* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-red: #d32f2f;
    --dark-red: #b71c1c;
    --text-dark: #1e1e1e;
    --text-deep-blue: #163562;
    --text-gray: #5a5a5a;
    --light-bg: #f8f8f8;
    --border-color: #eaeaea;
    --white: #ffffff;
    --black: #1e1e1e;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--white);
    color: var(--text-dark);
    line-height: 1.5;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
}

.header {
    padding: 40px 0 30px 0;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    width: 150px;
}

.logo-area {
    display: flex;
    align-items: flex-end;
    gap: 30px;
    flex-wrap: wrap;
}

.logo-main {
    font-weight: 700;
    line-height: 1.1;
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

.logo-line1,
.logo-line2 {
    font-size: 2.5rem;
    color: var(--text-deep-blue);
}

.logo-line3 {
    font-size: 3.2rem;
    color: var(--primary-red);
}

.logo-line4 {
    font-size: 1.2rem;
    font-weight: 500;
    letter-spacing: 2px;
    color: var(--text-gray);
    margin-top: 10px;
    border-left: 3px solid var(--primary-red);
    padding-left: 12px;
}

.meta-info {
    margin-left: auto;
    text-align: right;
    font-weight: 500;
}

.meta-info .date {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-dark);
}

.meta-info .city {
    font-size: 1.4rem;
    color: var(--text-gray);
    margin-top: 4px;
}

.intro-block {
    padding: 50px 0 30px 0;
    max-width: 1000px;
}

.intro-title {
    font-size: 1.2rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--primary-red);
    margin-bottom: 16px;
}

.intro-text {
    font-size: 1.5rem;
    font-weight: 450;
    color: #2a2a2a;
    border-left: 4px solid var(--primary-red);
    padding-left: 30px;
    margin: 20px 0 20px 0;
}

.intro-text p {
    margin-bottom: 1.2rem;
}

.intro-text p:last-child {
    margin-bottom: 0;
}

.intro-highlight {
    background: var(--light-bg);
    padding: 25px 30px;
    border-radius: 20px;
    margin: 25px 0 15px 0;
    font-size: 1.2rem;
    border: 1px solid var(--border-color);
}

.intro-highlight ul {
    margin-left: 20px;
    color: #2d2d2d;
}

.intro-highlight li {
    margin-bottom: 5px;
}

.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin: 30px 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 40px;
    font-weight: 600;
    text-decoration: none;
    transition: 0.2s ease;
    border: 1.5px solid transparent;
    font-size: 1rem;
    cursor: pointer;
}

.btn-check:checked + .btn, .btn.active, .btn.show, .btn:first-child:active, :not(.btn-check) + .btn:active {
    background: var(--dark-red);
    border-color: var(--dark-red);
    color: var(--white);
}

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

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

.btn-outline {
    background: transparent;
    color: var(--text-dark);
    border-color: #c5c5c5;
}

.btn-outline:hover {
    border-color: var(--primary-red);
}

.btn-ountline.active {
    background: transparent;
    color: var(--text-dark);
    border-color: #c5c5c5;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin: 40px 0 60px;
}

.list-block {
    border-top: 3px solid var(--primary-red);
    padding-top: 20px;
}

.list-block h3 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.org-list {
    list-style: none;
}

.org-list li {
    margin-bottom: 12px;
    padding-left: 28px;
    position: relative;
    font-weight: 450;
    color: #2b2b2b;
}

.org-list li::before {
    content: "—";
    position: absolute;
    left: 4px;
    color: var(--primary-red);
    font-weight: 700;
}

.support-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 14px;
    margin-top: 15px;
}

.support-list span {
    background: #f6f6f6;
    padding: 6px 16px;
    border-radius: 30px;
    font-size: 0.95rem;
}

.material-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    background: var(--light-bg);
    border-radius: 24px;
    padding: 30px 40px;
    margin: 40px 0 20px;
    border: 1px solid var(--border-color);
}

.material-row h4 {
    font-size: 1.9rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.material-row p {
    color: #4a4a4a;
    margin: 0;
}

.download-link {
    background: var(--text-dark);
    color: var(--white);
    padding: 14px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: 0.2s;
    border: none;
    cursor: pointer;
}

.download-link:hover {
    background: var(--primary-red);
    color: var(--white);
}

.download-link i {
    font-size: 1.2rem;
}

.contacts {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 28px;
    padding: 40px;
    margin: 60px 0 40px;
}

.contacts h1 {
    margin-bottom: 20px;
    font-size: 2.5rem;
    font-weight: 700;
}

.contacts-row {
    display: flex;
    flex-wrap: wrap;
    gap: 30px 60px;
    align-items: center;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 1.2rem;
}

.contact-item i {
    color: var(--primary-red);
    font-size: 1.8rem;
    width: 32px;
}

