:root {
  /* Цвета */
  --color-bg: #f4f5fb;
  --color-bg-alt: #ffffff;
  --color-surface: #ffffff;
  --color-surface-soft: #f0f2f9;
  --color-surface-strong: #e1e5f3;

  --color-text: #101321;
  --color-text-muted: #6b708c;
  --color-border: #d3d7ea;
  --color-border-strong: #b5bddc;

  --color-accent: #2563eb;
  --color-accent-soft: rgba(37, 99, 235, 0.1);
  --color-accent-strong: rgba(37, 99, 235, 0.2);

  --color-overlay: rgba(15, 23, 42, 0.35);
  --color-overlay-strong: rgba(15, 23, 42, 0.6);

  --color-whatsapp: #25d366;
  --color-whatsapp-bg: #e6f8ef;

  /* Типографика */
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", sans-serif;

  /* База: комфортно на мобиле и чуть крупнее на десктопе */
  --fs-base: clamp(15px, 1.6vw, 17px);
  --fs-sm: clamp(13px, 1.3vw, 15px);
  --fs-lg: clamp(17px, 2vw, 20px);
  --fs-btn: clamp(14px, 3.4vw, 16px);

  --fs-section-title: clamp(26px, 4vw, 36px);
  --fs-section-subtitle: clamp(18px, 2.8vw, 22px);

  /* Радиусы и тени */
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 18px;
  --radius-pill: 999px;

  --shadow-soft: 0 16px 40px rgba(15, 23, 42, 0.12);
  --shadow-floating: 0 18px 40px rgba(15, 23, 42, 0.18);

  /* Контейнеры / отступы */
  --container-max: 1040px;
  --section-y: 56px;
  --section-y-lg: 80px;

  /* Кнопки */
  --btn-padding-y: 10px;
  --btn-padding-x: 18px;
  --btn-gap: 6px;

  /* Хедер / плавающие кнопки */
  --header-height: 72px;
  --fab-size: 40px;
  --fab-size-lg: 48px;
  --fab-offset: 24px;
}

@media (min-width: 1024px) {
  :root {
    --section-y: 80px;
    --section-y-lg: 100px;
  }
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: var(--fs-base);
  background: radial-gradient(
    circle at top,
    #e9ecff 0,
    #f4f5fb 45%,
    #edf0ff 100%
  );
  color: var(--color-text);
  line-height: 1.5;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;

  background-image: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI2IiBoZWlnaHQ9IjYiIHZpZXdCb3g9IjAgMCA2IDYiPjxjaXJjbGUgY3g9IjMiIGN5PSIzIiByPSIxIiBmaWxsPSIjMjU2M2ViIiBvcGFjaXR5PSIwLjA2Ii8+PC9zdmc+");
  background-size: 6px 6px;
  opacity: 0.45;
}

/* Базовые элементы */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: var(--section-y) 0;
}

.section-title {
  font-size: var(--fs-section-title);
  font-weight: 600;
  margin: 0 0 16px;
  color: var(--color-text);
}

.section-subtitle {
  font-size: var(--fs-section-subtitle);
  font-weight: 500;
  margin: 0 0 12px;
  color: var(--color-text);
}

.section-text {
  margin: 0 0 12px;
  font-size: var(--fs-base);
  color: var(--color-text-muted);
  max-width: 720px;
}

/* Альтернативный фон секции (CTA) */
.section--alt {
  background: linear-gradient(135deg, #e4ebff, #f7f9ff);
}

/* Кнопки */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--btn-padding-y) var(--btn-padding-x);
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  background: var(--color-accent);
  color: #ffffff;
  font-size: var(--fs-btn);
  font-weight: 500;
  cursor: pointer;
  gap: var(--btn-gap);
  transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
  box-shadow: 0 12px 26px rgba(37, 99, 235, 0.25);
  text-decoration: none;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 40px rgba(37, 99, 235, 0.35);
}

.btn:active {
  transform: translateY(0);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.25);
}

.btn--outline {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
  box-shadow: none;
}

.btn--outline:hover {
  background: var(--color-accent-soft);
}

/* Теги / чипы */

.tags {
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tags li {
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  background: var(--color-surface-soft);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

/* Бургер (одинаковый для всех разрешений) */

.burger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  border: none;
  background: transparent;
  padding: 4px;
  z-index: 1100;
}

.burger span {
  width: 26px;
  height: 2px;
  background: var(--color-text);
  border-radius: 999px;
  transition: transform 0.25s ease, opacity 0.2s ease,
    background-color 0.25s ease;
}

/* Анимация бургера в крест */
.burger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.burger.active span:nth-child(2) {
  opacity: 0;
}
.burger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Оверлей меню – на весь экран, панель под шапкой */

.mobile-nav {
  position: fixed;
  inset: 0;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: calc(var(--header-height) + 24px) 16px 24px;
  background: var(--color-overlay);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  z-index: 1000;
}

.mobile-nav.open {
  display: flex;
  animation: mobileNavFadeIn 0.25s ease-out;
}

