:root{
  --accent:#e8622c; --accent-d:#c94f1e; --ink:#1d2733; --muted:#5b6b7c;
  --bg:#f6f8fa; --line:#e3e9ef; --ok:#1d9e56; --err:#d23b3b;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font:16px/1.6 "Segoe UI",Arial,sans-serif;color:var(--ink);background:#fff}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
a{color:var(--accent);text-decoration:none} a:hover{text-decoration:underline}
h1{font-size:30px;line-height:1.25;margin-bottom:14px}
h2{font-size:24px;margin:36px 0 14px}
h3{font-size:19px}
p{margin:10px 0}
.muted{color:var(--muted)}
img{max-width:100%}
.btn{display:inline-block;background:var(--accent);color:#fff;border:0;border-radius:8px;
  padding:12px 22px;font-size:16px;cursor:pointer;text-align:center}
.btn:hover{background:var(--accent-d);text-decoration:none}
.btn--small{padding:8px 16px;font-size:14px}
.btn--full{width:100%}
.btn--ghost{background:#fff;color:var(--accent);border:2px solid var(--accent)}

/* шапка */
.topbar{background:var(--ink);color:#fff}
.topbar-in{display:flex;align-items:center;gap:18px;padding:12px 16px;flex-wrap:wrap}
.logo{font-size:24px;font-weight:800;color:#fff;letter-spacing:.5px}
.logo span{color:var(--accent)}
.logo--light{font-size:22px}
.topbar-info{display:flex;flex-direction:column;font-size:13px;color:#c6d0da;line-height:1.4}
.topbar .phone{color:#fff;font-weight:700;font-size:18px;margin-left:auto}
.nav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;box-shadow:0 2px 10px rgba(0,0,0,.04)}
.nav-in{display:flex;gap:4px;overflow-x:auto}
.nav a{padding:14px 14px;color:var(--ink);font-size:15px;white-space:nowrap;border-bottom:3px solid transparent}
.nav a:hover{color:var(--accent);text-decoration:none}
.nav a.active{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}

.pagehead{background:linear-gradient(120deg,#243447,#1d2733);color:#fff;padding:34px 0}
.pagehead h1{color:#fff}

/* контент */
main section.block{padding:26px 0}
.price-table{width:100%;border-collapse:collapse;margin:16px 0;font-size:15px}
.price-table th,.price-table td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left}
.price-table th{background:var(--bg);font-weight:600}
.price-table td:last-child,.price-table th:last-child{white-space:nowrap;font-weight:600}
.note{background:#fff6f0;border:1px solid #f3cdb6;border-radius:8px;padding:12px 16px;margin:16px 0;font-size:14px}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;margin:20px 0}
.card{border:1px solid var(--line);border-radius:10px;padding:18px;background:#fff;transition:.15s}
.card:hover{border-color:var(--accent);box-shadow:0 6px 18px rgba(0,0,0,.06)}
.card h3{margin-bottom:8px}
.card .btn{margin-top:10px}

/* подвал */
.footer{background:var(--ink);color:#c6d0da;margin-top:40px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:26px;padding:36px 16px}
.footer h4{color:#fff;margin-bottom:10px}
.footer a{display:block;color:#c6d0da;margin:5px 0}
.footer a:hover{color:var(--accent)}
.footer .phone{color:#fff;font-size:17px;font-weight:700}
.copy{border-top:1px solid #33465c;padding:14px 16px;font-size:13px;color:#8fa1b3}

/* модальное окно */
.modal{position:fixed;inset:0;background:rgba(15,23,32,.55);z-index:200;display:flex;align-items:center;justify-content:center;padding:16px}
.modal-box{background:#fff;border-radius:12px;max-width:460px;width:100%;padding:26px;position:relative;max-height:92vh;overflow:auto}
.modal-close{position:absolute;top:10px;right:12px;background:none;border:0;font-size:26px;cursor:pointer;color:var(--muted);line-height:1}
form label{display:block;margin:12px 0 4px;font-size:14px;font-weight:600}
form input,form textarea,form select{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:8px;font:inherit;font-weight:400;margin-top:4px}
form input:focus,form textarea:focus{outline:2px solid var(--accent);outline-offset:-1px}
.hp{position:absolute;left:-9999px;opacity:0;height:0}
.filelist{font-size:13px;color:var(--muted);margin:6px 0}
.form-status{margin-top:10px;font-size:14px}
.form-status.ok{color:var(--ok)} .form-status.err{color:var(--err)}

