/* KEYOGE ОТВЕТЫ — лендинг. Mobile-first. */

:root {
  /* Фирменные цвета из логотипа */
  --cyan: #00bfff;
  --cyan-soft: rgba(0, 191, 255, .12);
  --red: #ff0811;
  --red-text: #ff4d55; /* красный для текста на тёмном фоне — выше контраст */
  --red-soft: rgba(255, 8, 17, .12);

  --bg: #06080d;
  --bg-alt: #0a0e15;
  --surface: #0f141d;
  --surface-2: #151b26;
  --line: rgba(255, 255, 255, .08);
  --line-strong: rgba(255, 255, 255, .14);
  --text: #eef2f7;
  --muted: #a3adbd;
  --on-cyan: #031018;

  --radius: 20px;
  --radius-sm: 14px;
  --gutter: clamp(16px, 5vw, 32px);
  --max: 1160px;
  --header-h: 64px;
  --shadow: 0 18px 50px -20px rgba(0, 0, 0, .7);
  --ease: cubic-bezier(.2, .7, .2, 1);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 1rem/1.6 var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

@supports (overflow: clip) { body { overflow-x: clip; } }

img, svg { display: block; max-width: 100%; }
h1, h2, h3, p, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: var(--cyan); text-underline-offset: .2em; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 8px;
}

.container {
  width: 100%;
  max-width: calc(var(--max) + 2 * var(--gutter));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.c-cyan { color: var(--cyan); }
.c-red { color: var(--red); }
.nowrap { white-space: nowrap; }
.icon { width: 1.25em; height: 1.25em; flex: none; }

.skip-link {
  position: fixed;
  left: 12px;
  top: -60px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: 10px;
  background: var(--cyan);
  color: var(--on-cyan);
  font-weight: 700;
  text-decoration: none;
}
.skip-link:focus { top: 12px; }

/* ---------- Кнопки ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55em;
  min-height: 48px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: transform .2s var(--ease), background-color .2s, box-shadow .2s, border-color .2s, color .2s;
  -webkit-tap-highlight-color: transparent;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px) scale(.99); }

.btn-primary {
  background: var(--cyan);
  color: var(--on-cyan);
  box-shadow: 0 10px 30px -12px rgba(0, 191, 255, .55);
}
.btn-primary:hover { background: #33ccff; box-shadow: 0 14px 34px -12px rgba(0, 191, 255, .65); transform: translateY(-1px); }

.btn-ghost {
  background: rgba(255, 255, 255, .03);
  color: var(--text);
  border-color: var(--line-strong);
}
.btn-ghost:hover { border-color: rgba(255, 255, 255, .32); background: rgba(255, 255, 255, .06); }
.btn-ghost .icon { color: var(--red-text); }

.btn-light { background: #fff; color: #0a0d14; }
.btn-light .icon { color: var(--red); }
.btn-light:hover { background: #e9eef5; transform: translateY(-1px); }

.btn-sm { white-space: nowrap; min-height: 40px; padding: 8px 16px; font-size: .9rem; }
.btn-lg { min-height: 54px; padding: 14px 26px; font-size: 1.02rem; }
.btn-xl { min-height: 60px; padding: 16px 34px; font-size: 1.1rem; }

/* ---------- Шапка ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(6, 8, 13, .78);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}

.header-row {
  display: flex;
  align-items: center;
  gap: 12px;
  height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  min-width: 0;
}
.brand img { width: auto; height: 36px; }
.brand-name { font-weight: 800; letter-spacing: .01em; font-size: 1rem; white-space: nowrap; }

.header-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  padding: 0;
  position: relative;
}
.nav-toggle span {
  position: absolute;
  left: 12px;
  right: 12px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform .25s var(--ease), top .25s var(--ease);
}
.nav-toggle span:nth-child(1) { top: 17px; }
.nav-toggle span:nth-child(2) { top: 25px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { top: 21px; transform: rotate(-45deg); }

.site-nav a {
  display: block;
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: .95rem;
  transition: color .2s;
}
.site-nav a:hover { color: var(--text); }

/* Мобильная навигация */
@media (max-width: 899px) {
  .js .nav-toggle { display: inline-block; }
  .js .site-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(8, 11, 17, .97);
    border-bottom: 1px solid var(--line);
    padding: 8px var(--gutter) 16px;
    display: none;
  }
  .js .site-nav.is-open { display: block; }
  .js .site-nav a { padding: 14px 4px; border-bottom: 1px solid var(--line); font-size: 1.05rem; }
  .js .site-nav li:last-child a { border-bottom: 0; }

