem;
  font:inherit;font-size:.83rem;color:var(--muted);cursor:pointer;transition:border-color .15s}
.search-trigger:hover{border-color:#c9d1d6;color:var(--ink-2)}
.search-trigger svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;
  stroke-linecap:round}
.search-trigger span{padding-right:14px}
.nav-toggle{display:none;flex-direction:column;gap:4px;background:none;border:0;
  padding:8px;cursor:pointer}
.nav-toggle span{width:19px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}

/* ------------------------------------------------------------------ hero */
.hero{background:var(--bg-soft);border-bottom:1px solid var(--line);
  background-image:linear-gradient(var(--line-soft) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);
  background-size:56px 56px;background-position:center}
.hero-inner{padding:76px 24px 68px}
.eyebrow{font-size:.72rem;font-weight:700;letter-spacing:.13em;text-transform:uppercase;
  color:var(--accent);margin:0 0 .85rem}
.hero h1{max-width:19ch}
.lead{font-size:1.06rem;color:var(--ink-2);max-width:62ch;margin:.85rem 0 0}
.hero-search{display:flex;align-items:center;gap:12px;background:var(--bg);
  border:1px solid var(--line);border-radius:12px;padding:.85rem 1rem;margin-top:2rem;
  max-width:620px;box-shadow:var(--shadow-sm);cursor:text;transition:box-shadow .18s,border-color .18s}
.hero-search:hover{border-color:#c9d1d6;box-shadow:var(--shadow-md)}
.hero-search svg{width:19px;height:19px;fill:none;stroke:var(--muted);stroke-width:2;
  stroke-linecap:round;flex-shrink:0}
.hero-search input{flex:1;border:0;background:none;font:inherit;font-size:1rem;color:var(--ink);
  outline:none;min-width:0}
.hero-hints{margin-top:1.4rem;font-size:.86rem;color:var(--muted);display:flex;
  flex-wrap:wrap;gap:.55rem;align-items:center}
.hero-hints a{background:var(--bg);border:1px solid var(--line);border-radius:99px;
  padding:.24rem .7rem;color:var(--ink-2);font-weight:500;font-size:.82rem}
.hero-hints a:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}

/* --------------------------------------------------------------- sections */
.section{padding:64px 24px}
.section--tight{padding-top:0}
.section-head{margin-bottom:28px}
.section-head h2{font-size:1.45rem;font-weight:800}
.section-head p{color:var(--muted);margin:.35rem 0 0;font-size:.95rem}

.cat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.cat-card{border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px 22px;
  background:var(--bg);position:relative;overflow:hidden;transition:border-color .18s,box-shadow .18s}
.cat-card::before{content:"";position:absolute;inset:0 auto 0 0;width:3px;
  background:var(--c,var(--accent))}
.cat-card:hover{border-color:#cfd7dc;box-shadow:var(--shadow-md)}
.cat-card[data-cat=first-steps]{--c:var(--cat-first-steps)}
.cat-card[data-cat=getting-started]{--c:var(--cat-getting-started)}
.cat-card[data-cat=software]{--c:var(--cat-software)}
.cat-card[data-cat=outputs]{--c:var(--cat-outputs)}
.cat-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.cat-badge{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;
  border-radius:7px;background:var(--c,var(--accent));color:#fff;font-family:var(--font-head);
  font-weight:800;font-size:.82rem}
.cat-badge--lg{width:34px;height:34px;font-size:1rem;margin-bottom:14px}
.cat-badge[data-cat=first-steps]{--c:var(--cat-first-steps)}
.cat-badge[data-cat=getting-started]{--c:var(--cat-getting-started)}
.cat-badge[data-cat=software]{--c:var(--cat-software)}
.cat-badge[data-cat=outputs]{--c:var(--cat-outputs)}
.cat-icon{width:22px;height:22px;color:var(--c,var(--accent));opacity:.4}
.cat-title{font-size:1.16rem;font-weight:700;margin:0 0 .35rem}
.cat-title a{color:var(--ink)}
.cat-desc{color:var(--muted);font-size:.9rem;margin:0 0 1.1rem}
.cat-list{list-style:none;padding:0;margin:0 0 1.1rem;border-top:1px solid var(--line-soft)}
.cat-list li{border-bottom:1px solid var(--line-soft)}
.cat-list a{display:block;padding:.5rem 0;font-size:.9rem;color:var(--ink-2);font-weight:500}
.cat-list a:hover{color:var(--c,var(--accent));text-decoration:none}
.cat-more{font-size:.83rem;font-weight:600;color:var(--c,var(--accent))}
.cat-more span{transition:transform .15s;display:inline-block}
.cat-more:hover span{transform:translateX(3px)}

