/* ==========================================================================
   VPNQK — components.css
   Tabs · TOC · FAQ · pricing · line tables · platform cards · post cards
   callout · promo block · feature deck · fact band · steps · prose · preview
   ========================================================================== */

/* ---------- Tabs ---------- */
.tabs{min-width:0}
.tablist{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:4px;
  width:max-content;
  max-width:100%;
  padding:4px;
  border:1px solid var(--border);
  border-radius:var(--r-pill);
  background:var(--bg-panel);
  box-shadow:var(--shadow-card);
}
.tab{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  min-height:36px;
  padding:8px 16px;
  border:0;
  border-radius:var(--r-pill);
  background:transparent;
  font-family:inherit;
  font-size:13.5px;
  font-weight:600;
  line-height:1;
  color:var(--text-muted);
  white-space:nowrap;
  cursor:pointer;
  transition:color .16s ease,background-color .16s ease,box-shadow .16s ease;
}
.tab:hover{color:var(--text);background:var(--ink-a06)}
.tab[aria-selected="true"]{
  color:var(--accent-dark);
  background:var(--accent-a08);
  box-shadow:inset 0 0 0 1px var(--accent-a16);
}
.tab-panel{padding-top:24px;min-width:0}
.tab-panel[hidden]{display:none}
.tab-note{
  margin-top:12px;
  font-size:12.5px;
  color:var(--text-muted);
}

/* ---------- TOC (long pages) ---------- */
.toc-tabs{
  position:sticky;
  top:calc(var(--header-h) + 8px);
  z-index:20;
  display:flex;
  align-items:center;
  gap:6px;
  max-width:100%;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  overscroll-behavior-x:contain;
  padding:8px;
  border:1px solid var(--border);
  border-radius:var(--r-pill);
  background:var(--bg-head);
  box-shadow:var(--shadow-card);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  scrollbar-width:none;
}
.toc-tabs::-webkit-scrollbar{display:none}
.toc-tabs a{
  display:inline-flex;
  align-items:center;
  flex:none;
  min-height:32px;
  padding:6px 12px;
  border-radius:var(--r-pill);
  font-size:13px;
  color:var(--text-muted);
  white-space:nowrap;
  transition:color .16s ease,background-color .16s ease;
}
.toc-tabs a:hover{color:var(--text);background:var(--ink-a06)}
.toc-tabs a.is-current{
  color:var(--accent-dark);
  font-weight:600;
  background:var(--accent-a08);
  box-shadow:inset 0 0 0 1px var(--accent-a16);
}
body:has(.toc-tabs) section[id]{scroll-margin-top:calc(var(--header-h) + 84px)}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:10px;min-width:0}
.faq-item{
  border:1px solid var(--border);
  border-radius:var(--r-md);
  background:var(--bg-panel);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.faq-item summary{
  display:flex;
  align-items:center;
  gap:12px;
  min-height:50px;
  padding:14px 16px;
  font-size:15px;
  font-weight:600;
  line-height:1.5;
  color:var(--text);
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";
  flex:none;
  width:9px;
  height:9px;
  margin-left:auto;
  border-right:1.6px solid var(--text-muted);
  border-bottom:1.6px solid var(--text-muted);
  transform:rotate(45deg) translateY(-2px);
  transition:transform .18s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg) translateY(-2px)}
.faq-item[open] summary{color:var(--accent-dark)}
.faq-a{
  padding:0 16px 16px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--text-muted);
}
.faq-a strong{color:var(--text)}
.faq-cat{margin-bottom:26px}
.faq-cat > h2{
  margin-bottom:14px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--accent-dark);
}

