/* =========================================================
   DNK Center — главная страница
   Дизайн-система по ТЗ (TZ_glavnaya_DNK_Center_final, раздел 4)
   ========================================================= */

:root {
  /* Палитра из ТЗ 29.10.2026 (главная, животные, ДНК-профили, судебная экспертиза — единая дизайн-система) */
  --primary: #20664F;        /* основной изумруд: кнопки, ссылки, иконки */
  --primary-dark: #193D33;   /* заголовки */
  --accent: #20664F;         /* основные CTA */
  --accent-hover: #164A3A;   /* hover кнопок */
  --accent-active: #123D30;
  --accent-light: #A9C8B8;   /* поддерживающий оттенок */
  --menu-hover: #A9C8B8;
  --background: #F5F9F6;     /* мягкий фон секций и карточек */
  --text-main: #1A1A1A;
  --text-secondary: #52675D; /* вспомогательный текст */
  --border: #E0EBE4;         /* рамки */
  --white: #FFFFFF;
  --tint: #E5F1E9;           /* фон hover карточек */
  --warn: #9A6A12;
  --warn-bg: #FBF6EA;
  --warn-border: #F0E2C0;
  --danger: #C2563A;

  /* UI */
  --radius: 16px;
  --radius-sm: 12px;
  --shadow: 0 8px 24px rgba(0, 0, 0, .04);
  --shadow-hover: 0 12px 28px rgba(0, 0, 0, .08);
  --shadow-menu: 0 10px 30px rgba(0, 0, 0, .08);
  --ease: .25s ease;

  --container: 1200px;
  --gutter: 24px;
  --section-y: 72px;
  --header-h: 76px;
}

@media (max-width: 768px) {
  :root { --gutter: 16px; --section-y: 44px; --header-h: 64px; }
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-main);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { font-weight: 600; letter-spacing: -0.02em; line-height: 1.2; color: var(--primary-dark); }
h2 { font-size: clamp(28px, 1.2vw + 20px, 32px); }
h3 { font-size: 20px; line-height: 1.3; }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.ico { width: 24px; height: 24px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.ico--sm { width: 18px; height: 18px; }

.container { width: 100%; max-width: calc(var(--container) + var(--gutter) * 2); margin: 0 auto; padding: 0 var(--gutter); }
.text-accent { color: var(--primary); }

.skip-link { position: absolute; left: -9999px; top: 8px; z-index: 200; background: var(--white); padding: 8px 16px; border-radius: 8px; }
.skip-link:focus { left: 8px; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 48px; padding: 0 24px;
  border-radius: var(--radius-sm); border: 1px solid transparent;
  font-size: 16px; font-weight: 600; line-height: 1; white-space: nowrap;
  transition: background-color var(--ease), border-color var(--ease), color var(--ease), transform var(--ease), box-shadow var(--ease);
}
.btn--sm { height: 40px; padding: 0 18px; font-size: 15px; }
.btn--lg { height: 56px; padding: 0 32px; font-size: 17px; }
.btn--block { width: 100%; }

.btn--primary { background: var(--accent); color: var(--white); box-shadow: 0 6px 16px rgba(32, 102, 79, .22); }
.btn--primary:hover { background: var(--accent-hover); transform: translateY(-1px); }
.btn--primary:active { background: var(--accent-active); transform: none; }

.btn--secondary { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn--secondary:hover { background: var(--background); }

.link { display: inline-flex; align-items: center; gap: 6px; color: var(--primary); font-weight: 500; transition: gap var(--ease), color var(--ease); }
.link:hover { gap: 10px; color: var(--primary-dark); }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border: 0; background: transparent; border-radius: var(--radius-sm); color: var(--text-main);
  transition: background-color var(--ease), color var(--ease), border-color var(--ease);
}
.icon-btn:hover { background: var(--background); }
.icon-btn--round { border: 1px solid var(--border); background: var(--white); border-radius: 50%; color: var(--primary); }
.icon-btn--round:hover { border-color: var(--primary); background: var(--white); }

.icon-badge {
  display: inline-flex; align-items: center; justify-content: center; flex: none;
  width: 48px; height: 48px; border-radius: var(--radius-sm);
  background: var(--tint); color: var(--primary);
}
.icon-badge--sm { width: 36px; height: 36px; border-radius: 10px; }
.icon-badge--lg { width: 56px; height: 56px; }
.icon-badge--lg .ico { width: 28px; height: 28px; }
.icon-badge--inv { background: rgba(255, 255, 255, .1); color: var(--white); }

