:root {
  --bg: #07080c;
  --bg-elevated: #0e1018;
  --bg-soft: #12151f;
  --text: #f2f4f8;
  --text-muted: #9aa3b5;
  --line: rgba(255, 255, 255, 0.08);
  --cyan: #2ec5f0;
  --orange: #f28c28;
  --green: #8fd12a;
  --purple: #a13d9b;
  --radius: 18px;
  --container: 1120px;
  --font: "Manrope", sans-serif;
  --display: "Unbounded", sans-serif;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  position: relative;
  isolation: isolate;
  overflow-x: hidden;
}

/* Site-wide color motion */
.ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
  background: var(--bg);
  /* smoother compositing, fewer banding artifacts */
  transform: translateZ(0);
}

.ambient-wash {
  position: absolute;
  inset: -35%;
  background:
    radial-gradient(closest-side at 20% 30%, rgba(46, 197, 240, 0.32), transparent 72%),
    radial-gradient(closest-side at 78% 40%, rgba(161, 61, 155, 0.28), transparent 70%),
    radial-gradient(closest-side at 45% 85%, rgba(143, 209, 42, 0.22), transparent 68%),
    radial-gradient(closest-side at 60% 15%, rgba(46, 197, 240, 0.14), transparent 65%);
  opacity: 0.9;
  /* transform animation instead of background-position — меньше полос */
  animation: wash-drift 48s ease-in-out infinite;
  will-change: transform;
}

.ambient-orb {
  position: absolute;
  border-radius: 50%;
  /* без mix-blend-mode и сильного blur — меньше banding */
  will-change: transform, opacity;
}

.ambient-orb--cyan {
  width: min(58vw, 540px);
  height: min(58vw, 540px);
  top: -10%;
  left: -12%;
  background: radial-gradient(
    circle at 40% 40%,
    rgba(46, 197, 240, 0.38) 0%,
    rgba(46, 197, 240, 0.16) 35%,
    rgba(46, 197, 240, 0.05) 58%,
    transparent 72%
  );
  animation: orb-drift-a 48s ease-in-out infinite;
}

.ambient-orb--purple {
  width: min(62vw, 600px);
  height: min(62vw, 600px);
  top: 26%;
  right: -20%;
  background: radial-gradient(
    circle at 50% 45%,
    rgba(161, 61, 155, 0.34) 0%,
    rgba(161, 61, 155, 0.14) 38%,
    rgba(161, 61, 155, 0.04) 60%,
    transparent 74%
  );
  animation: orb-drift-b 56s ease-in-out infinite;
}

.ambient-orb--green {
  width: min(52vw, 480px);
  height: min(52vw, 480px);
  bottom: -14%;
  left: 16%;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(143, 209, 42, 0.28) 0%,
    rgba(143, 209, 42, 0.12) 36%,
    rgba(143, 209, 42, 0.04) 58%,
    transparent 72%
  );
  animation: orb-drift-c 52s ease-in-out infinite;
}

/* Лёгкий шум ломает видимые полосы градиента */
.ambient-noise {
  position: absolute;
  inset: 0;
  opacity: 0.055;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px 180px;
  mix-blend-mode: soft-light;
  pointer-events: none;
}

@keyframes wash-drift {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1) rotate(0deg); }
  50% { transform: translate3d(3%, -2%, 0) scale(1.06) rotate(4deg); }
}

@keyframes orb-drift-a {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); opacity: 0.7; }
  33% { transform: translate3d(3vw, 2vh, 0) scale(1.03); opacity: 0.85; }
  66% { transform: translate3d(1.5vw, 4vh, 0) scale(0.99); opacity: 0.75; }
}

@keyframes orb-drift-b {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); opacity: 0.65; }
  40% { transform: translate3d(-4vw, -2vh, 0) scale(1.04); opacity: 0.82; }
  70% { transform: translate3d(-1.5vw, 3vh, 0) scale(0.99); opacity: 0.7; }
}

@keyframes orb-drift-c {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); opacity: 0.6; }
  50% { transform: translate3d(2.5vw, -3vh, 0) scale(1.04); opacity: 0.8; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .logo-glow,
  .hero-logo,
  .ambient-wash,
  .ambient-orb,
  .brand-hero,
  .btn-primary,
  .mobile-call {
    animation: none !important;
  }
  .btn,
  .service {
    transition: none;
  }
  .ambient-wash {
    opacity: 0.55;
    transform: none;
  }
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea {
  font: inherit;
}

.container {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

.narrow {
  width: min(100% - 2rem, 720px);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--cyan);
  color: #000;
  padding: 0.75rem 1rem;
  z-index: 1000;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(7, 8, 12, 0.55);
  border-bottom: none;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--display);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.brand img {
  width: 44px;
  height: 44px;
  object-fit: contain;
}

