/* Category pillar page — shared styles for /front/category.html,
   /front/categories.html and /front/topics/*.html stubs.
   Mirrors no-data.html / launch.html shell aesthetic. */

*,*::before,*::after { box-sizing: border-box; }
html,body { margin:0; padding:0; }
body {
  font-family: var(--font-sans);
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; color: inherit; }

.cat-sr-only { position:absolute!important; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }
.cat-skip { position:absolute; left:12px; top:-40px; background: var(--fg); color: var(--bg); padding:8px 14px; border-radius:5px; font-size:13px; font-weight:600; z-index:100; transition: top .2s ease; }
.cat-skip:focus { top:12px; outline:2px solid var(--c-accent); outline-offset:2px; }

.btn:focus-visible, a:focus-visible { outline:2px solid var(--c-accent); outline-offset:3px; border-radius:5px; }

.page {
  position: relative; min-height: 100vh; display: flex; flex-direction: column;
  background:
    radial-gradient(900px 600px at 88% 12%, hsl(var(--accent) / 0.10), transparent 60%),
    radial-gradient(700px 500px at 8% 100%, hsl(var(--gold) / 0.10), transparent 60%),
    var(--gradient-warm);
  overflow-x: hidden;
}

/* ===== Nav (mirrors no-data/launch) ===== */
.nav {
  display:flex; align-items:center; gap:32px;
  padding:18px 40px;
  max-width:1360px; width:100%; margin:0 auto;
  background: hsl(var(--surface-soft) / 0.6);
  border-bottom:1px solid hsl(var(--border-soft));
}
.brand { display:flex; align-items:center; gap:10px; font-family: var(--font-serif); font-size:22px; letter-spacing:-0.01em; color: var(--fg); }
.brand-mark {
  width:28px; height:28px; border-radius:8px;
  background: var(--gradient-accent);
  display:grid; place-items:center; color:#fff; font-weight:700; font-size:13px;
  font-family: var(--font-sans);
  box-shadow: 0 4px 12px hsl(var(--accent) / 0.30);
}
.nav-cta { margin-left:auto; display:flex; align-items:center; gap:10px; }
.btn {
  display:inline-flex; align-items:center; gap:8px;
  padding:10px 16px; border-radius:5px;
  font-size:13.5px; font-weight:600; letter-spacing:-0.005em;
  transition: all .25s var(--ease-organic);
  border:1px solid transparent; white-space:nowrap;
}
.btn svg { width:14px; height:14px; }
.btn-ghost { color: var(--fg-soft); }
.btn-ghost:hover { color: var(--fg); background: var(--c-ink-05); }
.btn-outline { border-color: var(--c-border-strong); color: var(--fg); background: var(--c-surface); }
.btn-outline:hover { border-color: var(--fg); transform: translateY(-1px); }
.btn-primary {
  background: linear-gradient(180deg, #3a7a5c 0%, #2f6249 100%);
  color:#fff;
  box-shadow: 0 1px 0 hsl(0 0% 100% / 0.18) inset, 0 8px 22px hsl(153 30% 25% / 0.22);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 1px 0 hsl(0 0% 100% / 0.22) inset, 0 14px 30px hsl(153 30% 25% / 0.28); }

/* ===== Container ===== */
.cat-wrap { max-width:1280px; width:100%; margin:0 auto; padding:0 40px; }

/* ===== Breadcrumb ===== */
.cat-crumbs {
  padding: 20px 0 0;
  font-size:12px; color: var(--fg-muted);
  display:flex; align-items:center; gap:8px; flex-wrap:wrap;
}
.cat-crumbs a { color: var(--fg-soft); }
.cat-crumbs a:hover { color: var(--c-accent); }
.cat-crumbs .sep { opacity:.5; }
.cat-crumbs [aria-current="page"] { color: var(--fg); font-weight:600; }