  /* Без JS — ссылки строкой под шапкой */
  .no-js .header-row { flex-wrap: wrap; height: auto; padding-block: 10px; }
  .no-js .site-nav { order: 3; width: 100%; overflow-x: auto; }
  .no-js .site-nav ul { display: flex; gap: 18px; }
  .no-js .site-nav a { white-space: nowrap; padding: 6px 0; }
}

@media (max-width: 479px) { .hide-xs { display: none; } }
@media (max-width: 379px) {
  .hdr-cta { width: 42px; min-height: 42px; padding: 0; }
  .hdr-cta-text { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
  .brand-name { font-size: .92rem; }
  .brand img { height: 32px; }
}

@media (min-width: 900px) {
  .site-nav { margin-left: auto; }
  .site-nav ul { display: flex; gap: 28px; }
  .header-actions { margin-left: 20px; }
}

/* ---------- Первый экран ---------- */
.hero {
  position: relative;
  padding: clamp(32px, 7vw, 88px) 0 clamp(48px, 8vw, 104px);
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60% 50% at 10% 0%, rgba(0, 191, 255, .14), transparent 70%),
    radial-gradient(45% 45% at 95% 85%, rgba(255, 8, 17, .10), transparent 70%);
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(80% 70% at 50% 30%, #000 30%, transparent 85%);
  mask-image: radial-gradient(80% 70% at 50% 30%, #000 30%, transparent 85%);
}

.hero-grid { display: grid; gap: clamp(36px, 6vw, 56px); align-items: center; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 14px 7px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, .03);
  color: var(--text);
  font-size: .85rem;
  font-weight: 600;
}
.eyebrow .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 4px var(--red-soft);
}

h1 {
  margin-top: 20px;
  font-size: clamp(2rem, 1.2rem + 3.6vw, 3.7rem);
  line-height: 1.06;
  font-weight: 800;
  letter-spacing: -.025em;
  text-wrap: balance;
}

.lead {
  margin-top: 20px;
  max-width: 38em;
  color: var(--muted);
  font-size: clamp(1.02rem, .95rem + .35vw, 1.18rem);
  line-height: 1.6;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-note { margin-top: 14px; font-size: .88rem; color: var(--muted); }
.hero-note strong { color: var(--text); font-weight: 600; }

@media (max-width: 559px) {
  .hero-actions .btn { width: 100%; }
}

/* Композиция с логотипом */
.hero-art {
  position: relative;
  width: 100%;
  max-width: 460px;
  aspect-ratio: 1 / 1;
  margin-inline: auto;
}
.art-ring {
  position: absolute;
  inset: 8%;
  border-radius: 50%;
  border: 1px dashed rgba(255, 255, 255, .12);
  background: radial-gradient(circle at 50% 45%, rgba(0, 191, 255, .10), transparent 62%);
}
.art-ring::after {
  content: "";
  position: absolute;
  inset: 16%;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .06);
}
.art-logo {
  position: absolute;
  left: 50%;
  top: 41%;
  width: 31%;
  height: auto;
  transform: translate(-50%, -50%);
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, .6));
}

.chip {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: .35em;
  padding: 7px 12px;
  border-radius: 12px;
  background: rgba(21, 27, 38, .88);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow);
  font-size: clamp(.72rem, .64rem + .4vw, .9rem);
  font-weight: 600;
  color: var(--muted);
  white-space: nowrap;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.chip b { color: var(--text); font-weight: 800; }
.chip-1 { left: 3%; top: 12%; }
.chip-1 b { color: var(--cyan); }
.chip-2 { right: 2%; top: 20%; }
.chip-3 { left: 0; top: 40%; }
.chip-3 b { color: var(--red-text); }
.chip-4 { right: 0; top: 50%; }
.chip-5 { left: 50%; top: 0; transform: translateX(-50%); }
.chip-6 { right: 2%; top: 76%; }

.task-card {
  position: absolute;
  left: 2%;
  bottom: 2%;
  width: min(54%, 236px);
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: linear-gradient(160deg, rgba(23, 30, 42, .96), rgba(14, 19, 27, .96));
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow);
  font-size: clamp(.72rem, .66rem + .35vw, .88rem);
}
.task-head { display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-weight: 600; }
.task-tag {
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--red-soft);
  color: var(--red-text);
  font-size: .9em;
}
.task-formula {
  margin: 8px 0 6px;
  font: 700 1.2em/1.3 ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  color: var(--text);
}
.task-step { display: flex; align-items: center; gap: 8px; color: var(--muted); font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace; }
.task-step + .task-step { margin-top: 4px; }
.task-step i { width: 6px; height: 6px; border-radius: 50%; background: var(--line-strong); flex: none; }
.task-step.ok { color: var(--cyan); }
.task-step.ok i { background: var(--cyan); }

