/* ==================== Базовые переменные ==================== */
:root{
  --ink:#141b22;
  --ink-2:#33414d;
  --muted:#6a7784;
  --line:#e6e9ec;
  --bg:#ffffff;
  --bg-alt:#f4f6f8;
  --steel:#1f2c38;
  --steel-2:#2c3d4c;
  --accent:#e8622a;
  --accent-2:#ff7a3d;
  --accent-ink:#c24d1c;
  --ok:#1f9d55;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 10px 40px -12px rgba(20,27,34,.28);
  --shadow-sm:0 4px 20px -8px rgba(20,27,34,.25);
  --font:'Segoe UI',system-ui,-apple-system,'Roboto',Arial,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.15;font-weight:800;letter-spacing:-.02em}

.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
.container--narrow{max-width:820px}

/* ==================== Кнопки ==================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:inherit;font-weight:700;font-size:15px;cursor:pointer;
  border:none;border-radius:var(--radius-sm);padding:12px 22px;
  transition:transform .15s ease, box-shadow .2s ease, background .2s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-lg{padding:15px 28px;font-size:16px}
.btn-block{width:100%}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;box-shadow:0 8px 22px -8px rgba(232,98,42,.7);
}
.btn-primary:hover{box-shadow:0 12px 28px -8px rgba(232,98,42,.85);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.5)}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-light{background:#fff;color:var(--steel)}
.btn-light:hover{transform:translateY(-1px)}

/* ==================== Шапка ==================== */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.9);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:28px;height:72px}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:20px;letter-spacing:-.02em;color:var(--steel)}
.logo-mark{color:var(--accent);display:flex}
.logo-text b{color:var(--accent)}
.main-nav{display:flex;gap:26px;margin-left:12px}
.main-nav a{font-weight:600;color:var(--ink-2);font-size:15px;transition:color .2s}
.main-nav a:hover{color:var(--accent)}
.header-cta{margin-left:auto;padding:10px 20px;font-size:14px}

/* ==================== Hero ==================== */
.hero{position:relative;overflow:hidden;color:#fff;padding:56px 0 64px}
.hero-bg{
  position:absolute;inset:0;z-index:0;
  background:
    linear-gradient(180deg,rgba(20,27,34,.82),rgba(20,27,34,.92)),
    repeating-linear-gradient(90deg,#26333f 0 3px,transparent 3px 46px),
    linear-gradient(135deg,#1f2c38,#26333f);
}
.hero-bg::after{
  content:"";position:absolute;right:-10%;top:-20%;width:60%;height:140%;
  background:radial-gradient(closest-side,rgba(232,98,42,.35),transparent);
  filter:blur(10px);
}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero-badge{
  display:inline-block;background:rgba(232,98,42,.16);color:#ffb790;
  border:1px solid rgba(232,98,42,.4);border-radius:100px;
  padding:6px 14px;font-size:13px;font-weight:600;margin-bottom:20px;
}
.hero h1{font-size:clamp(30px,4.4vw,52px);margin-bottom:18px}
.hero-sub{font-size:18px;color:#c5cfd8;max-width:560px;margin-bottom:22px}
.hero-features{list-style:none;display:flex;flex-wrap:wrap;gap:10px 22px;margin-bottom:30px}
.hero-features li{font-weight:600;color:#eaf0f5}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}