/* ===== Hero (branded by category) ===== */
.cat-hero {
  margin-top: 18px;
  padding: 44px 44px 40px;
  border-radius: 5px;
  border: 1px solid var(--c-border);
  background:
    radial-gradient(900px 500px at 90% 0%, var(--cat-bg, hsl(var(--surface) / 0.7)), transparent 60%),
    hsl(var(--surface) / 0.85);
  position: relative; overflow: hidden;
}
.cat-hero::before {
  content:''; position:absolute; inset:0; pointer-events:none;
  background-image:
    linear-gradient(to right, hsl(var(--border-soft)) 1px, transparent 1px),
    linear-gradient(to bottom, hsl(var(--border-soft)) 1px, transparent 1px);
  background-size: 36px 36px;
  opacity:.22;
  mask-image: radial-gradient(ellipse at top right, #000 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at top right, #000 30%, transparent 70%);
}
.cat-hero-inner { position:relative; max-width: 760px; }
.cat-eyebrow {
  display:inline-flex; align-items:center; gap:8px;
  padding:6px 12px;
  border:1px solid var(--c-border);
  background: hsl(var(--surface) / 0.85);
  border-radius:999px;
  font-size:11.5px; font-weight:600;
  color: var(--fg-soft); letter-spacing:.05em; text-transform:uppercase;
}
.cat-eyebrow .dot { width:6px; height:6px; border-radius:50%; background: var(--cat-color, #3a7a5c); box-shadow: 0 0 0 4px color-mix(in srgb, var(--cat-color, #3a7a5c) 24%, transparent); }
.cat-hero h1 {
  margin:18px 0 14px;
  font-family: var(--font-serif);
  font-weight:400;
  font-size: clamp(34px, 4.4vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.022em;
  color: var(--fg);
}
.cat-hero h1 em { font-style: italic; color: var(--cat-color, var(--c-accent-deep)); }
.cat-lede { margin:0; color: var(--fg-soft); font-size: 17px; line-height: 1.65; max-width: 620px; }
.cat-hero-meta { margin-top:22px; display:flex; gap:18px; flex-wrap:wrap; font-size:12.5px; color: var(--fg-muted); }
.cat-hero-meta b { color: var(--fg); font-weight:600; }

/* ===== Section shell ===== */
.cat-section { margin-top: 56px; }
.cat-section > h2 {
  font-family: var(--font-serif); font-weight:400;
  font-size: clamp(24px, 2.2vw, 30px);
  letter-spacing: -0.015em;
  margin: 0 0 18px;
  color: var(--fg);
}
.cat-section > p.kicker { margin: -10px 0 18px; color: var(--fg-muted); font-size: 13.5px; }

/* ===== Pillar intro long-form ===== */
.cat-pillar {
  background: hsl(var(--surface) / 0.7);
  border: 1px solid var(--c-border);
  border-radius: 5px;
  padding: 28px 32px;
  font-size: 15.5px; line-height: 1.75; color: var(--fg-soft);
  max-width: 780px;
}
.cat-pillar p { margin: 0 0 14px; }
.cat-pillar p:last-child { margin-bottom: 0; }

/* ===== Sub-topic chips ===== */
.cat-subchips { display:flex; flex-wrap:wrap; gap:8px; }
.cat-subchip {
  padding: 7px 14px; border:1px solid var(--c-border); border-radius:999px;
  background: hsl(var(--surface) / 0.75);
  font-size: 12.5px; font-weight:500; color: var(--fg-soft);
  cursor:pointer; transition: all .2s var(--ease-organic);
}
.cat-subchip:hover { color: var(--fg); border-color: var(--c-border-strong); }
.cat-subchip.is-active { background: var(--cat-color, #3a7a5c); color:#fff; border-color: transparent; }

