:root{
    --bg:#faf6f1; --surface:#fff; --ink:#2a211a; --muted:#756454;
    --accent:#e2571b; --accent-dark:#bf4413; --tint:#fdeee2;
    --line:#eadfd3; --radius:16px; --shadow:0 10px 30px rgba(90,50,20,.08);
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{font-family:"Segoe UI",system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
  a{color:var(--accent-dark);text-decoration:none}
  a:hover{text-decoration:underline}
  ul{list-style:none}
  .container{max-width:1120px;margin:0 auto;padding:0 20px}

  /* ---------- Шапка ---------- */
  .site-header{position:sticky;top:0;z-index:100;background:rgba(250,246,241,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
  .header-inner{display:flex;align-items:center;gap:20px;min-height:64px}
  .logo{font-size:20px;font-weight:800;white-space:nowrap;color:var(--ink)}
  .logo:hover{text-decoration:none}
  .logo span{color:var(--accent)}
  .logo small{display:block;font-size:11px;font-weight:500;color:var(--muted);margin-top:-3px}
  .nav{margin-left:auto}
  .nav>ul{display:flex;gap:2px}
  .nav>ul>li{position:relative}
  .nav>ul>li>a{display:block;padding:9px 10px;border-radius:10px;font-weight:600;font-size:14px;color:var(--ink)}
  .nav>ul>li>a:hover{background:var(--tint);text-decoration:none}
  .drop{position:absolute;top:100%;left:0;min-width:220px;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:8px;display:none}
  .has-drop:hover .drop,.has-drop:focus-within .drop{display:block}
  .drop a{display:block;padding:7px 10px;border-radius:8px;font-size:13px;color:var(--muted)}
  .drop a:hover{background:var(--tint);color:var(--accent-dark);text-decoration:none}
  .burger{display:none;margin-left:auto;background:none;border:none;font-size:26px;cursor:pointer}

  /* ---------- Хлебные крошки ---------- */
  .breadcrumbs{padding:16px 0 0;font-size:13px;color:var(--muted)}
  .breadcrumbs a{color:var(--muted)}
  .breadcrumbs a:hover{color:var(--accent-dark)}
  .breadcrumbs span{margin:0 6px}

  /* ---------- Хедер калькулятора ---------- */
  .calc-hero{background:linear-gradient(140deg,#fff3e8 0%,#ffe0c2 100%);border-bottom:1px solid var(--line);padding:44px 0 36px;margin-bottom:36px}
  .cat-tag{display:inline-block;background:#fff;color:var(--accent-dark);font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.6px;padding:6px 14px;border-radius:999px;margin-bottom:16px;box-shadow:var(--shadow)}
  .calc-hero h1{font-size:42px;line-height:1.12;margin-bottom:12px}
  .calc-hero .desc{color:#6b5a4a;font-size:17px;max-width:640px;margin-bottom:24px}
  .calc-features{display:flex;gap:14px;flex-wrap:wrap}
  .calc-feature{background:rgba(255,255,255,.7);border:1px solid rgba(226,87,27,.2);border-radius:999px;padding:8px 16px;font-size:14px;font-weight:600;color:#6b5a4a}

  /* ---------- Раскладка ---------- */
  .calc-layout{display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start}
  .btn{display:inline-block;padding:12px 22px;border-radius:12px;font-weight:700;border:none;cursor:pointer;font-size:15px;text-align:center;transition:.2s}
  .btn-primary{background:var(--accent-dark);color:#fff}
  .btn-primary:hover{background:var(--accent-dark);text-decoration:none}
  .btn-lg{padding:15px 36px;font-size:16px;width:100%}
  .btn-ghost{border:2px solid var(--line);color:var(--ink)}
  .btn-ghost:hover{border-color:var(--accent);text-decoration:none}

