/* B2B Family. Бренд с Тильды: PT Sans, акцент #ee704c, текст #313541, фон секций #f7f8ff.
   Светлая тема, контентная колонка 1180px. */
:root{
  --accent:#ee704c;
  --accent-deep:#d65a37;  /* наведение и текст-ссылки: контраст с белым выше */
  --accent-soft:#fdeee8;
  --ink:#313541;
  --muted:#646a7d;
  --paper:#ffffff;
  --soft:#f7f8ff;
  --line:#e6e8f2;
  --violet:#8040a8;       /* бейдж «Специальный тариф» */
  --f:"PT Sans",Arial,sans-serif;
  --r:16px;
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.55 var(--f);-webkit-font-smoothing:antialiased}
a{color:var(--accent-deep);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
h1,h2,h3{margin:0;font-weight:700;line-height:1.15;text-wrap:balance}
h1{font-size:clamp(32px,4.6vw,54px)}
h2{font-size:clamp(26px,3.2vw,38px)}
h3{font-size:20px;line-height:1.25}
p{margin:0}
.wrap{max-width:1180px;margin:0 auto;padding-inline:max(16px,env(safe-area-inset-left,0px))}
.band{padding-block:clamp(44px,6vw,84px)}
.band.soft{background:var(--soft)}
.top-band{padding-bottom:28px;background:linear-gradient(var(--soft),var(--paper))}
.center{text-align:center}
.stack{display:flex;flex-direction:column;gap:16px}
.center.stack{align-items:center}
.lead{font-size:19px;color:var(--muted);max-width:62ch}
.center .lead{margin-inline:auto}
.muted{color:var(--muted)}
.accent{color:var(--accent)}
.actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.center.actions,.center .actions{justify-content:center;margin-top:28px}
.center.stack .actions{margin-top:4px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:700 16px/1 var(--f);padding:15px 24px;border-radius:999px;border:2px solid transparent;cursor:pointer;text-decoration:none!important;transition:transform .15s,background .15s}
.btn.accent{background:var(--accent);color:#fff}
.btn.accent:hover{background:var(--accent-deep);transform:translateY(-1px)}
.btn.line{border-color:var(--accent);color:var(--accent-deep);background:#fff}
.btn.line:hover{background:var(--accent-soft)}
.tag{display:inline-block;font:700 12px/1 var(--f);padding:6px 9px;border-radius:999px;background:var(--accent-soft);color:var(--accent-deep);white-space:nowrap}
.tile{display:inline-grid;place-items:center;width:48px;height:48px;border-radius:14px;background:var(--accent-soft);color:var(--accent);flex:none}
.tile svg{width:24px;height:24px}

/* шапка */
header.site{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
header.site>.wrap{display:flex;align-items:center;gap:24px;height:72px}
.logo{display:flex;align-items:center}
.logo img{display:block;width:161px;height:25px}
nav.main{display:flex;gap:4px;flex:1;justify-content:center}
nav.main a{color:var(--ink);font-size:16px;padding:10px 12px;border-radius:999px}
nav.main a:hover{background:var(--soft);text-decoration:none}
nav.main a.on{color:var(--accent-deep);font-weight:700}
.hdr-cta{display:flex;gap:8px}
.hdr-cta .btn{padding:11px 18px;font-size:14px}
.mmenu{display:none;margin-left:auto}
.burger{list-style:none;cursor:pointer;font-size:26px;padding:6px 10px}
.burger::-webkit-details-marker{display:none}
.mnav{position:absolute;left:0;right:0;top:72px;background:#fff;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:6px;padding:16px}
.mnav a:not(.btn){color:var(--ink);padding:10px 4px;font-size:18px}
@media (max-width:1060px){nav.main,.hdr-cta{display:none}.mmenu{display:block}}

.crumbs{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;font-size:14px;color:var(--muted)}
.crumbs.left{justify-content:flex-start}
.crumbs a{color:var(--muted)}
.sec-head{margin-bottom:36px}
.sec-head .lead{margin-top:12px}

/* сетки и карточки */
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
@media (max-width:900px){.g3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.g2,.g3{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;display:flex;flex-direction:column;gap:12px;position:relative}
.soft .card{border-color:transparent;box-shadow:0 4px 18px rgba(49,53,65,.06)}
a.card{color:var(--ink);transition:transform .15s,box-shadow .15s}
a.card:hover{text-decoration:none;transform:translateY(-2px);box-shadow:0 10px 28px rgba(49,53,65,.1)}
.card p{color:var(--muted)}
.fcard .more{margin-top:auto;color:var(--accent-deep);font-weight:700}
.stretch::after{content:"";position:absolute;inset:0}