/* ===== Editor's pick ===== */
.cat-pick {
  display:grid; grid-template-columns: minmax(0,1.1fr) minmax(0,1fr);
  gap: 32px; align-items:center;
  border:1px solid var(--c-border);
  background: hsl(var(--surface) / 0.85);
  border-radius:5px; overflow:hidden;
}
.cat-pick-img { aspect-ratio: 16/11; background: var(--c-ink-05); }
.cat-pick-img img { width:100%; height:100%; object-fit:cover; display:block; }
.cat-pick-body { padding: 24px 28px; }
.cat-pick .cat-pick-label { display:inline-block; font-size:11px; font-weight:700; letter-spacing:.08em; text-transform:uppercase; color: var(--cat-color, #3a7a5c); margin-bottom:10px; }
.cat-pick h3 { font-family: var(--font-serif); font-weight:400; font-size: clamp(22px, 2vw, 28px); line-height:1.2; margin: 0 0 10px; letter-spacing:-0.015em; }
.cat-pick p { color: var(--fg-soft); font-size: 14.5px; line-height: 1.65; margin: 0 0 16px; }
.cat-pick .article-meta { font-size: 12px; color: var(--fg-muted); display:flex; gap:10px; align-items:center; }
.cat-pick .article-meta .dot { width:3px; height:3px; border-radius:50%; background: currentColor; opacity:.5; }

/* ===== Article grid ===== */
.cat-grid {
  display:grid; gap: 24px;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}
.cat-card {
  display:flex; flex-direction:column;
  background: hsl(var(--surface) / 0.85);
  border:1px solid var(--c-border);
  border-radius:5px; overflow:hidden;
  transition: transform .25s var(--ease-organic), box-shadow .25s var(--ease-organic), border-color .25s;
  cursor: pointer;
}
.cat-card:hover { transform: translateY(-3px); border-color: var(--c-border-strong); box-shadow: 0 14px 30px hsl(153 30% 25% / 0.10); }
.cat-card-thumb { aspect-ratio: 16/10; background: var(--c-ink-05); }
.cat-card-thumb img { width:100%; height:100%; object-fit:cover; display:block; }
.cat-card-body { padding: 16px 18px 18px; display:flex; flex-direction:column; gap:8px; flex:1; }
.cat-card-label { font-size:10.5px; font-weight:700; letter-spacing:.08em; text-transform:uppercase; color: var(--cat-color, #3a7a5c); }
.cat-card h3 { font-family: var(--font-serif); font-weight:400; font-size: 19px; line-height: 1.25; margin: 0; letter-spacing:-0.01em; }
.cat-card p { margin: 0; color: var(--fg-soft); font-size: 13.5px; line-height: 1.55; }
.cat-card .article-meta { margin-top:auto; font-size: 11.5px; color: var(--fg-muted); display:flex; gap:8px; align-items:center; }
.cat-card .article-meta .dot { width:3px; height:3px; border-radius:50%; background: currentColor; opacity:.5; }

/* ===== Load more ===== */
.cat-loadmore { margin-top: 28px; display:flex; justify-content:center; }

/* ===== FAQ accordion ===== */
.cat-faq { display:flex; flex-direction:column; gap:10px; max-width: 820px; }
.cat-faq details {
  border:1px solid var(--c-border); background: hsl(var(--surface) / 0.8);
  border-radius:5px; padding: 16px 20px;
  transition: border-color .2s;
}
.cat-faq details[open] { border-color: var(--c-border-strong); }
.cat-faq summary {
  list-style:none; cursor:pointer; font-weight:600; font-size: 14.5px; color: var(--fg);
  display:flex; align-items:center; justify-content:space-between; gap:12px;
}
.cat-faq summary::-webkit-details-marker { display:none; }
.cat-faq summary::after { content:'+'; font-size:20px; color: var(--fg-muted); transition: transform .2s; }
.cat-faq details[open] summary::after { transform: rotate(45deg); }
.cat-faq .cat-faq-body { margin-top: 12px; color: var(--fg-soft); font-size: 14px; line-height: 1.65; }

/* ===== Glossary strip ===== */
.cat-glossary { display:flex; flex-wrap:wrap; gap: 10px; }
.cat-glossary .term {
  padding: 10px 14px; border:1px solid var(--c-border); border-radius:5px;
  background: hsl(var(--surface) / 0.7);
  font-size: 12.5px; color: var(--fg-soft);
}
.cat-glossary .term b { color: var(--fg); font-weight:600; margin-right:6px; }

