/* ==========================================================================
   Onyx.kz — design system
   Светлый нейтральный фон · графитовый текст · оранжевый как premium accent
   ========================================================================== */

:root {
  /* Поверхности */
  --bg:        #ffffff;
  --bg-soft:   #f7f7f5;
  --bg-mute:   #f0f0ed;
  --dark:      #0d0e0f;
  --dark-soft: #17191b;

  /* Текст */
  --ink:   #0e0f10;
  --ink-2: #4c4f53;
  --ink-3: #74787d;
  --ink-on-dark:   #f4f4f2;
  --ink-on-dark-2: #9a9d9f;

  /* Акцент */
  --accent:      #ff5a1f;
  --accent-deep: #e04708;
  --accent-soft: #fff1ea;

  /* Линии */
  --line:        #e5e5e1;
  --line-strong: #d2d2cd;
  --line-dark:   #26282a;

  /* Метрики */
  --wrap: 1320px;
  --gut: 28px;
  --radius: 8px;
  --radius-lg: 18px;
  --shadow-sm: 0 2px 10px -4px rgba(14, 15, 16, 0.08);
  --shadow-md: 0 18px 40px -22px rgba(14, 15, 16, 0.28);
  --shadow-lg: 0 30px 60px -24px rgba(14, 15, 16, 0.32);

  /* Типографика */
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --display: "Inter Tight", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Движение */
  --ease: cubic-bezier(0.22, 0.68, 0.2, 1);
  --dur: 0.42s;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  font-feature-settings: "cv05" 1, "ss01" 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.nav-open { overflow: hidden; }

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

[hidden] { display: none !important; }

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

h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 500;
  letter-spacing: -0.032em;
  line-height: 1.04;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0; text-wrap: pretty; }

ul { margin: 0; padding: 0; list-style: none; }

::selection { background: var(--accent); color: #fff; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* --------------------------------------------------------------------------
   Каркас
   -------------------------------------------------------------------------- */

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gut);
}

.section { padding: 120px 0; }
.section--tight { padding: 84px 0; }
.section--soft { background: var(--bg-soft); }
.section--dark { background: var(--dark); color: var(--ink-on-dark); }

.rule { height: 1px; background: var(--line); border: 0; margin: 0; }

/* Заголовок секции */
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--accent);
  flex: none;
}
.section--dark .eyebrow { color: var(--ink-on-dark-2); }

.sec-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
  gap: 40px 60px;
  align-items: end;
  margin-bottom: 56px;
}
.sec-head h2 {
  font-size: clamp(32px, 4vw, 54px);
  margin-top: 18px;
}
.sec-head .lead {
  color: var(--ink-2);
  font-size: 17px;
  line-height: 1.62;
  max-width: 46ch;
}
.section--dark .sec-head .lead { color: var(--ink-on-dark-2); }

/* --------------------------------------------------------------------------
   Кнопки
   -------------------------------------------------------------------------- */

.btn {
  --btn-h: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: var(--btn-h);
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--sans);
  font-size: 14.5px;
  font-weight: 550;
  letter-spacing: -0.005em;
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
              border-color var(--dur) var(--ease), transform 0.18s var(--ease);
}
.btn:active { transform: translateY(1px); }

.btn svg { flex: none; transition: transform var(--dur) var(--ease); }
.btn:hover svg { transform: translateX(4px); }

.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 12px 28px -12px rgba(255, 90, 31, 0.55); }
.btn-primary:hover { background: var(--accent-deep); box-shadow: 0 16px 34px -12px rgba(224, 71, 8, 0.6); transform: translateY(-1px); }

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

.btn-ghost { border-color: var(--line-strong); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink); background: var(--ink); color: #fff; }

.section--dark .btn-ghost { border-color: var(--line-dark); color: var(--ink-on-dark); }
.section--dark .btn-ghost:hover { background: #fff; color: var(--ink); border-color: #fff; }

.btn-sm { --btn-h: 42px; padding: 0 18px; font-size: 13.5px; }
.btn-lg { --btn-h: 58px; padding: 0 32px; font-size: 15.5px; }
.btn-block { width: 100%; }