/* ---------- Logo ---------- */
.logo { display: inline-flex; align-items: center; gap: 10px; white-space: nowrap; flex: none; font-size: 20px; letter-spacing: -0.02em; color: var(--primary-dark); }
.logo__mark { display: inline-flex; width: 36px; height: 36px; border-radius: 10px; background: var(--primary); }
.logo__mark svg { width: 100%; height: 100%; fill: none; stroke: var(--white); stroke-width: 2; stroke-linecap: round; }
.logo__text { font-weight: 500; }
.logo__text b { font-weight: 700; }

/* ---------- Header ---------- */
.header {
  position: fixed; inset: 0 0 auto; z-index: 50; height: var(--header-h);
  transition: background-color var(--ease), box-shadow var(--ease), border-color var(--ease);
  border-bottom: 1px solid transparent;
}
.header--scrolled { background: var(--white); box-shadow: 0 4px 20px rgba(0, 0, 0, .05); border-bottom-color: var(--border); }
.header__inner { height: 100%; display: flex; align-items: center; gap: 20px; }
.nav { margin-right: auto; }
.nav__list { display: flex; align-items: center; gap: 4px; }
.nav__link {
  display: inline-flex; align-items: center; gap: 4px; height: 40px; padding: 0 8px;
  border: 0; background: none; border-radius: 10px;
  font-size: 15px; font-weight: 500; color: var(--text-main); white-space: nowrap;
  transition: color var(--ease), background-color var(--ease);
}
.nav__link:hover, .nav__item--mega.is-open .nav__link { color: var(--primary); }
.nav__trigger .ico { transition: transform var(--ease); }
.nav__item--mega.is-open .nav__trigger .ico { transform: rotate(180deg); }

.header__actions { display: flex; align-items: center; gap: 10px; }
/* С пунктом «Вопросы и ответы» и лупой (тикет №20) шапка тесная: до 1400 px кнопка — короткая «Консультация» */
.header__cta-short { display: none; }
@media (max-width: 1399px) { .header__cta-full { display: none; } .header__cta-short { display: inline; } }
.header__phone { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: 15px; color: var(--primary-dark); white-space: nowrap; }
.header__phone .ico { color: var(--primary); }
.header__phone--lg { font-size: 18px; }
.burger { display: none; }

/* Mega menu */
.mega {
  position: absolute; left: 50%; top: calc(100% - 6px);
  width: min(calc(var(--container) + 0px), calc(100vw - var(--gutter) * 2));
  padding-top: 12px;
  transform: translate(-50%, 8px);
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity var(--ease), transform var(--ease), visibility var(--ease);
}
.nav__item--mega.is-open .mega { opacity: 1; visibility: visible; pointer-events: auto; transform: translate(-50%, 0); }
.mega__inner {
  display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)) 210px; column-gap: 24px;
  padding: 32px; background: var(--white); border-radius: var(--radius-sm); box-shadow: var(--shadow-menu); border: 1px solid var(--border);
}
.mega__title { font-size: 16px; font-weight: 700; color: var(--primary-dark); margin-bottom: 14px; line-height: 1.3; }
.mega__col ul { display: grid; gap: 8px; }
.mega__col a { font-size: 15px; color: var(--text-main); transition: color var(--ease); }
.mega__col a:hover { color: var(--menu-hover); }
.mega__cta {
  display: flex; flex-direction: column; align-items: flex-start; gap: 14px;
  padding: 24px; border-radius: var(--radius-sm); background: var(--background); border: 1px solid var(--border);
}
.mega__cta p { font-weight: 600; font-size: 16px; line-height: 1.35; color: var(--primary-dark); }
.mega__cta .btn { margin-top: auto; }