@media (min-width: 900px) {
  .hero-grid { grid-template-columns: 1.3fr .9fr; }
  .hero-art { max-width: 520px; }
}

/* Плавное «парение» элементов — только если пользователь не просил меньше анимации */
@media (prefers-reduced-motion: no-preference) {
  .chip, .task-card { animation: float 7s ease-in-out infinite; }
  .chip-2 { animation-delay: -1.5s; }
  .chip-3 { animation-delay: -3s; }
  .chip-4 { animation-delay: -4.5s; }
  .chip-5 { animation-name: float-x; animation-delay: -2s; }
  .chip-6 { animation-delay: -5.5s; }
  .task-card { animation-duration: 9s; }
  @keyframes float { 50% { translate: 0 -6px; } }
  @keyframes float-x { 50% { translate: 0 -5px; } }
}

/* ---------- Секции ---------- */
.section { padding: clamp(64px, 10vw, 120px) 0; }
.section-alt {
  background: linear-gradient(180deg, var(--bg-alt), var(--bg));
  border-block: 1px solid var(--line);
}

.section-head { max-width: 680px; margin-bottom: clamp(28px, 4vw, 48px); }
.kicker {
  display: inline-block;
  color: var(--cyan);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.kicker-red { color: var(--red-text); }

h2 {
  margin-top: 10px;
  font-size: clamp(1.7rem, 1.2rem + 2.4vw, 2.75rem);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -.02em;
  text-wrap: balance;
}
.section-sub { margin-top: 14px; color: var(--muted); font-size: 1.05rem; }

h3 { font-size: 1.15rem; line-height: 1.3; font-weight: 750; letter-spacing: -.005em; }

/* Карточки направлений */
.cards { display: grid; gap: 14px; }
.card {
  position: relative;
  padding: 22px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--line);
  transition: border-color .25s, transform .25s var(--ease);
}
.card:hover { border-color: rgba(0, 191, 255, .35); transform: translateY(-2px); }
.card-badge {
  display: inline-grid;
  place-items: center;
  min-width: 52px;
  height: 36px;
  padding: 0 10px;
  margin-bottom: 16px;
  border-radius: 10px;
  background: var(--cyan-soft);
  color: var(--cyan);
  font-weight: 800;
  font-size: .85rem;
  letter-spacing: .03em;
}
.card-badge.badge-red { background: var(--red-soft); color: var(--red-text); }
.card p { margin-top: 8px; color: var(--muted); font-size: .97rem; }

@media (min-width: 620px) { .cards { grid-template-columns: repeat(2, 1fr); gap: 16px; } }
@media (min-width: 980px) { .cards { grid-template-columns: repeat(3, 1fr); } .card { padding: 26px; } }

.notice {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 22px;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(0, 191, 255, .35);
  background: rgba(0, 191, 255, .05);
  color: var(--text);
  font-size: .97rem;
}
.notice .icon { color: var(--cyan); margin-top: 2px; }

/* Преимущества */
.features { display: grid; gap: 14px; }
.feature {
  padding: 24px 22px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .02);
  border: 1px solid var(--line);
}
.feature-num {
  display: block;
  margin-bottom: 14px;
  font-weight: 800;
  font-size: .9rem;
  color: var(--red-text);
  letter-spacing: .08em;
}
.feature:nth-child(odd) .feature-num { color: var(--cyan); }
.feature p { margin-top: 8px; color: var(--muted); }
@media (min-width: 720px) { .features { grid-template-columns: repeat(2, 1fr); gap: 16px; } .feature { padding: 30px; } }

/* Шаги */
.steps { display: grid; gap: 14px; counter-reset: step; }
.step {
  display: flex;
  gap: 18px;
  padding: 22px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--line);
}
.step-num {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  flex: none;
  border-radius: 50%;
  background: var(--cyan);
  color: var(--on-cyan);
  font-weight: 800;
  font-size: 1.1rem;
}
.step:nth-child(2) .step-num { background: linear-gradient(180deg, var(--cyan) 50%, var(--red) 50%); color: #fff; text-shadow: 0 1px 2px rgba(0, 0, 0, .6); }
.step:nth-child(3) .step-num { background: var(--red); color: #fff; }
.step p { margin-top: 6px; color: var(--muted); }
@media (min-width: 900px) {
  .steps { grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .step { flex-direction: column; padding: 28px; }
}