/* Текстовая ссылка со стрелкой */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 14.5px;
  font-weight: 550;
  color: var(--ink);
  padding-bottom: 3px;
  border-bottom: 1px solid var(--line-strong);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.link-arrow svg { transition: transform var(--dur) var(--ease); }
.link-arrow:hover { color: var(--accent); border-color: var(--accent); }
.link-arrow:hover svg { transform: translateX(4px); }

/* --------------------------------------------------------------------------
   Шапка
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.site-header.is-stuck { border-bottom-color: var(--line); }

.header-inner {
  height: 74px;
  display: flex;
  align-items: center;
  gap: 36px;
}

.logo {
  font-family: var(--display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.045em;
  display: inline-flex;
  align-items: baseline;
  gap: 1px;
  flex: none;
}
.logo i { font-style: normal; color: var(--accent); }

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.site-nav > a, .site-nav > button {
  font: inherit;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-2);
  background: none;
  border: 0;
  padding: 9px 14px;
  border-radius: var(--radius);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.site-nav > a:hover, .site-nav > button:hover,
.site-nav > [aria-expanded="true"] { color: var(--ink); background: var(--bg-mute); }
.site-nav > a.is-current { color: var(--ink); }
.site-nav > a.is-current::after {
  content: "";
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--accent);
  margin-left: 2px;
}
.site-nav .chev { transition: transform 0.25s var(--ease); }
.site-nav > [aria-expanded="true"] .chev { transform: rotate(180deg); }

.header-right { display: flex; align-items: center; gap: 14px; flex: none; }

/* Переключатель языка */
.langs { display: flex; align-items: center; gap: 2px; }
.langs a {
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink-3);
  padding: 6px 7px;
  border-radius: 3px;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.langs a:hover { color: var(--ink); background: var(--bg-mute); }
.langs a.is-active { color: var(--accent); }

/* Бургер */
.burger {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: transparent;
  cursor: pointer;
  padding: 0;
  position: relative;
}
.burger span {
  position: absolute;
  left: 12px;
  width: 16px; height: 1.5px;
  background: var(--ink);
  transition: transform 0.3s var(--ease), opacity 0.2s var(--ease);
}
.burger span:nth-child(1) { top: 16px; }
.burger span:nth-child(2) { top: 21px; }
.burger span:nth-child(3) { top: 26px; }
body.nav-open .burger span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
body.nav-open .burger span:nth-child(2) { opacity: 0; }
body.nav-open .burger span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* --------------------------------------------------------------------------
   Mega-menu
   -------------------------------------------------------------------------- */

.mega {
  position: absolute;
  left: 0; right: 0;
  top: 100%;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 24px 48px -28px rgba(14, 15, 16, 0.22);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease), visibility 0.28s;
}
.mega.is-open { opacity: 1; visibility: visible; transform: none; }

.mega-inner {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 48px;
  padding: 40px 0 44px;
}

.mega-aside h3 { font-size: 24px; margin-bottom: 12px; }
.mega-aside p { font-size: 14px; color: var(--ink-2); line-height: 1.6; margin-bottom: 22px; }

.mega-cats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
}
.mega-cat > .mega-cat-title {
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--accent);
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.mega-cat > .mega-cat-note {
  font-size: 12.5px;
  color: var(--ink-3);
  line-height: 1.5;
  margin: -6px 0 14px;
}
.mega-link {
  display: block;
  padding: 8px 10px 8px 10px;
  margin: 0 -10px;
  border-radius: var(--radius);
  transition: background 0.2s var(--ease);
}
.mega-link strong {
  display: block;
  font-size: 14.5px;
  font-weight: 550;
  letter-spacing: -0.01em;
  transition: color 0.2s var(--ease);
}
.mega-link span { display: block; font-size: 12.5px; color: var(--ink-3); line-height: 1.45; margin-top: 2px; }
.mega-link:hover { background: var(--bg-soft); }
.mega-link:hover strong { color: var(--accent); }