/* Off-canvas */
.offcanvas { position: fixed; inset: 0; z-index: 120; visibility: hidden; }
.offcanvas.is-open { visibility: visible; }
.offcanvas__overlay { position: absolute; inset: 0; background: rgba(26, 26, 26, .35); opacity: 0; transition: opacity var(--ease); }
.offcanvas.is-open .offcanvas__overlay { opacity: 1; }
.offcanvas__panel {
  position: absolute; top: 0; right: 0; bottom: 0; width: min(380px, 88vw);
  display: flex; flex-direction: column; background: var(--white);
  transform: translateX(100%); transition: transform .3s ease; overflow-y: auto;
}
.offcanvas.is-open .offcanvas__panel { transform: none; }
.offcanvas__head { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.offcanvas__nav { padding: 8px 16px; }
.offcanvas__link, .acc > summary {
  display: flex; align-items: center; justify-content: space-between; min-height: 52px;
  font-size: 17px; font-weight: 600; border-bottom: 1px solid var(--border); cursor: pointer; list-style: none;
}
.acc > summary::-webkit-details-marker { display: none; }
.acc > summary .ico { color: var(--primary); transition: transform var(--ease); }
.acc[open] > summary .ico { transform: rotate(180deg); }
.acc__body { padding: 4px 0 8px 12px; }
.acc--sub > summary { font-size: 15px; font-weight: 600; min-height: 44px; color: var(--primary-dark); border-bottom: 0; }
.acc--sub ul { display: grid; gap: 4px; padding: 0 0 8px 12px; }
.acc--sub a { display: block; padding: 6px 0; font-size: 15px; color: var(--text-secondary); }
.offcanvas__foot { margin-top: auto; padding: 16px; display: grid; gap: 14px; border-top: 1px solid var(--border); }
.offcanvas__pick { padding: 16px; border-radius: var(--radius-sm); background: var(--background); display: grid; gap: 10px; }
.offcanvas__pick p { font-weight: 600; color: var(--primary-dark); }

/* ---------- Sections ---------- */
.section { padding: var(--section-y) 0; }
.section--tint { background: var(--background); }
/* Hero и следующий блок на светлом фоне — не складываем отступы */
.hero + .section { padding-top: 24px; }
.section__head { max-width: 720px; margin: 0 auto 32px; text-align: center; }
.section__head p { margin-top: 10px; font-size: 17px; color: var(--text-secondary); }
.section__head--row { max-width: none; display: flex; align-items: flex-end; justify-content: space-between; text-align: left; gap: 24px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; color: var(--primary); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 12px; }

.grid { display: grid; gap: 20px; }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ---------- Cards (кликабельны целиком) ---------- */
.card {
  position: relative; display: flex; flex-direction: column; gap: 12px;
  padding: 24px; background: var(--white); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease, background-color .22s ease;
}
/* ТЗ: hover — фон #E5F1E9, подъём на 3 px, тонкая изумрудная рамка, 200–250 мс; на touch — только реакция на нажатие */
@media (hover: hover) {
  a.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); border-color: var(--primary); background-color: var(--tint); }
}
a.card:active { background-color: var(--tint); }
a.card:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.card p { color: var(--text-secondary); }
.card .icon-badge { margin-bottom: 2px; transition: transform var(--ease), background-color var(--ease), color var(--ease); }
a.card:hover .icon-badge { background: var(--primary); color: var(--white); }
.card__btn { margin-top: auto; align-self: flex-start; }
a.card:hover .card__btn { background: var(--background); }

.checklist { display: grid; gap: 8px; margin: 2px 0 10px; }
.checklist li { display: flex; align-items: center; gap: 10px; font-size: 15px; font-weight: 500; }
.checklist .ico { color: var(--accent); stroke-width: 2.2; }

.card--scenario { padding: 28px; }
.card--case h3 { font-size: 19px; }

.card--product .card__top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.badge { display: inline-flex; align-items: center; height: 28px; padding: 0 12px; border-radius: 999px; background: var(--tint); color: var(--primary-dark); font-size: 13px; font-weight: 600; }
.specs { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.specs li { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--text-secondary); }
.specs .ico { color: var(--primary); }
.card__foot { margin-top: auto; padding-top: 16px; border-top: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.price { font-size: 24px; font-weight: 700; letter-spacing: -0.02em; color: var(--primary-dark) !important; white-space: nowrap; }

.card--sample .card__top { display: flex; align-items: center; gap: 14px; }
.card--sample .card__top .icon-badge { margin: 0; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags li { padding: 6px 12px; border-radius: 999px; background: var(--background); border: 1px solid var(--border); font-size: 14px; color: var(--text-main); }
.card__text { font-size: 15px; }
.card__hint { margin-top: auto; display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 500; color: var(--primary) !important; padding-top: 14px; border-top: 1px solid var(--border); }

