/* ==== Удобнаа! — дизайн-система: минимализм + один акцент ==== */
:root{
  --bg:#fbfbfa; --surface:#ffffff; --ink:#14151a; --muted:#6b7180;
  --line:#e9e9ec; --line-strong:#d9dae0;
  --accent:#3b5bdb; --accent-ink:#ffffff; --accent-soft:#eef1fe;
  --ok:#0ca678; --warn:#e8590c;
  --radius:14px; --radius-sm:10px;
  --shadow:0 1px 2px rgba(20,21,26,.04),0 8px 24px -12px rgba(20,21,26,.12);
  --wrap:1080px; --font:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0e0f13; --surface:#16181f; --ink:#eceef3; --muted:#9096a3;
    --line:#242732; --line-strong:#31343f;
    --accent:#7c93ff; --accent-ink:#0e0f13; --accent-soft:#1a1f38;
    --shadow:0 1px 2px rgba(0,0,0,.3),0 12px 32px -16px rgba(0,0,0,.6);
  }
}
:root[data-theme="dark"]{
  --bg:#0e0f13; --surface:#16181f; --ink:#eceef3; --muted:#9096a3;
  --line:#242732; --line-strong:#31343f;
  --accent:#7c93ff; --accent-ink:#0e0f13; --accent-soft:#1a1f38;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 12px 32px -16px rgba(0,0,0,.6);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);
  font-size:17px;line-height:1.6;letter-spacing:-.01em;-webkit-font-smoothing:antialiased;
  display:flex;flex-direction:column;min-height:100vh}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.2;letter-spacing:-.02em;margin:0}
h1{font-size:clamp(1.7rem,3.4vw,2.4rem);font-weight:760}
h2{font-size:1.35rem;font-weight:720;margin:0 0 .6em}
img{max-width:100%}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}

/* header */
.site-head{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;gap:18px;height:60px}
.brand{display:flex;flex-direction:column;align-items:flex-start;gap:0;line-height:1.02;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand-name{font-weight:800;font-style:italic;font-size:1.6rem;letter-spacing:-.045em;background:linear-gradient(96deg,#3b5bdb 0%,#6366f1 52%,#8b5cf6 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:#3b5bdb;transform:skewX(-4deg);transform-origin:left center;padding-right:.12em}
.brand-sub{font-style:italic;font-weight:600;font-size:.6rem;letter-spacing:.015em;color:var(--muted);white-space:nowrap;margin-top:2px}
.nav{margin-left:auto;display:flex;gap:6px;align-items:center}
.nav a{color:var(--muted);font-size:.95rem;padding:8px 12px;border-radius:9px}
.nav a:hover{color:var(--ink);background:var(--surface);text-decoration:none}
.icon-btn{width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--line);
  background:var(--surface);border-radius:10px;cursor:pointer;color:var(--ink);font-size:1rem}
.icon-btn:hover{border-color:var(--line-strong)}

/* hero */
.hero{padding:44px 0 26px;text-align:center}
.hero p.lead{color:var(--muted);font-size:1.15rem;max-width:620px;margin:16px auto 0}
.search{max-width:520px;margin:26px auto 0;position:relative}
.search input{width:100%;height:52px;padding:0 18px 0 46px;border:1px solid var(--line-strong);
  background:var(--surface);border-radius:13px;font:inherit;color:var(--ink);box-shadow:var(--shadow)}
.search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.search svg{position:absolute;left:15px;top:16px;color:var(--muted)}

/* category + grid */
.section{padding:26px 0}
.section-head{display:flex;align-items:baseline;gap:12px;margin-bottom:16px}
.section-head .count{color:var(--accent);background:var(--accent-soft);font-size:.78rem;font-weight:600;padding:3px 11px;border-radius:20px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.card{display:flex;flex-direction:column;gap:6px;padding:20px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;color:var(--ink)}
a.card:hover{text-decoration:none;border-color:color-mix(in srgb,var(--accent) 45%,var(--line));transform:translateY(-3px);box-shadow:var(--shadow)}
a.card:hover .ico{transform:translateY(-1px) scale(1.06)}
.card .ico{font-size:1.35rem;width:44px;height:44px;display:grid;place-items:center;
  background:var(--accent-soft);border-radius:12px;margin-bottom:8px;transition:transform .18s ease}
.card h3{font-size:1.05rem;font-weight:680;letter-spacing:-.01em}
.card p{margin:0;color:var(--muted);font-size:.92rem;line-height:1.5}
.card.hidden{display:none}