.brand-text {
  font-size: 1.1rem;
}

.nav {
  display: none;
  gap: 1.1rem;
  margin-left: auto;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.nav a:hover,
.phone-link:hover {
  color: var(--text);
}

.phone-link {
  display: none;
  margin-left: auto;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.header-cta {
  display: none;
}

.nav-toggle {
  margin-left: auto;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: transparent;
  display: grid;
  place-content: center;
  gap: 6px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
}

.mobile-nav {
  display: grid;
  gap: 0.85rem;
  padding: 0 1rem 1.25rem;
  border-bottom: 1px solid var(--line);
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav a:not(.btn) {
  color: var(--text-muted);
  padding: 0.35rem 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 0.7rem 1.25rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  color: #071018;
  background: linear-gradient(120deg, var(--cyan), #9b4dff 40%, var(--green), var(--cyan));
  background-size: 220% 220%;
  animation: brand-shift 16s ease-in-out infinite;
  box-shadow: 0 10px 30px rgba(46, 197, 240, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 14px 36px rgba(46, 197, 240, 0.35);
}

.btn-ghost {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.06);
}

.btn-lg {
  padding: 0.95rem 1.45rem;
  font-size: 1rem;
}

/* Hero */
.hero {
  position: relative;
  min-height: min(100vh, 920px);
  display: grid;
  align-items: center;
  overflow: hidden;
  padding: 3rem 0 4rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 40%, rgba(161, 61, 155, 0.12), transparent 55%),
    radial-gradient(ellipse 50% 45% at 15% 20%, rgba(46, 197, 240, 0.1), transparent 50%),
    linear-gradient(180deg, rgba(7, 8, 12, 0.35) 0%, rgba(7, 8, 12, 0.55) 100%);
  pointer-events: none;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.22;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at 70% 45%, black 10%, transparent 70%);
}

.hero-inner {
  position: relative;
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.brand-hero {
  margin: 0 0 0.5rem;
  font-family: var(--display);
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  background: linear-gradient(
    110deg,
    var(--cyan),
    #fff 28%,
    var(--purple) 52%,
    var(--green) 78%,
    var(--cyan)
  );
  background-size: 220% 220%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: brand-shift 18s ease-in-out infinite;
}

@keyframes brand-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
}

.hero h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.45rem, 3.2vw, 2.15rem);
  line-height: 1.25;
  letter-spacing: -0.03em;
  font-weight: 500;
  color: var(--text);
}

.hero-lead {
  margin: 1.25rem 0 0;
  max-width: 34rem;
  color: var(--text-muted);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.75rem;
}

.hero-visual {
  position: relative;
  display: grid;
  place-items: center;
  justify-self: center;
}

.logo-glow {
  position: absolute;
  width: min(70vw, 360px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(46, 197, 240, 0.28), rgba(161, 61, 155, 0.18), transparent 68%);
  filter: blur(8px);
  animation: pulse-glow 4.5s ease-in-out infinite;
}

.hero-logo {
  position: relative;
  width: min(72vw, 380px);
  height: auto;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.55));
  animation: float-logo 6s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { transform: scale(1); opacity: 0.75; }
  50% { transform: scale(1.08); opacity: 1; }
}

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

/* Sections */
.section {
  padding: 5rem 0;
  border-top: none;
  position: relative;
}

.benefit,
.service,
.compare-table,
.steps li,
details,
.contact-form {
  backdrop-filter: blur(10px);
  background: rgba(14, 16, 24, 0.72);
}

.section-head {
  max-width: 40rem;
  margin-bottom: 2.5rem;
}

.section-head h2 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.section-head p {
  margin: 0.85rem 0 0;
  color: var(--text-muted);
}

/* Benefits */
.benefit-grid {
  display: grid;
  gap: 1rem;
}

.benefit {
  position: relative;
  padding: 1.5rem 1.4rem 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.benefit-accent {
  display: block;
  width: 48px;
  height: 4px;
  border-radius: 999px;
  margin-bottom: 1.1rem;
}

.accent-cyan { background: var(--cyan); }
.accent-orange { background: var(--orange); }
.accent-green { background: var(--green); }

.benefit h3 {
  margin: 0 0 0.6rem;
  font-size: 1.15rem;
}

.benefit p {
  margin: 0;
  color: var(--text-muted);
}

.price {
  margin: 0 0 0.75rem !important;
  color: var(--text) !important;
  font-family: var(--display);
  font-size: 1.7rem;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.price span {
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
}

