:root{
  --bg:#f6f7f9;
  --card:#ffffff;
  --text:#0f172a;
  --muted:#64748b;
  --border:#e2e8f0;
  --accent:#111827;
  --ok:#16a34a;
  --err:#dc2626;
  --radius:14px;
  --shadow: 0 8px 30px rgba(2,6,23,.06);
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Liberation Sans", sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.45;
}

a{ color:inherit; text-decoration:none; }
a:hover{ text-decoration:underline; }

.container{
  width:min(980px, calc(100% - 32px));
  margin:0 auto;
}

.header{
  position:sticky;
  top:0;
  z-index:10;
  background:rgba(246,247,249,.9);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--border);
}

.header-row{
  display:flex;
  gap:16px;
  align-items:center;
  justify-content:space-between;
  padding:12px 0;
}

.brand{
  display:flex;
  gap:10px;
  align-items:center;
}
.logo{ width:34px; height:34px; display:block; }
.brand-text{ font-weight:800; letter-spacing:.2px; }

.nav{ display:flex; gap:12px; }
.nav a{
  padding:8px 10px;
  border-radius:10px;
  color:var(--muted);
}
.nav a:hover{
  background:var(--card);
  border:1px solid var(--border);
  text-decoration:none;
  color:var(--text);
}

.breadcrumbs{
  width:min(980px, calc(100% - 32px));
  margin:14px auto 0 auto;
  color:var(--muted);
  font-size:14px;
}
.breadcrumbs a{ color:var(--muted); }
.breadcrumbs span{ color:var(--text); }

main.container{
  padding:14px 0 26px 0;
}

h1{ margin:10px 0 12px 0; font-size:32px; }
h2{ margin:22px 0 10px 0; font-size:20px; }
h3{ margin:18px 0 10px 0; font-size:18px; }
h4{ margin:14px 0 8px 0; font-size:16px; }

.lead{ color:var(--muted); font-size:16px; margin-top:0; }

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:14px;
  box-shadow:var(--shadow);
}

.muted{ color:var(--muted); }

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid var(--accent);
  background:var(--accent);
  color:#fff;
  cursor:pointer;
  font-weight:700;
}
.btn:hover{ opacity:.92; text-decoration:none; }

.btn-ghost{
  background:transparent;
  color:var(--text);
  border:1px solid var(--border);
}
.btn-ghost:hover{ background:#f8fafc; }

.inp{
  width:100%;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid var(--border);
  outline:none;
  background:#fff;
  font-size:15px;
}
.inp:focus{
  border-color:#cbd5e1;
  box-shadow: 0 0 0 4px rgba(148,163,184,.25);
}

.row{
  display:flex;
  gap:16px;
  align-items:flex-end;
  justify-content:space-between;
  flex-wrap:wrap;
}
.row-actions{
  display:flex;
  gap:10px;
  align-items:center;
  flex-wrap:wrap;
}

.big{ font-size:20px; font-weight:800; }

.quick-form{
  display:flex;
  gap:10px;
  align-items:center;
}
.quick-form .inp{ flex:1; }

.err{
  border-color: rgba(220,38,38,.35);
  background: rgba(220,38,38,.06);
}
.ok{
  border-color: rgba(22,163,74,.35);
  background: rgba(22,163,74,.06);
}

ul.related, .calc-list{
  margin:0;
  padding-left:18px;
}

.grid-related ul.related{
  margin:0;
  padding-left:18px;
}

.grid-related .related{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap:8px 16px;
  padding-left:0;
  list-style:none;
}
.grid-related .related li a{
  display:block;
  padding:10px 12px;
  border:1px solid var(--border);
  border-radius:12px;
  background:#fff;
}
.grid-related .related li a:hover{
  background:#f8fafc;
  text-decoration:none;
}

.comment{
  border-top:1px solid var(--border);
  padding:12px 0;
}
.comment:first-child{ border-top:none; padding-top:0; }
.comment-head{ display:flex; gap:10px; align-items:baseline; }
.comment-body{ margin-top:6px; color:var(--text); }

.footer{
  margin-top:26px;
  padding:18px 0;
  border-top:1px solid var(--border);
  background:#fff;
}