/* tool page layout */
.tool-main{padding:22px 0 10px;flex:1}
.crumbs{color:var(--muted);font-size:.86rem;margin-bottom:14px;display:flex;gap:7px;flex-wrap:wrap}
.crumbs a{color:var(--muted)}
.tool-head{max-width:720px;margin-bottom:22px}
.tool-head h1{margin-bottom:10px}
.tool-head p{color:var(--muted);margin:0;font-size:1.06rem}

.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow)}
.field{margin-bottom:16px}
.field:last-child{margin-bottom:0}
label{display:block;font-size:.9rem;font-weight:600;margin-bottom:7px}
label .hint{font-weight:400;color:var(--muted)}
input[type=number],input[type=text],select{width:100%;height:48px;padding:0 14px;font:inherit;
  color:var(--ink);background:var(--bg);border:1px solid var(--line-strong);border-radius:var(--radius-sm)}
input:focus,select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.seg{display:flex;gap:6px;flex-wrap:wrap}
.seg button{flex:1;min-width:90px;height:44px;border:1px solid var(--line-strong);background:var(--bg);
  color:var(--ink);border-radius:var(--radius-sm);cursor:pointer;font:inherit;font-size:.92rem;transition:background .14s ease,border-color .14s ease,color .14s ease}
.seg button[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn{height:50px;padding:0 22px;border:none;border-radius:var(--radius-sm);background:var(--accent);
  color:var(--accent-ink);font:inherit;font-weight:640;font-size:1.02rem;cursor:pointer;width:100%}
.btn{transition:filter .15s ease,transform .06s ease}
.btn:hover{filter:brightness(1.06)}
.btn:active{transform:translateY(1px)}
.btn.secondary{background:var(--bg);color:var(--ink);border:1px solid var(--line-strong)}

.result{margin-top:18px;padding:24px;background:var(--accent-soft);border-radius:var(--radius);
  border:1px solid color-mix(in srgb,var(--accent) 20%,transparent)}
.result .big{font-size:clamp(1.5rem,7vw,2.4rem);font-weight:800;letter-spacing:-.035em;line-height:1.1;overflow-wrap:anywhere;word-break:break-word}
.result .sub{color:var(--muted);margin-top:6px;font-size:.95rem}
.result.empty{background:var(--bg);border-style:dashed;border-color:var(--line-strong);color:var(--muted)}
.result-list{margin-top:16px;display:grid;gap:0}
.result-list .kv{display:flex;justify-content:space-between;gap:6px 12px;flex-wrap:wrap;padding:11px 0;border-top:1px solid color-mix(in srgb,var(--accent) 14%,transparent)}
.result-list .kv b{font-variant-numeric:tabular-nums;overflow-wrap:anywhere;text-align:right}

/* drop zone (file tools) */
.drop{border:1.5px dashed var(--line-strong);border-radius:var(--radius);padding:34px 20px;text-align:center;
  background:var(--bg);cursor:pointer;transition:.15s}
.drop:hover,.drop.over{border-color:var(--accent);background:var(--accent-soft)}
.drop .di{font-size:2rem}
.drop p{margin:8px 0 0;color:var(--muted)}
.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px;margin-top:16px}
.thumb{border:1px solid var(--line);border-radius:10px;padding:8px;font-size:.8rem;text-align:center;background:var(--surface)}
.thumb img{border-radius:6px;aspect-ratio:1;object-fit:cover;width:100%}
.thumb .nm{margin-top:6px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.thumb{position:relative}
.thumb .ph{aspect-ratio:1;display:flex;align-items:center;justify-content:center;background:var(--accent-soft);border-radius:6px;color:var(--muted);font-size:1.4rem}
.thumb .ph.err{background:color-mix(in srgb,var(--warn) 14%,transparent);color:var(--warn)}
.thumb .rm{position:absolute;top:6px;right:6px;width:24px;height:24px;padding:0;line-height:1;border:none;border-radius:50%;background:rgba(0,0,0,.55);color:#fff;cursor:pointer;font-size:15px;z-index:2}
.thumb .rm:hover{background:rgba(0,0,0,.75)}
.thumb .dl{margin-top:8px;height:36px;line-height:36px;padding:0;font-size:.82rem;width:100%}
.res-bar{margin-top:16px}
.res-cnt{display:block;color:var(--muted);font-size:.92rem;margin-bottom:10px}
.res-actions{display:flex;gap:8px;flex-wrap:wrap}
.res-actions .btn{flex:1;min-width:150px;height:46px;padding:0 16px;font-size:.9rem}
.arc-card{border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;margin-top:14px;background:var(--surface)}
.arc-head b{word-break:break-all}
.arc-head .muted{color:var(--muted);font-weight:400;font-size:.9rem}
.filelist{margin-top:10px;max-height:340px;overflow:auto;border:1px solid var(--line);border-radius:var(--radius-sm)}
.filerow{display:flex;align-items:center;gap:10px;padding:8px 12px;border-bottom:1px solid var(--line);font-size:.9rem}
.filerow:last-child{border-bottom:none}
.filerow .fn{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.filerow .fs{color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}
.btn.mini{height:32px;padding:0 14px;font-size:.82rem;width:auto;flex:0 0 auto}