/* Карточка с пунктами меню */
.mobile-nav__panel {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  min-width: min(360px, 100%);
  max-width: 420px;
  box-shadow: var(--shadow-floating);
  transform: translateY(10px);
  border: 1px solid var(--color-border);
  animation: mobileNavSlideUp 0.25s ease-out forwards;
}

.mobile-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.mobile-nav__list a {
  display: block;
  font-size: clamp(16px, 4.4vw, 18px);
  font-weight: 500;
  text-decoration: none;
  color: var(--color-text);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding-bottom: 4px;
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  transition: color 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.mobile-nav__list a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent-strong);
  transform: translateX(4px);
}

/* Блокируем скролл под оверлеем */
body.no-scroll {
  overflow: hidden;
}

/* Анимации */
@keyframes mobileNavFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes mobileNavSlideUp {
  from {
    transform: translateY(14px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Мелкая адаптация под очень узкие экраны */
@media (max-width: 480px) {
  .mobile-nav__panel {
    width: 100%;
    border-radius: var(--radius);
  }

  .mobile-nav__list a {
    font-size: clamp(15px, 4.5vw, 16px);
  }
}

/* Модалка контактов */

.contact-modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}

.contact-modal.open {
  display: flex;
}

.contact-modal__backdrop {
  position: absolute;
  inset: 0;
  background: var(--color-overlay-strong);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.contact-modal__dialog {
  position: relative;
  z-index: 1;
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border-strong);
  box-shadow: var(--shadow-soft);
  padding: 24px 24px 20px;
  max-width: 420px;
  width: 100%;
}

.contact-modal__close {
  position: absolute;
  top: 10px;
  right: 12px;
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  font-size: 20px;
  cursor: pointer;
}

.contact-modal__title {
  margin: 0 0 8px;
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--color-text);
}

.contact-modal__text {
  margin: 0 0 16px;
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

.contact-modal__actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.contact-modal__btn {
  display: block;
  text-align: center;
  padding: 10px 14px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  font-size: var(--fs-sm);
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  transition: background 0.2s ease, transform 0.2s ease, border-color 0.2s ease,
    color 0.2s ease;
}

.contact-modal__btn:hover {
  background: var(--color-accent-soft);
  border-color: var(--color-accent);
  color: var(--color-text);
  transform: translateY(-1px);
}

/* Логотип */

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  cursor: pointer;
}

.logo__mark {
  font-size: 18px;
  font-weight: 700;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: radial-gradient(circle at top left, #eff2ff, #dde5ff);
  border: 1px solid var(--color-border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-soft);
  color: var(--color-text);
  letter-spacing: 0.03em;
}

.logo__info {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo__name {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text);
}

.logo__role {
  font-size: 10px;
  opacity: 0.7;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

/* Кнопка "наверх" */

.scroll-top {
  position: fixed;
  left: var(--fab-offset);
  bottom: var(--fab-offset);
  width: var(--fab-size);
  height: var(--fab-size);
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-strong);
  background: var(--color-surface);
  box-shadow: var(--shadow-floating);
  color: var(--color-text);
  font-size: 20px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;

  opacity: 0;
  visibility: hidden;
  pointer-events: none;

  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease,
    box-shadow 0.2s ease;
  z-index: 1400;
}

.scroll-top--visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.scroll-top:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.25);
}

/* Кнопка WhatsApp */

.whatsapp-btn {
  position: fixed;
  right: var(--fab-offset);
  bottom: var(--fab-offset);
  width: var(--fab-size-lg);
  height: var(--fab-size-lg);
  border-radius: var(--radius-pill);
  border: 1px solid rgba(37, 211, 102, 0.6);
  background: var(--color-whatsapp-bg);
  box-shadow: var(--shadow-floating);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;

  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  z-index: 1400;
}

.whatsapp-btn svg {
  width: 24px;
  height: 24px;
  fill: var(--color-whatsapp);
}

.whatsapp-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.3);
}

/* Футер */

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-sm);
}

.footer-link {
  text-decoration: none;
  opacity: 0.8;
}

.footer-link:hover {
  opacity: 1;
  text-decoration: underline;
}

.footer-separator {
  opacity: 0.5;
}

/* --- APPEAR ANIMATION BASE --- */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Cookie Consent -------------------------------------------------------- */

.cookie-consent {
  position: fixed;
  inset: 0;
  z-index: 9999;

  /* по умолчанию скрыт */
  display: none;
  opacity: 0;
  pointer-events: none;

  align-items: flex-end;
  justify-content: center;

  transition: opacity 0.25s ease;
  font-family: var(--font-main);
}

/* когда показываем баннер */
.cookie-consent.is-visible {
  display: flex;
  opacity: 1;
  pointer-events: auto;
}

.cookie-consent__backdrop {
  position: absolute;
  inset: 0;
  background: var(--color-overlay-strong);
}

/* Панель баннера */
.cookie-consent__panel {
  position: relative;
  margin: 1.5rem;
  max-width: 720px;
  width: 100%;
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  box-shadow: var(--shadow-floating);
  z-index: 1;
}

/* ... дальше твои внутренние стили (title, text, buttons и т.п.) */