/* Форма в hero */
.hero-form-card{
  background:#fff;color:var(--ink);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow);
}
.form-title{font-size:23px;color:var(--steel)}
.form-sub{color:var(--muted);font-size:14px;margin:6px 0 18px}
.lead-form{display:flex;flex-direction:column;gap:12px}
.hp-field{position:absolute!important;left:-9999px!important;width:1px;height:1px;opacity:0;pointer-events:none}
.field{position:relative}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:15px;color:var(--ink);
  background:var(--bg-alt);border:1.5px solid var(--line);border-radius:var(--radius-sm);
  padding:13px 15px;transition:border-color .2s, background .2s;resize:vertical;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);background:#fff;
}
.field input.invalid{border-color:#e23b3b;background:#fff5f5}
.field-error{display:block;color:#e23b3b;font-size:12px;margin-top:4px;min-height:0}
.btn-spinner{
  width:18px;height:18px;border:2.5px solid rgba(255,255,255,.4);
  border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.form-privacy{font-size:11.5px;color:var(--muted);text-align:center;line-height:1.4}
.form-success{
  display:flex;align-items:center;gap:12px;background:#eefaf1;color:#146c37;
  border:1px solid #bfe8cc;border-radius:var(--radius-sm);padding:14px;font-size:14px;
}
.form-success-icon{
  flex:none;width:34px;height:34px;border-radius:50%;background:var(--ok);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;
}

/* ==================== Trust bar ==================== */
.trust{background:var(--steel-2);color:#fff}
.trust-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:24px 20px}
.trust-item{text-align:center}
.trust-item b{display:block;font-size:26px;color:#fff}
.trust-item span{font-size:13px;color:#9fb0bd}

/* ==================== Секции ==================== */
.section{padding:74px 0}
.section--alt{background:var(--bg-alt)}
.section-head{text-align:center;max-width:680px;margin:0 auto 46px}
.section-head h2{font-size:clamp(26px,3.4vw,38px);color:var(--steel);margin-bottom:12px}
.section-head p{color:var(--muted);font-size:17px}

/* ==================== Каталог ==================== */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .2s ease, box-shadow .2s ease;display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card-media{position:relative;height:160px;background-size:cover;background-position:center}
.card-media--20{background:linear-gradient(135deg,#2f5d8a,#3f7bb0)}
.card-media--40{background:linear-gradient(135deg,#8a3f2f,#b0623f)}
.card-media--ref{background:linear-gradient(135deg,#2f7d8a,#3fb0a8)}
.card-media::after{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(90deg,rgba(0,0,0,.14) 0 2px,transparent 2px 30px);
}
.card-tag{
  position:absolute;top:12px;left:12px;z-index:1;
  background:rgba(20,27,34,.85);color:#fff;font-size:12px;font-weight:700;
  padding:5px 12px;border-radius:100px;
}
.card-body{padding:22px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:21px;color:var(--steel);margin-bottom:8px}
.card-desc{color:var(--muted);font-size:14.5px;margin-bottom:14px}
.card-specs{list-style:none;margin-bottom:18px;display:flex;flex-direction:column;gap:7px}
.card-specs li{position:relative;padding-left:22px;font-size:14px;color:var(--ink-2)}
.card-specs li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:800}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:8px;border-top:1px solid var(--line)}
.price{font-size:24px;font-weight:800;color:var(--steel)}
.price-from{font-size:13px;font-weight:600;color:var(--muted)}
.price-per{font-size:14px;font-weight:600;color:var(--muted)}
.catalog-note{text-align:center;margin-top:34px;color:var(--muted)}
.catalog-note a{color:var(--accent);font-weight:600}

/* ==================== Применение ==================== */
.uses{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.use{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;text-align:center}
.use-ic{font-size:38px;margin-bottom:12px}
.use h3{font-size:18px;color:var(--steel);margin-bottom:8px}
.use p{font-size:14px;color:var(--muted)}

/* ==================== Почему мы ==================== */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.why-item{padding:26px;border-radius:var(--radius);background:var(--bg-alt);border:1px solid var(--line)}
.why-num{display:inline-block;font-size:14px;font-weight:800;color:var(--accent);letter-spacing:.1em;margin-bottom:10px}
.why-item h3{font-size:19px;color:var(--steel);margin-bottom:8px}
.why-item p{font-size:14.5px;color:var(--muted)}

/* ==================== Шаги ==================== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 22px 24px}
.step-num{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;font-weight:800;font-size:20px;margin-bottom:14px;
}
.step h3{font-size:18px;color:var(--steel);margin-bottom:7px}
.step p{font-size:14px;color:var(--muted)}

