:root {
  --header-start: #0f1b2d;
  --header-end: #152540;
  --bg: #eef2f6;
  --bg-soft: #f7f8fa;
  --card: #ffffff;
  --ink: #0f1b2d;
  --muted: #5c6b7a;
  --label: #8a93a0;
  --line: rgba(15, 27, 45, 0.08);
  --accent: #e53935;
  --accent-hover: #c62828;
  --blue: #2aabee;
  --blue-soft: #e8f6fd;
  --font-display: "Unbounded", system-ui, sans-serif;
  --font-body: "Manrope", system-ui, sans-serif;
  --max: 1040px;
  --radius: 20px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  background: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

.wrap {
  width: min(100% - 1.5rem, var(--max));
  margin-inline: auto;
}

/* —— animated atmosphere —— */
.bg-mesh {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(42, 171, 238, 0.22), transparent 55%),
    radial-gradient(ellipse 70% 45% at 95% 5%, rgba(229, 57, 53, 0.14), transparent 50%),
    radial-gradient(ellipse 60% 40% at 50% 100%, rgba(42, 171, 238, 0.12), transparent 55%),
    linear-gradient(180deg, #dce6f0 0%, var(--bg) 28%, var(--bg-soft) 100%);
  animation: meshShift 18s ease-in-out infinite alternate;
}

@keyframes meshShift {
  from { filter: hue-rotate(0deg); transform: scale(1); }
  to { filter: hue-rotate(12deg); transform: scale(1.03); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.45; transform: scale(1); }
  50% { opacity: 0.75; transform: scale(1.06); }
}

.reveal {
  animation: fadeUp 0.7s ease both;
}

.reveal-delay-1 { animation-delay: 0.12s; }
.reveal-delay-2 { animation-delay: 0.24s; }
.reveal-delay-3 { animation-delay: 0.36s; }

/* —— header —— */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: linear-gradient(180deg, var(--header-start), var(--header-end));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: #fff;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
}

.brand:hover { text-decoration: none; }

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 9px;
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  font-size: 0.9rem;
}

.top-nav a {
  color: rgba(255, 255, 255, 0.82);
}

.top-nav a:hover { color: #fff; }

/* —— hero —— */
.hero-band {
  background: linear-gradient(165deg, var(--header-start) 0%, #183153 55%, #1a3a5c 100%);
  color: #fff;
  padding: 2.2rem 0 3.2rem;
  position: relative;
  overflow: hidden;
}

.hero-band::after {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  right: -80px;
  top: -60px;
  background: radial-gradient(circle, rgba(42, 171, 238, 0.28), transparent 68%);
  animation: pulseGlow 5s ease-in-out infinite;
  pointer-events: none;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero h1 {
  margin: 0 0 0.9rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.55rem, 4.2vw, 2.55rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero .lead {
  margin: 0 0 1.4rem;
  color: rgba(255, 255, 255, 0.78);
  font-size: 1.05rem;
  max-width: 34rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.7rem 1.25rem;
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.95rem;
  border: 1px solid transparent;
  text-decoration: none;
  transition: background 0.15s ease, transform 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover { background: var(--accent-hover); }

.btn-ghost {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.22);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.14);
}

.btn-blue {
  background: var(--blue);
  color: #fff;
}

.btn-blue:hover { filter: brightness(0.95); }

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-glow {
  position: absolute;
  inset: 12% 18%;
  background: rgba(42, 171, 238, 0.35);
  filter: blur(40px);
  animation: pulseGlow 4.5s ease-in-out infinite;
}

.phone-frame {
  position: relative;
  z-index: 1;
  width: min(100%, 280px);
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: #0a1018;
  animation: floatY 5.5s ease-in-out infinite;
}

.phone-frame img { width: 100%; }

/* —— sections / white cards like app —— */
.section {
  padding: 2.4rem 0;
}

.section-head {
  margin-bottom: 1.1rem;
}

.section-head h2 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.8vw, 1.7rem);
  line-height: 1.25;
  letter-spacing: -0.015em;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  max-width: 42rem;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  padding: 1.25rem 1.2rem;
  box-shadow: 0 1px 0 rgba(15, 27, 45, 0.03);
}

.card + .card { margin-top: 0.85rem; }

.card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.card-label {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--label);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.badge-soon {
  display: inline-block;
  margin-left: 0.35rem;
  padding: 0.12rem 0.5rem;
  border-radius: 999px;
  background: #fff3e0;
  color: #e65100;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  vertical-align: middle;
}

.card-soon {
  border-style: dashed;
  background: linear-gradient(160deg, #fff 0%, #fff8f0 100%);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
}

.shot-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  align-items: start;
}

.shot-row .phone-frame {
  width: min(100%, 280px);
  margin-inline: auto;
  animation: none;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: #fff;
}

.shot-row .phone-frame:nth-child(2) {
  animation: floatY 6s ease-in-out infinite;
  animation-delay: 0.4s;
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
  counter-reset: step;
}

.steps li {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.1rem;
}

.steps li::before {
  counter-increment: step;
  content: "Шаг " counter(step);
  display: block;
  margin-bottom: 0.45rem;
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
}

.steps strong {
  display: block;
  margin-bottom: 0.35rem;
}

.steps span {
  color: var(--muted);
  font-size: 0.95rem;
}

.prose {
  color: var(--muted);
  font-size: 0.98rem;
}

.prose p { margin: 0 0 0.85rem; }
.prose p:last-child { margin-bottom: 0; }
.prose ul {
  margin: 0.4rem 0 0.9rem;
  padding-left: 1.15rem;
}
.prose li { margin: 0.35rem 0; }

.faq details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0.9rem 1.05rem;
  margin-bottom: 0.65rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  content: "+";
  float: right;
  color: var(--blue);
  font-weight: 700;
}

.faq details[open] summary::after { content: "–"; }

.faq details p {
  margin: 0.7rem 0 0;
  color: var(--muted);
  font-size: 0.96rem;
}

.keywords-box {
  background: var(--blue-soft);
  border: 1px solid rgba(42, 171, 238, 0.2);
  border-radius: var(--radius);
  padding: 1.15rem 1.2rem;
  color: var(--ink);
  font-size: 0.92rem;
  line-height: 1.7;
}

.download-band .card {
  background: linear-gradient(160deg, #fff 0%, #f3f9fd 100%);
  padding: 1.5rem 1.25rem;
}

.site-footer {
  padding: 1.6rem 0 2.2rem;
  color: var(--muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.55);
}

.footer-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  justify-content: space-between;
  align-items: center;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.1rem;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .hero-visual { order: -1; }

  .phone-frame { width: min(100%, 220px); }

  .grid-2,
  .grid-3,
  .steps {
    grid-template-columns: 1fr;
  }

  .shot-row {
    grid-template-columns: 1fr;
  }

  .shot-row .phone-frame {
    width: min(100%, 320px);
  }

  .top-nav { display: none; }
}

@media (max-width: 480px) {
  body { font-size: 15px; }

  .hero h1 { font-size: 1.45rem; }

  .hero .lead { font-size: 0.98rem; }

  .btn {
    width: 100%;
  }

  .cta-row { width: 100%; }

  .card { padding: 1.05rem 1rem; }

  .phone-frame { width: min(100%, 200px); border-radius: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  .bg-mesh,
  .phone-frame,
  .hero-glow,
  .hero-band::after,
  .reveal,
  .reveal-delay-1,
  .reveal-delay-2,
  .reveal-delay-3 {
    animation: none !important;
  }
}