/* --------------------------------------------------------------------------
   Мобильная навигация
   -------------------------------------------------------------------------- */

.mobile-panel {
  position: fixed;
  inset: 74px 0 0;
  z-index: 88;
  background: var(--bg);
  padding: 24px var(--gut) 40px;
  overflow-y: auto;
  transform: translateY(-8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s;
}
body.nav-open .mobile-panel { opacity: 1; visibility: visible; transform: none; }
.mobile-panel > a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--display);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.03em;
}
.mobile-panel .m-group-title {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 28px 0 8px;
}
.mobile-panel .m-sub {
  display: block;
  padding: 10px 0;
  font-size: 15px;
  color: var(--ink-2);
  border-bottom: 1px solid var(--line);
}
.mobile-cta { margin-top: 28px; display: grid; gap: 10px; }

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */

.hero {
  position: relative;
  padding: 84px 0 0;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -220px;
  right: -160px;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-soft), transparent 68%);
  pointer-events: none;
  z-index: 0;
}
.hero .wrap { position: relative; z-index: 1; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: 56px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 7px 15px 7px 11px;
  background: var(--bg);
}
.hero-badge .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(255, 90, 31, 0.5);
  animation: pulse 2.6s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(255, 90, 31, 0.45); }
  70%  { box-shadow: 0 0 0 8px rgba(255, 90, 31, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 90, 31, 0); }
}

.hero h1 {
  font-size: clamp(40px, 6.1vw, 82px);
  margin: 26px 0 0;
  letter-spacing: -0.042em;
}
.hero h1 .accent { color: var(--accent); }
.hero h1 .mark { position: relative; white-space: nowrap; }
.hero h1 .mark::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0.06em;
  height: 0.055em;
  background: var(--accent);
  transform-origin: left;
  animation: markIn 0.9s 0.5s var(--ease) both;
}
@keyframes markIn { from { transform: scaleX(0); } to { transform: scaleX(1); } }

.hero-sub {
  margin-top: 26px;
  font-size: 17.5px;
  line-height: 1.62;
  color: var(--ink-2);
  max-width: 50ch;
}
.hero-actions { margin-top: 36px; display: flex; flex-wrap: wrap; gap: 12px; }
.hero-note {
  margin-top: 22px;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--ink-3);
}
.hero-note b { color: var(--ink-2); font-weight: 550; }

/* Абстрактная схема системы */
.hero-visual { position: relative; aspect-ratio: 1 / 0.92; }
.hero-visual svg { width: 100%; height: 100%; overflow: visible; }
.hv-line {
  fill: none;
  stroke: var(--line-strong);
  stroke-width: 1;
  stroke-dasharray: 3 3;
}
.hv-flow {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-dasharray: 26 240;
  animation: flow 4.2s linear infinite;
}
@keyframes flow { to { stroke-dashoffset: -266; } }
.hv-card {
  fill: #fff;
  stroke: var(--line);
  stroke-width: 1;
}
.hv-chip { fill: var(--bg-mute); }
.hv-chip-a { fill: var(--accent); }
.hv-text { font-family: var(--mono); font-size: 8.4px; fill: var(--ink-3); letter-spacing: 0.06em; }
.hv-text-strong { font-family: var(--sans); font-size: 10.5px; font-weight: 600; fill: var(--ink); letter-spacing: -0.01em; }
.hv-node { fill: #fff; stroke: var(--line-strong); }
.hv-node-dot { fill: var(--accent); }
.hv-float { animation: floaty 7s ease-in-out infinite; }
.hv-float-2 { animation: floaty 8.5s ease-in-out 0.6s infinite; }
.hv-float-3 { animation: floaty 6.4s ease-in-out 1.2s infinite; }
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-7px); }
}

