/* страницы-офферы arturr_city: тот же чёрный, орнамент, SF, карточки */
:root {
  --fg: #f2f2f2; --muted: #8a8a8a; --line2: #1d1d1d; --pad: clamp(16px, 3.4vw, 48px);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
}
* { box-sizing: border-box; border-radius: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: #000 url(../img/ornament.jpg) repeat; background-size: 520px 520px; color: var(--fg); font: 400 15px/1.4 var(--font); letter-spacing: -.03em; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
.code { font: 500 11.5px/1.3 var(--mono); letter-spacing: 0; color: var(--muted); }

.bar { position: sticky; top: 0; z-index: 20; display: flex; justify-content: space-between; padding: 18px var(--pad); background: linear-gradient(#000 40%, rgba(0,0,0,0)); }
.bar a:hover { color: var(--muted); }

.wrap { max-width: 1480px; margin: 0 auto; padding: 0 var(--pad) 40px; }
.grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 14px; }
.c { position: relative; grid-column: span var(--w, 4); display: flex; flex-direction: column; padding: 28px; background: #0b0b0b; border: 1px solid var(--line2); overflow: hidden;
     opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
.c.on { opacity: 1; transform: none; }
.c h3 { margin: 0; font-size: clamp(24px, 2.1vw, 32px); font-weight: 400; letter-spacing: -.05em; line-height: 1.02; }
.c p { margin: 12px 0 0; color: #a3a3a3; font-size: 16px; line-height: 1.45; letter-spacing: -.02em; }
.c.white { background: #f2f2f2; color: #0b0b0b; border-color: #f2f2f2; }
.c.white p { color: #555; }
.c.clear { background: transparent; border-color: transparent; padding-left: 0; padding-right: 0; }
.n { font: 500 12px var(--mono); letter-spacing: 0; color: var(--muted); margin-bottom: 18px; display: block; }

.hero { padding: 9vh 0 6vh; display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 24px 48px; align-items: end; }
.hero h1 { margin: 0; font-size: clamp(64px, 10.5vw, 196px); font-weight: 300; letter-spacing: -.075em; line-height: .84; }
.hero .lead { margin: 0; font-size: clamp(19px, 1.7vw, 25px); line-height: 1.3; color: #d6d6d6; letter-spacing: -.035em; }
.price { margin: 22px 0 0; font-size: clamp(40px, 4vw, 64px); font-weight: 300; letter-spacing: -.07em; line-height: 1; }
.price small { font-size: 15px; letter-spacing: -.02em; color: var(--muted); margin-left: 10px; }
.btn { display: inline-block; margin-top: 22px; padding: 15px 22px 16px; background: var(--fg); color: #000; font-size: 16px; }
.btn:hover { opacity: .85; }
.c.white .btn { background: #0b0b0b; color: var(--fg); }
.under { margin-top: 10px; color: var(--muted); font-size: 13px; }

.sec-h { grid-column: span 12; margin: 70px 0 4px; font-size: clamp(44px, 5.6vw, 96px); font-weight: 300; letter-spacing: -.07em; line-height: .9; }
.num { display: block; margin-top: 16px; font-size: clamp(40px, 4.6vw, 76px); font-weight: 300; letter-spacing: -.07em; line-height: .9; }
.num small { display: block; margin-top: 8px; font-size: 14px; letter-spacing: -.02em; color: var(--muted); font-weight: 400; }
.steps { list-style: none; margin: 6px 0 0; padding: 0; counter-reset: s; }
.steps li { counter-increment: s; display: flex; gap: 16px; align-items: baseline; padding: 16px 0; border-top: 1px solid var(--line2); font-size: clamp(18px, 1.6vw, 23px); letter-spacing: -.035em; }
.steps li::before { content: "0" counter(s); font: 500 12px var(--mono); color: var(--muted); letter-spacing: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 18px; }
.chips span { padding: 6px 10px 7px; border: 1px solid #262626; font-size: 13px; color: #bdbdbd; }
.code-vis { margin: 18px 0 0; padding: 16px 18px; background: #050505; border: 1px solid var(--line2); font: 500 12.5px/1.6 var(--mono); letter-spacing: 0; color: #9b9b9b; white-space: pre; overflow: hidden; }
.code-vis b { color: var(--fg); font-weight: 500; }
.no li::before { content: "нет"; color: #c35a5a; }
details { border-top: 1px solid var(--line2); }
details:last-child { border-bottom: 1px solid var(--line2); }
summary { list-style: none; cursor: pointer; padding: 18px 40px 18px 0; position: relative; font-size: clamp(18px, 1.6vw, 22px); letter-spacing: -.035em; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 4px; top: 14px; font-size: 26px; font-weight: 300; color: var(--muted); }
details[open] summary::after { content: "−"; }
details p { margin: 0 0 18px !important; }
.end { display: block; margin-top: 8px; font-size: clamp(56px, 9vw, 170px); font-weight: 300; letter-spacing: -.075em; line-height: .86; }
.end:hover { color: var(--muted); }
.foot { display: flex; justify-content: space-between; padding: 40px 0 10px; color: var(--muted); }
.foot a:hover { color: var(--fg); }

@media (max-width: 980px) { .c { grid-column: span 6; } .c.wide { grid-column: span 12; } }
@media (max-width: 720px) {
  .grid { gap: 10px; } .c { grid-column: span 12 !important; padding: 22px; }
  .hero { grid-template-columns: 1fr; padding-top: 5vh; } .hero h1 { font-size: 19vw; }
}
.logo-box { display: grid; place-items: center; height: clamp(140px, 14vw, 200px); margin: 0 -28px 24px; border-bottom: 1px solid var(--line2); }
.logo-box img { display: block; height: auto; max-height: 46%; object-fit: contain; }
@media (max-width: 720px) { .logo-box { margin: 0 -22px 22px; height: 140px; } }
.logo-box { position: relative; overflow: hidden; }
.logo-box img.d3 { position: absolute; top: 5%; bottom: 5%; left: 0; right: 0; margin: auto; height: 90%; width: auto; max-height: none; mix-blend-mode: screen; animation: d3float 6s ease-in-out infinite; }
@keyframes d3float { 50% { transform: translateY(-3%) rotate(-1.5deg); } }