:root {
  --bg: #0a0a0b; --bg-2: #101113; --bg-3: #15171a; --line: #23262b; --text: #f2f3f5; --muted: #9aa0a8;
  --accent: #3fd8f0; --accent-ink: #04222a; --radius: 16px;
  --font: "Helvetica Neue", "Avenir Next", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--font); font-size: 17px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; }
a { color: inherit; text-decoration-color: rgba(255,255,255,.3); text-underline-offset: 3px; }
a:hover { color: var(--accent); }
.wrap { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 24px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: var(--accent-ink); padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.muted { color: var(--muted); } .small { font-size: 14px; }

h1, h2, h3 { font-weight: 300; line-height: 1.12; margin: 0; letter-spacing: -.01em; }
h1 { font-size: clamp(36px, 6vw, 68px); }
h1 span { color: var(--accent); }
h2 { font-size: clamp(28px, 3.6vw, 44px); margin-bottom: 28px; }
h3 { font-size: 22px; font-weight: 400; margin-bottom: 10px; }
.eyebrow { text-transform: uppercase; letter-spacing: .22em; font-size: 12.5px; color: var(--accent); margin: 0 0 18px; font-weight: 500; }

/* кнопки */
.btn { display: inline-block; font: inherit; font-weight: 500; font-size: 16px; padding: 14px 26px; border-radius: 999px; background: var(--accent); color: var(--accent-ink); border: 1px solid var(--accent); text-decoration: none; cursor: pointer; transition: .15s; letter-spacing: .01em; }
.btn:hover { background: #fff; border-color: #fff; color: #000; }
.btn-ghost { background: transparent; color: var(--text); border-color: #3a3e45; }
.btn-ghost:hover { background: transparent; border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 8px 18px; font-size: 14.5px; }

/* шапка */
.hdr { position: sticky; top: 0; z-index: 30; background: rgba(10,10,11,.86); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.hdr-in { display: flex; align-items: center; gap: 28px; height: 76px; }
.logo img { display: block; width: 150px; height: auto; }
.nav { display: flex; gap: 6px; align-items: center; margin-left: auto; }
.nav a { text-decoration: none; padding: 8px 12px; border-radius: 8px; color: #cfd2d7; font-size: 15.5px; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--accent); }
.nav a.btn { color: var(--accent-ink); margin-left: 8px; } .nav a.btn:hover { color: #000; }
.hdr-tel { text-decoration: none; font-weight: 500; white-space: nowrap; letter-spacing: .01em; }
.burger { display: none; margin-left: auto; width: 44px; height: 44px; background: transparent; border: 1px solid var(--line); border-radius: 10px; cursor: pointer; padding: 11px 10px; }
.burger span { display: block; height: 1.5px; background: #fff; margin: 5px 0; }

/* hero */
.hero { position: relative; overflow: hidden; padding: 90px 0 80px; background: radial-gradient(900px 500px at 85% 20%, rgba(63,216,240,.10), transparent 60%); }
.hero-in { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: center; }
.hero-lead { color: #c6cad0; font-size: 20px; max-width: 640px; margin: 26px 0 34px; font-weight: 300; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-art { display: grid; place-items: center; }
.hero-art img { width: min(100%, 360px); opacity: .9; filter: drop-shadow(0 0 40px rgba(63,216,240,.25)); animation: float 7s ease-in-out infinite; }
@keyframes float { 50% { transform: translateY(-10px); } }
@media (prefers-reduced-motion: reduce) { .hero-art img { animation: none; } html { scroll-behavior: auto; } }
.page-hero { padding: 80px 0 40px; background: radial-gradient(800px 380px at 80% 0, rgba(63,216,240,.08), transparent 60%); }
.page-hero h1 { max-width: 900px; font-size: clamp(34px, 5vw, 56px); }
.page-hero .hero-lead { margin-bottom: 28px; }