  /* ---------- Карточка калькулятора ---------- */
  .calc-card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:32px;box-shadow:var(--shadow);margin-bottom:28px}
  .calc-card h2{font-size:22px;margin-bottom:24px;display:flex;align-items:center;gap:10px}
  .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:24px}
  .form-field{display:flex;flex-direction:column;gap:8px}
  .form-field.full{grid-column:1 / -1}
  .form-field label{font-size:14px;font-weight:600}
  .form-field label .req{color:var(--accent)}
  .form-field input,.form-field select{padding:13px 15px;border:1px solid var(--line);border-radius:11px;font-size:15px;background:var(--bg);color:var(--ink);transition:.2s;width:100%}
  .form-field input:focus,.form-field select:focus{outline:none;border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px var(--tint)}
  .checkbox-field{justify-content:center}
  .checkbox-field label{display:flex;align-items:center;gap:10px;font-size:15px;cursor:pointer}
  .checkbox-field input{width:auto;height:20px;accent-color:var(--accent)}
  .hint{font-size:12px;color:var(--muted)}

  /* ---------- Результаты ---------- */
  .result-panel{background:var(--surface);border:2px solid var(--accent);border-radius:20px;padding:32px;box-shadow:var(--shadow);margin-bottom:28px;animation:fadeIn .4s}
  @keyframes fadeIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
  .result-panel h2{font-size:22px;margin-bottom:24px}
  .result-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:20px}
  .result-item{background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:20px;text-align:center}
  .result-item.highlight{background:linear-gradient(150deg,#fff3e8,#ffd9b8);border-color:var(--accent)}
  .result-label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px}
  .result-value{display:block;font-size:40px;font-weight:800;line-height:1;color:var(--ink)}
  .result-item.highlight .result-value{color:var(--accent-dark)}
  .result-unit{display:block;font-size:14px;color:var(--muted);margin-top:4px}
  .result-note{background:#fff8f0;border-left:4px solid #f5a623;border-radius:10px;padding:16px 20px;font-size:15px;margin-bottom:20px}
  .result-note b{color:#c77700}
  .result-cta{background:var(--ink);border-radius:14px;padding:24px;color:#f4ece4}
  .result-cta p{font-size:15px;margin-bottom:16px}
  .result-cta b{color:#fff}
  .result-cta form{display:flex;gap:10px;flex-wrap:wrap}
  .result-cta input{flex:1;min-width:200px;padding:13px 16px;border:none;border-radius:10px;font-size:15px}
  .result-reset{margin-top:16px;text-align:center}
  .result-reset a{font-size:14px;color:var(--muted);cursor:pointer}
  .result-reset a:hover{color:var(--accent-dark)}

  /* ---------- «Как мы считаем» ---------- */
  .how-calc{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:28px;box-shadow:var(--shadow);margin-bottom:28px}
  .how-calc h3{font-size:18px;margin-bottom:14px}
  .formula{background:#2a211a;color:#ffd9b8;border-radius:12px;padding:18px;text-align:center;font-size:18px;font-weight:700;margin:16px 0;font-family:"Courier New",monospace}
  .how-calc p{font-size:14px;color:var(--muted);margin-bottom:10px}
  .how-calc ul{margin:10px 0 10px 20px;list-style:disc;font-size:14px;color:var(--muted)}
  .disclaimer{background:var(--tint);border-radius:10px;padding:14px 16px;font-size:13px;color:var(--accent-dark);margin-top:14px}

  /* ---------- Сайдбар ---------- */
  .sidebar{display:flex;flex-direction:column;gap:24px;position:sticky;top:84px}
  .sidebar-widget{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:var(--shadow)}
  .lead-widget{background:linear-gradient(150deg,#fff3e8,#ffd9b8);border:2px solid var(--accent)}
  .lead-widget h4{font-size:18px;margin-bottom:8px}
  .lead-widget p{font-size:14px;color:var(--muted);margin-bottom:16px}
  .lead-widget form{display:flex;flex-direction:column;gap:10px}
  .lead-widget input{padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:14px;width:100%}
  .lead-widget small{display:block;color:var(--muted);font-size:11px;margin-top:8px;text-align:center}
  .sidebar-widget h4{font-size:15px;text-transform:uppercase;letter-spacing:.5px;margin-bottom:14px;color:var(--muted)}
  .subcat-link{display:flex;justify-content:space-between;align-items:center;padding:11px 14px;background:var(--tint);border-radius:10px;margin-bottom:8px;font-weight:600;font-size:14px;color:var(--ink)}
  .subcat-link:hover{background:#ffd9b8;text-decoration:none}
  .popular-item{display:flex;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}
  .popular-item:last-child{border-bottom:none}
  .popular-num{font-size:22px;font-weight:800;color:var(--accent);opacity:.5;min-width:28px}
  .popular-item a{font-size:14px;line-height:1.4;color:var(--ink)}
  .popular-item a:hover{color:var(--accent-dark)}