.recent-list{list-style:none;padding:0;margin:0;border-top:1px solid var(--line)}
.recent-row{border-bottom:1px solid var(--line)}
.recent-row a{display:grid;grid-template-columns:190px 1fr auto;gap:18px;align-items:center;
  padding:.85rem 4px;color:var(--ink)}
.recent-row a:hover{text-decoration:none;background:var(--bg-soft)}
.recent-cat{font-size:.72rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;
  color:var(--c,var(--muted))}
.recent-cat[data-cat=first-steps]{--c:var(--cat-first-steps)}
.recent-cat[data-cat=getting-started]{--c:var(--cat-getting-started)}
.recent-cat[data-cat=software]{--c:var(--cat-software)}
.recent-cat[data-cat=outputs]{--c:var(--cat-outputs)}
.recent-title{font-weight:500;font-size:.95rem}
.recent-date{font-size:.8rem;color:var(--muted);font-variant-numeric:tabular-nums}

.cta{display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
  background:var(--bg-deep);color:#fff;border-radius:var(--radius);padding:36px 34px}
.cta h2{color:#fff;font-size:1.3rem;margin:0 0 .3rem}
.cta p{color:#a9b4be;margin:0;font-size:.94rem}
.cta-actions{display:flex;gap:10px;flex-wrap:wrap}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;
  font-family:var(--font-body);font-size:.88rem;font-weight:600;padding:.62rem 1.15rem;
  border-radius:8px;border:1px solid transparent;cursor:pointer;transition:.15s;text-decoration:none}
.btn:hover{text-decoration:none}
.btn--primary{background:var(--accent);color:#fff}
.btn--primary:hover{background:var(--accent-ink)}
.btn--ghost{background:transparent;color:inherit;border-color:currentColor;opacity:.85}
.btn--ghost:hover{opacity:1}

/* ------------------------------------------------------------- page heads */
.page-head{padding:52px 24px 34px;border-bottom:1px solid var(--line)}
.page-head--cat{border-bottom:0;padding-bottom:8px}
.crumbs{display:flex;flex-wrap:wrap;gap:.45rem;align-items:center;font-size:.8rem;
  color:var(--muted);margin-bottom:1.1rem}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--accent)}
.crumbs span[aria-hidden]{opacity:.45}
.page-meta{font-size:.85rem;color:var(--muted);margin:1rem 0 0}
.page-body{padding:40px 24px 72px}
.page-body .prose,.page-body .faq-list,.page-body .page-note{max-width:78ch}
.page-body--wide .prose{max-width:none}
.page-note{margin-top:2rem;font-size:.9rem;color:var(--muted)}

/* -------------------------------------------------------------- category */
.layout-cat{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:56px;
  padding:34px 24px 76px;align-items:start}
.art-rows{list-style:none;padding:0;margin:0;border-top:1px solid var(--line)}
.art-row{border-bottom:1px solid var(--line)}
.art-row a{display:block;padding:1.35rem 0;color:var(--ink)}
.art-row a:hover{text-decoration:none}
.art-row h2{font-size:1.08rem;font-weight:700;margin:0 0 .3rem;transition:color .15s}
.art-row a:hover h2{color:var(--accent)}
.art-row p{color:var(--ink-2);font-size:.92rem;margin:0 0 .55rem;max-width:66ch}
.art-meta{font-size:.78rem;color:var(--muted)}
.cat-aside{position:sticky;top:92px}
.aside-title{font-family:var(--font-head);font-size:.74rem;font-weight:700;letter-spacing:.1em;
  text-transform:uppercase;color:var(--muted);margin:0 0 .8rem}
.aside-list{list-style:none;padding:0;margin:0}
.aside-list li{margin-bottom:.42rem}
.aside-list a{font-size:.88rem;color:var(--ink-2)}
.aside-list a:hover{color:var(--accent)}
.aside-list li.is-current a{color:var(--accent);font-weight:600}
.aside-box{margin-top:28px;padding:18px;background:var(--bg-soft);border:1px solid var(--line);
  border-radius:var(--radius)}
.aside-box p{font-size:.87rem;color:var(--ink-2);margin:0 0 .5rem}
.aside-box p:last-child{margin-bottom:0}

