/* ============================================================================
   Витрина сервиса: шапка, hero, секции, подвал.
   ========================================================================= */
.site-hd{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--border)}
.site-hd .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:66px}
.site-nav{display:flex;align-items:center;gap:26px}
.site-nav a{color:var(--ink-2);font-size:14.5px;font-weight:500;text-decoration:none}
.site-nav a:hover{color:var(--primary)}
.burger{display:none;background:none;border:0;padding:8px;cursor:pointer}

/* ------------------------------------------------------------------- hero */
.hero{position:relative;overflow:hidden;padding:78px 0 70px;
  background:
    radial-gradient(1000px 480px at 78% -8%,rgba(35,84,255,.13),transparent 62%),
    radial-gradient(700px 420px at 6% 108%,rgba(14,166,120,.11),transparent 60%),
    var(--bg)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--primary-d);background:var(--primary-l);padding:6px 13px;border-radius:100px;
  border:1px solid #d3e0ff}
.hero h1{margin:18px 0 0}
.hero h1 .hl{background:linear-gradient(180deg,transparent 62%,rgba(14,166,120,.28) 62%)}
.hero-sub{font-size:17.5px;color:var(--ink-2);margin-top:20px;max-width:560px;line-height:1.6}
.hero-cta{display:flex;gap:13px;flex-wrap:wrap;margin-top:30px}
.hero-facts{display:flex;gap:30px;flex-wrap:wrap;margin-top:34px;padding-top:26px;
  border-top:1px solid var(--border)}
.hero-fact b{display:block;font-size:23px;font-weight:700;letter-spacing:-.02em}
.hero-fact span{font-size:13px;color:var(--muted)}

/* макет окна сервиса в hero */
.mock{background:var(--surface);border:1px solid var(--border);border-radius:18px;
  box-shadow:var(--shadow-l);overflow:hidden;transform:perspective(1400px) rotateY(-6deg) rotateX(2deg)}
.mock-bar{display:flex;align-items:center;gap:7px;padding:11px 14px;background:var(--surface-2);
  border-bottom:1px solid var(--border)}
.mock-bar i{width:9px;height:9px;border-radius:50%;background:#dbe3ee;display:block}
.mock-url{margin-left:8px;font-size:11.5px;color:var(--muted);font-family:var(--mono)}
.mock-bd{padding:18px}
.mock-kpi{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px}
.mock-kpi div{background:var(--surface-2);border:1px solid var(--border);border-radius:10px;padding:11px 13px}
.mock-kpi span{font-size:10.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;font-weight:600}
.mock-kpi b{display:block;font-size:17px;margin-top:3px;letter-spacing:-.02em}

/* --------------------------------------------------------------- секции */
.section{padding:74px 0}
.section-alt{background:var(--surface)}
.section-dark{background:var(--ink);color:#fff}
.section-dark h2{color:#fff}
.section-dark .muted{color:#94a9c6}
.sec-head{max-width:660px;margin-bottom:42px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head p{margin-top:14px;font-size:16.5px;color:var(--muted);line-height:1.6}
.kicker{font-size:12.5px;font-weight:700;text-transform:uppercase;letter-spacing:.09em;
  color:var(--primary);margin-bottom:12px}

.feature{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;transition:.18s}
.feature:hover{box-shadow:var(--shadow);transform:translateY(-2px);border-color:#d5e0ef}
.feature .ic{width:42px;height:42px;border-radius:12px;background:var(--primary-l);
  color:var(--primary);display:grid;place-items:center;margin-bottom:16px}
.feature.g .ic{background:var(--accent-l);color:var(--accent)}
.feature.w .ic{background:var(--warn-l);color:var(--warn)}
.feature h3{font-size:17px;margin-bottom:9px}
.feature p{color:var(--muted);font-size:14.5px;line-height:1.6}

/* шаги */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative}
.step{position:relative;padding-top:14px}
.step::before{counter-increment:s;content:counter(s);display:grid;place-items:center;
  width:38px;height:38px;border-radius:12px;background:var(--primary);color:#fff;
  font-weight:800;font-size:16px;margin-bottom:16px;box-shadow:0 4px 12px rgba(35,84,255,.3)}
.step h3{font-size:17px;margin-bottom:9px}
.step p{color:var(--muted);font-size:14.5px;line-height:1.6}
.section-dark .step p{color:#a9bcd6}
.section-dark .feature{background:#152743;border-color:#24395c}
.section-dark .feature p{color:#a9bcd6}
.section-dark .feature .ic{background:#1e3358}

/* FAQ */
.faq details{border:1px solid var(--border);border-radius:var(--radius-s);background:var(--surface);
  padding:0;margin-bottom:11px;overflow:hidden}
.faq summary{padding:17px 20px;font-weight:600;cursor:pointer;list-style:none;display:flex;
  justify-content:space-between;gap:16px;align-items:center;font-size:15.5px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:21px;color:var(--muted);font-weight:400;flex:none}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 20px 18px;color:var(--muted);font-size:14.5px;line-height:1.65}

/* CTA-полоса */
.cta{background:linear-gradient(135deg,var(--ink) 0%,#1c3660 100%);border-radius:var(--radius-l);
  padding:52px;color:#fff;display:flex;align-items:center;justify-content:space-between;
  gap:34px;flex-wrap:wrap;box-shadow:var(--shadow-l)}
.cta h2{color:#fff;max-width:600px}
.cta p{color:#a9bcd6;margin-top:12px;max-width:560px}

/* подвал */
.site-ft{background:var(--ink);color:#8fa4c1;padding:52px 0 30px;font-size:14px}
.site-ft a{color:#c3d3e8}
.ft-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;margin-bottom:34px}
.ft-grid h4{color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.07em;margin-bottom:14px}
.ft-grid ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
.ft-bottom{border-top:1px solid #24395c;padding-top:22px;display:flex;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:13px}

/* демо-блок */
.demo-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-l);
  box-shadow:var(--shadow);overflow:hidden}
.demo-hd{padding:20px 26px;border-bottom:1px solid var(--border);display:flex;
  justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;background:var(--surface-2)}
.demo-bd{padding:26px}

@media (max-width:960px){
  .hero-grid,.grid-2{grid-template-columns:1fr}
  .grid-3,.steps{grid-template-columns:1fr}
  .grid-4{grid-template-columns:1fr 1fr}
  .ft-grid{grid-template-columns:1fr 1fr}
  .mock{transform:none}
  .site-nav{display:none}
  .site-nav.open{display:flex;position:absolute;top:66px;left:0;right:0;background:var(--surface);
    flex-direction:column;align-items:flex-start;padding:18px 22px;gap:14px;
    border-bottom:1px solid var(--border);box-shadow:var(--shadow)}
  .burger{display:block}
  .cta{padding:34px;flex-direction:column;align-items:flex-start}
  .section{padding:52px 0}
  .hero{padding:48px 0 52px}
}
@media (max-width:560px){
  .grid-4,.field-row{grid-template-columns:1fr}
  .ft-grid{grid-template-columns:1fr}
}