/* Полоса статистики */
.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  margin-top: 84px;
}
.stat { padding: 30px 0 0; border-right: 1px solid var(--line); padding-right: 24px; }
.stat:last-child { border-right: 0; }
.stat .v {
  font-family: var(--display);
  font-size: clamp(28px, 3.2vw, 42px);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1;
}
.stat .l { margin-top: 10px; font-size: 13.5px; color: var(--ink-3); line-height: 1.45; }
.stat::before {
  content: "";
  display: block;
  width: 22px; height: 2px;
  background: var(--accent);
  margin-bottom: 20px;
}

/* --------------------------------------------------------------------------
   Карточки продуктов
   -------------------------------------------------------------------------- */

.cat-block { margin-top: 72px; }
.cat-block:first-of-type { margin-top: 0; }
.cat-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--ink);
  margin-bottom: 0;
}
.cat-head h3 { font-size: 23px; letter-spacing: -0.03em; }
.cat-head .n { font-family: var(--mono); font-size: 11px; color: var(--accent); letter-spacing: 0.1em; }
.cat-head p { font-size: 14px; color: var(--ink-3); margin-left: auto; max-width: 42ch; text-align: right; }

.prod-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.prod-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.prod-grid--1 { grid-template-columns: minmax(0, 1fr); }
.prod-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px 28px 30px;
  display: flex;
  flex-direction: column;
  min-height: 300px;
  position: relative;
  background: var(--bg);
  box-shadow: var(--shadow-sm);
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.prod-card::after {
  content: "";
  position: absolute;
  left: 24px; right: 24px; top: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease);
}
.prod-card:hover {
  background: var(--bg-soft);
  border-color: var(--line-strong);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.prod-card:hover::after { transform: scaleX(1); }
.prod-card .idx {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0.1em;
  margin-bottom: 22px;
}
.prod-card h4 {
  font-family: var(--display);
  font-size: 21px;
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.15;
  transition: color var(--dur) var(--ease);
}
.prod-card:hover h4 { color: var(--accent); }
.prod-card .desc { margin-top: 12px; font-size: 14.5px; color: var(--ink-2); line-height: 1.58; }
.prod-card .meta {
  margin-top: 18px;
  display: grid;
  gap: 6px;
  font-size: 13px;
  color: var(--ink-3);
}
.prod-card .meta b { color: var(--ink); font-weight: 550; }
.prod-card .foot {
  margin-top: auto;
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.prod-card .price {
  font-family: var(--display);
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.025em;
}
.prod-card .go {
  width: 34px; height: 34px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--ink-2);
  transition: all var(--dur) var(--ease);
}
.prod-card:hover .go { background: var(--accent); border-color: var(--accent); color: #fff; transform: rotate(-45deg); }

/* --------------------------------------------------------------------------
   Кейсы
   -------------------------------------------------------------------------- */

.case-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 40px;
}
.case-filters button {
  font: inherit;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink-2);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 8px 16px;
  cursor: pointer;
  transition: all 0.24s var(--ease);
}
.case-filters button:hover { border-color: var(--ink-3); color: var(--ink); }
.case-filters button.is-active { background: var(--ink); border-color: var(--ink); color: #fff; }

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}
.case-card {
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.case-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-4px);
  box-shadow: 0 22px 44px -30px rgba(14, 15, 16, 0.3);
}
.case-thumb {
  aspect-ratio: 16 / 10;
  position: relative;
  overflow: hidden;
  background: var(--bg-mute);
}
.case-thumb svg,
.case-thumb img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; object-position: top;
  transition: transform 0.7s var(--ease);
}
.case-card:hover .case-thumb svg,
.case-card:hover .case-thumb img { transform: scale(1.045); }
.case-body { padding: 26px 26px 28px; }
.case-body .top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.case-body .top .n { color: var(--accent); }
.case-body h3 { font-size: 25px; margin-top: 14px; transition: color var(--dur) var(--ease); }
.case-card:hover h3 { color: var(--accent); }
.case-body p { margin-top: 10px; font-size: 14.5px; color: var(--ink-2); line-height: 1.58; }
.case-tags {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}
.case-tags span {
  font-size: 12px;
  color: var(--ink-2);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 4px 11px;
}

/* --------------------------------------------------------------------------
   Пакеты
   -------------------------------------------------------------------------- */