/* --------------------------------------------------------------- article */
.layout-article{display:grid;grid-template-columns:242px minmax(0,1fr) 224px;gap:48px;
  padding:36px 24px 88px;align-items:start}
.side-nav{position:sticky;top:92px;max-height:calc(100vh - 120px);overflow-y:auto;
  padding-right:8px;border-right:1px solid var(--line-soft)}
.side-tree{list-style:none;padding:0;margin:0}
.side-group{margin-bottom:1.1rem}
.side-cat{display:flex;align-items:center;gap:8px;font-family:var(--font-head);font-size:.85rem;
  font-weight:700;color:var(--ink);padding:.2rem 0;letter-spacing:-.01em}
.side-cat:hover{color:var(--accent);text-decoration:none}
.side-num{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;
  border-radius:5px;background:var(--bg-soft);border:1px solid var(--line);font-size:.68rem;
  color:var(--muted);flex-shrink:0}
.side-group ul{list-style:none;padding:0;margin:.4rem 0 0 6px;border-left:2px solid var(--line-soft)}
.side-group li{margin:0}
.side-group li a{display:block;padding:.28rem 0 .28rem .75rem;font-size:.845rem;color:var(--muted);
  line-height:1.4;margin-left:-2px;border-left:2px solid transparent}
.side-group li a:hover{color:var(--ink);text-decoration:none}
.side-group li.is-current a{color:var(--accent);font-weight:600;border-left-color:var(--accent)}

.article{min-width:0}
.article-head{padding-bottom:1.6rem;border-bottom:1px solid var(--line);margin-bottom:2rem}
.cat-chip{display:inline-block;font-size:.71rem;font-weight:700;letter-spacing:.06em;
  text-transform:uppercase;color:var(--c,var(--accent));background:var(--bg-soft);
  border:1px solid var(--line);border-radius:99px;padding:.22rem .65rem;margin-bottom:1rem}
.cat-chip[data-cat=first-steps]{--c:var(--cat-first-steps)}
.cat-chip[data-cat=getting-started]{--c:var(--cat-getting-started)}
.cat-chip[data-cat=software]{--c:var(--cat-software)}
.cat-chip[data-cat=outputs]{--c:var(--cat-outputs)}
.article-head h1{font-size:clamp(1.75rem,1.2rem + 1.8vw,2.35rem)}
.article-meta{font-size:.83rem;color:var(--muted);margin:.75rem 0 0}
.tags{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:.9rem}
.tag{font-size:.73rem;font-weight:500;color:var(--muted);background:var(--bg-soft);
  border:1px solid var(--line);border-radius:5px;padding:.15rem .5rem}