/* article / SEO text */
.prose{max-width:720px;margin:34px 0}
.prose h2{margin-top:30px}
.prose p,.prose li{color:var(--ink);opacity:.92}
.prose ul{padding-left:22px}
.faq details{border-top:1px solid var(--line);padding:14px 0}
.faq summary{cursor:pointer;font-weight:640;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"+";color:var(--accent);font-weight:700;margin-right:10px}
.faq details[open] summary::before{content:"−"}
.faq p{margin:10px 0 0;color:var(--muted)}

.related{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.related a{font-size:.92rem;padding:8px 14px;border:1px solid var(--line);border-radius:20px;color:var(--ink)}
.related a:hover{border-color:var(--accent);text-decoration:none}

/* footer */
.site-foot{border-top:1px solid var(--line);margin-top:40px;padding:30px 0;color:var(--muted);font-size:.9rem}
.site-foot .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:24px;margin-bottom:22px}
.site-foot a{color:var(--muted);display:block;padding:3px 0}
.site-foot a:hover{color:var(--ink)}
.site-foot .fbrand{font-weight:800;font-style:italic;color:var(--ink);font-size:1.2rem;letter-spacing:-.03em}
.site-foot .bottom{padding-top:18px;border-top:1px solid var(--line)}
@media (max-width:640px){
  body{font-size:16px}
  .nav a:not(.keep){display:none}
  .site-foot .cols{grid-template-columns:1fr 1fr}
  .row2{grid-template-columns:1fr}
  /* компактная главная на телефоне */
  .hero{padding:24px 0 16px}
  .hero p.lead{font-size:1.02rem;margin-top:12px}
  .search{margin-top:18px}
  .section{padding:16px 0}
  .section-head{margin-bottom:12px}
  .grid{grid-template-columns:1fr 1fr;gap:9px}
  .card{padding:13px;gap:4px}
  .card .ico{width:36px;height:36px;font-size:1.15rem;margin-bottom:6px}
  .card h3{font-size:.92rem;line-height:1.2}
  .card p{display:none}
  .panel{padding:16px}
  .result{padding:18px}
  .tool-head{margin-bottom:16px}
}

/* ==== поделиться ==== */
.share{margin-top:14px}
.share-toggle{display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 20px;
  border:1px solid var(--line-strong);background:var(--surface);color:var(--ink);border-radius:var(--radius-sm);
  cursor:pointer;font:inherit;font-weight:640}
.share-toggle:hover{border-color:var(--accent)}
.share-toggle svg{color:var(--accent)}
.share-list{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.share-list button{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 16px;
  border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:var(--radius-sm);
  cursor:pointer;font:inherit;font-size:.94rem}
.share-list button:hover{border-color:var(--accent)}
.share-list .ic{width:20px;height:20px;border-radius:6px;display:inline-grid;place-items:center;
  color:#fff;font-size:.7rem;font-weight:700}

.share{margin-top:18px}
.share-title{display:flex;align-items:center;gap:8px;font-size:.92rem;font-weight:600;color:var(--muted);margin-bottom:11px}
.share-title svg{color:var(--accent)}
.share-list{margin-top:0}
.share-hint{margin-top:11px;color:var(--muted);font-size:.82rem;line-height:1.4}

/* график + опции (сложный процент) */
.chart{display:block;width:100%;height:auto;margin-top:16px;border:1px solid var(--line);
  border-radius:var(--radius);background:var(--surface)}
.chart[hidden]{display:none}
.opts{margin-top:18px;display:grid;gap:12px}
.chk{display:flex;align-items:center;gap:10px;font-weight:500;font-size:.98rem;cursor:pointer;margin:0}
.chk input{width:20px;height:20px;accent-color:var(--accent);cursor:pointer;flex:none}