/* Compare */
.compare-table {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.compare-row {
  display: grid;
  grid-template-columns: 1.1fr 1fr 1fr;
  gap: 0.75rem;
  padding: 1rem 1.1rem;
  border-top: 1px solid var(--line);
  font-size: 0.95rem;
}

.compare-row:first-child {
  border-top: 0;
}

.compare-head {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-muted);
  font-weight: 600;
}

.compare-row > :first-child {
  color: var(--text-muted);
}

.compare-row > :last-child {
  color: var(--cyan);
  font-weight: 600;
}

.compare-note {
  margin: 1.25rem 0 0;
  color: var(--text-muted);
}

/* Services */
.service-grid {
  display: grid;
  gap: 1rem;
}

.service {
  padding: 1.35rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(46, 197, 240, 0.06), transparent 40%),
    rgba(14, 16, 24, 0.72);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.service:hover {
  border-color: rgba(46, 197, 240, 0.35);
  transform: translateY(-2px);
}

.service h3 {
  margin: 0 0 0.55rem;
  font-size: 1.05rem;
}

.service p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.96rem;
}

/* Steps */
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1.25rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.step-num {
  font-family: var(--display);
  color: var(--orange);
  font-weight: 600;
  font-size: 1.1rem;
}

.steps h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.steps p {
  margin: 0;
  color: var(--text-muted);
}

/* FAQ */
.faq-list {
  display: grid;
  gap: 0.75rem;
}

details {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.85rem 1rem;
}

summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

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

details p {
  margin: 0.75rem 0 0.25rem;
  color: var(--text-muted);
}

/* Contact */
.contact {
  background: transparent;
}

.contact-grid {
  display: grid;
  gap: 2rem;
}

.contact-info h2 {
  margin: 0 0 0.85rem;
  font-family: var(--display);
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  letter-spacing: -0.03em;
}

.contact-info > p {
  color: var(--text-muted);
  max-width: 32rem;
}

.contact-phone {
  display: block;
  margin-top: 1.5rem;
  font-family: var(--display);
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--cyan);
}

.contact-mail {
  display: inline-block;
  margin-top: 0.6rem;
  font-weight: 600;
}

.contact-geo {
  margin-top: 1.25rem;
  color: var(--text-muted);
}

.contact-form {
  padding: 1.5rem;
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid var(--line);
  background: rgba(14, 16, 24, 0.78);
  box-shadow: var(--shadow);
  display: grid;
  gap: 0.9rem;
  position: relative;
}

.hp-field {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.contact-form h3 {
  margin: 0 0 0.25rem;
}

.contact-form label {
  display: grid;
  gap: 0.4rem;
}

.contact-form label span {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #0a0c12;
  color: var(--text);
  padding: 0.85rem 0.95rem;
  outline: none;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: rgba(46, 197, 240, 0.55);
  box-shadow: 0 0 0 3px rgba(46, 197, 240, 0.12);
}

.checkbox {
  grid-template-columns: auto 1fr !important;
  align-items: start;
  gap: 0.65rem !important;
}

.checkbox input {
  width: auto;
  margin-top: 0.2rem;
}

.checkbox a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.form-status {
  min-height: 1.25rem;
  margin: 0;
  font-size: 0.92rem;
  color: var(--green);
}

.form-status.error {
  color: #ff7b7b;
}

/* Footer */
.site-footer {
  border-top: none;
  padding: 2rem 0 6rem;
}

.footer-inner {
  display: grid;
  gap: 1.25rem;
}

.footer-brand {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.footer-brand img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.footer-brand strong,
.footer-brand span {
  display: block;
}

.footer-brand span {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.25rem;
  color: var(--text-muted);
}

.footer-copy {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.mobile-call {
  position: fixed;
  left: 1rem;
  right: 1rem;
  bottom: 1rem;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  border-radius: 999px;
  font-weight: 700;
  color: #071018;
  background: linear-gradient(120deg, var(--cyan), #9b4dff 45%, var(--green), var(--cyan));
  background-size: 220% 220%;
  animation: brand-shift 16s ease-in-out infinite;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.45);
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Desktop */
@media (min-width: 768px) {
  .nav {
    display: flex;
  }

  .phone-link {
    display: inline;
  }

  .header-cta {
    display: inline-flex;
  }

  .nav-toggle,
  .mobile-nav,
  .mobile-call {
    display: none;
  }

  .site-footer {
    padding-bottom: 2.5rem;
  }

  .benefit-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .hero-inner {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2rem;
  }

  .service-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .steps {
    grid-template-columns: repeat(3, 1fr);
  }

  .steps li {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .compare-row {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .compare-head {
    display: none;
  }

  .compare-row > :last-child::before {
    content: "Цифбла: ";
    color: var(--text-muted);
    font-weight: 500;
  }
}