.packages {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.pack {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 34px 30px 34px;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  position: relative;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.pack:hover { border-color: var(--line-strong); transform: translateY(-3px); }
.pack.is-featured { border-color: var(--ink); }
.pack .badge {
  position: absolute;
  top: -12px; left: 30px;
  background: var(--accent);
  color: #fff;
  font-family: var(--mono);
  font-size: 10px;
  line-height: 1;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 7px 12px 8px;
  border-radius: 100px;
}
.pack h3 { font-size: 26px; }
.pack .price {
  margin-top: 16px;
  font-family: var(--display);
  font-size: 30px;
  font-weight: 500;
  letter-spacing: -0.04em;
}
.pack .note { margin-top: 6px; font-size: 13.5px; color: var(--ink-3); }
.pack ul { margin-top: 26px; display: grid; gap: 11px; }
.pack li {
  position: relative;
  padding-left: 24px;
  font-size: 14.5px;
  color: var(--ink-2);
  line-height: 1.5;
}
.pack li::before {
  content: "";
  position: absolute;
  left: 2px; top: 9px;
  width: 9px; height: 2px;
  background: var(--accent);
}
.pack .btn { margin-top: 30px; }
.pack .spacer { flex: 1; }

/* --------------------------------------------------------------------------
   Калькулятор
   -------------------------------------------------------------------------- */

.calc {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg);
}
.calc-left { padding: 44px 44px 48px; background: var(--bg-soft); border-right: 1px solid var(--line); }
.calc-left h2 { font-size: clamp(26px, 3vw, 38px); margin-top: 18px; }
.calc-left .lead { margin-top: 16px; font-size: 15.5px; color: var(--ink-2); line-height: 1.6; max-width: 40ch; }
.calc-out {
  margin-top: 36px;
  padding-top: 26px;
  border-top: 1px solid var(--line-strong);
}
.calc-out .lbl { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); }
.calc-out .money {
  font-family: var(--display);
  font-size: clamp(34px, 4.4vw, 52px);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.05;
  margin-top: 12px;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.calc-out .term { margin-top: 8px; font-size: 14px; color: var(--ink-2); }
.calc-right { padding: 44px; display: grid; gap: 22px; align-content: start; }

.field { display: block; }
.field > span {
  display: block;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 9px;
}
.field input, .field select, .field textarea {
  width: 100%;
  font: inherit;
  font-size: 15px;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 13px 14px;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
  -webkit-appearance: none;
  appearance: none;
}
.field textarea { resize: vertical; min-height: 96px; line-height: 1.55; }
.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5 11 1.5' stroke='%238c9095' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 38px;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 90, 31, 0.14);
}

.checks { display: grid; gap: 10px; }
.check {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 14.5px;
  color: var(--ink-2);
  cursor: pointer;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.check:hover { border-color: var(--line-strong); background: var(--bg-soft); }
.check input { position: absolute; opacity: 0; pointer-events: none; }
.check .box {
  width: 17px; height: 17px;
  flex: none;
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  display: grid;
  place-items: center;
  transition: all 0.2s var(--ease);
}
.check .box svg { opacity: 0; transform: scale(0.6); transition: all 0.2s var(--ease); }
.check input:checked + .box { background: var(--accent); border-color: var(--accent); }
.check input:checked + .box svg { opacity: 1; transform: none; }
.check:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); color: var(--ink); }

/* --------------------------------------------------------------------------
   Внутренние страницы
   -------------------------------------------------------------------------- */

.page-hero { padding: 72px 0 64px; border-bottom: 1px solid var(--line); }
.page-hero .crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 30px;
  flex-wrap: wrap;
}
.page-hero .crumbs a:hover { color: var(--accent); }
.page-hero .crumbs .sep { color: var(--line-strong); }
.page-hero h1 { font-size: clamp(36px, 5.4vw, 68px); }
.page-hero .lead {
  margin-top: 24px;
  font-size: 18px;
  line-height: 1.6;
  color: var(--ink-2);
  max-width: 58ch;
}
.page-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 56px;
  align-items: end;
}
.page-hero .actions { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 12px; }