/* модалка предпросмотра картинки */
.modal{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;
  padding:20px;background:rgba(10,11,15,.55);backdrop-filter:blur(3px)}
.modal.open{display:flex}
.modal-card{background:var(--surface);border:1px solid var(--line);border-radius:18px;max-width:400px;
  width:100%;padding:18px;box-shadow:var(--shadow);max-height:92vh;overflow:auto}
.modal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.modal-head b{font-size:1.05rem}
.modal-close{border:none;background:none;font-size:1.5rem;line-height:1;cursor:pointer;color:var(--muted)}
.modal-card img{display:block;width:100%;border-radius:12px;border:1px solid var(--line)}
.modal-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:14px}
.modal-actions .full{grid-column:1/-1}
.modal-actions button{height:46px;border:1px solid var(--line);background:var(--surface);color:var(--ink);
  border-radius:10px;font:inherit;font-weight:600;cursor:pointer;display:flex;align-items:center;
  justify-content:center;gap:8px}
.modal-actions button:hover{border-color:var(--accent)}
.modal-actions .primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.modal-actions .d{width:11px;height:11px;border-radius:50%;flex:none}
.modal-hint{margin-top:10px;font-size:.82rem;color:var(--muted);text-align:center}

/* раскрывающийся блок (нестраховые периоды) */
details.pen-extra{border:1px solid var(--line-strong);border-radius:var(--radius-sm);padding:12px 14px;margin-bottom:16px}
details.pen-extra summary{cursor:pointer;font-weight:600;list-style:none}
details.pen-extra summary::-webkit-details-marker{display:none}
details.pen-extra summary::before{content:"+ ";color:var(--accent);font-weight:700}
details.pen-extra[open] summary::before{content:"− "}
.note-warn{margin-top:12px;padding:12px 14px;border-radius:var(--radius-sm);background:color-mix(in srgb,var(--warn) 12%,transparent);border:1px solid color-mix(in srgb,var(--warn) 30%,transparent);color:var(--ink);font-size:.92rem}
.pen-note{margin-top:16px;padding:12px 14px;border-radius:var(--radius-sm);background:var(--surface-2,color-mix(in srgb,var(--ink) 4%,transparent));border:1px dashed var(--line);color:var(--muted);font-size:.88rem;line-height:1.5}
.uline{display:flex;gap:10px;margin-top:10px}
.uline input{flex:1;min-width:0}
.uline select{flex:0 0 46%;max-width:46%}
.swapwrap{display:flex;justify-content:center;margin:10px 0}
.btn.swap{width:auto;height:40px;padding:0 18px;font-size:.92rem}
.conv-note{margin-top:14px;padding:12px 14px;border-radius:var(--radius-sm);background:var(--accent-soft);color:var(--ink);font-size:.95rem;font-weight:600}
textarea{width:100%;padding:12px 14px;border:1px solid var(--line-strong);border-radius:var(--radius-sm);background:var(--bg);color:var(--ink);font:inherit;font-size:1rem;resize:vertical;box-sizing:border-box;line-height:1.5}
.stats{display:flex;flex-wrap:wrap;gap:16px;margin-top:10px;color:var(--muted);font-size:.92rem}
.stats b{color:var(--ink)}
.tbtns{display:flex;flex-wrap:wrap;gap:8px}
.tbtns .btn{width:auto;flex:0 0 auto;height:40px;padding:0 14px;font-size:.86rem}
.genout{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:1.15rem;word-break:break-all;line-height:1.8}
.swatch{height:84px;border-radius:var(--radius);border:1px solid var(--line);margin-top:8px}
.shades{display:grid;grid-template-columns:repeat(auto-fill,minmax(88px,1fr));gap:8px;margin-top:8px}
.sw-cell{height:58px;border:1px solid var(--line);border-radius:8px;cursor:pointer;font:inherit;font-size:.74rem;font-weight:700;display:flex;align-items:flex-end;justify-content:center;padding-bottom:6px}
input[type=color]{cursor:pointer;border:1px solid var(--line-strong);border-radius:var(--radius-sm);background:var(--bg)}