/* ---------- Pricing ---------- */
.plan-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;
  align-items:stretch;
}
.plan-card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:14px;
  min-width:0;
  padding:26px 22px 22px;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  background:var(--bg-panel);
  box-shadow:var(--shadow-card);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.plan-card:hover{transform:translateY(-2px);border-color:var(--accent-a30)}
.plan-card.is-featured{
  border-color:var(--accent-a30);
  box-shadow:0 1px 0 var(--on-ink) inset,0 26px 44px -32px var(--accent-a45);
  background:linear-gradient(178deg,var(--accent-a04),var(--bg-panel) 42%);
}
.plan-card.is-current{
  border-color:var(--accent);
  box-shadow:0 1px 0 var(--on-ink) inset,0 0 0 1px var(--accent-a30),0 26px 44px -32px var(--accent-a45);
}
.plan-badge{
  position:absolute;
  top:-10px;
  right:16px;
  padding:3px 10px;
  border:1px solid var(--accent-a24);
  border-radius:var(--r-pill);
  background:var(--accent-a08);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.04em;
  color:var(--accent-dark);
  white-space:nowrap;
}
.plan-name{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--text);
}
.plan-price{
  display:flex;
  align-items:baseline;
  gap:6px;
  font-family:var(--font-display);
  color:var(--text);
}
.plan-price b{
  font-size:38px;
  font-weight:800;
  line-height:1;
  letter-spacing:-.03em;
  font-variant-numeric:tabular-nums;
}
.plan-price span{font-size:12.5px;font-weight:500;color:var(--text-muted)}
.plan-traffic{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.02em;
  color:var(--accent-dark);
}
.plan-list{display:flex;flex-direction:column;gap:8px;margin-top:2px}
.plan-list li{
  display:flex;
  align-items:flex-start;
  gap:8px;
  font-size:13.5px;
  line-height:1.6;
  color:var(--text-muted);
}
.plan-list svg{flex:none;margin-top:4px;color:var(--accent)}
.plan-cta{margin-top:auto;padding-top:6px}
.plan-cta .btn{width:100%;flex-shrink:0;white-space:nowrap}
.plan-foot{
  margin-top:16px;
  font-size:12.5px;
  color:var(--text-muted);
  text-align:center;
}
.pack-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:14px;
}
.pack-card{
  display:flex;
  flex-direction:column;
  gap:6px;
  min-width:0;
  padding:18px;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  background:var(--bg-panel-2);
}
.pack-card b{
  font-family:var(--font-mono);
  font-size:20px;
  font-weight:600;
  color:var(--text);
}
.pack-card span{font-size:12.5px;color:var(--text-muted)}
.pack-price{
  margin-top:6px;
  font-family:var(--font-display);
  font-size:18px;
  font-weight:700;
  color:var(--accent-dark);
}
.price-summary{
  max-width:820px;
  margin:0 auto 26px;
  text-align:center;
  font-size:14.5px;
  line-height:1.8;
  color:var(--text-muted);
}
.price-summary strong{color:var(--text)}
.included-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:12px;
}
.included-grid li{
  display:flex;
  align-items:flex-start;
  gap:9px;
  padding:12px 14px;
  border:1px solid var(--border-soft);
  border-radius:var(--r-md);
  background:var(--bg-panel);
  font-size:13.5px;
  color:var(--text);
}
.included-grid svg{flex:none;margin-top:4px;color:var(--accent)}

/* ---------- Tables (always wrapped in .table-scroll) ---------- */
.table-scroll{
  max-width:100%;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  overscroll-behavior-x:contain;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  background:var(--bg-panel);
}
.data-table{
  width:100%;
  border-collapse:collapse;
  font-size:13.5px;
  line-height:1.6;
}
.data-table caption{
  padding:12px 14px;
  font-size:12.5px;
  color:var(--text-muted);
  text-align:left;
}
.data-table th{
  padding:11px 14px;
  border-bottom:1px solid var(--border);
  background:var(--bg-panel-2);
  font-size:12px;
  font-weight:600;
  color:var(--text);
  text-align:left;
  white-space:nowrap;
  word-break:keep-all;
}
.data-table td{
  padding:11px 14px;
  border-bottom:1px solid var(--border-soft);
  color:var(--text);
  word-break:keep-all;
}
.data-table tbody tr:last-child td{border-bottom:0}
.data-table td.num{
  font-family:var(--font-mono);
  font-size:12.5px;
  font-variant-numeric:tabular-nums;
  white-space:nowrap;
}
.data-table .cell-strong{font-weight:600;color:var(--text)}
.data-table .cell-muted{color:var(--text-muted)}
.line-table{min-width:540px}
.cmp-table{min-width:660px}
.price-table{min-width:520px}
.region-head th{
  background:var(--bg-panel);
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.08em;
  color:var(--accent-dark);
  border-bottom:1px solid var(--border-soft);
}
.table-note{
  margin-top:10px;
  font-size:12.5px;
  color:var(--text-muted);
}