/* ===== Related categories rail ===== */
.cat-rail { display:grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.cat-tile {
  display:block;
  padding: 18px 20px;
  border:1px solid var(--c-border);
  border-radius:5px;
  background: hsl(var(--surface) / 0.85);
  transition: all .25s var(--ease-organic);
}
.cat-tile:hover { transform: translateY(-2px); border-color: var(--c-border-strong); box-shadow: 0 10px 22px hsl(153 30% 25% / 0.08); }
.cat-tile .tile-dot { width: 10px; height: 10px; border-radius: 50%; display:inline-block; margin-bottom: 12px; }
.cat-tile h4 { font-family: var(--font-serif); font-weight:400; font-size: 18px; margin: 0 0 6px; letter-spacing: -0.01em; }
.cat-tile p { margin: 0; font-size: 12.5px; color: var(--fg-muted); line-height: 1.5; }

/* ===== Newsletter CTA ===== */
.cat-cta {
  margin-top: 64px;
  padding: 36px 40px;
  border-radius: 5px;
  background:
    radial-gradient(600px 400px at 80% 0%, hsl(var(--accent) / 0.14), transparent 60%),
    hsl(var(--surface) / 0.9);
  border: 1px solid var(--c-border);
  display:flex; align-items:center; justify-content:space-between; gap: 24px; flex-wrap:wrap;
}
.cat-cta h3 { font-family: var(--font-serif); font-weight:400; font-size: 24px; margin: 0 0 6px; letter-spacing:-0.015em; }
.cat-cta p { margin: 0; color: var(--fg-soft); font-size: 14px; max-width: 460px; }

/* ===== Footer ===== */
.site-foot {
  margin-top: 64px;
  border-top:1px solid var(--c-border);
  background: hsl(var(--surface-soft) / 0.6);
  padding: 18px 40px;
  font-size: 12.5px; color: var(--fg-muted);
  display:flex; flex-direction:column; gap: 14px;
  max-width: 1360px; width:100%; margin-left:auto; margin-right:auto;
}
.site-foot a { color: var(--fg-soft); transition: color .2s var(--ease-organic); }
.site-foot a:hover { color: var(--c-accent); }
.foot-row { display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap; }
.foot-links { display:flex; gap:22px; flex-wrap:wrap; }
.foot-links a { font-weight:500; }
.foot-divider { height:1px; background: var(--c-border); width:100%; opacity:.7; }

/* ===== Loading + error host (PmEmpty target) ===== */
.cat-grid-host[hidden] { display:none; }
.cat-skeleton {
  display:grid; gap:24px;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}
.cat-skel-card {
  border:1px solid var(--c-border);
  border-radius:5px; overflow:hidden;
  background: hsl(var(--surface) / 0.6);
}
.cat-skel-card .b1 { aspect-ratio:16/10; background: linear-gradient(90deg, hsl(var(--surface-soft)) 0%, hsl(var(--surface)) 50%, hsl(var(--surface-soft)) 100%); background-size: 200% 100%; animation: shimmer 1.4s infinite; }
.cat-skel-card .b2 { height: 18px; margin: 16px 18px 8px; background: hsl(var(--surface-soft)); border-radius: 3px; }
.cat-skel-card .b3 { height: 12px; margin: 0 18px 8px; background: hsl(var(--surface-soft)); border-radius: 3px; width: 70%; }
.cat-skel-card .b4 { height: 12px; margin: 0 18px 16px; background: hsl(var(--surface-soft)); border-radius: 3px; width: 50%; }
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ===== Responsive ===== */
@media (max-width: 980px) {
  .nav { padding: 16px 22px; gap: 14px; }
  .cat-wrap { padding: 0 22px; }
  .cat-hero { padding: 30px 26px 28px; }
  .cat-pick { grid-template-columns: 1fr; }
  .cat-pick-body { padding: 20px 22px 24px; }
  .cat-cta { padding: 28px 24px; }
}
@media (max-width: 600px) {
  .site-foot { padding: 16px 22px; }
  .foot-row { flex-direction: column; text-align: center; }
  .foot-links { justify-content: center; }
}