/* чат */
.chat-fab{position:fixed;right:18px;bottom:18px;z-index:150;display:flex;align-items:center;gap:8px;
  background:var(--accent);color:#fff;border:0;border-radius:30px;padding:13px 20px;font-size:15px;
  font-weight:600;cursor:pointer;box-shadow:0 8px 24px rgba(232,98,44,.4)}
.chat-fab:hover{background:var(--accent-d)}
.chat{position:fixed;right:18px;bottom:84px;z-index:150;width:340px;max-width:calc(100vw - 36px);
  background:#fff;border-radius:14px;box-shadow:0 12px 40px rgba(0,0,0,.25);display:flex;flex-direction:column;overflow:hidden;border:1px solid var(--line)}
.chat-head{background:var(--ink);color:#fff;padding:12px 16px;display:flex;justify-content:space-between;align-items:center}
.chat-head .modal-close{color:#fff;position:static}
.chat-body{height:260px;overflow-y:auto;padding:12px;background:var(--bg)}
.msg{max-width:82%;padding:8px 12px;border-radius:12px;margin:6px 0;font-size:14px;line-height:1.45;word-wrap:break-word}
.msg--client{background:#fff;border:1px solid var(--line);margin-left:auto;border-bottom-right-radius:4px}
.msg--admin{background:var(--accent);color:#fff;margin-right:auto;border-bottom-left-radius:4px}
.msg time{display:block;font-size:11px;opacity:.6;margin-top:3px}
.chat-start{padding:12px}
.chat-start input{margin-bottom:8px}
.chat-input{display:flex;gap:8px;padding:10px;border-top:1px solid var(--line)}
.chat-input textarea{flex:1;resize:none;margin:0}
.chat-input .btn{padding:10px 16px}

/* админка */
.admin-wrap{max-width:900px;margin:30px auto;padding:0 16px}
.admin-tabs{display:flex;gap:8px;margin:18px 0}
.admin-tabs a{padding:9px 18px;border-radius:8px;background:var(--bg);color:var(--ink)}
.admin-tabs a.active{background:var(--accent);color:#fff}
table.admin{width:100%;border-collapse:collapse;font-size:14px;margin:14px 0}
table.admin th,table.admin td{border-bottom:1px solid var(--line);padding:9px 10px;text-align:left;vertical-align:top}
table.admin th{background:var(--bg)}
.badge{display:inline-block;background:#eef4fb;color:#2a5b8f;border-radius:20px;padding:2px 10px;font-size:12px}
.badge--new{background:#fdeceb;color:var(--err)}
.thread{background:var(--bg);border-radius:10px;padding:14px;margin:14px 0;max-height:320px;overflow-y:auto}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--ink);color:#fff;
  padding:11px 20px;border-radius:8px;z-index:300;font-size:14px}

@media(max-width:820px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .topbar .phone{margin-left:0}
  .chat{width:calc(100vw - 36px)}
  .price-table{font-size:14px}
  .price-table th,.price-table td{padding:8px}
}
@media(max-width:520px){.footer-grid{grid-template-columns:1fr} h1{font-size:24px}}

/* фикс: атрибут hidden не должен перекрываться display */
.modal[hidden],.chat[hidden],.toast[hidden]{display:none}
.chat-attach{background:#fff;border:1px solid var(--line);border-radius:8px;font-size:18px;
  padding:0 12px;cursor:pointer;line-height:1}
.chat-attach:hover{border-color:var(--accent)}
.msg--admin a{color:#fff;text-decoration:underline}
.msg--client a{color:var(--accent)}