/* ---------- Platform / client cards ---------- */
.plat-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(176px,1fr));
  gap:14px;
}
.plat-grid .plat,
.plat-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  min-width:0;
  padding:18px;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  background:var(--bg-panel);
  box-shadow:var(--shadow-card);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.plat-card:hover{
  transform:translateY(-2px);
  border-color:var(--accent-a30);
  box-shadow:0 1px 0 var(--on-ink) inset,0 22px 36px -30px var(--accent-a45);
}
.plat-card .pi{
  width:26px;
  height:26px;
  flex:none;
  color:var(--text);
}
.plat-card h3{font-size:14.5px;font-weight:600}
.plat-card p{font-size:12.5px;line-height:1.7;color:var(--text-muted)}
.plat-card .btn{margin-top:auto;width:100%;flex-shrink:0;white-space:nowrap}
.client-grid{
  display:grid;
  grid-template-columns:repeat(5,minmax(0,1fr));
  gap:12px;
}
.client-card{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:8px;
  min-width:0;
  padding:16px;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  background:var(--bg-panel);
  box-shadow:var(--shadow-card);
  transition:transform .18s ease,border-color .18s ease;
}
.client-card:hover{transform:translateY(-2px);border-color:var(--accent-a30)}
.client-card .pi{width:22px;height:22px;color:var(--text)}
.client-card b{font-size:13px;font-weight:600;color:var(--text)}
.client-card span{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.04em;
  color:var(--text-muted);
}

/* ---------- Fact band ---------- */
.fact-band{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  border:1px solid var(--border);
  border-radius:var(--r-md);
  background:var(--bg-panel);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.fact-item{
  min-width:0;
  padding:16px 18px;
  border-left:1px solid var(--border-soft);
}
.fact-item:first-child{border-left:0}
.fact-value{
  display:block;
  font-family:var(--font-mono);
  font-size:19px;
  font-weight:600;
  line-height:1.3;
  letter-spacing:-.01em;
  color:var(--text);
  font-variant-numeric:tabular-nums;
}
.fact-label{
  display:block;
  margin-top:2px;
  font-size:11.5px;
  letter-spacing:.04em;
  color:var(--text-muted);
}

/* ---------- Blog cards ---------- */
.post-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;
}
.post-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  min-width:0;
  padding:22px;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  background:var(--bg-panel);
  box-shadow:var(--shadow-card);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.post-card:hover{
  transform:translateY(-2px);
  border-color:var(--accent-a30);
  box-shadow:0 1px 0 var(--on-ink) inset,0 24px 40px -30px var(--accent-a45);
}
.post-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 10px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.04em;
  color:var(--text-muted);
}
.post-title{
  font-family:var(--font-display);
  font-size:17px;
  font-weight:700;
  line-height:1.45;
  letter-spacing:-.01em;
  color:var(--text);
}
.post-summary{
  font-size:13.5px;
  line-height:1.75;
  color:var(--text-muted);
}
.post-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:auto;
  padding-top:6px;
  font-size:12.5px;
  font-weight:600;
  color:var(--accent-dark);
}
.post-card:hover .post-more{color:var(--accent)}
.post-list{display:flex;flex-direction:column;gap:12px}
.post-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:8px 18px;
  align-items:center;
  min-width;
  min-width:0;
  padding:18px 20px;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  background:var(--bg-panel);
  box-shadow:var(--shadow-card);
  transition:border-color .18s ease,transform .18s ease;
}
.post-row:hover{border-color:var(--accent-a30);transform:translateY(-1px)}
.post-row h3{font-size:15px;font-weight:600;line-height:1.5}
.post-row p{font-size:13px;color:var(--text-muted)}
.post-row .post-meta{grid-column:1 / -1}

/* stamp used by blog hero cards */
.stamp{
  position:absolute;
  top:-14px;
  right:18px;
  display:grid;
  place-items:center;
  width:74px;
  height:74px;
  border:1px solid var(--accent-a30);
  border-radius:50%;
  background:var(--bg-panel);
  box-shadow:0 1px 0 var(--on-ink) inset,0 14px 26px -20px var(--accent-a45);
  transform:rotate(-9deg);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--accent-dark);
  pointer-events:none;
}
.stamp::before{
  content:"";
  position:absolute;
  inset:5px;
  border:1px dashed var(--accent-a30);
  border-radius:50%;
}