  /* ---------- Секции / сетки ---------- */
  .section-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:24px}
  .section-head h2{font-size:28px}
  .more{color:var(--accent-dark);font-weight:700;font-size:14px}
  .related{padding:56px 0 20px}
  .grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  .card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .2s}
  .card:hover{transform:translateY(-4px)}
  .cover{height:130px;display:flex;align-items:center;justify-content:center;font-size:54px}
  .c1{background:linear-gradient(135deg,#ffddc4,#ff8a5c)} .c2{background:linear-gradient(135deg,#ffe8c2,#f5a623)}
  .c3{background:linear-gradient(135deg,#dcefe4,#7fb98a)}
  .card-body{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1}
  .tag{color:var(--accent-dark);font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.5px}
  .card h3{font-size:16px;line-height:1.35}
  .card h3 a{color:var(--ink)}
  .card h3 a:hover{color:var(--accent-dark);text-decoration:none}
  .card p{color:var(--muted);font-size:14px}
  .meta{margin-top:auto;padding-top:10px;color:var(--muted);font-size:12px;display:flex;gap:14px}

  /* ---------- BOFU ---------- */
  .bofu{background:var(--ink);color:#f4ece4;border-radius:20px;padding:44px;margin:40px 0;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
  .bofu h2{font-size:28px;margin-bottom:12px}
  .bofu p{color:#c9b8a8;font-size:15px;margin-bottom:20px}
  .bofu ul{margin:0}
  .bofu li{padding:6px 0;font-size:14px}
  .bofu li::before{content:"✓ ";color:#7fb98a;font-weight:700}
  .bofu-form{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.15);border-radius:16px;padding:28px}
  .bofu-form h3{font-size:18px;margin-bottom:16px}
  .bofu-form input,.bofu-form select{width:100%;padding:12px 14px;border:1px solid rgba(255,255,255,.2);border-radius:10px;background:rgba(255,255,255,.08);color:#fff;font-size:14px;margin-bottom:12px}
  .bofu-form input::placeholder{color:#a09080}
  .bofu-form select{color:#a09080}
  .bofu-form select option{color:var(--ink)}
  .bofu-form .btn{width:100%}
  .bofu-form small{display:block;text-align:center;font-size:11px;color:#756454;margin-top:10px}

  /* ---------- SEO ---------- */
  .seo-block{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:44px 0;margin-top:40px}
  .seo-block h2{font-size:24px;margin-bottom:14px}
  .seo-block p{color:var(--muted);font-size:15px;max-width:820px;margin-bottom:12px}
  .seo-block h3{font-size:17px;margin:20px 0 8px;color:var(--ink)}

  /* ---------- Подвал ---------- */
  .site-footer{background:#241b14;color:#b9a898;padding:44px 0 20px;font-size:14px}
  .footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:28px}
  .footer-grid h4{color:#f4ece4;font-size:13px;text-transform:uppercase;letter-spacing:.6px;margin-bottom:12px}
  .footer-grid a{display:block;padding:3px 0;color:#b9a898}
  .footer-grid a:hover{color:#fff}
  .footer-bottom{margin-top:32px;padding-top:16px;border-top:1px solid #3a2d22;font-size:13px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

  /* ---------- Мобильная версия ---------- */
  @media(max-width:960px){
    .burger{display:block}
    .nav{position:fixed;top:64px;left:0;right:0;background:var(--surface);box-shadow:var(--shadow);max-height:calc(100vh - 64px);overflow:auto;padding:14px 20px 24px;transform:translateY(-130%);transition:.3s;margin:0}
    .nav.open{transform:translateY(0)}
    .nav>ul{flex-direction:column}
    .drop{position:static;display:block;box-shadow:none;border:none;background:transparent;padding:0 0 10px 14px}
    .calc-layout{grid-template-columns:1fr}
    .sidebar{position:static}
    .form-grid{grid-template-columns:1fr}
    .result-grid{grid-template-columns:1fr}
    .grid{grid-template-columns:1fr}
    .bofu{grid-template-columns:1fr}
    .calc-hero h1{font-size:32px}
  }