.card--feature { padding: 24px; }

.callout {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  width: fit-content; max-width: 100%; margin: 28px auto 0; padding: 14px 22px;
  border-radius: var(--radius-sm); background: var(--background); border: 1px solid var(--border);
  font-weight: 600; color: var(--primary-dark); text-align: left;
}
.callout .ico { color: var(--primary); }
.section--tint .callout { background: var(--white); }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: calc(var(--header-h) + 28px) 0 48px;
  background:
    radial-gradient(900px 500px at 85% 20%, rgba(32, 102, 79, .07), transparent 60%),
    linear-gradient(180deg, var(--background) 0%, var(--white) 100%);
}
.hero__bg { position: absolute; left: 0; right: 0; bottom: 0; height: 180px; opacity: .07; pointer-events: none; }
.hero__bg img { width: 100%; height: 100%; object-fit: fill; }
.hero__grid { position: relative; display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.hero__title { font-size: clamp(36px, 2.4vw + 14px, 48px); line-height: 1.12; letter-spacing: -0.03em; }
.hero__title .text-accent { display: block; }
.hero__sub { margin-top: 16px; font-size: 18px; color: var(--text-secondary); max-width: 540px; }
.hero__lead { margin-top: 14px; padding-left: 16px; border-left: 2px solid var(--accent); font-size: 17px; font-weight: 500; color: var(--primary-dark); max-width: 540px; }

.trust { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.trust li {
  display: inline-flex; align-items: center; gap: 10px; padding: 8px 14px 8px 8px;
  background: var(--white); border: 1px solid var(--border); border-radius: 999px;
  font-size: 15px; font-weight: 500; box-shadow: var(--shadow);
}
.trust__ico { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px; border-radius: 50%; background: var(--tint); color: var(--primary); }
.trust__ico .ico { width: 17px; height: 17px; }

.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.hero__actions .btn--secondary { background: var(--white); }
.hero__actions .btn--secondary:hover { background: var(--background); }
.hero__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 28px; margin-top: 20px; font-size: 15px; }
.hero__exp { display: inline-flex; align-items: center; gap: 8px; color: var(--text-secondary); }
.hero__exp .ico { color: var(--primary); }

.hero__visual { position: relative; }
.hero__panel {
  position: relative; aspect-ratio: 5 / 4.9; border-radius: var(--radius);
  background: linear-gradient(160deg, #FFFFFF 0%, var(--tint) 100%);
  border: 1px solid var(--border); overflow: hidden; box-shadow: var(--shadow);
}
.hero__glow { position: absolute; width: 70%; aspect-ratio: 1; left: 15%; top: 14%; border-radius: 50%; background: radial-gradient(circle, rgba(32, 102, 79, .16), transparent 68%); }
/* Спираль: бесконечный сдвиг на один виток вдоль оси — читается как медленное вращение.
   SVG = кадр 640 + виток 300, поэтому сдвиг 300/940 = 31.9149% замыкает петлю без шва */
.hero__dna { position: absolute; height: 112%; aspect-ratio: 420 / 640; left: 50%; top: -6%; transform: translateX(-46%); }
.hero__helix {
  position: absolute; inset: 0; overflow: hidden; transform: rotate(10deg);
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 18%, #000 82%, transparent 100%);
          mask-image: linear-gradient(180deg, transparent 0%, #000 18%, #000 82%, transparent 100%);
}
.hero__helix img { width: 100%; height: auto; max-width: none; animation: helix-spin 22s linear infinite; will-change: transform; }
@keyframes helix-spin { to { transform: translateY(-31.9149%); } }

.float-card, .float-chip { position: absolute; background: var(--white); border: 1px solid var(--border); border-radius: 14px; box-shadow: 0 16px 40px rgba(25, 61, 51, .12); }
.float-card--report { left: 7%; bottom: 8%; width: 58%; max-width: 250px; padding: 18px; animation: float 7s ease-in-out infinite; }
.float-card__head { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.float-card__label { font-size: 14px; font-weight: 600; line-height: 1.3; }
.float-card__muted { font-size: 12px; color: var(--text-secondary); line-height: 1.4; }
.float-card__value { font-size: 34px; font-weight: 700; letter-spacing: -0.03em; color: var(--primary-dark); line-height: 1.1; }
.float-card__bar { height: 6px; margin: 12px 0 14px; border-radius: 999px; background: var(--border); overflow: hidden; }
.float-card__bar span { display: block; height: 100%; width: 96%; border-radius: inherit; background: linear-gradient(90deg, var(--primary), var(--accent)); }
.float-card__lines { display: grid; gap: 7px; }
.float-card__lines span { height: 6px; border-radius: 999px; background: var(--background); }
.float-card__lines span:nth-child(2) { width: 80%; }
.float-card__lines span:nth-child(3) { width: 60%; }

.float-chip { display: flex; align-items: center; gap: 10px; padding: 10px 16px 10px 10px; }
.float-chip b { display: block; font-size: 15px; line-height: 1.2; }
.float-chip small { display: block; font-size: 12px; color: var(--text-secondary); line-height: 1.3; }
.float-chip--time { top: 9%; right: 7%; animation: float 6s ease-in-out -2s infinite; }
.float-chip--lock { top: 43%; right: 4%; animation: float 8s ease-in-out -4s infinite; }