/* ---------- Chips / badges / tags ---------- */
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  max-width:100%;
  overflow:hidden;
  padding:4px 10px;
  border:1px solid var(--border);
  border-radius:var(--r-pill);
  background:var(--bg-panel);
  font-size:12px;
  line-height:1.5;
  color:var(--text);
  white-space:nowrap;
  text-overflow:ellipsis;
}
.chip svg{flex:none;color:var(--accent)}
.chip.is-accent{
  border-color:var(--accent-a16);
  background:var(--accent-a08);
  color:var(--accent-dark);
}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;
  align-items:center;
  gap:5px;
  max-width:100%;
  overflow:hidden;
  padding:3px 9px;
  border:1px solid var(--accent-a16);
  border-radius:var(--r-pill);
  background:var(--accent-a08);
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.03em;
  line-height:1.5;
  color:var(--accent-dark);
  white-space:nowrap;
  text-overflow:ellipsis;
}
.tag.is-muted{
  border-color:var(--border);
  background:var(--bg-panel-2);
  color:var(--text-muted);
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  max-width:100%;
  overflow:hidden;
  padding:3px 10px;
  border:1px solid var(--border);
  border-radius:var(--r-pill);
  background:var(--bg-panel);
  font-size:11.5px;
  font-weight:600;
  color:var(--text);
  white-space:nowrap;
  text-overflow:ellipsis;
}
.badge.is-ok{border-color:var(--success-a24);background:var(--success-a10);color:var(--success)}
.badge.is-warn{border-color:var(--warn-a24);background:var(--warn-a10);color:var(--warn)}
.badge.is-err{border-color:var(--error-a24);background:var(--error-a10);color:var(--error)}

/* ---------- Callout ---------- */
.callout{
  position:relative;
  min-width:0;
  padding:15px 18px 15px 20px;
  border:1px solid var(--border);
  border-left:3px solid var(--accent);
  border-radius:var(--r-md);
  background:var(--accent-a04);
  font-size:14.5px;
  line-height:1.8;
  color:var(--text);
}
.callout strong{font-weight:600}
.callout.is-warn{border-left-color:var(--warn);background:var(--warn-a10)}
.callout.is-ok{border-left-color:var(--success);background:var(--success-a10)}
.callout .callout-title{
  display:block;
  margin-bottom:4px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--accent-dark);
}
.callout.is-warn .callout-title{color:var(--warn)}
.callout.is-ok .callout-title{color:var(--success)}

/* ---------- Promo block (article footer) ---------- */
.promo-block{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:18px 22px;
  min-width:0;
  padding:22px 24px;
  border:1px solid var(--accent-a20);
  border-radius:var(--r-lg);
  background:linear-gradient(140deg,var(--accent-a08),var(--bg-panel) 62%);
  box-shadow:0 1px 0 var(--on-ink) inset,0 22px 38px -32px var(--accent-a45);
}
.promo-text{flex:1 1 280px;min-width:0}
.promo-brand{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-display);
  font-size:15px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--text);
}
.promo-brand img{width:20px;height:20px;border-radius:var(--r-xs);flex:none}
.promo-line{
  margin-top:6px;
  font-size:13.5px;
  line-height:1.75;
  color:var(--text-muted);
}
.promo-block .btn{flex-shrink:0;white-space:nowrap}

/* ---------- Feature deck: index + detail ---------- */
.deck{
  display:grid;
  grid-template-columns:296px minmax(0,1fr);
  gap:24px;
  align-items:start;
}
.deck-index{
  display:flex;
  flex-direction:column;
  gap:2px;
  min-width:0;
  padding:6px 0;
}
.deck-item{
  display:flex;
  align-items:center;
  gap:12px;
  width:100%;
  min-height:50px;
  padding:11px 14px;
  border:0;
  border-left:2px solid transparent;
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  background:transparent;
  font-family:inherit;
  font-size:14px;
  font-weight:500;
  line-height:1.5;
  color:var(--text-muted);
  text-align:left;
  cursor:pointer;
  transition:color .16s ease,background-color .16s ease,border-color .16s ease;
}
.deck-item:hover{color:var(--text);background:var(--ink-a04)}
.deck-item[aria-selected="true"]{
  border-left-color:var(--accent);
  background:var(--accent-a08);
  color:var(--accent-dark);
  font-weight:600;
}
.deck-num{
  flex:none;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.04em;
  color:var(--text-muted);
}
.deck-item[aria-selected="true"] .deck-num{color:var(--accent)}
.deck-panel{
  position:relative;
  min-width:0;
  padding:26px 26px 24px;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  background:var(--bg-panel);
  box-shadow:var(--shadow-card);
}
.deck-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:18px;
  margin-bottom:12px;
}
.deck-head h3{font-size:20px;line-height:1.35;color:var(--text)}
.deck-figure{
  flex:none;
  width:54px;
  height:54px;
  color:var(--accent);
  opacity:.55;
}
.deck-body{font-size:14.5px;line-height:1.85;color:var(--text-muted)}
.deck-body strong{color:var(--text)}
.deck-facts{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.deck-panel[hidden]{display:none}