/* Блок отзывов */
#reviews { padding-top: 0; }
.trust {
  position: relative;
  display: grid;
  gap: 26px;
  padding: clamp(28px, 5vw, 56px);
  border-radius: calc(var(--radius) + 6px);
  overflow: hidden;
  background:
    radial-gradient(80% 120% at 100% 0%, rgba(255, 8, 17, .22), transparent 60%),
    radial-gradient(70% 120% at 0% 100%, rgba(0, 191, 255, .18), transparent 60%),
    var(--surface);
  border: 1px solid var(--line-strong);
}
.trust-copy p:not(.kicker) { margin-top: 14px; color: #c4ccd8; max-width: 36em; font-size: 1.05rem; }
.trust-action { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.trust-link { color: var(--muted); font-size: .9rem; }
@media (max-width: 559px) { .trust-action .btn { width: 100%; } .trust-action { align-items: stretch; } .trust-link { text-align: center; } }
@media (min-width: 900px) {
  .trust { grid-template-columns: 1fr auto; align-items: center; gap: 48px; }
  .trust-action { align-items: center; }
}

/* FAQ */
.faq-wrap { display: grid; gap: 8px; }
@media (min-width: 980px) { .faq-wrap { grid-template-columns: .8fr 1.2fr; gap: 48px; align-items: start; } }

.faq { display: grid; gap: 10px; }
.faq details {
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--line);
  transition: border-color .2s;
}
.faq details[open] { border-color: rgba(0, 191, 255, .3); }
.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  border-radius: var(--radius-sm);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary h3 { font-size: 1.02rem; font-weight: 700; }
.faq summary::after {
  content: "";
  width: 12px;
  height: 12px;
  flex: none;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: translateY(-3px) rotate(45deg);
  transition: transform .25s var(--ease);
}
.faq details[open] summary::after { transform: translateY(3px) rotate(-135deg); }
.faq-a { padding: 0 20px 20px; color: var(--muted); }

/* Финальный CTA */
.final { padding-top: clamp(40px, 6vw, 80px); }
.final-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: clamp(36px, 6vw, 72px) clamp(20px, 5vw, 64px);
  border-radius: calc(var(--radius) + 8px);
  background:
    radial-gradient(60% 80% at 50% 0%, rgba(0, 191, 255, .16), transparent 70%),
    linear-gradient(180deg, var(--surface-2), var(--bg));
  border: 1px solid var(--line-strong);
}
.final-box img { width: 44px; height: auto; margin-bottom: 18px; }
.final-box h2 { margin-top: 0; max-width: 16em; }
.final-box p { margin: 16px 0 28px; max-width: 36em; color: var(--muted); font-size: 1.05rem; }
@media (max-width: 559px) { .final-box .btn { width: 100%; } }

/* Подвал */
.site-footer { padding: 48px 0 28px; border-top: 1px solid var(--line); background: var(--bg-alt); }
.footer-grid { display: grid; gap: 28px; }
.footer-brand p { margin-top: 14px; color: var(--muted); max-width: 30em; font-size: .95rem; }
.footer-links { display: grid; gap: 12px; align-content: start; }
.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  min-height: 44px;
}
.footer-links a:hover { color: var(--cyan); }
.footer-links a .icon { color: var(--cyan); }
.footer-links a:nth-child(2) .icon { color: var(--red-text); }
.footer-bottom {
  display: grid;
  gap: 8px;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: #7f8999;
  font-size: .85rem;
}
@media (min-width: 760px) {
  .footer-grid { grid-template-columns: 1fr auto; }
  .footer-bottom { grid-template-columns: auto 1fr; gap: 24px; }
  .footer-bottom p:last-child { text-align: right; }
}

/* Закреплённая кнопка на мобильных */
.sticky-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  padding: 10px max(var(--gutter), env(safe-area-inset-left)) calc(10px + env(safe-area-inset-bottom)) max(var(--gutter), env(safe-area-inset-right));
  background: linear-gradient(180deg, rgba(6, 8, 13, 0), rgba(6, 8, 13, .92) 35%);
  transform: translateY(110%);
  transition: transform .3s var(--ease);
  pointer-events: none;
}
.sticky-cta .btn { width: 100%; pointer-events: auto; }
.sticky-cta.is-visible { transform: none; }
.sticky-cta.is-visible .btn { pointer-events: auto; }
.sticky-cta:not(.is-visible) .btn { pointer-events: none; visibility: hidden; transition: visibility 0s .3s; }
@media (min-width: 760px) { .sticky-cta { display: none !important; } }

/* Появление при прокрутке */
@media (prefers-reduced-motion: no-preference) {
  .js .reveal { opacity: 0; transform: translateY(14px); transition: opacity .5s var(--ease), transform .5s var(--ease); }
  .js .reveal.is-in { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}