.page-title{
    margin-top: 20px;
}

.margin-top{
    margin-top:20px;
}

html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
}

.hero-description {
    margin-top: 0px;
    margin-bottom: 30px;
}

.hero-grid {
    text-align: center;
}

.hero-logo {
    width: 300px;
    height: auto;
}

.mini-logo {
    padding-bottom: 8px;
    max-width: 60px;
    height: auto;
}

section {
    scroll-margin-top: 60px;
}

/* =========================================================
   INFORMATION PAGE
========================================================= */

.info-page {
    padding: 100px 0 120px;
    background: #1a1a1f;
    color: #f5f5f5;
}


/* =========================================================
   CONTAINER
========================================================= */

.info-container {
    width: min(900px, calc(100% - 40px));
    margin: 0 auto;
}



/* =========================================================
   TABLE OF CONTENTS
========================================================= */

.info-toc {
    position: sticky;
    top: 105px;
    align-self: start;
}

.info-toc-title {
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.35);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.16em;
}

.info-toc-nav {
    display: flex;
    flex-direction: column;
    border-left: 1px solid rgba(255, 255, 255, 0.1);
}

    .info-toc-nav a {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 9px 0 9px 15px;
        color: rgba(255, 255, 255, 0.45);
        font-size: 12px;
        line-height: 1.4;
        text-decoration: none;
        border-left: 1px solid transparent;
        margin-left: -1px;
        transition: color 0.2s ease, border-color 0.2s ease;
    }

        .info-toc-nav a span {
            color: rgba(255, 255, 255, 0.25);
            font-size: 9px;
        }

        .info-toc-nav a:hover {
            color: #ffffff;
            border-left-color: rgba(255, 255, 255, 0.7);
        }


/* =========================================================
   CONTENT
========================================================= */

.info-content {
    min-width: 0;
    align-content: center;
}

.info-section {
    display: grid;
    grid-template-columns: 15px minmax(0, 1fr);
    gap: 25px;
    width: 100%;
    padding-bottom: 20px;
    margin-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    scroll-margin-top: 100px;
}

    .info-section:last-child {
        margin-bottom: 0;
        border-bottom: none;
    }


.info-section-number {
    padding-top: 8px;
    color: rgba(255, 255, 255, 0.25);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
}


/* =========================================================
   TITLES
========================================================= */

.info-title {
    margin: 0 0 28px;
    color: #ffffff;
    font-size: clamp(30px, 4vw, 48px);
    font-weight: 600;
    line-height: 1.08;
    letter-spacing: -0.025em;
}

.info-lead {
    max-width: 800px;
    margin: 0 0 45px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 16px;
    line-height: 1.8;
}


/* =========================================================
   SUBSECTIONS
========================================================= */

.info-subsection {
    display: grid;
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 25px;
    padding: 28px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    scroll-margin-top: 100px;
}

.info-subsection-label {
    color: rgba(255, 255, 255, 0.25);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.08em;
}

.info-subsection-content h2 {
    margin: 0 0 10px;
    font-size: 21px;
    font-weight: 600;
}

.info-subsection-content p {
    max-width: 700px;
    margin: 0;
    color: rgba(255, 255, 255, 0.58);
    font-size: 14px;
    line-height: 1.7;
}


/* =========================================================
   IT CARD
========================================================= */

.info-card {
    padding: 32px;
    background: #202026;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.info-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    margin-bottom: 28px;
}

.info-card-code {
    color: #ffffff;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.12em;
}

.info-card-label {
    color: rgba(255, 255, 255, 0.3);
    font-size: 9px;
    font-weight: 600;
    letter-spacing: 0.12em;
}

.info-card h3 {
    max-width: 700px;
    margin: 0 0 20px;
    font-size: 23px;
    line-height: 1.3;
}

.info-card p {
    max-width: 800px;
    margin: 0 0 15px;
    color: rgba(255, 255, 255, 0.58);
    font-size: 14px;
    line-height: 1.8;
}

    .info-card p:last-child {
        margin-bottom: 0;
    }


/* =========================================================
   NOTE
========================================================= */

.info-note {
    display: flex;
    gap: 16px;
    margin-top: 25px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.025);
    border-left: 2px solid rgba(255, 255, 255, 0.2);
}

.info-note-marker {
    color: rgba(255, 255, 255, 0.3);
    font-size: 18px;
}

.info-note p {
    margin: 0;
    color: rgba(255, 255, 255, 0.48);
    font-size: 12px;
    line-height: 1.7;
}


/* =========================================================
   TECHNOLOGY GROUPS
========================================================= */