/* ---------- Steps ---------- */
.steps{
  display:flex;
  flex-direction:column;
  gap:12px;
  counter-reset:step;
}
.step{
  position:relative;
  min-width:0;
  padding:18px 20px 18px 58px;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  background:var(--bg-panel);
  box-shadow:var(--shadow-card);
}
.step::before{
  counter-increment:step;
  content:counter(step,decimal-leading-zero);
  position:absolute;
  left:18px;
  top:18px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.02em;
  color:var(--accent-dark);
}
.step h3{margin-bottom:6px;font-size:15.5px}
.step p{font-size:14px;line-height:1.8;color:var(--text-muted)}
.step p + p{margin-top:8px}

/* ---------- Help section (short title column) ---------- */
.help-section{
  display:grid;
  grid-template-columns:220px minmax(0,1fr);
  gap:26px;
  padding:26px 0;
  border-top:1px solid var(--border-soft);
}
.help-section:first-of-type{border-top:0;padding-top:0}
.help-title{min-width:0}
.help-title h2{font-size:18px;line-height:1.4}
.help-body{min-width:0;display:flex;flex-direction:column;gap:10px}

/* ---------- Prose (articles / handbook) ---------- */
.reading-wrap{max-width:820px;margin-inline:auto;min-width:0}
.prose{
  min-width:0;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
}
.prose > * + *{margin-top:18px}
.prose h2{
  margin-top:42px;
  font-size:26px;
  line-height:1.3;
  letter-spacing:-.02em;
  text-wrap:balance;
}
.prose h3{
  margin-top:28px;
  font-size:18.5px;
  line-height:1.4;
}
.prose p{font-size:16px;line-height:1.85;color:var(--text)}
.prose ul,
.prose ol{padding-left:22px;color:var(--text)}
.prose ul{list-style:disc}
.prose ol{list-style:decimal}
.prose li + li{margin-top:8px}
.prose li{font-size:15.5px;line-height:1.8}
.prose a{color:var(--accent-dark);text-decoration:underline;text-underline-offset:2px}
.prose a:hover{color:var(--accent)}
/* buttons inside prose keep their own colors (see .prose a) */
.prose a.btn-primary,
.prose a.btn-primary:hover{color:var(--on-ink);text-decoration:none}
.prose img{border-radius:var(--r-md);border:1px solid var(--border)}
.prose hr{margin:32px 0}
.prose blockquote{margin-top:22px}
.prose > .data-table{
  display:block;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  max-width:100%;
  min-width:0;
  border:1px solid var(--border);
  border-radius:var(--r-md);
}
.article-head{
  position:relative;
  overflow-x:clip;
  padding-bottom:8px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 12px;
  margin-bottom:12px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.04em;
  color:var(--text-muted);
}
.article-title{
  font-family:var(--font-display);
  font-size:clamp(26px,3.6vw,40px);
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.025em;
  color:var(--text);
  text-wrap:balance;
}
.article-lede{
  margin-top:14px;
  font-size:16px;
  line-height:1.8;
  color:var(--text-muted);
}

/* ---------- Feature/index card list (generic) ---------- */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:16px;
}
.feature-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  min-width:0;
  padding:22px;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  background:var(--bg-panel);
  box-shadow:var(--shadow-card);
}
.feature-card .fc-icon{
  display:grid;
  place-items:center;
  width:34px;
  height:34px;
  border:1px solid var(--accent-a16);
  border-radius:var(--r-sm);
  background:var(--accent-a06);
  color:var(--accent-dark);
}
.feature-card h3{font-size:15.5px}
.feature-card p{font-size:13.5px;line-height:1.8;color:var(--text-muted)}