/* ==================== CTA-полоса ==================== */
.cta-band{background:linear-gradient(135deg,var(--steel),var(--steel-2));color:#fff;padding:52px 0}
.cta-band-inner{display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(23px,3vw,32px);margin-bottom:8px}
.cta-band p{color:#b9c5cf;max-width:520px}
.cta-band-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ==================== FAQ ==================== */
.faq{display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden}
.faq-item summary{
  cursor:pointer;list-style:none;padding:18px 22px;font-weight:700;color:var(--steel);
  font-size:16px;display:flex;justify-content:space-between;align-items:center;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:24px;color:var(--accent);font-weight:400;transition:transform .2s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-a{padding:0 22px 20px;color:var(--muted);font-size:15px}

/* ==================== Финальная форма ==================== */
.final-inner{display:grid;grid-template-columns:1fr 460px;gap:48px;align-items:center}
.final-text h2{font-size:clamp(26px,3.2vw,36px);color:var(--steel);margin-bottom:14px}
.final-text>p{color:var(--muted);font-size:17px;margin-bottom:26px}
.final-contacts{list-style:none;display:flex;flex-direction:column;gap:14px}
.final-contacts li{display:flex;align-items:center;gap:12px;font-size:17px;color:var(--ink-2);font-weight:600}
.final-contacts a{color:var(--steel)}
.final-contacts a:hover{color:var(--accent)}

/* ==================== Карта ==================== */
.map-section{padding:64px 0 0}
.map-embed{line-height:0;border-top:1px solid var(--line)}
.map-embed iframe{display:block;width:100%;height:440px;border:0}

/* ==================== Подвал ==================== */
.site-footer{background:var(--steel);color:#c5cfd8}
.footer-inner{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding:52px 20px 40px}
.logo--footer{color:#fff;margin-bottom:14px}
.footer-about{font-size:14px;color:#93a3af;max-width:320px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;text-transform:uppercase;letter-spacing:.05em}
.footer-col a,.footer-col span{display:block;color:#a7b5c0;font-size:14.5px;margin-bottom:10px;transition:color .2s}
.footer-col a:hover{color:var(--accent-2)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;font-size:13px;color:#7e8f9c;text-align:center}

/* ==================== Плавающая кнопка звонка ==================== */
.fab-call{
  position:fixed;right:18px;bottom:18px;z-index:60;display:none;
  width:56px;height:56px;border-radius:50%;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;
  align-items:center;justify-content:center;box-shadow:0 10px 26px -6px rgba(232,98,42,.75);
  animation:pulse 2s infinite;
}
@keyframes pulse{0%{box-shadow:0 10px 26px -6px rgba(232,98,42,.75),0 0 0 0 rgba(232,98,42,.5)}70%{box-shadow:0 10px 26px -6px rgba(232,98,42,.75),0 0 0 14px rgba(232,98,42,0)}100%{box-shadow:0 10px 26px -6px rgba(232,98,42,.75),0 0 0 0 rgba(232,98,42,0)}}

/* ==================== Адаптив ==================== */
@media(max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .cards,.why-grid,.uses,.steps{grid-template-columns:repeat(2,1fr)}
  .final-inner{grid-template-columns:1fr;gap:30px}
  .main-nav{display:none}
}
@media(max-width:640px){
  .header-inner{height:62px}
  .header-cta{margin-left:auto;padding:9px 16px;font-size:13px}
  .logo{font-size:18px}
  .hero{padding:36px 0 44px}
  .section{padding:52px 0}
  .cards,.why-grid,.uses,.steps,.trust-inner{grid-template-columns:1fr}
  .trust-inner{gap:18px}
  .footer-inner{grid-template-columns:1fr;gap:28px}
  .cta-band-inner{flex-direction:column;text-align:center}
  .cta-band-actions{width:100%;justify-content:center}
  .fab-call{display:flex}
  .hero-cta .btn{flex:1}
}