.tech-group {
    display: grid;
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 25px;
    padding: 30px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.tech-group-number {
    color: rgba(255, 255, 255, 0.25);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.08em;
}

.tech-group-content h3 {
    margin: 0 0 22px;
    font-size: 20px;
    font-weight: 600;
}


/* =========================================================
   TECHNOLOGY LIST
========================================================= */

.tech-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.tech-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

    .tech-item strong {
        color: #ffffff;
        font-size: 14px;
        font-weight: 600;
    }

    .tech-item span {
        color: rgba(255, 255, 255, 0.43);
        font-size: 12px;
        line-height: 1.5;
    }


/* =========================================================
   TECHNOLOGY GRID
========================================================= */

.tech-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

    .tech-grid .tech-item {
        padding: 20px;
        background: #1d1d22;
    }


/* =========================================================
   TECHNOLOGY TAGS
========================================================= */

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

    .tech-tags span {
        padding: 9px 12px;
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.08);
        color: rgba(255, 255, 255, 0.7);
        font-size: 11px;
    }


/* =========================================================
   PRINCIPLES
========================================================= */

.principles-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.principle-item {
    display: flex;
    gap: 15px;
    padding: 20px;
    background: #1d1d22;
}

    .principle-item span {
        color: rgba(255, 255, 255, 0.25);
        font-size: 10px;
    }

    .principle-item p {
        margin: 0;
        color: rgba(255, 255, 255, 0.58);
        font-size: 12px;
        line-height: 1.6;
    }


/* =========================================================
   PRICING
========================================================= */

.pricing-card {
    display: grid;
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 25px;
    padding: 30px;
    margin-bottom: 15px;
    background: #202026;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.pricing-card-accent {
    background: linear-gradient( 120deg, rgba(255, 255, 255, 0.05), transparent ), #202026;
}

.pricing-number {
    color: rgba(255, 255, 255, 0.25);
    font-size: 10px;
    font-weight: 600;
}

.pricing-label {
    display: block;
    margin-bottom: 10px;
    color: rgba(255, 255, 255, 0.32);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.14em;
}

.pricing-content h3 {
    margin: 0 0 15px;
    font-size: 22px;
}

.pricing-content p {
    max-width: 700px;
    margin: 0 0 14px;
    color: rgba(255, 255, 255, 0.55);
    font-size: 13px;
    line-height: 1.7;
}

.price-range {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    max-width: 500px;
    margin-top: 25px;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

    .price-range span {
        color: rgba(255, 255, 255, 0.4);
        font-size: 11px;
    }

    .price-range strong {
        color: #ffffff;
        font-size: 20px;
        font-weight: 600;
    }


/* =========================================================
   MOBILE
========================================================= */

@media (max-width: 900px) {

    .info-container {
        width: min(100%, 850px);
        margin: 0 auto;
    }


    .info-toc {
        position: static;
    }

    .info-toc-nav {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        border-left: none;
    }

        .info-toc-nav a {
            border-left: 1px solid rgba(255, 255, 255, 0.1);
        }

    .info-section {
        grid-template-columns: 1fr;
        gap: 15px;
        padding-bottom: 70px;
        margin-bottom: 70px;
    }

    .info-section-number {
        padding-top: 0;
    }
}


/* =========================================================
   SMALL MOBILE
========================================================= */

@media (max-width: 600px) {

    .info-page {
        padding: 70px 0 80px;
    }

    .info-container {
        width: calc(100% - 30px);
    }

    .info-toc-nav {
        grid-template-columns: 1fr;
    }

    .info-subsection,
    .tech-group,
    .pricing-card {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .tech-grid,
    .principles-grid {
        grid-template-columns: 1fr;
    }

    .info-card,
    .pricing-card {
        padding: 22px;
    }

    .info-card-header {
        align-items: flex-start;
        flex-direction: column;
        gap: 8px;
    }

    .price-range {
        align-items: flex-start;
        flex-direction: column;
    }
}

/* =========================================================
   GLOBAL
========================================================= */

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: #18181b;
    color: #f5f5f5;
    font-family: Arial, sans-serif;
}


/* =========================================================
   HEADER
========================================================= */

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
    background: rgba(28, 28, 32, 0.92);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}


    /* =========================================================
   CONTAINER
========================================================= */

    .site-header .container {
        width: min(1400px, calc(100% - 40px));
        margin: 0 auto;
    }


/* =========================================================
   NAVBAR
========================================================= */

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 76px;
    gap: 30px;
}


/* =========================================================
   BRAND
========================================================= */