.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  border-top: 1px solid var(--line);
}
.fact { padding: 22px 22px 22px 0; border-right: 1px solid var(--line); }
.fact:last-child { border-right: 0; }
.fact .k { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); }
.fact .v {
  margin-top: 9px;
  font-family: var(--display);
  font-size: 21px;
  font-weight: 500;
  letter-spacing: -0.03em;
}
.fact .v.accent { color: var(--accent); }

/* Двухколоночный блок «проблема / решение» */
.split-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 56px;
}
.split-2 h2 { font-size: clamp(26px, 3.2vw, 40px); margin-top: 18px; }
.split-2 p { margin-top: 18px; font-size: 16.5px; line-height: 1.65; color: var(--ink-2); }

.pain-list { display: grid; gap: 0; margin-top: 10px; }
.pain-list li {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink-2);
}
.pain-list li .x {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  padding-top: 4px;
  flex: none;
  letter-spacing: 0.08em;
}

/* Сетка возможностей */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.feature {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 28px 34px;
  background: var(--bg);
  box-shadow: var(--shadow-sm);
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.feature:hover { background: var(--bg-soft); border-color: var(--line-strong); transform: translateY(-3px); box-shadow: var(--shadow-md); }
.feature .n { font-family: var(--mono); font-size: 11px; color: var(--accent); letter-spacing: 0.1em; }
.feature h4 { font-size: 18px; margin-top: 16px; letter-spacing: -0.025em; }
.feature p { margin-top: 10px; font-size: 14.5px; color: var(--ink-2); line-height: 1.58; }

/* Шаги процесса */
.steps { display: grid; gap: 0; border-top: 1px solid var(--line); }
.step {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr) minmax(0, 1.3fr);
  gap: 32px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
  transition: background var(--dur) var(--ease);
}
.step:hover { background: var(--bg-soft); }
.step .n {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--accent);
  padding-top: 5px;
}
.step h4 { font-size: 21px; letter-spacing: -0.028em; }
.step p { font-size: 15.5px; color: var(--ink-2); line-height: 1.6; padding-top: 2px; }

/* Список интеграций / технологий */
.chips { display: flex; flex-wrap: wrap; gap: 9px; }
.chip {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 7px 14px;
  background: var(--bg);
  transition: all 0.24s var(--ease);
}
a.chip:hover, .chip:hover { border-color: var(--accent); color: var(--accent); }
.section--dark .chip { border-color: var(--line-dark); color: var(--ink-on-dark-2); background: transparent; }

/* FAQ */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none;
  cursor: pointer;
  padding: 26px 44px 26px 0;
  position: relative;
  font-family: var(--display);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 500;
  letter-spacing: -0.026em;
  line-height: 1.35;
  transition: color 0.24s var(--ease);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { color: var(--accent); }
.faq summary::after,
.faq summary::before {
  content: "";
  position: absolute;
  right: 8px; top: 50%;
  background: var(--accent);
  transition: transform 0.3s var(--ease);
}
.faq summary::before { width: 14px; height: 1.5px; margin-top: -0.75px; }
.faq summary::after { width: 1.5px; height: 14px; margin-top: -7px; margin-right: 6.25px; }
.faq details[open] summary::after { transform: rotate(90deg); }
.faq .answer { padding: 0 12% 30px 0; font-size: 16px; line-height: 1.66; color: var(--ink-2); }
.faq details[open] .answer { animation: fadeUp 0.4s var(--ease) both; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(-5px); } to { opacity: 1; transform: none; } }

/* --------------------------------------------------------------------------
   Экспертиза
   -------------------------------------------------------------------------- */