/* ----------------------------------------------------------------- prose */
.prose{max-width:70ch;color:var(--ink-2);font-size:1rem;line-height:1.72}
.prose > :first-child{margin-top:0}
.prose h2{font-size:1.28rem;font-weight:700;color:var(--ink);margin:2.6rem 0 .85rem;
  scroll-margin-top:92px}
.prose h3{font-size:1.04rem;font-weight:700;color:var(--ink);margin:1.9rem 0 .6rem;
  scroll-margin-top:92px}
.prose p{margin:0 0 1.05rem}
.prose ul,.prose ol{margin:0 0 1.15rem;padding-left:1.25rem}
.prose li{margin-bottom:.42rem}
.prose li > ul{margin-top:.42rem;margin-bottom:.2rem}
.prose strong{color:var(--ink);font-weight:600}
.prose a{font-weight:500;text-decoration:underline;text-decoration-color:rgba(207,46,46,.32);
  text-underline-offset:2px}
.prose a:hover{text-decoration-color:var(--accent)}
.prose a[target=_blank]::after{content:"↗";font-size:.75em;margin-left:.15em;opacity:.6;
  text-decoration:none;display:inline-block}
.prose img.icon{display:inline-block;width:15px;height:15px;vertical-align:-2px;margin:0 1px}
.prose img.icon--wide{width:auto;height:17px;vertical-align:-4px;border-radius:3px}
.prose figure{margin:1.7rem 0;padding:14px;background:var(--bg-soft);border:1px solid var(--line);
  border-radius:var(--radius)}
.prose figure img{display:block;width:100%;border-radius:6px;background:#fff}
.prose figcaption{font-size:.79rem;color:var(--muted);margin-top:.65rem;text-align:center}
.callout{margin:1.5rem 0;padding:.95rem 1.1rem;background:var(--note-soft);
  border-left:3px solid var(--note);border-radius:0 6px 6px 0;font-size:.92rem}
.callout p{margin:0}
.callout p + p{margin-top:.6rem}
.callout--warning{background:var(--warn-soft);border-left-color:var(--warn)}
.table-scroll{overflow-x:auto;margin:1.4rem 0;-webkit-overflow-scrolling:touch}
.table-scroll:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.data-table{width:100%;min-width:30rem;border-collapse:collapse;margin:0;font-size:.87rem}
.data-table th,.data-table td{border:1px solid var(--line);padding:.6rem .7rem;
  text-align:left;vertical-align:top}
.data-table thead th{background:var(--bg-soft);font-family:var(--font-head);font-weight:700;
  font-size:.78rem;letter-spacing:.02em;color:var(--ink)}
.data-table tbody th{background:var(--bg-soft);font-weight:600;color:var(--ink);width:30%}
.legal-updated{font-size:.83rem;color:var(--muted);border-bottom:1px solid var(--line);
  padding-bottom:1rem}
.muted-note{color:var(--muted);font-size:.92em}
.placeholder{background:var(--warn-soft);border:1px dashed #d9b98c;border-radius:4px;
  padding:.05rem .4rem;font-size:.85em;color:var(--warn);font-style:italic}

.pager{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:3rem 0 0}
.pager-item{border:1px solid var(--line);border-radius:var(--radius);padding:.85rem 1rem;
  display:flex;flex-direction:column;gap:.15rem;transition:border-color .15s}
.pager-item:hover{border-color:var(--accent);text-decoration:none}
.pager-next{text-align:right}
.pager-label{font-size:.72rem;font-weight:600;letter-spacing:.07em;text-transform:uppercase;
  color:var(--muted)}
.pager-title{font-size:.9rem;font-weight:600;color:var(--ink)}

.related{margin-top:3rem;padding-top:2rem;border-top:1px solid var(--line)}
.related h2{font-size:1.1rem;margin-bottom:.9rem}
.related-list{list-style:none;padding:0;margin:0;display:grid;
  grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:10px}
.related-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;
  border:1px solid var(--line);border-radius:8px;padding:.7rem .85rem;font-size:.9rem;
  font-weight:500;color:var(--ink);transition:.15s}
.related-list a:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}
.related-arrow{opacity:.4}
.ask{margin-top:2.5rem;padding:1.2rem 1.3rem;background:var(--bg-soft);border:1px solid var(--line);
  border-radius:var(--radius)}
.ask h2{font-size:1rem;margin-bottom:.3rem}
.ask p a,.faq-answer a,.aside-box p a,.page-note a{text-decoration:underline;
  text-underline-offset:2px}
.ask p{font-size:.9rem;color:var(--ink-2);margin:0}

.article-aside{position:sticky;top:92px}
.toc ul{list-style:none;padding:0;margin:0;border-left:2px solid var(--line)}
.toc li a{display:block;padding:.3rem 0 .3rem .8rem;font-size:.83rem;color:var(--muted);
  line-height:1.4;margin-left:-2px;border-left:2px solid transparent}
.toc li a:hover{color:var(--ink);text-decoration:none}
.toc li a.is-active{color:var(--accent);font-weight:600;border-left-color:var(--accent)}

/* -------------------------------------------------------------------- faq */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:1.15rem 0;cursor:pointer;list-style:none;font-family:var(--font-head);font-weight:700;
  font-size:1.02rem;color:var(--ink)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent)}
.faq-mark{position:relative;width:14px;height:14px;flex-shrink:0}
.faq-mark::before,.faq-mark::after{content:"";position:absolute;background:var(--muted);
  border-radius:2px;transition:transform .2s}
.faq-mark::before{top:6px;left:0;width:14px;height:2px}
.faq-mark::after{top:0;left:6px;width:2px;height:14px}
.faq-item[open] .faq-mark::after{transform:rotate(90deg);opacity:0}
.faq-answer{padding:0 0 1.35rem;max-width:70ch;color:var(--ink-2);font-size:.95rem}
.faq-answer p{margin:0 0 .8rem}
.faq-answer p:last-child{margin-bottom:0}