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    color: #ffffff;
    text-decoration: none;
}


.brand-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    transition: border-color 0.2s ease, background 0.2s ease;
}


.brand:hover .brand-logo {
    border-color: rgba(255, 255, 255, 0.55);
    background: rgba(255, 255, 255, 0.05);
}


.brand-name {
    max-width: 180px;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 0.08em;
    line-height: 1.2;
    text-transform: uppercase;
}


/* =========================================================
   DESKTOP NAVIGATION
========================================================= */

.nav-links {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 24px;
    min-width: 0;
}


    .nav-links a {
        position: relative;
        white-space: nowrap;
        color: rgba(255, 255, 255, 0.62);
        font-size: 12px;
        font-weight: 500;
        text-decoration: none;
        transition: color 0.2s ease;
    }


        .nav-links a:hover {
            color: #ffffff;
        }


        /* underline */

        .nav-links a:not(.nav-contact)::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -8px;
            width: 0;
            height: 1px;
            background: #ffffff;
            transition: width 0.25s ease;
        }


        .nav-links a:not(.nav-contact):hover::after {
            width: 100%;
        }


    /* =========================================================
   CONTACT BUTTON
========================================================= */

    .nav-links .nav-contact {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 10px 17px;
        border: 1px solid rgba(255, 255, 255, 0.3);
        color: #ffffff;
        transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
    }


        .nav-links .nav-contact:hover {
            background: #ffffff;
            color: #0b0b0d;
            border-color: #ffffff;
        }


/* =========================================================
   MOBILE BUTTON
========================================================= */

.mobile-menu-button {
    display: none;
    width: 44px;
    height: 44px;
    padding: 0;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.18);
    cursor: pointer;
}


    .mobile-menu-button span {
        display: block;
        width: 19px;
        height: 1px;
        background: #ffffff;
    }


/* =========================================================
   TABLET
========================================================= */

@media (max-width: 1200px) {

    .nav-links {
        gap: 15px;
    }

        .nav-links a {
            font-size: 11px;
        }

    .brand-name {
        max-width: 140px;
    }
}


/* =========================================================
   MOBILE MENU
========================================================= */

@media (max-width: 950px) {

    .navbar {
        min-height: 70px;
    }


    .nav-links {
        display: none;
    }


    .mobile-menu-button {
        display: flex;
    }
}


/* =========================================================
   SMALL MOBILE
========================================================= */

@media (max-width: 500px) {

    .site-header .container {
        width: calc(100% - 30px);
    }


    .brand-logo {
        width: 38px;
        height: 38px;
    }


    .brand-name {
        max-width: 180px;
        font-size: 11px;
    }
}

/* =========================================================
   FOOTER
========================================================= */

.site-footer {
    position: relative;
    overflow: hidden;
    margin-top: 80px;
    padding: 7px 0 25px;
    background: #18181d;
    color: #ffffff;
}


/* =========================================================
   BACKGROUND
========================================================= */

.footer-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    background: radial-gradient( circle at 15% 20%, rgba(255, 255, 255, 0.06), transparent 35% ), radial-gradient( circle at 85% 80%, rgba(255, 255, 255, 0.04), transparent 35% );
    pointer-events: none;
}


/* дополнительное затемнение */

.site-footer::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    background: rgba(0, 0, 0, 0.25);
    pointer-events: none;
}


/* =========================================================
   CONTAINER
========================================================= */

.footer-container {
    position: relative;
    z-index: 1;
    width: min(1200px, calc(100% - 40px));
    margin: 0 auto;
}


/* =========================================================
   MAIN
========================================================= */

.footer-main {
    display: grid;
    /* ДВЕ КОЛОНКИ */
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    column-gap: 100px;
    align-items: start;
}


/* =========================================================
   LEFT
========================================================= */

.footer-left {
    min-width: 0;
    padding-top: 8px;
}

/* =========================================================
   BRAND
========================================================= */

.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 15px;
    color: inherit;
    text-decoration: none;
    margin-bottom: 20px;
}

.footer-logo {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

    .footer-logo img {
        display: block;
        width: 100%;
        height: 100%;
        object-fit: contain;
    }

.footer-brand-name {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.02em;
}


/* =========================================================
   DESCRIPTION
========================================================= */

.footer-description {
    max-width: 470px;
    margin: 0 0 38px;
    color: rgba(255, 255, 255, 0.58);
    font-size: 14px;
    line-height: 1.7;
}


/* =========================================================
   FOOTER BLOCK
========================================================= */

.footer-block {
    margin-top: 0px;
}

.footer-block-title {
    margin-bottom: 14px;
    color: rgba(255, 255, 255, 0.38);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}


