:root{
  --bg:#ffffff;
  --ink:#1f2937;
  --muted:#6b7280;
  --card:#ffffff;
  --alt:#f6fbff;
  --brand:#2563eb;
  --brand2:#22c55e;
  --ring: rgba(37,99,235,.25);
  --shadow: 0 12px 30px rgba(31,41,55,.10);
  --r: 18px;

  /* Fluid-адаптация */
  --pad: clamp(12px, 3.6vw, 18px);
  --gap: clamp(10px, 2.8vw, 16px);
  --h1: clamp(26px, 6.5vw, 46px);
  --h2: clamp(22px, 5.2vw, 30px);
  --lead: clamp(15px, 3.8vw, 18px);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--ink);
  background:var(--bg);
  overflow-x:hidden; /* убирает горизонтальные "обрезки" из-за декора */
  line-height:1.45;
}
img{max-width:100%; height:auto; display:block;}

.container{
  width:min(1080px, 100%);
  margin:0 auto;
  padding:0 var(--pad);
}

/* Topbar */
.topbar{
  position:sticky; top:0; z-index:20;
  display:flex; align-items:center; justify-content:space-between;
  gap:10px;
  backdrop-filter: blur(10px);
  background: rgba(255,255,255,.72);
  border-bottom: 1px solid rgba(31,41,55,.06);
  padding: 10px var(--pad);
}
.brand{
  font-weight:700;
  text-decoration:none;
  color:var(--ink);
  max-width: 60vw;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Nav */
.nav{display:flex; gap:14px; align-items:center}
.nav a{
  color:var(--ink);
  text-decoration:none;
  padding:8px 10px;
  border-radius:12px
}
.nav a:hover{background:rgba(37,99,235,.08)}

/* Burger */
.burger{
  display:none;
  width:44px; height:44px;
  border-radius:12px;
  border:1px solid rgba(31,41,55,.10);
  background: rgba(255,255,255,.85);
  box-shadow: 0 8px 18px rgba(31,41,55,.08);
}
.burger span{
  display:block;
  height:2px; width:20px;
  background: var(--ink);
  margin: 5px auto;
  border-radius: 2px;
}

/* Buttons */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap:8px;
  padding: 12px 16px;
  border-radius: 14px;
  background: var(--brand);
  color:white;
  text-decoration:none;
  border: 1px solid transparent;
  box-shadow: 0 10px 22px rgba(37,99,235,.18);
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.btn:hover{transform: translateY(-2px); box-shadow: 0 14px 26px rgba(37,99,235,.22)}
.btn:active{transform: translateY(0)}
.btn-sm{padding:9px 12px; border-radius: 12px}
.btn-ghost{
  background: transparent;
  border-color: rgba(37,99,235,.22);
  color: var(--brand);
  box-shadow:none;
}
.btn-ghost:hover{background: rgba(37,99,235,.08)}

/* Hero */
.hero{
  position:relative;
  padding: clamp(56px, 8vw, 70px) 0 34px;
  overflow:hidden;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap: var(--gap);
  align-items:center;
}
.kicker{color:var(--muted); margin:0 0 8px}
h1{font-size: var(--h1); line-height:1.08; margin: 0 0 12px}
h2{font-size: var(--h2); margin:0 0 14px}
h3{margin:0 0 10px}
.lead{font-size: var(--lead); color: var(--muted); margin: 0 0 18px}
.hero-actions{display:flex; gap:10px; flex-wrap:wrap; margin-bottom:14px}
.chips{display:flex; gap:10px; flex-wrap:wrap; padding:0; margin:0; list-style:none}
.chips li{
  padding:8px 10px;
  border-radius: 999px;
  background: rgba(34,197,94,.12);
  border: 1px solid rgba(34,197,94,.18);
  color: #166534;
  font-size: 13px;
}

/* Cards / Panels */
.card, .panel, .mini-card, .shot{width:100%;}
.card{
  background: var(--card);
  border-radius: var(--r);
  box-shadow: var(--shadow);
  border: 1px solid rgba(31,41,55,.08);
  overflow:hidden;
  transform-origin: 50% 70%;
  transition: transform .2s ease;
}
.card:hover{transform: rotate(-.3deg) scale(1.01)}
.avatar{
  width:100%;
  height:auto;
  aspect-ratio: 4 / 5;   /* без обрезков и "скачков" на разных экранах */
  object-fit: cover;
}
.card-caption{padding:14px 14px 16px}
.card-title{font-weight:800}
.card-subtitle{color:var(--muted); margin-top:2px; font-size:14px}

.section{padding: 52px 0}
.section-alt{background: var(--alt)}
.muted{color:var(--muted); margin-top:0}