/* главная */
.hero{padding-block:clamp(36px,5vw,72px);background:linear-gradient(180deg,var(--soft),#fff)}
.hero-in{display:grid;grid-template-columns:1fr 1.05fr;gap:40px;align-items:center}
.hero-art{position:relative}
.hero-art>img{display:block;width:100%}
.insight{position:absolute;display:flex;gap:10px;align-items:center;max-width:300px;background:#fff;border-radius:14px;padding:12px 14px;font-size:14px;line-height:1.35;box-shadow:0 10px 30px rgba(49,53,65,.14)}
.insight .tile{width:36px;height:36px;border-radius:10px}
.insight .tile svg{width:18px;height:18px}
.insight.i1{left:-12px;bottom:-18px}
.insight.i2{right:0;top:-10px}
@media (max-width:900px){.hero-in{grid-template-columns:1fr}.insight{position:static;margin-top:10px;max-width:none}}
.stats{margin-bottom:28px}
.stat{text-align:center;padding:8px}
.stat b{display:block;font-size:clamp(34px,4vw,48px);color:var(--accent);line-height:1.1}
.stat p{color:var(--muted);margin-top:6px}
.research{flex-direction:row;align-items:center;justify-content:space-between;gap:24px;background:var(--soft);border:0}
.research p{color:var(--ink)}
@media (max-width:760px){.research,.video{flex-direction:column;align-items:flex-start}}
.frows{display:flex;flex-direction:column;gap:clamp(36px,5vw,64px)}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,56px);align-items:center}
.frow.flip .frow-art{order:2}
.frow-art{display:flex;justify-content:center}
.frow-art img{max-height:360px;width:auto}
.frow p{color:var(--muted);font-size:18px}
@media (max-width:760px){.frow{grid-template-columns:1fr}.frow.flip .frow-art{order:0}}
.video{flex-direction:row;align-items:center;gap:32px;background:var(--ink);border:0;color:#fff}
.video p{color:#d7d9e2}
.video-art{flex:0 0 min(46%,520px);border-radius:12px;overflow:hidden}
.video-art img{display:block;width:100%}
.scenario img{width:56px;height:56px;object-fit:contain}
.review blockquote{margin:0}
.review blockquote p{color:var(--ink);font-size:16px}
.review figcaption{display:flex;flex-direction:column;margin-top:auto}

/* тарифы */
.seg{display:inline-flex;gap:4px;padding:4px;border-radius:999px;background:var(--soft);margin:0 auto 28px}
.pricing{display:flex;flex-direction:column}
.seg button{font:700 15px/1 var(--f);border:0;background:none;color:var(--ink);padding:12px 18px;border-radius:999px;cursor:pointer}
.seg button.on{background:var(--accent);color:#fff}
.plans{align-items:start}
.plan-name{font-size:24px;font-weight:700}
.price b{font-size:40px;color:var(--accent)}
.price span{color:var(--muted)}
.plan.special{border:2px solid var(--violet)}
.badge{align-self:flex-start;background:var(--violet);color:#fff;font-size:13px;font-weight:700;padding:6px 12px;border-radius:50px}
.range{display:flex;flex-direction:column;gap:8px}
.range input{accent-color:var(--accent);width:100%}
.total{display:flex;justify-content:space-between;align-items:baseline;border-top:1px solid var(--line);padding-top:14px}
.total b{font-size:28px}
.tiers{width:100%;border-collapse:collapse;font-size:15px}
.tiers th{text-align:left;color:var(--muted);font-weight:400;padding:6px 4px;border-bottom:1px solid var(--line)}
.tiers td{padding:9px 4px;border-bottom:1px solid var(--line)}
.tiers td:last-child,.tiers th:last-child{text-align:right}

/* интеграции */
.cat-head{margin-bottom:24px}
.icard ul{margin:0;padding-left:20px;color:var(--muted)}
.icard .links{display:flex;gap:18px;flex-wrap:wrap;margin-top:auto;font-weight:700}

