@font-face {
    font-family: 'Inter';
    src: url('../fonts/Inter-Regular.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Inter';
    src: url('../fonts/Inter-SemiBold.woff2') format('woff2');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    margin: -1px !important;
    border: 0 !important;
    padding: 0 !important;
    white-space: nowrap !important;
    clip-path: inset(100%) !important;
    clip: rect(0 0 0 0) !important;
    overflow: hidden !important;
}

:root {
    --color-red: #CA0000;
    --color-dark-red: #8c0000;
    --color-white: #FFFFFF;
    --color-gray: #E7E7E7;
    --color-dark: #2D2D2D;

    --font-family-base: 'Inter', sans-serif;

    --container-width: 1200px;
    --container-padding-x: 15px;

    --transition-duration: .2s;

    --border-radius: 15px;
}

.red {
    color: var(--color-dark-red);
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-family-base), sans-serif;
    font-weight: 400;
}

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

.placeholder__container label {
    color: #999;
    padding: 10px 10px;
    background-color: transparent;
    font-size: 16px;
    line-height: 1;
    pointer-events: none;
    position: absolute;
    transition: all 200ms;
    top: 0;
    left: 0;
}

.head {
    position: sticky;
    top: 0;
    background-color: var(--color-white);
    z-index: 1000;
}

.header_container {
    padding-block: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo_container { width: 200px; height: auto; }
.logo_container svg { width: 100%; height: 100%; }
.logo_container img { width: 100%; height: 100%; }

.links_container { display: flex; align-items: center; gap: 15px; }
.contact_container {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
}

.page_link {
    display: block;
    font-size: clamp(14px, 2vw, 20px);
    text-decoration: none;
    color: black;
    background-color: var(--color-gray);
    border-radius: var(--border-radius);
    padding: 10px 20px;
    box-shadow: 1px 2px 4px rgba(0,0,0,.2);
    transition: background-color var(--transition-duration);
}
.page_link:hover { background-color: #d5d5d5; }
.page_link.active { color: var(--color-white); background-color: var(--color-red); }
.page_link.active:hover { background-color: var(--color-dark-red); }

.contact_link {
    position: relative; display: inline-block; text-decoration: none; color: black;
}
.contact_link::after {
    content: ""; position: absolute; bottom: -3px; left: 0; height: 2px; width: 100%;
    background-color: black; transform: scaleX(0); transform-origin: left;
    transition: transform .3s ease;
}
.contact_link:hover::after { transform: scaleX(1); }

.burger {
    display: none;
    width: 44px; height: 44px;
    margin-left: 12px;
    border: 1px solid var(--color-gray);
    border-radius: 10px;
    background: var(--color-white);
    cursor: pointer;
}
.burger span {
    display: block;
    width: 22px; height: 2px;
    margin: 5px auto;
    background: var(--color-dark);
    transition: transform var(--transition-duration), opacity var(--transition-duration);
}
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Off-canvas */
.mobile-menu {
    position: fixed; inset: 0 0 0 auto; /* right side */
    width: min(85vw, 360px);
    transform: translateX(100%);
    background: var(--color-white);
    box-shadow: -8px 0 24px rgba(0,0,0,.1);
    transition: transform var(--transition-duration);
    z-index: 1001;
    display: flex; flex-direction: column; padding: 16px;
}
.mobile-menu.is-open { transform: translateX(0); }
.mobile-menu__header {
    display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px;
    font-weight: 600; color: var(--color-dark);
}
.mobile-menu__close {
    border: none; background: transparent; font-size: 20px; line-height: 1; cursor: pointer;
}
.mobile-menu__nav { display: grid; gap: 12px; margin: 12px 0; }
.mobile-link {
    display: block; padding: 12px 14px; border-radius: 12px; text-decoration: none;
    background: var(--color-gray); color: var(--color-dark);
    transition: background-color var(--transition-duration);
}
.mobile-link:hover { background: #d5d5d5; }
.mobile-link.active { background: var(--color-red); color: var(--color-white); }
.mobile-menu__contacts { margin-top: auto; display: grid; gap: 8px; }
.mobile-contact { color: var(--color-dark); text-decoration: none; }

.mobile-menu__overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,.35);
    z-index: 1000;
}

.no-scroll { overflow: hidden; }

.site-footer {
    background: var(--color-white);
    border-top: 1px solid var(--color-gray);
    color: var(--color-dark);
    margin-top: 40px;
}

.site-footer__inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 24px;
    padding-block: 24px;
}

.site-footer__col:nth-child(2) {
    text-align: right;
}

.site-footer__text {
    margin: 6px 0;
    line-height: 1.5;
}

.task__container .video {
    max-width: 100%;
}

@media (max-width: 900px) {
    .links_container,
    .contact_container { display: none; }

    .burger { display: inline-block; }

    .header_container { padding-block: 16px; }
    .logo_container { width: 160px; }
}

@media (max-width: 725px) {
    .site-footer__col:nth-child(2) {
        text-align: left;
    }
}
/* это ВВ начало */

.tabs-block {
  padding-bottom:80px;
  background: #fff;
}

.tabs-buttons {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.tabs-img {
    max-width: 100%;
    height: auto;
}

.tab-btn {
  background: #f8f8f8;
  border: 1px solid #ccc;
  padding: 10px 20px;
  cursor: pointer;
  font-weight: 500;
  border-radius: 5px;
  transition: all 0.2s ease;
}

.tab-btn.active {
  background: var(--color-red);
  border-color: var(--color-red);
  color: white;
}

.tab-content {
  animation: fadeIn 0.3s ease-in-out;
}

.more-btn {
  margin-top: 15px;
  background-color: var(--color-red);
  color: white;
  border: none;
  padding: 10px 18px;
  border-radius: 5px;
  font-weight: bold;
  cursor: pointer;
  transition: background-color 0.2s ease-in-out;
}

.more-btn:hover {
  background-color: var(--color-dark-red);
}

@keyframes fadeIn {
  from {opacity: 0;}
  to {opacity: 1;}
}
/* это ВВ конец */