@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

/* ---------- Privacy ---------- */
.privacy { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.privacy__lead { margin-top: 14px; font-size: 18px; color: var(--text-secondary); }
.note { display: flex; align-items: flex-start; gap: 10px; margin: 18px 0 22px; font-weight: 500; color: var(--primary-dark); }
.note .ico { color: var(--primary); margin-top: 3px; }
.privacy__list { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.privacy__list li {
  display: flex; flex-direction: column; gap: 12px; padding: 20px;
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
}
.privacy__list p { font-weight: 500; line-height: 1.45; }

/* ---------- Steps ---------- */
.steps { position: relative; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px; counter-reset: none; }
.steps__progress { position: absolute; top: 24px; left: 24px; right: calc(25% - 8px); height: 2px; background: var(--border); }
.steps__progress span { display: block; height: 100%; width: var(--progress, 0%); background: linear-gradient(90deg, var(--primary), var(--accent)); transition: width .4s ease; }
.step { position: relative; display: flex; flex-direction: column; gap: 10px; }
.step__num {
  position: relative; z-index: 1; display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; margin-bottom: 6px; border-radius: 50%;
  background: var(--white); border: 2px solid var(--border); color: var(--text-secondary);
  font-weight: 700; font-size: 18px; transition: background-color .4s ease, border-color .4s ease, color .4s ease;
}
.step.is-active .step__num { background: var(--primary); border-color: var(--primary); color: var(--white); }
.step p { color: var(--text-secondary); }
.step .link { margin-top: 4px; font-size: 15px; }

/* ---------- Reviews ---------- */
.slider-nav { display: flex; gap: 10px; }
.slider__track {
  display: flex; gap: 16px; overflow-x: auto; scroll-snap-type: x mandatory; scroll-behavior: smooth;
  scrollbar-width: none; padding: 8px 0 16px;
}
.slider__track::-webkit-scrollbar { display: none; }
.review {
  flex: 0 0 calc((100% - 16px) / 2); scroll-snap-align: start;
  display: flex; flex-direction: column; gap: 16px; padding: 28px;
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
}
.review__stars { display: flex; gap: 4px; }
.review__stars svg { width: 18px; height: 18px; fill: var(--accent); stroke: none; }
.review__text { font-size: 17px; line-height: 1.6; color: var(--text-main); }
.review__author { display: flex; align-items: center; gap: 12px; margin-top: auto; }
.review__author b { display: block; font-weight: 600; }
.review__author small { display: block; font-size: 14px; color: var(--text-secondary); }
.avatar { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 50%; background: var(--tint); color: var(--primary); font-weight: 700; }
.reviews__foot { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 16px; }
.slider-dots, .swipe-dots { display: flex; gap: 8px; }
.slider-dots button, .swipe-dots span {
  width: 8px; height: 8px; padding: 0; border: 0; border-radius: 999px; background: var(--accent-light); opacity: .5;
  transition: width var(--ease), opacity var(--ease), background-color var(--ease);
}
.slider-dots button.is-active, .swipe-dots span.is-active { width: 24px; opacity: 1; background: var(--primary); }
.swipe-dots { display: none; justify-content: center; margin-top: 8px; }

/* ---------- CTA ---------- */
.cta {
  position: relative; overflow: hidden; display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center;
  padding: 48px 56px; border-radius: var(--radius); background: var(--primary-dark); color: var(--white);
}
.cta__dna { position: absolute; left: -10%; bottom: -30px; width: 120%; height: 220px; max-width: none; opacity: .14; filter: brightness(0) invert(1); pointer-events: none; }
.cta__text { position: relative; }
.cta h2 { color: var(--white); font-size: clamp(30px, 1.6vw + 20px, 40px); }
.cta__text > p { margin-top: 16px; font-size: 18px; color: rgba(255, 255, 255, .78); max-width: 480px; }
.cta__contacts { display: flex; flex-wrap: wrap; gap: 16px 32px; margin-top: 28px; }
.cta__contact { display: flex; align-items: center; gap: 12px; font-weight: 600; font-size: 17px; }
.cta__contact small { display: block; font-size: 13px; font-weight: 400; color: rgba(255, 255, 255, .65); }
.cta__contact:hover .icon-badge { background: var(--accent); }

