:root {
  --bg: #0b0b0b;
  --bg-soft: #121212;
  --card: #171717;
  --text: #f8f8f8;
  --muted: #b9b9b9;
  --gold: #d3a35f;
  --gold-deep: #b78743;
  --line: #2a2a2a;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Montserrat", sans-serif;
  background: var(--bg);
  color: var(--text);
}

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

.container {
  width: min(1200px, 92vw);
  margin: 0 auto;
}

.header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(11, 11, 11, 0.9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.header__inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo img {
  width: 190px;
}

.logo {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-decoration: none;
}

.logo-registration {
  color: #9f9f9f;
  font-size: 10px;
  line-height: 1.3;
  letter-spacing: 0.2px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav a {
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
}

.menu-toggle {
  display: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
}

.btn--gold {
  background: var(--gold);
  color: #111;
}

.btn--gold:hover {
  background: var(--gold-deep);
}

.btn--outline {
  border-color: var(--gold);
  color: var(--gold);
}

.btn--ghost {
  border-color: var(--line);
  color: var(--text);
  background: transparent;
}

.hero {
  padding: 68px 0 34px;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
  align-items: center;
}

.badge {
  display: inline-block;
  margin: 0 0 14px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
}

h1 {
  margin: 0;
  font-size: clamp(36px, 6vw, 72px);
  line-height: 1.05;
}

.hero__subtitle {
  margin: 18px 0 0;
  max-width: 560px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.6;
}

.hero__actions {
  margin-top: 24px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero__media {
  background: radial-gradient(circle at 40% 30%, #2a2a2a, #0f0f0f);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 22px;
}

section {
  padding: 34px 0;
}

h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 52px);
}

.section-text {
  color: var(--muted);
  max-width: 760px;
}

.education-actions {
  margin: 14px 0 16px;
}

.cards {
  display: grid;
  gap: 16px;
}

.cards--three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.cards--grid {
  margin-top: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.specs-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.specs .card ul {
  margin: 0;
  padding-left: 18px;
}

.specs .card li {
  margin-bottom: 10px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px;
  color: var(--muted);
  line-height: 1.6;
}

.card h3 {
  margin: 0 0 8px;
  color: var(--text);
  font-size: 20px;
}

.protocol__inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: start;
}

.protocol p,
.protocol li {
  color: var(--muted);
  line-height: 1.7;
}

.protocol ul {
  margin: 14px 0 24px;
  padding-left: 20px;
}

.protocol__media {
  border: 1px solid var(--line);
  background: var(--bg-soft);
  border-radius: 18px;
  overflow: hidden;
  cursor: pointer;
}

.gallery {
  margin-top: 16px;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.gallery img {
  border-radius: 14px;
  border: 1px solid var(--line);
  aspect-ratio: 4 / 5;
  object-fit: cover;
  cursor: zoom-in;
}

.contacts__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.contacts p {
  color: var(--muted);
}

.contact-form {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px;
  display: grid;
  gap: 12px;
}

.contact-form small,
.lead-form small {
  color: var(--muted);
  font-size: 12px;
}

.contact-form small a,
.lead-form small a {
  color: var(--gold);
  text-decoration: underline;
}

.contacts-actions {
  margin-top: 14px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid #2f2f2f;
  background: #101010;
  color: var(--text);
  border-radius: 12px;
  padding: 12px 14px;
  font: inherit;
}

.footer {
  padding: 44px 0 48px;
  border-top: 1px solid var(--line);
  background: #000;
}

.footer-top {
  display: flex;
  align-items: center;
  gap: 26px;
}

.footer-logo {
  width: 72px;
  flex: 0 0 72px;
}

.footer-logo img {
  width: 100%;
}

.footer-about {
  color: #fff;
  font-size: 18px;
  line-height: 1.45;
}

.footer-about span {
  font-weight: 600;
}

.footer-menu {
  margin-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-menu nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.footer-menu nav a,
.footer-phone {
  color: #fff;
  text-decoration: none;
  font-size: 26px;
  font-weight: 600;
  text-transform: uppercase;
}

.footer-privacy {
  margin-top: 28px;
}

.footer-privacy a {
  color: #fff;
  font-size: 16px;
  opacity: 0.85;
}

.form-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 40;
}

.form-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.95);
  width: min(560px, 92vw);
  background: #111;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
  z-index: 50;
  opacity: 0;
  pointer-events: none;
  transition: 0.2s ease;
}

.modal.active {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
  pointer-events: all;
}

.modal h3 {
  margin: 0 0 14px;
  font-size: 24px;
}

.modal-close {
  position: absolute;
  right: 10px;
  top: 8px;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font-size: 22px;
}

.lead-form {
  display: grid;
  gap: 10px;
}

.lead-form input,
.lead-form textarea {
  width: 100%;
  border: 1px solid #2f2f2f;
  background: #101010;
  color: var(--text);
  border-radius: 12px;
  padding: 12px 14px;
  font: inherit;
}

.contact-modal-buttons {
  display: grid;
  gap: 10px;
}

.contact-channel {
  text-decoration: none;
  color: #fff;
  border-radius: 12px;
  padding: 14px 16px;
  font-weight: 600;
  text-align: center;
}

.contact-channel.tg {
  background: #0088cc;
}

.contact-channel.max {
  background: #1d1d1d;
  border: 1px solid #333;
}

.result-toast {
  position: fixed;
  left: 50%;
  bottom: 20px;
  transform: translateX(-50%);
  padding: 12px 16px;
  border-radius: 10px;
  background: #1f1f1f;
  border: 1px solid #373737;
  color: #fff;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 60;
}

.result-toast.active {
  opacity: 1;
}

.image-lightbox {
  position: fixed;
  inset: 0;
  z-index: 80;
  background: rgba(0, 0, 0, 0.95);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.image-lightbox.active {
  display: flex;
}

.image-lightbox__img {
  max-width: min(1200px, 92vw);
  max-height: 90vh;
  width: auto;
  height: auto;
  border-radius: 12px;
}

.image-lightbox__close,
.image-lightbox__prev,
.image-lightbox__next {
  position: absolute;
  border: 1px solid #3a3a3a;
  background: rgba(20, 20, 20, 0.85);
  color: #fff;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 22px;
  line-height: 1;
}

.image-lightbox__close {
  top: 16px;
  right: 16px;
}

.image-lightbox__prev {
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
}

.image-lightbox__next {
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
}

@media (max-width: 960px) {
  .menu-toggle {
    display: inline-flex;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: transparent;
    color: var(--text);
    font: inherit;
    padding: 8px 10px;
  }

  .nav {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: #101010;
    border-bottom: 1px solid var(--line);
    padding: 16px 4vw;
    flex-direction: column;
    align-items: flex-start;
  }

  .nav.open {
    display: flex;
  }

  .header .btn--outline {
    display: none;
  }

  .logo-registration {
    font-size: 9px;
  }

  .hero__inner,
  .protocol__inner,
  .contacts__inner {
    grid-template-columns: 1fr;
  }

  .cards--three,
  .cards--grid,
  .specs-grid,
  .gallery {
    grid-template-columns: 1fr;
  }

  .footer-top {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-about {
    font-size: 14px;
  }

  .footer-menu {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-menu nav {
    flex-wrap: wrap;
    gap: 12px;
  }

  .footer-menu nav a,
  .footer-phone {
    font-size: 18px;
  }

  .footer-privacy a {
    font-size: 13px;
  }
}