@media (max-width: 740px){
  .grid-related .related{ grid-template-columns: repeat(1, minmax(0, 1fr)); }
  h1{ font-size:26px; }
  .quick-form{ flex-direction:column; align-items:stretch; }
}
.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:14px;margin:8px 0 18px}
@media(max-width:900px){.hero{grid-template-columns:1fr}}
.logo img{border-radius:14px;display:block}
.hero-search{display:flex;gap:10px;margin-top:10px}
.inp-lg{padding:12px 12px;font-size:16px}
.btn-lg{padding:12px 14px}
.hero-meta{margin-top:10px}
.stats{display:flex;flex-wrap:wrap;gap:10px}
.stat{background:rgba(0,0,0,.04);border-radius:999px;padding:6px 10px}
.section-head{margin:18px 0 10px}
.grid-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px}
.card-link{text-decoration:none;color:inherit}
.card-link:hover{transform:translateY(-1px);box-shadow:0 8px 18px rgba(0,0,0,.08)}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:900px){.grid-2{grid-template-columns:1fr}}
.bullets{margin:0;padding-left:18px}
.ol-compact{margin:0;padding-left:18px}
.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:6px;list-style:none;padding-left:0}
.related-grid li{margin:0}
.brand { display:flex; align-items:center; gap:10px; text-decoration:none; }
.brand-logo { display:block; height:32px; width:auto; }
.brand-text { 
  position:absolute; 
  left:-9999px; 
  width:1px; height:1px; 
  overflow:hidden; 
}
.footer-counters { margin-top: 10px; }
.footer-counters img { max-width: 100%; height: auto; }
/* чтобы меню не обрезалось шапкой/контейнером */
.header, .header-row, .container { overflow: visible !important; }

/* actions справа */
.header-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}

/* dropdown wrapper */
.lang-dd{ position:relative; display:inline-flex; }

/* button */
.lang-dd-btn{
  display:inline-flex; align-items:center; gap:10px;
  padding:8px 10px;
  border:1px solid rgba(0,0,0,.14);
  background:#fff;
  border-radius:14px;
  cursor:pointer;
  font:inherit;
  line-height:1;
  white-space:nowrap;
  user-select:none;
  box-shadow:0 1px 0 rgba(0,0,0,.03);
}
.lang-dd-btn:hover{ border-color:rgba(0,0,0,.26); }
.lang-dd-btn:focus{ outline:none; box-shadow:0 0 0 3px rgba(0,0,0,.10); }

.lang-dd-cur{
  font-weight:800;
  max-width:170px;
  overflow:hidden;
  text-overflow:ellipsis;
}
.lang-dd-caret{ opacity:.65; font-size:12px; }

/* menu */
.lang-dd-menu{
  position:absolute;
  right:0;
  top:calc(100% + 8px);
  width:320px;
  max-height:60vh;
  overflow:auto;
  padding:8px;
  background:#fff;
  border:1px solid rgba(0,0,0,.12);
  border-radius:16px;
  box-shadow:0 18px 40px rgba(0,0,0,.16);
  z-index:99999;
  display:none;
}

/* open state */
.lang-dd.is-open .lang-dd-menu{ display:block; }

/* items */
.lang-dd-item{
  display:flex; align-items:center; gap:10px;
  padding:10px 10px;
  border-radius:14px;
  text-decoration:none;
  color:inherit;
  border:1px solid transparent;
}
.lang-dd-item:hover{
  background:rgba(0,0,0,.04);
  border-color:rgba(0,0,0,.08);
}
.lang-dd-item.is-active{
  background:rgba(0,0,0,.06);
  border-color:rgba(0,0,0,.14);
  font-weight:900;
}
.lang-dd-item.is-active::after{
  content:"✓";
  margin-left:auto;
  opacity:.85;
  font-weight:900;
}

.lang-flag{ font-size:18px; width:22px; text-align:center; }
.lang-name{ flex:1; }
.lang-code{ opacity:.55; font-size:12px; font-weight:800; letter-spacing:.04em; }

@media (max-width: 760px){
  .lang-dd-menu{ width:260px; }
  .lang-dd-cur{ max-width:110px; }
}