/* ---------- Forms ---------- */
.form { position: relative; display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; padding: 28px; background: var(--white); border-radius: var(--radius); color: var(--text-main); box-shadow: 0 20px 50px rgba(0, 0, 0, .18); }
.form--plain { padding: 0; box-shadow: none; }
.form__title { font-size: 20px; font-weight: 600; margin-bottom: 4px; }
.field { display: grid; grid-template-columns: minmax(0, 1fr); gap: 6px; }
.field span { font-size: 14px; font-weight: 500; color: var(--text-secondary); }
.field input, .field select, .field textarea {
  height: 52px; padding: 0 16px; font: inherit; color: var(--text-main);
  border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--background);
  transition: border-color var(--ease), background-color var(--ease), box-shadow var(--ease);
}
.field textarea { height: auto; min-height: 92px; padding: 14px 16px; resize: vertical; }
.field select { appearance: none; padding-right: 44px; cursor: pointer;
  background: var(--background) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2352675D' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 16px center / 18px; }
.field span small { font-weight: 400; }
.field input::placeholder, .field textarea::placeholder { color: #9AA6A2; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--primary); background-color: var(--white); box-shadow: 0 0 0 4px rgba(32, 102, 79, .1); }
.field[hidden] { display: none; }
.field.is-invalid input, .field.is-invalid select, .field.is-invalid textarea { border-color: #C2563A; background-color: #FFF8F6; }
.check { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--text-secondary); cursor: pointer; }
.check input { width: 18px; height: 18px; margin: 2px 0 0; accent-color: var(--primary); flex: none; }
.check a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
.check.is-invalid { color: #C2563A; }
.form__note { display: flex; align-items: center; justify-content: center; gap: 6px; font-size: 14px; color: var(--text-secondary); text-align: center; }
.form__success {
  position: absolute; inset: 0; z-index: 2; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px;
  padding: 32px; text-align: center; background: var(--white); border-radius: inherit;
}
.form__success[hidden] { display: none; }
.form__success b { display: block; font-size: 20px; margin-bottom: 4px; color: var(--text-main); }
.form__success p { color: var(--text-secondary); }

/* ---------- Footer ---------- */
.footer { background: var(--background); border-top: 1px solid var(--border); padding: 48px 0 0; font-size: 15px; }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1fr; gap: 40px; }
.footer__brand p { margin-top: 16px; color: var(--text-secondary); max-width: 340px; }
.footer__title { font-weight: 600; margin-bottom: 14px; }
.footer__col ul { display: grid; gap: 10px; color: var(--text-secondary); }
.footer__col a:hover { color: var(--primary); }
.footer__bottom {
  display: flex; justify-content: space-between; gap: 16px; margin-top: 32px; padding-top: 20px; padding-bottom: 24px;
  background: linear-gradient(var(--border), var(--border)) center top / calc(100% - var(--gutter) * 2) 1px no-repeat;
  color: var(--text-secondary); font-size: 14px;
}
.footer__bottom a:hover { color: var(--primary); }

/* ---------- Город посетителя (js/main.js, /geo) ---------- */
.geo__pop[hidden] { display: none; }
.geo { position: relative; }
.geo__chip { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 500; color: var(--text-secondary); white-space: nowrap; }
.geo__chip .ico { color: var(--primary); }
/* В шапке тесно — только значок: подсказка «Выбрать город» или «Пункт приёма в г. …», город и адрес — во всплывающем окне,
   полный текст — в мобильном меню */
.geo__chip span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.geo__chip { width: 36px; height: 36px; justify-content: center; }
/* С «Вопросами и ответами» и лупой (тикет №20) шапка шире: контейнер шапки до 1320 px, номер — значком до 1320 px,
   бургер с 1180 px */
.header__inner { max-width: calc(1320px + var(--gutter) * 2); }
@media (max-width: 1320px) {
  .header__actions .header__phone { width: 40px; height: 40px; justify-content: center; border-radius: var(--radius-sm); }
  .header__actions .header__phone span { display: none; }
}
@media (max-width: 1180px) {
  .nav, .header__cta, .geo { display: none; }
  .header__actions { margin-left: auto; gap: 8px; }
  .header__actions .header__phone { width: 44px; height: 44px; justify-content: center; border-radius: var(--radius-sm); }
  .header__actions .header__phone span { display: none; }
  .burger { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--white); color: var(--primary-dark); }
}
.geo__chip:hover { color: var(--primary); }
.geo__pop {
  position: absolute; top: calc(100% + 12px); left: 50%; z-index: 60; width: 260px; padding: 16px 18px;
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-sm); box-shadow: var(--shadow-menu);
  opacity: 0; visibility: hidden; transform: translate(-50%, 4px); transition: opacity var(--ease), transform var(--ease), visibility var(--ease);
}
.geo__pop::before { content: ""; position: absolute; inset: -12px 0 auto; height: 12px; } /* мост: курсор доходит до окна, не закрывая его */
.geo:hover .geo__pop, .geo:focus-within .geo__pop { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.geo__label { font-size: 13px; color: var(--text-secondary); }
.geo__addr { margin: 4px 0 10px; font-weight: 600; color: var(--text-main); }
.offcanvas__geo { display: flex; align-items: flex-start; gap: 8px; font-size: 14px; color: var(--text-secondary); }
.offcanvas__geo .ico { color: var(--primary); margin-top: 2px; }
.offcanvas__geo b { color: var(--text-main); }
.offcanvas__addr { display: block; color: var(--text-main); }