.contact-item a {
    color: var(--text-dark);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease;
}

.contact-item a:hover {
    border-bottom-color: var(--primary-red);
}

hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 20px 0;
}

footer {
    border-top: 1px solid var(--border-color);
    padding: 30px 0;
    color: #5f5f5f;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: space-between;
    text-align: center;
}

@media (max-width: 1058px) {
    .logo-line1, .logo-line2 {
        font-size: 2.2rem;
    }

    .logo-line4 {
        font-size: 2.8rem;
    }

}

@media (max-width: 1024px) {
    .container {
        padding: 0 30px;
    }

    .logo-line1,
    .logo-line2 {
        font-size: 2.2rem;
    }

    .logo-line3 {
        font-size: 2.8rem;
    }
}

@media (max-width: 800px) {
    .grid-2 {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .meta-info {
        margin-left: 0;
        text-align: left;
        width: 100%;
    }

    .logo-area {
        flex-direction: column;
        align-items: flex-start;
    }

    .intro-text {
        font-size: 1.3rem;
        padding-left: 20px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }

    .header {
        padding: 30px 0 20px 0;
    }

    .logo {
        width: 100px;
    }

    .logo-line1,
    .logo-line2 {
        font-size: 1.8rem;
    }

    .logo-line3 {
        font-size: 2.2rem;
    }

    .logo-line4 {
        font-size: 1rem;
    }

    .meta-info .date {
        font-size: 1.5rem;
    }

    .meta-info .city {
        font-size: 1.2rem;
    }

    .intro-block {
        padding: 30px 0 20px 0;
    }

    .intro-title {
        font-size: 1rem;
    }

    .intro-text {
        font-size: 1.2rem;
    }

    .intro-highlight {
        padding: 20px;
        font-size: 1rem;
    }

    .material-row {
        padding: 25px;
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }

    .material-row h4 {
        font-size: 1.5rem;
    }

    .download-link {
        width: 100%;
        justify-content: center;
    }

    .contacts {
        padding: 25px;
        margin: 40px 0 30px;
    }

    .contacts h1 {
        font-size: 2rem;
    }

    .contacts-row {
        gap: 20px;
    }

    .contact-item {
        font-size: 1rem;
        width: 100%;
    }

    .contact-item i {
        font-size: 1.5rem;
        width: 28px;
    }

    .btn-group {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .logo-line1,
    .logo-line2 {
        font-size: 1.5rem;
    }

    .logo-line3 {
        font-size: 1.8rem;
    }

    .logo-line4 {
        font-size: 0.9rem;
    }

    .meta-info .date {
        font-size: 1.3rem;
    }

    .meta-info .city {
        font-size: 1rem;
    }

    .intro-text {
        font-size: 1.1rem;
    }

    .contacts h1 {
        font-size: 1.8rem;
    }

    .list-block h3 {
        font-size: 1.5rem;
    }

    .support-list span {
        font-size: 0.85rem;
        padding: 4px 12px;
    }
}

@media (max-width: 360px) {
    .logo-line1,
    .logo-line2 {
        font-size: 1.3rem;
    }

    .logo-line3 {
        font-size: 1.5rem;
    }

    .btn {
        padding: 12px 20px;
        font-size: 0.9rem;
    }
}

.text-red {
    color: var(--primary-red);
}

.bg-light {
    background: var(--light-bg);
}

.border-red {
    border-color: var(--primary-red) !important;
}

.fa,
.fas,
.far,
.fab {
    line-height: 1;
}

.contact-item a[href^="tel:"] {
    color: var(--text-dark);
    text-decoration: none;
}

/* Дополнительные стили для сетки партнеров */
.partners-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.partner-item {
    flex: 1 1 calc(50% - 20px);
    min-width: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 20px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    box-sizing: border-box;
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
    color: black;
    font-size: 14px;
}

.partner-item:hover {
    transform: translateY(-5px);
}

.partner-item img {
    max-width: 300px;
    max-height: 120px;
    width: auto;
    height: auto;
    margin-bottom: 15px;
    object-fit: contain;
}

.support-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    padding: 0;
    margin: 0;
}

.support-item {
    flex: 1 1 calc(50% - 20px);
    min-width: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 20px;
    border-radius: 20px;
    box-sizing: border-box;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid var(--border-color);
    text-decoration: none;
    color: black;
    font-size: 14px;
}

.support-item:hover {
    transform: translateY(-5px);
}

.support-item img {
    max-width: 300px;
    max-height: 120px;
    width: auto;
    height: auto;
    margin-bottom: 15px;
    object-fit: contain;
}

@media (max-width: 768px) {
    .partner-item, .support-item {
        flex: 1 1 100%;
    }
}

.korneev-dev {
    color: #808080;
    font-weight: 1000;
    transition: all 0.3s ease;
}

.korneev-dev:hover {
    color: black;
}