body {
    margin: 0;
    background: linear-gradient(135deg, #1e2746 0%, #232946 100%);
    font-family: 'Segoe UI', Arial, sans-serif;
    color: #e0e6f7;
    min-height: 100vh;
}

.city-tag {
    width: 100vw;
    text-align: center;
    font-size: 1.25rem;
    font-weight: 600;
    color: #00eaff;
    letter-spacing: 1px;
    background: rgba(30,39,70,0.35);
    box-shadow: 0 2px 14px 0 #00eaff33;
    padding: 14px 0 8px 0;
    margin: 0 0 6px 0;
    text-shadow: 0 2px 12px #00eaff33;
}

.main-nav {
    width: 100vw;
    background: rgba(30,39,70,0.55);
    padding: 25px 0 10px 0;
    box-shadow: 0 2px 20px 0 #151b2b55;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 10;
}

body {
    padding-top: 70px;
}

.main-nav ul {
    display: flex;
    justify-content: center;
    gap: 48px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-nav li {
    font-size: 1.1rem;
    letter-spacing: 1px;
    cursor: pointer;
    position: relative;
    transition: color 0.2s;
}

.main-nav .menu-link {
    color: #e0e6f7;
    text-decoration: none;
    font-weight: 500;
    padding: 0 3px;
    transition: color 0.2s;
    display: inline-block;
}

.main-nav .menu-link:hover {
    color: #00eaff;
}

.main-nav li.active .menu-link,
.main-nav li .menu-link.active {
    color: #00eaff;
    font-weight: 600;
}

.main-nav li.active .menu-link::after,
.main-nav li .menu-link.active::after {
    content: '';
    display: block;
    margin: 8px auto 0 auto;
    width: 100%;
    height: 3px;
    border-radius: 2px;
    background: #00eaff;
}

.main-nav li .menu-link::after {
    content: '';
    display: block;
    margin: 8px auto 0 auto;
    width: 0;
    height: 3px;
    border-radius: 2px;
    background: transparent;
    transition: width 0.2s, background 0.2s;
}

.main-nav li .menu-link:hover::after {
    width: 100%;
    background: #00eaff88;
}

.hero-section {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    min-height: 80vh;
    position: relative;
    background: url('https://images.unsplash.com/photo-1461749280684-dccba630e2f6?auto=format&fit=crop&w=1000&q=80') center/cover no-repeat;
    z-index: 1;
    padding-top: 30px;
}

.server-description, .wifi-description, .skud-description, .callcenter-description, .contacts-description {
    background: rgba(30, 39, 70, 0.75);
    border-radius: 22px;
    box-shadow: 0 6px 32px 0 #151b2b77;
    padding: 36px 34px 28px 34px;
    max-width: 540px;
    margin-bottom: 32px;
    z-index: 4;
    color: #e0e6f7;
    position: relative;
    text-align: left;
}

.contacts-description h1, .callcenter-description h1, .skud-description h1, .wifi-description h1 {
    font-size: 2.1rem;
    font-weight: 700;
    color: #00eaff;
    margin-top: 0;
    margin-bottom: 18px;
    letter-spacing: 1px;
    text-shadow: 0 2px 12px #00eaff33;
}
.contacts-description .desc-main, .callcenter-description .desc-main, .skud-description .desc-main, .wifi-description .desc-main {
    font-size: 1.13rem;
    margin-bottom: 22px;
    color: #cce9ff;
}
.contacts-description .desc-list, .callcenter-description .desc-list, .skud-description .desc-list, .wifi-description .desc-list {
    display: flex;
    flex-direction: column;
    gap: 18px;
}
.contacts-description .desc-item, .callcenter-description .desc-item, .skud-description .desc-item, .wifi-description .desc-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    font-size: 1.07rem;
    color: #e0e6f7;
    background: rgba(0,234,255,0.07);
    border-radius: 12px;
    padding: 10px 16px;
    box-shadow: 0 2px 12px 0 #00eaff22;
}
.contacts-description .desc-icon, .callcenter-description .desc-icon, .skud-description .desc-icon, .wifi-description .desc-icon {
    font-size: 1.45rem;
    margin-top: 1px;
    color: #00eaff;
    filter: drop-shadow(0 0 8px #00eaff88);
}
.server-description h1 {
    font-size: 2.1rem;
    font-weight: 700;
    color: #00eaff;
    margin-top: 0;
    margin-bottom: 18px;
    letter-spacing: 1px;
    text-shadow: 0 2px 12px #00eaff33;
}
.server-description .desc-main {
    font-size: 1.13rem;
    margin-bottom: 22px;
    color: #cce9ff;
}
.server-description .desc-list {
    display: flex;
    flex-direction: column;
    gap: 18px;
}
.server-description .desc-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    font-size: 1.07rem;
    color: #e0e6f7;
    background: rgba(0,234,255,0.07);
    border-radius: 12px;
    padding: 10px 16px;
    box-shadow: 0 2px 12px 0 #00eaff22;
}
.server-description .desc-icon {
    font-size: 1.45rem;
    margin-top: 1px;
    color: #00eaff;
    filter: drop-shadow(0 0 8px #00eaff88);
}

.hero-section::after {
    content: '';
    position: absolute;
    left: 0; right: 0; top: 0; bottom: 0;
    background: rgba(30, 39, 70, 0.65);
    z-index: 2;
}

.server-illustration {
    position: relative;
    width: 500px;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 3;
}

.server-illustration {
    position: relative;
    width: 500px;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}


.contact-link {
    color: #00eaff;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s;
}
.contact-link:hover {
    color: #cce9ff;
    text-decoration: underline;
}

@media (max-width: 600px) {
    body {
        font-size: 15px;
        padding-top: 48px;
    }
    .main-nav {
        padding: 7px 0 4px 0;
        background: rgba(30,39,70,0.98) !important;
        box-shadow: 0 2px 16px 0 #151b2b99;
    }
    .main-nav ul {
        flex-direction: column;
        gap: 7px;
        align-items: center;
        font-size: 1.05rem;
    }
    .main-nav li {
        font-size: 1.05rem;
    }
    .hero-section {
        padding: 8px 2vw 8px 2vw;
    }
    .server-description {
        padding: 13px 4px 11px 4px;
        max-width: 99vw;
        background: #fff !important;
        color: #232946 !important;
        box-shadow: 0 4px 24px 0 #23294633;
        border-radius: 18px;
    }
    .server-description h1 {
        color: #1e2746 !important;
        font-size: 1.12rem;
        margin-bottom: 8px;
    }
    .desc-main {
        font-size: 1.01rem;
        margin-bottom: 9px;
        color: #232946 !important;
    }
    .desc-list {
        flex-direction: column;
        gap: 6px;
    }
    .desc-item {
        font-size: 0.99rem;
        padding: 7px 3px;
        background: #f0f4fa !important;
        color: #232946 !important;
        border-radius: 10px;
    }
    .desc-icon {
        font-size: 1.18em;
        margin-right: 3px;
        color: #00bfff !important;
        filter: none;
    }
    .city-tag {
        font-size: 1.05rem;
        padding: 7px 0 4px 0;
    }
    section {
        margin-bottom: 14px;
    }
    h1, .contacts-description h1, .callcenter-description h1, .skud-description h1, .wifi-description h1, .server-description h1 {
        font-size: 1.12rem;
        margin-bottom: 8px;
    }
    .server-illustration {
        width: 99vw;
        height: 40vw;
    }
}