/* -------------------------------------------------------------------- 404 */
.notfound{padding:110px 24px 130px;max-width:640px}
.notfound-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:2rem}

/* ----------------------------------------------------------------- search */
.search-overlay{position:fixed;inset:0;z-index:140;display:flex;justify-content:center;
  align-items:flex-start;padding:9vh 20px 20px}
.search-overlay[hidden]{display:none}
.search-backdrop{position:absolute;inset:0;background:rgba(14,19,23,.5);
  backdrop-filter:blur(3px);animation:fade .16s ease}
.search-panel{position:relative;width:100%;max-width:660px;background:var(--bg);
  border-radius:14px;box-shadow:var(--shadow-lg);overflow:hidden;
  display:flex;flex-direction:column;max-height:78vh;animation:pop .18s ease}
@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes pop{from{opacity:0;transform:translateY(-8px) scale(.99)}to{opacity:1;transform:none}}
.search-field{display:flex;align-items:center;gap:12px;padding:16px 18px;
  border-bottom:1px solid var(--line)}
.search-field svg{width:19px;height:19px;fill:none;stroke:var(--muted);stroke-width:2;
  stroke-linecap:round;flex-shrink:0}
.search-field input{flex:1;border:0;background:none;font:inherit;font-size:1.02rem;
  color:var(--ink);outline:none;min-width:0}
.search-close{background:var(--bg-soft);border:1px solid var(--line);border-radius:6px;
  font:inherit;font-size:.72rem;font-weight:600;color:var(--muted);padding:.2rem .45rem;
  cursor:pointer}
.search-filters{display:flex;flex-wrap:wrap;gap:6px;padding:12px 18px;
  border-bottom:1px solid var(--line-soft)}
.chip{background:var(--bg-soft);border:1px solid var(--line);border-radius:99px;
  padding:.22rem .68rem;font:inherit;font-size:.78rem;font-weight:500;color:var(--muted);
  cursor:pointer;transition:.15s;white-space:nowrap}
.chip:hover{color:var(--ink);border-color:#c9d1d6}
.chip.is-active{background:var(--accent);border-color:var(--accent);color:#fff}
.search-results{overflow-y:auto;padding:8px;flex:1;min-height:120px}
.sr-item{display:block;padding:.7rem .8rem;border-radius:8px;color:var(--ink)}
.sr-item:hover,.sr-item.is-active{background:var(--bg-soft);text-decoration:none}
.sr-item.is-active{box-shadow:inset 0 0 0 1px var(--line)}
.sr-cat{font-size:.68rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  color:var(--muted)}
.sr-title{font-family:var(--font-head);font-weight:700;font-size:.95rem;margin:.15rem 0}
.sr-snippet{font-size:.83rem;color:var(--muted);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sr-item mark{background:#fdf0c9;color:inherit;border-radius:2px;padding:0 1px}
.sr-empty{padding:2.4rem 1rem;text-align:center;color:var(--muted);font-size:.9rem}
.sr-hint{padding:1rem;color:var(--muted);font-size:.85rem}
.search-foot{display:flex;gap:16px;padding:10px 18px;border-top:1px solid var(--line-soft);
  font-size:.74rem;color:var(--muted);background:var(--bg-soft)}
.search-foot kbd{margin-right:3px}

/* ----------------------------------------------------------------- footer */
.site-footer{background:var(--bg-deep);color:#98a4af;padding:56px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px}
.brand--footer .brand-name{color:#fff}
.brand--footer .brand-sub{color:#98a4af}
.brand--footer{color:#e05252}
.footer-blurb{font-size:.85rem;color:#98a4af;margin-top:1rem;max-width:34ch}
.footer-title{font-family:var(--font-head);font-size:.72rem;font-weight:700;letter-spacing:.11em;
  text-transform:uppercase;color:#fff;margin:0 0 1rem}
.footer-list{list-style:none;padding:0;margin:0}
.footer-list li{margin-bottom:.5rem}
.footer-list a,.footer-list .linklike{font-size:.86rem;color:#98a4af;text-decoration:none}
.footer-list a:hover,.footer-list .linklike:hover{color:#fff;text-decoration:none}
.footer-bottom{border-top:1px solid #232c33;padding-top:22px;display:flex;
  justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:.79rem;color:#8a95a0}
.footer-bottom p{margin:0}
.footer-bottom a{color:#98a4af;text-decoration:underline;text-underline-offset:2px}
.footer-bottom a:hover{color:#fff}