.grid-2{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--gap);
  align-items: stretch;
}
.panel{
  background: var(--card);
  border: 1px solid rgba(31,41,55,.08);
  border-radius: var(--r);
  box-shadow: var(--shadow);
  padding: var(--pad);
}
.panel p{margin-top:0}

.list{margin:10px 0 0; padding-left: 18px; color: var(--ink)}
.list li{margin: 6px 0}

.cards{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--gap);
  align-items: stretch;
}
.mini-card{
  background: var(--card);
  border: 1px solid rgba(31,41,55,.08);
  border-radius: var(--r);
  box-shadow: var(--shadow);
  padding: var(--pad);
  transition: transform .18s ease, box-shadow .18s ease;
}
.mini-card:hover{transform: translateY(-3px); box-shadow: 0 16px 34px rgba(31,41,55,.12)}
.icon{
  font-size: 22px; width: 44px; height:44px;
  display:grid; place-items:center;
  border-radius: 14px;
  background: rgba(37,99,235,.10);
  margin-bottom: 10px;
}

/* Gallery */
.gallery{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  align-items: stretch;
}
.shot{
  border-radius: 16px;
  overflow:hidden;
  border: 1px solid rgba(31,41,55,.08);
  box-shadow: var(--shadow);
  transform: translateZ(0);
}
.shot img{
  width:100%;
  height:auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform .25s ease;
}
.shot:hover img{transform: scale(1.06)}

/* Form */
.field{display:grid; gap:6px; margin: 10px 0}
input, textarea{
  width:100%;
  border-radius: 14px;
  border: 1px solid rgba(31,41,55,.14);
  padding: 12px 12px;
  font: inherit;
  outline:none;
}
input:focus, textarea:focus{box-shadow: 0 0 0 5px var(--ring); border-color: rgba(37,99,235,.35)}

.footer{padding: 20px 0; border-top: 1px solid rgba(31,41,55,.06)}

/* Background animation */
.hero-bg{position:absolute; inset:0; pointer-events:none; opacity:.95}
.cloud{
  position:absolute; top: 26px;
  width: 170px; height: 56px;
  background: rgba(37,99,235,.08);
  border: 1px solid rgba(37,99,235,.12);
  border-radius: 999px;
  filter: blur(.2px);
}
.cloud::after,.cloud::before{
  content:""; position:absolute; background: inherit; border: inherit; border-radius:999px;
}
.cloud::before{width: 70px; height: 70px; left: 18px; top: -26px}
.cloud::after{width: 90px; height: 90px; left: 70px; top: -42px}
.c1{left:-40px; animation: drift 12s linear infinite}
.c2{right:-60px; top: 84px; animation: drift2 14s linear infinite}

.balloon{
  position:absolute;
  width: 34px; height: 44px;
  border-radius: 999px;
  background: rgba(34,197,94,.16);
  border: 1px solid rgba(34,197,94,.22);
  top: 140px;
  animation: float 3.4s ease-in-out infinite;
}
.balloon::after{
  content:""; position:absolute; left:50%; top:100%;
  width: 2px; height: 28px; background: rgba(34,197,94,.28);
  transform: translateX(-50%);
}
.b1{left: 10%; animation-delay: .2s}
.b2{left: 86%; top: 170px; animation-delay: .8s; background: rgba(37,99,235,.12); border-color: rgba(37,99,235,.18)}

@keyframes float{0%,100%{transform: translateY(0)}50%{transform: translateY(-10px)}}
@keyframes drift{0%{transform: translateX(0)}100%{transform: translateX(420px)}}
@keyframes drift2{0%{transform: translateX(0)}100%{transform: translateX(-420px)}}

/* Reveal */
.reveal{opacity:0; transform: translateY(12px); transition: opacity .6s ease, transform .6s ease}
.reveal.show{opacity:1; transform: translateY(0)}

/* Mobile nav */
@media (max-width: 720px){
  .burger{display:inline-block;}
  .nav{
    display:none;
    position:absolute;
    left: var(--pad);
    right: var(--pad);
    top: 58px;
    padding: 10px;
    background: rgba(255,255,255,.92);
    border: 1px solid rgba(31,41,55,.08);
    border-radius: 16px;
    box-shadow: var(--shadow);
    flex-direction: column;
    align-items: stretch;
  }
  .nav.open{display:flex;}
  .nav a{padding: 12px 12px;}
  .hero-actions .btn{width:100%;}
}

/* Layout tweaks */
@media (max-width: 900px){
  .hero-grid{grid-template-columns: 1fr}
}

/* Safe area (iPhone) */
@supports (padding: max(0px)){
  .topbar{
    padding-top: max(10px, env(safe-area-inset-top));
    padding-left: max(var(--pad), env(safe-area-inset-left));
    padding-right: max(var(--pad), env(safe-area-inset-right));
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .reveal, .cloud, .balloon, .btn, .mini-card, .shot img, .card{transition:none; animation:none}
}