/* ============ ВЫБИРАЙ v2 — редизайн по sravni ============ */
:root{
  --bg:#F1F2F4;          /* фон страницы (sravni: светло-серый) */
  --card:#FFFFFF;
  --ink:#171D23;          /* почти чёрный текст */
  --ink2:#636F7D;         /* вторичный текст */
  --line:#E0E3E8;
  --blue:#00AFFF;         /* акцент sravni-синий */
  --blue-d:#0086CF;
  --green:#0DD149;        /* главный акцент (наш бренд) */
  --green-d:#0BB63E;
  --r-sm:10px; --r-md:14px; --r-lg:18px;
  --sh:0 10px 24px rgba(20,36,56,.07);
  --sh-h:0 16px 32px rgba(20,36,56,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);
  font-family:'Open Sans','Segoe UI',Arial,sans-serif;font-size:15px;line-height:1.5}

/* ===== ШАПКА ===== */
.header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.header-inner{max-width:1160px;margin:0 auto;padding:0 16px;height:60px;
  display:flex;align-items:center;gap:20px}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:19px;color:var(--ink);text-decoration:none;flex-shrink:0}
.logo-mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--green) 0%,var(--green-d) 100%);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:17px;font-weight:800}
.hnav{display:flex;gap:2px;flex:1;flex-wrap:nowrap;overflow:visible;align-items:center}
.hnav a{color:var(--ink2);padding:8px 11px;font-size:14px;font-weight:600;border-radius:9px;text-decoration:none;white-space:nowrap}
.hnav a:hover,.hnav a.active{color:var(--ink);background:#F1F2F4}
.h-right{display:flex;align-items:center;gap:10px;flex-shrink:0}
.h-btn{background:var(--blue);color:#fff;border-radius:10px;padding:9px 18px;font-weight:700;font-size:14px;text-decoration:none;white-space:nowrap;transition:background .15s}
.h-btn:hover{background:var(--blue-d)}

/* выпадающее меню */
.hnav-item{position:relative;flex-shrink:0}
.hnav-drop{display:none;position:absolute;top:calc(100% + 6px);left:0;background:#fff;border:1px solid var(--line);
  border-radius:14px;box-shadow:var(--sh-h);padding:8px;min-width:230px;z-index:100}
.hnav-item:hover .hnav-drop{display:block}
.hnav-drop a{display:flex;align-items:center;gap:10px;padding:9px 14px;font-size:14px;color:var(--ink2) !important;border-radius:9px;font-weight:500}
.hnav-drop a:hover{background:#F1F2F4;color:var(--ink) !important}
.hnav-arrow{font-size:9px;opacity:.55;margin-left:3px}

/* ===== HERO (только на главной) ===== */
.hero{background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);padding:28px 0 8px}
.hero-inner{max-width:1160px;margin:0 auto;padding:0 16px}
.hero h1{font-size:34px;font-weight:800;letter-spacing:-.5px;margin:0 0 6px}
.hero .sub{color:var(--ink2);font-size:16px;margin:0 0 18px}

/* ===== КОНТЕНТ ===== */
.container{max-width:1160px;margin:0 auto;padding:22px 16px 60px}
.h1{font-size:30px;font-weight:800;letter-spacing:-.4px;margin:6px 0 6px;color:var(--ink)}
.pagehead{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:18px}
.sub{color:var(--ink2);font-size:14.5px}

/* ===== КАРТОЧКИ-ПРОДУКТЫ (ucard) ===== */
.u-list{display:flex;flex-direction:column;gap:12px}
.ucard{background:var(--card);border-radius:var(--r-lg);box-shadow:var(--sh);border:1px solid rgba(224,227,232,.6);
  transition:box-shadow .18s,transform .18s;overflow:hidden}
.ucard:hover{box-shadow:var(--sh-h);transform:translateY(-1px)}
.uc-head{display:flex;align-items:center;gap:14px;width:100%;padding:16px 20px;background:none;border:none;cursor:pointer;text-align:left}
.uc-logo,.uc-letter{width:46px;height:46px;border-radius:12px;background:#F1F2F4;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:18px;color:var(--ink2);flex-shrink:0;overflow:hidden}
.uc-logo img{width:100%;height:100%;object-fit:contain}
.uc-mid{flex:1;min-width:0}
.uc-name{display:block;font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.25;margin-bottom:2px}
.uc-sub{display:block;font-size:13px;color:var(--ink2)}
.uc-key{text-align:right;flex-shrink:0;margin-right:4px}
.uc-key b{display:block;font-size:20px;font-weight:800;color:var(--green-d);letter-spacing:-.3px}
.uc-key span{font-size:11.5px;color:var(--ink2)}
.uc-arrow{color:#B7BDC7;flex-shrink:0;transition:transform .2s}
.ucard.open .uc-arrow{transform:rotate(180deg)}
.uc-body{display:none;padding:0 20px 18px;border-top:1px solid #F0F1F4}
.ucard.open .uc-body{display:block}
.bd-row{display:flex;justify-content:space-between;gap:12px;padding:8px 0;border-bottom:1px dashed #EEF0F3;font-size:14px}
.bd-row span{color:var(--ink2)}
.bd-row b{color:var(--ink);font-weight:600;text-align:right}
.cd-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:12px;flex-wrap:wrap}
.cd-src{font-size:11.5px;color:#9AA1AC}
.btn{background:var(--blue);color:#fff;border-radius:10px;padding:10px 22px;font-weight:700;font-size:14px;text-decoration:none;
  display:inline-flex;align-items:center;gap:6px;transition:background .15s}
.btn:hover{background:var(--blue-d)}