/* =========================================================
   CONTACTS
========================================================= */

.footer-contact {
    display: block;
    width: fit-content;
    margin-bottom: 8px;
    color: #ffffff;
    font-size: 14px;
    text-decoration: none;
    transition: color 0.2s ease, opacity 0.2s ease;
}

    .footer-contact:hover {
        color: rgba(255, 255, 255, 0.65);
    }


/* =========================================================
   REQUISITES
========================================================= */

.footer-requisite {
    display: flex;
    width: 100%;
    max-width: 450px;
    justify-content: space-between;
    padding: 7px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    font-size: 13px;
}

    .footer-requisite span {
        color: rgba(255, 255, 255, 0.4);
    }

    .footer-requisite strong {
        font-weight: 500;
        color: rgba(255, 255, 255, 0.85);
    }


.footer-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 15px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
    text-decoration: none;
    transition: color 0.2s ease, gap 0.2s ease;
}

    .footer-more:hover {
        color: #ffffff;
        gap: 12px;
    }


/* =========================================================
   RIGHT
========================================================= */

.footer-right {
    min-width: 0;
    padding-top: 8px;
}


.footer-documents-title {
    margin-bottom: 22px;
    color: rgba(255, 255, 255, 0.38);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}


/* =========================================================
   DOCUMENTS
========================================================= */

.footer-documents {
    display: flex;
    flex-direction: column;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}


.footer-document {
    display: grid;
    grid-template-columns: 45px minmax(0, 1fr) 25px;
    align-items: center;
    gap: 20px;
    padding: 20px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    color: #ffffff;
    text-decoration: none;
    transition: padding-left 0.25s ease, background 0.25s ease;
}


    .footer-document:hover {
        padding-left: 10px;
    }


/* =========================================================
   DOCUMENT NUMBER
========================================================= */

.footer-document-number {
    color: rgba(255, 255, 255, 0.28);
    font-size: 12px;
    font-weight: 600;
}


/* =========================================================
   DOCUMENT TEXT
========================================================= */

.footer-document-text {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

    .footer-document-text strong {
        font-size: 14px;
        font-weight: 600;
        line-height: 1.4;
    }

    .footer-document-text span {
        color: rgba(255, 255, 255, 0.4);
        font-size: 12px;
        line-height: 1.5;
    }


/* =========================================================
   DOCUMENT ARROW
========================================================= */

.footer-document-arrow {
    color: rgba(255, 255, 255, 0.45);
    font-size: 18px;
    text-align: right;
    transition: color 0.2s ease, transform 0.2s ease;
}

.footer-document:hover .footer-document-arrow {
    color: #ffffff;
    transform: translate(3px, -3px);
}


/* =========================================================
   SEPARATOR
========================================================= */

.footer-separator {
    width: 100%;
    height: 1px;
    margin: 10px 0 10px;
    background: rgba(255, 255, 255, 0.1);
}


/* =========================================================
   BOTTOM
========================================================= */

.footer-bottom {
    display: grid;
    grid-template-columns: 1fr auto auto;
    align-items: center;
    gap: 30px;
    color: rgba(255, 255, 255, 0.35);
    font-size: 11px;
}


    .footer-bottom a {
        color: rgba(255, 255, 255, 0.5);
        text-decoration: none;
        transition: color 0.2s ease;
    }

        .footer-bottom a:hover {
            color: #ffffff;
        }


/* =========================================================
   TABLET
========================================================= */

@media (max-width: 900px) {

    .footer-main {
        grid-template-columns: 1fr 1fr;
        column-gap: 50px;
    }
}


/* =========================================================
   MOBILE
========================================================= */

@media (max-width: 700px) {

    .site-footer {
        margin-top: 50px;
        padding: 50px 0 25px;
    }

    .footer-container {
        width: min(100% - 30px, 1200px);
    }

    .footer-main {
        grid-template-columns: 1fr;
        row-gap: 50px;
    }

    .footer-right {
        padding-top: 0;
    }

    .footer-description {
        max-width: 100%;
    }

    .footer-bottom {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .footer-separator {
        margin: 45px 0 20px;
    }
}


/* =========================================================
   SMALL MOBILE
========================================================= */

@media (max-width: 450px) {

    .footer-document {
        grid-template-columns: 35px minmax(0, 1fr) 20px;
        gap: 12px;
        padding: 17px 0;
    }

    .footer-document-text strong {
        font-size: 13px;
    }

    .footer-document-text span {
        font-size: 11px;
    }
}