/* ---------- Preview-only helpers (design-preview.html) ---------- */
.demo-block{
  display:flex;
  flex-direction:column;
  gap:16px;
  min-width:0;
  padding:24px;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  background:var(--bg-panel);
  box-shadow:var(--shadow-card);
}
.demo-label{
  display:flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.08em;
  color:var(--text-muted);
}
.demo-label::before{
  content:"";
  width:12px;
  height:1px;
  background:var(--accent-a45);
}
.demo-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
}
.demo-stack{display:flex;flex-direction:column;gap:18px;min-width:0}
.demo-grid-2{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:18px;
  align-items:start;
}
.swatches{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(148px,1fr));
  gap:12px;
}
.swatch{
  display:flex;
  flex-direction:column;
  gap:8px;
  min-width:0;
  padding:10px;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  background:var(--bg-panel);
}
.swatch-chip{
  height:44px;
  border:1px solid var(--border-soft);
  border-radius:var(--r-sm);
}
.swatch-name{
  font-family:var(--font-mono);
  font-size:10.5px;
  line-height:1.4;
  color:var(--text);
  overflow-wrap:anywhere;
}
.swatch-val{
  font-family:var(--font-mono);
  font-size:10px;
  line-height:1.4;
  color:var(--text-muted);
  overflow-wrap:anywhere;
}
.type-spec{display:flex;flex-direction:column;gap:14px;min-width:0}
.spec-row{
  display:grid;
  grid-template-columns:112px minmax(0,1fr);
  gap:16px;
  align-items:baseline;
  padding-bottom:12px;
  border-bottom:1px dashed var(--border-soft);
}
.spec-row:last-child{border-bottom:0;padding-bottom:0}
.spec-key{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.04em;
  color:var(--text-muted);
}
.spec-body{min-width:0}
.spec-body p{color:var(--text)}
.preview-note{
  font-size:12.5px;
  line-height:1.75;
  color:var(--text-muted);
}
.preview-hero{
  position:relative;
  overflow-x:clip;
  border:1px solid var(--border-soft);
  border-radius:var(--r-lg);
  background:linear-gradient(180deg,var(--bg-top) 0%,var(--bg) 52%,var(--bg-bottom) 100%);
}
.preview-hero::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right,var(--grid-line) 1px,transparent 1px),
    linear-gradient(to bottom,var(--grid-line) 1px,transparent 1px);
  background-size:34px 34px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,.25) 62%,transparent 90%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,.25) 62%,transparent 90%);
}
.preview-hero > *{position:relative;z-index:1}

/* ---------- Responsive for components ---------- */
@media (max-width:1024px){
  .plan-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .client-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .deck{grid-template-columns:240px minmax(0,1fr);gap:18px}
}
@media (max-width:860px){
  .deck{grid-template-columns:1fr;gap:14px}
  .deck-index{
    flex-direction:row;
    overflow-x:auto;
    -webkit-overflow-scrolling:touch;
    padding:0 0 6px;
    scrollbar-width:none;
  }
  .deck-index::-webkit-scrollbar{display:none}
  .deck-item{
    flex:none;
    width:auto;
    min-height:44px;
    border-left:0;
    border-bottom:2px solid transparent;
    border-radius:var(--r-sm) var(--r-sm) 0 0;
    white-space:nowrap;
  }
  .deck-item[aria-selected="true"]{border-left-color:transparent;border-bottom-color:var(--accent)}
  .help-section{grid-template-columns:1fr;gap:12px}
}
@media (max-width:768px){
  .plan-grid{grid-template-columns:1fr;gap:16px}
  .pack-grid{grid-template-columns:1fr}
  .post-grid{grid-template-columns:1fr}
  .fact-band{grid-template-columns:repeat(2,minmax(0,1fr))}
  .fact-item{border-left:0;border-top:1px solid var(--border-soft)}
  .fact-item:nth-child(-n+2){border-top:0}
  .fact-item:nth-child(even){border-left:1px solid var(--border-soft)}
  .client-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .spec-row{grid-template-columns:1fr;gap:6px}
  .post-row{grid-template-columns:1fr}
}
@media (max-width:640px){
  .tablist{width:100%;justify-content:flex-start}
  .tab{flex:1 1 auto;padding:8px 12px;font-size:13px}
  .toc-tabs{top:calc(var(--header-h) + 6px);border-radius:var(--r-md);padding:6px}
  .toc-tabs a{min-height:34px;padding:6px 10px;font-size:12.5px}
  .deck-panel{padding:20px 18px}
  .deck-figure{display:none}
  .promo-block{padding:18px}
  .promo-block .btn{width:100%}
  .plan-card{padding:22px 18px 18px}
  .demo-block{padding:18px}
  .stamp{width:60px;height:60px;font-size:10px;right:12px;top:-10px}
  .step{padding:16px 16px 16px 48px}
  .step::before{left:16px;top:16px}
}