/* кнопка «Показать ещё» */
.more-wrap{display:flex;justify-content:center;padding:14px 0 4px}
.more-btn{background:#fff;border:1.5px solid var(--line);border-radius:12px;padding:11px 26px;font-size:14.5px;font-weight:700;
  color:var(--ink);cursor:pointer;transition:border-color .15s,background .15s}
.more-btn:hover{border-color:var(--blue);color:var(--blue-d);background:#fff}

/* ===== КАЛЬКУЛЯТОР ===== */
.calc{background:#fff;border-radius:var(--r-lg);box-shadow:var(--sh);padding:20px 22px;margin:0 0 22px;border:1px solid rgba(224,227,232,.6)}
.calc h2{font-size:18px;font-weight:700;margin:0 0 4px}
.calc p{color:var(--ink2);font-size:13.5px;margin:0 0 14px}
.calc-row{display:flex;gap:14px;flex-wrap:wrap;align-items:flex-end}
.calc-field{display:flex;flex-direction:column;gap:5px;flex:1;min-width:150px}
.calc-field label{font-size:12.5px;color:var(--ink2);font-weight:600}
.calc-field input,.calc-field select{border:1.5px solid var(--line);border-radius:10px;padding:10px 12px;font-size:15px;
  font-family:inherit;color:var(--ink);background:#fff;outline:none;width:100%}
.calc-field input:focus,.calc-field select:focus{border-color:var(--blue)}
.calc-res{display:none;background:#F0FBF4;border-radius:12px;padding:12px 16px;gap:18px;flex-wrap:wrap;align-items:center}
.calc-res b{color:var(--green-d);font-size:16px}
.calc-hint{flex-basis:100%;font-size:12px;color:#9AA1AC}

/* ===== ПОДВАЛ ===== */
.footer{background:var(--ink);color:#C9CED6;margin-top:auto;padding:34px 0 26px}
.footer-inner{max-width:1160px;margin:0 auto;padding:0 16px;display:flex;flex-wrap:wrap;gap:28px;justify-content:space-between}
.footer a{color:#C9CED6;text-decoration:none;font-size:13.5px;display:block;padding:3px 0}
.footer a:hover{color:#fff}
.footer .f-col b{display:block;color:#fff;font-size:14px;margin-bottom:8px}
.footer .f-about{max-width:340px;font-size:12.5px;color:#8D94A0;line-height:1.6}

/* ===== АДАПТИВ ===== */
@media(max-width:900px){
  .hero h1{font-size:26px}
  .h1{font-size:24px}
}
@media(max-width:760px){
  .header-inner{gap:10px;height:auto;padding:10px 12px;flex-wrap:wrap}
  .hnav{order:3;flex-basis:100%;overflow-x:auto;flex-wrap:nowrap;-webkit-overflow-scrolling:touch;padding-bottom:4px;gap:2px}
  .hnav a{padding:7px 10px;font-size:13px}
  .hnav-drop{display:none !important}
  .hnav-arrow{display:none}
  .h-right{margin-left:auto}
  .h-btn{padding:8px 14px;font-size:13px}
  .uc-head{padding:14px;gap:10px}
  .uc-name{font-size:15px}
  .uc-key b{font-size:17px}
  .uc-logo,.uc-letter{width:40px;height:40px}
  .calc{padding:16px}
  .calc-row{flex-direction:column;align-items:stretch}
  .calc-field{min-width:100%}
  .calc-res{flex-direction:column;align-items:flex-start;gap:6px}
  .uc-body{padding:0 14px 14px}
  .footer-inner{flex-direction:column}
}

/* AI-кнопка в шапке */
.h-btn.h-ai{background:#171D23;color:#fff;display:inline-flex;align-items:center;gap:6px}
.h-btn.h-ai:hover{background:#0DD149}