/* ==== реакции «Было удобно?» ==== */
.fb{margin-top:22px;padding:18px 20px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--surface);text-align:center}
.fb-q{font-weight:640;margin-bottom:13px;font-size:1rem}
.fb-btns{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.fb-btn{display:inline-flex;align-items:center;gap:9px;height:48px;padding:0 18px;
  border:1px solid var(--line-strong);background:var(--bg);color:var(--ink);border-radius:26px;
  cursor:pointer;font:inherit;font-weight:600;font-size:.98rem;
  transition:transform .08s ease,border-color .15s ease,background .15s ease}
.fb-btn:hover{border-color:var(--accent)}
.fb-btn:active{transform:scale(.95)}
.fb-btn .fb-emoji{font-size:1.25rem;line-height:1}
.fb-btn .fb-count{font-variant-numeric:tabular-nums;background:var(--accent-soft);color:var(--accent);
  padding:2px 9px;border-radius:20px;font-size:.85rem;font-weight:700;min-width:26px}
.fb-yes.sel{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 12%,transparent)}
.fb-yes.sel .fb-count{background:color-mix(in srgb,var(--ok) 20%,transparent);color:var(--ok)}
.fb-no.sel{border-color:var(--warn);background:color-mix(in srgb,var(--warn) 12%,transparent)}
.fb-no.sel .fb-count{background:color-mix(in srgb,var(--warn) 20%,transparent);color:var(--warn)}

/* burst-анимация (в стиле тг-реакций) */
.fb-layer{position:fixed;inset:0;pointer-events:none;z-index:9999;overflow:hidden}
.fb-particle{position:fixed;transform:translate(-50%,-50%);will-change:transform,opacity;line-height:1;
  filter:drop-shadow(0 4px 10px rgba(0,0,0,.25));
  animation:fbfly 3s cubic-bezier(.15,.62,.24,1) forwards}
@keyframes fbfly{
  0%{opacity:0;transform:translate(-50%,-50%) scale(.15) rotate(0)}
  8%{opacity:1;transform:translate(calc(-50% + var(--dx,0px)*.10),calc(-50% + var(--dy,-160px)*.10)) scale(var(--sc,1)) rotate(calc(var(--rot,0deg)*.12))}
  74%{opacity:.96}
  100%{opacity:0;transform:translate(calc(-50% + var(--dx,0px)),calc(-50% + var(--dy,-160px))) scale(var(--sc2,.6)) rotate(var(--rot,0deg))}
}
.fb-pop{position:fixed;transform:translate(-50%,-50%);line-height:1;will-change:transform,opacity;
  filter:drop-shadow(0 8px 20px rgba(0,0,0,.3));animation:fbpop 1.55s cubic-bezier(.2,.7,.3,1) forwards}
@keyframes fbpop{
  0%{opacity:0;transform:translate(-50%,-50%) scale(.15)}
  20%{opacity:1;transform:translate(-50%,-50%) scale(1.5)}
  55%{opacity:.95;transform:translate(-50%,-50%) scale(1.75)}
  100%{opacity:0;transform:translate(-50%,-50%) scale(2.7)}
}
@media (prefers-reduced-motion:reduce){.fb-particle,.fb-pop{display:none}}

/* ==== реклама (Яндекс.РСЯ) — аккуратно, с резервом высоты ==== */
.ad{position:relative;margin:26px 0;min-height:100px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;overflow:hidden}
.ad-label{position:absolute;top:-8px;left:12px;font-size:.6rem;letter-spacing:.09em;text-transform:uppercase;
  color:var(--muted);background:var(--bg);padding:0 7px}
.ad-demo{border:1px dashed var(--line-strong);border-radius:var(--radius);min-height:130px;
  background:repeating-linear-gradient(45deg,transparent,transparent 11px,
  color-mix(in srgb,var(--muted) 7%,transparent) 11px,color-mix(in srgb,var(--muted) 7%,transparent) 22px)}
.ad-demo-t{color:var(--muted);font-size:.9rem;font-weight:600}
/* плавающий футер */
.ad-sticky{position:fixed;left:0;right:0;bottom:0;z-index:80;display:flex;align-items:center;
  justify-content:center;gap:10px;min-height:76px;padding:8px 46px 8px 14px;
  background:color-mix(in srgb,var(--surface) 95%,transparent);backdrop-filter:saturate(160%) blur(10px);
  border-top:1px solid var(--line);box-shadow:0 -6px 20px -12px rgba(0,0,0,.35)}
.ad-sticky .ad-label{position:static;background:none}
.ad-sticky-x{position:absolute;right:10px;top:50%;transform:translateY(-50%);width:32px;height:32px;
  border:1px solid var(--line);background:var(--surface);border-radius:9px;cursor:pointer;color:var(--muted);
  font-size:1.15rem;line-height:1;display:grid;place-items:center}
.ad-sticky-x:hover{color:var(--ink);border-color:var(--line-strong)}
body.has-ad-sticky{padding-bottom:88px}
@media(max-width:640px){.ad-sticky{min-height:62px} body.has-ad-sticky{padding-bottom:74px}}