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.post-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 28px 32px;
  display: flex;
  flex-direction: column;
  min-height: 280px;
  background: var(--bg);
  box-shadow: var(--shadow-sm);
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.post-card:hover { background: var(--bg-soft); border-color: var(--line-strong); transform: translateY(-4px); box-shadow: var(--shadow-md); }
.post-card .top {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.post-card .top .cat { color: var(--accent); }
.post-card h3 { font-size: 21px; margin-top: 20px; letter-spacing: -0.03em; transition: color var(--dur) var(--ease); }
.post-card:hover h3 { color: var(--accent); }
.post-card p { margin-top: 12px; font-size: 14.5px; color: var(--ink-2); line-height: 1.58; }
.post-card .more { margin-top: auto; padding-top: 24px; }

/* Тело статьи */
.article-body {
  max-width: 720px;
  font-size: 17.5px;
  line-height: 1.72;
  color: #2a2d30;
}
.article-body > * + * { margin-top: 26px; }
.article-body h2 {
  font-size: clamp(24px, 2.8vw, 32px);
  margin-top: 52px;
  letter-spacing: -0.03em;
  color: var(--ink);
}
.article-body h3 { font-size: 21px; margin-top: 38px; color: var(--ink); }
.article-body ul { display: grid; gap: 12px; }
.article-body ul li { position: relative; padding-left: 26px; }
.article-body ul li::before {
  content: "";
  position: absolute;
  left: 2px; top: 13px;
  width: 10px; height: 2px;
  background: var(--accent);
}
.article-body strong { font-weight: 600; color: var(--ink); }
.article-body .callout {
  border-left: 2px solid var(--accent);
  background: var(--bg-soft);
  padding: 24px 28px;
  font-size: 16.5px;
  line-height: 1.65;
}
.article-body a { color: var(--accent-deep); border-bottom: 1px solid rgba(224, 71, 8, 0.3); }
.article-body a:hover { border-color: var(--accent-deep); }

/* --------------------------------------------------------------------------
   Компания
   -------------------------------------------------------------------------- */

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.value {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 34px 30px 38px;
  background: var(--bg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.value:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--line-strong); }
.value .n { font-family: var(--mono); font-size: 11px; color: var(--accent); letter-spacing: 0.1em; }
.value h4 { font-size: 20px; margin-top: 18px; letter-spacing: -0.028em; }
.value p { margin-top: 12px; font-size: 15px; color: var(--ink-2); line-height: 1.6; }

.req-table { border-top: 1px solid var(--line-dark); }
.req-row {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 24px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line-dark);
  font-size: 15.5px;
}
.req-row .k { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-on-dark-2); padding-top: 4px; }
.req-row .v { color: var(--ink-on-dark); }

/* --------------------------------------------------------------------------
   Контакты и форма
   -------------------------------------------------------------------------- */

.contact-box {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.contact-info { padding: 46px 44px 50px; background: var(--bg-soft); border-right: 1px solid var(--line); }
.contact-info h2 { font-size: clamp(26px, 3vw, 38px); margin-top: 18px; }
.contact-info .lead { margin-top: 16px; font-size: 15.5px; color: var(--ink-2); line-height: 1.6; max-width: 36ch; }
.contact-direct { margin-top: 36px; display: grid; gap: 14px; }
.contact-direct .row {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  transition: color 0.24s var(--ease);
}
.contact-direct .row:hover { color: var(--accent); }
.contact-direct .row .ic { color: var(--accent); flex: none; }
.contact-direct .row .txt { font-size: 16.5px; font-weight: 500; letter-spacing: -0.01em; }
.contact-form { padding: 46px 44px 50px; display: grid; gap: 20px; align-content: start; }
.form-note { font-size: 12.5px; color: var(--ink-3); line-height: 1.5; }
.form-status {
  font-size: 14px;
  padding: 13px 15px;
  border-radius: var(--radius);
  display: none;
  line-height: 1.5;
}
.form-status.is-ok { display: block; background: var(--accent-soft); color: var(--accent-deep); border: 1px solid rgba(255, 90, 31, 0.28); }
.form-status.is-err { display: block; background: #fdf2f2; color: #a52020; border: 1px solid #f0d3d3; }