/* ---------- E-mail по кнопке (защита от спам-ботов) ---------- */
.email { display: inline-flex; align-items: center; gap: 8px; }
.email__show, .email__copy { display: inline-flex; align-items: center; gap: 6px; padding: 0; border: 0; background: none; font: inherit; color: inherit; cursor: pointer; }
.email__show { text-decoration: underline dotted; text-underline-offset: 3px; }
.email__show:hover, .email__copy:hover { color: var(--primary); }
.email__copy.is-done { color: var(--accent); }

.footer__dev { color: var(--text-secondary); }

/* ---------- Floating button ---------- */
.fab { position: fixed; right: 24px; bottom: 24px; z-index: 90; display: flex; flex-direction: column; align-items: flex-end; gap: 12px; transition: opacity var(--ease), transform var(--ease), visibility var(--ease); }
.fab--hidden { opacity: 0; visibility: hidden; transform: translateY(16px); }
.fab__btn {
  display: inline-flex; align-items: center; gap: 10px; height: 56px; padding: 0 22px 0 18px;
  border: 0; border-radius: 999px; background: var(--primary); color: var(--white); font-weight: 600; font-size: 15px;
  box-shadow: 0 12px 30px rgba(25, 61, 51, .3); transition: background-color var(--ease), transform var(--ease);
}
.fab__btn:hover { background: var(--primary-dark); transform: translateY(-2px); }
.fab__menu {
  width: 260px; padding: 16px; display: grid; gap: 8px;
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-menu);
  animation: pop .2s ease;
}
.fab__menu[hidden] { display: none; }
.fab__menu p { font-size: 14px; color: var(--text-secondary); margin-bottom: 4px; }
.fab__link { display: flex; align-items: center; gap: 10px; height: 48px; padding: 0 14px; border-radius: var(--radius-sm); border: 1px solid var(--border); font-weight: 600; transition: border-color var(--ease), background-color var(--ease); }
.fab__link:hover { border-color: var(--primary); background: var(--background); }
.fab__link .ico { color: var(--primary); }
@keyframes pop { from { opacity: 0; transform: translateY(8px); } }

/* ---------- Modal ---------- */
.modal { position: fixed; inset: 0; z-index: 150; display: flex; align-items: center; justify-content: center; padding: 16px; visibility: hidden; }
.modal.is-open { visibility: visible; }
.modal__overlay { position: absolute; inset: 0; background: rgba(26, 26, 26, .45); opacity: 0; transition: opacity var(--ease); }
.modal.is-open .modal__overlay { opacity: 1; }
.modal__dialog {
  position: relative; width: 100%; max-width: 460px; max-height: calc(100vh - 32px); overflow-y: auto;
  padding: 40px 32px 32px; background: var(--white); border-radius: var(--radius); box-shadow: 0 30px 80px rgba(0, 0, 0, .2);
  opacity: 0; transform: translateY(16px) scale(.98); transition: opacity var(--ease), transform var(--ease);
}
.modal.is-open .modal__dialog { opacity: 1; transform: none; }
.modal__close { position: absolute; top: 12px; right: 12px; }
.modal__title { font-size: 26px; }
.modal__sub { margin: 10px 0 24px; color: var(--text-secondary); }
body.is-locked { overflow: hidden; }

/* ---------- Animations (только при включённом JS) ---------- */
.js [data-reveal] { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.js [data-reveal].is-visible { opacity: 1; transform: none; }
.js [data-stagger] { opacity: 0; transform: translateY(12px); }
.js .is-loaded [data-stagger] { opacity: 1; transform: none; transition: opacity .5s ease, transform .5s ease; transition-delay: calc(var(--i, 0) * 90ms); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition-duration: .01ms !important; }
  .js [data-reveal], .js [data-stagger] { opacity: 1; transform: none; }
  a.card:hover { transform: none; }
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1180px) {
  .header__inner { gap: 20px; }
  .header__phone span { display: none; }
  .nav__link { padding: 0 9px; }
  .mega__inner { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: 28px; }
  .mega__cta { grid-column: span 1; }
}