/* ------------------------------------------------------------ responsive */
@media (max-width:1080px){
  .layout-article{grid-template-columns:220px minmax(0,1fr);gap:36px}
  .article-aside{display:none}
}
@media (max-width:900px){
  .layout-article{grid-template-columns:minmax(0,1fr)}
  .article{order:1}
  .side-nav{order:2;position:static;max-height:none;border-right:0;
    border-top:1px solid var(--line);padding:32px 0 0;margin-top:16px}
  .side-tree{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}
  .layout-cat,.layout-contact{grid-template-columns:minmax(0,1fr);gap:40px}
  .cat-aside,.contact-aside{position:static}
  .cat-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:720px){
  .site-nav{position:absolute;top:66px;left:0;right:0;background:var(--bg);
    border-bottom:1px solid var(--line);flex-direction:column;gap:0;padding:8px 16px 14px;
    display:none;box-shadow:var(--shadow-md)}
  .site-nav.is-open{display:flex}
  .site-nav a{padding:.6rem .4rem;border-radius:0;border-bottom:1px solid var(--line-soft)}
  .nav-toggle{display:flex;margin-left:auto;order:3}
  .search-trigger{margin-left:auto;order:2}
  .search-trigger span,.search-trigger kbd{display:none}
  .search-trigger{padding:.45rem}
  .hero-inner{padding:52px 24px 46px}
  .section{padding:44px 24px}
  .recent-row a{grid-template-columns:1fr;gap:.25rem;padding:.9rem 4px}
  .recent-date{font-size:.75rem}
  .pager{grid-template-columns:1fr}
  .pager-next{text-align:left}
  .cta{padding:26px 22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .search-overlay{padding:0}
  .search-panel{max-width:100%;border-radius:0;max-height:100vh;height:100%}
}

/* ---------------------------------------------------------------- dark UI */
@media (prefers-color-scheme:dark){
  :root{
    --ink:#e9edf0;--ink-2:#b6c0c9;--muted:#8b96a1;
    --line:#262e35;--line-soft:#1e252b;
    --bg:#12171b;--bg-soft:#171d22;--bg-deep:#0b0f12;
    --accent:#ef6a6a;--accent-ink:#f58888;--accent-soft:#2c1719;
    --warn:#d8a05a;--warn-soft:#241d12;
    --note:#8ba2b4;--note-soft:#1a2127;
    --cat-first-steps:#ef6a6a;--cat-getting-started:#d68a45;
    --cat-software:#7b9be0;--cat-outputs:#b18cd4;
    --shadow-lg:0 24px 64px rgba(0,0,0,.55);
  }
  .site-header{background:rgba(18,23,27,.86)}
  .hero{background-image:linear-gradient(#1a2127 1px,transparent 1px),
    linear-gradient(90deg,#1a2127 1px,transparent 1px)}
  .prose figure img{background:#1c232a}
  .prose a{text-decoration-color:rgba(239,106,106,.35)}
  .btn--primary{color:#1a0d0e}
  .btn--primary:hover{color:#1a0d0e}
  .chip.is-active{color:#1a0d0e}
  .sr-item mark{background:#4a3f1c;color:#f2e4bd}
  .site-footer{color:#8b96a1}
  .brand--footer{color:#ef6a6a}
  .footer-bottom{border-top-color:#1d2429}
  .placeholder{border-color:#4a3d29}
}

/* ------------------------------------------------------------------ print */
@media print{
  .site-header,.site-footer,.side-nav,.article-aside,.search-overlay,
  .pager,.ask,.crumbs{display:none!important}
  .layout-article{grid-template-columns:1fr;padding:0}
  body{font-size:11pt}
  .prose{max-width:none}
  .prose a::after{content:" (" attr(href) ")";font-size:.8em;color:#666}
}