/* статьи и документы */
.prose{max-width:780px;margin:0 auto}
.prose h2{margin:36px 0 14px;font-size:28px}
.prose h3{margin:26px 0 10px}
.prose p,.prose li{margin:0 0 12px}
.prose img{display:block;margin:16px 0;border-radius:10px;border:1px solid var(--line)}
.prose table{border-collapse:collapse;width:100%;margin:16px 0}
.prose td,.prose th{border:1px solid var(--line);padding:8px}
.prose pre{background:var(--soft);padding:14px;border-radius:10px;overflow:auto}
.prose blockquote{margin:16px 0;padding:4px 18px;border-left:4px solid var(--accent);background:var(--soft)}
.fsec h2{margin-top:0}
.fsec+.fsec{margin-top:36px}
.article-band{padding-top:36px}
.prose h1{margin:16px 0 14px}
.article-meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:24px}
.legal-doc{font-size:16px}
.reqs{display:grid;gap:10px;margin:0 0 20px}
.reqs div{display:grid;grid-template-columns:150px 1fr;gap:12px}
.reqs dt{color:var(--muted)}
.reqs dd{margin:0}

/* каталог статей */
.int-search{max-width:560px;margin:0 auto 18px}
.int-search input{width:100%;font:17px var(--f);padding:14px 18px;border-radius:999px;border:1px solid var(--line);background:#fff}
.chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:32px}
.chips button{font:15px var(--f);border:1px solid var(--line);background:#fff;color:var(--ink);padding:9px 14px;border-radius:999px;cursor:pointer}
.chips button.on{background:var(--accent);border-color:var(--accent);color:#fff}
.empty{text-align:center;color:var(--muted);padding:32px}
.help-index{display:grid;grid-template-columns:repeat(2,1fr);gap:28px 40px}
@media (max-width:760px){.help-index{grid-template-columns:1fr}}
.help-group h2{font-size:22px;margin-bottom:12px}
.help-group ul{margin:0;padding-left:20px}
.help-group li{margin:6px 0}
.feed{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media (max-width:760px){.feed{grid-template-columns:1fr}}
.feed-item h2{font-size:22px}
.feed-item h2 a{color:var(--ink)}
.feed-item .meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;color:var(--muted);font-size:14px}

/* призыв и подвал */
.cta-band{background:var(--ink);color:#fff}
.cta-band .lead{color:#d7d9e2}
footer{background:var(--soft);padding:48px 0 32px;font-size:15px}
.f-grid{display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:28px}
@media (max-width:860px){.f-grid{grid-template-columns:1fr 1fr}}
.f-grid b{display:block;margin-bottom:10px}
.f-grid ul{list-style:none;margin:0;padding:0}
.f-grid li{margin:6px 0}
.f-grid a{color:var(--ink)}
.f-brand p{margin-top:16px}
.f-brand b{margin-bottom:4px}
.legal{margin-top:32px;padding-top:20px;border-top:1px solid var(--line);color:var(--muted);font-size:13px;display:flex;flex-direction:column;gap:6px}

/* 404 */
.nf{padding-block:24px}
.nf-code{font-size:clamp(96px,16vw,180px);line-height:1;color:var(--accent)}
.nf .actions{justify-content:center}

/* Формы: «Хочу демонстрацию» (окно) и подписка на инсайты (islands/demo_form.dart, subscribe_form.dart). */
.demo-form{display:contents}
.modal{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:16px;background:rgba(49,53,65,.55);text-align:left}
.modal-card{width:min(480px,100%);max-height:calc(100vh - 32px);overflow:auto}
.modal-close{position:absolute;top:10px;right:14px;border:0;background:none;font:400 30px/1 var(--f);color:var(--muted);cursor:pointer}
.site-form{display:flex;flex-direction:column;gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-weight:700;font-size:15px}
.field input{font:17px var(--f);padding:12px 16px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink)}
.field input:focus{outline:2px solid var(--accent);outline-offset:1px}
.field input[aria-invalid=true]{border-color:#c0392b}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--muted)}
.consent input{margin-top:4px;flex:none;width:18px;height:18px;accent-color:var(--accent)}
.site-form .btn{align-self:flex-start}
.form-msg{font-size:16px}
.form-msg.error{color:#b03a2e}
.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
.captcha:empty{display:none}
.subscribe{max-width:640px;margin-inline:auto}
.field-error{font-size:14px;color:#b03a2e}
.form-msg.empty{display:none}
.form-msg:focus{outline:none}
.btn:disabled{opacity:.6;cursor:default;transform:none}