/* блоки */
.strip { border-block: 1px solid var(--line); background: var(--bg-2); }
.strip-in { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; padding: 30px 24px; max-width: 1160px; margin: 0 auto; }
.strip-in.solo { grid-template-columns: repeat(3, 1fr); padding: 0; }
.strip-in b { display: block; font-size: 26px; font-weight: 300; color: #fff; } .strip-in span { color: var(--muted); font-size: 15px; }
.section { padding: 90px 0; } .section.alt { background: var(--bg-2); border-block: 1px solid var(--line); }
.cards3, .cards4 { display: grid; gap: 18px; grid-template-columns: repeat(3, 1fr); }
.cards4 { grid-template-columns: repeat(4, 1fr); }
.card { display: block; text-decoration: none; background: var(--bg-3); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; transition: .2s; position: relative; }
a.card:hover { border-color: var(--accent); transform: translateY(-3px); color: var(--text); }
.card p { color: #b8bdc4; margin: 0; font-size: 16.5px; font-weight: 300; }
.card-n { position: absolute; right: 24px; top: 20px; color: #3a3e45; font-size: 14px; letter-spacing: .1em; }
.more { display: inline-block; margin-top: 18px; color: var(--accent); font-size: 15px; }
.steps { list-style: none; counter-reset: s; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding: 0; margin: 0; }
.steps li { counter-increment: s; border-top: 1px solid var(--line); padding-top: 18px; }
.steps li::before { content: "0" counter(s); color: var(--accent); font-size: 14px; letter-spacing: .12em; }
.steps b { display: block; font-size: 21px; font-weight: 400; margin: 8px 0; } .steps p { margin: 0; color: #b0b5bc; font-size: 16px; font-weight: 300; }
.tags { list-style: none; padding: 0; margin: 0 0 20px; display: flex; flex-wrap: wrap; gap: 10px; }
.tags li { border: 1px solid #30343a; border-radius: 999px; padding: 9px 18px; font-size: 15.5px; color: #d6d9de; }
.note { color: var(--muted); font-size: 15px; margin-top: 22px; }
.why { display: grid; grid-template-columns: 1fr 2fr; gap: 50px; align-items: start; }
.why-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px 34px; }
.why-grid p { color: #b0b5bc; margin: 0; font-weight: 300; }
.list { padding-left: 20px; margin: 10px 0 0; color: #c1c5cb; font-weight: 300; font-size: 16.5px; } .list li { margin: 6px 0; } .list b { color: #fff; font-weight: 500; }
.list.big { font-size: 18px; list-style: none; padding: 0; } .list.big li { padding: 12px 0; border-bottom: 1px solid var(--line); }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; } .two p { color: #c1c5cb; font-weight: 300; }
.narrow { max-width: 820px; }
.placeholder { border: 1px dashed #3a3e45; border-radius: var(--radius); padding: 28px; margin: 34px 0 26px; background: rgba(255,255,255,.015); }
.placeholder b { font-size: 20px; font-weight: 400; } .placeholder p { margin: 8px 0 0; color: var(--muted); }
.price-tabs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 26px; }
table.price { width: 100%; border-collapse: collapse; } .price td { padding: 11px 0; border-bottom: 1px solid var(--line); color: #c1c5cb; } .price td:last-child { text-align: right; color: var(--muted); }
.faq { border-bottom: 1px solid var(--line); padding: 4px 0; } .faq summary { cursor: pointer; padding: 18px 0; font-size: 19px; font-weight: 300; list-style: none; display: flex; justify-content: space-between; }
.faq summary::after { content: "+"; color: var(--accent); font-size: 24px; line-height: 1; } .faq[open] summary::after { content: "–"; }
.faq summary::-webkit-details-marker { display: none; } .faq p { color: #b8bdc4; margin: 0 0 18px; font-weight: 300; }
.contact-list h3 { margin-top: 24px; color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: .16em; font-weight: 500; } .contact-list h3:first-child { margin-top: 0; }
.contact-list p { font-size: 20px; margin: 6px 0; } .big-tel { font-size: 26px; text-decoration: none; font-weight: 300; }
.map-card { background: var(--bg-3); border: 1px solid var(--line); border-radius: var(--radius); padding: 40px; display: grid; place-items: center; text-align: center; gap: 14px; min-height: 280px; }
.map-card img { opacity: .5; } .map-card p { margin: 0; color: #c1c5cb; }

/* формы */
.lead { background: linear-gradient(180deg, var(--bg-2), #0d1214); border-top: 1px solid var(--line); }
.lead-in { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.lead-p { color: #b8bdc4; font-weight: 300; } .lead-tel { color: var(--muted); font-size: 16px; }
.form { display: grid; gap: 14px; }
.form label { display: grid; gap: 6px; font-size: 14px; color: var(--muted); }
.form input, .form textarea { font: inherit; font-size: 16px; color: var(--text); background: #0c0d0f; border: 1px solid #2c3036; border-radius: 12px; padding: 13px 14px; width: 100%; }
.form input:focus, .form textarea:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px rgba(63,216,240,.18); }
.form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form .btn { justify-self: start; }
.form-msg { margin: 0; min-height: 1.4em; font-size: 15px; } .form-msg.ok, .ok { color: var(--accent); } .form-msg.err, .err { color: #ff7a7a; }
.status-result { margin-top: 22px; } .status-box { border: 1px solid var(--line); background: var(--bg-3); border-radius: var(--radius); padding: 22px 24px; }
.status-box .st { display: inline-block; font-size: 22px; color: var(--accent); margin: 6px 0; }

/* подвал */
.ftr { background: #070708; border-top: 1px solid var(--line); padding-top: 56px; }
.ftr-in { display: grid; grid-template-columns: 1.2fr 1.2fr 1fr 1fr; gap: 30px; padding-bottom: 36px; }
.ftr h4 { margin: 0 0 12px; font-weight: 500; font-size: 13px; text-transform: uppercase; letter-spacing: .16em; color: var(--muted); }
.ftr p { margin: 0 0 10px; color: #c9ccd1; font-size: 16px; } .ftr a { text-decoration: none; }
.ftr-bottom { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; padding-block: 20px; border-top: 1px solid var(--line); color: #6e747c; font-size: 13.5px; }

@media (max-width: 980px) {
  .hdr-tel { display: none; }
  .burger { display: block; }
  .nav { display: none; position: absolute; top: 76px; left: 0; right: 0; flex-direction: column; align-items: stretch; background: #0b0b0c; padding: 12px 20px 22px; border-bottom: 1px solid var(--line); margin: 0; }
  .nav.open { display: flex; } .nav a { padding: 14px 6px; border-bottom: 1px solid var(--line); } .nav a.btn { text-align: center; margin: 14px 0 0; border-bottom: 0; }
  .hero { padding: 56px 0; } .hero-in { grid-template-columns: 1fr; } .hero-art { display: none; }
  .strip-in { grid-template-columns: 1fr 1fr; } .cards3, .cards4, .steps, .price-tabs { grid-template-columns: 1fr 1fr; }
  .why, .lead-in, .two { grid-template-columns: 1fr; gap: 30px; } .ftr-in { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  body { font-size: 16px; } .section { padding: 60px 0; }
  .cards3, .cards4, .steps, .price-tabs, .why-grid, .strip-in, .strip-in.solo, .ftr-in { grid-template-columns: 1fr; }
  .logo img { width: 128px; } .hdr-in { height: 68px; } .nav { top: 68px; }
  .hero-cta .btn { width: 100%; text-align: center; }
}