/* CTA-полоса */
.cta-band { padding: 96px 0; }
.cta-band .inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 48px;
  align-items: center;
}
.cta-band h2 { font-size: clamp(30px, 4vw, 52px); }
.cta-band p { margin-top: 18px; font-size: 17px; color: var(--ink-on-dark-2); max-width: 48ch; line-height: 1.6; }
.cta-band .actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* --------------------------------------------------------------------------
   Подвал
   -------------------------------------------------------------------------- */

.site-footer { background: var(--dark); color: var(--ink-on-dark); padding: 72px 0 34px; }
.site-footer .cols {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 44px;
  padding-bottom: 52px;
  border-bottom: 1px solid var(--line-dark);
}
.site-footer .logo { color: var(--ink-on-dark); }
.site-footer .about { margin-top: 18px; font-size: 14.5px; color: var(--ink-on-dark-2); line-height: 1.6; max-width: 34ch; }
.site-footer .col-title {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-on-dark-2);
  margin-bottom: 18px;
}
.site-footer .links { display: grid; gap: 11px; }
.site-footer .links a { font-size: 14.5px; color: var(--ink-on-dark); opacity: 0.82; transition: opacity 0.2s var(--ease), color 0.2s var(--ease); }
.site-footer .links a:hover { opacity: 1; color: var(--accent); }
.footer-bottom {
  padding-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--ink-on-dark-2);
}

/* --------------------------------------------------------------------------
   Анимации появления
   -------------------------------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  transition-delay: calc(var(--i, 0) * 65ms);
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* --------------------------------------------------------------------------
   Адаптив
   -------------------------------------------------------------------------- */

@media (max-width: 1180px) {
  .mega-cats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px 32px; }
  .mega-inner { grid-template-columns: 210px minmax(0, 1fr); gap: 36px; }
  .prod-grid, .feature-grid, .post-grid, .value-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 1024px) {
  :root { --gut: 22px; }
  .section { padding: 88px 0; }
  .site-nav, .header-right .btn { display: none; }
  .burger { display: block; }
  .header-right { margin-left: auto; }
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-visual { max-width: 560px; margin: 0 auto; width: 100%; }
  .page-hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .sec-head { grid-template-columns: 1fr; align-items: start; }
  .split-2 { grid-template-columns: 1fr; gap: 36px; }
  .calc { grid-template-columns: 1fr; }
  .calc-left { border-right: 0; border-bottom: 1px solid var(--line); }
  .calc-left, .calc-right { padding: 34px 28px 38px; }
  .contact-box { grid-template-columns: 1fr; }
  .contact-info { border-right: 0; border-bottom: 1px solid var(--line); }
  .contact-info, .contact-form { padding: 34px 28px 38px; }
  .packages { grid-template-columns: 1fr; }
  .cta-band .inner { grid-template-columns: 1fr; gap: 32px; }
  .site-footer .cols { grid-template-columns: 1fr 1fr; gap: 36px; }
  .step { grid-template-columns: 48px minmax(0, 1fr); gap: 16px 20px; }
  .step p { grid-column: 2; }
  .req-row { grid-template-columns: 1fr; gap: 6px; }
}

@media (max-width: 720px) {
  .section { padding: 68px 0; }
  .hero { padding-top: 56px; }
  .hero-visual { display: none; }
  .hero-grid { gap: 0; }
  .stats { margin-top: 48px; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat { border-right: 0; padding-right: 16px; padding-bottom: 26px; border-bottom: 1px solid var(--line); }
  .stat:nth-child(odd) { border-right: 1px solid var(--line); padding-right: 20px; }
  .prod-grid, .feature-grid, .post-grid, .value-grid, .case-grid { grid-template-columns: 1fr; }
  .case-grid { gap: 20px; }
  .cat-head { flex-wrap: wrap; }
  .cat-head p { margin-left: 0; text-align: left; }
  .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fact { padding: 18px 16px 18px 0; }
  .fact:nth-child(2n) { border-right: 0; }
  .site-footer .cols { grid-template-columns: 1fr; gap: 30px; }
  .faq .answer { padding-right: 0; }
  .article-body { font-size: 16.5px; }
  .prod-card { min-height: 0; padding: 26px 22px; }
}