@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero__grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .privacy { gap: 40px; }
  .cta { grid-template-columns: minmax(0, 1fr); padding: 48px; gap: 36px; }
  .footer__grid { grid-template-columns: 1fr 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 960px) {
  .nav, .header__cta, .geo { display: none; }
  .header__actions { margin-left: auto; gap: 8px; }
  .header__actions .header__phone { width: 44px; height: 44px; justify-content: center; border-radius: var(--radius-sm); }
  .burger { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--white); color: var(--primary-dark); }

  .hero__grid { grid-template-columns: 1fr; }
  .hero__visual { max-width: 520px; width: 100%; margin: 0 auto; }
  .hero__panel { aspect-ratio: 16 / 10; }
  .hero__dna { height: 130%; top: -15%; }

  .grid--3 { grid-template-columns: 1fr 1fr; }
  #scenario .grid--3, #popular .grid--3, #samples .grid--3 { grid-template-columns: 1fr; max-width: 640px; margin: 0 auto; }

  .privacy { grid-template-columns: 1fr; }

  .steps { grid-template-columns: 1fr; gap: 20px; padding-left: 0; }
  .steps__progress { top: 24px; bottom: 24px; left: 23px; right: auto; width: 2px; height: auto; }
  .steps__progress span { width: 100%; height: var(--progress, 0%); background: linear-gradient(180deg, var(--primary), var(--accent)); transition: height .4s ease; }
  .step { padding-left: 72px; min-height: 48px; }
  .step__num { position: absolute; left: 0; top: 0; margin: 0; }
  .step h3 { padding-top: 10px; }

  .review { flex-basis: 100%; }
}

@media (max-width: 768px) {
  body { font-size: 16px; }
  .section__head { margin-bottom: 24px; }
  .section__head p { font-size: 16px; }
  .section__head--row .slider-nav { display: none; }

  .hero { padding: calc(var(--header-h) + 20px) 0 40px; }
  .hero__sub { font-size: 17px; }
  .hero__lead { font-size: 16px; }
  .trust li { font-size: 14px; }
  .hero__actions .btn { flex: 1 1 100%; }
  .hero__meta { flex-direction: column; align-items: flex-start; gap: 10px; }
  .hero__panel { aspect-ratio: 4 / 3; }
  .float-card--report { left: 5%; top: 6%; bottom: auto; width: 56%; padding: 14px; }
  .float-card__head { margin-bottom: 8px; }
  .float-card__value { font-size: 28px; }
  .float-card__lines { display: none; }
  .float-chip--time { top: auto; bottom: 5%; right: 4%; }
  .float-chip--lock { display: none; }

  /* Горизонтальный свайп на mobile (по ТЗ: «Когда нужен ДНК-тест», «Почему нам доверяют») */
  .swipe {
    display: flex; grid-template-columns: none; gap: 16px; overflow-x: auto; scroll-snap-type: x mandatory;
    margin: 0 calc(var(--gutter) * -1); padding: 4px var(--gutter) 20px; scroll-padding: 0 var(--gutter); scrollbar-width: none;
  }
  .swipe::-webkit-scrollbar { display: none; }
  .swipe > .card { flex: 0 0 82%; scroll-snap-align: start; }
  .swipe-dots { display: flex; }

  .grid--3 { grid-template-columns: 1fr; }
  .card, .card--scenario { padding: 24px; }
  .privacy__list { grid-template-columns: 1fr; gap: 12px; }
  .privacy__list li { flex-direction: row; align-items: center; padding: 16px 18px; }
  .callout { margin-top: 20px; padding: 12px 16px; font-size: 15px; }

  .review { padding: 24px; }
  .review__text { font-size: 16px; }

  .cta { padding: 32px 20px 20px; border-radius: var(--radius); }
  .cta__contacts { flex-direction: column; margin-top: 24px; }
  .form { padding: 24px 20px; }
  .field select { padding: 0 36px 0 14px; font-size: 16px; text-overflow: ellipsis; background-position: right 12px center; }

  .footer { padding-top: 36px; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px 24px; }
  .footer__bottom { flex-direction: column; padding-bottom: 96px; }

  .fab { right: 16px; bottom: 16px; }
  .fab__btn { height: 52px; padding: 0 18px 0 14px; font-size: 14px; }
  .modal__dialog { padding: 36px 20px 24px; }
}

@media (max-width: 420px) {
  .footer__grid { grid-template-columns: 1fr; }
  .float-card--report { width: 60%; }
}